2 * include/asm-arm/arch-versatile/entry-macro.S
4 * Low-level IRQ helper macros for Versatile platforms
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 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
14 ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
15 ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
20 1001: tst \irqstat, #15
22 add \irqnr, \irqnr, #4
23 movs \irqstat, \irqstat, lsr #4
25 1002: tst \irqstat, #1
27 add \irqnr, \irqnr, #1
28 movs \irqstat, \irqstat, lsr #1
30 1003: /* EQ will be set if no irqs pending */
32 @ clz \irqnr, \irqstat
33 @1003: /* EQ will be set if we reach MAXIRQNUM */