| /* |
| * 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. |
| */ |
| |
| #include <private/bionic_asm.h> |
| |
| #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) |
| #define ELF_DYNSZ 8 |
| #define ELF_DYN_TAG 0 |
| #define ELF_DYN_VAL 4 |
| #define GOTENT_SZ 4 |
| #else |
| #define ELF_DYNSZ 16 |
| #define ELF_DYN_TAG 0 |
| #define ELF_DYN_VAL 8 |
| #define GOTENT_SZ 8 |
| #endif |
| |
| .text |
| .align 4 |
| .type __start,@function |
| |
| .ent __start |
| .globl __start |
| .globl _start |
| __start: |
| _start: |
| .set noreorder |
| bal 1f |
| nop |
| 1: |
| #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) |
| .cpload ra |
| #else |
| .cpsetup ra, $0, 1b |
| #endif |
| .set reorder |
| |
| /* Discover the load address */ |
| LA t0, 1b |
| PTR_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 |
| PTR_ADDU t1, t0 |
| LI t3, DT_PLTGOT |
| LI ta0, DT_MIPS_LOCAL_GOTNO |
| 0: |
| REG_L t2, ELF_DYN_TAG(t1) |
| beqz t2, .Lrelocate_local_got |
| |
| bne t2, t3, 1f /* DT_PLTGOT? */ |
| REG_L s0, ELF_DYN_VAL(t1) |
| PTR_ADDU s0, t0 |
| b 2f |
| |
| 1: |
| bne t2, ta0, 2f /* DT_MIPS_LOCAL_GOTNO? */ |
| REG_L s1, ELF_DYN_VAL(t1) |
| |
| 2: PTR_ADDU t1, ELF_DYNSZ |
| 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 |
| */ |
| |
| PTR_ADDU s0, GOTENT_SZ |
| SUBU s1, 1 |
| PTR_L t1, (s0) |
| bgez t1, 9f |
| PTR_ADDU s0, GOTENT_SZ |
| SUBU s1, 1 |
| b 9f |
| |
| 1: PTR_L t1, (s0) |
| PTR_ADDU t1, t0 |
| PTR_S t1, (s0) |
| PTR_ADDU s0, GOTENT_SZ |
| 9: SUBU s1, 1 |
| bgez s1, 1b |
| |
| /* call linker_init */ |
| move a0, sp |
| #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) |
| PTR_SUBU sp, 4*REGSZ /* space for arg saves in linker_init */ |
| #endif |
| jal __linker_init |
| #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) |
| PTR_ADDU sp, 4*REGSZ /* restore sp */ |
| #endif |
| move t9, v0 |
| j t9 |
| .end __start |
