diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2009-06-04 16:33:31 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2009-06-04 16:33:31 +0000 |
| commit | d7a915dadec627b1906fcc22f45f573cd73914a3 (patch) | |
| tree | 44f7096debd2aeb14a339c1c6aad4f562303b4a5 /c/src/lib/libcpu/arm/pxa255/irq/bsp_irq_asm.S | |
| parent | 2009-06-04 Xi Yang <hiyangxi@gmail.com> (diff) | |
| download | rtems-d7a915dadec627b1906fcc22f45f573cd73914a3.tar.bz2 | |
2009-06-04 Xi Yang <hiyangxi@gmail.com>
* Makefile.am, configure.ac, preinstall.am: New Gumstix BSP and PXA255
support.
* pxa255/clock/clock.c, pxa255/ffuart/ffuart.c, pxa255/include/bits.h,
pxa255/include/ffuart.h, pxa255/include/pxa255.h,
pxa255/irq/bsp_irq_asm.S, pxa255/irq/bsp_irq_init.c,
pxa255/irq/irq.c, pxa255/irq/irq.h, pxa255/pmc/pmc.c,
pxa255/timer/timer.c: New files.
Diffstat (limited to '')
| -rwxr-xr-x | c/src/lib/libcpu/arm/pxa255/irq/bsp_irq_asm.S | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/arm/pxa255/irq/bsp_irq_asm.S b/c/src/lib/libcpu/arm/pxa255/irq/bsp_irq_asm.S new file mode 100755 index 0000000000..cda40aa9de --- /dev/null +++ b/c/src/lib/libcpu/arm/pxa255/irq/bsp_irq_asm.S @@ -0,0 +1,33 @@ +/* + * 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.com/license/LICENSE. + * + * $Id$ + */ + +#define __asm__ + + .globl ExecuteITHandler +ExecuteITHandler : +/* + * 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 + + |