2 * arch/arm/mach-orion5x/include/mach/entry-macro.S
4 * Low-level IRQ helper macros for Orion 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.
11 #include <mach/bridge-regs.h>
16 .macro arch_ret_to_user, tmp1, tmp2
19 .macro get_irqnr_preamble, base, tmp
20 ldr \base, =MAIN_IRQ_CAUSE
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