96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
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// =============================================
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// crt1.c
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// _UNICODE for tchar.h, UNICODE for API
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#include <tchar.h>
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define _UNKNOWN_APP 0
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#define _CONSOLE_APP 1
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#define _GUI_APP 2
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#define _MCW_PC 0x00030000 // Precision Control
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#define _PC_24 0x00020000 // 24 bits
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#define _PC_53 0x00010000 // 53 bits
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#define _PC_64 0x00000000 // 64 bits
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#ifdef _UNICODE
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#define __tgetmainargs __wgetmainargs
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#define _tstart _wstart
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#define _tmain wmain
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#define _runtmain _runwmain
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#else
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#define __tgetmainargs __getmainargs
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#define _tstart _start
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#define _tmain main
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#define _runtmain _runmain
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#endif
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typedef struct { int newmode; } _startupinfo;
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int __cdecl __tgetmainargs(int *pargc, _TCHAR ***pargv, _TCHAR ***penv, int globb, _startupinfo*);
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void __cdecl __set_app_type(int apptype);
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unsigned int __cdecl _controlfp(unsigned int new_value, unsigned int mask);
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extern int _tmain(int argc, _TCHAR * argv[], _TCHAR * env[]);
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#include "crtinit.c"
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static int do_main (int argc, _TCHAR * argv[], _TCHAR * env[])
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{
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int retval;
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run_ctors(argc, argv, env);
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retval = _tmain(__argc, __targv, _tenviron);
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run_dtors();
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return retval;
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}
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/* Allow command-line globbing with "int _dowildcard = 1;" in the user source */
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int _dowildcard;
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static LONG WINAPI catch_sig(EXCEPTION_POINTERS *ex)
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{
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return _XcptFilter(ex->ExceptionRecord->ExceptionCode, ex);
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}
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void _tstart(void)
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{
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_startupinfo start_info = {0};
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SetUnhandledExceptionFilter(catch_sig);
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// Sets the current application type
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__set_app_type(_CONSOLE_APP);
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// Set default FP precision to 53 bits (8-byte double)
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// _MCW_PC (Precision control) is not supported on ARM
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#if defined __i386__ || defined __x86_64__
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_controlfp(_PC_53, _MCW_PC);
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#endif
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__tgetmainargs( &__argc, &__targv, &_tenviron, _dowildcard, &start_info);
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exit(do_main(__argc, __targv, _tenviron));
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}
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int _runtmain(int argc, /* as tcc passed in */ char **argv)
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{
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#ifdef UNICODE
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_startupinfo start_info = {0};
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__tgetmainargs(&__argc, &__targv, &_tenviron, _dowildcard, &start_info);
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/* may be wrong when tcc has received wildcards (*.c) */
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if (argc < __argc) {
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__targv += __argc - argc;
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__argc = argc;
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}
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#else
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__argc = argc;
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__targv = argv;
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#endif
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#if defined __i386__ || defined __x86_64__
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_controlfp(_PC_53, _MCW_PC);
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#endif
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return _tmain(__argc, __targv, _tenviron);
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}
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// =============================================
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