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cipher: xts arm64

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Sun Yimin 2023-08-21 10:22:46 +08:00 committed by GitHub
parent bf355a1ea3
commit de8c35e0f1
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5 changed files with 157 additions and 7 deletions
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2
.github/workflows/test_qemu.yml vendored
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@ -30,7 +30,7 @@ jobs:
uses: actions/checkout@v3
- name: Test
run: go test -v -short ./...
run: go test -v -short ./cipher/...
env:
DISABLE_SM3NI: 1
DISABLE_SM4NI: 1

150
cipher/xts_arm64.s Normal file
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@ -0,0 +1,150 @@
//go:build arm64 && !purego
// +build arm64,!purego
#include "textflag.h"
#define B0 V0
#define T1 V1
#define T2 V2
#define POLY V3
#define ZERO V4
#define tweak R0
#define GB R1
#define I R2
// func mul2(tweak *[blockSize]byte, isGB bool)
TEXT ·mul2(SB),NOSPLIT,$0
MOVD tweak+0(FP), tweak
MOVB isGB+8(FP), GB
VLD1 (tweak), [B0.B16]
VEOR POLY.B16, POLY.B16, POLY.B16
VEOR ZERO.B16, ZERO.B16, ZERO.B16
CMP $1, GB
BEQ gb_alg
MOVD $0x87, I
VMOV I, POLY.D[0]
VMOV B0.D[1], I
ASR $63, I
VMOV I, T1.D[0]
VMOV I, T1.D[1]
VAND POLY.B16, T1.B16, T1.B16
VUSHR $63, B0.D2, T2.D2
VEXT $8, T2.B16, ZERO.B16, T2.B16
VSHL $1, B0.D2, B0.D2
VEOR T1.B16, B0.B16, B0.B16
VEOR T2.B16, B0.B16, B0.B16
VST1 [B0.B16], (tweak)
RET
gb_alg:
MOVD $0xE1, I
LSL $56, I
VMOV I, POLY.D[1]
VREV64 B0.B16, B0.B16
VEXT $8, B0.B16, B0.B16, B0.B16
VMOV B0.D[0], I
LSL $63, I
ASR $63, I
VMOV I, T1.D[0]
VMOV I, T1.D[1]
VAND POLY.B16, T1.B16, T1.B16
VSHL $63, B0.D2, T2.D2
VEXT $8, ZERO.B16, T2.B16, T2.B16
VUSHR $1, B0.D2, B0.D2
VEOR T1.B16, B0.B16, B0.B16
VEOR T2.B16, B0.B16, B0.B16
VEXT $8, B0.B16, B0.B16, B0.B16
VREV64 B0.B16, B0.B16
VST1 [B0.B16], (tweak)
RET
// func doubleTweaks(tweak *[blockSize]byte, tweaks []byte, isGB bool)
TEXT ·doubleTweaks(SB),NOSPLIT,$0
MOVD tweak+0(FP), tweak
MOVD tweaks+8(FP), R3
MOVD tweaks_len+16(FP), R4
MOVB isGB+32(FP), GB
LSR $4, R4
EOR R5, R5
VEOR POLY.B16, POLY.B16, POLY.B16
VEOR ZERO.B16, ZERO.B16, ZERO.B16
VLD1 (tweak), [B0.B16]
CMP $1, GB
BEQ dt_gb_alg
MOVD $0x87, I
VMOV I, POLY.D[0]
loop:
VST1.P [B0.B16], 16(R3)
VMOV B0.D[1], I
ASR $63, I
VMOV I, T1.D[0]
VMOV I, T1.D[1]
VAND POLY.B16, T1.B16, T1.B16
VUSHR $63, B0.D2, T2.D2
VEXT $8, T2.B16, ZERO.B16, T2.B16
VSHL $1, B0.D2, B0.D2
VEOR T1.B16, B0.B16, B0.B16
VEOR T2.B16, B0.B16, B0.B16
ADD $1, R5
CMP R4, R5
BNE loop
VST1 [B0.B16], (tweak)
RET
dt_gb_alg:
MOVD $0xE1, I
LSL $56, I
VMOV I, POLY.D[1]
gb_loop:
VST1.P [B0.B16], 16(R3)
VREV64 B0.B16, B0.B16
VEXT $8, B0.B16, B0.B16, B0.B16
VMOV B0.D[0], I
LSL $63, I
ASR $63, I
VMOV I, T1.D[0]
VMOV I, T1.D[1]
VAND POLY.B16, T1.B16, T1.B16
VSHL $63, B0.D2, T2.D2
VEXT $8, ZERO.B16, T2.B16, T2.B16
VUSHR $1, B0.D2, B0.D2
VEOR T1.B16, B0.B16, B0.B16
VEOR T2.B16, B0.B16, B0.B16
VEXT $8, B0.B16, B0.B16, B0.B16
VREV64 B0.B16, B0.B16
ADD $1, R5
CMP R4, R5
BNE gb_loop
VST1 [B0.B16], (tweak)
RET

4
cipher/xts_asm.go
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@ -1,5 +1,5 @@
//go:build amd64 && !purego
// +build amd64,!purego
//go:build (amd64 && !purego) || (arm64 && !purego)
// +build amd64,!purego arm64,!purego
package cipher

4
cipher/xts_asm_test.go
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@ -1,5 +1,5 @@
//go:build amd64 && !purego
// +build amd64,!purego
//go:build (amd64 && !purego) || (arm64 && !purego)
// +build amd64,!purego arm64,!purego
package cipher

4
cipher/xts_generic.go
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@ -1,5 +1,5 @@
//go:build !amd64 || purego
// +build !amd64 purego
//go:build !amd64 && !arm64 || purego
// +build !amd64,!arm64 purego
package cipher