| Pete Delaney | 3688601 | 2013-07-17 14:23:29 -0700 | [diff] [blame] | 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 | |
| Pete Delaney | 3688601 | 2013-07-17 14:23:29 -0700 | [diff] [blame] | 39 | |
| 40 | __LIBC_HIDDEN__ void do_mips_start(void *raw_args) { |
| 41 | structors_array_t array; |
| 42 | array.preinit_array = &__PREINIT_ARRAY__; |
| 43 | array.init_array = &__INIT_ARRAY__; |
| Pete Delaney | 3688601 | 2013-07-17 14:23:29 -0700 | [diff] [blame] | 44 | |
| 45 | __libc_init(raw_args, NULL, &main, &array); |
| 46 | } |
| 47 | |
| 48 | /* |
| 49 | * This function prepares the return address with a branch-and-link |
| 50 | * instruction (bal) and then uses a .cpload to compute the Global |
| 51 | * Offset Table (GOT) pointer ($gp). The $gp is then used to load |
| 52 | * the address of _do_start() into $t9 just before calling it. |
| 53 | * Terminating the stack with a NULL return address. |
| 54 | */ |
| 55 | __asm__ ( |
| 56 | " .set push \n" |
| 57 | " \n" |
| 58 | " .text \n" |
| 59 | " .align 4 \n" |
| 60 | " .type __start,@function \n" |
| 61 | " .globl __start \n" |
| 62 | " .globl _start \n" |
| 63 | " \n" |
| 64 | " .ent __start \n" |
| 65 | "__start: \n" |
| 66 | " _start: \n" |
| 67 | " .frame $sp,32,$ra \n" |
| 68 | " .mask 0x80000000,-4 \n" |
| 69 | " \n" |
| 70 | " .set noreorder \n" |
| 71 | " bal 1f \n" |
| 72 | " nop \n" |
| 73 | "1: \n" |
| 74 | " .cpload $ra \n" |
| 75 | " .set reorder \n" |
| 76 | " \n" |
| 77 | " move $a0, $sp \n" |
| 78 | " addiu $sp, $sp, (-32) \n" |
| 79 | " sw $0, 28($sp) \n" |
| 80 | " la $t9, do_mips_start \n" |
| 81 | " jalr $t9 \n" |
| 82 | " \n" |
| 83 | "2: b 2b \n" |
| 84 | " .end __start \n" |
| 85 | " \n" |
| 86 | " .set pop \n" |
| 87 | ); |
| 88 | |
| Elliott Hughes | eb847bc | 2013-10-09 15:50:50 -0700 | [diff] [blame] | 89 | #include "../../arch-common/bionic/__dso_handle.h" |
| Pete Delaney | 3688601 | 2013-07-17 14:23:29 -0700 | [diff] [blame] | 90 | #include "atexit.h" |