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%08x\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, "%04x:%04x: create process '%s'/%p @%p (%u<%u>)\n",
496 de->dwProcessId, de->dwThreadId,
497 buffer, de->u.CreateProcessInfo.lpImageName,
498 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, "%04x:%04x: create thread I @%p\n",
508 de->dwProcessId, de->dwThreadId,
509 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, "%04x:%04x: loads DLL %s @%p (%u<%u>)\n",
525 de->dwProcessId, de->dwThreadId,
526 buffer, 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, "%08x:%08x: unload DLL @%p\n",
536 de->dwProcessId, de->dwThreadId, 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, "%08x:%08x: exception code=0x%08x\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, "%08x:%08x: create thread D @%p\n",
557 de->dwProcessId, de->dwThreadId, 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, "%08x:%08x: exit thread (%u)\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, "%08x:%08x: exit process (%u)\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, "%08x:%08x: output debug string (%s)\n",
595 de->dwProcessId, de->dwThreadId, buffer);
599 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
600 fprintf(stderr, "%08x:%08x: rip error=%u type=%u\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, "%08x:%08x: unknown event (%u)\n",
608 de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
612 static void resume_debuggee(struct gdb_context* gdbctx, DWORD 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 %04x\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 %04x (%x)\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, DWORD 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 %04x\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 %04x (%x)\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)
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 (%u)", 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;
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 (%u)", status - 1);
784 ResumeThread(thd->handle);
787 snprintf(buffer, len, "Terminated (exit code = %u)", 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 %04x, while last thread is %04x\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 %04x, while last thread is %04x\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 %04x, while last thread is %04x\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 %04x\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_read_register(struct gdb_context* gdbctx)
1392 CONTEXT* pctx = &gdbctx->context;
1394 assert(gdbctx->in_trap);
1395 reg = hex_to_int(gdbctx->in_packet, gdbctx->in_packet_len);
1396 if (reg >= cpu_num_regs)
1398 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1399 fprintf(stderr, "Register out of bounds %x\n", reg);
1400 return packet_error;
1402 if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
1404 if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
1405 return packet_error;
1407 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1408 fprintf(stderr, "Read register %x => %lx\n", reg, *cpu_register(pctx, reg));
1409 packet_reply_open(gdbctx);
1410 packet_reply_hex_to(gdbctx, cpu_register(pctx, reg), 4);
1411 packet_reply_close(gdbctx);
1415 static enum packet_return packet_write_register(struct gdb_context* gdbctx)
1421 CONTEXT* pctx = &gdbctx->context;
1423 assert(gdbctx->in_trap);
1425 ptr = memchr(gdbctx->in_packet, '=', gdbctx->in_packet_len);
1427 reg = strtoul(gdbctx->in_packet, &end, 16);
1428 if (end == NULL || reg > cpu_num_regs)
1430 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1431 fprintf(stderr, "Invalid register index %s\n", gdbctx->in_packet);
1432 /* FIXME: if just the reg is above cpu_num_regs, don't tell gdb
1433 * it wouldn't matter too much, and it fakes our support for all regs
1435 return (end == NULL) ? packet_error : packet_ok;
1437 if (ptr + 8 - gdbctx->in_packet != gdbctx->in_packet_len)
1439 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1440 fprintf(stderr, "Wrong sizes %u <> %u\n",
1441 ptr + 8 - gdbctx->in_packet, gdbctx->in_packet_len);
1442 return packet_error;
1444 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1445 fprintf(stderr, "Writing reg %u <= %*.*s\n",
1446 reg, gdbctx->in_packet_len - (ptr - gdbctx->in_packet),
1447 gdbctx->in_packet_len - (ptr - gdbctx->in_packet), ptr);
1449 if (dbg_curr_thread != gdbctx->other_thread && gdbctx->other_thread)
1451 if (!fetch_context(gdbctx, gdbctx->other_thread->handle, pctx = &ctx))
1452 return packet_error;
1455 hex_from(cpu_register(pctx, reg), ptr, 4);
1456 if (pctx != &gdbctx->context && !SetThreadContext(gdbctx->other_thread->handle, pctx))
1458 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
1459 fprintf(stderr, "Cannot set context for thread %04x\n", gdbctx->other_thread->tid);
1460 return packet_error;
1466 static void packet_query_monitor_wnd_helper(struct gdb_context* gdbctx, HWND hWnd, int indent)
1474 if (!GetClassName(hWnd, clsName, sizeof(clsName)))
1475 strcpy(clsName, "-- Unknown --");
1476 if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
1477 strcpy(wndName, "-- Empty --");
1479 packet_reply_open(gdbctx);
1480 packet_reply_catc(gdbctx, 'O');
1481 snprintf(buffer, sizeof(buffer),
1482 "%*s%04lx%*s%-17.17s %08x %08x %.14s\n",
1483 indent, "", (ULONG_PTR)hWnd, 13 - indent, "",
1484 clsName, GetWindowLong(hWnd, GWL_STYLE),
1485 GetWindowLongPtr(hWnd, GWLP_WNDPROC), wndName);
1486 packet_reply_hex_to_str(gdbctx, buffer);
1487 packet_reply_close(gdbctx);
1489 if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
1490 packet_query_monitor_wnd_helper(gdbctx, child, indent + 1);
1491 } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
1494 static void packet_query_monitor_wnd(struct gdb_context* gdbctx, int len, const char* str)
1498 /* we do the output in several 'O' packets, with the last one being just OK for
1499 * marking the end of the output */
1500 packet_reply_open(gdbctx);
1501 packet_reply_catc(gdbctx, 'O');
1502 snprintf(buffer, sizeof(buffer),
1503 "%-16.16s %-17.17s %-8.8s %s\n",
1504 "hwnd", "Class Name", " Style", " WndProc Text");
1505 packet_reply_hex_to_str(gdbctx, buffer);
1506 packet_reply_close(gdbctx);
1508 /* FIXME: could also add a pmt to this command in str... */
1509 packet_query_monitor_wnd_helper(gdbctx, GetDesktopWindow(), 0);
1510 packet_reply(gdbctx, "OK", 2);
1513 static void packet_query_monitor_process(struct gdb_context* gdbctx, int len, const char* str)
1515 HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1518 PROCESSENTRY32 entry;
1521 if (snap == INVALID_HANDLE_VALUE)
1524 entry.dwSize = sizeof(entry);
1525 ok = Process32First(snap, &entry);
1527 /* we do the output in several 'O' packets, with the last one being just OK for
1528 * marking the end of the output */
1530 packet_reply_open(gdbctx);
1531 packet_reply_catc(gdbctx, 'O');
1532 snprintf(buffer, sizeof(buffer),
1533 " %-8.8s %-8.8s %-8.8s %s\n",
1534 "pid", "threads", "parent", "executable");
1535 packet_reply_hex_to_str(gdbctx, buffer);
1536 packet_reply_close(gdbctx);
1541 if (entry.th32ProcessID == gdbctx->process->pid) deco = '>';
1542 packet_reply_open(gdbctx);
1543 packet_reply_catc(gdbctx, 'O');
1544 snprintf(buffer, sizeof(buffer),
1545 "%c%08x %-8d %08x '%s'\n",
1546 deco, entry.th32ProcessID, entry.cntThreads,
1547 entry.th32ParentProcessID, entry.szExeFile);
1548 packet_reply_hex_to_str(gdbctx, buffer);
1549 packet_reply_close(gdbctx);
1550 ok = Process32Next(snap, &entry);
1553 packet_reply(gdbctx, "OK", 2);
1556 static void packet_query_monitor_mem(struct gdb_context* gdbctx, int len, const char* str)
1558 MEMORY_BASIC_INFORMATION mbi;
1565 /* we do the output in several 'O' packets, with the last one being just OK for
1566 * marking the end of the output */
1567 packet_reply_open(gdbctx);
1568 packet_reply_catc(gdbctx, 'O');
1569 packet_reply_hex_to_str(gdbctx, "Address Size State Type RWX\n");
1570 packet_reply_close(gdbctx);
1572 while (VirtualQueryEx(gdbctx->process->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
1576 case MEM_COMMIT: state = "commit "; break;
1577 case MEM_FREE: state = "free "; break;
1578 case MEM_RESERVE: state = "reserve"; break;
1579 default: state = "??? "; break;
1581 if (mbi.State != MEM_FREE)
1585 case MEM_IMAGE: type = "image "; break;
1586 case MEM_MAPPED: type = "mapped "; break;
1587 case MEM_PRIVATE: type = "private"; break;
1588 case 0: type = " "; break;
1589 default: type = "??? "; break;
1591 memset(prot, ' ' , sizeof(prot)-1);
1592 prot[sizeof(prot)-1] = '\0';
1593 if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1595 if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
1597 if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
1599 if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1607 packet_reply_open(gdbctx);
1608 snprintf(buffer, sizeof(buffer), "%08lx %08lx %s %s %s\n",
1609 (DWORD_PTR)addr, mbi.RegionSize, state, type, prot);
1610 packet_reply_catc(gdbctx, 'O');
1611 packet_reply_hex_to_str(gdbctx, buffer);
1612 packet_reply_close(gdbctx);
1614 if (addr + mbi.RegionSize < addr) /* wrap around ? */
1616 addr += mbi.RegionSize;
1618 packet_reply(gdbctx, "OK", 2);
1621 static void packet_query_monitor_trace(struct gdb_context* gdbctx,
1622 int len, const char* str)
1628 snprintf(buffer, sizeof(buffer), "trace=%x\n", gdbctx->trace);
1630 else if (len >= 2 && str[0] == '=')
1632 unsigned val = atoi(&str[1]);
1633 snprintf(buffer, sizeof(buffer), "trace: %x => %x\n", gdbctx->trace, val);
1634 gdbctx->trace = val;
1638 /* FIXME: ugly but can use error packet here */
1639 packet_reply_cat(gdbctx, "E00");
1642 packet_reply_open(gdbctx);
1643 packet_reply_hex_to_str(gdbctx, buffer);
1644 packet_reply_close(gdbctx);
1652 void (*handler)(struct gdb_context*, int, const char*);
1655 {0, "wnd", 3, packet_query_monitor_wnd},
1656 {0, "window", 6, packet_query_monitor_wnd},
1657 {0, "proc", 4, packet_query_monitor_process},
1658 {0, "process", 7, packet_query_monitor_process},
1659 {0, "mem", 3, packet_query_monitor_mem},
1660 {1, "trace", 5, packet_query_monitor_trace},
1664 static enum packet_return packet_query_remote_command(struct gdb_context* gdbctx,
1665 const char* hxcmd, size_t len)
1668 struct query_detail* qd;
1670 assert((len & 1) == 0 && len < 2 * sizeof(buffer));
1672 hex_from(buffer, hxcmd, len);
1674 for (qd = &query_details[0]; qd->name != NULL; qd++)
1676 if (len < qd->len || strncmp(buffer, qd->name, qd->len) != 0) continue;
1677 if (!qd->with_arg && len != qd->len) continue;
1679 (qd->handler)(gdbctx, len - qd->len, buffer + qd->len);
1682 return packet_reply_error(gdbctx, EINVAL);
1685 static enum packet_return packet_query(struct gdb_context* gdbctx)
1687 switch (gdbctx->in_packet[0])
1690 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1692 struct dbg_thread* thd;
1694 packet_reply_open(gdbctx);
1695 packet_reply_add(gdbctx, "m", 1);
1696 for (thd = gdbctx->process->threads; thd; thd = thd->next)
1698 packet_reply_val(gdbctx, thd->tid, 4);
1699 if (thd->next != NULL)
1700 packet_reply_add(gdbctx, ",", 1);
1702 packet_reply_close(gdbctx);
1705 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1709 packet_reply_open(gdbctx);
1710 packet_reply_catc(gdbctx, 'O');
1711 get_process_info(gdbctx, result, sizeof(result));
1712 packet_reply_hex_to_str(gdbctx, result);
1713 packet_reply_close(gdbctx);
1718 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1720 packet_reply(gdbctx, "l", 1);
1723 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1725 packet_reply(gdbctx, "l", 1);
1730 if (gdbctx->in_packet_len == 1)
1732 struct dbg_thread* thd;
1733 /* FIXME: doc says 16 bit val ??? */
1734 /* grab first created thread, aka last in list */
1735 assert(gdbctx->process && gdbctx->process->threads);
1736 for (thd = gdbctx->process->threads; thd->next; thd = thd->next);
1737 packet_reply_open(gdbctx);
1738 packet_reply_add(gdbctx, "QC", 2);
1739 packet_reply_val(gdbctx, thd->tid, 4);
1740 packet_reply_close(gdbctx);
1745 if (strncmp(gdbctx->in_packet, "Offsets", gdbctx->in_packet_len) == 0)
1749 if (gdbctx->wine_segs[0] == 0 && gdbctx->wine_segs[1] == 0 &&
1750 gdbctx->wine_segs[2] == 0)
1751 return packet_error;
1752 snprintf(buf, sizeof(buf),
1753 "Text=%08lx;Data=%08lx;Bss=%08lx",
1754 gdbctx->wine_segs[0], gdbctx->wine_segs[1],
1755 gdbctx->wine_segs[2]);
1756 return packet_reply(gdbctx, buf, -1);
1760 if (gdbctx->in_packet_len > 5 && strncmp(gdbctx->in_packet, "Rcmd,", 5) == 0)
1762 return packet_query_remote_command(gdbctx, gdbctx->in_packet + 5,
1763 gdbctx->in_packet_len - 5);
1767 if (strncmp(gdbctx->in_packet, "Symbol::", gdbctx->in_packet_len) == 0)
1771 if (gdbctx->in_packet_len > 15 &&
1772 strncmp(gdbctx->in_packet, "ThreadExtraInfo", 15) == 0 &&
1773 gdbctx->in_packet[15] == ',')
1779 tid = strtol(gdbctx->in_packet + 16, &end, 16);
1780 if (end == NULL) break;
1781 get_thread_info(gdbctx, tid, result, sizeof(result));
1782 packet_reply_open(gdbctx);
1783 packet_reply_hex_to_str(gdbctx, result);
1784 packet_reply_close(gdbctx);
1789 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1790 fprintf(stderr, "Unknown or malformed query %*.*s\n",
1791 gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
1792 return packet_error;
1795 static enum packet_return packet_step(struct gdb_context* gdbctx)
1797 /* FIXME: add support for address in packet */
1798 assert(gdbctx->in_packet_len == 0);
1799 if (dbg_curr_thread != gdbctx->exec_thread && gdbctx->exec_thread)
1800 if (gdbctx->trace & GDBPXY_TRC_COMMAND_FIXME)
1801 fprintf(stderr, "NIY: step on %04x, while last thread is %04x\n",
1802 gdbctx->exec_thread->tid, dbg_curr_thread->tid);
1803 be_cpu->single_step(&gdbctx->context, TRUE);
1804 resume_debuggee(gdbctx, DBG_CONTINUE);
1805 wait_for_debuggee(gdbctx);
1806 be_cpu->single_step(&gdbctx->context, FALSE);
1807 return packet_reply_status(gdbctx);
1811 static enum packet_return packet_step_signal(struct gdb_context* gdbctx)
1815 /* FIXME: add support for address in packet */
1816 assert(gdbctx->in_packet_len == 2);
1817 if (dbg_curr_thread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1818 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1819 fprintf(stderr, "NIY: step/sig on %u, while last thread is %u\n",
1820 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1821 hex_from(&sig, gdbctx->in_packet, 1);
1822 /* cannot change signals on the fly */
1823 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1824 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1825 if (sig != gdbctx->last_sig)
1826 return packet_error;
1827 resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
1828 wait_for_debuggee(gdbctx);
1829 return packet_reply_status(gdbctx);
1833 static enum packet_return packet_thread_alive(struct gdb_context* gdbctx)
1838 tid = strtol(gdbctx->in_packet, &end, 16);
1839 if (tid == -1 || tid == 0)
1840 return packet_reply_error(gdbctx, EINVAL);
1841 if (dbg_get_thread(gdbctx->process, tid) != NULL)
1843 return packet_reply_error(gdbctx, ESRCH);
1846 static enum packet_return packet_remove_breakpoint(struct gdb_context* gdbctx)
1850 struct gdb_ctx_Xpoint* xpt;
1851 enum be_xpoint_type t;
1853 /* FIXME: check packet_len */
1854 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1855 gdbctx->in_packet[1] != ',' ||
1856 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1857 return packet_error;
1858 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1859 fprintf(stderr, "Remove bp %p[%u] typ=%c\n",
1860 addr, len, gdbctx->in_packet[0]);
1861 switch (gdbctx->in_packet[0])
1863 case '0': t = be_xpoint_break; len = 0; break;
1864 case '1': t = be_xpoint_watch_exec; break;
1865 case '2': t = be_xpoint_watch_read; break;
1866 case '3': t = be_xpoint_watch_write; break;
1867 default: return packet_error;
1869 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1871 if (xpt->addr == addr && xpt->type == t)
1873 if (be_cpu->remove_Xpoint(gdbctx->process->handle,
1874 gdbctx->process->process_io, &gdbctx->context,
1875 t, xpt->addr, xpt->val, len))
1883 return packet_error;
1886 static enum packet_return packet_set_breakpoint(struct gdb_context* gdbctx)
1890 struct gdb_ctx_Xpoint* xpt;
1891 enum be_xpoint_type t;
1893 /* FIXME: check packet_len */
1894 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1895 gdbctx->in_packet[1] != ',' ||
1896 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1897 return packet_error;
1898 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1899 fprintf(stderr, "Set bp %p[%u] typ=%c\n",
1900 addr, len, gdbctx->in_packet[0]);
1901 switch (gdbctx->in_packet[0])
1903 case '0': t = be_xpoint_break; len = 0; break;
1904 case '1': t = be_xpoint_watch_exec; break;
1905 case '2': t = be_xpoint_watch_read; break;
1906 case '3': t = be_xpoint_watch_write; break;
1907 default: return packet_error;
1909 /* because of packet command handling, this should be made idempotent */
1910 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1912 if (xpt->addr == addr && xpt->type == t)
1913 return packet_ok; /* nothing to do */
1915 /* really set the Xpoint */
1916 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1918 if (xpt->type == -1)
1920 if (be_cpu->insert_Xpoint(gdbctx->process->handle,
1921 gdbctx->process->process_io, &gdbctx->context,
1922 t, addr, &xpt->val, len))
1928 fprintf(stderr, "cannot set xpoint\n");
1932 /* no more entries... eech */
1933 fprintf(stderr, "Running out of spots for {break|watch}points\n");
1934 return packet_error;
1937 /* =============================================== *
1938 * P A C K E T I N F R A S T R U C T U R E *
1939 * =============================================== *
1945 enum packet_return (*handler)(struct gdb_context* gdbctx);
1948 static struct packet_entry packet_entries[] =
1950 /*{'!', packet_extended}, */
1951 {'?', packet_last_signal},
1952 {'c', packet_continue},
1953 {'C', packet_continue_signal},
1954 {'D', packet_detach},
1955 {'g', packet_read_registers},
1956 {'G', packet_write_registers},
1958 {'H', packet_thread},
1959 {'m', packet_read_memory},
1960 {'M', packet_write_memory},
1961 {'p', packet_read_register},
1962 {'P', packet_write_register},
1963 {'q', packet_query},
1964 /* {'Q', packet_set}, */
1965 /* {'R', packet,restart}, only in extended mode ! */
1967 /*{'S', packet_step_signal}, hard(er) to implement */
1968 {'T', packet_thread_alive},
1969 {'v', packet_verbose},
1970 {'z', packet_remove_breakpoint},
1971 {'Z', packet_set_breakpoint},
1974 static BOOL extract_packets(struct gdb_context* gdbctx)
1978 unsigned char in_cksum, loc_cksum;
1980 enum packet_return ret = packet_error;
1983 while ((ret & packet_last_f) == 0)
1985 if (gdbctx->in_len && (gdbctx->trace & GDBPXY_TRC_LOWLEVEL))
1986 fprintf(stderr, "In-buf: %*.*s\n",
1987 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
1988 ptr = memchr(gdbctx->in_buf, '$', gdbctx->in_len);
1989 if (ptr == NULL) return FALSE;
1990 if (ptr != gdbctx->in_buf)
1992 int glen = ptr - gdbctx->in_buf; /* garbage len */
1993 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1994 fprintf(stderr, "Removing garbage: %*.*s\n",
1995 glen, glen, gdbctx->in_buf);
1996 gdbctx->in_len -= glen;
1997 memmove(gdbctx->in_buf, ptr, gdbctx->in_len);
1999 end = memchr(gdbctx->in_buf + 1, '#', gdbctx->in_len);
2000 if (end == NULL) return FALSE;
2001 /* no checksum yet */
2002 if (end + 3 > gdbctx->in_buf + gdbctx->in_len) return FALSE;
2003 plen = end - gdbctx->in_buf - 1;
2004 hex_from(&in_cksum, end + 1, 1);
2005 loc_cksum = checksum(gdbctx->in_buf + 1, plen);
2006 if (loc_cksum == in_cksum)
2008 if (num_packet == 0) {
2013 write(gdbctx->sock, "+", 1);
2016 /* FIXME: should use bsearch if packet_entries was sorted */
2017 for (i = 0; i < sizeof(packet_entries)/sizeof(packet_entries[0]); i++)
2019 if (packet_entries[i].key == gdbctx->in_buf[1]) break;
2021 if (i == sizeof(packet_entries)/sizeof(packet_entries[0]))
2023 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
2024 fprintf(stderr, "Unknown packet request %*.*s\n",
2025 plen, plen, &gdbctx->in_buf[1]);
2029 gdbctx->in_packet = gdbctx->in_buf + 2;
2030 gdbctx->in_packet_len = plen - 1;
2031 if (gdbctx->trace & GDBPXY_TRC_PACKET)
2032 fprintf(stderr, "Packet: %c%*.*s\n",
2034 gdbctx->in_packet_len, gdbctx->in_packet_len,
2036 ret = (packet_entries[i].handler)(gdbctx);
2038 switch (ret & ~packet_last_f)
2040 case packet_error: packet_reply(gdbctx, "", 0); break;
2041 case packet_ok: packet_reply(gdbctx, "OK", 2); break;
2042 case packet_done: break;
2044 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2045 fprintf(stderr, "Reply-full: %*.*s\n",
2046 gdbctx->out_len, gdbctx->out_len, gdbctx->out_buf);
2047 i = write(gdbctx->sock, gdbctx->out_buf, gdbctx->out_len);
2048 assert(i == gdbctx->out_len);
2049 /* if this fails, we'll have to use POLLOUT...
2051 gdbctx->out_len = 0;
2056 /* FIXME: if we have in our input buffer more than one packet,
2057 * it's very likely that we took too long to answer to a given packet
2058 * and gdb is sending us again the same packet
2059 * We simply drop the second packet. This will lower the risk of error,
2060 * but there's still some race conditions here
2061 * A better fix (yet not perfect) would be to have two threads:
2062 * - one managing the packets for gdb
2063 * - the second one managing the commands...
2064 * This would allow us also the reply with the '+' character (Ack of
2065 * the command) way sooner than what we do now
2067 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2068 fprintf(stderr, "Dropping packet, I was too slow to respond\n");
2073 write(gdbctx->sock, "+", 1);
2074 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2075 fprintf(stderr, "Dropping packet, invalid checksum %d <> %d\n", in_cksum, loc_cksum);
2077 gdbctx->in_len -= plen + 4;
2078 memmove(gdbctx->in_buf, end + 3, gdbctx->in_len);
2083 static int fetch_data(struct gdb_context* gdbctx)
2085 int len, in_len = gdbctx->in_len;
2087 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2091 if (gdbctx->in_len + STEP > gdbctx->in_buf_alloc)
2092 gdbctx->in_buf = realloc(gdbctx->in_buf, gdbctx->in_buf_alloc += STEP);
2094 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2095 fprintf(stderr, "%d %d %*.*s\n",
2096 gdbctx->in_len, gdbctx->in_buf_alloc,
2097 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
2098 len = read(gdbctx->sock, gdbctx->in_buf + gdbctx->in_len, gdbctx->in_buf_alloc - gdbctx->in_len);
2099 if (len <= 0) break;
2100 gdbctx->in_len += len;
2101 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
2102 if (len < gdbctx->in_buf_alloc - gdbctx->in_len) break;
2104 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2105 fprintf(stderr, "=> %d\n", gdbctx->in_len - in_len);
2106 return gdbctx->in_len - in_len;
2109 #define FLAG_NO_START 1
2110 #define FLAG_WITH_XTERM 2
2112 static BOOL gdb_exec(const char* wine_path, unsigned port, unsigned flags)
2116 const char* gdb_path;
2119 if (!(gdb_path = getenv("WINE_GDB"))) gdb_path = "gdb";
2120 strcpy(buf,"/tmp/winegdb.XXXXXX");
2121 fd = mkstemps(buf, 0);
2122 if (fd == -1) return FALSE;
2123 if ((f = fdopen(fd, "w+")) == NULL) return FALSE;
2124 fprintf(f, "file %s\n", wine_path);
2125 fprintf(f, "target remote localhost:%d\n", ntohs(port));
2126 fprintf(f, "monitor trace=%d\n", GDBPXY_TRC_COMMAND_FIXME);
2127 fprintf(f, "set prompt Wine-gdb>\\ \n");
2128 /* gdb 5.1 seems to require it, won't hurt anyway */
2129 fprintf(f, "sharedlibrary\n");
2130 /* This is needed (but not a decent & final fix)
2131 * Without this, gdb would skip our inter-DLL relay code (because
2132 * we don't have any line number information for the relay code)
2133 * With this, we will stop on first instruction of the stub, and
2134 * reusing step, will get us through the relay stub at the actual
2135 * function we're looking at.
2137 fprintf(f, "set step-mode on\n");
2138 /* tell gdb to delete this file when done handling it... */
2139 fprintf(f, "shell rm -f \"%s\"\n", buf);
2141 if (flags & FLAG_WITH_XTERM)
2142 execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
2144 execlp(gdb_path, gdb_path, "-x", buf, NULL);
2145 assert(0); /* never reached */
2149 static BOOL gdb_startup(struct gdb_context* gdbctx, DEBUG_EVENT* de, unsigned flags)
2152 struct sockaddr_in s_addrs;
2153 unsigned int s_len = sizeof(s_addrs);
2154 struct pollfd pollfd;
2155 IMAGEHLP_MODULE imh_mod;
2157 /* step 1: create socket for gdb connection request */
2158 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
2160 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2161 fprintf(stderr, "Can't create socket");
2165 if (listen(sock, 1) == -1 ||
2166 getsockname(sock, (struct sockaddr*)&s_addrs, &s_len) == -1)
2169 /* step 2: do the process internal creation */
2170 handle_debug_event(gdbctx, de);
2172 /* step3: get the wine loader name */
2173 if (!dbg_get_debuggee_info(gdbctx->process->handle, &imh_mod)) return FALSE;
2175 /* step 4: fire up gdb (if requested) */
2176 if (flags & FLAG_NO_START)
2177 fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
2181 case -1: /* error in parent... */
2182 fprintf(stderr, "Cannot create gdb\n");
2184 default: /* in parent... success */
2186 case 0: /* in child... and alive */
2187 gdb_exec(imh_mod.LoadedImageName, s_addrs.sin_port, flags);
2188 /* if we're here, exec failed, so report failure */
2192 /* step 5: wait for gdb to connect actually */
2194 pollfd.events = POLLIN;
2197 switch (poll(&pollfd, 1, -1))
2200 if (pollfd.revents & POLLIN)
2203 gdbctx->sock = accept(sock, (struct sockaddr*)&s_addrs, &s_len);
2204 if (gdbctx->sock == -1)
2206 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2207 fprintf(stderr, "Connected on %d\n", gdbctx->sock);
2208 /* don't keep our small packets too long: send them ASAP back to GDB
2209 * without this, GDB really crawls
2211 setsockopt(gdbctx->sock, IPPROTO_TCP, TCP_NODELAY, (char*)&dummy, sizeof(dummy));
2215 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2216 fprintf(stderr, "Poll for cnx failed (timeout)\n");
2219 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2220 fprintf(stderr, "Poll for cnx failed (error)\n");
2230 static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags)
2236 gdbctx->in_buf = NULL;
2237 gdbctx->in_buf_alloc = 0;
2239 gdbctx->out_buf = NULL;
2240 gdbctx->out_buf_alloc = 0;
2241 gdbctx->out_len = 0;
2242 gdbctx->out_curr_packet = -1;
2244 gdbctx->exec_thread = gdbctx->other_thread = NULL;
2245 gdbctx->last_sig = 0;
2246 gdbctx->in_trap = FALSE;
2247 gdbctx->trace = /*GDBPXY_TRC_PACKET | GDBPXY_TRC_COMMAND |*/ GDBPXY_TRC_COMMAND_ERROR | GDBPXY_TRC_COMMAND_FIXME | GDBPXY_TRC_WIN32_EVENT;
2248 gdbctx->process = NULL;
2249 for (i = 0; i < NUM_XPOINT; i++)
2250 gdbctx->Xpoints[i].type = -1;
2252 /* wait for first trap */
2253 while (WaitForDebugEvent(&de, INFINITE))
2255 if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
2257 /* this should be the first event we get,
2258 * and the only one of this type */
2259 assert(gdbctx->process == NULL && de.dwProcessId == dbg_curr_pid);
2260 /* gdbctx->dwProcessId = pid; */
2261 if (!gdb_startup(gdbctx, &de, flags)) return FALSE;
2262 assert(!gdbctx->in_trap);
2266 handle_debug_event(gdbctx, &de);
2267 if (gdbctx->in_trap) break;
2269 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
2274 static int gdb_remote(unsigned flags)
2276 struct pollfd pollfd;
2277 struct gdb_context gdbctx;
2280 for (doLoop = gdb_init_context(&gdbctx, flags); doLoop;)
2282 pollfd.fd = gdbctx.sock;
2283 pollfd.events = POLLIN;
2286 switch (poll(&pollfd, 1, -1))
2290 if (pollfd.revents & (POLLHUP | POLLERR))
2292 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2293 fprintf(stderr, "Gdb hung up\n");
2294 /* kill also debuggee process - questionnable - */
2295 detach_debuggee(&gdbctx, TRUE);
2299 if ((pollfd.revents & POLLIN) && fetch_data(&gdbctx) > 0)
2301 if (extract_packets(&gdbctx)) doLoop = FALSE;
2305 /* timeout, should never happen (infinite timeout) */
2308 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2309 fprintf(stderr, "Poll failed\n");
2319 int gdb_main(int argc, char* argv[])
2322 unsigned gdb_flags = 0;
2325 while (argc > 0 && argv[0][0] == '-')
2327 if (strcmp(argv[0], "--no-start") == 0)
2329 gdb_flags |= FLAG_NO_START;
2333 if (strcmp(argv[0], "--with-xterm") == 0)
2335 gdb_flags |= FLAG_WITH_XTERM;
2341 if (dbg_active_attach(argc, argv) == start_ok ||
2342 dbg_active_launch(argc, argv) == start_ok)
2343 return gdb_remote(gdb_flags);
2345 fprintf(stderr, "GdbProxy mode not supported on this platform\n");
2350 static struct be_process_io be_process_gdbproxy_io =
2352 NULL, /* we shouldn't use close_process() in gdbproxy */