mirror of
https://github.com/hrydgard/ppsspp.git
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101 lines
4.3 KiB
C++
101 lines
4.3 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "zlib.h"
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#include "Common/CommonTypes.h"
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#include "Core/Debugger/MemBlockInfo.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/HLE/sceDeflt.h"
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#include "Core/MemMap.h"
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// All the decompress functions are identical with only differing window bits.
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static int CommonDecompress(int windowBits, u32 OutBuffer, int OutBufferLength, u32 InBuffer, u32 Crc32Addr) {
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if (!Memory::IsValidAddress(OutBuffer) || !Memory::IsValidAddress(InBuffer)) {
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return hleLogError(HLE, 0, "bad address");
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}
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auto crc32Addr = PSPPointer<u32_le>::Create(Crc32Addr);
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if (Crc32Addr && !crc32Addr.IsValid()) {
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return hleLogError(HLE, 0, "bad crc32 address");
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}
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z_stream stream{};
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u8 *outBufferPtr = Memory::GetPointerWrite(OutBuffer);
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stream.next_in = (Bytef*)Memory::GetPointer(InBuffer);
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// We don't know the available length, just let it use as much as it wants.
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stream.avail_in = (uInt)Memory::ValidSize(InBuffer, Memory::g_MemorySize);
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stream.next_out = outBufferPtr;
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stream.avail_out = (uInt)OutBufferLength;
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int err = inflateInit2(&stream, windowBits);
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if (err != Z_OK) {
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return hleLogError(HLE, 0, "inflateInit2 failed %08x", err);
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}
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err = inflate(&stream, Z_FINISH);
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inflateEnd(&stream);
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if (err != Z_STREAM_END) {
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return hleLogError(HLE, 0, "inflate failed %08x", err);
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}
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if (crc32Addr.IsValid()) {
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uLong crc = crc32(0L, Z_NULL, 0);
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*crc32Addr = crc32(crc, outBufferPtr, stream.total_out);
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}
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if (MemBlockInfoDetailed(stream.total_in, stream.total_out)) {
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char tagData[128];
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size_t tagSize = FormatMemWriteTagAt(tagData, sizeof(tagData), "sceDeflt/", InBuffer, stream.total_in);
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NotifyMemInfo(MemBlockFlags::READ, InBuffer, stream.total_in, tagData, tagSize);
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NotifyMemInfo(MemBlockFlags::WRITE, OutBuffer, stream.total_out, tagData, tagSize);
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}
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return hleLogSuccessI(HLE, stream.total_out);
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}
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static int sceDeflateDecompress(u32 OutBuffer, int OutBufferLength, u32 InBuffer, u32 Crc32Addr) {
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return CommonDecompress(-MAX_WBITS, OutBuffer, OutBufferLength, InBuffer, Crc32Addr);
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}
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static int sceGzipDecompress(u32 OutBuffer, int OutBufferLength, u32 InBuffer, u32 Crc32Addr) {
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return CommonDecompress(16 + MAX_WBITS, OutBuffer, OutBufferLength, InBuffer, Crc32Addr);
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}
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static int sceZlibDecompress(u32 OutBuffer, int OutBufferLength, u32 InBuffer, u32 Crc32Addr) {
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return CommonDecompress(MAX_WBITS, OutBuffer, OutBufferLength, InBuffer, Crc32Addr);
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}
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const HLEFunction sceDeflt[] = {
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{0X0BA3B9CC, nullptr, "sceGzipGetCompressedData", '?', "" },
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{0X106A3552, nullptr, "sceGzipGetName", '?', "" },
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{0X1B5B82BC, nullptr, "sceGzipIsValid", '?', "" },
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{0X2EE39A64, nullptr, "sceZlibAdler32", '?', "" },
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{0X44054E03, &WrapI_UIUU<sceDeflateDecompress>, "sceDeflateDecompress", 'i', "xixp"},
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{0X6A548477, nullptr, "sceZlibGetCompressedData", '?', "" },
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{0X6DBCF897, &WrapI_UIUU<sceGzipDecompress>, "sceGzipDecompress", 'i', "xixp"},
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{0X8AA82C92, nullptr, "sceGzipGetInfo", '?', "" },
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{0XA9E4FB28, &WrapI_UIUU<sceZlibDecompress>, "sceZlibDecompress", 'i', "xixp"},
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{0XAFE01FD3, nullptr, "sceZlibGetInfo", '?', "" },
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{0XB767F9A0, nullptr, "sceGzipGetComment", '?', "" },
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{0XE46EB986, nullptr, "sceZlibIsValid", '?', "" },
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};
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void Register_sceDeflt() {
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RegisterModule("sceDeflt", ARRAY_SIZE(sceDeflt), sceDeflt);
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}
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