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/*
* Copyright (C) 2008 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 <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <elf.h>
#include <asm/page.h>
#include "pthread_internal.h"
#include "atexit.h"
#include "libc_init_common.h"
#include <bionic_tls.h>
#include <errno.h>
/* This contains the common C library initialization code.
* To understand what happens here, you should read the
* "Initialization and Finalization" section of the file
* named bionic/linker/README.TXT
*/
static void call_array(void(**list)())
{
// First element is -1, list is null-terminated
while (*++list) {
(*list)();
}
}
char* __progname;
char **environ;
/* from asm/page.h */
unsigned int __page_size = PAGE_SIZE;
unsigned int __page_shift = PAGE_SHIFT;
int __system_properties_init(void);
/* This function can be run under two different contexts:
*
* - for statically linked executables (i.e. those who do
* not depend on shared libraries at all), it will be
* called from the __libc_init() function defined in
* bionic/libc_init_static.c
*
* - for dynamic executables, it will be called from the
* __libc_init() function defined in bionic/libc_init_dynamic.c
*
*/
void __libc_init_common(uintptr_t *elfdata,
void (*onexit)(void),
int (*slingshot)(int, char**, char**),
structors_array_t const * const structors,
void (*pre_ctor_hook)())
{
int argc;
char **argv, **envp, **envend;
struct auxentry *auxentry;
unsigned int page_size = 0, page_shift = 0;
argc = (int) *elfdata++;
argv = (char**) elfdata;
envp = argv+(argc+1);
environ = envp;
__progname = argv[0] ? argv[0] : "<unknown>";
errno = 0;
__system_properties_init();
if (pre_ctor_hook) pre_ctor_hook();
if (structors != NULL) {
// pre-init array.
call_array(structors->preinit_array);
// for compatibility with non-eabi binary, call the .ctors section
// this is only useful for static non-ARM (e.g. x86) executables.
call_array(structors->ctors_array);
// call static constructors
call_array(structors->init_array);
}
exit(slingshot(argc, argv, envp));
}
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