mirror of
https://github.com/moparisthebest/Simba
synced 2024-12-18 05:22:20 -05:00
57 lines
912 B
PHP
57 lines
912 B
PHP
{$ASMMODE intel}
|
|
|
|
{$define HAVE_DETRANSFORM}
|
|
{
|
|
procedure Tbzip2_decode_stream.detransform;
|
|
|
|
var a:cardinal;
|
|
p,q,r:Pcardinal;
|
|
|
|
begin
|
|
a:=0;
|
|
p:=@tt^[0];
|
|
q:=p+tt_count;
|
|
while p<>q do
|
|
begin
|
|
r:=@tt^[cftab[p^ and $ff]];
|
|
inc(cftab[p^ and $ff]);
|
|
r^:=r^ or a;
|
|
inc(a,256);
|
|
inc(p);
|
|
end;
|
|
end;
|
|
}
|
|
|
|
{const c:cardinal=0;
|
|
|
|
procedure mcount;external name 'mcount';}
|
|
|
|
|
|
procedure Tbzip2_decode_stream.detransform;assembler;
|
|
|
|
asm
|
|
{ mov edx,offset c
|
|
call mcount}
|
|
xor edx,edx
|
|
lea ebx,[esi+Tbzip2_decode_stream.cftab]
|
|
mov ecx,[esi+Tbzip2_decode_stream.tt_count]
|
|
push esi
|
|
push ebp
|
|
mov esi,[esi+Tbzip2_decode_stream.tt]
|
|
mov edi,esi
|
|
lea ebp,[4*ecx+esi]
|
|
jmp @a2
|
|
@a1:
|
|
movzx eax,byte [esi]
|
|
mov ecx,[ebx+4*eax]
|
|
inc dword [ebx+4*eax]
|
|
or [edi+4*ecx],edx
|
|
add edx,$100
|
|
add esi,4
|
|
@a2:
|
|
cmp esi,ebp
|
|
jne @a1
|
|
pop ebp
|
|
pop esi
|
|
end ['eax','ebx','ecx','edx','edi'];
|