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_start() needed to be written in assembly. See crt1.S.

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marcel 2003-07-14 03:05:42 +00:00
parent 2b51f3fe16
commit 493b9af445
1 changed files with 0 additions and 124 deletions
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lib/csu/ia64/crt1.c
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@ -1,124 +0,0 @@
/* LINTLIBRARY */
/*-
* Copyright 1996-1998 John D. Polstra.
* All rights reserved.
* Copyright (c) 1995 Christopher G. Demetriou
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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.
*/
#ifndef lint
#ifndef __GNUC__
#error "GCC is needed to compile this file"
#endif
#endif /* lint */
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
struct Struct_Obj_Entry;
struct ps_strings;
extern int _DYNAMIC;
#pragma weak _DYNAMIC
extern void _fini(void);
extern void _init(void);
extern int main(int, char **, char **);
extern void _start(char **, struct ps_strings *, void (*)(void));
#ifdef GCRT
extern void _mcleanup(void);
extern void monstartup(void *, void *);
extern int eprol;
extern int etext;
#endif
char **environ;
const char *__progname = "";
static __inline void
fix_gp(void)
{
#ifdef __GNUC__
/* Calculate gp */
__asm __volatile(" \
movl gp=@gprel(1f) ; \
;; ; \
1: mov r14=ip ; \
;; ; \
sub gp=r14,gp ; \
;; ");
#endif
}
/* The entry function. */
/* ARGSUSED */
void
_start(char **ap, struct ps_strings *ps_strings __unused, void (*cleanup)(void))
{
int argc;
char **argv;
char **env;
const char *s;
fix_gp();
argc = *(long *)(void *)ap;
argv = ap + 1;
env = ap + 2 + argc;
environ = env;
if (argc > 0 && argv[0] != NULL) {
__progname = argv[0];
for (s = __progname; *s != '\0'; s++)
if (*s == '/')
__progname = s + 1;
}
if (&_DYNAMIC != NULL)
atexit(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
__asm__(".ident\t\"$FreeBSD$\"");