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| author | vetch <vetch97@gmail.com> | 2020-01-02 17:49:42 +0100 |
|---|---|---|
| committer | vetch <vetch97@gmail.com> | 2020-01-02 17:49:42 +0100 |
| commit | 8d08aa3662ed44ef2f4b35b1e79f44adaf3229c9 (patch) | |
| tree | b803375047e56d8b9b0669e032a88edb18ff9d99 /interrupt_vector.S | |
| parent | 5cb10bcc7d0c6d4159103f05ba228a09ca365fac (diff) | |
| download | rpi-MMU-example-8d08aa3662ed44ef2f4b35b1e79f44adaf3229c9.tar.gz rpi-MMU-example-8d08aa3662ed44ef2f4b35b1e79f44adaf3229c9.zip | |
update, may not work now
Diffstat (limited to 'interrupt_vector.S')
| -rw-r--r-- | interrupt_vector.S | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/interrupt_vector.S b/interrupt_vector.S index f71330b..3daef05 100644 --- a/interrupt_vector.S +++ b/interrupt_vector.S @@ -1,16 +1,42 @@ .section ".interrupt_vectors.text" .global abort_handler +.global irq_handler .local generic_handler .global _interrupt_vectors + _interrupt_vectors: - b generic_handler - b generic_handler - b generic_handler - b abort_handler_caller - b abort_handler_caller - b generic_handler - b generic_handler + ldr pc,reset_handler + ldr pc,undefined_handler + ldr pc,swi_handler + ldr pc,prefetch_handler + ldr pc,data_handler + ldr pc,unused_handler + ldr pc,irq_handler_caller + ldr pc,fiq_handler + reset_handler: .word abort + undefined_handler: .word abort + swi_handler: .word abort + prefetch_handler: .word abort + data_handler: .word abort + unused_handler: .word abort + irq_handler_caller: .word irq + fiq_handler: .word abort + //b abort_handler_caller + //b abort_handler_caller + //b abort_handler_caller + //b abort_handler_caller + //b abort_handler_caller + //b abort_handler_caller + //b abort_handler_caller + + +.globl enable_irq +enable_irq: + mrs r0,cpsr + bic r0,r0,#0x80 + msr cpsr_c,r0 + bx lr generic_handler: b generic_handler @@ -18,3 +44,7 @@ abort_handler_caller: mov sp, #0x8000 ldr r5, =abort_handler bx r5 +irq: + mov sp, #0x8000 + ldr r5, =abort_handler + subs pc,lr,#4
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