mini/utils_asm.S
2008-12-28 14:35:37 +01:00

63 lines
658 B
ArmAsm

.arm
.globl memcpy32
.globl memcpy16
.globl memcpy8
.globl memset32
.globl memset16
.globl memset8
.text
memcpy32:
bics r2, #3
bxeq lr
1: ldr r3, [r1],#4
str r3, [r0],#4
subs r2, #4
bne 1b
bx lr
memset32:
bics r2, #3
bxeq lr
1: str r1, [r0],#4
subs r2, #4
bne 1b
bx lr
memcpy16:
bics r2, #1
bxeq lr
1: ldr r3, [r1],#2
str r3, [r0],#2
subs r2, #2
bne 1b
bx lr
memset16:
bics r2, #1
bxeq lr
1: str r1, [r0],#2
subs r2, #2
bne 1b
bx lr
memcpy8:
cmp r2, #0
bxeq lr
1: ldr r3, [r1],#1
str r3, [r0],#1
subs r2, #1
bne 1b
bx lr
memset8:
cmp r2, #0
bxeq lr
1: str r1, [r0],#1
subs r2, #1
bne 1b
bx lr