/* Wine internal debugger * Interface to Windows debugger API * Copyright 2000-2004 Eric Pouech * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include #include #include #include "debugger.h" #include "winternl.h" #include "wine/exception.h" #include "wine/library.h" #include "wine/debug.h" /* TODO list: * * - minidump * + allow winedbg in automatic mode to create a minidump (or add another option * for that) * + set a mode where winedbg would start (postmortem debugging) from a minidump * - CPU adherence * + we always assume the stack grows has an i386 (ie downwards) * - UI * + enable back the limited output (depth of structure printing and number of * lines) * + make the output as close as possible to what gdb does * - symbol management: * + symbol table loading is broken * + in symbol_get_lvalue, we don't do any scoping (as C does) between local and * global vars (we may need this to force some display for example). A solution * would be always to return arrays with: local vars, global vars, thunks * - type management: * + some bits of internal types are missing (like type casts and the address * operator) * + the type for an enum's value is always inferred as int (winedbg & dbghelp) * + most of the code implies that sizeof(void*) = sizeof(int) * + all computations should be made on long long * o expr computations are in int:s * o bitfield size is on a 4-bytes * - execution: * + set a better fix for gdb (proxy mode) than the step-mode hack * + implement function call in debuggee * + trampoline management is broken when getting 16 <=> 32 thunk destination * address * + thunking of delayed imports doesn't work as expected (ie, when stepping, * it currently stops at first insn with line number during the library * loading). We should identify this (__wine_delay_import) and set a * breakpoint instead of single stepping the library loading. * + it's wrong to copy thread->step_over_bp into process->bp[0] (when * we have a multi-thread debuggee). complete fix must include storing all * thread's step-over bp in process-wide bp array, and not to handle bp * when we have the wrong thread running into that bp */ WINE_DEFAULT_DEBUG_CHANNEL(winedbg); struct dbg_process* dbg_curr_process = NULL; struct dbg_thread* dbg_curr_thread = NULL; DWORD dbg_curr_tid; DWORD dbg_curr_pid; CONTEXT dbg_context; int dbg_curr_frame = 0; BOOL dbg_interactiveP = FALSE; static unsigned dbg_in_exception = FALSE; static char* dbg_last_cmd_line = NULL; static struct dbg_process* dbg_process_list = NULL; static enum {none_mode = 0, winedbg_mode, automatic_mode, gdb_mode} dbg_action_mode; struct dbg_internal_var dbg_internal_vars[DBG_IV_LAST]; const struct dbg_internal_var* dbg_context_vars; static HANDLE dbg_houtput; void dbg_outputA(const char* buffer, int len) { WriteFile(dbg_houtput, buffer, len, NULL, NULL); } void dbg_outputW(const WCHAR* buffer, int len) { char* ansi = NULL; int newlen; /* do a serious Unicode to ANSI conversion * FIXME: should CP_ACP be GetConsoleCP()? */ newlen = WideCharToMultiByte(CP_ACP, 0, buffer, len, NULL, 0, NULL, NULL); if (newlen) { if (!(ansi = HeapAlloc(GetProcessHeap(), 0, newlen))) return; WideCharToMultiByte(CP_ACP, 0, buffer, len, ansi, newlen, NULL, NULL); dbg_outputA(ansi, newlen); HeapFree(GetProcessHeap(), 0, ansi); } } int dbg_printf(const char* format, ...) { static char buf[4*1024]; va_list valist; int len; va_start(valist, format); len = vsnprintf(buf, sizeof(buf), format, valist); va_end(valist); if (len <= -1 || len >= sizeof(buf)) { len = sizeof(buf) - 1; buf[len] = 0; buf[len - 1] = buf[len - 2] = buf[len - 3] = '.'; } dbg_outputA(buf, len); return len; } static unsigned dbg_load_internal_vars(void) { HKEY hkey; DWORD type = REG_DWORD; DWORD val; DWORD count = sizeof(val); int i; struct dbg_internal_var* div = dbg_internal_vars; /* initializes internal vars table */ #define INTERNAL_VAR(_var,_val,_ref,_tid) \ div->val = _val; div->name = #_var; div->pval = _ref; \ div->typeid = _tid; div++; #include "intvar.h" #undef INTERNAL_VAR if (RegCreateKeyA(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) { WINE_ERR("Cannot create WineDbg key in registry\n"); return FALSE; } for (i = 0; i < DBG_IV_LAST; i++) { if (!dbg_internal_vars[i].pval) { if (!RegQueryValueEx(hkey, dbg_internal_vars[i].name, 0, &type, (LPSTR)&val, &count)) dbg_internal_vars[i].val = val; dbg_internal_vars[i].pval = &dbg_internal_vars[i].val; } } RegCloseKey(hkey); /* set up the debug variables for the CPU context */ dbg_context_vars = be_cpu->init_registers(&dbg_context); return TRUE; } static unsigned dbg_save_internal_vars(void) { HKEY hkey; int i; if (RegCreateKeyA(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) { WINE_ERR("Cannot create WineDbg key in registry\n"); return FALSE; } for (i = 0; i < DBG_IV_LAST; i++) { /* FIXME: type should be infered from basic type -if any- of intvar */ if (dbg_internal_vars[i].pval == &dbg_internal_vars[i].val) RegSetValueEx(hkey, dbg_internal_vars[i].name, 0, REG_DWORD, (const void*)dbg_internal_vars[i].pval, sizeof(*dbg_internal_vars[i].pval)); } RegCloseKey(hkey); return TRUE; } const struct dbg_internal_var* dbg_get_internal_var(const char* name) { const struct dbg_internal_var* div; for (div = &dbg_internal_vars[DBG_IV_LAST - 1]; div >= dbg_internal_vars; div--) { if (!strcmp(div->name, name)) return div; } for (div = dbg_context_vars; div->name; div++) { if (!strcasecmp(div->name, name)) return div; } return NULL; } struct dbg_process* dbg_get_process(DWORD pid) { struct dbg_process* p; for (p = dbg_process_list; p; p = p->next) if (p->pid == pid) break; return p; } struct dbg_process* dbg_add_process(DWORD pid, HANDLE h, const char* imageName) { struct dbg_process* p; if ((p = dbg_get_process(pid))) { if (p->handle != 0) { WINE_ERR("Process (%lu) is already defined\n", pid); } else { p->handle = h; p->imageName = imageName ? strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(imageName) + 1), imageName) : NULL; } return p; } if (!(p = HeapAlloc(GetProcessHeap(), 0, sizeof(struct dbg_process)))) return NULL; p->handle = h; p->pid = pid; p->imageName = imageName ? strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(imageName) + 1), imageName) : NULL; p->threads = NULL; p->continue_on_first_exception = FALSE; p->next_bp = 1; /* breakpoint 0 is reserved for step-over */ memset(p->bp, 0, sizeof(p->bp)); p->delayed_bp = NULL; p->num_delayed_bp = 0; p->next = dbg_process_list; p->prev = NULL; if (dbg_process_list) dbg_process_list->prev = p; dbg_process_list = p; return p; } void dbg_del_process(struct dbg_process* p) { int i; while (p->threads) dbg_del_thread(p->threads); for (i = 0; i < p->num_delayed_bp; i++) if (p->delayed_bp[i].is_symbol) HeapFree(GetProcessHeap(), 0, p->delayed_bp[i].u.symbol.name); HeapFree(GetProcessHeap(), 0, p->delayed_bp); if (p->prev) p->prev->next = p->next; if (p->next) p->next->prev = p->prev; if (p == dbg_process_list) dbg_process_list = p->next; if (p == dbg_curr_process) dbg_curr_process = NULL; HeapFree(GetProcessHeap(), 0, (char*)p->imageName); HeapFree(GetProcessHeap(), 0, p); } static void dbg_init_current_process(void) { } struct mod_loader_info { HANDLE handle; IMAGEHLP_MODULE* imh_mod; }; static BOOL CALLBACK mod_loader_cb(PSTR mod_name, DWORD base, void* ctx) { struct mod_loader_info* mli = (struct mod_loader_info*)ctx; if (!strcmp(mod_name, "")) { if (SymGetModuleInfo(mli->handle, base, mli->imh_mod)) return FALSE; /* stop enum */ } return TRUE; } BOOL dbg_get_debuggee_info(HANDLE hProcess, IMAGEHLP_MODULE* imh_mod) { struct mod_loader_info mli; DWORD opt; /* this will resynchronize builtin dbghelp's internal ELF module list */ SymLoadModule(hProcess, 0, 0, 0, 0, 0); mli.handle = hProcess; mli.imh_mod = imh_mod; imh_mod->SizeOfStruct = sizeof(*imh_mod); imh_mod->BaseOfImage = 0; /* this is a wine specific options to return also ELF modules in the * enumeration */ SymSetOptions((opt = SymGetOptions()) | 0x40000000); SymEnumerateModules(hProcess, mod_loader_cb, (void*)&mli); SymSetOptions(opt); return imh_mod->BaseOfImage != 0; } struct dbg_thread* dbg_get_thread(struct dbg_process* p, DWORD tid) { struct dbg_thread* t; if (!p) return NULL; for (t = p->threads; t; t = t->next) if (t->tid == tid) break; return t; } struct dbg_thread* dbg_add_thread(struct dbg_process* p, DWORD tid, HANDLE h, void* teb) { struct dbg_thread* t = HeapAlloc(GetProcessHeap(), 0, sizeof(struct dbg_thread)); if (!t) return NULL; t->handle = h; t->tid = tid; t->teb = teb; t->process = p; t->exec_mode = dbg_exec_cont; t->exec_count = 0; t->step_over_bp.enabled = FALSE; t->step_over_bp.refcount = 0; snprintf(t->name, sizeof(t->name), "0x%08lx", tid); t->next = p->threads; t->prev = NULL; if (p->threads) p->threads->prev = t; p->threads = t; return t; } static void dbg_init_current_thread(void* start) { if (start) { if (dbg_curr_process->threads && !dbg_curr_process->threads->next && /* first thread ? */ DBG_IVAR(BreakAllThreadsStartup)) { ADDRESS addr; break_set_xpoints(FALSE); addr.Mode = AddrModeFlat; addr.Offset = (DWORD)start; break_add_break(&addr, TRUE); break_set_xpoints(TRUE); } } } void dbg_del_thread(struct dbg_thread* t) { if (t->prev) t->prev->next = t->next; if (t->next) t->next->prev = t->prev; if (t == t->process->threads) t->process->threads = t->next; if (t == dbg_curr_thread) dbg_curr_thread = NULL; HeapFree(GetProcessHeap(), 0, t); } static unsigned dbg_handle_debug_event(DEBUG_EVENT* de); /****************************************************************** * dbg_attach_debuggee * * Sets the debuggee to * cofe instructs winedbg what to do when first exception is received * (break=FALSE, continue=TRUE) * wfe is set to TRUE if dbg_attach_debuggee should also proceed with all debug events * until the first exception is received (aka: attach to an already running process) */ BOOL dbg_attach_debuggee(DWORD pid, BOOL cofe, BOOL wfe) { DEBUG_EVENT de; if (!(dbg_curr_process = dbg_add_process(pid, 0, NULL))) return FALSE; if (!DebugActiveProcess(pid)) { dbg_printf("Can't attach process %lx: error %ld\n", pid, GetLastError()); dbg_del_process(dbg_curr_process); return FALSE; } dbg_curr_process->continue_on_first_exception = cofe; if (wfe) /* shall we proceed all debug events until we get an exception ? */ { dbg_interactiveP = FALSE; while (dbg_curr_process && WaitForDebugEvent(&de, INFINITE)) { if (dbg_handle_debug_event(&de)) break; } if (dbg_curr_process) dbg_interactiveP = TRUE; } return TRUE; } BOOL dbg_detach_debuggee(void) { /* remove all set breakpoints in debuggee code */ break_set_xpoints(FALSE); /* needed for single stepping (ugly). * should this be handled inside the server ??? */ be_cpu->single_step(&dbg_context, FALSE); SetThreadContext(dbg_curr_thread->handle, &dbg_context); if (dbg_in_exception) ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, DBG_CONTINUE); if (!DebugActiveProcessStop(dbg_curr_pid)) return FALSE; dbg_del_process(dbg_curr_process); return TRUE; } static unsigned dbg_fetch_context(void) { dbg_context.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER #ifdef CONTEXT_SEGMENTS | CONTEXT_SEGMENTS #endif #ifdef CONTEXT_DEBUG_REGISTERS | CONTEXT_DEBUG_REGISTERS #endif ; if (!GetThreadContext(dbg_curr_thread->handle, &dbg_context)) { WINE_WARN("Can't get thread's context\n"); return FALSE; } return TRUE; } static unsigned dbg_exception_prolog(BOOL is_debug, DWORD code) { ADDRESS addr; BOOL is_break; dbg_in_exception = TRUE; memory_get_current_pc(&addr); break_suspend_execution(); if (!is_debug) { switch (addr.Mode) { case AddrModeFlat: dbg_printf(" in 32-bit code (0x%08lx)", addr.Offset); break; case AddrModeReal: dbg_printf(" in vm86 code (%04x:%04lx)", addr.Segment, addr.Offset); break; case AddrMode1616: dbg_printf(" in 16-bit code (%04x:%04lx)", addr.Segment, addr.Offset); break; default: dbg_printf(" bad address"); } dbg_printf(".\n"); } /* this will resynchronize builtin dbghelp's internal ELF module list */ SymLoadModule(dbg_curr_process->handle, 0, 0, 0, 0, 0); /* * Do a quiet backtrace so that we have an idea of what the situation * is WRT the source files. */ stack_backtrace(dbg_curr_tid, FALSE); if (is_debug && break_should_continue(&addr, code, &dbg_curr_thread->exec_count, &is_break)) return FALSE; if (addr.Mode != dbg_curr_thread->addr_mode) { const char* name = NULL; switch (addr.Mode) { case AddrMode1616: name = "16 bit"; break; case AddrMode1632: name = "X?X??X"; break; case AddrModeReal: name = "vm86"; break; case AddrModeFlat: name = "32 bit"; break; } dbg_printf("In %s mode.\n", name); dbg_curr_thread->addr_mode = addr.Mode; } display_print(); if (!is_debug) { /* This is a real crash, dump some info */ be_cpu->print_context(dbg_curr_thread->handle, &dbg_context); stack_info(); be_cpu->print_segment_info(dbg_curr_thread->handle, &dbg_context); stack_backtrace(dbg_curr_tid, TRUE); } if (!is_debug || is_break || dbg_curr_thread->exec_mode == dbg_exec_step_over_insn || dbg_curr_thread->exec_mode == dbg_exec_step_into_insn) { ADDRESS tmp = addr; /* Show where we crashed */ dbg_curr_frame = 0; memory_disasm_one_insn(&tmp); } source_list_from_addr(&addr, 0); return TRUE; } static void dbg_exception_epilog(void) { break_restart_execution(dbg_curr_thread->exec_count); /* * This will have gotten absorbed into the breakpoint info * if it was used. Otherwise it would have been ignored. * In any case, we don't mess with it any more. */ if (dbg_curr_thread->exec_mode == dbg_exec_cont) dbg_curr_thread->exec_count = 0; dbg_in_exception = FALSE; } static DWORD dbg_handle_exception(EXCEPTION_RECORD* rec, BOOL first_chance) { BOOL is_debug = FALSE; THREADNAME_INFO* pThreadName; struct dbg_thread* pThread; assert(dbg_curr_thread); WINE_TRACE("exception=%lx first_chance=%c\n", rec->ExceptionCode, first_chance ? 'Y' : 'N'); switch (rec->ExceptionCode) { case EXCEPTION_BREAKPOINT: case EXCEPTION_SINGLE_STEP: is_debug = TRUE; break; case EXCEPTION_NAME_THREAD: pThreadName = (THREADNAME_INFO*)(rec->ExceptionInformation); if (pThreadName->dwThreadID == -1) pThread = dbg_curr_thread; else pThread = dbg_get_thread(dbg_curr_process, pThreadName->dwThreadID); if (dbg_read_memory(pThreadName->szName, pThread->name, 9)) dbg_printf("Thread ID=0x%lx renamed using MS VC6 extension (name==\"%s\")\n", pThread->tid, pThread->name); return DBG_CONTINUE; } if (first_chance && !is_debug && !DBG_IVAR(BreakOnFirstChance)) { /* pass exception to program except for debug exceptions */ return DBG_EXCEPTION_NOT_HANDLED; } if (!is_debug) { /* print some infos */ dbg_printf("%s: ", first_chance ? "First chance exception" : "Unhandled exception"); switch (rec->ExceptionCode) { case EXCEPTION_INT_DIVIDE_BY_ZERO: dbg_printf("divide by zero"); break; case EXCEPTION_INT_OVERFLOW: dbg_printf("overflow"); break; case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: dbg_printf("array bounds"); break; case EXCEPTION_ILLEGAL_INSTRUCTION: dbg_printf("illegal instruction"); break; case EXCEPTION_STACK_OVERFLOW: dbg_printf("stack overflow"); break; case EXCEPTION_PRIV_INSTRUCTION: dbg_printf("privileged instruction"); break; case EXCEPTION_ACCESS_VIOLATION: if (rec->NumberParameters == 2) dbg_printf("page fault on %s access to 0x%08lx", rec->ExceptionInformation[0] ? "write" : "read", rec->ExceptionInformation[1]); else dbg_printf("page fault"); break; case EXCEPTION_DATATYPE_MISALIGNMENT: dbg_printf("Alignment"); break; case DBG_CONTROL_C: dbg_printf("^C"); break; case CONTROL_C_EXIT: dbg_printf("^C"); break; case STATUS_POSSIBLE_DEADLOCK: { ADDRESS addr; addr.Mode = AddrModeFlat; addr.Offset = rec->ExceptionInformation[0]; dbg_printf("wait failed on critical section "); print_address(&addr, FALSE); } if (!DBG_IVAR(BreakOnCritSectTimeOut)) { dbg_printf("\n"); return DBG_EXCEPTION_NOT_HANDLED; } break; case EXCEPTION_WINE_STUB: { char dll[32], name[64]; memory_get_string(dbg_curr_process->handle, (void*)rec->ExceptionInformation[0], TRUE, FALSE, dll, sizeof(dll)); memory_get_string(dbg_curr_process->handle, (void*)rec->ExceptionInformation[1], TRUE, FALSE, name, sizeof(name)); dbg_printf("unimplemented function %s.%s called", dll, name); } break; case EXCEPTION_WINE_ASSERTION: dbg_printf("assertion failed"); break; case EXCEPTION_VM86_INTx: dbg_printf("interrupt %02lx in vm86 mode", rec->ExceptionInformation[0]); break; case EXCEPTION_VM86_STI: dbg_printf("sti in vm86 mode"); break; case EXCEPTION_VM86_PICRETURN: dbg_printf("PIC return in vm86 mode"); break; case EXCEPTION_FLT_DENORMAL_OPERAND: dbg_printf("denormal float operand"); break; case EXCEPTION_FLT_DIVIDE_BY_ZERO: dbg_printf("divide by zero"); break; case EXCEPTION_FLT_INEXACT_RESULT: dbg_printf("inexact float result"); break; case EXCEPTION_FLT_INVALID_OPERATION: dbg_printf("invalid float operation"); break; case EXCEPTION_FLT_OVERFLOW: dbg_printf("floating pointer overflow"); break; case EXCEPTION_FLT_UNDERFLOW: dbg_printf("floating pointer underflow"); break; case EXCEPTION_FLT_STACK_CHECK: dbg_printf("floating point stack check"); break; default: dbg_printf("0x%08lx", rec->ExceptionCode); break; } } if (dbg_action_mode == automatic_mode) { dbg_exception_prolog(is_debug, rec->ExceptionCode); dbg_exception_epilog(); return 0; /* terminate execution */ } if (dbg_exception_prolog(is_debug, rec->ExceptionCode)) { dbg_interactiveP = TRUE; return 0; } dbg_exception_epilog(); return DBG_CONTINUE; } static unsigned dbg_handle_debug_event(DEBUG_EVENT* de) { char buffer[256]; DWORD cont = DBG_CONTINUE; dbg_curr_pid = de->dwProcessId; dbg_curr_tid = de->dwThreadId; if ((dbg_curr_process = dbg_get_process(de->dwProcessId)) != NULL) dbg_curr_thread = dbg_get_thread(dbg_curr_process, de->dwThreadId); else dbg_curr_thread = NULL; switch (de->dwDebugEventCode) { case EXCEPTION_DEBUG_EVENT: if (!dbg_curr_thread) { WINE_ERR("%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n", de->dwProcessId, de->dwThreadId); break; } WINE_TRACE("%08lx:%08lx: exception code=%08lx\n", de->dwProcessId, de->dwThreadId, de->u.Exception.ExceptionRecord.ExceptionCode); if (dbg_curr_process->continue_on_first_exception) { dbg_curr_process->continue_on_first_exception = FALSE; if (!DBG_IVAR(BreakOnAttach)) break; } if (dbg_fetch_context()) { cont = dbg_handle_exception(&de->u.Exception.ExceptionRecord, de->u.Exception.dwFirstChance); if (cont && dbg_curr_thread) { SetThreadContext(dbg_curr_thread->handle, &dbg_context); } } break; case CREATE_PROCESS_DEBUG_EVENT: memory_get_string_indirect(de->u.CreateProcessInfo.hProcess, de->u.CreateProcessInfo.lpImageName, de->u.CreateProcessInfo.fUnicode, buffer, sizeof(buffer)); WINE_TRACE("%08lx:%08lx: create process '%s'/%p @%08lx (%ld<%ld>)\n", de->dwProcessId, de->dwThreadId, buffer, de->u.CreateProcessInfo.lpImageName, (unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress, de->u.CreateProcessInfo.dwDebugInfoFileOffset, de->u.CreateProcessInfo.nDebugInfoSize); dbg_curr_process = dbg_add_process(de->dwProcessId, de->u.CreateProcessInfo.hProcess, buffer[0] ? buffer : ""); if (dbg_curr_process == NULL) { WINE_ERR("Couldn't create process\n"); break; } if (!SymInitialize(dbg_curr_process->handle, NULL, TRUE)) dbg_printf("Couldn't initiate DbgHelp\n"); WINE_TRACE("%08lx:%08lx: create thread I @%08lx\n", de->dwProcessId, de->dwThreadId, (unsigned long)(void*)de->u.CreateProcessInfo.lpStartAddress); dbg_curr_thread = dbg_add_thread(dbg_curr_process, de->dwThreadId, de->u.CreateProcessInfo.hThread, de->u.CreateProcessInfo.lpThreadLocalBase); if (!dbg_curr_thread) { WINE_ERR("Couldn't create thread\n"); break; } dbg_init_current_process(); dbg_init_current_thread(de->u.CreateProcessInfo.lpStartAddress); break; case EXIT_PROCESS_DEBUG_EVENT: WINE_TRACE("%08lx:%08lx: exit process (%ld)\n", de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode); if (dbg_curr_process == NULL) { WINE_ERR("Unknown process\n"); break; } if (!SymCleanup(dbg_curr_process->handle)) dbg_printf("Couldn't initiate DbgHelp\n"); /* just in case */ break_set_xpoints(FALSE); /* kill last thread */ dbg_del_thread(dbg_curr_process->threads); dbg_del_process(dbg_curr_process); dbg_printf("Process of pid=0x%08lx has terminated\n", dbg_curr_pid); break; case CREATE_THREAD_DEBUG_EVENT: WINE_TRACE("%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId, (unsigned long)(void*)de->u.CreateThread.lpStartAddress); if (dbg_curr_process == NULL) { WINE_ERR("Unknown process\n"); break; } if (dbg_get_thread(dbg_curr_process, de->dwThreadId) != NULL) { WINE_TRACE("Thread already listed, skipping\n"); break; } dbg_curr_thread = dbg_add_thread(dbg_curr_process, de->dwThreadId, de->u.CreateThread.hThread, de->u.CreateThread.lpThreadLocalBase); if (!dbg_curr_thread) { WINE_ERR("Couldn't create thread\n"); break; } dbg_init_current_thread(de->u.CreateThread.lpStartAddress); break; case EXIT_THREAD_DEBUG_EVENT: WINE_TRACE("%08lx:%08lx: exit thread (%ld)\n", de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode); if (dbg_curr_thread == NULL) { WINE_ERR("Unknown thread\n"); break; } /* FIXME: remove break point set on thread startup */ dbg_del_thread(dbg_curr_thread); break; case LOAD_DLL_DEBUG_EVENT: if (dbg_curr_thread == NULL) { WINE_ERR("Unknown thread\n"); break; } memory_get_string_indirect(dbg_curr_process->handle, de->u.LoadDll.lpImageName, de->u.LoadDll.fUnicode, buffer, sizeof(buffer)); WINE_TRACE("%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n", de->dwProcessId, de->dwThreadId, buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll, de->u.LoadDll.dwDebugInfoFileOffset, de->u.LoadDll.nDebugInfoSize); _strupr(buffer); SymLoadModule(dbg_curr_process->handle, de->u.LoadDll.hFile, buffer, NULL, (unsigned long)de->u.LoadDll.lpBaseOfDll, 0); break_set_xpoints(FALSE); break_check_delayed_bp(); break_set_xpoints(TRUE); if (DBG_IVAR(BreakOnDllLoad)) { dbg_printf("Stopping on DLL %s loading at 0x%08lx\n", buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll); if (dbg_fetch_context()) cont = 0; } break; case UNLOAD_DLL_DEBUG_EVENT: WINE_TRACE("%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId, (unsigned long)de->u.UnloadDll.lpBaseOfDll); break_delete_xpoints_from_module((unsigned long)de->u.UnloadDll.lpBaseOfDll); SymUnloadModule(dbg_curr_process->handle, (unsigned long)de->u.UnloadDll.lpBaseOfDll); break; case OUTPUT_DEBUG_STRING_EVENT: if (dbg_curr_thread == NULL) { WINE_ERR("Unknown thread\n"); break; } memory_get_string(dbg_curr_process->handle, de->u.DebugString.lpDebugStringData, TRUE, de->u.DebugString.fUnicode, buffer, sizeof(buffer)); WINE_TRACE("%08lx:%08lx: output debug string (%s)\n", de->dwProcessId, de->dwThreadId, buffer); break; case RIP_EVENT: WINE_TRACE("%08lx:%08lx: rip error=%ld type=%ld\n", de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError, de->u.RipInfo.dwType); break; default: WINE_TRACE("%08lx:%08lx: unknown event (%ld)\n", de->dwProcessId, de->dwThreadId, de->dwDebugEventCode); } if (!cont) return TRUE; /* stop execution */ ContinueDebugEvent(de->dwProcessId, de->dwThreadId, cont); return FALSE; /* continue execution */ } static void dbg_resume_debuggee(DWORD cont) { if (dbg_in_exception) { ADDRESS addr; dbg_exception_epilog(); memory_get_current_pc(&addr); WINE_TRACE("Exiting debugger PC=0x%lx mode=%d count=%d\n", addr.Offset, dbg_curr_thread->exec_mode, dbg_curr_thread->exec_count); if (dbg_curr_thread) { if (!SetThreadContext(dbg_curr_thread->handle, &dbg_context)) dbg_printf("Cannot set ctx on %lu\n", dbg_curr_tid); } } dbg_interactiveP = FALSE; if (!ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, cont)) dbg_printf("Cannot continue on %lu (%lu)\n", dbg_curr_tid, cont); } void dbg_wait_next_exception(DWORD cont, int count, int mode) { DEBUG_EVENT de; ADDRESS addr; if (cont == DBG_CONTINUE) { dbg_curr_thread->exec_count = count; dbg_curr_thread->exec_mode = mode; } dbg_resume_debuggee(cont); while (dbg_curr_process && WaitForDebugEvent(&de, INFINITE)) { if (dbg_handle_debug_event(&de)) break; } if (!dbg_curr_process) return; dbg_interactiveP = TRUE; memory_get_current_pc(&addr); WINE_TRACE("Entering debugger PC=0x%lx mode=%d count=%d\n", addr.Offset, dbg_curr_thread->exec_mode, dbg_curr_thread->exec_count); } static unsigned dbg_main_loop(void) { DEBUG_EVENT de; if (dbg_curr_process) dbg_printf("WineDbg starting on pid 0x%lx\n", dbg_curr_pid); /* wait for first exception */ while (WaitForDebugEvent(&de, INFINITE)) { if (dbg_handle_debug_event(&de)) break; } switch (dbg_action_mode) { case automatic_mode: /* print some extra information */ dbg_printf("Modules:\n"); info_win32_module(0); /* print all modules */ dbg_printf("Threads:\n"); info_win32_threads(); break; default: dbg_interactiveP = TRUE; parser(NULL); } dbg_printf("WineDbg terminated on pid 0x%lx\n", dbg_curr_pid); return 0; } static unsigned dbg_start_debuggee(LPSTR cmdLine) { PROCESS_INFORMATION info; STARTUPINFOA startup; memset(&startup, 0, sizeof(startup)); startup.cb = sizeof(startup); startup.dwFlags = STARTF_USESHOWWINDOW; startup.wShowWindow = SW_SHOWNORMAL; /* FIXME: shouldn't need the CREATE_NEW_CONSOLE, but as usual CUI:s need it * while GUI:s don't */ if (!CreateProcess(NULL, cmdLine, NULL, NULL, FALSE, DEBUG_PROCESS|DEBUG_ONLY_THIS_PROCESS|CREATE_NEW_CONSOLE, NULL, NULL, &startup, &info)) { dbg_printf("Couldn't start process '%s'\n", cmdLine); return FALSE; } if (!info.dwProcessId) { /* this happens when the program being run is not a Wine binary * (for example, a shell wrapper around a WineLib app) */ /* Current fix: list running processes and let the user attach * to one of them (sic) * FIXME: implement a real fix => grab the process (from the * running processes) from its name */ dbg_printf("Debuggee has been started (%s)\n" "But WineDbg isn't attached to it. Maybe you're trying to debug a winelib wrapper ??\n" "Try to attach to one of those processes:\n", cmdLine); /* FIXME: (HACK) we need some time before the wrapper executes the winelib app */ Sleep(100); info_win32_processes(); return TRUE; } dbg_curr_pid = info.dwProcessId; if (!(dbg_curr_process = dbg_add_process(dbg_curr_pid, 0, NULL))) return FALSE; return TRUE; } void dbg_run_debuggee(const char* args) { if (args) { WINE_FIXME("Re-running current program with %s as args is broken\n", args); return; } else { DEBUG_EVENT de; if (!dbg_last_cmd_line) { dbg_printf("Cannot find previously used command line.\n"); return; } dbg_start_debuggee(dbg_last_cmd_line); while (dbg_curr_process && WaitForDebugEvent(&de, INFINITE)) { if (dbg_handle_debug_event(&de)) break; } source_list_from_addr(NULL, 0); } } BOOL dbg_interrupt_debuggee(void) { if (!dbg_process_list) return FALSE; /* FIXME: since we likely have a single process, signal the first process * in list */ if (dbg_process_list->next) dbg_printf("Ctrl-C: only stopping the first process\n"); else dbg_printf("Ctrl-C: stopping debuggee\n"); dbg_process_list->continue_on_first_exception = FALSE; return DebugBreakProcess(dbg_process_list->handle); } static BOOL WINAPI ctrl_c_handler(DWORD dwCtrlType) { if (dwCtrlType == CTRL_C_EVENT) { return dbg_interrupt_debuggee(); } return FALSE; } static void dbg_init_console(void) { /* set our control-C handler */ SetConsoleCtrlHandler(ctrl_c_handler, TRUE); /* set our own title */ SetConsoleTitle("Wine Debugger"); } static int dbg_winedbg_usage(void) { dbg_printf("Usage: winedbg [--auto] [--gdb] cmdline\n"); return 1; } struct backend_cpu* be_cpu; #ifdef __i386__ extern struct backend_cpu be_i386; #elif __powerpc__ extern struct backend_cpu be_ppc; #elif __ALPHA__ extern struct backend_cpu be_alpha; #else # error CPU unknown #endif int main(int argc, char** argv) { DWORD retv = 0; unsigned gdb_flags = 0; #ifdef __i386__ be_cpu = &be_i386; #elif __powerpc__ be_cpu = &be_ppc; #elif __ALPHA__ be_cpu = &be_alpha; #else # error CPU unknown #endif /* Initialize the output */ dbg_houtput = GetStdHandle(STD_OUTPUT_HANDLE); /* Initialize internal vars */ if (!dbg_load_internal_vars()) return -1; /* parse options */ while (argc > 1 && argv[1][0] == '-') { if (!strcmp(argv[1], "--command")) { argc--; argv++; arg_command = HeapAlloc(GetProcessHeap(), 0, strlen(argv[1])+2); strcpy(arg_command, argv[1]); strcat(arg_command, "\n"); argc--; argv++; continue; } if (!strcmp(argv[1], "--auto")) { if (dbg_action_mode != none_mode) return dbg_winedbg_usage(); dbg_action_mode = automatic_mode; /* force some internal variables */ DBG_IVAR(BreakOnDllLoad) = 0; argc--; argv++; dbg_houtput = GetStdHandle(STD_ERROR_HANDLE); continue; } if (!strcmp(argv[1], "--gdb")) { if (dbg_action_mode != none_mode) return dbg_winedbg_usage(); dbg_action_mode = gdb_mode; argc--; argv++; continue; } if (strcmp(argv[1], "--no-start") == 0 && dbg_action_mode == gdb_mode) { gdb_flags |= 1; argc--; argv++; /* as we don't use argv[0] */ continue; } if (strcmp(argv[1], "--with-xterm") == 0 && dbg_action_mode == gdb_mode) { gdb_flags |= 2; argc--; argv++; /* as we don't use argv[0] */ continue; } return dbg_winedbg_usage(); } if (dbg_action_mode == none_mode) dbg_action_mode = winedbg_mode; /* try the form pid */ if (dbg_curr_pid == 0 && argc == 2) { char* ptr; dbg_curr_pid = strtol(argv[1], &ptr, 10); if (dbg_curr_pid == 0 || ptr != argv[1] + strlen(argv[1]) || !dbg_attach_debuggee(dbg_curr_pid, dbg_action_mode != gdb_mode, FALSE)) dbg_curr_pid = 0; } /* try the form pid evt (Win32 JIT debugger) */ if (dbg_curr_pid == 0 && argc == 3) { HANDLE hEvent; DWORD pid; char* ptr; if ((pid = strtol(argv[1], &ptr, 10)) != 0 && ptr != NULL && (hEvent = (HANDLE)strtol(argv[2], &ptr, 10)) != 0 && ptr != NULL) { if (!dbg_attach_debuggee(pid, TRUE, FALSE)) { /* don't care about result */ SetEvent(hEvent); goto leave; } if (!SetEvent(hEvent)) { WINE_ERR("Invalid event handle: %p\n", hEvent); goto leave; } CloseHandle(hEvent); dbg_curr_pid = pid; } } if (dbg_curr_pid == 0 && argc > 1) { int i, len; LPSTR cmdLine; if (!(cmdLine = HeapAlloc(GetProcessHeap(), 0, len = 1))) goto oom_leave; cmdLine[0] = '\0'; for (i = 1; i < argc; i++) { len += strlen(argv[i]) + 1; if (!(cmdLine = HeapReAlloc(GetProcessHeap(), 0, cmdLine, len))) goto oom_leave; strcat(cmdLine, argv[i]); cmdLine[len - 2] = ' '; cmdLine[len - 1] = '\0'; } if (!dbg_start_debuggee(cmdLine)) { dbg_printf("Couldn't start process '%s'\n", cmdLine); goto leave; } dbg_last_cmd_line = cmdLine; } /* don't save local vars in gdb mode */ if (dbg_action_mode == gdb_mode && dbg_curr_pid) return gdb_remote(gdb_flags); dbg_init_console(); SymSetOptions(SymGetOptions() | SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS | SYMOPT_AUTO_PUBLICS); retv = dbg_main_loop(); /* don't save modified variables in auto mode */ if (dbg_action_mode != automatic_mode) dbg_save_internal_vars(); leave: return retv; oom_leave: dbg_printf("Out of memory\n"); return retv; }