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; VirtualDub - Video processing and capture application
; System library component
; Copyright (C) 1998-2004 Avery Lee, All Rights Reserved.
;
; Beginning with 1.6.0, the VirtualDub system library is licensed
; differently than the remainder of VirtualDub. This particular file is
; thus licensed as follows (the "zlib" license):
;
; This software is provided 'as-is', without any express or implied
; warranty. In no event will the authors be held liable for any
; damages arising from the use of this software.
;
; Permission is granted to anyone to use this software for any purpose,
; including commercial applications, and to alter it and redistribute it
; freely, subject to the following restrictions:
;
; 1. The origin of this software must not be misrepresented; you must
; not claim that you wrote the original software. If you use this
; software in a product, an acknowledgment in the product
; documentation would be appreciated but is not required.
; 2. Altered source versions must be plainly marked as such, and must
; not be misrepresented as being the original software.
; 3. This notice may not be removed or altered from any source
; distribution.
segment .text
global _VDFastMemcpyPartialScalarAligned8
_VDFastMemcpyPartialScalarAligned8:
mov eax, [esp+12]
mov edx, [esp+4]
mov ecx, [esp+8]
add ecx, eax
add edx, eax
neg eax
jz .nobytes
add eax, 8
jz .doodd
jmp short .xloop
align 16
.xloop:
fild qword [ecx+eax-8]
fild qword [ecx+eax]
fxch
fistp qword [edx+eax-8]
fistp qword [edx+eax]
add eax,16
jnc .xloop
jnz .nobytes
.doodd:
fild qword [ecx-8]
fistp qword [edx-8]
.nobytes:
ret
global _VDFastMemcpyPartialMMX
_VDFastMemcpyPartialMMX:
push edi
push esi
mov edi, [esp+4+8]
mov esi, [esp+8+8]
mov ecx, [esp+12+8]
mov edx, ecx
shr ecx, 2
and edx, 3
rep movsd
mov ecx, edx
rep movsb
pop esi
pop edi
ret
global _VDFastMemcpyPartialMMX2
_VDFastMemcpyPartialMMX2:
push ebp
push edi
push esi
push ebx
mov ebx, [esp+4+16]
mov edx, [esp+8+16]
mov eax, [esp+12+16]
neg eax
add eax, 63
jbe .skipblastloop
.blastloop:
movq mm0, [edx]
movq mm1, [edx+8]
movq mm2, [edx+16]
movq mm3, [edx+24]
movq mm4, [edx+32]
movq mm5, [edx+40]
movq mm6, [edx+48]
movq mm7, [edx+56]
movntq [ebx], mm0
movntq [ebx+8], mm1
movntq [ebx+16], mm2
movntq [ebx+24], mm3
movntq [ebx+32], mm4
movntq [ebx+40], mm5
movntq [ebx+48], mm6
movntq [ebx+56], mm7
add ebx, 64
add edx, 64
add eax, 64
jnc .blastloop
.skipblastloop:
sub eax, 63-7
jns .noextras
.quadloop:
movq mm0, [edx]
movntq [ebx], mm0
add edx, 8
add ebx, 8
add eax, 8
jnc .quadloop
.noextras:
sub eax, 7
jz .nooddballs
mov ecx, eax
neg ecx
mov esi, edx
mov edi, ebx
rep movsb
.nooddballs:
pop ebx
pop esi
pop edi
pop ebp
ret
global _VDFastMemcpyPartialSSE2
_VDFastMemcpyPartialSSE2:
push ebp
push edi
push esi
push ebx
mov edi, [esp+4+16]
mov esi, [esp+8+16]
mov ecx, [esp+12+16]
shr ecx, 7
cmp ecx, 0
jbe .skipblastloop
.blastloop:
prefetchnta [esi+16*8]
movaps xmm0, [esi]
movaps xmm1, [esi+16*1]
movaps xmm2, [esi+16*2]
movaps xmm3, [esi+16*3]
movaps xmm4, [esi+16*4]
movaps xmm5, [esi+16*5]
movaps xmm6, [esi+16*6]
movaps xmm7, [esi+16*7]
movntps [edi], xmm0
movntps [edi+16*1], xmm1
movntps [edi+16*2], xmm2
movntps [edi+16*3], xmm3
movntps [edi+16*4], xmm4
movntps [edi+16*5], xmm5
movntps [edi+16*6], xmm6
movntps [edi+16*7], xmm7
add esi, 128
add edi, 128
dec ecx
jne .blastloop
.skipblastloop:
mov ecx, [esp+12+16]
and ecx, 127
cmp ecx, 0
je .nooddballs
.loop:
mov dl, [esi]
mov [edi], dl
inc esi
inc edi
dec ecx
jne .loop
.nooddballs:
pop ebx
pop esi
pop edi
pop ebp
ret
end
|
