From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/arm/mach-orion5x/include/mach/entry-macro.S | 25 ++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/arm/mach-orion5x/include/mach/entry-macro.S (limited to 'arch/arm/mach-orion5x/include/mach/entry-macro.S') diff --git a/arch/arm/mach-orion5x/include/mach/entry-macro.S b/arch/arm/mach-orion5x/include/mach/entry-macro.S new file mode 100644 index 000000000..79eb502a1 --- /dev/null +++ b/arch/arm/mach-orion5x/include/mach/entry-macro.S @@ -0,0 +1,25 @@ +/* + * arch/arm/mach-orion5x/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for Orion 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 + + .macro get_irqnr_preamble, base, tmp + ldr \base, =MAIN_IRQ_CAUSE + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, [\base, #0] @ main cause + ldr \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask + mov \irqnr, #0 @ default irqnr + @ find cause bits that are unmasked + ands \irqstat, \irqstat, \tmp @ clear Z flag if any + clzne \irqnr, \irqstat @ calc irqnr + rsbne \irqnr, \irqnr, #31 + .endm -- cgit v1.2.3-54-g00ecf