1 /* 2 * arch/arm/mach-ebsa110/include/mach/entry-macro.S 3 * 4 * Low-level IRQ helper macros for ebsa110 platform. 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 12 13 #define IRQ_STAT 0xff000000 /* read */ 14 15 .macro get_irqnr_preamble, base, tmp 16 mov \base, #IRQ_STAT 17 .endm 18 19 .macro get_irqnr_and_base, irqnr, stat, base, tmp 20 ldrb \stat, [\base] @ get interrupts 21 mov \irqnr, #0 22 tst \stat, #15 23 addeq \irqnr, \irqnr, #4 24 moveq \stat, \stat, lsr #4 25 tst \stat, #3 26 addeq \irqnr, \irqnr, #2 27 moveq \stat, \stat, lsr #2 28 tst \stat, #1 29 addeq \irqnr, \irqnr, #1 30 moveq \stat, \stat, lsr #1 31 tst \stat, #1 @ bit 0 should be set 32 .endm 33 34