mirror of
https://github.com/reactos/wine.git
synced 2024-11-30 15:10:27 +00:00
ac11a68f3e
merged all module handling code in new module.c file reenabled 'walk module' and 'info module' commands added ability to drive break on thread startup
599 lines
16 KiB
C
599 lines
16 KiB
C
/* -*- tab-width: 8; c-basic-offset: 4 -*- */
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/* Wine internal debugger
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* Interface to Windows debugger API
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* Eric Pouech (c) 2000
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include "debugger.h"
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#include "thread.h"
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#include "process.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winreg.h"
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#include "debugtools.h"
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#include "options.h"
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#ifdef DBG_need_heap
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HANDLE dbg_heap = 0;
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#endif
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DEFAULT_DEBUG_CHANNEL(winedbg);
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DBG_PROCESS* DEBUG_CurrProcess = NULL;
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DBG_THREAD* DEBUG_CurrThread = NULL;
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CONTEXT DEBUG_context;
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static DBG_PROCESS* proc = NULL;
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static BOOL bBreakAllThreads = FALSE;
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static BOOL DEBUG_Init(void)
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{
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HKEY hkey;
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DWORD type;
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DWORD val;
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DWORD count = sizeof(val);
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if (!RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) {
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if (!RegQueryValueExA(hkey, "BreakAllThreadsStartup", 0, &type, (LPSTR)&val, &count)) {
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bBreakAllThreads = val;
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}
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RegCloseKey(hkey);
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}
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return TRUE;
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}
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static WINE_EXCEPTION_FILTER(wine_dbg)
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{
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DEBUG_ExternalDebugger();
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fprintf(stderr, "\nwine_dbg: Exception %lx\n", GetExceptionCode());
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return EXCEPTION_EXECUTE_HANDLER;
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}
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static DBG_PROCESS* DEBUG_GetProcess(DWORD pid)
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{
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DBG_PROCESS* p;
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for (p = proc; p; p = p->next)
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if (p->pid == pid) break;
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return p;
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}
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static DBG_PROCESS* DEBUG_AddProcess(DWORD pid, HANDLE h)
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{
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DBG_PROCESS* p = DBG_alloc(sizeof(DBG_PROCESS));
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if (!p)
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return NULL;
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p->handle = h;
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p->pid = pid;
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p->threads = NULL;
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p->num_threads = 0;
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p->modules = NULL;
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p->next_index = 0;
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p->next = proc;
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p->prev = NULL;
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if (proc) proc->prev = p;
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proc = p;
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return p;
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}
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static void DEBUG_DelThread(DBG_THREAD* p);
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static void DEBUG_DelProcess(DBG_PROCESS* p)
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{
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if (p->threads != NULL) {
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ERR("Shouldn't happen\n");
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while (p->threads) DEBUG_DelThread(p->threads);
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}
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if (p->prev) p->prev->next = p->next;
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if (p->next) p->next->prev = p->prev;
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if (p == proc) proc = p->next;
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DBG_free(p);
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}
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static void DEBUG_InitCurrProcess(void)
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{
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#ifdef DBG_need_heap
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/*
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* Initialize the debugger heap.
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*/
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dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
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#endif
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/*
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* Initialize the type handling stuff.
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*/
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DEBUG_InitTypes();
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DEBUG_InitCVDataTypes();
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/*
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* In some cases we can read the stabs information directly
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* from the executable. If this is the case, we don't need
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* to bother with trying to read a symbol file, as the stabs
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* also have line number and local variable information.
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* As long as gcc is used for the compiler, stabs will
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* be the default. On SVr4, DWARF could be used, but we
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* don't grok that yet, and in this case we fall back to using
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* the wine.sym file.
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*/
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if( DEBUG_ReadExecutableDbgInfo() == FALSE )
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{
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char* symfilename = "wine.sym";
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struct stat statbuf;
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HKEY hWineConf, hkey;
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DWORD count;
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char symbolTableFile[256];
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if (-1 == stat(symfilename, &statbuf) )
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symfilename = LIBDIR "wine.sym";
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strcpy(symbolTableFile, symfilename);
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if (!RegOpenKeyA(HKEY_LOCAL_MACHINE, "Software\\Wine\\Wine\\Config", &hWineConf)) {
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if (!RegOpenKeyA(hWineConf, "wine", &hkey)) {
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count = sizeof(symbolTableFile);
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RegQueryValueA(hkey, "SymbolTableFile", symbolTableFile, &count);
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RegCloseKey(hkey);
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}
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RegCloseKey(hWineConf);
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}
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DEBUG_ReadSymbolTable(symbolTableFile);
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}
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DEBUG_LoadEntryPoints(NULL);
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DEBUG_ProcessDeferredDebug();
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}
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static BOOL DEBUG_ProcessGetString(char* buffer, int size, HANDLE hp, LPSTR addr)
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{
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DWORD sz;
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*(WCHAR*)buffer = 0;
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return (addr && ReadProcessMemory(hp, addr, buffer, size, &sz));
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}
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static BOOL DEBUG_ProcessGetStringIndirect(char* buffer, int size, HANDLE hp, LPVOID addr)
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{
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LPVOID ad;
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DWORD sz;
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if ( addr
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&& ReadProcessMemory(hp, addr, &ad, sizeof(ad), &sz)
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&& sz == sizeof(ad)
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&& ad
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&& ReadProcessMemory(hp, ad, buffer, size, &sz))
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return TRUE;
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*(WCHAR*)buffer = 0;
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return FALSE;
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}
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static DBG_THREAD* DEBUG_GetThread(DBG_PROCESS* p, DWORD tid)
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{
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DBG_THREAD* t;
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for (t = p->threads; t; t = t->next)
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if (t->tid == tid) break;
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return t;
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}
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static DBG_THREAD* DEBUG_AddThread(DBG_PROCESS* p, DWORD tid,
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HANDLE h, LPVOID start, LPVOID teb)
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{
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DBG_THREAD* t = DBG_alloc(sizeof(DBG_THREAD));
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if (!t)
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return NULL;
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t->handle = h;
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t->tid = tid;
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t->start = start;
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t->teb = teb;
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t->process = p;
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t->wait_for_first_exception = 0;
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t->dbg_exec_mode = EXEC_CONT;
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t->dbg_exec_count = 0;
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p->num_threads++;
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t->next = p->threads;
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t->prev = NULL;
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if (p->threads) p->threads->prev = t;
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p->threads = t;
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return t;
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}
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static void DEBUG_InitCurrThread(void)
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{
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if (!Options.debug) return;
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if (DEBUG_CurrThread->start) {
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if (DEBUG_CurrThread->process->num_threads == 1 || bBreakAllThreads) {
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DBG_VALUE value;
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DEBUG_SetBreakpoints(FALSE);
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value.type = NULL;
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value.cookie = DV_TARGET;
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value.addr.seg = 0;
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value.addr.off = (DWORD)DEBUG_CurrThread->start;
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DEBUG_AddBreakpoint(&value);
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DEBUG_SetBreakpoints(TRUE);
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}
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} else {
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DEBUG_CurrThread->wait_for_first_exception = 1;
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}
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}
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static void DEBUG_DelThread(DBG_THREAD* t)
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{
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if (t->prev) t->prev->next = t->next;
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if (t->next) t->next->prev = t->prev;
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if (t == t->process->threads) t->process->threads = t->next;
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t->process->num_threads--;
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DBG_free(t);
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}
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static BOOL DEBUG_HandleException( EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force )
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{
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BOOL is_debug = FALSE;
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BOOL ret;
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if (first_chance && !Options.debug && !force ) return 0; /* pass to app first */
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switch (rec->ExceptionCode)
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{
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case EXCEPTION_BREAKPOINT:
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case EXCEPTION_SINGLE_STEP:
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is_debug = TRUE;
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break;
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case CONTROL_C_EXIT:
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if (!Options.debug) DEBUG_Exit(0);
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break;
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}
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if (!is_debug)
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{
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/* print some infos */
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fprintf( stderr, "%s: ",
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first_chance ? "First chance exception" : "Unhandled exception" );
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switch(rec->ExceptionCode)
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{
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case EXCEPTION_INT_DIVIDE_BY_ZERO:
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fprintf( stderr, "divide by zero" );
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break;
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case EXCEPTION_INT_OVERFLOW:
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fprintf( stderr, "overflow" );
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break;
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case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
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fprintf( stderr, "array bounds " );
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break;
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case EXCEPTION_ILLEGAL_INSTRUCTION:
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fprintf( stderr, "illegal instruction" );
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break;
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case EXCEPTION_STACK_OVERFLOW:
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fprintf( stderr, "stack overflow" );
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break;
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case EXCEPTION_PRIV_INSTRUCTION:
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fprintf( stderr, "priviledged instruction" );
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break;
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case EXCEPTION_ACCESS_VIOLATION:
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if (rec->NumberParameters == 2)
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fprintf( stderr, "page fault on %s access to 0x%08lx",
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rec->ExceptionInformation[0] ? "write" : "read",
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rec->ExceptionInformation[1] );
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else
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fprintf( stderr, "page fault" );
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break;
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case EXCEPTION_DATATYPE_MISALIGNMENT:
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fprintf( stderr, "Alignment" );
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break;
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case CONTROL_C_EXIT:
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fprintf( stderr, "^C" );
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break;
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case EXCEPTION_CRITICAL_SECTION_WAIT:
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fprintf( stderr, "critical section %08lx wait failed",
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rec->ExceptionInformation[0] );
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break;
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default:
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fprintf( stderr, "%08lx", rec->ExceptionCode );
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break;
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}
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}
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#if 1
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fprintf(stderr, "Entering debugger PC=%lx EFL=%08lx mode=%d count=%d\n",
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DEBUG_context.Eip, DEBUG_context.EFlags,
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DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
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#endif
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ret = DEBUG_Main( is_debug, force, rec->ExceptionCode );
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#if 1
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fprintf(stderr, "Exiting debugger PC=%lx EFL=%08lx mode=%d count=%d\n",
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DEBUG_context.Eip, DEBUG_context.EFlags,
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DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
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#endif
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return ret;
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}
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static DWORD DEBUG_HandleDebugEvent(DEBUG_EVENT* de)
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{
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char buffer[256];
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DWORD cont;
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__TRY {
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cont = 0L;
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if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
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DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
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else
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DEBUG_CurrThread = NULL;
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switch (de->dwDebugEventCode) {
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case EXCEPTION_DEBUG_EVENT:
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if (!DEBUG_CurrThread) break;
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TRACE("%08lx:%08lx: exception code=%08lx %d\n",
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de->dwProcessId, de->dwThreadId,
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de->u.Exception.ExceptionRecord.ExceptionCode,
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DEBUG_CurrThread->wait_for_first_exception);
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DEBUG_context.ContextFlags = CONTEXT_CONTROL|CONTEXT_INTEGER|CONTEXT_SEGMENTS|CONTEXT_DEBUG_REGISTERS;
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if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
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WARN("Can't get thread's context\n");
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break;
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}
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TRACE("%p:%p\n", de->u.Exception.ExceptionRecord.ExceptionAddress,
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(void*)DEBUG_context.Eip);
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cont = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
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de->u.Exception.dwFirstChance,
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DEBUG_CurrThread->wait_for_first_exception);
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if (DEBUG_CurrThread->wait_for_first_exception) {
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DEBUG_CurrThread->wait_for_first_exception = 0;
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#ifdef __i386__
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DEBUG_context.Eip--;
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#endif
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}
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SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
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break;
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case CREATE_THREAD_DEBUG_EVENT:
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TRACE("%08lx:%08lx: create thread D @%p\n", de->dwProcessId, de->dwThreadId,
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de->u.CreateThread.lpStartAddress);
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if (DEBUG_CurrProcess == NULL) {
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ERR("Unknown process\n");
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break;
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}
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if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
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TRACE("Thread already listed, skipping\n");
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break;
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}
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DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
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de->dwThreadId,
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de->u.CreateThread.hThread,
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de->u.CreateThread.lpStartAddress,
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de->u.CreateThread.lpThreadLocalBase);
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if (!DEBUG_CurrThread) {
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ERR("Couldn't create thread\n");
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break;
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}
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DEBUG_InitCurrThread();
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break;
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case CREATE_PROCESS_DEBUG_EVENT:
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DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
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de->u.CreateProcessInfo.hProcess,
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de->u.LoadDll.lpImageName);
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/* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
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TRACE("%08lx:%08lx: create process %s @%p\n",
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de->dwProcessId, de->dwThreadId,
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buffer,
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de->u.CreateProcessInfo.lpStartAddress);
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if (DEBUG_GetProcess(de->dwProcessId) != NULL) {
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TRACE("Skipping already defined process\n");
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break;
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}
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DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
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de->u.CreateProcessInfo.hProcess);
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if (DEBUG_CurrProcess == NULL) {
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ERR("Unknown process\n");
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break;
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}
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TRACE("%08lx:%08lx: create thread I @%p\n", de->dwProcessId, de->dwThreadId,
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de->u.CreateProcessInfo.lpStartAddress);
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DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
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de->dwThreadId,
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de->u.CreateProcessInfo.hThread,
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de->u.CreateProcessInfo.lpStartAddress,
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de->u.CreateProcessInfo.lpThreadLocalBase);
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if (!DEBUG_CurrThread) {
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ERR("Couldn't create thread\n");
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break;
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}
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DEBUG_InitCurrProcess();
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DEBUG_InitCurrThread();
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#ifdef _WE_SUPPORT_THE_STAB_TYPES_USED_BY_MINGW_TOO
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/* so far, process name is not set */
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DEBUG_RegisterDebugInfo((DWORD)de->u.CreateProcessInfo.lpBaseOfImage,
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"wine-exec");
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#endif
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break;
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case EXIT_THREAD_DEBUG_EVENT:
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TRACE("%08lx:%08lx: exit thread (%ld)\n",
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de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
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if (DEBUG_CurrThread == NULL) {
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ERR("Unknown thread\n");
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break;
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}
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/* FIXME: remove break point set on thread startup */
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DEBUG_DelThread(DEBUG_CurrThread);
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break;
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case EXIT_PROCESS_DEBUG_EVENT:
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TRACE("%08lx:%08lx: exit process (%ld)\n",
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de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
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if (DEBUG_CurrProcess == NULL) {
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ERR("Unknown process\n");
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break;
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}
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/* kill last thread */
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DEBUG_DelThread(DEBUG_CurrProcess->threads);
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/* FIXME: remove break point set on thread startup */
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DEBUG_DelProcess(DEBUG_CurrProcess);
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break;
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case LOAD_DLL_DEBUG_EVENT:
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if (DEBUG_CurrThread == NULL) {
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ERR("Unknown thread\n");
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break;
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}
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DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
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DEBUG_CurrThread->process->handle,
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de->u.LoadDll.lpImageName);
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/* FIXME unicode: de->u.LoadDll.fUnicode */
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TRACE("%08lx:%08lx: loads DLL %s @%p\n", de->dwProcessId, de->dwThreadId,
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buffer, de->u.LoadDll.lpBaseOfDll);
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CharUpperA(buffer);
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DEBUG_LoadModule32( buffer, (DWORD)de->u.LoadDll.lpBaseOfDll);
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break;
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case UNLOAD_DLL_DEBUG_EVENT:
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TRACE("%08lx:%08lx: unload DLL @%p\n", de->dwProcessId, de->dwThreadId,
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de->u.UnloadDll.lpBaseOfDll);
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break;
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case OUTPUT_DEBUG_STRING_EVENT:
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if (DEBUG_CurrThread == NULL) {
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ERR("Unknown thread\n");
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break;
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}
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DEBUG_ProcessGetString(buffer, sizeof(buffer),
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DEBUG_CurrThread->process->handle,
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de->u.DebugString.lpDebugStringData);
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/* fixme unicode de->u.DebugString.fUnicode ? */
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TRACE("%08lx:%08lx: output debug string (%s)\n",
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de->dwProcessId, de->dwThreadId,
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buffer);
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break;
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case RIP_EVENT:
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TRACE("%08lx:%08lx: rip error=%ld type=%ld\n",
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de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
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de->u.RipInfo.dwType);
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break;
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default:
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TRACE("%08lx:%08lx: unknown event (%ld)\n",
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de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
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}
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} __EXCEPT(wine_dbg) {
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cont = 0;
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}
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__ENDTRY;
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return cont;
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}
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static DWORD CALLBACK DEBUG_MainLoop(DWORD pid)
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{
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DEBUG_EVENT de;
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DWORD cont;
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DEBUG_Init();
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while (WaitForDebugEvent(&de, INFINITE)) {
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cont = DEBUG_HandleDebugEvent(&de);
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ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
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}
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|
|
TRACE("WineDbg terminated on pid %ld\n", pid);
|
|
|
|
return 0L;
|
|
}
|
|
|
|
static DWORD CALLBACK DEBUG_StarterFromPID(LPVOID pid)
|
|
{
|
|
TRACE("WineDbg started on pid %ld\n", (DWORD)pid);
|
|
|
|
if (!DebugActiveProcess((DWORD)pid)) {
|
|
TRACE("Can't debug process %ld: %ld\n", (DWORD)pid, GetLastError());
|
|
return 0;
|
|
}
|
|
return DEBUG_MainLoop((DWORD)pid);
|
|
}
|
|
|
|
void DEBUG_Attach(DWORD pid)
|
|
{
|
|
CreateThread(NULL, 0, DEBUG_StarterFromPID, (LPVOID)pid, 0, NULL);
|
|
}
|
|
|
|
struct dsfcl {
|
|
HANDLE hEvent;
|
|
LPSTR lpCmdLine;
|
|
int showWindow;
|
|
DWORD error;
|
|
};
|
|
|
|
static DWORD CALLBACK DEBUG_StarterFromCmdLine(LPVOID p)
|
|
{
|
|
PROCESS_INFORMATION info;
|
|
STARTUPINFOA startup;
|
|
BOOL ok = TRUE;
|
|
|
|
memset(&startup, 0, sizeof(startup));
|
|
startup.cb = sizeof(startup);
|
|
startup.dwFlags = STARTF_USESHOWWINDOW;
|
|
startup.wShowWindow = ((struct dsfcl*)p)->showWindow;
|
|
|
|
/* any value >= 32 will do, simulate a correct handle value */
|
|
((struct dsfcl*)p)->error = 0xFFFFFFFF;
|
|
if (!CreateProcessA(NULL, ((struct dsfcl*)p)->lpCmdLine, NULL, NULL,
|
|
FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
|
|
((struct dsfcl*)p)->error = GetLastError();
|
|
ok = FALSE;
|
|
}
|
|
SetEvent(((struct dsfcl*)p)->hEvent);
|
|
if (ok) DEBUG_MainLoop(info.dwProcessId);
|
|
|
|
return 0;
|
|
}
|
|
|
|
DWORD DEBUG_WinExec(LPSTR lpCmdLine, int sw)
|
|
{
|
|
struct dsfcl s;
|
|
BOOL ret;
|
|
|
|
if ((s.hEvent = CreateEventA(NULL, FALSE, FALSE, NULL))) {
|
|
s.lpCmdLine = lpCmdLine;
|
|
s.showWindow = sw;
|
|
if (CreateThread(NULL, 0, DEBUG_StarterFromCmdLine, (LPVOID)&s, 0, NULL)) {
|
|
WaitForSingleObject(s.hEvent, INFINITE);
|
|
ret = s.error;
|
|
} else {
|
|
ret = 3; /* (dummy) error value for non created thread */
|
|
}
|
|
CloseHandle(s.hEvent);
|
|
} else {
|
|
ret = 1; /* (dummy) error value for non created event */
|
|
}
|
|
return ret;
|
|
}
|