diff options
Diffstat (limited to 'c/src/lib/libcpu/arm/mc9328mxl/irq/bsp_irq_asm.S')
| -rw-r--r-- | c/src/lib/libcpu/arm/mc9328mxl/irq/bsp_irq_asm.S | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/c/src/lib/libcpu/arm/mc9328mxl/irq/bsp_irq_asm.S b/c/src/lib/libcpu/arm/mc9328mxl/irq/bsp_irq_asm.S deleted file mode 100644 index c2a33c4b22..0000000000 --- a/c/src/lib/libcpu/arm/mc9328mxl/irq/bsp_irq_asm.S +++ /dev/null @@ -1,47 +0,0 @@ -/* - * MC9328MXL Intererrupt handler - * - * Copyright (c) 2002 by Jay Monkman <jtm@lopingdog.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__ - -/* - * BSP specific interrupt handler for INT or FIQ. In here - * you do determine which interrupt happened and call its - * handler. - */ - .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 handler address into r0. - */ - ldr r0, =0x00223040 /* Read the vector number */ - ldr r1, [r0] - mov r1, r1, LSR #16 /* get the NIVECTOR into 16 LSbits */ - - /* find the ISR's address based on the vector */ - ldr r0, =bsp_vector_table - mov r1, r1, LSL #3 /* Shift vector to get offset into table */ - add r1, r0, r1 /* r1 has address of vector entry */ - ldr r0, [r1, #4] /* Get the data pointer */ - ldr r1, [r1] /* Get the vector */ - - stmdb sp!,{lr} - ldr lr, =IRQ_return /* prepare the return from handler */ - - mov pc, r1 /* EXECUTE INT HANDLER */ - -IRQ_return: - ldmia sp!,{lr} - - mov pc, lr |