/****************************************************************************
 *                                                                          *
 * NDSAUDIO                                                                 *
 *                                                                          *
 * Copyright (c) 2009, Mukunda Johnson (mukunda@mukunda.com)                *
 *                                                                          *
 * Permission to use, copy, modify, and/or distribute this software for any *
 * purpose with or without fee is hereby granted, provided that the above   *
 * copyright notice and this permission notice appear in all copies.        *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES *
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         *
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  *
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   *
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    *
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  *
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           *
 *--------------------------------------------------------------------------*
 ****************************************************************************/
 
 // some irq functions

#include "na_macro.inc"

	.global naSuspendIRQ_t
	.global naSuspendIRQ
	.global naRestoreIRQ_t
	.global naRestoreIRQ

	.text
	.align
	
/******************************************************************************
 * suspend interrupts
 ******************************************************************************/
 .thumb
 .thumb_func
naSuspendIRQ_t:
	ldr	r0,=naSuspendIRQ
	bx	r0
	
	.arm
naSuspendIRQ:
	mrs	r0, cpsr
	orr	r0, #1<<7
	msr	cpsr, r0
	bx	lr
	
	.thumb

/******************************************************************************
 * restore interrupts
 ******************************************************************************/
 .thumb_func
naRestoreIRQ_t:
	ldr	r0,=naRestoreIRQ
	bx	r0
	
	.arm
naRestoreIRQ:
	mrs	r0, cpsr
	bic	r0, #1<<7
	msr	cpsr, r0
	bx	lr