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Commit | Line | Data |
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b4608c04 FB |
1 | /* |
2 | * gdb server stub | |
5fafdf24 | 3 | * |
42a09596 AB |
4 | * This implements a subset of the remote protocol as described in: |
5 | * | |
6 | * https://sourceware.org/gdb/onlinedocs/gdb/Remote-Protocol.html | |
7 | * | |
3475187d | 8 | * Copyright (c) 2003-2005 Fabrice Bellard |
b4608c04 FB |
9 | * |
10 | * This library is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU Lesser General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This library is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * Lesser General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 21 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
42a09596 AB |
22 | * |
23 | * SPDX-License-Identifier: LGPL-2.0+ | |
b4608c04 | 24 | */ |
856dfd8a | 25 | |
d38ea87a | 26 | #include "qemu/osdep.h" |
da34e65c | 27 | #include "qapi/error.h" |
508b4ecc | 28 | #include "qemu/error-report.h" |
856dfd8a | 29 | #include "qemu/ctype.h" |
f348b6d1 | 30 | #include "qemu/cutils.h" |
0b8fa32f | 31 | #include "qemu/module.h" |
243af022 | 32 | #include "trace/trace-root.h" |
85b4fa0c | 33 | #include "exec/gdbstub.h" |
f348b6d1 | 34 | #ifdef CONFIG_USER_ONLY |
1fddef4b FB |
35 | #include "qemu.h" |
36 | #else | |
83c9089e | 37 | #include "monitor/monitor.h" |
8228e353 | 38 | #include "chardev/char.h" |
4d43a603 | 39 | #include "chardev/char-fe.h" |
8f468636 | 40 | #include "hw/cpu/cluster.h" |
5cc8767d | 41 | #include "hw/boards.h" |
1fddef4b | 42 | #endif |
67b915a5 | 43 | |
56aebc89 PB |
44 | #define MAX_PACKET_LENGTH 4096 |
45 | ||
1de7afc9 | 46 | #include "qemu/sockets.h" |
b3946626 | 47 | #include "sysemu/hw_accel.h" |
9c17d615 | 48 | #include "sysemu/kvm.h" |
54d31236 | 49 | #include "sysemu/runstate.h" |
6b5fe137 | 50 | #include "semihosting/semihost.h" |
63c91552 | 51 | #include "exec/exec-all.h" |
fda8458b | 52 | #include "sysemu/replay.h" |
ca587a8e | 53 | |
a3919386 JK |
54 | #ifdef CONFIG_USER_ONLY |
55 | #define GDB_ATTACHED "0" | |
56 | #else | |
57 | #define GDB_ATTACHED "1" | |
58 | #endif | |
59 | ||
ab4752ec JD |
60 | #ifndef CONFIG_USER_ONLY |
61 | static int phy_memory_mode; | |
62 | #endif | |
63 | ||
f3659eee AF |
64 | static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr, |
65 | uint8_t *buf, int len, bool is_write) | |
44520db1 | 66 | { |
ab4752ec | 67 | CPUClass *cc; |
f3659eee | 68 | |
ab4752ec JD |
69 | #ifndef CONFIG_USER_ONLY |
70 | if (phy_memory_mode) { | |
71 | if (is_write) { | |
72 | cpu_physical_memory_write(addr, buf, len); | |
73 | } else { | |
74 | cpu_physical_memory_read(addr, buf, len); | |
75 | } | |
76 | return 0; | |
77 | } | |
78 | #endif | |
79 | ||
80 | cc = CPU_GET_CLASS(cpu); | |
f3659eee AF |
81 | if (cc->memory_rw_debug) { |
82 | return cc->memory_rw_debug(cpu, addr, buf, len, is_write); | |
83 | } | |
84 | return cpu_memory_rw_debug(cpu, addr, buf, len, is_write); | |
44520db1 | 85 | } |
ca587a8e | 86 | |
d2a6c857 AB |
87 | /* Return the GDB index for a given vCPU state. |
88 | * | |
89 | * For user mode this is simply the thread id. In system mode GDB | |
90 | * numbers CPUs from 1 as 0 is reserved as an "any cpu" index. | |
91 | */ | |
92 | static inline int cpu_gdb_index(CPUState *cpu) | |
93 | { | |
94 | #if defined(CONFIG_USER_ONLY) | |
bd88c780 | 95 | TaskState *ts = (TaskState *) cpu->opaque; |
a8e537fa | 96 | return ts ? ts->ts_tid : -1; |
d2a6c857 AB |
97 | #else |
98 | return cpu->cpu_index + 1; | |
99 | #endif | |
100 | } | |
101 | ||
ca587a8e AJ |
102 | enum { |
103 | GDB_SIGNAL_0 = 0, | |
104 | GDB_SIGNAL_INT = 2, | |
425189a8 | 105 | GDB_SIGNAL_QUIT = 3, |
ca587a8e | 106 | GDB_SIGNAL_TRAP = 5, |
425189a8 JK |
107 | GDB_SIGNAL_ABRT = 6, |
108 | GDB_SIGNAL_ALRM = 14, | |
109 | GDB_SIGNAL_IO = 23, | |
110 | GDB_SIGNAL_XCPU = 24, | |
ca587a8e AJ |
111 | GDB_SIGNAL_UNKNOWN = 143 |
112 | }; | |
113 | ||
114 | #ifdef CONFIG_USER_ONLY | |
115 | ||
116 | /* Map target signal numbers to GDB protocol signal numbers and vice | |
117 | * versa. For user emulation's currently supported systems, we can | |
118 | * assume most signals are defined. | |
119 | */ | |
120 | ||
121 | static int gdb_signal_table[] = { | |
122 | 0, | |
123 | TARGET_SIGHUP, | |
124 | TARGET_SIGINT, | |
125 | TARGET_SIGQUIT, | |
126 | TARGET_SIGILL, | |
127 | TARGET_SIGTRAP, | |
128 | TARGET_SIGABRT, | |
129 | -1, /* SIGEMT */ | |
130 | TARGET_SIGFPE, | |
131 | TARGET_SIGKILL, | |
132 | TARGET_SIGBUS, | |
133 | TARGET_SIGSEGV, | |
134 | TARGET_SIGSYS, | |
135 | TARGET_SIGPIPE, | |
136 | TARGET_SIGALRM, | |
137 | TARGET_SIGTERM, | |
138 | TARGET_SIGURG, | |
139 | TARGET_SIGSTOP, | |
140 | TARGET_SIGTSTP, | |
141 | TARGET_SIGCONT, | |
142 | TARGET_SIGCHLD, | |
143 | TARGET_SIGTTIN, | |
144 | TARGET_SIGTTOU, | |
145 | TARGET_SIGIO, | |
146 | TARGET_SIGXCPU, | |
147 | TARGET_SIGXFSZ, | |
148 | TARGET_SIGVTALRM, | |
149 | TARGET_SIGPROF, | |
150 | TARGET_SIGWINCH, | |
151 | -1, /* SIGLOST */ | |
152 | TARGET_SIGUSR1, | |
153 | TARGET_SIGUSR2, | |
c72d5bf8 | 154 | #ifdef TARGET_SIGPWR |
ca587a8e | 155 | TARGET_SIGPWR, |
c72d5bf8 BS |
156 | #else |
157 | -1, | |
158 | #endif | |
ca587a8e AJ |
159 | -1, /* SIGPOLL */ |
160 | -1, | |
161 | -1, | |
162 | -1, | |
163 | -1, | |
164 | -1, | |
165 | -1, | |
166 | -1, | |
167 | -1, | |
168 | -1, | |
169 | -1, | |
170 | -1, | |
c72d5bf8 | 171 | #ifdef __SIGRTMIN |
ca587a8e AJ |
172 | __SIGRTMIN + 1, |
173 | __SIGRTMIN + 2, | |
174 | __SIGRTMIN + 3, | |
175 | __SIGRTMIN + 4, | |
176 | __SIGRTMIN + 5, | |
177 | __SIGRTMIN + 6, | |
178 | __SIGRTMIN + 7, | |
179 | __SIGRTMIN + 8, | |
180 | __SIGRTMIN + 9, | |
181 | __SIGRTMIN + 10, | |
182 | __SIGRTMIN + 11, | |
183 | __SIGRTMIN + 12, | |
184 | __SIGRTMIN + 13, | |
185 | __SIGRTMIN + 14, | |
186 | __SIGRTMIN + 15, | |
187 | __SIGRTMIN + 16, | |
188 | __SIGRTMIN + 17, | |
189 | __SIGRTMIN + 18, | |
190 | __SIGRTMIN + 19, | |
191 | __SIGRTMIN + 20, | |
192 | __SIGRTMIN + 21, | |
193 | __SIGRTMIN + 22, | |
194 | __SIGRTMIN + 23, | |
195 | __SIGRTMIN + 24, | |
196 | __SIGRTMIN + 25, | |
197 | __SIGRTMIN + 26, | |
198 | __SIGRTMIN + 27, | |
199 | __SIGRTMIN + 28, | |
200 | __SIGRTMIN + 29, | |
201 | __SIGRTMIN + 30, | |
202 | __SIGRTMIN + 31, | |
203 | -1, /* SIGCANCEL */ | |
204 | __SIGRTMIN, | |
205 | __SIGRTMIN + 32, | |
206 | __SIGRTMIN + 33, | |
207 | __SIGRTMIN + 34, | |
208 | __SIGRTMIN + 35, | |
209 | __SIGRTMIN + 36, | |
210 | __SIGRTMIN + 37, | |
211 | __SIGRTMIN + 38, | |
212 | __SIGRTMIN + 39, | |
213 | __SIGRTMIN + 40, | |
214 | __SIGRTMIN + 41, | |
215 | __SIGRTMIN + 42, | |
216 | __SIGRTMIN + 43, | |
217 | __SIGRTMIN + 44, | |
218 | __SIGRTMIN + 45, | |
219 | __SIGRTMIN + 46, | |
220 | __SIGRTMIN + 47, | |
221 | __SIGRTMIN + 48, | |
222 | __SIGRTMIN + 49, | |
223 | __SIGRTMIN + 50, | |
224 | __SIGRTMIN + 51, | |
225 | __SIGRTMIN + 52, | |
226 | __SIGRTMIN + 53, | |
227 | __SIGRTMIN + 54, | |
228 | __SIGRTMIN + 55, | |
229 | __SIGRTMIN + 56, | |
230 | __SIGRTMIN + 57, | |
231 | __SIGRTMIN + 58, | |
232 | __SIGRTMIN + 59, | |
233 | __SIGRTMIN + 60, | |
234 | __SIGRTMIN + 61, | |
235 | __SIGRTMIN + 62, | |
236 | __SIGRTMIN + 63, | |
237 | __SIGRTMIN + 64, | |
238 | __SIGRTMIN + 65, | |
239 | __SIGRTMIN + 66, | |
240 | __SIGRTMIN + 67, | |
241 | __SIGRTMIN + 68, | |
242 | __SIGRTMIN + 69, | |
243 | __SIGRTMIN + 70, | |
244 | __SIGRTMIN + 71, | |
245 | __SIGRTMIN + 72, | |
246 | __SIGRTMIN + 73, | |
247 | __SIGRTMIN + 74, | |
248 | __SIGRTMIN + 75, | |
249 | __SIGRTMIN + 76, | |
250 | __SIGRTMIN + 77, | |
251 | __SIGRTMIN + 78, | |
252 | __SIGRTMIN + 79, | |
253 | __SIGRTMIN + 80, | |
254 | __SIGRTMIN + 81, | |
255 | __SIGRTMIN + 82, | |
256 | __SIGRTMIN + 83, | |
257 | __SIGRTMIN + 84, | |
258 | __SIGRTMIN + 85, | |
259 | __SIGRTMIN + 86, | |
260 | __SIGRTMIN + 87, | |
261 | __SIGRTMIN + 88, | |
262 | __SIGRTMIN + 89, | |
263 | __SIGRTMIN + 90, | |
264 | __SIGRTMIN + 91, | |
265 | __SIGRTMIN + 92, | |
266 | __SIGRTMIN + 93, | |
267 | __SIGRTMIN + 94, | |
268 | __SIGRTMIN + 95, | |
269 | -1, /* SIGINFO */ | |
270 | -1, /* UNKNOWN */ | |
271 | -1, /* DEFAULT */ | |
272 | -1, | |
273 | -1, | |
274 | -1, | |
275 | -1, | |
276 | -1, | |
277 | -1 | |
c72d5bf8 | 278 | #endif |
ca587a8e | 279 | }; |
8f447cc7 | 280 | #else |
ca587a8e AJ |
281 | /* In system mode we only need SIGINT and SIGTRAP; other signals |
282 | are not yet supported. */ | |
283 | ||
284 | enum { | |
285 | TARGET_SIGINT = 2, | |
286 | TARGET_SIGTRAP = 5 | |
287 | }; | |
288 | ||
289 | static int gdb_signal_table[] = { | |
290 | -1, | |
291 | -1, | |
292 | TARGET_SIGINT, | |
293 | -1, | |
294 | -1, | |
295 | TARGET_SIGTRAP | |
296 | }; | |
297 | #endif | |
298 | ||
299 | #ifdef CONFIG_USER_ONLY | |
300 | static int target_signal_to_gdb (int sig) | |
301 | { | |
302 | int i; | |
303 | for (i = 0; i < ARRAY_SIZE (gdb_signal_table); i++) | |
304 | if (gdb_signal_table[i] == sig) | |
305 | return i; | |
306 | return GDB_SIGNAL_UNKNOWN; | |
307 | } | |
8f447cc7 | 308 | #endif |
b4608c04 | 309 | |
ca587a8e AJ |
310 | static int gdb_signal_to_target (int sig) |
311 | { | |
312 | if (sig < ARRAY_SIZE (gdb_signal_table)) | |
313 | return gdb_signal_table[sig]; | |
314 | else | |
315 | return -1; | |
316 | } | |
317 | ||
56aebc89 PB |
318 | typedef struct GDBRegisterState { |
319 | int base_reg; | |
320 | int num_regs; | |
a010bdbe AB |
321 | gdb_get_reg_cb get_reg; |
322 | gdb_set_reg_cb set_reg; | |
56aebc89 PB |
323 | const char *xml; |
324 | struct GDBRegisterState *next; | |
325 | } GDBRegisterState; | |
326 | ||
8f468636 LM |
327 | typedef struct GDBProcess { |
328 | uint32_t pid; | |
329 | bool attached; | |
c145eeae LM |
330 | |
331 | char target_xml[1024]; | |
8f468636 LM |
332 | } GDBProcess; |
333 | ||
858693c6 | 334 | enum RSState { |
36556b20 | 335 | RS_INACTIVE, |
858693c6 FB |
336 | RS_IDLE, |
337 | RS_GETLINE, | |
4bf43122 DG |
338 | RS_GETLINE_ESC, |
339 | RS_GETLINE_RLE, | |
858693c6 FB |
340 | RS_CHKSUM1, |
341 | RS_CHKSUM2, | |
342 | }; | |
858693c6 | 343 | typedef struct GDBState { |
8d98c445 | 344 | bool init; /* have we been initialised? */ |
2e0f2cfb AF |
345 | CPUState *c_cpu; /* current CPU for step/continue ops */ |
346 | CPUState *g_cpu; /* current CPU for other ops */ | |
52f34623 | 347 | CPUState *query_cpu; /* for q{f|s}ThreadInfo */ |
41625033 | 348 | enum RSState state; /* parsing state */ |
56aebc89 | 349 | char line_buf[MAX_PACKET_LENGTH]; |
858693c6 | 350 | int line_buf_index; |
4bf43122 DG |
351 | int line_sum; /* running checksum */ |
352 | int line_csum; /* checksum at the end of the packet */ | |
d116e813 | 353 | GByteArray *last_packet; |
1f487ee9 | 354 | int signal; |
41625033 | 355 | #ifdef CONFIG_USER_ONLY |
4046d913 | 356 | int fd; |
fcedd920 | 357 | char *socket_path; |
41625033 | 358 | int running_state; |
4046d913 | 359 | #else |
32a6ebec | 360 | CharBackend chr; |
0ec7b3e7 | 361 | Chardev *mon_chr; |
41625033 | 362 | #endif |
8f468636 LM |
363 | bool multiprocess; |
364 | GDBProcess *processes; | |
365 | int process_num; | |
cdb432b2 MI |
366 | char syscall_buf[256]; |
367 | gdb_syscall_complete_cb current_syscall_cb; | |
308f9e88 | 368 | GString *str_buf; |
4a25f1b9 | 369 | GByteArray *mem_buf; |
ecd39d62 ML |
370 | int sstep_flags; |
371 | int supported_sstep_flags; | |
858693c6 | 372 | } GDBState; |
b4608c04 | 373 | |
8d98c445 AB |
374 | static GDBState gdbserver_state; |
375 | ||
376 | static void init_gdbserver_state(void) | |
377 | { | |
378 | g_assert(!gdbserver_state.init); | |
379 | memset(&gdbserver_state, 0, sizeof(GDBState)); | |
380 | gdbserver_state.init = true; | |
308f9e88 | 381 | gdbserver_state.str_buf = g_string_new(NULL); |
4a25f1b9 | 382 | gdbserver_state.mem_buf = g_byte_array_sized_new(MAX_PACKET_LENGTH); |
d116e813 | 383 | gdbserver_state.last_packet = g_byte_array_sized_new(MAX_PACKET_LENGTH + 4); |
ecd39d62 ML |
384 | |
385 | /* | |
386 | * In replay mode all events will come from the log and can't be | |
387 | * suppressed otherwise we would break determinism. However as those | |
388 | * events are tied to the number of executed instructions we won't see | |
389 | * them occurring every time we single step. | |
390 | */ | |
391 | if (replay_mode != REPLAY_MODE_NONE) { | |
392 | gdbserver_state.supported_sstep_flags = SSTEP_ENABLE; | |
12bc5b4c ML |
393 | } else if (kvm_enabled()) { |
394 | gdbserver_state.supported_sstep_flags = kvm_get_supported_sstep_flags(); | |
ecd39d62 ML |
395 | } else { |
396 | gdbserver_state.supported_sstep_flags = | |
397 | SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER; | |
398 | } | |
399 | ||
400 | /* | |
401 | * By default use no IRQs and no timers while single stepping so as to | |
402 | * make single stepping like an ICE HW step. | |
403 | */ | |
12bc5b4c ML |
404 | gdbserver_state.sstep_flags = SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER; |
405 | gdbserver_state.sstep_flags &= gdbserver_state.supported_sstep_flags; | |
ecd39d62 | 406 | |
8d98c445 AB |
407 | } |
408 | ||
409 | #ifndef CONFIG_USER_ONLY | |
410 | static void reset_gdbserver_state(void) | |
411 | { | |
412 | g_free(gdbserver_state.processes); | |
413 | gdbserver_state.processes = NULL; | |
414 | gdbserver_state.process_num = 0; | |
415 | } | |
416 | #endif | |
880a7578 | 417 | |
5b50e790 | 418 | bool gdb_has_xml; |
56aebc89 | 419 | |
1fddef4b | 420 | #ifdef CONFIG_USER_ONLY |
4046d913 | 421 | |
a346af3e | 422 | static int get_char(void) |
b4608c04 FB |
423 | { |
424 | uint8_t ch; | |
425 | int ret; | |
426 | ||
427 | for(;;) { | |
e7b79428 | 428 | ret = recv(gdbserver_state.fd, &ch, 1, 0); |
b4608c04 | 429 | if (ret < 0) { |
1f487ee9 | 430 | if (errno == ECONNRESET) |
a346af3e | 431 | gdbserver_state.fd = -1; |
5819e3e0 | 432 | if (errno != EINTR) |
b4608c04 FB |
433 | return -1; |
434 | } else if (ret == 0) { | |
a346af3e AB |
435 | close(gdbserver_state.fd); |
436 | gdbserver_state.fd = -1; | |
b4608c04 FB |
437 | return -1; |
438 | } else { | |
439 | break; | |
440 | } | |
441 | } | |
442 | return ch; | |
443 | } | |
4046d913 | 444 | #endif |
b4608c04 | 445 | |
ebf1b4cb PM |
446 | /* |
447 | * Return true if there is a GDB currently connected to the stub | |
448 | * and attached to a CPU | |
449 | */ | |
450 | static bool gdb_attached(void) | |
451 | { | |
452 | return gdbserver_state.init && gdbserver_state.c_cpu; | |
453 | } | |
454 | ||
654efcf3 | 455 | static enum { |
a2d1ebaf PB |
456 | GDB_SYS_UNKNOWN, |
457 | GDB_SYS_ENABLED, | |
458 | GDB_SYS_DISABLED, | |
459 | } gdb_syscall_mode; | |
460 | ||
a38bb079 | 461 | /* Decide if either remote gdb syscalls or native file IO should be used. */ |
a2d1ebaf PB |
462 | int use_gdb_syscalls(void) |
463 | { | |
cfe67cef LA |
464 | SemihostingTarget target = semihosting_get_target(); |
465 | if (target == SEMIHOSTING_TARGET_NATIVE) { | |
a38bb079 LI |
466 | /* -semihosting-config target=native */ |
467 | return false; | |
cfe67cef | 468 | } else if (target == SEMIHOSTING_TARGET_GDB) { |
a38bb079 LI |
469 | /* -semihosting-config target=gdb */ |
470 | return true; | |
471 | } | |
472 | ||
473 | /* -semihosting-config target=auto */ | |
474 | /* On the first call check if gdb is connected and remember. */ | |
a2d1ebaf | 475 | if (gdb_syscall_mode == GDB_SYS_UNKNOWN) { |
ebf1b4cb | 476 | gdb_syscall_mode = gdb_attached() ? GDB_SYS_ENABLED : GDB_SYS_DISABLED; |
a2d1ebaf PB |
477 | } |
478 | return gdb_syscall_mode == GDB_SYS_ENABLED; | |
479 | } | |
480 | ||
ed12f5b4 AB |
481 | static bool stub_can_reverse(void) |
482 | { | |
483 | #ifdef CONFIG_USER_ONLY | |
484 | return false; | |
485 | #else | |
486 | return replay_mode == REPLAY_MODE_PLAY; | |
487 | #endif | |
488 | } | |
489 | ||
ba70a624 | 490 | /* Resume execution. */ |
a346af3e | 491 | static inline void gdb_continue(void) |
ba70a624 | 492 | { |
5c9522b3 | 493 | |
ba70a624 | 494 | #ifdef CONFIG_USER_ONLY |
a346af3e | 495 | gdbserver_state.running_state = 1; |
5c9522b3 | 496 | trace_gdbstub_op_continue(); |
ba70a624 | 497 | #else |
26ac7a31 | 498 | if (!runstate_needs_reset()) { |
5c9522b3 | 499 | trace_gdbstub_op_continue(); |
87f25c12 PB |
500 | vm_start(); |
501 | } | |
ba70a624 EI |
502 | #endif |
503 | } | |
504 | ||
544177ad CI |
505 | /* |
506 | * Resume execution, per CPU actions. For user-mode emulation it's | |
507 | * equivalent to gdb_continue. | |
508 | */ | |
a346af3e | 509 | static int gdb_continue_partial(char *newstates) |
544177ad CI |
510 | { |
511 | CPUState *cpu; | |
512 | int res = 0; | |
513 | #ifdef CONFIG_USER_ONLY | |
514 | /* | |
515 | * This is not exactly accurate, but it's an improvement compared to the | |
516 | * previous situation, where only one CPU would be single-stepped. | |
517 | */ | |
518 | CPU_FOREACH(cpu) { | |
519 | if (newstates[cpu->cpu_index] == 's') { | |
5c9522b3 | 520 | trace_gdbstub_op_stepping(cpu->cpu_index); |
ecd39d62 | 521 | cpu_single_step(cpu, gdbserver_state.sstep_flags); |
544177ad CI |
522 | } |
523 | } | |
a346af3e | 524 | gdbserver_state.running_state = 1; |
544177ad CI |
525 | #else |
526 | int flag = 0; | |
527 | ||
528 | if (!runstate_needs_reset()) { | |
d7482ffe IS |
529 | bool step_requested = false; |
530 | CPU_FOREACH(cpu) { | |
531 | if (newstates[cpu->cpu_index] == 's') { | |
532 | step_requested = true; | |
533 | break; | |
534 | } | |
535 | } | |
536 | ||
537 | if (vm_prepare_start(step_requested)) { | |
544177ad CI |
538 | return 0; |
539 | } | |
540 | ||
541 | CPU_FOREACH(cpu) { | |
542 | switch (newstates[cpu->cpu_index]) { | |
543 | case 0: | |
544 | case 1: | |
545 | break; /* nothing to do here */ | |
546 | case 's': | |
5c9522b3 | 547 | trace_gdbstub_op_stepping(cpu->cpu_index); |
ecd39d62 | 548 | cpu_single_step(cpu, gdbserver_state.sstep_flags); |
544177ad CI |
549 | cpu_resume(cpu); |
550 | flag = 1; | |
551 | break; | |
552 | case 'c': | |
5c9522b3 | 553 | trace_gdbstub_op_continue_cpu(cpu->cpu_index); |
544177ad CI |
554 | cpu_resume(cpu); |
555 | flag = 1; | |
556 | break; | |
557 | default: | |
558 | res = -1; | |
559 | break; | |
560 | } | |
561 | } | |
562 | } | |
563 | if (flag) { | |
564 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true); | |
565 | } | |
566 | #endif | |
567 | return res; | |
568 | } | |
569 | ||
a346af3e | 570 | static void put_buffer(const uint8_t *buf, int len) |
b4608c04 | 571 | { |
4046d913 | 572 | #ifdef CONFIG_USER_ONLY |
b4608c04 FB |
573 | int ret; |
574 | ||
575 | while (len > 0) { | |
a346af3e | 576 | ret = send(gdbserver_state.fd, buf, len, 0); |
b4608c04 | 577 | if (ret < 0) { |
5819e3e0 | 578 | if (errno != EINTR) |
b4608c04 FB |
579 | return; |
580 | } else { | |
581 | buf += ret; | |
582 | len -= ret; | |
583 | } | |
584 | } | |
4046d913 | 585 | #else |
6ab3fc32 DB |
586 | /* XXX this blocks entire thread. Rewrite to use |
587 | * qemu_chr_fe_write and background I/O callbacks */ | |
a346af3e | 588 | qemu_chr_fe_write_all(&gdbserver_state.chr, buf, len); |
4046d913 | 589 | #endif |
b4608c04 FB |
590 | } |
591 | ||
592 | static inline int fromhex(int v) | |
593 | { | |
594 | if (v >= '0' && v <= '9') | |
595 | return v - '0'; | |
596 | else if (v >= 'A' && v <= 'F') | |
597 | return v - 'A' + 10; | |
598 | else if (v >= 'a' && v <= 'f') | |
599 | return v - 'a' + 10; | |
600 | else | |
601 | return 0; | |
602 | } | |
603 | ||
604 | static inline int tohex(int v) | |
605 | { | |
606 | if (v < 10) | |
607 | return v + '0'; | |
608 | else | |
609 | return v - 10 + 'a'; | |
610 | } | |
611 | ||
9005774b | 612 | /* writes 2*len+1 bytes in buf */ |
308f9e88 | 613 | static void memtohex(GString *buf, const uint8_t *mem, int len) |
b4608c04 FB |
614 | { |
615 | int i, c; | |
b4608c04 FB |
616 | for(i = 0; i < len; i++) { |
617 | c = mem[i]; | |
308f9e88 AB |
618 | g_string_append_c(buf, tohex(c >> 4)); |
619 | g_string_append_c(buf, tohex(c & 0xf)); | |
b4608c04 | 620 | } |
308f9e88 | 621 | g_string_append_c(buf, '\0'); |
b4608c04 FB |
622 | } |
623 | ||
4a25f1b9 | 624 | static void hextomem(GByteArray *mem, const char *buf, int len) |
b4608c04 FB |
625 | { |
626 | int i; | |
627 | ||
628 | for(i = 0; i < len; i++) { | |
4a25f1b9 AB |
629 | guint8 byte = fromhex(buf[0]) << 4 | fromhex(buf[1]); |
630 | g_byte_array_append(mem, &byte, 1); | |
b4608c04 FB |
631 | buf += 2; |
632 | } | |
633 | } | |
634 | ||
5c9522b3 DG |
635 | static void hexdump(const char *buf, int len, |
636 | void (*trace_fn)(size_t ofs, char const *text)) | |
637 | { | |
638 | char line_buffer[3 * 16 + 4 + 16 + 1]; | |
639 | ||
640 | size_t i; | |
641 | for (i = 0; i < len || (i & 0xF); ++i) { | |
642 | size_t byte_ofs = i & 15; | |
643 | ||
644 | if (byte_ofs == 0) { | |
645 | memset(line_buffer, ' ', 3 * 16 + 4 + 16); | |
646 | line_buffer[3 * 16 + 4 + 16] = 0; | |
647 | } | |
648 | ||
649 | size_t col_group = (i >> 2) & 3; | |
650 | size_t hex_col = byte_ofs * 3 + col_group; | |
651 | size_t txt_col = 3 * 16 + 4 + byte_ofs; | |
652 | ||
653 | if (i < len) { | |
654 | char value = buf[i]; | |
655 | ||
656 | line_buffer[hex_col + 0] = tohex((value >> 4) & 0xF); | |
657 | line_buffer[hex_col + 1] = tohex((value >> 0) & 0xF); | |
658 | line_buffer[txt_col + 0] = (value >= ' ' && value < 127) | |
659 | ? value | |
660 | : '.'; | |
661 | } | |
662 | ||
663 | if (byte_ofs == 0xF) | |
664 | trace_fn(i & -16, line_buffer); | |
665 | } | |
666 | } | |
667 | ||
b4608c04 | 668 | /* return -1 if error, 0 if OK */ |
a346af3e | 669 | static int put_packet_binary(const char *buf, int len, bool dump) |
b4608c04 | 670 | { |
56aebc89 | 671 | int csum, i; |
d116e813 | 672 | uint8_t footer[3]; |
b4608c04 | 673 | |
5c9522b3 DG |
674 | if (dump && trace_event_get_state_backends(TRACE_GDBSTUB_IO_BINARYREPLY)) { |
675 | hexdump(buf, len, trace_gdbstub_io_binaryreply); | |
676 | } | |
677 | ||
b4608c04 | 678 | for(;;) { |
d116e813 DH |
679 | g_byte_array_set_size(gdbserver_state.last_packet, 0); |
680 | g_byte_array_append(gdbserver_state.last_packet, | |
681 | (const uint8_t *) "$", 1); | |
682 | g_byte_array_append(gdbserver_state.last_packet, | |
683 | (const uint8_t *) buf, len); | |
b4608c04 FB |
684 | csum = 0; |
685 | for(i = 0; i < len; i++) { | |
686 | csum += buf[i]; | |
687 | } | |
d116e813 DH |
688 | footer[0] = '#'; |
689 | footer[1] = tohex((csum >> 4) & 0xf); | |
690 | footer[2] = tohex((csum) & 0xf); | |
691 | g_byte_array_append(gdbserver_state.last_packet, footer, 3); | |
b4608c04 | 692 | |
d116e813 DH |
693 | put_buffer(gdbserver_state.last_packet->data, |
694 | gdbserver_state.last_packet->len); | |
b4608c04 | 695 | |
4046d913 | 696 | #ifdef CONFIG_USER_ONLY |
a346af3e | 697 | i = get_char(); |
4046d913 | 698 | if (i < 0) |
b4608c04 | 699 | return -1; |
4046d913 | 700 | if (i == '+') |
b4608c04 | 701 | break; |
4046d913 PB |
702 | #else |
703 | break; | |
704 | #endif | |
b4608c04 FB |
705 | } |
706 | return 0; | |
707 | } | |
708 | ||
56aebc89 | 709 | /* return -1 if error, 0 if OK */ |
a346af3e | 710 | static int put_packet(const char *buf) |
56aebc89 | 711 | { |
5c9522b3 | 712 | trace_gdbstub_io_reply(buf); |
79808573 | 713 | |
a346af3e | 714 | return put_packet_binary(buf, strlen(buf), false); |
56aebc89 PB |
715 | } |
716 | ||
308f9e88 AB |
717 | static void put_strbuf(void) |
718 | { | |
719 | put_packet(gdbserver_state.str_buf->str); | |
720 | } | |
721 | ||
56aebc89 | 722 | /* Encode data using the encoding for 'x' packets. */ |
308f9e88 | 723 | static void memtox(GString *buf, const char *mem, int len) |
56aebc89 | 724 | { |
56aebc89 PB |
725 | char c; |
726 | ||
727 | while (len--) { | |
728 | c = *(mem++); | |
729 | switch (c) { | |
730 | case '#': case '$': case '*': case '}': | |
308f9e88 AB |
731 | g_string_append_c(buf, '}'); |
732 | g_string_append_c(buf, c ^ 0x20); | |
56aebc89 PB |
733 | break; |
734 | default: | |
308f9e88 | 735 | g_string_append_c(buf, c); |
56aebc89 PB |
736 | break; |
737 | } | |
738 | } | |
56aebc89 | 739 | } |
f1ccf904 | 740 | |
a346af3e | 741 | static uint32_t gdb_get_cpu_pid(CPUState *cpu) |
1a227336 | 742 | { |
46f5abc0 PM |
743 | /* TODO: In user mode, we should use the task state PID */ |
744 | if (cpu->cluster_index == UNASSIGNED_CLUSTER_INDEX) { | |
1a227336 | 745 | /* Return the default process' PID */ |
a346af3e AB |
746 | int index = gdbserver_state.process_num - 1; |
747 | return gdbserver_state.processes[index].pid; | |
1a227336 | 748 | } |
46f5abc0 | 749 | return cpu->cluster_index + 1; |
1a227336 LM |
750 | } |
751 | ||
a346af3e | 752 | static GDBProcess *gdb_get_process(uint32_t pid) |
7d8c87da LM |
753 | { |
754 | int i; | |
755 | ||
756 | if (!pid) { | |
757 | /* 0 means any process, we take the first one */ | |
a346af3e | 758 | return &gdbserver_state.processes[0]; |
7d8c87da LM |
759 | } |
760 | ||
a346af3e AB |
761 | for (i = 0; i < gdbserver_state.process_num; i++) { |
762 | if (gdbserver_state.processes[i].pid == pid) { | |
763 | return &gdbserver_state.processes[i]; | |
7d8c87da LM |
764 | } |
765 | } | |
766 | ||
767 | return NULL; | |
768 | } | |
769 | ||
a346af3e | 770 | static GDBProcess *gdb_get_cpu_process(CPUState *cpu) |
7d8c87da | 771 | { |
a346af3e | 772 | return gdb_get_process(gdb_get_cpu_pid(cpu)); |
7d8c87da LM |
773 | } |
774 | ||
775 | static CPUState *find_cpu(uint32_t thread_id) | |
776 | { | |
777 | CPUState *cpu; | |
778 | ||
779 | CPU_FOREACH(cpu) { | |
780 | if (cpu_gdb_index(cpu) == thread_id) { | |
781 | return cpu; | |
782 | } | |
783 | } | |
784 | ||
785 | return NULL; | |
786 | } | |
787 | ||
a346af3e | 788 | static CPUState *get_first_cpu_in_process(GDBProcess *process) |
e40e5204 LM |
789 | { |
790 | CPUState *cpu; | |
791 | ||
792 | CPU_FOREACH(cpu) { | |
a346af3e | 793 | if (gdb_get_cpu_pid(cpu) == process->pid) { |
e40e5204 LM |
794 | return cpu; |
795 | } | |
796 | } | |
797 | ||
798 | return NULL; | |
799 | } | |
800 | ||
a346af3e | 801 | static CPUState *gdb_next_cpu_in_process(CPUState *cpu) |
e40e5204 | 802 | { |
a346af3e | 803 | uint32_t pid = gdb_get_cpu_pid(cpu); |
e40e5204 LM |
804 | cpu = CPU_NEXT(cpu); |
805 | ||
806 | while (cpu) { | |
a346af3e | 807 | if (gdb_get_cpu_pid(cpu) == pid) { |
e40e5204 LM |
808 | break; |
809 | } | |
810 | ||
811 | cpu = CPU_NEXT(cpu); | |
812 | } | |
813 | ||
814 | return cpu; | |
815 | } | |
816 | ||
e40e5204 | 817 | /* Return the cpu following @cpu, while ignoring unattached processes. */ |
a346af3e | 818 | static CPUState *gdb_next_attached_cpu(CPUState *cpu) |
e40e5204 LM |
819 | { |
820 | cpu = CPU_NEXT(cpu); | |
821 | ||
822 | while (cpu) { | |
a346af3e | 823 | if (gdb_get_cpu_process(cpu)->attached) { |
e40e5204 LM |
824 | break; |
825 | } | |
826 | ||
827 | cpu = CPU_NEXT(cpu); | |
828 | } | |
829 | ||
830 | return cpu; | |
831 | } | |
832 | ||
833 | /* Return the first attached cpu */ | |
a346af3e | 834 | static CPUState *gdb_first_attached_cpu(void) |
e40e5204 LM |
835 | { |
836 | CPUState *cpu = first_cpu; | |
a346af3e | 837 | GDBProcess *process = gdb_get_cpu_process(cpu); |
e40e5204 LM |
838 | |
839 | if (!process->attached) { | |
a346af3e | 840 | return gdb_next_attached_cpu(cpu); |
e40e5204 LM |
841 | } |
842 | ||
843 | return cpu; | |
844 | } | |
845 | ||
a346af3e | 846 | static CPUState *gdb_get_cpu(uint32_t pid, uint32_t tid) |
ab65eed3 LM |
847 | { |
848 | GDBProcess *process; | |
849 | CPUState *cpu; | |
850 | ||
851 | if (!pid && !tid) { | |
852 | /* 0 means any process/thread, we take the first attached one */ | |
a346af3e | 853 | return gdb_first_attached_cpu(); |
ab65eed3 LM |
854 | } else if (pid && !tid) { |
855 | /* any thread in a specific process */ | |
a346af3e | 856 | process = gdb_get_process(pid); |
ab65eed3 LM |
857 | |
858 | if (process == NULL) { | |
859 | return NULL; | |
860 | } | |
861 | ||
862 | if (!process->attached) { | |
863 | return NULL; | |
864 | } | |
865 | ||
a346af3e | 866 | return get_first_cpu_in_process(process); |
ab65eed3 LM |
867 | } else { |
868 | /* a specific thread */ | |
869 | cpu = find_cpu(tid); | |
870 | ||
871 | if (cpu == NULL) { | |
872 | return NULL; | |
873 | } | |
874 | ||
a346af3e | 875 | process = gdb_get_cpu_process(cpu); |
ab65eed3 LM |
876 | |
877 | if (pid && process->pid != pid) { | |
878 | return NULL; | |
879 | } | |
880 | ||
881 | if (!process->attached) { | |
882 | return NULL; | |
883 | } | |
884 | ||
885 | return cpu; | |
886 | } | |
887 | } | |
888 | ||
a346af3e AB |
889 | static const char *get_feature_xml(const char *p, const char **newp, |
890 | GDBProcess *process) | |
56aebc89 | 891 | { |
56aebc89 PB |
892 | size_t len; |
893 | int i; | |
894 | const char *name; | |
a346af3e | 895 | CPUState *cpu = get_first_cpu_in_process(process); |
c145eeae | 896 | CPUClass *cc = CPU_GET_CLASS(cpu); |
56aebc89 PB |
897 | |
898 | len = 0; | |
899 | while (p[len] && p[len] != ':') | |
900 | len++; | |
901 | *newp = p + len; | |
902 | ||
903 | name = NULL; | |
904 | if (strncmp(p, "target.xml", len) == 0) { | |
c145eeae LM |
905 | char *buf = process->target_xml; |
906 | const size_t buf_sz = sizeof(process->target_xml); | |
907 | ||
56aebc89 | 908 | /* Generate the XML description for this CPU. */ |
c145eeae | 909 | if (!buf[0]) { |
56aebc89 PB |
910 | GDBRegisterState *r; |
911 | ||
c145eeae | 912 | pstrcat(buf, buf_sz, |
b3820e6c DH |
913 | "<?xml version=\"1.0\"?>" |
914 | "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" | |
915 | "<target>"); | |
916 | if (cc->gdb_arch_name) { | |
917 | gchar *arch = cc->gdb_arch_name(cpu); | |
c145eeae LM |
918 | pstrcat(buf, buf_sz, "<architecture>"); |
919 | pstrcat(buf, buf_sz, arch); | |
920 | pstrcat(buf, buf_sz, "</architecture>"); | |
b3820e6c DH |
921 | g_free(arch); |
922 | } | |
c145eeae LM |
923 | pstrcat(buf, buf_sz, "<xi:include href=\""); |
924 | pstrcat(buf, buf_sz, cc->gdb_core_xml_file); | |
925 | pstrcat(buf, buf_sz, "\"/>"); | |
eac8b355 | 926 | for (r = cpu->gdb_regs; r; r = r->next) { |
c145eeae LM |
927 | pstrcat(buf, buf_sz, "<xi:include href=\""); |
928 | pstrcat(buf, buf_sz, r->xml); | |
929 | pstrcat(buf, buf_sz, "\"/>"); | |
56aebc89 | 930 | } |
c145eeae | 931 | pstrcat(buf, buf_sz, "</target>"); |
56aebc89 | 932 | } |
c145eeae | 933 | return buf; |
56aebc89 | 934 | } |
200bf5b7 | 935 | if (cc->gdb_get_dynamic_xml) { |
200bf5b7 AB |
936 | char *xmlname = g_strndup(p, len); |
937 | const char *xml = cc->gdb_get_dynamic_xml(cpu, xmlname); | |
938 | ||
939 | g_free(xmlname); | |
940 | if (xml) { | |
941 | return xml; | |
942 | } | |
943 | } | |
56aebc89 PB |
944 | for (i = 0; ; i++) { |
945 | name = xml_builtin[i][0]; | |
946 | if (!name || (strncmp(name, p, len) == 0 && strlen(name) == len)) | |
947 | break; | |
948 | } | |
949 | return name ? xml_builtin[i][1] : NULL; | |
950 | } | |
f1ccf904 | 951 | |
a010bdbe | 952 | static int gdb_read_register(CPUState *cpu, GByteArray *buf, int reg) |
56aebc89 | 953 | { |
a0e372f0 | 954 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 955 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 956 | GDBRegisterState *r; |
f1ccf904 | 957 | |
a0e372f0 | 958 | if (reg < cc->gdb_num_core_regs) { |
a010bdbe | 959 | return cc->gdb_read_register(cpu, buf, reg); |
a0e372f0 | 960 | } |
f1ccf904 | 961 | |
eac8b355 | 962 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 | 963 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
a010bdbe | 964 | return r->get_reg(env, buf, reg - r->base_reg); |
56aebc89 PB |
965 | } |
966 | } | |
967 | return 0; | |
f1ccf904 TS |
968 | } |
969 | ||
385b9f0e | 970 | static int gdb_write_register(CPUState *cpu, uint8_t *mem_buf, int reg) |
f1ccf904 | 971 | { |
a0e372f0 | 972 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 973 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 974 | GDBRegisterState *r; |
f1ccf904 | 975 | |
a0e372f0 | 976 | if (reg < cc->gdb_num_core_regs) { |
5b50e790 | 977 | return cc->gdb_write_register(cpu, mem_buf, reg); |
a0e372f0 | 978 | } |
56aebc89 | 979 | |
eac8b355 | 980 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 PB |
981 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
982 | return r->set_reg(env, mem_buf, reg - r->base_reg); | |
983 | } | |
984 | } | |
6da41eaf FB |
985 | return 0; |
986 | } | |
987 | ||
56aebc89 PB |
988 | /* Register a supplemental set of CPU registers. If g_pos is nonzero it |
989 | specifies the first register number and these registers are included in | |
990 | a standard "g" packet. Direction is relative to gdb, i.e. get_reg is | |
991 | gdb reading a CPU register, and set_reg is gdb modifying a CPU register. | |
992 | */ | |
993 | ||
22169d41 | 994 | void gdb_register_coprocessor(CPUState *cpu, |
a010bdbe | 995 | gdb_get_reg_cb get_reg, gdb_set_reg_cb set_reg, |
22169d41 | 996 | int num_regs, const char *xml, int g_pos) |
6da41eaf | 997 | { |
56aebc89 PB |
998 | GDBRegisterState *s; |
999 | GDBRegisterState **p; | |
56aebc89 | 1000 | |
eac8b355 | 1001 | p = &cpu->gdb_regs; |
56aebc89 PB |
1002 | while (*p) { |
1003 | /* Check for duplicates. */ | |
1004 | if (strcmp((*p)->xml, xml) == 0) | |
1005 | return; | |
1006 | p = &(*p)->next; | |
1007 | } | |
9643c25f SW |
1008 | |
1009 | s = g_new0(GDBRegisterState, 1); | |
a0e372f0 | 1010 | s->base_reg = cpu->gdb_num_regs; |
9643c25f SW |
1011 | s->num_regs = num_regs; |
1012 | s->get_reg = get_reg; | |
1013 | s->set_reg = set_reg; | |
1014 | s->xml = xml; | |
1015 | ||
56aebc89 | 1016 | /* Add to end of list. */ |
a0e372f0 | 1017 | cpu->gdb_num_regs += num_regs; |
56aebc89 PB |
1018 | *p = s; |
1019 | if (g_pos) { | |
1020 | if (g_pos != s->base_reg) { | |
7ae6c571 ZY |
1021 | error_report("Error: Bad gdb register numbering for '%s', " |
1022 | "expected %d got %d", xml, g_pos, s->base_reg); | |
35143f01 AF |
1023 | } else { |
1024 | cpu->gdb_num_g_regs = cpu->gdb_num_regs; | |
56aebc89 PB |
1025 | } |
1026 | } | |
6da41eaf FB |
1027 | } |
1028 | ||
a1d1bb31 | 1029 | #ifndef CONFIG_USER_ONLY |
2472b6c0 PM |
1030 | /* Translate GDB watchpoint type to a flags value for cpu_watchpoint_* */ |
1031 | static inline int xlat_gdb_type(CPUState *cpu, int gdbtype) | |
1032 | { | |
1033 | static const int xlat[] = { | |
1034 | [GDB_WATCHPOINT_WRITE] = BP_GDB | BP_MEM_WRITE, | |
1035 | [GDB_WATCHPOINT_READ] = BP_GDB | BP_MEM_READ, | |
1036 | [GDB_WATCHPOINT_ACCESS] = BP_GDB | BP_MEM_ACCESS, | |
1037 | }; | |
1038 | ||
1039 | CPUClass *cc = CPU_GET_CLASS(cpu); | |
1040 | int cputype = xlat[gdbtype]; | |
1041 | ||
1042 | if (cc->gdb_stop_before_watchpoint) { | |
1043 | cputype |= BP_STOP_BEFORE_ACCESS; | |
1044 | } | |
1045 | return cputype; | |
1046 | } | |
a1d1bb31 AL |
1047 | #endif |
1048 | ||
77f6ce50 | 1049 | static int gdb_breakpoint_insert(int type, target_ulong addr, target_ulong len) |
a1d1bb31 | 1050 | { |
182735ef | 1051 | CPUState *cpu; |
880a7578 AL |
1052 | int err = 0; |
1053 | ||
62278814 | 1054 | if (kvm_enabled()) { |
8d98c445 | 1055 | return kvm_insert_breakpoint(gdbserver_state.c_cpu, addr, len, type); |
62278814 | 1056 | } |
e22a25c9 | 1057 | |
a1d1bb31 AL |
1058 | switch (type) { |
1059 | case GDB_BREAKPOINT_SW: | |
1060 | case GDB_BREAKPOINT_HW: | |
bdc44640 | 1061 | CPU_FOREACH(cpu) { |
b3310ab3 AF |
1062 | err = cpu_breakpoint_insert(cpu, addr, BP_GDB, NULL); |
1063 | if (err) { | |
880a7578 | 1064 | break; |
b3310ab3 | 1065 | } |
880a7578 AL |
1066 | } |
1067 | return err; | |
a1d1bb31 AL |
1068 | #ifndef CONFIG_USER_ONLY |
1069 | case GDB_WATCHPOINT_WRITE: | |
1070 | case GDB_WATCHPOINT_READ: | |
1071 | case GDB_WATCHPOINT_ACCESS: | |
bdc44640 | 1072 | CPU_FOREACH(cpu) { |
2472b6c0 PM |
1073 | err = cpu_watchpoint_insert(cpu, addr, len, |
1074 | xlat_gdb_type(cpu, type), NULL); | |
1075 | if (err) { | |
880a7578 | 1076 | break; |
2472b6c0 | 1077 | } |
880a7578 AL |
1078 | } |
1079 | return err; | |
a1d1bb31 AL |
1080 | #endif |
1081 | default: | |
1082 | return -ENOSYS; | |
1083 | } | |
1084 | } | |
1085 | ||
77f6ce50 | 1086 | static int gdb_breakpoint_remove(int type, target_ulong addr, target_ulong len) |
a1d1bb31 | 1087 | { |
182735ef | 1088 | CPUState *cpu; |
880a7578 AL |
1089 | int err = 0; |
1090 | ||
62278814 | 1091 | if (kvm_enabled()) { |
8d98c445 | 1092 | return kvm_remove_breakpoint(gdbserver_state.c_cpu, addr, len, type); |
62278814 | 1093 | } |
e22a25c9 | 1094 | |
a1d1bb31 AL |
1095 | switch (type) { |
1096 | case GDB_BREAKPOINT_SW: | |
1097 | case GDB_BREAKPOINT_HW: | |
bdc44640 | 1098 | CPU_FOREACH(cpu) { |
b3310ab3 AF |
1099 | err = cpu_breakpoint_remove(cpu, addr, BP_GDB); |
1100 | if (err) { | |
880a7578 | 1101 | break; |
b3310ab3 | 1102 | } |
880a7578 AL |
1103 | } |
1104 | return err; | |
a1d1bb31 AL |
1105 | #ifndef CONFIG_USER_ONLY |
1106 | case GDB_WATCHPOINT_WRITE: | |
1107 | case GDB_WATCHPOINT_READ: | |
1108 | case GDB_WATCHPOINT_ACCESS: | |
bdc44640 | 1109 | CPU_FOREACH(cpu) { |
2472b6c0 PM |
1110 | err = cpu_watchpoint_remove(cpu, addr, len, |
1111 | xlat_gdb_type(cpu, type)); | |
880a7578 AL |
1112 | if (err) |
1113 | break; | |
1114 | } | |
1115 | return err; | |
a1d1bb31 AL |
1116 | #endif |
1117 | default: | |
1118 | return -ENOSYS; | |
1119 | } | |
1120 | } | |
1121 | ||
546f3c67 LM |
1122 | static inline void gdb_cpu_breakpoint_remove_all(CPUState *cpu) |
1123 | { | |
1124 | cpu_breakpoint_remove_all(cpu, BP_GDB); | |
1125 | #ifndef CONFIG_USER_ONLY | |
1126 | cpu_watchpoint_remove_all(cpu, BP_GDB); | |
1127 | #endif | |
1128 | } | |
1129 | ||
a346af3e | 1130 | static void gdb_process_breakpoint_remove_all(GDBProcess *p) |
546f3c67 | 1131 | { |
a346af3e | 1132 | CPUState *cpu = get_first_cpu_in_process(p); |
546f3c67 LM |
1133 | |
1134 | while (cpu) { | |
1135 | gdb_cpu_breakpoint_remove_all(cpu); | |
a346af3e | 1136 | cpu = gdb_next_cpu_in_process(cpu); |
546f3c67 LM |
1137 | } |
1138 | } | |
1139 | ||
880a7578 | 1140 | static void gdb_breakpoint_remove_all(void) |
a1d1bb31 | 1141 | { |
182735ef | 1142 | CPUState *cpu; |
880a7578 | 1143 | |
e22a25c9 | 1144 | if (kvm_enabled()) { |
8d98c445 | 1145 | kvm_remove_all_breakpoints(gdbserver_state.c_cpu); |
e22a25c9 AL |
1146 | return; |
1147 | } | |
1148 | ||
bdc44640 | 1149 | CPU_FOREACH(cpu) { |
546f3c67 | 1150 | gdb_cpu_breakpoint_remove_all(cpu); |
880a7578 | 1151 | } |
a1d1bb31 AL |
1152 | } |
1153 | ||
a346af3e | 1154 | static void gdb_set_cpu_pc(target_ulong pc) |
fab9d284 | 1155 | { |
a346af3e | 1156 | CPUState *cpu = gdbserver_state.c_cpu; |
f45748f1 AF |
1157 | |
1158 | cpu_synchronize_state(cpu); | |
4a2b24ed | 1159 | cpu_set_pc(cpu, pc); |
fab9d284 AJ |
1160 | } |
1161 | ||
308f9e88 | 1162 | static void gdb_append_thread_id(CPUState *cpu, GString *buf) |
1a227336 | 1163 | { |
a346af3e | 1164 | if (gdbserver_state.multiprocess) { |
308f9e88 AB |
1165 | g_string_append_printf(buf, "p%02x.%02x", |
1166 | gdb_get_cpu_pid(cpu), cpu_gdb_index(cpu)); | |
1a227336 | 1167 | } else { |
308f9e88 | 1168 | g_string_append_printf(buf, "%02x", cpu_gdb_index(cpu)); |
1a227336 | 1169 | } |
1a227336 LM |
1170 | } |
1171 | ||
7d8c87da LM |
1172 | typedef enum GDBThreadIdKind { |
1173 | GDB_ONE_THREAD = 0, | |
1174 | GDB_ALL_THREADS, /* One process, all threads */ | |
1175 | GDB_ALL_PROCESSES, | |
1176 | GDB_READ_THREAD_ERR | |
1177 | } GDBThreadIdKind; | |
1178 | ||
1179 | static GDBThreadIdKind read_thread_id(const char *buf, const char **end_buf, | |
1180 | uint32_t *pid, uint32_t *tid) | |
1181 | { | |
1182 | unsigned long p, t; | |
1183 | int ret; | |
1184 | ||
1185 | if (*buf == 'p') { | |
1186 | buf++; | |
1187 | ret = qemu_strtoul(buf, &buf, 16, &p); | |
1188 | ||
1189 | if (ret) { | |
1190 | return GDB_READ_THREAD_ERR; | |
1191 | } | |
1192 | ||
1193 | /* Skip '.' */ | |
1194 | buf++; | |
1195 | } else { | |
1196 | p = 1; | |
1197 | } | |
1198 | ||
1199 | ret = qemu_strtoul(buf, &buf, 16, &t); | |
1200 | ||
1201 | if (ret) { | |
1202 | return GDB_READ_THREAD_ERR; | |
1203 | } | |
1204 | ||
1205 | *end_buf = buf; | |
1206 | ||
1207 | if (p == -1) { | |
1208 | return GDB_ALL_PROCESSES; | |
1209 | } | |
1210 | ||
1211 | if (pid) { | |
1212 | *pid = p; | |
1213 | } | |
1214 | ||
1215 | if (t == -1) { | |
1216 | return GDB_ALL_THREADS; | |
1217 | } | |
1218 | ||
1219 | if (tid) { | |
1220 | *tid = t; | |
1221 | } | |
1222 | ||
1223 | return GDB_ONE_THREAD; | |
1224 | } | |
1225 | ||
544177ad CI |
1226 | /** |
1227 | * gdb_handle_vcont - Parses and handles a vCont packet. | |
1228 | * returns -ENOTSUP if a command is unsupported, -EINVAL or -ERANGE if there is | |
1229 | * a format error, 0 on success. | |
1230 | */ | |
a346af3e | 1231 | static int gdb_handle_vcont(const char *p) |
544177ad | 1232 | { |
e40e5204 | 1233 | int res, signal = 0; |
544177ad CI |
1234 | char cur_action; |
1235 | char *newstates; | |
1236 | unsigned long tmp; | |
e40e5204 LM |
1237 | uint32_t pid, tid; |
1238 | GDBProcess *process; | |
544177ad | 1239 | CPUState *cpu; |
c99ef792 | 1240 | GDBThreadIdKind kind; |
544177ad CI |
1241 | #ifdef CONFIG_USER_ONLY |
1242 | int max_cpus = 1; /* global variable max_cpus exists only in system mode */ | |
1243 | ||
1244 | CPU_FOREACH(cpu) { | |
1245 | max_cpus = max_cpus <= cpu->cpu_index ? cpu->cpu_index + 1 : max_cpus; | |
1246 | } | |
5cc8767d LX |
1247 | #else |
1248 | MachineState *ms = MACHINE(qdev_get_machine()); | |
1249 | unsigned int max_cpus = ms->smp.max_cpus; | |
544177ad CI |
1250 | #endif |
1251 | /* uninitialised CPUs stay 0 */ | |
1252 | newstates = g_new0(char, max_cpus); | |
1253 | ||
1254 | /* mark valid CPUs with 1 */ | |
1255 | CPU_FOREACH(cpu) { | |
1256 | newstates[cpu->cpu_index] = 1; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * res keeps track of what error we are returning, with -ENOTSUP meaning | |
1261 | * that the command is unknown or unsupported, thus returning an empty | |
1262 | * packet, while -EINVAL and -ERANGE cause an E22 packet, due to invalid, | |
1263 | * or incorrect parameters passed. | |
1264 | */ | |
1265 | res = 0; | |
1266 | while (*p) { | |
1267 | if (*p++ != ';') { | |
1268 | res = -ENOTSUP; | |
1269 | goto out; | |
1270 | } | |
1271 | ||
1272 | cur_action = *p++; | |
1273 | if (cur_action == 'C' || cur_action == 'S') { | |
95a5befc | 1274 | cur_action = qemu_tolower(cur_action); |
3ddd9036 | 1275 | res = qemu_strtoul(p, &p, 16, &tmp); |
544177ad CI |
1276 | if (res) { |
1277 | goto out; | |
1278 | } | |
1279 | signal = gdb_signal_to_target(tmp); | |
1280 | } else if (cur_action != 'c' && cur_action != 's') { | |
1281 | /* unknown/invalid/unsupported command */ | |
1282 | res = -ENOTSUP; | |
1283 | goto out; | |
1284 | } | |
e40e5204 | 1285 | |
c99ef792 LM |
1286 | if (*p == '\0' || *p == ';') { |
1287 | /* | |
1288 | * No thread specifier, action is on "all threads". The | |
1289 | * specification is unclear regarding the process to act on. We | |
1290 | * choose all processes. | |
1291 | */ | |
1292 | kind = GDB_ALL_PROCESSES; | |
1293 | } else if (*p++ == ':') { | |
1294 | kind = read_thread_id(p, &p, &pid, &tid); | |
1295 | } else { | |
e40e5204 LM |
1296 | res = -ENOTSUP; |
1297 | goto out; | |
1298 | } | |
1299 | ||
c99ef792 | 1300 | switch (kind) { |
e40e5204 LM |
1301 | case GDB_READ_THREAD_ERR: |
1302 | res = -EINVAL; | |
1303 | goto out; | |
1304 | ||
1305 | case GDB_ALL_PROCESSES: | |
a346af3e | 1306 | cpu = gdb_first_attached_cpu(); |
e40e5204 LM |
1307 | while (cpu) { |
1308 | if (newstates[cpu->cpu_index] == 1) { | |
1309 | newstates[cpu->cpu_index] = cur_action; | |
544177ad | 1310 | } |
e40e5204 | 1311 | |
a346af3e | 1312 | cpu = gdb_next_attached_cpu(cpu); |
544177ad | 1313 | } |
e40e5204 LM |
1314 | break; |
1315 | ||
1316 | case GDB_ALL_THREADS: | |
a346af3e | 1317 | process = gdb_get_process(pid); |
e40e5204 LM |
1318 | |
1319 | if (!process->attached) { | |
1320 | res = -EINVAL; | |
544177ad CI |
1321 | goto out; |
1322 | } | |
5a6a1ad1 | 1323 | |
a346af3e | 1324 | cpu = get_first_cpu_in_process(process); |
e40e5204 LM |
1325 | while (cpu) { |
1326 | if (newstates[cpu->cpu_index] == 1) { | |
1327 | newstates[cpu->cpu_index] = cur_action; | |
1328 | } | |
1329 | ||
a346af3e | 1330 | cpu = gdb_next_cpu_in_process(cpu); |
e40e5204 LM |
1331 | } |
1332 | break; | |
1333 | ||
1334 | case GDB_ONE_THREAD: | |
a346af3e | 1335 | cpu = gdb_get_cpu(pid, tid); |
544177ad | 1336 | |
544177ad | 1337 | /* invalid CPU/thread specified */ |
5a6a1ad1 | 1338 | if (!cpu) { |
544177ad CI |
1339 | res = -EINVAL; |
1340 | goto out; | |
1341 | } | |
5a6a1ad1 | 1342 | |
544177ad CI |
1343 | /* only use if no previous match occourred */ |
1344 | if (newstates[cpu->cpu_index] == 1) { | |
1345 | newstates[cpu->cpu_index] = cur_action; | |
1346 | } | |
e40e5204 | 1347 | break; |
544177ad CI |
1348 | } |
1349 | } | |
a346af3e AB |
1350 | gdbserver_state.signal = signal; |
1351 | gdb_continue_partial(newstates); | |
544177ad CI |
1352 | |
1353 | out: | |
1354 | g_free(newstates); | |
1355 | ||
1356 | return res; | |
1357 | } | |
1358 | ||
d14055dc JD |
1359 | typedef union GdbCmdVariant { |
1360 | const char *data; | |
1361 | uint8_t opcode; | |
1362 | unsigned long val_ul; | |
1363 | unsigned long long val_ull; | |
1364 | struct { | |
1365 | GDBThreadIdKind kind; | |
1366 | uint32_t pid; | |
1367 | uint32_t tid; | |
1368 | } thread_id; | |
1369 | } GdbCmdVariant; | |
1370 | ||
26a16181 AB |
1371 | #define get_param(p, i) (&g_array_index(p, GdbCmdVariant, i)) |
1372 | ||
d14055dc JD |
1373 | static const char *cmd_next_param(const char *param, const char delimiter) |
1374 | { | |
1375 | static const char all_delimiters[] = ",;:="; | |
1376 | char curr_delimiters[2] = {0}; | |
1377 | const char *delimiters; | |
1378 | ||
1379 | if (delimiter == '?') { | |
1380 | delimiters = all_delimiters; | |
1381 | } else if (delimiter == '0') { | |
1382 | return strchr(param, '\0'); | |
1383 | } else if (delimiter == '.' && *param) { | |
1384 | return param + 1; | |
1385 | } else { | |
1386 | curr_delimiters[0] = delimiter; | |
1387 | delimiters = curr_delimiters; | |
1388 | } | |
1389 | ||
1390 | param += strcspn(param, delimiters); | |
1391 | if (*param) { | |
1392 | param++; | |
1393 | } | |
1394 | return param; | |
1395 | } | |
1396 | ||
1397 | static int cmd_parse_params(const char *data, const char *schema, | |
26a16181 | 1398 | GArray *params) |
d14055dc | 1399 | { |
d14055dc JD |
1400 | const char *curr_schema, *curr_data; |
1401 | ||
26a16181 AB |
1402 | g_assert(schema); |
1403 | g_assert(params->len == 0); | |
d14055dc JD |
1404 | |
1405 | curr_schema = schema; | |
d14055dc JD |
1406 | curr_data = data; |
1407 | while (curr_schema[0] && curr_schema[1] && *curr_data) { | |
26a16181 AB |
1408 | GdbCmdVariant this_param; |
1409 | ||
d14055dc JD |
1410 | switch (curr_schema[0]) { |
1411 | case 'l': | |
1412 | if (qemu_strtoul(curr_data, &curr_data, 16, | |
26a16181 | 1413 | &this_param.val_ul)) { |
d14055dc JD |
1414 | return -EINVAL; |
1415 | } | |
d14055dc | 1416 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 1417 | g_array_append_val(params, this_param); |
d14055dc JD |
1418 | break; |
1419 | case 'L': | |
1420 | if (qemu_strtou64(curr_data, &curr_data, 16, | |
26a16181 | 1421 | (uint64_t *)&this_param.val_ull)) { |
d14055dc JD |
1422 | return -EINVAL; |
1423 | } | |
d14055dc | 1424 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 1425 | g_array_append_val(params, this_param); |
d14055dc JD |
1426 | break; |
1427 | case 's': | |
26a16181 | 1428 | this_param.data = curr_data; |
d14055dc | 1429 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 1430 | g_array_append_val(params, this_param); |
d14055dc JD |
1431 | break; |
1432 | case 'o': | |
26a16181 | 1433 | this_param.opcode = *(uint8_t *)curr_data; |
d14055dc | 1434 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 1435 | g_array_append_val(params, this_param); |
d14055dc JD |
1436 | break; |
1437 | case 't': | |
26a16181 | 1438 | this_param.thread_id.kind = |
d14055dc | 1439 | read_thread_id(curr_data, &curr_data, |
26a16181 AB |
1440 | &this_param.thread_id.pid, |
1441 | &this_param.thread_id.tid); | |
d14055dc | 1442 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 1443 | g_array_append_val(params, this_param); |
d14055dc JD |
1444 | break; |
1445 | case '?': | |
1446 | curr_data = cmd_next_param(curr_data, curr_schema[1]); | |
1447 | break; | |
1448 | default: | |
1449 | return -EINVAL; | |
1450 | } | |
1451 | curr_schema += 2; | |
1452 | } | |
1453 | ||
d14055dc JD |
1454 | return 0; |
1455 | } | |
1456 | ||
26a16181 | 1457 | typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx); |
d14055dc JD |
1458 | |
1459 | /* | |
1460 | * cmd_startswith -> cmd is compared using startswith | |
1461 | * | |
1462 | * | |
1463 | * schema definitions: | |
1464 | * Each schema parameter entry consists of 2 chars, | |
1465 | * the first char represents the parameter type handling | |
1466 | * the second char represents the delimiter for the next parameter | |
1467 | * | |
1468 | * Currently supported schema types: | |
1469 | * 'l' -> unsigned long (stored in .val_ul) | |
1470 | * 'L' -> unsigned long long (stored in .val_ull) | |
1471 | * 's' -> string (stored in .data) | |
1472 | * 'o' -> single char (stored in .opcode) | |
1473 | * 't' -> thread id (stored in .thread_id) | |
1474 | * '?' -> skip according to delimiter | |
1475 | * | |
1476 | * Currently supported delimiters: | |
1477 | * '?' -> Stop at any delimiter (",;:=\0") | |
1478 | * '0' -> Stop at "\0" | |
1479 | * '.' -> Skip 1 char unless reached "\0" | |
1480 | * Any other value is treated as the delimiter value itself | |
1481 | */ | |
1482 | typedef struct GdbCmdParseEntry { | |
1483 | GdbCmdHandler handler; | |
1484 | const char *cmd; | |
1485 | bool cmd_startswith; | |
1486 | const char *schema; | |
1487 | } GdbCmdParseEntry; | |
1488 | ||
1489 | static inline int startswith(const char *string, const char *pattern) | |
1490 | { | |
1491 | return !strncmp(string, pattern, strlen(pattern)); | |
1492 | } | |
1493 | ||
a346af3e | 1494 | static int process_string_cmd(void *user_ctx, const char *data, |
d14055dc JD |
1495 | const GdbCmdParseEntry *cmds, int num_cmds) |
1496 | { | |
26a16181 AB |
1497 | int i; |
1498 | g_autoptr(GArray) params = g_array_new(false, true, sizeof(GdbCmdVariant)); | |
d14055dc JD |
1499 | |
1500 | if (!cmds) { | |
1501 | return -1; | |
1502 | } | |
1503 | ||
1504 | for (i = 0; i < num_cmds; i++) { | |
1505 | const GdbCmdParseEntry *cmd = &cmds[i]; | |
1506 | g_assert(cmd->handler && cmd->cmd); | |
1507 | ||
1508 | if ((cmd->cmd_startswith && !startswith(data, cmd->cmd)) || | |
1509 | (!cmd->cmd_startswith && strcmp(cmd->cmd, data))) { | |
1510 | continue; | |
1511 | } | |
1512 | ||
1513 | if (cmd->schema) { | |
26a16181 AB |
1514 | if (cmd_parse_params(&data[strlen(cmd->cmd)], |
1515 | cmd->schema, params)) { | |
1516 | return -1; | |
d14055dc | 1517 | } |
d14055dc JD |
1518 | } |
1519 | ||
26a16181 | 1520 | cmd->handler(params, user_ctx); |
d14055dc JD |
1521 | return 0; |
1522 | } | |
1523 | ||
1524 | return -1; | |
1525 | } | |
1526 | ||
a346af3e | 1527 | static void run_cmd_parser(const char *data, const GdbCmdParseEntry *cmd) |
3e2c1261 JD |
1528 | { |
1529 | if (!data) { | |
1530 | return; | |
1531 | } | |
1532 | ||
308f9e88 | 1533 | g_string_set_size(gdbserver_state.str_buf, 0); |
4a25f1b9 | 1534 | g_byte_array_set_size(gdbserver_state.mem_buf, 0); |
308f9e88 | 1535 | |
3e2c1261 JD |
1536 | /* In case there was an error during the command parsing we must |
1537 | * send a NULL packet to indicate the command is not supported */ | |
a346af3e AB |
1538 | if (process_string_cmd(NULL, data, cmd, 1)) { |
1539 | put_packet(""); | |
3e2c1261 JD |
1540 | } |
1541 | } | |
1542 | ||
26a16181 | 1543 | static void handle_detach(GArray *params, void *user_ctx) |
3e2c1261 JD |
1544 | { |
1545 | GDBProcess *process; | |
3e2c1261 JD |
1546 | uint32_t pid = 1; |
1547 | ||
a346af3e | 1548 | if (gdbserver_state.multiprocess) { |
26a16181 | 1549 | if (!params->len) { |
a346af3e | 1550 | put_packet("E22"); |
3e2c1261 JD |
1551 | return; |
1552 | } | |
1553 | ||
26a16181 | 1554 | pid = get_param(params, 0)->val_ul; |
3e2c1261 JD |
1555 | } |
1556 | ||
a346af3e AB |
1557 | process = gdb_get_process(pid); |
1558 | gdb_process_breakpoint_remove_all(process); | |
3e2c1261 JD |
1559 | process->attached = false; |
1560 | ||
a346af3e AB |
1561 | if (pid == gdb_get_cpu_pid(gdbserver_state.c_cpu)) { |
1562 | gdbserver_state.c_cpu = gdb_first_attached_cpu(); | |
3e2c1261 JD |
1563 | } |
1564 | ||
a346af3e AB |
1565 | if (pid == gdb_get_cpu_pid(gdbserver_state.g_cpu)) { |
1566 | gdbserver_state.g_cpu = gdb_first_attached_cpu(); | |
3e2c1261 JD |
1567 | } |
1568 | ||
a346af3e | 1569 | if (!gdbserver_state.c_cpu) { |
3e2c1261 JD |
1570 | /* No more process attached */ |
1571 | gdb_syscall_mode = GDB_SYS_DISABLED; | |
a346af3e | 1572 | gdb_continue(); |
3e2c1261 | 1573 | } |
a346af3e | 1574 | put_packet("OK"); |
3e2c1261 JD |
1575 | } |
1576 | ||
26a16181 | 1577 | static void handle_thread_alive(GArray *params, void *user_ctx) |
44ffded0 JD |
1578 | { |
1579 | CPUState *cpu; | |
1580 | ||
26a16181 | 1581 | if (!params->len) { |
a346af3e | 1582 | put_packet("E22"); |
44ffded0 JD |
1583 | return; |
1584 | } | |
1585 | ||
26a16181 | 1586 | if (get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) { |
a346af3e | 1587 | put_packet("E22"); |
44ffded0 JD |
1588 | return; |
1589 | } | |
1590 | ||
26a16181 AB |
1591 | cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid, |
1592 | get_param(params, 0)->thread_id.tid); | |
44ffded0 | 1593 | if (!cpu) { |
a346af3e | 1594 | put_packet("E22"); |
44ffded0 JD |
1595 | return; |
1596 | } | |
1597 | ||
a346af3e | 1598 | put_packet("OK"); |
44ffded0 JD |
1599 | } |
1600 | ||
26a16181 | 1601 | static void handle_continue(GArray *params, void *user_ctx) |
4d6e3fe2 | 1602 | { |
26a16181 AB |
1603 | if (params->len) { |
1604 | gdb_set_cpu_pc(get_param(params, 0)->val_ull); | |
4d6e3fe2 JD |
1605 | } |
1606 | ||
a346af3e AB |
1607 | gdbserver_state.signal = 0; |
1608 | gdb_continue(); | |
4d6e3fe2 JD |
1609 | } |
1610 | ||
26a16181 | 1611 | static void handle_cont_with_sig(GArray *params, void *user_ctx) |
ccc47d5d JD |
1612 | { |
1613 | unsigned long signal = 0; | |
1614 | ||
1615 | /* | |
1616 | * Note: C sig;[addr] is currently unsupported and we simply | |
1617 | * omit the addr parameter | |
1618 | */ | |
26a16181 AB |
1619 | if (params->len) { |
1620 | signal = get_param(params, 0)->val_ul; | |
ccc47d5d JD |
1621 | } |
1622 | ||
a346af3e AB |
1623 | gdbserver_state.signal = gdb_signal_to_target(signal); |
1624 | if (gdbserver_state.signal == -1) { | |
1625 | gdbserver_state.signal = 0; | |
ccc47d5d | 1626 | } |
a346af3e | 1627 | gdb_continue(); |
ccc47d5d JD |
1628 | } |
1629 | ||
26a16181 | 1630 | static void handle_set_thread(GArray *params, void *user_ctx) |
3a9651d6 JD |
1631 | { |
1632 | CPUState *cpu; | |
1633 | ||
26a16181 | 1634 | if (params->len != 2) { |
a346af3e | 1635 | put_packet("E22"); |
3a9651d6 JD |
1636 | return; |
1637 | } | |
1638 | ||
26a16181 | 1639 | if (get_param(params, 1)->thread_id.kind == GDB_READ_THREAD_ERR) { |
a346af3e | 1640 | put_packet("E22"); |
3a9651d6 JD |
1641 | return; |
1642 | } | |
1643 | ||
26a16181 | 1644 | if (get_param(params, 1)->thread_id.kind != GDB_ONE_THREAD) { |
a346af3e | 1645 | put_packet("OK"); |
3a9651d6 JD |
1646 | return; |
1647 | } | |
1648 | ||
26a16181 AB |
1649 | cpu = gdb_get_cpu(get_param(params, 1)->thread_id.pid, |
1650 | get_param(params, 1)->thread_id.tid); | |
3a9651d6 | 1651 | if (!cpu) { |
a346af3e | 1652 | put_packet("E22"); |
3a9651d6 JD |
1653 | return; |
1654 | } | |
1655 | ||
1656 | /* | |
1657 | * Note: This command is deprecated and modern gdb's will be using the | |
1658 | * vCont command instead. | |
1659 | */ | |
26a16181 | 1660 | switch (get_param(params, 0)->opcode) { |
3a9651d6 | 1661 | case 'c': |
a346af3e AB |
1662 | gdbserver_state.c_cpu = cpu; |
1663 | put_packet("OK"); | |
3a9651d6 JD |
1664 | break; |
1665 | case 'g': | |
a346af3e AB |
1666 | gdbserver_state.g_cpu = cpu; |
1667 | put_packet("OK"); | |
3a9651d6 JD |
1668 | break; |
1669 | default: | |
a346af3e | 1670 | put_packet("E22"); |
3a9651d6 JD |
1671 | break; |
1672 | } | |
1673 | } | |
1674 | ||
26a16181 | 1675 | static void handle_insert_bp(GArray *params, void *user_ctx) |
77f6ce50 JD |
1676 | { |
1677 | int res; | |
1678 | ||
26a16181 | 1679 | if (params->len != 3) { |
a346af3e | 1680 | put_packet("E22"); |
77f6ce50 JD |
1681 | return; |
1682 | } | |
1683 | ||
26a16181 AB |
1684 | res = gdb_breakpoint_insert(get_param(params, 0)->val_ul, |
1685 | get_param(params, 1)->val_ull, | |
1686 | get_param(params, 2)->val_ull); | |
77f6ce50 | 1687 | if (res >= 0) { |
a346af3e | 1688 | put_packet("OK"); |
77f6ce50 JD |
1689 | return; |
1690 | } else if (res == -ENOSYS) { | |
a346af3e | 1691 | put_packet(""); |
77f6ce50 JD |
1692 | return; |
1693 | } | |
1694 | ||
a346af3e | 1695 | put_packet("E22"); |
77f6ce50 JD |
1696 | } |
1697 | ||
26a16181 | 1698 | static void handle_remove_bp(GArray *params, void *user_ctx) |
77f6ce50 JD |
1699 | { |
1700 | int res; | |
1701 | ||
26a16181 | 1702 | if (params->len != 3) { |
a346af3e | 1703 | put_packet("E22"); |
77f6ce50 JD |
1704 | return; |
1705 | } | |
1706 | ||
26a16181 AB |
1707 | res = gdb_breakpoint_remove(get_param(params, 0)->val_ul, |
1708 | get_param(params, 1)->val_ull, | |
1709 | get_param(params, 2)->val_ull); | |
77f6ce50 | 1710 | if (res >= 0) { |
a346af3e | 1711 | put_packet("OK"); |
77f6ce50 JD |
1712 | return; |
1713 | } else if (res == -ENOSYS) { | |
a346af3e | 1714 | put_packet(""); |
77f6ce50 JD |
1715 | return; |
1716 | } | |
1717 | ||
a346af3e | 1718 | put_packet("E22"); |
77f6ce50 JD |
1719 | } |
1720 | ||
94b2a62b AB |
1721 | /* |
1722 | * handle_set/get_reg | |
1723 | * | |
1724 | * Older gdb are really dumb, and don't use 'G/g' if 'P/p' is available. | |
1725 | * This works, but can be very slow. Anything new enough to understand | |
1726 | * XML also knows how to use this properly. However to use this we | |
1727 | * need to define a local XML file as well as be talking to a | |
1728 | * reasonably modern gdb. Responding with an empty packet will cause | |
1729 | * the remote gdb to fallback to older methods. | |
1730 | */ | |
1731 | ||
26a16181 | 1732 | static void handle_set_reg(GArray *params, void *user_ctx) |
62b3320b JD |
1733 | { |
1734 | int reg_size; | |
1735 | ||
1736 | if (!gdb_has_xml) { | |
a346af3e | 1737 | put_packet(""); |
62b3320b JD |
1738 | return; |
1739 | } | |
1740 | ||
26a16181 | 1741 | if (params->len != 2) { |
a346af3e | 1742 | put_packet("E22"); |
62b3320b JD |
1743 | return; |
1744 | } | |
1745 | ||
26a16181 AB |
1746 | reg_size = strlen(get_param(params, 1)->data) / 2; |
1747 | hextomem(gdbserver_state.mem_buf, get_param(params, 1)->data, reg_size); | |
4a25f1b9 | 1748 | gdb_write_register(gdbserver_state.g_cpu, gdbserver_state.mem_buf->data, |
26a16181 | 1749 | get_param(params, 0)->val_ull); |
a346af3e | 1750 | put_packet("OK"); |
62b3320b JD |
1751 | } |
1752 | ||
26a16181 | 1753 | static void handle_get_reg(GArray *params, void *user_ctx) |
5d0e57bd JD |
1754 | { |
1755 | int reg_size; | |
1756 | ||
5d0e57bd | 1757 | if (!gdb_has_xml) { |
a346af3e | 1758 | put_packet(""); |
5d0e57bd JD |
1759 | return; |
1760 | } | |
1761 | ||
26a16181 | 1762 | if (!params->len) { |
a346af3e | 1763 | put_packet("E14"); |
5d0e57bd JD |
1764 | return; |
1765 | } | |
1766 | ||
4a25f1b9 | 1767 | reg_size = gdb_read_register(gdbserver_state.g_cpu, |
a010bdbe | 1768 | gdbserver_state.mem_buf, |
26a16181 | 1769 | get_param(params, 0)->val_ull); |
5d0e57bd | 1770 | if (!reg_size) { |
a346af3e | 1771 | put_packet("E14"); |
5d0e57bd | 1772 | return; |
4a25f1b9 AB |
1773 | } else { |
1774 | g_byte_array_set_size(gdbserver_state.mem_buf, reg_size); | |
5d0e57bd JD |
1775 | } |
1776 | ||
4a25f1b9 | 1777 | memtohex(gdbserver_state.str_buf, gdbserver_state.mem_buf->data, reg_size); |
308f9e88 | 1778 | put_strbuf(); |
5d0e57bd JD |
1779 | } |
1780 | ||
26a16181 | 1781 | static void handle_write_mem(GArray *params, void *user_ctx) |
cc0ecc78 | 1782 | { |
26a16181 | 1783 | if (params->len != 3) { |
a346af3e | 1784 | put_packet("E22"); |
cc0ecc78 JD |
1785 | return; |
1786 | } | |
1787 | ||
1788 | /* hextomem() reads 2*len bytes */ | |
26a16181 AB |
1789 | if (get_param(params, 1)->val_ull > |
1790 | strlen(get_param(params, 2)->data) / 2) { | |
a346af3e | 1791 | put_packet("E22"); |
cc0ecc78 JD |
1792 | return; |
1793 | } | |
1794 | ||
26a16181 AB |
1795 | hextomem(gdbserver_state.mem_buf, get_param(params, 2)->data, |
1796 | get_param(params, 1)->val_ull); | |
1797 | if (target_memory_rw_debug(gdbserver_state.g_cpu, | |
1798 | get_param(params, 0)->val_ull, | |
4a25f1b9 AB |
1799 | gdbserver_state.mem_buf->data, |
1800 | gdbserver_state.mem_buf->len, true)) { | |
a346af3e | 1801 | put_packet("E14"); |
cc0ecc78 JD |
1802 | return; |
1803 | } | |
1804 | ||
a346af3e | 1805 | put_packet("OK"); |
cc0ecc78 JD |
1806 | } |
1807 | ||
26a16181 | 1808 | static void handle_read_mem(GArray *params, void *user_ctx) |
da92e236 | 1809 | { |
26a16181 | 1810 | if (params->len != 2) { |
a346af3e | 1811 | put_packet("E22"); |
da92e236 JD |
1812 | return; |
1813 | } | |
1814 | ||
1815 | /* memtohex() doubles the required space */ | |
26a16181 | 1816 | if (get_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) { |
a346af3e | 1817 | put_packet("E22"); |
da92e236 JD |
1818 | return; |
1819 | } | |
1820 | ||
26a16181 AB |
1821 | g_byte_array_set_size(gdbserver_state.mem_buf, |
1822 | get_param(params, 1)->val_ull); | |
4a25f1b9 | 1823 | |
26a16181 AB |
1824 | if (target_memory_rw_debug(gdbserver_state.g_cpu, |
1825 | get_param(params, 0)->val_ull, | |
4a25f1b9 AB |
1826 | gdbserver_state.mem_buf->data, |
1827 | gdbserver_state.mem_buf->len, false)) { | |
a346af3e | 1828 | put_packet("E14"); |
da92e236 JD |
1829 | return; |
1830 | } | |
1831 | ||
4a25f1b9 AB |
1832 | memtohex(gdbserver_state.str_buf, gdbserver_state.mem_buf->data, |
1833 | gdbserver_state.mem_buf->len); | |
308f9e88 | 1834 | put_strbuf(); |
da92e236 JD |
1835 | } |
1836 | ||
26a16181 | 1837 | static void handle_write_all_regs(GArray *params, void *user_ctx) |
287ca120 JD |
1838 | { |
1839 | target_ulong addr, len; | |
1840 | uint8_t *registers; | |
1841 | int reg_size; | |
1842 | ||
26a16181 | 1843 | if (!params->len) { |
287ca120 JD |
1844 | return; |
1845 | } | |
1846 | ||
a346af3e | 1847 | cpu_synchronize_state(gdbserver_state.g_cpu); |
26a16181 AB |
1848 | len = strlen(get_param(params, 0)->data) / 2; |
1849 | hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len); | |
4a25f1b9 | 1850 | registers = gdbserver_state.mem_buf->data; |
a346af3e | 1851 | for (addr = 0; addr < gdbserver_state.g_cpu->gdb_num_g_regs && len > 0; |
287ca120 | 1852 | addr++) { |
a346af3e | 1853 | reg_size = gdb_write_register(gdbserver_state.g_cpu, registers, addr); |
287ca120 JD |
1854 | len -= reg_size; |
1855 | registers += reg_size; | |
1856 | } | |
a346af3e | 1857 | put_packet("OK"); |
287ca120 JD |
1858 | } |
1859 | ||
26a16181 | 1860 | static void handle_read_all_regs(GArray *params, void *user_ctx) |
397d1370 JD |
1861 | { |
1862 | target_ulong addr, len; | |
1863 | ||
a346af3e | 1864 | cpu_synchronize_state(gdbserver_state.g_cpu); |
a010bdbe | 1865 | g_byte_array_set_size(gdbserver_state.mem_buf, 0); |
397d1370 | 1866 | len = 0; |
a346af3e | 1867 | for (addr = 0; addr < gdbserver_state.g_cpu->gdb_num_g_regs; addr++) { |
4a25f1b9 | 1868 | len += gdb_read_register(gdbserver_state.g_cpu, |
a010bdbe | 1869 | gdbserver_state.mem_buf, |
397d1370 JD |
1870 | addr); |
1871 | } | |
a010bdbe | 1872 | g_assert(len == gdbserver_state.mem_buf->len); |
397d1370 | 1873 | |
4a25f1b9 | 1874 | memtohex(gdbserver_state.str_buf, gdbserver_state.mem_buf->data, len); |
308f9e88 | 1875 | put_strbuf(); |
397d1370 JD |
1876 | } |
1877 | ||
26a16181 | 1878 | static void handle_file_io(GArray *params, void *user_ctx) |
4b20fab1 | 1879 | { |
26a16181 | 1880 | if (params->len >= 1 && gdbserver_state.current_syscall_cb) { |
64c8c6a9 RH |
1881 | uint64_t ret; |
1882 | int err; | |
4b20fab1 | 1883 | |
64c8c6a9 | 1884 | ret = get_param(params, 0)->val_ull; |
26a16181 | 1885 | if (params->len >= 2) { |
64c8c6a9 | 1886 | err = get_param(params, 1)->val_ull; |
c6ee9521 SL |
1887 | } else { |
1888 | err = 0; | |
1889 | } | |
c805e118 RH |
1890 | |
1891 | /* Convert GDB error numbers back to host error numbers. */ | |
1892 | #define E(X) case GDB_E##X: err = E##X; break | |
1893 | switch (err) { | |
1894 | case 0: | |
1895 | break; | |
1896 | E(PERM); | |
1897 | E(NOENT); | |
1898 | E(INTR); | |
1899 | E(BADF); | |
1900 | E(ACCES); | |
1901 | E(FAULT); | |
1902 | E(BUSY); | |
1903 | E(EXIST); | |
1904 | E(NODEV); | |
1905 | E(NOTDIR); | |
1906 | E(ISDIR); | |
1907 | E(INVAL); | |
1908 | E(NFILE); | |
1909 | E(MFILE); | |
1910 | E(FBIG); | |
1911 | E(NOSPC); | |
1912 | E(SPIPE); | |
1913 | E(ROFS); | |
1914 | E(NAMETOOLONG); | |
1915 | default: | |
1916 | err = EINVAL; | |
1917 | break; | |
1918 | } | |
1919 | #undef E | |
1920 | ||
a346af3e AB |
1921 | gdbserver_state.current_syscall_cb(gdbserver_state.c_cpu, ret, err); |
1922 | gdbserver_state.current_syscall_cb = NULL; | |
4b20fab1 JD |
1923 | } |
1924 | ||
26a16181 | 1925 | if (params->len >= 3 && get_param(params, 2)->opcode == (uint8_t)'C') { |
a346af3e | 1926 | put_packet("T02"); |
4b20fab1 JD |
1927 | return; |
1928 | } | |
1929 | ||
a346af3e | 1930 | gdb_continue(); |
4b20fab1 JD |
1931 | } |
1932 | ||
26a16181 | 1933 | static void handle_step(GArray *params, void *user_ctx) |
933f80dd | 1934 | { |
26a16181 AB |
1935 | if (params->len) { |
1936 | gdb_set_cpu_pc((target_ulong)get_param(params, 0)->val_ull); | |
933f80dd JD |
1937 | } |
1938 | ||
ecd39d62 | 1939 | cpu_single_step(gdbserver_state.c_cpu, gdbserver_state.sstep_flags); |
a346af3e | 1940 | gdb_continue(); |
933f80dd JD |
1941 | } |
1942 | ||
26a16181 | 1943 | static void handle_backward(GArray *params, void *user_ctx) |
fda8458b | 1944 | { |
ed12f5b4 | 1945 | if (!stub_can_reverse()) { |
fda8458b PD |
1946 | put_packet("E22"); |
1947 | } | |
26a16181 AB |
1948 | if (params->len == 1) { |
1949 | switch (get_param(params, 0)->opcode) { | |
fda8458b PD |
1950 | case 's': |
1951 | if (replay_reverse_step()) { | |
1952 | gdb_continue(); | |
1953 | } else { | |
1954 | put_packet("E14"); | |
1955 | } | |
1956 | return; | |
cda38259 PD |
1957 | case 'c': |
1958 | if (replay_reverse_continue()) { | |
1959 | gdb_continue(); | |
1960 | } else { | |
1961 | put_packet("E14"); | |
1962 | } | |
1963 | return; | |
fda8458b PD |
1964 | } |
1965 | } | |
1966 | ||
1967 | /* Default invalid command */ | |
1968 | put_packet(""); | |
1969 | } | |
1970 | ||
26a16181 | 1971 | static void handle_v_cont_query(GArray *params, void *user_ctx) |
8536ec02 | 1972 | { |
a346af3e | 1973 | put_packet("vCont;c;C;s;S"); |
8536ec02 JD |
1974 | } |
1975 | ||
26a16181 | 1976 | static void handle_v_cont(GArray *params, void *user_ctx) |
8536ec02 JD |
1977 | { |
1978 | int res; | |
1979 | ||
26a16181 | 1980 | if (!params->len) { |
8536ec02 JD |
1981 | return; |
1982 | } | |
1983 | ||
26a16181 | 1984 | res = gdb_handle_vcont(get_param(params, 0)->data); |
8536ec02 | 1985 | if ((res == -EINVAL) || (res == -ERANGE)) { |
a346af3e | 1986 | put_packet("E22"); |
8536ec02 | 1987 | } else if (res) { |
a346af3e | 1988 | put_packet(""); |
8536ec02 JD |
1989 | } |
1990 | } | |
1991 | ||
26a16181 | 1992 | static void handle_v_attach(GArray *params, void *user_ctx) |
8536ec02 JD |
1993 | { |
1994 | GDBProcess *process; | |
1995 | CPUState *cpu; | |
8536ec02 | 1996 | |
308f9e88 | 1997 | g_string_assign(gdbserver_state.str_buf, "E22"); |
26a16181 | 1998 | if (!params->len) { |
8536ec02 JD |
1999 | goto cleanup; |
2000 | } | |
2001 | ||
26a16181 | 2002 | process = gdb_get_process(get_param(params, 0)->val_ul); |
8536ec02 JD |
2003 | if (!process) { |
2004 | goto cleanup; | |
2005 | } | |
2006 | ||
a346af3e | 2007 | cpu = get_first_cpu_in_process(process); |
8536ec02 JD |
2008 | if (!cpu) { |
2009 | goto cleanup; | |
2010 | } | |
2011 | ||
2012 | process->attached = true; | |
a346af3e AB |
2013 | gdbserver_state.g_cpu = cpu; |
2014 | gdbserver_state.c_cpu = cpu; | |
8536ec02 | 2015 | |
308f9e88 AB |
2016 | g_string_printf(gdbserver_state.str_buf, "T%02xthread:", GDB_SIGNAL_TRAP); |
2017 | gdb_append_thread_id(cpu, gdbserver_state.str_buf); | |
2018 | g_string_append_c(gdbserver_state.str_buf, ';'); | |
8536ec02 | 2019 | cleanup: |
308f9e88 | 2020 | put_strbuf(); |
8536ec02 JD |
2021 | } |
2022 | ||
26a16181 | 2023 | static void handle_v_kill(GArray *params, void *user_ctx) |
8536ec02 JD |
2024 | { |
2025 | /* Kill the target */ | |
a346af3e | 2026 | put_packet("OK"); |
8536ec02 | 2027 | error_report("QEMU: Terminated via GDBstub"); |
b9e10c6c | 2028 | gdb_exit(0); |
8536ec02 JD |
2029 | exit(0); |
2030 | } | |
2031 | ||
305bea06 | 2032 | static const GdbCmdParseEntry gdb_v_commands_table[] = { |
8536ec02 JD |
2033 | /* Order is important if has same prefix */ |
2034 | { | |
2035 | .handler = handle_v_cont_query, | |
2036 | .cmd = "Cont?", | |
2037 | .cmd_startswith = 1 | |
2038 | }, | |
2039 | { | |
2040 | .handler = handle_v_cont, | |
2041 | .cmd = "Cont", | |
2042 | .cmd_startswith = 1, | |
2043 | .schema = "s0" | |
2044 | }, | |
2045 | { | |
2046 | .handler = handle_v_attach, | |
2047 | .cmd = "Attach;", | |
2048 | .cmd_startswith = 1, | |
2049 | .schema = "l0" | |
2050 | }, | |
2051 | { | |
2052 | .handler = handle_v_kill, | |
2053 | .cmd = "Kill;", | |
2054 | .cmd_startswith = 1 | |
2055 | }, | |
2056 | }; | |
2057 | ||
26a16181 | 2058 | static void handle_v_commands(GArray *params, void *user_ctx) |
8536ec02 | 2059 | { |
26a16181 | 2060 | if (!params->len) { |
8536ec02 JD |
2061 | return; |
2062 | } | |
2063 | ||
26a16181 | 2064 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
8536ec02 JD |
2065 | gdb_v_commands_table, |
2066 | ARRAY_SIZE(gdb_v_commands_table))) { | |
a346af3e | 2067 | put_packet(""); |
8536ec02 JD |
2068 | } |
2069 | } | |
2070 | ||
26a16181 | 2071 | static void handle_query_qemu_sstepbits(GArray *params, void *user_ctx) |
2704efad | 2072 | { |
ecd39d62 ML |
2073 | g_string_printf(gdbserver_state.str_buf, "ENABLE=%x", SSTEP_ENABLE); |
2074 | ||
2075 | if (gdbserver_state.supported_sstep_flags & SSTEP_NOIRQ) { | |
2076 | g_string_append_printf(gdbserver_state.str_buf, ",NOIRQ=%x", | |
2077 | SSTEP_NOIRQ); | |
2078 | } | |
2079 | ||
2080 | if (gdbserver_state.supported_sstep_flags & SSTEP_NOTIMER) { | |
2081 | g_string_append_printf(gdbserver_state.str_buf, ",NOTIMER=%x", | |
2082 | SSTEP_NOTIMER); | |
2083 | } | |
2084 | ||
308f9e88 | 2085 | put_strbuf(); |
2704efad JD |
2086 | } |
2087 | ||
26a16181 | 2088 | static void handle_set_qemu_sstep(GArray *params, void *user_ctx) |
2704efad | 2089 | { |
ecd39d62 ML |
2090 | int new_sstep_flags; |
2091 | ||
26a16181 | 2092 | if (!params->len) { |
2704efad JD |
2093 | return; |
2094 | } | |
2095 | ||
ecd39d62 ML |
2096 | new_sstep_flags = get_param(params, 0)->val_ul; |
2097 | ||
2098 | if (new_sstep_flags & ~gdbserver_state.supported_sstep_flags) { | |
2099 | put_packet("E22"); | |
2100 | return; | |
2101 | } | |
2102 | ||
2103 | gdbserver_state.sstep_flags = new_sstep_flags; | |
a346af3e | 2104 | put_packet("OK"); |
2704efad JD |
2105 | } |
2106 | ||
26a16181 | 2107 | static void handle_query_qemu_sstep(GArray *params, void *user_ctx) |
2704efad | 2108 | { |
ecd39d62 ML |
2109 | g_string_printf(gdbserver_state.str_buf, "0x%x", |
2110 | gdbserver_state.sstep_flags); | |
308f9e88 | 2111 | put_strbuf(); |
2704efad JD |
2112 | } |
2113 | ||
26a16181 | 2114 | static void handle_query_curr_tid(GArray *params, void *user_ctx) |
b4608c04 | 2115 | { |
2e0f2cfb | 2116 | CPUState *cpu; |
2704efad | 2117 | GDBProcess *process; |
2704efad JD |
2118 | |
2119 | /* | |
2120 | * "Current thread" remains vague in the spec, so always return | |
2121 | * the first thread of the current process (gdb returns the | |
2122 | * first thread). | |
2123 | */ | |
a346af3e AB |
2124 | process = gdb_get_cpu_process(gdbserver_state.g_cpu); |
2125 | cpu = get_first_cpu_in_process(process); | |
308f9e88 AB |
2126 | g_string_assign(gdbserver_state.str_buf, "QC"); |
2127 | gdb_append_thread_id(cpu, gdbserver_state.str_buf); | |
2128 | put_strbuf(); | |
2704efad JD |
2129 | } |
2130 | ||
26a16181 | 2131 | static void handle_query_threads(GArray *params, void *user_ctx) |
2704efad | 2132 | { |
a346af3e AB |
2133 | if (!gdbserver_state.query_cpu) { |
2134 | put_packet("l"); | |
2704efad JD |
2135 | return; |
2136 | } | |
2137 | ||
308f9e88 AB |
2138 | g_string_assign(gdbserver_state.str_buf, "m"); |
2139 | gdb_append_thread_id(gdbserver_state.query_cpu, gdbserver_state.str_buf); | |
2140 | put_strbuf(); | |
a346af3e | 2141 | gdbserver_state.query_cpu = gdb_next_attached_cpu(gdbserver_state.query_cpu); |
2704efad JD |
2142 | } |
2143 | ||
26a16181 | 2144 | static void handle_query_first_threads(GArray *params, void *user_ctx) |
2704efad | 2145 | { |
a346af3e | 2146 | gdbserver_state.query_cpu = gdb_first_attached_cpu(); |
26a16181 | 2147 | handle_query_threads(params, user_ctx); |
2704efad JD |
2148 | } |
2149 | ||
26a16181 | 2150 | static void handle_query_thread_extra(GArray *params, void *user_ctx) |
2704efad | 2151 | { |
308f9e88 | 2152 | g_autoptr(GString) rs = g_string_new(NULL); |
2704efad | 2153 | CPUState *cpu; |
2704efad | 2154 | |
26a16181 AB |
2155 | if (!params->len || |
2156 | get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) { | |
a346af3e | 2157 | put_packet("E22"); |
2704efad JD |
2158 | return; |
2159 | } | |
2160 | ||
26a16181 AB |
2161 | cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid, |
2162 | get_param(params, 0)->thread_id.tid); | |
2704efad JD |
2163 | if (!cpu) { |
2164 | return; | |
2165 | } | |
2166 | ||
2167 | cpu_synchronize_state(cpu); | |
2168 | ||
a346af3e | 2169 | if (gdbserver_state.multiprocess && (gdbserver_state.process_num > 1)) { |
2704efad JD |
2170 | /* Print the CPU model and name in multiprocess mode */ |
2171 | ObjectClass *oc = object_get_class(OBJECT(cpu)); | |
2172 | const char *cpu_model = object_class_get_name(oc); | |
7a309cc9 | 2173 | const char *cpu_name = |
076b2fad | 2174 | object_get_canonical_path_component(OBJECT(cpu)); |
308f9e88 AB |
2175 | g_string_printf(rs, "%s %s [%s]", cpu_model, cpu_name, |
2176 | cpu->halted ? "halted " : "running"); | |
2704efad | 2177 | } else { |
308f9e88 | 2178 | g_string_printf(rs, "CPU#%d [%s]", cpu->cpu_index, |
2704efad JD |
2179 | cpu->halted ? "halted " : "running"); |
2180 | } | |
308f9e88 AB |
2181 | trace_gdbstub_op_extra_info(rs->str); |
2182 | memtohex(gdbserver_state.str_buf, (uint8_t *)rs->str, rs->len); | |
2183 | put_strbuf(); | |
2704efad JD |
2184 | } |
2185 | ||
2186 | #ifdef CONFIG_USER_ONLY | |
26a16181 | 2187 | static void handle_query_offsets(GArray *params, void *user_ctx) |
2704efad JD |
2188 | { |
2189 | TaskState *ts; | |
2190 | ||
a346af3e | 2191 | ts = gdbserver_state.c_cpu->opaque; |
308f9e88 AB |
2192 | g_string_printf(gdbserver_state.str_buf, |
2193 | "Text=" TARGET_ABI_FMT_lx | |
2194 | ";Data=" TARGET_ABI_FMT_lx | |
2195 | ";Bss=" TARGET_ABI_FMT_lx, | |
2196 | ts->info->code_offset, | |
2197 | ts->info->data_offset, | |
2198 | ts->info->data_offset); | |
2199 | put_strbuf(); | |
2704efad JD |
2200 | } |
2201 | #else | |
26a16181 | 2202 | static void handle_query_rcmd(GArray *params, void *user_ctx) |
2704efad | 2203 | { |
4a25f1b9 | 2204 | const guint8 zero = 0; |
2704efad JD |
2205 | int len; |
2206 | ||
26a16181 | 2207 | if (!params->len) { |
a346af3e | 2208 | put_packet("E22"); |
2704efad JD |
2209 | return; |
2210 | } | |
2211 | ||
26a16181 | 2212 | len = strlen(get_param(params, 0)->data); |
2704efad | 2213 | if (len % 2) { |
a346af3e | 2214 | put_packet("E01"); |
2704efad JD |
2215 | return; |
2216 | } | |
2217 | ||
4a25f1b9 | 2218 | g_assert(gdbserver_state.mem_buf->len == 0); |
2704efad | 2219 | len = len / 2; |
26a16181 | 2220 | hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len); |
4a25f1b9 AB |
2221 | g_byte_array_append(gdbserver_state.mem_buf, &zero, 1); |
2222 | qemu_chr_be_write(gdbserver_state.mon_chr, gdbserver_state.mem_buf->data, | |
2223 | gdbserver_state.mem_buf->len); | |
a346af3e | 2224 | put_packet("OK"); |
2704efad JD |
2225 | } |
2226 | #endif | |
2227 | ||
26a16181 | 2228 | static void handle_query_supported(GArray *params, void *user_ctx) |
2704efad JD |
2229 | { |
2230 | CPUClass *cc; | |
2231 | ||
308f9e88 | 2232 | g_string_printf(gdbserver_state.str_buf, "PacketSize=%x", MAX_PACKET_LENGTH); |
2704efad JD |
2233 | cc = CPU_GET_CLASS(first_cpu); |
2234 | if (cc->gdb_core_xml_file) { | |
308f9e88 | 2235 | g_string_append(gdbserver_state.str_buf, ";qXfer:features:read+"); |
2704efad JD |
2236 | } |
2237 | ||
ed12f5b4 | 2238 | if (stub_can_reverse()) { |
cda38259 PD |
2239 | g_string_append(gdbserver_state.str_buf, |
2240 | ";ReverseStep+;ReverseContinue+"); | |
fda8458b PD |
2241 | } |
2242 | ||
51c623b0 LY |
2243 | #ifdef CONFIG_USER_ONLY |
2244 | if (gdbserver_state.c_cpu->opaque) { | |
2245 | g_string_append(gdbserver_state.str_buf, ";qXfer:auxv:read+"); | |
2246 | } | |
2247 | #endif | |
2248 | ||
26a16181 AB |
2249 | if (params->len && |
2250 | strstr(get_param(params, 0)->data, "multiprocess+")) { | |
a346af3e | 2251 | gdbserver_state.multiprocess = true; |
2704efad JD |
2252 | } |
2253 | ||
3bc2609d | 2254 | g_string_append(gdbserver_state.str_buf, ";vContSupported+;multiprocess+"); |
308f9e88 | 2255 | put_strbuf(); |
2704efad JD |
2256 | } |
2257 | ||
26a16181 | 2258 | static void handle_query_xfer_features(GArray *params, void *user_ctx) |
2704efad | 2259 | { |
c145eeae | 2260 | GDBProcess *process; |
5b24c641 | 2261 | CPUClass *cc; |
2704efad JD |
2262 | unsigned long len, total_len, addr; |
2263 | const char *xml; | |
b4608c04 | 2264 | const char *p; |
2704efad | 2265 | |
26a16181 | 2266 | if (params->len < 3) { |
a346af3e | 2267 | put_packet("E22"); |
2704efad JD |
2268 | return; |
2269 | } | |
2270 | ||
a346af3e AB |
2271 | process = gdb_get_cpu_process(gdbserver_state.g_cpu); |
2272 | cc = CPU_GET_CLASS(gdbserver_state.g_cpu); | |
2704efad | 2273 | if (!cc->gdb_core_xml_file) { |
a346af3e | 2274 | put_packet(""); |
2704efad JD |
2275 | return; |
2276 | } | |
2277 | ||
2278 | gdb_has_xml = true; | |
26a16181 | 2279 | p = get_param(params, 0)->data; |
a346af3e | 2280 | xml = get_feature_xml(p, &p, process); |
2704efad | 2281 | if (!xml) { |
a346af3e | 2282 | put_packet("E00"); |
2704efad JD |
2283 | return; |
2284 | } | |
2285 | ||
26a16181 AB |
2286 | addr = get_param(params, 1)->val_ul; |
2287 | len = get_param(params, 2)->val_ul; | |
2704efad JD |
2288 | total_len = strlen(xml); |
2289 | if (addr > total_len) { | |
a346af3e | 2290 | put_packet("E00"); |
2704efad JD |
2291 | return; |
2292 | } | |
2293 | ||
2294 | if (len > (MAX_PACKET_LENGTH - 5) / 2) { | |
2295 | len = (MAX_PACKET_LENGTH - 5) / 2; | |
2296 | } | |
2297 | ||
2298 | if (len < total_len - addr) { | |
308f9e88 AB |
2299 | g_string_assign(gdbserver_state.str_buf, "m"); |
2300 | memtox(gdbserver_state.str_buf, xml + addr, len); | |
2704efad | 2301 | } else { |
308f9e88 AB |
2302 | g_string_assign(gdbserver_state.str_buf, "l"); |
2303 | memtox(gdbserver_state.str_buf, xml + addr, total_len - addr); | |
2704efad JD |
2304 | } |
2305 | ||
308f9e88 AB |
2306 | put_packet_binary(gdbserver_state.str_buf->str, |
2307 | gdbserver_state.str_buf->len, true); | |
2704efad JD |
2308 | } |
2309 | ||
51c623b0 | 2310 | #if defined(CONFIG_USER_ONLY) && defined(CONFIG_LINUX_USER) |
26a16181 | 2311 | static void handle_query_xfer_auxv(GArray *params, void *user_ctx) |
51c623b0 LY |
2312 | { |
2313 | TaskState *ts; | |
2314 | unsigned long offset, len, saved_auxv, auxv_len; | |
51c623b0 | 2315 | |
26a16181 | 2316 | if (params->len < 2) { |
51c623b0 LY |
2317 | put_packet("E22"); |
2318 | return; | |
2319 | } | |
2320 | ||
26a16181 AB |
2321 | offset = get_param(params, 0)->val_ul; |
2322 | len = get_param(params, 1)->val_ul; | |
51c623b0 LY |
2323 | ts = gdbserver_state.c_cpu->opaque; |
2324 | saved_auxv = ts->info->saved_auxv; | |
2325 | auxv_len = ts->info->auxv_len; | |
6e3dd757 RH |
2326 | |
2327 | if (offset >= auxv_len) { | |
51c623b0 LY |
2328 | put_packet("E00"); |
2329 | return; | |
2330 | } | |
2331 | ||
2332 | if (len > (MAX_PACKET_LENGTH - 5) / 2) { | |
2333 | len = (MAX_PACKET_LENGTH - 5) / 2; | |
2334 | } | |
2335 | ||
2336 | if (len < auxv_len - offset) { | |
2337 | g_string_assign(gdbserver_state.str_buf, "m"); | |
51c623b0 LY |
2338 | } else { |
2339 | g_string_assign(gdbserver_state.str_buf, "l"); | |
6e3dd757 RH |
2340 | len = auxv_len - offset; |
2341 | } | |
2342 | ||
2343 | g_byte_array_set_size(gdbserver_state.mem_buf, len); | |
2344 | if (target_memory_rw_debug(gdbserver_state.g_cpu, saved_auxv + offset, | |
2345 | gdbserver_state.mem_buf->data, len, false)) { | |
2346 | put_packet("E14"); | |
2347 | return; | |
51c623b0 LY |
2348 | } |
2349 | ||
6e3dd757 RH |
2350 | memtox(gdbserver_state.str_buf, |
2351 | (const char *)gdbserver_state.mem_buf->data, len); | |
51c623b0 LY |
2352 | put_packet_binary(gdbserver_state.str_buf->str, |
2353 | gdbserver_state.str_buf->len, true); | |
2354 | } | |
2355 | #endif | |
2356 | ||
26a16181 | 2357 | static void handle_query_attached(GArray *params, void *user_ctx) |
2704efad | 2358 | { |
a346af3e | 2359 | put_packet(GDB_ATTACHED); |
2704efad JD |
2360 | } |
2361 | ||
26a16181 | 2362 | static void handle_query_qemu_supported(GArray *params, void *user_ctx) |
2704efad | 2363 | { |
308f9e88 | 2364 | g_string_printf(gdbserver_state.str_buf, "sstepbits;sstep"); |
ab4752ec | 2365 | #ifndef CONFIG_USER_ONLY |
308f9e88 | 2366 | g_string_append(gdbserver_state.str_buf, ";PhyMemMode"); |
ab4752ec | 2367 | #endif |
308f9e88 | 2368 | put_strbuf(); |
ab4752ec JD |
2369 | } |
2370 | ||
2371 | #ifndef CONFIG_USER_ONLY | |
26a16181 | 2372 | static void handle_query_qemu_phy_mem_mode(GArray *params, |
ab4752ec JD |
2373 | void *user_ctx) |
2374 | { | |
308f9e88 AB |
2375 | g_string_printf(gdbserver_state.str_buf, "%d", phy_memory_mode); |
2376 | put_strbuf(); | |
ab4752ec JD |
2377 | } |
2378 | ||
26a16181 | 2379 | static void handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx) |
ab4752ec | 2380 | { |
26a16181 | 2381 | if (!params->len) { |
a346af3e | 2382 | put_packet("E22"); |
ab4752ec JD |
2383 | return; |
2384 | } | |
2385 | ||
26a16181 | 2386 | if (!get_param(params, 0)->val_ul) { |
ab4752ec JD |
2387 | phy_memory_mode = 0; |
2388 | } else { | |
2389 | phy_memory_mode = 1; | |
2390 | } | |
a346af3e | 2391 | put_packet("OK"); |
2704efad | 2392 | } |
ab4752ec | 2393 | #endif |
2704efad | 2394 | |
305bea06 | 2395 | static const GdbCmdParseEntry gdb_gen_query_set_common_table[] = { |
2704efad JD |
2396 | /* Order is important if has same prefix */ |
2397 | { | |
2398 | .handler = handle_query_qemu_sstepbits, | |
2399 | .cmd = "qemu.sstepbits", | |
2400 | }, | |
2401 | { | |
2402 | .handler = handle_query_qemu_sstep, | |
2403 | .cmd = "qemu.sstep", | |
2404 | }, | |
2405 | { | |
2406 | .handler = handle_set_qemu_sstep, | |
2407 | .cmd = "qemu.sstep=", | |
2408 | .cmd_startswith = 1, | |
2409 | .schema = "l0" | |
2410 | }, | |
2411 | }; | |
2412 | ||
305bea06 | 2413 | static const GdbCmdParseEntry gdb_gen_query_table[] = { |
2704efad JD |
2414 | { |
2415 | .handler = handle_query_curr_tid, | |
2416 | .cmd = "C", | |
2417 | }, | |
2418 | { | |
2419 | .handler = handle_query_threads, | |
2420 | .cmd = "sThreadInfo", | |
2421 | }, | |
2422 | { | |
2423 | .handler = handle_query_first_threads, | |
2424 | .cmd = "fThreadInfo", | |
2425 | }, | |
2426 | { | |
2427 | .handler = handle_query_thread_extra, | |
2428 | .cmd = "ThreadExtraInfo,", | |
2429 | .cmd_startswith = 1, | |
2430 | .schema = "t0" | |
2431 | }, | |
2432 | #ifdef CONFIG_USER_ONLY | |
2433 | { | |
2434 | .handler = handle_query_offsets, | |
2435 | .cmd = "Offsets", | |
2436 | }, | |
2437 | #else | |
2438 | { | |
2439 | .handler = handle_query_rcmd, | |
2440 | .cmd = "Rcmd,", | |
2441 | .cmd_startswith = 1, | |
2442 | .schema = "s0" | |
2443 | }, | |
2444 | #endif | |
2445 | { | |
2446 | .handler = handle_query_supported, | |
2447 | .cmd = "Supported:", | |
2448 | .cmd_startswith = 1, | |
2449 | .schema = "s0" | |
2450 | }, | |
2451 | { | |
2452 | .handler = handle_query_supported, | |
2453 | .cmd = "Supported", | |
2454 | .schema = "s0" | |
2455 | }, | |
2456 | { | |
2457 | .handler = handle_query_xfer_features, | |
2458 | .cmd = "Xfer:features:read:", | |
2459 | .cmd_startswith = 1, | |
2460 | .schema = "s:l,l0" | |
2461 | }, | |
51c623b0 LY |
2462 | #if defined(CONFIG_USER_ONLY) && defined(CONFIG_LINUX_USER) |
2463 | { | |
2464 | .handler = handle_query_xfer_auxv, | |
2465 | .cmd = "Xfer:auxv:read::", | |
2466 | .cmd_startswith = 1, | |
2467 | .schema = "l,l0" | |
2468 | }, | |
2469 | #endif | |
2704efad JD |
2470 | { |
2471 | .handler = handle_query_attached, | |
2472 | .cmd = "Attached:", | |
2473 | .cmd_startswith = 1 | |
2474 | }, | |
2475 | { | |
2476 | .handler = handle_query_attached, | |
2477 | .cmd = "Attached", | |
2478 | }, | |
2479 | { | |
2480 | .handler = handle_query_qemu_supported, | |
2481 | .cmd = "qemu.Supported", | |
2482 | }, | |
ab4752ec JD |
2483 | #ifndef CONFIG_USER_ONLY |
2484 | { | |
2485 | .handler = handle_query_qemu_phy_mem_mode, | |
2486 | .cmd = "qemu.PhyMemMode", | |
2487 | }, | |
2488 | #endif | |
2704efad JD |
2489 | }; |
2490 | ||
305bea06 | 2491 | static const GdbCmdParseEntry gdb_gen_set_table[] = { |
2704efad JD |
2492 | /* Order is important if has same prefix */ |
2493 | { | |
2494 | .handler = handle_set_qemu_sstep, | |
2495 | .cmd = "qemu.sstep:", | |
2496 | .cmd_startswith = 1, | |
2497 | .schema = "l0" | |
2498 | }, | |
ab4752ec JD |
2499 | #ifndef CONFIG_USER_ONLY |
2500 | { | |
2501 | .handler = handle_set_qemu_phy_mem_mode, | |
2502 | .cmd = "qemu.PhyMemMode:", | |
2503 | .cmd_startswith = 1, | |
2504 | .schema = "l0" | |
2505 | }, | |
2506 | #endif | |
2704efad JD |
2507 | }; |
2508 | ||
26a16181 | 2509 | static void handle_gen_query(GArray *params, void *user_ctx) |
2704efad | 2510 | { |
26a16181 | 2511 | if (!params->len) { |
2704efad JD |
2512 | return; |
2513 | } | |
2514 | ||
26a16181 | 2515 | if (!process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
2516 | gdb_gen_query_set_common_table, |
2517 | ARRAY_SIZE(gdb_gen_query_set_common_table))) { | |
2518 | return; | |
2519 | } | |
2520 | ||
26a16181 | 2521 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
2522 | gdb_gen_query_table, |
2523 | ARRAY_SIZE(gdb_gen_query_table))) { | |
a346af3e | 2524 | put_packet(""); |
2704efad JD |
2525 | } |
2526 | } | |
2527 | ||
26a16181 | 2528 | static void handle_gen_set(GArray *params, void *user_ctx) |
2704efad | 2529 | { |
26a16181 | 2530 | if (!params->len) { |
2704efad JD |
2531 | return; |
2532 | } | |
2533 | ||
26a16181 | 2534 | if (!process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
2535 | gdb_gen_query_set_common_table, |
2536 | ARRAY_SIZE(gdb_gen_query_set_common_table))) { | |
2537 | return; | |
2538 | } | |
2539 | ||
26a16181 | 2540 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
2541 | gdb_gen_set_table, |
2542 | ARRAY_SIZE(gdb_gen_set_table))) { | |
a346af3e | 2543 | put_packet(""); |
2704efad JD |
2544 | } |
2545 | } | |
2546 | ||
26a16181 | 2547 | static void handle_target_halt(GArray *params, void *user_ctx) |
7009d579 | 2548 | { |
308f9e88 AB |
2549 | g_string_printf(gdbserver_state.str_buf, "T%02xthread:", GDB_SIGNAL_TRAP); |
2550 | gdb_append_thread_id(gdbserver_state.c_cpu, gdbserver_state.str_buf); | |
2551 | g_string_append_c(gdbserver_state.str_buf, ';'); | |
2552 | put_strbuf(); | |
7009d579 JD |
2553 | /* |
2554 | * Remove all the breakpoints when this query is issued, | |
2555 | * because gdb is doing an initial connect and the state | |
2556 | * should be cleaned up. | |
2557 | */ | |
2558 | gdb_breakpoint_remove_all(); | |
2559 | } | |
2560 | ||
a346af3e | 2561 | static int gdb_handle_packet(const char *line_buf) |
2704efad | 2562 | { |
3e2c1261 | 2563 | const GdbCmdParseEntry *cmd_parser = NULL; |
3b46e624 | 2564 | |
5c9522b3 | 2565 | trace_gdbstub_io_command(line_buf); |
118e2268 | 2566 | |
3f1cbac7 | 2567 | switch (line_buf[0]) { |
53fd6554 | 2568 | case '!': |
a346af3e | 2569 | put_packet("OK"); |
53fd6554 | 2570 | break; |
858693c6 | 2571 | case '?': |
7009d579 JD |
2572 | { |
2573 | static const GdbCmdParseEntry target_halted_cmd_desc = { | |
2574 | .handler = handle_target_halt, | |
2575 | .cmd = "?", | |
2576 | .cmd_startswith = 1 | |
2577 | }; | |
2578 | cmd_parser = &target_halted_cmd_desc; | |
2579 | } | |
858693c6 FB |
2580 | break; |
2581 | case 'c': | |
4d6e3fe2 JD |
2582 | { |
2583 | static const GdbCmdParseEntry continue_cmd_desc = { | |
2584 | .handler = handle_continue, | |
2585 | .cmd = "c", | |
2586 | .cmd_startswith = 1, | |
2587 | .schema = "L0" | |
2588 | }; | |
2589 | cmd_parser = &continue_cmd_desc; | |
858693c6 | 2590 | } |
4d6e3fe2 | 2591 | break; |
1f487ee9 | 2592 | case 'C': |
ccc47d5d JD |
2593 | { |
2594 | static const GdbCmdParseEntry cont_with_sig_cmd_desc = { | |
2595 | .handler = handle_cont_with_sig, | |
2596 | .cmd = "C", | |
2597 | .cmd_startswith = 1, | |
2598 | .schema = "l0" | |
2599 | }; | |
2600 | cmd_parser = &cont_with_sig_cmd_desc; | |
2601 | } | |
2602 | break; | |
dd32aa10 | 2603 | case 'v': |
8536ec02 JD |
2604 | { |
2605 | static const GdbCmdParseEntry v_cmd_desc = { | |
2606 | .handler = handle_v_commands, | |
2607 | .cmd = "v", | |
2608 | .cmd_startswith = 1, | |
2609 | .schema = "s0" | |
2610 | }; | |
2611 | cmd_parser = &v_cmd_desc; | |
dd32aa10 | 2612 | } |
8536ec02 | 2613 | break; |
7d03f82f EI |
2614 | case 'k': |
2615 | /* Kill the target */ | |
7ae6c571 | 2616 | error_report("QEMU: Terminated via GDBstub"); |
b9e10c6c | 2617 | gdb_exit(0); |
7d03f82f EI |
2618 | exit(0); |
2619 | case 'D': | |
3e2c1261 JD |
2620 | { |
2621 | static const GdbCmdParseEntry detach_cmd_desc = { | |
2622 | .handler = handle_detach, | |
2623 | .cmd = "D", | |
2624 | .cmd_startswith = 1, | |
2625 | .schema = "?.l0" | |
2626 | }; | |
2627 | cmd_parser = &detach_cmd_desc; | |
546f3c67 | 2628 | } |
7d03f82f | 2629 | break; |
858693c6 | 2630 | case 's': |
933f80dd JD |
2631 | { |
2632 | static const GdbCmdParseEntry step_cmd_desc = { | |
2633 | .handler = handle_step, | |
2634 | .cmd = "s", | |
2635 | .cmd_startswith = 1, | |
2636 | .schema = "L0" | |
2637 | }; | |
2638 | cmd_parser = &step_cmd_desc; | |
858693c6 | 2639 | } |
933f80dd | 2640 | break; |
fda8458b PD |
2641 | case 'b': |
2642 | { | |
2643 | static const GdbCmdParseEntry backward_cmd_desc = { | |
2644 | .handler = handle_backward, | |
2645 | .cmd = "b", | |
2646 | .cmd_startswith = 1, | |
2647 | .schema = "o0" | |
2648 | }; | |
2649 | cmd_parser = &backward_cmd_desc; | |
2650 | } | |
2651 | break; | |
a2d1ebaf PB |
2652 | case 'F': |
2653 | { | |
4b20fab1 JD |
2654 | static const GdbCmdParseEntry file_io_cmd_desc = { |
2655 | .handler = handle_file_io, | |
2656 | .cmd = "F", | |
2657 | .cmd_startswith = 1, | |
2658 | .schema = "L,L,o0" | |
2659 | }; | |
2660 | cmd_parser = &file_io_cmd_desc; | |
a2d1ebaf PB |
2661 | } |
2662 | break; | |
858693c6 | 2663 | case 'g': |
397d1370 JD |
2664 | { |
2665 | static const GdbCmdParseEntry read_all_regs_cmd_desc = { | |
2666 | .handler = handle_read_all_regs, | |
2667 | .cmd = "g", | |
2668 | .cmd_startswith = 1 | |
2669 | }; | |
2670 | cmd_parser = &read_all_regs_cmd_desc; | |
56aebc89 | 2671 | } |
858693c6 FB |
2672 | break; |
2673 | case 'G': | |
287ca120 JD |
2674 | { |
2675 | static const GdbCmdParseEntry write_all_regs_cmd_desc = { | |
2676 | .handler = handle_write_all_regs, | |
2677 | .cmd = "G", | |
2678 | .cmd_startswith = 1, | |
2679 | .schema = "s0" | |
2680 | }; | |
2681 | cmd_parser = &write_all_regs_cmd_desc; | |
56aebc89 | 2682 | } |
858693c6 FB |
2683 | break; |
2684 | case 'm': | |
da92e236 JD |
2685 | { |
2686 | static const GdbCmdParseEntry read_mem_cmd_desc = { | |
2687 | .handler = handle_read_mem, | |
2688 | .cmd = "m", | |
2689 | .cmd_startswith = 1, | |
2690 | .schema = "L,L0" | |
2691 | }; | |
2692 | cmd_parser = &read_mem_cmd_desc; | |
6f970bd9 | 2693 | } |
858693c6 FB |
2694 | break; |
2695 | case 'M': | |
cc0ecc78 JD |
2696 | { |
2697 | static const GdbCmdParseEntry write_mem_cmd_desc = { | |
2698 | .handler = handle_write_mem, | |
2699 | .cmd = "M", | |
2700 | .cmd_startswith = 1, | |
2701 | .schema = "L,L:s0" | |
2702 | }; | |
2703 | cmd_parser = &write_mem_cmd_desc; | |
44520db1 | 2704 | } |
858693c6 | 2705 | break; |
56aebc89 | 2706 | case 'p': |
5d0e57bd JD |
2707 | { |
2708 | static const GdbCmdParseEntry get_reg_cmd_desc = { | |
2709 | .handler = handle_get_reg, | |
2710 | .cmd = "p", | |
2711 | .cmd_startswith = 1, | |
2712 | .schema = "L0" | |
2713 | }; | |
2714 | cmd_parser = &get_reg_cmd_desc; | |
56aebc89 PB |
2715 | } |
2716 | break; | |
2717 | case 'P': | |
62b3320b JD |
2718 | { |
2719 | static const GdbCmdParseEntry set_reg_cmd_desc = { | |
2720 | .handler = handle_set_reg, | |
2721 | .cmd = "P", | |
2722 | .cmd_startswith = 1, | |
2723 | .schema = "L?s0" | |
2724 | }; | |
2725 | cmd_parser = &set_reg_cmd_desc; | |
2726 | } | |
56aebc89 | 2727 | break; |
858693c6 | 2728 | case 'Z': |
77f6ce50 JD |
2729 | { |
2730 | static const GdbCmdParseEntry insert_bp_cmd_desc = { | |
2731 | .handler = handle_insert_bp, | |
2732 | .cmd = "Z", | |
2733 | .cmd_startswith = 1, | |
2734 | .schema = "l?L?L0" | |
2735 | }; | |
2736 | cmd_parser = &insert_bp_cmd_desc; | |
2737 | } | |
2738 | break; | |
858693c6 | 2739 | case 'z': |
77f6ce50 JD |
2740 | { |
2741 | static const GdbCmdParseEntry remove_bp_cmd_desc = { | |
2742 | .handler = handle_remove_bp, | |
2743 | .cmd = "z", | |
2744 | .cmd_startswith = 1, | |
2745 | .schema = "l?L?L0" | |
2746 | }; | |
2747 | cmd_parser = &remove_bp_cmd_desc; | |
2748 | } | |
858693c6 | 2749 | break; |
880a7578 | 2750 | case 'H': |
3a9651d6 JD |
2751 | { |
2752 | static const GdbCmdParseEntry set_thread_cmd_desc = { | |
2753 | .handler = handle_set_thread, | |
2754 | .cmd = "H", | |
2755 | .cmd_startswith = 1, | |
2756 | .schema = "o.t0" | |
2757 | }; | |
2758 | cmd_parser = &set_thread_cmd_desc; | |
880a7578 AL |
2759 | } |
2760 | break; | |
2761 | case 'T': | |
44ffded0 JD |
2762 | { |
2763 | static const GdbCmdParseEntry thread_alive_cmd_desc = { | |
2764 | .handler = handle_thread_alive, | |
2765 | .cmd = "T", | |
2766 | .cmd_startswith = 1, | |
2767 | .schema = "t0" | |
2768 | }; | |
2769 | cmd_parser = &thread_alive_cmd_desc; | |
1e9fa730 | 2770 | } |
880a7578 | 2771 | break; |
978efd6a | 2772 | case 'q': |
2704efad JD |
2773 | { |
2774 | static const GdbCmdParseEntry gen_query_cmd_desc = { | |
2775 | .handler = handle_gen_query, | |
2776 | .cmd = "q", | |
2777 | .cmd_startswith = 1, | |
2778 | .schema = "s0" | |
2779 | }; | |
2780 | cmd_parser = &gen_query_cmd_desc; | |
56aebc89 | 2781 | } |
2704efad JD |
2782 | break; |
2783 | case 'Q': | |
2784 | { | |
2785 | static const GdbCmdParseEntry gen_set_cmd_desc = { | |
2786 | .handler = handle_gen_set, | |
2787 | .cmd = "Q", | |
2788 | .cmd_startswith = 1, | |
2789 | .schema = "s0" | |
2790 | }; | |
2791 | cmd_parser = &gen_set_cmd_desc; | |
a3919386 | 2792 | } |
2704efad | 2793 | break; |
858693c6 | 2794 | default: |
858693c6 | 2795 | /* put empty packet */ |
a346af3e | 2796 | put_packet(""); |
858693c6 FB |
2797 | break; |
2798 | } | |
3e2c1261 | 2799 | |
2bdec398 | 2800 | if (cmd_parser) { |
a346af3e | 2801 | run_cmd_parser(line_buf, cmd_parser); |
2bdec398 | 2802 | } |
3e2c1261 | 2803 | |
858693c6 FB |
2804 | return RS_IDLE; |
2805 | } | |
2806 | ||
64f6b346 | 2807 | void gdb_set_stop_cpu(CPUState *cpu) |
880a7578 | 2808 | { |
a346af3e | 2809 | GDBProcess *p = gdb_get_cpu_process(cpu); |
160d858d LM |
2810 | |
2811 | if (!p->attached) { | |
2812 | /* | |
2813 | * Having a stop CPU corresponding to a process that is not attached | |
2814 | * confuses GDB. So we ignore the request. | |
2815 | */ | |
2816 | return; | |
2817 | } | |
2818 | ||
8d98c445 AB |
2819 | gdbserver_state.c_cpu = cpu; |
2820 | gdbserver_state.g_cpu = cpu; | |
880a7578 AL |
2821 | } |
2822 | ||
1fddef4b | 2823 | #ifndef CONFIG_USER_ONLY |
538f0497 | 2824 | static void gdb_vm_state_change(void *opaque, bool running, RunState state) |
858693c6 | 2825 | { |
a346af3e | 2826 | CPUState *cpu = gdbserver_state.c_cpu; |
308f9e88 AB |
2827 | g_autoptr(GString) buf = g_string_new(NULL); |
2828 | g_autoptr(GString) tid = g_string_new(NULL); | |
d6fc1b39 | 2829 | const char *type; |
858693c6 FB |
2830 | int ret; |
2831 | ||
a346af3e | 2832 | if (running || gdbserver_state.state == RS_INACTIVE) { |
cdb432b2 MI |
2833 | return; |
2834 | } | |
2835 | /* Is there a GDB syscall waiting to be sent? */ | |
a346af3e AB |
2836 | if (gdbserver_state.current_syscall_cb) { |
2837 | put_packet(gdbserver_state.syscall_buf); | |
a2d1ebaf | 2838 | return; |
e07bbac5 | 2839 | } |
95567c27 LM |
2840 | |
2841 | if (cpu == NULL) { | |
2842 | /* No process attached */ | |
2843 | return; | |
2844 | } | |
2845 | ||
308f9e88 | 2846 | gdb_append_thread_id(cpu, tid); |
95567c27 | 2847 | |
1dfb4dd9 | 2848 | switch (state) { |
0461d5a6 | 2849 | case RUN_STATE_DEBUG: |
ff4700b0 AF |
2850 | if (cpu->watchpoint_hit) { |
2851 | switch (cpu->watchpoint_hit->flags & BP_MEM_ACCESS) { | |
a1d1bb31 | 2852 | case BP_MEM_READ: |
d6fc1b39 AL |
2853 | type = "r"; |
2854 | break; | |
a1d1bb31 | 2855 | case BP_MEM_ACCESS: |
d6fc1b39 AL |
2856 | type = "a"; |
2857 | break; | |
2858 | default: | |
2859 | type = ""; | |
2860 | break; | |
2861 | } | |
5c9522b3 DG |
2862 | trace_gdbstub_hit_watchpoint(type, cpu_gdb_index(cpu), |
2863 | (target_ulong)cpu->watchpoint_hit->vaddr); | |
308f9e88 AB |
2864 | g_string_printf(buf, "T%02xthread:%s;%swatch:" TARGET_FMT_lx ";", |
2865 | GDB_SIGNAL_TRAP, tid->str, type, | |
2866 | (target_ulong)cpu->watchpoint_hit->vaddr); | |
ff4700b0 | 2867 | cpu->watchpoint_hit = NULL; |
425189a8 | 2868 | goto send_packet; |
5c9522b3 DG |
2869 | } else { |
2870 | trace_gdbstub_hit_break(); | |
6658ffb8 | 2871 | } |
bbd77c18 | 2872 | tb_flush(cpu); |
ca587a8e | 2873 | ret = GDB_SIGNAL_TRAP; |
425189a8 | 2874 | break; |
0461d5a6 | 2875 | case RUN_STATE_PAUSED: |
5c9522b3 | 2876 | trace_gdbstub_hit_paused(); |
9781e040 | 2877 | ret = GDB_SIGNAL_INT; |
425189a8 | 2878 | break; |
0461d5a6 | 2879 | case RUN_STATE_SHUTDOWN: |
5c9522b3 | 2880 | trace_gdbstub_hit_shutdown(); |
425189a8 JK |
2881 | ret = GDB_SIGNAL_QUIT; |
2882 | break; | |
0461d5a6 | 2883 | case RUN_STATE_IO_ERROR: |
5c9522b3 | 2884 | trace_gdbstub_hit_io_error(); |
425189a8 JK |
2885 | ret = GDB_SIGNAL_IO; |
2886 | break; | |
0461d5a6 | 2887 | case RUN_STATE_WATCHDOG: |
5c9522b3 | 2888 | trace_gdbstub_hit_watchdog(); |
425189a8 JK |
2889 | ret = GDB_SIGNAL_ALRM; |
2890 | break; | |
0461d5a6 | 2891 | case RUN_STATE_INTERNAL_ERROR: |
5c9522b3 | 2892 | trace_gdbstub_hit_internal_error(); |
425189a8 JK |
2893 | ret = GDB_SIGNAL_ABRT; |
2894 | break; | |
0461d5a6 LC |
2895 | case RUN_STATE_SAVE_VM: |
2896 | case RUN_STATE_RESTORE_VM: | |
425189a8 | 2897 | return; |
0461d5a6 | 2898 | case RUN_STATE_FINISH_MIGRATE: |
425189a8 JK |
2899 | ret = GDB_SIGNAL_XCPU; |
2900 | break; | |
2901 | default: | |
5c9522b3 | 2902 | trace_gdbstub_hit_unknown(state); |
425189a8 JK |
2903 | ret = GDB_SIGNAL_UNKNOWN; |
2904 | break; | |
bbeb7b5c | 2905 | } |
226d007d | 2906 | gdb_set_stop_cpu(cpu); |
308f9e88 | 2907 | g_string_printf(buf, "T%02xthread:%s;", ret, tid->str); |
425189a8 JK |
2908 | |
2909 | send_packet: | |
308f9e88 | 2910 | put_packet(buf->str); |
425189a8 JK |
2911 | |
2912 | /* disable single step if it was enabled */ | |
3825b28f | 2913 | cpu_single_step(cpu, 0); |
858693c6 | 2914 | } |
1fddef4b | 2915 | #endif |
858693c6 | 2916 | |
a2d1ebaf PB |
2917 | /* Send a gdb syscall request. |
2918 | This accepts limited printf-style format specifiers, specifically: | |
a87295e8 PB |
2919 | %x - target_ulong argument printed in hex. |
2920 | %lx - 64-bit argument printed in hex. | |
2921 | %s - string pointer (target_ulong) and length (int) pair. */ | |
19239b39 | 2922 | void gdb_do_syscallv(gdb_syscall_complete_cb cb, const char *fmt, va_list va) |
a2d1ebaf | 2923 | { |
a2d1ebaf | 2924 | char *p; |
cdb432b2 | 2925 | char *p_end; |
a2d1ebaf | 2926 | target_ulong addr; |
a87295e8 | 2927 | uint64_t i64; |
a2d1ebaf | 2928 | |
ebf1b4cb | 2929 | if (!gdb_attached()) { |
a2d1ebaf | 2930 | return; |
a346af3e | 2931 | } |
8d98c445 AB |
2932 | |
2933 | gdbserver_state.current_syscall_cb = cb; | |
a2d1ebaf | 2934 | #ifndef CONFIG_USER_ONLY |
0461d5a6 | 2935 | vm_stop(RUN_STATE_DEBUG); |
a2d1ebaf | 2936 | #endif |
8d98c445 AB |
2937 | p = &gdbserver_state.syscall_buf[0]; |
2938 | p_end = &gdbserver_state.syscall_buf[sizeof(gdbserver_state.syscall_buf)]; | |
a2d1ebaf PB |
2939 | *(p++) = 'F'; |
2940 | while (*fmt) { | |
2941 | if (*fmt == '%') { | |
2942 | fmt++; | |
2943 | switch (*fmt++) { | |
2944 | case 'x': | |
2945 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 2946 | p += snprintf(p, p_end - p, TARGET_FMT_lx, addr); |
a2d1ebaf | 2947 | break; |
a87295e8 PB |
2948 | case 'l': |
2949 | if (*(fmt++) != 'x') | |
2950 | goto bad_format; | |
2951 | i64 = va_arg(va, uint64_t); | |
cdb432b2 | 2952 | p += snprintf(p, p_end - p, "%" PRIx64, i64); |
a87295e8 | 2953 | break; |
a2d1ebaf PB |
2954 | case 's': |
2955 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 2956 | p += snprintf(p, p_end - p, TARGET_FMT_lx "/%x", |
363a37d5 | 2957 | addr, va_arg(va, int)); |
a2d1ebaf PB |
2958 | break; |
2959 | default: | |
a87295e8 | 2960 | bad_format: |
7ae6c571 ZY |
2961 | error_report("gdbstub: Bad syscall format string '%s'", |
2962 | fmt - 1); | |
a2d1ebaf PB |
2963 | break; |
2964 | } | |
2965 | } else { | |
2966 | *(p++) = *(fmt++); | |
2967 | } | |
2968 | } | |
8a93e02a | 2969 | *p = 0; |
a2d1ebaf | 2970 | #ifdef CONFIG_USER_ONLY |
a346af3e | 2971 | put_packet(gdbserver_state.syscall_buf); |
4f710866 PM |
2972 | /* Return control to gdb for it to process the syscall request. |
2973 | * Since the protocol requires that gdb hands control back to us | |
2974 | * using a "here are the results" F packet, we don't need to check | |
2975 | * gdb_handlesig's return value (which is the signal to deliver if | |
2976 | * execution was resumed via a continue packet). | |
2977 | */ | |
8d98c445 | 2978 | gdb_handlesig(gdbserver_state.c_cpu, 0); |
a2d1ebaf | 2979 | #else |
cdb432b2 MI |
2980 | /* In this case wait to send the syscall packet until notification that |
2981 | the CPU has stopped. This must be done because if the packet is sent | |
2982 | now the reply from the syscall request could be received while the CPU | |
2983 | is still in the running state, which can cause packets to be dropped | |
2984 | and state transition 'T' packets to be sent while the syscall is still | |
2985 | being processed. */ | |
8d98c445 | 2986 | qemu_cpu_kick(gdbserver_state.c_cpu); |
a2d1ebaf PB |
2987 | #endif |
2988 | } | |
2989 | ||
19239b39 PM |
2990 | void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) |
2991 | { | |
2992 | va_list va; | |
2993 | ||
2994 | va_start(va, fmt); | |
2995 | gdb_do_syscallv(cb, fmt, va); | |
2996 | va_end(va); | |
2997 | } | |
2998 | ||
a346af3e | 2999 | static void gdb_read_byte(uint8_t ch) |
858693c6 | 3000 | { |
60fe76f3 | 3001 | uint8_t reply; |
858693c6 | 3002 | |
1fddef4b | 3003 | #ifndef CONFIG_USER_ONLY |
d116e813 | 3004 | if (gdbserver_state.last_packet->len) { |
4046d913 PB |
3005 | /* Waiting for a response to the last packet. If we see the start |
3006 | of a new command then abandon the previous response. */ | |
3007 | if (ch == '-') { | |
5c9522b3 | 3008 | trace_gdbstub_err_got_nack(); |
d116e813 DH |
3009 | put_buffer(gdbserver_state.last_packet->data, |
3010 | gdbserver_state.last_packet->len); | |
118e2268 | 3011 | } else if (ch == '+') { |
5c9522b3 | 3012 | trace_gdbstub_io_got_ack(); |
118e2268 | 3013 | } else { |
33c846ef | 3014 | trace_gdbstub_io_got_unexpected(ch); |
4046d913 | 3015 | } |
118e2268 | 3016 | |
d116e813 DH |
3017 | if (ch == '+' || ch == '$') { |
3018 | g_byte_array_set_size(gdbserver_state.last_packet, 0); | |
3019 | } | |
4046d913 PB |
3020 | if (ch != '$') |
3021 | return; | |
3022 | } | |
1354869c | 3023 | if (runstate_is_running()) { |
858693c6 FB |
3024 | /* when the CPU is running, we cannot do anything except stop |
3025 | it when receiving a char */ | |
0461d5a6 | 3026 | vm_stop(RUN_STATE_PAUSED); |
5fafdf24 | 3027 | } else |
1fddef4b | 3028 | #endif |
41625033 | 3029 | { |
a346af3e | 3030 | switch(gdbserver_state.state) { |
858693c6 FB |
3031 | case RS_IDLE: |
3032 | if (ch == '$') { | |
4bf43122 | 3033 | /* start of command packet */ |
a346af3e AB |
3034 | gdbserver_state.line_buf_index = 0; |
3035 | gdbserver_state.line_sum = 0; | |
3036 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 | 3037 | } else { |
33c846ef | 3038 | trace_gdbstub_err_garbage(ch); |
c33a346e | 3039 | } |
b4608c04 | 3040 | break; |
858693c6 | 3041 | case RS_GETLINE: |
4bf43122 DG |
3042 | if (ch == '}') { |
3043 | /* start escape sequence */ | |
a346af3e AB |
3044 | gdbserver_state.state = RS_GETLINE_ESC; |
3045 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
3046 | } else if (ch == '*') { |
3047 | /* start run length encoding sequence */ | |
a346af3e AB |
3048 | gdbserver_state.state = RS_GETLINE_RLE; |
3049 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
3050 | } else if (ch == '#') { |
3051 | /* end of command, start of checksum*/ | |
a346af3e AB |
3052 | gdbserver_state.state = RS_CHKSUM1; |
3053 | } else if (gdbserver_state.line_buf_index >= sizeof(gdbserver_state.line_buf) - 1) { | |
5c9522b3 | 3054 | trace_gdbstub_err_overrun(); |
a346af3e | 3055 | gdbserver_state.state = RS_IDLE; |
4bf43122 DG |
3056 | } else { |
3057 | /* unescaped command character */ | |
a346af3e AB |
3058 | gdbserver_state.line_buf[gdbserver_state.line_buf_index++] = ch; |
3059 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
3060 | } |
3061 | break; | |
3062 | case RS_GETLINE_ESC: | |
858693c6 | 3063 | if (ch == '#') { |
4bf43122 | 3064 | /* unexpected end of command in escape sequence */ |
a346af3e AB |
3065 | gdbserver_state.state = RS_CHKSUM1; |
3066 | } else if (gdbserver_state.line_buf_index >= sizeof(gdbserver_state.line_buf) - 1) { | |
4bf43122 | 3067 | /* command buffer overrun */ |
5c9522b3 | 3068 | trace_gdbstub_err_overrun(); |
a346af3e | 3069 | gdbserver_state.state = RS_IDLE; |
4c3a88a2 | 3070 | } else { |
4bf43122 | 3071 | /* parse escaped character and leave escape state */ |
a346af3e AB |
3072 | gdbserver_state.line_buf[gdbserver_state.line_buf_index++] = ch ^ 0x20; |
3073 | gdbserver_state.line_sum += ch; | |
3074 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 DG |
3075 | } |
3076 | break; | |
3077 | case RS_GETLINE_RLE: | |
046aba16 MA |
3078 | /* |
3079 | * Run-length encoding is explained in "Debugging with GDB / | |
3080 | * Appendix E GDB Remote Serial Protocol / Overview". | |
3081 | */ | |
3082 | if (ch < ' ' || ch == '#' || ch == '$' || ch > 126) { | |
4bf43122 | 3083 | /* invalid RLE count encoding */ |
33c846ef | 3084 | trace_gdbstub_err_invalid_repeat(ch); |
a346af3e | 3085 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
3086 | } else { |
3087 | /* decode repeat length */ | |
33c846ef | 3088 | int repeat = ch - ' ' + 3; |
a346af3e | 3089 | if (gdbserver_state.line_buf_index + repeat >= sizeof(gdbserver_state.line_buf) - 1) { |
4bf43122 | 3090 | /* that many repeats would overrun the command buffer */ |
5c9522b3 | 3091 | trace_gdbstub_err_overrun(); |
a346af3e AB |
3092 | gdbserver_state.state = RS_IDLE; |
3093 | } else if (gdbserver_state.line_buf_index < 1) { | |
4bf43122 | 3094 | /* got a repeat but we have nothing to repeat */ |
5c9522b3 | 3095 | trace_gdbstub_err_invalid_rle(); |
a346af3e | 3096 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
3097 | } else { |
3098 | /* repeat the last character */ | |
a346af3e AB |
3099 | memset(gdbserver_state.line_buf + gdbserver_state.line_buf_index, |
3100 | gdbserver_state.line_buf[gdbserver_state.line_buf_index - 1], repeat); | |
3101 | gdbserver_state.line_buf_index += repeat; | |
3102 | gdbserver_state.line_sum += ch; | |
3103 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 | 3104 | } |
4c3a88a2 FB |
3105 | } |
3106 | break; | |
858693c6 | 3107 | case RS_CHKSUM1: |
4bf43122 DG |
3108 | /* get high hex digit of checksum */ |
3109 | if (!isxdigit(ch)) { | |
33c846ef | 3110 | trace_gdbstub_err_checksum_invalid(ch); |
a346af3e | 3111 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
3112 | break; |
3113 | } | |
a346af3e AB |
3114 | gdbserver_state.line_buf[gdbserver_state.line_buf_index] = '\0'; |
3115 | gdbserver_state.line_csum = fromhex(ch) << 4; | |
3116 | gdbserver_state.state = RS_CHKSUM2; | |
858693c6 FB |
3117 | break; |
3118 | case RS_CHKSUM2: | |
4bf43122 DG |
3119 | /* get low hex digit of checksum */ |
3120 | if (!isxdigit(ch)) { | |
33c846ef | 3121 | trace_gdbstub_err_checksum_invalid(ch); |
a346af3e | 3122 | gdbserver_state.state = RS_GETLINE; |
4bf43122 | 3123 | break; |
858693c6 | 3124 | } |
a346af3e | 3125 | gdbserver_state.line_csum |= fromhex(ch); |
4bf43122 | 3126 | |
a346af3e AB |
3127 | if (gdbserver_state.line_csum != (gdbserver_state.line_sum & 0xff)) { |
3128 | trace_gdbstub_err_checksum_incorrect(gdbserver_state.line_sum, gdbserver_state.line_csum); | |
4bf43122 | 3129 | /* send NAK reply */ |
60fe76f3 | 3130 | reply = '-'; |
a346af3e AB |
3131 | put_buffer(&reply, 1); |
3132 | gdbserver_state.state = RS_IDLE; | |
4c3a88a2 | 3133 | } else { |
4bf43122 | 3134 | /* send ACK reply */ |
60fe76f3 | 3135 | reply = '+'; |
a346af3e AB |
3136 | put_buffer(&reply, 1); |
3137 | gdbserver_state.state = gdb_handle_packet(gdbserver_state.line_buf); | |
4c3a88a2 FB |
3138 | } |
3139 | break; | |
a2d1ebaf PB |
3140 | default: |
3141 | abort(); | |
858693c6 FB |
3142 | } |
3143 | } | |
3144 | } | |
3145 | ||
0e1c9c54 | 3146 | /* Tell the remote gdb that the process has exited. */ |
ad9dcb20 | 3147 | void gdb_exit(int code) |
0e1c9c54 | 3148 | { |
0e1c9c54 PB |
3149 | char buf[4]; |
3150 | ||
8d98c445 | 3151 | if (!gdbserver_state.init) { |
0e1c9c54 PB |
3152 | return; |
3153 | } | |
3154 | #ifdef CONFIG_USER_ONLY | |
fcedd920 AB |
3155 | if (gdbserver_state.socket_path) { |
3156 | unlink(gdbserver_state.socket_path); | |
3157 | } | |
e0a1e208 | 3158 | if (gdbserver_state.fd < 0) { |
0e1c9c54 PB |
3159 | return; |
3160 | } | |
3161 | #endif | |
3162 | ||
5c9522b3 DG |
3163 | trace_gdbstub_op_exiting((uint8_t)code); |
3164 | ||
0e1c9c54 | 3165 | snprintf(buf, sizeof(buf), "W%02x", (uint8_t)code); |
a346af3e | 3166 | put_packet(buf); |
e2af15b2 FC |
3167 | |
3168 | #ifndef CONFIG_USER_ONLY | |
8d98c445 | 3169 | qemu_chr_fe_deinit(&gdbserver_state.chr, true); |
e2af15b2 | 3170 | #endif |
0e1c9c54 PB |
3171 | } |
3172 | ||
8f468636 LM |
3173 | /* |
3174 | * Create the process that will contain all the "orphan" CPUs (that are not | |
3175 | * part of a CPU cluster). Note that if this process contains no CPUs, it won't | |
3176 | * be attachable and thus will be invisible to the user. | |
3177 | */ | |
3178 | static void create_default_process(GDBState *s) | |
3179 | { | |
3180 | GDBProcess *process; | |
3181 | int max_pid = 0; | |
3182 | ||
a346af3e | 3183 | if (gdbserver_state.process_num) { |
8f468636 LM |
3184 | max_pid = s->processes[s->process_num - 1].pid; |
3185 | } | |
3186 | ||
3187 | s->processes = g_renew(GDBProcess, s->processes, ++s->process_num); | |
3188 | process = &s->processes[s->process_num - 1]; | |
3189 | ||
3190 | /* We need an available PID slot for this process */ | |
3191 | assert(max_pid < UINT32_MAX); | |
3192 | ||
3193 | process->pid = max_pid + 1; | |
3194 | process->attached = false; | |
c145eeae | 3195 | process->target_xml[0] = '\0'; |
8f468636 LM |
3196 | } |
3197 | ||
1fddef4b FB |
3198 | #ifdef CONFIG_USER_ONLY |
3199 | int | |
db6b81d4 | 3200 | gdb_handlesig(CPUState *cpu, int sig) |
1fddef4b | 3201 | { |
5ca666c7 AF |
3202 | char buf[256]; |
3203 | int n; | |
1fddef4b | 3204 | |
e0a1e208 | 3205 | if (!gdbserver_state.init || gdbserver_state.fd < 0) { |
5ca666c7 AF |
3206 | return sig; |
3207 | } | |
1fddef4b | 3208 | |
5ca666c7 | 3209 | /* disable single step if it was enabled */ |
3825b28f | 3210 | cpu_single_step(cpu, 0); |
bbd77c18 | 3211 | tb_flush(cpu); |
1fddef4b | 3212 | |
5ca666c7 | 3213 | if (sig != 0) { |
4a82be77 PL |
3214 | gdb_set_stop_cpu(cpu); |
3215 | g_string_printf(gdbserver_state.str_buf, | |
3216 | "T%02xthread:", target_signal_to_gdb(sig)); | |
3217 | gdb_append_thread_id(cpu, gdbserver_state.str_buf); | |
3218 | g_string_append_c(gdbserver_state.str_buf, ';'); | |
3219 | put_strbuf(); | |
5ca666c7 AF |
3220 | } |
3221 | /* put_packet() might have detected that the peer terminated the | |
3222 | connection. */ | |
8d98c445 | 3223 | if (gdbserver_state.fd < 0) { |
5ca666c7 AF |
3224 | return sig; |
3225 | } | |
1fddef4b | 3226 | |
5ca666c7 | 3227 | sig = 0; |
8d98c445 AB |
3228 | gdbserver_state.state = RS_IDLE; |
3229 | gdbserver_state.running_state = 0; | |
3230 | while (gdbserver_state.running_state == 0) { | |
3231 | n = read(gdbserver_state.fd, buf, 256); | |
5ca666c7 AF |
3232 | if (n > 0) { |
3233 | int i; | |
3234 | ||
3235 | for (i = 0; i < n; i++) { | |
a346af3e | 3236 | gdb_read_byte(buf[i]); |
5ca666c7 | 3237 | } |
5819e3e0 | 3238 | } else { |
5ca666c7 AF |
3239 | /* XXX: Connection closed. Should probably wait for another |
3240 | connection before continuing. */ | |
5819e3e0 | 3241 | if (n == 0) { |
8d98c445 | 3242 | close(gdbserver_state.fd); |
5819e3e0 | 3243 | } |
8d98c445 | 3244 | gdbserver_state.fd = -1; |
5ca666c7 | 3245 | return sig; |
1fddef4b | 3246 | } |
5ca666c7 | 3247 | } |
8d98c445 AB |
3248 | sig = gdbserver_state.signal; |
3249 | gdbserver_state.signal = 0; | |
5ca666c7 | 3250 | return sig; |
1fddef4b | 3251 | } |
e9009676 | 3252 | |
ca587a8e | 3253 | /* Tell the remote gdb that the process has exited due to SIG. */ |
9349b4f9 | 3254 | void gdb_signalled(CPUArchState *env, int sig) |
ca587a8e | 3255 | { |
5ca666c7 | 3256 | char buf[4]; |
ca587a8e | 3257 | |
e0a1e208 | 3258 | if (!gdbserver_state.init || gdbserver_state.fd < 0) { |
5ca666c7 AF |
3259 | return; |
3260 | } | |
ca587a8e | 3261 | |
5ca666c7 | 3262 | snprintf(buf, sizeof(buf), "X%02x", target_signal_to_gdb(sig)); |
a346af3e | 3263 | put_packet(buf); |
ca587a8e | 3264 | } |
1fddef4b | 3265 | |
fcedd920 AB |
3266 | static void gdb_accept_init(int fd) |
3267 | { | |
3268 | init_gdbserver_state(); | |
3269 | create_default_process(&gdbserver_state); | |
3270 | gdbserver_state.processes[0].attached = true; | |
3271 | gdbserver_state.c_cpu = gdb_first_attached_cpu(); | |
3272 | gdbserver_state.g_cpu = gdbserver_state.c_cpu; | |
3273 | gdbserver_state.fd = fd; | |
3274 | gdb_has_xml = false; | |
3275 | } | |
3276 | ||
3277 | static bool gdb_accept_socket(int gdb_fd) | |
3278 | { | |
3279 | int fd; | |
3280 | ||
3281 | for(;;) { | |
3282 | fd = accept(gdb_fd, NULL, NULL); | |
3283 | if (fd < 0 && errno != EINTR) { | |
3284 | perror("accept socket"); | |
3285 | return false; | |
3286 | } else if (fd >= 0) { | |
3287 | qemu_set_cloexec(fd); | |
3288 | break; | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | gdb_accept_init(fd); | |
3293 | return true; | |
3294 | } | |
3295 | ||
3296 | static int gdbserver_open_socket(const char *path) | |
3297 | { | |
fdcdf54d | 3298 | struct sockaddr_un sockaddr = {}; |
fcedd920 AB |
3299 | int fd, ret; |
3300 | ||
3301 | fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
3302 | if (fd < 0) { | |
3303 | perror("create socket"); | |
3304 | return -1; | |
3305 | } | |
3306 | ||
3307 | sockaddr.sun_family = AF_UNIX; | |
3308 | pstrcpy(sockaddr.sun_path, sizeof(sockaddr.sun_path) - 1, path); | |
3309 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
3310 | if (ret < 0) { | |
3311 | perror("bind socket"); | |
3312 | close(fd); | |
3313 | return -1; | |
3314 | } | |
3315 | ret = listen(fd, 1); | |
3316 | if (ret < 0) { | |
3317 | perror("listen socket"); | |
3318 | close(fd); | |
3319 | return -1; | |
3320 | } | |
3321 | ||
3322 | return fd; | |
3323 | } | |
3324 | ||
3325 | static bool gdb_accept_tcp(int gdb_fd) | |
858693c6 | 3326 | { |
fdcdf54d | 3327 | struct sockaddr_in sockaddr = {}; |
858693c6 | 3328 | socklen_t len; |
bf1c852a | 3329 | int fd; |
858693c6 FB |
3330 | |
3331 | for(;;) { | |
3332 | len = sizeof(sockaddr); | |
e0a1e208 | 3333 | fd = accept(gdb_fd, (struct sockaddr *)&sockaddr, &len); |
858693c6 FB |
3334 | if (fd < 0 && errno != EINTR) { |
3335 | perror("accept"); | |
2f652224 | 3336 | return false; |
858693c6 | 3337 | } else if (fd >= 0) { |
f5bdd781 | 3338 | qemu_set_cloexec(fd); |
b4608c04 FB |
3339 | break; |
3340 | } | |
3341 | } | |
858693c6 FB |
3342 | |
3343 | /* set short latency */ | |
2f652224 PM |
3344 | if (socket_set_nodelay(fd)) { |
3345 | perror("setsockopt"); | |
ead75d84 | 3346 | close(fd); |
2f652224 PM |
3347 | return false; |
3348 | } | |
3b46e624 | 3349 | |
fcedd920 | 3350 | gdb_accept_init(fd); |
2f652224 | 3351 | return true; |
858693c6 FB |
3352 | } |
3353 | ||
fcedd920 | 3354 | static int gdbserver_open_port(int port) |
858693c6 FB |
3355 | { |
3356 | struct sockaddr_in sockaddr; | |
6669ca13 | 3357 | int fd, ret; |
858693c6 FB |
3358 | |
3359 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
3360 | if (fd < 0) { | |
3361 | perror("socket"); | |
3362 | return -1; | |
3363 | } | |
f5bdd781 | 3364 | qemu_set_cloexec(fd); |
858693c6 | 3365 | |
6669ca13 | 3366 | socket_set_fast_reuse(fd); |
858693c6 FB |
3367 | |
3368 | sockaddr.sin_family = AF_INET; | |
3369 | sockaddr.sin_port = htons(port); | |
3370 | sockaddr.sin_addr.s_addr = 0; | |
3371 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
3372 | if (ret < 0) { | |
3373 | perror("bind"); | |
bb16172c | 3374 | close(fd); |
858693c6 FB |
3375 | return -1; |
3376 | } | |
96165b9e | 3377 | ret = listen(fd, 1); |
858693c6 FB |
3378 | if (ret < 0) { |
3379 | perror("listen"); | |
bb16172c | 3380 | close(fd); |
858693c6 FB |
3381 | return -1; |
3382 | } | |
fcedd920 | 3383 | |
858693c6 FB |
3384 | return fd; |
3385 | } | |
3386 | ||
fcedd920 | 3387 | int gdbserver_start(const char *port_or_path) |
858693c6 | 3388 | { |
fcedd920 AB |
3389 | int port = g_ascii_strtoull(port_or_path, NULL, 10); |
3390 | int gdb_fd; | |
3391 | ||
3392 | if (port > 0) { | |
3393 | gdb_fd = gdbserver_open_port(port); | |
3394 | } else { | |
3395 | gdb_fd = gdbserver_open_socket(port_or_path); | |
3396 | } | |
3397 | ||
e0a1e208 | 3398 | if (gdb_fd < 0) { |
858693c6 | 3399 | return -1; |
e0a1e208 | 3400 | } |
fcedd920 AB |
3401 | |
3402 | if (port > 0 && gdb_accept_tcp(gdb_fd)) { | |
3403 | return 0; | |
3404 | } else if (gdb_accept_socket(gdb_fd)) { | |
3405 | gdbserver_state.socket_path = g_strdup(port_or_path); | |
3406 | return 0; | |
2f652224 | 3407 | } |
fcedd920 AB |
3408 | |
3409 | /* gone wrong */ | |
3410 | close(gdb_fd); | |
3411 | return -1; | |
4046d913 | 3412 | } |
2b1319c8 AJ |
3413 | |
3414 | /* Disable gdb stub for child processes. */ | |
f7ec7f7b | 3415 | void gdbserver_fork(CPUState *cpu) |
2b1319c8 | 3416 | { |
e0a1e208 | 3417 | if (!gdbserver_state.init || gdbserver_state.fd < 0) { |
75a34036 AF |
3418 | return; |
3419 | } | |
8d98c445 AB |
3420 | close(gdbserver_state.fd); |
3421 | gdbserver_state.fd = -1; | |
b3310ab3 | 3422 | cpu_breakpoint_remove_all(cpu, BP_GDB); |
75a34036 | 3423 | cpu_watchpoint_remove_all(cpu, BP_GDB); |
2b1319c8 | 3424 | } |
1fddef4b | 3425 | #else |
aa1f17c1 | 3426 | static int gdb_chr_can_receive(void *opaque) |
4046d913 | 3427 | { |
56aebc89 PB |
3428 | /* We can handle an arbitrarily large amount of data. |
3429 | Pick the maximum packet size, which is as good as anything. */ | |
3430 | return MAX_PACKET_LENGTH; | |
4046d913 PB |
3431 | } |
3432 | ||
aa1f17c1 | 3433 | static void gdb_chr_receive(void *opaque, const uint8_t *buf, int size) |
4046d913 | 3434 | { |
4046d913 PB |
3435 | int i; |
3436 | ||
3437 | for (i = 0; i < size; i++) { | |
a346af3e | 3438 | gdb_read_byte(buf[i]); |
4046d913 PB |
3439 | } |
3440 | } | |
3441 | ||
083b266f | 3442 | static void gdb_chr_event(void *opaque, QEMUChrEvent event) |
4046d913 | 3443 | { |
970ed906 LM |
3444 | int i; |
3445 | GDBState *s = (GDBState *) opaque; | |
3446 | ||
4046d913 | 3447 | switch (event) { |
b6b8df56 | 3448 | case CHR_EVENT_OPENED: |
970ed906 LM |
3449 | /* Start with first process attached, others detached */ |
3450 | for (i = 0; i < s->process_num; i++) { | |
3451 | s->processes[i].attached = !i; | |
3452 | } | |
3453 | ||
a346af3e | 3454 | s->c_cpu = gdb_first_attached_cpu(); |
970ed906 LM |
3455 | s->g_cpu = s->c_cpu; |
3456 | ||
0461d5a6 | 3457 | vm_stop(RUN_STATE_PAUSED); |
56357d80 | 3458 | replay_gdb_attached(); |
5b50e790 | 3459 | gdb_has_xml = false; |
4046d913 PB |
3460 | break; |
3461 | default: | |
3462 | break; | |
3463 | } | |
3464 | } | |
3465 | ||
0ec7b3e7 | 3466 | static int gdb_monitor_write(Chardev *chr, const uint8_t *buf, int len) |
8a34a0fb | 3467 | { |
d86b4672 DH |
3468 | g_autoptr(GString) hex_buf = g_string_new("O"); |
3469 | memtohex(hex_buf, buf, len); | |
3470 | put_packet(hex_buf->str); | |
8a34a0fb AL |
3471 | return len; |
3472 | } | |
3473 | ||
59030a8c AL |
3474 | #ifndef _WIN32 |
3475 | static void gdb_sigterm_handler(int signal) | |
3476 | { | |
1354869c | 3477 | if (runstate_is_running()) { |
0461d5a6 | 3478 | vm_stop(RUN_STATE_PAUSED); |
e07bbac5 | 3479 | } |
59030a8c AL |
3480 | } |
3481 | #endif | |
3482 | ||
777357d7 MAL |
3483 | static void gdb_monitor_open(Chardev *chr, ChardevBackend *backend, |
3484 | bool *be_opened, Error **errp) | |
3485 | { | |
3486 | *be_opened = false; | |
3487 | } | |
3488 | ||
3489 | static void char_gdb_class_init(ObjectClass *oc, void *data) | |
3490 | { | |
3491 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
3492 | ||
3493 | cc->internal = true; | |
3494 | cc->open = gdb_monitor_open; | |
3495 | cc->chr_write = gdb_monitor_write; | |
3496 | } | |
3497 | ||
3498 | #define TYPE_CHARDEV_GDB "chardev-gdb" | |
3499 | ||
3500 | static const TypeInfo char_gdb_type_info = { | |
3501 | .name = TYPE_CHARDEV_GDB, | |
3502 | .parent = TYPE_CHARDEV, | |
3503 | .class_init = char_gdb_class_init, | |
3504 | }; | |
3505 | ||
8f468636 LM |
3506 | static int find_cpu_clusters(Object *child, void *opaque) |
3507 | { | |
3508 | if (object_dynamic_cast(child, TYPE_CPU_CLUSTER)) { | |
3509 | GDBState *s = (GDBState *) opaque; | |
3510 | CPUClusterState *cluster = CPU_CLUSTER(child); | |
3511 | GDBProcess *process; | |
3512 | ||
3513 | s->processes = g_renew(GDBProcess, s->processes, ++s->process_num); | |
3514 | ||
3515 | process = &s->processes[s->process_num - 1]; | |
3516 | ||
3517 | /* | |
3518 | * GDB process IDs -1 and 0 are reserved. To avoid subtle errors at | |
3519 | * runtime, we enforce here that the machine does not use a cluster ID | |
3520 | * that would lead to PID 0. | |
3521 | */ | |
3522 | assert(cluster->cluster_id != UINT32_MAX); | |
3523 | process->pid = cluster->cluster_id + 1; | |
3524 | process->attached = false; | |
c145eeae | 3525 | process->target_xml[0] = '\0'; |
8f468636 LM |
3526 | |
3527 | return 0; | |
3528 | } | |
3529 | ||
3530 | return object_child_foreach(child, find_cpu_clusters, opaque); | |
3531 | } | |
3532 | ||
3533 | static int pid_order(const void *a, const void *b) | |
3534 | { | |
3535 | GDBProcess *pa = (GDBProcess *) a; | |
3536 | GDBProcess *pb = (GDBProcess *) b; | |
3537 | ||
3538 | if (pa->pid < pb->pid) { | |
3539 | return -1; | |
3540 | } else if (pa->pid > pb->pid) { | |
3541 | return 1; | |
3542 | } else { | |
3543 | return 0; | |
3544 | } | |
3545 | } | |
3546 | ||
3547 | static void create_processes(GDBState *s) | |
3548 | { | |
3549 | object_child_foreach(object_get_root(), find_cpu_clusters, s); | |
3550 | ||
a346af3e | 3551 | if (gdbserver_state.processes) { |
8f468636 | 3552 | /* Sort by PID */ |
a346af3e | 3553 | qsort(gdbserver_state.processes, gdbserver_state.process_num, sizeof(gdbserver_state.processes[0]), pid_order); |
8f468636 LM |
3554 | } |
3555 | ||
3556 | create_default_process(s); | |
3557 | } | |
3558 | ||
59030a8c | 3559 | int gdbserver_start(const char *device) |
4046d913 | 3560 | { |
5c9522b3 DG |
3561 | trace_gdbstub_op_start(device); |
3562 | ||
59030a8c | 3563 | char gdbstub_device_name[128]; |
0ec7b3e7 MAL |
3564 | Chardev *chr = NULL; |
3565 | Chardev *mon_chr; | |
cfc3475a | 3566 | |
508b4ecc ZY |
3567 | if (!first_cpu) { |
3568 | error_report("gdbstub: meaningless to attach gdb to a " | |
3569 | "machine without any CPU."); | |
3570 | return -1; | |
12bc5b4c ML |
3571 | } |
3572 | ||
3573 | if (kvm_enabled() && !kvm_supports_guest_debug()) { | |
3574 | error_report("gdbstub: KVM doesn't support guest debugging"); | |
3575 | return -1; | |
508b4ecc ZY |
3576 | } |
3577 | ||
59030a8c AL |
3578 | if (!device) |
3579 | return -1; | |
3580 | if (strcmp(device, "none") != 0) { | |
3581 | if (strstart(device, "tcp:", NULL)) { | |
3582 | /* enforce required TCP attributes */ | |
3583 | snprintf(gdbstub_device_name, sizeof(gdbstub_device_name), | |
a9b1315f | 3584 | "%s,wait=off,nodelay=on,server=on", device); |
59030a8c | 3585 | device = gdbstub_device_name; |
36556b20 | 3586 | } |
59030a8c AL |
3587 | #ifndef _WIN32 |
3588 | else if (strcmp(device, "stdio") == 0) { | |
3589 | struct sigaction act; | |
4046d913 | 3590 | |
59030a8c AL |
3591 | memset(&act, 0, sizeof(act)); |
3592 | act.sa_handler = gdb_sigterm_handler; | |
3593 | sigaction(SIGINT, &act, NULL); | |
3594 | } | |
3595 | #endif | |
95e30b2a MAL |
3596 | /* |
3597 | * FIXME: it's a bit weird to allow using a mux chardev here | |
3598 | * and implicitly setup a monitor. We may want to break this. | |
3599 | */ | |
4ad6f6cb | 3600 | chr = qemu_chr_new_noreplay("gdb", device, true, NULL); |
36556b20 AL |
3601 | if (!chr) |
3602 | return -1; | |
cfc3475a PB |
3603 | } |
3604 | ||
8d98c445 AB |
3605 | if (!gdbserver_state.init) { |
3606 | init_gdbserver_state(); | |
4046d913 | 3607 | |
36556b20 AL |
3608 | qemu_add_vm_change_state_handler(gdb_vm_state_change, NULL); |
3609 | ||
3610 | /* Initialize a monitor terminal for gdb */ | |
777357d7 | 3611 | mon_chr = qemu_chardev_new(NULL, TYPE_CHARDEV_GDB, |
4ad6f6cb | 3612 | NULL, NULL, &error_abort); |
8e9119a8 | 3613 | monitor_init_hmp(mon_chr, false, &error_abort); |
36556b20 | 3614 | } else { |
8d98c445 AB |
3615 | qemu_chr_fe_deinit(&gdbserver_state.chr, true); |
3616 | mon_chr = gdbserver_state.mon_chr; | |
3617 | reset_gdbserver_state(); | |
36556b20 | 3618 | } |
8f468636 | 3619 | |
8d98c445 | 3620 | create_processes(&gdbserver_state); |
8f468636 | 3621 | |
32a6ebec | 3622 | if (chr) { |
8d98c445 AB |
3623 | qemu_chr_fe_init(&gdbserver_state.chr, chr, &error_abort); |
3624 | qemu_chr_fe_set_handlers(&gdbserver_state.chr, gdb_chr_can_receive, | |
3625 | gdb_chr_receive, gdb_chr_event, | |
3626 | NULL, &gdbserver_state, NULL, true); | |
32a6ebec | 3627 | } |
8d98c445 AB |
3628 | gdbserver_state.state = chr ? RS_IDLE : RS_INACTIVE; |
3629 | gdbserver_state.mon_chr = mon_chr; | |
3630 | gdbserver_state.current_syscall_cb = NULL; | |
8a34a0fb | 3631 | |
b4608c04 FB |
3632 | return 0; |
3633 | } | |
777357d7 MAL |
3634 | |
3635 | static void register_types(void) | |
3636 | { | |
3637 | type_register_static(&char_gdb_type_info); | |
3638 | } | |
3639 | ||
3640 | type_init(register_types); | |
4046d913 | 3641 | #endif |