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* Create a branch for USB experiments.

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svn path=/branches/usb-experiments/; revision=72629
This commit is contained in:
Amine Khaldi 2016-09-09 15:11:19 +00:00
parent 28d8ba0d3e
commit 0ee830d7a4
23049 changed files with 0 additions and 1313991 deletions
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154
win32ss/gdi/dib/i386/dib24bpp_hline.s Normal file
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/*
* PROJECT: Win32 subsystem
* LICENSE: See COPYING in the top level directory
* FILE: win32ss/gdi/dib/i386/dib24bpp_hline.s
* PURPOSE: ASM optimised 24bpp HLine
* PROGRAMMERS: Magnus Olsen
*/
#include <asm.inc>
.code
PUBLIC _DIB_24BPP_HLine
_DIB_24BPP_HLine:
push edi
push esi
push ebx
sub esp, 24
mov ebx, [esp+40]
mov edi, [esp+52]
mov ecx, [esp+44]
mov eax, [ebx+36]
mov esi, [ebx+32]
mov edx, [esp+48]
imul eax, edi
sub edx, ecx
mov [esp], edx
add eax, esi
lea eax, [eax+ecx*2]
add eax, ecx
cmp edx, 7
mov esi, edx
mov [esp+4], eax
ja Align4byte
lea eax, [edx-1]
mov [esp], eax
inc eax
jnz small_fill
add esp, 24
pop ebx
pop esi
pop edi
ret
/* For small fills, don't bother doing anything fancy */
small_fill:
movzx ecx, word ptr [esp+58]
mov edx, [esp+4]
mov esi, [esp+56]
lea eax, [edx+2]
mov [esp+4], eax
mov [edx+2], cl
mov eax, [esp]
inc dword ptr [esp+4]
mov [edx], si
dec eax
mov [esp], eax
inc eax
jnz small_fill
add esp, 24
pop ebx
pop esi
pop edi
ret
Align4byte:
/* Align to 4-byte address */
test al, 3
mov ecx, eax
jz loop1
lea esi, [esi+0]
lea edi, [edi+0]
loopasmversion:
/* This is about 30% faster than the generic C code below */
movzx edx, word ptr [esp+58]
lea edi, [ecx+2]
mov eax, [esp+56]
mov [esp+4], edi
mov [ecx+2], dl
mov ebx, [esp+4]
mov [ecx], ax
mov edx, [esp]
inc ebx
mov [esp+4], ebx
dec edx
test bl, 3
mov [esp], edx
mov ecx, ebx
jnz loopasmversion
mov esi, edx
loop1:
mov ecx, [esp+56]
and ecx, 16777215
mov ebx, ecx
shr ebx, 8
mov eax, ecx
shl eax, 16
or ebx, eax
mov edx, ecx
shl edx, 8
mov eax, ecx
shr eax, 16
or edx, eax
mov eax, ecx
shl eax, 24
or eax, ecx
mov ecx, [esp]
shr ecx, 2
mov edi, [esp+4]
loop2:
mov [edi], eax
mov [edi+4], ebx
mov [edi+8], edx
add edi, 12
dec ecx
jnz loop2
mov [esp+4], edi
and esi, 3
lea eax, [esi-1]
mov [esp], eax
inc eax
jnz leftoverfromthemainloop
add esp, 24
pop ebx
pop esi
pop edi
ret
leftoverfromthemainloop:
/* Count = Count & 0x03; */
mov ecx, [esp+4]
mov ebx, [esp+56]
lea esi, [ecx+2]
mov [ecx], bx
shr ebx, 16
mov [esp+4], esi
mov [ecx+2], bl
mov eax, [esp]
inc dword ptr [esp+4]
dec eax
mov [esp], eax
inc eax
jnz leftoverfromthemainloop
add esp, 24
pop ebx
pop esi
pop edi
ret
END