glibc/ports/sysdeps/mips/init-first.c

66 lines
1.9 KiB
C

/* Initialization code run first thing by the ELF startup code. For mips/Unix.
Copyright (C) 1996, 1997, 2010 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <unistd.h>
extern void __libc_init (int, char **, char **);
extern void __libc_global_ctors (void);
static void
init (int *data)
{
int argc = *data;
char **argv = (void *) (data + 1);
char **envp = &argv[argc + 1];
__environ = envp;
__libc_init (argc, argv, envp);
}
#ifdef SHARED
/* This function is called to initialize the shared C library.
It is called just before the user _start code from mips/elf/start.S,
with the stack set up as that code gets it. */
/* NOTE! The linker notices the magical name `_init' and sets the DT_INIT
pointer in the dynamic section based solely on that. It is convention
for this function to be in the `.init' section, but the symbol name is
the only thing that really matters!! */
/*void _init (int argc, ...) __attribute__ ((unused, section (".init")));*/
void
_init (int argc, ...)
{
init (&argc);
#ifndef NO_CTORS_DTORS_SECTIONS
__libc_global_ctors ();
#endif
}
#endif
void
__libc_init_first (int argc __attribute__ ((unused)), ...)
{
#ifndef SHARED
init (&argc);
#endif
}