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// Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build !purego && (ppc64 || ppc64le) #include "textflag.h" // func addMulVVW1024(z, x *uint, y uint) (c uint) TEXT ·addMulVVW1024(SB), $0-32 MOVD $16, R22 // R22 = z_len JMP addMulVVWx(SB) // func addMulVVW1536(z, x *uint, y uint) (c uint) TEXT ·addMulVVW1536(SB), $0-32 MOVD $24, R22 // R22 = z_len JMP addMulVVWx(SB) // func addMulVVW2048(z, x *uint, y uint) (c uint) TEXT ·addMulVVW2048(SB), $0-32 MOVD $32, R22 // R22 = z_len JMP addMulVVWx(SB) TEXT addMulVVWx(SB), NOFRAME|NOSPLIT, $0 MOVD z+0(FP), R10 // R10 = z[] MOVD x+8(FP), R8 // R8 = x[] MOVD y+16(FP), R9 // R9 = y MOVD R0, R3 // R3 will be the index register CMP R0, R22 MOVD R0, R4 // R4 = c = 0 MOVD R22, CTR // Initialize loop counter BEQ done PCALIGN $16 loop: MOVD (R8)(R3), R20 // Load x[i] MOVD (R10)(R3), R21 // Load z[i] MULLD R9, R20, R6 // R6 = Low-order(x[i]*y) MULHDU R9, R20, R7 // R7 = High-order(x[i]*y) ADDC R21, R6 // R6 = z0 ADDZE R7 // R7 = z1 ADDC R4, R6 // R6 = z0 + c + 0 ADDZE R7, R4 // c += z1 MOVD R6, (R10)(R3) // Store z[i] ADD $8, R3 BC 16, 0, loop // bdnz done: MOVD R4, c+24(FP) RET