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
26 #define WIN32_NO_STATUS
28 #include "wine/server.h"
29 #include "kernel_private.h"
30 #include "wine/debug.h"
32 WINE_DEFAULT_DEBUG_CHANNEL(debugstr);
35 /******************************************************************************
36 * WaitForDebugEvent (KERNEL32.@)
38 * Waits for a debugging event to occur in a process being debugged before
39 * filling out the debug event structure.
42 * event [O] Address of structure for event information.
43 * timeout [I] Number of milliseconds to wait for event.
47 * Returns true if a debug event occurred and false if the call timed out.
49 BOOL WINAPI WaitForDebugEvent(
60 SERVER_START_REQ( wait_debug_event )
62 req->get_handle = (timeout != 0);
63 wine_server_set_reply( req, &data, sizeof(data) );
64 if (!(ret = !wine_server_call_err( req ))) goto done;
66 if (!wine_server_reply_size(reply)) /* timeout */
68 wait = wine_server_ptr_handle( reply->wait );
72 event->dwDebugEventCode = data.code;
73 event->dwProcessId = (DWORD)reply->pid;
74 event->dwThreadId = (DWORD)reply->tid;
77 case EXCEPTION_DEBUG_EVENT:
78 event->u.Exception.dwFirstChance = data.exception.first;
79 event->u.Exception.ExceptionRecord.ExceptionCode = data.exception.exc_code;
80 event->u.Exception.ExceptionRecord.ExceptionFlags = data.exception.flags;
81 event->u.Exception.ExceptionRecord.ExceptionRecord = wine_server_get_ptr( data.exception.record );
82 event->u.Exception.ExceptionRecord.ExceptionAddress = wine_server_get_ptr( data.exception.address );
83 event->u.Exception.ExceptionRecord.NumberParameters = data.exception.nb_params;
84 for (i = 0; i < data.exception.nb_params; i++)
85 event->u.Exception.ExceptionRecord.ExceptionInformation[i] = data.exception.params[i];
87 case CREATE_THREAD_DEBUG_EVENT:
88 event->u.CreateThread.hThread = wine_server_ptr_handle( data.create_thread.handle );
89 event->u.CreateThread.lpThreadLocalBase = wine_server_get_ptr( data.create_thread.teb );
90 event->u.CreateThread.lpStartAddress = wine_server_get_ptr( data.create_thread.start );
92 case CREATE_PROCESS_DEBUG_EVENT:
93 event->u.CreateProcessInfo.hFile = wine_server_ptr_handle( data.create_process.file );
94 event->u.CreateProcessInfo.hProcess = wine_server_ptr_handle( data.create_process.process );
95 event->u.CreateProcessInfo.hThread = wine_server_ptr_handle( data.create_process.thread );
96 event->u.CreateProcessInfo.lpBaseOfImage = wine_server_get_ptr( data.create_process.base );
97 event->u.CreateProcessInfo.dwDebugInfoFileOffset = data.create_process.dbg_offset;
98 event->u.CreateProcessInfo.nDebugInfoSize = data.create_process.dbg_size;
99 event->u.CreateProcessInfo.lpThreadLocalBase = wine_server_get_ptr( data.create_process.teb );
100 event->u.CreateProcessInfo.lpStartAddress = wine_server_get_ptr( data.create_process.start );
101 event->u.CreateProcessInfo.lpImageName = wine_server_get_ptr( data.create_process.name );
102 event->u.CreateProcessInfo.fUnicode = data.create_process.unicode;
104 case EXIT_THREAD_DEBUG_EVENT:
105 event->u.ExitThread.dwExitCode = data.exit.exit_code;
107 case EXIT_PROCESS_DEBUG_EVENT:
108 event->u.ExitProcess.dwExitCode = data.exit.exit_code;
110 case LOAD_DLL_DEBUG_EVENT:
111 event->u.LoadDll.hFile = wine_server_ptr_handle( data.load_dll.handle );
112 event->u.LoadDll.lpBaseOfDll = wine_server_get_ptr( data.load_dll.base );
113 event->u.LoadDll.dwDebugInfoFileOffset = data.load_dll.dbg_offset;
114 event->u.LoadDll.nDebugInfoSize = data.load_dll.dbg_size;
115 event->u.LoadDll.lpImageName = wine_server_get_ptr( data.load_dll.name );
116 event->u.LoadDll.fUnicode = data.load_dll.unicode;
118 case UNLOAD_DLL_DEBUG_EVENT:
119 event->u.UnloadDll.lpBaseOfDll = wine_server_get_ptr( data.unload_dll.base );
121 case OUTPUT_DEBUG_STRING_EVENT:
122 event->u.DebugString.lpDebugStringData = wine_server_get_ptr( data.output_string.string );
123 event->u.DebugString.fUnicode = FALSE;
124 event->u.DebugString.nDebugStringLength = data.output_string.length;
127 event->u.RipInfo.dwError = data.rip_info.error;
128 event->u.RipInfo.dwType = data.rip_info.type;
135 if (ret) return TRUE;
137 res = WaitForSingleObject( wait, timeout );
139 if (res != STATUS_WAIT_0) break;
141 SetLastError( ERROR_SEM_TIMEOUT );
146 /**********************************************************************
147 * ContinueDebugEvent (KERNEL32.@)
149 * Enables a thread that previously produced a debug event to continue.
152 * pid [I] The id of the process to continue.
153 * tid [I] The id of the thread to continue.
154 * status [I] The rule to apply to unhandled exeptions.
158 * True if the debugger is listed as the processes owner and the process
159 * and thread are valid.
161 BOOL WINAPI ContinueDebugEvent(
167 SERVER_START_REQ( continue_debug_event )
171 req->status = status;
172 ret = !wine_server_call_err( req );
179 /**********************************************************************
180 * DebugActiveProcess (KERNEL32.@)
182 * Attempts to attach the debugger to a process.
185 * pid [I] The process to be debugged.
189 * True if the debugger was attached to process.
191 BOOL WINAPI DebugActiveProcess( DWORD pid )
194 SERVER_START_REQ( debug_process )
198 ret = !wine_server_call_err( req );
204 /**********************************************************************
205 * DebugActiveProcessStop (KERNEL32.@)
207 * Attempts to detach the debugger from a process.
210 * pid [I] The process to be detached.
214 * True if the debugger was detached from the process.
216 BOOL WINAPI DebugActiveProcessStop( DWORD pid )
219 SERVER_START_REQ( debug_process )
223 ret = !wine_server_call_err( req );
230 /***********************************************************************
231 * OutputDebugStringA (KERNEL32.@)
233 * Output by an application of an ascii string to a debugger (if attached)
237 * str [I] The message to be logged and given to the debugger.
243 void WINAPI OutputDebugStringA( LPCSTR str )
245 static HANDLE DBWinMutex = NULL;
246 static BOOL mutex_inited = FALSE;
248 /* send string to attached debugger */
249 SERVER_START_REQ( output_debug_string )
251 req->string = wine_server_client_ptr( str );
252 req->length = strlen(str) + 1;
253 wine_server_call( req );
257 WARN("%s\n", debugstr_a(str));
259 /* send string to a system-wide monitor */
260 /* FIXME should only send to monitor if no debuggers are attached */
264 /* first call to OutputDebugString, initialize mutex handle */
265 static const WCHAR mutexname[] = {'D','B','W','i','n','M','u','t','e','x',0};
266 HANDLE mutex = CreateMutexExW( NULL, mutexname, 0, SYNCHRONIZE );
269 if (InterlockedCompareExchangePointer( &DBWinMutex, mutex, 0 ) != 0)
271 /* someone beat us here... */
272 CloseHandle( mutex );
280 static const WCHAR shmname[] = {'D','B','W','I','N','_','B','U','F','F','E','R',0};
281 static const WCHAR eventbuffername[] = {'D','B','W','I','N','_','B','U','F','F','E','R','_','R','E','A','D','Y',0};
282 static const WCHAR eventdataname[] = {'D','B','W','I','N','_','D','A','T','A','_','R','E','A','D','Y',0};
285 mapping = OpenFileMappingW( FILE_MAP_WRITE, FALSE, shmname );
289 HANDLE eventbuffer, eventdata;
291 buffer = MapViewOfFile( mapping, FILE_MAP_WRITE, 0, 0, 0 );
292 eventbuffer = OpenEventW( SYNCHRONIZE, FALSE, eventbuffername );
293 eventdata = OpenEventW( EVENT_MODIFY_STATE, FALSE, eventdataname );
295 if (buffer && eventbuffer && eventdata)
297 /* monitor is present, synchronize with other OutputDebugString invocations */
298 WaitForSingleObject( DBWinMutex, INFINITE );
300 /* acquire control over the buffer */
301 if (WaitForSingleObject( eventbuffer, 10000 ) == WAIT_OBJECT_0)
304 struct _mon_buffer_t {
307 } *mon_buffer = (struct _mon_buffer_t*) buffer;
309 str_len = strlen( str );
310 if (str_len > (4096 - sizeof(DWORD) - 1))
311 str_len = 4096 - sizeof(DWORD) - 1;
313 mon_buffer->pid = GetCurrentProcessId();
314 memcpy( mon_buffer->buffer, str, str_len );
315 mon_buffer->buffer[str_len] = 0;
317 /* signal data ready */
318 SetEvent( eventdata );
320 ReleaseMutex( DBWinMutex );
324 UnmapViewOfFile( buffer );
326 CloseHandle( eventbuffer );
328 CloseHandle( eventdata );
329 CloseHandle( mapping );
335 /***********************************************************************
336 * OutputDebugStringW (KERNEL32.@)
338 * Output by an application of a unicode string to a debugger (if attached)
342 * str [I] The message to be logged and given to the debugger.
348 void WINAPI OutputDebugStringW( LPCWSTR str )
353 RtlInitUnicodeString( &strW, str );
354 if (!RtlUnicodeStringToAnsiString( &strA, &strW, TRUE ))
356 OutputDebugStringA( strA.Buffer );
357 RtlFreeAnsiString( &strA );
362 /***********************************************************************
363 * DebugBreak (KERNEL32.@)
365 * Raises an exception so that a debugger (if attached)
366 * can take some action.
368 #if defined(__i386__) || defined(__x86_64__)
369 __ASM_STDCALL_FUNC( DebugBreak, 0, "jmp " __ASM_NAME("DbgBreakPoint") )
371 void WINAPI DebugBreak(void)
377 /***********************************************************************
378 * DebugBreakProcess (KERNEL32.@)
380 * Raises an exception so that a debugger (if attached)
381 * can take some action. Same as DebugBreak, but applies to any process.
384 * hProc [I] Process to break into.
388 * True if successful.
390 BOOL WINAPI DebugBreakProcess(HANDLE hProc)
394 TRACE("(%p)\n", hProc);
396 SERVER_START_REQ( debug_break )
398 req->handle = wine_server_obj_handle( hProc );
399 ret = !wine_server_call_err( req );
400 self = ret && reply->self;
403 if (self) DbgBreakPoint();
408 /***********************************************************************
409 * IsDebuggerPresent (KERNEL32.@)
411 * Allows a process to determine if there is a debugger attached.
417 * True if there is a debugger attached.
419 BOOL WINAPI IsDebuggerPresent(void)
421 return NtCurrentTeb()->Peb->BeingDebugged;
424 /***********************************************************************
425 * CheckRemoteDebuggerPresent (KERNEL32.@)
427 * Allows a process to determine if there is a remote debugger
434 * TRUE because it is a stub.
436 BOOL WINAPI CheckRemoteDebuggerPresent(HANDLE process, PBOOL DebuggerPresent)
441 if(!process || !DebuggerPresent)
443 SetLastError(ERROR_INVALID_PARAMETER);
447 status = NtQueryInformationProcess(process, ProcessDebugPort, &port, sizeof(port), NULL);
448 if (status != STATUS_SUCCESS)
450 SetLastError(RtlNtStatusToDosError(status));
454 *DebuggerPresent = !!port;
458 /***********************************************************************
459 * DebugSetProcessKillOnExit (KERNEL32.@)
461 * Let a debugger decide whether a debuggee will be killed upon debugger
465 * kill [I] If set to true then kill the process on exit.
468 * True if successful, false otherwise.
470 BOOL WINAPI DebugSetProcessKillOnExit(BOOL kill)
474 SERVER_START_REQ( set_debugger_kill_on_exit )
476 req->kill_on_exit = kill;
477 ret = !wine_server_call_err( req );