sysdep.s

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/* 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