mirror of
https://github.com/reactos/wine.git
synced 2024-11-28 14:10:32 +00:00
e5efa0ceb6
Centralized output handling (preparation for console usage). Fixed a few debug information reading options (stabs and sym). Started a framework to hold debugger's internal variables.
598 lines
17 KiB
C
598 lines
17 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 <string.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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#ifdef DBG_need_heap
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HANDLE dbg_heap = 0;
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#endif
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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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/* build internal vars table */
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#define INTERNAL_VAR(_var,_val) int DBG_IVAR(_var) = _val;
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#include "intvar.h"
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#undef INTERNAL_VAR
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int DEBUG_Printf(int chn, const char* format, ...)
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{
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char buf[1024];
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va_list valist;
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va_start(valist, format);
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vsprintf(buf, format, valist);
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va_end(valist);
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#if 0
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if (DBG_IVAR(ChannelMask) & chn)
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WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, strlen(buf), NULL, NULL);
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if (chn == DBG_CHN_MESG) fwrite(buf, strlen(buf), 1, stderr);
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#else
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if (DBG_IVAR(ChannelMask) & chn) fwrite(buf, strlen(buf), 1, stderr);
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#endif
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return strlen(buf);
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}
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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 (!RegOpenKey(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) {
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#define INTERNAL_VAR(_var,_val) \
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if (!RegQueryValueEx(hkey, #_var, 0, &type, (LPSTR)&val, &count)) \
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DBG_IVAR(_var) = val;
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#include "intvar.h"
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#undef INTERNAL_VAR
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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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DEBUG_Printf(DBG_CHN_MESG, "\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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DEBUG_Printf(DBG_CHN_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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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 (DEBUG_CurrThread->start) {
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if (DEBUG_CurrThread->process->num_threads == 1 ||
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DBG_IVAR(BreakAllThreadsStartup)) {
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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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/* FIXME: need for a configuration var ? */
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/* pass to app first ??? */
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/* if (first_chance && !force) return 0; */
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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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}
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if (!is_debug)
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{
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/* print some infos */
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DEBUG_Printf( DBG_CHN_MESG, "%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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DEBUG_Printf( DBG_CHN_MESG, "divide by zero" );
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break;
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case EXCEPTION_INT_OVERFLOW:
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DEBUG_Printf( DBG_CHN_MESG, "overflow" );
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break;
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case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
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DEBUG_Printf( DBG_CHN_MESG, "array bounds " );
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break;
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case EXCEPTION_ILLEGAL_INSTRUCTION:
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DEBUG_Printf( DBG_CHN_MESG, "illegal instruction" );
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break;
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case EXCEPTION_STACK_OVERFLOW:
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DEBUG_Printf( DBG_CHN_MESG, "stack overflow" );
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break;
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case EXCEPTION_PRIV_INSTRUCTION:
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DEBUG_Printf( DBG_CHN_MESG, "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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DEBUG_Printf( DBG_CHN_MESG, "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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DEBUG_Printf( DBG_CHN_MESG, "page fault" );
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break;
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case EXCEPTION_DATATYPE_MISALIGNMENT:
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DEBUG_Printf( DBG_CHN_MESG, "Alignment" );
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break;
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case CONTROL_C_EXIT:
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DEBUG_Printf( DBG_CHN_MESG, "^C" );
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break;
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case EXCEPTION_CRITICAL_SECTION_WAIT:
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DEBUG_Printf( DBG_CHN_MESG, "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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DEBUG_Printf( DBG_CHN_MESG, "%08lx", rec->ExceptionCode );
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break;
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}
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}
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DEBUG_Printf(DBG_CHN_TRACE,
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"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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ret = DEBUG_Main( is_debug, force, rec->ExceptionCode );
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DEBUG_Printf(DBG_CHN_TRACE,
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"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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return ret;
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}
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static BOOL DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
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{
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char buffer[256];
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BOOL ret;
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__TRY {
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ret = TRUE;
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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) {
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DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
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de->dwProcessId, de->dwThreadId);
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break;
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}
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
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break;
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}
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DEBUG_Printf(DBG_CHN_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->dbg_exec_mode == EXEC_KILL) {
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ret = FALSE;
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} else {
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DEBUG_CurrThread->wait_for_first_exception = 0;
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SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
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}
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break;
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case CREATE_THREAD_DEBUG_EVENT:
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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.CreateProcessInfo.lpImageName);
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/* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
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DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%p (%ld<%ld>)\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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de->u.CreateProcessInfo.dwDebugInfoFileOffset,
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de->u.CreateProcessInfo.nDebugInfoSize);
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if (DEBUG_GetProcess(de->dwProcessId) != NULL) {
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
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break;
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}
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DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%p\n",
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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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DEBUG_Printf(DBG_CHN_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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/* so far, process name is not set */
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DEBUG_LoadModule32("<Debugged process>", de->u.CreateProcessInfo.hFile,
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(DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
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break;
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case EXIT_THREAD_DEBUG_EVENT:
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
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break;
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}
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/* just in case */
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DEBUG_SetBreakpoints(FALSE);
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/* kill last thread */
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DEBUG_DelThread(DEBUG_CurrProcess->threads);
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DEBUG_DelProcess(DEBUG_CurrProcess);
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ret = FALSE;
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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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%p (%ld<%ld>)\n",
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de->dwProcessId, de->dwThreadId,
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buffer, de->u.LoadDll.lpBaseOfDll,
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de->u.LoadDll.dwDebugInfoFileOffset,
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de->u.LoadDll.nDebugInfoSize);
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CharUpper(buffer);
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DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
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break;
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case UNLOAD_DLL_DEBUG_EVENT:
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
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de->dwProcessId, de->dwThreadId, buffer);
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break;
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case RIP_EVENT:
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DEBUG_Printf(DBG_CHN_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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DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
|
|
de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
|
|
}
|
|
|
|
} __EXCEPT(wine_dbg) {
|
|
*cont = 0;
|
|
ret = TRUE;
|
|
}
|
|
__ENDTRY;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static DWORD CALLBACK DEBUG_MainLoop(DWORD pid)
|
|
{
|
|
DEBUG_EVENT de;
|
|
DWORD cont;
|
|
BOOL ret = TRUE;
|
|
|
|
DEBUG_Printf(DBG_CHN_MESG, " on pid %ld\n", pid);
|
|
|
|
DEBUG_Init();
|
|
|
|
while (ret && WaitForDebugEvent(&de, INFINITE)) {
|
|
ret = DEBUG_HandleDebugEvent(&de, &cont);
|
|
ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
|
|
}
|
|
|
|
DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %ld\n", pid);
|
|
|
|
ExitProcess(0);
|
|
}
|
|
|
|
int PASCAL WinMain(HINSTANCE hInst, HINSTANCE prev, LPSTR _cmdline, int show)
|
|
{
|
|
char* argv[5];
|
|
char* cmdline = strdup(_cmdline);
|
|
char* ptr = cmdline;
|
|
int instr = FALSE;
|
|
int argc = 0;
|
|
|
|
while ((*ptr == ' ' || *ptr == '\t') && *ptr != 0) ptr++;
|
|
argv[argc++] = ptr;
|
|
for (; *ptr; ptr++) {
|
|
if ((*ptr == ' ' || *ptr == '\t') && !instr) {
|
|
*ptr++ = 0;
|
|
while (*ptr == ' ' || *ptr == '\t') ptr++;
|
|
if (*ptr) argv[argc++] = ptr;
|
|
if (argc >= sizeof(argv) / sizeof(argv[0])) return 0;
|
|
} else if (*ptr == '"') {
|
|
instr = !instr;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
/* would require to change .spec with a cuiexe type */
|
|
/* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
|
|
* stdout and stderr streams
|
|
*/
|
|
if (1 /*DBG_IVAR(UseXterm)*/) {
|
|
COORD pos;
|
|
|
|
/* This is a hack: it forces creation of an xterm, not done by default */
|
|
pos.x = 0; pos.y = 1;
|
|
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
|
|
}
|
|
#endif
|
|
|
|
DEBUG_Printf(DBG_CHN_MESG, "Starting WineDbg... ");
|
|
if (argc == 2) {
|
|
DWORD pid = atoi(argv[0]);
|
|
HANDLE hEvent = atoi(argv[1]);
|
|
|
|
if (pid != 0 && hEvent != 0) {
|
|
free(cmdline);
|
|
|
|
if (!DebugActiveProcess(pid)) {
|
|
DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
|
|
pid, GetLastError());
|
|
return 0;
|
|
}
|
|
SetEvent(hEvent);
|
|
return DEBUG_MainLoop(pid);
|
|
}
|
|
}
|
|
do {
|
|
PROCESS_INFORMATION info;
|
|
STARTUPINFOA startup;
|
|
|
|
free(cmdline);
|
|
|
|
memset(&startup, 0, sizeof(startup));
|
|
startup.cb = sizeof(startup);
|
|
startup.dwFlags = STARTF_USESHOWWINDOW;
|
|
startup.wShowWindow = SW_SHOWNORMAL;
|
|
|
|
if (CreateProcess(NULL, _cmdline, NULL, NULL,
|
|
FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
|
|
return DEBUG_MainLoop(info.dwProcessId);
|
|
}
|
|
DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", _cmdline);
|
|
} while (0);
|
|
return 0;
|
|
}
|
|
|