2 * A Win32 based proxy implementing the GBD remote protocol
3 * This allows to debug Wine (and any "emulated" program) under
6 * Copyright (c) Eric Pouech 2002-2004
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.
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.
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
23 /* Protocol specification can be found here:
24 * http://sources.redhat.com/gdb/onlinedocs/gdb_32.html
28 #include "wine/port.h"
37 #ifdef HAVE_SYS_POLL_H
38 # include <sys/poll.h>
40 #ifdef HAVE_SYS_WAIT_H
41 # include <sys/wait.h>
43 #ifdef HAVE_SYS_SOCKET_H
44 # include <sys/socket.h>
46 #ifdef HAVE_NETINET_IN_H
47 # include <netinet/in.h>
49 #ifdef HAVE_NETINET_TCP_H
50 # include <netinet/tcp.h>
56 /* if we don't have poll support on this system
57 * we won't provide gdb proxy support here...
67 #define GDBPXY_TRC_LOWLEVEL 0x01
68 #define GDBPXY_TRC_PACKET 0x02
69 #define GDBPXY_TRC_COMMAND 0x04
70 #define GDBPXY_TRC_COMMAND_ERROR 0x08
71 #define GDBPXY_TRC_WIN32_EVENT 0x10
72 #define GDBPXY_TRC_WIN32_ERROR 0x20
73 #define GDBPXY_TRC_COMMAND_FIXME 0x80
77 enum be_xpoint_type type; /* -1 means free */
90 /* split into individual packet */
98 /* generic GDB thread information */
99 struct dbg_thread* exec_thread; /* thread used in step & continue */
100 struct dbg_thread* other_thread; /* thread to be used in any other operation */
102 /* current Win32 trap env */
106 /* Win32 information */
107 struct dbg_process* process;
108 #define NUM_XPOINT 32
109 struct gdb_ctx_Xpoint Xpoints[NUM_XPOINT];
110 /* Unix environment */
111 unsigned long wine_segs[3]; /* load addresses of the ELF wine exec segments (text, bss and data) */
114 static struct be_process_io be_process_gdbproxy_io;
116 /* =============================================== *
117 * B A S I C M A N I P U L A T I O N S *
118 * =============================================== *
121 static inline int hex_from0(char ch)
123 if (ch >= '0' && ch <= '9') return ch - '0';
124 if (ch >= 'A' && ch <= 'F') return ch - 'A' + 10;
125 if (ch >= 'a' && ch <= 'f') return ch - 'a' + 10;
131 static inline unsigned char hex_to0(int x)
133 assert(x >= 0 && x < 16);
134 return "0123456789abcdef"[x];
137 static int hex_to_int(const char* src, size_t len)
139 unsigned int returnval = 0;
143 returnval |= hex_from0(*src++);
148 static void hex_from(void* dst, const char* src, size_t len)
150 unsigned char *p = dst;
153 *p++ = (hex_from0(src[0]) << 4) | hex_from0(src[1]);
158 static void hex_to(char* dst, const void* src, size_t len)
160 const unsigned char *p = src;
163 *dst++ = hex_to0(*p >> 4);
164 *dst++ = hex_to0(*p & 0x0F);
169 static unsigned char checksum(const char* ptr, int len)
174 cksum += (unsigned char)*ptr++;
178 /* =============================================== *
179 * C P U H A N D L E R S *
180 * =============================================== *
184 static size_t cpu_register_map[] = {
185 FIELD_OFFSET(CONTEXT, Eax),
186 FIELD_OFFSET(CONTEXT, Ecx),
187 FIELD_OFFSET(CONTEXT, Edx),
188 FIELD_OFFSET(CONTEXT, Ebx),
189 FIELD_OFFSET(CONTEXT, Esp),
190 FIELD_OFFSET(CONTEXT, Ebp),
191 FIELD_OFFSET(CONTEXT, Esi),
192 FIELD_OFFSET(CONTEXT, Edi),
193 FIELD_OFFSET(CONTEXT, Eip),
194 FIELD_OFFSET(CONTEXT, EFlags),
195 FIELD_OFFSET(CONTEXT, SegCs),
196 FIELD_OFFSET(CONTEXT, SegSs),
197 FIELD_OFFSET(CONTEXT, SegDs),
198 FIELD_OFFSET(CONTEXT, SegEs),
199 FIELD_OFFSET(CONTEXT, SegFs),
200 FIELD_OFFSET(CONTEXT, SegGs),
202 #elif defined(__powerpc__)
203 static size_t cpu_register_map[] = {
204 FIELD_OFFSET(CONTEXT, Gpr0),
205 FIELD_OFFSET(CONTEXT, Gpr1),
206 FIELD_OFFSET(CONTEXT, Gpr2),
207 FIELD_OFFSET(CONTEXT, Gpr3),
208 FIELD_OFFSET(CONTEXT, Gpr4),
209 FIELD_OFFSET(CONTEXT, Gpr5),
210 FIELD_OFFSET(CONTEXT, Gpr6),
211 FIELD_OFFSET(CONTEXT, Gpr7),
212 FIELD_OFFSET(CONTEXT, Gpr8),
213 FIELD_OFFSET(CONTEXT, Gpr9),
214 FIELD_OFFSET(CONTEXT, Gpr10),
215 FIELD_OFFSET(CONTEXT, Gpr11),
216 FIELD_OFFSET(CONTEXT, Gpr12),
217 FIELD_OFFSET(CONTEXT, Gpr13),
218 FIELD_OFFSET(CONTEXT, Gpr14),
219 FIELD_OFFSET(CONTEXT, Gpr15),
220 FIELD_OFFSET(CONTEXT, Gpr16),
221 FIELD_OFFSET(CONTEXT, Gpr17),
222 FIELD_OFFSET(CONTEXT, Gpr18),
223 FIELD_OFFSET(CONTEXT, Gpr19),
224 FIELD_OFFSET(CONTEXT, Gpr20),
225 FIELD_OFFSET(CONTEXT, Gpr21),
226 FIELD_OFFSET(CONTEXT, Gpr22),
227 FIELD_OFFSET(CONTEXT, Gpr23),
228 FIELD_OFFSET(CONTEXT, Gpr24),
229 FIELD_OFFSET(CONTEXT, Gpr25),
230 FIELD_OFFSET(CONTEXT, Gpr26),
231 FIELD_OFFSET(CONTEXT, Gpr27),
232 FIELD_OFFSET(CONTEXT, Gpr28),
233 FIELD_OFFSET(CONTEXT, Gpr29),
234 FIELD_OFFSET(CONTEXT, Gpr30),
235 FIELD_OFFSET(CONTEXT, Gpr31),
236 FIELD_OFFSET(CONTEXT, Fpr0),
237 FIELD_OFFSET(CONTEXT, Fpr1),
238 FIELD_OFFSET(CONTEXT, Fpr2),
239 FIELD_OFFSET(CONTEXT, Fpr3),
240 FIELD_OFFSET(CONTEXT, Fpr4),
241 FIELD_OFFSET(CONTEXT, Fpr5),
242 FIELD_OFFSET(CONTEXT, Fpr6),
243 FIELD_OFFSET(CONTEXT, Fpr7),
244 FIELD_OFFSET(CONTEXT, Fpr8),
245 FIELD_OFFSET(CONTEXT, Fpr9),
246 FIELD_OFFSET(CONTEXT, Fpr10),
247 FIELD_OFFSET(CONTEXT, Fpr11),
248 FIELD_OFFSET(CONTEXT, Fpr12),
249 FIELD_OFFSET(CONTEXT, Fpr13),
250 FIELD_OFFSET(CONTEXT, Fpr14),
251 FIELD_OFFSET(CONTEXT, Fpr15),
252 FIELD_OFFSET(CONTEXT, Fpr16),
253 FIELD_OFFSET(CONTEXT, Fpr17),
254 FIELD_OFFSET(CONTEXT, Fpr18),
255 FIELD_OFFSET(CONTEXT, Fpr19),
256 FIELD_OFFSET(CONTEXT, Fpr20),
257 FIELD_OFFSET(CONTEXT, Fpr21),
258 FIELD_OFFSET(CONTEXT, Fpr22),
259 FIELD_OFFSET(CONTEXT, Fpr23),
260 FIELD_OFFSET(CONTEXT, Fpr24),
261 FIELD_OFFSET(CONTEXT, Fpr25),
262 FIELD_OFFSET(CONTEXT, Fpr26),
263 FIELD_OFFSET(CONTEXT, Fpr27),
264 FIELD_OFFSET(CONTEXT, Fpr28),
265 FIELD_OFFSET(CONTEXT, Fpr29),
266 FIELD_OFFSET(CONTEXT, Fpr30),
267 FIELD_OFFSET(CONTEXT, Fpr31),
269 FIELD_OFFSET(CONTEXT, Iar),
270 FIELD_OFFSET(CONTEXT, Msr),
271 FIELD_OFFSET(CONTEXT, Cr),
272 FIELD_OFFSET(CONTEXT, Lr),
273 FIELD_OFFSET(CONTEXT, Ctr),
274 FIELD_OFFSET(CONTEXT, Xer),
275 /* FIXME: MQ is missing? FIELD_OFFSET(CONTEXT, Mq), */
276 /* see gdb/nlm/ppc.c */
278 #elif defined(__ALPHA__)
279 static size_t cpu_register_map[] = {
280 FIELD_OFFSET(CONTEXT, IntV0),
281 FIELD_OFFSET(CONTEXT, IntT0),
282 FIELD_OFFSET(CONTEXT, IntT1),
283 FIELD_OFFSET(CONTEXT, IntT2),
284 FIELD_OFFSET(CONTEXT, IntT3),
285 FIELD_OFFSET(CONTEXT, IntT4),
286 FIELD_OFFSET(CONTEXT, IntT5),
287 FIELD_OFFSET(CONTEXT, IntT6),
288 FIELD_OFFSET(CONTEXT, IntT7),
289 FIELD_OFFSET(CONTEXT, IntS0),
290 FIELD_OFFSET(CONTEXT, IntS1),
291 FIELD_OFFSET(CONTEXT, IntS2),
292 FIELD_OFFSET(CONTEXT, IntS3),
293 FIELD_OFFSET(CONTEXT, IntS4),
294 FIELD_OFFSET(CONTEXT, IntS5),
295 FIELD_OFFSET(CONTEXT, IntFp),
296 FIELD_OFFSET(CONTEXT, IntA0),
297 FIELD_OFFSET(CONTEXT, IntA1),
298 FIELD_OFFSET(CONTEXT, IntA2),
299 FIELD_OFFSET(CONTEXT, IntA3),
300 FIELD_OFFSET(CONTEXT, IntA4),
301 FIELD_OFFSET(CONTEXT, IntA5),
302 FIELD_OFFSET(CONTEXT, IntT8),
303 FIELD_OFFSET(CONTEXT, IntT9),
304 FIELD_OFFSET(CONTEXT, IntT10),
305 FIELD_OFFSET(CONTEXT, IntT11),
306 FIELD_OFFSET(CONTEXT, IntRa),
307 FIELD_OFFSET(CONTEXT, IntT12),
308 FIELD_OFFSET(CONTEXT, IntAt),
309 FIELD_OFFSET(CONTEXT, IntGp),
310 FIELD_OFFSET(CONTEXT, IntSp),
311 FIELD_OFFSET(CONTEXT, IntZero),
312 FIELD_OFFSET(CONTEXT, FltF0),
313 FIELD_OFFSET(CONTEXT, FltF1),
314 FIELD_OFFSET(CONTEXT, FltF2),
315 FIELD_OFFSET(CONTEXT, FltF3),
316 FIELD_OFFSET(CONTEXT, FltF4),
317 FIELD_OFFSET(CONTEXT, FltF5),
318 FIELD_OFFSET(CONTEXT, FltF6),
319 FIELD_OFFSET(CONTEXT, FltF7),
320 FIELD_OFFSET(CONTEXT, FltF8),
321 FIELD_OFFSET(CONTEXT, FltF9),
322 FIELD_OFFSET(CONTEXT, FltF10),
323 FIELD_OFFSET(CONTEXT, FltF11),
324 FIELD_OFFSET(CONTEXT, FltF12),
325 FIELD_OFFSET(CONTEXT, FltF13),
326 FIELD_OFFSET(CONTEXT, FltF14),
327 FIELD_OFFSET(CONTEXT, FltF15),
328 FIELD_OFFSET(CONTEXT, FltF16),
329 FIELD_OFFSET(CONTEXT, FltF17),
330 FIELD_OFFSET(CONTEXT, FltF18),
331 FIELD_OFFSET(CONTEXT, FltF19),
332 FIELD_OFFSET(CONTEXT, FltF20),
333 FIELD_OFFSET(CONTEXT, FltF21),
334 FIELD_OFFSET(CONTEXT, FltF22),
335 FIELD_OFFSET(CONTEXT, FltF23),
336 FIELD_OFFSET(CONTEXT, FltF24),
337 FIELD_OFFSET(CONTEXT, FltF25),
338 FIELD_OFFSET(CONTEXT, FltF26),
339 FIELD_OFFSET(CONTEXT, FltF27),
340 FIELD_OFFSET(CONTEXT, FltF28),
341 FIELD_OFFSET(CONTEXT, FltF29),
342 FIELD_OFFSET(CONTEXT, FltF30),
343 FIELD_OFFSET(CONTEXT, FltF31),
345 /* FIXME: Didn't look for the right order yet */
346 FIELD_OFFSET(CONTEXT, Fir),
347 FIELD_OFFSET(CONTEXT, Fpcr),
348 FIELD_OFFSET(CONTEXT, SoftFpcr),
350 #elif defined(__x86_64__)
351 static size_t cpu_register_map[] = {
352 FIELD_OFFSET(CONTEXT, Rax),
353 FIELD_OFFSET(CONTEXT, Rbx),
354 FIELD_OFFSET(CONTEXT, Rcx),
355 FIELD_OFFSET(CONTEXT, Rdx),
356 FIELD_OFFSET(CONTEXT, Rsi),
357 FIELD_OFFSET(CONTEXT, Rdi),
358 FIELD_OFFSET(CONTEXT, Rbp),
359 FIELD_OFFSET(CONTEXT, Rsp),
360 FIELD_OFFSET(CONTEXT, R8),
361 FIELD_OFFSET(CONTEXT, R9),
362 FIELD_OFFSET(CONTEXT, R10),
363 FIELD_OFFSET(CONTEXT, R11),
364 FIELD_OFFSET(CONTEXT, R12),
365 FIELD_OFFSET(CONTEXT, R13),
366 FIELD_OFFSET(CONTEXT, R14),
367 FIELD_OFFSET(CONTEXT, R15),
368 FIELD_OFFSET(CONTEXT, Rip),
369 FIELD_OFFSET(CONTEXT, EFlags),
370 FIELD_OFFSET(CONTEXT, SegCs),
371 FIELD_OFFSET(CONTEXT, SegSs),
372 FIELD_OFFSET(CONTEXT, SegDs),
373 FIELD_OFFSET(CONTEXT, SegEs),
374 FIELD_OFFSET(CONTEXT, SegFs),
375 FIELD_OFFSET(CONTEXT, SegGs),
378 # error Define the registers map for your CPU
381 static const size_t cpu_num_regs = (sizeof(cpu_register_map) / sizeof(cpu_register_map[0]));
383 static inline unsigned long* cpu_register(CONTEXT* ctx, unsigned idx)
385 assert(idx < cpu_num_regs);
386 return (unsigned long*)((char*)ctx + cpu_register_map[idx]);
389 /* =============================================== *
390 * W I N 3 2 D E B U G I N T E R F A C E *
391 * =============================================== *
394 static BOOL fetch_context(struct gdb_context* gdbctx, HANDLE h, CONTEXT* ctx)
396 ctx->ContextFlags = CONTEXT_CONTROL
398 #ifdef CONTEXT_SEGMENTS
401 #ifdef CONTEXT_DEBUG_REGISTERS
402 | CONTEXT_DEBUG_REGISTERS
405 if (!GetThreadContext(h, ctx))
407 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
408 fprintf(stderr, "Can't get thread's context\n");
414 static BOOL handle_exception(struct gdb_context* gdbctx, EXCEPTION_DEBUG_INFO* exc)
416 EXCEPTION_RECORD* rec = &exc->ExceptionRecord;
419 switch (rec->ExceptionCode)
421 case EXCEPTION_ACCESS_VIOLATION:
422 case EXCEPTION_PRIV_INSTRUCTION:
423 case EXCEPTION_STACK_OVERFLOW:
424 case EXCEPTION_GUARD_PAGE:
425 gdbctx->last_sig = SIGSEGV;
428 case EXCEPTION_DATATYPE_MISALIGNMENT:
429 gdbctx->last_sig = SIGBUS;
432 case EXCEPTION_SINGLE_STEP:
434 case EXCEPTION_BREAKPOINT:
435 gdbctx->last_sig = SIGTRAP;
438 case EXCEPTION_FLT_DENORMAL_OPERAND:
439 case EXCEPTION_FLT_DIVIDE_BY_ZERO:
440 case EXCEPTION_FLT_INEXACT_RESULT:
441 case EXCEPTION_FLT_INVALID_OPERATION:
442 case EXCEPTION_FLT_OVERFLOW:
443 case EXCEPTION_FLT_STACK_CHECK:
444 case EXCEPTION_FLT_UNDERFLOW:
445 gdbctx->last_sig = SIGFPE;
448 case EXCEPTION_INT_DIVIDE_BY_ZERO:
449 case EXCEPTION_INT_OVERFLOW:
450 gdbctx->last_sig = SIGFPE;
453 case EXCEPTION_ILLEGAL_INSTRUCTION:
454 gdbctx->last_sig = SIGILL;
458 gdbctx->last_sig = SIGINT;
461 case STATUS_POSSIBLE_DEADLOCK:
462 gdbctx->last_sig = SIGALRM;
464 /* FIXME: we could also add here a O packet with additional information */
467 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
468 fprintf(stderr, "Unhandled exception code 0x%08lx\n", rec->ExceptionCode);
469 gdbctx->last_sig = SIGABRT;
476 static void handle_debug_event(struct gdb_context* gdbctx, DEBUG_EVENT* de)
480 dbg_curr_thread = dbg_get_thread(gdbctx->process, de->dwThreadId);
482 switch (de->dwDebugEventCode)
484 case CREATE_PROCESS_DEBUG_EVENT:
485 gdbctx->process = dbg_add_process(&be_process_gdbproxy_io, de->dwProcessId,
486 de->u.CreateProcessInfo.hProcess);
487 if (!gdbctx->process) break;
488 memory_get_string_indirect(gdbctx->process,
489 de->u.CreateProcessInfo.lpImageName,
490 de->u.CreateProcessInfo.fUnicode,
491 buffer, sizeof(buffer));
492 dbg_set_process_name(gdbctx->process, buffer);
494 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
495 fprintf(stderr, "%08lx:%08lx: create process '%s'/%p @%08lx (%ld<%ld>)\n",
496 de->dwProcessId, de->dwThreadId,
497 buffer, de->u.CreateProcessInfo.lpImageName,
498 (unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress,
499 de->u.CreateProcessInfo.dwDebugInfoFileOffset,
500 de->u.CreateProcessInfo.nDebugInfoSize);
502 /* de->u.CreateProcessInfo.lpStartAddress; */
503 if (!SymInitialize(gdbctx->process->handle, NULL, TRUE))
504 fprintf(stderr, "Couldn't initiate DbgHelp\n");
506 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
507 fprintf(stderr, "%08lx:%08lx: create thread I @%08lx\n",
508 de->dwProcessId, de->dwThreadId,
509 (unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress);
511 assert(dbg_curr_thread == NULL); /* shouldn't be there */
512 dbg_add_thread(gdbctx->process, de->dwThreadId,
513 de->u.CreateProcessInfo.hThread,
514 de->u.CreateProcessInfo.lpThreadLocalBase);
517 case LOAD_DLL_DEBUG_EVENT:
518 assert(dbg_curr_thread);
519 memory_get_string_indirect(gdbctx->process,
520 de->u.LoadDll.lpImageName,
521 de->u.LoadDll.fUnicode,
522 buffer, sizeof(buffer));
523 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
524 fprintf(stderr, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
525 de->dwProcessId, de->dwThreadId,
526 buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
527 de->u.LoadDll.dwDebugInfoFileOffset,
528 de->u.LoadDll.nDebugInfoSize);
529 SymLoadModule(gdbctx->process->handle, de->u.LoadDll.hFile, buffer, NULL,
530 (unsigned long)de->u.LoadDll.lpBaseOfDll, 0);
533 case UNLOAD_DLL_DEBUG_EVENT:
534 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
535 fprintf(stderr, "%08lx:%08lx: unload DLL @%08lx\n",
536 de->dwProcessId, de->dwThreadId, (unsigned long)de->u.UnloadDll.lpBaseOfDll);
537 SymUnloadModule(gdbctx->process->handle,
538 (unsigned long)de->u.UnloadDll.lpBaseOfDll);
541 case EXCEPTION_DEBUG_EVENT:
542 assert(dbg_curr_thread);
543 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
544 fprintf(stderr, "%08lx:%08lx: exception code=0x%08lx\n",
545 de->dwProcessId, de->dwThreadId,
546 de->u.Exception.ExceptionRecord.ExceptionCode);
548 if (fetch_context(gdbctx, dbg_curr_thread->handle, &gdbctx->context))
550 gdbctx->in_trap = handle_exception(gdbctx, &de->u.Exception);
554 case CREATE_THREAD_DEBUG_EVENT:
555 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
556 fprintf(stderr, "%08lx:%08lx: create thread D @%08lx\n",
557 de->dwProcessId, de->dwThreadId, (unsigned long)(void*)de->u.CreateThread.lpStartAddress);
559 dbg_add_thread(gdbctx->process,
561 de->u.CreateThread.hThread,
562 de->u.CreateThread.lpThreadLocalBase);
565 case EXIT_THREAD_DEBUG_EVENT:
566 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
567 fprintf(stderr, "%08lx:%08lx: exit thread (%ld)\n",
568 de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
570 assert(dbg_curr_thread);
571 if (dbg_curr_thread == gdbctx->exec_thread) gdbctx->exec_thread = NULL;
572 if (dbg_curr_thread == gdbctx->other_thread) gdbctx->other_thread = NULL;
573 dbg_del_thread(dbg_curr_thread);
576 case EXIT_PROCESS_DEBUG_EVENT:
577 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
578 fprintf(stderr, "%08lx:%08lx: exit process (%ld)\n",
579 de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
581 dbg_del_process(gdbctx->process);
582 gdbctx->process = NULL;
583 /* now signal gdb that we're done */
584 gdbctx->last_sig = SIGTERM;
585 gdbctx->in_trap = TRUE;
588 case OUTPUT_DEBUG_STRING_EVENT:
589 assert(dbg_curr_thread);
590 memory_get_string(gdbctx->process,
591 de->u.DebugString.lpDebugStringData, TRUE,
592 de->u.DebugString.fUnicode, buffer, sizeof(buffer));
593 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
594 fprintf(stderr, "%08lx:%08lx: output debug string (%s)\n",
595 de->dwProcessId, de->dwThreadId, buffer);
599 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
600 fprintf(stderr, "%08lx:%08lx: rip error=%ld type=%ld\n",
601 de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
602 de->u.RipInfo.dwType);
606 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
607 fprintf(stderr, "%08lx:%08lx: unknown event (%ld)\n",
608 de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
612 static void resume_debuggee(struct gdb_context* gdbctx, unsigned long cont)
616 if (!SetThreadContext(dbg_curr_thread->handle, &gdbctx->context))
617 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
618 fprintf(stderr, "Cannot set context on thread %lu\n", dbg_curr_thread->tid);
619 if (!ContinueDebugEvent(gdbctx->process->pid, dbg_curr_thread->tid, cont))
620 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
621 fprintf(stderr, "Cannot continue on %lu (%lu)\n",
622 dbg_curr_thread->tid, cont);
624 else if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
625 fprintf(stderr, "Cannot find last thread\n");
629 static void resume_debuggee_thread(struct gdb_context* gdbctx, unsigned long cont, unsigned int threadid)
634 if(dbg_curr_thread->tid == threadid){
635 /* Windows debug and GDB don't seem to work well here, windows only likes ContinueDebugEvent being used on the reporter of the event */
636 if (!SetThreadContext(dbg_curr_thread->handle, &gdbctx->context))
637 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
638 fprintf(stderr, "Cannot set context on thread %lu\n", dbg_curr_thread->tid);
639 if (!ContinueDebugEvent(gdbctx->process->pid, dbg_curr_thread->tid, cont))
640 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
641 fprintf(stderr, "Cannot continue on %lu (%lu)\n",
642 dbg_curr_thread->tid, cont);
645 else if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
646 fprintf(stderr, "Cannot find last thread\n");
649 static BOOL check_for_interrupt(struct gdb_context* gdbctx)
651 struct pollfd pollfd;
655 pollfd.fd = gdbctx->sock;
656 pollfd.events = POLLIN;
659 if ((ret = poll(&pollfd, 1, 0)) == 1) {
660 ret = read(gdbctx->sock, &pkt, 1);
662 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR) {
663 fprintf(stderr, "read failed\n");
668 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR) {
669 fprintf(stderr, "Unexpected break packet (%c/0x%X)\n", pkt, pkt);
674 } else if (ret == -1) {
675 fprintf(stderr, "poll failed\n");
680 static void wait_for_debuggee(struct gdb_context* gdbctx)
684 gdbctx->in_trap = FALSE;
687 if (!WaitForDebugEvent(&de, 10))
689 if (GetLastError() == ERROR_SEM_TIMEOUT)
691 if (check_for_interrupt(gdbctx)) {
692 if (!DebugBreakProcess(gdbctx->process->handle)) {
693 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR) {
694 fprintf(stderr, "Failed to break into debugee\n");
698 WaitForDebugEvent(&de, INFINITE);
706 handle_debug_event(gdbctx, &de);
707 assert(!gdbctx->process ||
708 gdbctx->process->pid == 0 ||
709 de.dwProcessId == gdbctx->process->pid);
710 assert(!dbg_curr_thread || de.dwThreadId == dbg_curr_thread->tid);
711 if (gdbctx->in_trap) break;
712 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
716 static void detach_debuggee(struct gdb_context* gdbctx, BOOL kill)
718 be_cpu->single_step(&gdbctx->context, FALSE);
719 resume_debuggee(gdbctx, DBG_CONTINUE);
721 DebugActiveProcessStop(gdbctx->process->pid);
722 dbg_del_process(gdbctx->process);
723 gdbctx->process = NULL;
726 static void get_process_info(struct gdb_context* gdbctx, char* buffer, size_t len)
728 unsigned long status;
730 if (!GetExitCodeProcess(gdbctx->process->handle, &status))
732 strcpy(buffer, "Unknown process");
735 if (status == STILL_ACTIVE)
737 strcpy(buffer, "Running");
740 snprintf(buffer, len, "Terminated (%lu)", status);
742 switch (GetPriorityClass(gdbctx->process->handle))
745 #ifdef ABOVE_NORMAL_PRIORITY_CLASS
746 case ABOVE_NORMAL_PRIORITY_CLASS: strcat(buffer, ", above normal priority"); break;
748 #ifdef BELOW_NORMAL_PRIORITY_CLASS
749 case BELOW_NORMAL_PRIORITY_CLASS: strcat(buffer, ", below normal priotity"); break;
751 case HIGH_PRIORITY_CLASS: strcat(buffer, ", high priority"); break;
752 case IDLE_PRIORITY_CLASS: strcat(buffer, ", idle priority"); break;
753 case NORMAL_PRIORITY_CLASS: strcat(buffer, ", normal priority"); break;
754 case REALTIME_PRIORITY_CLASS: strcat(buffer, ", realtime priority"); break;
756 strcat(buffer, "\n");
759 static void get_thread_info(struct gdb_context* gdbctx, unsigned tid,
760 char* buffer, size_t len)
762 struct dbg_thread* thd;
763 unsigned long status;
766 /* FIXME: use the size of buffer */
767 thd = dbg_get_thread(gdbctx->process, tid);
770 strcpy(buffer, "No information");
773 if (GetExitCodeThread(thd->handle, &status))
775 if (status == STILL_ACTIVE)
777 /* FIXME: this is a bit brutal... some nicer way shall be found */
778 switch (status = SuspendThread(thd->handle))
781 case 0: strcpy(buffer, "Running"); break;
782 default: snprintf(buffer, len, "Suspended (%lu)", status - 1);
784 ResumeThread(thd->handle);
787 snprintf(buffer, len, "Terminated (exit code = %lu)", status);
791 strcpy(buffer, "Unknown threadID");
793 switch (prio = GetThreadPriority(thd->handle))
795 case THREAD_PRIORITY_ERROR_RETURN: break;
796 case THREAD_PRIORITY_ABOVE_NORMAL: strcat(buffer, ", priority +1 above normal"); break;
797 case THREAD_PRIORITY_BELOW_NORMAL: strcat(buffer, ", priority -1 below normal"); break;
798 case THREAD_PRIORITY_HIGHEST: strcat(buffer, ", priority +2 above normal"); break;
799 case THREAD_PRIORITY_LOWEST: strcat(buffer, ", priority -2 below normal"); break;
800 case THREAD_PRIORITY_IDLE: strcat(buffer, ", priority idle"); break;
801 case THREAD_PRIORITY_NORMAL: strcat(buffer, ", priority normal"); break;
802 case THREAD_PRIORITY_TIME_CRITICAL: strcat(buffer, ", priority time-critical"); break;
803 default: snprintf(buffer + strlen(buffer), len - strlen(buffer), ", priority = %d", prio);
805 assert(strlen(buffer) < len);
808 /* =============================================== *
809 * P A C K E T U T I L S *
810 * =============================================== *
813 enum packet_return {packet_error = 0x00, packet_ok = 0x01, packet_done = 0x02,
814 packet_last_f = 0x80};
816 static void packet_reply_grow(struct gdb_context* gdbctx, size_t size)
818 if (gdbctx->out_buf_alloc < gdbctx->out_len + size)
820 gdbctx->out_buf_alloc = ((gdbctx->out_len + size) / 32 + 1) * 32;
821 gdbctx->out_buf = realloc(gdbctx->out_buf, gdbctx->out_buf_alloc);
825 static void packet_reply_hex_to(struct gdb_context* gdbctx, const void* src, int len)
827 packet_reply_grow(gdbctx, len * 2);
828 hex_to(&gdbctx->out_buf[gdbctx->out_len], src, len);
829 gdbctx->out_len += len * 2;
832 static inline void packet_reply_hex_to_str(struct gdb_context* gdbctx, const char* src)
834 packet_reply_hex_to(gdbctx, src, strlen(src));
837 static void packet_reply_val(struct gdb_context* gdbctx, unsigned long val, int len)
841 shift = (len - 1) * 8;
842 packet_reply_grow(gdbctx, len * 2);
843 for (i = 0; i < len; i++, shift -= 8)
845 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> (shift + 4)) & 0x0F);
846 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> shift ) & 0x0F);
850 static inline void packet_reply_add(struct gdb_context* gdbctx, const char* str, int len)
852 packet_reply_grow(gdbctx, len);
853 memcpy(&gdbctx->out_buf[gdbctx->out_len], str, len);
854 gdbctx->out_len += len;
857 static inline void packet_reply_cat(struct gdb_context* gdbctx, const char* str)
859 packet_reply_add(gdbctx, str, strlen(str));
862 static inline void packet_reply_catc(struct gdb_context* gdbctx, char ch)
864 packet_reply_add(gdbctx, &ch, 1);
867 static void packet_reply_open(struct gdb_context* gdbctx)
869 assert(gdbctx->out_curr_packet == -1);
870 packet_reply_catc(gdbctx, '$');
871 gdbctx->out_curr_packet = gdbctx->out_len;
874 static void packet_reply_close(struct gdb_context* gdbctx)
879 plen = gdbctx->out_len - gdbctx->out_curr_packet;
880 packet_reply_catc(gdbctx, '#');
881 cksum = checksum(&gdbctx->out_buf[gdbctx->out_curr_packet], plen);
882 packet_reply_hex_to(gdbctx, &cksum, 1);
883 if (gdbctx->trace & GDBPXY_TRC_PACKET)
884 fprintf(stderr, "Reply : %*.*s\n",
885 plen, plen, &gdbctx->out_buf[gdbctx->out_curr_packet]);
886 gdbctx->out_curr_packet = -1;
889 static enum packet_return packet_reply(struct gdb_context* gdbctx, const char* packet, int len)
891 packet_reply_open(gdbctx);
893 if (len == -1) len = strlen(packet);
894 assert(memchr(packet, '$', len) == NULL && memchr(packet, '#', len) == NULL);
896 packet_reply_add(gdbctx, packet, len);
898 packet_reply_close(gdbctx);
903 static enum packet_return packet_reply_error(struct gdb_context* gdbctx, int error)
905 packet_reply_open(gdbctx);
907 packet_reply_add(gdbctx, "E", 1);
908 packet_reply_val(gdbctx, error, 1);
910 packet_reply_close(gdbctx);
915 /* =============================================== *
916 * P A C K E T H A N D L E R S *
917 * =============================================== *
920 static enum packet_return packet_reply_status(struct gdb_context* gdbctx)
922 enum packet_return ret = packet_done;
924 packet_reply_open(gdbctx);
926 if (gdbctx->process != NULL)
931 packet_reply_catc(gdbctx, 'T');
932 sig = gdbctx->last_sig;
933 packet_reply_val(gdbctx, sig, 1);
934 packet_reply_add(gdbctx, "thread:", 7);
935 packet_reply_val(gdbctx, dbg_curr_thread->tid, 4);
936 packet_reply_catc(gdbctx, ';');
938 for (i = 0; i < cpu_num_regs; i++)
940 /* FIXME: this call will also grow the buffer...
941 * unneeded, but not harmful
943 packet_reply_val(gdbctx, i, 1);
944 packet_reply_catc(gdbctx, ':');
945 packet_reply_hex_to(gdbctx, cpu_register(&gdbctx->context, i), 4);
946 packet_reply_catc(gdbctx, ';');
951 /* Try to put an exit code
952 * Cannot use GetExitCodeProcess, wouldn't fit in a 8 bit value, so
953 * just indicate the end of process and exit */
954 packet_reply_add(gdbctx, "W00", 3);
955 /*if (!gdbctx->extended)*/ ret |= packet_last_f;
958 packet_reply_close(gdbctx);
964 static enum packet_return packet_extended(struct gdb_context* gdbctx)
966 gdbctx->extended = 1;
971 static enum packet_return packet_last_signal(struct gdb_context* gdbctx)
973 assert(gdbctx->in_packet_len == 0);
974 return packet_reply_status(gdbctx);
977 static enum packet_return packet_continue(struct gdb_context* gdbctx)
979 /* FIXME: add support for address in packet */
980 assert(gdbctx->in_packet_len == 0);
981 if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
982 if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
983 fprintf(stderr, "NIY: cont on %lu, while last thread is %lu\n",
984 gdbctx->exec_thread->tid, dbg_curr_thread->tid);
985 resume_debuggee(gdbctx, DBG_CONTINUE);
986 wait_for_debuggee(gdbctx);
987 return packet_reply_status(gdbctx);
990 static enum packet_return packet_verbose(struct gdb_context* gdbctx)
993 int defaultAction = -1; /* magic non action */
996 int actionIndex[20]; /* allow for up to 20 actions */
999 unsigned int threadIDs[100]; /* TODO: Should make this dynamic */
1000 unsigned int threadID = 0;
1001 struct dbg_thread* thd;
1004 assert(gdbctx->in_packet_len >= 4);
1006 /* OK we have vCont followed by..
1008 * c for packet_continue
1009 * Csig for packet_continue_signal
1011 * Ssig for step signal
1012 * and then an optional thread ID at the end..
1013 * *******************************************/
1015 fprintf(stderr, "trying to process a verbose packet\n");
1016 /* now check that we've got Cont */
1017 assert(strncmp(gdbctx->in_packet, "Cont", 4) == 0);
1020 if (gdbctx->in_packet[4] == '?')
1025 The vCont packet is supported. Each action is a supported command in the vCont packet.
1027 The vCont packet is not supported. (this didn't seem to be obeyed!)
1029 packet_reply_open(gdbctx);
1030 packet_reply_add(gdbctx, "vCont", 5);
1031 /* add all the supported actions to the reply (all of them for now) */
1032 packet_reply_add(gdbctx, ";c", 2);
1033 packet_reply_add(gdbctx, ";C", 2);
1034 packet_reply_add(gdbctx, ";s", 2);
1035 packet_reply_add(gdbctx, ";S", 2);
1036 packet_reply_close(gdbctx);
1040 /* This may not be the 'fastest' code in the world. but it should be nice and easy to debug.
1041 (as it's run when people are debugging break points I'm sure they won't notice the extra 100 cycles anyway)
1042 now if only gdb talked XML.... */
1043 #if 0 /* handy for debugging */
1044 fprintf(stderr, "no, but can we find a default packet %.*s %d\n", gdbctx->in_packet_len, gdbctx->in_packet, gdbctx->in_packet_len);
1047 /* go through the packet and identify where all the actions start at */
1048 for (i = 4; i < gdbctx->in_packet_len - 1; i++)
1050 if (gdbctx->in_packet[i] == ';')
1052 threadIndex[actions] = 0;
1053 actionIndex[actions++] = i;
1055 else if (gdbctx->in_packet[i] == ':')
1057 threadIndex[actions - 1] = i;
1061 /* now look up the default action */
1062 for (i = 0 ; i < actions; i++)
1064 if (threadIndex[i] == 0)
1066 if (defaultAction != -1)
1068 fprintf(stderr,"Too many default actions specified\n");
1069 return packet_error;
1075 /* Now, I have this default action thing that needs to be applied to all non counted threads */
1077 /* go through all the threads and stick their ids in the to be done list. */
1078 for (thd = gdbctx->process->threads; thd; thd = thd->next)
1080 threadIDs[threadCount++] = thd->tid;
1081 /* check to see if we have more threads than I counted on, and tell the user what to do
1082 * (they're running winedbg, so I'm sure they can fix the problem from the error message!) */
1083 if (threadCount == 100)
1085 fprintf(stderr, "Wow, that's a lot of threads, change threadIDs in wine/programms/winedgb/gdbproxy.c to be higher\n");
1090 /* Ok, now we have... actionIndex full of actions and we know what threads there are, so all
1091 * that remains is to apply the actions to the threads and the default action to any threads
1093 if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
1094 if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
1095 fprintf(stderr, "NIY: cont on %lu, while last thread is %lu\n",
1096 gdbctx->exec_thread->tid, dbg_curr_thread->tid);
1098 /* deal with the threaded stuff first */
1099 for (i = 0; i < actions ; i++)
1101 if (threadIndex[i] != 0)
1103 int j, idLength = 0;
1104 if (i < actions - 1)
1106 idLength = (actionIndex[i+1] - threadIndex[i]) - 1;
1110 idLength = (gdbctx->in_packet_len - threadIndex[i]) - 1;
1113 threadID = hex_to_int(gdbctx->in_packet + threadIndex[i] + 1 , idLength);
1114 /* process the action */
1115 switch (gdbctx->in_packet[actionIndex[i] + 1])
1117 case 's': /* step */
1118 be_cpu->single_step(&gdbctx->context, TRUE);
1120 case 'c': /* continue */
1121 resume_debuggee_thread(gdbctx, DBG_CONTINUE, threadID);
1123 case 'S': /* step Sig, */
1124 be_cpu->single_step(&gdbctx->context, TRUE);
1126 case 'C': /* continue sig */
1127 hex_from(&sig, gdbctx->in_packet + actionIndex[i] + 2, 1);
1128 /* cannot change signals on the fly */
1129 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1130 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1131 if (sig != gdbctx->last_sig)
1132 return packet_error;
1133 resume_debuggee_thread(gdbctx, DBG_EXCEPTION_NOT_HANDLED, threadID);
1136 for (j = 0 ; j < threadCount; j++)
1138 if (threadIDs[j] == threadID)
1145 } /* for i=0 ; i< actions */
1147 /* now we have manage the default action */
1148 if (defaultAction >= 0)
1150 for (i = 0 ; i< threadCount; i++)
1152 /* check to see if we've already done something to the thread*/
1153 if (threadIDs[i] != 0)
1155 /* if not apply the default action*/
1156 threadID = threadIDs[i];
1157 /* process the action (yes this is almost identical to the one above!) */
1158 switch (gdbctx->in_packet[actionIndex[defaultAction] + 1])
1160 case 's': /* step */
1161 be_cpu->single_step(&gdbctx->context, TRUE);
1163 case 'c': /* continue */
1164 resume_debuggee_thread(gdbctx, DBG_CONTINUE, threadID);
1167 be_cpu->single_step(&gdbctx->context, TRUE);
1169 case 'C': /* continue sig */
1170 hex_from(&sig, gdbctx->in_packet + actionIndex[defaultAction] + 2, 1);
1171 /* cannot change signals on the fly */
1172 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1173 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1174 if (sig != gdbctx->last_sig)
1175 return packet_error;
1176 resume_debuggee_thread(gdbctx, DBG_EXCEPTION_NOT_HANDLED, threadID);
1181 } /* if(defaultAction >=0) */
1183 wait_for_debuggee(gdbctx);
1184 be_cpu->single_step(&gdbctx->context, FALSE);
1185 return packet_reply_status(gdbctx);
1188 static enum packet_return packet_continue_signal(struct gdb_context* gdbctx)
1192 /* FIXME: add support for address in packet */
1193 assert(gdbctx->in_packet_len == 2);
1194 if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
1195 if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
1196 fprintf(stderr, "NIY: cont/sig on %lu, while last thread is %lu\n",
1197 gdbctx->exec_thread->tid, dbg_curr_thread->tid);
1198 hex_from(&sig, gdbctx->in_packet, 1);
1199 /* cannot change signals on the fly */
1200 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1201 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1202 if (sig != gdbctx->last_sig)
1203 return packet_error;
1204 resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
1205 wait_for_debuggee(gdbctx);
1206 return packet_reply_status(gdbctx);
1209 static enum packet_return packet_detach(struct gdb_context* gdbctx)
1211 detach_debuggee(gdbctx, FALSE);
1212 return packet_ok | packet_last_f;
1215 static enum packet_return packet_read_registers(struct gdb_context* gdbctx)
1219 CONTEXT* pctx = &gdbctx->context;
1221 assert(gdbctx->in_trap);
1223 if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
1225 if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
1226 return packet_error;
1229 packet_reply_open(gdbctx);
1230 for (i = 0; i < cpu_num_regs; i++)
1232 packet_reply_hex_to(gdbctx, cpu_register(pctx, i), 4);
1234 packet_reply_close(gdbctx);
1238 static enum packet_return packet_write_registers(struct gdb_context* gdbctx)
1242 CONTEXT* pctx = &gdbctx->context;
1244 assert(gdbctx->in_trap);
1245 if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
1247 if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
1248 return packet_error;
1250 if (gdbctx->in_packet_len < cpu_num_regs * 2) return packet_error;
1252 for (i = 0; i < cpu_num_regs; i++)
1253 hex_from(cpu_register(pctx, i), &gdbctx->in_packet[8 * i], 4);
1254 if (pctx != &gdbctx->context && !SetThreadContext(gdbctx->other_thread->handle, pctx))
1256 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
1257 fprintf(stderr, "Cannot set context on thread %lu\n", gdbctx->other_thread->tid);
1258 return packet_error;
1263 static enum packet_return packet_kill(struct gdb_context* gdbctx)
1265 detach_debuggee(gdbctx, TRUE);
1267 if (!gdbctx->extended)
1268 /* dunno whether GDB cares or not */
1272 /* assume we can't really answer something here */
1273 /* return packet_done; */
1276 static enum packet_return packet_thread(struct gdb_context* gdbctx)
1281 switch (gdbctx->in_packet[0])
1285 if (gdbctx->in_packet[1] == '-')
1286 thread = -strtol(gdbctx->in_packet + 2, &end, 16);
1288 thread = strtol(gdbctx->in_packet + 1, &end, 16);
1289 if (end == NULL || end > gdbctx->in_packet + gdbctx->in_packet_len)
1291 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1292 fprintf(stderr, "Cannot get threadid %*.*s\n",
1293 gdbctx->in_packet_len - 1, gdbctx->in_packet_len - 1,
1294 gdbctx->in_packet + 1);
1295 return packet_error;
1297 if (gdbctx->in_packet[0] == 'c')
1298 gdbctx->exec_thread = dbg_get_thread(gdbctx->process, thread);
1300 gdbctx->other_thread = dbg_get_thread(gdbctx->process, thread);
1303 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1304 fprintf(stderr, "Unknown thread sub-command %c\n", gdbctx->in_packet[0]);
1305 return packet_error;
1309 static enum packet_return packet_read_memory(struct gdb_context* gdbctx)
1312 unsigned int len, blk_len, nread;
1316 assert(gdbctx->in_trap);
1317 /* FIXME:check in_packet_len for reading %p,%x */
1318 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2) return packet_error;
1319 if (len <= 0) return packet_error;
1320 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1321 fprintf(stderr, "Read mem at %p for %u bytes\n", addr, len);
1322 for (nread = 0; nread < len; nread += r, addr += r)
1324 blk_len = min(sizeof(buffer), len - nread);
1325 if (!gdbctx->process->process_io->read(gdbctx->process->handle, addr, buffer, blk_len, &r) ||
1328 /* fail at first address, return error */
1329 if (nread == 0) return packet_reply_error(gdbctx, EFAULT);
1330 /* something has already been read, return partial information */
1333 if (nread == 0) packet_reply_open(gdbctx);
1334 packet_reply_hex_to(gdbctx, buffer, r);
1336 packet_reply_close(gdbctx);
1340 static enum packet_return packet_write_memory(struct gdb_context* gdbctx)
1343 unsigned int len, blk_len;
1348 assert(gdbctx->in_trap);
1349 ptr = memchr(gdbctx->in_packet, ':', gdbctx->in_packet_len);
1352 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1353 fprintf(stderr, "Cannot find ':' in %*.*s\n",
1354 gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
1355 return packet_error;
1359 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2)
1361 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1362 fprintf(stderr, "Cannot scan addr,len in %s\n", gdbctx->in_packet);
1363 return packet_error;
1365 if (ptr - gdbctx->in_packet + len * 2 != gdbctx->in_packet_len)
1367 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1368 fprintf(stderr, "Wrong sizes %u <> %u\n",
1369 ptr - gdbctx->in_packet + len * 2, gdbctx->in_packet_len);
1370 return packet_error;
1372 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1373 fprintf(stderr, "Write %u bytes at %p\n", len, addr);
1376 blk_len = min(sizeof(buffer), len);
1377 hex_from(buffer, ptr, blk_len);
1378 if (!gdbctx->process->process_io->write(gdbctx->process->handle, addr, buffer, blk_len, &w) ||
1385 return packet_ok; /* FIXME: error while writing ? */
1388 static enum packet_return packet_write_register(struct gdb_context* gdbctx)
1394 CONTEXT* pctx = &gdbctx->context;
1396 assert(gdbctx->in_trap);
1398 ptr = memchr(gdbctx->in_packet, '=', gdbctx->in_packet_len);
1400 reg = strtoul(gdbctx->in_packet, &end, 16);
1401 if (end == NULL || reg > cpu_num_regs)
1403 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1404 fprintf(stderr, "Invalid register index %s\n", gdbctx->in_packet);
1405 /* FIXME: if just the reg is above cpu_num_regs, don't tell gdb
1406 * it wouldn't matter too much, and it fakes our support for all regs
1408 return (end == NULL) ? packet_error : packet_ok;
1410 if (ptr + 8 - gdbctx->in_packet != gdbctx->in_packet_len)
1412 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1413 fprintf(stderr, "Wrong sizes %u <> %u\n",
1414 ptr + 8 - gdbctx->in_packet, gdbctx->in_packet_len);
1415 return packet_error;
1417 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1418 fprintf(stderr, "Writing reg %u <= %*.*s\n",
1419 reg, gdbctx->in_packet_len - (ptr - gdbctx->in_packet),
1420 gdbctx->in_packet_len - (ptr - gdbctx->in_packet), ptr);
1422 if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
1424 if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
1425 return packet_error;
1428 hex_from(cpu_register(pctx, reg), ptr, 4);
1429 if (pctx != &gdbctx->context && !SetThreadContext(gdbctx->other_thread->handle, pctx))
1431 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
1432 fprintf(stderr, "Cannot set context for thread %lu\n", gdbctx->other_thread->tid);
1433 return packet_error;
1439 static void packet_query_monitor_wnd_helper(struct gdb_context* gdbctx, HWND hWnd, int indent)
1447 if (!GetClassName(hWnd, clsName, sizeof(clsName)))
1448 strcpy(clsName, "-- Unknown --");
1449 if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
1450 strcpy(wndName, "-- Empty --");
1452 packet_reply_open(gdbctx);
1453 packet_reply_catc(gdbctx, 'O');
1454 snprintf(buffer, sizeof(buffer),
1455 "%*s%04x%*s%-17.17s %08lx %08lx %.14s\n",
1456 indent, "", (UINT)hWnd, 13 - indent, "",
1457 clsName, GetWindowLong(hWnd, GWL_STYLE),
1458 GetWindowLongPtr(hWnd, GWLP_WNDPROC), wndName);
1459 packet_reply_hex_to_str(gdbctx, buffer);
1460 packet_reply_close(gdbctx);
1462 if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
1463 packet_query_monitor_wnd_helper(gdbctx, child, indent + 1);
1464 } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
1467 static void packet_query_monitor_wnd(struct gdb_context* gdbctx, int len, const char* str)
1471 /* we do the output in several 'O' packets, with the last one being just OK for
1472 * marking the end of the output */
1473 packet_reply_open(gdbctx);
1474 packet_reply_catc(gdbctx, 'O');
1475 snprintf(buffer, sizeof(buffer),
1476 "%-16.16s %-17.17s %-8.8s %s\n",
1477 "hwnd", "Class Name", " Style", " WndProc Text");
1478 packet_reply_hex_to_str(gdbctx, buffer);
1479 packet_reply_close(gdbctx);
1481 /* FIXME: could also add a pmt to this command in str... */
1482 packet_query_monitor_wnd_helper(gdbctx, GetDesktopWindow(), 0);
1483 packet_reply(gdbctx, "OK", 2);
1486 static void packet_query_monitor_process(struct gdb_context* gdbctx, int len, const char* str)
1488 HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1491 PROCESSENTRY32 entry;
1494 if (snap == INVALID_HANDLE_VALUE)
1497 entry.dwSize = sizeof(entry);
1498 ok = Process32First(snap, &entry);
1500 /* we do the output in several 'O' packets, with the last one being just OK for
1501 * marking the end of the output */
1503 packet_reply_open(gdbctx);
1504 packet_reply_catc(gdbctx, 'O');
1505 snprintf(buffer, sizeof(buffer),
1506 " %-8.8s %-8.8s %-8.8s %s\n",
1507 "pid", "threads", "parent", "executable");
1508 packet_reply_hex_to_str(gdbctx, buffer);
1509 packet_reply_close(gdbctx);
1514 if (entry.th32ProcessID == gdbctx->process->pid) deco = '>';
1515 packet_reply_open(gdbctx);
1516 packet_reply_catc(gdbctx, 'O');
1517 snprintf(buffer, sizeof(buffer),
1518 "%c%08lx %-8ld %08lx '%s'\n",
1519 deco, entry.th32ProcessID, entry.cntThreads,
1520 entry.th32ParentProcessID, entry.szExeFile);
1521 packet_reply_hex_to_str(gdbctx, buffer);
1522 packet_reply_close(gdbctx);
1523 ok = Process32Next(snap, &entry);
1526 packet_reply(gdbctx, "OK", 2);
1529 static void packet_query_monitor_mem(struct gdb_context* gdbctx, int len, const char* str)
1531 MEMORY_BASIC_INFORMATION mbi;
1538 /* we do the output in several 'O' packets, with the last one being just OK for
1539 * marking the end of the output */
1540 packet_reply_open(gdbctx);
1541 packet_reply_catc(gdbctx, 'O');
1542 packet_reply_hex_to_str(gdbctx, "Address Size State Type RWX\n");
1543 packet_reply_close(gdbctx);
1545 while (VirtualQueryEx(gdbctx->process->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
1549 case MEM_COMMIT: state = "commit "; break;
1550 case MEM_FREE: state = "free "; break;
1551 case MEM_RESERVE: state = "reserve"; break;
1552 default: state = "??? "; break;
1554 if (mbi.State != MEM_FREE)
1558 case MEM_IMAGE: type = "image "; break;
1559 case MEM_MAPPED: type = "mapped "; break;
1560 case MEM_PRIVATE: type = "private"; break;
1561 case 0: type = " "; break;
1562 default: type = "??? "; break;
1564 memset(prot, ' ' , sizeof(prot)-1);
1565 prot[sizeof(prot)-1] = '\0';
1566 if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1568 if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
1570 if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
1572 if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1580 packet_reply_open(gdbctx);
1581 snprintf(buffer, sizeof(buffer),
1582 "%08lx %08lx %s %s %s\n",
1583 (DWORD)addr, mbi.RegionSize, state, type, prot);
1584 packet_reply_catc(gdbctx, 'O');
1585 packet_reply_hex_to_str(gdbctx, buffer);
1586 packet_reply_close(gdbctx);
1588 if (addr + mbi.RegionSize < addr) /* wrap around ? */
1590 addr += mbi.RegionSize;
1592 packet_reply(gdbctx, "OK", 2);
1595 static void packet_query_monitor_trace(struct gdb_context* gdbctx,
1596 int len, const char* str)
1602 snprintf(buffer, sizeof(buffer), "trace=%x\n", gdbctx->trace);
1604 else if (len >= 2 && str[0] == '=')
1606 unsigned val = atoi(&str[1]);
1607 snprintf(buffer, sizeof(buffer), "trace: %x => %x\n", gdbctx->trace, val);
1608 gdbctx->trace = val;
1612 /* FIXME: ugly but can use error packet here */
1613 packet_reply_cat(gdbctx, "E00");
1616 packet_reply_open(gdbctx);
1617 packet_reply_hex_to_str(gdbctx, buffer);
1618 packet_reply_close(gdbctx);
1626 void (*handler)(struct gdb_context*, int, const char*);
1629 {0, "wnd", 3, packet_query_monitor_wnd},
1630 {0, "window", 6, packet_query_monitor_wnd},
1631 {0, "proc", 4, packet_query_monitor_process},
1632 {0, "process", 7, packet_query_monitor_process},
1633 {0, "mem", 3, packet_query_monitor_mem},
1634 {1, "trace", 5, packet_query_monitor_trace},
1638 static enum packet_return packet_query_remote_command(struct gdb_context* gdbctx,
1639 const char* hxcmd, size_t len)
1642 struct query_detail* qd;
1644 assert((len & 1) == 0 && len < 2 * sizeof(buffer));
1646 hex_from(buffer, hxcmd, len);
1648 for (qd = &query_details[0]; qd->name != NULL; qd++)
1650 if (len < qd->len || strncmp(buffer, qd->name, qd->len) != 0) continue;
1651 if (!qd->with_arg && len != qd->len) continue;
1653 (qd->handler)(gdbctx, len - qd->len, buffer + qd->len);
1656 return packet_reply_error(gdbctx, EINVAL);
1659 static enum packet_return packet_query(struct gdb_context* gdbctx)
1661 switch (gdbctx->in_packet[0])
1664 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1666 struct dbg_thread* thd;
1668 packet_reply_open(gdbctx);
1669 packet_reply_add(gdbctx, "m", 1);
1670 for (thd = gdbctx->process->threads; thd; thd = thd->next)
1672 packet_reply_val(gdbctx, thd->tid, 4);
1673 if (thd->next != NULL)
1674 packet_reply_add(gdbctx, ",", 1);
1676 packet_reply_close(gdbctx);
1679 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1683 packet_reply_open(gdbctx);
1684 packet_reply_catc(gdbctx, 'O');
1685 get_process_info(gdbctx, result, sizeof(result));
1686 packet_reply_hex_to_str(gdbctx, result);
1687 packet_reply_close(gdbctx);
1692 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1694 packet_reply(gdbctx, "l", 1);
1697 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1699 packet_reply(gdbctx, "l", 1);
1704 if (gdbctx->in_packet_len == 1)
1706 struct dbg_thread* thd;
1707 /* FIXME: doc says 16 bit val ??? */
1708 /* grab first created thread, aka last in list */
1709 assert(gdbctx->process && gdbctx->process->threads);
1710 for (thd = gdbctx->process->threads; thd->next; thd = thd->next);
1711 packet_reply_open(gdbctx);
1712 packet_reply_add(gdbctx, "QC", 2);
1713 packet_reply_val(gdbctx, thd->tid, 4);
1714 packet_reply_close(gdbctx);
1719 if (strncmp(gdbctx->in_packet, "Offsets", gdbctx->in_packet_len) == 0)
1723 if (gdbctx->wine_segs[0] == 0 && gdbctx->wine_segs[1] == 0 &&
1724 gdbctx->wine_segs[2] == 0)
1725 return packet_error;
1726 snprintf(buf, sizeof(buf),
1727 "Text=%08lx;Data=%08lx;Bss=%08lx",
1728 gdbctx->wine_segs[0], gdbctx->wine_segs[1],
1729 gdbctx->wine_segs[2]);
1730 return packet_reply(gdbctx, buf, -1);
1734 if (gdbctx->in_packet_len > 5 && strncmp(gdbctx->in_packet, "Rcmd,", 5) == 0)
1736 return packet_query_remote_command(gdbctx, gdbctx->in_packet + 5,
1737 gdbctx->in_packet_len - 5);
1741 if (strncmp(gdbctx->in_packet, "Symbol::", gdbctx->in_packet_len) == 0)
1745 if (gdbctx->in_packet_len > 15 &&
1746 strncmp(gdbctx->in_packet, "ThreadExtraInfo", 15) == 0 &&
1747 gdbctx->in_packet[15] == ',')
1753 tid = strtol(gdbctx->in_packet + 16, &end, 16);
1754 if (end == NULL) break;
1755 get_thread_info(gdbctx, tid, result, sizeof(result));
1756 packet_reply_open(gdbctx);
1757 packet_reply_hex_to_str(gdbctx, result);
1758 packet_reply_close(gdbctx);
1763 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1764 fprintf(stderr, "Unknown or malformed query %*.*s\n",
1765 gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
1766 return packet_error;
1769 static enum packet_return packet_step(struct gdb_context* gdbctx)
1771 /* FIXME: add support for address in packet */
1772 assert(gdbctx->in_packet_len == 0);
1773 if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
1774 if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
1775 fprintf(stderr, "NIY: step on %lu, while last thread is %lu\n",
1776 gdbctx->exec_thread->tid, dbg_curr_thread->tid);
1777 be_cpu->single_step(&gdbctx->context, TRUE);
1778 resume_debuggee(gdbctx, DBG_CONTINUE);
1779 wait_for_debuggee(gdbctx);
1780 be_cpu->single_step(&gdbctx->context, FALSE);
1781 return packet_reply_status(gdbctx);
1785 static enum packet_return packet_step_signal(struct gdb_context* gdbctx)
1789 /* FIXME: add support for address in packet */
1790 assert(gdbctx->in_packet_len == 2);
1791 if (dbg_curr_thread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1792 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1793 fprintf(stderr, "NIY: step/sig on %u, while last thread is %u\n",
1794 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1795 hex_from(&sig, gdbctx->in_packet, 1);
1796 /* cannot change signals on the fly */
1797 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1798 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1799 if (sig != gdbctx->last_sig)
1800 return packet_error;
1801 resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
1802 wait_for_debuggee(gdbctx);
1803 return packet_reply_status(gdbctx);
1807 static enum packet_return packet_thread_alive(struct gdb_context* gdbctx)
1812 tid = strtol(gdbctx->in_packet, &end, 16);
1813 if (tid == -1 || tid == 0)
1814 return packet_reply_error(gdbctx, EINVAL);
1815 if (dbg_get_thread(gdbctx->process, tid) != NULL)
1817 return packet_reply_error(gdbctx, ESRCH);
1820 static enum packet_return packet_remove_breakpoint(struct gdb_context* gdbctx)
1824 struct gdb_ctx_Xpoint* xpt;
1825 enum be_xpoint_type t;
1827 /* FIXME: check packet_len */
1828 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1829 gdbctx->in_packet[1] != ',' ||
1830 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1831 return packet_error;
1832 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1833 fprintf(stderr, "Remove bp %p[%u] typ=%c\n",
1834 addr, len, gdbctx->in_packet[0]);
1835 switch (gdbctx->in_packet[0])
1837 case '0': t = be_xpoint_break; len = 0; break;
1838 case '1': t = be_xpoint_watch_exec; break;
1839 case '2': t = be_xpoint_watch_read; break;
1840 case '3': t = be_xpoint_watch_write; break;
1841 default: return packet_error;
1843 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1845 if (xpt->addr == addr && xpt->type == t)
1847 if (be_cpu->remove_Xpoint(gdbctx->process->handle,
1848 gdbctx->process->process_io, &gdbctx->context,
1849 t, xpt->addr, xpt->val, len))
1857 return packet_error;
1860 static enum packet_return packet_set_breakpoint(struct gdb_context* gdbctx)
1864 struct gdb_ctx_Xpoint* xpt;
1865 enum be_xpoint_type t;
1867 /* FIXME: check packet_len */
1868 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1869 gdbctx->in_packet[1] != ',' ||
1870 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1871 return packet_error;
1872 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1873 fprintf(stderr, "Set bp %p[%u] typ=%c\n",
1874 addr, len, gdbctx->in_packet[0]);
1875 switch (gdbctx->in_packet[0])
1877 case '0': t = be_xpoint_break; len = 0; break;
1878 case '1': t = be_xpoint_watch_exec; break;
1879 case '2': t = be_xpoint_watch_read; break;
1880 case '3': t = be_xpoint_watch_write; break;
1881 default: return packet_error;
1883 /* because of packet command handling, this should be made idempotent */
1884 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1886 if (xpt->addr == addr && xpt->type == t)
1887 return packet_ok; /* nothing to do */
1889 /* really set the Xpoint */
1890 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1892 if (xpt->type == -1)
1894 if (be_cpu->insert_Xpoint(gdbctx->process->handle,
1895 gdbctx->process->process_io, &gdbctx->context,
1896 t, addr, &xpt->val, len))
1902 fprintf(stderr, "cannot set xpoint\n");
1906 /* no more entries... eech */
1907 fprintf(stderr, "Running out of spots for {break|watch}points\n");
1908 return packet_error;
1911 /* =============================================== *
1912 * P A C K E T I N F R A S T R U C T U R E *
1913 * =============================================== *
1919 enum packet_return (*handler)(struct gdb_context* gdbctx);
1922 static struct packet_entry packet_entries[] =
1924 /*{'!', packet_extended}, */
1925 {'?', packet_last_signal},
1926 {'c', packet_continue},
1927 {'C', packet_continue_signal},
1928 {'D', packet_detach},
1929 {'g', packet_read_registers},
1930 {'G', packet_write_registers},
1932 {'H', packet_thread},
1933 {'m', packet_read_memory},
1934 {'M', packet_write_memory},
1935 /* {'p', packet_read_register}, doesn't seem needed */
1936 {'P', packet_write_register},
1937 {'q', packet_query},
1938 /* {'Q', packet_set}, */
1939 /* {'R', packet,restart}, only in extended mode ! */
1941 /*{'S', packet_step_signal}, hard(er) to implement */
1942 {'T', packet_thread_alive},
1943 {'v', packet_verbose},
1944 {'z', packet_remove_breakpoint},
1945 {'Z', packet_set_breakpoint},
1948 static BOOL extract_packets(struct gdb_context* gdbctx)
1952 unsigned char in_cksum, loc_cksum;
1954 enum packet_return ret = packet_error;
1957 while ((ret & packet_last_f) == 0)
1959 if (gdbctx->in_len && (gdbctx->trace & GDBPXY_TRC_LOWLEVEL))
1960 fprintf(stderr, "In-buf: %*.*s\n",
1961 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
1962 ptr = memchr(gdbctx->in_buf, '$', gdbctx->in_len);
1963 if (ptr == NULL) return FALSE;
1964 if (ptr != gdbctx->in_buf)
1966 int glen = ptr - gdbctx->in_buf; /* garbage len */
1967 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1968 fprintf(stderr, "Removing garbage: %*.*s\n",
1969 glen, glen, gdbctx->in_buf);
1970 gdbctx->in_len -= glen;
1971 memmove(gdbctx->in_buf, ptr, gdbctx->in_len);
1973 end = memchr(gdbctx->in_buf + 1, '#', gdbctx->in_len);
1974 if (end == NULL) return FALSE;
1975 /* no checksum yet */
1976 if (end + 3 > gdbctx->in_buf + gdbctx->in_len) return FALSE;
1977 plen = end - gdbctx->in_buf - 1;
1978 hex_from(&in_cksum, end + 1, 1);
1979 loc_cksum = checksum(gdbctx->in_buf + 1, plen);
1980 if (loc_cksum == in_cksum)
1982 if (num_packet == 0) {
1987 write(gdbctx->sock, "+", 1);
1990 /* FIXME: should use bsearch if packet_entries was sorted */
1991 for (i = 0; i < sizeof(packet_entries)/sizeof(packet_entries[0]); i++)
1993 if (packet_entries[i].key == gdbctx->in_buf[1]) break;
1995 if (i == sizeof(packet_entries)/sizeof(packet_entries[0]))
1997 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1998 fprintf(stderr, "Unknown packet request %*.*s\n",
1999 plen, plen, &gdbctx->in_buf[1]);
2003 gdbctx->in_packet = gdbctx->in_buf + 2;
2004 gdbctx->in_packet_len = plen - 1;
2005 if (gdbctx->trace & GDBPXY_TRC_PACKET)
2006 fprintf(stderr, "Packet: %c%*.*s\n",
2008 gdbctx->in_packet_len, gdbctx->in_packet_len,
2010 ret = (packet_entries[i].handler)(gdbctx);
2012 switch (ret & ~packet_last_f)
2014 case packet_error: packet_reply(gdbctx, "", 0); break;
2015 case packet_ok: packet_reply(gdbctx, "OK", 2); break;
2016 case packet_done: break;
2018 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2019 fprintf(stderr, "Reply-full: %*.*s\n",
2020 gdbctx->out_len, gdbctx->out_len, gdbctx->out_buf);
2021 i = write(gdbctx->sock, gdbctx->out_buf, gdbctx->out_len);
2022 assert(i == gdbctx->out_len);
2023 /* if this fails, we'll have to use POLLOUT...
2025 gdbctx->out_len = 0;
2030 /* FIXME: if we have in our input buffer more than one packet,
2031 * it's very likely that we took too long to answer to a given packet
2032 * and gdb is sending us again the same packet
2033 * We simply drop the second packet. This will lower the risk of error,
2034 * but there's still some race conditions here
2035 * A better fix (yet not perfect) would be to have two threads:
2036 * - one managing the packets for gdb
2037 * - the second one managing the commands...
2038 * This would allow us also the reply with the '+' character (Ack of
2039 * the command) way sooner than what we do now
2041 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2042 fprintf(stderr, "Dropping packet, I was too slow to respond\n");
2047 write(gdbctx->sock, "+", 1);
2048 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2049 fprintf(stderr, "Dropping packet, invalid checksum %d <> %d\n", in_cksum, loc_cksum);
2051 gdbctx->in_len -= plen + 4;
2052 memmove(gdbctx->in_buf, end + 3, gdbctx->in_len);
2057 static int fetch_data(struct gdb_context* gdbctx)
2059 int len, in_len = gdbctx->in_len;
2061 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2065 if (gdbctx->in_len + STEP > gdbctx->in_buf_alloc)
2066 gdbctx->in_buf = realloc(gdbctx->in_buf, gdbctx->in_buf_alloc += STEP);
2068 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2069 fprintf(stderr, "%d %d %*.*s\n",
2070 gdbctx->in_len, gdbctx->in_buf_alloc,
2071 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
2072 len = read(gdbctx->sock, gdbctx->in_buf + gdbctx->in_len, gdbctx->in_buf_alloc - gdbctx->in_len);
2073 if (len <= 0) break;
2074 gdbctx->in_len += len;
2075 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2076 if (len < gdbctx->in_buf_alloc - gdbctx->in_len) break;
2078 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2079 fprintf(stderr, "=> %d\n", gdbctx->in_len - in_len);
2080 return gdbctx->in_len - in_len;
2083 #define FLAG_NO_START 1
2084 #define FLAG_WITH_XTERM 2
2086 static BOOL gdb_exec(const char* wine_path, unsigned port, unsigned flags)
2090 const char* gdb_path;
2093 if (!(gdb_path = getenv("WINE_GDB"))) gdb_path = "gdb";
2094 strcpy(buf,"/tmp/winegdb.XXXXXX");
2095 fd = mkstemps(buf, 0);
2096 if (fd == -1) return FALSE;
2097 if ((f = fdopen(fd, "w+")) == NULL) return FALSE;
2098 fprintf(f, "file %s\n", wine_path);
2099 fprintf(f, "target remote localhost:%d\n", ntohs(port));
2100 fprintf(f, "monitor trace=%d\n", GDBPXY_TRC_COMMAND_FIXME);
2101 fprintf(f, "set prompt Wine-gdb>\\ \n");
2102 /* gdb 5.1 seems to require it, won't hurt anyway */
2103 fprintf(f, "sharedlibrary\n");
2104 /* This is needed (but not a decent & final fix)
2105 * Without this, gdb would skip our inter-DLL relay code (because
2106 * we don't have any line number information for the relay code)
2107 * With this, we will stop on first instruction of the stub, and
2108 * reusing step, will get us through the relay stub at the actual
2109 * function we're looking at.
2111 fprintf(f, "set step-mode on\n");
2112 /* tell gdb to delete this file when done handling it... */
2113 fprintf(f, "shell rm -f \"%s\"\n", buf);
2115 if (flags & FLAG_WITH_XTERM)
2116 execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
2118 execlp(gdb_path, gdb_path, "-x", buf, NULL);
2119 assert(0); /* never reached */
2123 static BOOL gdb_startup(struct gdb_context* gdbctx, DEBUG_EVENT* de, unsigned flags)
2126 struct sockaddr_in s_addrs;
2127 unsigned int s_len = sizeof(s_addrs);
2128 struct pollfd pollfd;
2129 IMAGEHLP_MODULE imh_mod;
2131 /* step 1: create socket for gdb connection request */
2132 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
2134 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2135 fprintf(stderr, "Can't create socket");
2139 if (listen(sock, 1) == -1 ||
2140 getsockname(sock, (struct sockaddr*)&s_addrs, &s_len) == -1)
2143 /* step 2: do the process internal creation */
2144 handle_debug_event(gdbctx, de);
2146 /* step3: get the wine loader name */
2147 if (!dbg_get_debuggee_info(gdbctx->process->handle, &imh_mod)) return FALSE;
2149 /* step 4: fire up gdb (if requested) */
2150 if (flags & FLAG_NO_START)
2151 fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
2155 case -1: /* error in parent... */
2156 fprintf(stderr, "Cannot create gdb\n");
2159 default: /* in parent... success */
2161 case 0: /* in child... and alive */
2162 gdb_exec(imh_mod.LoadedImageName, s_addrs.sin_port, flags);
2163 /* if we're here, exec failed, so report failure */
2167 /* step 5: wait for gdb to connect actually */
2169 pollfd.events = POLLIN;
2172 switch (poll(&pollfd, 1, -1))
2175 if (pollfd.revents & POLLIN)
2178 gdbctx->sock = accept(sock, (struct sockaddr*)&s_addrs, &s_len);
2179 if (gdbctx->sock == -1)
2181 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2182 fprintf(stderr, "Connected on %d\n", gdbctx->sock);
2183 /* don't keep our small packets too long: send them ASAP back to GDB
2184 * without this, GDB really crawls
2186 setsockopt(gdbctx->sock, IPPROTO_TCP, TCP_NODELAY, (char*)&dummy, sizeof(dummy));
2190 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2191 fprintf(stderr, "Poll for cnx failed (timeout)\n");
2194 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2195 fprintf(stderr, "Poll for cnx failed (error)\n");
2205 static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags)
2211 gdbctx->in_buf = NULL;
2212 gdbctx->in_buf_alloc = 0;
2214 gdbctx->out_buf = NULL;
2215 gdbctx->out_buf_alloc = 0;
2216 gdbctx->out_len = 0;
2217 gdbctx->out_curr_packet = -1;
2219 gdbctx->exec_thread = gdbctx->other_thread = NULL;
2220 gdbctx->last_sig = 0;
2221 gdbctx->in_trap = FALSE;
2222 gdbctx->trace = /*GDBPXY_TRC_PACKET | GDBPXY_TRC_COMMAND |*/ GDBPXY_TRC_COMMAND_ERROR | GDBPXY_TRC_COMMAND_FIXME | GDBPXY_TRC_WIN32_EVENT;
2223 gdbctx->process = NULL;
2224 for (i = 0; i < NUM_XPOINT; i++)
2225 gdbctx->Xpoints[i].type = -1;
2227 /* wait for first trap */
2228 while (WaitForDebugEvent(&de, INFINITE))
2230 if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
2232 /* this should be the first event we get,
2233 * and the only one of this type */
2234 assert(gdbctx->process == NULL && de.dwProcessId == dbg_curr_pid);
2235 /* gdbctx->dwProcessId = pid; */
2236 if (!gdb_startup(gdbctx, &de, flags)) return FALSE;
2237 assert(!gdbctx->in_trap);
2241 handle_debug_event(gdbctx, &de);
2242 if (gdbctx->in_trap) break;
2244 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
2249 static int gdb_remote(unsigned flags)
2251 struct pollfd pollfd;
2252 struct gdb_context gdbctx;
2255 for (doLoop = gdb_init_context(&gdbctx, flags); doLoop;)
2257 pollfd.fd = gdbctx.sock;
2258 pollfd.events = POLLIN;
2261 switch (poll(&pollfd, 1, -1))
2265 if (pollfd.revents & (POLLHUP | POLLERR))
2267 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2268 fprintf(stderr, "Gdb hung up\n");
2269 /* kill also debuggee process - questionnable - */
2270 detach_debuggee(&gdbctx, TRUE);
2274 if ((pollfd.revents & POLLIN) && fetch_data(&gdbctx) > 0)
2276 if (extract_packets(&gdbctx)) doLoop = FALSE;
2280 /* timeout, should never happen (infinite timeout) */
2283 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2284 fprintf(stderr, "Poll failed\n");
2294 int gdb_main(int argc, char* argv[])
2297 unsigned gdb_flags = 0;
2300 while (argc > 0 && argv[0][0] == '-')
2302 if (strcmp(argv[0], "--no-start") == 0)
2304 gdb_flags |= FLAG_NO_START;
2308 if (strcmp(argv[0], "--with-xterm") == 0)
2310 gdb_flags |= FLAG_WITH_XTERM;
2316 if (dbg_active_attach(argc, argv) == start_ok ||
2317 dbg_active_launch(argc, argv) == start_ok)
2318 return gdb_remote(gdb_flags);
2320 fprintf(stderr, "GdbProxy mode not supported on this platform\n");
2325 static struct be_process_io be_process_gdbproxy_io =
2327 NULL, /* we shouldn't use close_process() in gdbproxy */