2 * Win32 debugger functions
4 * Copyright (C) 1999 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #define WIN32_NO_STATUS
27 #include "wine/server.h"
28 #include "kernel_private.h"
29 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(debugstr);
34 /******************************************************************************
35 * WaitForDebugEvent (KERNEL32.@)
37 * Waits for a debugging event to occur in a process being debugged before
38 * filling out the debug event structure.
41 * event [O] Address of structure for event information.
42 * timeout [I] Number of milliseconds to wait for event.
46 * Returns true if a debug event occurred and false if the call timed out.
48 BOOL WINAPI WaitForDebugEvent(
59 SERVER_START_REQ( wait_debug_event )
61 req->get_handle = (timeout != 0);
62 wine_server_set_reply( req, &data, sizeof(data) );
63 if (!(ret = !wine_server_call_err( req ))) goto done;
65 if (!wine_server_reply_size(reply)) /* timeout */
67 wait = wine_server_ptr_handle( reply->wait );
71 event->dwDebugEventCode = data.code;
72 event->dwProcessId = (DWORD)reply->pid;
73 event->dwThreadId = (DWORD)reply->tid;
76 case EXCEPTION_DEBUG_EVENT:
77 event->u.Exception.dwFirstChance = data.exception.first;
78 event->u.Exception.ExceptionRecord.ExceptionCode = data.exception.exc_code;
79 event->u.Exception.ExceptionRecord.ExceptionFlags = data.exception.flags;
80 event->u.Exception.ExceptionRecord.ExceptionRecord = wine_server_get_ptr( data.exception.record );
81 event->u.Exception.ExceptionRecord.ExceptionAddress = wine_server_get_ptr( data.exception.address );
82 event->u.Exception.ExceptionRecord.NumberParameters = data.exception.nb_params;
83 for (i = 0; i < data.exception.nb_params; i++)
84 event->u.Exception.ExceptionRecord.ExceptionInformation[i] = data.exception.params[i];
86 case CREATE_THREAD_DEBUG_EVENT:
87 event->u.CreateThread.hThread = wine_server_ptr_handle( data.create_thread.handle );
88 event->u.CreateThread.lpThreadLocalBase = wine_server_get_ptr( data.create_thread.teb );
89 event->u.CreateThread.lpStartAddress = wine_server_get_ptr( data.create_thread.start );
91 case CREATE_PROCESS_DEBUG_EVENT:
92 event->u.CreateProcessInfo.hFile = wine_server_ptr_handle( data.create_process.file );
93 event->u.CreateProcessInfo.hProcess = wine_server_ptr_handle( data.create_process.process );
94 event->u.CreateProcessInfo.hThread = wine_server_ptr_handle( data.create_process.thread );
95 event->u.CreateProcessInfo.lpBaseOfImage = wine_server_get_ptr( data.create_process.base );
96 event->u.CreateProcessInfo.dwDebugInfoFileOffset = data.create_process.dbg_offset;
97 event->u.CreateProcessInfo.nDebugInfoSize = data.create_process.dbg_size;
98 event->u.CreateProcessInfo.lpThreadLocalBase = wine_server_get_ptr( data.create_process.teb );
99 event->u.CreateProcessInfo.lpStartAddress = wine_server_get_ptr( data.create_process.start );
100 event->u.CreateProcessInfo.lpImageName = wine_server_get_ptr( data.create_process.name );
101 event->u.CreateProcessInfo.fUnicode = data.create_process.unicode;
103 case EXIT_THREAD_DEBUG_EVENT:
104 event->u.ExitThread.dwExitCode = data.exit.exit_code;
106 case EXIT_PROCESS_DEBUG_EVENT:
107 event->u.ExitProcess.dwExitCode = data.exit.exit_code;
109 case LOAD_DLL_DEBUG_EVENT:
110 event->u.LoadDll.hFile = wine_server_ptr_handle( data.load_dll.handle );
111 event->u.LoadDll.lpBaseOfDll = wine_server_get_ptr( data.load_dll.base );
112 event->u.LoadDll.dwDebugInfoFileOffset = data.load_dll.dbg_offset;
113 event->u.LoadDll.nDebugInfoSize = data.load_dll.dbg_size;
114 event->u.LoadDll.lpImageName = wine_server_get_ptr( data.load_dll.name );
115 event->u.LoadDll.fUnicode = data.load_dll.unicode;
117 case UNLOAD_DLL_DEBUG_EVENT:
118 event->u.UnloadDll.lpBaseOfDll = wine_server_get_ptr( data.unload_dll.base );
120 case OUTPUT_DEBUG_STRING_EVENT:
121 event->u.DebugString.lpDebugStringData = wine_server_get_ptr( data.output_string.string );
122 event->u.DebugString.fUnicode = FALSE;
123 event->u.DebugString.nDebugStringLength = data.output_string.length;
126 event->u.RipInfo.dwError = data.rip_info.error;
127 event->u.RipInfo.dwType = data.rip_info.type;
134 if (ret) return TRUE;
136 res = WaitForSingleObject( wait, timeout );
138 if (res != STATUS_WAIT_0) break;
140 SetLastError( ERROR_SEM_TIMEOUT );
145 /**********************************************************************
146 * ContinueDebugEvent (KERNEL32.@)
148 * Enables a thread that previously produced a debug event to continue.
151 * pid [I] The id of the process to continue.
152 * tid [I] The id of the thread to continue.
153 * status [I] The rule to apply to unhandled exeptions.
157 * True if the debugger is listed as the processes owner and the process
158 * and thread are valid.
160 BOOL WINAPI ContinueDebugEvent(
166 SERVER_START_REQ( continue_debug_event )
170 req->status = status;
171 ret = !wine_server_call_err( req );
178 /**********************************************************************
179 * DebugActiveProcess (KERNEL32.@)
181 * Attempts to attach the debugger to a process.
184 * pid [I] The process to be debugged.
188 * True if the debugger was attached to process.
190 BOOL WINAPI DebugActiveProcess( DWORD pid )
193 SERVER_START_REQ( debug_process )
197 ret = !wine_server_call_err( req );
203 /**********************************************************************
204 * DebugActiveProcessStop (KERNEL32.@)
206 * Attempts to detach the debugger from a process.
209 * pid [I] The process to be detached.
213 * True if the debugger was detached from the process.
215 BOOL WINAPI DebugActiveProcessStop( DWORD pid )
218 SERVER_START_REQ( debug_process )
222 ret = !wine_server_call_err( req );
229 /***********************************************************************
230 * OutputDebugStringA (KERNEL32.@)
232 * Output by an application of an ascii string to a debugger (if attached)
236 * str [I] The message to be logged and given to the debugger.
242 void WINAPI OutputDebugStringA( LPCSTR str )
244 static HANDLE DBWinMutex = NULL;
245 static BOOL mutex_inited = FALSE;
247 /* send string to attached debugger */
248 SERVER_START_REQ( output_debug_string )
250 req->string = wine_server_client_ptr( str );
251 req->length = strlen(str) + 1;
252 wine_server_call( req );
258 /* send string to a system-wide monitor */
259 /* FIXME should only send to monitor if no debuggers are attached */
263 /* first call to OutputDebugString, initialize mutex handle */
264 static const WCHAR mutexname[] = {'D','B','W','i','n','M','u','t','e','x',0};
265 HANDLE mutex = CreateMutexExW( NULL, mutexname, 0, SYNCHRONIZE );
268 if (InterlockedCompareExchangePointer( &DBWinMutex, mutex, 0 ) != 0)
270 /* someone beat us here... */
271 CloseHandle( mutex );
279 static const WCHAR shmname[] = {'D','B','W','I','N','_','B','U','F','F','E','R',0};
280 static const WCHAR eventbuffername[] = {'D','B','W','I','N','_','B','U','F','F','E','R','_','R','E','A','D','Y',0};
281 static const WCHAR eventdataname[] = {'D','B','W','I','N','_','D','A','T','A','_','R','E','A','D','Y',0};
284 mapping = OpenFileMappingW( FILE_MAP_WRITE, FALSE, shmname );
288 HANDLE eventbuffer, eventdata;
290 buffer = MapViewOfFile( mapping, FILE_MAP_WRITE, 0, 0, 0 );
291 eventbuffer = OpenEventW( SYNCHRONIZE, FALSE, eventbuffername );
292 eventdata = OpenEventW( EVENT_MODIFY_STATE, FALSE, eventdataname );
294 if (buffer && eventbuffer && eventdata)
296 /* monitor is present, synchronize with other OutputDebugString invokations */
297 WaitForSingleObject( DBWinMutex, INFINITE );
299 /* acquire control over the buffer */
300 if (WaitForSingleObject( eventbuffer, 10000 ) == WAIT_OBJECT_0)
303 struct _mon_buffer_t {
306 } *mon_buffer = (struct _mon_buffer_t*) buffer;
308 str_len = strlen( str );
309 if (str_len > (4096 - sizeof(DWORD) - 1))
310 str_len = 4096 - sizeof(DWORD) - 1;
312 mon_buffer->pid = GetCurrentProcessId();
313 memcpy( mon_buffer->buffer, str, str_len );
314 mon_buffer->buffer[str_len] = 0;
316 /* signal data ready */
317 SetEvent( eventdata );
319 ReleaseMutex( DBWinMutex );
323 UnmapViewOfFile( buffer );
325 CloseHandle( eventbuffer );
327 CloseHandle( eventdata );
328 CloseHandle( mapping );
334 /***********************************************************************
335 * OutputDebugStringW (KERNEL32.@)
337 * Output by an application of a unicode string to a debugger (if attached)
341 * str [I] The message to be logged and given to the debugger.
347 void WINAPI OutputDebugStringW( LPCWSTR str )
352 RtlInitUnicodeString( &strW, str );
353 if (!RtlUnicodeStringToAnsiString( &strA, &strW, TRUE ))
355 OutputDebugStringA( strA.Buffer );
356 RtlFreeAnsiString( &strA );
361 /***********************************************************************
362 * DebugBreak (KERNEL32.@)
364 * Raises an exception so that a debugger (if attached)
365 * can take some action.
371 void WINAPI DebugBreak(void)
376 /***********************************************************************
377 * DebugBreakProcess (KERNEL32.@)
379 * Raises an exception so that a debugger (if attached)
380 * can take some action. Same as DebugBreak, but applies to any process.
383 * hProc [I] Process to break into.
387 * True if successful.
389 BOOL WINAPI DebugBreakProcess(HANDLE hProc)
393 TRACE("(%p)\n", hProc);
395 SERVER_START_REQ( debug_break )
397 req->handle = wine_server_obj_handle( hProc );
398 ret = !wine_server_call_err( req );
399 self = ret && reply->self;
402 if (self) DbgBreakPoint();
407 /***********************************************************************
408 * IsDebuggerPresent (KERNEL32.@)
410 * Allows a process to determine if there is a debugger attached.
416 * True if there is a debugger attached.
418 BOOL WINAPI IsDebuggerPresent(void)
420 return NtCurrentTeb()->Peb->BeingDebugged;
423 /***********************************************************************
424 * CheckRemoteDebuggerPresent (KERNEL32.@)
426 * Allows a process to determine if there is a remote debugger
433 * TRUE because it is a stub.
435 BOOL WINAPI CheckRemoteDebuggerPresent(HANDLE process, PBOOL DebuggerPresent)
440 if(!process || !DebuggerPresent)
442 SetLastError(ERROR_INVALID_PARAMETER);
446 status = NtQueryInformationProcess(process, ProcessDebugPort, &port, sizeof(port), NULL);
447 if (status != STATUS_SUCCESS)
449 SetLastError(RtlNtStatusToDosError(status));
453 *DebuggerPresent = !!port;
457 /***********************************************************************
458 * DebugSetProcessKillOnExit (KERNEL32.@)
460 * Let a debugger decide whether a debuggee will be killed upon debugger
464 * kill [I] If set to true then kill the process on exit.
467 * True if successful, false otherwise.
469 BOOL WINAPI DebugSetProcessKillOnExit(BOOL kill)
473 SERVER_START_REQ( set_debugger_kill_on_exit )
475 req->kill_on_exit = kill;
476 ret = !wine_server_call_err( req );