368860124c
This updates the MIPS arch to be much more in
sync with the commit Nick Kralevich made last
June; see 9d40326830c2bd407427889c554adeb915ee6b4a.
Rewrite
crtbegin.S -> crtbegin.c
crtbegin_so.S -> crtbegin_so.c
__dso_handle.S -> __dso_handle.c
__dso_handle_so.S -> __dso_handle_so.c
atexit.S -> atexit.c
Previously __do_global_dtors_aux was in the tasks
__FINI_ARRAY__ linked with crtbegin.S and it now being
removed as there is no need to call a destructor just
before terminating a process.
Shared libraries, on the other hand, are linked with
crtbegin_so.c and have a hidden destructor declared
to allow the bionic linker to call __on_dlclose().
Change-Id: Ieb4da5199b54573de05743990e309db381a11cb8
Signed-off-by: Pete Delaney <piet.delaney@imgtec.com>
Signed-off-by: Chao-Ying Fu <chao-ying.fu@imgtec.com>
Signed-off-by: Chris Dearman <chris.dearman@imgtec.com>
95 lines
3.6 KiB
C
95 lines
3.6 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "../../bionic/libc_init_common.h"
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#include <stddef.h>
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#include <stdint.h>
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__attribute__ ((section (".preinit_array")))
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void (*__PREINIT_ARRAY__)(void) = (void (*)(void)) -1;
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__attribute__ ((section (".init_array")))
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void (*__INIT_ARRAY__)(void) = (void (*)(void)) -1;
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__attribute__ ((section (".fini_array")))
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void (*__FINI_ARRAY__)(void) = (void (*)(void)) -1;
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__LIBC_HIDDEN__ void do_mips_start(void *raw_args) {
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structors_array_t array;
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array.preinit_array = &__PREINIT_ARRAY__;
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array.init_array = &__INIT_ARRAY__;
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array.fini_array = &__FINI_ARRAY__;
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__libc_init(raw_args, NULL, &main, &array);
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}
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/*
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* This function prepares the return address with a branch-and-link
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* instruction (bal) and then uses a .cpload to compute the Global
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* Offset Table (GOT) pointer ($gp). The $gp is then used to load
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* the address of _do_start() into $t9 just before calling it.
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* Terminating the stack with a NULL return address.
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*/
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__asm__ (
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" .set push \n"
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" \n"
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" .text \n"
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" .align 4 \n"
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" .type __start,@function \n"
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" .globl __start \n"
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" .globl _start \n"
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" \n"
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" .ent __start \n"
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"__start: \n"
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" _start: \n"
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" .frame $sp,32,$ra \n"
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" .mask 0x80000000,-4 \n"
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" \n"
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" .set noreorder \n"
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" bal 1f \n"
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" nop \n"
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"1: \n"
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" .cpload $ra \n"
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" .set reorder \n"
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" \n"
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" move $a0, $sp \n"
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" addiu $sp, $sp, (-32) \n"
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" sw $0, 28($sp) \n"
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" la $t9, do_mips_start \n"
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" jalr $t9 \n"
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" \n"
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"2: b 2b \n"
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" .end __start \n"
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" \n"
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" .set pop \n"
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);
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#include "__dso_handle.h"
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#include "atexit.h"
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