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33 lines
781 B
33 lines
781 B
/* |
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* arch/arm/mach-ebsa110/include/mach/entry-macro.S |
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* |
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* Low-level IRQ helper macros for ebsa110 platform. |
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* |
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* This file is licensed under the terms of the GNU General Public |
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* License version 2. This program is licensed "as is" without any |
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* warranty of any kind, whether express or implied. |
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*/ |
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#define IRQ_STAT 0xff000000 /* read */ |
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.macro get_irqnr_preamble, base, tmp |
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mov \base, #IRQ_STAT |
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.endm |
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.macro get_irqnr_and_base, irqnr, stat, base, tmp |
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ldrb \stat, [\base] @ get interrupts |
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mov \irqnr, #0 |
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tst \stat, #15 |
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addeq \irqnr, \irqnr, #4 |
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moveq \stat, \stat, lsr #4 |
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tst \stat, #3 |
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addeq \irqnr, \irqnr, #2 |
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moveq \stat, \stat, lsr #2 |
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tst \stat, #1 |
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addeq \irqnr, \irqnr, #1 |
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moveq \stat, \stat, lsr #1 |
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tst \stat, #1 @ bit 0 should be set |
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.endm |
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