mirror of
https://github.com/emmansun/gmsm.git
synced 2025-04-25 03:36:18 +08:00
26 lines
668 B
ArmAsm
26 lines
668 B
ArmAsm
|
|
||
|
|
// Copyright 2016 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
|
||
|
|
|
||
|
|
#include "textflag.h"
|
||
|
|
|
||
|
|
// func ghash(key *gcmHashKey, hash *[16]byte, data []byte)
|
||
|
|
TEXT ·ghash(SB),NOSPLIT,$32-40
|
||
|
|
MOVD $65, R0 // GHASH function code
|
||
|
|
MOVD key+0(FP), R2
|
||
|
|
LMG (R2), R6, R7
|
||
|
|
MOVD hash+8(FP), R8
|
||
|
|
LMG (R8), R4, R5
|
||
|
|
MOVD $params-32(SP), R1
|
||
|
|
STMG R4, R7, (R1)
|
||
|
|
LMG data+16(FP), R2, R3 // R2=base, R3=len
|
||
|
|
loop:
|
||
|
|
WORD $0xB93E0002 // compute intermediate message digest (KIMD)
|
||
|
|
BVS loop // branch back if interrupted
|
||
|
|
MVC $16, (R1), (R8)
|
||
|
|
MOVD $0, R0
|
||
|
|
RET
|