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Make seek mode 2 (offset from end of file) make sense. I doubt any games use this.

This commit is contained in:
Jordan Woyak 2013-02-20 15:15:04 -06:00
parent 0efe6c2124
commit 04a33b177a
1 changed files with 26 additions and 37 deletions
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63
Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_FileIO.cpp
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@ -165,7 +165,7 @@ File::IOFile CWII_IPC_HLE_Device_FileIO::OpenFile()
bool CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
{
u32 ReturnValue = FS_RESULT_FATAL;
const u32 SeekPosition = Memory::Read_U32(_CommandAddress + 0xC);
const u32 SeekOffset = Memory::Read_U32(_CommandAddress + 0xC);
const u32 Mode = Memory::Read_U32(_CommandAddress + 0x10);
if (auto file = OpenFile())
@ -173,48 +173,37 @@ bool CWII_IPC_HLE_Device_FileIO::Seek(u32 _CommandAddress)
ReturnValue = FS_RESULT_FATAL;
const u64 fileSize = file.GetSize();
INFO_LOG(WII_IPC_FILEIO, "FileIO: Seek Pos: 0x%08x, Mode: %i (%s, Length=0x%08llx)", SeekPosition, Mode, m_Name.c_str(), fileSize);
INFO_LOG(WII_IPC_FILEIO, "FileIO: Seek Pos: 0x%08x, Mode: %i (%s, Length=0x%08llx)", SeekOffset, Mode, m_Name.c_str(), fileSize);
u64 wantedPos = 0;
switch (Mode)
{
case 0:
{
if (SeekPosition <= fileSize)
{
m_SeekPos = SeekPosition;
ReturnValue = m_SeekPos;
}
break;
}
case 1:
{
u32 wantedPos = SeekPosition+m_SeekPos;
if (wantedPos <= fileSize)
{
m_SeekPos = wantedPos;
ReturnValue = m_SeekPos;
}
break;
}
case 2:
{
u64 wantedPos = fileSize+m_SeekPos;
if (wantedPos <= fileSize)
{
m_SeekPos = wantedPos;
ReturnValue = m_SeekPos;
}
break;
}
default:
{
PanicAlert("CWII_IPC_HLE_Device_FileIO Unsupported seek mode %i", Mode);
ReturnValue = FS_RESULT_FATAL;
break;
}
case 0:
wantedPos = SeekOffset;
break;
case 1:
wantedPos = m_SeekPos + SeekOffset;
break;
case 2:
wantedPos = fileSize + (s32)SeekOffset;
break;
default:
PanicAlert("CWII_IPC_HLE_Device_FileIO Unsupported seek mode %i", Mode);
ReturnValue = FS_RESULT_FATAL;
break;
}
if (wantedPos <= fileSize)
{
m_SeekPos = wantedPos;
ReturnValue = m_SeekPos;
}
}
else
{
// TODO: This can't be right.
ReturnValue = FS_FILE_NOT_EXIST;
}
Memory::Write_U32(ReturnValue, _CommandAddress + 0x4);