glibc/sysdeps/unix/sysv/i386/linux/sysdep.S
1995-02-18 01:27:10 +00:00

39 lines
1.5 KiB
ArmAsm

/* Copyright (C) 1992, 1993, 1994 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 <sysdep.h>
#define _ERRNO_H
#include <errnos.h>
/* We jump here when a system call gets an error.
The error number is negated in %eax. */
.globl syscall_error
syscall_error:
negl %eax /* Make it positive. */
#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 %eax, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */
jne 0f /* Branch if not. */
move $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
#endif
0: movl %eax, _errno /* Store it in `errno'. */
move $-1, %eax /* Return -1. */
ret