1 /***************************************************************************
2 * Copyright (C) 2011 by Broadcom Corporation *
3 * Evan Hunter - ehunter@broadcom.com *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
26 #include "target/target.h"
27 #include "helper/log.h"
28 #include "server/gdb_server.h"
30 static void hex_to_str(char *dst
, char *hex_src
);
33 extern struct rtos_type FreeRTOS_rtos
;
34 extern struct rtos_type ThreadX_rtos
;
35 extern struct rtos_type eCos_rtos
;
36 extern struct rtos_type Linux_os
;
37 extern struct rtos_type ChibiOS_rtos
;
39 static struct rtos_type
*rtos_types
[] = {
48 int rtos_thread_packet(struct connection
*connection
, char *packet
, int packet_size
);
50 int rtos_smp_init(struct target
*target
)
52 if (target
->rtos
->type
->smp_init
)
53 return target
->rtos
->type
->smp_init(target
);
54 return ERROR_TARGET_INIT_FAILED
;
57 static int os_alloc(struct target
*target
, struct rtos_type
*ostype
)
59 struct rtos
*os
= target
->rtos
= calloc(1, sizeof(struct rtos
));
65 os
->current_threadid
= -1;
66 os
->current_thread
= 0;
70 /* RTOS drivers can override the packet handler in _create(). */
71 os
->gdb_thread_packet
= rtos_thread_packet
;
76 static void os_free(struct target
*target
)
81 if (target
->rtos
->symbols
)
82 free(target
->rtos
->symbols
);
88 static int os_alloc_create(struct target
*target
, struct rtos_type
*ostype
)
90 int ret
= os_alloc(target
, ostype
);
93 ret
= target
->rtos
->type
->create(target
);
101 int rtos_create(Jim_GetOptInfo
*goi
, struct target
*target
)
107 if (!goi
->isconfigure
&& goi
->argc
!= 0) {
108 Jim_WrongNumArgs(goi
->interp
, goi
->argc
, goi
->argv
, "NO PARAMS");
114 Jim_GetOpt_String(goi
, &cp
, NULL
);
116 if (0 == strcmp(cp
, "auto")) {
117 /* Auto detect tries to look up all symbols for each RTOS,
118 * and runs the RTOS driver's _detect() function when GDB
119 * finds all symbols for any RTOS. See rtos_qsymbol(). */
120 target
->rtos_auto_detect
= true;
122 /* rtos_qsymbol() will iterate over all RTOSes. Allocate
123 * target->rtos here, and set it to the first RTOS type. */
124 return os_alloc(target
, rtos_types
[0]);
127 for (x
= 0; rtos_types
[x
]; x
++)
128 if (0 == strcmp(cp
, rtos_types
[x
]->name
))
129 return os_alloc_create(target
, rtos_types
[x
]);
131 Jim_SetResultFormatted(goi
->interp
, "Unknown RTOS type %s, try one of: ", cp
);
132 res
= Jim_GetResult(goi
->interp
);
133 for (x
= 0; rtos_types
[x
]; x
++)
134 Jim_AppendStrings(goi
->interp
, res
, rtos_types
[x
]->name
, ", ", NULL
);
135 Jim_AppendStrings(goi
->interp
, res
, " or auto", NULL
);
140 int gdb_thread_packet(struct connection
*connection
, char *packet
, int packet_size
)
142 struct target
*target
= get_target_from_connection(connection
);
143 if (target
->rtos
== NULL
)
144 return rtos_thread_packet(connection
, packet
, packet_size
); /* thread not
146 return target
->rtos
->gdb_thread_packet(connection
, packet
, packet_size
);
149 static char *next_symbol(struct rtos
*os
, char *cur_symbol
, uint64_t cur_addr
)
151 symbol_table_elem_t
*s
;
154 os
->type
->get_symbol_list_to_lookup(&os
->symbols
);
157 return os
->symbols
[0].symbol_name
;
159 for (s
= os
->symbols
; s
->symbol_name
; s
++)
160 if (!strcmp(s
->symbol_name
, cur_symbol
)) {
161 s
->address
= cur_addr
;
163 return s
->symbol_name
;
169 /* rtos_qsymbol() processes and replies to all qSymbol packets from GDB.
171 * GDB sends a qSymbol:: packet (empty address, empty name) to notify
172 * that it can now answer qSymbol::hexcodedname queries, to look up symbols.
174 * If the qSymbol packet has no address that means GDB did not find the
175 * symbol, in which case auto-detect will move on to try the next RTOS.
177 * rtos_qsymbol() then calls the next_symbol() helper function, which
178 * iterates over symbol names for the current RTOS until it finds the
179 * symbol in the received GDB packet, and then returns the next entry
180 * in the list of symbols.
182 * If GDB replied about the last symbol for the RTOS and the RTOS was
183 * specified explicitly, then no further symbol lookup is done. When
184 * auto-detecting, the RTOS driver _detect() function must return success.
186 * rtos_qsymbol() returns 1 if an RTOS has been detected, or 0 otherwise.
188 int rtos_qsymbol(struct connection
*connection
, char *packet
, int packet_size
)
190 int rtos_detected
= 0;
193 char reply
[GDB_BUFFER_SIZE
], cur_sym
[GDB_BUFFER_SIZE
/ 2] = "", *next_sym
;
194 struct target
*target
= get_target_from_connection(connection
);
195 struct rtos
*os
= target
->rtos
;
197 reply_len
= sprintf(reply
, "OK");
202 /* Decode any symbol name in the packet*/
203 hex_to_str(cur_sym
, strchr(packet
+ 8, ':') + 1);
205 if ((strcmp(packet
, "qSymbol::") != 0) && /* GDB is not offering symbol lookup for the first time */
206 (!sscanf(packet
, "qSymbol:%" SCNx64
":", &addr
))) { /* GDB did not found an address for a symbol */
207 /* GDB could not find an address for the previous symbol */
208 if (!target
->rtos_auto_detect
) {
209 LOG_WARNING("RTOS %s not detected. (GDB could not find symbol \'%s\')", os
->type
->name
, cur_sym
);
212 /* Autodetecting RTOS - try next RTOS */
213 if (!rtos_try_next(target
))
216 /* Next RTOS selected - invalidate current symbol */
221 next_sym
= next_symbol(os
, cur_sym
, addr
);
224 /* No more symbols need looking up */
226 if (!target
->rtos_auto_detect
) {
231 if (os
->type
->detect_rtos(target
)) {
232 LOG_INFO("Auto-detected RTOS: %s", os
->type
->name
);
236 LOG_WARNING("No RTOS could be auto-detected!");
241 if (8 + (strlen(next_sym
) * 2) + 1 > sizeof(reply
)) {
242 LOG_ERROR("ERROR: RTOS symbol '%s' name is too long for GDB!", next_sym
);
246 reply_len
= sprintf(reply
, "qSymbol:");
247 reply_len
+= str_to_hex(reply
+ reply_len
, next_sym
);
250 gdb_put_packet(connection
, reply
, reply_len
);
251 return rtos_detected
;
254 int rtos_thread_packet(struct connection
*connection
, char *packet
, int packet_size
)
256 struct target
*target
= get_target_from_connection(connection
);
258 if (strncmp(packet
, "qThreadExtraInfo,", 17) == 0) {
259 if ((target
->rtos
!= NULL
) && (target
->rtos
->thread_details
!= NULL
) &&
260 (target
->rtos
->thread_count
!= 0)) {
261 threadid_t threadid
= 0;
263 sscanf(packet
, "qThreadExtraInfo,%" SCNx64
, &threadid
);
265 if ((target
->rtos
!= NULL
) && (target
->rtos
->thread_details
!= NULL
)) {
267 for (thread_num
= 0; thread_num
< target
->rtos
->thread_count
; thread_num
++) {
268 if (target
->rtos
->thread_details
[thread_num
].threadid
== threadid
) {
269 if (target
->rtos
->thread_details
[thread_num
].exists
)
275 gdb_put_packet(connection
, "E01", 3); /* thread not found */
279 struct thread_detail
*detail
= &target
->rtos
->thread_details
[found
];
282 if (detail
->display_str
!= NULL
)
283 str_size
+= strlen(detail
->display_str
);
284 if (detail
->thread_name_str
!= NULL
)
285 str_size
+= strlen(detail
->thread_name_str
);
286 if (detail
->extra_info_str
!= NULL
)
287 str_size
+= strlen(detail
->extra_info_str
);
289 char *tmp_str
= (char *) malloc(str_size
+ 7);
290 char *tmp_str_ptr
= tmp_str
;
292 if (detail
->display_str
!= NULL
)
293 tmp_str_ptr
+= sprintf(tmp_str_ptr
, "%s", detail
->display_str
);
294 if (detail
->thread_name_str
!= NULL
) {
295 if (tmp_str_ptr
!= tmp_str
)
296 tmp_str_ptr
+= sprintf(tmp_str_ptr
, " : ");
297 tmp_str_ptr
+= sprintf(tmp_str_ptr
, "%s", detail
->thread_name_str
);
299 if (detail
->extra_info_str
!= NULL
) {
300 if (tmp_str_ptr
!= tmp_str
)
301 tmp_str_ptr
+= sprintf(tmp_str_ptr
, " : ");
303 sprintf(tmp_str_ptr
, " : %s", detail
->extra_info_str
);
306 assert(strlen(tmp_str
) ==
307 (size_t) (tmp_str_ptr
- tmp_str
));
309 char *hex_str
= (char *) malloc(strlen(tmp_str
)*2 + 1);
310 str_to_hex(hex_str
, tmp_str
);
312 gdb_put_packet(connection
, hex_str
, strlen(hex_str
));
318 gdb_put_packet(connection
, "", 0);
320 } else if (strncmp(packet
, "qSymbol", 7) == 0) {
321 if (rtos_qsymbol(connection
, packet
, packet_size
) == 1) {
322 target
->rtos_auto_detect
= false;
323 target
->rtos
->type
->create(target
);
324 target
->rtos
->type
->update_threads(target
->rtos
);
327 } else if (strncmp(packet
, "qfThreadInfo", 12) == 0) {
329 if ((target
->rtos
!= NULL
) && (target
->rtos
->thread_count
!= 0)) {
331 char *out_str
= (char *) malloc(17 * target
->rtos
->thread_count
+ 5);
332 char *tmp_str
= out_str
;
333 tmp_str
+= sprintf(tmp_str
, "m");
334 for (i
= 0; i
< target
->rtos
->thread_count
; i
++) {
336 tmp_str
+= sprintf(tmp_str
, ",");
337 tmp_str
+= sprintf(tmp_str
, "%016" PRIx64
,
338 target
->rtos
->thread_details
[i
].threadid
);
341 gdb_put_packet(connection
, out_str
, strlen(out_str
));
343 gdb_put_packet(connection
, "", 0);
346 } else if (strncmp(packet
, "qsThreadInfo", 12) == 0) {
347 gdb_put_packet(connection
, "l", 1);
349 } else if (strncmp(packet
, "qAttached", 9) == 0) {
350 gdb_put_packet(connection
, "1", 1);
352 } else if (strncmp(packet
, "qOffsets", 8) == 0) {
353 char offsets
[] = "Text=0;Data=0;Bss=0";
354 gdb_put_packet(connection
, offsets
, sizeof(offsets
)-1);
356 } else if (strncmp(packet
, "qCRC:", 5) == 0) {
357 /* make sure we check this before "qC" packet below
358 * otherwise it gets incorrectly handled */
359 return GDB_THREAD_PACKET_NOT_CONSUMED
;
360 } else if (strncmp(packet
, "qC", 2) == 0) {
361 if (target
->rtos
!= NULL
) {
364 size
= snprintf(buffer
, 19, "QC%016" PRIx64
, target
->rtos
->current_thread
);
365 gdb_put_packet(connection
, buffer
, size
);
367 gdb_put_packet(connection
, "QC0", 3);
369 } else if (packet
[0] == 'T') { /* Is thread alive? */
372 sscanf(packet
, "T%" SCNx64
, &threadid
);
373 if ((target
->rtos
!= NULL
) && (target
->rtos
->thread_details
!= NULL
)) {
375 for (thread_num
= 0; thread_num
< target
->rtos
->thread_count
; thread_num
++) {
376 if (target
->rtos
->thread_details
[thread_num
].threadid
== threadid
) {
377 if (target
->rtos
->thread_details
[thread_num
].exists
)
383 gdb_put_packet(connection
, "OK", 2); /* thread alive */
385 gdb_put_packet(connection
, "E01", 3); /* thread not found */
387 } else if (packet
[0] == 'H') { /* Set current thread ( 'c' for step and continue, 'g' for
388 * all other operations ) */
389 if ((packet
[1] == 'g') && (target
->rtos
!= NULL
))
390 sscanf(packet
, "Hg%16" SCNx64
, &target
->rtos
->current_threadid
);
391 gdb_put_packet(connection
, "OK", 2);
395 return GDB_THREAD_PACKET_NOT_CONSUMED
;
398 int rtos_get_gdb_reg_list(struct connection
*connection
)
400 struct target
*target
= get_target_from_connection(connection
);
401 int64_t current_threadid
= target
->rtos
->current_threadid
;
402 if ((target
->rtos
!= NULL
) && (current_threadid
!= -1) &&
403 (current_threadid
!= 0) &&
404 ((current_threadid
!= target
->rtos
->current_thread
) ||
405 (target
->smp
))) { /* in smp several current thread are possible */
407 target
->rtos
->type
->get_thread_reg_list(target
->rtos
,
411 if (hex_reg_list
!= NULL
) {
412 gdb_put_packet(connection
, hex_reg_list
, strlen(hex_reg_list
));
420 int rtos_generic_stack_read(struct target
*target
,
421 const struct rtos_register_stacking
*stacking
,
427 int64_t new_stack_ptr
;
431 if (stack_ptr
== 0) {
432 LOG_ERROR("Error: null stack pointer in thread");
436 uint8_t *stack_data
= (uint8_t *) malloc(stacking
->stack_registers_size
);
437 uint32_t address
= stack_ptr
;
439 if (stacking
->stack_growth_direction
== 1)
440 address
-= stacking
->stack_registers_size
;
441 retval
= target_read_buffer(target
, address
, stacking
->stack_registers_size
, stack_data
);
442 if (retval
!= ERROR_OK
) {
443 LOG_ERROR("Error reading stack frame from FreeRTOS thread");
447 LOG_OUTPUT("Stack Data :");
448 for (i
= 0; i
< stacking
->stack_registers_size
; i
++)
449 LOG_OUTPUT("%02X", stack_data
[i
]);
452 for (i
= 0; i
< stacking
->num_output_registers
; i
++)
453 list_size
+= stacking
->register_offsets
[i
].width_bits
/8;
454 *hex_reg_list
= (char *)malloc(list_size
*2 + 1);
455 tmp_str_ptr
= *hex_reg_list
;
456 new_stack_ptr
= stack_ptr
- stacking
->stack_growth_direction
*
457 stacking
->stack_registers_size
;
458 if (stacking
->stack_alignment
!= 0) {
459 /* Align new stack pointer to x byte boundary */
461 (new_stack_ptr
& (~((int64_t) stacking
->stack_alignment
- 1))) +
462 ((stacking
->stack_growth_direction
== -1) ? stacking
->stack_alignment
: 0);
464 for (i
= 0; i
< stacking
->num_output_registers
; i
++) {
466 for (j
= 0; j
< stacking
->register_offsets
[i
].width_bits
/8; j
++) {
467 if (stacking
->register_offsets
[i
].offset
== -1)
468 tmp_str_ptr
+= sprintf(tmp_str_ptr
, "%02x", 0);
469 else if (stacking
->register_offsets
[i
].offset
== -2)
470 tmp_str_ptr
+= sprintf(tmp_str_ptr
, "%02x",
471 ((uint8_t *)&new_stack_ptr
)[j
]);
473 tmp_str_ptr
+= sprintf(tmp_str_ptr
, "%02x",
474 stack_data
[stacking
->register_offsets
[i
].offset
+ j
]);
477 /* LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list); */
481 int rtos_try_next(struct target
*target
)
483 struct rtos
*os
= target
->rtos
;
484 struct rtos_type
**type
= rtos_types
;
489 while (*type
&& os
->type
!= *type
)
492 if (!*type
|| !*(++type
))
504 static void hex_to_str(char *dst
, char *hex_src
)
509 while (hex_src
[src_pos
] != '\x00') {
510 char hex_char
= hex_src
[src_pos
];
514 10 : (hex_char
>= 'A') ? hex_char
-'A'+10 : hex_char
-'0';
515 if (0 == (src_pos
& 0x01)) {
516 dst
[dst_pos
] = hex_digit_val
;
519 ((unsigned char *)dst
)[dst_pos
] <<= 4;
520 ((unsigned char *)dst
)[dst_pos
] += hex_digit_val
;
528 int str_to_hex(char *hex_dst
, char *src
)
530 char *posptr
= hex_dst
;
532 for (i
= 0; i
< strlen(src
); i
++)
533 posptr
+= sprintf(posptr
, "%02x", (unsigned char)src
[i
]);
534 return posptr
- hex_dst
;
537 int rtos_update_threads(struct target
*target
)
539 if ((target
->rtos
!= NULL
) && (target
->rtos
->type
!= NULL
))
540 target
->rtos
->type
->update_threads(target
->rtos
);