mirror of
https://github.com/mangosfour/server.git
synced 2025-12-12 10:37:03 +00:00
387 lines
14 KiB
NASM
387 lines
14 KiB
NASM
.686P
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.MODEL FLAT
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ASSUME FS: NOTHING
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.CODE
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extrn _memset:PROC
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;
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; int starcraft_compress_sparse(char * pbOutBuffer, int * pcbOutLength, char * pbInBuffer, int cbInBuffer);
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;
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_starcraft_compress_sparse PROC
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var_C = dword ptr -0Ch
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var_8 = dword ptr -8
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pbOutBufferEnd = dword ptr -4
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pbOutBuffer = dword ptr 8
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pcbOutBuffer = dword ptr 0Ch
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pbInBuffer = dword ptr 10h
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cbInBuffer = dword ptr 14h
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push ebp
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mov ebp, esp
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sub esp, 0Ch
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mov eax, [ebp+pcbOutBuffer]
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mov eax, [eax]
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mov edx, [ebp+pbOutBuffer]
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add eax, edx
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mov [ebp+pbOutBufferEnd], eax
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mov eax, [ebp+cbInBuffer]
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push edi
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mov edi, [ebp+pbInBuffer]
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add edx, 4
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cmp edx, [ebp+pbOutBufferEnd]
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lea ecx, [edi+eax]
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mov [ebp+var_C], ecx
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jnb loc_466A24
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push ebx
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push esi
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mov esi, [ebp+pbOutBuffer]
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mov edx, eax
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shr edx, 18h
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mov [esi], dl
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inc esi
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mov edx, eax
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shr edx, 10h
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mov [esi], dl
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inc esi
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mov edx, eax
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shr edx, 8
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mov [esi], dl
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inc esi
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mov [esi], al
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lea eax, [ecx-3]
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inc esi
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cmp edi, eax
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jnb loc_4669FC
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mov ebx, 80h
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loc_466885: ; CODE XREF: Compress_sparse+1CDj
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and [ebp+pbInBuffer], 0
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cmp edi, ecx
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mov eax, edi
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mov [ebp+cbInBuffer], edi
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jnb short loc_4668B5
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loc_466892: ; CODE XREF: Compress_sparse+8Aj
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mov edx, [ebp+cbInBuffer]
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cmp byte ptr [edx], 0
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jnz short loc_46689F
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inc [ebp+pbInBuffer]
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jmp short loc_4668AD
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; ---------------------------------------------------------------------------
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loc_46689F: ; CODE XREF: Compress_sparse+6Fj
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cmp [ebp+pbInBuffer], 3
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jnb short loc_4668B5
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mov eax, [ebp+cbInBuffer]
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inc eax
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and [ebp+pbInBuffer], 0
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loc_4668AD: ; CODE XREF: Compress_sparse+74j
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inc [ebp+cbInBuffer]
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cmp [ebp+cbInBuffer], ecx
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jb short loc_466892
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loc_4668B5: ; CODE XREF: Compress_sparse+67j
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; Compress_sparse+7Aj
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sub eax, edi
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mov [ebp+cbInBuffer], eax
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jz loc_466984
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cmp eax, 81h
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jbe short loc_466901
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lea eax, [esi+81h]
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jmp short loc_4668D2
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; ---------------------------------------------------------------------------
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loc_4668CF: ; CODE XREF: Compress_sparse+D6j
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mov eax, [ebp+var_8]
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loc_4668D2: ; CODE XREF: Compress_sparse+A4j
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cmp eax, [ebp+pbOutBufferEnd]
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jnb loc_466A22
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push ebx
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mov byte ptr [esi], 0FFh
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inc esi
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inc eax
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push edi
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push esi
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mov [ebp+var_8], eax
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call _memset ; Microsoft VisualC 2-8/net runtime
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sub [ebp+cbInBuffer], ebx
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add [ebp+var_8], ebx
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add esp, 0Ch
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add esi, ebx
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add edi, ebx
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cmp [ebp+cbInBuffer], 81h
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ja short loc_4668CF
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loc_466901: ; CODE XREF: Compress_sparse+9Cj
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cmp [ebp+cbInBuffer], ebx
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jbe short loc_466926
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lea eax, [esi+2]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb loc_466A22
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push 1
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mov [esi], bl
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inc esi
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push edi
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push esi
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call _memset ; Microsoft VisualC 2-8/net runtime
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add esp, 0Ch
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inc esi
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inc edi
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dec [ebp+cbInBuffer]
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loc_466926: ; CODE XREF: Compress_sparse+DBj
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mov eax, [ebp+cbInBuffer]
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cmp eax, 1
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jb short loc_466957
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lea ecx, [eax+esi+1]
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cmp ecx, [ebp+pbOutBufferEnd]
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jnb loc_466A22
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mov cl, al
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dec cl
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or cl, bl
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push eax
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mov [esi], cl
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inc esi
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push edi
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push esi
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call _memset ; Microsoft VisualC 2-8/net runtime
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add esi, [ebp+cbInBuffer]
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add esp, 0Ch
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add edi, [ebp+cbInBuffer]
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jmp short loc_466981
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; ---------------------------------------------------------------------------
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loc_466957: ; CODE XREF: Compress_sparse+103j
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lea eax, [esi+2]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb loc_466A22
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push 1
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mov [esi], bl
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inc esi
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push edi
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push esi
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call _memset ; Microsoft VisualC 2-8/net runtime
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mov eax, [ebp+pbInBuffer]
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mov ecx, [ebp+cbInBuffer]
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add esp, 0Ch
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lea eax, [eax+ecx-1]
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inc esi
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inc edi
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mov [ebp+pbInBuffer], eax
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loc_466981: ; CODE XREF: Compress_sparse+12Cj
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mov ecx, [ebp+var_C]
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loc_466984: ; CODE XREF: Compress_sparse+91j
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cmp [ebp+pbInBuffer], 85h
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jbe short loc_4669B9
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lea eax, [esi+1]
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mov [ebp+cbInBuffer], eax
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loc_466993: ; CODE XREF: Compress_sparse+18Ej
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mov eax, [ebp+cbInBuffer]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb loc_466A22
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mov eax, 82h
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sub [ebp+pbInBuffer], eax
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mov byte ptr [esi], 7Fh
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inc esi
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inc [ebp+cbInBuffer]
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add edi, eax
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cmp [ebp+pbInBuffer], 85h
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ja short loc_466993
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loc_4669B9: ; CODE XREF: Compress_sparse+162j
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cmp [ebp+pbInBuffer], 82h
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jbe short loc_4669D6
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lea eax, [esi+1]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb short loc_466A22
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mov byte ptr [esi], 0
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add edi, 3
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sub [ebp+pbInBuffer], 3
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mov esi, eax
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loc_4669D6: ; CODE XREF: Compress_sparse+197j
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cmp [ebp+pbInBuffer], 3
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jb short loc_4669F1
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lea eax, [esi+1]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb short loc_466A22
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mov dl, byte ptr [ebp+pbInBuffer]
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sub dl, 3
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add edi, [ebp+pbInBuffer]
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mov [esi], dl
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mov esi, eax
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loc_4669F1: ; CODE XREF: Compress_sparse+1B1j
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lea eax, [ecx-3]
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cmp edi, eax
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jb loc_466885
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loc_4669FC: ; CODE XREF: Compress_sparse+51j
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cmp edi, ecx
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jnb short loc_466A1A
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mov eax, edi
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loc_466A02: ; CODE XREF: Compress_sparse+1E2j
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mov dl, [eax]
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inc eax
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test dl, dl
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jnz short loc_466A27
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cmp eax, ecx
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jb short loc_466A02
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lea eax, [esi+1]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb short loc_466A22
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mov byte ptr [esi], 7Fh
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mov esi, eax
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loc_466A1A: ; CODE XREF: Compress_sparse+1D5j
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; Compress_sparse+21Cj
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sub esi, [ebp+pbOutBuffer]
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mov eax, [ebp+pcbOutBuffer]
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mov [eax], esi
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loc_466A22: ; CODE XREF: Compress_sparse+ACj
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; Compress_sparse+E3j ...
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pop esi
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pop ebx
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loc_466A24: ; CODE XREF: Compress_sparse+26j
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pop edi
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leave
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retn
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; ---------------------------------------------------------------------------
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loc_466A27: ; CODE XREF: Compress_sparse+1DEj
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sub ecx, edi
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mov ebx, ecx
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lea eax, [ebx+esi+1]
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cmp eax, [ebp+pbOutBufferEnd]
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jnb short loc_466A22
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push ebx
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mov byte ptr [esi], 0FFh
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inc esi
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push edi
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push esi
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call _memset ; Microsoft VisualC 2-8/net runtime
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add esp, 0Ch
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add esi, ebx
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jmp short loc_466A1A
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_starcraft_compress_sparse ENDP
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;
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; int starcraft_decompress_sparse(char * pbOutBuffer, int * pcbOutLength, char * pbInBuffer, int cbInBuffer);
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;
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_starcraft_decompress_sparse PROC
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pbInBufferEnd = dword ptr -4
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pbOutBuffer = dword ptr 8
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pcbOutBuffer = dword ptr 0Ch
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pbInBuffer = dword ptr 10h
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cbInBuffer = dword ptr 14h
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push ebp
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mov ebp, esp
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push ecx
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mov eax, [ebp+pbOutBuffer]
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push esi
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mov esi, [ebp+pbInBuffer] ; ESI - pbInBuffer
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mov [ebp+pbOutBuffer], eax
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mov eax, [ebp+cbInBuffer]
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cmp eax, 5
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lea ecx, [esi+eax]
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mov [ebp+pbInBufferEnd], ecx
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jnb short loc_466A6A
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xor al, al
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jmp loc_466AF5
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; ---------------------------------------------------------------------------
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loc_466A6A: ; CODE XREF: Decompress_sparse+1Aj
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push edi
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movzx edi, byte ptr [esi]
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shl edi, 18h
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inc esi
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movzx eax, byte ptr [esi]
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shl eax, 10h
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or edi, eax
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xor eax, eax
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inc esi
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mov ah, [esi]
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or edi, eax
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inc esi
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movzx eax, byte ptr [esi]
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or edi, eax
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mov eax, [ebp+pcbOutBuffer]
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inc esi
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cmp esi, ecx
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mov [ebp+pbInBuffer], edi ; EDI = cbOutBuffer
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mov [eax], edi
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jnb short loc_466AF2
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push ebx
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loc_466A95: ; CODE XREF: Decompress_sparse+A8j
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movzx eax, byte ptr [esi]
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inc esi
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test al, al
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jns short loc_466AC1
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and eax, 7Fh
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inc eax ; AL = (*pbInBuffer & 0x7F) + 1
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mov [ebp+cbInBuffer], eax
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cmp eax, edi ; AL < cbOutBuffer ?
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lea eax, [ebp+cbInBuffer]
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jb short loc_466AAE
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lea eax, [ebp+pbInBuffer]
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loc_466AAE: ; CODE XREF: Decompress_sparse+62j
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mov ebx, [eax]
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push ebx
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push esi
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push [ebp+pbOutBuffer]
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call _memset ; Microsoft VisualC 2-8/net runtime
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add esp, 0Ch
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add esi, ebx
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jmp short loc_466AE4
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; ---------------------------------------------------------------------------
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loc_466AC1: ; CODE XREF: Decompress_sparse+54j
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and eax, 7Fh
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add eax, 3
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mov [ebp+cbInBuffer], eax
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cmp eax, edi
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lea eax, [ebp+cbInBuffer]
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jb short loc_466AD4
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lea eax, [ebp+pbInBuffer]
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loc_466AD4: ; CODE XREF: Decompress_sparse+88j
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mov ebx, [eax]
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push ebx ; Size
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push 0 ; Val
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push [ebp+pbOutBuffer] ; Dst
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call _memset
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add esp, 0Ch
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loc_466AE4: ; CODE XREF: Decompress_sparse+78j
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add [ebp+pbOutBuffer], ebx
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sub edi, ebx
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cmp esi, [ebp+pbInBufferEnd]
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mov [ebp+pbInBuffer], edi
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jb short loc_466A95
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pop ebx
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loc_466AF2: ; CODE XREF: Decompress_sparse+4Bj
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mov al, 1
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pop edi
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loc_466AF5: ; CODE XREF: Decompress_sparse+1Ej
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pop esi
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leave
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retn
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_starcraft_decompress_sparse ENDP
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END
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