34 lines
781 B
ArmAsm
34 lines
781 B
ArmAsm
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/*
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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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