1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "../../bionic/libc_init_common.h"
30#include <stddef.h>
31#include <stdint.h>
32
33__attribute__ ((section (".preinit_array")))
34void (*__PREINIT_ARRAY__)(void) = (void (*)(void)) -1;
35
36__attribute__ ((section (".init_array")))
37void (*__INIT_ARRAY__)(void) = (void (*)(void)) -1;
38
39__attribute__ ((section (".fini_array")))
40void (*__FINI_ARRAY__)(void) = (void (*)(void)) -1;
41
42
43__LIBC_HIDDEN__ void do_arm64_start(void* raw_args) {
44  structors_array_t array;
45  array.preinit_array = &__PREINIT_ARRAY__;
46  array.init_array = &__INIT_ARRAY__;
47  array.fini_array = &__FINI_ARRAY__;
48  __libc_init(raw_args, NULL, &main, &array);
49}
50
51/*
52 * Put the value of sp in x0 and call do_arm64_init(). The latter will then
53 * then be able to access the stack as prepared by the kernel's execve system
54 * call (via the first argument).
55 */
56__asm__ (
57"        .text                      \n"
58"        .align  2                  \n"
59"        .global _start             \n"
60"        .hidden _start             \n"
61"        .type   _start, %function  \n"
62"_start:                            \n"
63"        add     x0, sp, xzr        \n"
64"        b       do_arm64_start   \n"
65"        .size   _start, .-_start   \n"
66);
67
68#include "../../arch-common/bionic/__dso_handle.h"
69#include "../../arch-common/bionic/atexit.h"
70#include "../../arch-common/bionic/pthread_atfork.h"
71