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gmsm/sm4/gcm_amd64.s
Sun Yimin 5adc912824
refine build tags
2024-03-05 09:47:49 +08:00

2288 lines
45 KiB
ArmAsm
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// This is an optimized implementation of AES-GCM using AES-NI and CLMUL-NI
// The implementation uses some optimization as described in:
// [1] Gueron, S., Kounavis, M.E.: Intel® Carry-Less Multiplication
// Instruction and its Usage for Computing the GCM Mode rev. 2.02
// [2] Gueron, S., Krasnov, V.: Speeding up Counter Mode in Software and
// Hardware
//go:build !purego
#include "textflag.h"
#define B0 X0
#define B1 X1
#define B2 X2
#define B3 X3
#define B4 X4
#define B5 X5
#define B6 X6
#define B7 X7
#define DWB0 Y0
#define DWB1 Y2
#define DWB2 Y4
#define DWB3 Y6
#define XDWORD Y1
#define YDWORD Y3
#define XDWTMP0 Y5
#define ACC0 X8
#define ACC1 X9
#define ACCM X10
#define T0 X11
#define T1 X12
#define T2 X13
#define POLY X14
#define BSWAP X15
#define DWBSWAP Y15
#define NIBBLE_MASK Y7
#define X_NIBBLE_MASK X7
DATA gcmPoly<>+0x00(SB)/8, $0x0000000000000001
DATA gcmPoly<>+0x08(SB)/8, $0xc200000000000000
DATA andMask<>+0x00(SB)/8, $0x00000000000000ff
DATA andMask<>+0x08(SB)/8, $0x0000000000000000
DATA andMask<>+0x10(SB)/8, $0x000000000000ffff
DATA andMask<>+0x18(SB)/8, $0x0000000000000000
DATA andMask<>+0x20(SB)/8, $0x0000000000ffffff
DATA andMask<>+0x28(SB)/8, $0x0000000000000000
DATA andMask<>+0x30(SB)/8, $0x00000000ffffffff
DATA andMask<>+0x38(SB)/8, $0x0000000000000000
DATA andMask<>+0x40(SB)/8, $0x000000ffffffffff
DATA andMask<>+0x48(SB)/8, $0x0000000000000000
DATA andMask<>+0x50(SB)/8, $0x0000ffffffffffff
DATA andMask<>+0x58(SB)/8, $0x0000000000000000
DATA andMask<>+0x60(SB)/8, $0x00ffffffffffffff
DATA andMask<>+0x68(SB)/8, $0x0000000000000000
DATA andMask<>+0x70(SB)/8, $0xffffffffffffffff
DATA andMask<>+0x78(SB)/8, $0x0000000000000000
DATA andMask<>+0x80(SB)/8, $0xffffffffffffffff
DATA andMask<>+0x88(SB)/8, $0x00000000000000ff
DATA andMask<>+0x90(SB)/8, $0xffffffffffffffff
DATA andMask<>+0x98(SB)/8, $0x000000000000ffff
DATA andMask<>+0xa0(SB)/8, $0xffffffffffffffff
DATA andMask<>+0xa8(SB)/8, $0x0000000000ffffff
DATA andMask<>+0xb0(SB)/8, $0xffffffffffffffff
DATA andMask<>+0xb8(SB)/8, $0x00000000ffffffff
DATA andMask<>+0xc0(SB)/8, $0xffffffffffffffff
DATA andMask<>+0xc8(SB)/8, $0x000000ffffffffff
DATA andMask<>+0xd0(SB)/8, $0xffffffffffffffff
DATA andMask<>+0xd8(SB)/8, $0x0000ffffffffffff
DATA andMask<>+0xe0(SB)/8, $0xffffffffffffffff
DATA andMask<>+0xe8(SB)/8, $0x00ffffffffffffff
GLOBL gcmPoly<>(SB), (NOPTR+RODATA), $16
GLOBL andMask<>(SB), (NOPTR+RODATA), $240
#include "aesni_macros_amd64.s"
// func gcmSm4Finish(productTable *[256]byte, tagMask, T *[16]byte, pLen, dLen uint64)
TEXT ·gcmSm4Finish(SB),NOSPLIT,$0
#define pTbl DI
#define tMsk SI
#define tPtr DX
#define plen AX
#define dlen CX
MOVQ productTable+0(FP), pTbl
MOVQ tagMask+8(FP), tMsk
MOVQ T+16(FP), tPtr
MOVQ pLen+24(FP), plen
MOVQ dLen+32(FP), dlen
MOVOU (tPtr), ACC0
MOVOU (tMsk), T2
MOVOU bswap_mask<>(SB), BSWAP
MOVOU gcmPoly<>(SB), POLY
SHLQ $3, plen
SHLQ $3, dlen
MOVQ plen, B0
PINSRQ $1, dlen, B0
PXOR ACC0, B0
MOVOU (16*14)(pTbl), ACC0
MOVOU (16*15)(pTbl), ACCM
MOVOU ACC0, ACC1
PCLMULQDQ $0x00, B0, ACC0
PCLMULQDQ $0x11, B0, ACC1
PSHUFD $78, B0, T0
PXOR B0, T0
PCLMULQDQ $0x00, T0, ACCM
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
MOVOU POLY, T0
PCLMULQDQ $0x01, ACC0, T0
PSHUFD $78, ACC0, ACC0
PXOR T0, ACC0
MOVOU POLY, T0
PCLMULQDQ $0x01, ACC0, T0
PSHUFD $78, ACC0, ACC0
PXOR T0, ACC0
PXOR ACC1, ACC0
PSHUFB BSWAP, ACC0
PXOR T2, ACC0
MOVOU ACC0, (tPtr)
RET
#undef pTbl
#undef tMsk
#undef tPtr
#undef plen
#undef dlen
// func gcmSm4Init(productTable *[256]byte, rk []uint32)
TEXT ·gcmSm4Init(SB),NOSPLIT,$0
#define dst DI
#define RK SI
MOVQ productTable+0(FP), dst
MOVQ rk+8(FP), RK
MOVOU gcmPoly<>(SB), POLY
// Encrypt block 0, with the sm4 round keys to generate the hash key H
PXOR B0, B0
PXOR B1, B1
PXOR B2, B2
PXOR B3, B3
XORL CX, CX
sm4InitEncLoop:
SM4_SINGLE_ROUND(0, RK, CX, T0, T1, T2, B3, B2, B1, B0)
SM4_SINGLE_ROUND(1, RK, CX, T0, T1, T2, B2, B1, B0, B3)
SM4_SINGLE_ROUND(2, RK, CX, T0, T1, T2, B1, B0, B3, B2)
SM4_SINGLE_ROUND(3, RK, CX, T0, T1, T2, B0, B3, B2, B1)
ADDL $16, CX
CMPL CX, $4*32
JB sm4InitEncLoop
PALIGNR $4, B3, B3
PALIGNR $4, B3, B2
PALIGNR $4, B2, B1
PALIGNR $4, B1, B0
// H * 2
PSHUFD $0xff, B0, T0
MOVOU B0, T1
PSRAL $31, T0
PAND POLY, T0
PSRLL $31, T1
PSLLDQ $4, T1
PSLLL $1, B0
PXOR T0, B0
PXOR T1, B0
// Karatsuba pre-computations
MOVOU B0, (16*14)(dst)
PSHUFD $78, B0, B1
PXOR B0, B1
MOVOU B1, (16*15)(dst)
MOVOU B0, B2
MOVOU B1, B3
// Now prepare powers of H and pre-computations for them
MOVQ $7, AX
initLoop:
MOVOU B2, T0
MOVOU B2, T1
MOVOU B3, T2
PCLMULQDQ $0x00, B0, T0
PCLMULQDQ $0x11, B0, T1
PCLMULQDQ $0x00, B1, T2
PXOR T0, T2
PXOR T1, T2
MOVOU T2, B4
PSLLDQ $8, B4
PSRLDQ $8, T2
PXOR B4, T0
PXOR T2, T1
MOVOU POLY, B2
PCLMULQDQ $0x01, T0, B2
PSHUFD $78, T0, T0
PXOR B2, T0
MOVOU POLY, B2
PCLMULQDQ $0x01, T0, B2
PSHUFD $78, T0, T0
PXOR T0, B2
PXOR T1, B2
MOVOU B2, (16*12)(dst)
PSHUFD $78, B2, B3
PXOR B2, B3
MOVOU B3, (16*13)(dst)
DECQ AX
LEAQ (-16*2)(dst), dst
JNE initLoop
RET
#undef RK
#undef dst
// func gcmSm4Data(productTable *[256]byte, data []byte, T *[16]byte)
TEXT ·gcmSm4Data(SB),NOSPLIT,$0
#define pTbl DI
#define aut SI
#define tPtr CX
#define autLen DX
#define reduceRound(a) MOVOU POLY, T0; PCLMULQDQ $0x01, a, T0; PSHUFD $78, a, a; PXOR T0, a
#define avxReduceRound(a) VPCLMULQDQ $0x01, a, POLY, T0; VPSHUFD $78, a, a; VPXOR T0, a, a
#define mulRoundAAD(X ,i) \
MOVOU (16*(i*2))(pTbl), T1;\
MOVOU T1, T2;\
PCLMULQDQ $0x00, X, T1;\
PXOR T1, ACC0;\
PCLMULQDQ $0x11, X, T2;\
PXOR T2, ACC1;\
PSHUFD $78, X, T1;\
PXOR T1, X;\
MOVOU (16*(i*2+1))(pTbl), T1;\
PCLMULQDQ $0x00, X, T1;\
PXOR T1, ACCM
MOVQ productTable+0(FP), pTbl
MOVQ data_base+8(FP), aut
MOVQ data_len+16(FP), autLen
MOVQ T+32(FP), tPtr
PXOR ACC0, ACC0
// MOVOU (tPtr), ACC0 // originally we passed in tag initial value
MOVOU bswap_mask<>(SB), BSWAP
MOVOU gcmPoly<>(SB), POLY
TESTQ autLen, autLen
JEQ dataBail
CMPQ autLen, $13 // optimize the TLS case
JE dataTLS
CMPQ autLen, $128
JB startSinglesLoop
JMP dataOctaLoop
dataTLS:
MOVOU (16*14)(pTbl), T1
MOVOU (16*15)(pTbl), T2
PXOR B0, B0
MOVQ (aut), B0
PINSRD $2, 8(aut), B0
PINSRB $12, 12(aut), B0
XORQ autLen, autLen
JMP dataMul
dataOctaLoop:
CMPQ autLen, $128
JB startSinglesLoop
SUBQ $128, autLen
MOVOU (16*0)(aut), X0
MOVOU (16*1)(aut), X1
MOVOU (16*2)(aut), X2
MOVOU (16*3)(aut), X3
MOVOU (16*4)(aut), X4
MOVOU (16*5)(aut), X5
MOVOU (16*6)(aut), X6
MOVOU (16*7)(aut), X7
LEAQ (16*8)(aut), aut
PSHUFB BSWAP, X0
PSHUFB BSWAP, X1
PSHUFB BSWAP, X2
PSHUFB BSWAP, X3
PSHUFB BSWAP, X4
PSHUFB BSWAP, X5
PSHUFB BSWAP, X6
PSHUFB BSWAP, X7
PXOR ACC0, X0
MOVOU (16*0)(pTbl), ACC0
MOVOU (16*1)(pTbl), ACCM
MOVOU ACC0, ACC1
PSHUFD $78, X0, T1
PXOR X0, T1
PCLMULQDQ $0x00, X0, ACC0
PCLMULQDQ $0x11, X0, ACC1
PCLMULQDQ $0x00, T1, ACCM
mulRoundAAD(X1, 1)
mulRoundAAD(X2, 2)
mulRoundAAD(X3, 3)
mulRoundAAD(X4, 4)
mulRoundAAD(X5, 5)
mulRoundAAD(X6, 6)
mulRoundAAD(X7, 7)
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
reduceRound(ACC0)
reduceRound(ACC0)
PXOR ACC1, ACC0
JMP dataOctaLoop
startSinglesLoop:
MOVOU (16*14)(pTbl), T1
MOVOU (16*15)(pTbl), T2
dataSinglesLoop:
CMPQ autLen, $16
JB dataEnd
SUBQ $16, autLen
MOVOU (aut), B0
dataMul:
PSHUFB BSWAP, B0
PXOR ACC0, B0
MOVOU T1, ACC0
MOVOU T2, ACCM
MOVOU T1, ACC1
PSHUFD $78, B0, T0
PXOR B0, T0
PCLMULQDQ $0x00, B0, ACC0
PCLMULQDQ $0x11, B0, ACC1
PCLMULQDQ $0x00, T0, ACCM
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
MOVOU POLY, T0
PCLMULQDQ $0x01, ACC0, T0
PSHUFD $78, ACC0, ACC0
PXOR T0, ACC0
MOVOU POLY, T0
PCLMULQDQ $0x01, ACC0, T0
PSHUFD $78, ACC0, ACC0
PXOR T0, ACC0
PXOR ACC1, ACC0
LEAQ 16(aut), aut
JMP dataSinglesLoop
dataEnd:
TESTQ autLen, autLen
JEQ dataBail
PXOR B0, B0
LEAQ -1(aut)(autLen*1), aut
dataLoadLoop:
PSLLDQ $1, B0
PINSRB $0, (aut), B0
LEAQ -1(aut), aut
DECQ autLen
JNE dataLoadLoop
JMP dataMul
dataBail:
MOVOU ACC0, (tPtr)
RET
#undef pTbl
#undef aut
#undef tPtr
#undef autLen
// func gcmSm4Enc(productTable *[256]byte, dst, src []byte, ctr, T *[16]byte, rk []uint32)
TEXT ·gcmSm4Enc(SB),0,$256-96
#define pTbl DI
#define ctx DX
#define ctrPtr CX
#define ptx SI
#define rk AX
#define tPtr R8
#define ptxLen R9
#define aluCTR R10
#define aluTMP R11
#define increment(i) ADDL $1, aluCTR; MOVL aluCTR, (3*4 + 8*16 + i*16)(SP)
#define mulRound(i) \
MOVOU (16*i)(SP), T0;\
MOVOU (16*(i*2))(pTbl), T1;\
MOVOU T1, T2;\
PCLMULQDQ $0x00, T0, T1;\
PXOR T1, ACC0;\
PCLMULQDQ $0x11, T0, T2;\
PXOR T2, ACC1;\
PSHUFD $78, T0, T1;\
PXOR T1, T0;\
MOVOU (16*(i*2+1))(pTbl), T1;\
PCLMULQDQ $0x00, T0, T1;\
PXOR T1, ACCM
#define gcmEncDataStep(B) \
PSHUFB BSWAP, B; \
PXOR ACC0, B; \
MOVOU T2, ACC0; \
MOVOU T2, ACC1; \
MOVOU (16*15)(pTbl), ACCM; \
PSHUFD $78, B, T0; \
PXOR B, T0; \
PCLMULQDQ $0x00, B, ACC0; \
PCLMULQDQ $0x11, B, ACC1; \
PCLMULQDQ $0x00, T0, ACCM; \
PXOR ACC0, ACCM; \
PXOR ACC1, ACCM; \
MOVOU ACCM, T0; \
PSRLDQ $8, ACCM; \
PSLLDQ $8, T0; \
PXOR ACCM, ACC1; \
PXOR T0, ACC0; \
reduceRound(ACC0); \
reduceRound(ACC0); \
PXOR ACC1, ACC0
#define avxMulRound(i) \
VMOVDQU (16*i)(SP), T0;\
VMOVDQU (16*(i*2))(pTbl), T2;\
VPCLMULQDQ $0x00, T0, T2, T1;\
VPXOR T1, ACC0, ACC0;\
VPCLMULQDQ $0x11, T0, T2, T2;\
VPXOR T2, ACC1, ACC1;\
VPSHUFD $78, T0, T1;\
VPXOR T1, T0, T0;\
VMOVDQU (16*(i*2+1))(pTbl), T1;\
VPCLMULQDQ $0x00, T0, T1, T1;\
VPXOR T1, ACCM, ACCM
#define avxGcmEncDataStep(B) \
VPSHUFB BSWAP, B, B; \
VPXOR ACC0, B, B; \
VMOVDQU (16*15)(pTbl), ACCM; \
VPSHUFD $78, B, T0; \
VPXOR B, T0, T0; \
VPCLMULQDQ $0x00, B, T2, ACC0; \
VPCLMULQDQ $0x11, B, T2, ACC1; \
VPCLMULQDQ $0x00, T0, ACCM, ACCM; \
VPXOR ACC0, ACCM, ACCM; \
VPXOR ACC1, ACCM, ACCM; \
VPSLLDQ $8, ACCM, T0; \
VPSRLDQ $8, ACCM, ACCM; \
VPXOR ACCM, ACC1, ACC1; \
VPXOR T0, ACC0, ACC0; \
avxReduceRound(ACC0); \
avxReduceRound(ACC0); \
VPXOR ACC1, ACC0, ACC0
MOVQ productTable+0(FP), pTbl
MOVQ dst+8(FP), ctx
MOVQ src_base+32(FP), ptx
MOVQ src_len+40(FP), ptxLen
MOVQ ctr+56(FP), ctrPtr
MOVQ T+64(FP), tPtr
MOVQ rk_base+72(FP), rk
CMPB ·useAVX2(SB), $1
JE avx2GcmSm4Enc
CMPB ·useAVX(SB), $1
JE avxGcmSm4Enc
MOVOU bswap_mask<>(SB), BSWAP
MOVOU gcmPoly<>(SB), POLY
MOVOU (tPtr), ACC0
PXOR ACC1, ACC1
PXOR ACCM, ACCM
MOVOU (ctrPtr), T0
PSHUFB flip_mask<>(SB), T0
PEXTRD $3, T0, aluCTR
MOVOU T0, (8*16 + 0*16)(SP)
increment(0)
MOVOU T0, (8*16 + 1*16)(SP)
increment(1)
MOVOU T0, (8*16 + 2*16)(SP)
increment(2)
MOVOU T0, (8*16 + 3*16)(SP)
increment(3)
CMPQ ptxLen, $128
JB gcmSm4EncNibbles
SUBQ $128, ptxLen
// We have at least 8 blocks to encrypt, prepare the rest of the counters
MOVOU T0, (8*16 + 4*16)(SP)
increment(4)
MOVOU T0, (8*16 + 5*16)(SP)
increment(5)
MOVOU T0, (8*16 + 6*16)(SP)
increment(6)
MOVOU T0, (8*16 + 7*16)(SP)
increment(7)
// load 8 ctrs for encryption
MOVOU (8*16 + 0*16)(SP), B0
MOVOU (8*16 + 1*16)(SP), B1
MOVOU (8*16 + 2*16)(SP), B2
MOVOU (8*16 + 3*16)(SP), B3
MOVOU (8*16 + 4*16)(SP), B4
MOVOU (8*16 + 5*16)(SP), B5
MOVOU (8*16 + 6*16)(SP), B6
MOVOU (8*16 + 7*16)(SP), B7
SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
increment(0)
// XOR plaintext
MOVOU (16*0)(ptx), T0
PXOR T0, B0
increment(1)
MOVOU (16*1)(ptx), T0
PXOR T0, B1
increment(2)
MOVOU (16*2)(ptx), T0
PXOR T0, B2
increment(3)
MOVOU (16*3)(ptx), T0
PXOR T0, B3
increment(4)
MOVOU (16*4)(ptx), T0
PXOR T0, B4
increment(5)
MOVOU (16*5)(ptx), T0
PXOR T0, B5
increment(6)
MOVOU (16*6)(ptx), T0
PXOR T0, B6
increment(7)
MOVOU (16*7)(ptx), T0
PXOR T0, B7
// Store ciphertext
MOVOU B0, (16*0)(ctx)
PSHUFB BSWAP, B0
PXOR ACC0, B0
MOVOU B1, (16*1)(ctx)
PSHUFB BSWAP, B1
MOVOU B2, (16*2)(ctx)
PSHUFB BSWAP, B2
MOVOU B3, (16*3)(ctx)
PSHUFB BSWAP, B3
MOVOU B4, (16*4)(ctx)
PSHUFB BSWAP, B4
MOVOU B5, (16*5)(ctx)
PSHUFB BSWAP, B5
MOVOU B6, (16*6)(ctx)
PSHUFB BSWAP, B6
MOVOU B7, (16*7)(ctx)
PSHUFB BSWAP, B7
MOVOU B0, (16*0)(SP)
MOVOU B1, (16*1)(SP)
MOVOU B2, (16*2)(SP)
MOVOU B3, (16*3)(SP)
MOVOU B4, (16*4)(SP)
MOVOU B5, (16*5)(SP)
MOVOU B6, (16*6)(SP)
MOVOU B7, (16*7)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
gcmSm4EncOctetsLoop:
CMPQ ptxLen, $128
JB gcmSm4EncOctetsEnd
SUBQ $128, ptxLen
MOVOU (8*16 + 0*16)(SP), B0
MOVOU (8*16 + 1*16)(SP), B1
MOVOU (8*16 + 2*16)(SP), B2
MOVOU (8*16 + 3*16)(SP), B3
MOVOU (8*16 + 4*16)(SP), B4
MOVOU (8*16 + 5*16)(SP), B5
MOVOU (8*16 + 6*16)(SP), B6
MOVOU (8*16 + 7*16)(SP), B7
MOVOU (16*0)(SP), T0
PSHUFD $78, T0, T1
PXOR T0, T1
MOVOU (16*0)(pTbl), ACC0
MOVOU (16*1)(pTbl), ACCM
MOVOU ACC0, ACC1
PCLMULQDQ $0x00, T1, ACCM
PCLMULQDQ $0x00, T0, ACC0
PCLMULQDQ $0x11, T0, ACC1
mulRound(1)
increment(0)
mulRound(2)
increment(1)
mulRound(3)
increment(2)
mulRound(4)
increment(3)
mulRound(5)
increment(4)
mulRound(6)
increment(5)
mulRound(7)
increment(6)
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
increment(7)
reduceRound(ACC0)
reduceRound(ACC0)
PXOR ACC1, ACC0
SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
MOVOU (16*0)(ptx), T0
PXOR T0, B0
MOVOU (16*1)(ptx), T0
PXOR T0, B1
MOVOU (16*2)(ptx), T0
PXOR T0, B2
MOVOU (16*3)(ptx), T0
PXOR T0, B3
MOVOU (16*4)(ptx), T0
PXOR T0, B4
MOVOU (16*5)(ptx), T0
PXOR T0, B5
MOVOU (16*6)(ptx), T0
PXOR T0, B6
MOVOU (16*7)(ptx), T0
PXOR T0, B7
MOVOU B0, (16*0)(ctx)
PSHUFB BSWAP, B0
PXOR ACC0, B0
MOVOU B1, (16*1)(ctx)
PSHUFB BSWAP, B1
MOVOU B2, (16*2)(ctx)
PSHUFB BSWAP, B2
MOVOU B3, (16*3)(ctx)
PSHUFB BSWAP, B3
MOVOU B4, (16*4)(ctx)
PSHUFB BSWAP, B4
MOVOU B5, (16*5)(ctx)
PSHUFB BSWAP, B5
MOVOU B6, (16*6)(ctx)
PSHUFB BSWAP, B6
MOVOU B7, (16*7)(ctx)
PSHUFB BSWAP, B7
MOVOU B0, (16*0)(SP)
MOVOU B1, (16*1)(SP)
MOVOU B2, (16*2)(SP)
MOVOU B3, (16*3)(SP)
MOVOU B4, (16*4)(SP)
MOVOU B5, (16*5)(SP)
MOVOU B6, (16*6)(SP)
MOVOU B7, (16*7)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP gcmSm4EncOctetsLoop
gcmSm4EncOctetsEnd:
MOVOU (16*0)(SP), T0
MOVOU (16*0)(pTbl), ACC0
MOVOU (16*1)(pTbl), ACCM
MOVOU ACC0, ACC1
PSHUFD $78, T0, T1
PXOR T0, T1
PCLMULQDQ $0x00, T0, ACC0
PCLMULQDQ $0x11, T0, ACC1
PCLMULQDQ $0x00, T1, ACCM
mulRound(1)
mulRound(2)
mulRound(3)
mulRound(4)
mulRound(5)
mulRound(6)
mulRound(7)
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
reduceRound(ACC0)
reduceRound(ACC0)
PXOR ACC1, ACC0
TESTQ ptxLen, ptxLen
JE gcmSm4EncDone
SUBQ $4, aluCTR
gcmSm4EncNibbles:
CMPQ ptxLen, $64
JBE gcmSm4EncSingles
SUBQ $64, ptxLen
MOVOU (8*16 + 0*16)(SP), B0
MOVOU (8*16 + 1*16)(SP), B1
MOVOU (8*16 + 2*16)(SP), B2
MOVOU (8*16 + 3*16)(SP), B3
SM4_4BLOCKS_WO_BS(AX, B4, T0, T1, T2, B0, B1, B2, B3)
MOVOU (16*0)(ptx), T0
PXOR T0, B0
MOVOU (16*1)(ptx), T0
PXOR T0, B1
MOVOU (16*2)(ptx), T0
PXOR T0, B2
MOVOU (16*3)(ptx), T0
PXOR T0, B3
MOVOU B0, (16*0)(ctx)
MOVOU B1, (16*1)(ctx)
MOVOU B2, (16*2)(ctx)
MOVOU B3, (16*3)(ctx)
MOVOU (16*14)(pTbl), T2
increment(0)
gcmEncDataStep(B0)
increment(1)
gcmEncDataStep(B1)
increment(2)
gcmEncDataStep(B2)
increment(3)
gcmEncDataStep(B3)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
gcmSm4EncSingles:
TESTQ ptxLen, ptxLen
JE gcmSm4EncDone
MOVOU (8*16 + 0*16)(SP), B0
MOVOU (8*16 + 1*16)(SP), B1
MOVOU (8*16 + 2*16)(SP), B2
MOVOU (8*16 + 3*16)(SP), B3
SM4_4BLOCKS_WO_BS(AX, B4, T0, T1, T2, B0, B1, B2, B3)
MOVOU B0, (16*0)(SP)
MOVOU B1, (16*1)(SP)
MOVOU B2, (16*2)(SP)
MOVOU B3, (16*3)(SP)
MOVOU (16*14)(pTbl), T2
MOVQ SP, BP
gcmSm4EncSinglesLoop:
CMPQ ptxLen, $16
JB gcmSm4EncTail
SUBQ $16, ptxLen
MOVOU (16*0)(BP), B0
MOVOU (ptx), T0
PXOR T0, B0
MOVOU B0, (ctx)
gcmEncDataStep(B0)
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP gcmSm4EncSinglesLoop
gcmSm4EncTail:
TESTQ ptxLen, ptxLen
JE gcmSm4EncDone
MOVOU (16*0)(BP), B0
MOVOU B0, T0
LEAQ -1(ptx)(ptxLen*1), ptx
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
MOVOU -16(aluCTR)(aluTMP*1), T1
PXOR B0, B0
ptxLoadLoop:
PSLLDQ $1, B0
PINSRB $0, (ptx), B0
LEAQ -1(ptx), ptx
DECQ ptxLen
JNE ptxLoadLoop
PXOR T0, B0
PAND T1, B0
MOVOU B0, (ctx) // I assume there is always space, due to TAG in the end of the CT
gcmEncDataStep(B0)
gcmSm4EncDone:
MOVOU ACC0, (tPtr)
RET
avxGcmSm4Enc:
VMOVDQU bswap_mask<>(SB), BSWAP
VMOVDQU gcmPoly<>(SB), POLY
VMOVDQU (tPtr), ACC0
VPXOR ACC1, ACC1, ACC1
VPXOR ACCM, ACCM, ACCM
VMOVDQU (ctrPtr), T0
VPSHUFB flip_mask<>(SB), T0, T0
VPEXTRD $3, T0, aluCTR
VMOVDQU T0, (8*16 + 0*16)(SP)
increment(0)
VMOVDQU T0, (8*16 + 1*16)(SP)
increment(1)
VMOVDQU T0, (8*16 + 2*16)(SP)
increment(2)
VMOVDQU T0, (8*16 + 3*16)(SP)
increment(3)
CMPQ ptxLen, $128
JB avxGcmSm4EncNibbles
SUBQ $128, ptxLen
// We have at least 8 blocks to encrypt, prepare the rest of the counters
VMOVDQU T0, (8*16 + 4*16)(SP)
increment(4)
VMOVDQU T0, (8*16 + 5*16)(SP)
increment(5)
VMOVDQU T0, (8*16 + 6*16)(SP)
increment(6)
VMOVDQU T0, (8*16 + 7*16)(SP)
increment(7)
// load 8 ctrs for encryption
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
VMOVDQU (8*16 + 4*16)(SP), B4
VMOVDQU (8*16 + 5*16)(SP), B5
VMOVDQU (8*16 + 6*16)(SP), B6
VMOVDQU (8*16 + 7*16)(SP), B7
AVX_SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
increment(0)
// XOR plaintext
VPXOR (16*0)(ptx), B0, B0
VPXOR (16*1)(ptx), B1, B1
increment(1)
VPXOR (16*2)(ptx), B2, B2
VPXOR (16*3)(ptx), B3, B3
increment(2)
VPXOR (16*4)(ptx), B4, B4
VPXOR (16*5)(ptx), B5, B5
increment(3)
VPXOR (16*6)(ptx), B6, B6
VPXOR (16*7)(ptx), B7, B7
// Store ciphertext
VMOVDQU B0, (16*0)(ctx)
VPSHUFB BSWAP, B0, B0
increment(4)
VMOVDQU B1, (16*1)(ctx)
VPSHUFB BSWAP, B1, B1
increment(5)
VMOVDQU B2, (16*2)(ctx)
VPSHUFB BSWAP, B2, B2
increment(6)
VMOVDQU B3, (16*3)(ctx)
VPSHUFB BSWAP, B3, B3
increment(7)
VMOVDQU B4, (16*4)(ctx)
VPSHUFB BSWAP, B4, B4
VMOVDQU B5, (16*5)(ctx)
VPSHUFB BSWAP, B5, B5
VMOVDQU B6, (16*6)(ctx)
VPSHUFB BSWAP, B6, B6
VMOVDQU B7, (16*7)(ctx)
VPSHUFB BSWAP, B7, B7
VPXOR ACC0, B0, B0
VMOVDQU B0, (16*0)(SP)
VMOVDQU B1, (16*1)(SP)
VMOVDQU B2, (16*2)(SP)
VMOVDQU B3, (16*3)(SP)
VMOVDQU B4, (16*4)(SP)
VMOVDQU B5, (16*5)(SP)
VMOVDQU B6, (16*6)(SP)
VMOVDQU B7, (16*7)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
avxGcmSm4EncOctetsLoop:
CMPQ ptxLen, $128
JB avxGcmSm4EncOctetsEnd
SUBQ $128, ptxLen
// load 8 ctrs for encryption
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
VMOVDQU (8*16 + 4*16)(SP), B4
VMOVDQU (8*16 + 5*16)(SP), B5
VMOVDQU (8*16 + 6*16)(SP), B6
VMOVDQU (8*16 + 7*16)(SP), B7
VMOVDQU (16*0)(SP), T0
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VMOVDQU (16*0)(pTbl), ACC1
VMOVDQU (16*1)(pTbl), ACCM
VPCLMULQDQ $0x00, T1, ACCM, ACCM
VPCLMULQDQ $0x00, T0, ACC1, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
avxMulRound(1)
increment(0)
avxMulRound(2)
increment(1)
avxMulRound(3)
increment(2)
avxMulRound(4)
increment(3)
avxMulRound(5)
increment(4)
avxMulRound(6)
increment(5)
avxMulRound(7)
increment(6)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
increment(7)
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
AVX_SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
// XOR plaintext
VPXOR (16*0)(ptx), B0, B0
VPXOR (16*1)(ptx), B1, B1
VPXOR (16*2)(ptx), B2, B2
VPXOR (16*3)(ptx), B3, B3
VPXOR (16*4)(ptx), B4, B4
VPXOR (16*5)(ptx), B5, B5
VPXOR (16*6)(ptx), B6, B6
VPXOR (16*7)(ptx), B7, B7
// Store ciphertext
VMOVDQU B0, (16*0)(ctx)
VPSHUFB BSWAP, B0, B0
VMOVDQU B1, (16*1)(ctx)
VPSHUFB BSWAP, B1, B1
VMOVDQU B2, (16*2)(ctx)
VPSHUFB BSWAP, B2, B2
VMOVDQU B3, (16*3)(ctx)
VPSHUFB BSWAP, B3, B3
VMOVDQU B4, (16*4)(ctx)
VPSHUFB BSWAP, B4, B4
VMOVDQU B5, (16*5)(ctx)
VPSHUFB BSWAP, B5, B5
VMOVDQU B6, (16*6)(ctx)
VPSHUFB BSWAP, B6, B6
VMOVDQU B7, (16*7)(ctx)
VPSHUFB BSWAP, B7, B7
VPXOR ACC0, B0, B0
VMOVDQU B0, (16*0)(SP)
VMOVDQU B1, (16*1)(SP)
VMOVDQU B2, (16*2)(SP)
VMOVDQU B3, (16*3)(SP)
VMOVDQU B4, (16*4)(SP)
VMOVDQU B5, (16*5)(SP)
VMOVDQU B6, (16*6)(SP)
VMOVDQU B7, (16*7)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP avxGcmSm4EncOctetsLoop
avxGcmSm4EncOctetsEnd:
VMOVDQU (16*0)(SP), T0
VMOVDQU (16*0)(pTbl), ACC0
VMOVDQU (16*1)(pTbl), ACCM
VMOVDQU ACC0, ACC1
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VPCLMULQDQ $0x00, T0, ACC0, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
VPCLMULQDQ $0x00, T1, ACCM, ACCM
avxMulRound(1)
avxMulRound(2)
avxMulRound(3)
avxMulRound(4)
avxMulRound(5)
avxMulRound(6)
avxMulRound(7)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
TESTQ ptxLen, ptxLen
JE avxGcmSm4EncDone
SUBQ $4, aluCTR
avxGcmSm4EncNibbles:
CMPQ ptxLen, $64
JBE avxGcmSm4EncSingles
SUBQ $64, ptxLen
// load 4 ctrs for encryption
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B6, B7, T1, T2, B0, B1, B2, B3)
// XOR plaintext
VPXOR (16*0)(ptx), B0, B0
VPXOR (16*1)(ptx), B1, B1
VPXOR (16*2)(ptx), B2, B2
VPXOR (16*3)(ptx), B3, B3
// Store ciphertext
VMOVDQU B0, (16*0)(ctx)
VMOVDQU B1, (16*1)(ctx)
VMOVDQU B2, (16*2)(ctx)
VMOVDQU B3, (16*3)(ctx)
VMOVDQU (16*14)(pTbl), T2
increment(0)
avxGcmEncDataStep(B0)
increment(1)
avxGcmEncDataStep(B1)
increment(2)
avxGcmEncDataStep(B2)
increment(3)
avxGcmEncDataStep(B3)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
avxGcmSm4EncSingles:
TESTQ ptxLen, ptxLen
JE avxGcmSm4EncDone
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B6, B7, T1, T2, B0, B1, B2, B3)
VMOVDQU B0, (16*0)(SP)
VMOVDQU B1, (16*1)(SP)
VMOVDQU B2, (16*2)(SP)
VMOVDQU B3, (16*3)(SP)
VMOVDQU (16*14)(pTbl), T2
MOVQ SP, BP
avxGcmSm4EncSinglesLoop:
CMPQ ptxLen, $16
JB avxGcmSm4EncTail
SUBQ $16, ptxLen
VMOVDQU (16*0)(BP), B0
VMOVDQU (ptx), T0
VPXOR T0, B0, B0
VMOVDQU B0, (ctx)
avxGcmEncDataStep(B0)
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP avxGcmSm4EncSinglesLoop
avxGcmSm4EncTail:
TESTQ ptxLen, ptxLen
JE avxGcmSm4EncDone
VMOVDQU (16*0)(BP), B0
VMOVDQU B0, T0
LEAQ -1(ptx)(ptxLen*1), ptx
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
VMOVDQU -16(aluCTR)(aluTMP*1), T1
VPXOR B0, B0, B0
avxPtxLoadLoop:
VPSLLDQ $1, B0, B0
VPINSRB $0, (ptx), B0, B0
LEAQ -1(ptx), ptx
DECQ ptxLen
JNE avxPtxLoadLoop
VPXOR T0, B0, B0
VPAND T1, B0, B0
VMOVDQU B0, (ctx) // I assume there is always space, due to TAG in the end of the CT
avxGcmEncDataStep(B0)
avxGcmSm4EncDone:
VMOVDQU ACC0, (tPtr)
RET
avx2GcmSm4Enc:
VMOVDQU bswap_mask<>(SB), BSWAP
VMOVDQU gcmPoly<>(SB), POLY
VMOVDQU (tPtr), ACC0
VPXOR ACC1, ACC1, ACC1
VPXOR ACCM, ACCM, ACCM
VMOVDQU (ctrPtr), T0
VPSHUFB flip_mask<>(SB), T0, T0
VPEXTRD $3, T0, aluCTR
VINSERTI128 $1, T0, Y11, Y11
VMOVDQU Y11, (8*16 + 0*32)(SP)
increment(0)
increment(1)
VMOVDQU Y11, (8*16 + 1*32)(SP)
increment(2)
increment(3)
CMPQ ptxLen, $128
JB avx2GcmSm4EncNibbles
SUBQ $128, ptxLen
// We have at least 8 blocks to encrypt, prepare the rest of the counters
VMOVDQU Y11, (8*16 + 2*32)(SP)
increment(4)
increment(5)
VMOVDQU Y11, (8*16 + 3*32)(SP)
increment(6)
increment(7)
VBROADCASTI128 bswap_mask<>(SB), DWBSWAP
// load 8 ctrs for encryption
VMOVDQU (4*32 + 0*32)(SP), DWB0
VMOVDQU (4*32 + 1*32)(SP), DWB1
VMOVDQU (4*32 + 2*32)(SP), DWB2
VMOVDQU (4*32 + 3*32)(SP), DWB3
increment(0)
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
VBROADCASTI128 nibble_mask<>(SB), NIBBLE_MASK
increment(1)
AVX2_SM4_8BLOCKS(rk, XDWORD, YDWORD, X1, X3, XDWTMP0, DWB0, DWB1, DWB2, DWB3)
increment(2)
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
VPSHUFB DWBSWAP, DWB0, DWB0
VPSHUFB DWBSWAP, DWB1, DWB1
increment(3)
VPSHUFB DWBSWAP, DWB2, DWB2
VPSHUFB DWBSWAP, DWB3, DWB3
increment(4)
// XOR plaintext
VMOVDQU (32*0)(ptx), XDWTMP0
VPXOR XDWTMP0, DWB0, DWB0
VMOVDQU (32*1)(ptx), XDWTMP0
VPXOR XDWTMP0, DWB1, DWB1
increment(5)
VMOVDQU (32*2)(ptx), XDWTMP0
VPXOR XDWTMP0, DWB2, DWB2
VMOVDQU (32*3)(ptx), XDWTMP0
VPXOR XDWTMP0, DWB3, DWB3
increment(6)
// Store ciphertext
VMOVDQU DWB0, (32*0)(ctx)
VPSHUFB DWBSWAP, DWB0, DWB0
VMOVDQU DWB1, (32*1)(ctx)
VPSHUFB DWBSWAP, DWB1, DWB1
VMOVDQU DWB2, (32*2)(ctx)
VPSHUFB DWBSWAP, DWB2, DWB2
VMOVDQU DWB3, (32*3)(ctx)
VPSHUFB DWBSWAP, DWB3, DWB3
increment(7)
//VPXOR XDWTMP0, XDWTMP0, XDWTMP0
//VINSERTI128 $0, ACC0, XDWTMP0, XDWTMP0
//VPXOR XDWTMP0, DWB0, DWB0
PXOR ACC0, B0 // Can't call VPXOR here
VMOVDQU DWB0, (32*0)(SP)
VMOVDQU DWB1, (32*1)(SP)
VMOVDQU DWB2, (32*2)(SP)
VMOVDQU DWB3, (32*3)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
avx2GcmSm4EncOctetsLoop:
CMPQ ptxLen, $128
JB avx2GcmSm4EncOctetsEnd
SUBQ $128, ptxLen
// load 8 ctrs for encryption
VMOVDQU (4*32 + 0*32)(SP), DWB0
VMOVDQU (4*32 + 1*32)(SP), DWB1
VMOVDQU (4*32 + 2*32)(SP), DWB2
VMOVDQU (4*32 + 3*32)(SP), DWB3
VMOVDQU (16*0)(SP), T0
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VMOVDQU (16*0)(pTbl), ACC1
VMOVDQU (16*1)(pTbl), ACCM
VPCLMULQDQ $0x00, T1, ACCM, ACCM
VPCLMULQDQ $0x00, T0, ACC1, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
AVX2_SM4_8BLOCKS(rk, XDWORD, YDWORD, X1, X3, XDWTMP0, DWB0, DWB1, DWB2, DWB3)
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
VPSHUFB DWBSWAP, DWB0, DWB0
VPSHUFB DWBSWAP, DWB1, DWB1
VPSHUFB DWBSWAP, DWB2, DWB2
VPSHUFB DWBSWAP, DWB3, DWB3
avxMulRound(1)
increment(0)
avxMulRound(2)
increment(1)
avxMulRound(3)
increment(2)
avxMulRound(4)
increment(3)
avxMulRound(5)
increment(4)
avxMulRound(6)
increment(5)
avxMulRound(7)
increment(6)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
increment(7)
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
// XOR plaintext
VPXOR (32*0)(ptx), DWB0, DWB0
VPXOR (32*1)(ptx), DWB1, DWB1
VPXOR (32*2)(ptx), DWB2, DWB2
VPXOR (32*3)(ptx), DWB3, DWB3
// Store ciphertext
VMOVDQU DWB0, (32*0)(ctx)
VPSHUFB DWBSWAP, DWB0, DWB0
VMOVDQU DWB1, (32*1)(ctx)
VPSHUFB DWBSWAP, DWB1, DWB1
VMOVDQU DWB2, (32*2)(ctx)
VPSHUFB DWBSWAP, DWB2, DWB2
VMOVDQU DWB3, (32*3)(ctx)
VPSHUFB DWBSWAP, DWB3, DWB3
//VPXOR XDWTMP0, XDWTMP0, XDWTMP0
//VINSERTI128 $0, ACC0, XDWTMP0, XDWTMP0
//VPXOR XDWTMP0, DWB0, DWB0
PXOR ACC0, B0 // Can't call VPXOR here
VMOVDQU DWB0, (32*0)(SP)
VMOVDQU DWB1, (32*1)(SP)
VMOVDQU DWB2, (32*2)(SP)
VMOVDQU DWB3, (32*3)(SP)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP avx2GcmSm4EncOctetsLoop
avx2GcmSm4EncOctetsEnd:
VMOVDQU (16*0)(SP), T0
VMOVDQU (16*0)(pTbl), ACC0
VMOVDQU (16*1)(pTbl), ACCM
VMOVDQU ACC0, ACC1
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VPCLMULQDQ $0x00, T0, ACC0, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
VPCLMULQDQ $0x00, T1, ACCM, ACCM
avxMulRound(1)
avxMulRound(2)
avxMulRound(3)
avxMulRound(4)
avxMulRound(5)
avxMulRound(6)
avxMulRound(7)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
TESTQ ptxLen, ptxLen
JE avx2GcmSm4EncDone
SUBQ $4, aluCTR
avx2GcmSm4EncNibbles:
CMPQ ptxLen, $64
JBE avx2GcmSm4EncSingles
SUBQ $64, ptxLen
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B4, B5, B6, B7, B0, B1, B2, B3)
VPXOR (16*0)(ptx), B0, B0
VPXOR (16*1)(ptx), B1, B1
VPXOR (16*2)(ptx), B2, B2
VPXOR (16*3)(ptx), B3, B3
VMOVDQU B0, (16*0)(ctx)
VMOVDQU B1, (16*1)(ctx)
VMOVDQU B2, (16*2)(ctx)
VMOVDQU B3, (16*3)(ctx)
VMOVDQU (16*14)(pTbl), T2
avxGcmEncDataStep(B0)
increment(0)
avxGcmEncDataStep(B1)
increment(1)
avxGcmEncDataStep(B2)
increment(2)
avxGcmEncDataStep(B3)
increment(3)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
avx2GcmSm4EncSingles:
TESTQ ptxLen, ptxLen
JE avx2GcmSm4EncDone
VMOVDQU (8*16 + 0*16)(SP), B0
VMOVDQU (8*16 + 1*16)(SP), B1
VMOVDQU (8*16 + 2*16)(SP), B2
VMOVDQU (8*16 + 3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B4, B5, B6, B7, B0, B1, B2, B3)
VMOVDQU B0, (16*0)(SP)
VMOVDQU B1, (16*1)(SP)
VMOVDQU B2, (16*2)(SP)
VMOVDQU B3, (16*3)(SP)
VMOVDQU (16*14)(pTbl), T2
MOVQ SP, BP
avx2GcmSm4EncSinglesLoop:
CMPQ ptxLen, $16
JB avx2GcmSm4EncTail
SUBQ $16, ptxLen
VMOVDQU (16*0)(BP), B0
VMOVDQU (ptx), T0
VPXOR T0, B0, B0
VMOVDQU B0, (ctx)
avxGcmEncDataStep(B0)
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP avx2GcmSm4EncSinglesLoop
avx2GcmSm4EncTail:
TESTQ ptxLen, ptxLen
JE avx2GcmSm4EncDone
VMOVDQU (16*0)(BP), B0
VMOVDQU B0, T0
LEAQ -1(ptx)(ptxLen*1), ptx
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
VMOVDQU -16(aluCTR)(aluTMP*1), T1
VPXOR B0, B0, B0
avx2PtxLoadLoop:
VPSLLDQ $1, B0, B0
VPINSRB $0, (ptx), B0, B0
LEAQ -1(ptx), ptx
DECQ ptxLen
JNE avx2PtxLoadLoop
VPXOR T0, B0, B0
VPAND T1, B0, B0
VMOVDQU B0, (ctx) // I assume there is always space, due to TAG in the end of the CT
avxGcmEncDataStep(B0)
avx2GcmSm4EncDone:
VMOVDQU ACC0, (tPtr)
VZEROUPPER
RET
#undef increment
// func gcmSm4Dec(productTable *[256]byte, dst, src []byte, ctr, T *[16]byte, rk []uint32)
TEXT ·gcmSm4Dec(SB),0,$128-96
#define increment(i) ADDL $1, aluCTR; MOVL aluCTR, (3*4 + i*16)(SP)
#define decMulRound(i) \
MOVOU (16*i)(ctx), T0;\
PSHUFB BSWAP, T0;\
internalDecMulRound(i)
#define internalDecMulRound(i) \
MOVOU (16*(i*2))(pTbl), T1;\
MOVOU T1, T2;\
PCLMULQDQ $0x00, T0, T1;\
PXOR T1, ACC0;\
PSHUFD $78, T0, T1;\
PCLMULQDQ $0x11, T0, T2;\
PXOR T1, T0;\
PXOR T2, ACC1;\
MOVOU (16*(i*2+1))(pTbl), T2;\
PCLMULQDQ $0x00, T2, T0;\
PXOR T0, ACCM
#define decGhashRound(i) \
MOVOU (16*i)(ctx), B0; \
internalDecGhashRound()
#define internalDecGhashRound() \
PSHUFB BSWAP, B0; \
PXOR ACC0, B0; \
MOVOU T2, ACC0; \
MOVOU T2, ACC1; \
MOVOU (16*15)(pTbl), ACCM; \
PCLMULQDQ $0x00, B0, ACC0; \
PCLMULQDQ $0x11, B0, ACC1; \
PSHUFD $78, B0, T0; \
PXOR B0, T0; \
PCLMULQDQ $0x00, T0, ACCM; \
PXOR ACC0, ACCM; \
PXOR ACC1, ACCM; \
MOVOU ACCM, T0; \
PSRLDQ $8, ACCM; \
PSLLDQ $8, T0; \
PXOR ACCM, ACC1; \
PXOR T0, ACC0; \
reduceRound(ACC0); \
reduceRound(ACC0); \
PXOR ACC1, ACC0
#define avxDecMulRound(i) \
VMOVDQU (16*i)(ctx), T0;\
VPSHUFB BSWAP, T0, T0;\
VMOVDQU (16*(i*2))(pTbl), T2;\
VPCLMULQDQ $0x00, T0, T2, T1;\
VPXOR T1, ACC0, ACC0;\
VPSHUFD $78, T0, T1;\
VPCLMULQDQ $0x11, T0, T2, T2;\
VPXOR T1, T0, T0;\
VPXOR T2, ACC1, ACC1;\
VMOVDQU (16*(i*2+1))(pTbl), T2;\
VPCLMULQDQ $0x00, T2, T0, T0;\
VPXOR T0, ACCM, ACCM
#define internalAvxDecGhashRound() \
VPSHUFB BSWAP, B0, B0; \
VPXOR ACC0, B0, B0; \
VMOVDQU (16*15)(pTbl), ACCM; \
VPCLMULQDQ $0x00, B0, T2, ACC0; \
VPCLMULQDQ $0x11, B0, T2, ACC1; \
VPSHUFD $78, B0, T0; \
VPXOR B0, T0, T0; \
VPCLMULQDQ $0x00, T0, ACCM, ACCM; \
VPXOR ACC0, ACCM, ACCM; \
VPXOR ACC1, ACCM, ACCM; \
VPSLLDQ $8, ACCM, T0; \
VPSRLDQ $8, ACCM, ACCM; \
VPXOR ACCM, ACC1, ACC1; \
VPXOR T0, ACC0, ACC0; \
avxReduceRound(ACC0); \
avxReduceRound(ACC0); \
VPXOR ACC1, ACC0, ACC0
MOVQ productTable+0(FP), pTbl
MOVQ dst+8(FP), ptx
MOVQ src_base+32(FP), ctx
MOVQ src_len+40(FP), ptxLen
MOVQ ctr+56(FP), ctrPtr
MOVQ T+64(FP), tPtr
MOVQ rk_base+72(FP), rk
CMPB ·useAVX2(SB), $1
JE avx2GcmSm4Dec
CMPB ·useAVX(SB), $1
JE avxGcmSm4Dec
MOVOU bswap_mask<>(SB), BSWAP
MOVOU gcmPoly<>(SB), POLY
MOVOU (tPtr), ACC0
PXOR ACC1, ACC1
PXOR ACCM, ACCM
MOVOU (ctrPtr), T0
PSHUFB flip_mask<>(SB), T0
PEXTRD $3, T0, aluCTR
MOVOU T0, (0*16)(SP)
increment(0)
MOVOU T0, (1*16)(SP)
increment(1)
MOVOU T0, (2*16)(SP)
increment(2)
MOVOU T0, (3*16)(SP)
increment(3)
CMPQ ptxLen, $128
JB gcmSm4DecNibbles
// We have at least 8 blocks to dencrypt, prepare the rest of the counters
MOVOU T0, (4*16)(SP)
increment(4)
MOVOU T0, (5*16)(SP)
increment(5)
MOVOU T0, (6*16)(SP)
increment(6)
MOVOU T0, (7*16)(SP)
increment(7)
gcmSm4DecOctetsLoop:
CMPQ ptxLen, $128
JB gcmSm4DecEndOctets
SUBQ $128, ptxLen
MOVOU (0*16)(SP), B0
MOVOU (1*16)(SP), B1
MOVOU (2*16)(SP), B2
MOVOU (3*16)(SP), B3
MOVOU (4*16)(SP), B4
MOVOU (5*16)(SP), B5
MOVOU (6*16)(SP), B6
MOVOU (7*16)(SP), B7
MOVOU (16*0)(ctx), T0
PSHUFB BSWAP, T0
PXOR ACC0, T0
PSHUFD $78, T0, T1
PXOR T0, T1
MOVOU (16*0)(pTbl), ACC0
MOVOU (16*1)(pTbl), ACCM
MOVOU ACC0, ACC1
PCLMULQDQ $0x00, T1, ACCM
PCLMULQDQ $0x00, T0, ACC0
PCLMULQDQ $0x11, T0, ACC1
decMulRound(1)
increment(0)
decMulRound(2)
increment(1)
decMulRound(3)
increment(2)
decMulRound(4)
increment(3)
decMulRound(5)
increment(4)
decMulRound(6)
increment(5)
decMulRound(7)
increment(6)
increment(7)
PXOR ACC0, ACCM
PXOR ACC1, ACCM
MOVOU ACCM, T0
PSRLDQ $8, ACCM
PSLLDQ $8, T0
PXOR ACCM, ACC1
PXOR T0, ACC0
reduceRound(ACC0)
reduceRound(ACC0)
PXOR ACC1, ACC0
SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
MOVOU (16*0)(ctx), T0
PXOR T0, B0
MOVOU (16*1)(ctx), T0
PXOR T0, B1
MOVOU (16*2)(ctx), T0
PXOR T0, B2
MOVOU (16*3)(ctx), T0
PXOR T0, B3
MOVOU (16*4)(ctx), T0
PXOR T0, B4
MOVOU (16*5)(ctx), T0
PXOR T0, B5
MOVOU (16*6)(ctx), T0
PXOR T0, B6
MOVOU (16*7)(ctx), T0
PXOR T0, B7
MOVOU B0, (16*0)(ptx)
MOVOU B1, (16*1)(ptx)
MOVOU B2, (16*2)(ptx)
MOVOU B3, (16*3)(ptx)
MOVOU B4, (16*4)(ptx)
MOVOU B5, (16*5)(ptx)
MOVOU B6, (16*6)(ptx)
MOVOU B7, (16*7)(ptx)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP gcmSm4DecOctetsLoop
gcmSm4DecEndOctets:
SUBQ $4, aluCTR
gcmSm4DecNibbles:
CMPQ ptxLen, $64
JBE gcmSm4DecSingles
SUBQ $64, ptxLen
MOVOU (0*16)(SP), B4
MOVOU (1*16)(SP), B5
MOVOU (2*16)(SP), B6
MOVOU (3*16)(SP), B7
SM4_4BLOCKS_WO_BS(rk, B0, T0, T1, T2, B4, B5, B6, B7)
MOVOU (16*14)(pTbl), T2
MOVOU (16*0)(ctx), B0
PXOR B0, B4
internalDecGhashRound()
increment(0)
MOVOU (16*1)(ctx), B0
PXOR B0, B5
internalDecGhashRound()
increment(1)
MOVOU (16*2)(ctx), B0
PXOR B0, B6
internalDecGhashRound()
increment(2)
MOVOU (16*3)(ctx), B0
PXOR B0, B7
internalDecGhashRound()
increment(3)
MOVOU B4, (16*0)(ptx)
MOVOU B5, (16*1)(ptx)
MOVOU B6, (16*2)(ptx)
MOVOU B7, (16*3)(ptx)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
gcmSm4DecSingles:
TESTQ ptxLen, ptxLen
JE gcmSm4DecDone
MOVOU (0*16)(SP), B0
MOVOU (1*16)(SP), B1
MOVOU (2*16)(SP), B2
MOVOU (3*16)(SP), B3
SM4_4BLOCKS_WO_BS(rk, B4, T0, T1, T2, B0, B1, B2, B3)
MOVOU B0, (16*4)(SP)
MOVOU B1, (16*5)(SP)
MOVOU B2, (16*6)(SP)
MOVOU B3, (16*7)(SP)
MOVOU (16*14)(pTbl), T2
MOVQ SP, BP
ADDQ $64, BP
gcmSm4DecSinglesLoop:
CMPQ ptxLen, $16
JB gcmSm4DecTail
SUBQ $16, ptxLen
MOVOU (16*0)(BP), B1
MOVOU (ctx), T0
PXOR T0, B1
decGhashRound(0)
MOVOU B1, (ptx)
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP gcmSm4DecSinglesLoop
gcmSm4DecTail:
TESTQ ptxLen, ptxLen
JE gcmSm4DecDone
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
MOVOU -16(aluCTR)(aluTMP*1), T1
MOVOU (ctx), B0 // I assume there is TAG attached to the ctx, and there is no read overflow
PAND T1, B0
MOVOU B0, T1
internalDecGhashRound()
MOVOU (16*0)(BP), B0
PXOR T1, B0
ptxStoreLoop:
PEXTRB $0, B0, (ptx)
PSRLDQ $1, B0
LEAQ 1(ptx), ptx
DECQ ptxLen
JNE ptxStoreLoop
gcmSm4DecDone:
MOVOU ACC0, (tPtr)
RET
avxGcmSm4Dec:
VMOVDQU bswap_mask<>(SB), BSWAP
VMOVDQU gcmPoly<>(SB), POLY
VMOVDQU (tPtr), ACC0
VPXOR ACC1, ACC1, ACC1
VPXOR ACCM, ACCM, ACCM
VMOVDQU (ctrPtr), T0
VPSHUFB flip_mask<>(SB), T0, T0
VPEXTRD $3, T0, aluCTR
VMOVDQU T0, (0*16)(SP)
increment(0)
VMOVDQU T0, (1*16)(SP)
increment(1)
VMOVDQU T0, (2*16)(SP)
increment(2)
VMOVDQU T0, (3*16)(SP)
increment(3)
CMPQ ptxLen, $128
JB avxGcmSm4DecNibbles
// We have at least 8 blocks to dencrypt, prepare the rest of the counters
VMOVDQU T0, (4*16)(SP)
increment(4)
VMOVDQU T0, (5*16)(SP)
increment(5)
VMOVDQU T0, (6*16)(SP)
increment(6)
VMOVDQU T0, (7*16)(SP)
increment(7)
avxGcmSm4DecOctetsLoop:
CMPQ ptxLen, $128
JB avxGcmSm4DecEndOctets
SUBQ $128, ptxLen
VMOVDQU (0*16)(SP), B0
VMOVDQU (1*16)(SP), B1
VMOVDQU (2*16)(SP), B2
VMOVDQU (3*16)(SP), B3
VMOVDQU (4*16)(SP), B4
VMOVDQU (5*16)(SP), B5
VMOVDQU (6*16)(SP), B6
VMOVDQU (7*16)(SP), B7
VMOVDQU (16*0)(ctx), T0
VPSHUFB BSWAP, T0, T0
VPXOR ACC0, T0, T0
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VMOVDQU (16*0)(pTbl), ACC1
VMOVDQU (16*1)(pTbl), ACCM
VPCLMULQDQ $0x00, T1, ACCM, ACCM
VPCLMULQDQ $0x00, T0, ACC1, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
avxDecMulRound(1)
increment(0)
avxDecMulRound(2)
increment(1)
avxDecMulRound(3)
increment(2)
avxDecMulRound(4)
increment(3)
avxDecMulRound(5)
increment(4)
avxDecMulRound(6)
increment(5)
avxDecMulRound(7)
increment(6)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
increment(7)
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
AVX_SM4_8BLOCKS_WO_BS(rk, ACC1, T0, T1, T2, B0, B1, B2, B3, B4, B5, B6, B7)
VPXOR (16*0)(ctx), B0, B0
VPXOR (16*1)(ctx), B1, B1
VPXOR (16*2)(ctx), B2, B2
VPXOR (16*3)(ctx), B3, B3
VPXOR (16*4)(ctx), B4, B4
VPXOR (16*5)(ctx), B5, B5
VPXOR (16*6)(ctx), B6, B6
VPXOR (16*7)(ctx), B7, B7
VMOVDQU B0, (16*0)(ptx)
VMOVDQU B1, (16*1)(ptx)
VMOVDQU B2, (16*2)(ptx)
VMOVDQU B3, (16*3)(ptx)
VMOVDQU B4, (16*4)(ptx)
VMOVDQU B5, (16*5)(ptx)
VMOVDQU B6, (16*6)(ptx)
VMOVDQU B7, (16*7)(ptx)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP avxGcmSm4DecOctetsLoop
avxGcmSm4DecEndOctets:
SUBQ $4, aluCTR
avxGcmSm4DecNibbles:
CMPQ ptxLen, $64
JBE avxGcmSm4DecSingles
SUBQ $64, ptxLen
VMOVDQU (0*16)(SP), B4
VMOVDQU (1*16)(SP), B5
VMOVDQU (2*16)(SP), B6
VMOVDQU (3*16)(SP), B7
AVX_SM4_4BLOCKS_WO_BS(rk, B0, B1, T1, T2, B4, B5, B6, B7)
VMOVDQU (16*14)(pTbl), T2
VMOVDQU (16*0)(ctx), B0
VPXOR B0, B4, B4
internalAvxDecGhashRound()
increment(0)
VMOVDQU (16*1)(ctx), B0
VPXOR B0, B5, B5
internalAvxDecGhashRound()
increment(1)
VMOVDQU (16*2)(ctx), B0
VPXOR B0, B6, B6
internalAvxDecGhashRound()
increment(2)
VMOVDQU (16*3)(ctx), B0
VPXOR B0, B7, B7
internalAvxDecGhashRound()
increment(3)
VMOVDQU B4, (16*0)(ptx)
VMOVDQU B5, (16*1)(ptx)
VMOVDQU B6, (16*2)(ptx)
VMOVDQU B7, (16*3)(ptx)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
avxGcmSm4DecSingles:
TESTQ ptxLen, ptxLen
JE avxGcmSm4DecDone
VMOVDQU (0*16)(SP), B0
VMOVDQU (1*16)(SP), B1
VMOVDQU (2*16)(SP), B2
VMOVDQU (3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B7, B6, B5, B4, B0, B1, B2, B3)
VMOVDQU B0, (16*4)(SP)
VMOVDQU B1, (16*5)(SP)
VMOVDQU B2, (16*6)(SP)
VMOVDQU B3, (16*7)(SP)
VMOVDQU (16*14)(pTbl), T2
MOVQ SP, BP
ADDQ $64, BP
avxGcmSm4DecSinglesLoop:
CMPQ ptxLen, $16
JB avxGcmSm4DecTail
SUBQ $16, ptxLen
VMOVDQU (16*0)(BP), T0
VMOVDQU (ctx), B0
VPXOR T0, B0, T0
VMOVDQU T0, (ptx)
internalAvxDecGhashRound()
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP avxGcmSm4DecSinglesLoop
avxGcmSm4DecTail:
TESTQ ptxLen, ptxLen
JE avxGcmSm4DecDone
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
VMOVDQU -16(aluCTR)(aluTMP*1), T1
VMOVDQU (ctx), B0 // I assume there is TAG attached to the ctx, and there is no read overflow
VPAND T1, B0, B0
VMOVDQU B0, T1
internalAvxDecGhashRound()
VMOVDQU (16*0)(BP), B0
VPXOR T1, B0, B0
avxPtxStoreLoop:
VPEXTRB $0, B0, (ptx)
VPSRLDQ $1, B0, B0
LEAQ 1(ptx), ptx
DECQ ptxLen
JNE avxPtxStoreLoop
avxGcmSm4DecDone:
VMOVDQU ACC0, (tPtr)
RET
avx2GcmSm4Dec:
VMOVDQU bswap_mask<>(SB), BSWAP
VMOVDQU gcmPoly<>(SB), POLY
VMOVDQU (tPtr), ACC0
VPXOR ACC1, ACC1, ACC1
VPXOR ACCM, ACCM, ACCM
VMOVDQU (ctrPtr), T0
VPSHUFB flip_mask<>(SB), T0, T0
VPEXTRD $3, T0, aluCTR
VINSERTI128 $1, T0, Y11, Y11
VMOVDQU Y11, (0*32)(SP)
increment(0)
increment(1)
VMOVDQU Y11, (1*32)(SP)
increment(2)
increment(3)
CMPQ ptxLen, $128
JB avx2GcmSm4DecNibbles
// We have at least 8 blocks to dencrypt, prepare the rest of the counters
VMOVDQU Y11, (2*32)(SP)
increment(4)
increment(5)
VMOVDQU Y11, (3*32)(SP)
increment(6)
increment(7)
VBROADCASTI128 bswap_mask<>(SB), DWBSWAP
VBROADCASTI128 nibble_mask<>(SB), NIBBLE_MASK
avx2GcmSm4DecOctetsLoop:
CMPQ ptxLen, $128
JB avx2GcmSm4DecEndOctets
SUBQ $128, ptxLen
// load 8 ctrs for encryption
VMOVDQU (0*32)(SP), DWB0
VMOVDQU (1*32)(SP), DWB1
VMOVDQU (2*32)(SP), DWB2
VMOVDQU (3*32)(SP), DWB3
VMOVDQU (16*0)(ctx), T0
VPSHUFB BSWAP, T0, T0
VPXOR ACC0, T0, T0
VPSHUFD $78, T0, T1
VPXOR T0, T1, T1
VMOVDQU (16*0)(pTbl), ACC1
VMOVDQU (16*1)(pTbl), ACCM
VPCLMULQDQ $0x00, T1, ACCM, ACCM
VPCLMULQDQ $0x00, T0, ACC1, ACC0
VPCLMULQDQ $0x11, T0, ACC1, ACC1
avxDecMulRound(1)
increment(0)
avxDecMulRound(2)
increment(1)
avxDecMulRound(3)
increment(2)
avxDecMulRound(4)
increment(3)
avxDecMulRound(5)
increment(4)
avxDecMulRound(6)
increment(5)
avxDecMulRound(7)
increment(6)
VPXOR ACC0, ACCM, ACCM
VPXOR ACC1, ACCM, ACCM
VPSLLDQ $8, ACCM, T0
VPSRLDQ $8, ACCM, ACCM
VPXOR ACCM, ACC1, ACC1
VPXOR T0, ACC0, ACC0
increment(7)
avxReduceRound(ACC0)
avxReduceRound(ACC0)
VPXOR ACC1, ACC0, ACC0
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
AVX2_SM4_8BLOCKS(rk, XDWORD, YDWORD, X1, X3, XDWTMP0, DWB0, DWB1, DWB2, DWB3)
// Transpose matrix 4 x 4 32bits word
TRANSPOSE_MATRIX(DWB0, DWB1, DWB2, DWB3, XDWORD, YDWORD)
VPSHUFB DWBSWAP, DWB0, DWB0
VPSHUFB DWBSWAP, DWB1, DWB1
VPSHUFB DWBSWAP, DWB2, DWB2
VPSHUFB DWBSWAP, DWB3, DWB3
VPXOR (32*0)(ctx), DWB0, DWB0
VPXOR (32*1)(ctx), DWB1, DWB1
VPXOR (32*2)(ctx), DWB2, DWB2
VPXOR (32*3)(ctx), DWB3, DWB3
VMOVDQU DWB0, (32*0)(ptx)
VMOVDQU DWB1, (32*1)(ptx)
VMOVDQU DWB2, (32*2)(ptx)
VMOVDQU DWB3, (32*3)(ptx)
LEAQ 128(ptx), ptx
LEAQ 128(ctx), ctx
JMP avx2GcmSm4DecOctetsLoop
avx2GcmSm4DecEndOctets:
SUBQ $4, aluCTR
avx2GcmSm4DecNibbles:
CMPQ ptxLen, $64
JBE avx2GcmSm4DecSingles
SUBQ $64, ptxLen
VMOVDQU (0*16)(SP), B4
VMOVDQU (1*16)(SP), B1
VMOVDQU (2*16)(SP), B2
VMOVDQU (3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B0, B5, B6, B7, B4, B1, B2, B3)
VMOVDQU (16*14)(pTbl), T2
VMOVDQU (16*0)(ctx), B0
VPXOR B0, B4, B4
increment(0)
internalAvxDecGhashRound()
VMOVDQU (16*1)(ctx), B0
VPXOR B0, B1, B1
increment(1)
internalAvxDecGhashRound()
VMOVDQU (16*2)(ctx), B0
VPXOR B0, B2, B2
increment(2)
internalAvxDecGhashRound()
VMOVDQU (16*3)(ctx), B0
VPXOR B0, B3, B3
increment(3)
internalAvxDecGhashRound()
VMOVDQU B4, (16*0)(ptx)
VMOVDQU B1, (16*1)(ptx)
VMOVDQU B2, (16*2)(ptx)
VMOVDQU B3, (16*3)(ptx)
LEAQ 64(ptx), ptx
LEAQ 64(ctx), ctx
avx2GcmSm4DecSingles:
TESTQ ptxLen, ptxLen
JE avx2GcmSm4DecDone
VMOVDQU (0*16)(SP), B0
VMOVDQU (1*16)(SP), B1
VMOVDQU (2*16)(SP), B2
VMOVDQU (3*16)(SP), B3
AVX_SM4_4BLOCKS_WO_BS(rk, B4, B5, B6, B7, B0, B1, B2, B3)
VMOVDQU B0, (16*4)(SP)
VMOVDQU B1, (16*5)(SP)
VMOVDQU B2, (16*6)(SP)
VMOVDQU B3, (16*7)(SP)
VMOVDQU (16*14)(pTbl), T2
MOVQ SP, BP
ADDQ $64, BP
avx2GcmSm4DecSinglesLoop:
CMPQ ptxLen, $16
JB avx2GcmSm4DecTail
SUBQ $16, ptxLen
VMOVDQU (16*0)(BP), T0
VMOVDQU (ctx), B0
VPXOR T0, B0, T0
VMOVDQU T0, (ptx)
internalAvxDecGhashRound()
LEAQ (16*1)(ptx), ptx
LEAQ (16*1)(ctx), ctx
ADDQ $16, BP
JMP avx2GcmSm4DecSinglesLoop
avx2GcmSm4DecTail:
TESTQ ptxLen, ptxLen
JE avx2GcmSm4DecDone
MOVQ ptxLen, aluTMP
SHLQ $4, aluTMP
LEAQ andMask<>(SB), aluCTR
VMOVDQU -16(aluCTR)(aluTMP*1), T1 // Fetch and-mask according ptxLen
VMOVDQU (ctx), B0 // I assume there is TAG attached to the ctx, and there is no read overflow
VPAND T1, B0, B0 // Just keep ptxLen bytes, others will be zero
VMOVDQU B0, T1
internalAvxDecGhashRound()
VMOVDQU (16*0)(BP), B0
VPXOR T1, B0, B0
avx2PtxStoreLoop:
VPEXTRB $0, B0, (ptx)
VPSRLDQ $1, B0, B0
LEAQ 1(ptx), ptx
DECQ ptxLen
JNE avx2PtxStoreLoop
avx2GcmSm4DecDone:
VMOVDQU ACC0, (tPtr)
VZEROUPPER
RET
// func gcmSm4niEnc(productTable *[256]byte, dst, src []byte, ctr, T *[16]byte, rk []uint32)
TEXT ·gcmSm4niEnc(SB),NOSPLIT,$0
RET
// func gcmSm4niDec(productTable *[256]byte, dst, src []byte, ctr, T *[16]byte, rk []uint32)
TEXT ·gcmSm4niDec(SB),NOSPLIT,$0
RET
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