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/* * arch/arm/mach-iop33x/include/mach/entry-macro.S * * Low-level IRQ helper macros for IOP33x-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. */ #include <mach/iop33x.h> .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, c14, c0, 0 @ Read IINTVEC cmp \irqstat, #0 mrceq p6, 0, \irqstat, c14, c0, 0 @ erratum 63 workaround adds \irqnr, \irqstat, #1 movne \irqnr, \irqstat, lsr #2 .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