arm 汇编 dump buff data

dump_buff:

STMFD SP!, {r0-r12, lr}

ldr r2, =_start

mov r3, #1

mov r4, #17

dump_next_word:

ldr r0, r2, #4

bl printhex8

mov r0, #0x20

bl printch

tst r3, #0x03

bne skip_next

mov r0, #0x0a

bl printch

skip_next:

add r3, r3, #1

cmp r3, r4

bne dump_next_word

LDMFD SP!, {R0-R12, PC}