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Diffstat (limited to 'vendor/github.com/klauspost/reedsolomon/galois_ppc64le.s')
| -rw-r--r-- | vendor/github.com/klauspost/reedsolomon/galois_ppc64le.s | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/vendor/github.com/klauspost/reedsolomon/galois_ppc64le.s b/vendor/github.com/klauspost/reedsolomon/galois_ppc64le.s new file mode 100644 index 0000000..8838f0c --- /dev/null +++ b/vendor/github.com/klauspost/reedsolomon/galois_ppc64le.s @@ -0,0 +1,124 @@ +//+build !noasm !appengine !gccgo + +// Copyright 2015, Klaus Post, see LICENSE for details. +// Copyright 2018, Minio, Inc. + +#include "textflag.h" + +#define LOW R3 +#define HIGH R4 +#define IN R5 +#define LEN R6 +#define OUT R7 +#define CONSTANTS R8 +#define OFFSET R9 +#define OFFSET1 R10 +#define OFFSET2 R11 + +#define X6 VS34 +#define X6_ V2 +#define X7 VS35 +#define X7_ V3 +#define MSG VS36 +#define MSG_ V4 +#define MSG_HI VS37 +#define MSG_HI_ V5 +#define RESULT VS38 +#define RESULT_ V6 +#define ROTATE VS39 +#define ROTATE_ V7 +#define MASK VS40 +#define MASK_ V8 +#define FLIP VS41 +#define FLIP_ V9 + +// func galMulPpc(low, high, in, out []byte) +TEXT ·galMulPpc(SB), NOFRAME|NOSPLIT, $0-96 + MOVD low+0(FP), LOW + MOVD high+24(FP), HIGH + MOVD in+48(FP), IN + MOVD in_len+56(FP), LEN + MOVD out+72(FP), OUT + + MOVD $16, OFFSET1 + MOVD $32, OFFSET2 + + MOVD $·constants(SB), CONSTANTS + LXVD2X (CONSTANTS)(R0), ROTATE + LXVD2X (CONSTANTS)(OFFSET1), MASK + LXVD2X (CONSTANTS)(OFFSET2), FLIP + + LXVD2X (LOW)(R0), X6 + LXVD2X (HIGH)(R0), X7 + VPERM X6_, V31, FLIP_, X6_ + VPERM X7_, V31, FLIP_, X7_ + + MOVD $0, OFFSET + +loop: + LXVD2X (IN)(OFFSET), MSG + + VSRB MSG_, ROTATE_, MSG_HI_ + VAND MSG_, MASK_, MSG_ + VPERM X6_, V31, MSG_, MSG_ + VPERM X7_, V31, MSG_HI_, MSG_HI_ + + VXOR MSG_, MSG_HI_, MSG_ + + STXVD2X MSG, (OUT)(OFFSET) + + ADD $16, OFFSET, OFFSET + CMP LEN, OFFSET + BGT loop + RET + +// func galMulPpcXorlow, high, in, out []byte) +TEXT ·galMulPpcXor(SB), NOFRAME|NOSPLIT, $0-96 + MOVD low+0(FP), LOW + MOVD high+24(FP), HIGH + MOVD in+48(FP), IN + MOVD in_len+56(FP), LEN + MOVD out+72(FP), OUT + + MOVD $16, OFFSET1 + MOVD $32, OFFSET2 + + MOVD $·constants(SB), CONSTANTS + LXVD2X (CONSTANTS)(R0), ROTATE + LXVD2X (CONSTANTS)(OFFSET1), MASK + LXVD2X (CONSTANTS)(OFFSET2), FLIP + + LXVD2X (LOW)(R0), X6 + LXVD2X (HIGH)(R0), X7 + VPERM X6_, V31, FLIP_, X6_ + VPERM X7_, V31, FLIP_, X7_ + + MOVD $0, OFFSET + +loopXor: + LXVD2X (IN)(OFFSET), MSG + LXVD2X (OUT)(OFFSET), RESULT + + VSRB MSG_, ROTATE_, MSG_HI_ + VAND MSG_, MASK_, MSG_ + VPERM X6_, V31, MSG_, MSG_ + VPERM X7_, V31, MSG_HI_, MSG_HI_ + + VXOR MSG_, MSG_HI_, MSG_ + VXOR MSG_, RESULT_, RESULT_ + + STXVD2X RESULT, (OUT)(OFFSET) + + ADD $16, OFFSET, OFFSET + CMP LEN, OFFSET + BGT loopXor + RET + +DATA ·constants+0x0(SB)/8, $0x0404040404040404 +DATA ·constants+0x8(SB)/8, $0x0404040404040404 +DATA ·constants+0x10(SB)/8, $0x0f0f0f0f0f0f0f0f +DATA ·constants+0x18(SB)/8, $0x0f0f0f0f0f0f0f0f +DATA ·constants+0x20(SB)/8, $0x0706050403020100 +DATA ·constants+0x28(SB)/8, $0x0f0e0d0c0b0a0908 + +GLOBL ·constants(SB), 8, $48 |