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
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 /* Protocol specification can be found here:
24 * http://sources.redhat.com/gdb/onlinedocs/gdb_32.html
28 #include "wine/port.h"
38 #ifdef HAVE_SYS_SOCKET_H
39 # include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <netinet/tcp.h>
49 /* those two are needed only for the SHOWNORMAL flag */
55 #define GDBPXY_TRC_LOWLEVEL 0x01
56 #define GDBPXY_TRC_PACKET 0x02
57 #define GDBPXY_TRC_COMMAND 0x04
58 #define GDBPXY_TRC_COMMAND_ERROR 0x08
59 #define GDBPXY_TRC_WIN32_EVENT 0x10
60 #define GDBPXY_TRC_WIN32_ERROR 0x20
64 int type; /* -1 means free */
77 /* split into individual packet */
85 /* generic GDB thread information */
86 unsigned exec_thread; /* thread used in step & continue */
87 unsigned other_thread; /* thread to be used in any other operation */
89 /* current Win32 trap env */
93 /* Win32 information */
96 struct gdb_ctx_Xpoint Xpoints[NUM_XPOINT];
97 /* Unix environment */
98 unsigned long wine_segs[3]; /* load addresses of the ELF wine exec segments (text, bss and data) */
101 extern int read_elf_info(const char* filename, unsigned long tab[]);
103 /* =============================================== *
104 * B A S I C M A N I P U L A T I O N S *
105 * =============================================== *
108 static inline int hex_from0(char ch)
110 if (ch >= '0' && ch <= '9') return ch - '0';
111 if (ch >= 'A' && ch <= 'F') return ch - 'A' + 10;
112 if (ch >= 'a' && ch <= 'f') return ch - 'a' + 10;
118 static inline unsigned char hex_to0(int x)
120 assert(x >= 0 && x < 16);
121 return "0123456789abcdef"[x];
124 static void hex_from(void* dst, const char* src, size_t len)
126 unsigned char *p = dst;
129 *p++ = (hex_from0(src[0]) << 4) | hex_from0(src[1]);
134 static void hex_to(char* dst, const void* src, size_t len)
136 const unsigned char *p = src;
139 *dst++ = hex_to0(*p >> 4);
140 *dst++ = hex_to0(*p & 0x0F);
145 static unsigned char checksum(const char* ptr, int len)
150 cksum += (unsigned char)*ptr++;
154 /* =============================================== *
155 * C P U H A N D L E R S *
156 * =============================================== *
159 #define OFFSET_OF(__c,__f) ((int)(((char*)&(((__c*)0)->__f))-((char*)0)))
162 static size_t cpu_register_map[] = {
163 OFFSET_OF(CONTEXT, Eax),
164 OFFSET_OF(CONTEXT, Ecx),
165 OFFSET_OF(CONTEXT, Edx),
166 OFFSET_OF(CONTEXT, Ebx),
167 OFFSET_OF(CONTEXT, Esp),
168 OFFSET_OF(CONTEXT, Ebp),
169 OFFSET_OF(CONTEXT, Esi),
170 OFFSET_OF(CONTEXT, Edi),
171 OFFSET_OF(CONTEXT, Eip),
172 OFFSET_OF(CONTEXT, EFlags),
173 OFFSET_OF(CONTEXT, SegCs),
174 OFFSET_OF(CONTEXT, SegSs),
175 OFFSET_OF(CONTEXT, SegDs),
176 OFFSET_OF(CONTEXT, SegEs),
177 OFFSET_OF(CONTEXT, SegFs),
178 OFFSET_OF(CONTEXT, SegGs),
182 static size_t cpu_register_map[] = {
183 OFFSET_OF(CONTEXT, Gpr0),
184 OFFSET_OF(CONTEXT, Gpr1),
185 OFFSET_OF(CONTEXT, Gpr2),
186 OFFSET_OF(CONTEXT, Gpr3),
187 OFFSET_OF(CONTEXT, Gpr4),
188 OFFSET_OF(CONTEXT, Gpr5),
189 OFFSET_OF(CONTEXT, Gpr6),
190 OFFSET_OF(CONTEXT, Gpr7),
191 OFFSET_OF(CONTEXT, Gpr8),
192 OFFSET_OF(CONTEXT, Gpr9),
193 OFFSET_OF(CONTEXT, Gpr10),
194 OFFSET_OF(CONTEXT, Gpr11),
195 OFFSET_OF(CONTEXT, Gpr12),
196 OFFSET_OF(CONTEXT, Gpr13),
197 OFFSET_OF(CONTEXT, Gpr14),
198 OFFSET_OF(CONTEXT, Gpr15),
199 OFFSET_OF(CONTEXT, Gpr16),
200 OFFSET_OF(CONTEXT, Gpr17),
201 OFFSET_OF(CONTEXT, Gpr18),
202 OFFSET_OF(CONTEXT, Gpr19),
203 OFFSET_OF(CONTEXT, Gpr20),
204 OFFSET_OF(CONTEXT, Gpr21),
205 OFFSET_OF(CONTEXT, Gpr22),
206 OFFSET_OF(CONTEXT, Gpr23),
207 OFFSET_OF(CONTEXT, Gpr24),
208 OFFSET_OF(CONTEXT, Gpr25),
209 OFFSET_OF(CONTEXT, Gpr26),
210 OFFSET_OF(CONTEXT, Gpr27),
211 OFFSET_OF(CONTEXT, Gpr28),
212 OFFSET_OF(CONTEXT, Gpr29),
213 OFFSET_OF(CONTEXT, Gpr30),
214 OFFSET_OF(CONTEXT, Gpr31),
215 OFFSET_OF(CONTEXT, Fpr0),
216 OFFSET_OF(CONTEXT, Fpr1),
217 OFFSET_OF(CONTEXT, Fpr2),
218 OFFSET_OF(CONTEXT, Fpr3),
219 OFFSET_OF(CONTEXT, Fpr4),
220 OFFSET_OF(CONTEXT, Fpr5),
221 OFFSET_OF(CONTEXT, Fpr6),
222 OFFSET_OF(CONTEXT, Fpr7),
223 OFFSET_OF(CONTEXT, Fpr8),
224 OFFSET_OF(CONTEXT, Fpr9),
225 OFFSET_OF(CONTEXT, Fpr10),
226 OFFSET_OF(CONTEXT, Fpr11),
227 OFFSET_OF(CONTEXT, Fpr12),
228 OFFSET_OF(CONTEXT, Fpr13),
229 OFFSET_OF(CONTEXT, Fpr14),
230 OFFSET_OF(CONTEXT, Fpr15),
231 OFFSET_OF(CONTEXT, Fpr16),
232 OFFSET_OF(CONTEXT, Fpr17),
233 OFFSET_OF(CONTEXT, Fpr18),
234 OFFSET_OF(CONTEXT, Fpr19),
235 OFFSET_OF(CONTEXT, Fpr20),
236 OFFSET_OF(CONTEXT, Fpr21),
237 OFFSET_OF(CONTEXT, Fpr22),
238 OFFSET_OF(CONTEXT, Fpr23),
239 OFFSET_OF(CONTEXT, Fpr24),
240 OFFSET_OF(CONTEXT, Fpr25),
241 OFFSET_OF(CONTEXT, Fpr26),
242 OFFSET_OF(CONTEXT, Fpr27),
243 OFFSET_OF(CONTEXT, Fpr28),
244 OFFSET_OF(CONTEXT, Fpr29),
245 OFFSET_OF(CONTEXT, Fpr30),
246 OFFSET_OF(CONTEXT, Fpr31),
248 OFFSET_OF(CONTEXT, Iar),
249 OFFSET_OF(CONTEXT, Msr),
250 OFFSET_OF(CONTEXT, Cr),
251 OFFSET_OF(CONTEXT, Lr),
252 OFFSET_OF(CONTEXT, Ctr),
253 OFFSET_OF(CONTEXT, Xer),
254 /* FIXME: MQ is missing? OFFSET_OF(CONTEXT, Mq), */
255 /* see gdb/nlm/ppc.c */
258 # error "Define the registers map for your CPU"
263 static const size_t cpu_num_regs = (sizeof(cpu_register_map) / sizeof(cpu_register_map[0]));
265 static inline unsigned long* cpu_register(struct gdb_context* gdbctx, unsigned idx)
267 assert(idx < cpu_num_regs);
268 return (unsigned long*)((char*)&gdbctx->context + cpu_register_map[idx]);
271 static inline BOOL cpu_enter_stepping(struct gdb_context* gdbctx)
274 gdbctx->context.EFlags |= 0x100;
278 # define MSR_SE (1<<10)
280 gdbctx->context.Msr |= MSR_SE;
283 #error "Define step mode enter for your CPU"
288 static inline BOOL cpu_leave_stepping(struct gdb_context* gdbctx)
291 /* The Win32 debug API always resets the Step bit in EFlags after
292 * a single step instruction, so we don't need to clear when the
297 gdbctx->context.Msr &= MSR_SE;
300 #error "Define step mode leave for your CPU"
306 #define DR7_CONTROL_SHIFT 16
307 #define DR7_CONTROL_SIZE 4
309 #define DR7_RW_EXECUTE (0x0)
310 #define DR7_RW_WRITE (0x1)
311 #define DR7_RW_READ (0x3)
313 #define DR7_LEN_1 (0x0)
314 #define DR7_LEN_2 (0x4)
315 #define DR7_LEN_4 (0xC)
317 #define DR7_LOCAL_ENABLE_SHIFT 0
318 #define DR7_GLOBAL_ENABLE_SHIFT 1
319 #define DR7_ENABLE_SIZE 2
321 #define DR7_LOCAL_ENABLE_MASK (0x55)
322 #define DR7_GLOBAL_ENABLE_MASK (0xAA)
324 #define DR7_CONTROL_RESERVED (0xFC00)
325 #define DR7_LOCAL_SLOWDOWN (0x100)
326 #define DR7_GLOBAL_SLOWDOWN (0x200)
328 #define DR7_ENABLE_MASK(dr) (1<<(DR7_LOCAL_ENABLE_SHIFT+DR7_ENABLE_SIZE*(dr)))
329 #define IS_DR7_SET(ctrl,dr) ((ctrl)&DR7_ENABLE_MASK(dr))
331 static inline int i386_get_unused_DR(struct gdb_context* gdbctx,
334 if (!IS_DR7_SET(gdbctx->context.Dr7, 0))
336 *r = &gdbctx->context.Dr0;
339 if (!IS_DR7_SET(gdbctx->context.Dr7, 1))
341 *r = &gdbctx->context.Dr1;
344 if (!IS_DR7_SET(gdbctx->context.Dr7, 2))
346 *r = &gdbctx->context.Dr2;
349 if (!IS_DR7_SET(gdbctx->context.Dr7, 3))
351 *r = &gdbctx->context.Dr3;
358 /******************************************************************
363 * -1 if operation isn't supported by CPU
365 static inline int cpu_insert_Xpoint(struct gdb_context* gdbctx,
366 struct gdb_ctx_Xpoint* xpt, size_t len)
378 if (len != 1) return 0;
379 if (!ReadProcessMemory(gdbctx->process->handle, xpt->addr, &ch, 1, &sz) || sz != 1) return 0;
382 if (!WriteProcessMemory(gdbctx->process->handle, xpt->addr, &ch, 1, &sz) || sz != 1) return 0;
385 bits = DR7_RW_EXECUTE;
393 if ((reg = i386_get_unused_DR(gdbctx, &pr)) == -1) return 0;
394 *pr = (unsigned long)xpt->addr;
395 if (xpt->type != '1') switch (len)
397 case 4: bits |= DR7_LEN_4; break;
398 case 2: bits |= DR7_LEN_2; break;
399 case 1: bits |= DR7_LEN_1; break;
403 /* clear old values */
404 gdbctx->context.Dr7 &= ~(0x0F << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg));
405 /* set the correct ones */
406 gdbctx->context.Dr7 |= bits << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg);
407 gdbctx->context.Dr7 |= DR7_ENABLE_MASK(reg) | DR7_LOCAL_SLOWDOWN;
410 fprintf(stderr, "Unknown bp type %c\n", xpt->type);
414 #elif defined(__powerpc__)
421 if (len != 4) return 0;
422 if (!ReadProcessMemory(gdbctx->process->handle, xpt->addr, &xbp, 4, &sz) || sz != 4) return 0;
424 xbp = 0x7d821008; /* 7d 82 10 08 ... in big endian */
425 if (!WriteProcessMemory(gdbctx->process->handle, xpt->addr, &xbp, 4, &sz) || sz != 4) return 0;
428 fprintf(stderr, "Unknown/unsupported bp type %c\n", xpt->type);
433 #error "Define insert Xpoint for your CPU"
438 /******************************************************************
443 * -1 if operation isn't supported by CPU
445 static inline BOOL cpu_remove_Xpoint(struct gdb_context* gdbctx,
446 struct gdb_ctx_Xpoint* xpt, size_t len)
455 if (len != 1) return 0;
456 ch = (unsigned char)xpt->val;
457 if (!WriteProcessMemory(gdbctx->process->handle, xpt->addr, &ch, 1, &sz) || sz != 1) return 0;
462 /* simply disable the entry */
463 gdbctx->context.Dr7 &= ~DR7_ENABLE_MASK(xpt->val);
466 fprintf(stderr, "Unknown bp type %c\n", xpt->type);
470 #elif defined(__powerpc__)
477 if (len != 4) return 0;
479 if (!WriteProcessMemory(gdbctx->process->handle, xpt->addr, &xbp, 4, &sz) || sz != 4) return 0;
485 fprintf(stderr, "Unknown/unsupported bp type %c\n", xpt->type);
490 #error "Define remove Xpoint for your CPU"
494 /* =============================================== *
495 * W I N 3 2 D E B U G I N T E R F A C E *
496 * =============================================== *
499 static BOOL handle_exception(struct gdb_context* gdbctx, EXCEPTION_DEBUG_INFO* exc)
501 EXCEPTION_RECORD* rec = &exc->ExceptionRecord;
504 switch (rec->ExceptionCode)
506 case EXCEPTION_ACCESS_VIOLATION:
507 case EXCEPTION_PRIV_INSTRUCTION:
508 case EXCEPTION_STACK_OVERFLOW:
509 case EXCEPTION_GUARD_PAGE:
510 gdbctx->last_sig = SIGSEGV;
513 case EXCEPTION_DATATYPE_MISALIGNMENT:
514 gdbctx->last_sig = SIGBUS;
517 case EXCEPTION_SINGLE_STEP:
519 case EXCEPTION_BREAKPOINT:
520 gdbctx->last_sig = SIGTRAP;
523 case EXCEPTION_FLT_DENORMAL_OPERAND:
524 case EXCEPTION_FLT_DIVIDE_BY_ZERO:
525 case EXCEPTION_FLT_INEXACT_RESULT:
526 case EXCEPTION_FLT_INVALID_OPERATION:
527 case EXCEPTION_FLT_OVERFLOW:
528 case EXCEPTION_FLT_STACK_CHECK:
529 case EXCEPTION_FLT_UNDERFLOW:
530 gdbctx->last_sig = SIGFPE;
533 case EXCEPTION_INT_DIVIDE_BY_ZERO:
534 case EXCEPTION_INT_OVERFLOW:
535 gdbctx->last_sig = SIGFPE;
538 case EXCEPTION_ILLEGAL_INSTRUCTION:
539 gdbctx->last_sig = SIGILL;
543 gdbctx->last_sig = SIGINT;
546 case STATUS_POSSIBLE_DEADLOCK:
547 gdbctx->last_sig = SIGALRM;
549 /* FIXME: we could also add here a O packet with additional information */
552 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
553 fprintf(stderr, "unhandled exception code %08lx\n", rec->ExceptionCode);
554 gdbctx->last_sig = SIGABRT;
561 static void handle_debug_event(struct gdb_context* gdbctx, DEBUG_EVENT* de)
565 DEBUG_CurrThread = DEBUG_GetThread(gdbctx->process, de->dwThreadId);
567 switch (de->dwDebugEventCode)
569 case CREATE_PROCESS_DEBUG_EVENT:
570 DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
571 de->u.CreateProcessInfo.hProcess,
572 de->u.CreateProcessInfo.lpImageName);
574 /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
575 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
576 fprintf(stderr, "%08lx:%08lx: create process '%s'/%p @%08lx (%ld<%ld>)\n",
577 de->dwProcessId, de->dwThreadId,
578 buffer, de->u.CreateProcessInfo.lpImageName,
579 (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
580 de->u.CreateProcessInfo.dwDebugInfoFileOffset,
581 de->u.CreateProcessInfo.nDebugInfoSize);
583 gdbctx->process = DEBUG_AddProcess(de->dwProcessId,
584 de->u.CreateProcessInfo.hProcess,
586 /* de->u.CreateProcessInfo.lpStartAddress; */
588 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
589 fprintf(stderr, "%08lx:%08lx: create thread I @%08lx\n",
590 de->dwProcessId, de->dwThreadId,
591 (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
593 assert(DEBUG_CurrThread == NULL); /* shouldn't be there */
594 DEBUG_AddThread(gdbctx->process, de->dwThreadId,
595 de->u.CreateProcessInfo.hThread,
596 de->u.CreateProcessInfo.lpStartAddress,
597 de->u.CreateProcessInfo.lpThreadLocalBase);
599 DEBUG_LoadModule32(DEBUG_CurrProcess->imageName, de->u.CreateProcessInfo.hFile,
600 de->u.CreateProcessInfo.lpBaseOfImage);
602 if (buffer[0]) /* we got a process name */
605 if (!GetBinaryTypeA( buffer, &type ))
607 /* not a Windows binary, assume it's a Unix executable then */
608 char unixname[MAX_PATH];
609 /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
610 if (wine_get_unix_file_name( buffer, unixname, sizeof(unixname) ))
612 DEBUG_ReadExecutableDbgInfo( unixname );
617 /* if it is a Windows binary, or an invalid or missing file name,
618 * we use wine itself as the main executable */
619 DEBUG_ReadExecutableDbgInfo( "wine" );
623 case LOAD_DLL_DEBUG_EVENT:
624 assert(DEBUG_CurrThread);
625 DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
626 gdbctx->process->handle,
627 de->u.LoadDll.lpImageName);
629 /* FIXME unicode: de->u.LoadDll.fUnicode */
630 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
631 fprintf(stderr, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
632 de->dwProcessId, de->dwThreadId,
633 buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
634 de->u.LoadDll.dwDebugInfoFileOffset,
635 de->u.LoadDll.nDebugInfoSize);
638 DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, de->u.LoadDll.lpBaseOfDll);
639 DEBUG_CheckDelayedBP();
640 if (DBG_IVAR(BreakOnDllLoad))
642 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
643 buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
649 case UNLOAD_DLL_DEBUG_EVENT:
650 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
651 fprintf(stderr, "%08lx:%08lx: unload DLL @%08lx\n",
652 de->dwProcessId, de->dwThreadId, (unsigned long)de->u.UnloadDll.lpBaseOfDll);
655 case EXCEPTION_DEBUG_EVENT:
656 assert(DEBUG_CurrThread);
657 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
658 fprintf(stderr, "%08lx:%08lx: exception code=%08lx\n",
659 de->dwProcessId, de->dwThreadId,
660 de->u.Exception.ExceptionRecord.ExceptionCode);
662 gdbctx->context.ContextFlags = CONTEXT_CONTROL
664 #ifdef CONTEXT_SEGMENTS
667 #ifdef CONTEXT_DEBUG_REGISTERS
668 | CONTEXT_DEBUG_REGISTERS
671 if (!GetThreadContext(DEBUG_CurrThread->handle, &gdbctx->context))
673 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
674 fprintf(stderr, "Can't get thread's context\n");
677 gdbctx->in_trap = handle_exception(gdbctx, &de->u.Exception);
680 case CREATE_THREAD_DEBUG_EVENT:
681 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
682 fprintf(stderr, "%08lx:%08lx: create thread D @%08lx\n",
683 de->dwProcessId, de->dwThreadId, (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
685 DEBUG_AddThread(gdbctx->process,
687 de->u.CreateThread.hThread,
688 de->u.CreateThread.lpStartAddress,
689 de->u.CreateThread.lpThreadLocalBase);
692 case EXIT_THREAD_DEBUG_EVENT:
693 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
694 fprintf(stderr, "%08lx:%08lx: exit thread (%ld)\n",
695 de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
697 assert(DEBUG_CurrThread);
698 DEBUG_DelThread(DEBUG_CurrThread);
701 case EXIT_PROCESS_DEBUG_EVENT:
702 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
703 fprintf(stderr, "%08lx:%08lx: exit process (%ld)\n",
704 de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
706 DEBUG_DelProcess(gdbctx->process);
707 gdbctx->process = NULL;
708 /* now signal gdb that we're done */
709 gdbctx->last_sig = SIGTERM;
710 gdbctx->in_trap = TRUE;
713 case OUTPUT_DEBUG_STRING_EVENT:
714 assert(DEBUG_CurrThread);
715 DEBUG_ProcessGetString(buffer, sizeof(buffer),
716 gdbctx->process->handle,
717 de->u.DebugString.lpDebugStringData);
718 /* FIXME unicode de->u.DebugString.fUnicode ? */
719 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
720 fprintf(stderr, "%08lx:%08lx: output debug string (%s)\n",
721 de->dwProcessId, de->dwThreadId, buffer);
725 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
726 fprintf(stderr, "%08lx:%08lx: rip error=%ld type=%ld\n",
727 de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
728 de->u.RipInfo.dwType);
732 if (gdbctx->trace & GDBPXY_TRC_WIN32_EVENT)
733 fprintf(stderr, "%08lx:%08lx: unknown event (%ld)\n",
734 de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
738 static void resume_debuggee(struct gdb_context* gdbctx, unsigned long cont)
740 if (DEBUG_CurrThread)
742 if (!SetThreadContext(DEBUG_CurrThread->handle, &gdbctx->context))
743 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
744 fprintf(stderr, "cannot set ctx on %lu\n", DEBUG_CurrThread->tid);
745 if (!ContinueDebugEvent(gdbctx->process->pid, DEBUG_CurrThread->tid, cont))
746 if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
747 fprintf(stderr, "cannot continue on %lu (%lu)\n",
748 DEBUG_CurrThread->tid, cont);
750 else if (gdbctx->trace & GDBPXY_TRC_WIN32_ERROR)
751 fprintf(stderr, "cannot find last thread (%lu)\n", DEBUG_CurrThread->tid);
754 static void wait_for_debuggee(struct gdb_context* gdbctx)
758 gdbctx->in_trap = FALSE;
759 while (WaitForDebugEvent(&de, INFINITE))
761 handle_debug_event(gdbctx, &de);
762 assert(!gdbctx->process ||
763 gdbctx->process->pid == 0 ||
764 de.dwProcessId == gdbctx->process->pid);
765 assert(!DEBUG_CurrThread || de.dwThreadId == DEBUG_CurrThread->tid);
766 if (gdbctx->in_trap) break;
767 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
771 static void detach_debuggee(struct gdb_context* gdbctx, BOOL kill)
773 cpu_leave_stepping(gdbctx);
774 resume_debuggee(gdbctx, DBG_CONTINUE);
776 DebugActiveProcessStop(gdbctx->process->pid);
777 DEBUG_DelProcess(gdbctx->process);
778 gdbctx->process = NULL;
781 static void get_process_info(struct gdb_context* gdbctx, char* buffer, size_t len)
783 unsigned long status;
785 if (!GetExitCodeProcess(gdbctx->process->handle, &status))
787 strcpy(buffer, "Unknown process");
790 if (status == STILL_ACTIVE)
792 strcpy(buffer, "Running");
795 snprintf(buffer, len, "Terminated (%lu)", status);
797 switch (GetPriorityClass(gdbctx->process->handle))
800 #ifdef ABOVE_NORMAL_PRIORITY_CLASS
801 case ABOVE_NORMAL_PRIORITY_CLASS: strcat(buffer, ", above normal priority"); break;
803 #ifdef BELOW_NORMAL_PRIORITY_CLASS
804 case BELOW_NORMAL_PRIORITY_CLASS: strcat(buffer, ", below normal priotity"); break;
806 case HIGH_PRIORITY_CLASS: strcat(buffer, ", high priority"); break;
807 case IDLE_PRIORITY_CLASS: strcat(buffer, ", idle priority"); break;
808 case NORMAL_PRIORITY_CLASS: strcat(buffer, ", normal priority"); break;
809 case REALTIME_PRIORITY_CLASS: strcat(buffer, ", realtime priority"); break;
811 strcat(buffer, "\n");
814 static void get_thread_info(struct gdb_context* gdbctx, unsigned tid,
815 char* buffer, size_t len)
818 unsigned long status;
821 /* FIXME: use the size of buffer */
822 thd = DEBUG_GetThread(gdbctx->process, tid);
825 strcpy(buffer, "No information");
828 if (GetExitCodeThread(thd->handle, &status))
830 if (status == STILL_ACTIVE)
832 /* FIXME: this is a bit brutal... some nicer way shall be found */
833 switch (status = SuspendThread(thd->handle))
836 case 0: strcpy(buffer, "Running"); break;
837 default: snprintf(buffer, len, "Suspended (%lu)", status - 1);
839 ResumeThread(thd->handle);
842 snprintf(buffer, len, "Terminated (exit code = %lu)", status);
846 strcpy(buffer, "Unknown threadID");
848 switch (prio = GetThreadPriority(thd->handle))
850 case THREAD_PRIORITY_ERROR_RETURN: break;
851 case THREAD_PRIORITY_ABOVE_NORMAL: strcat(buffer, ", priority +1 above normal"); break;
852 case THREAD_PRIORITY_BELOW_NORMAL: strcat(buffer, ", priority -1 below normal"); break;
853 case THREAD_PRIORITY_HIGHEST: strcat(buffer, ", priority +2 above normal"); break;
854 case THREAD_PRIORITY_LOWEST: strcat(buffer, ", priority -2 below normal"); break;
855 case THREAD_PRIORITY_IDLE: strcat(buffer, ", priority idle"); break;
856 case THREAD_PRIORITY_NORMAL: strcat(buffer, ", priority normal"); break;
857 case THREAD_PRIORITY_TIME_CRITICAL: strcat(buffer, ", priority time-critical"); break;
858 default: snprintf(buffer + strlen(buffer), len - strlen(buffer), ", priority = %d", prio);
860 assert(strlen(buffer) < len);
863 /* =============================================== *
864 * P A C K E T U T I L S *
865 * =============================================== *
868 enum packet_return {packet_error = 0x00, packet_ok = 0x01, packet_done = 0x02,
869 packet_last_f = 0x80};
871 static void packet_reply_grow(struct gdb_context* gdbctx, size_t size)
873 if (gdbctx->out_buf_alloc < gdbctx->out_len + size)
875 gdbctx->out_buf_alloc = ((gdbctx->out_len + size) / 32 + 1) * 32;
876 gdbctx->out_buf = realloc(gdbctx->out_buf, gdbctx->out_buf_alloc);
880 static void packet_reply_hex_to(struct gdb_context* gdbctx, const void* src, int len)
882 packet_reply_grow(gdbctx, len * 2);
883 hex_to(&gdbctx->out_buf[gdbctx->out_len], src, len);
884 gdbctx->out_len += len * 2;
887 static inline void packet_reply_hex_to_str(struct gdb_context* gdbctx, const char* src)
889 packet_reply_hex_to(gdbctx, src, strlen(src));
892 static void packet_reply_val(struct gdb_context* gdbctx, unsigned long val, int len)
896 shift = (len - 1) * 8;
897 packet_reply_grow(gdbctx, len * 2);
898 for (i = 0; i < len; i++, shift -= 8)
900 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> (shift + 4)) & 0x0F);
901 gdbctx->out_buf[gdbctx->out_len++] = hex_to0((val >> shift ) & 0x0F);
905 static inline void packet_reply_add(struct gdb_context* gdbctx, const char* str, int len)
907 packet_reply_grow(gdbctx, len);
908 memcpy(&gdbctx->out_buf[gdbctx->out_len], str, len);
909 gdbctx->out_len += len;
912 static inline void packet_reply_cat(struct gdb_context* gdbctx, const char* str)
914 packet_reply_add(gdbctx, str, strlen(str));
917 static inline void packet_reply_catc(struct gdb_context* gdbctx, char ch)
919 packet_reply_add(gdbctx, &ch, 1);
922 static void packet_reply_open(struct gdb_context* gdbctx)
924 assert(gdbctx->out_curr_packet == -1);
925 packet_reply_catc(gdbctx, '$');
926 gdbctx->out_curr_packet = gdbctx->out_len;
929 static void packet_reply_close(struct gdb_context* gdbctx)
934 plen = gdbctx->out_len - gdbctx->out_curr_packet;
935 packet_reply_catc(gdbctx, '#');
936 cksum = checksum(&gdbctx->out_buf[gdbctx->out_curr_packet], plen);
937 packet_reply_hex_to(gdbctx, &cksum, 1);
938 if (gdbctx->trace & GDBPXY_TRC_PACKET)
939 fprintf(stderr, "Reply : %*.*s\n",
940 plen, plen, &gdbctx->out_buf[gdbctx->out_curr_packet]);
941 gdbctx->out_curr_packet = -1;
944 static enum packet_return packet_reply(struct gdb_context* gdbctx, const char* packet, int len)
946 packet_reply_open(gdbctx);
948 if (len == -1) len = strlen(packet);
949 assert(memchr(packet, '$', len) == NULL && memchr(packet, '#', len) == NULL);
951 packet_reply_add(gdbctx, packet, len);
953 packet_reply_close(gdbctx);
958 static enum packet_return packet_reply_error(struct gdb_context* gdbctx, int error)
960 packet_reply_open(gdbctx);
962 packet_reply_add(gdbctx, "E", 1);
963 packet_reply_val(gdbctx, error, 1);
965 packet_reply_close(gdbctx);
970 /* =============================================== *
971 * P A C K E T H A N D L E R S *
972 * =============================================== *
975 static enum packet_return packet_reply_status(struct gdb_context* gdbctx)
977 enum packet_return ret = packet_done;
979 packet_reply_open(gdbctx);
981 if (gdbctx->process != NULL)
986 packet_reply_catc(gdbctx, 'T');
987 sig = gdbctx->last_sig;
988 packet_reply_val(gdbctx, sig, 1);
989 packet_reply_add(gdbctx, "thread:", 7);
990 packet_reply_val(gdbctx, DEBUG_CurrThread->tid, 4);
991 packet_reply_catc(gdbctx, ';');
993 for (i = 0; i < cpu_num_regs; i++)
995 /* FIXME: this call will also grow the buffer...
996 * unneeded, but not harmful
998 packet_reply_val(gdbctx, i, 1);
999 packet_reply_catc(gdbctx, ':');
1000 packet_reply_hex_to(gdbctx, cpu_register(gdbctx, i), 4);
1001 packet_reply_catc(gdbctx, ';');
1006 /* Try to put an exit code
1007 * Cannot use GetExitCodeProcess, wouldn't fit in a 8 bit value, so
1008 * just indicate the end of process and exit */
1009 packet_reply_add(gdbctx, "W00", 3);
1010 /*if (!gdbctx->extended)*/ ret |= packet_last_f;
1013 packet_reply_close(gdbctx);
1019 static enum packet_return packet_extended(struct gdb_context* gdbctx)
1021 gdbctx->extended = 1;
1026 static enum packet_return packet_last_signal(struct gdb_context* gdbctx)
1028 assert(gdbctx->in_packet_len == 0);
1029 return packet_reply_status(gdbctx);
1032 static enum packet_return packet_continue(struct gdb_context* gdbctx)
1034 /* FIXME: add support for address in packet */
1035 assert(gdbctx->in_packet_len == 0);
1036 if (DEBUG_CurrThread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1037 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1038 fprintf(stderr, "NIY: cont on %u, while last thd is %lu\n",
1039 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1040 resume_debuggee(gdbctx, DBG_CONTINUE);
1041 wait_for_debuggee(gdbctx);
1042 return packet_reply_status(gdbctx);
1045 static enum packet_return packet_continue_signal(struct gdb_context* gdbctx)
1049 /* FIXME: add support for address in packet */
1050 assert(gdbctx->in_packet_len == 2);
1051 if (DEBUG_CurrThread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1052 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1053 fprintf(stderr, "NIY: cont/sig on %u, while last thd is %lu\n",
1054 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1055 hex_from(&sig, gdbctx->in_packet, 1);
1056 /* cannot change signals on the fly */
1057 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1058 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1059 if (sig != gdbctx->last_sig)
1060 return packet_error;
1061 resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
1062 wait_for_debuggee(gdbctx);
1063 return packet_reply_status(gdbctx);
1066 static enum packet_return packet_detach(struct gdb_context* gdbctx)
1068 detach_debuggee(gdbctx, FALSE);
1069 return packet_ok | packet_last_f;
1072 static enum packet_return packet_read_registers(struct gdb_context* gdbctx)
1076 assert(gdbctx->in_trap);
1077 if (DEBUG_CurrThread->tid != gdbctx->other_thread && gdbctx->other_thread)
1078 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1079 fprintf(stderr, "NIY: read regs on %u, while last thd is %lu\n",
1080 gdbctx->other_thread, DEBUG_CurrThread->tid);
1082 packet_reply_open(gdbctx);
1084 for (i = 0; i < cpu_num_regs; i++)
1086 packet_reply_hex_to(gdbctx, cpu_register(gdbctx, i), 4);
1089 packet_reply_close(gdbctx);
1093 static enum packet_return packet_write_registers(struct gdb_context* gdbctx)
1097 assert(gdbctx->in_trap);
1098 if (DEBUG_CurrThread->tid != gdbctx->other_thread && gdbctx->other_thread)
1099 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1100 fprintf(stderr, "NIY: write regs on %u, while last thd is %lu\n",
1101 gdbctx->other_thread, DEBUG_CurrThread->tid);
1102 if (gdbctx->in_packet_len < cpu_num_regs * 2) return packet_error;
1103 for (i = 0; i < cpu_num_regs; i++)
1104 hex_from(cpu_register(gdbctx, i), &gdbctx->in_packet[8 * i], 4);
1108 static enum packet_return packet_kill(struct gdb_context* gdbctx)
1110 detach_debuggee(gdbctx, TRUE);
1112 if (!gdbctx->extended)
1113 /* dunno whether GDB cares or not */
1117 /* assume we can't really answer something here */
1118 /* return packet_done; */
1121 static enum packet_return packet_thread(struct gdb_context* gdbctx)
1126 switch (gdbctx->in_packet[0])
1130 if (gdbctx->in_packet[1] == '-')
1131 thread = -strtol(gdbctx->in_packet + 2, &end, 16);
1133 thread = strtol(gdbctx->in_packet + 1, &end, 16);
1134 if (end == NULL || end > gdbctx->in_packet + gdbctx->in_packet_len)
1136 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1137 fprintf(stderr, "Cannot get threadid %*.*s\n",
1138 gdbctx->in_packet_len - 1, gdbctx->in_packet_len - 1,
1139 gdbctx->in_packet + 1);
1140 return packet_error;
1142 if (gdbctx->in_packet[0] == 'c')
1143 gdbctx->exec_thread = thread;
1145 gdbctx->other_thread = thread;
1148 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1149 fprintf(stderr, "Unknown thread sub-command %c\n", gdbctx->in_packet[0]);
1150 return packet_error;
1154 static enum packet_return packet_read_memory(struct gdb_context* gdbctx)
1157 size_t len, blk_len, nread;
1159 unsigned long r = 0;
1161 assert(gdbctx->in_trap);
1162 /* FIXME:check in_packet_len for reading %p,%x */
1163 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2) return packet_error;
1164 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1165 fprintf(stderr, "read mem at %p for %u bytes\n", addr, len);
1166 for (nread = 0; nread < len > 0; nread += r, addr += r)
1168 blk_len = min(sizeof(buffer), len - nread);
1169 if (!ReadProcessMemory(gdbctx->process->handle, addr, buffer, blk_len, &r) ||
1172 /* fail at first address, return error */
1173 if (nread == 0) return packet_reply_error(gdbctx, EFAULT);
1174 /* something has already been read, return partial information */
1177 if (nread == 0) packet_reply_open(gdbctx);
1178 packet_reply_hex_to(gdbctx, buffer, r);
1180 packet_reply_close(gdbctx);
1184 static enum packet_return packet_write_memory(struct gdb_context* gdbctx)
1187 size_t len, blk_len;
1192 assert(gdbctx->in_trap);
1193 ptr = memchr(gdbctx->in_packet, ':', gdbctx->in_packet_len);
1196 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1197 fprintf(stderr, "cannot find ':' in %*.*s\n",
1198 gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
1199 return packet_error;
1203 if (sscanf(gdbctx->in_packet, "%p,%x", &addr, &len) != 2)
1205 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1206 fprintf(stderr, "cannot scan addr,len in %s\n", gdbctx->in_packet);
1207 return packet_error;
1209 if (ptr - gdbctx->in_packet + len * 2 != gdbctx->in_packet_len)
1211 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1212 fprintf(stderr, "wrong sizes %u <> %u\n",
1213 ptr - gdbctx->in_packet + len * 2, gdbctx->in_packet_len);
1214 return packet_error;
1216 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1217 fprintf(stderr, "write %u bytes at %p\n", len, addr);
1220 blk_len = min(sizeof(buffer), len);
1221 hex_from(buffer, ptr, blk_len);
1225 ret = WriteProcessMemory(gdbctx->process->handle, addr, buffer, blk_len, &w);
1226 if (!ret || w != blk_len)
1233 return packet_ok; /* FIXME: error while writing ? */
1236 static enum packet_return packet_write_register(struct gdb_context* gdbctx)
1242 assert(gdbctx->in_trap);
1243 if (DEBUG_CurrThread->tid != gdbctx->other_thread && gdbctx->other_thread)
1244 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1245 fprintf(stderr, "NIY: read reg on %u, while last thd is %lu\n",
1246 gdbctx->other_thread, DEBUG_CurrThread->tid);
1248 ptr = memchr(gdbctx->in_packet, '=', gdbctx->in_packet_len);
1250 reg = strtoul(gdbctx->in_packet, &end, 16);
1251 if (end == NULL || reg > cpu_num_regs)
1253 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1254 fprintf(stderr, "invalid register index %s\n", gdbctx->in_packet);
1255 /* FIXME: if just the reg is above cpu_num_regs, don't tell gdb
1256 * it wouldn't matter too much, and it fakes our support for all regs
1258 return (end == NULL) ? packet_error : packet_ok;
1260 if (ptr + 8 - gdbctx->in_packet != gdbctx->in_packet_len)
1262 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1263 fprintf(stderr, "wrong sizes %u <> %u\n",
1264 ptr + 8 - gdbctx->in_packet, gdbctx->in_packet_len);
1265 return packet_error;
1267 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1268 fprintf(stderr, "Writing reg %u <= %*.*s\n",
1269 reg, gdbctx->in_packet_len - (ptr - gdbctx->in_packet),
1270 gdbctx->in_packet_len - (ptr - gdbctx->in_packet), ptr);
1271 hex_from(cpu_register(gdbctx, reg), ptr, 4);
1275 static void packet_query_monitor_wnd_helper(struct gdb_context* gdbctx, HWND hWnd, int indent)
1283 if (!GetClassName(hWnd, clsName, sizeof(clsName)))
1284 strcpy(clsName, "-- Unknown --");
1285 if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
1286 strcpy(wndName, "-- Empty --");
1288 packet_reply_open(gdbctx);
1289 packet_reply_catc(gdbctx, 'O');
1290 snprintf(buffer, sizeof(buffer),
1291 "%*s%04x%*s%-17.17s %08lx %08lx %.14s\n",
1292 indent, "", (UINT)hWnd, 13 - indent, "",
1293 clsName, GetWindowLong(hWnd, GWL_STYLE),
1294 GetWindowLong(hWnd, GWL_WNDPROC), wndName);
1295 packet_reply_hex_to_str(gdbctx, buffer);
1296 packet_reply_close(gdbctx);
1298 if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
1299 packet_query_monitor_wnd_helper(gdbctx, child, indent + 1);
1300 } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
1303 static void packet_query_monitor_wnd(struct gdb_context* gdbctx, int len, const char* str)
1307 /* we do the output in several 'O' packets, with the last one being just OK for
1308 * marking the end of the output */
1309 packet_reply_open(gdbctx);
1310 packet_reply_catc(gdbctx, 'O');
1311 snprintf(buffer, sizeof(buffer),
1312 "%-16.16s %-17.17s %-8.8s %s\n",
1313 "hwnd", "Class Name", " Style", " WndProc Text");
1314 packet_reply_hex_to_str(gdbctx, buffer);
1315 packet_reply_close(gdbctx);
1317 /* FIXME: could also add a pmt to this command in str... */
1318 packet_query_monitor_wnd_helper(gdbctx, GetDesktopWindow(), 0);
1319 packet_reply(gdbctx, "OK", 2);
1322 static void packet_query_monitor_process(struct gdb_context* gdbctx, int len, const char* str)
1324 HANDLE snap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
1327 PROCESSENTRY32 entry;
1330 if (snap == INVALID_HANDLE_VALUE)
1333 entry.dwSize = sizeof(entry);
1334 ok = Process32First( snap, &entry );
1336 /* we do the output in several 'O' packets, with the last one being just OK for
1337 * marking the end of the output */
1339 packet_reply_open(gdbctx);
1340 packet_reply_catc(gdbctx, 'O');
1341 snprintf(buffer, sizeof(buffer),
1342 " %-8.8s %-8.8s %-8.8s %s\n",
1343 "pid", "threads", "parent", "executable" );
1344 packet_reply_hex_to_str(gdbctx, buffer);
1345 packet_reply_close(gdbctx);
1350 if (entry.th32ProcessID == gdbctx->process->pid) deco = '>';
1351 packet_reply_open(gdbctx);
1352 packet_reply_catc(gdbctx, 'O');
1353 snprintf(buffer, sizeof(buffer),
1354 "%c%08lx %-8ld %08lx '%s'\n",
1355 deco, entry.th32ProcessID, entry.cntThreads,
1356 entry.th32ParentProcessID, entry.szExeFile);
1357 packet_reply_hex_to_str(gdbctx, buffer);
1358 packet_reply_close(gdbctx);
1359 ok = Process32Next(snap, &entry);
1362 packet_reply(gdbctx, "OK", 2);
1365 static void packet_query_monitor_mem(struct gdb_context* gdbctx, int len, const char* str)
1367 MEMORY_BASIC_INFORMATION mbi;
1374 /* we do the output in several 'O' packets, with the last one being just OK for
1375 * marking the end of the output */
1376 packet_reply_open(gdbctx);
1377 packet_reply_catc(gdbctx, 'O');
1378 packet_reply_hex_to_str(gdbctx, "Address Size State Type RWX\n");
1379 packet_reply_close(gdbctx);
1381 while (VirtualQueryEx(gdbctx->process->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
1385 case MEM_COMMIT: state = "commit "; break;
1386 case MEM_FREE: state = "free "; break;
1387 case MEM_RESERVE: state = "reserve"; break;
1388 default: state = "??? "; break;
1390 if (mbi.State != MEM_FREE)
1394 case MEM_IMAGE: type = "image "; break;
1395 case MEM_MAPPED: type = "mapped "; break;
1396 case MEM_PRIVATE: type = "private"; break;
1397 case 0: type = " "; break;
1398 default: type = "??? "; break;
1400 memset(prot, ' ' , sizeof(prot)-1);
1401 prot[sizeof(prot)-1] = '\0';
1402 if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1404 if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
1406 if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
1408 if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
1416 packet_reply_open(gdbctx);
1417 snprintf(buffer, sizeof(buffer),
1418 "%08lx %08lx %s %s %s\n",
1419 (DWORD)addr, mbi.RegionSize, state, type, prot);
1420 packet_reply_catc(gdbctx, 'O');
1421 packet_reply_hex_to_str(gdbctx, buffer);
1422 packet_reply_close(gdbctx);
1424 if (addr + mbi.RegionSize < addr) /* wrap around ? */
1426 addr += mbi.RegionSize;
1428 packet_reply(gdbctx, "OK", 2);
1431 static void packet_query_monitor_trace(struct gdb_context* gdbctx,
1432 int len, const char* str)
1438 snprintf(buffer, sizeof(buffer), "trace=%x\n", gdbctx->trace);
1440 else if (len >= 2 && str[0] == '=')
1442 unsigned val = atoi(&str[1]);
1443 snprintf(buffer, sizeof(buffer), "trace: %x => %x\n", gdbctx->trace, val);
1444 gdbctx->trace = val;
1448 /* FIXME: ugly but can use error packet here */
1449 packet_reply_cat(gdbctx, "E00");
1452 packet_reply_open(gdbctx);
1453 packet_reply_hex_to_str(gdbctx, buffer);
1454 packet_reply_close(gdbctx);
1458 static void packet_query_monitor_linear(struct gdb_context* gdbctx,
1459 int len, const char* str)
1466 while (len > 0 && (*str == ' ' || *str == '\t'))
1470 /* FIXME: do a better scanning (allow both decimal and hex numbers) */
1471 if (!len || sscanf(str, "%x:%x", &seg, &ofs) != 2)
1473 packet_reply_error(gdbctx, 0);
1478 if (gdbctx->context.EFlags & 0x00020000) linear = (LOWORD(seg) << 4) + ofs;
1479 /* linux system selector ? */
1480 else if (!(seg & 4) || ((seg >> 3) < 17)) linear = ofs;
1481 /* standard selector */
1482 else if (GetThreadSelectorEntry(gdbctx->process->threads->handle, seg, &le))
1483 linear = (le.HighWord.Bits.BaseHi << 24) + (le.HighWord.Bits.BaseMid << 16) +
1487 snprintf(buffer, sizeof(buffer), "0x%x", linear);
1488 packet_reply_open(gdbctx);
1489 packet_reply_hex_to_str(gdbctx, buffer);
1490 packet_reply_close(gdbctx);
1499 void (*handler)(struct gdb_context*, int, const char*);
1502 {0, "wnd", 3, packet_query_monitor_wnd},
1503 {0, "window", 6, packet_query_monitor_wnd},
1504 {0, "proc", 4, packet_query_monitor_process},
1505 {0, "process", 7, packet_query_monitor_process},
1506 {0, "mem", 3, packet_query_monitor_mem},
1507 {1, "trace", 5, packet_query_monitor_trace},
1509 {1, "linear", 6, packet_query_monitor_linear},
1514 static enum packet_return packet_query_remote_command(struct gdb_context* gdbctx,
1515 const char* hxcmd, size_t len)
1518 struct query_detail* qd;
1520 assert((len & 1) == 0 && len < 2 * sizeof(buffer));
1522 hex_from(buffer, hxcmd, len);
1524 for (qd = &query_details[0]; qd->name != NULL; qd++)
1526 if (len < qd->len || strncmp(buffer, qd->name, qd->len) != 0) continue;
1527 if (!qd->with_arg && len != qd->len) continue;
1529 (qd->handler)(gdbctx, len - qd->len, buffer + qd->len);
1532 return packet_reply_error(gdbctx, EINVAL);
1535 static enum packet_return packet_query(struct gdb_context* gdbctx)
1537 switch (gdbctx->in_packet[0])
1540 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1544 packet_reply_open(gdbctx);
1545 packet_reply_add(gdbctx, "m", 1);
1546 for (thd = gdbctx->process->threads; thd; thd = thd->next)
1548 packet_reply_val(gdbctx, thd->tid, 4);
1549 if (thd->next != NULL)
1550 packet_reply_add(gdbctx, ",", 1);
1552 packet_reply_close(gdbctx);
1555 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1559 packet_reply_open(gdbctx);
1560 packet_reply_catc(gdbctx, 'O');
1561 get_process_info(gdbctx, result, sizeof(result));
1562 packet_reply_hex_to_str(gdbctx, result);
1563 packet_reply_close(gdbctx);
1568 if (strncmp(gdbctx->in_packet + 1, "ThreadInfo", gdbctx->in_packet_len - 1) == 0)
1570 packet_reply(gdbctx, "l", 1);
1573 else if (strncmp(gdbctx->in_packet + 1, "ProcessInfo", gdbctx->in_packet_len - 1) == 0)
1575 packet_reply(gdbctx, "l", 1);
1580 if (gdbctx->in_packet_len == 1)
1583 /* FIXME: doc says 16 bit val ??? */
1584 /* grab first created thread, aka last in list */
1585 assert(gdbctx->process && gdbctx->process->threads);
1586 for (thd = gdbctx->process->threads; thd->next; thd = thd->next);
1587 packet_reply_open(gdbctx);
1588 packet_reply_add(gdbctx, "QC", 2);
1589 packet_reply_val(gdbctx, thd->tid, 4);
1590 packet_reply_close(gdbctx);
1595 if (strncmp(gdbctx->in_packet, "Offsets", gdbctx->in_packet_len) == 0)
1599 if (gdbctx->wine_segs[0] == 0 && gdbctx->wine_segs[1] == 0 &&
1600 gdbctx->wine_segs[2] == 0)
1601 return packet_error;
1602 snprintf(buf, sizeof(buf),
1603 "Text=%08lx;Data=%08lx;Bss=%08lx",
1604 gdbctx->wine_segs[0], gdbctx->wine_segs[1],
1605 gdbctx->wine_segs[2]);
1606 return packet_reply(gdbctx, buf, -1);
1610 if (gdbctx->in_packet_len > 5 && strncmp(gdbctx->in_packet, "Rcmd,", 5) == 0)
1612 return packet_query_remote_command(gdbctx, gdbctx->in_packet + 5,
1613 gdbctx->in_packet_len - 5);
1617 if (strncmp(gdbctx->in_packet, "Symbol::", gdbctx->in_packet_len) == 0)
1621 if (gdbctx->in_packet_len > 15 &&
1622 strncmp(gdbctx->in_packet, "ThreadExtraInfo", 15) == 0 &&
1623 gdbctx->in_packet[15] == ',')
1629 tid = strtol(gdbctx->in_packet + 16, &end, 16);
1630 if (end == NULL) break;
1631 get_thread_info(gdbctx, tid, result, sizeof(result));
1632 packet_reply_open(gdbctx);
1633 packet_reply_hex_to_str(gdbctx, result);
1634 packet_reply_close(gdbctx);
1639 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1640 fprintf(stderr, "Unknown or malformed query %*.*s\n",
1641 gdbctx->in_packet_len, gdbctx->in_packet_len, gdbctx->in_packet);
1642 return packet_error;
1645 static enum packet_return packet_step(struct gdb_context* gdbctx)
1647 /* FIXME: add support for address in packet */
1648 assert(gdbctx->in_packet_len == 0);
1649 if (DEBUG_CurrThread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1650 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1651 fprintf(stderr, "NIY: step on %u, while last thd is %lu\n",
1652 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1653 if (!cpu_enter_stepping(gdbctx)) return packet_error;
1654 resume_debuggee(gdbctx, DBG_CONTINUE);
1655 wait_for_debuggee(gdbctx);
1656 if (!cpu_leave_stepping(gdbctx)) return packet_error;
1657 return packet_reply_status(gdbctx);
1661 static enum packet_return packet_step_signal(struct gdb_context* gdbctx)
1665 /* FIXME: add support for address in packet */
1666 assert(gdbctx->in_packet_len == 2);
1667 if (DEBUG_CurrThread->tid != gdbctx->exec_thread && gdbctx->exec_thread)
1668 if (gdbctx->trace & GDBPXY_TRC_COMMAND_ERROR)
1669 fprintf(stderr, "NIY: step/sig on %u, while last thd is %u\n",
1670 gdbctx->exec_thread, DEBUG_CurrThread->tid);
1671 hex_from(&sig, gdbctx->in_packet, 1);
1672 /* cannot change signals on the fly */
1673 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1674 fprintf(stderr, "sigs: %u %u\n", sig, gdbctx->last_sig);
1675 if (sig != gdbctx->last_sig)
1676 return packet_error;
1677 resume_debuggee(gdbctx, DBG_EXCEPTION_NOT_HANDLED);
1678 wait_for_debuggee(gdbctx);
1679 return packet_reply_status(gdbctx);
1683 static enum packet_return packet_thread_alive(struct gdb_context* gdbctx)
1688 tid = strtol(gdbctx->in_packet, &end, 16);
1689 if (tid == -1 || tid == 0)
1690 return packet_reply_error(gdbctx, EINVAL);
1691 if (DEBUG_GetThread(gdbctx->process, tid) != NULL)
1693 return packet_reply_error(gdbctx, ESRCH);
1696 static enum packet_return packet_remove_breakpoint(struct gdb_context* gdbctx)
1700 struct gdb_ctx_Xpoint* xpt;
1702 /* FIXME: check packet_len */
1703 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1704 gdbctx->in_packet[1] != ',' ||
1705 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1706 return packet_error;
1707 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1708 fprintf(stderr, "remove bp %p[%u] typ=%c\n",
1709 addr, len, gdbctx->in_packet[0]);
1710 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1712 if (xpt->addr == addr && xpt->type == gdbctx->in_packet[0])
1714 switch (cpu_remove_Xpoint(gdbctx, xpt, len))
1716 case 1: xpt->type = -1; return packet_ok;
1717 case 0: return packet_error;
1718 case -1: return packet_done;
1723 return packet_error;
1726 static enum packet_return packet_set_breakpoint(struct gdb_context* gdbctx)
1730 struct gdb_ctx_Xpoint* xpt;
1732 /* FIXME: check packet_len */
1733 if (gdbctx->in_packet[0] < '0' || gdbctx->in_packet[0] > '4' ||
1734 gdbctx->in_packet[1] != ',' ||
1735 sscanf(gdbctx->in_packet + 2, "%p,%x", &addr, &len) != 2)
1736 return packet_error;
1737 if (gdbctx->trace & GDBPXY_TRC_COMMAND)
1738 fprintf(stderr, "set bp %p[%u] typ=%c\n",
1739 addr, len, gdbctx->in_packet[0]);
1740 /* because of packet command handling, this should be made idempotent */
1741 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1743 if (xpt->addr == addr && xpt->type == gdbctx->in_packet[0])
1744 return packet_ok; /* nothing to do */
1746 /* really set the Xpoint */
1747 for (xpt = &gdbctx->Xpoints[NUM_XPOINT - 1]; xpt >= gdbctx->Xpoints; xpt--)
1749 if (xpt->type == -1)
1752 xpt->type = gdbctx->in_packet[0];
1753 switch (cpu_insert_Xpoint(gdbctx, xpt, len))
1755 case 1: return packet_ok;
1756 case 0: return packet_error;
1757 case -1: return packet_done;
1762 /* no more entries... eech */
1763 fprintf(stderr, "Running out of spots for {break|watch}points\n");
1764 return packet_error;
1767 /* =============================================== *
1768 * P A C K E T I N F R A S T R U C T U R E *
1769 * =============================================== *
1775 enum packet_return (*handler)(struct gdb_context* gdbctx);
1778 static struct packet_entry packet_entries[] =
1780 /* {'!', packet_extended}, */
1781 {'?', packet_last_signal},
1782 {'c', packet_continue},
1783 {'C', packet_continue_signal},
1784 {'D', packet_detach},
1785 {'g', packet_read_registers},
1786 {'G', packet_write_registers},
1788 {'H', packet_thread},
1789 {'m', packet_read_memory},
1790 {'M', packet_write_memory},
1791 /* {'p', packet_read_register}, doesn't seem needed */
1792 {'P', packet_write_register},
1793 {'q', packet_query},
1795 /*{'S', packet_step_signal}, hard(er) to implement */
1796 {'T', packet_thread_alive},
1797 {'z', packet_remove_breakpoint},
1798 {'Z', packet_set_breakpoint},
1801 static BOOL extract_packets(struct gdb_context* gdbctx)
1805 unsigned char in_cksum, loc_cksum;
1807 enum packet_return ret = packet_error;
1810 while ((ret & packet_last_f) == 0)
1812 if (gdbctx->in_len && (gdbctx->trace & GDBPXY_TRC_LOWLEVEL))
1813 fprintf(stderr, "in-buf: %*.*s\n",
1814 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
1815 ptr = memchr(gdbctx->in_buf, '$', gdbctx->in_len);
1816 if (ptr == NULL) return FALSE;
1817 if (ptr != gdbctx->in_buf)
1819 int glen = ptr - gdbctx->in_buf; /* garbage len */
1820 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1821 fprintf(stderr, "removing garbage: %*.*s\n",
1822 glen, glen, gdbctx->in_buf);
1823 gdbctx->in_len -= glen;
1824 memmove(gdbctx->in_buf, ptr, gdbctx->in_len);
1826 end = memchr(gdbctx->in_buf + 1, '#', gdbctx->in_len);
1827 if (end == NULL) return FALSE;
1828 /* no checksum yet */
1829 if (end + 3 > gdbctx->in_buf + gdbctx->in_len) return FALSE;
1830 plen = end - gdbctx->in_buf - 1;
1831 hex_from(&in_cksum, end + 1, 1);
1832 loc_cksum = checksum(gdbctx->in_buf + 1, plen);
1833 if (loc_cksum == in_cksum)
1835 if (num_packet == 0) {
1840 write(gdbctx->sock, "+", 1);
1843 /* FIXME: should use bsearch if packet_entries was sorted */
1844 for (i = 0; i < sizeof(packet_entries)/sizeof(packet_entries[0]); i++)
1846 if (packet_entries[i].key == gdbctx->in_buf[1]) break;
1848 if (i == sizeof(packet_entries)/sizeof(packet_entries[0]))
1850 if (gdbctx->trace & GDBPXY_TRC_PACKET)
1851 fprintf(stderr, "Unknown packet request %*.*s\n",
1852 plen, plen, &gdbctx->in_buf[1]);
1856 gdbctx->in_packet = gdbctx->in_buf + 2;
1857 gdbctx->in_packet_len = plen - 1;
1858 if (gdbctx->trace & GDBPXY_TRC_PACKET)
1859 fprintf(stderr, "Packet: %c%*.*s\n",
1861 gdbctx->in_packet_len, gdbctx->in_packet_len,
1863 ret = (packet_entries[i].handler)(gdbctx);
1865 switch (ret & ~packet_last_f)
1867 case packet_error: packet_reply(gdbctx, "", 0); break;
1868 case packet_ok: packet_reply(gdbctx, "OK", 2); break;
1869 case packet_done: break;
1871 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1872 fprintf(stderr, "reply-full: %*.*s\n",
1873 gdbctx->out_len, gdbctx->out_len, gdbctx->out_buf);
1874 i = write(gdbctx->sock, gdbctx->out_buf, gdbctx->out_len);
1875 assert(i == gdbctx->out_len);
1876 /* if this fails, we'll have to use POLLOUT...
1878 gdbctx->out_len = 0;
1883 /* FIXME: if we have in our input buffer more than one packet,
1884 * it's very likely that we took too long to answer to a given packet
1885 * and gdb is sending us again the same packet
1886 * We simply drop the second packet. This will lower the risk of error,
1887 * but there's still some race conditions here
1888 * A better fix (yet not perfect) would be to have two threads:
1889 * - one managing the packets for gdb
1890 * - the second one managing the commands...
1891 * This would allow us also the reply with the '+' character (Ack of
1892 * the command) way sooner than what we do know
1894 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1895 fprintf(stderr, "dropping packet, I was too slow to respond\n");
1900 write(gdbctx->sock, "+", 1);
1901 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1902 fprintf(stderr, "dropping packet, invalid checksum %d <> %d\n", in_cksum, loc_cksum);
1904 gdbctx->in_len -= plen + 4;
1905 memmove(gdbctx->in_buf, end + 3, gdbctx->in_len);
1910 static int fetch_data(struct gdb_context* gdbctx)
1912 int len, in_len = gdbctx->in_len;
1914 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
1918 if (gdbctx->in_len + STEP > gdbctx->in_buf_alloc)
1919 gdbctx->in_buf = realloc(gdbctx->in_buf, gdbctx->in_buf_alloc += STEP);
1921 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1922 fprintf(stderr, "%d %d %*.*s\n",
1923 gdbctx->in_len, gdbctx->in_buf_alloc,
1924 gdbctx->in_len, gdbctx->in_len, gdbctx->in_buf);
1925 len = read(gdbctx->sock, gdbctx->in_buf + gdbctx->in_len, gdbctx->in_buf_alloc - gdbctx->in_len);
1926 if (len <= 0) break;
1927 gdbctx->in_len += len;
1928 assert(gdbctx->in_len <= gdbctx->in_buf_alloc);
1929 if (len < gdbctx->in_buf_alloc - gdbctx->in_len) break;
1931 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1932 fprintf(stderr, "=> %d\n", gdbctx->in_len - in_len);
1933 return gdbctx->in_len - in_len;
1936 static BOOL gdb_startup(struct gdb_context* gdbctx, DEBUG_EVENT* de, unsigned flags)
1939 struct sockaddr_in s_addrs;
1940 socklen_t s_len = sizeof(s_addrs);
1941 struct pollfd pollfd;
1942 char wine_path[MAX_PATH];
1945 /* step 1: create socket for gdb connection request */
1946 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
1948 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
1949 fprintf(stderr, "Can't create socket");
1953 if (listen(sock, 1) == -1 ||
1954 getsockname(sock, (struct sockaddr*)&s_addrs, &s_len) == -1)
1957 /* step 2: find out wine executable location (as a Unix filename) */
1958 ptr = getenv("WINELOADER");
1959 strcpy(wine_path, ptr ? ptr : "wine");
1961 fprintf(stderr, "using wine_path: %s\n", wine_path);
1962 read_elf_info(wine_path, gdbctx->wine_segs);
1964 /* step 3: fire up gdb (if requested) */
1966 fprintf(stderr, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
1970 case -1: /* error in parent... */
1971 fprintf(stderr, "Cannot create gdb\n");
1974 default: /* in parent... success */
1976 case 0: /* in child... and alive */
1983 if (!(gdb_path = getenv("WINE_GDB"))) gdb_path = "gdb";
1984 strcpy(buf,"/tmp/winegdb.XXXXXX");
1985 fd = mkstemps(buf,0);
1986 if (fd == -1) return FALSE;
1987 if ((f = fdopen(fd, "w+")) == NULL) return FALSE;
1988 fprintf(f, "file %s\n", wine_path);
1989 fprintf(f, "target remote localhost:%d\n", ntohs(s_addrs.sin_port));
1990 fprintf(f, "monitor trace=0\n");
1991 fprintf(f, "set prompt Wine-gdb>\\ \n");
1992 /* gdb 5.1 seems to require it, won't hurt anyway */
1993 fprintf(f, "sharedlibrary\n");
1994 /* tell gdb to delete this file when done handling it... */
1995 fprintf(f, "shell rm -f \"%s\"\n", buf);
1998 execlp("xterm", "xterm", "-e", gdb_path, "-x", buf, NULL);
2000 execlp(gdb_path, gdb_path, "-x", buf, NULL);
2001 assert(0); /* never reached */
2007 /* step 4: do the process internal creation */
2008 handle_debug_event(gdbctx, de);
2010 /* step 5: wait for gdb to connect actually */
2012 pollfd.events = POLLIN;
2015 switch (poll(&pollfd, 1, -1))
2018 if (pollfd.revents & POLLIN)
2021 gdbctx->sock = accept(sock, (struct sockaddr*)&s_addrs, &s_len);
2022 if (gdbctx->sock == -1)
2024 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2025 fprintf(stderr, "Connected on %d\n", gdbctx->sock);
2026 /* don't keep our small packets too long: send them ASAP back to GDB
2027 * without this, GDB really crawls
2029 setsockopt(gdbctx->sock, IPPROTO_TCP, TCP_NODELAY, (char*)&dummy, sizeof(dummy));
2033 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2034 fprintf(stderr, "poll for cnx failed (timeout)\n");
2037 if (gdbctx->trace & GDBPXY_TRC_LOWLEVEL)
2038 fprintf(stderr, "poll for cnx failed (error)\n");
2048 static BOOL gdb_init_context(struct gdb_context* gdbctx, unsigned flags)
2054 gdbctx->in_buf = NULL;
2055 gdbctx->in_buf_alloc = 0;
2057 gdbctx->out_buf = NULL;
2058 gdbctx->out_buf_alloc = 0;
2059 gdbctx->out_len = 0;
2060 gdbctx->out_curr_packet = -1;
2062 gdbctx->exec_thread = gdbctx->other_thread = 0;
2063 gdbctx->last_sig = 0;
2064 gdbctx->in_trap = FALSE;
2065 gdbctx->trace = /*GDBPXY_TRC_PACKET | GDBPXY_TRC_COMMAND |*/ GDBPXY_TRC_COMMAND_ERROR | GDBPXY_TRC_WIN32_EVENT;
2066 gdbctx->process = NULL;
2067 for (i = 0; i < NUM_XPOINT; i++)
2068 gdbctx->Xpoints[i].type = -1;
2070 /* wait for first trap */
2071 while (WaitForDebugEvent(&de, INFINITE))
2073 if (de.dwDebugEventCode == CREATE_PROCESS_DEBUG_EVENT)
2075 /* this should be the first event we get,
2076 * and the only one of this type */
2077 assert(gdbctx->process == NULL && de.dwProcessId == DEBUG_CurrPid);
2078 /*gdbctx->dwProcessId = pid; */
2079 if (!gdb_startup(gdbctx, &de, flags)) return FALSE;
2080 assert(!gdbctx->in_trap);
2084 handle_debug_event(gdbctx, &de);
2085 if (gdbctx->in_trap) break;
2087 ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
2092 BOOL DEBUG_GdbRemote(unsigned flags)
2094 struct pollfd pollfd;
2095 struct gdb_context gdbctx;
2098 for (doLoop = gdb_init_context(&gdbctx, flags); doLoop;)
2100 pollfd.fd = gdbctx.sock;
2101 pollfd.events = POLLIN;
2104 switch (poll(&pollfd, 1, -1))
2108 if (pollfd.revents & (POLLHUP | POLLERR))
2110 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2111 fprintf(stderr, "Gdb hung up\n");
2112 /* kill also debuggee process - questionnable - */
2113 detach_debuggee(&gdbctx, TRUE);
2117 if ((pollfd.revents & POLLIN) && fetch_data(&gdbctx) > 0)
2119 if (extract_packets(&gdbctx)) doLoop = FALSE;
2123 /* timeout, should never happen (infinite timeout) */
2126 if (gdbctx.trace & GDBPXY_TRC_LOWLEVEL)
2127 fprintf(stderr, "poll failed\n");