/*- * Copyright 1996-1998 John D. Polstra. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $Id: crt1.c,v 1.1.1.1 1998/03/07 20:27:10 jdp Exp $ */ #ifndef __GNUC__ #error "GCC is needed to compile this file" #endif #include typedef void (*fptr)(void); extern void _fini(void); extern void _init(void); extern int main(int, char **, char **); #ifdef GCRT extern void _mcleanup(void); extern void monstartup(void *, void *); extern int eprol; extern int etext; #endif extern int _DYNAMIC; #pragma weak _DYNAMIC #ifdef __i386__ #define get_rtld_cleanup() \ ({ fptr __value; \ __asm__("movl %%edx,%0" : "=rm"(__value)); \ __value; }) #else #error "This file only supports the i386 architecture" #endif char **environ; char *__progname = ""; void _start(char *arguments, ...) { fptr rtld_cleanup; int argc; char **argv; char **env; rtld_cleanup = get_rtld_cleanup(); argv = &arguments; argc = * (int *) (argv - 1); env = argv + argc + 1; environ = env; if(argc > 0) __progname = argv[0]; if(&_DYNAMIC != 0) atexit(rtld_cleanup); #ifdef GCRT atexit(_mcleanup); #endif atexit(_fini); #ifdef GCRT monstartup(&eprol, &etext); #endif _init(); exit( main(argc, argv, env) ); } #ifdef GCRT __asm__(".text"); __asm__("eprol:"); __asm__(".previous"); #endif