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- //+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
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