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Commit | Line | Data |
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b4608c04 FB |
1 | /* |
2 | * gdb server stub | |
5fafdf24 | 3 | * |
3475187d | 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
b4608c04 FB |
5 | * |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
b4608c04 | 18 | */ |
978efd6a | 19 | #include "config.h" |
56aebc89 | 20 | #include "qemu-common.h" |
1fddef4b FB |
21 | #ifdef CONFIG_USER_ONLY |
22 | #include <stdlib.h> | |
23 | #include <stdio.h> | |
24 | #include <stdarg.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <unistd.h> | |
978efd6a | 28 | #include <fcntl.h> |
1fddef4b FB |
29 | |
30 | #include "qemu.h" | |
31 | #else | |
83c9089e | 32 | #include "monitor/monitor.h" |
dccfcd0e | 33 | #include "sysemu/char.h" |
9c17d615 | 34 | #include "sysemu/sysemu.h" |
022c62cb | 35 | #include "exec/gdbstub.h" |
1fddef4b | 36 | #endif |
67b915a5 | 37 | |
56aebc89 PB |
38 | #define MAX_PACKET_LENGTH 4096 |
39 | ||
2b41f10e | 40 | #include "cpu.h" |
1de7afc9 | 41 | #include "qemu/sockets.h" |
9c17d615 | 42 | #include "sysemu/kvm.h" |
ca587a8e | 43 | |
f3659eee AF |
44 | static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr, |
45 | uint8_t *buf, int len, bool is_write) | |
44520db1 | 46 | { |
f3659eee AF |
47 | CPUClass *cc = CPU_GET_CLASS(cpu); |
48 | ||
49 | if (cc->memory_rw_debug) { | |
50 | return cc->memory_rw_debug(cpu, addr, buf, len, is_write); | |
51 | } | |
52 | return cpu_memory_rw_debug(cpu, addr, buf, len, is_write); | |
44520db1 | 53 | } |
ca587a8e AJ |
54 | |
55 | enum { | |
56 | GDB_SIGNAL_0 = 0, | |
57 | GDB_SIGNAL_INT = 2, | |
425189a8 | 58 | GDB_SIGNAL_QUIT = 3, |
ca587a8e | 59 | GDB_SIGNAL_TRAP = 5, |
425189a8 JK |
60 | GDB_SIGNAL_ABRT = 6, |
61 | GDB_SIGNAL_ALRM = 14, | |
62 | GDB_SIGNAL_IO = 23, | |
63 | GDB_SIGNAL_XCPU = 24, | |
ca587a8e AJ |
64 | GDB_SIGNAL_UNKNOWN = 143 |
65 | }; | |
66 | ||
67 | #ifdef CONFIG_USER_ONLY | |
68 | ||
69 | /* Map target signal numbers to GDB protocol signal numbers and vice | |
70 | * versa. For user emulation's currently supported systems, we can | |
71 | * assume most signals are defined. | |
72 | */ | |
73 | ||
74 | static int gdb_signal_table[] = { | |
75 | 0, | |
76 | TARGET_SIGHUP, | |
77 | TARGET_SIGINT, | |
78 | TARGET_SIGQUIT, | |
79 | TARGET_SIGILL, | |
80 | TARGET_SIGTRAP, | |
81 | TARGET_SIGABRT, | |
82 | -1, /* SIGEMT */ | |
83 | TARGET_SIGFPE, | |
84 | TARGET_SIGKILL, | |
85 | TARGET_SIGBUS, | |
86 | TARGET_SIGSEGV, | |
87 | TARGET_SIGSYS, | |
88 | TARGET_SIGPIPE, | |
89 | TARGET_SIGALRM, | |
90 | TARGET_SIGTERM, | |
91 | TARGET_SIGURG, | |
92 | TARGET_SIGSTOP, | |
93 | TARGET_SIGTSTP, | |
94 | TARGET_SIGCONT, | |
95 | TARGET_SIGCHLD, | |
96 | TARGET_SIGTTIN, | |
97 | TARGET_SIGTTOU, | |
98 | TARGET_SIGIO, | |
99 | TARGET_SIGXCPU, | |
100 | TARGET_SIGXFSZ, | |
101 | TARGET_SIGVTALRM, | |
102 | TARGET_SIGPROF, | |
103 | TARGET_SIGWINCH, | |
104 | -1, /* SIGLOST */ | |
105 | TARGET_SIGUSR1, | |
106 | TARGET_SIGUSR2, | |
c72d5bf8 | 107 | #ifdef TARGET_SIGPWR |
ca587a8e | 108 | TARGET_SIGPWR, |
c72d5bf8 BS |
109 | #else |
110 | -1, | |
111 | #endif | |
ca587a8e AJ |
112 | -1, /* SIGPOLL */ |
113 | -1, | |
114 | -1, | |
115 | -1, | |
116 | -1, | |
117 | -1, | |
118 | -1, | |
119 | -1, | |
120 | -1, | |
121 | -1, | |
122 | -1, | |
123 | -1, | |
c72d5bf8 | 124 | #ifdef __SIGRTMIN |
ca587a8e AJ |
125 | __SIGRTMIN + 1, |
126 | __SIGRTMIN + 2, | |
127 | __SIGRTMIN + 3, | |
128 | __SIGRTMIN + 4, | |
129 | __SIGRTMIN + 5, | |
130 | __SIGRTMIN + 6, | |
131 | __SIGRTMIN + 7, | |
132 | __SIGRTMIN + 8, | |
133 | __SIGRTMIN + 9, | |
134 | __SIGRTMIN + 10, | |
135 | __SIGRTMIN + 11, | |
136 | __SIGRTMIN + 12, | |
137 | __SIGRTMIN + 13, | |
138 | __SIGRTMIN + 14, | |
139 | __SIGRTMIN + 15, | |
140 | __SIGRTMIN + 16, | |
141 | __SIGRTMIN + 17, | |
142 | __SIGRTMIN + 18, | |
143 | __SIGRTMIN + 19, | |
144 | __SIGRTMIN + 20, | |
145 | __SIGRTMIN + 21, | |
146 | __SIGRTMIN + 22, | |
147 | __SIGRTMIN + 23, | |
148 | __SIGRTMIN + 24, | |
149 | __SIGRTMIN + 25, | |
150 | __SIGRTMIN + 26, | |
151 | __SIGRTMIN + 27, | |
152 | __SIGRTMIN + 28, | |
153 | __SIGRTMIN + 29, | |
154 | __SIGRTMIN + 30, | |
155 | __SIGRTMIN + 31, | |
156 | -1, /* SIGCANCEL */ | |
157 | __SIGRTMIN, | |
158 | __SIGRTMIN + 32, | |
159 | __SIGRTMIN + 33, | |
160 | __SIGRTMIN + 34, | |
161 | __SIGRTMIN + 35, | |
162 | __SIGRTMIN + 36, | |
163 | __SIGRTMIN + 37, | |
164 | __SIGRTMIN + 38, | |
165 | __SIGRTMIN + 39, | |
166 | __SIGRTMIN + 40, | |
167 | __SIGRTMIN + 41, | |
168 | __SIGRTMIN + 42, | |
169 | __SIGRTMIN + 43, | |
170 | __SIGRTMIN + 44, | |
171 | __SIGRTMIN + 45, | |
172 | __SIGRTMIN + 46, | |
173 | __SIGRTMIN + 47, | |
174 | __SIGRTMIN + 48, | |
175 | __SIGRTMIN + 49, | |
176 | __SIGRTMIN + 50, | |
177 | __SIGRTMIN + 51, | |
178 | __SIGRTMIN + 52, | |
179 | __SIGRTMIN + 53, | |
180 | __SIGRTMIN + 54, | |
181 | __SIGRTMIN + 55, | |
182 | __SIGRTMIN + 56, | |
183 | __SIGRTMIN + 57, | |
184 | __SIGRTMIN + 58, | |
185 | __SIGRTMIN + 59, | |
186 | __SIGRTMIN + 60, | |
187 | __SIGRTMIN + 61, | |
188 | __SIGRTMIN + 62, | |
189 | __SIGRTMIN + 63, | |
190 | __SIGRTMIN + 64, | |
191 | __SIGRTMIN + 65, | |
192 | __SIGRTMIN + 66, | |
193 | __SIGRTMIN + 67, | |
194 | __SIGRTMIN + 68, | |
195 | __SIGRTMIN + 69, | |
196 | __SIGRTMIN + 70, | |
197 | __SIGRTMIN + 71, | |
198 | __SIGRTMIN + 72, | |
199 | __SIGRTMIN + 73, | |
200 | __SIGRTMIN + 74, | |
201 | __SIGRTMIN + 75, | |
202 | __SIGRTMIN + 76, | |
203 | __SIGRTMIN + 77, | |
204 | __SIGRTMIN + 78, | |
205 | __SIGRTMIN + 79, | |
206 | __SIGRTMIN + 80, | |
207 | __SIGRTMIN + 81, | |
208 | __SIGRTMIN + 82, | |
209 | __SIGRTMIN + 83, | |
210 | __SIGRTMIN + 84, | |
211 | __SIGRTMIN + 85, | |
212 | __SIGRTMIN + 86, | |
213 | __SIGRTMIN + 87, | |
214 | __SIGRTMIN + 88, | |
215 | __SIGRTMIN + 89, | |
216 | __SIGRTMIN + 90, | |
217 | __SIGRTMIN + 91, | |
218 | __SIGRTMIN + 92, | |
219 | __SIGRTMIN + 93, | |
220 | __SIGRTMIN + 94, | |
221 | __SIGRTMIN + 95, | |
222 | -1, /* SIGINFO */ | |
223 | -1, /* UNKNOWN */ | |
224 | -1, /* DEFAULT */ | |
225 | -1, | |
226 | -1, | |
227 | -1, | |
228 | -1, | |
229 | -1, | |
230 | -1 | |
c72d5bf8 | 231 | #endif |
ca587a8e | 232 | }; |
8f447cc7 | 233 | #else |
ca587a8e AJ |
234 | /* In system mode we only need SIGINT and SIGTRAP; other signals |
235 | are not yet supported. */ | |
236 | ||
237 | enum { | |
238 | TARGET_SIGINT = 2, | |
239 | TARGET_SIGTRAP = 5 | |
240 | }; | |
241 | ||
242 | static int gdb_signal_table[] = { | |
243 | -1, | |
244 | -1, | |
245 | TARGET_SIGINT, | |
246 | -1, | |
247 | -1, | |
248 | TARGET_SIGTRAP | |
249 | }; | |
250 | #endif | |
251 | ||
252 | #ifdef CONFIG_USER_ONLY | |
253 | static int target_signal_to_gdb (int sig) | |
254 | { | |
255 | int i; | |
256 | for (i = 0; i < ARRAY_SIZE (gdb_signal_table); i++) | |
257 | if (gdb_signal_table[i] == sig) | |
258 | return i; | |
259 | return GDB_SIGNAL_UNKNOWN; | |
260 | } | |
8f447cc7 | 261 | #endif |
b4608c04 | 262 | |
ca587a8e AJ |
263 | static int gdb_signal_to_target (int sig) |
264 | { | |
265 | if (sig < ARRAY_SIZE (gdb_signal_table)) | |
266 | return gdb_signal_table[sig]; | |
267 | else | |
268 | return -1; | |
269 | } | |
270 | ||
4abe615b | 271 | //#define DEBUG_GDB |
b4608c04 | 272 | |
56aebc89 PB |
273 | typedef struct GDBRegisterState { |
274 | int base_reg; | |
275 | int num_regs; | |
276 | gdb_reg_cb get_reg; | |
277 | gdb_reg_cb set_reg; | |
278 | const char *xml; | |
279 | struct GDBRegisterState *next; | |
280 | } GDBRegisterState; | |
281 | ||
858693c6 | 282 | enum RSState { |
36556b20 | 283 | RS_INACTIVE, |
858693c6 FB |
284 | RS_IDLE, |
285 | RS_GETLINE, | |
286 | RS_CHKSUM1, | |
287 | RS_CHKSUM2, | |
288 | }; | |
858693c6 | 289 | typedef struct GDBState { |
2e0f2cfb AF |
290 | CPUState *c_cpu; /* current CPU for step/continue ops */ |
291 | CPUState *g_cpu; /* current CPU for other ops */ | |
52f34623 | 292 | CPUState *query_cpu; /* for q{f|s}ThreadInfo */ |
41625033 | 293 | enum RSState state; /* parsing state */ |
56aebc89 | 294 | char line_buf[MAX_PACKET_LENGTH]; |
858693c6 FB |
295 | int line_buf_index; |
296 | int line_csum; | |
56aebc89 | 297 | uint8_t last_packet[MAX_PACKET_LENGTH + 4]; |
4046d913 | 298 | int last_packet_len; |
1f487ee9 | 299 | int signal; |
41625033 | 300 | #ifdef CONFIG_USER_ONLY |
4046d913 | 301 | int fd; |
41625033 | 302 | int running_state; |
4046d913 PB |
303 | #else |
304 | CharDriverState *chr; | |
8a34a0fb | 305 | CharDriverState *mon_chr; |
41625033 | 306 | #endif |
cdb432b2 MI |
307 | char syscall_buf[256]; |
308 | gdb_syscall_complete_cb current_syscall_cb; | |
858693c6 | 309 | } GDBState; |
b4608c04 | 310 | |
60897d36 EI |
311 | /* By default use no IRQs and no timers while single stepping so as to |
312 | * make single stepping like an ICE HW step. | |
313 | */ | |
314 | static int sstep_flags = SSTEP_ENABLE|SSTEP_NOIRQ|SSTEP_NOTIMER; | |
315 | ||
880a7578 AL |
316 | static GDBState *gdbserver_state; |
317 | ||
5b50e790 | 318 | bool gdb_has_xml; |
56aebc89 | 319 | |
1fddef4b | 320 | #ifdef CONFIG_USER_ONLY |
4046d913 PB |
321 | /* XXX: This is not thread safe. Do we care? */ |
322 | static int gdbserver_fd = -1; | |
323 | ||
858693c6 | 324 | static int get_char(GDBState *s) |
b4608c04 FB |
325 | { |
326 | uint8_t ch; | |
327 | int ret; | |
328 | ||
329 | for(;;) { | |
00aa0040 | 330 | ret = qemu_recv(s->fd, &ch, 1, 0); |
b4608c04 | 331 | if (ret < 0) { |
1f487ee9 EI |
332 | if (errno == ECONNRESET) |
333 | s->fd = -1; | |
b4608c04 FB |
334 | if (errno != EINTR && errno != EAGAIN) |
335 | return -1; | |
336 | } else if (ret == 0) { | |
1f487ee9 EI |
337 | close(s->fd); |
338 | s->fd = -1; | |
b4608c04 FB |
339 | return -1; |
340 | } else { | |
341 | break; | |
342 | } | |
343 | } | |
344 | return ch; | |
345 | } | |
4046d913 | 346 | #endif |
b4608c04 | 347 | |
654efcf3 | 348 | static enum { |
a2d1ebaf PB |
349 | GDB_SYS_UNKNOWN, |
350 | GDB_SYS_ENABLED, | |
351 | GDB_SYS_DISABLED, | |
352 | } gdb_syscall_mode; | |
353 | ||
354 | /* If gdb is connected when the first semihosting syscall occurs then use | |
355 | remote gdb syscalls. Otherwise use native file IO. */ | |
356 | int use_gdb_syscalls(void) | |
357 | { | |
358 | if (gdb_syscall_mode == GDB_SYS_UNKNOWN) { | |
880a7578 AL |
359 | gdb_syscall_mode = (gdbserver_state ? GDB_SYS_ENABLED |
360 | : GDB_SYS_DISABLED); | |
a2d1ebaf PB |
361 | } |
362 | return gdb_syscall_mode == GDB_SYS_ENABLED; | |
363 | } | |
364 | ||
ba70a624 EI |
365 | /* Resume execution. */ |
366 | static inline void gdb_continue(GDBState *s) | |
367 | { | |
368 | #ifdef CONFIG_USER_ONLY | |
369 | s->running_state = 1; | |
370 | #else | |
bc7d0e66 PB |
371 | if (runstate_check(RUN_STATE_GUEST_PANICKED)) { |
372 | runstate_set(RUN_STATE_DEBUG); | |
373 | } | |
26ac7a31 | 374 | if (!runstate_needs_reset()) { |
87f25c12 PB |
375 | vm_start(); |
376 | } | |
ba70a624 EI |
377 | #endif |
378 | } | |
379 | ||
858693c6 | 380 | static void put_buffer(GDBState *s, const uint8_t *buf, int len) |
b4608c04 | 381 | { |
4046d913 | 382 | #ifdef CONFIG_USER_ONLY |
b4608c04 FB |
383 | int ret; |
384 | ||
385 | while (len > 0) { | |
8f447cc7 | 386 | ret = send(s->fd, buf, len, 0); |
b4608c04 FB |
387 | if (ret < 0) { |
388 | if (errno != EINTR && errno != EAGAIN) | |
389 | return; | |
390 | } else { | |
391 | buf += ret; | |
392 | len -= ret; | |
393 | } | |
394 | } | |
4046d913 | 395 | #else |
2cc6e0a1 | 396 | qemu_chr_fe_write(s->chr, buf, len); |
4046d913 | 397 | #endif |
b4608c04 FB |
398 | } |
399 | ||
400 | static inline int fromhex(int v) | |
401 | { | |
402 | if (v >= '0' && v <= '9') | |
403 | return v - '0'; | |
404 | else if (v >= 'A' && v <= 'F') | |
405 | return v - 'A' + 10; | |
406 | else if (v >= 'a' && v <= 'f') | |
407 | return v - 'a' + 10; | |
408 | else | |
409 | return 0; | |
410 | } | |
411 | ||
412 | static inline int tohex(int v) | |
413 | { | |
414 | if (v < 10) | |
415 | return v + '0'; | |
416 | else | |
417 | return v - 10 + 'a'; | |
418 | } | |
419 | ||
420 | static void memtohex(char *buf, const uint8_t *mem, int len) | |
421 | { | |
422 | int i, c; | |
423 | char *q; | |
424 | q = buf; | |
425 | for(i = 0; i < len; i++) { | |
426 | c = mem[i]; | |
427 | *q++ = tohex(c >> 4); | |
428 | *q++ = tohex(c & 0xf); | |
429 | } | |
430 | *q = '\0'; | |
431 | } | |
432 | ||
433 | static void hextomem(uint8_t *mem, const char *buf, int len) | |
434 | { | |
435 | int i; | |
436 | ||
437 | for(i = 0; i < len; i++) { | |
438 | mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); | |
439 | buf += 2; | |
440 | } | |
441 | } | |
442 | ||
b4608c04 | 443 | /* return -1 if error, 0 if OK */ |
56aebc89 | 444 | static int put_packet_binary(GDBState *s, const char *buf, int len) |
b4608c04 | 445 | { |
56aebc89 | 446 | int csum, i; |
60fe76f3 | 447 | uint8_t *p; |
b4608c04 | 448 | |
b4608c04 | 449 | for(;;) { |
4046d913 PB |
450 | p = s->last_packet; |
451 | *(p++) = '$'; | |
4046d913 PB |
452 | memcpy(p, buf, len); |
453 | p += len; | |
b4608c04 FB |
454 | csum = 0; |
455 | for(i = 0; i < len; i++) { | |
456 | csum += buf[i]; | |
457 | } | |
4046d913 PB |
458 | *(p++) = '#'; |
459 | *(p++) = tohex((csum >> 4) & 0xf); | |
460 | *(p++) = tohex((csum) & 0xf); | |
b4608c04 | 461 | |
4046d913 | 462 | s->last_packet_len = p - s->last_packet; |
ffe8ab83 | 463 | put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); |
b4608c04 | 464 | |
4046d913 PB |
465 | #ifdef CONFIG_USER_ONLY |
466 | i = get_char(s); | |
467 | if (i < 0) | |
b4608c04 | 468 | return -1; |
4046d913 | 469 | if (i == '+') |
b4608c04 | 470 | break; |
4046d913 PB |
471 | #else |
472 | break; | |
473 | #endif | |
b4608c04 FB |
474 | } |
475 | return 0; | |
476 | } | |
477 | ||
56aebc89 PB |
478 | /* return -1 if error, 0 if OK */ |
479 | static int put_packet(GDBState *s, const char *buf) | |
480 | { | |
481 | #ifdef DEBUG_GDB | |
482 | printf("reply='%s'\n", buf); | |
483 | #endif | |
79808573 | 484 | |
56aebc89 PB |
485 | return put_packet_binary(s, buf, strlen(buf)); |
486 | } | |
487 | ||
5b50e790 | 488 | #if defined(TARGET_PPC) |
9e62fd7f | 489 | |
e571cb47 AJ |
490 | #if defined (TARGET_PPC64) |
491 | #define GDB_CORE_XML "power64-core.xml" | |
492 | #else | |
493 | #define GDB_CORE_XML "power-core.xml" | |
494 | #endif | |
9e62fd7f | 495 | |
1fddef4b | 496 | #elif defined (TARGET_ARM) |
6da41eaf | 497 | |
56aebc89 | 498 | #define GDB_CORE_XML "arm-core.xml" |
e6e5906b | 499 | |
56aebc89 | 500 | #elif defined (TARGET_M68K) |
6f970bd9 | 501 | |
56aebc89 | 502 | #define GDB_CORE_XML "cf-core.xml" |
6f970bd9 | 503 | |
56aebc89 | 504 | #endif |
f1ccf904 | 505 | |
56aebc89 PB |
506 | #ifdef GDB_CORE_XML |
507 | /* Encode data using the encoding for 'x' packets. */ | |
508 | static int memtox(char *buf, const char *mem, int len) | |
509 | { | |
510 | char *p = buf; | |
511 | char c; | |
512 | ||
513 | while (len--) { | |
514 | c = *(mem++); | |
515 | switch (c) { | |
516 | case '#': case '$': case '*': case '}': | |
517 | *(p++) = '}'; | |
518 | *(p++) = c ^ 0x20; | |
519 | break; | |
520 | default: | |
521 | *(p++) = c; | |
522 | break; | |
523 | } | |
524 | } | |
525 | return p - buf; | |
526 | } | |
f1ccf904 | 527 | |
3faf778e | 528 | static const char *get_feature_xml(const char *p, const char **newp) |
56aebc89 | 529 | { |
56aebc89 PB |
530 | size_t len; |
531 | int i; | |
532 | const char *name; | |
533 | static char target_xml[1024]; | |
534 | ||
535 | len = 0; | |
536 | while (p[len] && p[len] != ':') | |
537 | len++; | |
538 | *newp = p + len; | |
539 | ||
540 | name = NULL; | |
541 | if (strncmp(p, "target.xml", len) == 0) { | |
542 | /* Generate the XML description for this CPU. */ | |
543 | if (!target_xml[0]) { | |
544 | GDBRegisterState *r; | |
eac8b355 | 545 | CPUState *cpu = first_cpu; |
56aebc89 | 546 | |
5b3715bf BS |
547 | snprintf(target_xml, sizeof(target_xml), |
548 | "<?xml version=\"1.0\"?>" | |
549 | "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" | |
550 | "<target>" | |
551 | "<xi:include href=\"%s\"/>", | |
552 | GDB_CORE_XML); | |
56aebc89 | 553 | |
eac8b355 | 554 | for (r = cpu->gdb_regs; r; r = r->next) { |
2dc766da BS |
555 | pstrcat(target_xml, sizeof(target_xml), "<xi:include href=\""); |
556 | pstrcat(target_xml, sizeof(target_xml), r->xml); | |
557 | pstrcat(target_xml, sizeof(target_xml), "\"/>"); | |
56aebc89 | 558 | } |
2dc766da | 559 | pstrcat(target_xml, sizeof(target_xml), "</target>"); |
56aebc89 PB |
560 | } |
561 | return target_xml; | |
562 | } | |
563 | for (i = 0; ; i++) { | |
564 | name = xml_builtin[i][0]; | |
565 | if (!name || (strncmp(name, p, len) == 0 && strlen(name) == len)) | |
566 | break; | |
567 | } | |
568 | return name ? xml_builtin[i][1] : NULL; | |
569 | } | |
570 | #endif | |
f1ccf904 | 571 | |
385b9f0e | 572 | static int gdb_read_register(CPUState *cpu, uint8_t *mem_buf, int reg) |
56aebc89 | 573 | { |
a0e372f0 | 574 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 575 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 576 | GDBRegisterState *r; |
f1ccf904 | 577 | |
a0e372f0 | 578 | if (reg < cc->gdb_num_core_regs) { |
5b50e790 | 579 | return cc->gdb_read_register(cpu, mem_buf, reg); |
a0e372f0 | 580 | } |
f1ccf904 | 581 | |
eac8b355 | 582 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 PB |
583 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
584 | return r->get_reg(env, mem_buf, reg - r->base_reg); | |
585 | } | |
586 | } | |
587 | return 0; | |
f1ccf904 TS |
588 | } |
589 | ||
385b9f0e | 590 | static int gdb_write_register(CPUState *cpu, uint8_t *mem_buf, int reg) |
f1ccf904 | 591 | { |
a0e372f0 | 592 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 593 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 594 | GDBRegisterState *r; |
f1ccf904 | 595 | |
a0e372f0 | 596 | if (reg < cc->gdb_num_core_regs) { |
5b50e790 | 597 | return cc->gdb_write_register(cpu, mem_buf, reg); |
a0e372f0 | 598 | } |
56aebc89 | 599 | |
eac8b355 | 600 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 PB |
601 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
602 | return r->set_reg(env, mem_buf, reg - r->base_reg); | |
603 | } | |
604 | } | |
6da41eaf FB |
605 | return 0; |
606 | } | |
607 | ||
56aebc89 PB |
608 | /* Register a supplemental set of CPU registers. If g_pos is nonzero it |
609 | specifies the first register number and these registers are included in | |
610 | a standard "g" packet. Direction is relative to gdb, i.e. get_reg is | |
611 | gdb reading a CPU register, and set_reg is gdb modifying a CPU register. | |
612 | */ | |
613 | ||
22169d41 AF |
614 | void gdb_register_coprocessor(CPUState *cpu, |
615 | gdb_reg_cb get_reg, gdb_reg_cb set_reg, | |
616 | int num_regs, const char *xml, int g_pos) | |
6da41eaf | 617 | { |
56aebc89 PB |
618 | GDBRegisterState *s; |
619 | GDBRegisterState **p; | |
56aebc89 | 620 | |
eac8b355 | 621 | p = &cpu->gdb_regs; |
56aebc89 PB |
622 | while (*p) { |
623 | /* Check for duplicates. */ | |
624 | if (strcmp((*p)->xml, xml) == 0) | |
625 | return; | |
626 | p = &(*p)->next; | |
627 | } | |
9643c25f SW |
628 | |
629 | s = g_new0(GDBRegisterState, 1); | |
a0e372f0 | 630 | s->base_reg = cpu->gdb_num_regs; |
9643c25f SW |
631 | s->num_regs = num_regs; |
632 | s->get_reg = get_reg; | |
633 | s->set_reg = set_reg; | |
634 | s->xml = xml; | |
635 | ||
56aebc89 | 636 | /* Add to end of list. */ |
a0e372f0 | 637 | cpu->gdb_num_regs += num_regs; |
56aebc89 PB |
638 | *p = s; |
639 | if (g_pos) { | |
640 | if (g_pos != s->base_reg) { | |
641 | fprintf(stderr, "Error: Bad gdb register numbering for '%s'\n" | |
642 | "Expected %d got %d\n", xml, g_pos, s->base_reg); | |
56aebc89 PB |
643 | } |
644 | } | |
6da41eaf FB |
645 | } |
646 | ||
a1d1bb31 AL |
647 | #ifndef CONFIG_USER_ONLY |
648 | static const int xlat_gdb_type[] = { | |
649 | [GDB_WATCHPOINT_WRITE] = BP_GDB | BP_MEM_WRITE, | |
650 | [GDB_WATCHPOINT_READ] = BP_GDB | BP_MEM_READ, | |
651 | [GDB_WATCHPOINT_ACCESS] = BP_GDB | BP_MEM_ACCESS, | |
652 | }; | |
653 | #endif | |
654 | ||
880a7578 | 655 | static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) |
a1d1bb31 | 656 | { |
182735ef | 657 | CPUState *cpu; |
9349b4f9 | 658 | CPUArchState *env; |
880a7578 AL |
659 | int err = 0; |
660 | ||
62278814 | 661 | if (kvm_enabled()) { |
2e0f2cfb | 662 | return kvm_insert_breakpoint(gdbserver_state->c_cpu, addr, len, type); |
62278814 | 663 | } |
e22a25c9 | 664 | |
a1d1bb31 AL |
665 | switch (type) { |
666 | case GDB_BREAKPOINT_SW: | |
667 | case GDB_BREAKPOINT_HW: | |
182735ef AF |
668 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
669 | env = cpu->env_ptr; | |
880a7578 AL |
670 | err = cpu_breakpoint_insert(env, addr, BP_GDB, NULL); |
671 | if (err) | |
672 | break; | |
673 | } | |
674 | return err; | |
a1d1bb31 AL |
675 | #ifndef CONFIG_USER_ONLY |
676 | case GDB_WATCHPOINT_WRITE: | |
677 | case GDB_WATCHPOINT_READ: | |
678 | case GDB_WATCHPOINT_ACCESS: | |
182735ef AF |
679 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
680 | env = cpu->env_ptr; | |
880a7578 AL |
681 | err = cpu_watchpoint_insert(env, addr, len, xlat_gdb_type[type], |
682 | NULL); | |
683 | if (err) | |
684 | break; | |
685 | } | |
686 | return err; | |
a1d1bb31 AL |
687 | #endif |
688 | default: | |
689 | return -ENOSYS; | |
690 | } | |
691 | } | |
692 | ||
880a7578 | 693 | static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) |
a1d1bb31 | 694 | { |
182735ef | 695 | CPUState *cpu; |
9349b4f9 | 696 | CPUArchState *env; |
880a7578 AL |
697 | int err = 0; |
698 | ||
62278814 | 699 | if (kvm_enabled()) { |
2e0f2cfb | 700 | return kvm_remove_breakpoint(gdbserver_state->c_cpu, addr, len, type); |
62278814 | 701 | } |
e22a25c9 | 702 | |
a1d1bb31 AL |
703 | switch (type) { |
704 | case GDB_BREAKPOINT_SW: | |
705 | case GDB_BREAKPOINT_HW: | |
182735ef AF |
706 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
707 | env = cpu->env_ptr; | |
880a7578 AL |
708 | err = cpu_breakpoint_remove(env, addr, BP_GDB); |
709 | if (err) | |
710 | break; | |
711 | } | |
712 | return err; | |
a1d1bb31 AL |
713 | #ifndef CONFIG_USER_ONLY |
714 | case GDB_WATCHPOINT_WRITE: | |
715 | case GDB_WATCHPOINT_READ: | |
716 | case GDB_WATCHPOINT_ACCESS: | |
182735ef AF |
717 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
718 | env = cpu->env_ptr; | |
880a7578 AL |
719 | err = cpu_watchpoint_remove(env, addr, len, xlat_gdb_type[type]); |
720 | if (err) | |
721 | break; | |
722 | } | |
723 | return err; | |
a1d1bb31 AL |
724 | #endif |
725 | default: | |
726 | return -ENOSYS; | |
727 | } | |
728 | } | |
729 | ||
880a7578 | 730 | static void gdb_breakpoint_remove_all(void) |
a1d1bb31 | 731 | { |
182735ef | 732 | CPUState *cpu; |
9349b4f9 | 733 | CPUArchState *env; |
880a7578 | 734 | |
e22a25c9 | 735 | if (kvm_enabled()) { |
2e0f2cfb | 736 | kvm_remove_all_breakpoints(gdbserver_state->c_cpu); |
e22a25c9 AL |
737 | return; |
738 | } | |
739 | ||
182735ef AF |
740 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
741 | env = cpu->env_ptr; | |
880a7578 | 742 | cpu_breakpoint_remove_all(env, BP_GDB); |
a1d1bb31 | 743 | #ifndef CONFIG_USER_ONLY |
880a7578 | 744 | cpu_watchpoint_remove_all(env, BP_GDB); |
a1d1bb31 | 745 | #endif |
880a7578 | 746 | } |
a1d1bb31 AL |
747 | } |
748 | ||
fab9d284 AJ |
749 | static void gdb_set_cpu_pc(GDBState *s, target_ulong pc) |
750 | { | |
2e0f2cfb | 751 | CPUState *cpu = s->c_cpu; |
f45748f1 AF |
752 | CPUClass *cc = CPU_GET_CLASS(cpu); |
753 | ||
754 | cpu_synchronize_state(cpu); | |
755 | if (cc->set_pc) { | |
756 | cc->set_pc(cpu, pc); | |
ff1d1977 | 757 | } |
fab9d284 AJ |
758 | } |
759 | ||
2e0f2cfb | 760 | static CPUState *find_cpu(uint32_t thread_id) |
1e9fa730 | 761 | { |
0d34282f | 762 | CPUState *cpu; |
1e9fa730 | 763 | |
182735ef | 764 | for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) { |
aa48dd93 | 765 | if (cpu_index(cpu) == thread_id) { |
2e0f2cfb | 766 | return cpu; |
aa48dd93 | 767 | } |
1e9fa730 | 768 | } |
aa48dd93 AF |
769 | |
770 | return NULL; | |
1e9fa730 NF |
771 | } |
772 | ||
880a7578 | 773 | static int gdb_handle_packet(GDBState *s, const char *line_buf) |
b4608c04 | 774 | { |
2e0f2cfb | 775 | CPUState *cpu; |
b4608c04 | 776 | const char *p; |
1e9fa730 NF |
777 | uint32_t thread; |
778 | int ch, reg_size, type, res; | |
56aebc89 PB |
779 | char buf[MAX_PACKET_LENGTH]; |
780 | uint8_t mem_buf[MAX_PACKET_LENGTH]; | |
781 | uint8_t *registers; | |
9d9754a3 | 782 | target_ulong addr, len; |
3b46e624 | 783 | |
858693c6 FB |
784 | #ifdef DEBUG_GDB |
785 | printf("command='%s'\n", line_buf); | |
786 | #endif | |
787 | p = line_buf; | |
788 | ch = *p++; | |
789 | switch(ch) { | |
790 | case '?': | |
1fddef4b | 791 | /* TODO: Make this return the correct value for user-mode. */ |
ca587a8e | 792 | snprintf(buf, sizeof(buf), "T%02xthread:%02x;", GDB_SIGNAL_TRAP, |
2e0f2cfb | 793 | cpu_index(s->c_cpu)); |
858693c6 | 794 | put_packet(s, buf); |
7d03f82f EI |
795 | /* Remove all the breakpoints when this query is issued, |
796 | * because gdb is doing and initial connect and the state | |
797 | * should be cleaned up. | |
798 | */ | |
880a7578 | 799 | gdb_breakpoint_remove_all(); |
858693c6 FB |
800 | break; |
801 | case 'c': | |
802 | if (*p != '\0') { | |
9d9754a3 | 803 | addr = strtoull(p, (char **)&p, 16); |
fab9d284 | 804 | gdb_set_cpu_pc(s, addr); |
858693c6 | 805 | } |
ca587a8e | 806 | s->signal = 0; |
ba70a624 | 807 | gdb_continue(s); |
41625033 | 808 | return RS_IDLE; |
1f487ee9 | 809 | case 'C': |
ca587a8e AJ |
810 | s->signal = gdb_signal_to_target (strtoul(p, (char **)&p, 16)); |
811 | if (s->signal == -1) | |
812 | s->signal = 0; | |
1f487ee9 EI |
813 | gdb_continue(s); |
814 | return RS_IDLE; | |
dd32aa10 JK |
815 | case 'v': |
816 | if (strncmp(p, "Cont", 4) == 0) { | |
817 | int res_signal, res_thread; | |
818 | ||
819 | p += 4; | |
820 | if (*p == '?') { | |
821 | put_packet(s, "vCont;c;C;s;S"); | |
822 | break; | |
823 | } | |
824 | res = 0; | |
825 | res_signal = 0; | |
826 | res_thread = 0; | |
827 | while (*p) { | |
828 | int action, signal; | |
829 | ||
830 | if (*p++ != ';') { | |
831 | res = 0; | |
832 | break; | |
833 | } | |
834 | action = *p++; | |
835 | signal = 0; | |
836 | if (action == 'C' || action == 'S') { | |
837 | signal = strtoul(p, (char **)&p, 16); | |
838 | } else if (action != 'c' && action != 's') { | |
839 | res = 0; | |
840 | break; | |
841 | } | |
842 | thread = 0; | |
843 | if (*p == ':') { | |
844 | thread = strtoull(p+1, (char **)&p, 16); | |
845 | } | |
846 | action = tolower(action); | |
847 | if (res == 0 || (res == 'c' && action == 's')) { | |
848 | res = action; | |
849 | res_signal = signal; | |
850 | res_thread = thread; | |
851 | } | |
852 | } | |
853 | if (res) { | |
854 | if (res_thread != -1 && res_thread != 0) { | |
2e0f2cfb AF |
855 | cpu = find_cpu(res_thread); |
856 | if (cpu == NULL) { | |
dd32aa10 JK |
857 | put_packet(s, "E22"); |
858 | break; | |
859 | } | |
2e0f2cfb | 860 | s->c_cpu = cpu; |
dd32aa10 JK |
861 | } |
862 | if (res == 's') { | |
2e0f2cfb | 863 | cpu_single_step(s->c_cpu, sstep_flags); |
dd32aa10 JK |
864 | } |
865 | s->signal = res_signal; | |
866 | gdb_continue(s); | |
867 | return RS_IDLE; | |
868 | } | |
869 | break; | |
870 | } else { | |
871 | goto unknown_command; | |
872 | } | |
7d03f82f | 873 | case 'k': |
00e94dbc | 874 | #ifdef CONFIG_USER_ONLY |
7d03f82f EI |
875 | /* Kill the target */ |
876 | fprintf(stderr, "\nQEMU: Terminated via GDBstub\n"); | |
877 | exit(0); | |
00e94dbc | 878 | #endif |
7d03f82f EI |
879 | case 'D': |
880 | /* Detach packet */ | |
880a7578 | 881 | gdb_breakpoint_remove_all(); |
7ea06da3 | 882 | gdb_syscall_mode = GDB_SYS_DISABLED; |
7d03f82f EI |
883 | gdb_continue(s); |
884 | put_packet(s, "OK"); | |
885 | break; | |
858693c6 FB |
886 | case 's': |
887 | if (*p != '\0') { | |
8fac5803 | 888 | addr = strtoull(p, (char **)&p, 16); |
fab9d284 | 889 | gdb_set_cpu_pc(s, addr); |
858693c6 | 890 | } |
2e0f2cfb | 891 | cpu_single_step(s->c_cpu, sstep_flags); |
ba70a624 | 892 | gdb_continue(s); |
41625033 | 893 | return RS_IDLE; |
a2d1ebaf PB |
894 | case 'F': |
895 | { | |
896 | target_ulong ret; | |
897 | target_ulong err; | |
898 | ||
899 | ret = strtoull(p, (char **)&p, 16); | |
900 | if (*p == ',') { | |
901 | p++; | |
902 | err = strtoull(p, (char **)&p, 16); | |
903 | } else { | |
904 | err = 0; | |
905 | } | |
906 | if (*p == ',') | |
907 | p++; | |
908 | type = *p; | |
cdb432b2 | 909 | if (s->current_syscall_cb) { |
2e0f2cfb | 910 | s->current_syscall_cb(s->c_cpu, ret, err); |
cdb432b2 MI |
911 | s->current_syscall_cb = NULL; |
912 | } | |
a2d1ebaf PB |
913 | if (type == 'C') { |
914 | put_packet(s, "T02"); | |
915 | } else { | |
ba70a624 | 916 | gdb_continue(s); |
a2d1ebaf PB |
917 | } |
918 | } | |
919 | break; | |
858693c6 | 920 | case 'g': |
2e0f2cfb | 921 | cpu_synchronize_state(s->g_cpu); |
56aebc89 | 922 | len = 0; |
a0e372f0 | 923 | for (addr = 0; addr < s->g_cpu->gdb_num_regs; addr++) { |
2e0f2cfb | 924 | reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr); |
56aebc89 PB |
925 | len += reg_size; |
926 | } | |
927 | memtohex(buf, mem_buf, len); | |
858693c6 FB |
928 | put_packet(s, buf); |
929 | break; | |
930 | case 'G': | |
2e0f2cfb | 931 | cpu_synchronize_state(s->g_cpu); |
56aebc89 | 932 | registers = mem_buf; |
858693c6 FB |
933 | len = strlen(p) / 2; |
934 | hextomem((uint8_t *)registers, p, len); | |
a0e372f0 | 935 | for (addr = 0; addr < s->g_cpu->gdb_num_regs && len > 0; addr++) { |
2e0f2cfb | 936 | reg_size = gdb_write_register(s->g_cpu, registers, addr); |
56aebc89 PB |
937 | len -= reg_size; |
938 | registers += reg_size; | |
939 | } | |
858693c6 FB |
940 | put_packet(s, "OK"); |
941 | break; | |
942 | case 'm': | |
9d9754a3 | 943 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
944 | if (*p == ',') |
945 | p++; | |
9d9754a3 | 946 | len = strtoull(p, NULL, 16); |
2e0f2cfb | 947 | if (target_memory_rw_debug(s->g_cpu, addr, mem_buf, len, false) != 0) { |
6f970bd9 FB |
948 | put_packet (s, "E14"); |
949 | } else { | |
950 | memtohex(buf, mem_buf, len); | |
951 | put_packet(s, buf); | |
952 | } | |
858693c6 FB |
953 | break; |
954 | case 'M': | |
9d9754a3 | 955 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
956 | if (*p == ',') |
957 | p++; | |
9d9754a3 | 958 | len = strtoull(p, (char **)&p, 16); |
b328f873 | 959 | if (*p == ':') |
858693c6 FB |
960 | p++; |
961 | hextomem(mem_buf, p, len); | |
2e0f2cfb | 962 | if (target_memory_rw_debug(s->g_cpu, addr, mem_buf, len, |
f3659eee | 963 | true) != 0) { |
905f20b1 | 964 | put_packet(s, "E14"); |
44520db1 | 965 | } else { |
858693c6 | 966 | put_packet(s, "OK"); |
44520db1 | 967 | } |
858693c6 | 968 | break; |
56aebc89 PB |
969 | case 'p': |
970 | /* Older gdb are really dumb, and don't use 'g' if 'p' is avaialable. | |
971 | This works, but can be very slow. Anything new enough to | |
972 | understand XML also knows how to use this properly. */ | |
973 | if (!gdb_has_xml) | |
974 | goto unknown_command; | |
975 | addr = strtoull(p, (char **)&p, 16); | |
2e0f2cfb | 976 | reg_size = gdb_read_register(s->g_cpu, mem_buf, addr); |
56aebc89 PB |
977 | if (reg_size) { |
978 | memtohex(buf, mem_buf, reg_size); | |
979 | put_packet(s, buf); | |
980 | } else { | |
981 | put_packet(s, "E14"); | |
982 | } | |
983 | break; | |
984 | case 'P': | |
985 | if (!gdb_has_xml) | |
986 | goto unknown_command; | |
987 | addr = strtoull(p, (char **)&p, 16); | |
988 | if (*p == '=') | |
989 | p++; | |
990 | reg_size = strlen(p) / 2; | |
991 | hextomem(mem_buf, p, reg_size); | |
2e0f2cfb | 992 | gdb_write_register(s->g_cpu, mem_buf, addr); |
56aebc89 PB |
993 | put_packet(s, "OK"); |
994 | break; | |
858693c6 | 995 | case 'Z': |
858693c6 FB |
996 | case 'z': |
997 | type = strtoul(p, (char **)&p, 16); | |
998 | if (*p == ',') | |
999 | p++; | |
9d9754a3 | 1000 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
1001 | if (*p == ',') |
1002 | p++; | |
9d9754a3 | 1003 | len = strtoull(p, (char **)&p, 16); |
a1d1bb31 | 1004 | if (ch == 'Z') |
880a7578 | 1005 | res = gdb_breakpoint_insert(addr, len, type); |
a1d1bb31 | 1006 | else |
880a7578 | 1007 | res = gdb_breakpoint_remove(addr, len, type); |
a1d1bb31 AL |
1008 | if (res >= 0) |
1009 | put_packet(s, "OK"); | |
1010 | else if (res == -ENOSYS) | |
0f459d16 | 1011 | put_packet(s, ""); |
a1d1bb31 AL |
1012 | else |
1013 | put_packet(s, "E22"); | |
858693c6 | 1014 | break; |
880a7578 AL |
1015 | case 'H': |
1016 | type = *p++; | |
1017 | thread = strtoull(p, (char **)&p, 16); | |
1018 | if (thread == -1 || thread == 0) { | |
1019 | put_packet(s, "OK"); | |
1020 | break; | |
1021 | } | |
2e0f2cfb AF |
1022 | cpu = find_cpu(thread); |
1023 | if (cpu == NULL) { | |
880a7578 AL |
1024 | put_packet(s, "E22"); |
1025 | break; | |
1026 | } | |
1027 | switch (type) { | |
1028 | case 'c': | |
2e0f2cfb | 1029 | s->c_cpu = cpu; |
880a7578 AL |
1030 | put_packet(s, "OK"); |
1031 | break; | |
1032 | case 'g': | |
2e0f2cfb | 1033 | s->g_cpu = cpu; |
880a7578 AL |
1034 | put_packet(s, "OK"); |
1035 | break; | |
1036 | default: | |
1037 | put_packet(s, "E22"); | |
1038 | break; | |
1039 | } | |
1040 | break; | |
1041 | case 'T': | |
1042 | thread = strtoull(p, (char **)&p, 16); | |
2e0f2cfb | 1043 | cpu = find_cpu(thread); |
1e9fa730 | 1044 | |
2e0f2cfb | 1045 | if (cpu != NULL) { |
1e9fa730 NF |
1046 | put_packet(s, "OK"); |
1047 | } else { | |
880a7578 | 1048 | put_packet(s, "E22"); |
1e9fa730 | 1049 | } |
880a7578 | 1050 | break; |
978efd6a | 1051 | case 'q': |
60897d36 EI |
1052 | case 'Q': |
1053 | /* parse any 'q' packets here */ | |
1054 | if (!strcmp(p,"qemu.sstepbits")) { | |
1055 | /* Query Breakpoint bit definitions */ | |
363a37d5 BS |
1056 | snprintf(buf, sizeof(buf), "ENABLE=%x,NOIRQ=%x,NOTIMER=%x", |
1057 | SSTEP_ENABLE, | |
1058 | SSTEP_NOIRQ, | |
1059 | SSTEP_NOTIMER); | |
60897d36 EI |
1060 | put_packet(s, buf); |
1061 | break; | |
1062 | } else if (strncmp(p,"qemu.sstep",10) == 0) { | |
1063 | /* Display or change the sstep_flags */ | |
1064 | p += 10; | |
1065 | if (*p != '=') { | |
1066 | /* Display current setting */ | |
363a37d5 | 1067 | snprintf(buf, sizeof(buf), "0x%x", sstep_flags); |
60897d36 EI |
1068 | put_packet(s, buf); |
1069 | break; | |
1070 | } | |
1071 | p++; | |
1072 | type = strtoul(p, (char **)&p, 16); | |
1073 | sstep_flags = type; | |
1074 | put_packet(s, "OK"); | |
1075 | break; | |
880a7578 AL |
1076 | } else if (strcmp(p,"C") == 0) { |
1077 | /* "Current thread" remains vague in the spec, so always return | |
1078 | * the first CPU (gdb returns the first thread). */ | |
1079 | put_packet(s, "QC1"); | |
1080 | break; | |
1081 | } else if (strcmp(p,"fThreadInfo") == 0) { | |
52f34623 | 1082 | s->query_cpu = first_cpu; |
880a7578 AL |
1083 | goto report_cpuinfo; |
1084 | } else if (strcmp(p,"sThreadInfo") == 0) { | |
1085 | report_cpuinfo: | |
1086 | if (s->query_cpu) { | |
52f34623 | 1087 | snprintf(buf, sizeof(buf), "m%x", cpu_index(s->query_cpu)); |
880a7578 | 1088 | put_packet(s, buf); |
52f34623 | 1089 | s->query_cpu = s->query_cpu->next_cpu; |
880a7578 AL |
1090 | } else |
1091 | put_packet(s, "l"); | |
1092 | break; | |
1093 | } else if (strncmp(p,"ThreadExtraInfo,", 16) == 0) { | |
1094 | thread = strtoull(p+16, (char **)&p, 16); | |
2e0f2cfb AF |
1095 | cpu = find_cpu(thread); |
1096 | if (cpu != NULL) { | |
cb446eca | 1097 | cpu_synchronize_state(cpu); |
1e9fa730 | 1098 | len = snprintf((char *)mem_buf, sizeof(mem_buf), |
55e5c285 | 1099 | "CPU#%d [%s]", cpu->cpu_index, |
259186a7 | 1100 | cpu->halted ? "halted " : "running"); |
1e9fa730 NF |
1101 | memtohex(buf, mem_buf, len); |
1102 | put_packet(s, buf); | |
1103 | } | |
880a7578 | 1104 | break; |
60897d36 | 1105 | } |
0b8a988c | 1106 | #ifdef CONFIG_USER_ONLY |
60897d36 | 1107 | else if (strncmp(p, "Offsets", 7) == 0) { |
2e0f2cfb AF |
1108 | CPUArchState *env = s->c_cpu->env_ptr; |
1109 | TaskState *ts = env->opaque; | |
978efd6a | 1110 | |
363a37d5 BS |
1111 | snprintf(buf, sizeof(buf), |
1112 | "Text=" TARGET_ABI_FMT_lx ";Data=" TARGET_ABI_FMT_lx | |
1113 | ";Bss=" TARGET_ABI_FMT_lx, | |
1114 | ts->info->code_offset, | |
1115 | ts->info->data_offset, | |
1116 | ts->info->data_offset); | |
978efd6a PB |
1117 | put_packet(s, buf); |
1118 | break; | |
1119 | } | |
0b8a988c | 1120 | #else /* !CONFIG_USER_ONLY */ |
8a34a0fb AL |
1121 | else if (strncmp(p, "Rcmd,", 5) == 0) { |
1122 | int len = strlen(p + 5); | |
1123 | ||
1124 | if ((len % 2) != 0) { | |
1125 | put_packet(s, "E01"); | |
1126 | break; | |
1127 | } | |
1128 | hextomem(mem_buf, p + 5, len); | |
1129 | len = len / 2; | |
1130 | mem_buf[len++] = 0; | |
fa5efccb | 1131 | qemu_chr_be_write(s->mon_chr, mem_buf, len); |
8a34a0fb AL |
1132 | put_packet(s, "OK"); |
1133 | break; | |
1134 | } | |
0b8a988c | 1135 | #endif /* !CONFIG_USER_ONLY */ |
56aebc89 | 1136 | if (strncmp(p, "Supported", 9) == 0) { |
5b3715bf | 1137 | snprintf(buf, sizeof(buf), "PacketSize=%x", MAX_PACKET_LENGTH); |
56aebc89 | 1138 | #ifdef GDB_CORE_XML |
2dc766da | 1139 | pstrcat(buf, sizeof(buf), ";qXfer:features:read+"); |
56aebc89 PB |
1140 | #endif |
1141 | put_packet(s, buf); | |
1142 | break; | |
1143 | } | |
1144 | #ifdef GDB_CORE_XML | |
1145 | if (strncmp(p, "Xfer:features:read:", 19) == 0) { | |
1146 | const char *xml; | |
1147 | target_ulong total_len; | |
1148 | ||
5b50e790 | 1149 | gdb_has_xml = true; |
56aebc89 | 1150 | p += 19; |
880a7578 | 1151 | xml = get_feature_xml(p, &p); |
56aebc89 | 1152 | if (!xml) { |
5b3715bf | 1153 | snprintf(buf, sizeof(buf), "E00"); |
56aebc89 PB |
1154 | put_packet(s, buf); |
1155 | break; | |
1156 | } | |
1157 | ||
1158 | if (*p == ':') | |
1159 | p++; | |
1160 | addr = strtoul(p, (char **)&p, 16); | |
1161 | if (*p == ',') | |
1162 | p++; | |
1163 | len = strtoul(p, (char **)&p, 16); | |
1164 | ||
1165 | total_len = strlen(xml); | |
1166 | if (addr > total_len) { | |
5b3715bf | 1167 | snprintf(buf, sizeof(buf), "E00"); |
56aebc89 PB |
1168 | put_packet(s, buf); |
1169 | break; | |
1170 | } | |
1171 | if (len > (MAX_PACKET_LENGTH - 5) / 2) | |
1172 | len = (MAX_PACKET_LENGTH - 5) / 2; | |
1173 | if (len < total_len - addr) { | |
1174 | buf[0] = 'm'; | |
1175 | len = memtox(buf + 1, xml + addr, len); | |
1176 | } else { | |
1177 | buf[0] = 'l'; | |
1178 | len = memtox(buf + 1, xml + addr, total_len - addr); | |
1179 | } | |
1180 | put_packet_binary(s, buf, len + 1); | |
1181 | break; | |
1182 | } | |
1183 | #endif | |
1184 | /* Unrecognised 'q' command. */ | |
1185 | goto unknown_command; | |
1186 | ||
858693c6 | 1187 | default: |
56aebc89 | 1188 | unknown_command: |
858693c6 FB |
1189 | /* put empty packet */ |
1190 | buf[0] = '\0'; | |
1191 | put_packet(s, buf); | |
1192 | break; | |
1193 | } | |
1194 | return RS_IDLE; | |
1195 | } | |
1196 | ||
64f6b346 | 1197 | void gdb_set_stop_cpu(CPUState *cpu) |
880a7578 | 1198 | { |
2e0f2cfb AF |
1199 | gdbserver_state->c_cpu = cpu; |
1200 | gdbserver_state->g_cpu = cpu; | |
880a7578 AL |
1201 | } |
1202 | ||
1fddef4b | 1203 | #ifndef CONFIG_USER_ONLY |
1dfb4dd9 | 1204 | static void gdb_vm_state_change(void *opaque, int running, RunState state) |
858693c6 | 1205 | { |
880a7578 | 1206 | GDBState *s = gdbserver_state; |
2e0f2cfb AF |
1207 | CPUArchState *env = s->c_cpu->env_ptr; |
1208 | CPUState *cpu = s->c_cpu; | |
858693c6 | 1209 | char buf[256]; |
d6fc1b39 | 1210 | const char *type; |
858693c6 FB |
1211 | int ret; |
1212 | ||
cdb432b2 MI |
1213 | if (running || s->state == RS_INACTIVE) { |
1214 | return; | |
1215 | } | |
1216 | /* Is there a GDB syscall waiting to be sent? */ | |
1217 | if (s->current_syscall_cb) { | |
1218 | put_packet(s, s->syscall_buf); | |
a2d1ebaf | 1219 | return; |
e07bbac5 | 1220 | } |
1dfb4dd9 | 1221 | switch (state) { |
0461d5a6 | 1222 | case RUN_STATE_DEBUG: |
880a7578 AL |
1223 | if (env->watchpoint_hit) { |
1224 | switch (env->watchpoint_hit->flags & BP_MEM_ACCESS) { | |
a1d1bb31 | 1225 | case BP_MEM_READ: |
d6fc1b39 AL |
1226 | type = "r"; |
1227 | break; | |
a1d1bb31 | 1228 | case BP_MEM_ACCESS: |
d6fc1b39 AL |
1229 | type = "a"; |
1230 | break; | |
1231 | default: | |
1232 | type = ""; | |
1233 | break; | |
1234 | } | |
880a7578 AL |
1235 | snprintf(buf, sizeof(buf), |
1236 | "T%02xthread:%02x;%swatch:" TARGET_FMT_lx ";", | |
0d34282f | 1237 | GDB_SIGNAL_TRAP, cpu_index(cpu), type, |
880a7578 | 1238 | env->watchpoint_hit->vaddr); |
880a7578 | 1239 | env->watchpoint_hit = NULL; |
425189a8 | 1240 | goto send_packet; |
6658ffb8 | 1241 | } |
425189a8 | 1242 | tb_flush(env); |
ca587a8e | 1243 | ret = GDB_SIGNAL_TRAP; |
425189a8 | 1244 | break; |
0461d5a6 | 1245 | case RUN_STATE_PAUSED: |
9781e040 | 1246 | ret = GDB_SIGNAL_INT; |
425189a8 | 1247 | break; |
0461d5a6 | 1248 | case RUN_STATE_SHUTDOWN: |
425189a8 JK |
1249 | ret = GDB_SIGNAL_QUIT; |
1250 | break; | |
0461d5a6 | 1251 | case RUN_STATE_IO_ERROR: |
425189a8 JK |
1252 | ret = GDB_SIGNAL_IO; |
1253 | break; | |
0461d5a6 | 1254 | case RUN_STATE_WATCHDOG: |
425189a8 JK |
1255 | ret = GDB_SIGNAL_ALRM; |
1256 | break; | |
0461d5a6 | 1257 | case RUN_STATE_INTERNAL_ERROR: |
425189a8 JK |
1258 | ret = GDB_SIGNAL_ABRT; |
1259 | break; | |
0461d5a6 LC |
1260 | case RUN_STATE_SAVE_VM: |
1261 | case RUN_STATE_RESTORE_VM: | |
425189a8 | 1262 | return; |
0461d5a6 | 1263 | case RUN_STATE_FINISH_MIGRATE: |
425189a8 JK |
1264 | ret = GDB_SIGNAL_XCPU; |
1265 | break; | |
1266 | default: | |
1267 | ret = GDB_SIGNAL_UNKNOWN; | |
1268 | break; | |
bbeb7b5c | 1269 | } |
0d34282f | 1270 | snprintf(buf, sizeof(buf), "T%02xthread:%02x;", ret, cpu_index(cpu)); |
425189a8 JK |
1271 | |
1272 | send_packet: | |
858693c6 | 1273 | put_packet(s, buf); |
425189a8 JK |
1274 | |
1275 | /* disable single step if it was enabled */ | |
3825b28f | 1276 | cpu_single_step(cpu, 0); |
858693c6 | 1277 | } |
1fddef4b | 1278 | #endif |
858693c6 | 1279 | |
a2d1ebaf PB |
1280 | /* Send a gdb syscall request. |
1281 | This accepts limited printf-style format specifiers, specifically: | |
a87295e8 PB |
1282 | %x - target_ulong argument printed in hex. |
1283 | %lx - 64-bit argument printed in hex. | |
1284 | %s - string pointer (target_ulong) and length (int) pair. */ | |
7ccfb2eb | 1285 | void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) |
a2d1ebaf PB |
1286 | { |
1287 | va_list va; | |
a2d1ebaf | 1288 | char *p; |
cdb432b2 | 1289 | char *p_end; |
a2d1ebaf | 1290 | target_ulong addr; |
a87295e8 | 1291 | uint64_t i64; |
a2d1ebaf PB |
1292 | GDBState *s; |
1293 | ||
880a7578 | 1294 | s = gdbserver_state; |
a2d1ebaf PB |
1295 | if (!s) |
1296 | return; | |
cdb432b2 | 1297 | s->current_syscall_cb = cb; |
a2d1ebaf | 1298 | #ifndef CONFIG_USER_ONLY |
0461d5a6 | 1299 | vm_stop(RUN_STATE_DEBUG); |
a2d1ebaf | 1300 | #endif |
a2d1ebaf | 1301 | va_start(va, fmt); |
cdb432b2 MI |
1302 | p = s->syscall_buf; |
1303 | p_end = &s->syscall_buf[sizeof(s->syscall_buf)]; | |
a2d1ebaf PB |
1304 | *(p++) = 'F'; |
1305 | while (*fmt) { | |
1306 | if (*fmt == '%') { | |
1307 | fmt++; | |
1308 | switch (*fmt++) { | |
1309 | case 'x': | |
1310 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 1311 | p += snprintf(p, p_end - p, TARGET_FMT_lx, addr); |
a2d1ebaf | 1312 | break; |
a87295e8 PB |
1313 | case 'l': |
1314 | if (*(fmt++) != 'x') | |
1315 | goto bad_format; | |
1316 | i64 = va_arg(va, uint64_t); | |
cdb432b2 | 1317 | p += snprintf(p, p_end - p, "%" PRIx64, i64); |
a87295e8 | 1318 | break; |
a2d1ebaf PB |
1319 | case 's': |
1320 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 1321 | p += snprintf(p, p_end - p, TARGET_FMT_lx "/%x", |
363a37d5 | 1322 | addr, va_arg(va, int)); |
a2d1ebaf PB |
1323 | break; |
1324 | default: | |
a87295e8 | 1325 | bad_format: |
a2d1ebaf PB |
1326 | fprintf(stderr, "gdbstub: Bad syscall format string '%s'\n", |
1327 | fmt - 1); | |
1328 | break; | |
1329 | } | |
1330 | } else { | |
1331 | *(p++) = *(fmt++); | |
1332 | } | |
1333 | } | |
8a93e02a | 1334 | *p = 0; |
a2d1ebaf | 1335 | va_end(va); |
a2d1ebaf | 1336 | #ifdef CONFIG_USER_ONLY |
cdb432b2 | 1337 | put_packet(s, s->syscall_buf); |
2e0f2cfb | 1338 | gdb_handlesig(s->c_cpu, 0); |
a2d1ebaf | 1339 | #else |
cdb432b2 MI |
1340 | /* In this case wait to send the syscall packet until notification that |
1341 | the CPU has stopped. This must be done because if the packet is sent | |
1342 | now the reply from the syscall request could be received while the CPU | |
1343 | is still in the running state, which can cause packets to be dropped | |
1344 | and state transition 'T' packets to be sent while the syscall is still | |
1345 | being processed. */ | |
2e0f2cfb | 1346 | cpu_exit(s->c_cpu); |
a2d1ebaf PB |
1347 | #endif |
1348 | } | |
1349 | ||
6a00d601 | 1350 | static void gdb_read_byte(GDBState *s, int ch) |
858693c6 FB |
1351 | { |
1352 | int i, csum; | |
60fe76f3 | 1353 | uint8_t reply; |
858693c6 | 1354 | |
1fddef4b | 1355 | #ifndef CONFIG_USER_ONLY |
4046d913 PB |
1356 | if (s->last_packet_len) { |
1357 | /* Waiting for a response to the last packet. If we see the start | |
1358 | of a new command then abandon the previous response. */ | |
1359 | if (ch == '-') { | |
1360 | #ifdef DEBUG_GDB | |
1361 | printf("Got NACK, retransmitting\n"); | |
1362 | #endif | |
ffe8ab83 | 1363 | put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); |
4046d913 PB |
1364 | } |
1365 | #ifdef DEBUG_GDB | |
1366 | else if (ch == '+') | |
1367 | printf("Got ACK\n"); | |
1368 | else | |
1369 | printf("Got '%c' when expecting ACK/NACK\n", ch); | |
1370 | #endif | |
1371 | if (ch == '+' || ch == '$') | |
1372 | s->last_packet_len = 0; | |
1373 | if (ch != '$') | |
1374 | return; | |
1375 | } | |
1354869c | 1376 | if (runstate_is_running()) { |
858693c6 FB |
1377 | /* when the CPU is running, we cannot do anything except stop |
1378 | it when receiving a char */ | |
0461d5a6 | 1379 | vm_stop(RUN_STATE_PAUSED); |
5fafdf24 | 1380 | } else |
1fddef4b | 1381 | #endif |
41625033 | 1382 | { |
858693c6 FB |
1383 | switch(s->state) { |
1384 | case RS_IDLE: | |
1385 | if (ch == '$') { | |
1386 | s->line_buf_index = 0; | |
1387 | s->state = RS_GETLINE; | |
c33a346e | 1388 | } |
b4608c04 | 1389 | break; |
858693c6 FB |
1390 | case RS_GETLINE: |
1391 | if (ch == '#') { | |
1392 | s->state = RS_CHKSUM1; | |
1393 | } else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { | |
1394 | s->state = RS_IDLE; | |
4c3a88a2 | 1395 | } else { |
858693c6 | 1396 | s->line_buf[s->line_buf_index++] = ch; |
4c3a88a2 FB |
1397 | } |
1398 | break; | |
858693c6 FB |
1399 | case RS_CHKSUM1: |
1400 | s->line_buf[s->line_buf_index] = '\0'; | |
1401 | s->line_csum = fromhex(ch) << 4; | |
1402 | s->state = RS_CHKSUM2; | |
1403 | break; | |
1404 | case RS_CHKSUM2: | |
1405 | s->line_csum |= fromhex(ch); | |
1406 | csum = 0; | |
1407 | for(i = 0; i < s->line_buf_index; i++) { | |
1408 | csum += s->line_buf[i]; | |
1409 | } | |
1410 | if (s->line_csum != (csum & 0xff)) { | |
60fe76f3 TS |
1411 | reply = '-'; |
1412 | put_buffer(s, &reply, 1); | |
858693c6 | 1413 | s->state = RS_IDLE; |
4c3a88a2 | 1414 | } else { |
60fe76f3 TS |
1415 | reply = '+'; |
1416 | put_buffer(s, &reply, 1); | |
880a7578 | 1417 | s->state = gdb_handle_packet(s, s->line_buf); |
4c3a88a2 FB |
1418 | } |
1419 | break; | |
a2d1ebaf PB |
1420 | default: |
1421 | abort(); | |
858693c6 FB |
1422 | } |
1423 | } | |
1424 | } | |
1425 | ||
0e1c9c54 | 1426 | /* Tell the remote gdb that the process has exited. */ |
9349b4f9 | 1427 | void gdb_exit(CPUArchState *env, int code) |
0e1c9c54 PB |
1428 | { |
1429 | GDBState *s; | |
1430 | char buf[4]; | |
1431 | ||
1432 | s = gdbserver_state; | |
1433 | if (!s) { | |
1434 | return; | |
1435 | } | |
1436 | #ifdef CONFIG_USER_ONLY | |
1437 | if (gdbserver_fd < 0 || s->fd < 0) { | |
1438 | return; | |
1439 | } | |
1440 | #endif | |
1441 | ||
1442 | snprintf(buf, sizeof(buf), "W%02x", (uint8_t)code); | |
1443 | put_packet(s, buf); | |
e2af15b2 FC |
1444 | |
1445 | #ifndef CONFIG_USER_ONLY | |
1446 | if (s->chr) { | |
70f24fb6 | 1447 | qemu_chr_delete(s->chr); |
e2af15b2 FC |
1448 | } |
1449 | #endif | |
0e1c9c54 PB |
1450 | } |
1451 | ||
1fddef4b | 1452 | #ifdef CONFIG_USER_ONLY |
ca587a8e AJ |
1453 | int |
1454 | gdb_queuesig (void) | |
1455 | { | |
1456 | GDBState *s; | |
1457 | ||
1458 | s = gdbserver_state; | |
1459 | ||
1460 | if (gdbserver_fd < 0 || s->fd < 0) | |
1461 | return 0; | |
1462 | else | |
1463 | return 1; | |
1464 | } | |
1465 | ||
1fddef4b | 1466 | int |
db6b81d4 | 1467 | gdb_handlesig(CPUState *cpu, int sig) |
1fddef4b | 1468 | { |
db6b81d4 | 1469 | CPUArchState *env = cpu->env_ptr; |
5ca666c7 AF |
1470 | GDBState *s; |
1471 | char buf[256]; | |
1472 | int n; | |
1fddef4b | 1473 | |
5ca666c7 AF |
1474 | s = gdbserver_state; |
1475 | if (gdbserver_fd < 0 || s->fd < 0) { | |
1476 | return sig; | |
1477 | } | |
1fddef4b | 1478 | |
5ca666c7 | 1479 | /* disable single step if it was enabled */ |
3825b28f | 1480 | cpu_single_step(cpu, 0); |
5ca666c7 | 1481 | tb_flush(env); |
1fddef4b | 1482 | |
5ca666c7 AF |
1483 | if (sig != 0) { |
1484 | snprintf(buf, sizeof(buf), "S%02x", target_signal_to_gdb(sig)); | |
1485 | put_packet(s, buf); | |
1486 | } | |
1487 | /* put_packet() might have detected that the peer terminated the | |
1488 | connection. */ | |
1489 | if (s->fd < 0) { | |
1490 | return sig; | |
1491 | } | |
1fddef4b | 1492 | |
5ca666c7 AF |
1493 | sig = 0; |
1494 | s->state = RS_IDLE; | |
1495 | s->running_state = 0; | |
1496 | while (s->running_state == 0) { | |
1497 | n = read(s->fd, buf, 256); | |
1498 | if (n > 0) { | |
1499 | int i; | |
1500 | ||
1501 | for (i = 0; i < n; i++) { | |
1502 | gdb_read_byte(s, buf[i]); | |
1503 | } | |
1504 | } else if (n == 0 || errno != EAGAIN) { | |
1505 | /* XXX: Connection closed. Should probably wait for another | |
1506 | connection before continuing. */ | |
1507 | return sig; | |
1fddef4b | 1508 | } |
5ca666c7 AF |
1509 | } |
1510 | sig = s->signal; | |
1511 | s->signal = 0; | |
1512 | return sig; | |
1fddef4b | 1513 | } |
e9009676 | 1514 | |
ca587a8e | 1515 | /* Tell the remote gdb that the process has exited due to SIG. */ |
9349b4f9 | 1516 | void gdb_signalled(CPUArchState *env, int sig) |
ca587a8e | 1517 | { |
5ca666c7 AF |
1518 | GDBState *s; |
1519 | char buf[4]; | |
ca587a8e | 1520 | |
5ca666c7 AF |
1521 | s = gdbserver_state; |
1522 | if (gdbserver_fd < 0 || s->fd < 0) { | |
1523 | return; | |
1524 | } | |
ca587a8e | 1525 | |
5ca666c7 AF |
1526 | snprintf(buf, sizeof(buf), "X%02x", target_signal_to_gdb(sig)); |
1527 | put_packet(s, buf); | |
ca587a8e | 1528 | } |
1fddef4b | 1529 | |
880a7578 | 1530 | static void gdb_accept(void) |
858693c6 FB |
1531 | { |
1532 | GDBState *s; | |
1533 | struct sockaddr_in sockaddr; | |
1534 | socklen_t len; | |
bf1c852a | 1535 | int fd; |
858693c6 FB |
1536 | |
1537 | for(;;) { | |
1538 | len = sizeof(sockaddr); | |
1539 | fd = accept(gdbserver_fd, (struct sockaddr *)&sockaddr, &len); | |
1540 | if (fd < 0 && errno != EINTR) { | |
1541 | perror("accept"); | |
1542 | return; | |
1543 | } else if (fd >= 0) { | |
40ff6d7e KW |
1544 | #ifndef _WIN32 |
1545 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |
1546 | #endif | |
b4608c04 FB |
1547 | break; |
1548 | } | |
1549 | } | |
858693c6 FB |
1550 | |
1551 | /* set short latency */ | |
bf1c852a | 1552 | socket_set_nodelay(fd); |
3b46e624 | 1553 | |
7267c094 | 1554 | s = g_malloc0(sizeof(GDBState)); |
2e0f2cfb AF |
1555 | s->c_cpu = first_cpu; |
1556 | s->g_cpu = first_cpu; | |
858693c6 | 1557 | s->fd = fd; |
5b50e790 | 1558 | gdb_has_xml = false; |
858693c6 | 1559 | |
880a7578 | 1560 | gdbserver_state = s; |
a2d1ebaf | 1561 | |
858693c6 | 1562 | fcntl(fd, F_SETFL, O_NONBLOCK); |
858693c6 FB |
1563 | } |
1564 | ||
1565 | static int gdbserver_open(int port) | |
1566 | { | |
1567 | struct sockaddr_in sockaddr; | |
1568 | int fd, val, ret; | |
1569 | ||
1570 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1571 | if (fd < 0) { | |
1572 | perror("socket"); | |
1573 | return -1; | |
1574 | } | |
40ff6d7e KW |
1575 | #ifndef _WIN32 |
1576 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |
1577 | #endif | |
858693c6 FB |
1578 | |
1579 | /* allow fast reuse */ | |
1580 | val = 1; | |
9957fc7f | 1581 | qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
858693c6 FB |
1582 | |
1583 | sockaddr.sin_family = AF_INET; | |
1584 | sockaddr.sin_port = htons(port); | |
1585 | sockaddr.sin_addr.s_addr = 0; | |
1586 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
1587 | if (ret < 0) { | |
1588 | perror("bind"); | |
bb16172c | 1589 | close(fd); |
858693c6 FB |
1590 | return -1; |
1591 | } | |
1592 | ret = listen(fd, 0); | |
1593 | if (ret < 0) { | |
1594 | perror("listen"); | |
bb16172c | 1595 | close(fd); |
858693c6 FB |
1596 | return -1; |
1597 | } | |
858693c6 FB |
1598 | return fd; |
1599 | } | |
1600 | ||
1601 | int gdbserver_start(int port) | |
1602 | { | |
1603 | gdbserver_fd = gdbserver_open(port); | |
1604 | if (gdbserver_fd < 0) | |
1605 | return -1; | |
1606 | /* accept connections */ | |
880a7578 | 1607 | gdb_accept(); |
4046d913 PB |
1608 | return 0; |
1609 | } | |
2b1319c8 AJ |
1610 | |
1611 | /* Disable gdb stub for child processes. */ | |
9349b4f9 | 1612 | void gdbserver_fork(CPUArchState *env) |
2b1319c8 AJ |
1613 | { |
1614 | GDBState *s = gdbserver_state; | |
9f6164d6 | 1615 | if (gdbserver_fd < 0 || s->fd < 0) |
2b1319c8 AJ |
1616 | return; |
1617 | close(s->fd); | |
1618 | s->fd = -1; | |
1619 | cpu_breakpoint_remove_all(env, BP_GDB); | |
1620 | cpu_watchpoint_remove_all(env, BP_GDB); | |
1621 | } | |
1fddef4b | 1622 | #else |
aa1f17c1 | 1623 | static int gdb_chr_can_receive(void *opaque) |
4046d913 | 1624 | { |
56aebc89 PB |
1625 | /* We can handle an arbitrarily large amount of data. |
1626 | Pick the maximum packet size, which is as good as anything. */ | |
1627 | return MAX_PACKET_LENGTH; | |
4046d913 PB |
1628 | } |
1629 | ||
aa1f17c1 | 1630 | static void gdb_chr_receive(void *opaque, const uint8_t *buf, int size) |
4046d913 | 1631 | { |
4046d913 PB |
1632 | int i; |
1633 | ||
1634 | for (i = 0; i < size; i++) { | |
880a7578 | 1635 | gdb_read_byte(gdbserver_state, buf[i]); |
4046d913 PB |
1636 | } |
1637 | } | |
1638 | ||
1639 | static void gdb_chr_event(void *opaque, int event) | |
1640 | { | |
1641 | switch (event) { | |
b6b8df56 | 1642 | case CHR_EVENT_OPENED: |
0461d5a6 | 1643 | vm_stop(RUN_STATE_PAUSED); |
5b50e790 | 1644 | gdb_has_xml = false; |
4046d913 PB |
1645 | break; |
1646 | default: | |
1647 | break; | |
1648 | } | |
1649 | } | |
1650 | ||
8a34a0fb AL |
1651 | static void gdb_monitor_output(GDBState *s, const char *msg, int len) |
1652 | { | |
1653 | char buf[MAX_PACKET_LENGTH]; | |
1654 | ||
1655 | buf[0] = 'O'; | |
1656 | if (len > (MAX_PACKET_LENGTH/2) - 1) | |
1657 | len = (MAX_PACKET_LENGTH/2) - 1; | |
1658 | memtohex(buf + 1, (uint8_t *)msg, len); | |
1659 | put_packet(s, buf); | |
1660 | } | |
1661 | ||
1662 | static int gdb_monitor_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1663 | { | |
1664 | const char *p = (const char *)buf; | |
1665 | int max_sz; | |
1666 | ||
1667 | max_sz = (sizeof(gdbserver_state->last_packet) - 2) / 2; | |
1668 | for (;;) { | |
1669 | if (len <= max_sz) { | |
1670 | gdb_monitor_output(gdbserver_state, p, len); | |
1671 | break; | |
1672 | } | |
1673 | gdb_monitor_output(gdbserver_state, p, max_sz); | |
1674 | p += max_sz; | |
1675 | len -= max_sz; | |
1676 | } | |
1677 | return len; | |
1678 | } | |
1679 | ||
59030a8c AL |
1680 | #ifndef _WIN32 |
1681 | static void gdb_sigterm_handler(int signal) | |
1682 | { | |
1354869c | 1683 | if (runstate_is_running()) { |
0461d5a6 | 1684 | vm_stop(RUN_STATE_PAUSED); |
e07bbac5 | 1685 | } |
59030a8c AL |
1686 | } |
1687 | #endif | |
1688 | ||
1689 | int gdbserver_start(const char *device) | |
4046d913 PB |
1690 | { |
1691 | GDBState *s; | |
59030a8c | 1692 | char gdbstub_device_name[128]; |
36556b20 AL |
1693 | CharDriverState *chr = NULL; |
1694 | CharDriverState *mon_chr; | |
cfc3475a | 1695 | |
59030a8c AL |
1696 | if (!device) |
1697 | return -1; | |
1698 | if (strcmp(device, "none") != 0) { | |
1699 | if (strstart(device, "tcp:", NULL)) { | |
1700 | /* enforce required TCP attributes */ | |
1701 | snprintf(gdbstub_device_name, sizeof(gdbstub_device_name), | |
1702 | "%s,nowait,nodelay,server", device); | |
1703 | device = gdbstub_device_name; | |
36556b20 | 1704 | } |
59030a8c AL |
1705 | #ifndef _WIN32 |
1706 | else if (strcmp(device, "stdio") == 0) { | |
1707 | struct sigaction act; | |
4046d913 | 1708 | |
59030a8c AL |
1709 | memset(&act, 0, sizeof(act)); |
1710 | act.sa_handler = gdb_sigterm_handler; | |
1711 | sigaction(SIGINT, &act, NULL); | |
1712 | } | |
1713 | #endif | |
27143a44 | 1714 | chr = qemu_chr_new("gdb", device, NULL); |
36556b20 AL |
1715 | if (!chr) |
1716 | return -1; | |
1717 | ||
456d6069 | 1718 | qemu_chr_fe_claim_no_fail(chr); |
36556b20 AL |
1719 | qemu_chr_add_handlers(chr, gdb_chr_can_receive, gdb_chr_receive, |
1720 | gdb_chr_event, NULL); | |
cfc3475a PB |
1721 | } |
1722 | ||
36556b20 AL |
1723 | s = gdbserver_state; |
1724 | if (!s) { | |
7267c094 | 1725 | s = g_malloc0(sizeof(GDBState)); |
36556b20 | 1726 | gdbserver_state = s; |
4046d913 | 1727 | |
36556b20 AL |
1728 | qemu_add_vm_change_state_handler(gdb_vm_state_change, NULL); |
1729 | ||
1730 | /* Initialize a monitor terminal for gdb */ | |
7267c094 | 1731 | mon_chr = g_malloc0(sizeof(*mon_chr)); |
36556b20 AL |
1732 | mon_chr->chr_write = gdb_monitor_write; |
1733 | monitor_init(mon_chr, 0); | |
1734 | } else { | |
1735 | if (s->chr) | |
70f24fb6 | 1736 | qemu_chr_delete(s->chr); |
36556b20 AL |
1737 | mon_chr = s->mon_chr; |
1738 | memset(s, 0, sizeof(GDBState)); | |
1739 | } | |
2e0f2cfb AF |
1740 | s->c_cpu = first_cpu; |
1741 | s->g_cpu = first_cpu; | |
4046d913 | 1742 | s->chr = chr; |
36556b20 AL |
1743 | s->state = chr ? RS_IDLE : RS_INACTIVE; |
1744 | s->mon_chr = mon_chr; | |
cdb432b2 | 1745 | s->current_syscall_cb = NULL; |
8a34a0fb | 1746 | |
b4608c04 FB |
1747 | return 0; |
1748 | } | |
4046d913 | 1749 | #endif |