diff options
Diffstat (limited to 'kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S')
| -rw-r--r-- | kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S b/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S new file mode 100644 index 000000000..14b110de7 --- /dev/null +++ b/kernel/arch/arm/mach-ebsa110/include/mach/entry-macro.S @@ -0,0 +1,33 @@ +/* + * arch/arm/mach-ebsa110/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for ebsa110 platform. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + + + +#define IRQ_STAT 0xff000000 /* read */ + + .macro get_irqnr_preamble, base, tmp + mov \base, #IRQ_STAT + .endm + + .macro get_irqnr_and_base, irqnr, stat, base, tmp + ldrb \stat, [\base] @ get interrupts + mov \irqnr, #0 + tst \stat, #15 + addeq \irqnr, \irqnr, #4 + moveq \stat, \stat, lsr #4 + tst \stat, #3 + addeq \irqnr, \irqnr, #2 + moveq \stat, \stat, lsr #2 + tst \stat, #1 + addeq \irqnr, \irqnr, #1 + moveq \stat, \stat, lsr #1 + tst \stat, #1 @ bit 0 should be set + .endm + |