29 lines
487 B
ArmAsm
29 lines
487 B
ArmAsm
|
.syntax unified
|
||
|
|
.cpu cortex-m4
|
||
|
|
.thumb
|
||
|
|
.text
|
||
|
|
.align 2
|
||
|
|
.global delay_ms
|
||
|
|
.thumb
|
||
|
|
.thumb_func
|
||
|
|
.type delay_ms, %function
|
||
|
|
@ void delay_ms(int ms)
|
||
|
|
delay_ms:
|
||
|
|
@ r0 is argument, trashes r2, r3
|
||
|
|
adds r3, r0, #0
|
||
|
|
b .L2
|
||
|
|
.L5:
|
||
|
|
movw r2, #55999
|
||
|
|
b .L3
|
||
|
|
.L4:
|
||
|
|
subs r2, r2, #1
|
||
|
|
.L3:
|
||
|
|
cmp r2, #0
|
||
|
|
bgt .L4
|
||
|
|
subs r3, r3, #1
|
||
|
|
.L2:
|
||
|
|
cmp r3, #0
|
||
|
|
bgt .L5
|
||
|
|
bx lr
|
||
|
|
.size delay_ms, .-delay_ms
|