reactos/sdk/lib/crt/startup/crtexe.c
2018-08-27 11:09:28 +02:00

442 lines
11 KiB
C

/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the w64 mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#undef CRTDLL
#ifndef _DLL
#define _DLL
#endif
#define SPECIAL_CRTEXE
#include <oscalls.h>
#include <internal.h>
#include <process.h>
#include <signal.h>
#include <math.h>
#include <stdlib.h>
#include <tchar.h>
#include <sect_attribs.h>
#include <locale.h>
#ifdef _MBCS
#include <mbstring.h>
#endif
#ifndef __winitenv
extern wchar_t *** __MINGW_IMP_SYMBOL(__winitenv);
#define __winitenv (* __MINGW_IMP_SYMBOL(__winitenv))
#endif
#ifndef __initenv
extern char *** __MINGW_IMP_SYMBOL(__initenv);
#define __initenv (* __MINGW_IMP_SYMBOL(__initenv))
#endif
/* Hack, for bug in ld. Will be removed soon. */
#if defined(__GNUC__)
#define __ImageBase __MINGW_LSYMBOL(_image_base__)
#endif
/* This symbol is defined by ld. */
extern IMAGE_DOS_HEADER __ImageBase;
extern void __cdecl _fpreset (void);
#define SPACECHAR _T(' ')
#define DQUOTECHAR _T('\"')
extern int * __MINGW_IMP_SYMBOL(_fmode);
extern int * __MINGW_IMP_SYMBOL(_commode);
#undef _fmode
extern int _fmode;
extern int * __MINGW_IMP_SYMBOL(_commode);
#define _commode (* __MINGW_IMP_SYMBOL(_commode))
extern int _dowildcard;
extern _CRTIMP void __cdecl _initterm(_PVFV *, _PVFV *);
static int __cdecl check_managed_app (void);
extern _CRTALLOC(".CRT$XIA") _PIFV __xi_a[];
extern _CRTALLOC(".CRT$XIZ") _PIFV __xi_z[];
extern _CRTALLOC(".CRT$XCA") _PVFV __xc_a[];
extern _CRTALLOC(".CRT$XCZ") _PVFV __xc_z[];
/* TLS initialization hook. */
extern const PIMAGE_TLS_CALLBACK __dyn_tls_init_callback;
extern _PVFV *__onexitbegin;
extern _PVFV *__onexitend;
extern int mingw_app_type;
HINSTANCE __mingw_winmain_hInstance;
_TCHAR *__mingw_winmain_lpCmdLine;
DWORD __mingw_winmain_nShowCmd;
static int argc;
extern void __main(void);
#ifdef WPRFLAG
static wchar_t **argv;
static wchar_t **envp;
#else
static char **argv;
static char **envp;
#endif
static int argret;
static int mainret=0;
static int managedapp;
static int has_cctor = 0;
static _startupinfo startinfo;
extern LPTOP_LEVEL_EXCEPTION_FILTER __mingw_oldexcpt_handler;
extern void _pei386_runtime_relocator (void);
long CALLBACK _gnu_exception_handler (EXCEPTION_POINTERS * exception_data);
#ifdef WPRFLAG
static void duplicate_ppstrings (int ac, wchar_t ***av);
#else
static void duplicate_ppstrings (int ac, char ***av);
#endif
static int __cdecl pre_c_init (void);
static void __cdecl pre_cpp_init (void);
static void __cdecl __mingw_prepare_except_for_msvcr80_and_higher (void);
_CRTALLOC(".CRT$XIAA") _PIFV mingw_pcinit = pre_c_init;
_CRTALLOC(".CRT$XCAA") _PVFV mingw_pcppinit = pre_cpp_init;
extern int _MINGW_INSTALL_DEBUG_MATHERR;
static int __cdecl
pre_c_init (void)
{
managedapp = check_managed_app ();
if (mingw_app_type)
__set_app_type(_GUI_APP);
else
__set_app_type (_CONSOLE_APP);
__onexitbegin = __onexitend = (_PVFV *) _encode_pointer ((_PVFV *)(-1));
* __MINGW_IMP_SYMBOL(_fmode) = _fmode;
* __MINGW_IMP_SYMBOL(_commode) = _commode;
#ifdef WPRFLAG
_wsetargv();
#else
_setargv();
#endif
if (_MINGW_INSTALL_DEBUG_MATHERR == 1)
{
__setusermatherr (_matherr);
}
#ifndef __clang__ /* FIXME: CORE-14042 */
if (__globallocalestatus == -1)
{
}
#endif
return 0;
}
static void __cdecl
pre_cpp_init (void)
{
startinfo.newmode = _newmode;
#ifdef WPRFLAG
argret = __wgetmainargs(&argc,&argv,&envp,_dowildcard,&startinfo);
#else
argret = __getmainargs(&argc,&argv,&envp,_dowildcard,&startinfo);
#endif
}
static int __cdecl __tmainCRTStartup (void);
int __cdecl WinMainCRTStartup (void);
int __cdecl WinMainCRTStartup (void)
{
int ret = 255;
#ifdef __SEH__
asm ("\t.l_startw:\n"
"\t.seh_handler __C_specific_handler, @except\n"
"\t.seh_handlerdata\n"
"\t.long 1\n"
"\t.rva .l_startw, .l_endw, _gnu_exception_handler ,.l_endw\n"
"\t.text"
);
#endif
mingw_app_type = 1;
__security_init_cookie ();
ret = __tmainCRTStartup ();
#ifdef __SEH__
asm ("\tnop\n"
"\t.l_endw: nop\n");
#endif
return ret;
}
int __cdecl mainCRTStartup (void);
#ifdef _WIN64
int __mingw_init_ehandler (void);
#endif
int __cdecl mainCRTStartup (void)
{
int ret = 255;
#ifdef __SEH__
asm ("\t.l_start:\n"
"\t.seh_handler __C_specific_handler, @except\n"
"\t.seh_handlerdata\n"
"\t.long 1\n"
"\t.rva .l_start, .l_end, _gnu_exception_handler ,.l_end\n"
"\t.text"
);
#endif
mingw_app_type = 0;
__security_init_cookie ();
ret = __tmainCRTStartup ();
#ifdef __SEH__
asm ("\tnop\n"
"\t.l_end: nop\n");
#endif
return ret;
}
static
__declspec(noinline)
int __cdecl
__tmainCRTStartup (void)
{
_TCHAR *lpszCommandLine = NULL;
STARTUPINFO StartupInfo;
WINBOOL inDoubleQuote = FALSE;
memset (&StartupInfo, 0, sizeof (STARTUPINFO));
#ifndef _WIN64
/* We need to make sure that this function is build with frame-pointer
and that we align the stack to 16 bytes for the sake of SSE ops in main
or in functions inlined into main. */
lpszCommandLine = (_TCHAR *) alloca (32);
memset (lpszCommandLine, 0xcc, 32);
#ifdef __GNUC__
asm __volatile__ ("andl $-16, %%esp" : : : "%esp");
#endif
#endif
if (mingw_app_type)
GetStartupInfo (&StartupInfo);
{
void *lock_free = NULL;
void *fiberid = ((PNT_TIB)NtCurrentTeb())->StackBase;
int nested = FALSE;
while((lock_free = InterlockedCompareExchangePointer ((volatile PVOID *) &__native_startup_lock,
fiberid, 0)) != 0)
{
if (lock_free == fiberid)
{
nested = TRUE;
break;
}
Sleep(1000);
}
if (__native_startup_state == __initializing)
{
_amsg_exit (31);
}
else if (__native_startup_state == __uninitialized)
{
__native_startup_state = __initializing;
_initterm ((_PVFV *)(void *)__xi_a, (_PVFV *)(void *) __xi_z);
}
else
has_cctor = 1;
if (__native_startup_state == __initializing)
{
_initterm (__xc_a, __xc_z);
__native_startup_state = __initialized;
}
_ASSERTE(__native_startup_state == __initialized);
if (! nested)
(VOID)InterlockedExchangePointer ((volatile PVOID *) &__native_startup_lock, 0);
if (__dyn_tls_init_callback != NULL)
__dyn_tls_init_callback (NULL, DLL_THREAD_ATTACH, NULL);
_pei386_runtime_relocator ();
__mingw_oldexcpt_handler = SetUnhandledExceptionFilter (_gnu_exception_handler);
#ifdef _WIN64
__mingw_init_ehandler ();
#endif
__mingw_prepare_except_for_msvcr80_and_higher ();
_fpreset ();
if (mingw_app_type)
{
#ifdef WPRFLAG
lpszCommandLine = (_TCHAR *) _wcmdln;
#else
lpszCommandLine = (char *) _acmdln;
#endif
while (*lpszCommandLine > SPACECHAR || (*lpszCommandLine && inDoubleQuote))
{
if (*lpszCommandLine == DQUOTECHAR)
inDoubleQuote = !inDoubleQuote;
#ifdef _MBCS
if (_ismbblead (*lpszCommandLine))
{
if (lpszCommandLine) /* FIXME: Why this check? Should I check for *lpszCommandLine != 0 too? */
lpszCommandLine++;
}
#endif
++lpszCommandLine;
}
while (*lpszCommandLine && (*lpszCommandLine <= SPACECHAR))
lpszCommandLine++;
__mingw_winmain_hInstance = (HINSTANCE) &__ImageBase;
__mingw_winmain_lpCmdLine = lpszCommandLine;
__mingw_winmain_nShowCmd = StartupInfo.dwFlags & STARTF_USESHOWWINDOW ?
StartupInfo.wShowWindow : SW_SHOWDEFAULT;
}
duplicate_ppstrings (argc, &argv);
__main ();
#ifdef WPRFLAG
__winitenv = envp;
/* C++ initialization.
gcc inserts this call automatically for a function called main, but not for wmain. */
mainret = wmain (argc, argv, envp);
#else
__initenv = envp;
mainret = main (argc, argv, envp);
#endif
if (!managedapp)
exit (mainret);
if (has_cctor == 0)
_cexit ();
}
return mainret;
}
extern int mingw_initltsdrot_force;
extern int mingw_initltsdyn_force;
extern int mingw_initltssuo_force;
extern int mingw_initcharmax;
static int __cdecl
check_managed_app (void)
{
PIMAGE_DOS_HEADER pDOSHeader;
PIMAGE_NT_HEADERS pPEHeader;
PIMAGE_OPTIONAL_HEADER32 pNTHeader32;
PIMAGE_OPTIONAL_HEADER64 pNTHeader64;
/* Force to be linked. */
mingw_initltsdrot_force=1;
mingw_initltsdyn_force=1;
mingw_initltssuo_force=1;
mingw_initcharmax=1;
pDOSHeader = (PIMAGE_DOS_HEADER) &__ImageBase;
if (pDOSHeader->e_magic != IMAGE_DOS_SIGNATURE)
return 0;
pPEHeader = (PIMAGE_NT_HEADERS)((char *)pDOSHeader + pDOSHeader->e_lfanew);
if (pPEHeader->Signature != IMAGE_NT_SIGNATURE)
return 0;
pNTHeader32 = (PIMAGE_OPTIONAL_HEADER32) &pPEHeader->OptionalHeader;
switch (pNTHeader32->Magic)
{
case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
if (pNTHeader32->NumberOfRvaAndSizes <= IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR)
return 0;
return !! pNTHeader32->DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress;
case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
pNTHeader64 = (PIMAGE_OPTIONAL_HEADER64)pNTHeader32;
if (pNTHeader64->NumberOfRvaAndSizes <= IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR)
return 0;
return !! pNTHeader64->DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress;
}
return 0;
}
#ifdef WPRFLAG
static size_t wbytelen(const wchar_t *p)
{
size_t ret = 1;
while (*p!=0) {
ret++,++p;
}
return ret*2;
}
static void duplicate_ppstrings (int ac, wchar_t ***av)
{
wchar_t **avl;
int i;
wchar_t **n = (wchar_t **) malloc (sizeof (wchar_t *) * (ac + 1));
avl=*av;
for (i=0; i < ac; i++)
{
size_t l = wbytelen (avl[i]);
n[i] = (wchar_t *) malloc (l);
memcpy (n[i], avl[i], l);
}
n[i] = NULL;
*av = n;
}
#else
static void duplicate_ppstrings (int ac, char ***av)
{
char **avl;
int i;
char **n = (char **) malloc (sizeof (char *) * (ac + 1));
avl=*av;
for (i=0; i < ac; i++)
{
size_t l = strlen (avl[i]) + 1;
n[i] = (char *) malloc (l);
memcpy (n[i], avl[i], l);
}
n[i] = NULL;
*av = n;
}
#endif
#ifdef __MINGW_SHOW_INVALID_PARAMETER_EXCEPTION
#define __UNUSED_PARAM_1(x) x
#else
#define __UNUSED_PARAM_1 __UNUSED_PARAM
#endif
static void __cdecl
__mingw_invalidParameterHandler (const wchar_t * __UNUSED_PARAM_1(expression),
const wchar_t * __UNUSED_PARAM_1(function),
const wchar_t * __UNUSED_PARAM_1(file),
unsigned int __UNUSED_PARAM_1(line),
uintptr_t __UNUSED_PARAM(pReserved))
{
#ifdef __MINGW_SHOW_INVALID_PARAMETER_EXCEPTION
wprintf(L"Invalid parameter detected in function %s. File: %s Line: %u\n", function, file, line);
wprintf(L"Expression: %s\n", expression);
#endif
}
HANDLE __mingw_get_msvcrt_handle(void);
static void __cdecl
__mingw_prepare_except_for_msvcr80_and_higher (void)
{
_invalid_parameter_handler (*fIPH)(_invalid_parameter_handler) = NULL;
fIPH = (void*)GetProcAddress (__mingw_get_msvcrt_handle(), "_set_invalid_parameter_handler");
if (fIPH)
(*fIPH)(__mingw_invalidParameterHandler);
}