📄 udiv10.s
字号:
; generated by ARM divc
CODE32
AREA |div10$code|, CODE, READONLY
EXPORT udiv10
udiv10
; takes argument in a1
; returns quotient in a1, remainder in a2
; cycles could be saved if only divide or remainder is required
SUB a2, a1, #10
SUB a1, a1, a1, lsr #2
ADD a1, a1, a1, lsr #4
ADD a1, a1, a1, lsr #8
ADD a1, a1, a1, lsr #16
MOV a1, a1, lsr #3
ADD a3, a1, a1, lsl #2
SUBS a2, a2, a3, lsl #1
ADDPL a1, a1, #1
ADDMI a2, a2, #10
MOV pc, lr
END
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -