108 lines
2.9 KiB
ArmAsm
108 lines
2.9 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (C) 2012 The Android Open Source Project
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "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
|
||
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 4
|
||
|
|
.type __start,@function
|
||
|
|
|
||
|
|
.ent __start
|
||
|
|
.globl __start
|
||
|
|
__start:
|
||
|
|
.set noreorder
|
||
|
|
bal 1f
|
||
|
|
nop
|
||
|
|
1: .cpload $31
|
||
|
|
.set reorder
|
||
|
|
|
||
|
|
/* Discover the load address */
|
||
|
|
la $t0, 1f
|
||
|
|
bal 1f
|
||
|
|
1: subu $t0, $ra, $t0
|
||
|
|
|
||
|
|
#define DT_PLTGOT 3
|
||
|
|
#define DT_MIPS_LOCAL_GOTNO 0x7000000a
|
||
|
|
|
||
|
|
/* Search dynamic table for DT_MIPS_LOCAL_GOTNO and DT_PLTGOT values */
|
||
|
|
la $t1, _DYNAMIC
|
||
|
|
addu $t1, $t0
|
||
|
|
li $t3, DT_PLTGOT
|
||
|
|
li $t4, DT_MIPS_LOCAL_GOTNO
|
||
|
|
0:
|
||
|
|
lw $t2, 0($t1)
|
||
|
|
beqz $t2, .Lrelocate_local_got
|
||
|
|
|
||
|
|
bne $t2, $t3, 1f /* DT_PLTGOT? */
|
||
|
|
lw $s0, 4($t1)
|
||
|
|
addu $s0, $t0
|
||
|
|
b 2f
|
||
|
|
|
||
|
|
1: bne $t2, $t4, 1f /* DT_MIPS_LOCAL_GOTNO? */
|
||
|
|
lw $s1, 4($t1)
|
||
|
|
b 2f
|
||
|
|
|
||
|
|
1:
|
||
|
|
2: addu $t1, 8
|
||
|
|
b 0b
|
||
|
|
|
||
|
|
.Lrelocate_local_got:
|
||
|
|
/*
|
||
|
|
* Relocate the local GOT entries
|
||
|
|
* got[0] is address of lazy resolver function
|
||
|
|
* got[1] may be used for a GNU extension
|
||
|
|
*/
|
||
|
|
|
||
|
|
addu $s0, 4
|
||
|
|
subu $s1, 1
|
||
|
|
lw $t1, ($s0)
|
||
|
|
bgez $t1, 9f
|
||
|
|
addu $s0, 4
|
||
|
|
subu $s1, 1
|
||
|
|
b 9f
|
||
|
|
|
||
|
|
1: lw $t1, ($s0)
|
||
|
|
addu $t1, $t0
|
||
|
|
sw $t1, ($s0)
|
||
|
|
addu $s0, 4
|
||
|
|
9: subu $s1, 1
|
||
|
|
bgez $s1, 1b
|
||
|
|
|
||
|
|
/* call linker_init */
|
||
|
|
move $a0, $sp
|
||
|
|
addiu $sp, -4*4 /* space for arg saves in linker_init */
|
||
|
|
la $t9, __linker_init
|
||
|
|
jalr $t9
|
||
|
|
move $t9, $v0
|
||
|
|
addu $sp, 4*4 /* restore sp */
|
||
|
|
j $t9
|
||
|
|
.end __start
|
||
|
|
|
||
|
|
.section .ctors, "wa"
|
||
|
|
.globl __CTOR_LIST__
|
||
|
|
__CTOR_LIST__:
|
||
|
|
.long -1
|