1/*
2 * arch/arm/mach-orion5x/include/mach/entry-macro.S
3 *
4 * Low-level IRQ helper macros for Orion platforms
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2.  This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11#include <mach/bridge-regs.h>
12
13	.macro  get_irqnr_preamble, base, tmp
14	ldr	\base, =MAIN_IRQ_CAUSE
15	.endm
16
17	.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
18	ldr	\irqstat, [\base, #0]		@ main cause
19	ldr	\tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
20	mov	\irqnr, #0			@ default irqnr
21	@ find cause bits that are unmasked
22	ands	\irqstat, \irqstat, \tmp	@ clear Z flag if any
23	clzne	\irqnr,	\irqstat		@ calc irqnr
24	rsbne	\irqnr, \irqnr, #31
25	.endm
26