ae7c8a2bb8
when using the egcs and gcc-devel ports, along with GCC built from stock
public FSF sources. With out this change, FreeBSD will be removed from
the list of systems GCC 3.0 must be evaluated on before release. With
the effort some of us put into getting FreeBSD on this list, we should
not turn this effort into a waste, else we might not be worth fighting
for in the future. (note that Alpha and IA-64 versions of crt{i,n}.S
are needed)
* Switch from our own crt{begin,in} to those created from GCC's crtstuff.c.
This will allow us to switch to DWARF2 exceptions in the future, along with
staying in sync with any future GCC requirements.
* Break out our ELF branding bits into a seperate file. Currently this
is now included by our crt1.c files (since this functionality was part of
our native crtbegin.c). Later crtbrand.o will be merged in the creation
of crti.o.
104 lines
2.6 KiB
C
104 lines
2.6 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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* $FreeBSD$
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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 <stddef.h>
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#include <stdlib.h>
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#include "crtbrand.c"
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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 && argv[0] != NULL) {
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char *s;
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__progname = argv[0];
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for (s = __progname; *s != '\0'; s++)
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if (*s == '/')
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__progname = s + 1;
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}
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if(&_DYNAMIC != NULL)
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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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