48 lines
1.2 KiB
ArmAsm
48 lines
1.2 KiB
ArmAsm
/*
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* include/asm-arm/arch-sa1100/entry-macro.S
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*
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* Low-level IRQ helper macros for SA1100-based platforms
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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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.macro disable_fiq
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.endm
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.macro get_irqnr_preamble, base, tmp
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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mov r4, #0xfa000000 @ ICIP = 0xfa050000
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add r4, r4, #0x00050000
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ldr \irqstat, [r4] @ get irqs
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ldr \irqnr, [r4, #4] @ ICMR = 0xfa050004
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ands \irqstat, \irqstat, \irqnr
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mov \irqnr, #0
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beq 1001f
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tst \irqstat, #0xff
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moveq \irqstat, \irqstat, lsr #8
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addeq \irqnr, \irqnr, #8
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tsteq \irqstat, #0xff
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moveq \irqstat, \irqstat, lsr #8
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addeq \irqnr, \irqnr, #8
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tsteq \irqstat, #0xff
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moveq \irqstat, \irqstat, lsr #8
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addeq \irqnr, \irqnr, #8
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tst \irqstat, #0x0f
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moveq \irqstat, \irqstat, lsr #4
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addeq \irqnr, \irqnr, #4
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tst \irqstat, #0x03
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moveq \irqstat, \irqstat, lsr #2
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addeq \irqnr, \irqnr, #2
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tst \irqstat, #0x01
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addeqs \irqnr, \irqnr, #1
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1001:
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.endm
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