mirror of
https://github.com/frida/tinycc
synced 2024-12-22 13:12:34 +03:00
c16dadbb97
we can register a top-level exception filter which does nothing else than call into _XcptFilter (provided by the default C runtime environment) and signal handlers for the few POSIX signals that Windows can handle start working (that includes e.g. SEGV).
86 lines
2.2 KiB
C
86 lines
2.2 KiB
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 <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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void __set_app_type(int);
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void _controlfp(unsigned a, unsigned b);
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#ifdef _UNICODE
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#define __tgetmainargs __wgetmainargs
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#define _twinstart _wwinstart
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#define _runtwinmain _runwwinmain
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int APIENTRY wWinMain(HINSTANCE, HINSTANCE, LPWSTR, int);
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#else
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#define __tgetmainargs __getmainargs
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#define _twinstart _winstart
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#define _runtwinmain _runwinmain
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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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#ifdef __x86_64__
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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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#endif
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static int go_winmain(TCHAR *arg1)
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{
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STARTUPINFO si;
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_TCHAR *szCmd, *p;
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int fShow;
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GetStartupInfo(&si);
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if (si.dwFlags & STARTF_USESHOWWINDOW)
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fShow = si.wShowWindow;
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else
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fShow = SW_SHOWDEFAULT;
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szCmd = NULL, p = GetCommandLine();
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if (arg1)
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szCmd = _tcsstr(p, arg1);
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if (NULL == szCmd)
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szCmd = _tcsdup(__T(""));
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else if (szCmd > p && szCmd[-1] == __T('"'))
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--szCmd;
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#if defined __i386__ || defined __x86_64__
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_controlfp(0x10000, 0x30000);
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#endif
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return _tWinMain(GetModuleHandle(NULL), NULL, szCmd, fShow);
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}
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int _twinstart(void)
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{
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__TRY__
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#ifdef __x86_64__
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SetUnhandledExceptionFilter(catch_sig);
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#endif
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_startupinfo start_info_con = {0};
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__set_app_type(__GUI_APP);
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__tgetmainargs(&__argc, &__targv, &_tenviron, 0, &start_info_con);
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exit(go_winmain(__argc > 1 ? __targv[1] : NULL));
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}
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int _runtwinmain(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, 0, &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, __argc = argc;
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#else
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__argc = argc, __targv = argv;
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#endif
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return go_winmain(__argc > 1 ? __targv[1] : NULL);
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}
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