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Diffstat (limited to 'winsup/mingw/crt1.c')
| -rw-r--r-- | winsup/mingw/crt1.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/winsup/mingw/crt1.c b/winsup/mingw/crt1.c deleted file mode 100644 index f91f1da28..000000000 --- a/winsup/mingw/crt1.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * crt1.c - * - * Source code for the startup proceedures used by all programs. This code - * is compiled to make crt1.o, which should be located in the library path. - * - * This code is part of the Mingw32 package. - * - * Contributors: - * Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp> - * Maintained by Mumit Khan <khan@xraylith.wisc.EDU> - * - * THIS SOFTWARE IS NOT COPYRIGHTED - * - * This source code is offered for use in the public domain. You may - * use, modify or distribute it freely. - * - * This code is distributed in the hope that it will be useful but - * WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY - * DISCLAMED. This includes but is not limited to warrenties of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * $Revision$ - * $Author$ - * $Date$ - * - */ - -#include <stdlib.h> -#include <stdio.h> -#include <io.h> -#include <fcntl.h> -#include <process.h> -#include <float.h> -#include <windows.h> -#include <signal.h> - -/* NOTE: The code for initializing the _argv, _argc, and environ variables - * has been moved to a separate .c file which is included in both - * crt1.c and dllcrt1.c. This means changes in the code don't have to - * be manually synchronized, but it does lead to this not-generally- - * a-good-idea use of include. */ -#include "init.c" - -extern int main (int, char **, char **); - -/* - * Must have the correct app type for MSVCRT. - */ - -#ifdef __MSVCRT__ -#define __UNKNOWN_APP 0 -#define __CONSOLE_APP 1 -#define __GUI_APP 2 -__MINGW_IMPORT void __set_app_type(int); -#endif /* __MSVCRT__ */ - -/* - * Setup the default file handles to have the _CRT_fmode mode, as well as - * any new files created by the user. - */ -extern unsigned int _CRT_fmode; - -static void -_mingw32_init_fmode () -{ - /* Don't set the file mode if the user hasn't set any value for it. */ - if (_CRT_fmode) - { - _fmode = _CRT_fmode; - - /* - * This overrides the default file mode settings for stdin, - * stdout and stderr. At first I thought you would have to - * test with isatty, but it seems that the DOS console at - * least is smart enough to handle _O_BINARY stdout and - * still display correctly. - */ - if (stdin) - { - _setmode (_fileno (stdin), _CRT_fmode); - } - if (stdout) - { - _setmode (_fileno (stdout), _CRT_fmode); - } - if (stderr) - { - _setmode (_fileno (stderr), _CRT_fmode); - } - } -} - -/* This function will be called when a trap occurs. Thanks to Jacob - Navia for his contribution. */ -static CALLBACK long -_gnu_exception_handler (EXCEPTION_POINTERS * exception_data) -{ - void (*old_handler) (int); - long action = EXCEPTION_CONTINUE_SEARCH; - int reset_fpu = 0; - - switch (exception_data->ExceptionRecord->ExceptionCode) - { - case EXCEPTION_ACCESS_VIOLATION: - /* test if the user has set SIGSEGV */ - old_handler = signal (SIGSEGV, SIG_DFL); - if (old_handler == SIG_IGN) - { - /* this is undefined if the signal was raised by anything other - than raise (). */ - signal (SIGSEGV, SIG_IGN); - action = EXCEPTION_CONTINUE_EXECUTION; - } - else if (old_handler != SIG_DFL) - { - /* This means 'old' is a user defined function. Call it */ - (*old_handler) (SIGSEGV); - action = EXCEPTION_CONTINUE_EXECUTION; - } - break; - - case EXCEPTION_FLT_INVALID_OPERATION: - case EXCEPTION_FLT_DIVIDE_BY_ZERO: - case EXCEPTION_FLT_DENORMAL_OPERAND: - case EXCEPTION_FLT_OVERFLOW: - case EXCEPTION_FLT_UNDERFLOW: - case EXCEPTION_FLT_INEXACT_RESULT: - reset_fpu = 1; - /* fall through. */ - - case EXCEPTION_INT_DIVIDE_BY_ZERO: - /* test if the user has set SIGFPE */ - old_handler = signal (SIGFPE, SIG_DFL); - if (old_handler == SIG_IGN) - { - signal (SIGFPE, SIG_IGN); - if (reset_fpu) - _fpreset (); - action = EXCEPTION_CONTINUE_EXECUTION; - } - else if (old_handler != SIG_DFL) - { - /* This means 'old' is a user defined function. Call it */ - (*old_handler) (SIGFPE); - action = EXCEPTION_CONTINUE_EXECUTION; - } - break; - - default: - break; - } - return action; -} - -/* - * The function mainCRTStartup is the entry point for all console programs. - */ -static int -__mingw_CRTStartup () -{ - int nRet; - - /* - * Set up the top-level exception handler so that signal handling - * works as expected. The mapping between ANSI/POSIX signals and - * Win32 SE is not 1-to-1, so caveat emptore. - * - */ - SetUnhandledExceptionFilter (_gnu_exception_handler); - - /* - * Initialize floating point unit. - */ - _fpreset (); /* Supplied by the runtime library. */ - - /* - * Set up __argc, __argv and _environ. - */ - _mingw32_init_mainargs (); - - /* - * Sets the default file mode for stdin, stdout and stderr, as well - * as files later opened by the user, to _CRT_fmode. - * NOTE: DLLs don't do this because that would be rude! - */ - _mingw32_init_fmode (); - - /* - * Call the main function. If the user does not supply one - * the one in the 'libmingw32.a' library will be linked in, and - * that one calls WinMain. See main.c in the 'lib' dir - * for more details. - */ - nRet = main (_argc, _argv, environ); - - /* - * Perform exit processing for the C library. This means - * flushing output and calling 'atexit' registered functions. - */ - _cexit (); - - ExitProcess (nRet); - - return 0; -} - -/* - * The function mainCRTStartup is the entry point for all console programs. - */ -int -mainCRTStartup () -{ -#ifdef __MSVCRT__ - __set_app_type (__CONSOLE_APP); -#endif - __mingw_CRTStartup (); - return 0; -} - -/* - * For now the GUI startup function is the same as the console one. - * This simply gets rid of the annoying warning about not being able - * to find WinMainCRTStartup when linking GUI applications. - */ -int -WinMainCRTStartup () -{ -#ifdef __MSVCRT__ - __set_app_type (__GUI_APP); -#endif - __mingw_CRTStartup (); -} - |