| Tzachi Perelstein | 585cf17 | 2007-10-23 15:14:41 -0400 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-arm/arch-orion/entry-macro.S |
| 3 | * |
| 4 | * Low-level IRQ helper macros for Orion platforms |
| 5 | * |
| Lennert Buytenhek | 7f74c2c | 2008-02-07 21:55:17 +0100 | [diff] [blame] | 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 |
| Tzachi Perelstein | 585cf17 | 2007-10-23 15:14:41 -0400 | [diff] [blame] | 8 | * warranty of any kind, whether express or implied. |
| 9 | */ |
| 10 | |
| 11 | #include <asm/arch/orion.h> |
| 12 | |
| 13 | .macro disable_fiq |
| 14 | .endm |
| 15 | |
| 16 | .macro arch_ret_to_user, tmp1, tmp2 |
| 17 | .endm |
| 18 | |
| 19 | .macro get_irqnr_preamble, base, tmp |
| 20 | ldr \base, =MAIN_IRQ_CAUSE |
| 21 | .endm |
| 22 | |
| 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 |
| 31 | .endm |