.section ".interrupt_vectors.text"

.global abort_handler
.local generic_handler
.global _interrupt_vectors
_interrupt_vectors:
    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
	b reset_handler_caller
	b undef_handler_caller
	b svc_handler_caller
	b abort_handler_caller
	b abort_handler_caller
	b generic_handler_caller
	b irq_handler_caller
	b fiq_handler_caller

reset_handler_caller:
	ldr sp, =_supervisor_stack_top
	ldr r5, =reset_handler
	bx r5

undef_handler_caller:
	ldr sp, =_supervisor_stack_top
	ldr r5, =undefined_instruction_vector
	bx r5

svc_handler_caller:
	ldr sp, =_supervisor_stack_top
	push {r5, lr}
	ldr r5, =supervisor_call_handler
	blx r5
	ldm sp!, {r5, pc} ^

abort_handler_caller:
	ldr sp, =_supervisor_stack_top
	ldr r5, =abort_handler
	bx r5

generic_handler_caller:
	ldr sp, =_supervisor_stack_top
	ldr r5, =generic_handler
	bx r5

irq_handler_caller:
	ldr sp, =_irq_stack_top
	sub lr, #4
	push {r0-r3, lr}
	ldr r3, =irq_handler
	blx r3
	ldm sp!, {r0-r3, pc} ^

fiq_handler_caller:
	ldr sp, =_fiq_stack_top
	ldr r5, =fiq_handler
	bx r5


irq:
	mov sp, #0x8000
	ldr r5, =abort_handler
    subs pc,lr,#4