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kernel32: Implement GetUserDefaultGeoName().
[wine/zf.git] / programs / winedbg / gdbproxy.c
blob3c1b3e85df8a4448fe7d1b946849be1e4dd99c5c
1 /*
2 * A Win32 based proxy implementing the GBD remote protocol.
3 * This makes it possible to debug Wine (and any "emulated"
4 * program) under Linux using GDB.
5 *
6 * Copyright (c) Eric Pouech 2002-2004
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 */
22
23 /* Protocol specification can be found here:
24 * http://sources.redhat.com/gdb/onlinedocs/gdb/Maintenance-Commands.html
25 */
26
27 #include "config.h"
28 #include "wine/port.h"
29
30 #include <assert.h>
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <signal.h>
34 #include <stdarg.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #ifdef HAVE_SYS_POLL_H
38 # include <sys/poll.h>
39 #endif
40 #ifdef HAVE_SYS_WAIT_H
41 # include <sys/wait.h>
42 #endif
43 #ifdef HAVE_SYS_SOCKET_H
44 # include <sys/socket.h>
45 #endif
46 #ifdef HAVE_NETINET_IN_H
47 # include <netinet/in.h>
48 #endif
49 #ifdef HAVE_NETINET_TCP_H
50 # include <netinet/tcp.h>
51 #endif
52 #ifdef HAVE_UNISTD_H
53 # include <unistd.h>
54 #endif
55
56 /* if we don't have poll support on this system
57 * we won't provide gdb proxy support here...
58 */
59 #ifdef HAVE_POLL
60
61 #include "debugger.h"
62
63 #include "windef.h"
64 #include "winbase.h"
65 #include "tlhelp32.h"
66 #include "wine/exception.h"
67 #include "wine/debug.h"
68
69 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
70
71 struct gdb_xpoint
72 {
73 struct list entry;
74 int pid;
75 int tid;
76 enum be_xpoint_type type;
77 void *addr;
78 int size;
79 unsigned long value;
80 };
81
82 struct gdb_context
83 {
84 /* gdb information */
85 int sock;
86 /* incoming buffer */
87 char* in_buf;
88 int in_buf_alloc;
89 int in_len;
90 /* split into individual packet */
91 char* in_packet;
92 int in_packet_len;
93 /* outgoing buffer */
94 char* out_buf;
95 int out_buf_alloc;
96 int out_len;
97 int out_curr_packet;
98 /* generic GDB thread information */
99 int exec_tid; /* tid used in step & continue */
100 int other_tid; /* tid to be used in any other operation */
101 struct list xpoint_list;
102 /* current Win32 trap env */
103 DEBUG_EVENT de;
104 DWORD de_reply;
105 /* Win32 information */
106 struct dbg_process* process;
107 /* Unix environment */
108 unsigned long wine_segs[3]; /* load addresses of the ELF wine exec segments (text, bss and data) */
109 BOOL no_ack_mode;
110 };
111
112 static void gdbctx_delete_xpoint(struct gdb_context *gdbctx, struct dbg_thread *thread,
113 dbg_ctx_t *ctx, struct gdb_xpoint *x)
114 {
115 struct dbg_process *process = thread->process;
116 struct backend_cpu *cpu = process->be_cpu;
117
118 if (!cpu->remove_Xpoint(process->handle, process->process_io, ctx, x->type, x->addr, x->value, x->size))
119 ERR("%04x:%04x: Couldn't remove breakpoint at:%p/%x type:%d\n", process->pid, thread->tid, x->addr, x->size, x->type);
120
121 list_remove(&x->entry);
122 HeapFree(GetProcessHeap(), 0, x);
123 }
124
125 static void gdbctx_insert_xpoint(struct gdb_context *gdbctx, struct dbg_thread *thread,
126 dbg_ctx_t *ctx, enum be_xpoint_type type, void *addr, int size)
127 {
128 struct dbg_process *process = thread->process;
129 struct backend_cpu *cpu = process->be_cpu;
130 struct gdb_xpoint *x;
131 unsigned long value;
132
133 if (!cpu->insert_Xpoint(process->handle, process->process_io, ctx, type, addr, &value, size))
134 {
135 ERR("%04x:%04x: Couldn't insert breakpoint at:%p/%x type:%d\n", process->pid, thread->tid, addr, size, type);
136 return;
137 }
138
139 if (!(x = HeapAlloc(GetProcessHeap(), 0, sizeof(struct gdb_xpoint))))
140 {
141 ERR("%04x:%04x: Couldn't allocate memory for breakpoint at:%p/%x type:%d\n", process->pid, thread->tid, addr, size, type);
142 return;
143 }
144
145 x->pid = process->pid;
146 x->tid = thread->tid;
147 x->type = type;
148 x->addr = addr;
149 x->size = size;
150 x->value = value;
151 list_add_head(&gdbctx->xpoint_list, &x->entry);
152 }
153
154 static struct gdb_xpoint *gdb_find_xpoint(struct gdb_context *gdbctx, struct dbg_thread *thread,
155 enum be_xpoint_type type, void *addr, int size)
156 {
157 struct gdb_xpoint *x;
158
159 LIST_FOR_EACH_ENTRY(x, &gdbctx->xpoint_list, struct gdb_xpoint, entry)
160 {
161 if (thread && (x->pid != thread->process->pid || x->tid != thread->tid))
162 continue;
163 if (x->type == type && x->addr == addr && x->size == size)
164 return x;
165 }
166
167 return NULL;
168 }
169
170 static BOOL tgt_process_gdbproxy_read(HANDLE hProcess, const void* addr,
171 void* buffer, SIZE_T len, SIZE_T* rlen)
172 {
173 return ReadProcessMemory( hProcess, addr, buffer, len, rlen );
174 }
175
176 static BOOL tgt_process_gdbproxy_write(HANDLE hProcess, void* addr,
177 const void* buffer, SIZE_T len, SIZE_T* wlen)
178 {
179 return WriteProcessMemory( hProcess, addr, buffer, len, wlen );
180 }
181
182 static struct be_process_io be_process_gdbproxy_io =
183 {
184 NULL, /* we shouldn't use close_process() in gdbproxy */
185 tgt_process_gdbproxy_read,
186 tgt_process_gdbproxy_write
187 };
188
189 /* =============================================== *
190 * B A S I C M A N I P U L A T I O N S *
191 * =============================================== *
192 */
193
194 static inline int hex_from0(char ch)
195 {
196 if (ch >= '0' && ch <= '9') return ch - '0';
197 if (ch >= 'A' && ch <= 'F') return ch - 'A' + 10;
198 if (ch >= 'a' && ch <= 'f') return ch - 'a' + 10;
199
200 assert(0);
201 return 0;
202 }
203
204 static inline unsigned char hex_to0(int x)
205 {
206 assert(x >= 0 && x < 16);
207 return "0123456789abcdef"[x];
208 }
209
210 static void hex_from(void* dst, const char* src, size_t len)
211 {
212 unsigned char *p = dst;
213 while (len--)
214 {
215 *p++ = (hex_from0(src[0]) << 4) | hex_from0(src[1]);
216 src += 2;
217 }
218 }
219
220 static void hex_to(char* dst, const void* src, size_t len)
221 {
222 const unsigned char *p = src;
223 while (len--)
224 {
225 *dst++ = hex_to0(*p >> 4);
226 *dst++ = hex_to0(*p & 0x0F);
227 p++;
228 }
229 }
230
231 static unsigned char checksum(const char* ptr, int len)
232 {
233 unsigned cksum = 0;
234
235 while (len-- > 0)
236 cksum += (unsigned char)*ptr++;
237 return cksum;
238 }
239
240 static inline void* cpu_register_ptr(struct gdb_context *gdbctx,
241 dbg_ctx_t *ctx, unsigned idx)
242 {
243 assert(idx < gdbctx->process->be_cpu->gdb_num_regs);
244 return (char*)ctx + gdbctx->process->be_cpu->gdb_register_map[idx].offset;
245 }
246
247 static inline DWORD64 cpu_register(struct gdb_context *gdbctx,
248 dbg_ctx_t *ctx, unsigned idx)
249 {
250 switch (gdbctx->process->be_cpu->gdb_register_map[idx].length)
251 {
252 case 1: return *(BYTE*)cpu_register_ptr(gdbctx, ctx, idx);
253 case 2: return *(WORD*)cpu_register_ptr(gdbctx, ctx, idx);
254 case 4: return *(DWORD*)cpu_register_ptr(gdbctx, ctx, idx);
255 case 8: return *(DWORD64*)cpu_register_ptr(gdbctx, ctx, idx);
256 default:
257 ERR("got unexpected size: %u\n",
258 (unsigned)gdbctx->process->be_cpu->gdb_register_map[idx].length);
259 assert(0);
260 return 0;
261 }
262 }
263
264 static inline void cpu_register_hex_from(struct gdb_context *gdbctx,
265 dbg_ctx_t* ctx, unsigned idx, const char **phex)
266 {
267 const struct gdb_register *cpu_register_map = gdbctx->process->be_cpu->gdb_register_map;
268 hex_from(cpu_register_ptr(gdbctx, ctx, idx), *phex, cpu_register_map[idx].length);
269 }
270
271 /* =============================================== *
272 * W I N 3 2 D E B U G I N T E R F A C E *
273 * =============================================== *
274 */
275
276 static struct dbg_thread* dbg_thread_from_tid(struct gdb_context* gdbctx, int tid)
277 {
278 struct dbg_process *process = gdbctx->process;
279 struct dbg_thread *thread;
280
281 if (!process) return NULL;
282
283 if (tid == 0) tid = gdbctx->de.dwThreadId;
284 LIST_FOR_EACH_ENTRY(thread, &process->threads, struct dbg_thread, entry)
285 {
286 if (tid > 0 && thread->tid != tid) continue;
287 return thread;
288 }
289
290 return NULL;
291 }
292
293 static void dbg_thread_set_single_step(struct dbg_thread *thread, BOOL enable)
294 {
295 struct backend_cpu *backend;
296 dbg_ctx_t ctx;
297
298 if (!thread) return;
299 if (!thread->process) return;
300 if (!(backend = thread->process->be_cpu)) return;
301
302 if (!backend->get_context(thread->handle, &ctx))
303 {
304 ERR("get_context failed for thread %04x:%04x\n", thread->process->pid, thread->tid);
305 return;
306 }
307 backend->single_step(&ctx, enable);
308 if (!backend->set_context(thread->handle, &ctx))
309 ERR("set_context failed for thread %04x:%04x\n", thread->process->pid, thread->tid);
310 }
311
312 static unsigned char signal_from_debug_event(DEBUG_EVENT* de)
313 {
314 DWORD ec;
315
316 if (de->dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT)
317 return SIGTERM;
318 if (de->dwDebugEventCode != EXCEPTION_DEBUG_EVENT)
319 return SIGTRAP;
320
321 ec = de->u.Exception.ExceptionRecord.ExceptionCode;
322 switch (ec)
323 {
324 case EXCEPTION_ACCESS_VIOLATION:
325 case EXCEPTION_PRIV_INSTRUCTION:
326 case EXCEPTION_STACK_OVERFLOW:
327 case EXCEPTION_GUARD_PAGE:
328 return SIGSEGV;
329 case EXCEPTION_DATATYPE_MISALIGNMENT:
330 return SIGBUS;
331 case EXCEPTION_SINGLE_STEP:
332 case EXCEPTION_BREAKPOINT:
333 return SIGTRAP;
334 case EXCEPTION_FLT_DENORMAL_OPERAND:
335 case EXCEPTION_FLT_DIVIDE_BY_ZERO:
336 case EXCEPTION_FLT_INEXACT_RESULT:
337 case EXCEPTION_FLT_INVALID_OPERATION:
338 case EXCEPTION_FLT_OVERFLOW:
339 case EXCEPTION_FLT_STACK_CHECK:
340 case EXCEPTION_FLT_UNDERFLOW:
341 return SIGFPE;
342 case EXCEPTION_INT_DIVIDE_BY_ZERO:
343 case EXCEPTION_INT_OVERFLOW:
344 return SIGFPE;
345 case EXCEPTION_ILLEGAL_INSTRUCTION:
346 return SIGILL;
347 case CONTROL_C_EXIT:
348 return SIGINT;
349 case STATUS_POSSIBLE_DEADLOCK:
350 return SIGALRM;
351 /* should not be here */
352 case EXCEPTION_INVALID_HANDLE:
353 case EXCEPTION_WINE_NAME_THREAD:
354 return SIGTRAP;
355 default:
356 ERR("Unknown exception code 0x%08x\n", ec);
357 return SIGABRT;
358 }
359 }
360
361 static BOOL handle_exception(struct gdb_context* gdbctx, EXCEPTION_DEBUG_INFO* exc)
362 {
363 EXCEPTION_RECORD* rec = &exc->ExceptionRecord;
364
365 switch (rec->ExceptionCode)
366 {
367 case EXCEPTION_WINE_NAME_THREAD:
368 {
369 const THREADNAME_INFO *threadname = (const THREADNAME_INFO *)rec->ExceptionInformation;
370 struct dbg_thread *thread;
371 char name[9];
372 SIZE_T read;
373
374 if (threadname->dwThreadID == -1)
375 thread = dbg_get_thread(gdbctx->process, gdbctx->de.dwThreadId);
376 else
377 thread = dbg_get_thread(gdbctx->process, threadname->dwThreadID);
378 if (thread)
379 {
380 if (gdbctx->process->process_io->read( gdbctx->process->handle,
381 threadname->szName, name, sizeof(name), &read) && read == sizeof(name))
382 {
383 fprintf(stderr, "Thread ID=%04x renamed to \"%.9s\"\n",
384 threadname->dwThreadID, name);
385 }
386 }
387 else
388 ERR("Cannot set name of thread %04x\n", threadname->dwThreadID);
389 return TRUE;
390 }
391 case EXCEPTION_INVALID_HANDLE:
392 return TRUE;
393 default:
394 return FALSE;
395 }
396 }
397
398 static BOOL handle_debug_event(struct gdb_context* gdbctx)
399 {
400 DEBUG_EVENT *de = &gdbctx->de;
401 struct dbg_thread *thread;
402
403 union {
404 char bufferA[256];
405 WCHAR buffer[256];
406 } u;
407
408 gdbctx->exec_tid = de->dwThreadId;
409 gdbctx->other_tid = de->dwThreadId;
410 gdbctx->de_reply = DBG_REPLY_LATER;
411
412 switch (de->dwDebugEventCode)
413 {
414 case CREATE_PROCESS_DEBUG_EVENT:
415 gdbctx->process = dbg_add_process(&be_process_gdbproxy_io, de->dwProcessId,
416 de->u.CreateProcessInfo.hProcess);
417 if (!gdbctx->process)
418 return TRUE;
419
420 memory_get_string_indirect(gdbctx->process,
421 de->u.CreateProcessInfo.lpImageName,
422 de->u.CreateProcessInfo.fUnicode,
423 u.buffer, ARRAY_SIZE(u.buffer));
424 dbg_set_process_name(gdbctx->process, u.buffer);
425
426 fprintf(stderr, "%04x:%04x: create process '%s'/%p @%p (%u<%u>)\n",
427 de->dwProcessId, de->dwThreadId,
428 dbg_W2A(u.buffer, -1),
429 de->u.CreateProcessInfo.lpImageName,
430 de->u.CreateProcessInfo.lpStartAddress,
431 de->u.CreateProcessInfo.dwDebugInfoFileOffset,
432 de->u.CreateProcessInfo.nDebugInfoSize);
433
434 /* de->u.CreateProcessInfo.lpStartAddress; */
435 if (!dbg_init(gdbctx->process->handle, u.buffer, TRUE))
436 ERR("Couldn't initiate DbgHelp\n");
437
438 fprintf(stderr, "%04x:%04x: create thread I @%p\n", de->dwProcessId,
439 de->dwThreadId, de->u.CreateProcessInfo.lpStartAddress);
440
441 dbg_add_thread(gdbctx->process, de->dwThreadId,
442 de->u.CreateProcessInfo.hThread,
443 de->u.CreateProcessInfo.lpThreadLocalBase);
444 return TRUE;
445
446 case LOAD_DLL_DEBUG_EVENT:
447 memory_get_string_indirect(gdbctx->process,
448 de->u.LoadDll.lpImageName,
449 de->u.LoadDll.fUnicode,
450 u.buffer, ARRAY_SIZE(u.buffer));
451 fprintf(stderr, "%04x:%04x: loads DLL %s @%p (%u<%u>)\n",
452 de->dwProcessId, de->dwThreadId,
453 dbg_W2A(u.buffer, -1),
454 de->u.LoadDll.lpBaseOfDll,
455 de->u.LoadDll.dwDebugInfoFileOffset,
456 de->u.LoadDll.nDebugInfoSize);
457 dbg_load_module(gdbctx->process->handle, de->u.LoadDll.hFile, u.buffer,
458 (DWORD_PTR)de->u.LoadDll.lpBaseOfDll, 0);
459 return TRUE;
460
461 case UNLOAD_DLL_DEBUG_EVENT:
462 fprintf(stderr, "%08x:%08x: unload DLL @%p\n",
463 de->dwProcessId, de->dwThreadId, de->u.UnloadDll.lpBaseOfDll);
464 SymUnloadModule(gdbctx->process->handle,
465 (DWORD_PTR)de->u.UnloadDll.lpBaseOfDll);
466 return TRUE;
467
468 case EXCEPTION_DEBUG_EVENT:
469 TRACE("%08x:%08x: exception code=0x%08x\n", de->dwProcessId,
470 de->dwThreadId, de->u.Exception.ExceptionRecord.ExceptionCode);
471
472 if (handle_exception(gdbctx, &de->u.Exception))
473 return TRUE;
474 break;
475
476 case CREATE_THREAD_DEBUG_EVENT:
477 fprintf(stderr, "%08x:%08x: create thread D @%p\n", de->dwProcessId,
478 de->dwThreadId, de->u.CreateThread.lpStartAddress);
479
480 dbg_add_thread(gdbctx->process,
481 de->dwThreadId,
482 de->u.CreateThread.hThread,
483 de->u.CreateThread.lpThreadLocalBase);
484 return TRUE;
485
486 case EXIT_THREAD_DEBUG_EVENT:
487 fprintf(stderr, "%08x:%08x: exit thread (%u)\n",
488 de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
489 if ((thread = dbg_get_thread(gdbctx->process, de->dwThreadId)))
490 dbg_del_thread(thread);
491 return TRUE;
492
493 case EXIT_PROCESS_DEBUG_EVENT:
494 fprintf(stderr, "%08x:%08x: exit process (%u)\n",
495 de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
496
497 dbg_del_process(gdbctx->process);
498 gdbctx->process = NULL;
499 return FALSE;
500
501 case OUTPUT_DEBUG_STRING_EVENT:
502 memory_get_string(gdbctx->process,
503 de->u.DebugString.lpDebugStringData, TRUE,
504 de->u.DebugString.fUnicode, u.bufferA, sizeof(u.bufferA));
505 fprintf(stderr, "%08x:%08x: output debug string (%s)\n",
506 de->dwProcessId, de->dwThreadId, debugstr_a(u.bufferA));
507 return TRUE;
508
509 case RIP_EVENT:
510 fprintf(stderr, "%08x:%08x: rip error=%u type=%u\n", de->dwProcessId,
511 de->dwThreadId, de->u.RipInfo.dwError, de->u.RipInfo.dwType);
512 return TRUE;
513
514 default:
515 FIXME("%08x:%08x: unknown event (%u)\n",
516 de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
517 }
518
519 LIST_FOR_EACH_ENTRY(thread, &gdbctx->process->threads, struct dbg_thread, entry)
520 {
521 if (!thread->suspended) SuspendThread(thread->handle);
522 thread->suspended = TRUE;
523 }
524
525 return FALSE;
526 }
527
528 static void handle_step_or_continue(struct gdb_context* gdbctx, int tid, BOOL step, int sig)
529 {
530 struct dbg_process *process = gdbctx->process;
531 struct dbg_thread *thread;
532
533 if (tid == 0) tid = gdbctx->de.dwThreadId;
534 LIST_FOR_EACH_ENTRY(thread, &process->threads, struct dbg_thread, entry)
535 {
536 if (tid != -1 && thread->tid != tid) continue;
537 if (!thread->suspended) continue;
538 thread->suspended = FALSE;
539
540 if (process->pid == gdbctx->de.dwProcessId && thread->tid == gdbctx->de.dwThreadId)
541 gdbctx->de_reply = (sig == -1 ? DBG_CONTINUE : DBG_EXCEPTION_NOT_HANDLED);
542
543 dbg_thread_set_single_step(thread, step);
544 ResumeThread(thread->handle);
545 }
546 }
547
548 static BOOL check_for_interrupt(struct gdb_context* gdbctx)
549 {
550 struct pollfd pollfd;
551 int ret;
552 char pkt;
553
554 pollfd.fd = gdbctx->sock;
555 pollfd.events = POLLIN;
556 pollfd.revents = 0;
557
558 if ((ret = poll(&pollfd, 1, 0)) == 1) {
559 ret = read(gdbctx->sock, &pkt, 1);
560 if (ret != 1) {
561 ERR("read failed\n");
562 return FALSE;
563 }
564 if (pkt != '\003') {
565 ERR("Unexpected break packet %#02x\n", pkt);
566 return FALSE;
567 }
568 return TRUE;
569 } else if (ret == -1) {
570 ERR("poll failed\n");
571 }
572 return FALSE;
573 }
574
575 static void wait_for_debuggee(struct gdb_context* gdbctx)
576 {
577 if (gdbctx->de.dwDebugEventCode)
578 ContinueDebugEvent(gdbctx->de.dwProcessId, gdbctx->de.dwThreadId, gdbctx->de_reply);
579
580 for (;;)
581 {
582 if (!WaitForDebugEvent(&gdbctx->de, 10))
583 {
584 if (GetLastError() == ERROR_SEM_TIMEOUT)
585 {
586 if (check_for_interrupt(gdbctx)) {
587 if (!DebugBreakProcess(gdbctx->process->handle)) {
588 ERR("Failed to break into debuggee\n");
589 break;
590 }
591 WaitForDebugEvent(&gdbctx->de, INFINITE);
592 } else {
593 continue;
594 }
595 } else {
596 break;
597 }
598 }
599 if (!handle_debug_event(gdbctx))
600 break;
601 ContinueDebugEvent(gdbctx->de.dwProcessId, gdbctx->de.dwThreadId, DBG_CONTINUE);
602 }
603 }
604
605 static void detach_debuggee(struct gdb_context* gdbctx, BOOL kill)
606 {
607 handle_step_or_continue(gdbctx, -1, FALSE, -1);
608
609 if (gdbctx->de.dwDebugEventCode)
610 ContinueDebugEvent(gdbctx->de.dwProcessId, gdbctx->de.dwThreadId, DBG_CONTINUE);
611
612 if (!kill)
613 DebugActiveProcessStop(gdbctx->process->pid);
614 dbg_del_process(gdbctx->process);
615 gdbctx->process = NULL;
616 }
617
618 static void get_process_info(struct gdb_context* gdbctx, char* buffer, size_t len)
619 {
620 DWORD status;
621
622 if (!GetExitCodeProcess(gdbctx->process->handle, &status))
623 {
624 strcpy(buffer, "Unknown process");
625 return;
626 }
627 if (status == STILL_ACTIVE)
628 {
629 strcpy(buffer, "Running");
630 }
631 else
632 snprintf(buffer, len, "Terminated (%u)", status);
633
634 switch (GetPriorityClass(gdbctx->process->handle))
635 {
636 case 0: break;
637 #ifdef ABOVE_NORMAL_PRIORITY_CLASS
638 case ABOVE_NORMAL_PRIORITY_CLASS: strcat(buffer, ", above normal priority"); break;
639 #endif
640 #ifdef BELOW_NORMAL_PRIORITY_CLASS
641 case BELOW_NORMAL_PRIORITY_CLASS: strcat(buffer, ", below normal priority"); break;
642 #endif
643 case HIGH_PRIORITY_CLASS: strcat(buffer, ", high priority"); break;
644 case IDLE_PRIORITY_CLASS: strcat(buffer, ", idle priority"); break;
645 case NORMAL_PRIORITY_CLASS: strcat(buffer, ", normal priority"); break;
646 case REALTIME_PRIORITY_CLASS: strcat(buffer, ", realtime priority"); break;
647 }
648 strcat(buffer, "\n");
649 }
650
651 static void get_thread_info(struct gdb_context* gdbctx, unsigned tid,
652 char* buffer, size_t len)
653 {
654 struct dbg_thread* thd;
655 DWORD status;
656 int prio;
657
658 /* FIXME: use the size of buffer */
659 thd = dbg_get_thread(gdbctx->process, tid);
660 if (thd == NULL)
661 {
662 strcpy(buffer, "No information");
663 return;
664 }
665 if (GetExitCodeThread(thd->handle, &status))
666 {
667 if (status == STILL_ACTIVE)
668 {
669 /* FIXME: this is a bit brutal... some nicer way shall be found */
670 switch (status = SuspendThread(thd->handle))
671 {
672 case -1: break;
673 case 0: strcpy(buffer, "Running"); break;
674 default: snprintf(buffer, len, "Suspended (%u)", status - 1);
675 }
676 ResumeThread(thd->handle);
677 }
678 else
679 snprintf(buffer, len, "Terminated (exit code = %u)", status);
680 }
681 else
682 {
683 strcpy(buffer, "Unknown threadID");
684 }
685 switch (prio = GetThreadPriority(thd->handle))
686 {
687 case THREAD_PRIORITY_ERROR_RETURN: break;
688 case THREAD_PRIORITY_ABOVE_NORMAL: strcat(buffer, ", priority +1 above normal"); break;
689 case THREAD_PRIORITY_BELOW_NORMAL: strcat(buffer, ", priority -1 below normal"); break;
690 case THREAD_PRIORITY_HIGHEST: strcat(buffer, ", priority +2 above normal"); break;
691 case THREAD_PRIORITY_LOWEST: strcat(buffer, ", priority -2 below normal"); break;
692 case THREAD_PRIORITY_IDLE: strcat(buffer, ", priority idle"); break;
693 case THREAD_PRIORITY_NORMAL: strcat(buffer, ", priority normal"); break;
694 case THREAD_PRIORITY_TIME_CRITICAL: strcat(buffer, ", priority time-critical"); break;
695 default: snprintf(buffer + strlen(buffer), len - strlen(buffer), ", priority = %d", prio);
696 }
697 assert(strlen(buffer) < len);
698 }
699
700 /* =============================================== *
701 * P A C K E T U T I L S *
702 * =============================================== *
703 */
704
705 enum packet_return {packet_error = 0x00, packet_ok = 0x01, packet_done = 0x02,
706 packet_last_f = 0x80};
707
708 static char* packet_realloc(char* buf, int size)
709 {
710 if (!buf)
711 return HeapAlloc(GetProcessHeap(), 0, size);
712 return HeapReAlloc(GetProcessHeap(), 0, buf, size);
713
714 }
715
716 static void packet_reply_grow(struct gdb_context* gdbctx, size_t size)
717 {
718 if (gdbctx->out_buf_alloc < gdbctx->out_len + size)
719 {
720 gdbctx->out_buf_alloc = ((gdbctx->out_len + size) / 32 + 1) * 32;
721 gdbctx->out_buf = packet_realloc(gdbctx->out_buf, gdbctx->out_buf_alloc);
722 }
723 }
724
725 static void packet_reply_hex_to(struct gdb_context* gdbctx, const void* src, int len)
726 {
727 packet_reply_grow(gdbctx, len * 2);
728 hex_to(&gdbctx->out_buf[gdbctx->out_len], src, len);
729 gdbctx->out_len += len * 2;
730 }
731
732 static inline void packet_reply_hex_to_str(struct gdb_context* gdbctx, const char* src)
733 {
734 packet_reply_hex_to(gdbctx, src, strlen(src));
735 }
736
737 static void packet_reply_val(struct gdb_context* gdbctx, unsigned long val, int len)
738 {
739 int i, shift;
740
741 shift = (len - 1) * 8;
742 packet_reply_grow(gdbctx, len * 2);
743 for (i = 0; i < len; i++, shift -= 8)
744 {
745 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> (shift + 4)) & 0x0F);
746 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> shift ) & 0x0F);
747 }
748 }
749
750 static inline void packet_reply_add(struct gdb_context* gdbctx, const char* str)
751 {
752 int len = strlen(str);
753 packet_reply_grow(gdbctx, len);
754 memcpy(&gdbctx->out_buf[gdbctx->out_len], str, len);
755 gdbctx->out_len += len;
756 }
757
758 static void packet_reply_open(struct gdb_context* gdbctx)
759 {
760 assert(gdbctx->out_curr_packet == -1);
761 packet_reply_add(gdbctx, "$");
762 gdbctx->out_curr_packet = gdbctx->out_len;
763 }
764
765 static void packet_reply_close(struct gdb_context* gdbctx)
766 {
767 unsigned char cksum;
768 int plen;
769
770 plen = gdbctx->out_len - gdbctx->out_curr_packet;
771 packet_reply_add(gdbctx, "#");
772 cksum = checksum(&gdbctx->out_buf[gdbctx->out_curr_packet], plen);
773 packet_reply_hex_to(gdbctx, &cksum, 1);
774 gdbctx->out_curr_packet = -1;
775 }
776
777 static void packet_reply_open_xfer(struct gdb_context* gdbctx)
778 {
779 packet_reply_open(gdbctx);
780 packet_reply_add(gdbctx, "m");
781 }
782
783 static void packet_reply_close_xfer(struct gdb_context* gdbctx, int off, int len)
784 {
785 int begin = gdbctx->out_curr_packet + 1;
786 int plen;
787
788 if (begin + off < gdbctx->out_len)
789 {
790 gdbctx->out_len -= off;
791 memmove(gdbctx->out_buf + begin, gdbctx->out_buf + begin + off, gdbctx->out_len);
792 }
793 else
794 {
795 gdbctx->out_buf[gdbctx->out_curr_packet] = 'l';
796 gdbctx->out_len = gdbctx->out_curr_packet + 1;
797 }
798
799 plen = gdbctx->out_len - begin;
800 if (len >= 0 && plen > len) gdbctx->out_len -= (plen - len);
801 else gdbctx->out_buf[gdbctx->out_curr_packet] = 'l';
802
803 packet_reply_close(gdbctx);
804 }
805
806 static enum packet_return packet_reply(struct gdb_context* gdbctx, const char* packet)
807 {
808 packet_reply_open(gdbctx);
809
810 assert(strchr(packet, '$') == NULL && strchr(packet, '#') == NULL);
811
812 packet_reply_add(gdbctx, packet);
813
814 packet_reply_close(gdbctx);
815
816 return packet_done;
817 }
818
819 static enum packet_return packet_reply_error(struct gdb_context* gdbctx, int error)
820 {
821 packet_reply_open(gdbctx);
822
823 packet_reply_add(gdbctx, "E");
824 packet_reply_val(gdbctx, error, 1);
825
826 packet_reply_close(gdbctx);
827
828 return packet_done;
829 }
830
831 static inline void packet_reply_register_hex_to(struct gdb_context* gdbctx, dbg_ctx_t* ctx, unsigned idx)
832 {
833 const struct gdb_register *cpu_register_map = gdbctx->process->be_cpu->gdb_register_map;
834 packet_reply_hex_to(gdbctx, cpu_register_ptr(gdbctx, ctx, idx), cpu_register_map[idx].length);
835 }
836
837 /* =============================================== *
838 * P A C K E T H A N D L E R S *
839 * =============================================== *
840 */
841
842 static void packet_reply_status_xpoints(struct gdb_context* gdbctx, struct dbg_thread *thread,
843 dbg_ctx_t *ctx)
844 {
845 struct dbg_process *process = thread->process;
846 struct backend_cpu *cpu = process->be_cpu;
847 struct gdb_xpoint *x;
848
849 LIST_FOR_EACH_ENTRY(x, &gdbctx->xpoint_list, struct gdb_xpoint, entry)
850 {
851 if (x->pid != process->pid || x->tid != thread->tid)
852 continue;
853 if (!cpu->is_watchpoint_set(ctx, x->value))
854 continue;
855 if (x->type == be_xpoint_watch_write)
856 {
857 packet_reply_add(gdbctx, "watch:");
858 packet_reply_val(gdbctx, (unsigned long)x->addr, sizeof(x->addr));
859 packet_reply_add(gdbctx, ";");
860 }
861 if (x->type == be_xpoint_watch_read)
862 {
863 packet_reply_add(gdbctx, "rwatch:");
864 packet_reply_val(gdbctx, (unsigned long)x->addr, sizeof(x->addr));
865 packet_reply_add(gdbctx, ";");
866 }
867 }
868 }
869
870 static enum packet_return packet_reply_status(struct gdb_context* gdbctx)
871 {
872 struct dbg_process *process = gdbctx->process;
873 struct dbg_thread *thread;
874 struct backend_cpu *backend;
875 dbg_ctx_t ctx;
876 size_t i;
877
878 switch (gdbctx->de.dwDebugEventCode)
879 {
880 default:
881 if (!process) return packet_error;
882 if (!(backend = process->be_cpu)) return packet_error;
883 if (!(thread = dbg_get_thread(process, gdbctx->de.dwThreadId)) ||
884 !backend->get_context(thread->handle, &ctx))
885 return packet_error;
886
887 packet_reply_open(gdbctx);
888 packet_reply_add(gdbctx, "T");
889 packet_reply_val(gdbctx, signal_from_debug_event(&gdbctx->de), 1);
890 packet_reply_add(gdbctx, "thread:");
891 packet_reply_val(gdbctx, gdbctx->de.dwThreadId, 4);
892 packet_reply_add(gdbctx, ";");
893 packet_reply_status_xpoints(gdbctx, thread, &ctx);
894
895 for (i = 0; i < backend->gdb_num_regs; i++)
896 {
897 packet_reply_val(gdbctx, i, 1);
898 packet_reply_add(gdbctx, ":");
899 packet_reply_register_hex_to(gdbctx, &ctx, i);
900 packet_reply_add(gdbctx, ";");
901 }
902
903 packet_reply_close(gdbctx);
904 return packet_done;
905
906 case EXIT_PROCESS_DEBUG_EVENT:
907 packet_reply_open(gdbctx);
908 packet_reply_add(gdbctx, "W");
909 packet_reply_val(gdbctx, gdbctx->de.u.ExitProcess.dwExitCode, 4);
910 packet_reply_close(gdbctx);
911 return packet_done | packet_last_f;
912 }
913 }
914
915 static enum packet_return packet_last_signal(struct gdb_context* gdbctx)
916 {
917 assert(gdbctx->in_packet_len == 0);
918 return packet_reply_status(gdbctx);
919 }
920
921 static enum packet_return packet_continue(struct gdb_context* gdbctx)
922 {
923 void *addr;
924
925 if (sscanf(gdbctx->in_packet, "%p", &addr) == 1)
926 FIXME("Continue at address %p not supported\n", addr);
927
928 handle_step_or_continue(gdbctx, gdbctx->exec_tid, FALSE, -1);
929
930 wait_for_debuggee(gdbctx);
931 return packet_reply_status(gdbctx);
932 }
933
934 static enum packet_return packet_verbose_cont(struct gdb_context* gdbctx)
935 {
936 char *buf = gdbctx->in_packet, *end = gdbctx->in_packet + gdbctx->in_packet_len;
937
938 if (gdbctx->in_packet[4] == '?')
939 {
940 packet_reply_open(gdbctx);
941 packet_reply_add(gdbctx, "vCont");
942 packet_reply_add(gdbctx, ";c");
943 packet_reply_add(gdbctx, ";C");
944 packet_reply_add(gdbctx, ";s");
945 packet_reply_add(gdbctx, ";S");
946 packet_reply_close(gdbctx);
947 return packet_done;
948 }
949
950 while (buf < end && (buf = memchr(buf + 1, ';', end - buf - 1)))
951 {
952 int tid = -1, sig = -1;
953 int action, n;
954
955 switch ((action = buf[1]))
956 {
957 default:
958 return packet_error;
959 case 'c':
960 case 's':
961 buf += 2;
962 break;
963 case 'C':
964 case 'S':
965 if (sscanf(buf, ";%*c%2x", &sig) <= 0 ||
966 sig != signal_from_debug_event(&gdbctx->de))
967 return packet_error;
968 buf += 4;
969 break;
970 }
971
972 if (buf > end)
973 return packet_error;
974 if (buf < end && *buf == ':' && (n = sscanf(buf, ":%x", &tid)) <= 0)
975 return packet_error;
976
977 handle_step_or_continue(gdbctx, tid, action == 's' || action == 'S', sig);
978 }
979
980 wait_for_debuggee(gdbctx);
981 return packet_reply_status(gdbctx);
982 }
983
984 static enum packet_return packet_verbose(struct gdb_context* gdbctx)
985 {
986 if (gdbctx->in_packet_len >= 4 && !memcmp(gdbctx->in_packet, "Cont", 4))
987 {
988 return packet_verbose_cont(gdbctx);
989 }
990
991 if (gdbctx->in_packet_len == 14 && !memcmp(gdbctx->in_packet, "MustReplyEmpty", 14))
992 return packet_reply(gdbctx, "");
993
994 return packet_error;
995 }
996
997 static enum packet_return packet_continue_signal(struct gdb_context* gdbctx)
998 {
999 void *addr;
1000 int sig, n;
1001
1002 if ((n = sscanf(gdbctx->in_packet, "%x;%p", &sig, &addr)) == 2)
1003 FIXME("Continue at address %p not supported\n", addr);
1004 if (n < 1) return packet_error;
1005
1006 if (sig != signal_from_debug_event(&gdbctx->de))
1007 {
1008 ERR("Changing signals is not supported.\n");
1009 return packet_error;
1010 }
1011
1012 handle_step_or_continue(gdbctx, gdbctx->exec_tid, FALSE, sig);
1013
1014 wait_for_debuggee(gdbctx);
1015 return packet_reply_status(gdbctx);
1016 }
1017
1018 static enum packet_return packet_delete_breakpoint(struct gdb_context* gdbctx)
1019 {
1020 struct dbg_process *process = gdbctx->process;
1021 struct dbg_thread *thread;
1022 struct backend_cpu *cpu;
1023 struct gdb_xpoint *x;
1024 dbg_ctx_t ctx;
1025 char type;
1026 void *addr;
1027 int size;
1028
1029 if (!process) return packet_error;
1030 if (!(cpu = process->be_cpu)) return packet_error;
1031
1032 if (sscanf(gdbctx->in_packet, "%c,%p,%x", &type, &addr, &size) < 3)
1033 return packet_error;
1034
1035 if (type == '0')
1036 return packet_error;
1037
1038 LIST_FOR_EACH_ENTRY(thread, &process->threads, struct dbg_thread, entry)
1039 {
1040 if (!cpu->get_context(thread->handle, &ctx))
1041 continue;
1042 if ((type == '1') && (x = gdb_find_xpoint(gdbctx, thread, be_xpoint_watch_exec, addr, size)))
1043 gdbctx_delete_xpoint(gdbctx, thread, &ctx, x);
1044 if ((type == '2' || type == '4') && (x = gdb_find_xpoint(gdbctx, thread, be_xpoint_watch_read, addr, size)))
1045 gdbctx_delete_xpoint(gdbctx, thread, &ctx, x);
1046 if ((type == '3' || type == '4') && (x = gdb_find_xpoint(gdbctx, thread, be_xpoint_watch_write, addr, size)))
1047 gdbctx_delete_xpoint(gdbctx, thread, &ctx, x);
1048 cpu->set_context(thread->handle, &ctx);
1049 }
1050
1051 while ((type == '1') && (x = gdb_find_xpoint(gdbctx, NULL, be_xpoint_watch_exec, addr, size)))
1052 gdbctx_delete_xpoint(gdbctx, NULL, NULL, x);
1053 while ((type == '2' || type == '4') && (x = gdb_find_xpoint(gdbctx, NULL, be_xpoint_watch_read, addr, size)))
1054 gdbctx_delete_xpoint(gdbctx, NULL, NULL, x);
1055 while ((type == '3' || type == '4') && (x = gdb_find_xpoint(gdbctx, NULL, be_xpoint_watch_write, addr, size)))
1056 gdbctx_delete_xpoint(gdbctx, NULL, NULL, x);
1057
1058 return packet_ok;
1059 }
1060
1061 static enum packet_return packet_insert_breakpoint(struct gdb_context* gdbctx)
1062 {
1063 struct dbg_process *process = gdbctx->process;
1064 struct dbg_thread *thread;
1065 struct backend_cpu *cpu;
1066 dbg_ctx_t ctx;
1067 char type;
1068 void *addr;
1069 int size;
1070
1071 if (!process) return packet_error;
1072 if (!(cpu = process->be_cpu)) return packet_error;
1073
1074 if (memchr(gdbctx->in_packet, ';', gdbctx->in_packet_len))
1075 {
1076 FIXME("breakpoint commands not supported\n");
1077 return packet_error;
1078 }
1079
1080 if (sscanf(gdbctx->in_packet, "%c,%p,%x", &type, &addr, &size) < 3)
1081 return packet_error;
1082
1083 if (type == '0')
1084 return packet_error;
1085
1086 LIST_FOR_EACH_ENTRY(thread, &process->threads, struct dbg_thread, entry)
1087 {
1088 if (!cpu->get_context(thread->handle, &ctx))
1089 continue;
1090 if (type == '1')
1091 gdbctx_insert_xpoint(gdbctx, thread, &ctx, be_xpoint_watch_exec, addr, size);
1092 if (type == '2' || type == '4')
1093 gdbctx_insert_xpoint(gdbctx, thread, &ctx, be_xpoint_watch_read, addr, size);
1094 if (type == '3' || type == '4')
1095 gdbctx_insert_xpoint(gdbctx, thread, &ctx, be_xpoint_watch_write, addr, size);
1096 cpu->set_context(thread->handle, &ctx);
1097 }
1098
1099 return packet_ok;
1100 }
1101
1102 static enum packet_return packet_detach(struct gdb_context* gdbctx)
1103 {
1104 detach_debuggee(gdbctx, FALSE);
1105 return packet_ok | packet_last_f;
1106 }
1107
1108 static enum packet_return packet_read_registers(struct gdb_context* gdbctx)
1109 {
1110 struct dbg_thread *thread = dbg_thread_from_tid(gdbctx, gdbctx->other_tid);
1111 struct backend_cpu *backend;
1112 dbg_ctx_t ctx;
1113 size_t i;
1114
1115 if (!thread) return packet_error;
1116 if (!thread->process) return packet_error;
1117 if (!(backend = thread->process->be_cpu)) return packet_error;
1118
1119 if (!backend->get_context(thread->handle, &ctx))
1120 return packet_error;
1121
1122 packet_reply_open(gdbctx);
1123 for (i = 0; i < backend->gdb_num_regs; i++)
1124 packet_reply_register_hex_to(gdbctx, &ctx, i);
1125
1126 packet_reply_close(gdbctx);
1127 return packet_done;
1128 }
1129
1130 static enum packet_return packet_write_registers(struct gdb_context* gdbctx)
1131 {
1132 struct dbg_thread *thread = dbg_thread_from_tid(gdbctx, gdbctx->other_tid);
1133 struct backend_cpu *backend;
1134 dbg_ctx_t ctx;
1135 const char *ptr;
1136 size_t i;
1137
1138 if (!thread) return packet_error;
1139 if (!thread->process) return packet_error;
1140 if (!(backend = thread->process->be_cpu)) return packet_error;
1141
1142 if (!backend->get_context(thread->handle, &ctx))
1143 return packet_error;
1144
1145 if (gdbctx->in_packet_len < backend->gdb_num_regs * 2)
1146 return packet_error;
1147
1148 ptr = gdbctx->in_packet;
1149 for (i = 0; i < backend->gdb_num_regs; i++)
1150 cpu_register_hex_from(gdbctx, &ctx, i, &ptr);
1151
1152 if (!backend->set_context(thread->handle, &ctx))
1153 {
1154 ERR("Failed to set context for tid %04x, error %u\n", thread->tid, GetLastError());
1155 return packet_error;
1156 }
1157
1158 return packet_ok;
1159 }
1160
1161 static enum packet_return packet_kill(struct gdb_context* gdbctx)
1162 {
1163 detach_debuggee(gdbctx, TRUE);
1164 return packet_ok | packet_last_f;
1165 }
1166
1167 static enum packet_return packet_thread(struct gdb_context* gdbctx)
1168 {
1169 switch (gdbctx->in_packet[0])
1170 {
1171 case 'c':
1172 if (sscanf(gdbctx->in_packet, "c%x", &gdbctx->exec_tid) == 1)
1173 return packet_ok;
1174 return packet_error;
1175 case 'g':
1176 if (sscanf(gdbctx->in_packet, "g%x", &gdbctx->other_tid) == 1)
1177 return packet_ok;
1178 return packet_error;
1179 default:
1180 FIXME("Unknown thread sub-command %c\n", gdbctx->in_packet[0]);
1181 return packet_error;
1182 }
1183 }
1184
1185 static enum packet_return packet_read_memory(struct gdb_context* gdbctx)
1186 {
1187 char *addr;
1188 unsigned int len, blk_len, nread;
1189 char buffer[32];
1190 SIZE_T r = 0;
1191
1192 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2) return packet_error;
1193 if (len <= 0) return packet_error;
1194 TRACE("Read %u bytes at %p\n", len, addr);
1195 for (nread = 0; nread < len; nread += r, addr += r)
1196 {
1197 blk_len = min(sizeof(buffer), len - nread);
1198 if (!gdbctx->process->process_io->read(gdbctx->process->handle, addr,
1199 buffer, blk_len, &r) || r == 0)
1200 {
1201 /* fail at first address, return error */
1202 if (nread == 0) return packet_reply_error(gdbctx, EFAULT);
1203 /* something has already been read, return partial information */
1204 break;
1205 }
1206 if (nread == 0) packet_reply_open(gdbctx);
1207 packet_reply_hex_to(gdbctx, buffer, r);
1208 }
1209 packet_reply_close(gdbctx);
1210 return packet_done;
1211 }
1212
1213 static enum packet_return packet_write_memory(struct gdb_context* gdbctx)
1214 {
1215 char* addr;
1216 unsigned int len, blk_len;
1217 char* ptr;
1218 char buffer[32];
1219 SIZE_T w;
1220
1221 ptr = memchr(gdbctx->in_packet, ':', gdbctx->in_packet_len);
1222 if (ptr == NULL)
1223 {
1224 ERR("Cannot find ':' in %s\n", debugstr_an(gdbctx->in_packet, gdbctx->in_packet_len));
1225 return packet_error;
1226 }
1227 *ptr++ = '\0';
1228
1229 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2)
1230 {
1231 ERR("Failed to parse %s\n", debugstr_a(gdbctx->in_packet));
1232 return packet_error;
1233 }
1234 if (ptr - gdbctx->in_packet + len * 2 != gdbctx->in_packet_len)
1235 {
1236 ERR("Length %u does not match packet length %u\n",
1237 (int)(ptr - gdbctx->in_packet) + len * 2, gdbctx->in_packet_len);
1238 return packet_error;
1239 }
1240 TRACE("Write %u bytes at %p\n", len, addr);
1241 while (len > 0)
1242 {
1243 blk_len = min(sizeof(buffer), len);
1244 hex_from(buffer, ptr, blk_len);
1245 if (!gdbctx->process->process_io->write(gdbctx->process->handle, addr, buffer, blk_len, &w) ||
1246 w != blk_len)
1247 break;
1248 addr += blk_len;
1249 len -= blk_len;
1250 ptr += blk_len;
1251 }
1252 return packet_ok; /* FIXME: error while writing ? */
1253 }
1254
1255 static enum packet_return packet_read_register(struct gdb_context* gdbctx)
1256 {
1257 struct dbg_thread *thread = dbg_thread_from_tid(gdbctx, gdbctx->other_tid);
1258 struct backend_cpu *backend;
1259 dbg_ctx_t ctx;
1260 size_t reg;
1261
1262 if (!thread) return packet_error;
1263 if (!thread->process) return packet_error;
1264 if (!(backend = thread->process->be_cpu)) return packet_error;
1265
1266 if (!backend->get_context(thread->handle, &ctx))
1267 return packet_error;
1268
1269 if (sscanf(gdbctx->in_packet, "%zx", &reg) != 1)
1270 return packet_error;
1271 if (reg >= backend->gdb_num_regs)
1272 {
1273 WARN("Unhandled register %zu\n", reg);
1274 return packet_error;
1275 }
1276
1277 TRACE("%zu => %s\n", reg, wine_dbgstr_longlong(cpu_register(gdbctx, &ctx, reg)));
1278
1279 packet_reply_open(gdbctx);
1280 packet_reply_register_hex_to(gdbctx, &ctx, reg);
1281 packet_reply_close(gdbctx);
1282 return packet_done;
1283 }
1284
1285 static enum packet_return packet_write_register(struct gdb_context* gdbctx)
1286 {
1287 struct dbg_thread *thread = dbg_thread_from_tid(gdbctx, gdbctx->other_tid);
1288 struct backend_cpu *backend;
1289 dbg_ctx_t ctx;
1290 size_t reg;
1291 char *ptr;
1292
1293 if (!thread) return packet_error;
1294 if (!thread->process) return packet_error;
1295 if (!(backend = thread->process->be_cpu)) return packet_error;
1296
1297 if (!backend->get_context(thread->handle, &ctx))
1298 return packet_error;
1299
1300 if (!(ptr = strchr(gdbctx->in_packet, '=')))
1301 return packet_error;
1302 *ptr++ = '\0';
1303
1304 if (sscanf(gdbctx->in_packet, "%zx", &reg) != 1)
1305 return packet_error;
1306 if (reg >= backend->gdb_num_regs)
1307 {
1308 /* FIXME: if just the reg is above cpu_num_regs, don't tell gdb
1309 * it wouldn't matter too much, and it fakes our support for all regs
1310 */
1311 WARN("Unhandled register %zu\n", reg);
1312 return packet_ok;
1313 }
1314
1315 TRACE("%zu <= %s\n", reg, debugstr_an(ptr, (int)(gdbctx->in_packet_len - (ptr - gdbctx->in_packet))));
1316
1317 cpu_register_hex_from(gdbctx, &ctx, reg, (const char**)&ptr);
1318 if (!backend->set_context(thread->handle, &ctx))
1319 {
1320 ERR("Failed to set context for tid %04x, error %u\n", thread->tid, GetLastError());
1321 return packet_error;
1322 }
1323
1324 return packet_ok;
1325 }
1326
1327 static void packet_query_monitor_wnd_helper(struct gdb_context* gdbctx, HWND hWnd, int indent)
1328 {
1329 char buffer[128];
1330 char clsName[128];
1331 char wndName[128];
1332 HWND child;
1333
1334 do {
1335 if (!GetClassNameA(hWnd, clsName, sizeof(clsName)))
1336 strcpy(clsName, "-- Unknown --");
1337 if (!GetWindowTextA(hWnd, wndName, sizeof(wndName)))
1338 strcpy(wndName, "-- Empty --");
1339
1340 packet_reply_open(gdbctx);
1341 packet_reply_add(gdbctx, "O");
1342 snprintf(buffer, sizeof(buffer),
1343 "%*s%04lx%*s%-17.17s %08x %0*lx %.14s\n",
1344 indent, "", (ULONG_PTR)hWnd, 13 - indent, "",
1345 clsName, GetWindowLongW(hWnd, GWL_STYLE),
1346 ADDRWIDTH, (ULONG_PTR)GetWindowLongPtrW(hWnd, GWLP_WNDPROC),
1347 wndName);
1348 packet_reply_hex_to_str(gdbctx, buffer);
1349 packet_reply_close(gdbctx);
1350
1351 if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
1352 packet_query_monitor_wnd_helper(gdbctx, child, indent + 1);
1353 } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
1354 }
1355
1356 static void packet_query_monitor_wnd(struct gdb_context* gdbctx, int len, const char* str)
1357 {
1358 char buffer[128];
1359
1360 /* we do the output in several 'O' packets, with the last one being just OK for
1361 * marking the end of the output */
1362 packet_reply_open(gdbctx);
1363 packet_reply_add(gdbctx, "O");
1364 snprintf(buffer, sizeof(buffer),
1365 "%-16.16s %-17.17s %-8.8s %s\n",
1366 "hwnd", "Class Name", " Style", " WndProc Text");
1367 packet_reply_hex_to_str(gdbctx, buffer);
1368 packet_reply_close(gdbctx);
1369
1370 /* FIXME: could also add a pmt to this command in str... */
1371 packet_query_monitor_wnd_helper(gdbctx, GetDesktopWindow(), 0);
1372 packet_reply(gdbctx, "OK");
1373 }
1374
1375 static void packet_query_monitor_process(struct gdb_context* gdbctx, int len, const char* str)
1376 {
1377 HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1378 char buffer[31+MAX_PATH];
1379 char deco;
1380 PROCESSENTRY32 entry;
1381 BOOL ok;
1382
1383 if (snap == INVALID_HANDLE_VALUE)
1384 return;
1385
1386 entry.dwSize = sizeof(entry);
1387 ok = Process32First(snap, &entry);
1388
1389 /* we do the output in several 'O' packets, with the last one being just OK for
1390 * marking the end of the output */
1391
1392 packet_reply_open(gdbctx);
1393 packet_reply_add(gdbctx, "O");
1394 snprintf(buffer, sizeof(buffer),
1395 " %-8.8s %-8.8s %-8.8s %s\n",
1396 "pid", "threads", "parent", "executable");
1397 packet_reply_hex_to_str(gdbctx, buffer);
1398 packet_reply_close(gdbctx);
1399
1400 while (ok)
1401 {
1402 deco = ' ';
1403 if (entry.th32ProcessID == gdbctx->process->pid) deco = '>';
1404 packet_reply_open(gdbctx);
1405 packet_reply_add(gdbctx, "O");
1406 snprintf(buffer, sizeof(buffer),
1407 "%c%08x %-8d %08x '%s'\n",
1408 deco, entry.th32ProcessID, entry.cntThreads,
1409 entry.th32ParentProcessID, entry.szExeFile);
1410 packet_reply_hex_to_str(gdbctx, buffer);
1411 packet_reply_close(gdbctx);
1412 ok = Process32Next(snap, &entry);
1413 }
1414 CloseHandle(snap);
1415 packet_reply(gdbctx, "OK");
1416 }
1417
1418 static void packet_query_monitor_mem(struct gdb_context* gdbctx, int len, const char* str)
1419 {
1420 MEMORY_BASIC_INFORMATION mbi;
1421 char* addr = 0;
1422 const char* state;
1423 const char* type;
1424 char prot[3+1];
1425 char buffer[128];
1426
1427 /* we do the output in several 'O' packets, with the last one being just OK for
1428 * marking the end of the output */
1429 packet_reply_open(gdbctx);
1430 packet_reply_add(gdbctx, "O");
1431 packet_reply_hex_to_str(gdbctx, "Address Size State Type RWX\n");
1432 packet_reply_close(gdbctx);
1433
1434 while (VirtualQueryEx(gdbctx->process->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
1435 {
1436 switch (mbi.State)
1437 {
1438 case MEM_COMMIT: state = "commit "; break;
1439 case MEM_FREE: state = "free "; break;
1440 case MEM_RESERVE: state = "reserve"; break;
1441 default: state = "??? "; break;
1442 }
1443 if (mbi.State != MEM_FREE)
1444 {
1445 switch (mbi.Type)
1446 {
1447 case MEM_IMAGE: type = "image "; break;
1448 case MEM_MAPPED: type = "mapped "; break;
1449 case MEM_PRIVATE: type = "private"; break;
1450 case 0: type = " "; break;
1451 default: type = "??? "; break;
1452 }
1453 memset(prot, ' ' , sizeof(prot)-1);
1454 prot[sizeof(prot)-1] = '\0';
1455 if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1456 prot[0] = 'R';
1457 if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
1458 prot[1] = 'W';
1459 if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
1460 prot[1] = 'C';
1461 if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1462 prot[2] = 'X';
1463 }
1464 else
1465 {
1466 type = "";
1467 prot[0] = '\0';
1468 }
1469 packet_reply_open(gdbctx);
1470 snprintf(buffer, sizeof(buffer), "%0*lx %0*lx %s %s %s\n",
1471 (unsigned)sizeof(void*), (DWORD_PTR)addr,
1472 (unsigned)sizeof(void*), mbi.RegionSize, state, type, prot);
1473 packet_reply_add(gdbctx, "O");
1474 packet_reply_hex_to_str(gdbctx, buffer);
1475 packet_reply_close(gdbctx);
1476
1477 if (addr + mbi.RegionSize < addr) /* wrap around ? */
1478 break;
1479 addr += mbi.RegionSize;
1480 }
1481 packet_reply(gdbctx, "OK");
1482 }
1483
1484 struct query_detail
1485 {
1486 int with_arg;
1487 const char* name;
1488 size_t len;
1489 void (*handler)(struct gdb_context*, int, const char*);
1490 } query_details[] =
1491 {
1492 {0, "wnd", 3, packet_query_monitor_wnd},
1493 {0, "window", 6, packet_query_monitor_wnd},
1494 {0, "proc", 4, packet_query_monitor_process},
1495 {0, "process", 7, packet_query_monitor_process},
1496 {0, "mem", 3, packet_query_monitor_mem},
1497 {0, NULL, 0, NULL},
1498 };
1499
1500 static enum packet_return packet_query_remote_command(struct gdb_context* gdbctx,
1501 const char* hxcmd, size_t len)
1502 {
1503 char buffer[128];
1504 struct query_detail* qd;
1505
1506 assert((len & 1) == 0 && len < 2 * sizeof(buffer));
1507 len /= 2;
1508 hex_from(buffer, hxcmd, len);
1509
1510 for (qd = query_details; qd->name != NULL; qd++)
1511 {
1512 if (len < qd->len || strncmp(buffer, qd->name, qd->len) != 0) continue;
1513 if (!qd->with_arg && len != qd->len) continue;
1514
1515 (qd->handler)(gdbctx, len - qd->len, buffer + qd->len);
1516 return packet_done;
1517 }
1518 return packet_reply_error(gdbctx, EINVAL);
1519 }
1520
1521 static BOOL CALLBACK packet_query_libraries_cb(PCSTR mod_name, DWORD64 base, PVOID ctx)
1522 {
1523 struct gdb_context* gdbctx = ctx;
1524 MEMORY_BASIC_INFORMATION mbi;
1525 IMAGE_SECTION_HEADER *sec;
1526 IMAGE_DOS_HEADER *dos = NULL;
1527 IMAGE_NT_HEADERS *nth = NULL;
1528 IMAGEHLP_MODULE64 mod;
1529 SIZE_T size, i;
1530 BOOL is_wow64;
1531 char buffer[0x400];
1532
1533 mod.SizeOfStruct = sizeof(mod);
1534 SymGetModuleInfo64(gdbctx->process->handle, base, &mod);
1535
1536 packet_reply_add(gdbctx, "<library name=\"");
1537 if (strcmp(mod.LoadedImageName, "[vdso].so") == 0)
1538 packet_reply_add(gdbctx, "linux-vdso.so.1");
1539 else if (mod.LoadedImageName[0] == '/')
1540 packet_reply_add(gdbctx, mod.LoadedImageName);
1541 else
1542 {
1543 UNICODE_STRING nt_name;
1544 ANSI_STRING ansi_name;
1545 char *unix_path, *tmp;
1546
1547 RtlInitAnsiString(&ansi_name, mod.LoadedImageName);
1548 RtlAnsiStringToUnicodeString(&nt_name, &ansi_name, TRUE);
1549
1550 if ((unix_path = wine_get_unix_file_name(nt_name.Buffer)))
1551 {
1552 if (IsWow64Process(gdbctx->process->handle, &is_wow64) &&
1553 is_wow64 && (tmp = strstr(unix_path, "system32")))
1554 memcpy(tmp, "syswow64", 8);
1555 packet_reply_add(gdbctx, unix_path);
1556 }
1557 else
1558 packet_reply_add(gdbctx, mod.LoadedImageName);
1559
1560 HeapFree(GetProcessHeap(), 0, unix_path);
1561 RtlFreeUnicodeString(&nt_name);
1562 }
1563 packet_reply_add(gdbctx, "\">");
1564
1565 size = sizeof(buffer);
1566 if (VirtualQueryEx(gdbctx->process->handle, (void *)(UINT_PTR)mod.BaseOfImage, &mbi, sizeof(mbi)) >= sizeof(mbi) &&
1567 mbi.Type == MEM_IMAGE && mbi.State != MEM_FREE)
1568 {
1569 if (ReadProcessMemory(gdbctx->process->handle, (void *)(UINT_PTR)mod.BaseOfImage, buffer, size, &size) &&
1570 size >= sizeof(IMAGE_DOS_HEADER))
1571 dos = (IMAGE_DOS_HEADER *)buffer;
1572
1573 if (dos && dos->e_magic == IMAGE_DOS_SIGNATURE && dos->e_lfanew < size)
1574 nth = (IMAGE_NT_HEADERS *)(buffer + dos->e_lfanew);
1575
1576 if (nth && memcmp(&nth->Signature, "PE\0\0", 4))
1577 nth = NULL;
1578 }
1579
1580 if (!nth) memset(buffer, 0, sizeof(buffer));
1581
1582 /* if the module is not PE we have cleared buffer with 0, this makes
1583 * the following computation valid in all cases. */
1584 dos = (IMAGE_DOS_HEADER *)buffer;
1585 nth = (IMAGE_NT_HEADERS *)(buffer + dos->e_lfanew);
1586 if (IsWow64Process(gdbctx->process->handle, &is_wow64) && is_wow64)
1587 sec = IMAGE_FIRST_SECTION((IMAGE_NT_HEADERS32 *)nth);
1588 else
1589 sec = IMAGE_FIRST_SECTION((IMAGE_NT_HEADERS64 *)nth);
1590
1591 for (i = 0; i < max(nth->FileHeader.NumberOfSections, 1); ++i)
1592 {
1593 if ((char *)(sec + i) >= buffer + size) break;
1594 packet_reply_add(gdbctx, "<segment address=\"0x");
1595 packet_reply_val(gdbctx, mod.BaseOfImage + sec[i].VirtualAddress, sizeof(unsigned long));
1596 packet_reply_add(gdbctx, "\"/>");
1597 }
1598
1599 packet_reply_add(gdbctx, "</library>");
1600
1601 return TRUE;
1602 }
1603
1604 static void packet_query_libraries(struct gdb_context* gdbctx)
1605 {
1606 BOOL opt;
1607
1608 /* this will resynchronize builtin dbghelp's internal ELF module list */
1609 SymLoadModule(gdbctx->process->handle, 0, 0, 0, 0, 0);
1610
1611 packet_reply_add(gdbctx, "<library-list>");
1612 opt = SymSetExtendedOption(SYMOPT_EX_WINE_NATIVE_MODULES, TRUE);
1613 SymEnumerateModules64(gdbctx->process->handle, packet_query_libraries_cb, gdbctx);
1614 SymSetExtendedOption(SYMOPT_EX_WINE_NATIVE_MODULES, opt);
1615 packet_reply_add(gdbctx, "</library-list>");
1616 }
1617
1618 static void packet_query_threads(struct gdb_context* gdbctx)
1619 {
1620 struct dbg_process* process = gdbctx->process;
1621 struct dbg_thread* thread;
1622
1623 packet_reply_add(gdbctx, "<threads>");
1624 LIST_FOR_EACH_ENTRY(thread, &process->threads, struct dbg_thread, entry)
1625 {
1626 packet_reply_add(gdbctx, "<thread ");
1627 packet_reply_add(gdbctx, "id=\"");
1628 packet_reply_val(gdbctx, thread->tid, 4);
1629 packet_reply_add(gdbctx, "\" name=\"");
1630 packet_reply_add(gdbctx, thread->name);
1631 packet_reply_add(gdbctx, "\"/>");
1632 }
1633 packet_reply_add(gdbctx, "</threads>");
1634 }
1635
1636 static void packet_query_target_xml(struct gdb_context* gdbctx, struct backend_cpu* cpu)
1637 {
1638 const char* feature_prefix = NULL;
1639 const char* feature = NULL;
1640 char buffer[256];
1641 int i;
1642
1643 packet_reply_add(gdbctx, "<target>");
1644 switch (cpu->machine)
1645 {
1646 case IMAGE_FILE_MACHINE_AMD64:
1647 packet_reply_add(gdbctx, "<architecture>i386:x86-64</architecture>");
1648 feature_prefix = "org.gnu.gdb.i386.";
1649 break;
1650 case IMAGE_FILE_MACHINE_I386:
1651 packet_reply_add(gdbctx, "<architecture>i386</architecture>");
1652 feature_prefix = "org.gnu.gdb.i386.";
1653 break;
1654 case IMAGE_FILE_MACHINE_ARMNT:
1655 packet_reply_add(gdbctx, "<architecture>arm</architecture>");
1656 feature_prefix = "org.gnu.gdb.arm.";
1657 break;
1658 case IMAGE_FILE_MACHINE_ARM64:
1659 packet_reply_add(gdbctx, "<architecture>aarch64</architecture>");
1660 feature_prefix = "org.gnu.gdb.aarch64.";
1661 break;
1662 }
1663
1664 for (i = 0; i < cpu->gdb_num_regs; ++i)
1665 {
1666 if (cpu->gdb_register_map[i].feature)
1667 {
1668 if (feature) packet_reply_add(gdbctx, "</feature>");
1669 feature = cpu->gdb_register_map[i].feature;
1670
1671 packet_reply_add(gdbctx, "<feature name=\"");
1672 if (feature_prefix) packet_reply_add(gdbctx, feature_prefix);
1673 packet_reply_add(gdbctx, feature);
1674 packet_reply_add(gdbctx, "\">");
1675
1676 if (strcmp(feature_prefix, "org.gnu.gdb.i386.") == 0 &&
1677 strcmp(feature, "core") == 0)
1678 packet_reply_add(gdbctx, "<flags id=\"i386_eflags\" size=\"4\">"
1679 "<field name=\"CF\" start=\"0\" end=\"0\"/>"
1680 "<field name=\"\" start=\"1\" end=\"1\"/>"
1681 "<field name=\"PF\" start=\"2\" end=\"2\"/>"
1682 "<field name=\"AF\" start=\"4\" end=\"4\"/>"
1683 "<field name=\"ZF\" start=\"6\" end=\"6\"/>"
1684 "<field name=\"SF\" start=\"7\" end=\"7\"/>"
1685 "<field name=\"TF\" start=\"8\" end=\"8\"/>"
1686 "<field name=\"IF\" start=\"9\" end=\"9\"/>"
1687 "<field name=\"DF\" start=\"10\" end=\"10\"/>"
1688 "<field name=\"OF\" start=\"11\" end=\"11\"/>"
1689 "<field name=\"NT\" start=\"14\" end=\"14\"/>"
1690 "<field name=\"RF\" start=\"16\" end=\"16\"/>"
1691 "<field name=\"VM\" start=\"17\" end=\"17\"/>"
1692 "<field name=\"AC\" start=\"18\" end=\"18\"/>"
1693 "<field name=\"VIF\" start=\"19\" end=\"19\"/>"
1694 "<field name=\"VIP\" start=\"20\" end=\"20\"/>"
1695 "<field name=\"ID\" start=\"21\" end=\"21\"/>"
1696 "</flags>");
1697
1698 if (strcmp(feature_prefix, "org.gnu.gdb.i386.") == 0 &&
1699 strcmp(feature, "sse") == 0)
1700 packet_reply_add(gdbctx, "<vector id=\"v4f\" type=\"ieee_single\" count=\"4\"/>"
1701 "<vector id=\"v2d\" type=\"ieee_double\" count=\"2\"/>"
1702 "<vector id=\"v16i8\" type=\"int8\" count=\"16\"/>"
1703 "<vector id=\"v8i16\" type=\"int16\" count=\"8\"/>"
1704 "<vector id=\"v4i32\" type=\"int32\" count=\"4\"/>"
1705 "<vector id=\"v2i64\" type=\"int64\" count=\"2\"/>"
1706 "<union id=\"vec128\">"
1707 "<field name=\"v4_float\" type=\"v4f\"/>"
1708 "<field name=\"v2_double\" type=\"v2d\"/>"
1709 "<field name=\"v16_int8\" type=\"v16i8\"/>"
1710 "<field name=\"v8_int16\" type=\"v8i16\"/>"
1711 "<field name=\"v4_int32\" type=\"v4i32\"/>"
1712 "<field name=\"v2_int64\" type=\"v2i64\"/>"
1713 "<field name=\"uint128\" type=\"uint128\"/>"
1714 "</union>"
1715 "<flags id=\"i386_mxcsr\" size=\"4\">"
1716 "<field name=\"IE\" start=\"0\" end=\"0\"/>"
1717 "<field name=\"DE\" start=\"1\" end=\"1\"/>"
1718 "<field name=\"ZE\" start=\"2\" end=\"2\"/>"
1719 "<field name=\"OE\" start=\"3\" end=\"3\"/>"
1720 "<field name=\"UE\" start=\"4\" end=\"4\"/>"
1721 "<field name=\"PE\" start=\"5\" end=\"5\"/>"
1722 "<field name=\"DAZ\" start=\"6\" end=\"6\"/>"
1723 "<field name=\"IM\" start=\"7\" end=\"7\"/>"
1724 "<field name=\"DM\" start=\"8\" end=\"8\"/>"
1725 "<field name=\"ZM\" start=\"9\" end=\"9\"/>"
1726 "<field name=\"OM\" start=\"10\" end=\"10\"/>"
1727 "<field name=\"UM\" start=\"11\" end=\"11\"/>"
1728 "<field name=\"PM\" start=\"12\" end=\"12\"/>"
1729 "<field name=\"FZ\" start=\"15\" end=\"15\"/>"
1730 "</flags>");
1731 }
1732
1733 snprintf(buffer, ARRAY_SIZE(buffer), "<reg name=\"%s\" bitsize=\"%zu\"",
1734 cpu->gdb_register_map[i].name, 8 * cpu->gdb_register_map[i].length);
1735 packet_reply_add(gdbctx, buffer);
1736
1737 if (cpu->gdb_register_map[i].type)
1738 {
1739 packet_reply_add(gdbctx, " type=\"");
1740 packet_reply_add(gdbctx, cpu->gdb_register_map[i].type);
1741 packet_reply_add(gdbctx, "\"");
1742 }
1743
1744 packet_reply_add(gdbctx, "/>");
1745 }
1746
1747 if (feature) packet_reply_add(gdbctx, "</feature>");
1748 packet_reply_add(gdbctx, "</target>");
1749 }
1750
1751 static enum packet_return packet_query(struct gdb_context* gdbctx)
1752 {
1753 int off, len;
1754 struct backend_cpu *cpu;
1755
1756 switch (gdbctx->in_packet[0])
1757 {
1758 case 'f':
1759 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1760 {
1761 struct dbg_thread* thd;
1762
1763 packet_reply_open(gdbctx);
1764 packet_reply_add(gdbctx, "m");
1765 LIST_FOR_EACH_ENTRY(thd, &gdbctx->process->threads, struct dbg_thread, entry)
1766 {
1767 packet_reply_val(gdbctx, thd->tid, 4);
1768 if (list_next(&gdbctx->process->threads, &thd->entry) != NULL)
1769 packet_reply_add(gdbctx, ",");
1770 }
1771 packet_reply_close(gdbctx);
1772 return packet_done;
1773 }
1774 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1775 {
1776 char result[128];
1777
1778 packet_reply_open(gdbctx);
1779 packet_reply_add(gdbctx, "O");
1780 get_process_info(gdbctx, result, sizeof(result));
1781 packet_reply_hex_to_str(gdbctx, result);
1782 packet_reply_close(gdbctx);
1783 return packet_done;
1784 }
1785 break;
1786 case 's':
1787 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1788 {
1789 packet_reply(gdbctx, "l");
1790 return packet_done;
1791 }
1792 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1793 {
1794 packet_reply(gdbctx, "l");
1795 return packet_done;
1796 }
1797 break;
1798 case 'A':
1799 if (strncmp(gdbctx->in_packet, "Attached", gdbctx->in_packet_len) == 0)
1800 return packet_reply(gdbctx, "1");
1801 break;
1802 case 'C':
1803 if (gdbctx->in_packet_len == 1)
1804 {
1805 struct dbg_thread* thd;
1806 /* FIXME: doc says 16 bit val ??? */
1807 /* grab first created thread, aka last in list */
1808 assert(gdbctx->process && !list_empty(&gdbctx->process->threads));
1809 thd = LIST_ENTRY(list_tail(&gdbctx->process->threads), struct dbg_thread, entry);
1810 packet_reply_open(gdbctx);
1811 packet_reply_add(gdbctx, "QC");
1812 packet_reply_val(gdbctx, thd->tid, 4);
1813 packet_reply_close(gdbctx);
1814 return packet_done;
1815 }
1816 break;
1817 case 'O':
1818 if (strncmp(gdbctx->in_packet, "Offsets", gdbctx->in_packet_len) == 0)
1819 {
1820 char buf[64];
1821
1822 snprintf(buf, sizeof(buf),
1823 "Text=%08lx;Data=%08lx;Bss=%08lx",
1824 gdbctx->wine_segs[0], gdbctx->wine_segs[1],
1825 gdbctx->wine_segs[2]);
1826 return packet_reply(gdbctx, buf);
1827 }
1828 break;
1829 case 'R':
1830 if (gdbctx->in_packet_len > 5 && strncmp(gdbctx->in_packet, "Rcmd,", 5) == 0)
1831 {
1832 return packet_query_remote_command(gdbctx, gdbctx->in_packet + 5,
1833 gdbctx->in_packet_len - 5);
1834 }
1835 break;
1836 case 'S':
1837 if (strncmp(gdbctx->in_packet, "Symbol::", gdbctx->in_packet_len) == 0)
1838 return packet_ok;
1839 if (strncmp(gdbctx->in_packet, "Supported", 9) == 0)
1840 {
1841 packet_reply_open(gdbctx);
1842 packet_reply_add(gdbctx, "QStartNoAckMode+;");
1843 packet_reply_add(gdbctx, "qXfer:libraries:read+;");
1844 packet_reply_add(gdbctx, "qXfer:threads:read+;");
1845 packet_reply_add(gdbctx, "qXfer:features:read+;");
1846 packet_reply_close(gdbctx);
1847 return packet_done;
1848 }
1849 break;
1850 case 'T':
1851 if (gdbctx->in_packet_len > 15 &&
1852 strncmp(gdbctx->in_packet, "ThreadExtraInfo", 15) == 0 &&
1853 gdbctx->in_packet[15] == ',')
1854 {
1855 unsigned tid;
1856 char* end;
1857 char result[128];
1858
1859 tid = strtol(gdbctx->in_packet + 16, &end, 16);
1860 if (end == NULL) break;
1861 get_thread_info(gdbctx, tid, result, sizeof(result));
1862 packet_reply_open(gdbctx);
1863 packet_reply_hex_to_str(gdbctx, result);
1864 packet_reply_close(gdbctx);
1865 return packet_done;
1866 }
1867 if (strncmp(gdbctx->in_packet, "TStatus", 7) == 0)
1868 {
1869 /* Tracepoints not supported */
1870 packet_reply_open(gdbctx);
1871 packet_reply_close(gdbctx);
1872 return packet_done;
1873 }
1874 break;
1875 case 'X':
1876 if (sscanf(gdbctx->in_packet, "Xfer:libraries:read::%x,%x", &off, &len) == 2)
1877 {
1878 if (!gdbctx->process) return packet_error;
1879
1880 packet_reply_open_xfer(gdbctx);
1881 packet_query_libraries(gdbctx);
1882 packet_reply_close_xfer(gdbctx, off, len);
1883 return packet_done;
1884 }
1885
1886 if (sscanf(gdbctx->in_packet, "Xfer:threads:read::%x,%x", &off, &len) == 2)
1887 {
1888 if (!gdbctx->process) return packet_error;
1889
1890 packet_reply_open_xfer(gdbctx);
1891 packet_query_threads(gdbctx);
1892 packet_reply_close_xfer(gdbctx, off, len);
1893 return packet_done;
1894 }
1895
1896 if (sscanf(gdbctx->in_packet, "Xfer:features:read:target.xml:%x,%x", &off, &len) == 2)
1897 {
1898 if (!gdbctx->process) return packet_error;
1899 if (!(cpu = gdbctx->process->be_cpu)) return packet_error;
1900
1901 packet_reply_open_xfer(gdbctx);
1902 packet_query_target_xml(gdbctx, cpu);
1903 packet_reply_close_xfer(gdbctx, off, len);
1904 return packet_done;
1905 }
1906 break;
1907 }
1908 ERR("Unhandled query %s\n", debugstr_an(gdbctx->in_packet, gdbctx->in_packet_len));
1909 return packet_error;
1910 }
1911
1912 static enum packet_return packet_set(struct gdb_context* gdbctx)
1913 {
1914 if (strncmp(gdbctx->in_packet, "StartNoAckMode", 14) == 0)
1915 {
1916 gdbctx->no_ack_mode = TRUE;
1917 return packet_ok;
1918 }
1919
1920 return packet_error;
1921 }
1922
1923 static enum packet_return packet_step(struct gdb_context* gdbctx)
1924 {
1925 void *addr;
1926
1927 if (sscanf(gdbctx->in_packet, "%p", &addr) == 1)
1928 FIXME("Continue at address %p not supported\n", addr);
1929
1930 handle_step_or_continue(gdbctx, gdbctx->exec_tid, TRUE, -1);
1931
1932 wait_for_debuggee(gdbctx);
1933 return packet_reply_status(gdbctx);
1934 }
1935
1936 static enum packet_return packet_thread_alive(struct gdb_context* gdbctx)
1937 {
1938 char* end;
1939 unsigned tid;
1940
1941 tid = strtol(gdbctx->in_packet, &end, 16);
1942 if (tid == -1 || tid == 0)
1943 return packet_reply_error(gdbctx, EINVAL);
1944 if (dbg_get_thread(gdbctx->process, tid) != NULL)
1945 return packet_ok;
1946 return packet_reply_error(gdbctx, ESRCH);
1947 }
1948
1949 /* =============================================== *
1950 * P A C K E T I N F R A S T R U C T U R E *
1951 * =============================================== *
1952 */
1953
1954 struct packet_entry
1955 {
1956 char key;
1957 enum packet_return (*handler)(struct gdb_context* gdbctx);
1958 };
1959
1960 static struct packet_entry packet_entries[] =
1961 {
1962 {'?', packet_last_signal},
1963 {'c', packet_continue},
1964 {'C', packet_continue_signal},
1965 {'D', packet_detach},
1966 {'g', packet_read_registers},
1967 {'G', packet_write_registers},
1968 {'k', packet_kill},
1969 {'H', packet_thread},
1970 {'m', packet_read_memory},
1971 {'M', packet_write_memory},
1972 {'p', packet_read_register},
1973 {'P', packet_write_register},
1974 {'q', packet_query},
1975 {'Q', packet_set},
1976 {'s', packet_step},
1977 {'T', packet_thread_alive},
1978 {'v', packet_verbose},
1979 {'z', packet_delete_breakpoint},
1980 {'Z', packet_insert_breakpoint},
1981 };
1982
1983 static BOOL extract_packets(struct gdb_context* gdbctx)
1984 {
1985 char *ptr, *sum = gdbctx->in_buf, *end = gdbctx->in_buf + gdbctx->in_len;
1986 enum packet_return ret = packet_error;
1987 unsigned int cksum;
1988 int i, len;
1989
1990 /* ptr points to the beginning ('$') of the current packet
1991 * sum points to the beginning ('#') of the current packet checksum ("#xx")
1992 * len is the length of the current packet data (sum - ptr - 1)
1993 * end points to the end of the received data buffer
1994 */
1995
1996 while (!gdbctx->no_ack_mode &&
1997 (ptr = memchr(sum, '$', end - sum)) &&
1998 (sum = memchr(ptr, '#', end - ptr)) &&
1999 (end - sum >= 3) && sscanf(sum, "#%02x", &cksum) == 1)
2000 {
2001 len = sum - ptr - 1;
2002 sum += 3;
2003
2004 if (cksum == checksum(ptr + 1, len))
2005 {
2006 TRACE("Acking: %s\n", debugstr_an(ptr, sum - ptr));
2007 write(gdbctx->sock, "+", 1);
2008 }
2009 else
2010 {
2011 ERR("Nacking: %s (checksum: %d != %d)\n", debugstr_an(ptr, sum - ptr),
2012 cksum, checksum(ptr + 1, len));
2013 write(gdbctx->sock, "-", 1);
2014 }
2015 }
2016
2017 while ((ret & packet_last_f) == 0 &&
2018 (ptr = memchr(gdbctx->in_buf, '$', gdbctx->in_len)) &&
2019 (sum = memchr(ptr, '#', end - ptr)) &&
2020 (end - sum >= 3) && sscanf(sum, "#%02x", &cksum) == 1)
2021 {
2022 if (ptr != gdbctx->in_buf)
2023 WARN("Ignoring: %s\n", debugstr_an(gdbctx->in_buf, ptr - gdbctx->in_buf));
2024
2025 len = sum - ptr - 1;
2026 sum += 3;
2027
2028 if (cksum == checksum(ptr + 1, len))
2029 {
2030 TRACE("Handling: %s\n", debugstr_an(ptr, sum - ptr));
2031
2032 ret = packet_error;
2033 gdbctx->in_packet = ptr + 2;
2034 gdbctx->in_packet_len = len - 1;
2035 gdbctx->in_packet[gdbctx->in_packet_len] = '\0';
2036
2037 for (i = 0; i < ARRAY_SIZE(packet_entries); i++)
2038 if (packet_entries[i].key == ptr[1])
2039 break;
2040
2041 if (i == ARRAY_SIZE(packet_entries))
2042 WARN("Unhandled: %s\n", debugstr_an(ptr + 1, len));
2043 else if (((ret = (packet_entries[i].handler)(gdbctx)) & ~packet_last_f) == packet_error)
2044 WARN("Failed: %s\n", debugstr_an(ptr + 1, len));
2045
2046 switch (ret & ~packet_last_f)
2047 {
2048 case packet_error: packet_reply(gdbctx, ""); break;
2049 case packet_ok: packet_reply(gdbctx, "OK"); break;
2050 case packet_done: break;
2051 }
2052
2053 TRACE("Reply: %s\n", debugstr_an(gdbctx->out_buf, gdbctx->out_len));
2054 i = write(gdbctx->sock, gdbctx->out_buf, gdbctx->out_len);
2055 assert(i == gdbctx->out_len);
2056 gdbctx->out_len = 0;
2057 }
2058 else
2059 WARN("Ignoring: %s (checksum: %d != %d)\n", debugstr_an(ptr, sum - ptr),
2060 cksum, checksum(ptr + 1, len));
2061
2062 gdbctx->in_len = end - sum;
2063 memmove(gdbctx->in_buf, sum, end - sum);
2064 end = gdbctx->in_buf + gdbctx->in_len;
2065 }
2066
2067 return (ret & packet_last_f);
2068 }
2069
2070 static int fetch_data(struct gdb_context* gdbctx)
2071 {
2072 int len, in_len = gdbctx->in_len;
2073
2074 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2075 for (;;)
2076 {
2077 #define STEP 128
2078 if (gdbctx->in_len + STEP > gdbctx->in_buf_alloc)
2079 gdbctx->in_buf = packet_realloc(gdbctx->in_buf, gdbctx->in_buf_alloc += STEP);
2080 #undef STEP
2081 len = read(gdbctx->sock, gdbctx->in_buf + gdbctx->in_len, gdbctx->in_buf_alloc - gdbctx->in_len - 1);
2082 if (len <= 0) break;
2083 gdbctx->in_len += len;
2084 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2085 if (len < gdbctx->in_buf_alloc - gdbctx->in_len) break;
2086 }
2087
2088 gdbctx->in_buf[gdbctx->in_len] = '\0';
2089 return gdbctx->in_len - in_len;
2090 }
2091
2092 #define FLAG_NO_START 1
2093 #define FLAG_WITH_XTERM 2
2094
2095 static BOOL gdb_exec(unsigned port, unsigned flags)
2096 {
2097 char buf[MAX_PATH];
2098 int fd;
2099 const char *gdb_path, *tmp_path;
2100 FILE* f;
2101
2102 if (!(gdb_path = getenv("WINE_GDB"))) gdb_path = "gdb";
2103 if (!(tmp_path = getenv("TMPDIR"))) tmp_path = "/tmp";
2104 strcpy(buf, tmp_path);
2105 strcat(buf, "/winegdb.XXXXXX");
2106 fd = mkstemps(buf, 0);
2107 if (fd == -1) return FALSE;
2108 if ((f = fdopen(fd, "w+")) == NULL) return FALSE;
2109 fprintf(f, "target remote localhost:%d\n", ntohs(port));
2110 fprintf(f, "set prompt Wine-gdb>\\ \n");
2111 /* gdb 5.1 seems to require it, won't hurt anyway */
2112 fprintf(f, "sharedlibrary\n");
2113 /* This is needed (but not a decent & final fix)
2114 * Without this, gdb would skip our inter-DLL relay code (because
2115 * we don't have any line number information for the relay code)
2116 * With this, we will stop on first instruction of the stub, and
2117 * reusing step, will get us through the relay stub at the actual
2118 * function we're looking at.
2119 */
2120 fprintf(f, "set step-mode on\n");
2121 /* tell gdb to delete this file when done handling it... */
2122 fprintf(f, "shell rm -f \"%s\"\n", buf);
2123 fclose(f);
2124 if (flags & FLAG_WITH_XTERM)
2125 execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
2126 else
2127 execlp(gdb_path, gdb_path, "-x", buf, NULL);
2128 assert(0); /* never reached */
2129 return TRUE;
2130 }
2131
2132 static BOOL gdb_startup(struct gdb_context* gdbctx, unsigned flags, unsigned port)
2133 {
2134 int sock;
2135 struct sockaddr_in s_addrs = {0};
2136 socklen_t s_len = sizeof(s_addrs);
2137 struct pollfd pollfd;
2138 BOOL ret = FALSE;
2139
2140 /* step 1: create socket for gdb connection request */
2141 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
2142 {
2143 ERR("Failed to create socket: %s\n", strerror(errno));
2144 return FALSE;
2145 }
2146
2147 s_addrs.sin_family = AF_INET;
2148 s_addrs.sin_addr.s_addr = INADDR_ANY;
2149 s_addrs.sin_port = htons(port);
2150 if (bind(sock, (struct sockaddr *)&s_addrs, sizeof(s_addrs)) == -1)
2151 goto cleanup;
2152
2153 if (listen(sock, 1) == -1 || getsockname(sock, (struct sockaddr*)&s_addrs, &s_len) == -1)
2154 goto cleanup;
2155
2156 /* step 2: do the process internal creation */
2157 handle_debug_event(gdbctx);
2158
2159 /* step 3: fire up gdb (if requested) */
2160 if (flags & FLAG_NO_START)
2161 fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
2162 else
2163 switch (fork())
2164 {
2165 case -1: /* error in parent... */
2166 ERR("Failed to start gdb: fork: %s\n", strerror(errno));
2167 goto cleanup;
2168 default: /* in parent... success */
2169 signal(SIGINT, SIG_IGN);
2170 break;
2171 case 0: /* in child... and alive */
2172 gdb_exec(s_addrs.sin_port, flags);
2173 /* if we're here, exec failed, so report failure */
2174 goto cleanup;
2175 }
2176
2177 /* step 4: wait for gdb to connect actually */
2178 pollfd.fd = sock;
2179 pollfd.events = POLLIN;
2180 pollfd.revents = 0;
2181
2182 switch (poll(&pollfd, 1, -1))
2183 {
2184 case 1:
2185 if (pollfd.revents & POLLIN)
2186 {
2187 int dummy = 1;
2188 gdbctx->sock = accept(sock, (struct sockaddr*)&s_addrs, &s_len);
2189 if (gdbctx->sock == -1)
2190 break;
2191 ret = TRUE;
2192 TRACE("connected on %d\n", gdbctx->sock);
2193 /* don't keep our small packets too long: send them ASAP back to GDB
2194 * without this, GDB really crawls
2195 */
2196 setsockopt(gdbctx->sock, IPPROTO_TCP, TCP_NODELAY, (char*)&dummy, sizeof(dummy));
2197 }
2198 break;
2199 case 0:
2200 ERR("Timed out connecting to gdb\n");
2201 break;
2202 case -1:
2203 ERR("Failed to connect to gdb: poll: %s\n", strerror(errno));
2204 break;
2205 default:
2206 assert(0);
2207 }
2208
2209 cleanup:
2210 close(sock);
2211 return ret;
2212 }
2213
2214 static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags, unsigned port)
2215 {
2216 int i;
2217
2218 gdbctx->sock = -1;
2219 gdbctx->in_buf = NULL;
2220 gdbctx->in_buf_alloc = 0;
2221 gdbctx->in_len = 0;
2222 gdbctx->out_buf = NULL;
2223 gdbctx->out_buf_alloc = 0;
2224 gdbctx->out_len = 0;
2225 gdbctx->out_curr_packet = -1;
2226
2227 gdbctx->exec_tid = -1;
2228 gdbctx->other_tid = -1;
2229 list_init(&gdbctx->xpoint_list);
2230 gdbctx->process = NULL;
2231 gdbctx->no_ack_mode = FALSE;
2232 for (i = 0; i < ARRAY_SIZE(gdbctx->wine_segs); i++)
2233 gdbctx->wine_segs[i] = 0;
2234
2235 /* wait for first trap */
2236 while (WaitForDebugEvent(&gdbctx->de, INFINITE))
2237 {
2238 if (gdbctx->de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
2239 {
2240 /* this should be the first event we get,
2241 * and the only one of this type */
2242 assert(gdbctx->process == NULL && gdbctx->de.dwProcessId == dbg_curr_pid);
2243 /* gdbctx->dwProcessId = pid; */
2244 if (!gdb_startup(gdbctx, flags, port)) return FALSE;
2245 }
2246 else if (!handle_debug_event(gdbctx))
2247 break;
2248 ContinueDebugEvent(gdbctx->de.dwProcessId, gdbctx->de.dwThreadId, DBG_CONTINUE);
2249 }
2250 return TRUE;
2251 }
2252
2253 static int gdb_remote(unsigned flags, unsigned port)
2254 {
2255 struct pollfd pollfd;
2256 struct gdb_context gdbctx;
2257 BOOL doLoop;
2258
2259 for (doLoop = gdb_init_context(&gdbctx, flags, port); doLoop;)
2260 {
2261 pollfd.fd = gdbctx.sock;
2262 pollfd.events = POLLIN;
2263 pollfd.revents = 0;
2264
2265 switch (poll(&pollfd, 1, -1))
2266 {
2267 case 1:
2268 /* got something */
2269 if (pollfd.revents & (POLLHUP | POLLERR))
2270 {
2271 ERR("gdb hung up\n");
2272 /* kill also debuggee process - questionnable - */
2273 detach_debuggee(&gdbctx, TRUE);
2274 doLoop = FALSE;
2275 break;
2276 }
2277 if ((pollfd.revents & POLLIN) && fetch_data(&gdbctx) > 0)
2278 {
2279 if (extract_packets(&gdbctx)) doLoop = FALSE;
2280 }
2281 break;
2282 case 0:
2283 /* timeout, should never happen (infinite timeout) */
2284 break;
2285 case -1:
2286 ERR("poll failed: %s\n", strerror(errno));
2287 doLoop = FALSE;
2288 break;
2289 }
2290 }
2291 wait(NULL);
2292 return 0;
2293 }
2294 #endif
2295
2296 int gdb_main(int argc, char* argv[])
2297 {
2298 #ifdef HAVE_POLL
2299 unsigned gdb_flags = 0, port = 0;
2300 char *port_end;
2301
2302 argc--; argv++;
2303 while (argc > 0 && argv[0][0] == '-')
2304 {
2305 if (strcmp(argv[0], "--no-start") == 0)
2306 {
2307 gdb_flags |= FLAG_NO_START;
2308 argc--; argv++;
2309 continue;
2310 }
2311 if (strcmp(argv[0], "--with-xterm") == 0)
2312 {
2313 gdb_flags |= FLAG_WITH_XTERM;
2314 argc--; argv++;
2315 continue;
2316 }
2317 if (strcmp(argv[0], "--port") == 0 && argc > 1)
2318 {
2319 port = strtoul(argv[1], &port_end, 10);
2320 if (*port_end)
2321 {
2322 fprintf(stderr, "Invalid port: %s\n", argv[1]);
2323 return -1;
2324 }
2325 argc -= 2; argv += 2;
2326 continue;
2327 }
2328 return -1;
2329 }
2330 if (dbg_active_attach(argc, argv) == start_ok ||
2331 dbg_active_launch(argc, argv) == start_ok)
2332 return gdb_remote(gdb_flags, port);
2333 #else
2334 fprintf(stderr, "GdbProxy mode not supported on this platform\n");
2335 #endif
2336 return -1;
2337 }
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