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Sweden-Number/programs/winedbg/tgt_active.c

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/*
* Wine debugger - back-end for an active target
*
* Copyright 2000-2006 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "debugger.h"
#include "psapi.h"
#include "resource.h"
#include "winternl.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
static char* dbg_last_cmd_line;
static struct be_process_io be_process_active_io;
static void dbg_init_current_process(void)
{
}
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))
{
ADDRESS64 addr;
break_set_xpoints(FALSE);
addr.Mode = AddrModeFlat;
addr.Offset = (DWORD_PTR)start;
break_add_break(&addr, TRUE, TRUE);
break_set_xpoints(TRUE);
}
}
}
static unsigned dbg_handle_debug_event(DEBUG_EVENT* de);
/******************************************************************
* dbg_attach_debuggee
*
* Sets the debuggee to <pid>
* 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)
{
if (!(dbg_curr_process = dbg_add_process(&be_process_active_io, pid, 0))) return FALSE;
if (!DebugActiveProcess(pid))
{
dbg_printf("Can't attach process %04x: error %u\n", pid, GetLastError());
dbg_del_process(dbg_curr_process);
return FALSE;
}
dbg_curr_process->continue_on_first_exception = cofe;
SetEnvironmentVariableA("DBGHELP_NOLIVE", NULL);
dbg_curr_process->active_debuggee = TRUE;
return TRUE;
}
static unsigned dbg_fetch_context(void)
{
dbg_context.ContextFlags = CONTEXT_CONTROL
| CONTEXT_INTEGER | CONTEXT_FLOATING_POINT
#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;
}
/***********************************************************************
* dbg_exception_prolog
*
* Examine exception and decide if interactive mode is entered(return TRUE)
* or exception is silently continued(return FALSE)
* is_debug means the exception is a breakpoint or single step exception
*/
static unsigned dbg_exception_prolog(BOOL is_debug, BOOL first_chance, const EXCEPTION_RECORD* rec)
{
ADDRESS64 addr;
BOOL is_break;
char hexbuf[MAX_OFFSET_TO_STR_LEN];
memory_get_current_pc(&addr);
break_suspend_execution();
dbg_curr_thread->excpt_record = *rec;
dbg_curr_thread->in_exception = TRUE;
if (!is_debug)
{
switch (addr.Mode)
{
case AddrModeFlat:
dbg_printf(" in 32-bit code (%s)",
memory_offset_to_string(hexbuf, addr.Offset, 0));
break;
case AddrModeReal:
dbg_printf(" in vm86 code (%04x:%04x)", addr.Segment, (unsigned) addr.Offset);
break;
case AddrMode1616:
dbg_printf(" in 16-bit code (%04x:%04x)", addr.Segment, (unsigned) addr.Offset);
break;
case AddrMode1632:
dbg_printf(" in 32-bit code (%04x:%08lx)", addr.Segment, (unsigned long) 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);
if (is_debug) break_adjust_pc(&addr, rec->ExceptionCode, first_chance, &is_break);
/*
* Do a quiet backtrace so that we have an idea of what the situation
* is WRT the source files.
*/
stack_fetch_frames();
if (is_debug && !is_break && break_should_continue(&addr, rec->ExceptionCode))
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 = "32 bit"; 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, 0);
stack_info();
be_cpu->print_segment_info(dbg_curr_thread->handle, &dbg_context);
stack_backtrace(dbg_curr_tid);
}
else
{
static char* last_name;
static char* last_file;
char buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO* si = (SYMBOL_INFO*)buffer;
void* lin = memory_to_linear_addr(&addr);
DWORD64 disp64;
IMAGEHLP_LINE il;
DWORD disp;
si->SizeOfStruct = sizeof(*si);
si->MaxNameLen = 256;
il.SizeOfStruct = sizeof(il);
if (SymFromAddr(dbg_curr_process->handle, (DWORD_PTR)lin, &disp64, si) &&
SymGetLineFromAddr(dbg_curr_process->handle, (DWORD_PTR)lin, &disp, &il))
{
if ((!last_name || strcmp(last_name, si->Name)) ||
(!last_file || strcmp(last_file, il.FileName)))
{
HeapFree(GetProcessHeap(), 0, last_name);
HeapFree(GetProcessHeap(), 0, last_file);
last_name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(si->Name) + 1), si->Name);
last_file = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(il.FileName) + 1), il.FileName);
dbg_printf("%s () at %s:%u\n", last_name, last_file, il.LineNumber);
}
}
}
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)
{
ADDRESS64 tmp = addr;
/* Show where we crashed */
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_curr_thread->in_exception = FALSE;
}
static DWORD dbg_handle_exception(const EXCEPTION_RECORD* rec, BOOL first_chance)
{
BOOL is_debug = FALSE;
THREADNAME_INFO* pThreadName;
struct dbg_thread* pThread;
assert(dbg_curr_thread);
WINE_TRACE("exception=%x 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(!pThread)
{
dbg_printf("Thread ID=%04x not in our list of threads -> can't rename\n", pThreadName->dwThreadID);
return DBG_CONTINUE;
}
if (dbg_read_memory(pThreadName->szName, pThread->name, 9))
dbg_printf("Thread ID=%04x renamed using MS VC6 extension (name==\"%.9s\")\n",
pThread->tid, pThread->name);
return DBG_CONTINUE;
}
if (first_chance && !is_debug && !DBG_IVAR(BreakOnFirstChance) &&
!(rec->ExceptionFlags & EH_STACK_INVALID))
{
/* 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] == EXCEPTION_WRITE_FAULT ? "write" :
rec->ExceptionInformation[0] == EXCEPTION_EXECUTE_FAULT ? "execute" : "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:
{
ADDRESS64 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,
(void*)rec->ExceptionInformation[0], TRUE, FALSE,
dll, sizeof(dll));
if (HIWORD(rec->ExceptionInformation[1]))
memory_get_string(dbg_curr_process,
(void*)rec->ExceptionInformation[1], TRUE, FALSE,
name, sizeof(name));
else
sprintf( name, "%ld", rec->ExceptionInformation[1] );
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 point overflow");
break;
case EXCEPTION_FLT_UNDERFLOW:
dbg_printf("floating point underflow");
break;
case EXCEPTION_FLT_STACK_CHECK:
dbg_printf("floating point stack check");
break;
case CXX_EXCEPTION:
if(rec->NumberParameters == 3 && rec->ExceptionInformation[0] == CXX_FRAME_MAGIC)
dbg_printf("C++ exception(object = 0x%08lx, type = 0x%08lx)",
rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
else
dbg_printf("C++ exception with strange parameter count %d or magic 0x%08lx",
rec->NumberParameters, rec->ExceptionInformation[0]);
break;
default:
dbg_printf("0x%08x", rec->ExceptionCode);
break;
}
}
if( (rec->ExceptionFlags & EH_STACK_INVALID) ) {
dbg_printf( ", invalid program stack" );
}
if (dbg_exception_prolog(is_debug, first_chance, rec))
{
dbg_interactiveP = TRUE;
return 0;
}
dbg_exception_epilog();
return DBG_CONTINUE;
}
static BOOL tgt_process_active_close_process(struct dbg_process* pcs, BOOL kill);
static void fetch_module_name(void* name_addr, BOOL unicode, void* mod_addr,
WCHAR* buffer, size_t bufsz, BOOL is_pcs)
{
static WCHAR pcspid[] = {'P','r','o','c','e','s','s','_','%','0','8','x',0};
static WCHAR dlladdr[] = {'D','L','L','_','%','0','8','l','x',0};
memory_get_string_indirect(dbg_curr_process, name_addr, unicode, buffer, bufsz);
if (!buffer[0] &&
!GetModuleFileNameExW(dbg_curr_process->handle, mod_addr, buffer, bufsz))
{
if (is_pcs)
{
HMODULE h;
WORD (WINAPI *gpif)(HANDLE, LPWSTR, DWORD);
/* On Windows, when we get the process creation debug event for a process
* created by winedbg, the modules' list is not initialized yet. Hence,
* GetModuleFileNameExA (on the main module) will generate an error.
* Psapi (starting on XP) provides GetProcessImageFileName() which should
* give us the expected result
*/
if (!(h = GetModuleHandleA("psapi")) ||
!(gpif = (void*)GetProcAddress(h, "GetProcessImageFileNameW")) ||
!(gpif)(dbg_curr_process->handle, buffer, bufsz))
snprintfW(buffer, bufsz, pcspid, dbg_curr_pid);
}
else
snprintfW(buffer, bufsz, dlladdr, (unsigned long)mod_addr);
}
}
static unsigned dbg_handle_debug_event(DEBUG_EVENT* de)
{
union {
char bufferA[256];
WCHAR buffer[256];
} u;
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("%04x:%04x: not a registered process or thread (perhaps a 16 bit one ?)\n",
de->dwProcessId, de->dwThreadId);
break;
}
WINE_TRACE("%04x:%04x: exception code=%08x\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:
dbg_curr_process = dbg_add_process(&be_process_active_io, de->dwProcessId,
de->u.CreateProcessInfo.hProcess);
if (dbg_curr_process == NULL)
{
WINE_ERR("Couldn't create process\n");
break;
}
fetch_module_name(de->u.CreateProcessInfo.lpImageName,
de->u.CreateProcessInfo.fUnicode,
de->u.CreateProcessInfo.lpBaseOfImage,
u.buffer, sizeof(u.buffer) / sizeof(WCHAR), TRUE);
WINE_TRACE("%04x:%04x: create process '%s'/%p @%p (%u<%u>)\n",
de->dwProcessId, de->dwThreadId,
wine_dbgstr_w(u.buffer),
de->u.CreateProcessInfo.lpImageName,
de->u.CreateProcessInfo.lpStartAddress,
de->u.CreateProcessInfo.dwDebugInfoFileOffset,
de->u.CreateProcessInfo.nDebugInfoSize);
dbg_set_process_name(dbg_curr_process, u.buffer);
if (!dbg_init(dbg_curr_process->handle, u.buffer, FALSE))
dbg_printf("Couldn't initiate DbgHelp\n");
if (!dbg_load_module(dbg_curr_process->handle, de->u.CreateProcessInfo.hFile, u.buffer,
(DWORD_PTR)de->u.CreateProcessInfo.lpBaseOfImage, 0))
dbg_printf("couldn't load main module (%u)\n", GetLastError());
WINE_TRACE("%04x:%04x: create thread I @%p\n",
de->dwProcessId, de->dwThreadId, 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("%04x:%04x: exit process (%d)\n",
de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
if (dbg_curr_process == NULL)
{
WINE_ERR("Unknown process\n");
break;
}
tgt_process_active_close_process(dbg_curr_process, FALSE);
dbg_printf("Process of pid=%04x has terminated\n", de->dwProcessId);
break;
case CREATE_THREAD_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: create thread D @%p\n",
de->dwProcessId, de->dwThreadId, 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("%04x:%04x: exit thread (%d)\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;
}
fetch_module_name(de->u.LoadDll.lpImageName,
de->u.LoadDll.fUnicode,
de->u.LoadDll.lpBaseOfDll,
u.buffer, sizeof(u.buffer) / sizeof(WCHAR), FALSE);
WINE_TRACE("%04x:%04x: loads DLL %s @%p (%u<%u>)\n",
de->dwProcessId, de->dwThreadId,
wine_dbgstr_w(u.buffer), de->u.LoadDll.lpBaseOfDll,
de->u.LoadDll.dwDebugInfoFileOffset,
de->u.LoadDll.nDebugInfoSize);
dbg_load_module(dbg_curr_process->handle, de->u.LoadDll.hFile, u.buffer,
(DWORD_PTR)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",
dbg_W2A(u.buffer, -1), (unsigned long)de->u.LoadDll.lpBaseOfDll);
if (dbg_fetch_context()) cont = 0;
}
break;
case UNLOAD_DLL_DEBUG_EVENT:
WINE_TRACE("%04x:%04x: unload DLL @%p\n",
de->dwProcessId, de->dwThreadId,
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,
de->u.DebugString.lpDebugStringData, TRUE,
de->u.DebugString.fUnicode, u.bufferA, sizeof(u.bufferA));
WINE_TRACE("%04x:%04x: output debug string (%s)\n",
de->dwProcessId, de->dwThreadId, u.bufferA);
break;
case RIP_EVENT:
WINE_TRACE("%04x:%04x: rip error=%u type=%u\n",
de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
de->u.RipInfo.dwType);
break;
default:
WINE_TRACE("%04x:%04x: unknown event (%x)\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_curr_thread->in_exception)
{
ADDRESS64 addr;
char hexbuf[MAX_OFFSET_TO_STR_LEN];
dbg_exception_epilog();
memory_get_current_pc(&addr);
WINE_TRACE("Exiting debugger PC=%s mode=%d count=%d\n",
memory_offset_to_string(hexbuf, addr.Offset, 0),
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 %04x\n", dbg_curr_tid);
}
}
dbg_interactiveP = FALSE;
if (!ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, cont))
dbg_printf("Cannot continue on %04x (%08x)\n", dbg_curr_tid, cont);
}
static void wait_exception(void)
{
DEBUG_EVENT de;
while (dbg_num_processes() && WaitForDebugEvent(&de, INFINITE))
{
if (dbg_handle_debug_event(&de)) break;
}
dbg_interactiveP = TRUE;
}
void dbg_wait_next_exception(DWORD cont, int count, int mode)
{
ADDRESS64 addr;
char hexbuf[MAX_OFFSET_TO_STR_LEN];
if (cont == DBG_CONTINUE)
{
dbg_curr_thread->exec_count = count;
dbg_curr_thread->exec_mode = mode;
}
dbg_resume_debuggee(cont);
wait_exception();
if (!dbg_curr_process) return;
memory_get_current_pc(&addr);
WINE_TRACE("Entering debugger PC=%s mode=%d count=%d\n",
memory_offset_to_string(hexbuf, addr.Offset, 0),
dbg_curr_thread->exec_mode,
dbg_curr_thread->exec_count);
}
void dbg_active_wait_for_first_exception(void)
{
dbg_interactiveP = FALSE;
/* wait for first exception */
wait_exception();
}
static unsigned dbg_start_debuggee(LPSTR cmdLine)
{
PROCESS_INFORMATION info;
STARTUPINFOA startup, current;
DWORD flags;
GetStartupInfoA(&current);
memset(&startup, 0, sizeof(startup));
startup.cb = sizeof(startup);
startup.dwFlags = STARTF_USESHOWWINDOW;
startup.wShowWindow = (current.dwFlags & STARTF_USESHOWWINDOW) ?
current.wShowWindow : SW_SHOWNORMAL;
/* FIXME: shouldn't need the CREATE_NEW_CONSOLE, but as usual CUI:s need it
* while GUI:s don't
*/
flags = DEBUG_PROCESS | CREATE_NEW_CONSOLE;
if (!DBG_IVAR(AlsoDebugProcChild)) flags |= DEBUG_ONLY_THIS_PROCESS;
if (!CreateProcess(NULL, cmdLine, NULL, NULL, FALSE, flags,
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(&be_process_active_io, dbg_curr_pid, 0))) return FALSE;
dbg_curr_process->active_debuggee = TRUE;
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
{
if (!dbg_last_cmd_line)
{
dbg_printf("Cannot find previously used command line.\n");
return;
}
dbg_start_debuggee(dbg_last_cmd_line);
dbg_active_wait_for_first_exception();
source_list_from_addr(NULL, 0);
}
}
static BOOL str2int(const char* str, DWORD* val)
{
char* ptr;
*val = strtol(str, &ptr, 10);
return str < ptr && !*ptr;
}
/******************************************************************
* dbg_active_attach
*
* Tries to attach to a running process
* Handles the <pid> or <pid> <evt> forms
*/
enum dbg_start dbg_active_attach(int argc, char* argv[])
{
DWORD pid, evt;
/* try the form <myself> pid */
if (argc == 1 && str2int(argv[0], &pid) && pid != 0)
{
if (!dbg_attach_debuggee(pid, FALSE))
return start_error_init;
}
/* try the form <myself> pid evt (Win32 JIT debugger) */
else if (argc == 2 && str2int(argv[0], &pid) && pid != 0 &&
str2int(argv[1], &evt) && evt != 0)
{
if (!dbg_attach_debuggee(pid, TRUE))
{
/* don't care about result */
SetEvent((HANDLE)evt);
return start_error_init;
}
if (!SetEvent((HANDLE)evt))
{
WINE_ERR("Invalid event handle: %x\n", evt);
return start_error_init;
}
CloseHandle((HANDLE)evt);
}
else return start_error_parse;
dbg_curr_pid = pid;
return start_ok;
}
/******************************************************************
* dbg_active_launch
*
* Launches a debuggee (with its arguments) from argc/argv
*/
enum dbg_start dbg_active_launch(int argc, char* argv[])
{
int i, len;
LPSTR cmd_line;
if (argc == 0) return start_error_parse;
if (!(cmd_line = HeapAlloc(GetProcessHeap(), 0, len = 1)))
{
oom_leave:
dbg_printf("Out of memory\n");
return start_error_init;
}
cmd_line[0] = '\0';
for (i = 0; i < argc; i++)
{
len += strlen(argv[i]) + 1;
if (!(cmd_line = HeapReAlloc(GetProcessHeap(), 0, cmd_line, len)))
goto oom_leave;
strcat(cmd_line, argv[i]);
cmd_line[len - 2] = ' ';
cmd_line[len - 1] = '\0';
}
if (!dbg_start_debuggee(cmd_line))
{
HeapFree(GetProcessHeap(), 0, cmd_line);
return start_error_init;
}
HeapFree(GetProcessHeap(), 0, dbg_last_cmd_line);
dbg_last_cmd_line = cmd_line;
return start_ok;
}
/******************************************************************
* dbg_active_auto
*
* Starts (<pid> or <pid> <evt>) in automatic mode
*/
enum dbg_start dbg_active_auto(int argc, char* argv[])
{
HANDLE hFile;
enum dbg_start ds = start_error_parse;
if (!strcmp(argv[0], "--auto"))
{
/* auto mode */
argc--; argv++;
ds = dbg_active_attach(argc, argv);
if (ds != start_ok) {
msgbox_res_id(NULL, IDS_INVALID_PARAMS, IDS_AUTO_CAPTION, MB_OK);
return ds;
}
if (!display_crash_dialog()) {
dbg_init_console();
dbg_start_interactive(INVALID_HANDLE_VALUE);
return start_ok;
}
hFile = parser_generate_command_file("echo Modules:", "info share",
"echo Threads:", "info threads",
"backtrace", "detach", NULL);
}
else if (!strcmp(argv[0], "--minidump"))
{
const char* file = NULL;
char tmp[8 + 1 + MAX_PATH]; /* minidump <file> */
argc--; argv++;
/* hard stuff now ; we can get things like:
* --minidump <pid> 1 arg
* --minidump <pid> <evt> 2 args
* --minidump <file> <pid> 2 args
* --minidump <file> <pid> <evt> 3 args
*/
switch (argc)
{
case 1:
ds = dbg_active_attach(argc, argv);
break;
case 2:
if ((ds = dbg_active_attach(argc, argv)) != start_ok)
{
file = argv[0];
ds = dbg_active_attach(argc - 1, argv + 1);
}
break;
case 3:
file = argv[0];
ds = dbg_active_attach(argc - 1, argv + 1);
break;
default:
return start_error_parse;
}
if (ds != start_ok) return ds;
memcpy(tmp, "minidump \"", 10);
if (!file)
{
char path[MAX_PATH];
GetTempPath(sizeof(path), path);
GetTempFileName(path, "WD", 0, tmp + 10);
}
else strcpy(tmp + 10, file);
strcat(tmp, "\"");
if (!file)
{
/* FIXME: should generate unix name as well */
dbg_printf("Capturing program state in %s\n", tmp + 9);
}
hFile = parser_generate_command_file(tmp, "detach", NULL);
}
else return start_error_parse;
if (hFile == INVALID_HANDLE_VALUE) return start_error_parse;
if (dbg_curr_process->active_debuggee)
dbg_active_wait_for_first_exception();
dbg_interactiveP = TRUE;
parser_handle(hFile);
return start_ok;
}
static BOOL tgt_process_active_close_process(struct dbg_process* pcs, BOOL kill)
{
if (pcs == dbg_curr_process)
{
/* 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);
if (dbg_curr_thread->in_exception)
{
SetThreadContext(dbg_curr_thread->handle, &dbg_context);
ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, DBG_CONTINUE);
}
}
if (kill)
{
TerminateProcess(pcs->handle, 0);
}
else
{
if (!DebugActiveProcessStop(pcs->pid)) return FALSE;
}
SymCleanup(pcs->handle);
dbg_del_process(pcs);
return TRUE;
}
static BOOL tgt_process_active_read(HANDLE hProcess, const void* addr,
void* buffer, SIZE_T len, SIZE_T* rlen)
{
return ReadProcessMemory( hProcess, addr, buffer, len, rlen );
}
static BOOL tgt_process_active_write(HANDLE hProcess, void* addr,
const void* buffer, SIZE_T len, SIZE_T* wlen)
{
return WriteProcessMemory( hProcess, addr, buffer, len, wlen );
}
static BOOL tgt_process_active_get_selector(HANDLE hThread, DWORD sel, LDT_ENTRY* le)
{
return GetThreadSelectorEntry( hThread, sel, le );
}
static struct be_process_io be_process_active_io =
{
tgt_process_active_close_process,
tgt_process_active_read,
tgt_process_active_write,
tgt_process_active_get_selector
};
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