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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [armnommu/] [lib/] [irqs-acorn.S] - Rev 1782
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/** linux/arch/arm/lib/irqs.S** Copyright (C) 1995, 1996 Russell King. (rmk@ecs.soton.ac.uk)** Interrupt wrappers - handles disabling & re-enabling interrupts** Changes:* 09/02/1996 RMK Stream-lined normal interrupt wrapper - now uses 78* cycles instead of 85 and 3 less instructions.* 08/09/1996 RMK Changed spec - now does not allow for disable & enable* of the executing interrupt.* IRQ13 is special - it always is entered with IRQs disabled.* IRQ14 & 15 are special - the IRQ is disabled in IOC* but interrupts are enabled. It is expected that the* interrupt routine will re-enable the relevent IRQ...*/#include <asm/assembler.h>@ IRQ stubs@ IRQ stubs entered with:@ r1 = IOC@ r2 = IRQ number@ return 0 for normal irq.text#define BAD_IRQ(n, msk, reg) \.global _bad_IRQ##n##_interrupt ;\_bad_IRQ##n##_interrupt: ;\stmfd sp!, {lr} ;\ldrb r0, [r4, $reg] ;\bic r0, r0, $msk ;\strb r0, [r4, $reg] ;\bl _bad_IRQ ;\mov r0, $1 ;\LOADREGS(fd, sp!, {pc})BAD_IRQ( 0, 0x01, 0x18)BAD_IRQ( 1, 0x02, 0x18)BAD_IRQ( 2, 0x04, 0x18)BAD_IRQ( 3, 0x08, 0x18)BAD_IRQ( 4, 0x10, 0x18)BAD_IRQ( 5, 0x20, 0x18)BAD_IRQ( 6, 0x40, 0x18)BAD_IRQ( 7, 0x80, 0x18)BAD_IRQ( 8, 0x01, 0x28)BAD_IRQ( 9, 0x02, 0x28)BAD_IRQ(10, 0x04, 0x28)BAD_IRQ(11, 0x08, 0x28)BAD_IRQ(12, 0x10, 0x28)BAD_IRQ(13, 0x20, 0x28)BAD_IRQ(14, 0x40, 0x28)BAD_IRQ(15, 0x80, 0x28)BAD_IRQ(16, 0x01, 0x1f8)BAD_IRQ(17, 0x02, 0x1f8)BAD_IRQ(18, 0x04, 0x1f8)BAD_IRQ(19, 0x08, 0x1f8)BAD_IRQ(20, 0x10, 0x1f8)BAD_IRQ(21, 0x20, 0x1f8)BAD_IRQ(22, 0x40, 0x1f8)BAD_IRQ(23, 0x80, 0x1f8)#define FAST_IRQ8(n) \.globl _fast_IRQ##n##_interrupt ;\_fast_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x18] ;\bic r2, r2, $1 << n ;\strb r2, [r4, $0x18] ;\mov r6, $1 << n ;\strb r6, [r4, $0x14] ;\ldr r5, LC1 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\bl _do_fast_IRQ ;\DISABLEIRQS(r0) ;\str r7, [r5] ;\ldrb r0, [r4, $0x18] ;\orr r0, r0, $1 << n ;\strb r0, [r4, $0x18] ;\mov r0, $1 ;\RETINSTR(mov,pc,r9)#define FAST_IRQ16(n) \.globl _fast_IRQ##n##_interrupt ;\_fast_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x28] ;\bic r2, r2, $1 << (n - 8) ;\strb r2, [r4, $0x28] ;\ldr r5, LC1 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\bl _do_fast_IRQ ;\DISABLEIRQS(r0) ;\str r7, [r5] ;\ldrb r0, [r4, $0x28] ;\orr r0, r0, $1 << (n - 8) ;\strb r0, [r4, $0x28] ;\mov r0, $1 ;\RETINSTR(mov,pc,r9)#define FAST_IRQ24(n) \.globl _fast_IRQ##n##_interrupt ;\_fast_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x1f8] ;\bic r2, r2, $1 << (n - 16) ;\strb r2, [r4, $0x1f8] ;\ldr r5, LC1 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\bl _do_fast_IRQ ;\DISABLEIRQS(r0) ;\str r7, [r5] ;\ldrb r0, [r4, $0x1f8] ;\orr r0, r0, $1 << (n - 16) ;\strb r0, [r4, $0x1f8] ;\mov r0, $1 ;\RETINSTR(mov,pc,r9)FAST_IRQ8 ( 0)FAST_IRQ8 ( 1)FAST_IRQ8 ( 2)FAST_IRQ8 ( 3)FAST_IRQ8 ( 4)FAST_IRQ8 ( 5)FAST_IRQ8 ( 6)FAST_IRQ8 ( 7)FAST_IRQ16( 8)FAST_IRQ16( 9)FAST_IRQ16(10)FAST_IRQ16(11)FAST_IRQ16(12)LC1: .word _intr_count.globl _fast_IRQ13_interrupt_fast_IRQ13_interrupt:mov r9, lrldr r5, LC1ldr r7, [r5]add r2, r7, #1str r2, [r5]bl _do_fast_IRQstr r7, [r5]mov r0, #1RETINSTR(mov,pc,r9).globl _fast_IRQ14_interrupt_fast_IRQ14_interrupt:mov r9, lrldrb r2, [r4, #0x28]bic r2, r2, #1 << 6strb r2, [r4, #0x28]ldr r5, LC1ldr r7, [r5]add r2, r7, #1str r2, [r5]bl _do_fast_IRQstr r7, [r5]mov r0, #1RETINSTR(mov,pc,r9)FAST_IRQ16(15)FAST_IRQ24(16)FAST_IRQ24(17)FAST_IRQ24(18)FAST_IRQ24(19)FAST_IRQ24(20)FAST_IRQ24(21)FAST_IRQ24(22)FAST_IRQ24(23)#define NORM_IRQ8(n) \.global _IRQ##n##_interrupt ;\_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x18] ;\bic r2, r2, $1 << n ;\strb r2, [r4, $0x18] ;\mov r6, $1 << n ;\strb r6, [r4, $0x14] ;\ldr r5, LC2 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\ENABLEIRQS(r2) ;\bl _do_IRQ ;\DISABLEIRQS(r0) ;\str r7, [r5] ;\ldrb r0, [r4, $0x18] ;\orr r0, r0, $1 << n ;\strb r0, [r4, $0x18] ;\mov r0, $0 ;\RETINSTR(mov,pc,r9)#define NORM_IRQ16(n) \.global _IRQ##n##_interrupt ;\_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x28] ;\bic r2, r2, $1 << (n - 8) ;\strb r2, [r4, $0x28] ;\ldr r5, LC2 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\ENABLEIRQS(r2) ;\bl _do_IRQ ;\DISABLEIRQS(r2) ;\str r7, [r5] ;\ldrb r0, [r4, $0x28] ;\orr r0, r0, $1 << (n - 8) ;\strb r0, [r4, $0x28] ;\mov r0, $0 ;\RETINSTR(mov,pc,r9)#define NORM_IRQ24(n) \.globl _IRQ##n##_interrupt ;\_IRQ##n##_interrupt: ;\mov r9, lr ;\ldrb r2, [r4, $0x1f8] ;\bic r2, r2, $1 << (n - 16) ;\strb r2, [r4, $0x1f8] ;\ldr r5, LC2 ;\ldr r7, [r5] ;\add r2, r7, $1 ;\str r2, [r5] ;\ENABLEIRQS(r2) ;\bl _do_IRQ ;\DISABLEIRQS(r2) ;\str r7, [r5] ;\ldrb r0, [r4, $0x1f8] ;\orr r0, r0, $1 << (n - 16) ;\strb r0, [r4, $0x1f8] ;\mov r0, $0 ;\RETINSTR(mov,pc,r9)NORM_IRQ8 ( 0)NORM_IRQ8 ( 1)NORM_IRQ8 ( 2)NORM_IRQ8 ( 3)NORM_IRQ8 ( 4).globl _timer_IRQ_interrupt_timer_IRQ_interrupt:mov r9, lrldrb r2, [r4, #0x18]bic r2, r2, #1 << 5strb r2, [r4, #0x18]mov r2, #1 << 5strb r2, [r4, #0x14]ldr r5, LC1ldr r7, [r5]add r2, r7, #1str r2, [r5]bl _do_IRQstr r7, [r5]ldrb r2, [r4, #0x18]orr r2, r2, #1 << 5strb r2, [r4, #0x18]mov r0, #0RETINSTR(mov,pc,r9)NORM_IRQ8 ( 6)NORM_IRQ8 ( 7)NORM_IRQ16( 8)NORM_IRQ16( 9)NORM_IRQ16(10)NORM_IRQ16(11)NORM_IRQ16(12)LC2: .word _intr_count.globl _IRQ13_interrupt_IRQ13_interrupt:mov r9, lrldr r5, LC2ldr r7, [r5]add r2, r7, #1str r2, [r5]bl _do_IRQstr r7, [r5]mov r0, #0RETINSTR(mov,pc,r9).globl _IRQ14_interrupt_IRQ14_interrupt:mov r9, lrldrb r2, [r4, #0x28]bic r2, r2, #1 << 6strb r2, [r4, #0x28]ldr r5, LC2ldr r7, [r5]add r2, r7, #1str r2, [r5]bl _do_IRQstr r7, [r5]mov r0, #0RETINSTR(mov,pc,r9)NORM_IRQ16(15)NORM_IRQ24(16)NORM_IRQ24(17)NORM_IRQ24(18)NORM_IRQ24(19)NORM_IRQ24(20)NORM_IRQ24(21)NORM_IRQ24(22)NORM_IRQ24(23)#define PROBE_IRQ8(n, v1) \.global _probe_IRQ##n##_interrupt ;\_probe_IRQ##n##_interrupt: ;\ldrb r0, [r4, $0x18] ;\bic r0, r0, $ v1 ;\strb r0, [r4, $0x18] ;\mov r0, $ v1 ;\strb r0, [r4, $0x14] ;\mov r0, $1 ;\RETINSTR(mov,pc,lr)#define PROBE_IRQ16(n, v1) \.global _probe_IRQ##n##_interrupt ;\_probe_IRQ##n##_interrupt: ;\ldrb r0, [r4, $0x28] ;\bic r0, r0, $ v1 ;\strb r0, [r4, $0x28] ;\mov r0, $1 ;\RETINSTR(mov,pc,lr)#define PROBE_IRQ24(n, v1) \.global _probe_IRQ##n##_interrupt ;\_probe_IRQ##n##_interrupt: ;\ldrb r0, [r4, $0x1f8] ;\bic r0, r0, $ v1 ;\strb r0, [r4, $0x1f8] ;\mov r0, $1 ;\RETINSTR(mov,pc,lr)PROBE_IRQ8 ( 0, 1)PROBE_IRQ8 ( 1, 2)PROBE_IRQ8 ( 2, 4)PROBE_IRQ8 ( 3, 8)PROBE_IRQ8 ( 4, 16)PROBE_IRQ8 ( 5, 32)PROBE_IRQ8 ( 6, 64)PROBE_IRQ8 ( 7, 128)PROBE_IRQ16( 8, 1)PROBE_IRQ16( 9, 2)PROBE_IRQ16(10, 4)PROBE_IRQ16(11, 8)PROBE_IRQ16(12, 16)PROBE_IRQ16(13, 32)PROBE_IRQ16(14, 64)PROBE_IRQ16(15, 128)PROBE_IRQ24(16, 1)PROBE_IRQ24(17, 2)PROBE_IRQ24(18, 4)PROBE_IRQ24(19, 8)PROBE_IRQ24(20, 16)PROBE_IRQ24(21, 32)PROBE_IRQ24(22, 64)PROBE_IRQ24(23, 128).global _bad_IRQ_bad_IRQ: adr r0, Lmsgmov r1, r2b _printkLmsg: .ascii "Bad interrupt %d received!\n\0".align