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internal/subtle: try s390x vector

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Sun Yimin 2024-08-20 10:02:42 +08:00 committed by GitHub
parent 6925a64c6c
commit b6821a6853
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1 changed files with 14 additions and 2 deletions
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16
internal/subtle/xor_s390x.s
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@ -14,15 +14,26 @@ TEXT ·xorBytes(SB),NOSPLIT,$0-32
MOVD n+24(FP), R4 MOVD n+24(FP), R4
MOVD $0, R5 MOVD $0, R5
CMPBLT R4, $16, less_than16
loop16b:
VL 0(R2)(R5*1), V0
VL 0(R3)(R5*1), V1
VX V0, V1, V2
VST V2, 0(R1)(R5*1)
LAY 16(R5), R5
SUB $16, R4
CMPBGE R4, $16, loop16b
less_than16:
CMPBLT R4, $8, tail CMPBLT R4, $8, tail
loop:
MOVD 0(R2)(R5*1), R7 MOVD 0(R2)(R5*1), R7
MOVD 0(R3)(R5*1), R8 MOVD 0(R3)(R5*1), R8
XOR R7, R8 XOR R7, R8
MOVD R8, 0(R1)(R5*1) MOVD R8, 0(R1)(R5*1)
LAY 8(R5), R5 LAY 8(R5), R5
SUB $8, R4 SUB $8, R4
CMPBGE R4, $8, loop
tail: tail:
CMPBEQ R4, $0, done CMPBEQ R4, $0, done
MOVB 0(R2)(R5*1), R7 MOVB 0(R2)(R5*1), R7
@ -32,5 +43,6 @@ tail:
LAY 1(R5), R5 LAY 1(R5), R5
SUB $1, R4 SUB $1, R4
BR tail BR tail
done: done:
RET RET