mirror of
https://github.com/reactos/reactos.git
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443 lines
11 KiB
C
443 lines
11 KiB
C
/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the w64 mingw-runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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#define SPECIAL_CRTEXE
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#include <oscalls.h>
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#include <internal.h>
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#include <process.h>
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#include <signal.h>
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#include <math.h>
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#include <stdlib.h>
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#include <tchar.h>
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#include <sect_attribs.h>
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#include <locale.h>
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#ifdef _MBCS
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#include <mbstring.h>
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#endif
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/* Special handling for ARM & ARM64, __winitenv & __initenv aren't present there. */
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#if !defined(__arm__) && !defined(__aarch64__)
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_CRTIMP extern wchar_t** __winitenv;
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_CRTIMP extern char** __initenv;
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#endif
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/* Hack, for bug in ld. Will be removed soon. */
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#if defined(__GNUC__)
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#define __ImageBase __MINGW_LSYMBOL(_image_base__)
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#endif
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/* This symbol is defined by ld. */
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extern IMAGE_DOS_HEADER __ImageBase;
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extern void __cdecl _fpreset (void);
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#define SPACECHAR _T(' ')
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#define DQUOTECHAR _T('\"')
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extern int _dowildcard;
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extern _CRTIMP void __cdecl _initterm(_PVFV *, _PVFV *);
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static int __cdecl check_managed_app (void);
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extern _CRTALLOC(".CRT$XIA") _PIFV __xi_a[];
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extern _CRTALLOC(".CRT$XIZ") _PIFV __xi_z[];
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extern _CRTALLOC(".CRT$XCA") _PVFV __xc_a[];
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extern _CRTALLOC(".CRT$XCZ") _PVFV __xc_z[];
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/* TLS initialization hook. */
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extern const PIMAGE_TLS_CALLBACK __dyn_tls_init_callback;
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extern _PVFV *__onexitbegin;
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extern _PVFV *__onexitend;
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extern int mingw_app_type;
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HINSTANCE __mingw_winmain_hInstance;
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_TCHAR *__mingw_winmain_lpCmdLine;
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DWORD __mingw_winmain_nShowCmd;
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static int argc;
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extern void __main(void);
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#ifdef WPRFLAG
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static wchar_t **argv;
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static wchar_t **envp;
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#else
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static char **argv;
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static char **envp;
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#endif
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static int argret;
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static int mainret=0;
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static int managedapp;
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static int has_cctor = 0;
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static _startupinfo startinfo;
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extern LPTOP_LEVEL_EXCEPTION_FILTER __mingw_oldexcpt_handler;
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extern void _pei386_runtime_relocator (void);
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long CALLBACK _gnu_exception_handler (EXCEPTION_POINTERS * exception_data);
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#ifdef WPRFLAG
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static void duplicate_ppstrings (int ac, wchar_t ***av);
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#else
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static void duplicate_ppstrings (int ac, char ***av);
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#endif
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static int __cdecl pre_c_init (void);
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static void __cdecl pre_cpp_init (void);
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static void __cdecl __mingw_prepare_except_for_msvcr80_and_higher (void);
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_CRTALLOC(".CRT$XIAA") _PIFV mingw_pcinit = pre_c_init;
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_CRTALLOC(".CRT$XCAA") _PVFV mingw_pcppinit = pre_cpp_init;
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extern int _MINGW_INSTALL_DEBUG_MATHERR;
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#ifdef __GNUC__
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extern void __do_global_dtors(void);
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#endif
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static int __cdecl
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pre_c_init (void)
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{
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managedapp = check_managed_app ();
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if (mingw_app_type)
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__set_app_type(_GUI_APP);
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else
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__set_app_type (_CONSOLE_APP);
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__onexitbegin = __onexitend = (_PVFV *)(-1);
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#ifdef WPRFLAG
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_wsetargv();
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#else
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_setargv();
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#endif
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if (_MINGW_INSTALL_DEBUG_MATHERR == 1)
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{
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__setusermatherr (_matherr);
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}
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#ifndef __clang__ /* FIXME: CORE-14042 */
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if (__globallocalestatus == -1)
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{
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}
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#endif
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return 0;
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}
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static void __cdecl
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pre_cpp_init (void)
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{
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startinfo.newmode = _newmode;
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#ifdef WPRFLAG
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argret = __wgetmainargs(&argc,&argv,&envp,_dowildcard,&startinfo);
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#else
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argret = __getmainargs(&argc,&argv,&envp,_dowildcard,&startinfo);
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#endif
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}
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static int __cdecl __tmainCRTStartup (void);
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int __cdecl WinMainCRTStartup (void);
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int __cdecl WinMainCRTStartup (void)
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{
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int ret = 255;
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#ifdef __SEH__
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asm ("\t.l_startw:\n"
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"\t.seh_handler __C_specific_handler, @except\n"
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"\t.seh_handlerdata\n"
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"\t.long 1\n"
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"\t.rva .l_startw, .l_endw, _gnu_exception_handler ,.l_endw\n"
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"\t.text"
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);
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#endif
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mingw_app_type = 1;
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__security_init_cookie ();
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ret = __tmainCRTStartup ();
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#ifdef __SEH__
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asm ("\tnop\n"
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"\t.l_endw: nop\n");
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#endif
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return ret;
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}
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int __cdecl mainCRTStartup (void);
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BOOL crt_process_init(void);
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#ifdef _WIN64
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int __mingw_init_ehandler (void);
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#endif
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int __cdecl mainCRTStartup (void)
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{
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int ret = 255;
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#ifndef _DLL
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if (!crt_process_init())
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{
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return -1;
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}
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#endif
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#ifdef __SEH__
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asm ("\t.l_start:\n"
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"\t.seh_handler __C_specific_handler, @except\n"
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"\t.seh_handlerdata\n"
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"\t.long 1\n"
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"\t.rva .l_start, .l_end, _gnu_exception_handler ,.l_end\n"
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"\t.text"
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);
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#endif
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mingw_app_type = 0;
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__security_init_cookie ();
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ret = __tmainCRTStartup ();
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#ifdef __SEH__
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asm ("\tnop\n"
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"\t.l_end: nop\n");
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#endif
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return ret;
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}
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static
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__declspec(noinline)
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int __cdecl
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__tmainCRTStartup (void)
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{
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_TCHAR *lpszCommandLine = NULL;
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STARTUPINFO StartupInfo;
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WINBOOL inDoubleQuote = FALSE;
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memset (&StartupInfo, 0, sizeof (STARTUPINFO));
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#ifndef _WIN64
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/* We need to make sure that this function is build with frame-pointer
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and that we align the stack to 16 bytes for the sake of SSE ops in main
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or in functions inlined into main. */
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lpszCommandLine = (_TCHAR *) alloca (32);
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memset (lpszCommandLine, 0xcc, 32);
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#ifdef __GNUC__
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asm __volatile__ ("andl $-16, %%esp" : : : "%esp");
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#endif
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#endif
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if (mingw_app_type)
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GetStartupInfo (&StartupInfo);
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{
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void *lock_free = NULL;
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void *fiberid = ((PNT_TIB)NtCurrentTeb())->StackBase;
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int nested = FALSE;
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while((lock_free = InterlockedCompareExchangePointer ((volatile PVOID *) &__native_startup_lock,
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fiberid, 0)) != 0)
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{
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if (lock_free == fiberid)
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{
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nested = TRUE;
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break;
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}
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Sleep(1000);
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}
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if (__native_startup_state == __initializing)
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{
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_amsg_exit (31);
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}
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else if (__native_startup_state == __uninitialized)
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{
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__native_startup_state = __initializing;
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_initterm ((_PVFV *)(void *)__xi_a, (_PVFV *)(void *) __xi_z);
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}
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else
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has_cctor = 1;
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if (__native_startup_state == __initializing)
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{
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_initterm (__xc_a, __xc_z);
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__native_startup_state = __initialized;
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}
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_ASSERTE(__native_startup_state == __initialized);
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if (! nested)
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(VOID)InterlockedExchangePointer ((volatile PVOID *) &__native_startup_lock, 0);
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if (__dyn_tls_init_callback != NULL)
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__dyn_tls_init_callback (NULL, DLL_THREAD_ATTACH, NULL);
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_pei386_runtime_relocator ();
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__mingw_oldexcpt_handler = SetUnhandledExceptionFilter (_gnu_exception_handler);
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#ifdef _WIN64
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__mingw_init_ehandler ();
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#endif
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__mingw_prepare_except_for_msvcr80_and_higher ();
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_fpreset ();
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if (mingw_app_type)
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{
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#ifdef WPRFLAG
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lpszCommandLine = (_TCHAR *) _wcmdln;
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#else
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lpszCommandLine = (char *) _acmdln;
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#endif
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while (*lpszCommandLine > SPACECHAR || (*lpszCommandLine && inDoubleQuote))
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{
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if (*lpszCommandLine == DQUOTECHAR)
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inDoubleQuote = !inDoubleQuote;
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#ifdef _MBCS
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if (_ismbblead (*lpszCommandLine))
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{
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if (lpszCommandLine) /* FIXME: Why this check? Should I check for *lpszCommandLine != 0 too? */
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lpszCommandLine++;
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}
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#endif
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++lpszCommandLine;
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}
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while (*lpszCommandLine && (*lpszCommandLine <= SPACECHAR))
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lpszCommandLine++;
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__mingw_winmain_hInstance = (HINSTANCE) &__ImageBase;
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__mingw_winmain_lpCmdLine = lpszCommandLine;
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__mingw_winmain_nShowCmd = StartupInfo.dwFlags & STARTF_USESHOWWINDOW ?
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StartupInfo.wShowWindow : SW_SHOWDEFAULT;
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}
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duplicate_ppstrings (argc, &argv);
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__main ();
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#ifdef WPRFLAG
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#if !defined(__arm__) && !defined(__aarch64__)
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__winitenv = envp;
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#endif
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/* C++ initialization.
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gcc inserts this call automatically for a function called main, but not for wmain. */
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mainret = wmain (argc, argv, envp);
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#else
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#if !defined(__arm__) && !defined(__aarch64__)
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__initenv = envp;
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#endif
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mainret = main (argc, argv, envp);
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#endif
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#ifdef __GNUC__
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__do_global_dtors();
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#endif
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if (!managedapp)
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exit (mainret);
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if (has_cctor == 0)
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_cexit ();
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}
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return mainret;
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}
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extern int mingw_initltsdrot_force;
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extern int mingw_initltsdyn_force;
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extern int mingw_initltssuo_force;
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extern int mingw_initcharmax;
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static int __cdecl
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check_managed_app (void)
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{
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PIMAGE_DOS_HEADER pDOSHeader;
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PIMAGE_NT_HEADERS pPEHeader;
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PIMAGE_OPTIONAL_HEADER32 pNTHeader32;
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PIMAGE_OPTIONAL_HEADER64 pNTHeader64;
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/* Force to be linked. */
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mingw_initltsdrot_force=1;
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mingw_initltsdyn_force=1;
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mingw_initltssuo_force=1;
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mingw_initcharmax=1;
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pDOSHeader = (PIMAGE_DOS_HEADER) &__ImageBase;
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if (pDOSHeader->e_magic != IMAGE_DOS_SIGNATURE)
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return 0;
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pPEHeader = (PIMAGE_NT_HEADERS)((char *)pDOSHeader + pDOSHeader->e_lfanew);
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if (pPEHeader->Signature != IMAGE_NT_SIGNATURE)
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return 0;
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pNTHeader32 = (PIMAGE_OPTIONAL_HEADER32) &pPEHeader->OptionalHeader;
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switch (pNTHeader32->Magic)
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{
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case IMAGE_NT_OPTIONAL_HDR32_MAGIC:
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if (pNTHeader32->NumberOfRvaAndSizes <= IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR)
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return 0;
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return !! pNTHeader32->DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress;
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case IMAGE_NT_OPTIONAL_HDR64_MAGIC:
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pNTHeader64 = (PIMAGE_OPTIONAL_HEADER64)pNTHeader32;
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if (pNTHeader64->NumberOfRvaAndSizes <= IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR)
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return 0;
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return !! pNTHeader64->DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR].VirtualAddress;
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}
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return 0;
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}
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#ifdef WPRFLAG
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static size_t wbytelen(const wchar_t *p)
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{
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size_t ret = 1;
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while (*p!=0) {
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ret++,++p;
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}
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return ret*2;
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}
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static void duplicate_ppstrings (int ac, wchar_t ***av)
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{
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wchar_t **avl;
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int i;
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wchar_t **n = (wchar_t **) malloc (sizeof (wchar_t *) * (ac + 1));
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avl=*av;
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for (i=0; i < ac; i++)
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{
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size_t l = wbytelen (avl[i]);
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n[i] = (wchar_t *) malloc (l);
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memcpy (n[i], avl[i], l);
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}
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n[i] = NULL;
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*av = n;
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}
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#else
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static void duplicate_ppstrings (int ac, char ***av)
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{
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char **avl;
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int i;
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char **n = (char **) malloc (sizeof (char *) * (ac + 1));
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avl=*av;
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for (i=0; i < ac; i++)
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{
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size_t l = strlen (avl[i]) + 1;
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n[i] = (char *) malloc (l);
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memcpy (n[i], avl[i], l);
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}
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n[i] = NULL;
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*av = n;
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}
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#endif
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#ifdef __MINGW_SHOW_INVALID_PARAMETER_EXCEPTION
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#define __UNUSED_PARAM_1(x) x
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#else
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#define __UNUSED_PARAM_1 __UNUSED_PARAM
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#endif
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static void __cdecl
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__mingw_invalidParameterHandler (const wchar_t * __UNUSED_PARAM_1(expression),
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const wchar_t * __UNUSED_PARAM_1(function),
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const wchar_t * __UNUSED_PARAM_1(file),
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unsigned int __UNUSED_PARAM_1(line),
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uintptr_t __UNUSED_PARAM(pReserved))
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{
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#ifdef __MINGW_SHOW_INVALID_PARAMETER_EXCEPTION
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wprintf(L"Invalid parameter detected in function %s. File: %s Line: %u\n", function, file, line);
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wprintf(L"Expression: %s\n", expression);
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#endif
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}
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HANDLE __mingw_get_msvcrt_handle(void);
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static void __cdecl
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__mingw_prepare_except_for_msvcr80_and_higher (void)
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{
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_invalid_parameter_handler (*fIPH)(_invalid_parameter_handler) = NULL;
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fIPH = (void*)GetProcAddress (__mingw_get_msvcrt_handle(), "_set_invalid_parameter_handler");
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if (fIPH)
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(*fIPH)(__mingw_invalidParameterHandler);
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}
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