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/*
* PXA255 Interrupt handler by Yang Xi <hiyangxi@gmail.com>
* Copyright (c) 2004 by Jay Monkman <jtm@lopgindog.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#define __asm__
.globl bsp_interrupt_dispatch
bsp_interrupt_dispatch :
/*
* Look at interrupt status register to determine source.
* From source, determine offset into expanded vector table
* and load vector into r0 and handler address into r1.
*/
ldr r0,=0x40d00000
ldr r1,[r0]
clz r0,r1
cmp r0,#32
moveq pc,lr /*All zeros*/
mov r2,#31
sub r0,r2,r0
ldr r2,=IRQ_table
add r2,r2,r0,LSL #2
ldr r1,[r2]
mov pc,r1
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