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| author | Péter Szilágyi <peterke@gmail.com> | 2018-03-20 00:13:54 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-03-20 00:13:54 +0800 |
| commit | 1203c6a237cb87b78ec495772cecb178200499ce (patch) | |
| tree | a51e6c3a24e43f265fc5c9b4f2bdb7ff7de6a8db /crypto/bn256/cloudflare/gfp_arm64.s | |
| parent | 0965761a45562d609f6036963dbac84561174677 (diff) | |
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crypto/bn256: full switchover to cloudflare's code (#16301)
* crypto/bn256: full switchover to cloudflare's code
* crypto/bn256: only use cloudflare for optimized architectures
* crypto/bn256: upstream fallback for non-optimized code
* .travis, build: drop support for Go 1.8 (need type aliases)
* crypto/bn256/cloudflare: enable curve mul lattice optimization
Diffstat (limited to 'crypto/bn256/cloudflare/gfp_arm64.s')
| -rw-r--r-- | crypto/bn256/cloudflare/gfp_arm64.s | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/crypto/bn256/cloudflare/gfp_arm64.s b/crypto/bn256/cloudflare/gfp_arm64.s new file mode 100644 index 000000000..c65e80168 --- /dev/null +++ b/crypto/bn256/cloudflare/gfp_arm64.s @@ -0,0 +1,113 @@ +// +build arm64,!generic + +#define storeBlock(a0,a1,a2,a3, r) \ + MOVD a0, 0+r \ + MOVD a1, 8+r \ + MOVD a2, 16+r \ + MOVD a3, 24+r + +#define loadBlock(r, a0,a1,a2,a3) \ + MOVD 0+r, a0 \ + MOVD 8+r, a1 \ + MOVD 16+r, a2 \ + MOVD 24+r, a3 + +#define loadModulus(p0,p1,p2,p3) \ + MOVD ·p2+0(SB), p0 \ + MOVD ·p2+8(SB), p1 \ + MOVD ·p2+16(SB), p2 \ + MOVD ·p2+24(SB), p3 + +#include "mul_arm64.h" + +TEXT ·gfpNeg(SB),0,$0-16 + MOVD a+8(FP), R0 + loadBlock(0(R0), R1,R2,R3,R4) + loadModulus(R5,R6,R7,R8) + + SUBS R1, R5, R1 + SBCS R2, R6, R2 + SBCS R3, R7, R3 + SBCS R4, R8, R4 + + SUBS R5, R1, R5 + SBCS R6, R2, R6 + SBCS R7, R3, R7 + SBCS R8, R4, R8 + + CSEL CS, R5, R1, R1 + CSEL CS, R6, R2, R2 + CSEL CS, R7, R3, R3 + CSEL CS, R8, R4, R4 + + MOVD c+0(FP), R0 + storeBlock(R1,R2,R3,R4, 0(R0)) + RET + +TEXT ·gfpAdd(SB),0,$0-24 + MOVD a+8(FP), R0 + loadBlock(0(R0), R1,R2,R3,R4) + MOVD b+16(FP), R0 + loadBlock(0(R0), R5,R6,R7,R8) + loadModulus(R9,R10,R11,R12) + MOVD ZR, R0 + + ADDS R5, R1 + ADCS R6, R2 + ADCS R7, R3 + ADCS R8, R4 + ADCS ZR, R0 + + SUBS R9, R1, R5 + SBCS R10, R2, R6 + SBCS R11, R3, R7 + SBCS R12, R4, R8 + SBCS ZR, R0, R0 + + CSEL CS, R5, R1, R1 + CSEL CS, R6, R2, R2 + CSEL CS, R7, R3, R3 + CSEL CS, R8, R4, R4 + + MOVD c+0(FP), R0 + storeBlock(R1,R2,R3,R4, 0(R0)) + RET + +TEXT ·gfpSub(SB),0,$0-24 + MOVD a+8(FP), R0 + loadBlock(0(R0), R1,R2,R3,R4) + MOVD b+16(FP), R0 + loadBlock(0(R0), R5,R6,R7,R8) + loadModulus(R9,R10,R11,R12) + + SUBS R5, R1 + SBCS R6, R2 + SBCS R7, R3 + SBCS R8, R4 + + CSEL CS, ZR, R9, R9 + CSEL CS, ZR, R10, R10 + CSEL CS, ZR, R11, R11 + CSEL CS, ZR, R12, R12 + + ADDS R9, R1 + ADCS R10, R2 + ADCS R11, R3 + ADCS R12, R4 + + MOVD c+0(FP), R0 + storeBlock(R1,R2,R3,R4, 0(R0)) + RET + +TEXT ·gfpMul(SB),0,$0-24 + MOVD a+8(FP), R0 + loadBlock(0(R0), R1,R2,R3,R4) + MOVD b+16(FP), R0 + loadBlock(0(R0), R5,R6,R7,R8) + + mul(R9,R10,R11,R12,R13,R14,R15,R16) + gfpReduce() + + MOVD c+0(FP), R0 + storeBlock(R1,R2,R3,R4, 0(R0)) + RET |