diff options
Diffstat (limited to 'vendor/github.com/dchest/siphash/blocks_amd64.s')
| -rw-r--r-- | vendor/github.com/dchest/siphash/blocks_amd64.s | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/github.com/dchest/siphash/blocks_amd64.s b/vendor/github.com/dchest/siphash/blocks_amd64.s new file mode 100644 index 0000000..2d4816f --- /dev/null +++ b/vendor/github.com/dchest/siphash/blocks_amd64.s @@ -0,0 +1,86 @@ +// +build amd64,!appengine,!gccgo + +#define ROUND(v0, v1, v2, v3) \ + ADDQ v1, v0; \ + RORQ $51, v1; \ + ADDQ v3, v2; \ + XORQ v0, v1; \ + RORQ $48, v3; \ + RORQ $32, v0; \ + XORQ v2, v3; \ + ADDQ v1, v2; \ + ADDQ v3, v0; \ + RORQ $43, v3; \ + RORQ $47, v1; \ + XORQ v0, v3; \ + XORQ v2, v1; \ + RORQ $32, v2 + +// blocks(d *digest, data []uint8) +TEXT ·blocks(SB),4,$0-32 + MOVQ d+0(FP), BX + MOVQ 0(BX), R9 // R9 = v0 + MOVQ 8(BX), R10 // R10 = v1 + MOVQ 16(BX), R11 // R11 = v2 + MOVQ 24(BX), R12 // R12 = v3 + MOVQ p_base+8(FP), DI // DI = *uint64 + MOVQ p_len+16(FP), SI // SI = nblocks + XORL DX, DX // DX = index (0) + SHRQ $3, SI // SI /= 8 +body: + CMPQ DX, SI + JGE end + MOVQ 0(DI)(DX*8), CX // CX = m + XORQ CX, R12 + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + XORQ CX, R9 + ADDQ $1, DX + JMP body +end: + MOVQ R9, 0(BX) + MOVQ R10, 8(BX) + MOVQ R11, 16(BX) + MOVQ R12, 24(BX) + RET + +// once(d *digest) +TEXT ·once(SB),4,$0-8 + MOVQ d+0(FP), BX + MOVQ 0(BX), R9 // R9 = v0 + MOVQ 8(BX), R10 // R10 = v1 + MOVQ 16(BX), R11 // R11 = v2 + MOVQ 24(BX), R12 // R12 = v3 + MOVQ 48(BX), CX // CX = d.x[:] + XORQ CX, R12 + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + XORQ CX, R9 + MOVQ R9, 0(BX) + MOVQ R10, 8(BX) + MOVQ R11, 16(BX) + MOVQ R12, 24(BX) + RET + +// finalize(d *digest) uint64 +TEXT ·finalize(SB),4,$0-16 + MOVQ d+0(FP), BX + MOVQ 0(BX), R9 // R9 = v0 + MOVQ 8(BX), R10 // R10 = v1 + MOVQ 16(BX), R11 // R11 = v2 + MOVQ 24(BX), R12 // R12 = v3 + MOVQ 48(BX), CX // CX = d.x[:] + XORQ CX, R12 + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + XORQ CX, R9 + NOTB R11 + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + ROUND(R9, R10, R11, R12) + XORQ R12, R11 + XORQ R10, R9 + XORQ R11, R9 + MOVQ R9, ret+8(FP) + RET |