| /* |
| * 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 |
| |
