fafb1ee7bd
stackpointer. Userland expects the kernel to pass it an aligned sp and pass a pointer to the arguments in x0. The kernel side was updated in r289502, 3 months ago. Sponsored by: ABT Systems Ltd
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* LINTLIBRARY */
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/*-
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* Copyright 1996-1998 John D. Polstra.
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* Copyright 2014 Andrew Turner.
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* Copyright 2014-2015 The FreeBSD Foundation.
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* All rights reserved.
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*
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* Portions of this software were developed by Andrew Turner
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* under sponsorship from the FreeBSD Foundation.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdlib.h>
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#include "libc_private.h"
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#include "crtbrand.c"
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#include "ignore_init.c"
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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 long * _end;
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void __start(int, char **, char **, void (*)(void));
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/* The entry function. */
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__asm(" .text \n"
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" .align 0 \n"
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" .globl _start \n"
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" _start: \n"
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" mov x3, x2 \n" /* cleanup */
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" add x1, x0, #8 \n" /* load argv */
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" ldr x0, [x0] \n" /* load argc */
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" add x2, x1, x0, lsl #3 \n" /* env is after argv */
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" add x2, x2, #8 \n" /* argv is null terminated */
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" b __start ");
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/* The entry function. */
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void
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__start(int argc, char *argv[], char *env[], void (*cleanup)(void))
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{
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handle_argv(argc, argv, env);
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if (&_DYNAMIC != NULL)
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atexit(cleanup);
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else {
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/*
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* Hack to resolve _end so we read the correct symbol.
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* Without this it will resolve to the copy in the library
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* that firsts requests it. We should fix the toolchain,
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* however this is is needed until this can take place.
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*/
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*(volatile long *)&_end;
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_init_tls();
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}
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#ifdef GCRT
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atexit(_mcleanup);
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monstartup(&eprol, &etext);
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__asm__("eprol:");
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#endif
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handle_static_init(argc, argv, env);
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exit(main(argc, argv, env));
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}
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