| /* | |
| * arch/arm/mach-iop32x/include/mach/entry-macro.S | |
| * | |
| * Low-level IRQ helper macros for IOP32x-based platforms | |
| * | |
| * 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. | |
| */ | |
| .macro get_irqnr_preamble, base, tmp | |
| mrc p15, 0, \tmp, c15, c1, 0 | |
| orr \tmp, \tmp, #(1 << 6) | |
| mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access | |
| mrc p15, 0, \tmp, c15, c1, 0 | |
| mov \tmp, \tmp | |
| sub pc, pc, #4 @ cp_wait | |
| .endm | |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| mrc p6, 0, \irqstat, c8, c0, 0 @ Read IINTSRC | |
| cmp \irqstat, #0 | |
| clzne \irqnr, \irqstat | |
| rsbne \irqnr, \irqnr, #31 | |
| .endm | |
| .macro arch_ret_to_user, tmp1, tmp2 | |
| mrc p15, 0, \tmp1, c15, c1, 0 | |
| ands \tmp2, \tmp1, #(1 << 6) | |
| bicne \tmp1, \tmp1, #(1 << 6) | |
| mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access | |
| .endm |