2 * arch/arm/mach-ebsa110/include/mach/entry-macro.S
4 * Low-level IRQ helper macros for ebsa110 platform.
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.
13 #define IRQ_STAT 0xff000000 /* read */
15 .macro get_irqnr_preamble, base, tmp
19 .macro get_irqnr_and_base, irqnr, stat, base, tmp
20 ldrb \stat, [\base] @ get interrupts
23 addeq \irqnr, \irqnr, #4
24 moveq \stat, \stat, lsr #4
26 addeq \irqnr, \irqnr, #2
27 moveq \stat, \stat, lsr #2
29 addeq \irqnr, \irqnr, #1
30 moveq \stat, \stat, lsr #1
31 tst \stat, #1 @ bit 0 should be set