mirror of
https://github.com/fumiama/unibase2n.git
synced 2026-06-07 18:02:39 +08:00
67 lines
1.1 KiB
ArmAsm
67 lines
1.1 KiB
ArmAsm
//go:build amd64
|
|
// +build amd64
|
|
|
|
#include "textflag.h"
|
|
|
|
// enc16blk1(mask uint16, in, out []byte)
|
|
// for bit 1 (actual enc128blk1)
|
|
TEXT ·enc16blk1(SB), NOSPLIT, $0-56
|
|
// create mask
|
|
MOVQ ·mask+0(FP), BX
|
|
ANDQ $0xffff, BX
|
|
BSWAPQ BX
|
|
MOVQ BX, AX
|
|
SHRQ $16, AX
|
|
ORQ AX, BX
|
|
SHRQ $16, AX
|
|
ORQ AX, BX
|
|
SHRQ $16, AX
|
|
ORQ AX, BX
|
|
// load source addr
|
|
MOVQ ·in+8(FP), SI
|
|
// load source len
|
|
MOVQ ·inlen+16(FP), CX
|
|
// load dest addr
|
|
MOVQ ·out+32(FP), DI
|
|
// go forward
|
|
CLD
|
|
lop:
|
|
LODSB
|
|
// 8 -> 64
|
|
XORQ DX, DX
|
|
SHLB $1, AX
|
|
SETCS DX
|
|
SHLQ $16, DX
|
|
SHLB $1, AX
|
|
SETCS DX
|
|
SHLQ $16, DX
|
|
SHLB $1, AX
|
|
SETCS DX
|
|
SHLQ $16, DX
|
|
SHLB $1, AX
|
|
SETCS DX
|
|
// add mask
|
|
MOVQ AX, R8
|
|
LEAQ 0(DX)(BX*1), AX
|
|
BSWAPQ AX
|
|
STOSQ
|
|
// 8 -> 64
|
|
XORQ AX, AX
|
|
SHLB $1, R8
|
|
SETCS AX
|
|
SHLQ $16, AX
|
|
SHLB $1, R8
|
|
SETCS AX
|
|
SHLQ $16, AX
|
|
SHLB $1, R8
|
|
SETCS AX
|
|
SHLQ $16, AX
|
|
SHLB $1, R8
|
|
SETCS AX
|
|
// add mask
|
|
ADDQ BX, AX
|
|
BSWAPQ AX
|
|
STOSQ
|
|
LOOP lop
|
|
RET
|