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"))) 34 void (*__PREINIT_ARRAY__)(void) = (void (*)(void)) -1; 35 36 __attribute__ ((section (".init_array"))) 37 void (*__INIT_ARRAY__)(void) = (void (*)(void)) -1; 38 39 __attribute__ ((section (".fini_array"))) 40 void (*__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
