mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-11-17 18:06:15 -05:00
48 lines
696 B
ArmAsm
48 lines
696 B
ArmAsm
#include "textflag.h"
|
|
|
|
// func xorfwd(x []byte)
|
|
TEXT ·xorfwd(SB),NOSPLIT,$0
|
|
MOVQ x+0(FP), SI // x[i]
|
|
MOVL x+8(FP), CX // x.len
|
|
MOVQ x+0(FP), DI
|
|
ADDQ $4, DI // x[i+4]
|
|
SUBQ $4, CX
|
|
loop:
|
|
MOVL (SI), AX
|
|
XORL AX, (DI)
|
|
ADDQ $4, SI
|
|
ADDQ $4, DI
|
|
SUBQ $4, CX
|
|
|
|
CMPL CX, $0
|
|
JE done
|
|
|
|
JMP loop
|
|
done:
|
|
RET
|
|
|
|
// func xorbkd(x []byte)
|
|
TEXT ·xorbkd(SB),NOSPLIT,$0
|
|
MOVQ x+0(FP), SI
|
|
MOVL x+8(FP), CX // x.len
|
|
MOVQ x+0(FP), DI
|
|
ADDQ CX, SI // x[-8]
|
|
SUBQ $8, SI
|
|
ADDQ CX, DI // x[-4]
|
|
SUBQ $4, DI
|
|
SUBQ $4, CX
|
|
loop:
|
|
MOVL (SI), AX
|
|
XORL AX, (DI)
|
|
SUBQ $4, SI
|
|
SUBQ $4, DI
|
|
SUBQ $4, CX
|
|
|
|
CMPL CX, $0
|
|
JE done
|
|
|
|
JMP loop
|
|
|
|
done:
|
|
RET
|