5584f22bb3
the executable file, so it will work for both a.out and ELF format files. I have split the object format specific code into separate source files. It's cleaner than it was before, but it's still pretty crufty. Don't cheat on your make world for this update. A lot of things have to be rebuilt for it to work, including the compiler and all of the profiled libraries.
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*-
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* Copyright 1996-1998 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: crt1.c,v 1.1.1.1 1998/03/07 20:27:10 jdp Exp $
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*/
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#ifndef __GNUC__
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#error "GCC is needed to compile this file"
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#endif
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#include <stdlib.h>
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typedef void (*fptr)(void);
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extern void _fini(void);
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extern void _init(void);
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extern int main(int, char **, char **);
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#ifdef GCRT
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extern void _mcleanup(void);
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extern void monstartup(void *, void *);
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extern int eprol;
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extern int etext;
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#endif
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extern int _DYNAMIC;
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#pragma weak _DYNAMIC
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#ifdef __i386__
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#define get_rtld_cleanup() \
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({ fptr __value; \
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__asm__("movl %%edx,%0" : "=rm"(__value)); \
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__value; })
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#else
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#error "This file only supports the i386 architecture"
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#endif
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char **environ;
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char *__progname = "";
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void
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_start(char *arguments, ...)
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{
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fptr rtld_cleanup;
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int argc;
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char **argv;
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char **env;
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rtld_cleanup = get_rtld_cleanup();
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argv = &arguments;
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argc = * (int *) (argv - 1);
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env = argv + argc + 1;
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environ = env;
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if(argc > 0)
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__progname = argv[0];
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if(&_DYNAMIC != 0)
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atexit(rtld_cleanup);
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#ifdef GCRT
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atexit(_mcleanup);
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#endif
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atexit(_fini);
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#ifdef GCRT
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monstartup(&eprol, &etext);
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#endif
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_init();
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exit( main(argc, argv, env) );
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}
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#ifdef GCRT
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__asm__(".text");
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__asm__("eprol:");
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__asm__(".previous");
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#endif
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