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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" |
856dfd8a | 27 | #include "qemu/ctype.h" |
f348b6d1 | 28 | #include "qemu/cutils.h" |
0b8fa32f | 29 | #include "qemu/module.h" |
842b42df | 30 | #include "trace.h" |
85b4fa0c | 31 | #include "exec/gdbstub.h" |
f348b6d1 | 32 | #ifdef CONFIG_USER_ONLY |
d96bf49b | 33 | #include "gdbstub/user.h" |
1fddef4b | 34 | #else |
8f468636 | 35 | #include "hw/cpu/cluster.h" |
5cc8767d | 36 | #include "hw/boards.h" |
1fddef4b | 37 | #endif |
67b915a5 | 38 | |
b3946626 | 39 | #include "sysemu/hw_accel.h" |
54d31236 | 40 | #include "sysemu/runstate.h" |
6b5fe137 | 41 | #include "semihosting/semihost.h" |
63c91552 | 42 | #include "exec/exec-all.h" |
5b5968c4 | 43 | #include "exec/replay-core.h" |
548c9609 AB |
44 | #include "exec/tb-flush.h" |
45 | #include "exec/hwaddr.h" | |
ca587a8e | 46 | |
ae7467b1 AB |
47 | #include "internals.h" |
48 | ||
ab4752ec JD |
49 | #ifndef CONFIG_USER_ONLY |
50 | static int phy_memory_mode; | |
51 | #endif | |
52 | ||
f3659eee AF |
53 | static inline int target_memory_rw_debug(CPUState *cpu, target_ulong addr, |
54 | uint8_t *buf, int len, bool is_write) | |
44520db1 | 55 | { |
ab4752ec | 56 | CPUClass *cc; |
f3659eee | 57 | |
ab4752ec JD |
58 | #ifndef CONFIG_USER_ONLY |
59 | if (phy_memory_mode) { | |
60 | if (is_write) { | |
61 | cpu_physical_memory_write(addr, buf, len); | |
62 | } else { | |
63 | cpu_physical_memory_read(addr, buf, len); | |
64 | } | |
65 | return 0; | |
66 | } | |
67 | #endif | |
68 | ||
69 | cc = CPU_GET_CLASS(cpu); | |
f3659eee AF |
70 | if (cc->memory_rw_debug) { |
71 | return cc->memory_rw_debug(cpu, addr, buf, len, is_write); | |
72 | } | |
73 | return cpu_memory_rw_debug(cpu, addr, buf, len, is_write); | |
44520db1 | 74 | } |
ca587a8e | 75 | |
56aebc89 PB |
76 | typedef struct GDBRegisterState { |
77 | int base_reg; | |
78 | int num_regs; | |
a010bdbe AB |
79 | gdb_get_reg_cb get_reg; |
80 | gdb_set_reg_cb set_reg; | |
56aebc89 PB |
81 | const char *xml; |
82 | struct GDBRegisterState *next; | |
83 | } GDBRegisterState; | |
84 | ||
b6fa2ec2 | 85 | GDBState gdbserver_state; |
8d98c445 | 86 | |
36e067b2 | 87 | void gdb_init_gdbserver_state(void) |
8d98c445 AB |
88 | { |
89 | g_assert(!gdbserver_state.init); | |
90 | memset(&gdbserver_state, 0, sizeof(GDBState)); | |
91 | gdbserver_state.init = true; | |
308f9e88 | 92 | gdbserver_state.str_buf = g_string_new(NULL); |
4a25f1b9 | 93 | gdbserver_state.mem_buf = g_byte_array_sized_new(MAX_PACKET_LENGTH); |
d116e813 | 94 | gdbserver_state.last_packet = g_byte_array_sized_new(MAX_PACKET_LENGTH + 4); |
ecd39d62 ML |
95 | |
96 | /* | |
3b7a9388 AB |
97 | * What single-step modes are supported is accelerator dependent. |
98 | * By default try to use no IRQs and no timers while single | |
99 | * stepping so as to make single stepping like a typical ICE HW step. | |
ecd39d62 | 100 | */ |
3b7a9388 | 101 | gdbserver_state.supported_sstep_flags = accel_supported_gdbstub_sstep_flags(); |
12bc5b4c ML |
102 | gdbserver_state.sstep_flags = SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER; |
103 | gdbserver_state.sstep_flags &= gdbserver_state.supported_sstep_flags; | |
8d98c445 AB |
104 | } |
105 | ||
5b50e790 | 106 | bool gdb_has_xml; |
56aebc89 | 107 | |
ebf1b4cb PM |
108 | /* |
109 | * Return true if there is a GDB currently connected to the stub | |
110 | * and attached to a CPU | |
111 | */ | |
112 | static bool gdb_attached(void) | |
113 | { | |
114 | return gdbserver_state.init && gdbserver_state.c_cpu; | |
115 | } | |
116 | ||
654efcf3 | 117 | static enum { |
a2d1ebaf PB |
118 | GDB_SYS_UNKNOWN, |
119 | GDB_SYS_ENABLED, | |
120 | GDB_SYS_DISABLED, | |
121 | } gdb_syscall_mode; | |
122 | ||
a38bb079 | 123 | /* Decide if either remote gdb syscalls or native file IO should be used. */ |
a2d1ebaf PB |
124 | int use_gdb_syscalls(void) |
125 | { | |
cfe67cef LA |
126 | SemihostingTarget target = semihosting_get_target(); |
127 | if (target == SEMIHOSTING_TARGET_NATIVE) { | |
a38bb079 LI |
128 | /* -semihosting-config target=native */ |
129 | return false; | |
cfe67cef | 130 | } else if (target == SEMIHOSTING_TARGET_GDB) { |
a38bb079 LI |
131 | /* -semihosting-config target=gdb */ |
132 | return true; | |
133 | } | |
134 | ||
135 | /* -semihosting-config target=auto */ | |
136 | /* On the first call check if gdb is connected and remember. */ | |
a2d1ebaf | 137 | if (gdb_syscall_mode == GDB_SYS_UNKNOWN) { |
ebf1b4cb | 138 | gdb_syscall_mode = gdb_attached() ? GDB_SYS_ENABLED : GDB_SYS_DISABLED; |
a2d1ebaf PB |
139 | } |
140 | return gdb_syscall_mode == GDB_SYS_ENABLED; | |
141 | } | |
142 | ||
ed12f5b4 AB |
143 | static bool stub_can_reverse(void) |
144 | { | |
145 | #ifdef CONFIG_USER_ONLY | |
146 | return false; | |
147 | #else | |
148 | return replay_mode == REPLAY_MODE_PLAY; | |
149 | #endif | |
150 | } | |
151 | ||
9005774b | 152 | /* writes 2*len+1 bytes in buf */ |
36e067b2 | 153 | void gdb_memtohex(GString *buf, const uint8_t *mem, int len) |
b4608c04 FB |
154 | { |
155 | int i, c; | |
b4608c04 FB |
156 | for(i = 0; i < len; i++) { |
157 | c = mem[i]; | |
308f9e88 AB |
158 | g_string_append_c(buf, tohex(c >> 4)); |
159 | g_string_append_c(buf, tohex(c & 0xf)); | |
b4608c04 | 160 | } |
308f9e88 | 161 | g_string_append_c(buf, '\0'); |
b4608c04 FB |
162 | } |
163 | ||
36e067b2 | 164 | void gdb_hextomem(GByteArray *mem, const char *buf, int len) |
b4608c04 FB |
165 | { |
166 | int i; | |
167 | ||
168 | for(i = 0; i < len; i++) { | |
4a25f1b9 AB |
169 | guint8 byte = fromhex(buf[0]) << 4 | fromhex(buf[1]); |
170 | g_byte_array_append(mem, &byte, 1); | |
b4608c04 FB |
171 | buf += 2; |
172 | } | |
173 | } | |
174 | ||
5c9522b3 DG |
175 | static void hexdump(const char *buf, int len, |
176 | void (*trace_fn)(size_t ofs, char const *text)) | |
177 | { | |
178 | char line_buffer[3 * 16 + 4 + 16 + 1]; | |
179 | ||
180 | size_t i; | |
181 | for (i = 0; i < len || (i & 0xF); ++i) { | |
182 | size_t byte_ofs = i & 15; | |
183 | ||
184 | if (byte_ofs == 0) { | |
185 | memset(line_buffer, ' ', 3 * 16 + 4 + 16); | |
186 | line_buffer[3 * 16 + 4 + 16] = 0; | |
187 | } | |
188 | ||
189 | size_t col_group = (i >> 2) & 3; | |
190 | size_t hex_col = byte_ofs * 3 + col_group; | |
191 | size_t txt_col = 3 * 16 + 4 + byte_ofs; | |
192 | ||
193 | if (i < len) { | |
194 | char value = buf[i]; | |
195 | ||
196 | line_buffer[hex_col + 0] = tohex((value >> 4) & 0xF); | |
197 | line_buffer[hex_col + 1] = tohex((value >> 0) & 0xF); | |
198 | line_buffer[txt_col + 0] = (value >= ' ' && value < 127) | |
199 | ? value | |
200 | : '.'; | |
201 | } | |
202 | ||
203 | if (byte_ofs == 0xF) | |
204 | trace_fn(i & -16, line_buffer); | |
205 | } | |
206 | } | |
207 | ||
b4608c04 | 208 | /* return -1 if error, 0 if OK */ |
36e067b2 | 209 | int gdb_put_packet_binary(const char *buf, int len, bool dump) |
b4608c04 | 210 | { |
56aebc89 | 211 | int csum, i; |
d116e813 | 212 | uint8_t footer[3]; |
b4608c04 | 213 | |
5c9522b3 DG |
214 | if (dump && trace_event_get_state_backends(TRACE_GDBSTUB_IO_BINARYREPLY)) { |
215 | hexdump(buf, len, trace_gdbstub_io_binaryreply); | |
216 | } | |
217 | ||
b4608c04 | 218 | for(;;) { |
d116e813 DH |
219 | g_byte_array_set_size(gdbserver_state.last_packet, 0); |
220 | g_byte_array_append(gdbserver_state.last_packet, | |
221 | (const uint8_t *) "$", 1); | |
222 | g_byte_array_append(gdbserver_state.last_packet, | |
223 | (const uint8_t *) buf, len); | |
b4608c04 FB |
224 | csum = 0; |
225 | for(i = 0; i < len; i++) { | |
226 | csum += buf[i]; | |
227 | } | |
d116e813 DH |
228 | footer[0] = '#'; |
229 | footer[1] = tohex((csum >> 4) & 0xf); | |
230 | footer[2] = tohex((csum) & 0xf); | |
231 | g_byte_array_append(gdbserver_state.last_packet, footer, 3); | |
b4608c04 | 232 | |
36e067b2 | 233 | gdb_put_buffer(gdbserver_state.last_packet->data, |
d116e813 | 234 | gdbserver_state.last_packet->len); |
b4608c04 | 235 | |
a7e0f9bd | 236 | if (gdb_got_immediate_ack()) { |
b4608c04 | 237 | break; |
a7e0f9bd | 238 | } |
b4608c04 FB |
239 | } |
240 | return 0; | |
241 | } | |
242 | ||
56aebc89 | 243 | /* return -1 if error, 0 if OK */ |
36e067b2 | 244 | int gdb_put_packet(const char *buf) |
56aebc89 | 245 | { |
5c9522b3 | 246 | trace_gdbstub_io_reply(buf); |
79808573 | 247 | |
36e067b2 | 248 | return gdb_put_packet_binary(buf, strlen(buf), false); |
56aebc89 PB |
249 | } |
250 | ||
36e067b2 | 251 | void gdb_put_strbuf(void) |
308f9e88 | 252 | { |
36e067b2 | 253 | gdb_put_packet(gdbserver_state.str_buf->str); |
308f9e88 AB |
254 | } |
255 | ||
56aebc89 | 256 | /* Encode data using the encoding for 'x' packets. */ |
36e067b2 | 257 | void gdb_memtox(GString *buf, const char *mem, int len) |
56aebc89 | 258 | { |
56aebc89 PB |
259 | char c; |
260 | ||
261 | while (len--) { | |
262 | c = *(mem++); | |
263 | switch (c) { | |
264 | case '#': case '$': case '*': case '}': | |
308f9e88 AB |
265 | g_string_append_c(buf, '}'); |
266 | g_string_append_c(buf, c ^ 0x20); | |
56aebc89 PB |
267 | break; |
268 | default: | |
308f9e88 | 269 | g_string_append_c(buf, c); |
56aebc89 PB |
270 | break; |
271 | } | |
272 | } | |
56aebc89 | 273 | } |
f1ccf904 | 274 | |
a346af3e | 275 | static uint32_t gdb_get_cpu_pid(CPUState *cpu) |
1a227336 | 276 | { |
46f5abc0 PM |
277 | /* TODO: In user mode, we should use the task state PID */ |
278 | if (cpu->cluster_index == UNASSIGNED_CLUSTER_INDEX) { | |
1a227336 | 279 | /* Return the default process' PID */ |
a346af3e AB |
280 | int index = gdbserver_state.process_num - 1; |
281 | return gdbserver_state.processes[index].pid; | |
1a227336 | 282 | } |
46f5abc0 | 283 | return cpu->cluster_index + 1; |
1a227336 LM |
284 | } |
285 | ||
a346af3e | 286 | static GDBProcess *gdb_get_process(uint32_t pid) |
7d8c87da LM |
287 | { |
288 | int i; | |
289 | ||
290 | if (!pid) { | |
291 | /* 0 means any process, we take the first one */ | |
a346af3e | 292 | return &gdbserver_state.processes[0]; |
7d8c87da LM |
293 | } |
294 | ||
a346af3e AB |
295 | for (i = 0; i < gdbserver_state.process_num; i++) { |
296 | if (gdbserver_state.processes[i].pid == pid) { | |
297 | return &gdbserver_state.processes[i]; | |
7d8c87da LM |
298 | } |
299 | } | |
300 | ||
301 | return NULL; | |
302 | } | |
303 | ||
a346af3e | 304 | static GDBProcess *gdb_get_cpu_process(CPUState *cpu) |
7d8c87da | 305 | { |
a346af3e | 306 | return gdb_get_process(gdb_get_cpu_pid(cpu)); |
7d8c87da LM |
307 | } |
308 | ||
309 | static CPUState *find_cpu(uint32_t thread_id) | |
310 | { | |
311 | CPUState *cpu; | |
312 | ||
313 | CPU_FOREACH(cpu) { | |
36e067b2 | 314 | if (gdb_get_cpu_index(cpu) == thread_id) { |
7d8c87da LM |
315 | return cpu; |
316 | } | |
317 | } | |
318 | ||
319 | return NULL; | |
320 | } | |
321 | ||
a346af3e | 322 | static CPUState *get_first_cpu_in_process(GDBProcess *process) |
e40e5204 LM |
323 | { |
324 | CPUState *cpu; | |
325 | ||
326 | CPU_FOREACH(cpu) { | |
a346af3e | 327 | if (gdb_get_cpu_pid(cpu) == process->pid) { |
e40e5204 LM |
328 | return cpu; |
329 | } | |
330 | } | |
331 | ||
332 | return NULL; | |
333 | } | |
334 | ||
a346af3e | 335 | static CPUState *gdb_next_cpu_in_process(CPUState *cpu) |
e40e5204 | 336 | { |
a346af3e | 337 | uint32_t pid = gdb_get_cpu_pid(cpu); |
e40e5204 LM |
338 | cpu = CPU_NEXT(cpu); |
339 | ||
340 | while (cpu) { | |
a346af3e | 341 | if (gdb_get_cpu_pid(cpu) == pid) { |
e40e5204 LM |
342 | break; |
343 | } | |
344 | ||
345 | cpu = CPU_NEXT(cpu); | |
346 | } | |
347 | ||
348 | return cpu; | |
349 | } | |
350 | ||
e40e5204 | 351 | /* Return the cpu following @cpu, while ignoring unattached processes. */ |
a346af3e | 352 | static CPUState *gdb_next_attached_cpu(CPUState *cpu) |
e40e5204 LM |
353 | { |
354 | cpu = CPU_NEXT(cpu); | |
355 | ||
356 | while (cpu) { | |
a346af3e | 357 | if (gdb_get_cpu_process(cpu)->attached) { |
e40e5204 LM |
358 | break; |
359 | } | |
360 | ||
361 | cpu = CPU_NEXT(cpu); | |
362 | } | |
363 | ||
364 | return cpu; | |
365 | } | |
366 | ||
367 | /* Return the first attached cpu */ | |
36e067b2 | 368 | CPUState *gdb_first_attached_cpu(void) |
e40e5204 LM |
369 | { |
370 | CPUState *cpu = first_cpu; | |
a346af3e | 371 | GDBProcess *process = gdb_get_cpu_process(cpu); |
e40e5204 LM |
372 | |
373 | if (!process->attached) { | |
a346af3e | 374 | return gdb_next_attached_cpu(cpu); |
e40e5204 LM |
375 | } |
376 | ||
377 | return cpu; | |
378 | } | |
379 | ||
a346af3e | 380 | static CPUState *gdb_get_cpu(uint32_t pid, uint32_t tid) |
ab65eed3 LM |
381 | { |
382 | GDBProcess *process; | |
383 | CPUState *cpu; | |
384 | ||
385 | if (!pid && !tid) { | |
386 | /* 0 means any process/thread, we take the first attached one */ | |
a346af3e | 387 | return gdb_first_attached_cpu(); |
ab65eed3 LM |
388 | } else if (pid && !tid) { |
389 | /* any thread in a specific process */ | |
a346af3e | 390 | process = gdb_get_process(pid); |
ab65eed3 LM |
391 | |
392 | if (process == NULL) { | |
393 | return NULL; | |
394 | } | |
395 | ||
396 | if (!process->attached) { | |
397 | return NULL; | |
398 | } | |
399 | ||
a346af3e | 400 | return get_first_cpu_in_process(process); |
ab65eed3 LM |
401 | } else { |
402 | /* a specific thread */ | |
403 | cpu = find_cpu(tid); | |
404 | ||
405 | if (cpu == NULL) { | |
406 | return NULL; | |
407 | } | |
408 | ||
a346af3e | 409 | process = gdb_get_cpu_process(cpu); |
ab65eed3 LM |
410 | |
411 | if (pid && process->pid != pid) { | |
412 | return NULL; | |
413 | } | |
414 | ||
415 | if (!process->attached) { | |
416 | return NULL; | |
417 | } | |
418 | ||
419 | return cpu; | |
420 | } | |
421 | } | |
422 | ||
a346af3e AB |
423 | static const char *get_feature_xml(const char *p, const char **newp, |
424 | GDBProcess *process) | |
56aebc89 | 425 | { |
56aebc89 PB |
426 | size_t len; |
427 | int i; | |
428 | const char *name; | |
a346af3e | 429 | CPUState *cpu = get_first_cpu_in_process(process); |
c145eeae | 430 | CPUClass *cc = CPU_GET_CLASS(cpu); |
56aebc89 PB |
431 | |
432 | len = 0; | |
433 | while (p[len] && p[len] != ':') | |
434 | len++; | |
435 | *newp = p + len; | |
436 | ||
437 | name = NULL; | |
438 | if (strncmp(p, "target.xml", len) == 0) { | |
c145eeae LM |
439 | char *buf = process->target_xml; |
440 | const size_t buf_sz = sizeof(process->target_xml); | |
441 | ||
56aebc89 | 442 | /* Generate the XML description for this CPU. */ |
c145eeae | 443 | if (!buf[0]) { |
56aebc89 PB |
444 | GDBRegisterState *r; |
445 | ||
c145eeae | 446 | pstrcat(buf, buf_sz, |
b3820e6c DH |
447 | "<?xml version=\"1.0\"?>" |
448 | "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" | |
449 | "<target>"); | |
450 | if (cc->gdb_arch_name) { | |
451 | gchar *arch = cc->gdb_arch_name(cpu); | |
c145eeae LM |
452 | pstrcat(buf, buf_sz, "<architecture>"); |
453 | pstrcat(buf, buf_sz, arch); | |
454 | pstrcat(buf, buf_sz, "</architecture>"); | |
b3820e6c DH |
455 | g_free(arch); |
456 | } | |
c145eeae LM |
457 | pstrcat(buf, buf_sz, "<xi:include href=\""); |
458 | pstrcat(buf, buf_sz, cc->gdb_core_xml_file); | |
459 | pstrcat(buf, buf_sz, "\"/>"); | |
eac8b355 | 460 | for (r = cpu->gdb_regs; r; r = r->next) { |
c145eeae LM |
461 | pstrcat(buf, buf_sz, "<xi:include href=\""); |
462 | pstrcat(buf, buf_sz, r->xml); | |
463 | pstrcat(buf, buf_sz, "\"/>"); | |
56aebc89 | 464 | } |
c145eeae | 465 | pstrcat(buf, buf_sz, "</target>"); |
56aebc89 | 466 | } |
c145eeae | 467 | return buf; |
56aebc89 | 468 | } |
200bf5b7 | 469 | if (cc->gdb_get_dynamic_xml) { |
200bf5b7 AB |
470 | char *xmlname = g_strndup(p, len); |
471 | const char *xml = cc->gdb_get_dynamic_xml(cpu, xmlname); | |
472 | ||
473 | g_free(xmlname); | |
474 | if (xml) { | |
475 | return xml; | |
476 | } | |
477 | } | |
56aebc89 PB |
478 | for (i = 0; ; i++) { |
479 | name = xml_builtin[i][0]; | |
480 | if (!name || (strncmp(name, p, len) == 0 && strlen(name) == len)) | |
481 | break; | |
482 | } | |
483 | return name ? xml_builtin[i][1] : NULL; | |
484 | } | |
f1ccf904 | 485 | |
a010bdbe | 486 | static int gdb_read_register(CPUState *cpu, GByteArray *buf, int reg) |
56aebc89 | 487 | { |
a0e372f0 | 488 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 489 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 490 | GDBRegisterState *r; |
f1ccf904 | 491 | |
a0e372f0 | 492 | if (reg < cc->gdb_num_core_regs) { |
a010bdbe | 493 | return cc->gdb_read_register(cpu, buf, reg); |
a0e372f0 | 494 | } |
f1ccf904 | 495 | |
eac8b355 | 496 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 | 497 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
a010bdbe | 498 | return r->get_reg(env, buf, reg - r->base_reg); |
56aebc89 PB |
499 | } |
500 | } | |
501 | return 0; | |
f1ccf904 TS |
502 | } |
503 | ||
385b9f0e | 504 | static int gdb_write_register(CPUState *cpu, uint8_t *mem_buf, int reg) |
f1ccf904 | 505 | { |
a0e372f0 | 506 | CPUClass *cc = CPU_GET_CLASS(cpu); |
385b9f0e | 507 | CPUArchState *env = cpu->env_ptr; |
56aebc89 | 508 | GDBRegisterState *r; |
f1ccf904 | 509 | |
a0e372f0 | 510 | if (reg < cc->gdb_num_core_regs) { |
5b50e790 | 511 | return cc->gdb_write_register(cpu, mem_buf, reg); |
a0e372f0 | 512 | } |
56aebc89 | 513 | |
eac8b355 | 514 | for (r = cpu->gdb_regs; r; r = r->next) { |
56aebc89 PB |
515 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { |
516 | return r->set_reg(env, mem_buf, reg - r->base_reg); | |
517 | } | |
518 | } | |
6da41eaf FB |
519 | return 0; |
520 | } | |
521 | ||
56aebc89 PB |
522 | /* Register a supplemental set of CPU registers. If g_pos is nonzero it |
523 | specifies the first register number and these registers are included in | |
524 | a standard "g" packet. Direction is relative to gdb, i.e. get_reg is | |
525 | gdb reading a CPU register, and set_reg is gdb modifying a CPU register. | |
526 | */ | |
527 | ||
22169d41 | 528 | void gdb_register_coprocessor(CPUState *cpu, |
a010bdbe | 529 | gdb_get_reg_cb get_reg, gdb_set_reg_cb set_reg, |
22169d41 | 530 | int num_regs, const char *xml, int g_pos) |
6da41eaf | 531 | { |
56aebc89 PB |
532 | GDBRegisterState *s; |
533 | GDBRegisterState **p; | |
56aebc89 | 534 | |
eac8b355 | 535 | p = &cpu->gdb_regs; |
56aebc89 PB |
536 | while (*p) { |
537 | /* Check for duplicates. */ | |
538 | if (strcmp((*p)->xml, xml) == 0) | |
539 | return; | |
540 | p = &(*p)->next; | |
541 | } | |
9643c25f SW |
542 | |
543 | s = g_new0(GDBRegisterState, 1); | |
a0e372f0 | 544 | s->base_reg = cpu->gdb_num_regs; |
9643c25f SW |
545 | s->num_regs = num_regs; |
546 | s->get_reg = get_reg; | |
547 | s->set_reg = set_reg; | |
548 | s->xml = xml; | |
549 | ||
56aebc89 | 550 | /* Add to end of list. */ |
a0e372f0 | 551 | cpu->gdb_num_regs += num_regs; |
56aebc89 PB |
552 | *p = s; |
553 | if (g_pos) { | |
554 | if (g_pos != s->base_reg) { | |
7ae6c571 ZY |
555 | error_report("Error: Bad gdb register numbering for '%s', " |
556 | "expected %d got %d", xml, g_pos, s->base_reg); | |
35143f01 AF |
557 | } else { |
558 | cpu->gdb_num_g_regs = cpu->gdb_num_regs; | |
56aebc89 PB |
559 | } |
560 | } | |
6da41eaf FB |
561 | } |
562 | ||
a346af3e | 563 | static void gdb_process_breakpoint_remove_all(GDBProcess *p) |
546f3c67 | 564 | { |
a346af3e | 565 | CPUState *cpu = get_first_cpu_in_process(p); |
546f3c67 LM |
566 | |
567 | while (cpu) { | |
ae7467b1 | 568 | gdb_breakpoint_remove_all(cpu); |
a346af3e | 569 | cpu = gdb_next_cpu_in_process(cpu); |
546f3c67 LM |
570 | } |
571 | } | |
572 | ||
a1d1bb31 | 573 | |
a346af3e | 574 | static void gdb_set_cpu_pc(target_ulong pc) |
fab9d284 | 575 | { |
a346af3e | 576 | CPUState *cpu = gdbserver_state.c_cpu; |
f45748f1 AF |
577 | |
578 | cpu_synchronize_state(cpu); | |
4a2b24ed | 579 | cpu_set_pc(cpu, pc); |
fab9d284 AJ |
580 | } |
581 | ||
36e067b2 | 582 | void gdb_append_thread_id(CPUState *cpu, GString *buf) |
1a227336 | 583 | { |
a346af3e | 584 | if (gdbserver_state.multiprocess) { |
308f9e88 | 585 | g_string_append_printf(buf, "p%02x.%02x", |
36e067b2 | 586 | gdb_get_cpu_pid(cpu), gdb_get_cpu_index(cpu)); |
1a227336 | 587 | } else { |
36e067b2 | 588 | g_string_append_printf(buf, "%02x", gdb_get_cpu_index(cpu)); |
1a227336 | 589 | } |
1a227336 LM |
590 | } |
591 | ||
7d8c87da LM |
592 | static GDBThreadIdKind read_thread_id(const char *buf, const char **end_buf, |
593 | uint32_t *pid, uint32_t *tid) | |
594 | { | |
595 | unsigned long p, t; | |
596 | int ret; | |
597 | ||
598 | if (*buf == 'p') { | |
599 | buf++; | |
600 | ret = qemu_strtoul(buf, &buf, 16, &p); | |
601 | ||
602 | if (ret) { | |
603 | return GDB_READ_THREAD_ERR; | |
604 | } | |
605 | ||
606 | /* Skip '.' */ | |
607 | buf++; | |
608 | } else { | |
609 | p = 1; | |
610 | } | |
611 | ||
612 | ret = qemu_strtoul(buf, &buf, 16, &t); | |
613 | ||
614 | if (ret) { | |
615 | return GDB_READ_THREAD_ERR; | |
616 | } | |
617 | ||
618 | *end_buf = buf; | |
619 | ||
620 | if (p == -1) { | |
621 | return GDB_ALL_PROCESSES; | |
622 | } | |
623 | ||
624 | if (pid) { | |
625 | *pid = p; | |
626 | } | |
627 | ||
628 | if (t == -1) { | |
629 | return GDB_ALL_THREADS; | |
630 | } | |
631 | ||
632 | if (tid) { | |
633 | *tid = t; | |
634 | } | |
635 | ||
636 | return GDB_ONE_THREAD; | |
637 | } | |
638 | ||
544177ad CI |
639 | /** |
640 | * gdb_handle_vcont - Parses and handles a vCont packet. | |
641 | * returns -ENOTSUP if a command is unsupported, -EINVAL or -ERANGE if there is | |
642 | * a format error, 0 on success. | |
643 | */ | |
a346af3e | 644 | static int gdb_handle_vcont(const char *p) |
544177ad | 645 | { |
e40e5204 | 646 | int res, signal = 0; |
544177ad CI |
647 | char cur_action; |
648 | char *newstates; | |
649 | unsigned long tmp; | |
e40e5204 LM |
650 | uint32_t pid, tid; |
651 | GDBProcess *process; | |
544177ad | 652 | CPUState *cpu; |
c99ef792 | 653 | GDBThreadIdKind kind; |
544177ad CI |
654 | #ifdef CONFIG_USER_ONLY |
655 | int max_cpus = 1; /* global variable max_cpus exists only in system mode */ | |
656 | ||
657 | CPU_FOREACH(cpu) { | |
658 | max_cpus = max_cpus <= cpu->cpu_index ? cpu->cpu_index + 1 : max_cpus; | |
659 | } | |
5cc8767d LX |
660 | #else |
661 | MachineState *ms = MACHINE(qdev_get_machine()); | |
662 | unsigned int max_cpus = ms->smp.max_cpus; | |
544177ad CI |
663 | #endif |
664 | /* uninitialised CPUs stay 0 */ | |
665 | newstates = g_new0(char, max_cpus); | |
666 | ||
667 | /* mark valid CPUs with 1 */ | |
668 | CPU_FOREACH(cpu) { | |
669 | newstates[cpu->cpu_index] = 1; | |
670 | } | |
671 | ||
672 | /* | |
673 | * res keeps track of what error we are returning, with -ENOTSUP meaning | |
674 | * that the command is unknown or unsupported, thus returning an empty | |
675 | * packet, while -EINVAL and -ERANGE cause an E22 packet, due to invalid, | |
676 | * or incorrect parameters passed. | |
677 | */ | |
678 | res = 0; | |
679 | while (*p) { | |
680 | if (*p++ != ';') { | |
681 | res = -ENOTSUP; | |
682 | goto out; | |
683 | } | |
684 | ||
685 | cur_action = *p++; | |
686 | if (cur_action == 'C' || cur_action == 'S') { | |
95a5befc | 687 | cur_action = qemu_tolower(cur_action); |
3ddd9036 | 688 | res = qemu_strtoul(p, &p, 16, &tmp); |
544177ad CI |
689 | if (res) { |
690 | goto out; | |
691 | } | |
692 | signal = gdb_signal_to_target(tmp); | |
693 | } else if (cur_action != 'c' && cur_action != 's') { | |
694 | /* unknown/invalid/unsupported command */ | |
695 | res = -ENOTSUP; | |
696 | goto out; | |
697 | } | |
e40e5204 | 698 | |
c99ef792 LM |
699 | if (*p == '\0' || *p == ';') { |
700 | /* | |
701 | * No thread specifier, action is on "all threads". The | |
702 | * specification is unclear regarding the process to act on. We | |
703 | * choose all processes. | |
704 | */ | |
705 | kind = GDB_ALL_PROCESSES; | |
706 | } else if (*p++ == ':') { | |
707 | kind = read_thread_id(p, &p, &pid, &tid); | |
708 | } else { | |
e40e5204 LM |
709 | res = -ENOTSUP; |
710 | goto out; | |
711 | } | |
712 | ||
c99ef792 | 713 | switch (kind) { |
e40e5204 LM |
714 | case GDB_READ_THREAD_ERR: |
715 | res = -EINVAL; | |
716 | goto out; | |
717 | ||
718 | case GDB_ALL_PROCESSES: | |
a346af3e | 719 | cpu = gdb_first_attached_cpu(); |
e40e5204 LM |
720 | while (cpu) { |
721 | if (newstates[cpu->cpu_index] == 1) { | |
722 | newstates[cpu->cpu_index] = cur_action; | |
544177ad | 723 | } |
e40e5204 | 724 | |
a346af3e | 725 | cpu = gdb_next_attached_cpu(cpu); |
544177ad | 726 | } |
e40e5204 LM |
727 | break; |
728 | ||
729 | case GDB_ALL_THREADS: | |
a346af3e | 730 | process = gdb_get_process(pid); |
e40e5204 LM |
731 | |
732 | if (!process->attached) { | |
733 | res = -EINVAL; | |
544177ad CI |
734 | goto out; |
735 | } | |
5a6a1ad1 | 736 | |
a346af3e | 737 | cpu = get_first_cpu_in_process(process); |
e40e5204 LM |
738 | while (cpu) { |
739 | if (newstates[cpu->cpu_index] == 1) { | |
740 | newstates[cpu->cpu_index] = cur_action; | |
741 | } | |
742 | ||
a346af3e | 743 | cpu = gdb_next_cpu_in_process(cpu); |
e40e5204 LM |
744 | } |
745 | break; | |
746 | ||
747 | case GDB_ONE_THREAD: | |
a346af3e | 748 | cpu = gdb_get_cpu(pid, tid); |
544177ad | 749 | |
544177ad | 750 | /* invalid CPU/thread specified */ |
5a6a1ad1 | 751 | if (!cpu) { |
544177ad CI |
752 | res = -EINVAL; |
753 | goto out; | |
754 | } | |
5a6a1ad1 | 755 | |
544177ad CI |
756 | /* only use if no previous match occourred */ |
757 | if (newstates[cpu->cpu_index] == 1) { | |
758 | newstates[cpu->cpu_index] = cur_action; | |
759 | } | |
e40e5204 | 760 | break; |
544177ad CI |
761 | } |
762 | } | |
a346af3e AB |
763 | gdbserver_state.signal = signal; |
764 | gdb_continue_partial(newstates); | |
544177ad CI |
765 | |
766 | out: | |
767 | g_free(newstates); | |
768 | ||
769 | return res; | |
770 | } | |
771 | ||
d14055dc JD |
772 | static const char *cmd_next_param(const char *param, const char delimiter) |
773 | { | |
774 | static const char all_delimiters[] = ",;:="; | |
775 | char curr_delimiters[2] = {0}; | |
776 | const char *delimiters; | |
777 | ||
778 | if (delimiter == '?') { | |
779 | delimiters = all_delimiters; | |
780 | } else if (delimiter == '0') { | |
781 | return strchr(param, '\0'); | |
782 | } else if (delimiter == '.' && *param) { | |
783 | return param + 1; | |
784 | } else { | |
785 | curr_delimiters[0] = delimiter; | |
786 | delimiters = curr_delimiters; | |
787 | } | |
788 | ||
789 | param += strcspn(param, delimiters); | |
790 | if (*param) { | |
791 | param++; | |
792 | } | |
793 | return param; | |
794 | } | |
795 | ||
796 | static int cmd_parse_params(const char *data, const char *schema, | |
26a16181 | 797 | GArray *params) |
d14055dc | 798 | { |
d14055dc JD |
799 | const char *curr_schema, *curr_data; |
800 | ||
26a16181 AB |
801 | g_assert(schema); |
802 | g_assert(params->len == 0); | |
d14055dc JD |
803 | |
804 | curr_schema = schema; | |
d14055dc JD |
805 | curr_data = data; |
806 | while (curr_schema[0] && curr_schema[1] && *curr_data) { | |
26a16181 AB |
807 | GdbCmdVariant this_param; |
808 | ||
d14055dc JD |
809 | switch (curr_schema[0]) { |
810 | case 'l': | |
811 | if (qemu_strtoul(curr_data, &curr_data, 16, | |
26a16181 | 812 | &this_param.val_ul)) { |
d14055dc JD |
813 | return -EINVAL; |
814 | } | |
d14055dc | 815 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 816 | g_array_append_val(params, this_param); |
d14055dc JD |
817 | break; |
818 | case 'L': | |
819 | if (qemu_strtou64(curr_data, &curr_data, 16, | |
26a16181 | 820 | (uint64_t *)&this_param.val_ull)) { |
d14055dc JD |
821 | return -EINVAL; |
822 | } | |
d14055dc | 823 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 824 | g_array_append_val(params, this_param); |
d14055dc JD |
825 | break; |
826 | case 's': | |
26a16181 | 827 | this_param.data = curr_data; |
d14055dc | 828 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 829 | g_array_append_val(params, this_param); |
d14055dc JD |
830 | break; |
831 | case 'o': | |
26a16181 | 832 | this_param.opcode = *(uint8_t *)curr_data; |
d14055dc | 833 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 834 | g_array_append_val(params, this_param); |
d14055dc JD |
835 | break; |
836 | case 't': | |
26a16181 | 837 | this_param.thread_id.kind = |
d14055dc | 838 | read_thread_id(curr_data, &curr_data, |
26a16181 AB |
839 | &this_param.thread_id.pid, |
840 | &this_param.thread_id.tid); | |
d14055dc | 841 | curr_data = cmd_next_param(curr_data, curr_schema[1]); |
26a16181 | 842 | g_array_append_val(params, this_param); |
d14055dc JD |
843 | break; |
844 | case '?': | |
845 | curr_data = cmd_next_param(curr_data, curr_schema[1]); | |
846 | break; | |
847 | default: | |
848 | return -EINVAL; | |
849 | } | |
850 | curr_schema += 2; | |
851 | } | |
852 | ||
d14055dc JD |
853 | return 0; |
854 | } | |
855 | ||
26a16181 | 856 | typedef void (*GdbCmdHandler)(GArray *params, void *user_ctx); |
d14055dc JD |
857 | |
858 | /* | |
859 | * cmd_startswith -> cmd is compared using startswith | |
860 | * | |
861 | * | |
862 | * schema definitions: | |
863 | * Each schema parameter entry consists of 2 chars, | |
864 | * the first char represents the parameter type handling | |
865 | * the second char represents the delimiter for the next parameter | |
866 | * | |
867 | * Currently supported schema types: | |
868 | * 'l' -> unsigned long (stored in .val_ul) | |
869 | * 'L' -> unsigned long long (stored in .val_ull) | |
870 | * 's' -> string (stored in .data) | |
871 | * 'o' -> single char (stored in .opcode) | |
872 | * 't' -> thread id (stored in .thread_id) | |
873 | * '?' -> skip according to delimiter | |
874 | * | |
875 | * Currently supported delimiters: | |
876 | * '?' -> Stop at any delimiter (",;:=\0") | |
877 | * '0' -> Stop at "\0" | |
878 | * '.' -> Skip 1 char unless reached "\0" | |
879 | * Any other value is treated as the delimiter value itself | |
880 | */ | |
881 | typedef struct GdbCmdParseEntry { | |
882 | GdbCmdHandler handler; | |
883 | const char *cmd; | |
884 | bool cmd_startswith; | |
885 | const char *schema; | |
886 | } GdbCmdParseEntry; | |
887 | ||
888 | static inline int startswith(const char *string, const char *pattern) | |
889 | { | |
890 | return !strncmp(string, pattern, strlen(pattern)); | |
891 | } | |
892 | ||
a346af3e | 893 | static int process_string_cmd(void *user_ctx, const char *data, |
d14055dc JD |
894 | const GdbCmdParseEntry *cmds, int num_cmds) |
895 | { | |
26a16181 AB |
896 | int i; |
897 | g_autoptr(GArray) params = g_array_new(false, true, sizeof(GdbCmdVariant)); | |
d14055dc JD |
898 | |
899 | if (!cmds) { | |
900 | return -1; | |
901 | } | |
902 | ||
903 | for (i = 0; i < num_cmds; i++) { | |
904 | const GdbCmdParseEntry *cmd = &cmds[i]; | |
905 | g_assert(cmd->handler && cmd->cmd); | |
906 | ||
907 | if ((cmd->cmd_startswith && !startswith(data, cmd->cmd)) || | |
908 | (!cmd->cmd_startswith && strcmp(cmd->cmd, data))) { | |
909 | continue; | |
910 | } | |
911 | ||
912 | if (cmd->schema) { | |
26a16181 AB |
913 | if (cmd_parse_params(&data[strlen(cmd->cmd)], |
914 | cmd->schema, params)) { | |
915 | return -1; | |
d14055dc | 916 | } |
d14055dc JD |
917 | } |
918 | ||
26a16181 | 919 | cmd->handler(params, user_ctx); |
d14055dc JD |
920 | return 0; |
921 | } | |
922 | ||
923 | return -1; | |
924 | } | |
925 | ||
a346af3e | 926 | static void run_cmd_parser(const char *data, const GdbCmdParseEntry *cmd) |
3e2c1261 JD |
927 | { |
928 | if (!data) { | |
929 | return; | |
930 | } | |
931 | ||
308f9e88 | 932 | g_string_set_size(gdbserver_state.str_buf, 0); |
4a25f1b9 | 933 | g_byte_array_set_size(gdbserver_state.mem_buf, 0); |
308f9e88 | 934 | |
3e2c1261 JD |
935 | /* In case there was an error during the command parsing we must |
936 | * send a NULL packet to indicate the command is not supported */ | |
a346af3e | 937 | if (process_string_cmd(NULL, data, cmd, 1)) { |
36e067b2 | 938 | gdb_put_packet(""); |
3e2c1261 JD |
939 | } |
940 | } | |
941 | ||
26a16181 | 942 | static void handle_detach(GArray *params, void *user_ctx) |
3e2c1261 JD |
943 | { |
944 | GDBProcess *process; | |
3e2c1261 JD |
945 | uint32_t pid = 1; |
946 | ||
a346af3e | 947 | if (gdbserver_state.multiprocess) { |
26a16181 | 948 | if (!params->len) { |
36e067b2 | 949 | gdb_put_packet("E22"); |
3e2c1261 JD |
950 | return; |
951 | } | |
952 | ||
26a16181 | 953 | pid = get_param(params, 0)->val_ul; |
3e2c1261 JD |
954 | } |
955 | ||
a346af3e AB |
956 | process = gdb_get_process(pid); |
957 | gdb_process_breakpoint_remove_all(process); | |
3e2c1261 JD |
958 | process->attached = false; |
959 | ||
a346af3e AB |
960 | if (pid == gdb_get_cpu_pid(gdbserver_state.c_cpu)) { |
961 | gdbserver_state.c_cpu = gdb_first_attached_cpu(); | |
3e2c1261 JD |
962 | } |
963 | ||
a346af3e AB |
964 | if (pid == gdb_get_cpu_pid(gdbserver_state.g_cpu)) { |
965 | gdbserver_state.g_cpu = gdb_first_attached_cpu(); | |
3e2c1261 JD |
966 | } |
967 | ||
a346af3e | 968 | if (!gdbserver_state.c_cpu) { |
3e2c1261 JD |
969 | /* No more process attached */ |
970 | gdb_syscall_mode = GDB_SYS_DISABLED; | |
a346af3e | 971 | gdb_continue(); |
3e2c1261 | 972 | } |
36e067b2 | 973 | gdb_put_packet("OK"); |
3e2c1261 JD |
974 | } |
975 | ||
26a16181 | 976 | static void handle_thread_alive(GArray *params, void *user_ctx) |
44ffded0 JD |
977 | { |
978 | CPUState *cpu; | |
979 | ||
26a16181 | 980 | if (!params->len) { |
36e067b2 | 981 | gdb_put_packet("E22"); |
44ffded0 JD |
982 | return; |
983 | } | |
984 | ||
26a16181 | 985 | if (get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) { |
36e067b2 | 986 | gdb_put_packet("E22"); |
44ffded0 JD |
987 | return; |
988 | } | |
989 | ||
26a16181 AB |
990 | cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid, |
991 | get_param(params, 0)->thread_id.tid); | |
44ffded0 | 992 | if (!cpu) { |
36e067b2 | 993 | gdb_put_packet("E22"); |
44ffded0 JD |
994 | return; |
995 | } | |
996 | ||
36e067b2 | 997 | gdb_put_packet("OK"); |
44ffded0 JD |
998 | } |
999 | ||
26a16181 | 1000 | static void handle_continue(GArray *params, void *user_ctx) |
4d6e3fe2 | 1001 | { |
26a16181 AB |
1002 | if (params->len) { |
1003 | gdb_set_cpu_pc(get_param(params, 0)->val_ull); | |
4d6e3fe2 JD |
1004 | } |
1005 | ||
a346af3e AB |
1006 | gdbserver_state.signal = 0; |
1007 | gdb_continue(); | |
4d6e3fe2 JD |
1008 | } |
1009 | ||
26a16181 | 1010 | static void handle_cont_with_sig(GArray *params, void *user_ctx) |
ccc47d5d JD |
1011 | { |
1012 | unsigned long signal = 0; | |
1013 | ||
1014 | /* | |
1015 | * Note: C sig;[addr] is currently unsupported and we simply | |
1016 | * omit the addr parameter | |
1017 | */ | |
26a16181 AB |
1018 | if (params->len) { |
1019 | signal = get_param(params, 0)->val_ul; | |
ccc47d5d JD |
1020 | } |
1021 | ||
a346af3e AB |
1022 | gdbserver_state.signal = gdb_signal_to_target(signal); |
1023 | if (gdbserver_state.signal == -1) { | |
1024 | gdbserver_state.signal = 0; | |
ccc47d5d | 1025 | } |
a346af3e | 1026 | gdb_continue(); |
ccc47d5d JD |
1027 | } |
1028 | ||
26a16181 | 1029 | static void handle_set_thread(GArray *params, void *user_ctx) |
3a9651d6 JD |
1030 | { |
1031 | CPUState *cpu; | |
1032 | ||
26a16181 | 1033 | if (params->len != 2) { |
36e067b2 | 1034 | gdb_put_packet("E22"); |
3a9651d6 JD |
1035 | return; |
1036 | } | |
1037 | ||
26a16181 | 1038 | if (get_param(params, 1)->thread_id.kind == GDB_READ_THREAD_ERR) { |
36e067b2 | 1039 | gdb_put_packet("E22"); |
3a9651d6 JD |
1040 | return; |
1041 | } | |
1042 | ||
26a16181 | 1043 | if (get_param(params, 1)->thread_id.kind != GDB_ONE_THREAD) { |
36e067b2 | 1044 | gdb_put_packet("OK"); |
3a9651d6 JD |
1045 | return; |
1046 | } | |
1047 | ||
26a16181 AB |
1048 | cpu = gdb_get_cpu(get_param(params, 1)->thread_id.pid, |
1049 | get_param(params, 1)->thread_id.tid); | |
3a9651d6 | 1050 | if (!cpu) { |
36e067b2 | 1051 | gdb_put_packet("E22"); |
3a9651d6 JD |
1052 | return; |
1053 | } | |
1054 | ||
1055 | /* | |
1056 | * Note: This command is deprecated and modern gdb's will be using the | |
1057 | * vCont command instead. | |
1058 | */ | |
26a16181 | 1059 | switch (get_param(params, 0)->opcode) { |
3a9651d6 | 1060 | case 'c': |
a346af3e | 1061 | gdbserver_state.c_cpu = cpu; |
36e067b2 | 1062 | gdb_put_packet("OK"); |
3a9651d6 JD |
1063 | break; |
1064 | case 'g': | |
a346af3e | 1065 | gdbserver_state.g_cpu = cpu; |
36e067b2 | 1066 | gdb_put_packet("OK"); |
3a9651d6 JD |
1067 | break; |
1068 | default: | |
36e067b2 | 1069 | gdb_put_packet("E22"); |
3a9651d6 JD |
1070 | break; |
1071 | } | |
1072 | } | |
1073 | ||
26a16181 | 1074 | static void handle_insert_bp(GArray *params, void *user_ctx) |
77f6ce50 JD |
1075 | { |
1076 | int res; | |
1077 | ||
26a16181 | 1078 | if (params->len != 3) { |
36e067b2 | 1079 | gdb_put_packet("E22"); |
77f6ce50 JD |
1080 | return; |
1081 | } | |
1082 | ||
ae7467b1 AB |
1083 | res = gdb_breakpoint_insert(gdbserver_state.c_cpu, |
1084 | get_param(params, 0)->val_ul, | |
26a16181 AB |
1085 | get_param(params, 1)->val_ull, |
1086 | get_param(params, 2)->val_ull); | |
77f6ce50 | 1087 | if (res >= 0) { |
36e067b2 | 1088 | gdb_put_packet("OK"); |
77f6ce50 JD |
1089 | return; |
1090 | } else if (res == -ENOSYS) { | |
36e067b2 | 1091 | gdb_put_packet(""); |
77f6ce50 JD |
1092 | return; |
1093 | } | |
1094 | ||
36e067b2 | 1095 | gdb_put_packet("E22"); |
77f6ce50 JD |
1096 | } |
1097 | ||
26a16181 | 1098 | static void handle_remove_bp(GArray *params, void *user_ctx) |
77f6ce50 JD |
1099 | { |
1100 | int res; | |
1101 | ||
26a16181 | 1102 | if (params->len != 3) { |
36e067b2 | 1103 | gdb_put_packet("E22"); |
77f6ce50 JD |
1104 | return; |
1105 | } | |
1106 | ||
ae7467b1 AB |
1107 | res = gdb_breakpoint_remove(gdbserver_state.c_cpu, |
1108 | get_param(params, 0)->val_ul, | |
26a16181 AB |
1109 | get_param(params, 1)->val_ull, |
1110 | get_param(params, 2)->val_ull); | |
77f6ce50 | 1111 | if (res >= 0) { |
36e067b2 | 1112 | gdb_put_packet("OK"); |
77f6ce50 JD |
1113 | return; |
1114 | } else if (res == -ENOSYS) { | |
36e067b2 | 1115 | gdb_put_packet(""); |
77f6ce50 JD |
1116 | return; |
1117 | } | |
1118 | ||
36e067b2 | 1119 | gdb_put_packet("E22"); |
77f6ce50 JD |
1120 | } |
1121 | ||
94b2a62b AB |
1122 | /* |
1123 | * handle_set/get_reg | |
1124 | * | |
1125 | * Older gdb are really dumb, and don't use 'G/g' if 'P/p' is available. | |
1126 | * This works, but can be very slow. Anything new enough to understand | |
1127 | * XML also knows how to use this properly. However to use this we | |
1128 | * need to define a local XML file as well as be talking to a | |
1129 | * reasonably modern gdb. Responding with an empty packet will cause | |
1130 | * the remote gdb to fallback to older methods. | |
1131 | */ | |
1132 | ||
26a16181 | 1133 | static void handle_set_reg(GArray *params, void *user_ctx) |
62b3320b JD |
1134 | { |
1135 | int reg_size; | |
1136 | ||
1137 | if (!gdb_has_xml) { | |
36e067b2 | 1138 | gdb_put_packet(""); |
62b3320b JD |
1139 | return; |
1140 | } | |
1141 | ||
26a16181 | 1142 | if (params->len != 2) { |
36e067b2 | 1143 | gdb_put_packet("E22"); |
62b3320b JD |
1144 | return; |
1145 | } | |
1146 | ||
26a16181 | 1147 | reg_size = strlen(get_param(params, 1)->data) / 2; |
36e067b2 | 1148 | gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 1)->data, reg_size); |
4a25f1b9 | 1149 | gdb_write_register(gdbserver_state.g_cpu, gdbserver_state.mem_buf->data, |
26a16181 | 1150 | get_param(params, 0)->val_ull); |
36e067b2 | 1151 | gdb_put_packet("OK"); |
62b3320b JD |
1152 | } |
1153 | ||
26a16181 | 1154 | static void handle_get_reg(GArray *params, void *user_ctx) |
5d0e57bd JD |
1155 | { |
1156 | int reg_size; | |
1157 | ||
5d0e57bd | 1158 | if (!gdb_has_xml) { |
36e067b2 | 1159 | gdb_put_packet(""); |
5d0e57bd JD |
1160 | return; |
1161 | } | |
1162 | ||
26a16181 | 1163 | if (!params->len) { |
36e067b2 | 1164 | gdb_put_packet("E14"); |
5d0e57bd JD |
1165 | return; |
1166 | } | |
1167 | ||
4a25f1b9 | 1168 | reg_size = gdb_read_register(gdbserver_state.g_cpu, |
a010bdbe | 1169 | gdbserver_state.mem_buf, |
26a16181 | 1170 | get_param(params, 0)->val_ull); |
5d0e57bd | 1171 | if (!reg_size) { |
36e067b2 | 1172 | gdb_put_packet("E14"); |
5d0e57bd | 1173 | return; |
4a25f1b9 AB |
1174 | } else { |
1175 | g_byte_array_set_size(gdbserver_state.mem_buf, reg_size); | |
5d0e57bd JD |
1176 | } |
1177 | ||
36e067b2 AB |
1178 | gdb_memtohex(gdbserver_state.str_buf, |
1179 | gdbserver_state.mem_buf->data, reg_size); | |
1180 | gdb_put_strbuf(); | |
5d0e57bd JD |
1181 | } |
1182 | ||
26a16181 | 1183 | static void handle_write_mem(GArray *params, void *user_ctx) |
cc0ecc78 | 1184 | { |
26a16181 | 1185 | if (params->len != 3) { |
36e067b2 | 1186 | gdb_put_packet("E22"); |
cc0ecc78 JD |
1187 | return; |
1188 | } | |
1189 | ||
36e067b2 | 1190 | /* gdb_hextomem() reads 2*len bytes */ |
26a16181 AB |
1191 | if (get_param(params, 1)->val_ull > |
1192 | strlen(get_param(params, 2)->data) / 2) { | |
36e067b2 | 1193 | gdb_put_packet("E22"); |
cc0ecc78 JD |
1194 | return; |
1195 | } | |
1196 | ||
36e067b2 | 1197 | gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 2)->data, |
26a16181 AB |
1198 | get_param(params, 1)->val_ull); |
1199 | if (target_memory_rw_debug(gdbserver_state.g_cpu, | |
1200 | get_param(params, 0)->val_ull, | |
4a25f1b9 AB |
1201 | gdbserver_state.mem_buf->data, |
1202 | gdbserver_state.mem_buf->len, true)) { | |
36e067b2 | 1203 | gdb_put_packet("E14"); |
cc0ecc78 JD |
1204 | return; |
1205 | } | |
1206 | ||
36e067b2 | 1207 | gdb_put_packet("OK"); |
cc0ecc78 JD |
1208 | } |
1209 | ||
26a16181 | 1210 | static void handle_read_mem(GArray *params, void *user_ctx) |
da92e236 | 1211 | { |
26a16181 | 1212 | if (params->len != 2) { |
36e067b2 | 1213 | gdb_put_packet("E22"); |
da92e236 JD |
1214 | return; |
1215 | } | |
1216 | ||
36e067b2 | 1217 | /* gdb_memtohex() doubles the required space */ |
26a16181 | 1218 | if (get_param(params, 1)->val_ull > MAX_PACKET_LENGTH / 2) { |
36e067b2 | 1219 | gdb_put_packet("E22"); |
da92e236 JD |
1220 | return; |
1221 | } | |
1222 | ||
26a16181 AB |
1223 | g_byte_array_set_size(gdbserver_state.mem_buf, |
1224 | get_param(params, 1)->val_ull); | |
4a25f1b9 | 1225 | |
26a16181 AB |
1226 | if (target_memory_rw_debug(gdbserver_state.g_cpu, |
1227 | get_param(params, 0)->val_ull, | |
4a25f1b9 AB |
1228 | gdbserver_state.mem_buf->data, |
1229 | gdbserver_state.mem_buf->len, false)) { | |
36e067b2 | 1230 | gdb_put_packet("E14"); |
da92e236 JD |
1231 | return; |
1232 | } | |
1233 | ||
36e067b2 | 1234 | gdb_memtohex(gdbserver_state.str_buf, gdbserver_state.mem_buf->data, |
4a25f1b9 | 1235 | gdbserver_state.mem_buf->len); |
36e067b2 | 1236 | gdb_put_strbuf(); |
da92e236 JD |
1237 | } |
1238 | ||
26a16181 | 1239 | static void handle_write_all_regs(GArray *params, void *user_ctx) |
287ca120 JD |
1240 | { |
1241 | target_ulong addr, len; | |
1242 | uint8_t *registers; | |
1243 | int reg_size; | |
1244 | ||
26a16181 | 1245 | if (!params->len) { |
287ca120 JD |
1246 | return; |
1247 | } | |
1248 | ||
a346af3e | 1249 | cpu_synchronize_state(gdbserver_state.g_cpu); |
26a16181 | 1250 | len = strlen(get_param(params, 0)->data) / 2; |
36e067b2 | 1251 | gdb_hextomem(gdbserver_state.mem_buf, get_param(params, 0)->data, len); |
4a25f1b9 | 1252 | registers = gdbserver_state.mem_buf->data; |
a346af3e | 1253 | for (addr = 0; addr < gdbserver_state.g_cpu->gdb_num_g_regs && len > 0; |
287ca120 | 1254 | addr++) { |
a346af3e | 1255 | reg_size = gdb_write_register(gdbserver_state.g_cpu, registers, addr); |
287ca120 JD |
1256 | len -= reg_size; |
1257 | registers += reg_size; | |
1258 | } | |
36e067b2 | 1259 | gdb_put_packet("OK"); |
287ca120 JD |
1260 | } |
1261 | ||
26a16181 | 1262 | static void handle_read_all_regs(GArray *params, void *user_ctx) |
397d1370 JD |
1263 | { |
1264 | target_ulong addr, len; | |
1265 | ||
a346af3e | 1266 | cpu_synchronize_state(gdbserver_state.g_cpu); |
a010bdbe | 1267 | g_byte_array_set_size(gdbserver_state.mem_buf, 0); |
397d1370 | 1268 | len = 0; |
a346af3e | 1269 | for (addr = 0; addr < gdbserver_state.g_cpu->gdb_num_g_regs; addr++) { |
4a25f1b9 | 1270 | len += gdb_read_register(gdbserver_state.g_cpu, |
a010bdbe | 1271 | gdbserver_state.mem_buf, |
397d1370 JD |
1272 | addr); |
1273 | } | |
a010bdbe | 1274 | g_assert(len == gdbserver_state.mem_buf->len); |
397d1370 | 1275 | |
36e067b2 AB |
1276 | gdb_memtohex(gdbserver_state.str_buf, gdbserver_state.mem_buf->data, len); |
1277 | gdb_put_strbuf(); | |
397d1370 JD |
1278 | } |
1279 | ||
26a16181 | 1280 | static void handle_file_io(GArray *params, void *user_ctx) |
4b20fab1 | 1281 | { |
26a16181 | 1282 | if (params->len >= 1 && gdbserver_state.current_syscall_cb) { |
64c8c6a9 RH |
1283 | uint64_t ret; |
1284 | int err; | |
4b20fab1 | 1285 | |
64c8c6a9 | 1286 | ret = get_param(params, 0)->val_ull; |
26a16181 | 1287 | if (params->len >= 2) { |
64c8c6a9 | 1288 | err = get_param(params, 1)->val_ull; |
c6ee9521 SL |
1289 | } else { |
1290 | err = 0; | |
1291 | } | |
c805e118 RH |
1292 | |
1293 | /* Convert GDB error numbers back to host error numbers. */ | |
1294 | #define E(X) case GDB_E##X: err = E##X; break | |
1295 | switch (err) { | |
1296 | case 0: | |
1297 | break; | |
1298 | E(PERM); | |
1299 | E(NOENT); | |
1300 | E(INTR); | |
1301 | E(BADF); | |
1302 | E(ACCES); | |
1303 | E(FAULT); | |
1304 | E(BUSY); | |
1305 | E(EXIST); | |
1306 | E(NODEV); | |
1307 | E(NOTDIR); | |
1308 | E(ISDIR); | |
1309 | E(INVAL); | |
1310 | E(NFILE); | |
1311 | E(MFILE); | |
1312 | E(FBIG); | |
1313 | E(NOSPC); | |
1314 | E(SPIPE); | |
1315 | E(ROFS); | |
1316 | E(NAMETOOLONG); | |
1317 | default: | |
1318 | err = EINVAL; | |
1319 | break; | |
1320 | } | |
1321 | #undef E | |
1322 | ||
a346af3e AB |
1323 | gdbserver_state.current_syscall_cb(gdbserver_state.c_cpu, ret, err); |
1324 | gdbserver_state.current_syscall_cb = NULL; | |
4b20fab1 JD |
1325 | } |
1326 | ||
26a16181 | 1327 | if (params->len >= 3 && get_param(params, 2)->opcode == (uint8_t)'C') { |
36e067b2 | 1328 | gdb_put_packet("T02"); |
4b20fab1 JD |
1329 | return; |
1330 | } | |
1331 | ||
a346af3e | 1332 | gdb_continue(); |
4b20fab1 JD |
1333 | } |
1334 | ||
26a16181 | 1335 | static void handle_step(GArray *params, void *user_ctx) |
933f80dd | 1336 | { |
26a16181 AB |
1337 | if (params->len) { |
1338 | gdb_set_cpu_pc((target_ulong)get_param(params, 0)->val_ull); | |
933f80dd JD |
1339 | } |
1340 | ||
ecd39d62 | 1341 | cpu_single_step(gdbserver_state.c_cpu, gdbserver_state.sstep_flags); |
a346af3e | 1342 | gdb_continue(); |
933f80dd JD |
1343 | } |
1344 | ||
26a16181 | 1345 | static void handle_backward(GArray *params, void *user_ctx) |
fda8458b | 1346 | { |
ed12f5b4 | 1347 | if (!stub_can_reverse()) { |
36e067b2 | 1348 | gdb_put_packet("E22"); |
fda8458b | 1349 | } |
26a16181 AB |
1350 | if (params->len == 1) { |
1351 | switch (get_param(params, 0)->opcode) { | |
fda8458b PD |
1352 | case 's': |
1353 | if (replay_reverse_step()) { | |
1354 | gdb_continue(); | |
1355 | } else { | |
36e067b2 | 1356 | gdb_put_packet("E14"); |
fda8458b PD |
1357 | } |
1358 | return; | |
cda38259 PD |
1359 | case 'c': |
1360 | if (replay_reverse_continue()) { | |
1361 | gdb_continue(); | |
1362 | } else { | |
36e067b2 | 1363 | gdb_put_packet("E14"); |
cda38259 PD |
1364 | } |
1365 | return; | |
fda8458b PD |
1366 | } |
1367 | } | |
1368 | ||
1369 | /* Default invalid command */ | |
36e067b2 | 1370 | gdb_put_packet(""); |
fda8458b PD |
1371 | } |
1372 | ||
26a16181 | 1373 | static void handle_v_cont_query(GArray *params, void *user_ctx) |
8536ec02 | 1374 | { |
36e067b2 | 1375 | gdb_put_packet("vCont;c;C;s;S"); |
8536ec02 JD |
1376 | } |
1377 | ||
26a16181 | 1378 | static void handle_v_cont(GArray *params, void *user_ctx) |
8536ec02 JD |
1379 | { |
1380 | int res; | |
1381 | ||
26a16181 | 1382 | if (!params->len) { |
8536ec02 JD |
1383 | return; |
1384 | } | |
1385 | ||
26a16181 | 1386 | res = gdb_handle_vcont(get_param(params, 0)->data); |
8536ec02 | 1387 | if ((res == -EINVAL) || (res == -ERANGE)) { |
36e067b2 | 1388 | gdb_put_packet("E22"); |
8536ec02 | 1389 | } else if (res) { |
36e067b2 | 1390 | gdb_put_packet(""); |
8536ec02 JD |
1391 | } |
1392 | } | |
1393 | ||
26a16181 | 1394 | static void handle_v_attach(GArray *params, void *user_ctx) |
8536ec02 JD |
1395 | { |
1396 | GDBProcess *process; | |
1397 | CPUState *cpu; | |
8536ec02 | 1398 | |
308f9e88 | 1399 | g_string_assign(gdbserver_state.str_buf, "E22"); |
26a16181 | 1400 | if (!params->len) { |
8536ec02 JD |
1401 | goto cleanup; |
1402 | } | |
1403 | ||
26a16181 | 1404 | process = gdb_get_process(get_param(params, 0)->val_ul); |
8536ec02 JD |
1405 | if (!process) { |
1406 | goto cleanup; | |
1407 | } | |
1408 | ||
a346af3e | 1409 | cpu = get_first_cpu_in_process(process); |
8536ec02 JD |
1410 | if (!cpu) { |
1411 | goto cleanup; | |
1412 | } | |
1413 | ||
1414 | process->attached = true; | |
a346af3e AB |
1415 | gdbserver_state.g_cpu = cpu; |
1416 | gdbserver_state.c_cpu = cpu; | |
8536ec02 | 1417 | |
308f9e88 AB |
1418 | g_string_printf(gdbserver_state.str_buf, "T%02xthread:", GDB_SIGNAL_TRAP); |
1419 | gdb_append_thread_id(cpu, gdbserver_state.str_buf); | |
1420 | g_string_append_c(gdbserver_state.str_buf, ';'); | |
8536ec02 | 1421 | cleanup: |
36e067b2 | 1422 | gdb_put_strbuf(); |
8536ec02 JD |
1423 | } |
1424 | ||
26a16181 | 1425 | static void handle_v_kill(GArray *params, void *user_ctx) |
8536ec02 JD |
1426 | { |
1427 | /* Kill the target */ | |
36e067b2 | 1428 | gdb_put_packet("OK"); |
8536ec02 | 1429 | error_report("QEMU: Terminated via GDBstub"); |
b9e10c6c | 1430 | gdb_exit(0); |
8536ec02 JD |
1431 | exit(0); |
1432 | } | |
1433 | ||
305bea06 | 1434 | static const GdbCmdParseEntry gdb_v_commands_table[] = { |
8536ec02 JD |
1435 | /* Order is important if has same prefix */ |
1436 | { | |
1437 | .handler = handle_v_cont_query, | |
1438 | .cmd = "Cont?", | |
1439 | .cmd_startswith = 1 | |
1440 | }, | |
1441 | { | |
1442 | .handler = handle_v_cont, | |
1443 | .cmd = "Cont", | |
1444 | .cmd_startswith = 1, | |
1445 | .schema = "s0" | |
1446 | }, | |
1447 | { | |
1448 | .handler = handle_v_attach, | |
1449 | .cmd = "Attach;", | |
1450 | .cmd_startswith = 1, | |
1451 | .schema = "l0" | |
1452 | }, | |
1453 | { | |
1454 | .handler = handle_v_kill, | |
1455 | .cmd = "Kill;", | |
1456 | .cmd_startswith = 1 | |
1457 | }, | |
1458 | }; | |
1459 | ||
26a16181 | 1460 | static void handle_v_commands(GArray *params, void *user_ctx) |
8536ec02 | 1461 | { |
26a16181 | 1462 | if (!params->len) { |
8536ec02 JD |
1463 | return; |
1464 | } | |
1465 | ||
26a16181 | 1466 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
8536ec02 JD |
1467 | gdb_v_commands_table, |
1468 | ARRAY_SIZE(gdb_v_commands_table))) { | |
36e067b2 | 1469 | gdb_put_packet(""); |
8536ec02 JD |
1470 | } |
1471 | } | |
1472 | ||
26a16181 | 1473 | static void handle_query_qemu_sstepbits(GArray *params, void *user_ctx) |
2704efad | 1474 | { |
ecd39d62 ML |
1475 | g_string_printf(gdbserver_state.str_buf, "ENABLE=%x", SSTEP_ENABLE); |
1476 | ||
1477 | if (gdbserver_state.supported_sstep_flags & SSTEP_NOIRQ) { | |
1478 | g_string_append_printf(gdbserver_state.str_buf, ",NOIRQ=%x", | |
1479 | SSTEP_NOIRQ); | |
1480 | } | |
1481 | ||
1482 | if (gdbserver_state.supported_sstep_flags & SSTEP_NOTIMER) { | |
1483 | g_string_append_printf(gdbserver_state.str_buf, ",NOTIMER=%x", | |
1484 | SSTEP_NOTIMER); | |
1485 | } | |
1486 | ||
36e067b2 | 1487 | gdb_put_strbuf(); |
2704efad JD |
1488 | } |
1489 | ||
26a16181 | 1490 | static void handle_set_qemu_sstep(GArray *params, void *user_ctx) |
2704efad | 1491 | { |
ecd39d62 ML |
1492 | int new_sstep_flags; |
1493 | ||
26a16181 | 1494 | if (!params->len) { |
2704efad JD |
1495 | return; |
1496 | } | |
1497 | ||
ecd39d62 ML |
1498 | new_sstep_flags = get_param(params, 0)->val_ul; |
1499 | ||
1500 | if (new_sstep_flags & ~gdbserver_state.supported_sstep_flags) { | |
36e067b2 | 1501 | gdb_put_packet("E22"); |
ecd39d62 ML |
1502 | return; |
1503 | } | |
1504 | ||
1505 | gdbserver_state.sstep_flags = new_sstep_flags; | |
36e067b2 | 1506 | gdb_put_packet("OK"); |
2704efad JD |
1507 | } |
1508 | ||
26a16181 | 1509 | static void handle_query_qemu_sstep(GArray *params, void *user_ctx) |
2704efad | 1510 | { |
ecd39d62 ML |
1511 | g_string_printf(gdbserver_state.str_buf, "0x%x", |
1512 | gdbserver_state.sstep_flags); | |
36e067b2 | 1513 | gdb_put_strbuf(); |
2704efad JD |
1514 | } |
1515 | ||
26a16181 | 1516 | static void handle_query_curr_tid(GArray *params, void *user_ctx) |
b4608c04 | 1517 | { |
2e0f2cfb | 1518 | CPUState *cpu; |
2704efad | 1519 | GDBProcess *process; |
2704efad JD |
1520 | |
1521 | /* | |
1522 | * "Current thread" remains vague in the spec, so always return | |
1523 | * the first thread of the current process (gdb returns the | |
1524 | * first thread). | |
1525 | */ | |
a346af3e AB |
1526 | process = gdb_get_cpu_process(gdbserver_state.g_cpu); |
1527 | cpu = get_first_cpu_in_process(process); | |
308f9e88 AB |
1528 | g_string_assign(gdbserver_state.str_buf, "QC"); |
1529 | gdb_append_thread_id(cpu, gdbserver_state.str_buf); | |
36e067b2 | 1530 | gdb_put_strbuf(); |
2704efad JD |
1531 | } |
1532 | ||
26a16181 | 1533 | static void handle_query_threads(GArray *params, void *user_ctx) |
2704efad | 1534 | { |
a346af3e | 1535 | if (!gdbserver_state.query_cpu) { |
36e067b2 | 1536 | gdb_put_packet("l"); |
2704efad JD |
1537 | return; |
1538 | } | |
1539 | ||
308f9e88 AB |
1540 | g_string_assign(gdbserver_state.str_buf, "m"); |
1541 | gdb_append_thread_id(gdbserver_state.query_cpu, gdbserver_state.str_buf); | |
36e067b2 | 1542 | gdb_put_strbuf(); |
a346af3e | 1543 | gdbserver_state.query_cpu = gdb_next_attached_cpu(gdbserver_state.query_cpu); |
2704efad JD |
1544 | } |
1545 | ||
26a16181 | 1546 | static void handle_query_first_threads(GArray *params, void *user_ctx) |
2704efad | 1547 | { |
a346af3e | 1548 | gdbserver_state.query_cpu = gdb_first_attached_cpu(); |
26a16181 | 1549 | handle_query_threads(params, user_ctx); |
2704efad JD |
1550 | } |
1551 | ||
26a16181 | 1552 | static void handle_query_thread_extra(GArray *params, void *user_ctx) |
2704efad | 1553 | { |
308f9e88 | 1554 | g_autoptr(GString) rs = g_string_new(NULL); |
2704efad | 1555 | CPUState *cpu; |
2704efad | 1556 | |
26a16181 AB |
1557 | if (!params->len || |
1558 | get_param(params, 0)->thread_id.kind == GDB_READ_THREAD_ERR) { | |
36e067b2 | 1559 | gdb_put_packet("E22"); |
2704efad JD |
1560 | return; |
1561 | } | |
1562 | ||
26a16181 AB |
1563 | cpu = gdb_get_cpu(get_param(params, 0)->thread_id.pid, |
1564 | get_param(params, 0)->thread_id.tid); | |
2704efad JD |
1565 | if (!cpu) { |
1566 | return; | |
1567 | } | |
1568 | ||
1569 | cpu_synchronize_state(cpu); | |
1570 | ||
a346af3e | 1571 | if (gdbserver_state.multiprocess && (gdbserver_state.process_num > 1)) { |
2704efad JD |
1572 | /* Print the CPU model and name in multiprocess mode */ |
1573 | ObjectClass *oc = object_get_class(OBJECT(cpu)); | |
1574 | const char *cpu_model = object_class_get_name(oc); | |
7a309cc9 | 1575 | const char *cpu_name = |
076b2fad | 1576 | object_get_canonical_path_component(OBJECT(cpu)); |
308f9e88 AB |
1577 | g_string_printf(rs, "%s %s [%s]", cpu_model, cpu_name, |
1578 | cpu->halted ? "halted " : "running"); | |
2704efad | 1579 | } else { |
308f9e88 | 1580 | g_string_printf(rs, "CPU#%d [%s]", cpu->cpu_index, |
2704efad JD |
1581 | cpu->halted ? "halted " : "running"); |
1582 | } | |
308f9e88 | 1583 | trace_gdbstub_op_extra_info(rs->str); |
36e067b2 AB |
1584 | gdb_memtohex(gdbserver_state.str_buf, (uint8_t *)rs->str, rs->len); |
1585 | gdb_put_strbuf(); | |
2704efad JD |
1586 | } |
1587 | ||
26a16181 | 1588 | static void handle_query_supported(GArray *params, void *user_ctx) |
2704efad JD |
1589 | { |
1590 | CPUClass *cc; | |
1591 | ||
308f9e88 | 1592 | g_string_printf(gdbserver_state.str_buf, "PacketSize=%x", MAX_PACKET_LENGTH); |
2704efad JD |
1593 | cc = CPU_GET_CLASS(first_cpu); |
1594 | if (cc->gdb_core_xml_file) { | |
308f9e88 | 1595 | g_string_append(gdbserver_state.str_buf, ";qXfer:features:read+"); |
2704efad JD |
1596 | } |
1597 | ||
ed12f5b4 | 1598 | if (stub_can_reverse()) { |
cda38259 PD |
1599 | g_string_append(gdbserver_state.str_buf, |
1600 | ";ReverseStep+;ReverseContinue+"); | |
fda8458b PD |
1601 | } |
1602 | ||
51c623b0 LY |
1603 | #ifdef CONFIG_USER_ONLY |
1604 | if (gdbserver_state.c_cpu->opaque) { | |
1605 | g_string_append(gdbserver_state.str_buf, ";qXfer:auxv:read+"); | |
1606 | } | |
1607 | #endif | |
1608 | ||
26a16181 AB |
1609 | if (params->len && |
1610 | strstr(get_param(params, 0)->data, "multiprocess+")) { | |
a346af3e | 1611 | gdbserver_state.multiprocess = true; |
2704efad JD |
1612 | } |
1613 | ||
3bc2609d | 1614 | g_string_append(gdbserver_state.str_buf, ";vContSupported+;multiprocess+"); |
36e067b2 | 1615 | gdb_put_strbuf(); |
2704efad JD |
1616 | } |
1617 | ||
26a16181 | 1618 | static void handle_query_xfer_features(GArray *params, void *user_ctx) |
2704efad | 1619 | { |
c145eeae | 1620 | GDBProcess *process; |
5b24c641 | 1621 | CPUClass *cc; |
2704efad JD |
1622 | unsigned long len, total_len, addr; |
1623 | const char *xml; | |
b4608c04 | 1624 | const char *p; |
2704efad | 1625 | |
26a16181 | 1626 | if (params->len < 3) { |
36e067b2 | 1627 | gdb_put_packet("E22"); |
2704efad JD |
1628 | return; |
1629 | } | |
1630 | ||
a346af3e AB |
1631 | process = gdb_get_cpu_process(gdbserver_state.g_cpu); |
1632 | cc = CPU_GET_CLASS(gdbserver_state.g_cpu); | |
2704efad | 1633 | if (!cc->gdb_core_xml_file) { |
36e067b2 | 1634 | gdb_put_packet(""); |
2704efad JD |
1635 | return; |
1636 | } | |
1637 | ||
1638 | gdb_has_xml = true; | |
26a16181 | 1639 | p = get_param(params, 0)->data; |
a346af3e | 1640 | xml = get_feature_xml(p, &p, process); |
2704efad | 1641 | if (!xml) { |
36e067b2 | 1642 | gdb_put_packet("E00"); |
2704efad JD |
1643 | return; |
1644 | } | |
1645 | ||
26a16181 AB |
1646 | addr = get_param(params, 1)->val_ul; |
1647 | len = get_param(params, 2)->val_ul; | |
2704efad JD |
1648 | total_len = strlen(xml); |
1649 | if (addr > total_len) { | |
36e067b2 | 1650 | gdb_put_packet("E00"); |
2704efad JD |
1651 | return; |
1652 | } | |
1653 | ||
1654 | if (len > (MAX_PACKET_LENGTH - 5) / 2) { | |
1655 | len = (MAX_PACKET_LENGTH - 5) / 2; | |
1656 | } | |
1657 | ||
1658 | if (len < total_len - addr) { | |
308f9e88 | 1659 | g_string_assign(gdbserver_state.str_buf, "m"); |
36e067b2 | 1660 | gdb_memtox(gdbserver_state.str_buf, xml + addr, len); |
2704efad | 1661 | } else { |
308f9e88 | 1662 | g_string_assign(gdbserver_state.str_buf, "l"); |
36e067b2 | 1663 | gdb_memtox(gdbserver_state.str_buf, xml + addr, total_len - addr); |
2704efad JD |
1664 | } |
1665 | ||
36e067b2 | 1666 | gdb_put_packet_binary(gdbserver_state.str_buf->str, |
308f9e88 | 1667 | gdbserver_state.str_buf->len, true); |
2704efad JD |
1668 | } |
1669 | ||
26a16181 | 1670 | static void handle_query_qemu_supported(GArray *params, void *user_ctx) |
2704efad | 1671 | { |
308f9e88 | 1672 | g_string_printf(gdbserver_state.str_buf, "sstepbits;sstep"); |
ab4752ec | 1673 | #ifndef CONFIG_USER_ONLY |
308f9e88 | 1674 | g_string_append(gdbserver_state.str_buf, ";PhyMemMode"); |
ab4752ec | 1675 | #endif |
36e067b2 | 1676 | gdb_put_strbuf(); |
ab4752ec JD |
1677 | } |
1678 | ||
1679 | #ifndef CONFIG_USER_ONLY | |
26a16181 | 1680 | static void handle_query_qemu_phy_mem_mode(GArray *params, |
ab4752ec JD |
1681 | void *user_ctx) |
1682 | { | |
308f9e88 | 1683 | g_string_printf(gdbserver_state.str_buf, "%d", phy_memory_mode); |
36e067b2 | 1684 | gdb_put_strbuf(); |
ab4752ec JD |
1685 | } |
1686 | ||
26a16181 | 1687 | static void handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx) |
ab4752ec | 1688 | { |
26a16181 | 1689 | if (!params->len) { |
36e067b2 | 1690 | gdb_put_packet("E22"); |
ab4752ec JD |
1691 | return; |
1692 | } | |
1693 | ||
26a16181 | 1694 | if (!get_param(params, 0)->val_ul) { |
ab4752ec JD |
1695 | phy_memory_mode = 0; |
1696 | } else { | |
1697 | phy_memory_mode = 1; | |
1698 | } | |
36e067b2 | 1699 | gdb_put_packet("OK"); |
2704efad | 1700 | } |
ab4752ec | 1701 | #endif |
2704efad | 1702 | |
305bea06 | 1703 | static const GdbCmdParseEntry gdb_gen_query_set_common_table[] = { |
2704efad JD |
1704 | /* Order is important if has same prefix */ |
1705 | { | |
1706 | .handler = handle_query_qemu_sstepbits, | |
1707 | .cmd = "qemu.sstepbits", | |
1708 | }, | |
1709 | { | |
1710 | .handler = handle_query_qemu_sstep, | |
1711 | .cmd = "qemu.sstep", | |
1712 | }, | |
1713 | { | |
1714 | .handler = handle_set_qemu_sstep, | |
1715 | .cmd = "qemu.sstep=", | |
1716 | .cmd_startswith = 1, | |
1717 | .schema = "l0" | |
1718 | }, | |
1719 | }; | |
1720 | ||
305bea06 | 1721 | static const GdbCmdParseEntry gdb_gen_query_table[] = { |
2704efad JD |
1722 | { |
1723 | .handler = handle_query_curr_tid, | |
1724 | .cmd = "C", | |
1725 | }, | |
1726 | { | |
1727 | .handler = handle_query_threads, | |
1728 | .cmd = "sThreadInfo", | |
1729 | }, | |
1730 | { | |
1731 | .handler = handle_query_first_threads, | |
1732 | .cmd = "fThreadInfo", | |
1733 | }, | |
1734 | { | |
1735 | .handler = handle_query_thread_extra, | |
1736 | .cmd = "ThreadExtraInfo,", | |
1737 | .cmd_startswith = 1, | |
1738 | .schema = "t0" | |
1739 | }, | |
1740 | #ifdef CONFIG_USER_ONLY | |
1741 | { | |
d96bf49b | 1742 | .handler = gdb_handle_query_offsets, |
2704efad JD |
1743 | .cmd = "Offsets", |
1744 | }, | |
1745 | #else | |
1746 | { | |
b6fa2ec2 | 1747 | .handler = gdb_handle_query_rcmd, |
2704efad JD |
1748 | .cmd = "Rcmd,", |
1749 | .cmd_startswith = 1, | |
1750 | .schema = "s0" | |
1751 | }, | |
1752 | #endif | |
1753 | { | |
1754 | .handler = handle_query_supported, | |
1755 | .cmd = "Supported:", | |
1756 | .cmd_startswith = 1, | |
1757 | .schema = "s0" | |
1758 | }, | |
1759 | { | |
1760 | .handler = handle_query_supported, | |
1761 | .cmd = "Supported", | |
1762 | .schema = "s0" | |
1763 | }, | |
1764 | { | |
1765 | .handler = handle_query_xfer_features, | |
1766 | .cmd = "Xfer:features:read:", | |
1767 | .cmd_startswith = 1, | |
1768 | .schema = "s:l,l0" | |
1769 | }, | |
51c623b0 LY |
1770 | #if defined(CONFIG_USER_ONLY) && defined(CONFIG_LINUX_USER) |
1771 | { | |
d96bf49b | 1772 | .handler = gdb_handle_query_xfer_auxv, |
51c623b0 LY |
1773 | .cmd = "Xfer:auxv:read::", |
1774 | .cmd_startswith = 1, | |
1775 | .schema = "l,l0" | |
1776 | }, | |
1777 | #endif | |
2704efad | 1778 | { |
8a2025b3 | 1779 | .handler = gdb_handle_query_attached, |
2704efad JD |
1780 | .cmd = "Attached:", |
1781 | .cmd_startswith = 1 | |
1782 | }, | |
1783 | { | |
8a2025b3 | 1784 | .handler = gdb_handle_query_attached, |
2704efad JD |
1785 | .cmd = "Attached", |
1786 | }, | |
1787 | { | |
1788 | .handler = handle_query_qemu_supported, | |
1789 | .cmd = "qemu.Supported", | |
1790 | }, | |
ab4752ec JD |
1791 | #ifndef CONFIG_USER_ONLY |
1792 | { | |
1793 | .handler = handle_query_qemu_phy_mem_mode, | |
1794 | .cmd = "qemu.PhyMemMode", | |
1795 | }, | |
1796 | #endif | |
2704efad JD |
1797 | }; |
1798 | ||
305bea06 | 1799 | static const GdbCmdParseEntry gdb_gen_set_table[] = { |
2704efad JD |
1800 | /* Order is important if has same prefix */ |
1801 | { | |
1802 | .handler = handle_set_qemu_sstep, | |
1803 | .cmd = "qemu.sstep:", | |
1804 | .cmd_startswith = 1, | |
1805 | .schema = "l0" | |
1806 | }, | |
ab4752ec JD |
1807 | #ifndef CONFIG_USER_ONLY |
1808 | { | |
1809 | .handler = handle_set_qemu_phy_mem_mode, | |
1810 | .cmd = "qemu.PhyMemMode:", | |
1811 | .cmd_startswith = 1, | |
1812 | .schema = "l0" | |
1813 | }, | |
1814 | #endif | |
2704efad JD |
1815 | }; |
1816 | ||
26a16181 | 1817 | static void handle_gen_query(GArray *params, void *user_ctx) |
2704efad | 1818 | { |
26a16181 | 1819 | if (!params->len) { |
2704efad JD |
1820 | return; |
1821 | } | |
1822 | ||
26a16181 | 1823 | if (!process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
1824 | gdb_gen_query_set_common_table, |
1825 | ARRAY_SIZE(gdb_gen_query_set_common_table))) { | |
1826 | return; | |
1827 | } | |
1828 | ||
26a16181 | 1829 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
1830 | gdb_gen_query_table, |
1831 | ARRAY_SIZE(gdb_gen_query_table))) { | |
36e067b2 | 1832 | gdb_put_packet(""); |
2704efad JD |
1833 | } |
1834 | } | |
1835 | ||
26a16181 | 1836 | static void handle_gen_set(GArray *params, void *user_ctx) |
2704efad | 1837 | { |
26a16181 | 1838 | if (!params->len) { |
2704efad JD |
1839 | return; |
1840 | } | |
1841 | ||
26a16181 | 1842 | if (!process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
1843 | gdb_gen_query_set_common_table, |
1844 | ARRAY_SIZE(gdb_gen_query_set_common_table))) { | |
1845 | return; | |
1846 | } | |
1847 | ||
26a16181 | 1848 | if (process_string_cmd(NULL, get_param(params, 0)->data, |
2704efad JD |
1849 | gdb_gen_set_table, |
1850 | ARRAY_SIZE(gdb_gen_set_table))) { | |
36e067b2 | 1851 | gdb_put_packet(""); |
2704efad JD |
1852 | } |
1853 | } | |
1854 | ||
26a16181 | 1855 | static void handle_target_halt(GArray *params, void *user_ctx) |
7009d579 | 1856 | { |
308f9e88 AB |
1857 | g_string_printf(gdbserver_state.str_buf, "T%02xthread:", GDB_SIGNAL_TRAP); |
1858 | gdb_append_thread_id(gdbserver_state.c_cpu, gdbserver_state.str_buf); | |
1859 | g_string_append_c(gdbserver_state.str_buf, ';'); | |
36e067b2 | 1860 | gdb_put_strbuf(); |
7009d579 JD |
1861 | /* |
1862 | * Remove all the breakpoints when this query is issued, | |
1863 | * because gdb is doing an initial connect and the state | |
1864 | * should be cleaned up. | |
1865 | */ | |
ae7467b1 | 1866 | gdb_breakpoint_remove_all(gdbserver_state.c_cpu); |
7009d579 JD |
1867 | } |
1868 | ||
a346af3e | 1869 | static int gdb_handle_packet(const char *line_buf) |
2704efad | 1870 | { |
3e2c1261 | 1871 | const GdbCmdParseEntry *cmd_parser = NULL; |
3b46e624 | 1872 | |
5c9522b3 | 1873 | trace_gdbstub_io_command(line_buf); |
118e2268 | 1874 | |
3f1cbac7 | 1875 | switch (line_buf[0]) { |
53fd6554 | 1876 | case '!': |
36e067b2 | 1877 | gdb_put_packet("OK"); |
53fd6554 | 1878 | break; |
858693c6 | 1879 | case '?': |
7009d579 JD |
1880 | { |
1881 | static const GdbCmdParseEntry target_halted_cmd_desc = { | |
1882 | .handler = handle_target_halt, | |
1883 | .cmd = "?", | |
1884 | .cmd_startswith = 1 | |
1885 | }; | |
1886 | cmd_parser = &target_halted_cmd_desc; | |
1887 | } | |
858693c6 FB |
1888 | break; |
1889 | case 'c': | |
4d6e3fe2 JD |
1890 | { |
1891 | static const GdbCmdParseEntry continue_cmd_desc = { | |
1892 | .handler = handle_continue, | |
1893 | .cmd = "c", | |
1894 | .cmd_startswith = 1, | |
1895 | .schema = "L0" | |
1896 | }; | |
1897 | cmd_parser = &continue_cmd_desc; | |
858693c6 | 1898 | } |
4d6e3fe2 | 1899 | break; |
1f487ee9 | 1900 | case 'C': |
ccc47d5d JD |
1901 | { |
1902 | static const GdbCmdParseEntry cont_with_sig_cmd_desc = { | |
1903 | .handler = handle_cont_with_sig, | |
1904 | .cmd = "C", | |
1905 | .cmd_startswith = 1, | |
1906 | .schema = "l0" | |
1907 | }; | |
1908 | cmd_parser = &cont_with_sig_cmd_desc; | |
1909 | } | |
1910 | break; | |
dd32aa10 | 1911 | case 'v': |
8536ec02 JD |
1912 | { |
1913 | static const GdbCmdParseEntry v_cmd_desc = { | |
1914 | .handler = handle_v_commands, | |
1915 | .cmd = "v", | |
1916 | .cmd_startswith = 1, | |
1917 | .schema = "s0" | |
1918 | }; | |
1919 | cmd_parser = &v_cmd_desc; | |
dd32aa10 | 1920 | } |
8536ec02 | 1921 | break; |
7d03f82f EI |
1922 | case 'k': |
1923 | /* Kill the target */ | |
7ae6c571 | 1924 | error_report("QEMU: Terminated via GDBstub"); |
b9e10c6c | 1925 | gdb_exit(0); |
7d03f82f EI |
1926 | exit(0); |
1927 | case 'D': | |
3e2c1261 JD |
1928 | { |
1929 | static const GdbCmdParseEntry detach_cmd_desc = { | |
1930 | .handler = handle_detach, | |
1931 | .cmd = "D", | |
1932 | .cmd_startswith = 1, | |
1933 | .schema = "?.l0" | |
1934 | }; | |
1935 | cmd_parser = &detach_cmd_desc; | |
546f3c67 | 1936 | } |
7d03f82f | 1937 | break; |
858693c6 | 1938 | case 's': |
933f80dd JD |
1939 | { |
1940 | static const GdbCmdParseEntry step_cmd_desc = { | |
1941 | .handler = handle_step, | |
1942 | .cmd = "s", | |
1943 | .cmd_startswith = 1, | |
1944 | .schema = "L0" | |
1945 | }; | |
1946 | cmd_parser = &step_cmd_desc; | |
858693c6 | 1947 | } |
933f80dd | 1948 | break; |
fda8458b PD |
1949 | case 'b': |
1950 | { | |
1951 | static const GdbCmdParseEntry backward_cmd_desc = { | |
1952 | .handler = handle_backward, | |
1953 | .cmd = "b", | |
1954 | .cmd_startswith = 1, | |
1955 | .schema = "o0" | |
1956 | }; | |
1957 | cmd_parser = &backward_cmd_desc; | |
1958 | } | |
1959 | break; | |
a2d1ebaf PB |
1960 | case 'F': |
1961 | { | |
4b20fab1 JD |
1962 | static const GdbCmdParseEntry file_io_cmd_desc = { |
1963 | .handler = handle_file_io, | |
1964 | .cmd = "F", | |
1965 | .cmd_startswith = 1, | |
1966 | .schema = "L,L,o0" | |
1967 | }; | |
1968 | cmd_parser = &file_io_cmd_desc; | |
a2d1ebaf PB |
1969 | } |
1970 | break; | |
858693c6 | 1971 | case 'g': |
397d1370 JD |
1972 | { |
1973 | static const GdbCmdParseEntry read_all_regs_cmd_desc = { | |
1974 | .handler = handle_read_all_regs, | |
1975 | .cmd = "g", | |
1976 | .cmd_startswith = 1 | |
1977 | }; | |
1978 | cmd_parser = &read_all_regs_cmd_desc; | |
56aebc89 | 1979 | } |
858693c6 FB |
1980 | break; |
1981 | case 'G': | |
287ca120 JD |
1982 | { |
1983 | static const GdbCmdParseEntry write_all_regs_cmd_desc = { | |
1984 | .handler = handle_write_all_regs, | |
1985 | .cmd = "G", | |
1986 | .cmd_startswith = 1, | |
1987 | .schema = "s0" | |
1988 | }; | |
1989 | cmd_parser = &write_all_regs_cmd_desc; | |
56aebc89 | 1990 | } |
858693c6 FB |
1991 | break; |
1992 | case 'm': | |
da92e236 JD |
1993 | { |
1994 | static const GdbCmdParseEntry read_mem_cmd_desc = { | |
1995 | .handler = handle_read_mem, | |
1996 | .cmd = "m", | |
1997 | .cmd_startswith = 1, | |
1998 | .schema = "L,L0" | |
1999 | }; | |
2000 | cmd_parser = &read_mem_cmd_desc; | |
6f970bd9 | 2001 | } |
858693c6 FB |
2002 | break; |
2003 | case 'M': | |
cc0ecc78 JD |
2004 | { |
2005 | static const GdbCmdParseEntry write_mem_cmd_desc = { | |
2006 | .handler = handle_write_mem, | |
2007 | .cmd = "M", | |
2008 | .cmd_startswith = 1, | |
2009 | .schema = "L,L:s0" | |
2010 | }; | |
2011 | cmd_parser = &write_mem_cmd_desc; | |
44520db1 | 2012 | } |
858693c6 | 2013 | break; |
56aebc89 | 2014 | case 'p': |
5d0e57bd JD |
2015 | { |
2016 | static const GdbCmdParseEntry get_reg_cmd_desc = { | |
2017 | .handler = handle_get_reg, | |
2018 | .cmd = "p", | |
2019 | .cmd_startswith = 1, | |
2020 | .schema = "L0" | |
2021 | }; | |
2022 | cmd_parser = &get_reg_cmd_desc; | |
56aebc89 PB |
2023 | } |
2024 | break; | |
2025 | case 'P': | |
62b3320b JD |
2026 | { |
2027 | static const GdbCmdParseEntry set_reg_cmd_desc = { | |
2028 | .handler = handle_set_reg, | |
2029 | .cmd = "P", | |
2030 | .cmd_startswith = 1, | |
2031 | .schema = "L?s0" | |
2032 | }; | |
2033 | cmd_parser = &set_reg_cmd_desc; | |
2034 | } | |
56aebc89 | 2035 | break; |
858693c6 | 2036 | case 'Z': |
77f6ce50 JD |
2037 | { |
2038 | static const GdbCmdParseEntry insert_bp_cmd_desc = { | |
2039 | .handler = handle_insert_bp, | |
2040 | .cmd = "Z", | |
2041 | .cmd_startswith = 1, | |
2042 | .schema = "l?L?L0" | |
2043 | }; | |
2044 | cmd_parser = &insert_bp_cmd_desc; | |
2045 | } | |
2046 | break; | |
858693c6 | 2047 | case 'z': |
77f6ce50 JD |
2048 | { |
2049 | static const GdbCmdParseEntry remove_bp_cmd_desc = { | |
2050 | .handler = handle_remove_bp, | |
2051 | .cmd = "z", | |
2052 | .cmd_startswith = 1, | |
2053 | .schema = "l?L?L0" | |
2054 | }; | |
2055 | cmd_parser = &remove_bp_cmd_desc; | |
2056 | } | |
858693c6 | 2057 | break; |
880a7578 | 2058 | case 'H': |
3a9651d6 JD |
2059 | { |
2060 | static const GdbCmdParseEntry set_thread_cmd_desc = { | |
2061 | .handler = handle_set_thread, | |
2062 | .cmd = "H", | |
2063 | .cmd_startswith = 1, | |
2064 | .schema = "o.t0" | |
2065 | }; | |
2066 | cmd_parser = &set_thread_cmd_desc; | |
880a7578 AL |
2067 | } |
2068 | break; | |
2069 | case 'T': | |
44ffded0 JD |
2070 | { |
2071 | static const GdbCmdParseEntry thread_alive_cmd_desc = { | |
2072 | .handler = handle_thread_alive, | |
2073 | .cmd = "T", | |
2074 | .cmd_startswith = 1, | |
2075 | .schema = "t0" | |
2076 | }; | |
2077 | cmd_parser = &thread_alive_cmd_desc; | |
1e9fa730 | 2078 | } |
880a7578 | 2079 | break; |
978efd6a | 2080 | case 'q': |
2704efad JD |
2081 | { |
2082 | static const GdbCmdParseEntry gen_query_cmd_desc = { | |
2083 | .handler = handle_gen_query, | |
2084 | .cmd = "q", | |
2085 | .cmd_startswith = 1, | |
2086 | .schema = "s0" | |
2087 | }; | |
2088 | cmd_parser = &gen_query_cmd_desc; | |
56aebc89 | 2089 | } |
2704efad JD |
2090 | break; |
2091 | case 'Q': | |
2092 | { | |
2093 | static const GdbCmdParseEntry gen_set_cmd_desc = { | |
2094 | .handler = handle_gen_set, | |
2095 | .cmd = "Q", | |
2096 | .cmd_startswith = 1, | |
2097 | .schema = "s0" | |
2098 | }; | |
2099 | cmd_parser = &gen_set_cmd_desc; | |
a3919386 | 2100 | } |
2704efad | 2101 | break; |
858693c6 | 2102 | default: |
858693c6 | 2103 | /* put empty packet */ |
36e067b2 | 2104 | gdb_put_packet(""); |
858693c6 FB |
2105 | break; |
2106 | } | |
3e2c1261 | 2107 | |
2bdec398 | 2108 | if (cmd_parser) { |
a346af3e | 2109 | run_cmd_parser(line_buf, cmd_parser); |
2bdec398 | 2110 | } |
3e2c1261 | 2111 | |
858693c6 FB |
2112 | return RS_IDLE; |
2113 | } | |
2114 | ||
64f6b346 | 2115 | void gdb_set_stop_cpu(CPUState *cpu) |
880a7578 | 2116 | { |
a346af3e | 2117 | GDBProcess *p = gdb_get_cpu_process(cpu); |
160d858d LM |
2118 | |
2119 | if (!p->attached) { | |
2120 | /* | |
2121 | * Having a stop CPU corresponding to a process that is not attached | |
2122 | * confuses GDB. So we ignore the request. | |
2123 | */ | |
2124 | return; | |
2125 | } | |
2126 | ||
8d98c445 AB |
2127 | gdbserver_state.c_cpu = cpu; |
2128 | gdbserver_state.g_cpu = cpu; | |
880a7578 AL |
2129 | } |
2130 | ||
a2d1ebaf PB |
2131 | /* Send a gdb syscall request. |
2132 | This accepts limited printf-style format specifiers, specifically: | |
a87295e8 PB |
2133 | %x - target_ulong argument printed in hex. |
2134 | %lx - 64-bit argument printed in hex. | |
2135 | %s - string pointer (target_ulong) and length (int) pair. */ | |
19239b39 | 2136 | void gdb_do_syscallv(gdb_syscall_complete_cb cb, const char *fmt, va_list va) |
a2d1ebaf | 2137 | { |
a2d1ebaf | 2138 | char *p; |
cdb432b2 | 2139 | char *p_end; |
a2d1ebaf | 2140 | target_ulong addr; |
a87295e8 | 2141 | uint64_t i64; |
a2d1ebaf | 2142 | |
ebf1b4cb | 2143 | if (!gdb_attached()) { |
a2d1ebaf | 2144 | return; |
a346af3e | 2145 | } |
8d98c445 AB |
2146 | |
2147 | gdbserver_state.current_syscall_cb = cb; | |
a2d1ebaf | 2148 | #ifndef CONFIG_USER_ONLY |
0461d5a6 | 2149 | vm_stop(RUN_STATE_DEBUG); |
a2d1ebaf | 2150 | #endif |
8d98c445 AB |
2151 | p = &gdbserver_state.syscall_buf[0]; |
2152 | p_end = &gdbserver_state.syscall_buf[sizeof(gdbserver_state.syscall_buf)]; | |
a2d1ebaf PB |
2153 | *(p++) = 'F'; |
2154 | while (*fmt) { | |
2155 | if (*fmt == '%') { | |
2156 | fmt++; | |
2157 | switch (*fmt++) { | |
2158 | case 'x': | |
2159 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 2160 | p += snprintf(p, p_end - p, TARGET_FMT_lx, addr); |
a2d1ebaf | 2161 | break; |
a87295e8 PB |
2162 | case 'l': |
2163 | if (*(fmt++) != 'x') | |
2164 | goto bad_format; | |
2165 | i64 = va_arg(va, uint64_t); | |
cdb432b2 | 2166 | p += snprintf(p, p_end - p, "%" PRIx64, i64); |
a87295e8 | 2167 | break; |
a2d1ebaf PB |
2168 | case 's': |
2169 | addr = va_arg(va, target_ulong); | |
cdb432b2 | 2170 | p += snprintf(p, p_end - p, TARGET_FMT_lx "/%x", |
363a37d5 | 2171 | addr, va_arg(va, int)); |
a2d1ebaf PB |
2172 | break; |
2173 | default: | |
a87295e8 | 2174 | bad_format: |
7ae6c571 ZY |
2175 | error_report("gdbstub: Bad syscall format string '%s'", |
2176 | fmt - 1); | |
a2d1ebaf PB |
2177 | break; |
2178 | } | |
2179 | } else { | |
2180 | *(p++) = *(fmt++); | |
2181 | } | |
2182 | } | |
8a93e02a | 2183 | *p = 0; |
a2d1ebaf | 2184 | #ifdef CONFIG_USER_ONLY |
36e067b2 | 2185 | gdb_put_packet(gdbserver_state.syscall_buf); |
4f710866 PM |
2186 | /* Return control to gdb for it to process the syscall request. |
2187 | * Since the protocol requires that gdb hands control back to us | |
2188 | * using a "here are the results" F packet, we don't need to check | |
2189 | * gdb_handlesig's return value (which is the signal to deliver if | |
2190 | * execution was resumed via a continue packet). | |
2191 | */ | |
8d98c445 | 2192 | gdb_handlesig(gdbserver_state.c_cpu, 0); |
a2d1ebaf | 2193 | #else |
cdb432b2 MI |
2194 | /* In this case wait to send the syscall packet until notification that |
2195 | the CPU has stopped. This must be done because if the packet is sent | |
2196 | now the reply from the syscall request could be received while the CPU | |
2197 | is still in the running state, which can cause packets to be dropped | |
2198 | and state transition 'T' packets to be sent while the syscall is still | |
2199 | being processed. */ | |
8d98c445 | 2200 | qemu_cpu_kick(gdbserver_state.c_cpu); |
a2d1ebaf PB |
2201 | #endif |
2202 | } | |
2203 | ||
19239b39 PM |
2204 | void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) |
2205 | { | |
2206 | va_list va; | |
2207 | ||
2208 | va_start(va, fmt); | |
2209 | gdb_do_syscallv(cb, fmt, va); | |
2210 | va_end(va); | |
2211 | } | |
2212 | ||
36e067b2 | 2213 | void gdb_read_byte(uint8_t ch) |
858693c6 | 2214 | { |
60fe76f3 | 2215 | uint8_t reply; |
858693c6 | 2216 | |
1fddef4b | 2217 | #ifndef CONFIG_USER_ONLY |
d116e813 | 2218 | if (gdbserver_state.last_packet->len) { |
4046d913 PB |
2219 | /* Waiting for a response to the last packet. If we see the start |
2220 | of a new command then abandon the previous response. */ | |
2221 | if (ch == '-') { | |
5c9522b3 | 2222 | trace_gdbstub_err_got_nack(); |
36e067b2 | 2223 | gdb_put_buffer(gdbserver_state.last_packet->data, |
d116e813 | 2224 | gdbserver_state.last_packet->len); |
118e2268 | 2225 | } else if (ch == '+') { |
5c9522b3 | 2226 | trace_gdbstub_io_got_ack(); |
118e2268 | 2227 | } else { |
33c846ef | 2228 | trace_gdbstub_io_got_unexpected(ch); |
4046d913 | 2229 | } |
118e2268 | 2230 | |
d116e813 DH |
2231 | if (ch == '+' || ch == '$') { |
2232 | g_byte_array_set_size(gdbserver_state.last_packet, 0); | |
2233 | } | |
4046d913 PB |
2234 | if (ch != '$') |
2235 | return; | |
2236 | } | |
1354869c | 2237 | if (runstate_is_running()) { |
858693c6 FB |
2238 | /* when the CPU is running, we cannot do anything except stop |
2239 | it when receiving a char */ | |
0461d5a6 | 2240 | vm_stop(RUN_STATE_PAUSED); |
5fafdf24 | 2241 | } else |
1fddef4b | 2242 | #endif |
41625033 | 2243 | { |
a346af3e | 2244 | switch(gdbserver_state.state) { |
858693c6 FB |
2245 | case RS_IDLE: |
2246 | if (ch == '$') { | |
4bf43122 | 2247 | /* start of command packet */ |
a346af3e AB |
2248 | gdbserver_state.line_buf_index = 0; |
2249 | gdbserver_state.line_sum = 0; | |
2250 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 | 2251 | } else { |
33c846ef | 2252 | trace_gdbstub_err_garbage(ch); |
c33a346e | 2253 | } |
b4608c04 | 2254 | break; |
858693c6 | 2255 | case RS_GETLINE: |
4bf43122 DG |
2256 | if (ch == '}') { |
2257 | /* start escape sequence */ | |
a346af3e AB |
2258 | gdbserver_state.state = RS_GETLINE_ESC; |
2259 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
2260 | } else if (ch == '*') { |
2261 | /* start run length encoding sequence */ | |
a346af3e AB |
2262 | gdbserver_state.state = RS_GETLINE_RLE; |
2263 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
2264 | } else if (ch == '#') { |
2265 | /* end of command, start of checksum*/ | |
a346af3e AB |
2266 | gdbserver_state.state = RS_CHKSUM1; |
2267 | } else if (gdbserver_state.line_buf_index >= sizeof(gdbserver_state.line_buf) - 1) { | |
5c9522b3 | 2268 | trace_gdbstub_err_overrun(); |
a346af3e | 2269 | gdbserver_state.state = RS_IDLE; |
4bf43122 DG |
2270 | } else { |
2271 | /* unescaped command character */ | |
a346af3e AB |
2272 | gdbserver_state.line_buf[gdbserver_state.line_buf_index++] = ch; |
2273 | gdbserver_state.line_sum += ch; | |
4bf43122 DG |
2274 | } |
2275 | break; | |
2276 | case RS_GETLINE_ESC: | |
858693c6 | 2277 | if (ch == '#') { |
4bf43122 | 2278 | /* unexpected end of command in escape sequence */ |
a346af3e AB |
2279 | gdbserver_state.state = RS_CHKSUM1; |
2280 | } else if (gdbserver_state.line_buf_index >= sizeof(gdbserver_state.line_buf) - 1) { | |
4bf43122 | 2281 | /* command buffer overrun */ |
5c9522b3 | 2282 | trace_gdbstub_err_overrun(); |
a346af3e | 2283 | gdbserver_state.state = RS_IDLE; |
4c3a88a2 | 2284 | } else { |
4bf43122 | 2285 | /* parse escaped character and leave escape state */ |
a346af3e AB |
2286 | gdbserver_state.line_buf[gdbserver_state.line_buf_index++] = ch ^ 0x20; |
2287 | gdbserver_state.line_sum += ch; | |
2288 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 DG |
2289 | } |
2290 | break; | |
2291 | case RS_GETLINE_RLE: | |
046aba16 MA |
2292 | /* |
2293 | * Run-length encoding is explained in "Debugging with GDB / | |
2294 | * Appendix E GDB Remote Serial Protocol / Overview". | |
2295 | */ | |
2296 | if (ch < ' ' || ch == '#' || ch == '$' || ch > 126) { | |
4bf43122 | 2297 | /* invalid RLE count encoding */ |
33c846ef | 2298 | trace_gdbstub_err_invalid_repeat(ch); |
a346af3e | 2299 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
2300 | } else { |
2301 | /* decode repeat length */ | |
33c846ef | 2302 | int repeat = ch - ' ' + 3; |
a346af3e | 2303 | if (gdbserver_state.line_buf_index + repeat >= sizeof(gdbserver_state.line_buf) - 1) { |
4bf43122 | 2304 | /* that many repeats would overrun the command buffer */ |
5c9522b3 | 2305 | trace_gdbstub_err_overrun(); |
a346af3e AB |
2306 | gdbserver_state.state = RS_IDLE; |
2307 | } else if (gdbserver_state.line_buf_index < 1) { | |
4bf43122 | 2308 | /* got a repeat but we have nothing to repeat */ |
5c9522b3 | 2309 | trace_gdbstub_err_invalid_rle(); |
a346af3e | 2310 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
2311 | } else { |
2312 | /* repeat the last character */ | |
a346af3e AB |
2313 | memset(gdbserver_state.line_buf + gdbserver_state.line_buf_index, |
2314 | gdbserver_state.line_buf[gdbserver_state.line_buf_index - 1], repeat); | |
2315 | gdbserver_state.line_buf_index += repeat; | |
2316 | gdbserver_state.line_sum += ch; | |
2317 | gdbserver_state.state = RS_GETLINE; | |
4bf43122 | 2318 | } |
4c3a88a2 FB |
2319 | } |
2320 | break; | |
858693c6 | 2321 | case RS_CHKSUM1: |
4bf43122 DG |
2322 | /* get high hex digit of checksum */ |
2323 | if (!isxdigit(ch)) { | |
33c846ef | 2324 | trace_gdbstub_err_checksum_invalid(ch); |
a346af3e | 2325 | gdbserver_state.state = RS_GETLINE; |
4bf43122 DG |
2326 | break; |
2327 | } | |
a346af3e AB |
2328 | gdbserver_state.line_buf[gdbserver_state.line_buf_index] = '\0'; |
2329 | gdbserver_state.line_csum = fromhex(ch) << 4; | |
2330 | gdbserver_state.state = RS_CHKSUM2; | |
858693c6 FB |
2331 | break; |
2332 | case RS_CHKSUM2: | |
4bf43122 DG |
2333 | /* get low hex digit of checksum */ |
2334 | if (!isxdigit(ch)) { | |
33c846ef | 2335 | trace_gdbstub_err_checksum_invalid(ch); |
a346af3e | 2336 | gdbserver_state.state = RS_GETLINE; |
4bf43122 | 2337 | break; |
858693c6 | 2338 | } |
a346af3e | 2339 | gdbserver_state.line_csum |= fromhex(ch); |
4bf43122 | 2340 | |
a346af3e AB |
2341 | if (gdbserver_state.line_csum != (gdbserver_state.line_sum & 0xff)) { |
2342 | trace_gdbstub_err_checksum_incorrect(gdbserver_state.line_sum, gdbserver_state.line_csum); | |
4bf43122 | 2343 | /* send NAK reply */ |
60fe76f3 | 2344 | reply = '-'; |
36e067b2 | 2345 | gdb_put_buffer(&reply, 1); |
a346af3e | 2346 | gdbserver_state.state = RS_IDLE; |
4c3a88a2 | 2347 | } else { |
4bf43122 | 2348 | /* send ACK reply */ |
60fe76f3 | 2349 | reply = '+'; |
36e067b2 | 2350 | gdb_put_buffer(&reply, 1); |
a346af3e | 2351 | gdbserver_state.state = gdb_handle_packet(gdbserver_state.line_buf); |
4c3a88a2 FB |
2352 | } |
2353 | break; | |
a2d1ebaf PB |
2354 | default: |
2355 | abort(); | |
858693c6 FB |
2356 | } |
2357 | } | |
2358 | } | |
2359 | ||
8f468636 LM |
2360 | /* |
2361 | * Create the process that will contain all the "orphan" CPUs (that are not | |
2362 | * part of a CPU cluster). Note that if this process contains no CPUs, it won't | |
2363 | * be attachable and thus will be invisible to the user. | |
2364 | */ | |
36e067b2 | 2365 | void gdb_create_default_process(GDBState *s) |
8f468636 LM |
2366 | { |
2367 | GDBProcess *process; | |
2368 | int max_pid = 0; | |
2369 | ||
a346af3e | 2370 | if (gdbserver_state.process_num) { |
8f468636 LM |
2371 | max_pid = s->processes[s->process_num - 1].pid; |
2372 | } | |
2373 | ||
2374 | s->processes = g_renew(GDBProcess, s->processes, ++s->process_num); | |
2375 | process = &s->processes[s->process_num - 1]; | |
2376 | ||
2377 | /* We need an available PID slot for this process */ | |
2378 | assert(max_pid < UINT32_MAX); | |
2379 | ||
2380 | process->pid = max_pid + 1; | |
2381 | process->attached = false; | |
c145eeae | 2382 | process->target_xml[0] = '\0'; |
8f468636 LM |
2383 | } |
2384 |