mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
8d71c7b0e4
* string/strnlen.c: New file. * string/Makefile (routines): Add strnlen. * string/string.h [__USE_GNU] (strnlen): Declare new function. [__OPTIMIZE__]: Define extern inline implementation of it.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* Initialization code run first thing by the ELF startup code. Linux version.
|
|
Copyright (C) 1995, 1996 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <unistd.h>
|
|
#include <sysdep.h>
|
|
#include "fpu_control.h"
|
|
|
|
/* This code is mostly the same for all machines. This version works at
|
|
least for i386 and m68k, and probably any CISCy machine with a normal
|
|
stack arrangement. */
|
|
|
|
extern void __libc_init (int, char **, char **);
|
|
extern void __libc_global_ctors (void);
|
|
|
|
|
|
static void
|
|
init (int *data)
|
|
{
|
|
extern int __personality (int);
|
|
|
|
int argc = *data;
|
|
char **argv = (void *) (data + 1);
|
|
char **envp = &argv[argc + 1];
|
|
|
|
/* The `personality' system call takes one argument that chooses the
|
|
"personality", i.e. the set of system calls and such. Zero is the
|
|
native Linux value; we must make this call first thing to disable
|
|
emulation of some other system that might have been enabled by default
|
|
based on the executable format. */
|
|
__personality (0);
|
|
|
|
/* Set the FPU control word to the proper default value. */
|
|
__setfpucw (__fpu_control);
|
|
|
|
__environ = envp;
|
|
__libc_init (argc, argv, envp);
|
|
}
|
|
|
|
#ifdef PIC
|
|
/* This function is called to initialize the shared C library.
|
|
It is called just before the user _start code from i386/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);
|
|
|
|
__libc_global_ctors ();
|
|
}
|
|
#endif
|
|
|
|
|
|
void
|
|
__libc_init_first (int argc __attribute__ ((unused)), ...)
|
|
{
|
|
#ifndef PIC
|
|
init (&argc);
|
|
#endif
|
|
}
|