42d2676e7c
* sysdeps/unix/sysv/linux/i386/sysdep.S (_errno): Define as alias for errno. * stdio-common/vfprintf.c [USE_IN_LIBIO] (vfprintf): Define as alias for _IO_vfprintf. * sysdeps/unix/sysv/linux/sockaddrcom.h: File removed. * sysdeps/unix/sysv/linux/i386/init-first.c (init): Use __fpu_control instead of ___fpu_control. * sysdeps/unix/sysv/linux/i386/ieee_fpu.c (___fpu_control): Renamed to __fpu_control. * sysdeps/unix/sysv/linux/i386/fpu_control.h: Likewise. * sysdeps/unix/sysv/linux/i386/fpu_control.c: Likewise. * elf/dl-minimal.c: New file. * elf/Makefile (rtld-routines): Add dl-minimal. * elf/rtld.c (__dgettext, __assert_fail, __assert_perror_fail): Functions moved to dl-minimal.c. * sysdeps/mach/hurd/dl-sysdep.c (malloc, free, realloc, sigjmp_save, longjmp): Likewise. * sysdeps/unix/sysv/linux/i386/brk.S (__curbrk): Always initialize to &_end, regardless of PIC. * stdio-common/vfscanf.c (__vfscanf): Fix arg name in defn.
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* Initialization code run first thing by the ELF startup code. i386/Linux
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Copyright (C) 1995 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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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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extern void __libc_init (int, char **, char **);
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extern void __libc_global_ctors (void);
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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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/* Make sure we are not using the iBSC2 personality. The `personality'
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syscall takes one argument; zero means the Linux personality. The
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argument arrives in %ebx; we have to save and restore %ebx by hand
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here, because GCC (as of 2.7.0) cannot handle saving and restoring it
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for us when it is the dedicated GOT register for PIC. */
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asm ("pushl %%ebx\n"
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"xorl %%ebx, %%ebx\n"
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"int $0x80 # syscall no %0\n"
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"popl %%ebx"
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: : "a" (SYS_ify (personality)));
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/* Set the FPU control word to the proper default value. */
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__setfpucw (__fpu_control);
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__environ = envp;
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__libc_init (argc, argv, envp);
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}
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#ifdef PIC
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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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__libc_global_ctors ();
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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 PIC
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init (&argc);
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#endif
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}
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