2 * Kernel initialization code
4 * Copyright 2000 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
22 #include "wine/port.h"
36 #include "wine/winbase16.h"
37 #include "wine/library.h"
39 #include "kernel_private.h"
40 #include "kernel16_private.h"
41 #include "console_private.h"
42 #include "wine/debug.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(process);
46 extern int CDECL __wine_set_signal_handler(unsigned, int (*)(unsigned));
48 static ULONGLONG server_start_time;
50 /***********************************************************************
51 * KERNEL thread initialisation routine
53 static void thread_attach(void)
55 /* allocate the 16-bit stack (FIXME: should be done lazily) */
56 HGLOBAL16 hstack = WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
57 kernel_get_thread_data()->stack_sel = GlobalHandleToSel16( hstack );
58 NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( kernel_get_thread_data()->stack_sel,
59 0x10000 - sizeof(STACK16FRAME) );
60 memset( (char *)GlobalLock16(hstack) + 0x10000 - sizeof(STACK16FRAME), 0, sizeof(STACK16FRAME) );
64 /***********************************************************************
65 * KERNEL thread finalisation routine
67 static void thread_detach(void)
69 /* free the 16-bit stack */
70 WOWGlobalFree16( kernel_get_thread_data()->stack_sel );
71 NtCurrentTeb()->WOW32Reserved = 0;
72 if (NtCurrentTeb()->Tib.SubSystemTib) TASK_ExitTask();
76 /***********************************************************************
79 static void set_entry_point( HMODULE module, const char *name, DWORD rva )
81 IMAGE_EXPORT_DIRECTORY *exports;
84 if ((exports = RtlImageDirectoryEntryToData( module, TRUE,
85 IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
87 DWORD *functions = (DWORD *)((char *)module + exports->AddressOfFunctions);
88 const WORD *ordinals = (const WORD *)((const char *)module + exports->AddressOfNameOrdinals);
89 const DWORD *names = (const DWORD *)((const char *)module + exports->AddressOfNames);
90 int min = 0, max = exports->NumberOfNames - 1;
94 int res, pos = (min + max) / 2;
95 const char *ename = (const char *)module + names[pos];
96 if (!(res = strcmp( ename, name )))
98 WORD ordinal = ordinals[pos];
99 assert( ordinal < exports->NumberOfFunctions );
100 TRACE( "setting %s at %p to %08x\n", name, &functions[ordinal], rva );
101 functions[ordinal] = rva;
104 if (res > 0) max = pos - 1;
111 /***********************************************************************
112 * KERNEL process initialisation routine
114 static BOOL process_attach( HMODULE module )
116 SYSTEM_TIMEOFDAY_INFORMATION ti;
117 RTL_USER_PROCESS_PARAMETERS *params = NtCurrentTeb()->Peb->ProcessParameters;
119 NtQuerySystemInformation( SystemTimeOfDayInformation, &ti, sizeof(ti), NULL );
120 server_start_time = ti.liKeBootTime.QuadPart;
122 /* Setup registry locale information */
123 LOCALE_InitRegistry();
125 /* Setup computer name */
128 /* convert value from server:
129 * + 0 => INVALID_HANDLE_VALUE
130 * + console handle needs to be mapped
132 if (!params->hStdInput)
133 params->hStdInput = INVALID_HANDLE_VALUE;
134 else if (VerifyConsoleIoHandle(console_handle_map(params->hStdInput)))
135 params->hStdInput = console_handle_map(params->hStdInput);
137 if (!params->hStdOutput)
138 params->hStdOutput = INVALID_HANDLE_VALUE;
139 else if (VerifyConsoleIoHandle(console_handle_map(params->hStdOutput)))
140 params->hStdOutput = console_handle_map(params->hStdOutput);
142 if (!params->hStdError)
143 params->hStdError = INVALID_HANDLE_VALUE;
144 else if (VerifyConsoleIoHandle(console_handle_map(params->hStdError)))
145 params->hStdError = console_handle_map(params->hStdError);
147 /* copy process information from ntdll */
148 ENV_CopyStartupInformation();
150 if (!(GetVersion() & 0x80000000))
152 /* Securom checks for this one when version is NT */
153 set_entry_point( module, "FT_Thunk", 0 );
158 /* create the shared heap for broken win95 native dlls */
159 HeapCreate( HEAP_SHARED, 0, 0 );
160 /* setup emulation of protected instructions from 32-bit code */
161 RtlAddVectoredExceptionHandler( TRUE, INSTR_vectored_handler );
165 /* finish the process initialisation for console bits, if needed */
166 __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
168 if (params->ConsoleHandle == (HANDLE)1) /* FIXME */
170 HMODULE mod = GetModuleHandleA(0);
171 if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
174 /* else TODO for DETACHED_PROCESS:
175 * 1/ inherit console + handles
176 * 2/ create std handles, if handles are not inherited
177 * TBD when not using wineserver handles for console handles
180 /* Create 16-bit task */
181 LoadLibrary16( "krnl386.exe" );
183 TASK_CreateMainTask();
187 /***********************************************************************
188 * KERNEL initialisation routine
190 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
194 case DLL_PROCESS_ATTACH:
195 return process_attach( hinst );
196 case DLL_THREAD_ATTACH:
199 case DLL_THREAD_DETACH:
202 case DLL_PROCESS_DETACH:
203 WriteOutProfiles16();
209 /***********************************************************************
210 * MulDiv (KERNEL32.@)
212 * Result of multiplication and division
213 * -1: Overflow occurred or Divisor was 0
215 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
219 if (!nDivisor) return -1;
221 /* We want to deal with a positive divisor to simplify the logic. */
224 nMultiplicand = - nMultiplicand;
225 nDivisor = -nDivisor;
228 /* If the result is positive, we "add" to round. else, we subtract to round. */
229 if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
230 ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
231 ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
233 ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
235 if ((ret > 2147483647) || (ret < -2147483647)) return -1;
240 /******************************************************************************
241 * GetTickCount64 (KERNEL32.@)
243 ULONGLONG WINAPI GetTickCount64(void)
247 NtQuerySystemTime( &now );
248 return (now.QuadPart - server_start_time) / 10000;
252 /***********************************************************************
253 * GetTickCount (KERNEL32.@)
255 * Get the number of milliseconds the system has been running.
261 * The current tick count.
264 * The value returned will wrap around every 2^32 milliseconds.
265 * Under Windows, tick 0 is the moment at which the system is rebooted.
266 * Under Wine, tick 0 begins at the moment the wineserver process is started.
268 DWORD WINAPI GetTickCount(void)
270 return GetTickCount64();