34 lines
778 B
ArmAsm
34 lines
778 B
ArmAsm
/*
|
|
* linux/include/asm-arm/arch-aaec2000/entry-macro.S
|
|
*
|
|
* Low-level IRQ helper for aaec-2000 based platforms
|
|
*
|
|
* Copyright (c) 2005 Nicolas Bellido Y Ortega
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
.macro disable_fiq
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
|
mov r4, #0xf8000000
|
|
add r4, r4, #0x00000500
|
|
mov \base, r4
|
|
ldr \irqstat, [\base, #0]
|
|
cmp \irqstat, #0
|
|
bne 1001f
|
|
ldr \irqnr, =NR_IRQS+1
|
|
b 1003f
|
|
1001: mov \irqnr, #0
|
|
1002: ands \tmp, \irqstat, #1
|
|
mov \irqstat, \irqstat, LSR #1
|
|
add \irqnr, \irqnr, #1
|
|
beq 1002b
|
|
sub \irqnr, \irqnr, #1
|
|
1003:
|
|
.endm
|