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Diffstat (limited to 'lib/csu/aarch64/crt1.c')
-rw-r--r-- | lib/csu/aarch64/crt1.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/csu/aarch64/crt1.c b/lib/csu/aarch64/crt1.c new file mode 100644 index 0000000..6518e8d --- /dev/null +++ b/lib/csu/aarch64/crt1.c @@ -0,0 +1,89 @@ +/* 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("$FreeBSD$"); + +#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" +#include "ignore_init.c" + +#ifdef GCRT +extern void _mcleanup(void); +extern void monstartup(void *, void *); +extern int eprol; +extern int etext; +#endif + +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 */ +" ldr x0, [sp] \n" /* Load argc */ +" add x1, sp, #8 \n" /* load argv */ +" 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)); +} |