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79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* Initialization code run first thing by the ELF startup code. For i386/Unix.
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Copyright (C) 1995-2012 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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<http://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <unistd.h>
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extern void __libc_init (int, char **, char **);
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#ifdef USE_NONOPTION_FLAGS
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extern void __getopt_clean_environment (char **);
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#endif
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extern void __libc_global_ctors (void);
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int __libc_multiple_libcs attribute_hidden = 1;
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static void
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init (int *data)
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{
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int argc = *data;
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char **argv = (void *) (data + 1);
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char **envp = &argv[argc + 1];
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__environ = envp;
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__libc_init (argc, argv, envp);
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#ifdef USE_NONOPTION_FLAGS
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/* This is a hack to make the special getopt in GNU libc working. */
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__getopt_clean_environment (envp);
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#endif
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/* Initialize ctype data. */
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__ctype_init ();
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}
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#ifdef SHARED
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/* This function is called to initialize the shared C library.
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It is called just before the user _start code from i386/elf/start.S,
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with the stack set up as that code gets it. */
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/* NOTE! The linker notices the magical name `_init' and sets the DT_INIT
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pointer in the dynamic section based solely on that. It is convention
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for this function to be in the `.init' section, but the symbol name is
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the only thing that really matters!! */
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/*void _init (int argc, ...) __attribute__ ((unused, section (".init")));*/
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void
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_init (int argc, ...)
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{
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init (&argc);
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#ifndef NO_CTORS_DTORS_SECTIONS
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__libc_global_ctors ();
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#endif
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}
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#endif
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void
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__libc_init_first (int argc __attribute__ ((unused)), ...)
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{
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#ifndef SHARED
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init (&argc);
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#endif
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}
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