diff options
Diffstat (limited to 'src/boot.S')
| -rw-r--r-- | src/boot.S | 49 |
1 files changed, 43 insertions, 6 deletions
@@ -66,6 +66,37 @@ io_halt: wfi b io_halt +io_halt_undefined: + ldr r0, =undefined_msg + ldr r0, [r0] + bl uart_char + b io_halt +io_halt_swi: + ldr r0, =swi_msg + ldr r0, [r0] + bl uart_char + b io_halt +io_halt_prefetch: + ldr r0, =prefetch_msg + ldr r0, [r0] + bl uart_char + b io_halt +io_halt_data: + ldr r0, =data_msg + ldr r0, [r0] + bl uart_char + b io_halt +io_halt_unused: + ldr r0, =unused_msg + ldr r0, [r0] + bl uart_char + b io_halt +io_halt_fiq: + ldr r0, =fiq_msg + ldr r0, [r0] + bl uart_char + b io_halt + .align 5 vector: ldr pc, reset_handler @@ -78,10 +109,16 @@ vector: ldr pc, fiq_handler reset_handler: .word reset -undefined_handler: .word io_halt -swi_handler: .word io_halt -prefetch_handler: .word io_halt -data_handler: .word io_halt -unused_handler: .word io_halt +undefined_handler: .word io_halt_undefined +swi_handler: .word io_halt_swi +prefetch_handler: .word io_halt_prefetch +data_handler: .word io_halt_data +unused_handler: .word io_halt_unused irq_handler: .word irq -fiq_handler: .word io_halt // fiq +fiq_handler: .word io_halt_fiq +undefined_msg: .asciz "Undefined\n" +swi_msg: .asciz "SWI\n" +prefetch_msg: .asciz "Prefetch\n" +data_msg: .asciz "Data\n" +unused_msg: .asciz "unused\n" +fiq_msg: .asciz "FIQ\n" |