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implement _cu_memset in AArch64

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mykola2312 2022-05-19 01:59:11 +03:00
parent 66ecb9d7e4
commit ea5ab7aa5d
1 changed files with 25 additions and 0 deletions
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arch/AArch64.S
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@ -102,6 +102,31 @@ _cu_memcmp:
ret ret
_cu_memset: _cu_memset:
// x0 - dst, x1 - val, x2 - size
orr x4, x1, x1, lsl #0
orr x4, x4, x1, lsl #8
orr x4, x4, x1, lsl #16
orr x4, x4, x1, lsl #24
orr x4, x4, x1, lsl #32
orr x4, x4, x1, lsl #40
orr x4, x4, x1, lsl #48
orr x4, x4, x1, lsl #56
mov x3, x2, lsr #3
tst x3, x3
beq .set1_
.set8:
str x4, [x0], #8
subs x3, x3, #1
bne .set8
.set1_:
and x3, x2, #7
beq .set0
.set1:
strb w4, [x0], #1
subs x3, x3, #1
bne .set1
.set0:
ret ret
cu_memzero: cu_memzero: