freebsd-dev/lib/csu/aarch64/crt1.c
Andrew Turner 46c1105fbb Stop dereferencing _end in crt1.c. This was only needed for brk/sbrk so is
no longer needed.

Sponsored by:	ABT Systems Ltd
2016-05-22 08:20:30 +00:00

86 lines
2.5 KiB
C

/* LINTLIBRARY */
/*-
* Copyright 1996-1998 John D. Polstra.
* Copyright 2014 Andrew Turner.
* Copyright 2014-2015 The FreeBSD Foundation.
* All rights reserved.
*
* Portions of this software were developed by Andrew Turner
* under sponsorship from the FreeBSD Foundation.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
#include "ignore_init.c"
#ifdef GCRT
extern void _mcleanup(void);
extern void monstartup(void *, void *);
extern int eprol;
extern int etext;
#endif
extern long * _end;
void __start(int, char **, char **, void (*)(void));
/* The entry function. */
__asm(" .text \n"
" .align 0 \n"
" .globl _start \n"
" _start: \n"
" mov x3, x2 \n" /* cleanup */
" add x1, x0, #8 \n" /* load argv */
" ldr x0, [x0] \n" /* load argc */
" add x2, x1, x0, lsl #3 \n" /* env is after argv */
" add x2, x2, #8 \n" /* argv is null terminated */
" b __start ");
/* The entry function. */
void
__start(int argc, char *argv[], char *env[], void (*cleanup)(void))
{
handle_argv(argc, argv, env);
if (&_DYNAMIC != NULL)
atexit(cleanup);
else
_init_tls();
#ifdef GCRT
atexit(_mcleanup);
monstartup(&eprol, &etext);
__asm__("eprol:");
#endif
handle_static_init(argc, argv, env);
exit(main(argc, argv, env));
}