mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-09-20 01:11:32 +00:00
312 lines
7.0 KiB
NASM
312 lines
7.0 KiB
NASM
.code
|
|
|
|
memcpySSE proc
|
|
; dst = rcx
|
|
; src = rdx
|
|
; len = r8
|
|
|
|
test r8 , r8
|
|
jne OK
|
|
ret
|
|
|
|
OK:
|
|
; void * end = dst + (length & ~0x100);
|
|
; end = r10
|
|
mov r9 , r8
|
|
and r9 , -0100h
|
|
mov r10, rcx
|
|
add r10, r9
|
|
|
|
; size_t rem = (length & 0xFF) >> 4);
|
|
; rem = r11
|
|
mov r11, r8
|
|
and r11, 0FFh
|
|
shr r11, 4
|
|
|
|
sub rsp, 8 + 10*16 + 4*8
|
|
movdqa oword ptr [rsp + 4*8 + 00 ], xmm6
|
|
movdqa oword ptr [rsp + 4*8 + 16 ], xmm7
|
|
movdqa oword ptr [rsp + 4*8 + 32 ], xmm8
|
|
movdqa oword ptr [rsp + 4*8 + 48 ], xmm9
|
|
movdqa oword ptr [rsp + 4*8 + 64 ], xmm10
|
|
movdqa oword ptr [rsp + 4*8 + 80 ], xmm11
|
|
movdqa oword ptr [rsp + 4*8 + 96 ], xmm12
|
|
movdqa oword ptr [rsp + 4*8 + 112], xmm13
|
|
movdqa oword ptr [rsp + 4*8 + 128], xmm14
|
|
movdqa oword ptr [rsp + 4*8 + 144], xmm15
|
|
|
|
cmp rcx, r10
|
|
je RemainingBlocks
|
|
|
|
FullLoop:
|
|
vmovaps xmm0 , xmmword ptr [rdx + 000h]
|
|
vmovaps xmm1 , xmmword ptr [rdx + 010h]
|
|
vmovaps xmm2 , xmmword ptr [rdx + 020h]
|
|
vmovaps xmm3 , xmmword ptr [rdx + 030h]
|
|
vmovaps xmm4 , xmmword ptr [rdx + 040h]
|
|
vmovaps xmm5 , xmmword ptr [rdx + 050h]
|
|
vmovaps xmm6 , xmmword ptr [rdx + 060h]
|
|
vmovaps xmm7 , xmmword ptr [rdx + 070h]
|
|
vmovaps xmm8 , xmmword ptr [rdx + 080h]
|
|
vmovaps xmm9 , xmmword ptr [rdx + 090h]
|
|
vmovaps xmm10, xmmword ptr [rdx + 0A0h]
|
|
vmovaps xmm11, xmmword ptr [rdx + 0B0h]
|
|
vmovaps xmm12, xmmword ptr [rdx + 0C0h]
|
|
vmovaps xmm13, xmmword ptr [rdx + 0D0h]
|
|
vmovaps xmm14, xmmword ptr [rdx + 0E0h]
|
|
vmovaps xmm15, xmmword ptr [rdx + 0F0h]
|
|
vmovntdq xmmword ptr [rcx + 000h], xmm0
|
|
vmovntdq xmmword ptr [rcx + 010h], xmm1
|
|
vmovntdq xmmword ptr [rcx + 020h], xmm2
|
|
vmovntdq xmmword ptr [rcx + 030h], xmm3
|
|
vmovntdq xmmword ptr [rcx + 040h], xmm4
|
|
vmovntdq xmmword ptr [rcx + 050h], xmm5
|
|
vmovntdq xmmword ptr [rcx + 060h], xmm6
|
|
vmovntdq xmmword ptr [rcx + 070h], xmm7
|
|
vmovntdq xmmword ptr [rcx + 080h], xmm8
|
|
vmovntdq xmmword ptr [rcx + 090h], xmm9
|
|
vmovntdq xmmword ptr [rcx + 0A0h], xmm10
|
|
vmovntdq xmmword ptr [rcx + 0B0h], xmm11
|
|
vmovntdq xmmword ptr [rcx + 0C0h], xmm12
|
|
vmovntdq xmmword ptr [rcx + 0D0h], xmm13
|
|
vmovntdq xmmword ptr [rcx + 0E0h], xmm14
|
|
vmovntdq xmmword ptr [rcx + 0F0h], xmm15
|
|
add rdx, 0100h
|
|
add rcx, 0100h
|
|
cmp rcx, r10
|
|
jne FullLoop
|
|
|
|
RemainingBlocks:
|
|
lea r9 , JumpTable
|
|
mov r10, 15
|
|
sub r10, r11
|
|
imul r10, 5
|
|
add r9 , r10
|
|
jmp r9
|
|
|
|
JumpTable:
|
|
jmp Block15
|
|
jmp Block14
|
|
jmp Block13
|
|
jmp Block12
|
|
jmp Block11
|
|
jmp Block10
|
|
jmp Block9
|
|
jmp Block8
|
|
jmp Block7
|
|
jmp Block6
|
|
jmp Block5
|
|
jmp Block4
|
|
jmp Block3
|
|
jmp Block2
|
|
jmp Block1
|
|
jmp Block0
|
|
|
|
; ensure we generate near jumps
|
|
padding1 db 127 dup(090h)
|
|
|
|
Block15:
|
|
vmovaps xmm14, xmmword ptr [rdx + 0E0h]
|
|
vmovntdq xmmword ptr [rcx + 0E0h], xmm14
|
|
Block14:
|
|
vmovaps xmm13, xmmword ptr [rdx + 0D0h]
|
|
vmovntdq xmmword ptr [rcx + 0D0h], xmm13
|
|
Block13:
|
|
vmovaps xmm12, xmmword ptr [rdx + 0C0h]
|
|
vmovntdq xmmword ptr [rcx + 0C0h], xmm12
|
|
Block12:
|
|
vmovaps xmm11, xmmword ptr [rdx + 0B0h]
|
|
vmovntdq xmmword ptr [rcx + 0B0h], xmm11
|
|
Block11:
|
|
vmovaps xmm10, xmmword ptr [rdx + 0A0h]
|
|
vmovntdq xmmword ptr [rcx + 0A0h], xmm10
|
|
Block10:
|
|
vmovaps xmm9 , xmmword ptr [rdx + 090h]
|
|
vmovntdq xmmword ptr [rcx + 090h], xmm9
|
|
Block9:
|
|
vmovaps xmm8 , xmmword ptr [rdx + 080h]
|
|
vmovntdq xmmword ptr [rcx + 080h], xmm8
|
|
Block8:
|
|
vmovaps xmm7 , xmmword ptr [rdx + 070h]
|
|
vmovntdq xmmword ptr [rcx + 070h], xmm7
|
|
Block7:
|
|
vmovaps xmm6 , xmmword ptr [rdx + 060h]
|
|
vmovntdq xmmword ptr [rcx + 060h], xmm6
|
|
Block6:
|
|
vmovaps xmm5 , xmmword ptr [rdx + 050h]
|
|
vmovntdq xmmword ptr [rcx + 050h], xmm5
|
|
Block5:
|
|
vmovaps xmm4 , xmmword ptr [rdx + 040h]
|
|
vmovntdq xmmword ptr [rcx + 040h], xmm4
|
|
Block4:
|
|
vmovaps xmm3 , xmmword ptr [rdx + 030h]
|
|
vmovntdq xmmword ptr [rcx + 030h], xmm3
|
|
Block3:
|
|
vmovaps xmm2 , xmmword ptr [rdx + 020h]
|
|
vmovntdq xmmword ptr [rcx + 020h], xmm2
|
|
Block2:
|
|
vmovaps xmm1 , xmmword ptr [rdx + 010h]
|
|
vmovntdq xmmword ptr [rcx + 010h], xmm1
|
|
Block1:
|
|
vmovaps xmm0 , xmmword ptr [rdx + 000h]
|
|
vmovntdq xmmword ptr [rcx + 000h], xmm0
|
|
|
|
imul r11, 16
|
|
add rdx, r11
|
|
add rcx, r11
|
|
|
|
Block0:
|
|
movdqa xmm6 , oword ptr [rsp + 4*8 + 00 ]
|
|
movdqa xmm7 , oword ptr [rsp + 4*8 + 16 ]
|
|
movdqa xmm8 , oword ptr [rsp + 4*8 + 32 ]
|
|
movdqa xmm9 , oword ptr [rsp + 4*8 + 48 ]
|
|
movdqa xmm10, oword ptr [rsp + 4*8 + 64 ]
|
|
movdqa xmm11, oword ptr [rsp + 4*8 + 80 ]
|
|
movdqa xmm12, oword ptr [rsp + 4*8 + 96 ]
|
|
movdqa xmm13, oword ptr [rsp + 4*8 + 112]
|
|
movdqa xmm14, oword ptr [rsp + 4*8 + 128]
|
|
movdqa xmm15, oword ptr [rsp + 4*8 + 144]
|
|
add rsp, 8 + 10*16 + 4*8
|
|
|
|
and r8, 0Fh
|
|
imul r8, 5
|
|
lea r9, CopyTable
|
|
add r9, r8
|
|
jmp r9
|
|
|
|
CopyTable:
|
|
ret
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
|
|
jmp Copy1
|
|
jmp Copy2
|
|
jmp Copy3
|
|
jmp Copy4
|
|
jmp Copy5
|
|
jmp Copy6
|
|
jmp Copy7
|
|
jmp Copy8
|
|
jmp Copy9
|
|
jmp Copy10
|
|
jmp Copy11
|
|
jmp Copy12
|
|
jmp Copy13
|
|
jmp Copy14
|
|
|
|
; copy 15
|
|
mov r8 , qword ptr [rdx + 00h]
|
|
mov r9d , dword ptr [rdx + 08h]
|
|
mov r10w, word ptr [rdx + 0Ch]
|
|
mov al , byte ptr [rdx + 0Eh]
|
|
mov qword ptr [rcx + 00h], r8
|
|
mov dword ptr [rcx + 08h], r9d
|
|
mov word ptr [rcx + 0Ch], r10w
|
|
mov byte ptr [rcx + 0Eh], al
|
|
ret
|
|
|
|
; ensure we generate near jumps
|
|
padding2 db 127 dup(090h)
|
|
|
|
Copy1:
|
|
mov al, byte ptr [rdx]
|
|
mov byte ptr [rcx], al
|
|
ret
|
|
|
|
Copy2:
|
|
mov r10w, word ptr [rdx]
|
|
mov word ptr [rcx], r10w
|
|
ret
|
|
|
|
Copy3:
|
|
mov r10w, word ptr [rdx]
|
|
mov word ptr [rcx], r10w
|
|
mov al, byte ptr [rdx + 02h]
|
|
mov byte ptr [rcx + 02h], al
|
|
ret
|
|
|
|
Copy4:
|
|
mov r9d , dword ptr [rdx]
|
|
mov dword ptr [rcx], r9d
|
|
ret
|
|
|
|
Copy5:
|
|
mov r9d , dword ptr [rdx]
|
|
mov dword ptr [rcx], r9d
|
|
mov al, byte ptr [rdx + 04h]
|
|
mov byte ptr [rcx + 04h], al
|
|
ret
|
|
|
|
Copy6:
|
|
mov r9d , dword ptr [rdx]
|
|
mov dword ptr [rcx], r9d
|
|
mov r10w, word ptr [rdx + 04h]
|
|
mov word ptr [rcx + 04h], r10w
|
|
ret
|
|
|
|
Copy7:
|
|
mov r9d , dword ptr [rdx]
|
|
mov dword ptr [rcx], r9d
|
|
mov r10w, word ptr [rdx + 04h]
|
|
mov word ptr [rcx + 04h], r10w
|
|
mov al, byte ptr [rdx + 06h]
|
|
mov byte ptr [rcx + 06h], al
|
|
ret
|
|
|
|
Copy8:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
ret
|
|
|
|
Copy9:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
mov al, byte ptr [rdx + 08h]
|
|
mov byte ptr [rcx + 08h], al
|
|
ret
|
|
|
|
Copy10:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
mov r10w, word ptr [rdx + 08h]
|
|
mov word ptr [rcx + 08h], r10w
|
|
ret
|
|
|
|
Copy11:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
mov r10w, word ptr [rdx + 08h]
|
|
mov word ptr [rcx + 08h], r10w
|
|
mov al, byte ptr [rdx + 0Ah]
|
|
mov byte ptr [rcx + 0Ah], al
|
|
ret
|
|
|
|
Copy12:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
mov r9d , dword ptr [rdx + 08h]
|
|
mov dword ptr [rcx + 08h], r9d
|
|
ret
|
|
|
|
Copy13:
|
|
mov r8, qword ptr [rdx]
|
|
mov qword ptr [rcx], r8
|
|
mov r9d , dword ptr [rdx + 08h]
|
|
mov dword ptr [rcx + 08h], r9d
|
|
mov al, byte ptr [rdx + 0Ch]
|
|
mov byte ptr [rcx + 0Ch], al
|
|
ret
|
|
|
|
Copy14:
|
|
mov r8 , qword ptr [rdx ]
|
|
mov r9d , dword ptr [rdx + 08h]
|
|
mov r10w, word ptr [rdx + 0Ch]
|
|
mov qword ptr [rcx ], r8
|
|
mov dword ptr [rcx + 08h], r9d
|
|
mov word ptr [rcx + 0Ch], r10w
|
|
ret
|
|
|
|
memcpySSE endp
|
|
end |