/* * include/asm-arm/arch-imx/entry-macro.S * * Low-level IRQ helper macros for iMX-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 .macro disable_fiq .endm .macro get_irqnr_preamble, base, tmp .endm .macro arch_ret_to_user, tmp1, tmp2 .endm #define AITC_NIVECSR 0x40 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp ldr \base, =IO_ADDRESS(IMX_AITC_BASE) @ Load offset & priority of the highest priority @ interrupt pending. ldr \irqstat, [\base, #AITC_NIVECSR] @ Shift off the priority leaving the offset or @ "interrupt number", use arithmetic shift to @ transform illegal source (0xffff) as -1 mov \irqnr, \irqstat, asr #16 adds \tmp, \irqnr, #1 .endm