34 lines
781 B
ArmAsm
34 lines
781 B
ArmAsm
/*
|
|
* arch/arm/mach-ebsa110/include/mach/entry-macro.S
|
|
*
|
|
* Low-level IRQ helper macros for ebsa110 platform.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
|
|
|
|
#define IRQ_STAT 0xff000000 /* read */
|
|
|
|
.macro get_irqnr_preamble, base, tmp
|
|
mov \base, #IRQ_STAT
|
|
.endm
|
|
|
|
.macro get_irqnr_and_base, irqnr, stat, base, tmp
|
|
ldrb \stat, [\base] @ get interrupts
|
|
mov \irqnr, #0
|
|
tst \stat, #15
|
|
addeq \irqnr, \irqnr, #4
|
|
moveq \stat, \stat, lsr #4
|
|
tst \stat, #3
|
|
addeq \irqnr, \irqnr, #2
|
|
moveq \stat, \stat, lsr #2
|
|
tst \stat, #1
|
|
addeq \irqnr, \irqnr, #1
|
|
moveq \stat, \stat, lsr #1
|
|
tst \stat, #1 @ bit 0 should be set
|
|
.endm
|
|
|