1 /* 2 * arch/arm/mach-iop32x/include/mach/entry-macro.S 3 * 4 * Low-level IRQ helper macros for IOP32x-based platforms 5 * 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. 9 */ 10 .macro get_irqnr_preamble, base, tmp 11 mrc p15, 0, \tmp, c15, c1, 0 12 orr \tmp, \tmp, #(1 << 6) 13 mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access 14 mrc p15, 0, \tmp, c15, c1, 0 15 mov \tmp, \tmp 16 sub pc, pc, #4 @ cp_wait 17 .endm 18 19 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 20 mrc p6, 0, \irqstat, c8, c0, 0 @ Read IINTSRC 21 cmp \irqstat, #0 22 clzne \irqnr, \irqstat 23 rsbne \irqnr, \irqnr, #32 24 .endm 25 26 .macro arch_ret_to_user, tmp1, tmp2 27 mrc p15, 0, \tmp1, c15, c1, 0 28 ands \tmp2, \tmp1, #(1 << 6) 29 bicne \tmp1, \tmp1, #(1 << 6) 30 mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access 31 .endm 32