| /* |
| * arch/arm/mach-lpc32xx/include/mach/entry-macro.S |
| * |
| * Author: Kevin Wells <kevin.wells@nxp.com> |
| * |
| * Copyright (C) 2010 NXP Semiconductors |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <mach/hardware.h> |
| #include <mach/platform.h> |
| |
| #define LPC32XX_INTC_MASKED_STATUS_OFS 0x8 |
| |
| .macro get_irqnr_preamble, base, tmp |
| ldr \base, =IO_ADDRESS(LPC32XX_MIC_BASE) |
| .endm |
| |
| /* |
| * Return IRQ number in irqnr. Also return processor Z flag status in CPSR |
| * as set if an interrupt is pending. |
| */ |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| ldr \irqstat, [\base, #LPC32XX_INTC_MASKED_STATUS_OFS] |
| clz \irqnr, \irqstat |
| rsb \irqnr, \irqnr, #31 |
| teq \irqstat, #0 |
| .endm |
