/*
 * errno.sx
 *
 * Assembly language wrapper for <errno.h>, also providing macros
 * for manipulation of the "errno" global variable from within any
 * preprocessed assembly language source file.
 *
 * $Id$
 *
 * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
 * Copyright (C) 2016, MinGW.org Project
 *
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */
.globl	__errno
.def	__errno; .scl 2; .type 32; .endef

#ifdef __MINGW64__
# define eax	rax
#endif

.macro	errno	code
/* Assign a specified error code to the global "errno" variable.
 */
	call	__errno		/* get address of "errno" variable */
	movl	$\code, (%eax)	/* store specified "errno" value */
.endm

#include <errno.h>		/* for symbolic error code definitions */

/* vim: set autoindent filetype=asm formatoptions=croql: */
/* $RCSfile$: end of file */
