2022-01-02 11:22:24 +08:00
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#include "textflag.h"
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#define B0 V0
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#define B1 V1
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#define B2 V2
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#define B3 V3
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#define B4 V4
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#define B5 V5
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#define B6 V6
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#define B7 V7
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#define ACC0 V8
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#define ACC1 V9
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#define ACCM V10
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#define T0 V11
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#define T1 V12
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#define T2 V13
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#define T3 V14
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#define POLY V15
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#define ZERO V16
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#define INC V17
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#define CTR V18
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#define K0 V19
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#define K1 V20
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#define K2 V21
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#define K3 V22
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#define K4 V23
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#define K5 V24
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#define K6 V25
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#define K7 V26
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#define K8 V27
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#define K9 V28
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#define K10 V29
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#define K11 V30
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#define KLAST V31
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#define reduce() \
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VEOR ACC0.B16, ACCM.B16, ACCM.B16 \
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VEOR ACC1.B16, ACCM.B16, ACCM.B16 \
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VEXT $8, ZERO.B16, ACCM.B16, T0.B16 \
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VEXT $8, ACCM.B16, ZERO.B16, ACCM.B16 \
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VEOR ACCM.B16, ACC0.B16, ACC0.B16 \
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VEOR T0.B16, ACC1.B16, ACC1.B16 \
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VPMULL POLY.D1, ACC0.D1, T0.Q1 \
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VEXT $8, ACC0.B16, ACC0.B16, ACC0.B16 \
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VEOR T0.B16, ACC0.B16, ACC0.B16 \
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VPMULL POLY.D1, ACC0.D1, T0.Q1 \
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VEOR T0.B16, ACC1.B16, ACC1.B16 \
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VEXT $8, ACC1.B16, ACC1.B16, ACC1.B16 \
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VEOR ACC1.B16, ACC0.B16, ACC0.B16 \
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// func gcmSm4Finish(productTable *[256]byte, tagMask, T *[16]byte, pLen, dLen uint64)
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TEXT ·gcmSm4Finish(SB),NOSPLIT,$0
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#define pTbl R0
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#define tMsk R1
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#define tPtr R2
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#define plen R3
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#define dlen R4
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MOVD $0xC2, R1
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LSL $56, R1
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MOVD $1, R0
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VMOV R1, POLY.D[0]
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VMOV R0, POLY.D[1]
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VEOR ZERO.B16, ZERO.B16, ZERO.B16
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MOVD productTable+0(FP), pTbl
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MOVD tagMask+8(FP), tMsk
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MOVD T+16(FP), tPtr
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MOVD pLen+24(FP), plen
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MOVD dLen+32(FP), dlen
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VLD1 (tPtr), [ACC0.B16]
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VLD1 (tMsk), [B1.B16]
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LSL $3, plen
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LSL $3, dlen
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VMOV dlen, B0.D[0]
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VMOV plen, B0.D[1]
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ADD $14*16, pTbl
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VLD1.P (pTbl), [T1.B16, T2.B16]
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VEOR ACC0.B16, B0.B16, B0.B16
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VEXT $8, B0.B16, B0.B16, T0.B16
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VEOR B0.B16, T0.B16, T0.B16
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VPMULL B0.D1, T1.D1, ACC1.Q1
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VPMULL2 B0.D2, T1.D2, ACC0.Q1
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VPMULL T0.D1, T2.D1, ACCM.Q1
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reduce()
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VREV64 ACC0.B16, ACC0.B16
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VEOR B1.B16, ACC0.B16, ACC0.B16
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VST1 [ACC0.B16], (tPtr)
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RET
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#undef pTbl
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#undef tMsk
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#undef tPtr
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#undef plen
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#undef dlen
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2022-01-12 16:06:39 +08:00
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#define SM4_SBOX(x, y, z, z1, z2) \
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2022-01-12 16:40:19 +08:00
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MOVD $0x0F0F0F0F0F0F0F0F, R19; \
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VMOV R19, z1.D2; \ // nibble mask
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VAND x.B16, z1.B16, z2.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0x9197E2E474720701, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[0]; \
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2022-01-12 16:06:39 +08:00
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MOVD $0xC7C1B4B222245157, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // m1 low
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2022-01-12 16:40:19 +08:00
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VTBL z2.B16, [z.B16], y.B16; \
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VUSHR $4, x.D2, x.D2; \
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VAND x.B16, z1.B16, z2.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0xE240AB09EB49A200, R19; \
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VMOV R19, z.D[0]; \
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MOVD $0xF052B91BF95BB012, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // m1 high
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2022-01-12 16:40:19 +08:00
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VTBL z2.B16, [z.B16], z2.B16; \
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VEOR y.B16, z2.B16, x.B16; \
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2022-01-12 16:11:42 +08:00
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MOVD $0x0B0E0104070A0D00, R19; \
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2022-01-12 16:06:39 +08:00
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VMOV R19, z.D[0]; \
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MOVD $0x0306090C0F020508, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // inverse shift row
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2022-01-12 16:40:19 +08:00
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VTBL z.B16, [x.B16], x.B16; \
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AESE ZERO.B16, x.B16; \
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VAND x.B16, z1.B16, z2.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0x5B67F2CEA19D0834, R19; \
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VMOV R19, z.D[0]; \
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MOVD $0xEDD14478172BBE82, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // m2 low
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2022-01-12 16:40:19 +08:00
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VTBL z2.B16, [z.B16], y.B16; \
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VUSHR $4, x.D2, x.D2; \
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VAND x.B16, z1.B16, z2.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0xAE7201DD73AFDC00, R19; \
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VMOV R19, z.D[0]; \
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MOVD $0x11CDBE62CC1063BF, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // m2 high
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2022-01-12 16:40:19 +08:00
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VTBL z2.B16, [z.B16], z2.B16; \
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VEOR y.B16, z2.B16, x.B16
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2022-01-12 16:06:39 +08:00
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#define SM4_TAO_L1(x, y, z, z1, z2) \
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2022-01-12 16:40:19 +08:00
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SM4_SBOX(x, y, z, z1, z2); \
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; \
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2022-01-12 16:06:39 +08:00
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MOVD $0x0605040702010003, R19; \
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VMOV R19, z.D[0]; \
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MOVD $0x0E0D0C0F0A09080B, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // r08 mask
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2022-01-12 16:40:19 +08:00
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VTBL z.B16, [x.B16], y.B16; \
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VEOR y.B16, x.B16, y.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0x0504070601000302, R19; \
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VMOV R19, z.D[0]; \
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2022-01-12 16:11:42 +08:00
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MOVD $0x0D0C0F0E09080B0A, R19; \
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VMOV R19, z.D[1]; \ // r16 mask
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2022-01-12 16:40:19 +08:00
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VTBL z.B16, [x.B16], z.B16; \
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VEOR z.B16, y.B16, y.B16; \
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VSHL $2, y.S4, z.S4; \
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VUSHR $30, y.S4, y.S4; \
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VORR y.B16, z.B16, y.B16; \
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2022-01-12 16:06:39 +08:00
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MOVD $0x0407060500030201, R19; \
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VMOV R19, z.D[0]; \
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MOVD $0x0C0F0E0D080B0A09, R19; \
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2022-01-12 16:11:42 +08:00
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VMOV R19, z.D[1]; \ // r24 mask
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2022-01-12 16:40:19 +08:00
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VTBL z.B16, [x.B16], z.B16; \
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VEOR z.B16, x.B16, x.B16; \
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VEOR y.B16, x.B16, x.B16
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2022-01-12 16:06:39 +08:00
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#define SM4_ROUND(RK, x, y, z, z1, z2, t0, t1, t2, t3) \
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2022-01-12 16:40:19 +08:00
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MOVW.P 4(RK), R19; \
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VMOV R19, x.S4; \
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VEOR t1.B16, x.B16, x.B16; \
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VEOR t2.B16, x.B16, x.B16; \
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VEOR t3.B16, x.B16, x.B16; \
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SM4_TAO_L1(x, y, z, z1, z2); \
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VEOR x.B16, t0.B16, t0.B16
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2022-01-12 16:06:39 +08:00
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// func gcmSm4Init(productTable *[256]byte, rk []uint32)
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TEXT ·gcmSm4Init(SB),NOSPLIT,$0
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2022-01-02 11:22:24 +08:00
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#define pTbl R0
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2022-01-12 16:06:39 +08:00
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#define RK R1
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#define I R2
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2022-01-02 11:22:24 +08:00
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MOVD productTable+0(FP), pTbl
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2022-01-12 16:06:39 +08:00
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MOVD rk+8(FP), RK
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2022-01-02 11:22:24 +08:00
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MOVD $0xC2, I
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LSL $56, I
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VMOV I, POLY.D[0]
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MOVD $1, I
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VMOV I, POLY.D[1]
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VEOR ZERO.B16, ZERO.B16, ZERO.B16
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2022-01-12 16:40:19 +08:00
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// Encrypt block 0 with the SM4 keys to generate the hash key H
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2022-01-12 16:06:39 +08:00
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VEOR B0.B16, B0.B16, B0.B16
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VEOR B1.B16, B1.B16, B1.B16
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VEOR B2.B16, B2.B16, B2.B16
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VEOR B3.B16, B3.B16, B3.B16
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EOR R3, R3
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sm4InitEncLoop:
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SM4_ROUND(RK, K0, K1, K2, K3, K4, B0, B1, B2, B3)
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SM4_ROUND(RK, K0, K1, K2, K3, K4, B1, B2, B3, B0)
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SM4_ROUND(RK, K0, K1, K2, K3, K4, B2, B3, B0, B1)
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SM4_ROUND(RK, K0, K1, K2, K3, K4, B3, B0, B1, B2)
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2022-01-12 16:40:19 +08:00
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ADD $16, R3
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CMP $128, R3
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BNE sm4InitEncLoop
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2022-01-12 16:06:39 +08:00
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VMOV B1.S[0], B0.S[1]
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VMOV B2.S[0], B0.S[2]
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VMOV B3.S[0], B0.S[3]
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2022-01-02 11:22:24 +08:00
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// Multiply by 2 modulo P
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VMOV B0.D[0], I
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ASR $63, I
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VMOV I, T1.D[0]
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VMOV I, T1.D[1]
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VAND POLY.B16, T1.B16, T1.B16
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VUSHR $63, B0.D2, T2.D2
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VEXT $8, ZERO.B16, T2.B16, T2.B16
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VSHL $1, B0.D2, B0.D2
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VEOR T1.B16, B0.B16, B0.B16
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VEOR T2.B16, B0.B16, B0.B16 // Can avoid this when VSLI is available
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// Karatsuba pre-computation
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VEXT $8, B0.B16, B0.B16, B1.B16
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VEOR B0.B16, B1.B16, B1.B16
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ADD $14*16, pTbl
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2022-01-02 17:11:42 +08:00
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VST1 [B0.B16, B1.B16], (pTbl)
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2022-01-02 11:22:24 +08:00
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SUB $2*16, pTbl
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VMOV B0.B16, B2.B16
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VMOV B1.B16, B3.B16
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MOVD $7, I
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initLoop:
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// Compute powers of H
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SUBS $1, I
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VPMULL B0.D1, B2.D1, T1.Q1
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VPMULL2 B0.D2, B2.D2, T0.Q1
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VPMULL B1.D1, B3.D1, T2.Q1
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VEOR T0.B16, T2.B16, T2.B16
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VEOR T1.B16, T2.B16, T2.B16
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VEXT $8, ZERO.B16, T2.B16, T3.B16
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VEXT $8, T2.B16, ZERO.B16, T2.B16
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VEOR T2.B16, T0.B16, T0.B16
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VEOR T3.B16, T1.B16, T1.B16
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VPMULL POLY.D1, T0.D1, T2.Q1
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VEXT $8, T0.B16, T0.B16, T0.B16
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VEOR T2.B16, T0.B16, T0.B16
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VPMULL POLY.D1, T0.D1, T2.Q1
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VEXT $8, T0.B16, T0.B16, T0.B16
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VEOR T2.B16, T0.B16, T0.B16
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VEOR T1.B16, T0.B16, B2.B16
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VMOV B2.B16, B3.B16
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VEXT $8, B2.B16, B2.B16, B2.B16
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VEOR B2.B16, B3.B16, B3.B16
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2022-01-02 17:11:42 +08:00
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VST1 [B2.B16, B3.B16], (pTbl)
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2022-01-02 11:22:24 +08:00
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SUB $2*16, pTbl
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BNE initLoop
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RET
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#undef I
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2022-01-12 16:06:39 +08:00
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#undef RK
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2022-01-02 11:22:24 +08:00
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#undef pTbl
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// func gcmSm4Data(productTable *[256]byte, data []byte, T *[16]byte)
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TEXT ·gcmSm4Data(SB),NOSPLIT,$0
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#define pTbl R0
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#define aut R1
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#define tPtr R2
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#define autLen R3
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#define H0 R4
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#define pTblSave R5
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#define mulRound(X) \
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VLD1.P 32(pTbl), [T1.B16, T2.B16] \
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VREV64 X.B16, X.B16 \
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VEXT $8, X.B16, X.B16, T0.B16 \
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VEOR X.B16, T0.B16, T0.B16 \
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VPMULL X.D1, T1.D1, T3.Q1 \
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VEOR T3.B16, ACC1.B16, ACC1.B16 \
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VPMULL2 X.D2, T1.D2, T3.Q1 \
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VEOR T3.B16, ACC0.B16, ACC0.B16 \
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VPMULL T0.D1, T2.D1, T3.Q1 \
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VEOR T3.B16, ACCM.B16, ACCM.B16
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MOVD productTable+0(FP), pTbl
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MOVD data_base+8(FP), aut
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MOVD data_len+16(FP), autLen
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MOVD T+32(FP), tPtr
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2022-01-02 21:24:51 +08:00
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//VEOR ACC0.B16, ACC0.B16, ACC0.B16
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VLD1 (tPtr), [ACC0.B16]
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2022-01-02 11:22:24 +08:00
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CBZ autLen, dataBail
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MOVD $0xC2, H0
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LSL $56, H0
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VMOV H0, POLY.D[0]
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MOVD $1, H0
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VMOV H0, POLY.D[1]
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VEOR ZERO.B16, ZERO.B16, ZERO.B16
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MOVD pTbl, pTblSave
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CMP $13, autLen
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BEQ dataTLS
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CMP $128, autLen
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BLT startSinglesLoop
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B octetsLoop
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dataTLS:
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ADD $14*16, pTbl
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VLD1.P (pTbl), [T1.B16, T2.B16]
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VEOR B0.B16, B0.B16, B0.B16
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MOVD (aut), H0
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VMOV H0, B0.D[0]
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MOVW 8(aut), H0
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VMOV H0, B0.S[2]
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MOVB 12(aut), H0
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VMOV H0, B0.B[12]
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MOVD $0, autLen
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B dataMul
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octetsLoop:
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CMP $128, autLen
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BLT startSinglesLoop
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SUB $128, autLen
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VLD1.P 32(aut), [B0.B16, B1.B16]
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VLD1.P 32(pTbl), [T1.B16, T2.B16]
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VREV64 B0.B16, B0.B16
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VEOR ACC0.B16, B0.B16, B0.B16
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VEXT $8, B0.B16, B0.B16, T0.B16
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VEOR B0.B16, T0.B16, T0.B16
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VPMULL B0.D1, T1.D1, ACC1.Q1
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VPMULL2 B0.D2, T1.D2, ACC0.Q1
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VPMULL T0.D1, T2.D1, ACCM.Q1
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mulRound(B1)
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VLD1.P 32(aut), [B2.B16, B3.B16]
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mulRound(B2)
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mulRound(B3)
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VLD1.P 32(aut), [B4.B16, B5.B16]
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mulRound(B4)
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mulRound(B5)
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VLD1.P 32(aut), [B6.B16, B7.B16]
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mulRound(B6)
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mulRound(B7)
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MOVD pTblSave, pTbl
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reduce()
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B octetsLoop
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startSinglesLoop:
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ADD $14*16, pTbl
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VLD1.P (pTbl), [T1.B16, T2.B16]
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singlesLoop:
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CMP $16, autLen
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BLT dataEnd
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SUB $16, autLen
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VLD1.P 16(aut), [B0.B16]
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dataMul:
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VREV64 B0.B16, B0.B16
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VEOR ACC0.B16, B0.B16, B0.B16
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VEXT $8, B0.B16, B0.B16, T0.B16
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|
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VEOR B0.B16, T0.B16, T0.B16
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VPMULL B0.D1, T1.D1, ACC1.Q1
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VPMULL2 B0.D2, T1.D2, ACC0.Q1
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VPMULL T0.D1, T2.D1, ACCM.Q1
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|
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|
|
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|
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reduce()
|
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B singlesLoop
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dataEnd:
|
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CBZ autLen, dataBail
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VEOR B0.B16, B0.B16, B0.B16
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ADD autLen, aut
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dataLoadLoop:
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MOVB.W -1(aut), H0
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VEXT $15, B0.B16, ZERO.B16, B0.B16
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VMOV H0, B0.B[0]
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SUBS $1, autLen
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|
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BNE dataLoadLoop
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|
B dataMul
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|
dataBail:
|
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|
VST1 [ACC0.B16], (tPtr)
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|
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RET
|
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|
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#undef pTbl
|
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|
|
#undef aut
|
|
|
|
|
#undef tPtr
|
|
|
|
|
#undef autLen
|
|
|
|
|
#undef H0
|
|
|
|
|
#undef pTblSave
|
