X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Farm.git;a=blobdiff_plain;f=betty%2Fstartup.s;fp=betty%2Fstartup.s;h=d6b0184641a3d02d4af553c485ad929a4f80e42e;hp=7cf1e107b3c222dc9faf006a31bf28d801b62dc4;hb=ac35214abd7d42a7294047d1c8b7ce7552a38fbf;hpb=6543545b048b7059941b0f6680227ec4ce26535e diff --git a/betty/startup.s b/betty/startup.s index 7cf1e10..d6b0184 100644 --- a/betty/startup.s +++ b/betty/startup.s @@ -50,18 +50,26 @@ # exception handling must go to the very beginning - b handler_reset - b interrupt_handler_undef_instruction - b interrupt_handler_soft_ir - b interrupt_handler_prefetch_abort - b interrupt_handler_data_abort + ldr pc, handler_reset + ldr pc, handler_undef_instruction + ldr pc, handler_soft_ir + ldr pc, handler_prefetch_abort + ldr pc, handler_data_abort nop - b interrupt_handler_irq - b interrupt_handler_fiq + ldr pc, handler_irq + ldr pc, handler_fiq + +handler_reset: .word handle_reset +handler_undef_instruction: .word interrupt_handler_undef_instruction +handler_soft_ir: .word interrupt_handler_soft_ir +handler_prefetch_abort: .word interrupt_handler_prefetch_abort +handler_data_abort: .word interrupt_handler_data_abort +handler_irq: .word interrupt_handler_irq +handler_fiq: .word interrupt_handler_fiq # reset handling goes here -handler_reset: +handle_reset: # init stack pointer for each mode + set stack limit