| /* |
| * 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. |
| */ |
| /* |
| * libc_init_static.c |
| * |
| * The program startup function __libc_init() defined here is |
| * used for static executables only (i.e. those that don't depend |
| * on shared libraries). It is called from arch-$ARCH/bionic/crtbegin_static.S |
| * which is directly invoked by the kernel when the program is launched. |
| * |
| * The 'structors' parameter contains pointers to various initializer |
| * arrays that must be run before the program's 'main' routine is launched. |
| */ |
| |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <elf.h> |
| #include "pthread_internal.h" |
| #include "atexit.h" |
| #include "libc_init_common.h" |
| |
| #include <bionic_tls.h> |
| #include <errno.h> |
| |
| static void call_array(void(**list)()) |
| { |
| // First element is -1, list is null-terminated |
| while (*++list) { |
| (*list)(); |
| } |
| } |
| |
| __noreturn void __libc_init(uintptr_t *elfdata, |
| void (*onexit)(void), |
| int (*slingshot)(int, char**, char**), |
| structors_array_t const * const structors) |
| { |
| int argc; |
| char **argv, **envp; |
| |
| __libc_init_tls(NULL); |
| |
| /* get the initial thread from TLS and add it to gThreadList */ |
| _pthread_internal_add(__get_thread()); |
| |
| /* Initialize the C runtime environment */ |
| __libc_init_common(elfdata); |
| |
| /* Several Linux ABIs don't pass the onexit pointer, and the ones that |
| * do never use it. Therefore, we ignore it. |
| */ |
| |
| /* pre-init array. */ |
| call_array(structors->preinit_array); |
| |
| #ifndef __i386__ |
| /* .ctors section initializers, for non-arm-eabi ABIs */ |
| call_array(structors->ctors_array); |
| #endif |
| |
| // call static constructors |
| call_array(structors->init_array); |
| |
| argc = (int) *elfdata; |
| argv = (char**)(elfdata + 1); |
| envp = argv + argc + 1; |
| |
| /* The executable may have its own destructors listed in its .fini_array |
| * so we need to ensure that these are called when the program exits |
| * normally. |
| */ |
| if (structors->fini_array) |
| __cxa_atexit(__libc_fini,structors->fini_array,NULL); |
| |
| exit(slingshot(argc, argv, envp)); |
| } |