1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
73 /* Temp hacks for tracepoint encoding migration. */
74 static char *target_buf
;
75 static long target_buf_size
;
77 /* The size to align memory write packets, when practical. The protocol
78 does not guarantee any alignment, and gdb will generate short
79 writes and unaligned writes, but even as a best-effort attempt this
80 can improve bulk transfers. For instance, if a write is misaligned
81 relative to the target's data bus, the stub may need to make an extra
82 round trip fetching data from the target. This doesn't make a
83 huge difference, but it's easy to do, so we try to be helpful.
85 The alignment chosen is arbitrary; usually data bus width is
86 important here, not the possibly larger cache line size. */
87 enum { REMOTE_ALIGN_WRITES
= 16 };
89 /* Prototypes for local functions. */
90 static void cleanup_sigint_signal_handler (void *dummy
);
91 static void initialize_sigint_signal_handler (void);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void handle_remote_sigint (int);
97 static void handle_remote_sigint_twice (int);
98 static void async_remote_interrupt (gdb_client_data
);
99 void async_remote_interrupt_twice (gdb_client_data
);
101 static void remote_files_info (struct target_ops
*ignore
);
103 static void remote_prepare_to_store (struct regcache
*regcache
);
105 static void remote_open (char *name
, int from_tty
);
107 static void extended_remote_open (char *name
, int from_tty
);
109 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
111 static void remote_close (int quitting
);
113 static void remote_mourn (struct target_ops
*ops
);
115 static void extended_remote_restart (void);
117 static void extended_remote_mourn (struct target_ops
*);
119 static void remote_mourn_1 (struct target_ops
*);
121 static void remote_send (char **buf
, long *sizeof_buf_p
);
123 static int readchar (int timeout
);
125 static void remote_serial_write (const char *str
, int len
);
127 static void remote_kill (struct target_ops
*ops
);
129 static int tohex (int nib
);
131 static int remote_can_async_p (void);
133 static int remote_is_async_p (void);
135 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
136 void *context
), void *context
);
138 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
140 static void remote_interrupt (int signo
);
142 static void remote_interrupt_twice (int signo
);
144 static void interrupt_query (void);
146 static void set_general_thread (struct ptid ptid
);
147 static void set_continue_thread (struct ptid ptid
);
149 static void get_offsets (void);
151 static void skip_frame (void);
153 static long read_frame (char **buf_p
, long *sizeof_buf
);
155 static int hexnumlen (ULONGEST num
);
157 static void init_remote_ops (void);
159 static void init_extended_remote_ops (void);
161 static void remote_stop (ptid_t
);
163 static int ishex (int ch
, int *val
);
165 static int stubhex (int ch
);
167 static int hexnumstr (char *, ULONGEST
);
169 static int hexnumnstr (char *, ULONGEST
, int);
171 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
173 static void print_packet (char *);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static void remote_find_new_threads (void);
185 static void record_currthread (ptid_t currthread
);
187 static int fromhex (int a
);
189 static int putpkt_binary (char *buf
, int cnt
);
191 static void check_binary_download (CORE_ADDR addr
);
193 struct packet_config
;
195 static void show_packet_config_cmd (struct packet_config
*config
);
197 static void update_packet_config (struct packet_config
*config
);
199 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
200 struct cmd_list_element
*c
);
202 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
204 struct cmd_list_element
*c
,
207 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
208 static ptid_t
read_ptid (char *buf
, char **obuf
);
210 static void remote_set_permissions (void);
213 static int remote_get_trace_status (struct trace_status
*ts
);
215 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
217 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
219 static void remote_query_supported (void);
221 static void remote_check_symbols (struct objfile
*objfile
);
223 void _initialize_remote (void);
226 static void stop_reply_xfree (struct stop_reply
*);
227 static void remote_parse_stop_reply (char *, struct stop_reply
*);
228 static void push_stop_reply (struct stop_reply
*);
229 static void discard_pending_stop_replies (struct inferior
*);
230 static int peek_stop_reply (ptid_t ptid
);
232 static void remote_async_inferior_event_handler (gdb_client_data
);
234 static void remote_terminal_ours (void);
236 static int remote_read_description_p (struct target_ops
*target
);
238 static void remote_console_output (char *msg
);
240 static int remote_supports_cond_breakpoints (void);
242 static int remote_can_run_breakpoint_commands (void);
246 static struct cmd_list_element
*remote_cmdlist
;
248 /* For "set remote" and "show remote". */
250 static struct cmd_list_element
*remote_set_cmdlist
;
251 static struct cmd_list_element
*remote_show_cmdlist
;
253 /* Description of the remote protocol state for the currently
254 connected target. This is per-target state, and independent of the
255 selected architecture. */
259 /* A buffer to use for incoming packets, and its current size. The
260 buffer is grown dynamically for larger incoming packets.
261 Outgoing packets may also be constructed in this buffer.
262 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
263 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
268 /* True if we're going through initial connection setup (finding out
269 about the remote side's threads, relocating symbols, etc.). */
272 /* If we negotiated packet size explicitly (and thus can bypass
273 heuristics for the largest packet size that will not overflow
274 a buffer in the stub), this will be set to that packet size.
275 Otherwise zero, meaning to use the guessed size. */
276 long explicit_packet_size
;
278 /* remote_wait is normally called when the target is running and
279 waits for a stop reply packet. But sometimes we need to call it
280 when the target is already stopped. We can send a "?" packet
281 and have remote_wait read the response. Or, if we already have
282 the response, we can stash it in BUF and tell remote_wait to
283 skip calling getpkt. This flag is set when BUF contains a
284 stop reply packet and the target is not waiting. */
285 int cached_wait_status
;
287 /* True, if in no ack mode. That is, neither GDB nor the stub will
288 expect acks from each other. The connection is assumed to be
292 /* True if we're connected in extended remote mode. */
295 /* True if the stub reported support for multi-process
297 int multi_process_aware
;
299 /* True if we resumed the target and we're waiting for the target to
300 stop. In the mean time, we can't start another command/query.
301 The remote server wouldn't be ready to process it, so we'd
302 timeout waiting for a reply that would never come and eventually
303 we'd close the connection. This can happen in asynchronous mode
304 because we allow GDB commands while the target is running. */
305 int waiting_for_stop_reply
;
307 /* True if the stub reports support for non-stop mode. */
310 /* True if the stub reports support for vCont;t. */
313 /* True if the stub reports support for conditional tracepoints. */
314 int cond_tracepoints
;
316 /* True if the stub reports support for target-side breakpoint
318 int cond_breakpoints
;
320 /* True if the stub reports support for target-side breakpoint
322 int breakpoint_commands
;
324 /* True if the stub reports support for fast tracepoints. */
325 int fast_tracepoints
;
327 /* True if the stub reports support for static tracepoints. */
328 int static_tracepoints
;
330 /* True if the stub reports support for installing tracepoint while
332 int install_in_trace
;
334 /* True if the stub can continue running a trace while GDB is
336 int disconnected_tracing
;
338 /* True if the stub reports support for enabling and disabling
339 tracepoints while a trace experiment is running. */
340 int enable_disable_tracepoints
;
342 /* True if the stub can collect strings using tracenz bytecode. */
345 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
346 responded to that. */
350 /* Private data that we'll store in (struct thread_info)->private. */
351 struct private_thread_info
358 free_private_thread_info (struct private_thread_info
*info
)
364 /* Returns true if the multi-process extensions are in effect. */
366 remote_multi_process_p (struct remote_state
*rs
)
368 return rs
->multi_process_aware
;
371 /* This data could be associated with a target, but we do not always
372 have access to the current target when we need it, so for now it is
373 static. This will be fine for as long as only one target is in use
375 static struct remote_state remote_state
;
377 static struct remote_state
*
378 get_remote_state_raw (void)
380 return &remote_state
;
383 /* Description of the remote protocol for a given architecture. */
387 long offset
; /* Offset into G packet. */
388 long regnum
; /* GDB's internal register number. */
389 LONGEST pnum
; /* Remote protocol register number. */
390 int in_g_packet
; /* Always part of G packet. */
391 /* long size in bytes; == register_size (target_gdbarch (), regnum);
393 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
397 struct remote_arch_state
399 /* Description of the remote protocol registers. */
400 long sizeof_g_packet
;
402 /* Description of the remote protocol registers indexed by REGNUM
403 (making an array gdbarch_num_regs in size). */
404 struct packet_reg
*regs
;
406 /* This is the size (in chars) of the first response to the ``g''
407 packet. It is used as a heuristic when determining the maximum
408 size of memory-read and memory-write packets. A target will
409 typically only reserve a buffer large enough to hold the ``g''
410 packet. The size does not include packet overhead (headers and
412 long actual_register_packet_size
;
414 /* This is the maximum size (in chars) of a non read/write packet.
415 It is also used as a cap on the size of read/write packets. */
416 long remote_packet_size
;
419 long sizeof_pkt
= 2000;
421 /* Utility: generate error from an incoming stub packet. */
423 trace_error (char *buf
)
426 return; /* not an error msg */
429 case '1': /* malformed packet error */
430 if (*++buf
== '0') /* general case: */
431 error (_("remote.c: error in outgoing packet."));
433 error (_("remote.c: error in outgoing packet at field #%ld."),
434 strtol (buf
, NULL
, 16));
436 error (_("Target returns error code '%s'."), buf
);
440 /* Utility: wait for reply from stub, while accepting "O" packets. */
442 remote_get_noisy_reply (char **buf_p
,
445 do /* Loop on reply from remote stub. */
449 QUIT
; /* Allow user to bail out with ^C. */
450 getpkt (buf_p
, sizeof_buf
, 0);
454 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
457 CORE_ADDR from
, to
, org_to
;
459 int adjusted_size
= 0;
460 volatile struct gdb_exception ex
;
462 p
= buf
+ strlen ("qRelocInsn:");
463 pp
= unpack_varlen_hex (p
, &ul
);
465 error (_("invalid qRelocInsn packet: %s"), buf
);
469 unpack_varlen_hex (p
, &ul
);
474 TRY_CATCH (ex
, RETURN_MASK_ALL
)
476 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
480 adjusted_size
= to
- org_to
;
482 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
485 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
487 /* Propagate memory errors silently back to the target.
488 The stub may have limited the range of addresses we
489 can write to, for example. */
494 /* Something unexpectedly bad happened. Be verbose so
495 we can tell what, and propagate the error back to the
496 stub, so it doesn't get stuck waiting for a
498 exception_fprintf (gdb_stderr
, ex
,
499 _("warning: relocating instruction: "));
503 else if (buf
[0] == 'O' && buf
[1] != 'K')
504 remote_console_output (buf
+ 1); /* 'O' message from stub */
506 return buf
; /* Here's the actual reply. */
511 /* Handle for retreving the remote protocol data from gdbarch. */
512 static struct gdbarch_data
*remote_gdbarch_data_handle
;
514 static struct remote_arch_state
*
515 get_remote_arch_state (void)
517 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
520 /* Fetch the global remote target state. */
522 static struct remote_state
*
523 get_remote_state (void)
525 /* Make sure that the remote architecture state has been
526 initialized, because doing so might reallocate rs->buf. Any
527 function which calls getpkt also needs to be mindful of changes
528 to rs->buf, but this call limits the number of places which run
530 get_remote_arch_state ();
532 return get_remote_state_raw ();
536 compare_pnums (const void *lhs_
, const void *rhs_
)
538 const struct packet_reg
* const *lhs
= lhs_
;
539 const struct packet_reg
* const *rhs
= rhs_
;
541 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
543 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
550 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
552 int regnum
, num_remote_regs
, offset
;
553 struct packet_reg
**remote_regs
;
555 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
557 struct packet_reg
*r
= ®s
[regnum
];
559 if (register_size (gdbarch
, regnum
) == 0)
560 /* Do not try to fetch zero-sized (placeholder) registers. */
563 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
568 /* Define the g/G packet format as the contents of each register
569 with a remote protocol number, in order of ascending protocol
572 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
573 * sizeof (struct packet_reg
*));
574 for (num_remote_regs
= 0, regnum
= 0;
575 regnum
< gdbarch_num_regs (gdbarch
);
577 if (regs
[regnum
].pnum
!= -1)
578 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
580 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
583 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
585 remote_regs
[regnum
]->in_g_packet
= 1;
586 remote_regs
[regnum
]->offset
= offset
;
587 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
593 /* Given the architecture described by GDBARCH, return the remote
594 protocol register's number and the register's offset in the g/G
595 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
596 If the target does not have a mapping for REGNUM, return false,
597 otherwise, return true. */
600 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
601 int *pnum
, int *poffset
)
604 struct packet_reg
*regs
;
605 struct cleanup
*old_chain
;
607 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
609 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
610 old_chain
= make_cleanup (xfree
, regs
);
612 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
614 *pnum
= regs
[regnum
].pnum
;
615 *poffset
= regs
[regnum
].offset
;
617 do_cleanups (old_chain
);
623 init_remote_state (struct gdbarch
*gdbarch
)
625 struct remote_state
*rs
= get_remote_state_raw ();
626 struct remote_arch_state
*rsa
;
628 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
630 /* Use the architecture to build a regnum<->pnum table, which will be
631 1:1 unless a feature set specifies otherwise. */
632 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
633 gdbarch_num_regs (gdbarch
),
636 /* Record the maximum possible size of the g packet - it may turn out
638 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
640 /* Default maximum number of characters in a packet body. Many
641 remote stubs have a hardwired buffer size of 400 bytes
642 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
643 as the maximum packet-size to ensure that the packet and an extra
644 NUL character can always fit in the buffer. This stops GDB
645 trashing stubs that try to squeeze an extra NUL into what is
646 already a full buffer (As of 1999-12-04 that was most stubs). */
647 rsa
->remote_packet_size
= 400 - 1;
649 /* This one is filled in when a ``g'' packet is received. */
650 rsa
->actual_register_packet_size
= 0;
652 /* Should rsa->sizeof_g_packet needs more space than the
653 default, adjust the size accordingly. Remember that each byte is
654 encoded as two characters. 32 is the overhead for the packet
655 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
656 (``$NN:G...#NN'') is a better guess, the below has been padded a
658 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
659 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
661 /* Make sure that the packet buffer is plenty big enough for
662 this architecture. */
663 if (rs
->buf_size
< rsa
->remote_packet_size
)
665 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
666 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
672 /* Return the current allowed size of a remote packet. This is
673 inferred from the current architecture, and should be used to
674 limit the length of outgoing packets. */
676 get_remote_packet_size (void)
678 struct remote_state
*rs
= get_remote_state ();
679 struct remote_arch_state
*rsa
= get_remote_arch_state ();
681 if (rs
->explicit_packet_size
)
682 return rs
->explicit_packet_size
;
684 return rsa
->remote_packet_size
;
687 static struct packet_reg
*
688 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
690 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
694 struct packet_reg
*r
= &rsa
->regs
[regnum
];
696 gdb_assert (r
->regnum
== regnum
);
701 static struct packet_reg
*
702 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
706 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
708 struct packet_reg
*r
= &rsa
->regs
[i
];
716 /* FIXME: graces/2002-08-08: These variables should eventually be
717 bound to an instance of the target object (as in gdbarch-tdep()),
718 when such a thing exists. */
720 /* This is set to the data address of the access causing the target
721 to stop for a watchpoint. */
722 static CORE_ADDR remote_watch_data_address
;
724 /* This is non-zero if target stopped for a watchpoint. */
725 static int remote_stopped_by_watchpoint_p
;
727 static struct target_ops remote_ops
;
729 static struct target_ops extended_remote_ops
;
731 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
732 ``forever'' still use the normal timeout mechanism. This is
733 currently used by the ASYNC code to guarentee that target reads
734 during the initial connect always time-out. Once getpkt has been
735 modified to return a timeout indication and, in turn
736 remote_wait()/wait_for_inferior() have gained a timeout parameter
738 static int wait_forever_enabled_p
= 1;
740 /* Allow the user to specify what sequence to send to the remote
741 when he requests a program interruption: Although ^C is usually
742 what remote systems expect (this is the default, here), it is
743 sometimes preferable to send a break. On other systems such
744 as the Linux kernel, a break followed by g, which is Magic SysRq g
745 is required in order to interrupt the execution. */
746 const char interrupt_sequence_control_c
[] = "Ctrl-C";
747 const char interrupt_sequence_break
[] = "BREAK";
748 const char interrupt_sequence_break_g
[] = "BREAK-g";
749 static const char *const interrupt_sequence_modes
[] =
751 interrupt_sequence_control_c
,
752 interrupt_sequence_break
,
753 interrupt_sequence_break_g
,
756 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
759 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
760 struct cmd_list_element
*c
,
763 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
764 fprintf_filtered (file
,
765 _("Send the ASCII ETX character (Ctrl-c) "
766 "to the remote target to interrupt the "
767 "execution of the program.\n"));
768 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
769 fprintf_filtered (file
,
770 _("send a break signal to the remote target "
771 "to interrupt the execution of the program.\n"));
772 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
773 fprintf_filtered (file
,
774 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
775 "the remote target to interrupt the execution "
776 "of Linux kernel.\n"));
778 internal_error (__FILE__
, __LINE__
,
779 _("Invalid value for interrupt_sequence_mode: %s."),
780 interrupt_sequence_mode
);
783 /* This boolean variable specifies whether interrupt_sequence is sent
784 to the remote target when gdb connects to it.
785 This is mostly needed when you debug the Linux kernel: The Linux kernel
786 expects BREAK g which is Magic SysRq g for connecting gdb. */
787 static int interrupt_on_connect
= 0;
789 /* This variable is used to implement the "set/show remotebreak" commands.
790 Since these commands are now deprecated in favor of "set/show remote
791 interrupt-sequence", it no longer has any effect on the code. */
792 static int remote_break
;
795 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
798 interrupt_sequence_mode
= interrupt_sequence_break
;
800 interrupt_sequence_mode
= interrupt_sequence_control_c
;
804 show_remotebreak (struct ui_file
*file
, int from_tty
,
805 struct cmd_list_element
*c
,
810 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
811 remote_open knows that we don't have a file open when the program
813 static struct serial
*remote_desc
= NULL
;
815 /* This variable sets the number of bits in an address that are to be
816 sent in a memory ("M" or "m") packet. Normally, after stripping
817 leading zeros, the entire address would be sent. This variable
818 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
819 initial implementation of remote.c restricted the address sent in
820 memory packets to ``host::sizeof long'' bytes - (typically 32
821 bits). Consequently, for 64 bit targets, the upper 32 bits of an
822 address was never sent. Since fixing this bug may cause a break in
823 some remote targets this variable is principly provided to
824 facilitate backward compatibility. */
826 static unsigned int remote_address_size
;
828 /* Temporary to track who currently owns the terminal. See
829 remote_terminal_* for more details. */
831 static int remote_async_terminal_ours_p
;
833 /* The executable file to use for "run" on the remote side. */
835 static char *remote_exec_file
= "";
838 /* User configurable variables for the number of characters in a
839 memory read/write packet. MIN (rsa->remote_packet_size,
840 rsa->sizeof_g_packet) is the default. Some targets need smaller
841 values (fifo overruns, et.al.) and some users need larger values
842 (speed up transfers). The variables ``preferred_*'' (the user
843 request), ``current_*'' (what was actually set) and ``forced_*''
844 (Positive - a soft limit, negative - a hard limit). */
846 struct memory_packet_config
853 /* Compute the current size of a read/write packet. Since this makes
854 use of ``actual_register_packet_size'' the computation is dynamic. */
857 get_memory_packet_size (struct memory_packet_config
*config
)
859 struct remote_state
*rs
= get_remote_state ();
860 struct remote_arch_state
*rsa
= get_remote_arch_state ();
862 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
863 law?) that some hosts don't cope very well with large alloca()
864 calls. Eventually the alloca() code will be replaced by calls to
865 xmalloc() and make_cleanups() allowing this restriction to either
866 be lifted or removed. */
867 #ifndef MAX_REMOTE_PACKET_SIZE
868 #define MAX_REMOTE_PACKET_SIZE 16384
870 /* NOTE: 20 ensures we can write at least one byte. */
871 #ifndef MIN_REMOTE_PACKET_SIZE
872 #define MIN_REMOTE_PACKET_SIZE 20
877 if (config
->size
<= 0)
878 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
880 what_they_get
= config
->size
;
884 what_they_get
= get_remote_packet_size ();
885 /* Limit the packet to the size specified by the user. */
887 && what_they_get
> config
->size
)
888 what_they_get
= config
->size
;
890 /* Limit it to the size of the targets ``g'' response unless we have
891 permission from the stub to use a larger packet size. */
892 if (rs
->explicit_packet_size
== 0
893 && rsa
->actual_register_packet_size
> 0
894 && what_they_get
> rsa
->actual_register_packet_size
)
895 what_they_get
= rsa
->actual_register_packet_size
;
897 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
898 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
899 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
900 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
902 /* Make sure there is room in the global buffer for this packet
903 (including its trailing NUL byte). */
904 if (rs
->buf_size
< what_they_get
+ 1)
906 rs
->buf_size
= 2 * what_they_get
;
907 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
910 return what_they_get
;
913 /* Update the size of a read/write packet. If they user wants
914 something really big then do a sanity check. */
917 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
919 int fixed_p
= config
->fixed_p
;
920 long size
= config
->size
;
923 error (_("Argument required (integer, `fixed' or `limited')."));
924 else if (strcmp (args
, "hard") == 0
925 || strcmp (args
, "fixed") == 0)
927 else if (strcmp (args
, "soft") == 0
928 || strcmp (args
, "limit") == 0)
934 size
= strtoul (args
, &end
, 0);
936 error (_("Invalid %s (bad syntax)."), config
->name
);
938 /* Instead of explicitly capping the size of a packet to
939 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
940 instead allowed to set the size to something arbitrarily
942 if (size
> MAX_REMOTE_PACKET_SIZE
)
943 error (_("Invalid %s (too large)."), config
->name
);
947 if (fixed_p
&& !config
->fixed_p
)
949 if (! query (_("The target may not be able to correctly handle a %s\n"
950 "of %ld bytes. Change the packet size? "),
952 error (_("Packet size not changed."));
954 /* Update the config. */
955 config
->fixed_p
= fixed_p
;
960 show_memory_packet_size (struct memory_packet_config
*config
)
962 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
964 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
965 get_memory_packet_size (config
));
967 printf_filtered (_("Packets are limited to %ld bytes.\n"),
968 get_memory_packet_size (config
));
971 static struct memory_packet_config memory_write_packet_config
=
973 "memory-write-packet-size",
977 set_memory_write_packet_size (char *args
, int from_tty
)
979 set_memory_packet_size (args
, &memory_write_packet_config
);
983 show_memory_write_packet_size (char *args
, int from_tty
)
985 show_memory_packet_size (&memory_write_packet_config
);
989 get_memory_write_packet_size (void)
991 return get_memory_packet_size (&memory_write_packet_config
);
994 static struct memory_packet_config memory_read_packet_config
=
996 "memory-read-packet-size",
1000 set_memory_read_packet_size (char *args
, int from_tty
)
1002 set_memory_packet_size (args
, &memory_read_packet_config
);
1006 show_memory_read_packet_size (char *args
, int from_tty
)
1008 show_memory_packet_size (&memory_read_packet_config
);
1012 get_memory_read_packet_size (void)
1014 long size
= get_memory_packet_size (&memory_read_packet_config
);
1016 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1017 extra buffer size argument before the memory read size can be
1018 increased beyond this. */
1019 if (size
> get_remote_packet_size ())
1020 size
= get_remote_packet_size ();
1025 /* Generic configuration support for packets the stub optionally
1026 supports. Allows the user to specify the use of the packet as well
1027 as allowing GDB to auto-detect support in the remote stub. */
1031 PACKET_SUPPORT_UNKNOWN
= 0,
1036 struct packet_config
1040 enum auto_boolean detect
;
1041 enum packet_support support
;
1044 /* Analyze a packet's return value and update the packet config
1055 update_packet_config (struct packet_config
*config
)
1057 switch (config
->detect
)
1059 case AUTO_BOOLEAN_TRUE
:
1060 config
->support
= PACKET_ENABLE
;
1062 case AUTO_BOOLEAN_FALSE
:
1063 config
->support
= PACKET_DISABLE
;
1065 case AUTO_BOOLEAN_AUTO
:
1066 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1072 show_packet_config_cmd (struct packet_config
*config
)
1074 char *support
= "internal-error";
1076 switch (config
->support
)
1079 support
= "enabled";
1081 case PACKET_DISABLE
:
1082 support
= "disabled";
1084 case PACKET_SUPPORT_UNKNOWN
:
1085 support
= "unknown";
1088 switch (config
->detect
)
1090 case AUTO_BOOLEAN_AUTO
:
1091 printf_filtered (_("Support for the `%s' packet "
1092 "is auto-detected, currently %s.\n"),
1093 config
->name
, support
);
1095 case AUTO_BOOLEAN_TRUE
:
1096 case AUTO_BOOLEAN_FALSE
:
1097 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1098 config
->name
, support
);
1104 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1105 const char *title
, int legacy
)
1111 config
->name
= name
;
1112 config
->title
= title
;
1113 config
->detect
= AUTO_BOOLEAN_AUTO
;
1114 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1115 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1117 show_doc
= xstrprintf ("Show current use of remote "
1118 "protocol `%s' (%s) packet",
1120 /* set/show TITLE-packet {auto,on,off} */
1121 cmd_name
= xstrprintf ("%s-packet", title
);
1122 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1123 &config
->detect
, set_doc
,
1124 show_doc
, NULL
, /* help_doc */
1125 set_remote_protocol_packet_cmd
,
1126 show_remote_protocol_packet_cmd
,
1127 &remote_set_cmdlist
, &remote_show_cmdlist
);
1128 /* The command code copies the documentation strings. */
1131 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1136 legacy_name
= xstrprintf ("%s-packet", name
);
1137 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1138 &remote_set_cmdlist
);
1139 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1140 &remote_show_cmdlist
);
1144 static enum packet_result
1145 packet_check_result (const char *buf
)
1149 /* The stub recognized the packet request. Check that the
1150 operation succeeded. */
1152 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1154 /* "Enn" - definitly an error. */
1155 return PACKET_ERROR
;
1157 /* Always treat "E." as an error. This will be used for
1158 more verbose error messages, such as E.memtypes. */
1159 if (buf
[0] == 'E' && buf
[1] == '.')
1160 return PACKET_ERROR
;
1162 /* The packet may or may not be OK. Just assume it is. */
1166 /* The stub does not support the packet. */
1167 return PACKET_UNKNOWN
;
1170 static enum packet_result
1171 packet_ok (const char *buf
, struct packet_config
*config
)
1173 enum packet_result result
;
1175 result
= packet_check_result (buf
);
1180 /* The stub recognized the packet request. */
1181 switch (config
->support
)
1183 case PACKET_SUPPORT_UNKNOWN
:
1185 fprintf_unfiltered (gdb_stdlog
,
1186 "Packet %s (%s) is supported\n",
1187 config
->name
, config
->title
);
1188 config
->support
= PACKET_ENABLE
;
1190 case PACKET_DISABLE
:
1191 internal_error (__FILE__
, __LINE__
,
1192 _("packet_ok: attempt to use a disabled packet"));
1198 case PACKET_UNKNOWN
:
1199 /* The stub does not support the packet. */
1200 switch (config
->support
)
1203 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1204 /* If the stub previously indicated that the packet was
1205 supported then there is a protocol error.. */
1206 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1207 config
->name
, config
->title
);
1209 /* The user set it wrong. */
1210 error (_("Enabled packet %s (%s) not recognized by stub"),
1211 config
->name
, config
->title
);
1213 case PACKET_SUPPORT_UNKNOWN
:
1215 fprintf_unfiltered (gdb_stdlog
,
1216 "Packet %s (%s) is NOT supported\n",
1217 config
->name
, config
->title
);
1218 config
->support
= PACKET_DISABLE
;
1220 case PACKET_DISABLE
:
1242 PACKET_vFile_pwrite
,
1244 PACKET_vFile_unlink
,
1245 PACKET_vFile_readlink
,
1247 PACKET_qXfer_features
,
1248 PACKET_qXfer_libraries
,
1249 PACKET_qXfer_libraries_svr4
,
1250 PACKET_qXfer_memory_map
,
1251 PACKET_qXfer_spu_read
,
1252 PACKET_qXfer_spu_write
,
1253 PACKET_qXfer_osdata
,
1254 PACKET_qXfer_threads
,
1255 PACKET_qXfer_statictrace_read
,
1256 PACKET_qXfer_traceframe_info
,
1261 PACKET_QPassSignals
,
1262 PACKET_QProgramSignals
,
1263 PACKET_qSearch_memory
,
1266 PACKET_QStartNoAckMode
,
1268 PACKET_qXfer_siginfo_read
,
1269 PACKET_qXfer_siginfo_write
,
1271 PACKET_ConditionalTracepoints
,
1272 PACKET_ConditionalBreakpoints
,
1273 PACKET_BreakpointCommands
,
1274 PACKET_FastTracepoints
,
1275 PACKET_StaticTracepoints
,
1276 PACKET_InstallInTrace
,
1279 PACKET_TracepointSource
,
1282 PACKET_QDisableRandomization
,
1284 PACKET_QTBuffer_size
,
1287 PACKET_qXfer_btrace
,
1291 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1294 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1295 struct cmd_list_element
*c
)
1297 struct packet_config
*packet
;
1299 for (packet
= remote_protocol_packets
;
1300 packet
< &remote_protocol_packets
[PACKET_MAX
];
1303 if (&packet
->detect
== c
->var
)
1305 update_packet_config (packet
);
1309 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1314 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1315 struct cmd_list_element
*c
,
1318 struct packet_config
*packet
;
1320 for (packet
= remote_protocol_packets
;
1321 packet
< &remote_protocol_packets
[PACKET_MAX
];
1324 if (&packet
->detect
== c
->var
)
1326 show_packet_config_cmd (packet
);
1330 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1334 /* Should we try one of the 'Z' requests? */
1338 Z_PACKET_SOFTWARE_BP
,
1339 Z_PACKET_HARDWARE_BP
,
1346 /* For compatibility with older distributions. Provide a ``set remote
1347 Z-packet ...'' command that updates all the Z packet types. */
1349 static enum auto_boolean remote_Z_packet_detect
;
1352 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1353 struct cmd_list_element
*c
)
1357 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1359 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1360 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1365 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1366 struct cmd_list_element
*c
,
1371 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1373 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1377 /* Should we try the 'ThreadInfo' query packet?
1379 This variable (NOT available to the user: auto-detect only!)
1380 determines whether GDB will use the new, simpler "ThreadInfo"
1381 query or the older, more complex syntax for thread queries.
1382 This is an auto-detect variable (set to true at each connect,
1383 and set to false when the target fails to recognize it). */
1385 static int use_threadinfo_query
;
1386 static int use_threadextra_query
;
1388 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1389 static struct async_signal_handler
*sigint_remote_twice_token
;
1390 static struct async_signal_handler
*sigint_remote_token
;
1393 /* Asynchronous signal handle registered as event loop source for
1394 when we have pending events ready to be passed to the core. */
1396 static struct async_event_handler
*remote_async_inferior_event_token
;
1400 static ptid_t magic_null_ptid
;
1401 static ptid_t not_sent_ptid
;
1402 static ptid_t any_thread_ptid
;
1404 /* These are the threads which we last sent to the remote system. The
1405 TID member will be -1 for all or -2 for not sent yet. */
1407 static ptid_t general_thread
;
1408 static ptid_t continue_thread
;
1410 /* This is the traceframe which we last selected on the remote system.
1411 It will be -1 if no traceframe is selected. */
1412 static int remote_traceframe_number
= -1;
1414 /* Find out if the stub attached to PID (and hence GDB should offer to
1415 detach instead of killing it when bailing out). */
1418 remote_query_attached (int pid
)
1420 struct remote_state
*rs
= get_remote_state ();
1421 size_t size
= get_remote_packet_size ();
1423 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1426 if (remote_multi_process_p (rs
))
1427 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1429 xsnprintf (rs
->buf
, size
, "qAttached");
1432 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1434 switch (packet_ok (rs
->buf
,
1435 &remote_protocol_packets
[PACKET_qAttached
]))
1438 if (strcmp (rs
->buf
, "1") == 0)
1442 warning (_("Remote failure reply: %s"), rs
->buf
);
1444 case PACKET_UNKNOWN
:
1451 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1452 has been invented by GDB, instead of reported by the target. Since
1453 we can be connected to a remote system before before knowing about
1454 any inferior, mark the target with execution when we find the first
1455 inferior. If ATTACHED is 1, then we had just attached to this
1456 inferior. If it is 0, then we just created this inferior. If it
1457 is -1, then try querying the remote stub to find out if it had
1458 attached to the inferior or not. */
1460 static struct inferior
*
1461 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1463 struct inferior
*inf
;
1465 /* Check whether this process we're learning about is to be
1466 considered attached, or if is to be considered to have been
1467 spawned by the stub. */
1469 attached
= remote_query_attached (pid
);
1471 if (gdbarch_has_global_solist (target_gdbarch ()))
1473 /* If the target shares code across all inferiors, then every
1474 attach adds a new inferior. */
1475 inf
= add_inferior (pid
);
1477 /* ... and every inferior is bound to the same program space.
1478 However, each inferior may still have its own address
1480 inf
->aspace
= maybe_new_address_space ();
1481 inf
->pspace
= current_program_space
;
1485 /* In the traditional debugging scenario, there's a 1-1 match
1486 between program/address spaces. We simply bind the inferior
1487 to the program space's address space. */
1488 inf
= current_inferior ();
1489 inferior_appeared (inf
, pid
);
1492 inf
->attach_flag
= attached
;
1493 inf
->fake_pid_p
= fake_pid_p
;
1498 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1499 according to RUNNING. */
1502 remote_add_thread (ptid_t ptid
, int running
)
1506 set_executing (ptid
, running
);
1507 set_running (ptid
, running
);
1510 /* Come here when we learn about a thread id from the remote target.
1511 It may be the first time we hear about such thread, so take the
1512 opportunity to add it to GDB's thread list. In case this is the
1513 first time we're noticing its corresponding inferior, add it to
1514 GDB's inferior list as well. */
1517 remote_notice_new_inferior (ptid_t currthread
, int running
)
1519 /* If this is a new thread, add it to GDB's thread list.
1520 If we leave it up to WFI to do this, bad things will happen. */
1522 if (in_thread_list (currthread
) && is_exited (currthread
))
1524 /* We're seeing an event on a thread id we knew had exited.
1525 This has to be a new thread reusing the old id. Add it. */
1526 remote_add_thread (currthread
, running
);
1530 if (!in_thread_list (currthread
))
1532 struct inferior
*inf
= NULL
;
1533 int pid
= ptid_get_pid (currthread
);
1535 if (ptid_is_pid (inferior_ptid
)
1536 && pid
== ptid_get_pid (inferior_ptid
))
1538 /* inferior_ptid has no thread member yet. This can happen
1539 with the vAttach -> remote_wait,"TAAthread:" path if the
1540 stub doesn't support qC. This is the first stop reported
1541 after an attach, so this is the main thread. Update the
1542 ptid in the thread list. */
1543 if (in_thread_list (pid_to_ptid (pid
)))
1544 thread_change_ptid (inferior_ptid
, currthread
);
1547 remote_add_thread (currthread
, running
);
1548 inferior_ptid
= currthread
;
1553 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1555 /* inferior_ptid is not set yet. This can happen with the
1556 vRun -> remote_wait,"TAAthread:" path if the stub
1557 doesn't support qC. This is the first stop reported
1558 after an attach, so this is the main thread. Update the
1559 ptid in the thread list. */
1560 thread_change_ptid (inferior_ptid
, currthread
);
1564 /* When connecting to a target remote, or to a target
1565 extended-remote which already was debugging an inferior, we
1566 may not know about it yet. Add it before adding its child
1567 thread, so notifications are emitted in a sensible order. */
1568 if (!in_inferior_list (ptid_get_pid (currthread
)))
1570 struct remote_state
*rs
= get_remote_state ();
1571 int fake_pid_p
= !remote_multi_process_p (rs
);
1573 inf
= remote_add_inferior (fake_pid_p
,
1574 ptid_get_pid (currthread
), -1);
1577 /* This is really a new thread. Add it. */
1578 remote_add_thread (currthread
, running
);
1580 /* If we found a new inferior, let the common code do whatever
1581 it needs to with it (e.g., read shared libraries, insert
1584 notice_new_inferior (currthread
, running
, 0);
1588 /* Return the private thread data, creating it if necessary. */
1590 static struct private_thread_info
*
1591 demand_private_info (ptid_t ptid
)
1593 struct thread_info
*info
= find_thread_ptid (ptid
);
1599 info
->private = xmalloc (sizeof (*(info
->private)));
1600 info
->private_dtor
= free_private_thread_info
;
1601 info
->private->core
= -1;
1602 info
->private->extra
= 0;
1605 return info
->private;
1608 /* Call this function as a result of
1609 1) A halt indication (T packet) containing a thread id
1610 2) A direct query of currthread
1611 3) Successful execution of set thread */
1614 record_currthread (ptid_t currthread
)
1616 general_thread
= currthread
;
1619 static char *last_pass_packet
;
1621 /* If 'QPassSignals' is supported, tell the remote stub what signals
1622 it can simply pass through to the inferior without reporting. */
1625 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1627 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1629 char *pass_packet
, *p
;
1632 gdb_assert (numsigs
< 256);
1633 for (i
= 0; i
< numsigs
; i
++)
1635 if (pass_signals
[i
])
1638 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1639 strcpy (pass_packet
, "QPassSignals:");
1640 p
= pass_packet
+ strlen (pass_packet
);
1641 for (i
= 0; i
< numsigs
; i
++)
1643 if (pass_signals
[i
])
1646 *p
++ = tohex (i
>> 4);
1647 *p
++ = tohex (i
& 15);
1656 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1658 struct remote_state
*rs
= get_remote_state ();
1659 char *buf
= rs
->buf
;
1661 putpkt (pass_packet
);
1662 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1663 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1664 if (last_pass_packet
)
1665 xfree (last_pass_packet
);
1666 last_pass_packet
= pass_packet
;
1669 xfree (pass_packet
);
1673 /* The last QProgramSignals packet sent to the target. We bypass
1674 sending a new program signals list down to the target if the new
1675 packet is exactly the same as the last we sent. IOW, we only let
1676 the target know about program signals list changes. */
1678 static char *last_program_signals_packet
;
1680 /* If 'QProgramSignals' is supported, tell the remote stub what
1681 signals it should pass through to the inferior when detaching. */
1684 remote_program_signals (int numsigs
, unsigned char *signals
)
1686 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1691 gdb_assert (numsigs
< 256);
1692 for (i
= 0; i
< numsigs
; i
++)
1697 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1698 strcpy (packet
, "QProgramSignals:");
1699 p
= packet
+ strlen (packet
);
1700 for (i
= 0; i
< numsigs
; i
++)
1702 if (signal_pass_state (i
))
1705 *p
++ = tohex (i
>> 4);
1706 *p
++ = tohex (i
& 15);
1715 if (!last_program_signals_packet
1716 || strcmp (last_program_signals_packet
, packet
) != 0)
1718 struct remote_state
*rs
= get_remote_state ();
1719 char *buf
= rs
->buf
;
1722 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1723 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1724 xfree (last_program_signals_packet
);
1725 last_program_signals_packet
= packet
;
1732 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1733 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1734 thread. If GEN is set, set the general thread, if not, then set
1735 the step/continue thread. */
1737 set_thread (struct ptid ptid
, int gen
)
1739 struct remote_state
*rs
= get_remote_state ();
1740 ptid_t state
= gen
? general_thread
: continue_thread
;
1741 char *buf
= rs
->buf
;
1742 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1744 if (ptid_equal (state
, ptid
))
1748 *buf
++ = gen
? 'g' : 'c';
1749 if (ptid_equal (ptid
, magic_null_ptid
))
1750 xsnprintf (buf
, endbuf
- buf
, "0");
1751 else if (ptid_equal (ptid
, any_thread_ptid
))
1752 xsnprintf (buf
, endbuf
- buf
, "0");
1753 else if (ptid_equal (ptid
, minus_one_ptid
))
1754 xsnprintf (buf
, endbuf
- buf
, "-1");
1756 write_ptid (buf
, endbuf
, ptid
);
1758 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1760 general_thread
= ptid
;
1762 continue_thread
= ptid
;
1766 set_general_thread (struct ptid ptid
)
1768 set_thread (ptid
, 1);
1772 set_continue_thread (struct ptid ptid
)
1774 set_thread (ptid
, 0);
1777 /* Change the remote current process. Which thread within the process
1778 ends up selected isn't important, as long as it is the same process
1779 as what INFERIOR_PTID points to.
1781 This comes from that fact that there is no explicit notion of
1782 "selected process" in the protocol. The selected process for
1783 general operations is the process the selected general thread
1787 set_general_process (void)
1789 struct remote_state
*rs
= get_remote_state ();
1791 /* If the remote can't handle multiple processes, don't bother. */
1792 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1795 /* We only need to change the remote current thread if it's pointing
1796 at some other process. */
1797 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1798 set_general_thread (inferior_ptid
);
1802 /* Return nonzero if the thread PTID is still alive on the remote
1806 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1808 struct remote_state
*rs
= get_remote_state ();
1811 if (ptid_equal (ptid
, magic_null_ptid
))
1812 /* The main thread is always alive. */
1815 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1816 /* The main thread is always alive. This can happen after a
1817 vAttach, if the remote side doesn't support
1822 endp
= rs
->buf
+ get_remote_packet_size ();
1825 write_ptid (p
, endp
, ptid
);
1828 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1829 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1832 /* About these extended threadlist and threadinfo packets. They are
1833 variable length packets but, the fields within them are often fixed
1834 length. They are redundent enough to send over UDP as is the
1835 remote protocol in general. There is a matching unit test module
1838 #define OPAQUETHREADBYTES 8
1840 /* a 64 bit opaque identifier */
1841 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1843 /* WARNING: This threadref data structure comes from the remote O.S.,
1844 libstub protocol encoding, and remote.c. It is not particularly
1847 /* Right now, the internal structure is int. We want it to be bigger.
1848 Plan to fix this. */
1850 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1852 /* gdb_ext_thread_info is an internal GDB data structure which is
1853 equivalent to the reply of the remote threadinfo packet. */
1855 struct gdb_ext_thread_info
1857 threadref threadid
; /* External form of thread reference. */
1858 int active
; /* Has state interesting to GDB?
1860 char display
[256]; /* Brief state display, name,
1861 blocked/suspended. */
1862 char shortname
[32]; /* To be used to name threads. */
1863 char more_display
[256]; /* Long info, statistics, queue depth,
1867 /* The volume of remote transfers can be limited by submitting
1868 a mask containing bits specifying the desired information.
1869 Use a union of these values as the 'selection' parameter to
1870 get_thread_info. FIXME: Make these TAG names more thread specific. */
1872 #define TAG_THREADID 1
1873 #define TAG_EXISTS 2
1874 #define TAG_DISPLAY 4
1875 #define TAG_THREADNAME 8
1876 #define TAG_MOREDISPLAY 16
1878 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1880 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1882 static char *unpack_nibble (char *buf
, int *val
);
1884 static char *pack_nibble (char *buf
, int nibble
);
1886 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1888 static char *unpack_byte (char *buf
, int *value
);
1890 static char *pack_int (char *buf
, int value
);
1892 static char *unpack_int (char *buf
, int *value
);
1894 static char *unpack_string (char *src
, char *dest
, int length
);
1896 static char *pack_threadid (char *pkt
, threadref
*id
);
1898 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1900 void int_to_threadref (threadref
*id
, int value
);
1902 static int threadref_to_int (threadref
*ref
);
1904 static void copy_threadref (threadref
*dest
, threadref
*src
);
1906 static int threadmatch (threadref
*dest
, threadref
*src
);
1908 static char *pack_threadinfo_request (char *pkt
, int mode
,
1911 static int remote_unpack_thread_info_response (char *pkt
,
1912 threadref
*expectedref
,
1913 struct gdb_ext_thread_info
1917 static int remote_get_threadinfo (threadref
*threadid
,
1918 int fieldset
, /*TAG mask */
1919 struct gdb_ext_thread_info
*info
);
1921 static char *pack_threadlist_request (char *pkt
, int startflag
,
1923 threadref
*nextthread
);
1925 static int parse_threadlist_response (char *pkt
,
1927 threadref
*original_echo
,
1928 threadref
*resultlist
,
1931 static int remote_get_threadlist (int startflag
,
1932 threadref
*nextthread
,
1936 threadref
*threadlist
);
1938 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1940 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1941 void *context
, int looplimit
);
1943 static int remote_newthread_step (threadref
*ref
, void *context
);
1946 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1947 buffer we're allowed to write to. Returns
1948 BUF+CHARACTERS_WRITTEN. */
1951 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1954 struct remote_state
*rs
= get_remote_state ();
1956 if (remote_multi_process_p (rs
))
1958 pid
= ptid_get_pid (ptid
);
1960 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1962 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1964 tid
= ptid_get_tid (ptid
);
1966 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1968 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1973 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1974 passed the last parsed char. Returns null_ptid on error. */
1977 read_ptid (char *buf
, char **obuf
)
1981 ULONGEST pid
= 0, tid
= 0;
1985 /* Multi-process ptid. */
1986 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1988 error (_("invalid remote ptid: %s"), p
);
1991 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1994 return ptid_build (pid
, 0, tid
);
1997 /* No multi-process. Just a tid. */
1998 pp
= unpack_varlen_hex (p
, &tid
);
2000 /* Since the stub is not sending a process id, then default to
2001 what's in inferior_ptid, unless it's null at this point. If so,
2002 then since there's no way to know the pid of the reported
2003 threads, use the magic number. */
2004 if (ptid_equal (inferior_ptid
, null_ptid
))
2005 pid
= ptid_get_pid (magic_null_ptid
);
2007 pid
= ptid_get_pid (inferior_ptid
);
2011 return ptid_build (pid
, 0, tid
);
2014 /* Encode 64 bits in 16 chars of hex. */
2016 static const char hexchars
[] = "0123456789abcdef";
2019 ishex (int ch
, int *val
)
2021 if ((ch
>= 'a') && (ch
<= 'f'))
2023 *val
= ch
- 'a' + 10;
2026 if ((ch
>= 'A') && (ch
<= 'F'))
2028 *val
= ch
- 'A' + 10;
2031 if ((ch
>= '0') && (ch
<= '9'))
2042 if (ch
>= 'a' && ch
<= 'f')
2043 return ch
- 'a' + 10;
2044 if (ch
>= '0' && ch
<= '9')
2046 if (ch
>= 'A' && ch
<= 'F')
2047 return ch
- 'A' + 10;
2052 stub_unpack_int (char *buff
, int fieldlength
)
2059 nibble
= stubhex (*buff
++);
2063 retval
= retval
<< 4;
2069 unpack_varlen_hex (char *buff
, /* packet to parse */
2073 ULONGEST retval
= 0;
2075 while (ishex (*buff
, &nibble
))
2078 retval
= retval
<< 4;
2079 retval
|= nibble
& 0x0f;
2086 unpack_nibble (char *buf
, int *val
)
2088 *val
= fromhex (*buf
++);
2093 pack_nibble (char *buf
, int nibble
)
2095 *buf
++ = hexchars
[(nibble
& 0x0f)];
2100 pack_hex_byte (char *pkt
, int byte
)
2102 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2103 *pkt
++ = hexchars
[(byte
& 0xf)];
2108 unpack_byte (char *buf
, int *value
)
2110 *value
= stub_unpack_int (buf
, 2);
2115 pack_int (char *buf
, int value
)
2117 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2118 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2119 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2120 buf
= pack_hex_byte (buf
, (value
& 0xff));
2125 unpack_int (char *buf
, int *value
)
2127 *value
= stub_unpack_int (buf
, 8);
2131 #if 0 /* Currently unused, uncomment when needed. */
2132 static char *pack_string (char *pkt
, char *string
);
2135 pack_string (char *pkt
, char *string
)
2140 len
= strlen (string
);
2142 len
= 200; /* Bigger than most GDB packets, junk??? */
2143 pkt
= pack_hex_byte (pkt
, len
);
2147 if ((ch
== '\0') || (ch
== '#'))
2148 ch
= '*'; /* Protect encapsulation. */
2153 #endif /* 0 (unused) */
2156 unpack_string (char *src
, char *dest
, int length
)
2165 pack_threadid (char *pkt
, threadref
*id
)
2168 unsigned char *altid
;
2170 altid
= (unsigned char *) id
;
2171 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2173 pkt
= pack_hex_byte (pkt
, *altid
++);
2179 unpack_threadid (char *inbuf
, threadref
*id
)
2182 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2185 altref
= (char *) id
;
2187 while (inbuf
< limit
)
2189 x
= stubhex (*inbuf
++);
2190 y
= stubhex (*inbuf
++);
2191 *altref
++ = (x
<< 4) | y
;
2196 /* Externally, threadrefs are 64 bits but internally, they are still
2197 ints. This is due to a mismatch of specifications. We would like
2198 to use 64bit thread references internally. This is an adapter
2202 int_to_threadref (threadref
*id
, int value
)
2204 unsigned char *scan
;
2206 scan
= (unsigned char *) id
;
2212 *scan
++ = (value
>> 24) & 0xff;
2213 *scan
++ = (value
>> 16) & 0xff;
2214 *scan
++ = (value
>> 8) & 0xff;
2215 *scan
++ = (value
& 0xff);
2219 threadref_to_int (threadref
*ref
)
2222 unsigned char *scan
;
2228 value
= (value
<< 8) | ((*scan
++) & 0xff);
2233 copy_threadref (threadref
*dest
, threadref
*src
)
2236 unsigned char *csrc
, *cdest
;
2238 csrc
= (unsigned char *) src
;
2239 cdest
= (unsigned char *) dest
;
2246 threadmatch (threadref
*dest
, threadref
*src
)
2248 /* Things are broken right now, so just assume we got a match. */
2250 unsigned char *srcp
, *destp
;
2252 srcp
= (char *) src
;
2253 destp
= (char *) dest
;
2257 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2264 threadid:1, # always request threadid
2271 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2274 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2276 *pkt
++ = 'q'; /* Info Query */
2277 *pkt
++ = 'P'; /* process or thread info */
2278 pkt
= pack_int (pkt
, mode
); /* mode */
2279 pkt
= pack_threadid (pkt
, id
); /* threadid */
2280 *pkt
= '\0'; /* terminate */
2284 /* These values tag the fields in a thread info response packet. */
2285 /* Tagging the fields allows us to request specific fields and to
2286 add more fields as time goes by. */
2288 #define TAG_THREADID 1 /* Echo the thread identifier. */
2289 #define TAG_EXISTS 2 /* Is this process defined enough to
2290 fetch registers and its stack? */
2291 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2292 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2293 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2297 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2298 struct gdb_ext_thread_info
*info
)
2300 struct remote_state
*rs
= get_remote_state ();
2304 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2307 /* info->threadid = 0; FIXME: implement zero_threadref. */
2309 info
->display
[0] = '\0';
2310 info
->shortname
[0] = '\0';
2311 info
->more_display
[0] = '\0';
2313 /* Assume the characters indicating the packet type have been
2315 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2316 pkt
= unpack_threadid (pkt
, &ref
);
2319 warning (_("Incomplete response to threadinfo request."));
2320 if (!threadmatch (&ref
, expectedref
))
2321 { /* This is an answer to a different request. */
2322 warning (_("ERROR RMT Thread info mismatch."));
2325 copy_threadref (&info
->threadid
, &ref
);
2327 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2329 /* Packets are terminated with nulls. */
2330 while ((pkt
< limit
) && mask
&& *pkt
)
2332 pkt
= unpack_int (pkt
, &tag
); /* tag */
2333 pkt
= unpack_byte (pkt
, &length
); /* length */
2334 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2336 warning (_("ERROR RMT: threadinfo tag mismatch."));
2340 if (tag
== TAG_THREADID
)
2344 warning (_("ERROR RMT: length of threadid is not 16."));
2348 pkt
= unpack_threadid (pkt
, &ref
);
2349 mask
= mask
& ~TAG_THREADID
;
2352 if (tag
== TAG_EXISTS
)
2354 info
->active
= stub_unpack_int (pkt
, length
);
2356 mask
= mask
& ~(TAG_EXISTS
);
2359 warning (_("ERROR RMT: 'exists' length too long."));
2365 if (tag
== TAG_THREADNAME
)
2367 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2368 mask
= mask
& ~TAG_THREADNAME
;
2371 if (tag
== TAG_DISPLAY
)
2373 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2374 mask
= mask
& ~TAG_DISPLAY
;
2377 if (tag
== TAG_MOREDISPLAY
)
2379 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2380 mask
= mask
& ~TAG_MOREDISPLAY
;
2383 warning (_("ERROR RMT: unknown thread info tag."));
2384 break; /* Not a tag we know about. */
2390 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2391 struct gdb_ext_thread_info
*info
)
2393 struct remote_state
*rs
= get_remote_state ();
2396 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2398 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2400 if (rs
->buf
[0] == '\0')
2403 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2408 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2411 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2412 threadref
*nextthread
)
2414 *pkt
++ = 'q'; /* info query packet */
2415 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2416 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2417 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2418 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2423 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2426 parse_threadlist_response (char *pkt
, int result_limit
,
2427 threadref
*original_echo
, threadref
*resultlist
,
2430 struct remote_state
*rs
= get_remote_state ();
2432 int count
, resultcount
, done
;
2435 /* Assume the 'q' and 'M chars have been stripped. */
2436 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2437 /* done parse past here */
2438 pkt
= unpack_byte (pkt
, &count
); /* count field */
2439 pkt
= unpack_nibble (pkt
, &done
);
2440 /* The first threadid is the argument threadid. */
2441 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2442 while ((count
-- > 0) && (pkt
< limit
))
2444 pkt
= unpack_threadid (pkt
, resultlist
++);
2445 if (resultcount
++ >= result_limit
)
2454 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2455 int *done
, int *result_count
, threadref
*threadlist
)
2457 struct remote_state
*rs
= get_remote_state ();
2458 static threadref echo_nextthread
;
2461 /* Trancate result limit to be smaller than the packet size. */
2462 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2463 >= get_remote_packet_size ())
2464 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2466 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2468 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2470 if (*rs
->buf
== '\0')
2474 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2477 if (!threadmatch (&echo_nextthread
, nextthread
))
2479 /* FIXME: This is a good reason to drop the packet. */
2480 /* Possably, there is a duplicate response. */
2482 retransmit immediatly - race conditions
2483 retransmit after timeout - yes
2485 wait for packet, then exit
2487 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2488 return 0; /* I choose simply exiting. */
2490 if (*result_count
<= 0)
2494 warning (_("RMT ERROR : failed to get remote thread list."));
2497 return result
; /* break; */
2499 if (*result_count
> result_limit
)
2502 warning (_("RMT ERROR: threadlist response longer than requested."));
2508 /* This is the interface between remote and threads, remotes upper
2511 /* remote_find_new_threads retrieves the thread list and for each
2512 thread in the list, looks up the thread in GDB's internal list,
2513 adding the thread if it does not already exist. This involves
2514 getting partial thread lists from the remote target so, polling the
2515 quit_flag is required. */
2518 /* About this many threadisds fit in a packet. */
2520 #define MAXTHREADLISTRESULTS 32
2523 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2526 int done
, i
, result_count
;
2530 static threadref nextthread
;
2531 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2536 if (loopcount
++ > looplimit
)
2539 warning (_("Remote fetch threadlist -infinite loop-."));
2542 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2543 &done
, &result_count
, resultthreadlist
))
2548 /* Clear for later iterations. */
2550 /* Setup to resume next batch of thread references, set nextthread. */
2551 if (result_count
>= 1)
2552 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2554 while (result_count
--)
2555 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2562 remote_newthread_step (threadref
*ref
, void *context
)
2564 int pid
= ptid_get_pid (inferior_ptid
);
2565 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2567 if (!in_thread_list (ptid
))
2569 return 1; /* continue iterator */
2572 #define CRAZY_MAX_THREADS 1000
2575 remote_current_thread (ptid_t oldpid
)
2577 struct remote_state
*rs
= get_remote_state ();
2580 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2581 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2582 return read_ptid (&rs
->buf
[2], NULL
);
2587 /* Find new threads for info threads command.
2588 * Original version, using John Metzler's thread protocol.
2592 remote_find_new_threads (void)
2594 remote_threadlist_iterator (remote_newthread_step
, 0,
2598 #if defined(HAVE_LIBEXPAT)
2600 typedef struct thread_item
2606 DEF_VEC_O(thread_item_t
);
2608 struct threads_parsing_context
2610 VEC (thread_item_t
) *items
;
2614 start_thread (struct gdb_xml_parser
*parser
,
2615 const struct gdb_xml_element
*element
,
2616 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2618 struct threads_parsing_context
*data
= user_data
;
2620 struct thread_item item
;
2622 struct gdb_xml_value
*attr
;
2624 id
= xml_find_attribute (attributes
, "id")->value
;
2625 item
.ptid
= read_ptid (id
, NULL
);
2627 attr
= xml_find_attribute (attributes
, "core");
2629 item
.core
= *(ULONGEST
*) attr
->value
;
2635 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2639 end_thread (struct gdb_xml_parser
*parser
,
2640 const struct gdb_xml_element
*element
,
2641 void *user_data
, const char *body_text
)
2643 struct threads_parsing_context
*data
= user_data
;
2645 if (body_text
&& *body_text
)
2646 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2649 const struct gdb_xml_attribute thread_attributes
[] = {
2650 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2651 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2652 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2655 const struct gdb_xml_element thread_children
[] = {
2656 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2659 const struct gdb_xml_element threads_children
[] = {
2660 { "thread", thread_attributes
, thread_children
,
2661 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2662 start_thread
, end_thread
},
2663 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2666 const struct gdb_xml_element threads_elements
[] = {
2667 { "threads", NULL
, threads_children
,
2668 GDB_XML_EF_NONE
, NULL
, NULL
},
2669 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2672 /* Discard the contents of the constructed thread info context. */
2675 clear_threads_parsing_context (void *p
)
2677 struct threads_parsing_context
*context
= p
;
2679 struct thread_item
*item
;
2681 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2682 xfree (item
->extra
);
2684 VEC_free (thread_item_t
, context
->items
);
2690 * Find all threads for info threads command.
2691 * Uses new thread protocol contributed by Cisco.
2692 * Falls back and attempts to use the older method (above)
2693 * if the target doesn't respond to the new method.
2697 remote_threads_info (struct target_ops
*ops
)
2699 struct remote_state
*rs
= get_remote_state ();
2703 if (remote_desc
== 0) /* paranoia */
2704 error (_("Command can only be used when connected to the remote target."));
2706 #if defined(HAVE_LIBEXPAT)
2707 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2709 char *xml
= target_read_stralloc (¤t_target
,
2710 TARGET_OBJECT_THREADS
, NULL
);
2712 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2716 struct threads_parsing_context context
;
2718 context
.items
= NULL
;
2719 make_cleanup (clear_threads_parsing_context
, &context
);
2721 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2722 threads_elements
, xml
, &context
) == 0)
2725 struct thread_item
*item
;
2728 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2731 if (!ptid_equal (item
->ptid
, null_ptid
))
2733 struct private_thread_info
*info
;
2734 /* In non-stop mode, we assume new found threads
2735 are running until proven otherwise with a
2736 stop reply. In all-stop, we can only get
2737 here if all threads are stopped. */
2738 int running
= non_stop
? 1 : 0;
2740 remote_notice_new_inferior (item
->ptid
, running
);
2742 info
= demand_private_info (item
->ptid
);
2743 info
->core
= item
->core
;
2744 info
->extra
= item
->extra
;
2751 do_cleanups (back_to
);
2756 if (use_threadinfo_query
)
2758 putpkt ("qfThreadInfo");
2759 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2761 if (bufp
[0] != '\0') /* q packet recognized */
2763 struct cleanup
*old_chain
;
2766 /* remote_notice_new_inferior (in the loop below) may make
2767 new RSP calls, which clobber rs->buf. Work with a
2769 bufp
= saved_reply
= xstrdup (rs
->buf
);
2770 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2772 while (*bufp
++ == 'm') /* reply contains one or more TID */
2776 new_thread
= read_ptid (bufp
, &bufp
);
2777 if (!ptid_equal (new_thread
, null_ptid
))
2779 /* In non-stop mode, we assume new found threads
2780 are running until proven otherwise with a
2781 stop reply. In all-stop, we can only get
2782 here if all threads are stopped. */
2783 int running
= non_stop
? 1 : 0;
2785 remote_notice_new_inferior (new_thread
, running
);
2788 while (*bufp
++ == ','); /* comma-separated list */
2789 free_current_contents (&saved_reply
);
2790 putpkt ("qsThreadInfo");
2791 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2792 bufp
= saved_reply
= xstrdup (rs
->buf
);
2794 do_cleanups (old_chain
);
2799 /* Only qfThreadInfo is supported in non-stop mode. */
2803 /* Else fall back to old method based on jmetzler protocol. */
2804 use_threadinfo_query
= 0;
2805 remote_find_new_threads ();
2810 * Collect a descriptive string about the given thread.
2811 * The target may say anything it wants to about the thread
2812 * (typically info about its blocked / runnable state, name, etc.).
2813 * This string will appear in the info threads display.
2815 * Optional: targets are not required to implement this function.
2819 remote_threads_extra_info (struct thread_info
*tp
)
2821 struct remote_state
*rs
= get_remote_state ();
2825 struct gdb_ext_thread_info threadinfo
;
2826 static char display_buf
[100]; /* arbitrary... */
2827 int n
= 0; /* position in display_buf */
2829 if (remote_desc
== 0) /* paranoia */
2830 internal_error (__FILE__
, __LINE__
,
2831 _("remote_threads_extra_info"));
2833 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2834 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2835 /* This is the main thread which was added by GDB. The remote
2836 server doesn't know about it. */
2839 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2841 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2843 if (info
&& info
->private)
2844 return info
->private->extra
;
2849 if (use_threadextra_query
)
2852 char *endb
= rs
->buf
+ get_remote_packet_size ();
2854 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2856 write_ptid (b
, endb
, tp
->ptid
);
2859 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2860 if (rs
->buf
[0] != 0)
2862 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2863 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2864 display_buf
[result
] = '\0';
2869 /* If the above query fails, fall back to the old method. */
2870 use_threadextra_query
= 0;
2871 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2872 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2873 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2874 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2875 if (threadinfo
.active
)
2877 if (*threadinfo
.shortname
)
2878 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2879 " Name: %s,", threadinfo
.shortname
);
2880 if (*threadinfo
.display
)
2881 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2882 " State: %s,", threadinfo
.display
);
2883 if (*threadinfo
.more_display
)
2884 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2885 " Priority: %s", threadinfo
.more_display
);
2889 /* For purely cosmetic reasons, clear up trailing commas. */
2890 if (',' == display_buf
[n
-1])
2891 display_buf
[n
-1] = ' ';
2900 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2901 struct static_tracepoint_marker
*marker
)
2903 struct remote_state
*rs
= get_remote_state ();
2906 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2908 p
+= hexnumstr (p
, addr
);
2910 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2914 error (_("Remote failure reply: %s"), p
);
2918 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2925 static VEC(static_tracepoint_marker_p
) *
2926 remote_static_tracepoint_markers_by_strid (const char *strid
)
2928 struct remote_state
*rs
= get_remote_state ();
2929 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2930 struct static_tracepoint_marker
*marker
= NULL
;
2931 struct cleanup
*old_chain
;
2934 /* Ask for a first packet of static tracepoint marker
2937 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2940 error (_("Remote failure reply: %s"), p
);
2942 old_chain
= make_cleanup (free_current_marker
, &marker
);
2947 marker
= XCNEW (struct static_tracepoint_marker
);
2951 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2953 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2955 VEC_safe_push (static_tracepoint_marker_p
,
2961 release_static_tracepoint_marker (marker
);
2962 memset (marker
, 0, sizeof (*marker
));
2965 while (*p
++ == ','); /* comma-separated list */
2966 /* Ask for another packet of static tracepoint definition. */
2968 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2972 do_cleanups (old_chain
);
2977 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2980 remote_get_ada_task_ptid (long lwp
, long thread
)
2982 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2986 /* Restart the remote side; this is an extended protocol operation. */
2989 extended_remote_restart (void)
2991 struct remote_state
*rs
= get_remote_state ();
2993 /* Send the restart command; for reasons I don't understand the
2994 remote side really expects a number after the "R". */
2995 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2998 remote_fileio_reset ();
3001 /* Clean up connection to a remote debugger. */
3004 remote_close (int quitting
)
3006 if (remote_desc
== NULL
)
3007 return; /* already closed */
3009 /* Make sure we leave stdin registered in the event loop, and we
3010 don't leave the async SIGINT signal handler installed. */
3011 remote_terminal_ours ();
3013 serial_close (remote_desc
);
3016 /* We don't have a connection to the remote stub anymore. Get rid
3017 of all the inferiors and their threads we were controlling.
3018 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3019 will be unable to find the thread corresponding to (pid, 0, 0). */
3020 inferior_ptid
= null_ptid
;
3021 discard_all_inferiors ();
3023 /* Stop replies may from inferiors which are still unknown to GDB.
3024 We are closing the remote target, so we should discard
3025 everything, including the stop replies from GDB-unknown
3027 discard_pending_stop_replies (NULL
);
3029 if (remote_async_inferior_event_token
)
3030 delete_async_event_handler (&remote_async_inferior_event_token
);
3032 remote_notif_unregister_async_event_handler ();
3035 /* Query the remote side for the text, data and bss offsets. */
3040 struct remote_state
*rs
= get_remote_state ();
3043 int lose
, num_segments
= 0, do_sections
, do_segments
;
3044 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3045 struct section_offsets
*offs
;
3046 struct symfile_segment_data
*data
;
3048 if (symfile_objfile
== NULL
)
3051 putpkt ("qOffsets");
3052 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3055 if (buf
[0] == '\000')
3056 return; /* Return silently. Stub doesn't support
3060 warning (_("Remote failure reply: %s"), buf
);
3064 /* Pick up each field in turn. This used to be done with scanf, but
3065 scanf will make trouble if CORE_ADDR size doesn't match
3066 conversion directives correctly. The following code will work
3067 with any size of CORE_ADDR. */
3068 text_addr
= data_addr
= bss_addr
= 0;
3072 if (strncmp (ptr
, "Text=", 5) == 0)
3075 /* Don't use strtol, could lose on big values. */
3076 while (*ptr
&& *ptr
!= ';')
3077 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3079 if (strncmp (ptr
, ";Data=", 6) == 0)
3082 while (*ptr
&& *ptr
!= ';')
3083 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3088 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3091 while (*ptr
&& *ptr
!= ';')
3092 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3094 if (bss_addr
!= data_addr
)
3095 warning (_("Target reported unsupported offsets: %s"), buf
);
3100 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3103 /* Don't use strtol, could lose on big values. */
3104 while (*ptr
&& *ptr
!= ';')
3105 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3108 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3111 while (*ptr
&& *ptr
!= ';')
3112 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3120 error (_("Malformed response to offset query, %s"), buf
);
3121 else if (*ptr
!= '\0')
3122 warning (_("Target reported unsupported offsets: %s"), buf
);
3124 offs
= ((struct section_offsets
*)
3125 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3126 memcpy (offs
, symfile_objfile
->section_offsets
,
3127 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3129 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3130 do_segments
= (data
!= NULL
);
3131 do_sections
= num_segments
== 0;
3133 if (num_segments
> 0)
3135 segments
[0] = text_addr
;
3136 segments
[1] = data_addr
;
3138 /* If we have two segments, we can still try to relocate everything
3139 by assuming that the .text and .data offsets apply to the whole
3140 text and data segments. Convert the offsets given in the packet
3141 to base addresses for symfile_map_offsets_to_segments. */
3142 else if (data
&& data
->num_segments
== 2)
3144 segments
[0] = data
->segment_bases
[0] + text_addr
;
3145 segments
[1] = data
->segment_bases
[1] + data_addr
;
3148 /* If the object file has only one segment, assume that it is text
3149 rather than data; main programs with no writable data are rare,
3150 but programs with no code are useless. Of course the code might
3151 have ended up in the data segment... to detect that we would need
3152 the permissions here. */
3153 else if (data
&& data
->num_segments
== 1)
3155 segments
[0] = data
->segment_bases
[0] + text_addr
;
3158 /* There's no way to relocate by segment. */
3164 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3165 offs
, num_segments
, segments
);
3167 if (ret
== 0 && !do_sections
)
3168 error (_("Can not handle qOffsets TextSeg "
3169 "response with this symbol file"));
3176 free_symfile_segment_data (data
);
3180 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3182 /* This is a temporary kludge to force data and bss to use the
3183 same offsets because that's what nlmconv does now. The real
3184 solution requires changes to the stub and remote.c that I
3185 don't have time to do right now. */
3187 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3188 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3191 objfile_relocate (symfile_objfile
, offs
);
3194 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3195 threads we know are stopped already. This is used during the
3196 initial remote connection in non-stop mode --- threads that are
3197 reported as already being stopped are left stopped. */
3200 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3202 /* If we have a stop reply for this thread, it must be stopped. */
3203 if (peek_stop_reply (thread
->ptid
))
3204 set_stop_requested (thread
->ptid
, 1);
3209 /* Send interrupt_sequence to remote target. */
3211 send_interrupt_sequence (void)
3213 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3214 remote_serial_write ("\x03", 1);
3215 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3216 serial_send_break (remote_desc
);
3217 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3219 serial_send_break (remote_desc
);
3220 remote_serial_write ("g", 1);
3223 internal_error (__FILE__
, __LINE__
,
3224 _("Invalid value for interrupt_sequence_mode: %s."),
3225 interrupt_sequence_mode
);
3229 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3230 and extract the PTID. Returns NULL_PTID if not found. */
3233 stop_reply_extract_thread (char *stop_reply
)
3235 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3239 /* Txx r:val ; r:val (...) */
3242 /* Look for "register" named "thread". */
3247 p1
= strchr (p
, ':');
3251 if (strncmp (p
, "thread", p1
- p
) == 0)
3252 return read_ptid (++p1
, &p
);
3254 p1
= strchr (p
, ';');
3266 /* Query the remote target for which is the current thread/process,
3267 add it to our tables, and update INFERIOR_PTID. The caller is
3268 responsible for setting the state such that the remote end is ready
3269 to return the current thread.
3271 This function is called after handling the '?' or 'vRun' packets,
3272 whose response is a stop reply from which we can also try
3273 extracting the thread. If the target doesn't support the explicit
3274 qC query, we infer the current thread from that stop reply, passed
3275 in in WAIT_STATUS, which may be NULL. */
3278 add_current_inferior_and_thread (char *wait_status
)
3280 struct remote_state
*rs
= get_remote_state ();
3282 ptid_t ptid
= null_ptid
;
3284 inferior_ptid
= null_ptid
;
3286 /* Now, if we have thread information, update inferior_ptid. First
3287 if we have a stop reply handy, maybe it's a T stop reply with a
3288 "thread" register we can extract the current thread from. If
3289 not, ask the remote which is the current thread, with qC. The
3290 former method avoids a roundtrip. Note we don't use
3291 remote_parse_stop_reply as that makes use of the target
3292 architecture, which we haven't yet fully determined at this
3294 if (wait_status
!= NULL
)
3295 ptid
= stop_reply_extract_thread (wait_status
);
3296 if (ptid_equal (ptid
, null_ptid
))
3297 ptid
= remote_current_thread (inferior_ptid
);
3299 if (!ptid_equal (ptid
, null_ptid
))
3301 if (!remote_multi_process_p (rs
))
3304 inferior_ptid
= ptid
;
3308 /* Without this, some commands which require an active target
3309 (such as kill) won't work. This variable serves (at least)
3310 double duty as both the pid of the target process (if it has
3311 such), and as a flag indicating that a target is active. */
3312 inferior_ptid
= magic_null_ptid
;
3316 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3318 /* Add the main thread. */
3319 add_thread_silent (inferior_ptid
);
3323 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3325 struct remote_state
*rs
= get_remote_state ();
3326 struct packet_config
*noack_config
;
3327 char *wait_status
= NULL
;
3329 immediate_quit
++; /* Allow user to interrupt it. */
3332 if (interrupt_on_connect
)
3333 send_interrupt_sequence ();
3335 /* Ack any packet which the remote side has already sent. */
3336 serial_write (remote_desc
, "+", 1);
3338 /* Signal other parts that we're going through the initial setup,
3339 and so things may not be stable yet. */
3340 rs
->starting_up
= 1;
3342 /* The first packet we send to the target is the optional "supported
3343 packets" request. If the target can answer this, it will tell us
3344 which later probes to skip. */
3345 remote_query_supported ();
3347 /* If the stub wants to get a QAllow, compose one and send it. */
3348 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3349 remote_set_permissions ();
3351 /* Next, we possibly activate noack mode.
3353 If the QStartNoAckMode packet configuration is set to AUTO,
3354 enable noack mode if the stub reported a wish for it with
3357 If set to TRUE, then enable noack mode even if the stub didn't
3358 report it in qSupported. If the stub doesn't reply OK, the
3359 session ends with an error.
3361 If FALSE, then don't activate noack mode, regardless of what the
3362 stub claimed should be the default with qSupported. */
3364 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3366 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3367 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3368 && noack_config
->support
== PACKET_ENABLE
))
3370 putpkt ("QStartNoAckMode");
3371 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3372 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3378 /* Tell the remote that we are using the extended protocol. */
3380 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3383 /* Let the target know which signals it is allowed to pass down to
3385 update_signals_program_target ();
3387 /* Next, if the target can specify a description, read it. We do
3388 this before anything involving memory or registers. */
3389 target_find_description ();
3391 /* Next, now that we know something about the target, update the
3392 address spaces in the program spaces. */
3393 update_address_spaces ();
3395 /* On OSs where the list of libraries is global to all
3396 processes, we fetch them early. */
3397 if (gdbarch_has_global_solist (target_gdbarch ()))
3398 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3402 if (!rs
->non_stop_aware
)
3403 error (_("Non-stop mode requested, but remote "
3404 "does not support non-stop"));
3406 putpkt ("QNonStop:1");
3407 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3409 if (strcmp (rs
->buf
, "OK") != 0)
3410 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3412 /* Find about threads and processes the stub is already
3413 controlling. We default to adding them in the running state.
3414 The '?' query below will then tell us about which threads are
3416 remote_threads_info (target
);
3418 else if (rs
->non_stop_aware
)
3420 /* Don't assume that the stub can operate in all-stop mode.
3421 Request it explicitly. */
3422 putpkt ("QNonStop:0");
3423 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3425 if (strcmp (rs
->buf
, "OK") != 0)
3426 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3429 /* Check whether the target is running now. */
3431 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3437 struct inferior
*inf
;
3439 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3442 error (_("The target is not running (try extended-remote?)"));
3444 /* We're connected, but not running. Drop out before we
3445 call start_remote. */
3446 rs
->starting_up
= 0;
3451 /* Save the reply for later. */
3452 wait_status
= alloca (strlen (rs
->buf
) + 1);
3453 strcpy (wait_status
, rs
->buf
);
3456 /* Let the stub know that we want it to return the thread. */
3457 set_continue_thread (minus_one_ptid
);
3459 add_current_inferior_and_thread (wait_status
);
3461 /* init_wait_for_inferior should be called before get_offsets in order
3462 to manage `inserted' flag in bp loc in a correct state.
3463 breakpoint_init_inferior, called from init_wait_for_inferior, set
3464 `inserted' flag to 0, while before breakpoint_re_set, called from
3465 start_remote, set `inserted' flag to 1. In the initialization of
3466 inferior, breakpoint_init_inferior should be called first, and then
3467 breakpoint_re_set can be called. If this order is broken, state of
3468 `inserted' flag is wrong, and cause some problems on breakpoint
3470 init_wait_for_inferior ();
3472 get_offsets (); /* Get text, data & bss offsets. */
3474 /* If we could not find a description using qXfer, and we know
3475 how to do it some other way, try again. This is not
3476 supported for non-stop; it could be, but it is tricky if
3477 there are no stopped threads when we connect. */
3478 if (remote_read_description_p (target
)
3479 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3481 target_clear_description ();
3482 target_find_description ();
3485 /* Use the previously fetched status. */
3486 gdb_assert (wait_status
!= NULL
);
3487 strcpy (rs
->buf
, wait_status
);
3488 rs
->cached_wait_status
= 1;
3491 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3495 /* Clear WFI global state. Do this before finding about new
3496 threads and inferiors, and setting the current inferior.
3497 Otherwise we would clear the proceed status of the current
3498 inferior when we want its stop_soon state to be preserved
3499 (see notice_new_inferior). */
3500 init_wait_for_inferior ();
3502 /* In non-stop, we will either get an "OK", meaning that there
3503 are no stopped threads at this time; or, a regular stop
3504 reply. In the latter case, there may be more than one thread
3505 stopped --- we pull them all out using the vStopped
3507 if (strcmp (rs
->buf
, "OK") != 0)
3509 struct notif_client
*notif
= ¬if_client_stop
;
3511 /* remote_notif_get_pending_replies acks this one, and gets
3513 notif_client_stop
.pending_event
3514 = remote_notif_parse (notif
, rs
->buf
);
3515 remote_notif_get_pending_events (notif
);
3517 /* Make sure that threads that were stopped remain
3519 iterate_over_threads (set_stop_requested_callback
, NULL
);
3522 if (target_can_async_p ())
3523 target_async (inferior_event_handler
, 0);
3525 if (thread_count () == 0)
3528 error (_("The target is not running (try extended-remote?)"));
3530 /* We're connected, but not running. Drop out before we
3531 call start_remote. */
3532 rs
->starting_up
= 0;
3536 /* Let the stub know that we want it to return the thread. */
3538 /* Force the stub to choose a thread. */
3539 set_general_thread (null_ptid
);
3542 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3543 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3544 error (_("remote didn't report the current thread in non-stop mode"));
3546 get_offsets (); /* Get text, data & bss offsets. */
3548 /* In non-stop mode, any cached wait status will be stored in
3549 the stop reply queue. */
3550 gdb_assert (wait_status
== NULL
);
3552 /* Report all signals during attach/startup. */
3553 remote_pass_signals (0, NULL
);
3556 /* If we connected to a live target, do some additional setup. */
3557 if (target_has_execution
)
3559 if (exec_bfd
) /* No use without an exec file. */
3560 remote_check_symbols (symfile_objfile
);
3563 /* Possibly the target has been engaged in a trace run started
3564 previously; find out where things are at. */
3565 if (remote_get_trace_status (current_trace_status ()) != -1)
3567 struct uploaded_tp
*uploaded_tps
= NULL
;
3568 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3570 if (current_trace_status ()->running
)
3571 printf_filtered (_("Trace is already running on the target.\n"));
3573 /* Get trace state variables first, they may be checked when
3574 parsing uploaded commands. */
3576 remote_upload_trace_state_variables (&uploaded_tsvs
);
3578 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3580 remote_upload_tracepoints (&uploaded_tps
);
3582 merge_uploaded_tracepoints (&uploaded_tps
);
3585 /* The thread and inferior lists are now synchronized with the
3586 target, our symbols have been relocated, and we're merged the
3587 target's tracepoints with ours. We're done with basic start
3589 rs
->starting_up
= 0;
3591 /* If breakpoints are global, insert them now. */
3592 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3593 && breakpoints_always_inserted_mode ())
3594 insert_breakpoints ();
3597 /* Open a connection to a remote debugger.
3598 NAME is the filename used for communication. */
3601 remote_open (char *name
, int from_tty
)
3603 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3606 /* Open a connection to a remote debugger using the extended
3607 remote gdb protocol. NAME is the filename used for communication. */
3610 extended_remote_open (char *name
, int from_tty
)
3612 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3615 /* Generic code for opening a connection to a remote target. */
3618 init_all_packet_configs (void)
3622 for (i
= 0; i
< PACKET_MAX
; i
++)
3623 update_packet_config (&remote_protocol_packets
[i
]);
3626 /* Symbol look-up. */
3629 remote_check_symbols (struct objfile
*objfile
)
3631 struct remote_state
*rs
= get_remote_state ();
3632 char *msg
, *reply
, *tmp
;
3633 struct minimal_symbol
*sym
;
3636 /* The remote side has no concept of inferiors that aren't running
3637 yet, it only knows about running processes. If we're connected
3638 but our current inferior is not running, we should not invite the
3639 remote target to request symbol lookups related to its
3640 (unrelated) current process. */
3641 if (!target_has_execution
)
3644 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3647 /* Make sure the remote is pointing at the right process. Note
3648 there's no way to select "no process". */
3649 set_general_process ();
3651 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3652 because we need both at the same time. */
3653 msg
= alloca (get_remote_packet_size ());
3655 /* Invite target to request symbol lookups. */
3657 putpkt ("qSymbol::");
3658 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3659 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3662 while (strncmp (reply
, "qSymbol:", 8) == 0)
3665 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3667 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3669 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3672 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3673 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3675 /* If this is a function address, return the start of code
3676 instead of any data function descriptor. */
3677 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3681 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3682 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3686 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3691 static struct serial
*
3692 remote_serial_open (char *name
)
3694 static int udp_warning
= 0;
3696 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3697 of in ser-tcp.c, because it is the remote protocol assuming that the
3698 serial connection is reliable and not the serial connection promising
3700 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3702 warning (_("The remote protocol may be unreliable over UDP.\n"
3703 "Some events may be lost, rendering further debugging "
3708 return serial_open (name
);
3711 /* Inform the target of our permission settings. The permission flags
3712 work without this, but if the target knows the settings, it can do
3713 a couple things. First, it can add its own check, to catch cases
3714 that somehow manage to get by the permissions checks in target
3715 methods. Second, if the target is wired to disallow particular
3716 settings (for instance, a system in the field that is not set up to
3717 be able to stop at a breakpoint), it can object to any unavailable
3721 remote_set_permissions (void)
3723 struct remote_state
*rs
= get_remote_state ();
3725 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3726 "WriteReg:%x;WriteMem:%x;"
3727 "InsertBreak:%x;InsertTrace:%x;"
3728 "InsertFastTrace:%x;Stop:%x",
3729 may_write_registers
, may_write_memory
,
3730 may_insert_breakpoints
, may_insert_tracepoints
,
3731 may_insert_fast_tracepoints
, may_stop
);
3733 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3735 /* If the target didn't like the packet, warn the user. Do not try
3736 to undo the user's settings, that would just be maddening. */
3737 if (strcmp (rs
->buf
, "OK") != 0)
3738 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3741 /* This type describes each known response to the qSupported
3743 struct protocol_feature
3745 /* The name of this protocol feature. */
3748 /* The default for this protocol feature. */
3749 enum packet_support default_support
;
3751 /* The function to call when this feature is reported, or after
3752 qSupported processing if the feature is not supported.
3753 The first argument points to this structure. The second
3754 argument indicates whether the packet requested support be
3755 enabled, disabled, or probed (or the default, if this function
3756 is being called at the end of processing and this feature was
3757 not reported). The third argument may be NULL; if not NULL, it
3758 is a NUL-terminated string taken from the packet following
3759 this feature's name and an equals sign. */
3760 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3763 /* The corresponding packet for this feature. Only used if
3764 FUNC is remote_supported_packet. */
3769 remote_supported_packet (const struct protocol_feature
*feature
,
3770 enum packet_support support
,
3771 const char *argument
)
3775 warning (_("Remote qSupported response supplied an unexpected value for"
3776 " \"%s\"."), feature
->name
);
3780 if (remote_protocol_packets
[feature
->packet
].support
3781 == PACKET_SUPPORT_UNKNOWN
)
3782 remote_protocol_packets
[feature
->packet
].support
= support
;
3786 remote_packet_size (const struct protocol_feature
*feature
,
3787 enum packet_support support
, const char *value
)
3789 struct remote_state
*rs
= get_remote_state ();
3794 if (support
!= PACKET_ENABLE
)
3797 if (value
== NULL
|| *value
== '\0')
3799 warning (_("Remote target reported \"%s\" without a size."),
3805 packet_size
= strtol (value
, &value_end
, 16);
3806 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3808 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3809 feature
->name
, value
);
3813 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3815 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3816 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3817 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3820 /* Record the new maximum packet size. */
3821 rs
->explicit_packet_size
= packet_size
;
3825 remote_multi_process_feature (const struct protocol_feature
*feature
,
3826 enum packet_support support
, const char *value
)
3828 struct remote_state
*rs
= get_remote_state ();
3830 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3834 remote_non_stop_feature (const struct protocol_feature
*feature
,
3835 enum packet_support support
, const char *value
)
3837 struct remote_state
*rs
= get_remote_state ();
3839 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3843 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3844 enum packet_support support
,
3847 struct remote_state
*rs
= get_remote_state ();
3849 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3853 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3854 enum packet_support support
,
3857 struct remote_state
*rs
= get_remote_state ();
3859 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3863 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3864 enum packet_support support
,
3867 struct remote_state
*rs
= get_remote_state ();
3869 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3873 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3874 enum packet_support support
,
3877 struct remote_state
*rs
= get_remote_state ();
3879 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3883 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3884 enum packet_support support
,
3887 struct remote_state
*rs
= get_remote_state ();
3889 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3893 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3894 enum packet_support support
,
3897 struct remote_state
*rs
= get_remote_state ();
3899 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3903 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3904 enum packet_support support
,
3907 struct remote_state
*rs
= get_remote_state ();
3909 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3913 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3914 enum packet_support support
,
3917 struct remote_state
*rs
= get_remote_state ();
3919 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3923 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3924 enum packet_support support
,
3927 struct remote_state
*rs
= get_remote_state ();
3929 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3932 static struct protocol_feature remote_protocol_features
[] = {
3933 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3934 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3935 PACKET_qXfer_auxv
},
3936 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3937 PACKET_qXfer_features
},
3938 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3939 PACKET_qXfer_libraries
},
3940 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3941 PACKET_qXfer_libraries_svr4
},
3942 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3943 PACKET_qXfer_memory_map
},
3944 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3945 PACKET_qXfer_spu_read
},
3946 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3947 PACKET_qXfer_spu_write
},
3948 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3949 PACKET_qXfer_osdata
},
3950 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3951 PACKET_qXfer_threads
},
3952 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3953 PACKET_qXfer_traceframe_info
},
3954 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3955 PACKET_QPassSignals
},
3956 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3957 PACKET_QProgramSignals
},
3958 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3959 PACKET_QStartNoAckMode
},
3960 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3961 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3962 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3963 PACKET_qXfer_siginfo_read
},
3964 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3965 PACKET_qXfer_siginfo_write
},
3966 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3967 PACKET_ConditionalTracepoints
},
3968 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3969 PACKET_ConditionalBreakpoints
},
3970 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3971 PACKET_BreakpointCommands
},
3972 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3973 PACKET_FastTracepoints
},
3974 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3975 PACKET_StaticTracepoints
},
3976 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3977 PACKET_InstallInTrace
},
3978 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3980 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3982 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3984 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3985 PACKET_TracepointSource
},
3986 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3988 { "EnableDisableTracepoints", PACKET_DISABLE
,
3989 remote_enable_disable_tracepoint_feature
, -1 },
3990 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_fdpic
},
3992 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3994 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3995 PACKET_QDisableRandomization
},
3996 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3997 { "QTBuffer:size", PACKET_DISABLE
,
3998 remote_supported_packet
, PACKET_QTBuffer_size
},
3999 { "tracenz", PACKET_DISABLE
,
4000 remote_string_tracing_feature
, -1 },
4001 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4002 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4003 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4004 PACKET_qXfer_btrace
}
4007 static char *remote_support_xml
;
4009 /* Register string appended to "xmlRegisters=" in qSupported query. */
4012 register_remote_support_xml (const char *xml
)
4014 #if defined(HAVE_LIBEXPAT)
4015 if (remote_support_xml
== NULL
)
4016 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4019 char *copy
= xstrdup (remote_support_xml
+ 13);
4020 char *p
= strtok (copy
, ",");
4024 if (strcmp (p
, xml
) == 0)
4031 while ((p
= strtok (NULL
, ",")) != NULL
);
4034 remote_support_xml
= reconcat (remote_support_xml
,
4035 remote_support_xml
, ",", xml
,
4042 remote_query_supported_append (char *msg
, const char *append
)
4045 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4047 return xstrdup (append
);
4051 remote_query_supported (void)
4053 struct remote_state
*rs
= get_remote_state ();
4056 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4058 /* The packet support flags are handled differently for this packet
4059 than for most others. We treat an error, a disabled packet, and
4060 an empty response identically: any features which must be reported
4061 to be used will be automatically disabled. An empty buffer
4062 accomplishes this, since that is also the representation for a list
4063 containing no features. */
4066 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4069 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4071 q
= remote_query_supported_append (q
, "multiprocess+");
4073 if (remote_support_xml
)
4074 q
= remote_query_supported_append (q
, remote_support_xml
);
4076 q
= remote_query_supported_append (q
, "qRelocInsn+");
4078 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4081 do_cleanups (old_chain
);
4083 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4085 /* If an error occured, warn, but do not return - just reset the
4086 buffer to empty and go on to disable features. */
4087 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4090 warning (_("Remote failure reply: %s"), rs
->buf
);
4095 memset (seen
, 0, sizeof (seen
));
4100 enum packet_support is_supported
;
4101 char *p
, *end
, *name_end
, *value
;
4103 /* First separate out this item from the rest of the packet. If
4104 there's another item after this, we overwrite the separator
4105 (terminated strings are much easier to work with). */
4107 end
= strchr (p
, ';');
4110 end
= p
+ strlen (p
);
4120 warning (_("empty item in \"qSupported\" response"));
4125 name_end
= strchr (p
, '=');
4128 /* This is a name=value entry. */
4129 is_supported
= PACKET_ENABLE
;
4130 value
= name_end
+ 1;
4139 is_supported
= PACKET_ENABLE
;
4143 is_supported
= PACKET_DISABLE
;
4147 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4151 warning (_("unrecognized item \"%s\" "
4152 "in \"qSupported\" response"), p
);
4158 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4159 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4161 const struct protocol_feature
*feature
;
4164 feature
= &remote_protocol_features
[i
];
4165 feature
->func (feature
, is_supported
, value
);
4170 /* If we increased the packet size, make sure to increase the global
4171 buffer size also. We delay this until after parsing the entire
4172 qSupported packet, because this is the same buffer we were
4174 if (rs
->buf_size
< rs
->explicit_packet_size
)
4176 rs
->buf_size
= rs
->explicit_packet_size
;
4177 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4180 /* Handle the defaults for unmentioned features. */
4181 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4184 const struct protocol_feature
*feature
;
4186 feature
= &remote_protocol_features
[i
];
4187 feature
->func (feature
, feature
->default_support
, NULL
);
4191 /* Remove any of the remote.c targets from target stack. Upper targets depend
4192 on it so remove them first. */
4195 remote_unpush_target (void)
4197 pop_all_targets_above (process_stratum
- 1, 0);
4201 remote_open_1 (char *name
, int from_tty
,
4202 struct target_ops
*target
, int extended_p
)
4204 struct remote_state
*rs
= get_remote_state ();
4207 error (_("To open a remote debug connection, you need to specify what\n"
4208 "serial device is attached to the remote system\n"
4209 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4211 /* See FIXME above. */
4212 if (!target_async_permitted
)
4213 wait_forever_enabled_p
= 1;
4215 /* If we're connected to a running target, target_preopen will kill it.
4216 Ask this question first, before target_preopen has a chance to kill
4218 if (remote_desc
!= NULL
&& !have_inferiors ())
4221 && !query (_("Already connected to a remote target. Disconnect? ")))
4222 error (_("Still connected."));
4225 /* Here the possibly existing remote target gets unpushed. */
4226 target_preopen (from_tty
);
4228 /* Make sure we send the passed signals list the next time we resume. */
4229 xfree (last_pass_packet
);
4230 last_pass_packet
= NULL
;
4232 /* Make sure we send the program signals list the next time we
4234 xfree (last_program_signals_packet
);
4235 last_program_signals_packet
= NULL
;
4237 remote_fileio_reset ();
4238 reopen_exec_file ();
4241 remote_desc
= remote_serial_open (name
);
4243 perror_with_name (name
);
4245 if (baud_rate
!= -1)
4247 if (serial_setbaudrate (remote_desc
, baud_rate
))
4249 /* The requested speed could not be set. Error out to
4250 top level after closing remote_desc. Take care to
4251 set remote_desc to NULL to avoid closing remote_desc
4253 serial_close (remote_desc
);
4255 perror_with_name (name
);
4259 serial_raw (remote_desc
);
4261 /* If there is something sitting in the buffer we might take it as a
4262 response to a command, which would be bad. */
4263 serial_flush_input (remote_desc
);
4267 puts_filtered ("Remote debugging using ");
4268 puts_filtered (name
);
4269 puts_filtered ("\n");
4271 push_target (target
); /* Switch to using remote target now. */
4273 /* Register extra event sources in the event loop. */
4274 remote_async_inferior_event_token
4275 = create_async_event_handler (remote_async_inferior_event_handler
,
4277 remote_notif_register_async_event_handler ();
4279 /* Reset the target state; these things will be queried either by
4280 remote_query_supported or as they are needed. */
4281 init_all_packet_configs ();
4282 rs
->cached_wait_status
= 0;
4283 rs
->explicit_packet_size
= 0;
4285 rs
->multi_process_aware
= 0;
4286 rs
->extended
= extended_p
;
4287 rs
->non_stop_aware
= 0;
4288 rs
->waiting_for_stop_reply
= 0;
4289 rs
->ctrlc_pending_p
= 0;
4291 general_thread
= not_sent_ptid
;
4292 continue_thread
= not_sent_ptid
;
4293 remote_traceframe_number
= -1;
4295 /* Probe for ability to use "ThreadInfo" query, as required. */
4296 use_threadinfo_query
= 1;
4297 use_threadextra_query
= 1;
4299 if (target_async_permitted
)
4301 /* With this target we start out by owning the terminal. */
4302 remote_async_terminal_ours_p
= 1;
4304 /* FIXME: cagney/1999-09-23: During the initial connection it is
4305 assumed that the target is already ready and able to respond to
4306 requests. Unfortunately remote_start_remote() eventually calls
4307 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4308 around this. Eventually a mechanism that allows
4309 wait_for_inferior() to expect/get timeouts will be
4311 wait_forever_enabled_p
= 0;
4314 /* First delete any symbols previously loaded from shared libraries. */
4315 no_shared_libraries (NULL
, 0);
4318 init_thread_list ();
4320 /* Start the remote connection. If error() or QUIT, discard this
4321 target (we'd otherwise be in an inconsistent state) and then
4322 propogate the error on up the exception chain. This ensures that
4323 the caller doesn't stumble along blindly assuming that the
4324 function succeeded. The CLI doesn't have this problem but other
4325 UI's, such as MI do.
4327 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4328 this function should return an error indication letting the
4329 caller restore the previous state. Unfortunately the command
4330 ``target remote'' is directly wired to this function making that
4331 impossible. On a positive note, the CLI side of this problem has
4332 been fixed - the function set_cmd_context() makes it possible for
4333 all the ``target ....'' commands to share a common callback
4334 function. See cli-dump.c. */
4336 volatile struct gdb_exception ex
;
4338 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4340 remote_start_remote (from_tty
, target
, extended_p
);
4344 /* Pop the partially set up target - unless something else did
4345 already before throwing the exception. */
4346 if (remote_desc
!= NULL
)
4347 remote_unpush_target ();
4348 if (target_async_permitted
)
4349 wait_forever_enabled_p
= 1;
4350 throw_exception (ex
);
4354 if (target_async_permitted
)
4355 wait_forever_enabled_p
= 1;
4358 /* This takes a program previously attached to and detaches it. After
4359 this is done, GDB can be used to debug some other program. We
4360 better not have left any breakpoints in the target program or it'll
4361 die when it hits one. */
4364 remote_detach_1 (char *args
, int from_tty
, int extended
)
4366 int pid
= ptid_get_pid (inferior_ptid
);
4367 struct remote_state
*rs
= get_remote_state ();
4370 error (_("Argument given to \"detach\" when remotely debugging."));
4372 if (!target_has_execution
)
4373 error (_("No process to detach from."));
4377 char *exec_file
= get_exec_file (0);
4378 if (exec_file
== NULL
)
4380 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4381 target_pid_to_str (pid_to_ptid (pid
)));
4382 gdb_flush (gdb_stdout
);
4385 /* Tell the remote target to detach. */
4386 if (remote_multi_process_p (rs
))
4387 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4389 strcpy (rs
->buf
, "D");
4392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4394 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4396 else if (rs
->buf
[0] == '\0')
4397 error (_("Remote doesn't know how to detach"));
4399 error (_("Can't detach process."));
4401 if (from_tty
&& !extended
)
4402 puts_filtered (_("Ending remote debugging.\n"));
4404 target_mourn_inferior ();
4408 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4410 remote_detach_1 (args
, from_tty
, 0);
4414 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4416 remote_detach_1 (args
, from_tty
, 1);
4419 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4422 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4425 error (_("Argument given to \"disconnect\" when remotely debugging."));
4427 /* Make sure we unpush even the extended remote targets; mourn
4428 won't do it. So call remote_mourn_1 directly instead of
4429 target_mourn_inferior. */
4430 remote_mourn_1 (target
);
4433 puts_filtered ("Ending remote debugging.\n");
4436 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4437 be chatty about it. */
4440 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4442 struct remote_state
*rs
= get_remote_state ();
4444 char *wait_status
= NULL
;
4446 pid
= parse_pid_to_attach (args
);
4448 /* Remote PID can be freely equal to getpid, do not check it here the same
4449 way as in other targets. */
4451 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4452 error (_("This target does not support attaching to a process"));
4456 char *exec_file
= get_exec_file (0);
4459 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4460 target_pid_to_str (pid_to_ptid (pid
)));
4462 printf_unfiltered (_("Attaching to %s\n"),
4463 target_pid_to_str (pid_to_ptid (pid
)));
4465 gdb_flush (gdb_stdout
);
4468 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4470 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4472 if (packet_ok (rs
->buf
,
4473 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4477 /* Save the reply for later. */
4478 wait_status
= alloca (strlen (rs
->buf
) + 1);
4479 strcpy (wait_status
, rs
->buf
);
4481 else if (strcmp (rs
->buf
, "OK") != 0)
4482 error (_("Attaching to %s failed with: %s"),
4483 target_pid_to_str (pid_to_ptid (pid
)),
4486 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4487 error (_("This target does not support attaching to a process"));
4489 error (_("Attaching to %s failed"),
4490 target_pid_to_str (pid_to_ptid (pid
)));
4492 set_current_inferior (remote_add_inferior (0, pid
, 1));
4494 inferior_ptid
= pid_to_ptid (pid
);
4498 struct thread_info
*thread
;
4500 /* Get list of threads. */
4501 remote_threads_info (target
);
4503 thread
= first_thread_of_process (pid
);
4505 inferior_ptid
= thread
->ptid
;
4507 inferior_ptid
= pid_to_ptid (pid
);
4509 /* Invalidate our notion of the remote current thread. */
4510 record_currthread (minus_one_ptid
);
4514 /* Now, if we have thread information, update inferior_ptid. */
4515 inferior_ptid
= remote_current_thread (inferior_ptid
);
4517 /* Add the main thread to the thread list. */
4518 add_thread_silent (inferior_ptid
);
4521 /* Next, if the target can specify a description, read it. We do
4522 this before anything involving memory or registers. */
4523 target_find_description ();
4527 /* Use the previously fetched status. */
4528 gdb_assert (wait_status
!= NULL
);
4530 if (target_can_async_p ())
4532 struct notif_event
*reply
4533 = remote_notif_parse (¬if_client_stop
, wait_status
);
4535 push_stop_reply ((struct stop_reply
*) reply
);
4537 target_async (inferior_event_handler
, 0);
4541 gdb_assert (wait_status
!= NULL
);
4542 strcpy (rs
->buf
, wait_status
);
4543 rs
->cached_wait_status
= 1;
4547 gdb_assert (wait_status
== NULL
);
4551 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4553 extended_remote_attach_1 (ops
, args
, from_tty
);
4556 /* Convert hex digit A to a number. */
4561 if (a
>= '0' && a
<= '9')
4563 else if (a
>= 'a' && a
<= 'f')
4564 return a
- 'a' + 10;
4565 else if (a
>= 'A' && a
<= 'F')
4566 return a
- 'A' + 10;
4568 error (_("Reply contains invalid hex digit %d"), a
);
4572 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4576 for (i
= 0; i
< count
; i
++)
4578 if (hex
[0] == 0 || hex
[1] == 0)
4580 /* Hex string is short, or of uneven length.
4581 Return the count that has been converted so far. */
4584 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4590 /* Convert number NIB to a hex digit. */
4598 return 'a' + nib
- 10;
4602 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4606 /* May use a length, or a nul-terminated string as input. */
4608 count
= strlen ((char *) bin
);
4610 for (i
= 0; i
< count
; i
++)
4612 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4613 *hex
++ = tohex (*bin
++ & 0xf);
4619 /* Check for the availability of vCont. This function should also check
4623 remote_vcont_probe (struct remote_state
*rs
)
4627 strcpy (rs
->buf
, "vCont?");
4629 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4632 /* Make sure that the features we assume are supported. */
4633 if (strncmp (buf
, "vCont", 5) == 0)
4636 int support_s
, support_S
, support_c
, support_C
;
4642 rs
->support_vCont_t
= 0;
4643 while (p
&& *p
== ';')
4646 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4648 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4650 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4652 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4654 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4655 rs
->support_vCont_t
= 1;
4657 p
= strchr (p
, ';');
4660 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4661 BUF will make packet_ok disable the packet. */
4662 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4666 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4669 /* Helper function for building "vCont" resumptions. Write a
4670 resumption to P. ENDP points to one-passed-the-end of the buffer
4671 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4672 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4673 resumed thread should be single-stepped and/or signalled. If PTID
4674 equals minus_one_ptid, then all threads are resumed; if PTID
4675 represents a process, then all threads of the process are resumed;
4676 the thread to be stepped and/or signalled is given in the global
4680 append_resumption (char *p
, char *endp
,
4681 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4683 struct remote_state
*rs
= get_remote_state ();
4685 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4686 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4688 p
+= xsnprintf (p
, endp
- p
, ";s");
4689 else if (siggnal
!= GDB_SIGNAL_0
)
4690 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4692 p
+= xsnprintf (p
, endp
- p
, ";c");
4694 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4698 /* All (-1) threads of process. */
4699 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4701 p
+= xsnprintf (p
, endp
- p
, ":");
4702 p
= write_ptid (p
, endp
, nptid
);
4704 else if (!ptid_equal (ptid
, minus_one_ptid
))
4706 p
+= xsnprintf (p
, endp
- p
, ":");
4707 p
= write_ptid (p
, endp
, ptid
);
4713 /* Append a vCont continue-with-signal action for threads that have a
4714 non-zero stop signal. */
4717 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4719 struct thread_info
*thread
;
4721 ALL_THREADS (thread
)
4722 if (ptid_match (thread
->ptid
, ptid
)
4723 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4724 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4725 && signal_pass_state (thread
->suspend
.stop_signal
))
4727 p
= append_resumption (p
, endp
, thread
->ptid
,
4728 0, thread
->suspend
.stop_signal
);
4729 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4735 /* Resume the remote inferior by using a "vCont" packet. The thread
4736 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4737 resumed thread should be single-stepped and/or signalled. If PTID
4738 equals minus_one_ptid, then all threads are resumed; the thread to
4739 be stepped and/or signalled is given in the global INFERIOR_PTID.
4740 This function returns non-zero iff it resumes the inferior.
4742 This function issues a strict subset of all possible vCont commands at the
4746 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4748 struct remote_state
*rs
= get_remote_state ();
4752 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4753 remote_vcont_probe (rs
);
4755 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4759 endp
= rs
->buf
+ get_remote_packet_size ();
4761 /* If we could generate a wider range of packets, we'd have to worry
4762 about overflowing BUF. Should there be a generic
4763 "multi-part-packet" packet? */
4765 p
+= xsnprintf (p
, endp
- p
, "vCont");
4767 if (ptid_equal (ptid
, magic_null_ptid
))
4769 /* MAGIC_NULL_PTID means that we don't have any active threads,
4770 so we don't have any TID numbers the inferior will
4771 understand. Make sure to only send forms that do not specify
4773 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4775 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4777 /* Resume all threads (of all processes, or of a single
4778 process), with preference for INFERIOR_PTID. This assumes
4779 inferior_ptid belongs to the set of all threads we are about
4781 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4783 /* Step inferior_ptid, with or without signal. */
4784 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4787 /* Also pass down any pending signaled resumption for other
4788 threads not the current. */
4789 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4791 /* And continue others without a signal. */
4792 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4796 /* Scheduler locking; resume only PTID. */
4797 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4800 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4805 /* In non-stop, the stub replies to vCont with "OK". The stop
4806 reply will be reported asynchronously by means of a `%Stop'
4808 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4809 if (strcmp (rs
->buf
, "OK") != 0)
4810 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4816 /* Tell the remote machine to resume. */
4818 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4820 static int last_sent_step
;
4823 remote_resume (struct target_ops
*ops
,
4824 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4826 struct remote_state
*rs
= get_remote_state ();
4829 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4830 (explained in remote-notif.c:handle_notification) so
4831 remote_notif_process is not called. We need find a place where
4832 it is safe to start a 'vNotif' sequence. It is good to do it
4833 before resuming inferior, because inferior was stopped and no RSP
4834 traffic at that moment. */
4836 remote_notif_process (¬if_client_stop
);
4838 last_sent_signal
= siggnal
;
4839 last_sent_step
= step
;
4841 /* The vCont packet doesn't need to specify threads via Hc. */
4842 /* No reverse support (yet) for vCont. */
4843 if (execution_direction
!= EXEC_REVERSE
)
4844 if (remote_vcont_resume (ptid
, step
, siggnal
))
4847 /* All other supported resume packets do use Hc, so set the continue
4849 if (ptid_equal (ptid
, minus_one_ptid
))
4850 set_continue_thread (any_thread_ptid
);
4852 set_continue_thread (ptid
);
4855 if (execution_direction
== EXEC_REVERSE
)
4857 /* We don't pass signals to the target in reverse exec mode. */
4858 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4859 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4863 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4864 error (_("Remote reverse-step not supported."));
4866 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4867 error (_("Remote reverse-continue not supported."));
4869 strcpy (buf
, step
? "bs" : "bc");
4871 else if (siggnal
!= GDB_SIGNAL_0
)
4873 buf
[0] = step
? 'S' : 'C';
4874 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4875 buf
[2] = tohex (((int) siggnal
) & 0xf);
4879 strcpy (buf
, step
? "s" : "c");
4884 /* We are about to start executing the inferior, let's register it
4885 with the event loop. NOTE: this is the one place where all the
4886 execution commands end up. We could alternatively do this in each
4887 of the execution commands in infcmd.c. */
4888 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4889 into infcmd.c in order to allow inferior function calls to work
4890 NOT asynchronously. */
4891 if (target_can_async_p ())
4892 target_async (inferior_event_handler
, 0);
4894 /* We've just told the target to resume. The remote server will
4895 wait for the inferior to stop, and then send a stop reply. In
4896 the mean time, we can't start another command/query ourselves
4897 because the stub wouldn't be ready to process it. This applies
4898 only to the base all-stop protocol, however. In non-stop (which
4899 only supports vCont), the stub replies with an "OK", and is
4900 immediate able to process further serial input. */
4902 rs
->waiting_for_stop_reply
= 1;
4906 /* Set up the signal handler for SIGINT, while the target is
4907 executing, ovewriting the 'regular' SIGINT signal handler. */
4909 initialize_sigint_signal_handler (void)
4911 signal (SIGINT
, handle_remote_sigint
);
4914 /* Signal handler for SIGINT, while the target is executing. */
4916 handle_remote_sigint (int sig
)
4918 signal (sig
, handle_remote_sigint_twice
);
4919 mark_async_signal_handler (sigint_remote_token
);
4922 /* Signal handler for SIGINT, installed after SIGINT has already been
4923 sent once. It will take effect the second time that the user sends
4926 handle_remote_sigint_twice (int sig
)
4928 signal (sig
, handle_remote_sigint
);
4929 mark_async_signal_handler (sigint_remote_twice_token
);
4932 /* Perform the real interruption of the target execution, in response
4935 async_remote_interrupt (gdb_client_data arg
)
4938 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4940 target_stop (inferior_ptid
);
4943 /* Perform interrupt, if the first attempt did not succeed. Just give
4944 up on the target alltogether. */
4946 async_remote_interrupt_twice (gdb_client_data arg
)
4949 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4954 /* Reinstall the usual SIGINT handlers, after the target has
4957 cleanup_sigint_signal_handler (void *dummy
)
4959 signal (SIGINT
, handle_sigint
);
4962 /* Send ^C to target to halt it. Target will respond, and send us a
4964 static void (*ofunc
) (int);
4966 /* The command line interface's stop routine. This function is installed
4967 as a signal handler for SIGINT. The first time a user requests a
4968 stop, we call remote_stop to send a break or ^C. If there is no
4969 response from the target (it didn't stop when the user requested it),
4970 we ask the user if he'd like to detach from the target. */
4972 remote_interrupt (int signo
)
4974 /* If this doesn't work, try more severe steps. */
4975 signal (signo
, remote_interrupt_twice
);
4977 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4980 /* The user typed ^C twice. */
4983 remote_interrupt_twice (int signo
)
4985 signal (signo
, ofunc
);
4986 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4987 signal (signo
, remote_interrupt
);
4990 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4991 thread, all threads of a remote process, or all threads of all
4995 remote_stop_ns (ptid_t ptid
)
4997 struct remote_state
*rs
= get_remote_state ();
4999 char *endp
= rs
->buf
+ get_remote_packet_size ();
5001 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5002 remote_vcont_probe (rs
);
5004 if (!rs
->support_vCont_t
)
5005 error (_("Remote server does not support stopping threads"));
5007 if (ptid_equal (ptid
, minus_one_ptid
)
5008 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5009 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5014 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5016 if (ptid_is_pid (ptid
))
5017 /* All (-1) threads of process. */
5018 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5021 /* Small optimization: if we already have a stop reply for
5022 this thread, no use in telling the stub we want this
5024 if (peek_stop_reply (ptid
))
5030 write_ptid (p
, endp
, nptid
);
5033 /* In non-stop, we get an immediate OK reply. The stop reply will
5034 come in asynchronously by notification. */
5036 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5037 if (strcmp (rs
->buf
, "OK") != 0)
5038 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5041 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5042 remote target. It is undefined which thread of which process
5043 reports the stop. */
5046 remote_stop_as (ptid_t ptid
)
5048 struct remote_state
*rs
= get_remote_state ();
5050 rs
->ctrlc_pending_p
= 1;
5052 /* If the inferior is stopped already, but the core didn't know
5053 about it yet, just ignore the request. The cached wait status
5054 will be collected in remote_wait. */
5055 if (rs
->cached_wait_status
)
5058 /* Send interrupt_sequence to remote target. */
5059 send_interrupt_sequence ();
5062 /* This is the generic stop called via the target vector. When a target
5063 interrupt is requested, either by the command line or the GUI, we
5064 will eventually end up here. */
5067 remote_stop (ptid_t ptid
)
5070 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5073 remote_stop_ns (ptid
);
5075 remote_stop_as (ptid
);
5078 /* Ask the user what to do when an interrupt is received. */
5081 interrupt_query (void)
5083 target_terminal_ours ();
5085 if (target_can_async_p ())
5087 signal (SIGINT
, handle_sigint
);
5088 deprecated_throw_reason (RETURN_QUIT
);
5092 if (query (_("Interrupted while waiting for the program.\n\
5093 Give up (and stop debugging it)? ")))
5095 remote_unpush_target ();
5096 deprecated_throw_reason (RETURN_QUIT
);
5100 target_terminal_inferior ();
5103 /* Enable/disable target terminal ownership. Most targets can use
5104 terminal groups to control terminal ownership. Remote targets are
5105 different in that explicit transfer of ownership to/from GDB/target
5109 remote_terminal_inferior (void)
5111 if (!target_async_permitted
)
5112 /* Nothing to do. */
5115 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5116 idempotent. The event-loop GDB talking to an asynchronous target
5117 with a synchronous command calls this function from both
5118 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5119 transfer the terminal to the target when it shouldn't this guard
5121 if (!remote_async_terminal_ours_p
)
5123 delete_file_handler (input_fd
);
5124 remote_async_terminal_ours_p
= 0;
5125 initialize_sigint_signal_handler ();
5126 /* NOTE: At this point we could also register our selves as the
5127 recipient of all input. Any characters typed could then be
5128 passed on down to the target. */
5132 remote_terminal_ours (void)
5134 if (!target_async_permitted
)
5135 /* Nothing to do. */
5138 /* See FIXME in remote_terminal_inferior. */
5139 if (remote_async_terminal_ours_p
)
5141 cleanup_sigint_signal_handler (NULL
);
5142 add_file_handler (input_fd
, stdin_event_handler
, 0);
5143 remote_async_terminal_ours_p
= 1;
5147 remote_console_output (char *msg
)
5151 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5154 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5158 fputs_unfiltered (tb
, gdb_stdtarg
);
5160 gdb_flush (gdb_stdtarg
);
5163 typedef struct cached_reg
5166 gdb_byte data
[MAX_REGISTER_SIZE
];
5169 DEF_VEC_O(cached_reg_t
);
5171 typedef struct stop_reply
5173 struct notif_event base
;
5175 /* The identifier of the thread about this event */
5178 struct target_waitstatus ws
;
5180 /* Expedited registers. This makes remote debugging a bit more
5181 efficient for those targets that provide critical registers as
5182 part of their normal status mechanism (as another roundtrip to
5183 fetch them is avoided). */
5184 VEC(cached_reg_t
) *regcache
;
5186 int stopped_by_watchpoint_p
;
5187 CORE_ADDR watch_data_address
;
5195 DECLARE_QUEUE_P (stop_reply_p
);
5196 DEFINE_QUEUE_P (stop_reply_p
);
5197 /* The list of already fetched and acknowledged stop events. This
5198 queue is used for notification Stop, and other notifications
5199 don't need queue for their events, because the notification events
5200 of Stop can't be consumed immediately, so that events should be
5201 queued first, and be consumed by remote_wait_{ns,as} one per
5202 time. Other notifications can consume their events immediately,
5203 so queue is not needed for them. */
5204 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5207 stop_reply_xfree (struct stop_reply
*r
)
5211 VEC_free (cached_reg_t
, r
->regcache
);
5217 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5218 struct notif_event
*event
)
5220 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5224 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5225 struct notif_event
*event
)
5227 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5230 putpkt ((char *) self
->ack_command
);
5232 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5233 /* We got an unknown stop reply. */
5234 error (_("Unknown stop reply"));
5236 push_stop_reply (stop_reply
);
5240 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5242 /* We can't get pending events in remote_notif_process for
5243 notification stop, and we have to do this in remote_wait_ns
5244 instead. If we fetch all queued events from stub, remote stub
5245 may exit and we have no chance to process them back in
5247 mark_async_event_handler (remote_async_inferior_event_token
);
5252 stop_reply_dtr (struct notif_event
*event
)
5254 struct stop_reply
*r
= (struct stop_reply
*) event
;
5256 VEC_free (cached_reg_t
, r
->regcache
);
5259 static struct notif_event
*
5260 remote_notif_stop_alloc_reply (void)
5262 struct notif_event
*r
5263 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5265 r
->dtr
= stop_reply_dtr
;
5270 /* A client of notification Stop. */
5272 struct notif_client notif_client_stop
=
5276 remote_notif_stop_parse
,
5277 remote_notif_stop_ack
,
5278 remote_notif_stop_can_get_pending_events
,
5279 remote_notif_stop_alloc_reply
,
5283 /* A parameter to pass data in and out. */
5285 struct queue_iter_param
5288 struct stop_reply
*output
;
5291 /* Remove all queue elements meet the condition it checks. */
5294 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5295 QUEUE_ITER (stop_reply_p
) *iter
,
5299 struct queue_iter_param
*param
= data
;
5300 struct inferior
*inf
= param
->input
;
5302 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5304 stop_reply_xfree (event
);
5305 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5311 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5312 discard everything. */
5315 discard_pending_stop_replies (struct inferior
*inf
)
5318 struct queue_iter_param param
;
5319 struct stop_reply
*reply
5320 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5322 /* Discard the in-flight notification. */
5325 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5327 stop_reply_xfree (reply
);
5328 notif_client_stop
.pending_event
= NULL
;
5332 param
.output
= NULL
;
5333 /* Discard the stop replies we have already pulled with
5335 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5336 remote_notif_remove_all
, ¶m
);
5339 /* A parameter to pass data in and out. */
5342 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5343 QUEUE_ITER (stop_reply_p
) *iter
,
5347 struct queue_iter_param
*param
= data
;
5348 ptid_t
*ptid
= param
->input
;
5350 if (ptid_match (event
->ptid
, *ptid
))
5352 param
->output
= event
;
5353 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5360 /* Remove the first reply in 'stop_reply_queue' which matches
5363 static struct stop_reply
*
5364 remote_notif_remove_queued_reply (ptid_t ptid
)
5366 struct queue_iter_param param
;
5368 param
.input
= &ptid
;
5369 param
.output
= NULL
;
5371 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5372 remote_notif_remove_once_on_match
, ¶m
);
5374 fprintf_unfiltered (gdb_stdlog
,
5375 "notif: discard queued event: 'Stop' in %s\n",
5376 target_pid_to_str (ptid
));
5378 return param
.output
;
5381 /* Look for a queued stop reply belonging to PTID. If one is found,
5382 remove it from the queue, and return it. Returns NULL if none is
5383 found. If there are still queued events left to process, tell the
5384 event loop to get back to target_wait soon. */
5386 static struct stop_reply
*
5387 queued_stop_reply (ptid_t ptid
)
5389 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5391 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5392 /* There's still at least an event left. */
5393 mark_async_event_handler (remote_async_inferior_event_token
);
5398 /* Push a fully parsed stop reply in the stop reply queue. Since we
5399 know that we now have at least one queued event left to pass to the
5400 core side, tell the event loop to get back to target_wait soon. */
5403 push_stop_reply (struct stop_reply
*new_event
)
5405 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5408 fprintf_unfiltered (gdb_stdlog
,
5409 "notif: push 'Stop' %s to queue %d\n",
5410 target_pid_to_str (new_event
->ptid
),
5411 QUEUE_length (stop_reply_p
,
5414 mark_async_event_handler (remote_async_inferior_event_token
);
5418 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5419 QUEUE_ITER (stop_reply_p
) *iter
,
5420 struct stop_reply
*event
,
5423 ptid_t
*ptid
= data
;
5425 return !(ptid_equal (*ptid
, event
->ptid
)
5426 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5429 /* Returns true if we have a stop reply for PTID. */
5432 peek_stop_reply (ptid_t ptid
)
5434 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5435 stop_reply_match_ptid_and_ws
, &ptid
);
5438 /* Parse the stop reply in BUF. Either the function succeeds, and the
5439 result is stored in EVENT, or throws an error. */
5442 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5444 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5448 event
->ptid
= null_ptid
;
5449 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5450 event
->ws
.value
.integer
= 0;
5451 event
->solibs_changed
= 0;
5452 event
->replay_event
= 0;
5453 event
->stopped_by_watchpoint_p
= 0;
5454 event
->regcache
= NULL
;
5459 case 'T': /* Status with PC, SP, FP, ... */
5460 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5461 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5463 n... = register number
5464 r... = register contents
5467 p
= &buf
[3]; /* after Txx */
5475 /* If the packet contains a register number, save it in
5476 pnum and set p1 to point to the character following it.
5477 Otherwise p1 points to p. */
5479 /* If this packet is an awatch packet, don't parse the 'a'
5480 as a register number. */
5482 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5483 && strncmp (p
, "core", strlen ("core") != 0))
5485 /* Read the ``P'' register number. */
5486 pnum
= strtol (p
, &p_temp
, 16);
5492 if (p1
== p
) /* No register number present here. */
5494 p1
= strchr (p
, ':');
5496 error (_("Malformed packet(a) (missing colon): %s\n\
5499 if (strncmp (p
, "thread", p1
- p
) == 0)
5500 event
->ptid
= read_ptid (++p1
, &p
);
5501 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5502 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5503 || (strncmp (p
, "awatch", p1
- p
) == 0))
5505 event
->stopped_by_watchpoint_p
= 1;
5506 p
= unpack_varlen_hex (++p1
, &addr
);
5507 event
->watch_data_address
= (CORE_ADDR
) addr
;
5509 else if (strncmp (p
, "library", p1
- p
) == 0)
5513 while (*p_temp
&& *p_temp
!= ';')
5516 event
->solibs_changed
= 1;
5519 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5521 /* NO_HISTORY event.
5522 p1 will indicate "begin" or "end", but
5523 it makes no difference for now, so ignore it. */
5524 event
->replay_event
= 1;
5525 p_temp
= strchr (p1
+ 1, ';');
5529 else if (strncmp (p
, "core", p1
- p
) == 0)
5533 p
= unpack_varlen_hex (++p1
, &c
);
5538 /* Silently skip unknown optional info. */
5539 p_temp
= strchr (p1
+ 1, ';');
5546 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5547 cached_reg_t cached_reg
;
5552 error (_("Malformed packet(b) (missing colon): %s\n\
5558 error (_("Remote sent bad register number %s: %s\n\
5560 hex_string (pnum
), p
, buf
);
5562 cached_reg
.num
= reg
->regnum
;
5564 fieldsize
= hex2bin (p
, cached_reg
.data
,
5565 register_size (target_gdbarch (),
5568 if (fieldsize
< register_size (target_gdbarch (),
5570 warning (_("Remote reply is too short: %s"), buf
);
5572 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5576 error (_("Remote register badly formatted: %s\nhere: %s"),
5581 case 'S': /* Old style status, just signal only. */
5582 if (event
->solibs_changed
)
5583 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5584 else if (event
->replay_event
)
5585 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5588 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5589 event
->ws
.value
.sig
= (enum gdb_signal
)
5590 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5593 case 'W': /* Target exited. */
5600 /* GDB used to accept only 2 hex chars here. Stubs should
5601 only send more if they detect GDB supports multi-process
5603 p
= unpack_varlen_hex (&buf
[1], &value
);
5607 /* The remote process exited. */
5608 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5609 event
->ws
.value
.integer
= value
;
5613 /* The remote process exited with a signal. */
5614 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5615 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5618 /* If no process is specified, assume inferior_ptid. */
5619 pid
= ptid_get_pid (inferior_ptid
);
5628 else if (strncmp (p
,
5629 "process:", sizeof ("process:") - 1) == 0)
5633 p
+= sizeof ("process:") - 1;
5634 unpack_varlen_hex (p
, &upid
);
5638 error (_("unknown stop reply packet: %s"), buf
);
5641 error (_("unknown stop reply packet: %s"), buf
);
5642 event
->ptid
= pid_to_ptid (pid
);
5647 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5648 error (_("No process or thread specified in stop reply: %s"), buf
);
5651 /* When the stub wants to tell GDB about a new notification reply, it
5652 sends a notification (%Stop, for example). Those can come it at
5653 any time, hence, we have to make sure that any pending
5654 putpkt/getpkt sequence we're making is finished, before querying
5655 the stub for more events with the corresponding ack command
5656 (vStopped, for example). E.g., if we started a vStopped sequence
5657 immediately upon receiving the notification, something like this
5665 1.6) <-- (registers reply to step #1.3)
5667 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5670 To solve this, whenever we parse a %Stop notification successfully,
5671 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5672 doing whatever we were doing:
5678 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5679 2.5) <-- (registers reply to step #2.3)
5681 Eventualy after step #2.5, we return to the event loop, which
5682 notices there's an event on the
5683 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5684 associated callback --- the function below. At this point, we're
5685 always safe to start a vStopped sequence. :
5688 2.7) <-- T05 thread:2
5694 remote_notif_get_pending_events (struct notif_client
*nc
)
5696 struct remote_state
*rs
= get_remote_state ();
5698 if (nc
->pending_event
)
5701 fprintf_unfiltered (gdb_stdlog
,
5702 "notif: process: '%s' ack pending event\n",
5706 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5707 nc
->pending_event
= NULL
;
5711 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5712 if (strcmp (rs
->buf
, "OK") == 0)
5715 remote_notif_ack (nc
, rs
->buf
);
5721 fprintf_unfiltered (gdb_stdlog
,
5722 "notif: process: '%s' no pending reply\n",
5727 /* Called when it is decided that STOP_REPLY holds the info of the
5728 event that is to be returned to the core. This function always
5729 destroys STOP_REPLY. */
5732 process_stop_reply (struct stop_reply
*stop_reply
,
5733 struct target_waitstatus
*status
)
5737 *status
= stop_reply
->ws
;
5738 ptid
= stop_reply
->ptid
;
5740 /* If no thread/process was reported by the stub, assume the current
5742 if (ptid_equal (ptid
, null_ptid
))
5743 ptid
= inferior_ptid
;
5745 if (status
->kind
!= TARGET_WAITKIND_EXITED
5746 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5748 /* Expedited registers. */
5749 if (stop_reply
->regcache
)
5751 struct regcache
*regcache
5752 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5757 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5759 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5760 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5763 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5764 remote_watch_data_address
= stop_reply
->watch_data_address
;
5766 remote_notice_new_inferior (ptid
, 0);
5767 demand_private_info (ptid
)->core
= stop_reply
->core
;
5770 stop_reply_xfree (stop_reply
);
5774 /* The non-stop mode version of target_wait. */
5777 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5779 struct remote_state
*rs
= get_remote_state ();
5780 struct stop_reply
*stop_reply
;
5784 /* If in non-stop mode, get out of getpkt even if a
5785 notification is received. */
5787 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5788 0 /* forever */, &is_notif
);
5791 if (ret
!= -1 && !is_notif
)
5794 case 'E': /* Error of some sort. */
5795 /* We're out of sync with the target now. Did it continue
5796 or not? We can't tell which thread it was in non-stop,
5797 so just ignore this. */
5798 warning (_("Remote failure reply: %s"), rs
->buf
);
5800 case 'O': /* Console output. */
5801 remote_console_output (rs
->buf
+ 1);
5804 warning (_("Invalid remote reply: %s"), rs
->buf
);
5808 /* Acknowledge a pending stop reply that may have arrived in the
5810 if (notif_client_stop
.pending_event
!= NULL
)
5811 remote_notif_get_pending_events (¬if_client_stop
);
5813 /* If indeed we noticed a stop reply, we're done. */
5814 stop_reply
= queued_stop_reply (ptid
);
5815 if (stop_reply
!= NULL
)
5816 return process_stop_reply (stop_reply
, status
);
5818 /* Still no event. If we're just polling for an event, then
5819 return to the event loop. */
5820 if (options
& TARGET_WNOHANG
)
5822 status
->kind
= TARGET_WAITKIND_IGNORE
;
5823 return minus_one_ptid
;
5826 /* Otherwise do a blocking wait. */
5827 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5828 1 /* forever */, &is_notif
);
5832 /* Wait until the remote machine stops, then return, storing status in
5833 STATUS just as `wait' would. */
5836 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5838 struct remote_state
*rs
= get_remote_state ();
5839 ptid_t event_ptid
= null_ptid
;
5841 struct stop_reply
*stop_reply
;
5845 status
->kind
= TARGET_WAITKIND_IGNORE
;
5846 status
->value
.integer
= 0;
5848 stop_reply
= queued_stop_reply (ptid
);
5849 if (stop_reply
!= NULL
)
5850 return process_stop_reply (stop_reply
, status
);
5852 if (rs
->cached_wait_status
)
5853 /* Use the cached wait status, but only once. */
5854 rs
->cached_wait_status
= 0;
5860 if (!target_is_async_p ())
5862 ofunc
= signal (SIGINT
, remote_interrupt
);
5863 /* If the user hit C-c before this packet, or between packets,
5864 pretend that it was hit right here. */
5865 if (check_quit_flag ())
5868 remote_interrupt (SIGINT
);
5872 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5873 _never_ wait for ever -> test on target_is_async_p().
5874 However, before we do that we need to ensure that the caller
5875 knows how to take the target into/out of async mode. */
5876 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5877 wait_forever_enabled_p
, &is_notif
);
5879 /* GDB gets a notification. Return to core as this event is
5881 if (ret
!= -1 && is_notif
)
5882 return minus_one_ptid
;
5884 if (!target_is_async_p ())
5885 signal (SIGINT
, ofunc
);
5890 remote_stopped_by_watchpoint_p
= 0;
5892 /* We got something. */
5893 rs
->waiting_for_stop_reply
= 0;
5895 /* Assume that the target has acknowledged Ctrl-C unless we receive
5896 an 'F' or 'O' packet. */
5897 if (buf
[0] != 'F' && buf
[0] != 'O')
5898 rs
->ctrlc_pending_p
= 0;
5902 case 'E': /* Error of some sort. */
5903 /* We're out of sync with the target now. Did it continue or
5904 not? Not is more likely, so report a stop. */
5905 warning (_("Remote failure reply: %s"), buf
);
5906 status
->kind
= TARGET_WAITKIND_STOPPED
;
5907 status
->value
.sig
= GDB_SIGNAL_0
;
5909 case 'F': /* File-I/O request. */
5910 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5911 rs
->ctrlc_pending_p
= 0;
5913 case 'T': case 'S': case 'X': case 'W':
5915 struct stop_reply
*stop_reply
5916 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5919 event_ptid
= process_stop_reply (stop_reply
, status
);
5922 case 'O': /* Console output. */
5923 remote_console_output (buf
+ 1);
5925 /* The target didn't really stop; keep waiting. */
5926 rs
->waiting_for_stop_reply
= 1;
5930 if (last_sent_signal
!= GDB_SIGNAL_0
)
5932 /* Zero length reply means that we tried 'S' or 'C' and the
5933 remote system doesn't support it. */
5934 target_terminal_ours_for_output ();
5936 ("Can't send signals to this remote system. %s not sent.\n",
5937 gdb_signal_to_name (last_sent_signal
));
5938 last_sent_signal
= GDB_SIGNAL_0
;
5939 target_terminal_inferior ();
5941 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5942 putpkt ((char *) buf
);
5944 /* We just told the target to resume, so a stop reply is in
5946 rs
->waiting_for_stop_reply
= 1;
5949 /* else fallthrough */
5951 warning (_("Invalid remote reply: %s"), buf
);
5953 rs
->waiting_for_stop_reply
= 1;
5957 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5959 /* Nothing interesting happened. If we're doing a non-blocking
5960 poll, we're done. Otherwise, go back to waiting. */
5961 if (options
& TARGET_WNOHANG
)
5962 return minus_one_ptid
;
5966 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5967 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5969 if (!ptid_equal (event_ptid
, null_ptid
))
5970 record_currthread (event_ptid
);
5972 event_ptid
= inferior_ptid
;
5975 /* A process exit. Invalidate our notion of current thread. */
5976 record_currthread (minus_one_ptid
);
5981 /* Wait until the remote machine stops, then return, storing status in
5982 STATUS just as `wait' would. */
5985 remote_wait (struct target_ops
*ops
,
5986 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5991 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5993 event_ptid
= remote_wait_as (ptid
, status
, options
);
5995 if (target_can_async_p ())
5997 /* If there are are events left in the queue tell the event loop
5999 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6000 mark_async_event_handler (remote_async_inferior_event_token
);
6006 /* Fetch a single register using a 'p' packet. */
6009 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6011 struct remote_state
*rs
= get_remote_state ();
6013 char regp
[MAX_REGISTER_SIZE
];
6016 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6019 if (reg
->pnum
== -1)
6024 p
+= hexnumstr (p
, reg
->pnum
);
6027 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6031 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6035 case PACKET_UNKNOWN
:
6038 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6039 gdbarch_register_name (get_regcache_arch (regcache
),
6044 /* If this register is unfetchable, tell the regcache. */
6047 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6051 /* Otherwise, parse and supply the value. */
6057 error (_("fetch_register_using_p: early buf termination"));
6059 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6062 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6066 /* Fetch the registers included in the target's 'g' packet. */
6069 send_g_packet (void)
6071 struct remote_state
*rs
= get_remote_state ();
6074 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6075 remote_send (&rs
->buf
, &rs
->buf_size
);
6077 /* We can get out of synch in various cases. If the first character
6078 in the buffer is not a hex character, assume that has happened
6079 and try to fetch another packet to read. */
6080 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6081 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6082 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6083 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6086 fprintf_unfiltered (gdb_stdlog
,
6087 "Bad register packet; fetching a new packet\n");
6088 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6091 buf_len
= strlen (rs
->buf
);
6093 /* Sanity check the received packet. */
6094 if (buf_len
% 2 != 0)
6095 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6101 process_g_packet (struct regcache
*regcache
)
6103 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6104 struct remote_state
*rs
= get_remote_state ();
6105 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6110 buf_len
= strlen (rs
->buf
);
6112 /* Further sanity checks, with knowledge of the architecture. */
6113 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6114 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6116 /* Save the size of the packet sent to us by the target. It is used
6117 as a heuristic when determining the max size of packets that the
6118 target can safely receive. */
6119 if (rsa
->actual_register_packet_size
== 0)
6120 rsa
->actual_register_packet_size
= buf_len
;
6122 /* If this is smaller than we guessed the 'g' packet would be,
6123 update our records. A 'g' reply that doesn't include a register's
6124 value implies either that the register is not available, or that
6125 the 'p' packet must be used. */
6126 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6128 rsa
->sizeof_g_packet
= buf_len
/ 2;
6130 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6132 if (rsa
->regs
[i
].pnum
== -1)
6135 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6136 rsa
->regs
[i
].in_g_packet
= 0;
6138 rsa
->regs
[i
].in_g_packet
= 1;
6142 regs
= alloca (rsa
->sizeof_g_packet
);
6144 /* Unimplemented registers read as all bits zero. */
6145 memset (regs
, 0, rsa
->sizeof_g_packet
);
6147 /* Reply describes registers byte by byte, each byte encoded as two
6148 hex characters. Suck them all up, then supply them to the
6149 register cacheing/storage mechanism. */
6152 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6154 if (p
[0] == 0 || p
[1] == 0)
6155 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6156 internal_error (__FILE__
, __LINE__
,
6157 _("unexpected end of 'g' packet reply"));
6159 if (p
[0] == 'x' && p
[1] == 'x')
6160 regs
[i
] = 0; /* 'x' */
6162 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6166 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6168 struct packet_reg
*r
= &rsa
->regs
[i
];
6172 if (r
->offset
* 2 >= strlen (rs
->buf
))
6173 /* This shouldn't happen - we adjusted in_g_packet above. */
6174 internal_error (__FILE__
, __LINE__
,
6175 _("unexpected end of 'g' packet reply"));
6176 else if (rs
->buf
[r
->offset
* 2] == 'x')
6178 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6179 /* The register isn't available, mark it as such (at
6180 the same time setting the value to zero). */
6181 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6184 regcache_raw_supply (regcache
, r
->regnum
,
6191 fetch_registers_using_g (struct regcache
*regcache
)
6194 process_g_packet (regcache
);
6197 /* Make the remote selected traceframe match GDB's selected
6201 set_remote_traceframe (void)
6205 if (remote_traceframe_number
== get_traceframe_number ())
6208 /* Avoid recursion, remote_trace_find calls us again. */
6209 remote_traceframe_number
= get_traceframe_number ();
6211 newnum
= target_trace_find (tfind_number
,
6212 get_traceframe_number (), 0, 0, NULL
);
6214 /* Should not happen. If it does, all bets are off. */
6215 if (newnum
!= get_traceframe_number ())
6216 warning (_("could not set remote traceframe"));
6220 remote_fetch_registers (struct target_ops
*ops
,
6221 struct regcache
*regcache
, int regnum
)
6223 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6226 set_remote_traceframe ();
6227 set_general_thread (inferior_ptid
);
6231 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6233 gdb_assert (reg
!= NULL
);
6235 /* If this register might be in the 'g' packet, try that first -
6236 we are likely to read more than one register. If this is the
6237 first 'g' packet, we might be overly optimistic about its
6238 contents, so fall back to 'p'. */
6239 if (reg
->in_g_packet
)
6241 fetch_registers_using_g (regcache
);
6242 if (reg
->in_g_packet
)
6246 if (fetch_register_using_p (regcache
, reg
))
6249 /* This register is not available. */
6250 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6255 fetch_registers_using_g (regcache
);
6257 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6258 if (!rsa
->regs
[i
].in_g_packet
)
6259 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6261 /* This register is not available. */
6262 regcache_raw_supply (regcache
, i
, NULL
);
6266 /* Prepare to store registers. Since we may send them all (using a
6267 'G' request), we have to read out the ones we don't want to change
6271 remote_prepare_to_store (struct regcache
*regcache
)
6273 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6275 gdb_byte buf
[MAX_REGISTER_SIZE
];
6277 /* Make sure the entire registers array is valid. */
6278 switch (remote_protocol_packets
[PACKET_P
].support
)
6280 case PACKET_DISABLE
:
6281 case PACKET_SUPPORT_UNKNOWN
:
6282 /* Make sure all the necessary registers are cached. */
6283 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6284 if (rsa
->regs
[i
].in_g_packet
)
6285 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6292 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6293 packet was not recognized. */
6296 store_register_using_P (const struct regcache
*regcache
,
6297 struct packet_reg
*reg
)
6299 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6300 struct remote_state
*rs
= get_remote_state ();
6301 /* Try storing a single register. */
6302 char *buf
= rs
->buf
;
6303 gdb_byte regp
[MAX_REGISTER_SIZE
];
6306 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6309 if (reg
->pnum
== -1)
6312 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6313 p
= buf
+ strlen (buf
);
6314 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6315 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6317 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6319 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6324 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6325 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6326 case PACKET_UNKNOWN
:
6329 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6333 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6334 contents of the register cache buffer. FIXME: ignores errors. */
6337 store_registers_using_G (const struct regcache
*regcache
)
6339 struct remote_state
*rs
= get_remote_state ();
6340 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6344 /* Extract all the registers in the regcache copying them into a
6349 regs
= alloca (rsa
->sizeof_g_packet
);
6350 memset (regs
, 0, rsa
->sizeof_g_packet
);
6351 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6353 struct packet_reg
*r
= &rsa
->regs
[i
];
6356 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6360 /* Command describes registers byte by byte,
6361 each byte encoded as two hex characters. */
6364 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6366 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6368 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6369 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6370 error (_("Could not write registers; remote failure reply '%s'"),
6374 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6375 of the register cache buffer. FIXME: ignores errors. */
6378 remote_store_registers (struct target_ops
*ops
,
6379 struct regcache
*regcache
, int regnum
)
6381 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6384 set_remote_traceframe ();
6385 set_general_thread (inferior_ptid
);
6389 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6391 gdb_assert (reg
!= NULL
);
6393 /* Always prefer to store registers using the 'P' packet if
6394 possible; we often change only a small number of registers.
6395 Sometimes we change a larger number; we'd need help from a
6396 higher layer to know to use 'G'. */
6397 if (store_register_using_P (regcache
, reg
))
6400 /* For now, don't complain if we have no way to write the
6401 register. GDB loses track of unavailable registers too
6402 easily. Some day, this may be an error. We don't have
6403 any way to read the register, either... */
6404 if (!reg
->in_g_packet
)
6407 store_registers_using_G (regcache
);
6411 store_registers_using_G (regcache
);
6413 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6414 if (!rsa
->regs
[i
].in_g_packet
)
6415 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6416 /* See above for why we do not issue an error here. */
6421 /* Return the number of hex digits in num. */
6424 hexnumlen (ULONGEST num
)
6428 for (i
= 0; num
!= 0; i
++)
6434 /* Set BUF to the minimum number of hex digits representing NUM. */
6437 hexnumstr (char *buf
, ULONGEST num
)
6439 int len
= hexnumlen (num
);
6441 return hexnumnstr (buf
, num
, len
);
6445 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6448 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6454 for (i
= width
- 1; i
>= 0; i
--)
6456 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6463 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6466 remote_address_masked (CORE_ADDR addr
)
6468 unsigned int address_size
= remote_address_size
;
6470 /* If "remoteaddresssize" was not set, default to target address size. */
6472 address_size
= gdbarch_addr_bit (target_gdbarch ());
6474 if (address_size
> 0
6475 && address_size
< (sizeof (ULONGEST
) * 8))
6477 /* Only create a mask when that mask can safely be constructed
6478 in a ULONGEST variable. */
6481 mask
= (mask
<< address_size
) - 1;
6487 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6488 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6489 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6490 (which may be more than *OUT_LEN due to escape characters). The
6491 total number of bytes in the output buffer will be at most
6495 remote_escape_output (const gdb_byte
*buffer
, int len
,
6496 gdb_byte
*out_buf
, int *out_len
,
6499 int input_index
, output_index
;
6502 for (input_index
= 0; input_index
< len
; input_index
++)
6504 gdb_byte b
= buffer
[input_index
];
6506 if (b
== '$' || b
== '#' || b
== '}')
6508 /* These must be escaped. */
6509 if (output_index
+ 2 > out_maxlen
)
6511 out_buf
[output_index
++] = '}';
6512 out_buf
[output_index
++] = b
^ 0x20;
6516 if (output_index
+ 1 > out_maxlen
)
6518 out_buf
[output_index
++] = b
;
6522 *out_len
= input_index
;
6523 return output_index
;
6526 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6527 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6528 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6530 This function reverses remote_escape_output. It allows more
6531 escaped characters than that function does, in particular because
6532 '*' must be escaped to avoid the run-length encoding processing
6533 in reading packets. */
6536 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6537 gdb_byte
*out_buf
, int out_maxlen
)
6539 int input_index
, output_index
;
6544 for (input_index
= 0; input_index
< len
; input_index
++)
6546 gdb_byte b
= buffer
[input_index
];
6548 if (output_index
+ 1 > out_maxlen
)
6550 warning (_("Received too much data from remote target;"
6551 " ignoring overflow."));
6552 return output_index
;
6557 out_buf
[output_index
++] = b
^ 0x20;
6563 out_buf
[output_index
++] = b
;
6567 error (_("Unmatched escape character in target response."));
6569 return output_index
;
6572 /* Determine whether the remote target supports binary downloading.
6573 This is accomplished by sending a no-op memory write of zero length
6574 to the target at the specified address. It does not suffice to send
6575 the whole packet, since many stubs strip the eighth bit and
6576 subsequently compute a wrong checksum, which causes real havoc with
6579 NOTE: This can still lose if the serial line is not eight-bit
6580 clean. In cases like this, the user should clear "remote
6584 check_binary_download (CORE_ADDR addr
)
6586 struct remote_state
*rs
= get_remote_state ();
6588 switch (remote_protocol_packets
[PACKET_X
].support
)
6590 case PACKET_DISABLE
:
6594 case PACKET_SUPPORT_UNKNOWN
:
6600 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6602 p
+= hexnumstr (p
, (ULONGEST
) 0);
6606 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6607 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6609 if (rs
->buf
[0] == '\0')
6612 fprintf_unfiltered (gdb_stdlog
,
6613 "binary downloading NOT "
6614 "supported by target\n");
6615 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6620 fprintf_unfiltered (gdb_stdlog
,
6621 "binary downloading supported by target\n");
6622 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6629 /* Write memory data directly to the remote machine.
6630 This does not inform the data cache; the data cache uses this.
6631 HEADER is the starting part of the packet.
6632 MEMADDR is the address in the remote memory space.
6633 MYADDR is the address of the buffer in our space.
6634 LEN is the number of bytes.
6635 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6636 should send data as binary ('X'), or hex-encoded ('M').
6638 The function creates packet of the form
6639 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6641 where encoding of <DATA> is termined by PACKET_FORMAT.
6643 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6646 Returns the number of bytes transferred, or 0 (setting errno) for
6647 error. Only transfer a single packet. */
6650 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6651 const gdb_byte
*myaddr
, ssize_t len
,
6652 char packet_format
, int use_length
)
6654 struct remote_state
*rs
= get_remote_state ();
6664 if (packet_format
!= 'X' && packet_format
!= 'M')
6665 internal_error (__FILE__
, __LINE__
,
6666 _("remote_write_bytes_aux: bad packet format"));
6671 payload_size
= get_memory_write_packet_size ();
6673 /* The packet buffer will be large enough for the payload;
6674 get_memory_packet_size ensures this. */
6677 /* Compute the size of the actual payload by subtracting out the
6678 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6680 payload_size
-= strlen ("$,:#NN");
6682 /* The comma won't be used. */
6684 header_length
= strlen (header
);
6685 payload_size
-= header_length
;
6686 payload_size
-= hexnumlen (memaddr
);
6688 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6690 strcat (rs
->buf
, header
);
6691 p
= rs
->buf
+ strlen (header
);
6693 /* Compute a best guess of the number of bytes actually transfered. */
6694 if (packet_format
== 'X')
6696 /* Best guess at number of bytes that will fit. */
6697 todo
= min (len
, payload_size
);
6699 payload_size
-= hexnumlen (todo
);
6700 todo
= min (todo
, payload_size
);
6704 /* Num bytes that will fit. */
6705 todo
= min (len
, payload_size
/ 2);
6707 payload_size
-= hexnumlen (todo
);
6708 todo
= min (todo
, payload_size
/ 2);
6712 internal_error (__FILE__
, __LINE__
,
6713 _("minimum packet size too small to write data"));
6715 /* If we already need another packet, then try to align the end
6716 of this packet to a useful boundary. */
6717 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6718 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6720 /* Append "<memaddr>". */
6721 memaddr
= remote_address_masked (memaddr
);
6722 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6729 /* Append <len>. Retain the location/size of <len>. It may need to
6730 be adjusted once the packet body has been created. */
6732 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6740 /* Append the packet body. */
6741 if (packet_format
== 'X')
6743 /* Binary mode. Send target system values byte by byte, in
6744 increasing byte addresses. Only escape certain critical
6746 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6749 /* If not all TODO bytes fit, then we'll need another packet. Make
6750 a second try to keep the end of the packet aligned. Don't do
6751 this if the packet is tiny. */
6752 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6756 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6758 if (new_nr_bytes
!= nr_bytes
)
6759 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6764 p
+= payload_length
;
6765 if (use_length
&& nr_bytes
< todo
)
6767 /* Escape chars have filled up the buffer prematurely,
6768 and we have actually sent fewer bytes than planned.
6769 Fix-up the length field of the packet. Use the same
6770 number of characters as before. */
6771 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6772 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6777 /* Normal mode: Send target system values byte by byte, in
6778 increasing byte addresses. Each byte is encoded as a two hex
6780 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6784 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6785 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6787 if (rs
->buf
[0] == 'E')
6789 /* There is no correspondance between what the remote protocol
6790 uses for errors and errno codes. We would like a cleaner way
6791 of representing errors (big enough to include errno codes,
6792 bfd_error codes, and others). But for now just return EIO. */
6797 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6798 fewer bytes than we'd planned. */
6802 /* Write memory data directly to the remote machine.
6803 This does not inform the data cache; the data cache uses this.
6804 MEMADDR is the address in the remote memory space.
6805 MYADDR is the address of the buffer in our space.
6806 LEN is the number of bytes.
6808 Returns number of bytes transferred, or 0 (setting errno) for
6809 error. Only transfer a single packet. */
6812 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6814 char *packet_format
= 0;
6816 /* Check whether the target supports binary download. */
6817 check_binary_download (memaddr
);
6819 switch (remote_protocol_packets
[PACKET_X
].support
)
6822 packet_format
= "X";
6824 case PACKET_DISABLE
:
6825 packet_format
= "M";
6827 case PACKET_SUPPORT_UNKNOWN
:
6828 internal_error (__FILE__
, __LINE__
,
6829 _("remote_write_bytes: bad internal state"));
6831 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6834 return remote_write_bytes_aux (packet_format
,
6835 memaddr
, myaddr
, len
, packet_format
[0], 1);
6838 /* Read memory data directly from the remote machine.
6839 This does not use the data cache; the data cache uses this.
6840 MEMADDR is the address in the remote memory space.
6841 MYADDR is the address of the buffer in our space.
6842 LEN is the number of bytes.
6844 Returns number of bytes transferred, or 0 for error. */
6847 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6849 struct remote_state
*rs
= get_remote_state ();
6850 int max_buf_size
; /* Max size of packet output buffer. */
6858 max_buf_size
= get_memory_read_packet_size ();
6859 /* The packet buffer will be large enough for the payload;
6860 get_memory_packet_size ensures this. */
6862 /* Number if bytes that will fit. */
6863 todo
= min (len
, max_buf_size
/ 2);
6865 /* Construct "m"<memaddr>","<len>". */
6866 memaddr
= remote_address_masked (memaddr
);
6869 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6871 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6874 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6875 if (rs
->buf
[0] == 'E'
6876 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6877 && rs
->buf
[3] == '\0')
6879 /* There is no correspondance between what the remote protocol
6880 uses for errors and errno codes. We would like a cleaner way
6881 of representing errors (big enough to include errno codes,
6882 bfd_error codes, and others). But for now just return
6887 /* Reply describes memory byte by byte, each byte encoded as two hex
6890 i
= hex2bin (p
, myaddr
, todo
);
6891 /* Return what we have. Let higher layers handle partial reads. */
6896 /* Read or write LEN bytes from inferior memory at MEMADDR,
6897 transferring to or from debugger address BUFFER. Write to inferior
6898 if SHOULD_WRITE is nonzero. Returns length of data written or
6899 read; 0 for error. TARGET is unused. */
6902 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6903 int should_write
, struct mem_attrib
*attrib
,
6904 struct target_ops
*target
)
6908 set_remote_traceframe ();
6909 set_general_thread (inferior_ptid
);
6912 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6914 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6919 /* Sends a packet with content determined by the printf format string
6920 FORMAT and the remaining arguments, then gets the reply. Returns
6921 whether the packet was a success, a failure, or unknown. */
6923 static enum packet_result
6924 remote_send_printf (const char *format
, ...)
6926 struct remote_state
*rs
= get_remote_state ();
6927 int max_size
= get_remote_packet_size ();
6930 va_start (ap
, format
);
6933 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6934 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6936 if (putpkt (rs
->buf
) < 0)
6937 error (_("Communication problem with target."));
6940 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6942 return packet_check_result (rs
->buf
);
6946 restore_remote_timeout (void *p
)
6948 int value
= *(int *)p
;
6950 remote_timeout
= value
;
6953 /* Flash writing can take quite some time. We'll set
6954 effectively infinite timeout for flash operations.
6955 In future, we'll need to decide on a better approach. */
6956 static const int remote_flash_timeout
= 1000;
6959 remote_flash_erase (struct target_ops
*ops
,
6960 ULONGEST address
, LONGEST length
)
6962 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6963 int saved_remote_timeout
= remote_timeout
;
6964 enum packet_result ret
;
6965 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6966 &saved_remote_timeout
);
6968 remote_timeout
= remote_flash_timeout
;
6970 ret
= remote_send_printf ("vFlashErase:%s,%s",
6971 phex (address
, addr_size
),
6975 case PACKET_UNKNOWN
:
6976 error (_("Remote target does not support flash erase"));
6978 error (_("Error erasing flash with vFlashErase packet"));
6983 do_cleanups (back_to
);
6987 remote_flash_write (struct target_ops
*ops
,
6988 ULONGEST address
, LONGEST length
,
6989 const gdb_byte
*data
)
6991 int saved_remote_timeout
= remote_timeout
;
6993 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6994 &saved_remote_timeout
);
6996 remote_timeout
= remote_flash_timeout
;
6997 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6998 do_cleanups (back_to
);
7004 remote_flash_done (struct target_ops
*ops
)
7006 int saved_remote_timeout
= remote_timeout
;
7008 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7009 &saved_remote_timeout
);
7011 remote_timeout
= remote_flash_timeout
;
7012 ret
= remote_send_printf ("vFlashDone");
7013 do_cleanups (back_to
);
7017 case PACKET_UNKNOWN
:
7018 error (_("Remote target does not support vFlashDone"));
7020 error (_("Error finishing flash operation"));
7027 remote_files_info (struct target_ops
*ignore
)
7029 puts_filtered ("Debugging a target over a serial line.\n");
7032 /* Stuff for dealing with the packets which are part of this protocol.
7033 See comment at top of file for details. */
7035 /* Read a single character from the remote end. */
7038 readchar (int timeout
)
7042 ch
= serial_readchar (remote_desc
, timeout
);
7047 switch ((enum serial_rc
) ch
)
7050 remote_unpush_target ();
7051 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7054 remote_unpush_target ();
7055 throw_perror_with_name (TARGET_CLOSE_ERROR
,
7056 _("Remote communication error. "
7057 "Target disconnected."));
7059 case SERIAL_TIMEOUT
:
7065 /* Wrapper for serial_write that closes the target and throws if
7069 remote_serial_write (const char *str
, int len
)
7071 if (serial_write (remote_desc
, str
, len
))
7073 remote_unpush_target ();
7074 throw_perror_with_name (TARGET_CLOSE_ERROR
,
7075 _("Remote communication error. "
7076 "Target disconnected."));
7080 /* Send the command in *BUF to the remote machine, and read the reply
7081 into *BUF. Report an error if we get an error reply. Resize
7082 *BUF using xrealloc if necessary to hold the result, and update
7086 remote_send (char **buf
,
7090 getpkt (buf
, sizeof_buf
, 0);
7092 if ((*buf
)[0] == 'E')
7093 error (_("Remote failure reply: %s"), *buf
);
7096 /* Return a pointer to an xmalloc'ed string representing an escaped
7097 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7098 etc. The caller is responsible for releasing the returned
7102 escape_buffer (const char *buf
, int n
)
7104 struct cleanup
*old_chain
;
7105 struct ui_file
*stb
;
7108 stb
= mem_fileopen ();
7109 old_chain
= make_cleanup_ui_file_delete (stb
);
7111 fputstrn_unfiltered (buf
, n
, 0, stb
);
7112 str
= ui_file_xstrdup (stb
, NULL
);
7113 do_cleanups (old_chain
);
7117 /* Display a null-terminated packet on stdout, for debugging, using C
7121 print_packet (char *buf
)
7123 puts_filtered ("\"");
7124 fputstr_filtered (buf
, '"', gdb_stdout
);
7125 puts_filtered ("\"");
7131 return putpkt_binary (buf
, strlen (buf
));
7134 /* Send a packet to the remote machine, with error checking. The data
7135 of the packet is in BUF. The string in BUF can be at most
7136 get_remote_packet_size () - 5 to account for the $, # and checksum,
7137 and for a possible /0 if we are debugging (remote_debug) and want
7138 to print the sent packet as a string. */
7141 putpkt_binary (char *buf
, int cnt
)
7143 struct remote_state
*rs
= get_remote_state ();
7145 unsigned char csum
= 0;
7146 char *buf2
= alloca (cnt
+ 6);
7153 /* Catch cases like trying to read memory or listing threads while
7154 we're waiting for a stop reply. The remote server wouldn't be
7155 ready to handle this request, so we'd hang and timeout. We don't
7156 have to worry about this in synchronous mode, because in that
7157 case it's not possible to issue a command while the target is
7158 running. This is not a problem in non-stop mode, because in that
7159 case, the stub is always ready to process serial input. */
7160 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7161 error (_("Cannot execute this command while the target is running."));
7163 /* We're sending out a new packet. Make sure we don't look at a
7164 stale cached response. */
7165 rs
->cached_wait_status
= 0;
7167 /* Copy the packet into buffer BUF2, encapsulating it
7168 and giving it a checksum. */
7173 for (i
= 0; i
< cnt
; i
++)
7179 *p
++ = tohex ((csum
>> 4) & 0xf);
7180 *p
++ = tohex (csum
& 0xf);
7182 /* Send it over and over until we get a positive ack. */
7186 int started_error_output
= 0;
7190 struct cleanup
*old_chain
;
7194 str
= escape_buffer (buf2
, p
- buf2
);
7195 old_chain
= make_cleanup (xfree
, str
);
7196 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7197 gdb_flush (gdb_stdlog
);
7198 do_cleanups (old_chain
);
7200 remote_serial_write (buf2
, p
- buf2
);
7202 /* If this is a no acks version of the remote protocol, send the
7203 packet and move on. */
7207 /* Read until either a timeout occurs (-2) or '+' is read.
7208 Handle any notification that arrives in the mean time. */
7211 ch
= readchar (remote_timeout
);
7219 case SERIAL_TIMEOUT
:
7222 if (started_error_output
)
7224 putchar_unfiltered ('\n');
7225 started_error_output
= 0;
7234 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7238 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7240 case SERIAL_TIMEOUT
:
7244 break; /* Retransmit buffer. */
7248 fprintf_unfiltered (gdb_stdlog
,
7249 "Packet instead of Ack, ignoring it\n");
7250 /* It's probably an old response sent because an ACK
7251 was lost. Gobble up the packet and ack it so it
7252 doesn't get retransmitted when we resend this
7255 remote_serial_write ("+", 1);
7256 continue; /* Now, go look for +. */
7263 /* If we got a notification, handle it, and go back to looking
7265 /* We've found the start of a notification. Now
7266 collect the data. */
7267 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7272 struct cleanup
*old_chain
;
7275 str
= escape_buffer (rs
->buf
, val
);
7276 old_chain
= make_cleanup (xfree
, str
);
7277 fprintf_unfiltered (gdb_stdlog
,
7278 " Notification received: %s\n",
7280 do_cleanups (old_chain
);
7282 handle_notification (rs
->buf
);
7283 /* We're in sync now, rewait for the ack. */
7290 if (!started_error_output
)
7292 started_error_output
= 1;
7293 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7295 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7296 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7305 if (!started_error_output
)
7307 started_error_output
= 1;
7308 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7310 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7314 break; /* Here to retransmit. */
7318 /* This is wrong. If doing a long backtrace, the user should be
7319 able to get out next time we call QUIT, without anything as
7320 violent as interrupt_query. If we want to provide a way out of
7321 here without getting to the next QUIT, it should be based on
7322 hitting ^C twice as in remote_wait. */
7333 /* Come here after finding the start of a frame when we expected an
7334 ack. Do our best to discard the rest of this packet. */
7343 c
= readchar (remote_timeout
);
7346 case SERIAL_TIMEOUT
:
7347 /* Nothing we can do. */
7350 /* Discard the two bytes of checksum and stop. */
7351 c
= readchar (remote_timeout
);
7353 c
= readchar (remote_timeout
);
7356 case '*': /* Run length encoding. */
7357 /* Discard the repeat count. */
7358 c
= readchar (remote_timeout
);
7363 /* A regular character. */
7369 /* Come here after finding the start of the frame. Collect the rest
7370 into *BUF, verifying the checksum, length, and handling run-length
7371 compression. NUL terminate the buffer. If there is not enough room,
7372 expand *BUF using xrealloc.
7374 Returns -1 on error, number of characters in buffer (ignoring the
7375 trailing NULL) on success. (could be extended to return one of the
7376 SERIAL status indications). */
7379 read_frame (char **buf_p
,
7386 struct remote_state
*rs
= get_remote_state ();
7393 c
= readchar (remote_timeout
);
7396 case SERIAL_TIMEOUT
:
7398 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7402 fputs_filtered ("Saw new packet start in middle of old one\n",
7404 return -1; /* Start a new packet, count retries. */
7407 unsigned char pktcsum
;
7413 check_0
= readchar (remote_timeout
);
7415 check_1
= readchar (remote_timeout
);
7417 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7420 fputs_filtered ("Timeout in checksum, retrying\n",
7424 else if (check_0
< 0 || check_1
< 0)
7427 fputs_filtered ("Communication error in checksum\n",
7432 /* Don't recompute the checksum; with no ack packets we
7433 don't have any way to indicate a packet retransmission
7438 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7439 if (csum
== pktcsum
)
7444 struct cleanup
*old_chain
;
7447 str
= escape_buffer (buf
, bc
);
7448 old_chain
= make_cleanup (xfree
, str
);
7449 fprintf_unfiltered (gdb_stdlog
,
7450 "Bad checksum, sentsum=0x%x, "
7451 "csum=0x%x, buf=%s\n",
7452 pktcsum
, csum
, str
);
7453 do_cleanups (old_chain
);
7455 /* Number of characters in buffer ignoring trailing
7459 case '*': /* Run length encoding. */
7464 c
= readchar (remote_timeout
);
7466 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7468 /* The character before ``*'' is repeated. */
7470 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7472 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7474 /* Make some more room in the buffer. */
7475 *sizeof_buf
+= repeat
;
7476 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7480 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7486 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7490 if (bc
>= *sizeof_buf
- 1)
7492 /* Make some more room in the buffer. */
7494 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7505 /* Read a packet from the remote machine, with error checking, and
7506 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7507 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7508 rather than timing out; this is used (in synchronous mode) to wait
7509 for a target that is is executing user code to stop. */
7510 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7511 don't have to change all the calls to getpkt to deal with the
7512 return value, because at the moment I don't know what the right
7513 thing to do it for those. */
7521 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7525 /* Read a packet from the remote machine, with error checking, and
7526 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7527 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7528 rather than timing out; this is used (in synchronous mode) to wait
7529 for a target that is is executing user code to stop. If FOREVER ==
7530 0, this function is allowed to time out gracefully and return an
7531 indication of this to the caller. Otherwise return the number of
7532 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7533 enough reason to return to the caller. *IS_NOTIF is an output
7534 boolean that indicates whether *BUF holds a notification or not
7535 (a regular packet). */
7538 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7539 int expecting_notif
, int *is_notif
)
7541 struct remote_state
*rs
= get_remote_state ();
7547 /* We're reading a new response. Make sure we don't look at a
7548 previously cached response. */
7549 rs
->cached_wait_status
= 0;
7551 strcpy (*buf
, "timeout");
7554 timeout
= watchdog
> 0 ? watchdog
: -1;
7555 else if (expecting_notif
)
7556 timeout
= 0; /* There should already be a char in the buffer. If
7559 timeout
= remote_timeout
;
7563 /* Process any number of notifications, and then return when
7567 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7569 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7571 /* This can loop forever if the remote side sends us
7572 characters continuously, but if it pauses, we'll get
7573 SERIAL_TIMEOUT from readchar because of timeout. Then
7574 we'll count that as a retry.
7576 Note that even when forever is set, we will only wait
7577 forever prior to the start of a packet. After that, we
7578 expect characters to arrive at a brisk pace. They should
7579 show up within remote_timeout intervals. */
7581 c
= readchar (timeout
);
7582 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7584 if (c
== SERIAL_TIMEOUT
)
7586 if (expecting_notif
)
7587 return -1; /* Don't complain, it's normal to not get
7588 anything in this case. */
7590 if (forever
) /* Watchdog went off? Kill the target. */
7593 remote_unpush_target ();
7594 throw_error (TARGET_CLOSE_ERROR
,
7595 _("Watchdog timeout has expired. "
7596 "Target detached."));
7599 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7603 /* We've found the start of a packet or notification.
7604 Now collect the data. */
7605 val
= read_frame (buf
, sizeof_buf
);
7610 remote_serial_write ("-", 1);
7613 if (tries
> MAX_TRIES
)
7615 /* We have tried hard enough, and just can't receive the
7616 packet/notification. Give up. */
7617 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7619 /* Skip the ack char if we're in no-ack mode. */
7620 if (!rs
->noack_mode
)
7621 remote_serial_write ("+", 1);
7625 /* If we got an ordinary packet, return that to our caller. */
7630 struct cleanup
*old_chain
;
7633 str
= escape_buffer (*buf
, val
);
7634 old_chain
= make_cleanup (xfree
, str
);
7635 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7636 do_cleanups (old_chain
);
7639 /* Skip the ack char if we're in no-ack mode. */
7640 if (!rs
->noack_mode
)
7641 remote_serial_write ("+", 1);
7642 if (is_notif
!= NULL
)
7647 /* If we got a notification, handle it, and go back to looking
7651 gdb_assert (c
== '%');
7655 struct cleanup
*old_chain
;
7658 str
= escape_buffer (*buf
, val
);
7659 old_chain
= make_cleanup (xfree
, str
);
7660 fprintf_unfiltered (gdb_stdlog
,
7661 " Notification received: %s\n",
7663 do_cleanups (old_chain
);
7665 if (is_notif
!= NULL
)
7668 handle_notification (*buf
);
7670 /* Notifications require no acknowledgement. */
7672 if (expecting_notif
)
7679 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7681 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7685 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7688 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7693 /* A helper function that just calls putpkt; for type correctness. */
7696 putpkt_for_catch_errors (void *arg
)
7698 return putpkt (arg
);
7702 remote_kill (struct target_ops
*ops
)
7704 /* Use catch_errors so the user can quit from gdb even when we
7705 aren't on speaking terms with the remote system. */
7706 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7708 /* Don't wait for it to die. I'm not really sure it matters whether
7709 we do or not. For the existing stubs, kill is a noop. */
7710 target_mourn_inferior ();
7714 remote_vkill (int pid
, struct remote_state
*rs
)
7716 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7719 /* Tell the remote target to detach. */
7720 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7722 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7724 if (packet_ok (rs
->buf
,
7725 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7727 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7734 extended_remote_kill (struct target_ops
*ops
)
7737 int pid
= ptid_get_pid (inferior_ptid
);
7738 struct remote_state
*rs
= get_remote_state ();
7740 res
= remote_vkill (pid
, rs
);
7741 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7743 /* Don't try 'k' on a multi-process aware stub -- it has no way
7744 to specify the pid. */
7748 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7749 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7752 /* Don't wait for it to die. I'm not really sure it matters whether
7753 we do or not. For the existing stubs, kill is a noop. */
7759 error (_("Can't kill process"));
7761 target_mourn_inferior ();
7765 remote_mourn (struct target_ops
*ops
)
7767 remote_mourn_1 (ops
);
7770 /* Worker function for remote_mourn. */
7772 remote_mourn_1 (struct target_ops
*target
)
7774 unpush_target (target
);
7776 /* remote_close takes care of doing most of the clean up. */
7777 generic_mourn_inferior ();
7781 extended_remote_mourn_1 (struct target_ops
*target
)
7783 struct remote_state
*rs
= get_remote_state ();
7785 /* In case we got here due to an error, but we're going to stay
7787 rs
->waiting_for_stop_reply
= 0;
7789 /* If the current general thread belonged to the process we just
7790 detached from or has exited, the remote side current general
7791 thread becomes undefined. Considering a case like this:
7793 - We just got here due to a detach.
7794 - The process that we're detaching from happens to immediately
7795 report a global breakpoint being hit in non-stop mode, in the
7796 same thread we had selected before.
7797 - GDB attaches to this process again.
7798 - This event happens to be the next event we handle.
7800 GDB would consider that the current general thread didn't need to
7801 be set on the stub side (with Hg), since for all it knew,
7802 GENERAL_THREAD hadn't changed.
7804 Notice that although in all-stop mode, the remote server always
7805 sets the current thread to the thread reporting the stop event,
7806 that doesn't happen in non-stop mode; in non-stop, the stub *must
7807 not* change the current thread when reporting a breakpoint hit,
7808 due to the decoupling of event reporting and event handling.
7810 To keep things simple, we always invalidate our notion of the
7812 record_currthread (minus_one_ptid
);
7814 /* Unlike "target remote", we do not want to unpush the target; then
7815 the next time the user says "run", we won't be connected. */
7817 /* Call common code to mark the inferior as not running. */
7818 generic_mourn_inferior ();
7820 if (!have_inferiors ())
7822 if (!remote_multi_process_p (rs
))
7824 /* Check whether the target is running now - some remote stubs
7825 automatically restart after kill. */
7827 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7829 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7831 /* Assume that the target has been restarted. Set
7832 inferior_ptid so that bits of core GDB realizes
7833 there's something here, e.g., so that the user can
7834 say "kill" again. */
7835 inferior_ptid
= magic_null_ptid
;
7842 extended_remote_mourn (struct target_ops
*ops
)
7844 extended_remote_mourn_1 (ops
);
7848 extended_remote_supports_disable_randomization (void)
7850 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7855 extended_remote_disable_randomization (int val
)
7857 struct remote_state
*rs
= get_remote_state ();
7860 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7863 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7865 error (_("Target does not support QDisableRandomization."));
7866 if (strcmp (reply
, "OK") != 0)
7867 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7871 extended_remote_run (char *args
)
7873 struct remote_state
*rs
= get_remote_state ();
7876 /* If the user has disabled vRun support, or we have detected that
7877 support is not available, do not try it. */
7878 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7881 strcpy (rs
->buf
, "vRun;");
7882 len
= strlen (rs
->buf
);
7884 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7885 error (_("Remote file name too long for run packet"));
7886 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7888 gdb_assert (args
!= NULL
);
7891 struct cleanup
*back_to
;
7895 argv
= gdb_buildargv (args
);
7896 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7897 for (i
= 0; argv
[i
] != NULL
; i
++)
7899 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7900 error (_("Argument list too long for run packet"));
7901 rs
->buf
[len
++] = ';';
7902 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7904 do_cleanups (back_to
);
7907 rs
->buf
[len
++] = '\0';
7910 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7912 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7914 /* We have a wait response. All is well. */
7917 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7918 /* It wasn't disabled before, but it is now. */
7922 if (remote_exec_file
[0] == '\0')
7923 error (_("Running the default executable on the remote target failed; "
7924 "try \"set remote exec-file\"?"));
7926 error (_("Running \"%s\" on the remote target failed"),
7931 /* In the extended protocol we want to be able to do things like
7932 "run" and have them basically work as expected. So we need
7933 a special create_inferior function. We support changing the
7934 executable file and the command line arguments, but not the
7938 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7939 char **env
, int from_tty
)
7943 struct remote_state
*rs
= get_remote_state ();
7945 /* If running asynchronously, register the target file descriptor
7946 with the event loop. */
7947 if (target_can_async_p ())
7948 target_async (inferior_event_handler
, 0);
7950 /* Disable address space randomization if requested (and supported). */
7951 if (extended_remote_supports_disable_randomization ())
7952 extended_remote_disable_randomization (disable_randomization
);
7954 /* Now restart the remote server. */
7955 run_worked
= extended_remote_run (args
) != -1;
7958 /* vRun was not supported. Fail if we need it to do what the
7960 if (remote_exec_file
[0])
7961 error (_("Remote target does not support \"set remote exec-file\""));
7963 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7965 /* Fall back to "R". */
7966 extended_remote_restart ();
7969 if (!have_inferiors ())
7971 /* Clean up from the last time we ran, before we mark the target
7972 running again. This will mark breakpoints uninserted, and
7973 get_offsets may insert breakpoints. */
7974 init_thread_list ();
7975 init_wait_for_inferior ();
7978 /* vRun's success return is a stop reply. */
7979 stop_reply
= run_worked
? rs
->buf
: NULL
;
7980 add_current_inferior_and_thread (stop_reply
);
7982 /* Get updated offsets, if the stub uses qOffsets. */
7987 extended_remote_create_inferior (struct target_ops
*ops
,
7988 char *exec_file
, char *args
,
7989 char **env
, int from_tty
)
7991 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7995 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7996 the list of conditions (in agent expression bytecode format), if any, the
7997 target needs to evaluate. The output is placed into the packet buffer
7998 started from BUF and ended at BUF_END. */
8001 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8002 struct bp_target_info
*bp_tgt
, char *buf
,
8005 struct agent_expr
*aexpr
= NULL
;
8008 char *buf_start
= buf
;
8010 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8013 buf
+= strlen (buf
);
8014 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8017 /* Send conditions to the target and free the vector. */
8019 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8022 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8023 buf
+= strlen (buf
);
8024 for (i
= 0; i
< aexpr
->len
; ++i
)
8025 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8029 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8034 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8035 struct bp_target_info
*bp_tgt
, char *buf
)
8037 struct agent_expr
*aexpr
= NULL
;
8040 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8043 buf
+= strlen (buf
);
8045 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8046 buf
+= strlen (buf
);
8048 /* Concatenate all the agent expressions that are commands into the
8051 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8054 sprintf (buf
, "X%x,", aexpr
->len
);
8055 buf
+= strlen (buf
);
8056 for (i
= 0; i
< aexpr
->len
; ++i
)
8057 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8061 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8064 /* Insert a breakpoint. On targets that have software breakpoint
8065 support, we ask the remote target to do the work; on targets
8066 which don't, we insert a traditional memory breakpoint. */
8069 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8070 struct bp_target_info
*bp_tgt
)
8072 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8073 If it succeeds, then set the support to PACKET_ENABLE. If it
8074 fails, and the user has explicitly requested the Z support then
8075 report an error, otherwise, mark it disabled and go on. */
8077 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8079 CORE_ADDR addr
= bp_tgt
->placed_address
;
8080 struct remote_state
*rs
;
8083 struct condition_list
*cond
= NULL
;
8085 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8087 rs
= get_remote_state ();
8089 endbuf
= rs
->buf
+ get_remote_packet_size ();
8094 addr
= (ULONGEST
) remote_address_masked (addr
);
8095 p
+= hexnumstr (p
, addr
);
8096 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8098 if (remote_supports_cond_breakpoints ())
8099 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8101 if (remote_can_run_breakpoint_commands ())
8102 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8105 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8107 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8112 bp_tgt
->placed_address
= addr
;
8113 bp_tgt
->placed_size
= bpsize
;
8115 case PACKET_UNKNOWN
:
8120 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8124 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8125 struct bp_target_info
*bp_tgt
)
8127 CORE_ADDR addr
= bp_tgt
->placed_address
;
8128 struct remote_state
*rs
= get_remote_state ();
8130 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8133 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8139 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8140 p
+= hexnumstr (p
, addr
);
8141 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8144 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8146 return (rs
->buf
[0] == 'E');
8149 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8153 watchpoint_to_Z_packet (int type
)
8158 return Z_PACKET_WRITE_WP
;
8161 return Z_PACKET_READ_WP
;
8164 return Z_PACKET_ACCESS_WP
;
8167 internal_error (__FILE__
, __LINE__
,
8168 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8173 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8174 struct expression
*cond
)
8176 struct remote_state
*rs
= get_remote_state ();
8177 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8179 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8181 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8184 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8185 p
= strchr (rs
->buf
, '\0');
8186 addr
= remote_address_masked (addr
);
8187 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8188 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8191 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8193 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8197 case PACKET_UNKNOWN
:
8202 internal_error (__FILE__
, __LINE__
,
8203 _("remote_insert_watchpoint: reached end of function"));
8207 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8208 CORE_ADDR start
, int length
)
8210 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8212 return diff
< length
;
8217 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8218 struct expression
*cond
)
8220 struct remote_state
*rs
= get_remote_state ();
8221 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8223 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8225 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8228 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8229 p
= strchr (rs
->buf
, '\0');
8230 addr
= remote_address_masked (addr
);
8231 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8232 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8234 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8236 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8239 case PACKET_UNKNOWN
:
8244 internal_error (__FILE__
, __LINE__
,
8245 _("remote_remove_watchpoint: reached end of function"));
8249 int remote_hw_watchpoint_limit
= -1;
8250 int remote_hw_watchpoint_length_limit
= -1;
8251 int remote_hw_breakpoint_limit
= -1;
8254 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8256 if (remote_hw_watchpoint_length_limit
== 0)
8258 else if (remote_hw_watchpoint_length_limit
< 0)
8260 else if (len
<= remote_hw_watchpoint_length_limit
)
8267 remote_check_watch_resources (int type
, int cnt
, int ot
)
8269 if (type
== bp_hardware_breakpoint
)
8271 if (remote_hw_breakpoint_limit
== 0)
8273 else if (remote_hw_breakpoint_limit
< 0)
8275 else if (cnt
<= remote_hw_breakpoint_limit
)
8280 if (remote_hw_watchpoint_limit
== 0)
8282 else if (remote_hw_watchpoint_limit
< 0)
8286 else if (cnt
<= remote_hw_watchpoint_limit
)
8293 remote_stopped_by_watchpoint (void)
8295 return remote_stopped_by_watchpoint_p
;
8299 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8303 if (remote_stopped_by_watchpoint ())
8305 *addr_p
= remote_watch_data_address
;
8314 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8315 struct bp_target_info
*bp_tgt
)
8318 struct remote_state
*rs
;
8322 /* The length field should be set to the size of a breakpoint
8323 instruction, even though we aren't inserting one ourselves. */
8325 gdbarch_remote_breakpoint_from_pc
8326 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8328 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8331 rs
= get_remote_state ();
8333 endbuf
= rs
->buf
+ get_remote_packet_size ();
8339 addr
= remote_address_masked (bp_tgt
->placed_address
);
8340 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8341 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8343 if (remote_supports_cond_breakpoints ())
8344 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8346 if (remote_can_run_breakpoint_commands ())
8347 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8350 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8352 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8355 if (rs
->buf
[1] == '.')
8357 message
= strchr (rs
->buf
+ 2, '.');
8359 error (_("Remote failure reply: %s"), message
+ 1);
8362 case PACKET_UNKNOWN
:
8367 internal_error (__FILE__
, __LINE__
,
8368 _("remote_insert_hw_breakpoint: reached end of function"));
8373 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8374 struct bp_target_info
*bp_tgt
)
8377 struct remote_state
*rs
= get_remote_state ();
8379 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8381 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8388 addr
= remote_address_masked (bp_tgt
->placed_address
);
8389 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8390 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8393 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8395 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8398 case PACKET_UNKNOWN
:
8403 internal_error (__FILE__
, __LINE__
,
8404 _("remote_remove_hw_breakpoint: reached end of function"));
8407 /* Table used by the crc32 function to calcuate the checksum. */
8409 static unsigned long crc32_table
[256] =
8412 static unsigned long
8413 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8415 if (!crc32_table
[1])
8417 /* Initialize the CRC table and the decoding table. */
8421 for (i
= 0; i
< 256; i
++)
8423 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8424 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8431 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8437 /* Verify memory using the "qCRC:" request. */
8440 remote_verify_memory (struct target_ops
*ops
,
8441 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8443 struct remote_state
*rs
= get_remote_state ();
8444 unsigned long host_crc
, target_crc
;
8447 /* FIXME: assumes lma can fit into long. */
8448 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8449 (long) lma
, (long) size
);
8452 /* Be clever; compute the host_crc before waiting for target
8454 host_crc
= crc32 (data
, size
, 0xffffffff);
8456 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8457 if (rs
->buf
[0] == 'E')
8460 if (rs
->buf
[0] != 'C')
8461 error (_("remote target does not support this operation"));
8463 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8464 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8466 return (host_crc
== target_crc
);
8469 /* compare-sections command
8471 With no arguments, compares each loadable section in the exec bfd
8472 with the same memory range on the target, and reports mismatches.
8473 Useful for verifying the image on the target against the exec file. */
8476 compare_sections_command (char *args
, int from_tty
)
8479 struct cleanup
*old_chain
;
8481 const char *sectname
;
8489 error (_("command cannot be used without an exec file"));
8491 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8493 if (!(s
->flags
& SEC_LOAD
))
8494 continue; /* Skip non-loadable section. */
8496 size
= bfd_get_section_size (s
);
8498 continue; /* Skip zero-length section. */
8500 sectname
= bfd_get_section_name (exec_bfd
, s
);
8501 if (args
&& strcmp (args
, sectname
) != 0)
8502 continue; /* Not the section selected by user. */
8504 matched
= 1; /* Do this section. */
8507 sectdata
= xmalloc (size
);
8508 old_chain
= make_cleanup (xfree
, sectdata
);
8509 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8511 res
= target_verify_memory (sectdata
, lma
, size
);
8514 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8515 paddress (target_gdbarch (), lma
),
8516 paddress (target_gdbarch (), lma
+ size
));
8518 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8519 paddress (target_gdbarch (), lma
),
8520 paddress (target_gdbarch (), lma
+ size
));
8522 printf_filtered ("matched.\n");
8525 printf_filtered ("MIS-MATCHED!\n");
8529 do_cleanups (old_chain
);
8532 warning (_("One or more sections of the remote executable does not match\n\
8533 the loaded file\n"));
8534 if (args
&& !matched
)
8535 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8538 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8539 into remote target. The number of bytes written to the remote
8540 target is returned, or -1 for error. */
8543 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8544 const char *annex
, const gdb_byte
*writebuf
,
8545 ULONGEST offset
, LONGEST len
,
8546 struct packet_config
*packet
)
8550 struct remote_state
*rs
= get_remote_state ();
8551 int max_size
= get_memory_write_packet_size ();
8553 if (packet
->support
== PACKET_DISABLE
)
8556 /* Insert header. */
8557 i
= snprintf (rs
->buf
, max_size
,
8558 "qXfer:%s:write:%s:%s:",
8559 object_name
, annex
? annex
: "",
8560 phex_nz (offset
, sizeof offset
));
8561 max_size
-= (i
+ 1);
8563 /* Escape as much data as fits into rs->buf. */
8564 buf_len
= remote_escape_output
8565 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8567 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8568 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8569 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8572 unpack_varlen_hex (rs
->buf
, &n
);
8576 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8577 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8578 number of bytes read is returned, or 0 for EOF, or -1 for error.
8579 The number of bytes read may be less than LEN without indicating an
8580 EOF. PACKET is checked and updated to indicate whether the remote
8581 target supports this object. */
8584 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8586 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8587 struct packet_config
*packet
)
8589 static char *finished_object
;
8590 static char *finished_annex
;
8591 static ULONGEST finished_offset
;
8593 struct remote_state
*rs
= get_remote_state ();
8594 LONGEST i
, n
, packet_len
;
8596 if (packet
->support
== PACKET_DISABLE
)
8599 /* Check whether we've cached an end-of-object packet that matches
8601 if (finished_object
)
8603 if (strcmp (object_name
, finished_object
) == 0
8604 && strcmp (annex
? annex
: "", finished_annex
) == 0
8605 && offset
== finished_offset
)
8608 /* Otherwise, we're now reading something different. Discard
8610 xfree (finished_object
);
8611 xfree (finished_annex
);
8612 finished_object
= NULL
;
8613 finished_annex
= NULL
;
8616 /* Request only enough to fit in a single packet. The actual data
8617 may not, since we don't know how much of it will need to be escaped;
8618 the target is free to respond with slightly less data. We subtract
8619 five to account for the response type and the protocol frame. */
8620 n
= min (get_remote_packet_size () - 5, len
);
8621 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8622 object_name
, annex
? annex
: "",
8623 phex_nz (offset
, sizeof offset
),
8624 phex_nz (n
, sizeof n
));
8625 i
= putpkt (rs
->buf
);
8630 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8631 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8634 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8635 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8637 /* 'm' means there is (or at least might be) more data after this
8638 batch. That does not make sense unless there's at least one byte
8639 of data in this reply. */
8640 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8641 error (_("Remote qXfer reply contained no data."));
8643 /* Got some data. */
8644 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8646 /* 'l' is an EOF marker, possibly including a final block of data,
8647 or possibly empty. If we have the final block of a non-empty
8648 object, record this fact to bypass a subsequent partial read. */
8649 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8651 finished_object
= xstrdup (object_name
);
8652 finished_annex
= xstrdup (annex
? annex
: "");
8653 finished_offset
= offset
+ i
;
8660 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8661 const char *annex
, gdb_byte
*readbuf
,
8662 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8664 struct remote_state
*rs
;
8669 set_remote_traceframe ();
8670 set_general_thread (inferior_ptid
);
8672 rs
= get_remote_state ();
8674 /* Handle memory using the standard memory routines. */
8675 if (object
== TARGET_OBJECT_MEMORY
)
8681 /* If the remote target is connected but not running, we should
8682 pass this request down to a lower stratum (e.g. the executable
8684 if (!target_has_execution
)
8687 if (writebuf
!= NULL
)
8688 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8690 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8694 else if (xfered
== 0 && errno
== 0)
8700 /* Handle SPU memory using qxfer packets. */
8701 if (object
== TARGET_OBJECT_SPU
)
8704 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8705 &remote_protocol_packets
8706 [PACKET_qXfer_spu_read
]);
8708 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8709 &remote_protocol_packets
8710 [PACKET_qXfer_spu_write
]);
8713 /* Handle extra signal info using qxfer packets. */
8714 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8717 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8718 &remote_protocol_packets
8719 [PACKET_qXfer_siginfo_read
]);
8721 return remote_write_qxfer (ops
, "siginfo", annex
,
8722 writebuf
, offset
, len
,
8723 &remote_protocol_packets
8724 [PACKET_qXfer_siginfo_write
]);
8727 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8730 return remote_read_qxfer (ops
, "statictrace", annex
,
8731 readbuf
, offset
, len
,
8732 &remote_protocol_packets
8733 [PACKET_qXfer_statictrace_read
]);
8738 /* Only handle flash writes. */
8739 if (writebuf
!= NULL
)
8745 case TARGET_OBJECT_FLASH
:
8746 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8750 else if (xfered
== 0 && errno
== 0)
8760 /* Map pre-existing objects onto letters. DO NOT do this for new
8761 objects!!! Instead specify new query packets. */
8764 case TARGET_OBJECT_AVR
:
8768 case TARGET_OBJECT_AUXV
:
8769 gdb_assert (annex
== NULL
);
8770 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8771 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8773 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8774 return remote_read_qxfer
8775 (ops
, "features", annex
, readbuf
, offset
, len
,
8776 &remote_protocol_packets
[PACKET_qXfer_features
]);
8778 case TARGET_OBJECT_LIBRARIES
:
8779 return remote_read_qxfer
8780 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8781 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8783 case TARGET_OBJECT_LIBRARIES_SVR4
:
8784 return remote_read_qxfer
8785 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8786 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8788 case TARGET_OBJECT_MEMORY_MAP
:
8789 gdb_assert (annex
== NULL
);
8790 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8791 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8793 case TARGET_OBJECT_OSDATA
:
8794 /* Should only get here if we're connected. */
8795 gdb_assert (remote_desc
);
8796 return remote_read_qxfer
8797 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8798 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8800 case TARGET_OBJECT_THREADS
:
8801 gdb_assert (annex
== NULL
);
8802 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8803 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8805 case TARGET_OBJECT_TRACEFRAME_INFO
:
8806 gdb_assert (annex
== NULL
);
8807 return remote_read_qxfer
8808 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8809 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8811 case TARGET_OBJECT_FDPIC
:
8812 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8813 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8815 case TARGET_OBJECT_OPENVMS_UIB
:
8816 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8817 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8819 case TARGET_OBJECT_BTRACE
:
8820 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8821 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8827 /* Note: a zero OFFSET and LEN can be used to query the minimum
8829 if (offset
== 0 && len
== 0)
8830 return (get_remote_packet_size ());
8831 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8832 large enough let the caller deal with it. */
8833 if (len
< get_remote_packet_size ())
8835 len
= get_remote_packet_size ();
8837 /* Except for querying the minimum buffer size, target must be open. */
8839 error (_("remote query is only available after target open"));
8841 gdb_assert (annex
!= NULL
);
8842 gdb_assert (readbuf
!= NULL
);
8848 /* We used one buffer char for the remote protocol q command and
8849 another for the query type. As the remote protocol encapsulation
8850 uses 4 chars plus one extra in case we are debugging
8851 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8854 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8856 /* Bad caller may have sent forbidden characters. */
8857 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8862 gdb_assert (annex
[i
] == '\0');
8864 i
= putpkt (rs
->buf
);
8868 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8869 strcpy ((char *) readbuf
, rs
->buf
);
8871 return strlen ((char *) readbuf
);
8875 remote_search_memory (struct target_ops
* ops
,
8876 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8877 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8878 CORE_ADDR
*found_addrp
)
8880 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8881 struct remote_state
*rs
= get_remote_state ();
8882 int max_size
= get_memory_write_packet_size ();
8883 struct packet_config
*packet
=
8884 &remote_protocol_packets
[PACKET_qSearch_memory
];
8885 /* Number of packet bytes used to encode the pattern;
8886 this could be more than PATTERN_LEN due to escape characters. */
8887 int escaped_pattern_len
;
8888 /* Amount of pattern that was encodable in the packet. */
8889 int used_pattern_len
;
8892 ULONGEST found_addr
;
8894 /* Don't go to the target if we don't have to.
8895 This is done before checking packet->support to avoid the possibility that
8896 a success for this edge case means the facility works in general. */
8897 if (pattern_len
> search_space_len
)
8899 if (pattern_len
== 0)
8901 *found_addrp
= start_addr
;
8905 /* If we already know the packet isn't supported, fall back to the simple
8906 way of searching memory. */
8908 if (packet
->support
== PACKET_DISABLE
)
8910 /* Target doesn't provided special support, fall back and use the
8911 standard support (copy memory and do the search here). */
8912 return simple_search_memory (ops
, start_addr
, search_space_len
,
8913 pattern
, pattern_len
, found_addrp
);
8916 /* Insert header. */
8917 i
= snprintf (rs
->buf
, max_size
,
8918 "qSearch:memory:%s;%s;",
8919 phex_nz (start_addr
, addr_size
),
8920 phex_nz (search_space_len
, sizeof (search_space_len
)));
8921 max_size
-= (i
+ 1);
8923 /* Escape as much data as fits into rs->buf. */
8924 escaped_pattern_len
=
8925 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8926 &used_pattern_len
, max_size
);
8928 /* Bail if the pattern is too large. */
8929 if (used_pattern_len
!= pattern_len
)
8930 error (_("Pattern is too large to transmit to remote target."));
8932 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8933 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8934 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8936 /* The request may not have worked because the command is not
8937 supported. If so, fall back to the simple way. */
8938 if (packet
->support
== PACKET_DISABLE
)
8940 return simple_search_memory (ops
, start_addr
, search_space_len
,
8941 pattern
, pattern_len
, found_addrp
);
8946 if (rs
->buf
[0] == '0')
8948 else if (rs
->buf
[0] == '1')
8951 if (rs
->buf
[1] != ',')
8952 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8953 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8954 *found_addrp
= found_addr
;
8957 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8963 remote_rcmd (char *command
,
8964 struct ui_file
*outbuf
)
8966 struct remote_state
*rs
= get_remote_state ();
8970 error (_("remote rcmd is only available after target open"));
8972 /* Send a NULL command across as an empty command. */
8973 if (command
== NULL
)
8976 /* The query prefix. */
8977 strcpy (rs
->buf
, "qRcmd,");
8978 p
= strchr (rs
->buf
, '\0');
8980 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8981 > get_remote_packet_size ())
8982 error (_("\"monitor\" command ``%s'' is too long."), command
);
8984 /* Encode the actual command. */
8985 bin2hex ((gdb_byte
*) command
, p
, 0);
8987 if (putpkt (rs
->buf
) < 0)
8988 error (_("Communication problem with target."));
8990 /* get/display the response */
8995 /* XXX - see also remote_get_noisy_reply(). */
8996 QUIT
; /* Allow user to bail out with ^C. */
8998 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9000 /* Timeout. Continue to (try to) read responses.
9001 This is better than stopping with an error, assuming the stub
9002 is still executing the (long) monitor command.
9003 If needed, the user can interrupt gdb using C-c, obtaining
9004 an effect similar to stop on timeout. */
9009 error (_("Target does not support this command."));
9010 if (buf
[0] == 'O' && buf
[1] != 'K')
9012 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9015 if (strcmp (buf
, "OK") == 0)
9017 if (strlen (buf
) == 3 && buf
[0] == 'E'
9018 && isdigit (buf
[1]) && isdigit (buf
[2]))
9020 error (_("Protocol error with Rcmd"));
9022 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9024 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9026 fputc_unfiltered (c
, outbuf
);
9032 static VEC(mem_region_s
) *
9033 remote_memory_map (struct target_ops
*ops
)
9035 VEC(mem_region_s
) *result
= NULL
;
9036 char *text
= target_read_stralloc (¤t_target
,
9037 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9041 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9043 result
= parse_memory_map (text
);
9044 do_cleanups (back_to
);
9051 packet_command (char *args
, int from_tty
)
9053 struct remote_state
*rs
= get_remote_state ();
9056 error (_("command can only be used with remote target"));
9059 error (_("remote-packet command requires packet text as argument"));
9061 puts_filtered ("sending: ");
9062 print_packet (args
);
9063 puts_filtered ("\n");
9066 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9067 puts_filtered ("received: ");
9068 print_packet (rs
->buf
);
9069 puts_filtered ("\n");
9073 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9075 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9077 static void threadset_test_cmd (char *cmd
, int tty
);
9079 static void threadalive_test (char *cmd
, int tty
);
9081 static void threadlist_test_cmd (char *cmd
, int tty
);
9083 int get_and_display_threadinfo (threadref
*ref
);
9085 static void threadinfo_test_cmd (char *cmd
, int tty
);
9087 static int thread_display_step (threadref
*ref
, void *context
);
9089 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9091 static void init_remote_threadtests (void);
9093 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9096 threadset_test_cmd (char *cmd
, int tty
)
9098 int sample_thread
= SAMPLE_THREAD
;
9100 printf_filtered (_("Remote threadset test\n"));
9101 set_general_thread (sample_thread
);
9106 threadalive_test (char *cmd
, int tty
)
9108 int sample_thread
= SAMPLE_THREAD
;
9109 int pid
= ptid_get_pid (inferior_ptid
);
9110 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9112 if (remote_thread_alive (ptid
))
9113 printf_filtered ("PASS: Thread alive test\n");
9115 printf_filtered ("FAIL: Thread alive test\n");
9118 void output_threadid (char *title
, threadref
*ref
);
9121 output_threadid (char *title
, threadref
*ref
)
9125 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9127 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9131 threadlist_test_cmd (char *cmd
, int tty
)
9134 threadref nextthread
;
9135 int done
, result_count
;
9136 threadref threadlist
[3];
9138 printf_filtered ("Remote Threadlist test\n");
9139 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9140 &result_count
, &threadlist
[0]))
9141 printf_filtered ("FAIL: threadlist test\n");
9144 threadref
*scan
= threadlist
;
9145 threadref
*limit
= scan
+ result_count
;
9147 while (scan
< limit
)
9148 output_threadid (" thread ", scan
++);
9153 display_thread_info (struct gdb_ext_thread_info
*info
)
9155 output_threadid ("Threadid: ", &info
->threadid
);
9156 printf_filtered ("Name: %s\n ", info
->shortname
);
9157 printf_filtered ("State: %s\n", info
->display
);
9158 printf_filtered ("other: %s\n\n", info
->more_display
);
9162 get_and_display_threadinfo (threadref
*ref
)
9166 struct gdb_ext_thread_info threadinfo
;
9168 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9169 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9170 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9171 display_thread_info (&threadinfo
);
9176 threadinfo_test_cmd (char *cmd
, int tty
)
9178 int athread
= SAMPLE_THREAD
;
9182 int_to_threadref (&thread
, athread
);
9183 printf_filtered ("Remote Threadinfo test\n");
9184 if (!get_and_display_threadinfo (&thread
))
9185 printf_filtered ("FAIL cannot get thread info\n");
9189 thread_display_step (threadref
*ref
, void *context
)
9191 /* output_threadid(" threadstep ",ref); *//* simple test */
9192 return get_and_display_threadinfo (ref
);
9196 threadlist_update_test_cmd (char *cmd
, int tty
)
9198 printf_filtered ("Remote Threadlist update test\n");
9199 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9203 init_remote_threadtests (void)
9205 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9206 _("Fetch and print the remote list of "
9207 "thread identifiers, one pkt only"));
9208 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9209 _("Fetch and display info about one thread"));
9210 add_com ("tset", class_obscure
, threadset_test_cmd
,
9211 _("Test setting to a different thread"));
9212 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9213 _("Iterate through updating all remote thread info"));
9214 add_com ("talive", class_obscure
, threadalive_test
,
9215 _(" Remote thread alive test "));
9220 /* Convert a thread ID to a string. Returns the string in a static
9224 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9226 static char buf
[64];
9227 struct remote_state
*rs
= get_remote_state ();
9229 if (ptid_equal (ptid
, null_ptid
))
9230 return normal_pid_to_str (ptid
);
9231 else if (ptid_is_pid (ptid
))
9233 /* Printing an inferior target id. */
9235 /* When multi-process extensions are off, there's no way in the
9236 remote protocol to know the remote process id, if there's any
9237 at all. There's one exception --- when we're connected with
9238 target extended-remote, and we manually attached to a process
9239 with "attach PID". We don't record anywhere a flag that
9240 allows us to distinguish that case from the case of
9241 connecting with extended-remote and the stub already being
9242 attached to a process, and reporting yes to qAttached, hence
9243 no smart special casing here. */
9244 if (!remote_multi_process_p (rs
))
9246 xsnprintf (buf
, sizeof buf
, "Remote target");
9250 return normal_pid_to_str (ptid
);
9254 if (ptid_equal (magic_null_ptid
, ptid
))
9255 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9256 else if (rs
->extended
&& remote_multi_process_p (rs
))
9257 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9258 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9260 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9261 ptid_get_tid (ptid
));
9266 /* Get the address of the thread local variable in OBJFILE which is
9267 stored at OFFSET within the thread local storage for thread PTID. */
9270 remote_get_thread_local_address (struct target_ops
*ops
,
9271 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9273 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9275 struct remote_state
*rs
= get_remote_state ();
9277 char *endp
= rs
->buf
+ get_remote_packet_size ();
9278 enum packet_result result
;
9280 strcpy (p
, "qGetTLSAddr:");
9282 p
= write_ptid (p
, endp
, ptid
);
9284 p
+= hexnumstr (p
, offset
);
9286 p
+= hexnumstr (p
, lm
);
9290 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9291 result
= packet_ok (rs
->buf
,
9292 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9293 if (result
== PACKET_OK
)
9297 unpack_varlen_hex (rs
->buf
, &result
);
9300 else if (result
== PACKET_UNKNOWN
)
9301 throw_error (TLS_GENERIC_ERROR
,
9302 _("Remote target doesn't support qGetTLSAddr packet"));
9304 throw_error (TLS_GENERIC_ERROR
,
9305 _("Remote target failed to process qGetTLSAddr request"));
9308 throw_error (TLS_GENERIC_ERROR
,
9309 _("TLS not supported or disabled on this target"));
9314 /* Provide thread local base, i.e. Thread Information Block address.
9315 Returns 1 if ptid is found and thread_local_base is non zero. */
9318 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9320 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9322 struct remote_state
*rs
= get_remote_state ();
9324 char *endp
= rs
->buf
+ get_remote_packet_size ();
9325 enum packet_result result
;
9327 strcpy (p
, "qGetTIBAddr:");
9329 p
= write_ptid (p
, endp
, ptid
);
9333 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9334 result
= packet_ok (rs
->buf
,
9335 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9336 if (result
== PACKET_OK
)
9340 unpack_varlen_hex (rs
->buf
, &result
);
9342 *addr
= (CORE_ADDR
) result
;
9345 else if (result
== PACKET_UNKNOWN
)
9346 error (_("Remote target doesn't support qGetTIBAddr packet"));
9348 error (_("Remote target failed to process qGetTIBAddr request"));
9351 error (_("qGetTIBAddr not supported or disabled on this target"));
9356 /* Support for inferring a target description based on the current
9357 architecture and the size of a 'g' packet. While the 'g' packet
9358 can have any size (since optional registers can be left off the
9359 end), some sizes are easily recognizable given knowledge of the
9360 approximate architecture. */
9362 struct remote_g_packet_guess
9365 const struct target_desc
*tdesc
;
9367 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9368 DEF_VEC_O(remote_g_packet_guess_s
);
9370 struct remote_g_packet_data
9372 VEC(remote_g_packet_guess_s
) *guesses
;
9375 static struct gdbarch_data
*remote_g_packet_data_handle
;
9378 remote_g_packet_data_init (struct obstack
*obstack
)
9380 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9384 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9385 const struct target_desc
*tdesc
)
9387 struct remote_g_packet_data
*data
9388 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9389 struct remote_g_packet_guess new_guess
, *guess
;
9392 gdb_assert (tdesc
!= NULL
);
9395 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9397 if (guess
->bytes
== bytes
)
9398 internal_error (__FILE__
, __LINE__
,
9399 _("Duplicate g packet description added for size %d"),
9402 new_guess
.bytes
= bytes
;
9403 new_guess
.tdesc
= tdesc
;
9404 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9407 /* Return 1 if remote_read_description would do anything on this target
9408 and architecture, 0 otherwise. */
9411 remote_read_description_p (struct target_ops
*target
)
9413 struct remote_g_packet_data
*data
9414 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9416 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9422 static const struct target_desc
*
9423 remote_read_description (struct target_ops
*target
)
9425 struct remote_g_packet_data
*data
9426 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9428 /* Do not try this during initial connection, when we do not know
9429 whether there is a running but stopped thread. */
9430 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9433 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9435 struct remote_g_packet_guess
*guess
;
9437 int bytes
= send_g_packet ();
9440 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9442 if (guess
->bytes
== bytes
)
9443 return guess
->tdesc
;
9445 /* We discard the g packet. A minor optimization would be to
9446 hold on to it, and fill the register cache once we have selected
9447 an architecture, but it's too tricky to do safely. */
9453 /* Remote file transfer support. This is host-initiated I/O, not
9454 target-initiated; for target-initiated, see remote-fileio.c. */
9456 /* If *LEFT is at least the length of STRING, copy STRING to
9457 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9458 decrease *LEFT. Otherwise raise an error. */
9461 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9463 int len
= strlen (string
);
9466 error (_("Packet too long for target."));
9468 memcpy (*buffer
, string
, len
);
9472 /* NUL-terminate the buffer as a convenience, if there is
9478 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9479 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9480 decrease *LEFT. Otherwise raise an error. */
9483 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9486 if (2 * len
> *left
)
9487 error (_("Packet too long for target."));
9489 bin2hex (bytes
, *buffer
, len
);
9493 /* NUL-terminate the buffer as a convenience, if there is
9499 /* If *LEFT is large enough, convert VALUE to hex and add it to
9500 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9501 decrease *LEFT. Otherwise raise an error. */
9504 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9506 int len
= hexnumlen (value
);
9509 error (_("Packet too long for target."));
9511 hexnumstr (*buffer
, value
);
9515 /* NUL-terminate the buffer as a convenience, if there is
9521 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9522 value, *REMOTE_ERRNO to the remote error number or zero if none
9523 was included, and *ATTACHMENT to point to the start of the annex
9524 if any. The length of the packet isn't needed here; there may
9525 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9527 Return 0 if the packet could be parsed, -1 if it could not. If
9528 -1 is returned, the other variables may not be initialized. */
9531 remote_hostio_parse_result (char *buffer
, int *retcode
,
9532 int *remote_errno
, char **attachment
)
9539 if (buffer
[0] != 'F')
9543 *retcode
= strtol (&buffer
[1], &p
, 16);
9544 if (errno
!= 0 || p
== &buffer
[1])
9547 /* Check for ",errno". */
9551 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9552 if (errno
!= 0 || p
+ 1 == p2
)
9557 /* Check for ";attachment". If there is no attachment, the
9558 packet should end here. */
9561 *attachment
= p
+ 1;
9564 else if (*p
== '\0')
9570 /* Send a prepared I/O packet to the target and read its response.
9571 The prepared packet is in the global RS->BUF before this function
9572 is called, and the answer is there when we return.
9574 COMMAND_BYTES is the length of the request to send, which may include
9575 binary data. WHICH_PACKET is the packet configuration to check
9576 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9577 is set to the error number and -1 is returned. Otherwise the value
9578 returned by the function is returned.
9580 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9581 attachment is expected; an error will be reported if there's a
9582 mismatch. If one is found, *ATTACHMENT will be set to point into
9583 the packet buffer and *ATTACHMENT_LEN will be set to the
9584 attachment's length. */
9587 remote_hostio_send_command (int command_bytes
, int which_packet
,
9588 int *remote_errno
, char **attachment
,
9589 int *attachment_len
)
9591 struct remote_state
*rs
= get_remote_state ();
9592 int ret
, bytes_read
;
9593 char *attachment_tmp
;
9596 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9598 *remote_errno
= FILEIO_ENOSYS
;
9602 putpkt_binary (rs
->buf
, command_bytes
);
9603 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9605 /* If it timed out, something is wrong. Don't try to parse the
9609 *remote_errno
= FILEIO_EINVAL
;
9613 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9616 *remote_errno
= FILEIO_EINVAL
;
9618 case PACKET_UNKNOWN
:
9619 *remote_errno
= FILEIO_ENOSYS
;
9625 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9628 *remote_errno
= FILEIO_EINVAL
;
9632 /* Make sure we saw an attachment if and only if we expected one. */
9633 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9634 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9636 *remote_errno
= FILEIO_EINVAL
;
9640 /* If an attachment was found, it must point into the packet buffer;
9641 work out how many bytes there were. */
9642 if (attachment_tmp
!= NULL
)
9644 *attachment
= attachment_tmp
;
9645 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9651 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9652 remote file descriptor, or -1 if an error occurs (and set
9656 remote_hostio_open (const char *filename
, int flags
, int mode
,
9659 struct remote_state
*rs
= get_remote_state ();
9661 int left
= get_remote_packet_size () - 1;
9663 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9665 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9667 remote_buffer_add_string (&p
, &left
, ",");
9669 remote_buffer_add_int (&p
, &left
, flags
);
9670 remote_buffer_add_string (&p
, &left
, ",");
9672 remote_buffer_add_int (&p
, &left
, mode
);
9674 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9675 remote_errno
, NULL
, NULL
);
9678 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9679 Return the number of bytes written, or -1 if an error occurs (and
9680 set *REMOTE_ERRNO). */
9683 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9684 ULONGEST offset
, int *remote_errno
)
9686 struct remote_state
*rs
= get_remote_state ();
9688 int left
= get_remote_packet_size ();
9691 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9693 remote_buffer_add_int (&p
, &left
, fd
);
9694 remote_buffer_add_string (&p
, &left
, ",");
9696 remote_buffer_add_int (&p
, &left
, offset
);
9697 remote_buffer_add_string (&p
, &left
, ",");
9699 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9700 get_remote_packet_size () - (p
- rs
->buf
));
9702 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9703 remote_errno
, NULL
, NULL
);
9706 /* Read up to LEN bytes FD on the remote target into READ_BUF
9707 Return the number of bytes read, or -1 if an error occurs (and
9708 set *REMOTE_ERRNO). */
9711 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9712 ULONGEST offset
, int *remote_errno
)
9714 struct remote_state
*rs
= get_remote_state ();
9717 int left
= get_remote_packet_size ();
9718 int ret
, attachment_len
;
9721 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9723 remote_buffer_add_int (&p
, &left
, fd
);
9724 remote_buffer_add_string (&p
, &left
, ",");
9726 remote_buffer_add_int (&p
, &left
, len
);
9727 remote_buffer_add_string (&p
, &left
, ",");
9729 remote_buffer_add_int (&p
, &left
, offset
);
9731 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9732 remote_errno
, &attachment
,
9738 read_len
= remote_unescape_input (attachment
, attachment_len
,
9740 if (read_len
!= ret
)
9741 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9746 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9747 (and set *REMOTE_ERRNO). */
9750 remote_hostio_close (int fd
, int *remote_errno
)
9752 struct remote_state
*rs
= get_remote_state ();
9754 int left
= get_remote_packet_size () - 1;
9756 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9758 remote_buffer_add_int (&p
, &left
, fd
);
9760 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9761 remote_errno
, NULL
, NULL
);
9764 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9765 occurs (and set *REMOTE_ERRNO). */
9768 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9770 struct remote_state
*rs
= get_remote_state ();
9772 int left
= get_remote_packet_size () - 1;
9774 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9776 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9779 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9780 remote_errno
, NULL
, NULL
);
9783 /* Read value of symbolic link FILENAME on the remote target. Return
9784 a null-terminated string allocated via xmalloc, or NULL if an error
9785 occurs (and set *REMOTE_ERRNO). */
9788 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9790 struct remote_state
*rs
= get_remote_state ();
9793 int left
= get_remote_packet_size ();
9794 int len
, attachment_len
;
9798 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9800 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9803 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9804 remote_errno
, &attachment
,
9810 ret
= xmalloc (len
+ 1);
9812 read_len
= remote_unescape_input (attachment
, attachment_len
,
9814 if (read_len
!= len
)
9815 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9822 remote_fileio_errno_to_host (int errnum
)
9846 case FILEIO_ENOTDIR
:
9866 case FILEIO_ENAMETOOLONG
:
9867 return ENAMETOOLONG
;
9873 remote_hostio_error (int errnum
)
9875 int host_error
= remote_fileio_errno_to_host (errnum
);
9877 if (host_error
== -1)
9878 error (_("Unknown remote I/O error %d"), errnum
);
9880 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9884 remote_hostio_close_cleanup (void *opaque
)
9886 int fd
= *(int *) opaque
;
9889 remote_hostio_close (fd
, &remote_errno
);
9894 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9896 const char *filename
= bfd_get_filename (abfd
);
9897 int fd
, remote_errno
;
9900 gdb_assert (remote_filename_p (filename
));
9902 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9905 errno
= remote_fileio_errno_to_host (remote_errno
);
9906 bfd_set_error (bfd_error_system_call
);
9910 stream
= xmalloc (sizeof (int));
9916 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9918 int fd
= *(int *)stream
;
9923 /* Ignore errors on close; these may happen if the remote
9924 connection was already torn down. */
9925 remote_hostio_close (fd
, &remote_errno
);
9927 /* Zero means success. */
9932 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9933 file_ptr nbytes
, file_ptr offset
)
9935 int fd
= *(int *)stream
;
9937 file_ptr pos
, bytes
;
9940 while (nbytes
> pos
)
9942 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9943 offset
+ pos
, &remote_errno
);
9945 /* Success, but no bytes, means end-of-file. */
9949 errno
= remote_fileio_errno_to_host (remote_errno
);
9950 bfd_set_error (bfd_error_system_call
);
9961 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9963 /* FIXME: We should probably implement remote_hostio_stat. */
9964 sb
->st_size
= INT_MAX
;
9969 remote_filename_p (const char *filename
)
9971 return strncmp (filename
, "remote:", 7) == 0;
9975 remote_bfd_open (const char *remote_file
, const char *target
)
9977 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9978 remote_bfd_iovec_open
, NULL
,
9979 remote_bfd_iovec_pread
,
9980 remote_bfd_iovec_close
,
9981 remote_bfd_iovec_stat
);
9987 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9989 struct cleanup
*back_to
, *close_cleanup
;
9990 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9993 int bytes_in_buffer
;
9998 error (_("command can only be used with remote target"));
10000 file
= fopen (local_file
, "rb");
10002 perror_with_name (local_file
);
10003 back_to
= make_cleanup_fclose (file
);
10005 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10007 0700, &remote_errno
);
10009 remote_hostio_error (remote_errno
);
10011 /* Send up to this many bytes at once. They won't all fit in the
10012 remote packet limit, so we'll transfer slightly fewer. */
10013 io_size
= get_remote_packet_size ();
10014 buffer
= xmalloc (io_size
);
10015 make_cleanup (xfree
, buffer
);
10017 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10019 bytes_in_buffer
= 0;
10022 while (bytes_in_buffer
|| !saw_eof
)
10026 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10027 io_size
- bytes_in_buffer
,
10032 error (_("Error reading %s."), local_file
);
10035 /* EOF. Unless there is something still in the
10036 buffer from the last iteration, we are done. */
10038 if (bytes_in_buffer
== 0)
10046 bytes
+= bytes_in_buffer
;
10047 bytes_in_buffer
= 0;
10049 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10050 offset
, &remote_errno
);
10053 remote_hostio_error (remote_errno
);
10054 else if (retcode
== 0)
10055 error (_("Remote write of %d bytes returned 0!"), bytes
);
10056 else if (retcode
< bytes
)
10058 /* Short write. Save the rest of the read data for the next
10060 bytes_in_buffer
= bytes
- retcode
;
10061 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10067 discard_cleanups (close_cleanup
);
10068 if (remote_hostio_close (fd
, &remote_errno
))
10069 remote_hostio_error (remote_errno
);
10072 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10073 do_cleanups (back_to
);
10077 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10079 struct cleanup
*back_to
, *close_cleanup
;
10080 int fd
, remote_errno
, bytes
, io_size
;
10086 error (_("command can only be used with remote target"));
10088 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10090 remote_hostio_error (remote_errno
);
10092 file
= fopen (local_file
, "wb");
10094 perror_with_name (local_file
);
10095 back_to
= make_cleanup_fclose (file
);
10097 /* Send up to this many bytes at once. They won't all fit in the
10098 remote packet limit, so we'll transfer slightly fewer. */
10099 io_size
= get_remote_packet_size ();
10100 buffer
= xmalloc (io_size
);
10101 make_cleanup (xfree
, buffer
);
10103 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10108 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10110 /* Success, but no bytes, means end-of-file. */
10113 remote_hostio_error (remote_errno
);
10117 bytes
= fwrite (buffer
, 1, bytes
, file
);
10119 perror_with_name (local_file
);
10122 discard_cleanups (close_cleanup
);
10123 if (remote_hostio_close (fd
, &remote_errno
))
10124 remote_hostio_error (remote_errno
);
10127 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10128 do_cleanups (back_to
);
10132 remote_file_delete (const char *remote_file
, int from_tty
)
10134 int retcode
, remote_errno
;
10137 error (_("command can only be used with remote target"));
10139 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10141 remote_hostio_error (remote_errno
);
10144 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10148 remote_put_command (char *args
, int from_tty
)
10150 struct cleanup
*back_to
;
10154 error_no_arg (_("file to put"));
10156 argv
= gdb_buildargv (args
);
10157 back_to
= make_cleanup_freeargv (argv
);
10158 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10159 error (_("Invalid parameters to remote put"));
10161 remote_file_put (argv
[0], argv
[1], from_tty
);
10163 do_cleanups (back_to
);
10167 remote_get_command (char *args
, int from_tty
)
10169 struct cleanup
*back_to
;
10173 error_no_arg (_("file to get"));
10175 argv
= gdb_buildargv (args
);
10176 back_to
= make_cleanup_freeargv (argv
);
10177 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10178 error (_("Invalid parameters to remote get"));
10180 remote_file_get (argv
[0], argv
[1], from_tty
);
10182 do_cleanups (back_to
);
10186 remote_delete_command (char *args
, int from_tty
)
10188 struct cleanup
*back_to
;
10192 error_no_arg (_("file to delete"));
10194 argv
= gdb_buildargv (args
);
10195 back_to
= make_cleanup_freeargv (argv
);
10196 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10197 error (_("Invalid parameters to remote delete"));
10199 remote_file_delete (argv
[0], from_tty
);
10201 do_cleanups (back_to
);
10205 remote_command (char *args
, int from_tty
)
10207 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10211 remote_can_execute_reverse (void)
10213 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10214 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10221 remote_supports_non_stop (void)
10227 remote_supports_disable_randomization (void)
10229 /* Only supported in extended mode. */
10234 remote_supports_multi_process (void)
10236 struct remote_state
*rs
= get_remote_state ();
10238 /* Only extended-remote handles being attached to multiple
10239 processes, even though plain remote can use the multi-process
10240 thread id extensions, so that GDB knows the target process's
10242 return rs
->extended
&& remote_multi_process_p (rs
);
10246 remote_supports_cond_tracepoints (void)
10248 struct remote_state
*rs
= get_remote_state ();
10250 return rs
->cond_tracepoints
;
10254 remote_supports_cond_breakpoints (void)
10256 struct remote_state
*rs
= get_remote_state ();
10258 return rs
->cond_breakpoints
;
10262 remote_supports_fast_tracepoints (void)
10264 struct remote_state
*rs
= get_remote_state ();
10266 return rs
->fast_tracepoints
;
10270 remote_supports_static_tracepoints (void)
10272 struct remote_state
*rs
= get_remote_state ();
10274 return rs
->static_tracepoints
;
10278 remote_supports_install_in_trace (void)
10280 struct remote_state
*rs
= get_remote_state ();
10282 return rs
->install_in_trace
;
10286 remote_supports_enable_disable_tracepoint (void)
10288 struct remote_state
*rs
= get_remote_state ();
10290 return rs
->enable_disable_tracepoints
;
10294 remote_supports_string_tracing (void)
10296 struct remote_state
*rs
= get_remote_state ();
10298 return rs
->string_tracing
;
10302 remote_can_run_breakpoint_commands (void)
10304 struct remote_state
*rs
= get_remote_state ();
10306 return rs
->breakpoint_commands
;
10310 remote_trace_init (void)
10313 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10314 if (strcmp (target_buf
, "OK") != 0)
10315 error (_("Target does not support this command."));
10318 static void free_actions_list (char **actions_list
);
10319 static void free_actions_list_cleanup_wrapper (void *);
10321 free_actions_list_cleanup_wrapper (void *al
)
10323 free_actions_list (al
);
10327 free_actions_list (char **actions_list
)
10331 if (actions_list
== 0)
10334 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10335 xfree (actions_list
[ndx
]);
10337 xfree (actions_list
);
10340 /* Recursive routine to walk through command list including loops, and
10341 download packets for each command. */
10344 remote_download_command_source (int num
, ULONGEST addr
,
10345 struct command_line
*cmds
)
10347 struct remote_state
*rs
= get_remote_state ();
10348 struct command_line
*cmd
;
10350 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10352 QUIT
; /* Allow user to bail out with ^C. */
10353 strcpy (rs
->buf
, "QTDPsrc:");
10354 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10355 rs
->buf
+ strlen (rs
->buf
),
10356 rs
->buf_size
- strlen (rs
->buf
));
10358 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10359 if (strcmp (target_buf
, "OK"))
10360 warning (_("Target does not support source download."));
10362 if (cmd
->control_type
== while_control
10363 || cmd
->control_type
== while_stepping_control
)
10365 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10367 QUIT
; /* Allow user to bail out with ^C. */
10368 strcpy (rs
->buf
, "QTDPsrc:");
10369 encode_source_string (num
, addr
, "cmd", "end",
10370 rs
->buf
+ strlen (rs
->buf
),
10371 rs
->buf_size
- strlen (rs
->buf
));
10373 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10374 if (strcmp (target_buf
, "OK"))
10375 warning (_("Target does not support source download."));
10381 remote_download_tracepoint (struct bp_location
*loc
)
10383 #define BUF_SIZE 2048
10387 char buf
[BUF_SIZE
];
10388 char **tdp_actions
;
10389 char **stepping_actions
;
10391 struct cleanup
*old_chain
= NULL
;
10392 struct agent_expr
*aexpr
;
10393 struct cleanup
*aexpr_chain
= NULL
;
10395 struct breakpoint
*b
= loc
->owner
;
10396 struct tracepoint
*t
= (struct tracepoint
*) b
;
10398 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10399 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10401 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10404 tpaddr
= loc
->address
;
10405 sprintf_vma (addrbuf
, tpaddr
);
10406 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10407 addrbuf
, /* address */
10408 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10409 t
->step_count
, t
->pass_count
);
10410 /* Fast tracepoints are mostly handled by the target, but we can
10411 tell the target how big of an instruction block should be moved
10413 if (b
->type
== bp_fast_tracepoint
)
10415 /* Only test for support at download time; we may not know
10416 target capabilities at definition time. */
10417 if (remote_supports_fast_tracepoints ())
10421 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10422 tpaddr
, &isize
, NULL
))
10423 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10426 /* If it passed validation at definition but fails now,
10427 something is very wrong. */
10428 internal_error (__FILE__
, __LINE__
,
10429 _("Fast tracepoint not "
10430 "valid during download"));
10433 /* Fast tracepoints are functionally identical to regular
10434 tracepoints, so don't take lack of support as a reason to
10435 give up on the trace run. */
10436 warning (_("Target does not support fast tracepoints, "
10437 "downloading %d as regular tracepoint"), b
->number
);
10439 else if (b
->type
== bp_static_tracepoint
)
10441 /* Only test for support at download time; we may not know
10442 target capabilities at definition time. */
10443 if (remote_supports_static_tracepoints ())
10445 struct static_tracepoint_marker marker
;
10447 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10448 strcat (buf
, ":S");
10450 error (_("Static tracepoint not valid during download"));
10453 /* Fast tracepoints are functionally identical to regular
10454 tracepoints, so don't take lack of support as a reason
10455 to give up on the trace run. */
10456 error (_("Target does not support static tracepoints"));
10458 /* If the tracepoint has a conditional, make it into an agent
10459 expression and append to the definition. */
10462 /* Only test support at download time, we may not know target
10463 capabilities at definition time. */
10464 if (remote_supports_cond_tracepoints ())
10466 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10467 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10468 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10470 pkt
= buf
+ strlen (buf
);
10471 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10472 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10474 do_cleanups (aexpr_chain
);
10477 warning (_("Target does not support conditional tracepoints, "
10478 "ignoring tp %d cond"), b
->number
);
10481 if (b
->commands
|| *default_collect
)
10484 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10485 if (strcmp (target_buf
, "OK"))
10486 error (_("Target does not support tracepoints."));
10488 /* do_single_steps (t); */
10491 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10493 QUIT
; /* Allow user to bail out with ^C. */
10494 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10495 b
->number
, addrbuf
, /* address */
10497 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10500 remote_get_noisy_reply (&target_buf
,
10502 if (strcmp (target_buf
, "OK"))
10503 error (_("Error on target while setting tracepoints."));
10506 if (stepping_actions
)
10508 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10510 QUIT
; /* Allow user to bail out with ^C. */
10511 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10512 b
->number
, addrbuf
, /* address */
10513 ((ndx
== 0) ? "S" : ""),
10514 stepping_actions
[ndx
],
10515 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10517 remote_get_noisy_reply (&target_buf
,
10519 if (strcmp (target_buf
, "OK"))
10520 error (_("Error on target while setting tracepoints."));
10524 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10527 if (b
->addr_string
)
10529 strcpy (buf
, "QTDPsrc:");
10530 encode_source_string (b
->number
, loc
->address
,
10531 "at", b
->addr_string
, buf
+ strlen (buf
),
10532 2048 - strlen (buf
));
10535 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10536 if (strcmp (target_buf
, "OK"))
10537 warning (_("Target does not support source download."));
10539 if (b
->cond_string
)
10541 strcpy (buf
, "QTDPsrc:");
10542 encode_source_string (b
->number
, loc
->address
,
10543 "cond", b
->cond_string
, buf
+ strlen (buf
),
10544 2048 - strlen (buf
));
10546 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10547 if (strcmp (target_buf
, "OK"))
10548 warning (_("Target does not support source download."));
10550 remote_download_command_source (b
->number
, loc
->address
,
10551 breakpoint_commands (b
));
10554 do_cleanups (old_chain
);
10558 remote_can_download_tracepoint (void)
10560 struct remote_state
*rs
= get_remote_state ();
10561 struct trace_status
*ts
;
10564 /* Don't try to install tracepoints until we've relocated our
10565 symbols, and fetched and merged the target's tracepoint list with
10567 if (rs
->starting_up
)
10570 ts
= current_trace_status ();
10571 status
= remote_get_trace_status (ts
);
10573 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10576 /* If we are in a tracing experiment, but remote stub doesn't support
10577 installing tracepoint in trace, we have to return. */
10578 if (!remote_supports_install_in_trace ())
10586 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10588 struct remote_state
*rs
= get_remote_state ();
10591 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10592 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10594 p
= rs
->buf
+ strlen (rs
->buf
);
10595 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10596 error (_("Trace state variable name too long for tsv definition packet"));
10597 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10600 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10601 if (*target_buf
== '\0')
10602 error (_("Target does not support this command."));
10603 if (strcmp (target_buf
, "OK") != 0)
10604 error (_("Error on target while downloading trace state variable."));
10608 remote_enable_tracepoint (struct bp_location
*location
)
10610 struct remote_state
*rs
= get_remote_state ();
10613 sprintf_vma (addr_buf
, location
->address
);
10614 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10615 location
->owner
->number
, addr_buf
);
10617 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10618 if (*rs
->buf
== '\0')
10619 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10620 if (strcmp (rs
->buf
, "OK") != 0)
10621 error (_("Error on target while enabling tracepoint."));
10625 remote_disable_tracepoint (struct bp_location
*location
)
10627 struct remote_state
*rs
= get_remote_state ();
10630 sprintf_vma (addr_buf
, location
->address
);
10631 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10632 location
->owner
->number
, addr_buf
);
10634 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10635 if (*rs
->buf
== '\0')
10636 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10637 if (strcmp (rs
->buf
, "OK") != 0)
10638 error (_("Error on target while disabling tracepoint."));
10642 remote_trace_set_readonly_regions (void)
10646 bfd_size_type size
;
10652 return; /* No information to give. */
10654 strcpy (target_buf
, "QTro");
10655 offset
= strlen (target_buf
);
10656 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10658 char tmp1
[40], tmp2
[40];
10661 if ((s
->flags
& SEC_LOAD
) == 0 ||
10662 /* (s->flags & SEC_CODE) == 0 || */
10663 (s
->flags
& SEC_READONLY
) == 0)
10667 vma
= bfd_get_section_vma (abfd
, s
);
10668 size
= bfd_get_section_size (s
);
10669 sprintf_vma (tmp1
, vma
);
10670 sprintf_vma (tmp2
, vma
+ size
);
10671 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10672 if (offset
+ sec_length
+ 1 > target_buf_size
)
10674 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10677 Too many sections for read-only sections definition packet."));
10680 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10682 offset
+= sec_length
;
10686 putpkt (target_buf
);
10687 getpkt (&target_buf
, &target_buf_size
, 0);
10692 remote_trace_start (void)
10694 putpkt ("QTStart");
10695 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10696 if (*target_buf
== '\0')
10697 error (_("Target does not support this command."));
10698 if (strcmp (target_buf
, "OK") != 0)
10699 error (_("Bogus reply from target: %s"), target_buf
);
10703 remote_get_trace_status (struct trace_status
*ts
)
10705 /* Initialize it just to avoid a GCC false warning. */
10707 /* FIXME we need to get register block size some other way. */
10708 extern int trace_regblock_size
;
10709 volatile struct gdb_exception ex
;
10711 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10713 putpkt ("qTStatus");
10715 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10717 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10721 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10723 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10726 throw_exception (ex
);
10729 /* If the remote target doesn't do tracing, flag it. */
10733 /* We're working with a live target. */
10734 ts
->filename
= NULL
;
10737 error (_("Bogus trace status reply from target: %s"), target_buf
);
10739 /* Function 'parse_trace_status' sets default value of each field of
10740 'ts' at first, so we don't have to do it here. */
10741 parse_trace_status (p
, ts
);
10743 return ts
->running
;
10747 remote_get_tracepoint_status (struct breakpoint
*bp
,
10748 struct uploaded_tp
*utp
)
10750 struct remote_state
*rs
= get_remote_state ();
10752 struct bp_location
*loc
;
10753 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10754 size_t size
= get_remote_packet_size ();
10758 tp
->base
.hit_count
= 0;
10759 tp
->traceframe_usage
= 0;
10760 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10762 /* If the tracepoint was never downloaded, don't go asking for
10764 if (tp
->number_on_target
== 0)
10766 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10767 phex_nz (loc
->address
, 0));
10769 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10770 if (reply
&& *reply
)
10773 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10779 utp
->hit_count
= 0;
10780 utp
->traceframe_usage
= 0;
10781 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10782 phex_nz (utp
->addr
, 0));
10784 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10785 if (reply
&& *reply
)
10788 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10794 remote_trace_stop (void)
10797 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10798 if (*target_buf
== '\0')
10799 error (_("Target does not support this command."));
10800 if (strcmp (target_buf
, "OK") != 0)
10801 error (_("Bogus reply from target: %s"), target_buf
);
10805 remote_trace_find (enum trace_find_type type
, int num
,
10806 ULONGEST addr1
, ULONGEST addr2
,
10809 struct remote_state
*rs
= get_remote_state ();
10810 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10812 int target_frameno
= -1, target_tracept
= -1;
10814 /* Lookups other than by absolute frame number depend on the current
10815 trace selected, so make sure it is correct on the remote end
10817 if (type
!= tfind_number
)
10818 set_remote_traceframe ();
10821 strcpy (p
, "QTFrame:");
10822 p
= strchr (p
, '\0');
10826 xsnprintf (p
, endbuf
- p
, "%x", num
);
10829 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10832 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10835 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10836 phex_nz (addr2
, 0));
10838 case tfind_outside
:
10839 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10840 phex_nz (addr2
, 0));
10843 error (_("Unknown trace find type %d"), type
);
10847 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10848 if (*reply
== '\0')
10849 error (_("Target does not support this command."));
10851 while (reply
&& *reply
)
10856 target_frameno
= (int) strtol (p
, &reply
, 16);
10858 error (_("Unable to parse trace frame number"));
10859 /* Don't update our remote traceframe number cache on failure
10860 to select a remote traceframe. */
10861 if (target_frameno
== -1)
10866 target_tracept
= (int) strtol (p
, &reply
, 16);
10868 error (_("Unable to parse tracepoint number"));
10870 case 'O': /* "OK"? */
10871 if (reply
[1] == 'K' && reply
[2] == '\0')
10874 error (_("Bogus reply from target: %s"), reply
);
10877 error (_("Bogus reply from target: %s"), reply
);
10880 *tpp
= target_tracept
;
10882 remote_traceframe_number
= target_frameno
;
10883 return target_frameno
;
10887 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10889 struct remote_state
*rs
= get_remote_state ();
10893 set_remote_traceframe ();
10895 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10897 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10898 if (reply
&& *reply
)
10902 unpack_varlen_hex (reply
+ 1, &uval
);
10903 *val
= (LONGEST
) uval
;
10911 remote_save_trace_data (const char *filename
)
10913 struct remote_state
*rs
= get_remote_state ();
10917 strcpy (p
, "QTSave:");
10919 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10920 error (_("Remote file name too long for trace save packet"));
10921 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10924 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10925 if (*reply
== '\0')
10926 error (_("Target does not support this command."));
10927 if (strcmp (reply
, "OK") != 0)
10928 error (_("Bogus reply from target: %s"), reply
);
10932 /* This is basically a memory transfer, but needs to be its own packet
10933 because we don't know how the target actually organizes its trace
10934 memory, plus we want to be able to ask for as much as possible, but
10935 not be unhappy if we don't get as much as we ask for. */
10938 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10940 struct remote_state
*rs
= get_remote_state ();
10946 strcpy (p
, "qTBuffer:");
10948 p
+= hexnumstr (p
, offset
);
10950 p
+= hexnumstr (p
, len
);
10954 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10955 if (reply
&& *reply
)
10957 /* 'l' by itself means we're at the end of the buffer and
10958 there is nothing more to get. */
10962 /* Convert the reply into binary. Limit the number of bytes to
10963 convert according to our passed-in buffer size, rather than
10964 what was returned in the packet; if the target is
10965 unexpectedly generous and gives us a bigger reply than we
10966 asked for, we don't want to crash. */
10967 rslt
= hex2bin (target_buf
, buf
, len
);
10971 /* Something went wrong, flag as an error. */
10976 remote_set_disconnected_tracing (int val
)
10978 struct remote_state
*rs
= get_remote_state ();
10980 if (rs
->disconnected_tracing
)
10984 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10986 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10987 if (*reply
== '\0')
10988 error (_("Target does not support this command."));
10989 if (strcmp (reply
, "OK") != 0)
10990 error (_("Bogus reply from target: %s"), reply
);
10993 warning (_("Target does not support disconnected tracing."));
10997 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10999 struct thread_info
*info
= find_thread_ptid (ptid
);
11001 if (info
&& info
->private)
11002 return info
->private->core
;
11007 remote_set_circular_trace_buffer (int val
)
11009 struct remote_state
*rs
= get_remote_state ();
11012 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11014 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11015 if (*reply
== '\0')
11016 error (_("Target does not support this command."));
11017 if (strcmp (reply
, "OK") != 0)
11018 error (_("Bogus reply from target: %s"), reply
);
11021 static struct traceframe_info
*
11022 remote_traceframe_info (void)
11026 text
= target_read_stralloc (¤t_target
,
11027 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11030 struct traceframe_info
*info
;
11031 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11033 info
= parse_traceframe_info (text
);
11034 do_cleanups (back_to
);
11041 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11042 instruction on which a fast tracepoint may be placed. Returns -1
11043 if the packet is not supported, and 0 if the minimum instruction
11044 length is unknown. */
11047 remote_get_min_fast_tracepoint_insn_len (void)
11049 struct remote_state
*rs
= get_remote_state ();
11052 /* If we're not debugging a process yet, the IPA can't be
11054 if (!target_has_execution
)
11057 /* Make sure the remote is pointing at the right process. */
11058 set_general_process ();
11060 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11062 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11063 if (*reply
== '\0')
11067 ULONGEST min_insn_len
;
11069 unpack_varlen_hex (reply
, &min_insn_len
);
11071 return (int) min_insn_len
;
11076 remote_set_trace_buffer_size (LONGEST val
)
11078 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11081 struct remote_state
*rs
= get_remote_state ();
11082 char *buf
= rs
->buf
;
11083 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11084 enum packet_result result
;
11086 gdb_assert (val
>= 0 || val
== -1);
11087 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11088 /* Send -1 as literal "-1" to avoid host size dependency. */
11092 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11095 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11098 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11099 result
= packet_ok (rs
->buf
,
11100 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11102 if (result
!= PACKET_OK
)
11103 warning (_("Bogus reply from target: %s"), rs
->buf
);
11108 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
11110 struct remote_state
*rs
= get_remote_state ();
11112 char *buf
= rs
->buf
;
11113 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11116 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11119 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11120 nbytes
= bin2hex (user
, buf
, 0);
11126 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11127 nbytes
= bin2hex (notes
, buf
, 0);
11133 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11134 nbytes
= bin2hex (stop_notes
, buf
, 0);
11138 /* Ensure the buffer is terminated. */
11142 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11143 if (*reply
== '\0')
11146 if (strcmp (reply
, "OK") != 0)
11147 error (_("Bogus reply from target: %s"), reply
);
11153 remote_use_agent (int use
)
11155 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11157 struct remote_state
*rs
= get_remote_state ();
11159 /* If the stub supports QAgent. */
11160 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11162 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11164 if (strcmp (rs
->buf
, "OK") == 0)
11175 remote_can_use_agent (void)
11177 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11180 struct btrace_target_info
11182 /* The ptid of the traced thread. */
11186 /* Check whether the target supports branch tracing. */
11189 remote_supports_btrace (void)
11191 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11193 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11195 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11201 /* Enable branch tracing. */
11203 static struct btrace_target_info
*
11204 remote_enable_btrace (ptid_t ptid
)
11206 struct btrace_target_info
*tinfo
= NULL
;
11207 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11208 struct remote_state
*rs
= get_remote_state ();
11209 char *buf
= rs
->buf
;
11210 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11212 if (packet
->support
!= PACKET_ENABLE
)
11213 error (_("Target does not support branch tracing."));
11215 set_general_thread (ptid
);
11217 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11219 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11221 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11223 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11224 error (_("Could not enable branch tracing for %s: %s"),
11225 target_pid_to_str (ptid
), rs
->buf
+ 2);
11227 error (_("Could not enable branch tracing for %s."),
11228 target_pid_to_str (ptid
));
11231 tinfo
= xzalloc (sizeof (*tinfo
));
11232 tinfo
->ptid
= ptid
;
11237 /* Disable branch tracing. */
11240 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11242 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11243 struct remote_state
*rs
= get_remote_state ();
11244 char *buf
= rs
->buf
;
11245 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11247 if (packet
->support
!= PACKET_ENABLE
)
11248 error (_("Target does not support branch tracing."));
11250 set_general_thread (tinfo
->ptid
);
11252 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11254 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11256 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11258 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11259 error (_("Could not disable branch tracing for %s: %s"),
11260 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11262 error (_("Could not disable branch tracing for %s."),
11263 target_pid_to_str (tinfo
->ptid
));
11269 /* Teardown branch tracing. */
11272 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11274 /* We must not talk to the target during teardown. */
11278 /* Read the branch trace. */
11280 static VEC (btrace_block_s
) *
11281 remote_read_btrace (struct btrace_target_info
*tinfo
,
11282 enum btrace_read_type type
)
11284 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11285 struct remote_state
*rs
= get_remote_state ();
11286 VEC (btrace_block_s
) *btrace
= NULL
;
11290 if (packet
->support
!= PACKET_ENABLE
)
11291 error (_("Target does not support branch tracing."));
11293 #if !defined(HAVE_LIBEXPAT)
11294 error (_("Cannot process branch tracing result. XML parsing not supported."));
11299 case btrace_read_all
:
11302 case btrace_read_new
:
11306 internal_error (__FILE__
, __LINE__
,
11307 _("Bad branch tracing read type: %u."),
11308 (unsigned int) type
);
11311 xml
= target_read_stralloc (¤t_target
,
11312 TARGET_OBJECT_BTRACE
, annex
);
11315 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11317 btrace
= parse_xml_btrace (xml
);
11318 do_cleanups (cleanup
);
11325 init_remote_ops (void)
11327 remote_ops
.to_shortname
= "remote";
11328 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11329 remote_ops
.to_doc
=
11330 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11331 Specify the serial device it is connected to\n\
11332 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11333 remote_ops
.to_open
= remote_open
;
11334 remote_ops
.to_close
= remote_close
;
11335 remote_ops
.to_detach
= remote_detach
;
11336 remote_ops
.to_disconnect
= remote_disconnect
;
11337 remote_ops
.to_resume
= remote_resume
;
11338 remote_ops
.to_wait
= remote_wait
;
11339 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11340 remote_ops
.to_store_registers
= remote_store_registers
;
11341 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11342 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11343 remote_ops
.to_files_info
= remote_files_info
;
11344 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11345 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11346 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11347 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11348 remote_ops
.to_watchpoint_addr_within_range
=
11349 remote_watchpoint_addr_within_range
;
11350 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11351 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11352 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11353 remote_ops
.to_region_ok_for_hw_watchpoint
11354 = remote_region_ok_for_hw_watchpoint
;
11355 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11356 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11357 remote_ops
.to_kill
= remote_kill
;
11358 remote_ops
.to_load
= generic_load
;
11359 remote_ops
.to_mourn_inferior
= remote_mourn
;
11360 remote_ops
.to_pass_signals
= remote_pass_signals
;
11361 remote_ops
.to_program_signals
= remote_program_signals
;
11362 remote_ops
.to_thread_alive
= remote_thread_alive
;
11363 remote_ops
.to_find_new_threads
= remote_threads_info
;
11364 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11365 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11366 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11367 remote_ops
.to_stop
= remote_stop
;
11368 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11369 remote_ops
.to_rcmd
= remote_rcmd
;
11370 remote_ops
.to_log_command
= serial_log_command
;
11371 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11372 remote_ops
.to_stratum
= process_stratum
;
11373 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11374 remote_ops
.to_has_memory
= default_child_has_memory
;
11375 remote_ops
.to_has_stack
= default_child_has_stack
;
11376 remote_ops
.to_has_registers
= default_child_has_registers
;
11377 remote_ops
.to_has_execution
= default_child_has_execution
;
11378 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11379 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11380 remote_ops
.to_magic
= OPS_MAGIC
;
11381 remote_ops
.to_memory_map
= remote_memory_map
;
11382 remote_ops
.to_flash_erase
= remote_flash_erase
;
11383 remote_ops
.to_flash_done
= remote_flash_done
;
11384 remote_ops
.to_read_description
= remote_read_description
;
11385 remote_ops
.to_search_memory
= remote_search_memory
;
11386 remote_ops
.to_can_async_p
= remote_can_async_p
;
11387 remote_ops
.to_is_async_p
= remote_is_async_p
;
11388 remote_ops
.to_async
= remote_async
;
11389 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11390 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11391 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11392 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11393 remote_ops
.to_supports_disable_randomization
11394 = remote_supports_disable_randomization
;
11395 remote_ops
.to_fileio_open
= remote_hostio_open
;
11396 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11397 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11398 remote_ops
.to_fileio_close
= remote_hostio_close
;
11399 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11400 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11401 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11402 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11403 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11404 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11405 remote_ops
.to_trace_init
= remote_trace_init
;
11406 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11407 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11408 remote_ops
.to_download_trace_state_variable
11409 = remote_download_trace_state_variable
;
11410 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11411 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11412 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11413 remote_ops
.to_trace_start
= remote_trace_start
;
11414 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11415 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11416 remote_ops
.to_trace_stop
= remote_trace_stop
;
11417 remote_ops
.to_trace_find
= remote_trace_find
;
11418 remote_ops
.to_get_trace_state_variable_value
11419 = remote_get_trace_state_variable_value
;
11420 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11421 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11422 remote_ops
.to_upload_trace_state_variables
11423 = remote_upload_trace_state_variables
;
11424 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11425 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11426 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11427 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11428 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11429 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11430 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11431 remote_ops
.to_verify_memory
= remote_verify_memory
;
11432 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11433 remote_ops
.to_set_permissions
= remote_set_permissions
;
11434 remote_ops
.to_static_tracepoint_marker_at
11435 = remote_static_tracepoint_marker_at
;
11436 remote_ops
.to_static_tracepoint_markers_by_strid
11437 = remote_static_tracepoint_markers_by_strid
;
11438 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11439 remote_ops
.to_use_agent
= remote_use_agent
;
11440 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11441 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11442 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11443 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11444 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11445 remote_ops
.to_read_btrace
= remote_read_btrace
;
11448 /* Set up the extended remote vector by making a copy of the standard
11449 remote vector and adding to it. */
11452 init_extended_remote_ops (void)
11454 extended_remote_ops
= remote_ops
;
11456 extended_remote_ops
.to_shortname
= "extended-remote";
11457 extended_remote_ops
.to_longname
=
11458 "Extended remote serial target in gdb-specific protocol";
11459 extended_remote_ops
.to_doc
=
11460 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11461 Specify the serial device it is connected to (e.g. /dev/ttya).";
11462 extended_remote_ops
.to_open
= extended_remote_open
;
11463 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11464 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11465 extended_remote_ops
.to_detach
= extended_remote_detach
;
11466 extended_remote_ops
.to_attach
= extended_remote_attach
;
11467 extended_remote_ops
.to_kill
= extended_remote_kill
;
11468 extended_remote_ops
.to_supports_disable_randomization
11469 = extended_remote_supports_disable_randomization
;
11473 remote_can_async_p (void)
11475 if (!target_async_permitted
)
11476 /* We only enable async when the user specifically asks for it. */
11479 /* We're async whenever the serial device is. */
11480 return serial_can_async_p (remote_desc
);
11484 remote_is_async_p (void)
11486 if (!target_async_permitted
)
11487 /* We only enable async when the user specifically asks for it. */
11490 /* We're async whenever the serial device is. */
11491 return serial_is_async_p (remote_desc
);
11494 /* Pass the SERIAL event on and up to the client. One day this code
11495 will be able to delay notifying the client of an event until the
11496 point where an entire packet has been received. */
11498 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11500 static void *async_client_context
;
11501 static serial_event_ftype remote_async_serial_handler
;
11504 remote_async_serial_handler (struct serial
*scb
, void *context
)
11506 /* Don't propogate error information up to the client. Instead let
11507 the client find out about the error by querying the target. */
11508 async_client_callback (INF_REG_EVENT
, async_client_context
);
11512 remote_async_inferior_event_handler (gdb_client_data data
)
11514 inferior_event_handler (INF_REG_EVENT
, NULL
);
11518 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11519 void *context
), void *context
)
11521 if (callback
!= NULL
)
11523 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11524 async_client_callback
= callback
;
11525 async_client_context
= context
;
11528 serial_async (remote_desc
, NULL
, NULL
);
11532 set_remote_cmd (char *args
, int from_tty
)
11534 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11538 show_remote_cmd (char *args
, int from_tty
)
11540 /* We can't just use cmd_show_list here, because we want to skip
11541 the redundant "show remote Z-packet" and the legacy aliases. */
11542 struct cleanup
*showlist_chain
;
11543 struct cmd_list_element
*list
= remote_show_cmdlist
;
11544 struct ui_out
*uiout
= current_uiout
;
11546 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11547 for (; list
!= NULL
; list
= list
->next
)
11548 if (strcmp (list
->name
, "Z-packet") == 0)
11550 else if (list
->type
== not_set_cmd
)
11551 /* Alias commands are exactly like the original, except they
11552 don't have the normal type. */
11556 struct cleanup
*option_chain
11557 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11559 ui_out_field_string (uiout
, "name", list
->name
);
11560 ui_out_text (uiout
, ": ");
11561 if (list
->type
== show_cmd
)
11562 do_show_command ((char *) NULL
, from_tty
, list
);
11564 cmd_func (list
, NULL
, from_tty
);
11565 /* Close the tuple. */
11566 do_cleanups (option_chain
);
11569 /* Close the tuple. */
11570 do_cleanups (showlist_chain
);
11574 /* Function to be called whenever a new objfile (shlib) is detected. */
11576 remote_new_objfile (struct objfile
*objfile
)
11578 if (remote_desc
!= 0) /* Have a remote connection. */
11579 remote_check_symbols (objfile
);
11582 /* Pull all the tracepoints defined on the target and create local
11583 data structures representing them. We don't want to create real
11584 tracepoints yet, we don't want to mess up the user's existing
11588 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11590 struct remote_state
*rs
= get_remote_state ();
11593 /* Ask for a first packet of tracepoint definition. */
11595 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11597 while (*p
&& *p
!= 'l')
11599 parse_tracepoint_definition (p
, utpp
);
11600 /* Ask for another packet of tracepoint definition. */
11602 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11609 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11611 struct remote_state
*rs
= get_remote_state ();
11614 /* Ask for a first packet of variable definition. */
11616 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11618 while (*p
&& *p
!= 'l')
11620 parse_tsv_definition (p
, utsvp
);
11621 /* Ask for another packet of variable definition. */
11623 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11630 _initialize_remote (void)
11632 struct remote_state
*rs
;
11633 struct cmd_list_element
*cmd
;
11636 /* architecture specific data */
11637 remote_gdbarch_data_handle
=
11638 gdbarch_data_register_post_init (init_remote_state
);
11639 remote_g_packet_data_handle
=
11640 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11642 /* Initialize the per-target state. At the moment there is only one
11643 of these, not one per target. Only one target is active at a
11644 time. The default buffer size is unimportant; it will be expanded
11645 whenever a larger buffer is needed. */
11646 rs
= get_remote_state_raw ();
11647 rs
->buf_size
= 400;
11648 rs
->buf
= xmalloc (rs
->buf_size
);
11650 init_remote_ops ();
11651 add_target (&remote_ops
);
11653 init_extended_remote_ops ();
11654 add_target (&extended_remote_ops
);
11656 /* Hook into new objfile notification. */
11657 observer_attach_new_objfile (remote_new_objfile
);
11658 /* We're no longer interested in notification events of an inferior
11660 observer_attach_inferior_exit (discard_pending_stop_replies
);
11662 /* Set up signal handlers. */
11663 sigint_remote_token
=
11664 create_async_signal_handler (async_remote_interrupt
, NULL
);
11665 sigint_remote_twice_token
=
11666 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11669 init_remote_threadtests ();
11672 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11673 /* set/show remote ... */
11675 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11676 Remote protocol specific variables\n\
11677 Configure various remote-protocol specific variables such as\n\
11678 the packets being used"),
11679 &remote_set_cmdlist
, "set remote ",
11680 0 /* allow-unknown */, &setlist
);
11681 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11682 Remote protocol specific variables\n\
11683 Configure various remote-protocol specific variables such as\n\
11684 the packets being used"),
11685 &remote_show_cmdlist
, "show remote ",
11686 0 /* allow-unknown */, &showlist
);
11688 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11689 Compare section data on target to the exec file.\n\
11690 Argument is a single section name (default: all loaded sections)."),
11693 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11694 Send an arbitrary packet to a remote target.\n\
11695 maintenance packet TEXT\n\
11696 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11697 this command sends the string TEXT to the inferior, and displays the\n\
11698 response packet. GDB supplies the initial `$' character, and the\n\
11699 terminating `#' character and checksum."),
11702 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11703 Set whether to send break if interrupted."), _("\
11704 Show whether to send break if interrupted."), _("\
11705 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11706 set_remotebreak
, show_remotebreak
,
11707 &setlist
, &showlist
);
11708 cmd_name
= "remotebreak";
11709 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11710 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11711 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11712 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11713 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11715 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11716 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11718 Set interrupt sequence to remote target."), _("\
11719 Show interrupt sequence to remote target."), _("\
11720 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11721 NULL
, show_interrupt_sequence
,
11722 &remote_set_cmdlist
,
11723 &remote_show_cmdlist
);
11725 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11726 &interrupt_on_connect
, _("\
11727 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11728 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11729 If set, interrupt sequence is sent to remote target."),
11731 &remote_set_cmdlist
, &remote_show_cmdlist
);
11733 /* Install commands for configuring memory read/write packets. */
11735 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11736 Set the maximum number of bytes per memory write packet (deprecated)."),
11738 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11739 Show the maximum number of bytes per memory write packet (deprecated)."),
11741 add_cmd ("memory-write-packet-size", no_class
,
11742 set_memory_write_packet_size
, _("\
11743 Set the maximum number of bytes per memory-write packet.\n\
11744 Specify the number of bytes in a packet or 0 (zero) for the\n\
11745 default packet size. The actual limit is further reduced\n\
11746 dependent on the target. Specify ``fixed'' to disable the\n\
11747 further restriction and ``limit'' to enable that restriction."),
11748 &remote_set_cmdlist
);
11749 add_cmd ("memory-read-packet-size", no_class
,
11750 set_memory_read_packet_size
, _("\
11751 Set the maximum number of bytes per memory-read packet.\n\
11752 Specify the number of bytes in a packet or 0 (zero) for the\n\
11753 default packet size. The actual limit is further reduced\n\
11754 dependent on the target. Specify ``fixed'' to disable the\n\
11755 further restriction and ``limit'' to enable that restriction."),
11756 &remote_set_cmdlist
);
11757 add_cmd ("memory-write-packet-size", no_class
,
11758 show_memory_write_packet_size
,
11759 _("Show the maximum number of bytes per memory-write packet."),
11760 &remote_show_cmdlist
);
11761 add_cmd ("memory-read-packet-size", no_class
,
11762 show_memory_read_packet_size
,
11763 _("Show the maximum number of bytes per memory-read packet."),
11764 &remote_show_cmdlist
);
11766 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11767 &remote_hw_watchpoint_limit
, _("\
11768 Set the maximum number of target hardware watchpoints."), _("\
11769 Show the maximum number of target hardware watchpoints."), _("\
11770 Specify a negative limit for unlimited."),
11771 NULL
, NULL
, /* FIXME: i18n: The maximum
11772 number of target hardware
11773 watchpoints is %s. */
11774 &remote_set_cmdlist
, &remote_show_cmdlist
);
11775 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11776 &remote_hw_watchpoint_length_limit
, _("\
11777 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11778 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11779 Specify a negative limit for unlimited."),
11780 NULL
, NULL
, /* FIXME: i18n: The maximum
11781 length (in bytes) of a target
11782 hardware watchpoint is %s. */
11783 &remote_set_cmdlist
, &remote_show_cmdlist
);
11784 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11785 &remote_hw_breakpoint_limit
, _("\
11786 Set the maximum number of target hardware breakpoints."), _("\
11787 Show the maximum number of target hardware breakpoints."), _("\
11788 Specify a negative limit for unlimited."),
11789 NULL
, NULL
, /* FIXME: i18n: The maximum
11790 number of target hardware
11791 breakpoints is %s. */
11792 &remote_set_cmdlist
, &remote_show_cmdlist
);
11794 add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure
,
11795 &remote_address_size
, _("\
11796 Set the maximum size of the address (in bits) in a memory packet."), _("\
11797 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11799 NULL
, /* FIXME: i18n: */
11800 &setlist
, &showlist
);
11802 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11803 "X", "binary-download", 1);
11805 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11806 "vCont", "verbose-resume", 0);
11808 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11809 "QPassSignals", "pass-signals", 0);
11811 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11812 "QProgramSignals", "program-signals", 0);
11814 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11815 "qSymbol", "symbol-lookup", 0);
11817 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11818 "P", "set-register", 1);
11820 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11821 "p", "fetch-register", 1);
11823 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11824 "Z0", "software-breakpoint", 0);
11826 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11827 "Z1", "hardware-breakpoint", 0);
11829 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11830 "Z2", "write-watchpoint", 0);
11832 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11833 "Z3", "read-watchpoint", 0);
11835 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11836 "Z4", "access-watchpoint", 0);
11838 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11839 "qXfer:auxv:read", "read-aux-vector", 0);
11841 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11842 "qXfer:features:read", "target-features", 0);
11844 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11845 "qXfer:libraries:read", "library-info", 0);
11847 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11848 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11850 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11851 "qXfer:memory-map:read", "memory-map", 0);
11853 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11854 "qXfer:spu:read", "read-spu-object", 0);
11856 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11857 "qXfer:spu:write", "write-spu-object", 0);
11859 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11860 "qXfer:osdata:read", "osdata", 0);
11862 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11863 "qXfer:threads:read", "threads", 0);
11865 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11866 "qXfer:siginfo:read", "read-siginfo-object", 0);
11868 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11869 "qXfer:siginfo:write", "write-siginfo-object", 0);
11871 add_packet_config_cmd
11872 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11873 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11875 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11876 "qXfer:uib:read", "unwind-info-block", 0);
11878 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11879 "qGetTLSAddr", "get-thread-local-storage-address",
11882 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11883 "qGetTIBAddr", "get-thread-information-block-address",
11886 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11887 "bc", "reverse-continue", 0);
11889 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11890 "bs", "reverse-step", 0);
11892 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11893 "qSupported", "supported-packets", 0);
11895 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11896 "qSearch:memory", "search-memory", 0);
11898 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11899 "vFile:open", "hostio-open", 0);
11901 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11902 "vFile:pread", "hostio-pread", 0);
11904 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11905 "vFile:pwrite", "hostio-pwrite", 0);
11907 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11908 "vFile:close", "hostio-close", 0);
11910 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11911 "vFile:unlink", "hostio-unlink", 0);
11913 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11914 "vFile:readlink", "hostio-readlink", 0);
11916 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11917 "vAttach", "attach", 0);
11919 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11922 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11923 "QStartNoAckMode", "noack", 0);
11925 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11926 "vKill", "kill", 0);
11928 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11929 "qAttached", "query-attached", 0);
11931 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11932 "ConditionalTracepoints",
11933 "conditional-tracepoints", 0);
11935 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11936 "ConditionalBreakpoints",
11937 "conditional-breakpoints", 0);
11939 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11940 "BreakpointCommands",
11941 "breakpoint-commands", 0);
11943 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11944 "FastTracepoints", "fast-tracepoints", 0);
11946 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11947 "TracepointSource", "TracepointSource", 0);
11949 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11950 "QAllow", "allow", 0);
11952 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11953 "StaticTracepoints", "static-tracepoints", 0);
11955 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11956 "InstallInTrace", "install-in-trace", 0);
11958 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11959 "qXfer:statictrace:read", "read-sdata-object", 0);
11961 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11962 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11964 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11965 "QDisableRandomization", "disable-randomization", 0);
11967 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11968 "QAgent", "agent", 0);
11970 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
11971 "QTBuffer:size", "trace-buffer-size", 0);
11973 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
11974 "Qbtrace:off", "disable-btrace", 0);
11976 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
11977 "Qbtrace:bts", "enable-btrace", 0);
11979 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
11980 "qXfer:btrace", "read-btrace", 0);
11982 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11983 Z sub-packet has its own set and show commands, but users may
11984 have sets to this variable in their .gdbinit files (or in their
11986 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11987 &remote_Z_packet_detect
, _("\
11988 Set use of remote protocol `Z' packets"), _("\
11989 Show use of remote protocol `Z' packets "), _("\
11990 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11992 set_remote_protocol_Z_packet_cmd
,
11993 show_remote_protocol_Z_packet_cmd
,
11994 /* FIXME: i18n: Use of remote protocol
11995 `Z' packets is %s. */
11996 &remote_set_cmdlist
, &remote_show_cmdlist
);
11998 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11999 Manipulate files on the remote system\n\
12000 Transfer files to and from the remote target system."),
12001 &remote_cmdlist
, "remote ",
12002 0 /* allow-unknown */, &cmdlist
);
12004 add_cmd ("put", class_files
, remote_put_command
,
12005 _("Copy a local file to the remote system."),
12008 add_cmd ("get", class_files
, remote_get_command
,
12009 _("Copy a remote file to the local system."),
12012 add_cmd ("delete", class_files
, remote_delete_command
,
12013 _("Delete a remote file."),
12016 remote_exec_file
= xstrdup ("");
12017 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12018 &remote_exec_file
, _("\
12019 Set the remote pathname for \"run\""), _("\
12020 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12021 &remote_set_cmdlist
, &remote_show_cmdlist
);
12023 /* Eventually initialize fileio. See fileio.c */
12024 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12026 /* Take advantage of the fact that the LWP field is not used, to tag
12027 special ptids with it set to != 0. */
12028 magic_null_ptid
= ptid_build (42000, 1, -1);
12029 not_sent_ptid
= ptid_build (42000, 1, -2);
12030 any_thread_ptid
= ptid_build (42000, 1, 0);
12032 target_buf_size
= 2048;
12033 target_buf
= xmalloc (target_buf_size
);