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1/*
2 * include/asm-arm/arch-orion/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 <asm/arch/orion.h>
12
13 .macro disable_fiq
14 .endm
15
16 .macro arch_ret_to_user, tmp1, tmp2
17 .endm
18
19 .macro get_irqnr_preamble, base, tmp
20 ldr \base, =MAIN_IRQ_CAUSE
21 .endm
22
23 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
24 ldr \irqstat, [\base, #0] @ main cause
25 ldr \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
26 mov \irqnr, #0 @ default irqnr
27 @ find cause bits that are unmasked
28 ands \irqstat, \irqstat, \tmp @ clear Z flag if any
29 clzne \irqnr, \irqstat @ calc irqnr
30 rsbne \irqnr, \irqnr, #31
31 .endm