30 lines
499 B
ArmAsm
30 lines
499 B
ArmAsm
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//+build !noasm
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//+build !appengine
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//+build !gccgo
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// func xorSliceNEON(in, out []byte)
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TEXT ·xorSliceNEON(SB), 7, $0
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MOVD in_base+0(FP), R1
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MOVD in_len+8(FP), R2 // length of message
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MOVD out_base+24(FP), R5
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SUBS $32, R2
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BMI completeXor
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loopXor:
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// Main loop
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VLD1.P 32(R1), [V0.B16, V1.B16]
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VLD1 (R5), [V20.B16, V21.B16]
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VEOR V20.B16, V0.B16, V4.B16
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VEOR V21.B16, V1.B16, V5.B16
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// Store result
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VST1.P [V4.D2, V5.D2], 32(R5)
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SUBS $32, R2
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BPL loopXor
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completeXor:
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RET
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