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129 lines
2.2 KiB
129 lines
2.2 KiB
// +build amd64,!generic
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#define storeBlock(a0,a1,a2,a3, r) \
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MOVQ a0, 0+r \
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MOVQ a1, 8+r \
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MOVQ a2, 16+r \
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MOVQ a3, 24+r
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#define loadBlock(r, a0,a1,a2,a3) \
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MOVQ 0+r, a0 \
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MOVQ 8+r, a1 \
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MOVQ 16+r, a2 \
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MOVQ 24+r, a3
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#define gfpCarry(a0,a1,a2,a3,a4, b0,b1,b2,b3,b4) \
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\ // b = a-p
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MOVQ a0, b0 \
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MOVQ a1, b1 \
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MOVQ a2, b2 \
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MOVQ a3, b3 \
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MOVQ a4, b4 \
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\
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SUBQ ·p2+0(SB), b0 \
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SBBQ ·p2+8(SB), b1 \
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SBBQ ·p2+16(SB), b2 \
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SBBQ ·p2+24(SB), b3 \
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SBBQ $0, b4 \
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\
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\ // if b is negative then return a
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\ // else return b
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CMOVQCC b0, a0 \
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CMOVQCC b1, a1 \
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CMOVQCC b2, a2 \
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CMOVQCC b3, a3
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#include "mul_amd64.h"
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#include "mul_bmi2_amd64.h"
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TEXT ·gfpNeg(SB),0,$0-16
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MOVQ ·p2+0(SB), R8
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MOVQ ·p2+8(SB), R9
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MOVQ ·p2+16(SB), R10
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MOVQ ·p2+24(SB), R11
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MOVQ a+8(FP), DI
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SUBQ 0(DI), R8
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SBBQ 8(DI), R9
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SBBQ 16(DI), R10
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SBBQ 24(DI), R11
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MOVQ $0, AX
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gfpCarry(R8,R9,R10,R11,AX, R12,R13,R14,CX,BX)
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MOVQ c+0(FP), DI
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storeBlock(R8,R9,R10,R11, 0(DI))
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RET
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TEXT ·gfpAdd(SB),0,$0-24
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MOVQ a+8(FP), DI
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MOVQ b+16(FP), SI
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loadBlock(0(DI), R8,R9,R10,R11)
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MOVQ $0, R12
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ADDQ 0(SI), R8
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ADCQ 8(SI), R9
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ADCQ 16(SI), R10
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ADCQ 24(SI), R11
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ADCQ $0, R12
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gfpCarry(R8,R9,R10,R11,R12, R13,R14,CX,AX,BX)
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MOVQ c+0(FP), DI
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storeBlock(R8,R9,R10,R11, 0(DI))
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RET
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TEXT ·gfpSub(SB),0,$0-24
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MOVQ a+8(FP), DI
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MOVQ b+16(FP), SI
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loadBlock(0(DI), R8,R9,R10,R11)
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MOVQ ·p2+0(SB), R12
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MOVQ ·p2+8(SB), R13
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MOVQ ·p2+16(SB), R14
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MOVQ ·p2+24(SB), CX
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MOVQ $0, AX
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SUBQ 0(SI), R8
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SBBQ 8(SI), R9
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SBBQ 16(SI), R10
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SBBQ 24(SI), R11
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CMOVQCC AX, R12
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CMOVQCC AX, R13
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CMOVQCC AX, R14
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CMOVQCC AX, CX
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ADDQ R12, R8
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ADCQ R13, R9
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ADCQ R14, R10
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ADCQ CX, R11
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MOVQ c+0(FP), DI
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storeBlock(R8,R9,R10,R11, 0(DI))
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RET
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TEXT ·gfpMul(SB),0,$160-24
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MOVQ a+8(FP), DI
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MOVQ b+16(FP), SI
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// Jump to a slightly different implementation if MULX isn't supported.
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CMPB ·hasBMI2(SB), $0
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JE nobmi2Mul
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mulBMI2(0(DI),8(DI),16(DI),24(DI), 0(SI))
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storeBlock( R8, R9,R10,R11, 0(SP))
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storeBlock(R12,R13,R14,CX, 32(SP))
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gfpReduceBMI2()
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JMP end
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nobmi2Mul:
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mul(0(DI),8(DI),16(DI),24(DI), 0(SI), 0(SP))
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gfpReduce(0(SP))
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end:
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MOVQ c+0(FP), DI
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storeBlock(R12,R13,R14,CX, 0(DI))
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RET
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