mirror of git://sourceware.org/git/glibc.git
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* Initialization code run first thing by the ELF startup code. Common version
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Copyright (C) 1995-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sysdep.h>
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#include <fpu_control.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <libc-internal.h>
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#include <ldsodefs.h>
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/* Remember the command line argument and environment contents for
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later calls of initializers for dynamic libraries. */
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int __libc_argc attribute_hidden;
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char **__libc_argv attribute_hidden;
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void
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__libc_init_first (int argc, char **argv, char **envp)
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{
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#ifdef SHARED
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/* For DSOs we do not need __libc_init_first but an ELF constructor. */
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}
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static void __attribute__ ((constructor))
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_init_first (int argc, char **argv, char **envp)
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{
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#endif
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/* Make sure we don't initialize twice. */
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#ifdef SHARED
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if (__libc_initial)
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{
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/* Set the FPU control word to the proper default value if the
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kernel would use a different value. */
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if (__fpu_control != GLRO(dl_fpu_control))
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__setfpucw (__fpu_control);
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}
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#endif
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/* Save the command-line arguments. */
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__libc_argc = argc;
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__libc_argv = argv;
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__environ = envp;
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#ifndef SHARED
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/* First the initialization which normally would be done by the
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dynamic linker. */
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_dl_non_dynamic_init ();
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#endif
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__init_misc (argc, argv, envp);
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}
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/* This function is defined here so that if this file ever gets into
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ld.so we will get a link error. Having this file silently included
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in ld.so causes disaster, because the _init_first definition above
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will cause ld.so to gain an ELF constructor, which is not a cool
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thing. */
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extern void _dl_start (void) __attribute__ ((noreturn));
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void
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_dl_start (void)
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{
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abort ();
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}
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