42 lines
1.1 KiB
ArmAsm
42 lines
1.1 KiB
ArmAsm
/*
|
|
* arch/arm/mach-sa1100/include/mach/entry-macro.S
|
|
*
|
|
* Low-level IRQ helper macros for SA1100-based platforms
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
.macro get_irqnr_preamble, base, tmp
|
|
mov \base, #0xfa000000 @ ICIP = 0xfa050000
|
|
add \base, \base, #0x00050000
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
|
|
ldr \irqstat, [\base] @ get irqs
|
|
ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004
|
|
ands \irqstat, \irqstat, \irqnr
|
|
mov \irqnr, #0
|
|
beq 1001f
|
|
tst \irqstat, #0xff
|
|
moveq \irqstat, \irqstat, lsr #8
|
|
addeq \irqnr, \irqnr, #8
|
|
tsteq \irqstat, #0xff
|
|
moveq \irqstat, \irqstat, lsr #8
|
|
addeq \irqnr, \irqnr, #8
|
|
tsteq \irqstat, #0xff
|
|
moveq \irqstat, \irqstat, lsr #8
|
|
addeq \irqnr, \irqnr, #8
|
|
tst \irqstat, #0x0f
|
|
moveq \irqstat, \irqstat, lsr #4
|
|
addeq \irqnr, \irqnr, #4
|
|
tst \irqstat, #0x03
|
|
moveq \irqstat, \irqstat, lsr #2
|
|
addeq \irqnr, \irqnr, #2
|
|
tst \irqstat, #0x01
|
|
addeqs \irqnr, \irqnr, #1
|
|
1001:
|
|
.endm
|
|
|