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/* Copyright (C) 1991,1992,1993,1994,1995,1996,1997,2000,2002,2004,2005
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define _ERRNO_H
#include <bits/errno.h>
#include <bp-asm.h>
#include <bp-sym.h>
#ifdef IS_IN_rtld
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#endif
.globl C_SYMBOL_NAME(errno)
.globl syscall_error
#undef syscall_error
#ifdef NO_UNDERSCORES
__syscall_error:
#else
syscall_error:
#endif
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */
jne notb /* Branch if not. */
movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
notb:
#endif
#ifndef PIC
# if USE___THREAD
# ifndef NO_TLS_DIRECT_SEG_REFS
movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF)
# else
movl %gs:0, %ecx
movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx)
# endif
# elif !defined _LIBC_REENTRANT
movl %eax, C_SYMBOL_NAME(errno)
# else
pushl %eax
PUSH_ERRNO_LOCATION_RETURN
call BP_SYM (__errno_location)
POP_ERRNO_LOCATION_RETURN
popl %ecx
movl %ecx, (%eax)
# endif
#else
/* The caller has pushed %ebx and then set it up to
point to the GOT before calling us through the PLT. */
# if USE___THREAD
movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx
/* Pop %ebx value saved before jumping here. */
popl %ebx
# ifndef NO_TLS_DIRECT_SEG_REFS
addl %gs:0, %ecx
movl %eax, (%ecx)
# else
movl %eax, %gs:0(%ecx)
# endif
# elif RTLD_PRIVATE_ERRNO
movl %eax, C_SYMBOL_NAME(rtld_errno@GOTOFF)(%ebx)
/* Pop %ebx value saved before jumping here. */
popl %ebx
# elif !defined _LIBC_REENTRANT
movl C_SYMBOL_NAME(errno@GOT)(%ebx), %ecx
/* Pop %ebx value saved before jumping here. */
popl %ebx
movl %eax, (%ecx)
# else
pushl %eax
PUSH_ERRNO_LOCATION_RETURN
call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT)
POP_ERRNO_LOCATION_RETURN
popl %ecx
/* Pop %ebx value saved before jumping here. */
popl %ebx
movl %ecx, (%eax)
# endif
#endif
movl $-1, %eax
ret
#undef __syscall_error
END (__syscall_error)
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