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.
10 #include <asm/hardware.h>
15 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
16 ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE)
17 ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status
22 1001: tst \irqstat, #15
24 add \irqnr, \irqnr, #4
25 movs \irqstat, \irqstat, lsr #4
27 1002: tst \irqstat, #1
29 add \irqnr, \irqnr, #1
30 movs \irqstat, \irqstat, lsr #1
32 1003: /* EQ will be set if no irqs pending */
34 @ clz \irqnr, \irqstat
35 @1003: /* EQ will be set if we reach MAXIRQNUM */