1 /* Core dump and executable file functions below target vector, for GDB.
3 Copyright (C) 1986-2015 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/>. */
21 #include "arch-utils.h"
24 #ifdef HAVE_SYS_FILE_H
25 #include <sys/file.h> /* needed for F_OK and friends */
27 #include "frame.h" /* required by inferior.h */
35 #include "gdbthread.h"
40 #include "readline/readline.h"
42 #include "filenames.h"
43 #include "progspace.h"
46 #include "completer.h"
47 #include "filestuff.h"
53 /* List of all available core_fns. On gdb startup, each core file
54 register reader calls deprecated_add_core_fns() to register
55 information on each core format it is prepared to read. */
57 static struct core_fns
*core_file_fns
= NULL
;
59 /* The core_fns for a core file handler that is prepared to read the
60 core file currently open on core_bfd. */
62 static struct core_fns
*core_vec
= NULL
;
64 /* FIXME: kettenis/20031023: Eventually this variable should
67 static struct gdbarch
*core_gdbarch
= NULL
;
69 /* Per-core data. Currently, only the section table. Note that these
70 target sections are *not* mapped in the current address spaces' set
71 of target sections --- those should come only from pure executable
72 or shared library bfds. The core bfd sections are an
73 implementation detail of the core target, just like ptrace is for
74 unix child targets. */
75 static struct target_section_table
*core_data
;
77 static void core_files_info (struct target_ops
*);
79 static struct core_fns
*sniff_core_bfd (bfd
*);
81 static int gdb_check_format (bfd
*);
83 static void core_close (struct target_ops
*self
);
85 static void core_close_cleanup (void *ignore
);
87 static void add_to_thread_list (bfd
*, asection
*, void *);
89 static void init_core_ops (void);
91 void _initialize_corelow (void);
93 static struct target_ops core_ops
;
95 /* An arbitrary identifier for the core inferior. */
98 /* Link a new core_fns into the global core_file_fns list. Called on
99 gdb startup by the _initialize routine in each core file register
100 reader, to register information about each format the reader is
101 prepared to handle. */
104 deprecated_add_core_fns (struct core_fns
*cf
)
106 cf
->next
= core_file_fns
;
110 /* The default function that core file handlers can use to examine a
111 core file BFD and decide whether or not to accept the job of
112 reading the core file. */
115 default_core_sniffer (struct core_fns
*our_fns
, bfd
*abfd
)
119 result
= (bfd_get_flavour (abfd
) == our_fns
-> core_flavour
);
123 /* Walk through the list of core functions to find a set that can
124 handle the core file open on ABFD. Returns pointer to set that is
127 static struct core_fns
*
128 sniff_core_bfd (bfd
*abfd
)
131 struct core_fns
*yummy
= NULL
;
134 /* Don't sniff if we have support for register sets in
136 if (core_gdbarch
&& gdbarch_iterate_over_regset_sections_p (core_gdbarch
))
139 for (cf
= core_file_fns
; cf
!= NULL
; cf
= cf
->next
)
141 if (cf
->core_sniffer (cf
, abfd
))
149 warning (_("\"%s\": ambiguous core format, %d handlers match"),
150 bfd_get_filename (abfd
), matches
);
152 else if (matches
== 0)
153 error (_("\"%s\": no core file handler recognizes format"),
154 bfd_get_filename (abfd
));
159 /* The default is to reject every core file format we see. Either
160 BFD has to recognize it, or we have to provide a function in the
161 core file handler that recognizes it. */
164 default_check_format (bfd
*abfd
)
169 /* Attempt to recognize core file formats that BFD rejects. */
172 gdb_check_format (bfd
*abfd
)
176 for (cf
= core_file_fns
; cf
!= NULL
; cf
= cf
->next
)
178 if (cf
->check_format (abfd
))
186 /* Discard all vestiges of any previous core file and mark data and
187 stack spaces as empty. */
190 core_close (struct target_ops
*self
)
194 int pid
= ptid_get_pid (inferior_ptid
);
195 inferior_ptid
= null_ptid
; /* Avoid confusion from thread
198 exit_inferior_silent (pid
);
200 /* Clear out solib state while the bfd is still open. See
201 comments in clear_solib in solib.c. */
206 xfree (core_data
->sections
);
211 gdb_bfd_unref (core_bfd
);
219 core_close_cleanup (void *ignore
)
224 /* Look for sections whose names start with `.reg/' so that we can
225 extract the list of threads in a core file. */
228 add_to_thread_list (bfd
*abfd
, asection
*asect
, void *reg_sect_arg
)
233 asection
*reg_sect
= (asection
*) reg_sect_arg
;
235 struct inferior
*inf
;
237 if (strncmp (bfd_section_name (abfd
, asect
), ".reg/", 5) != 0)
240 core_tid
= atoi (bfd_section_name (abfd
, asect
) + 5);
242 pid
= bfd_core_file_pid (core_bfd
);
251 inf
= current_inferior ();
254 inferior_appeared (inf
, pid
);
255 inf
->fake_pid_p
= fake_pid_p
;
258 ptid
= ptid_build (pid
, lwpid
, 0);
262 /* Warning, Will Robinson, looking at BFD private data! */
265 && asect
->filepos
== reg_sect
->filepos
) /* Did we find .reg? */
266 inferior_ptid
= ptid
; /* Yes, make it current. */
269 /* This routine opens and sets up the core file bfd. */
272 core_open (const char *arg
, int from_tty
)
276 struct cleanup
*old_chain
;
281 volatile struct gdb_exception except
;
284 target_preopen (from_tty
);
288 error (_("No core file specified. (Use `detach' "
289 "to stop debugging a core file.)"));
291 error (_("No core file specified."));
294 filename
= tilde_expand (arg
);
295 if (!IS_ABSOLUTE_PATH (filename
))
297 temp
= concat (current_directory
, "/",
298 filename
, (char *) NULL
);
303 old_chain
= make_cleanup (xfree
, filename
);
305 flags
= O_BINARY
| O_LARGEFILE
;
310 scratch_chan
= gdb_open_cloexec (filename
, flags
, 0);
311 if (scratch_chan
< 0)
312 perror_with_name (filename
);
314 temp_bfd
= gdb_bfd_fopen (filename
, gnutarget
,
315 write_files
? FOPEN_RUB
: FOPEN_RB
,
317 if (temp_bfd
== NULL
)
318 perror_with_name (filename
);
320 if (!bfd_check_format (temp_bfd
, bfd_core
)
321 && !gdb_check_format (temp_bfd
))
323 /* Do it after the err msg */
324 /* FIXME: should be checking for errors from bfd_close (for one
325 thing, on error it does not free all the storage associated
327 make_cleanup_bfd_unref (temp_bfd
);
328 error (_("\"%s\" is not a core dump: %s"),
329 filename
, bfd_errmsg (bfd_get_error ()));
332 /* Looks semi-reasonable. Toss the old core file and work on the
335 do_cleanups (old_chain
);
336 unpush_target (&core_ops
);
338 old_chain
= make_cleanup (core_close_cleanup
, 0 /*ignore*/);
340 core_gdbarch
= gdbarch_from_bfd (core_bfd
);
342 /* Find a suitable core file handler to munch on core_bfd */
343 core_vec
= sniff_core_bfd (core_bfd
);
347 core_data
= XCNEW (struct target_section_table
);
349 /* Find the data section */
350 if (build_section_table (core_bfd
,
351 &core_data
->sections
,
352 &core_data
->sections_end
))
353 error (_("\"%s\": Can't find sections: %s"),
354 bfd_get_filename (core_bfd
), bfd_errmsg (bfd_get_error ()));
356 /* If we have no exec file, try to set the architecture from the
357 core file. We don't do this unconditionally since an exec file
358 typically contains more information that helps us determine the
359 architecture than a core file. */
361 set_gdbarch_from_file (core_bfd
);
363 push_target (&core_ops
);
364 discard_cleanups (old_chain
);
366 /* Do this before acknowledging the inferior, so if
367 post_create_inferior throws (can happen easilly if you're loading
368 a core file with the wrong exec), we aren't left with threads
369 from the previous inferior. */
372 inferior_ptid
= null_ptid
;
374 /* Need to flush the register cache (and the frame cache) from a
375 previous debug session. If inferior_ptid ends up the same as the
376 last debug session --- e.g., b foo; run; gcore core1; step; gcore
377 core2; core core1; core core2 --- then there's potential for
378 get_current_regcache to return the cached regcache of the
379 previous session, and the frame cache being stale. */
380 registers_changed ();
382 /* Build up thread list from BFD sections, and possibly set the
383 current thread to the .reg/NN section matching the .reg
385 bfd_map_over_sections (core_bfd
, add_to_thread_list
,
386 bfd_get_section_by_name (core_bfd
, ".reg"));
388 if (ptid_equal (inferior_ptid
, null_ptid
))
390 /* Either we found no .reg/NN section, and hence we have a
391 non-threaded core (single-threaded, from gdb's perspective),
392 or for some reason add_to_thread_list couldn't determine
393 which was the "main" thread. The latter case shouldn't
394 usually happen, but we're dealing with input here, which can
395 always be broken in different ways. */
396 struct thread_info
*thread
= first_thread_of_process (-1);
400 inferior_appeared (current_inferior (), CORELOW_PID
);
401 inferior_ptid
= pid_to_ptid (CORELOW_PID
);
402 add_thread_silent (inferior_ptid
);
405 switch_to_thread (thread
->ptid
);
408 post_create_inferior (&core_ops
, from_tty
);
410 /* Now go through the target stack looking for threads since there
411 may be a thread_stratum target loaded on top of target core by
412 now. The layer above should claim threads found in the BFD
414 TRY_CATCH (except
, RETURN_MASK_ERROR
)
416 target_update_thread_list ();
419 if (except
.reason
< 0)
420 exception_print (gdb_stderr
, except
);
422 p
= bfd_core_file_failing_command (core_bfd
);
424 printf_filtered (_("Core was generated by `%s'.\n"), p
);
426 /* Clearing any previous state of convenience variables. */
427 clear_exit_convenience_vars ();
429 siggy
= bfd_core_file_failing_signal (core_bfd
);
432 /* If we don't have a CORE_GDBARCH to work with, assume a native
433 core (map gdb_signal from host signals). If we do have
434 CORE_GDBARCH to work with, but no gdb_signal_from_target
435 implementation for that gdbarch, as a fallback measure,
436 assume the host signal mapping. It'll be correct for native
437 cores, but most likely incorrect for cross-cores. */
438 enum gdb_signal sig
= (core_gdbarch
!= NULL
439 && gdbarch_gdb_signal_from_target_p (core_gdbarch
)
440 ? gdbarch_gdb_signal_from_target (core_gdbarch
,
442 : gdb_signal_from_host (siggy
));
444 printf_filtered (_("Program terminated with signal %s, %s.\n"),
445 gdb_signal_to_name (sig
), gdb_signal_to_string (sig
));
447 /* Set the value of the internal variable $_exitsignal,
448 which holds the signal uncaught by the inferior. */
449 set_internalvar_integer (lookup_internalvar ("_exitsignal"),
453 /* Fetch all registers from core file. */
454 target_fetch_registers (get_current_regcache (), -1);
456 /* Now, set up the frame cache, and print the top of stack. */
457 reinit_frame_cache ();
458 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
460 /* Current thread should be NUM 1 but the user does not know that.
461 If a program is single threaded gdb in general does not mention
462 anything about threads. That is why the test is >= 2. */
463 if (thread_count () >= 2)
465 TRY_CATCH (except
, RETURN_MASK_ERROR
)
467 thread_command (NULL
, from_tty
);
469 if (except
.reason
< 0)
470 exception_print (gdb_stderr
, except
);
475 core_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
478 error (_("Too many arguments"));
480 reinit_frame_cache ();
482 printf_filtered (_("No core file now.\n"));
485 /* Try to retrieve registers from a section in core_bfd, and supply
486 them to core_vec->core_read_registers, as the register set numbered
489 If inferior_ptid's lwp member is zero, do the single-threaded
490 thing: look for a section named NAME. If inferior_ptid's lwp
491 member is non-zero, do the multi-threaded thing: look for a section
492 named "NAME/LWP", where LWP is the shortest ASCII decimal
493 representation of inferior_ptid's lwp member.
495 HUMAN_NAME is a human-readable name for the kind of registers the
496 NAME section contains, for use in error messages.
498 If REQUIRED is non-zero, print an error if the core file doesn't
499 have a section by the appropriate name. Otherwise, just do
503 get_core_register_section (struct regcache
*regcache
,
504 const struct regset
*regset
,
508 const char *human_name
,
511 static char *section_name
= NULL
;
512 struct bfd_section
*section
;
516 xfree (section_name
);
518 if (ptid_get_lwp (inferior_ptid
))
519 section_name
= xstrprintf ("%s/%ld", name
,
520 ptid_get_lwp (inferior_ptid
));
522 section_name
= xstrdup (name
);
524 section
= bfd_get_section_by_name (core_bfd
, section_name
);
528 warning (_("Couldn't find %s registers in core file."),
533 size
= bfd_section_size (core_bfd
, section
);
536 warning (_("Section `%s' in core file too small."), section_name
);
539 if (size
!= min_size
&& !(regset
->flags
& REGSET_VARIABLE_SIZE
))
541 warning (_("Unexpected size of section `%s' in core file."),
545 contents
= alloca (size
);
546 if (! bfd_get_section_contents (core_bfd
, section
, contents
,
549 warning (_("Couldn't read %s registers from `%s' section in core file."),
556 regset
->supply_regset (regset
, regcache
, -1, contents
, size
);
560 gdb_assert (core_vec
);
561 core_vec
->core_read_registers (regcache
, contents
, size
, which
,
563 bfd_section_vma (core_bfd
, section
)));
566 /* Callback for get_core_registers that handles a single core file
567 register note section. */
570 get_core_registers_cb (const char *sect_name
, int size
,
571 const struct regset
*regset
,
572 const char *human_name
, void *cb_data
)
574 struct regcache
*regcache
= (struct regcache
*) cb_data
;
577 if (strcmp (sect_name
, ".reg") == 0)
580 if (human_name
== NULL
)
581 human_name
= "general-purpose";
583 else if (strcmp (sect_name
, ".reg2") == 0)
585 if (human_name
== NULL
)
586 human_name
= "floating-point";
589 /* The 'which' parameter is only used when no regset is provided.
590 Thus we just set it to -1. */
591 get_core_register_section (regcache
, regset
, sect_name
,
592 size
, -1, human_name
, required
);
595 /* Get the registers out of a core file. This is the machine-
596 independent part. Fetch_core_registers is the machine-dependent
597 part, typically implemented in the xm-file for each
600 /* We just get all the registers, so we don't use regno. */
603 get_core_registers (struct target_ops
*ops
,
604 struct regcache
*regcache
, int regno
)
607 struct gdbarch
*gdbarch
;
609 if (!(core_gdbarch
&& gdbarch_iterate_over_regset_sections_p (core_gdbarch
))
610 && (core_vec
== NULL
|| core_vec
->core_read_registers
== NULL
))
612 fprintf_filtered (gdb_stderr
,
613 "Can't fetch registers from this type of core file\n");
617 gdbarch
= get_regcache_arch (regcache
);
618 if (gdbarch_iterate_over_regset_sections_p (gdbarch
))
619 gdbarch_iterate_over_regset_sections (gdbarch
,
620 get_core_registers_cb
,
621 (void *) regcache
, NULL
);
624 get_core_register_section (regcache
, NULL
,
625 ".reg", 0, 0, "general-purpose", 1);
626 get_core_register_section (regcache
, NULL
,
627 ".reg2", 0, 2, "floating-point", 0);
630 /* Mark all registers not found in the core as unavailable. */
631 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
632 if (regcache_register_status (regcache
, i
) == REG_UNKNOWN
)
633 regcache_raw_supply (regcache
, i
, NULL
);
637 core_files_info (struct target_ops
*t
)
639 print_section_info (core_data
, core_bfd
);
652 add_to_spuid_list (bfd
*abfd
, asection
*asect
, void *list_p
)
654 struct spuid_list
*list
= list_p
;
655 enum bfd_endian byte_order
656 = bfd_big_endian (abfd
) ? BFD_ENDIAN_BIG
: BFD_ENDIAN_LITTLE
;
659 sscanf (bfd_section_name (abfd
, asect
), "SPU/%d/regs%n", &fd
, &pos
);
663 if (list
->pos
>= list
->offset
&& list
->pos
+ 4 <= list
->offset
+ list
->len
)
665 store_unsigned_integer (list
->buf
+ list
->pos
- list
->offset
,
672 /* Read siginfo data from the core, if possible. Returns -1 on
673 failure. Otherwise, returns the number of bytes read. ABFD is the
674 core file's BFD; READBUF, OFFSET, and LEN are all as specified by
675 the to_xfer_partial interface. */
678 get_core_siginfo (bfd
*abfd
, gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
)
682 const char *name
= ".note.linuxcore.siginfo";
684 if (ptid_get_lwp (inferior_ptid
))
685 section_name
= xstrprintf ("%s/%ld", name
,
686 ptid_get_lwp (inferior_ptid
));
688 section_name
= xstrdup (name
);
690 section
= bfd_get_section_by_name (abfd
, section_name
);
691 xfree (section_name
);
695 if (!bfd_get_section_contents (abfd
, section
, readbuf
, offset
, len
))
701 static enum target_xfer_status
702 core_xfer_partial (struct target_ops
*ops
, enum target_object object
,
703 const char *annex
, gdb_byte
*readbuf
,
704 const gdb_byte
*writebuf
, ULONGEST offset
,
705 ULONGEST len
, ULONGEST
*xfered_len
)
709 case TARGET_OBJECT_MEMORY
:
710 return section_table_xfer_memory_partial (readbuf
, writebuf
,
711 offset
, len
, xfered_len
,
713 core_data
->sections_end
,
716 case TARGET_OBJECT_AUXV
:
719 /* When the aux vector is stored in core file, BFD
720 represents this with a fake section called ".auxv". */
722 struct bfd_section
*section
;
725 section
= bfd_get_section_by_name (core_bfd
, ".auxv");
727 return TARGET_XFER_E_IO
;
729 size
= bfd_section_size (core_bfd
, section
);
731 return TARGET_XFER_EOF
;
737 return TARGET_XFER_EOF
;
738 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
739 (file_ptr
) offset
, size
))
741 warning (_("Couldn't read NT_AUXV note in core file."));
742 return TARGET_XFER_E_IO
;
745 *xfered_len
= (ULONGEST
) size
;
746 return TARGET_XFER_OK
;
748 return TARGET_XFER_E_IO
;
750 case TARGET_OBJECT_WCOOKIE
:
753 /* When the StackGhost cookie is stored in core file, BFD
754 represents this with a fake section called
757 struct bfd_section
*section
;
760 section
= bfd_get_section_by_name (core_bfd
, ".wcookie");
762 return TARGET_XFER_E_IO
;
764 size
= bfd_section_size (core_bfd
, section
);
766 return TARGET_XFER_EOF
;
772 return TARGET_XFER_EOF
;
773 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
774 (file_ptr
) offset
, size
))
776 warning (_("Couldn't read StackGhost cookie in core file."));
777 return TARGET_XFER_E_IO
;
780 *xfered_len
= (ULONGEST
) size
;
781 return TARGET_XFER_OK
;
784 return TARGET_XFER_E_IO
;
786 case TARGET_OBJECT_LIBRARIES
:
788 && gdbarch_core_xfer_shared_libraries_p (core_gdbarch
))
791 return TARGET_XFER_E_IO
;
794 *xfered_len
= gdbarch_core_xfer_shared_libraries (core_gdbarch
,
798 if (*xfered_len
== 0)
799 return TARGET_XFER_EOF
;
801 return TARGET_XFER_OK
;
806 case TARGET_OBJECT_LIBRARIES_AIX
:
808 && gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch
))
811 return TARGET_XFER_E_IO
;
815 = gdbarch_core_xfer_shared_libraries_aix (core_gdbarch
,
819 if (*xfered_len
== 0)
820 return TARGET_XFER_EOF
;
822 return TARGET_XFER_OK
;
827 case TARGET_OBJECT_SPU
:
828 if (readbuf
&& annex
)
830 /* When the SPU contexts are stored in a core file, BFD
831 represents this with a fake section called
834 struct bfd_section
*section
;
836 char sectionstr
[100];
838 xsnprintf (sectionstr
, sizeof sectionstr
, "SPU/%s", annex
);
840 section
= bfd_get_section_by_name (core_bfd
, sectionstr
);
842 return TARGET_XFER_E_IO
;
844 size
= bfd_section_size (core_bfd
, section
);
846 return TARGET_XFER_EOF
;
852 return TARGET_XFER_EOF
;
853 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
854 (file_ptr
) offset
, size
))
856 warning (_("Couldn't read SPU section in core file."));
857 return TARGET_XFER_E_IO
;
860 *xfered_len
= (ULONGEST
) size
;
861 return TARGET_XFER_OK
;
865 /* NULL annex requests list of all present spuids. */
866 struct spuid_list list
;
869 list
.offset
= offset
;
873 bfd_map_over_sections (core_bfd
, add_to_spuid_list
, &list
);
875 if (list
.written
== 0)
876 return TARGET_XFER_EOF
;
879 *xfered_len
= (ULONGEST
) list
.written
;
880 return TARGET_XFER_OK
;
883 return TARGET_XFER_E_IO
;
885 case TARGET_OBJECT_SIGNAL_INFO
:
888 LONGEST l
= get_core_siginfo (core_bfd
, readbuf
, offset
, len
);
893 return TARGET_XFER_OK
;
896 return TARGET_XFER_E_IO
;
899 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
,
901 writebuf
, offset
, len
,
907 /* If mourn is being called in all the right places, this could be say
908 `gdb internal error' (since generic_mourn calls
909 breakpoint_init_inferior). */
912 ignore (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
913 struct bp_target_info
*bp_tgt
)
919 /* Okay, let's be honest: threads gleaned from a core file aren't
920 exactly lively, are they? On the other hand, if we don't claim
921 that each & every one is alive, then we don't get any of them
922 to appear in an "info thread" command, which is quite a useful
926 core_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
931 /* Ask the current architecture what it knows about this core file.
932 That will be used, in turn, to pick a better architecture. This
933 wrapper could be avoided if targets got a chance to specialize
936 static const struct target_desc
*
937 core_read_description (struct target_ops
*target
)
939 if (core_gdbarch
&& gdbarch_core_read_description_p (core_gdbarch
))
941 const struct target_desc
*result
;
943 result
= gdbarch_core_read_description (core_gdbarch
,
949 return target
->beneath
->to_read_description (target
->beneath
);
953 core_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
956 struct inferior
*inf
;
959 /* The preferred way is to have a gdbarch/OS specific
962 && gdbarch_core_pid_to_str_p (core_gdbarch
))
963 return gdbarch_core_pid_to_str (core_gdbarch
, ptid
);
965 /* Otherwise, if we don't have one, we'll just fallback to
966 "process", with normal_pid_to_str. */
968 /* Try the LWPID field first. */
969 pid
= ptid_get_lwp (ptid
);
971 return normal_pid_to_str (pid_to_ptid (pid
));
973 /* Otherwise, this isn't a "threaded" core -- use the PID field, but
974 only if it isn't a fake PID. */
975 inf
= find_inferior_ptid (ptid
);
976 if (inf
!= NULL
&& !inf
->fake_pid_p
)
977 return normal_pid_to_str (ptid
);
979 /* No luck. We simply don't have a valid PID to print. */
980 xsnprintf (buf
, sizeof buf
, "<main task>");
985 core_has_memory (struct target_ops
*ops
)
987 return (core_bfd
!= NULL
);
991 core_has_stack (struct target_ops
*ops
)
993 return (core_bfd
!= NULL
);
997 core_has_registers (struct target_ops
*ops
)
999 return (core_bfd
!= NULL
);
1002 /* Implement the to_info_proc method. */
1005 core_info_proc (struct target_ops
*ops
, const char *args
,
1006 enum info_proc_what request
)
1008 struct gdbarch
*gdbarch
= get_current_arch ();
1010 /* Since this is the core file target, call the 'core_info_proc'
1011 method on gdbarch, not 'info_proc'. */
1012 if (gdbarch_core_info_proc_p (gdbarch
))
1013 gdbarch_core_info_proc (gdbarch
, args
, request
);
1016 /* Fill in core_ops with its defined operations and properties. */
1019 init_core_ops (void)
1021 core_ops
.to_shortname
= "core";
1022 core_ops
.to_longname
= "Local core dump file";
1024 "Use a core file as a target. Specify the filename of the core file.";
1025 core_ops
.to_open
= core_open
;
1026 core_ops
.to_close
= core_close
;
1027 core_ops
.to_detach
= core_detach
;
1028 core_ops
.to_fetch_registers
= get_core_registers
;
1029 core_ops
.to_xfer_partial
= core_xfer_partial
;
1030 core_ops
.to_files_info
= core_files_info
;
1031 core_ops
.to_insert_breakpoint
= ignore
;
1032 core_ops
.to_remove_breakpoint
= ignore
;
1033 core_ops
.to_thread_alive
= core_thread_alive
;
1034 core_ops
.to_read_description
= core_read_description
;
1035 core_ops
.to_pid_to_str
= core_pid_to_str
;
1036 core_ops
.to_stratum
= process_stratum
;
1037 core_ops
.to_has_memory
= core_has_memory
;
1038 core_ops
.to_has_stack
= core_has_stack
;
1039 core_ops
.to_has_registers
= core_has_registers
;
1040 core_ops
.to_info_proc
= core_info_proc
;
1041 core_ops
.to_magic
= OPS_MAGIC
;
1044 internal_error (__FILE__
, __LINE__
,
1045 _("init_core_ops: core target already exists (\"%s\")."),
1046 core_target
->to_longname
);
1047 core_target
= &core_ops
;
1051 _initialize_corelow (void)
1055 add_target_with_completer (&core_ops
, filename_completer
);