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Use correct mask for Fake VMem 

Shouldn't have any behaviour change for regular usage as both masks are 32MB
by default.
But fixes theoretical buffer overrun when memory size override is used.
This commit is contained in:
Scott Mansell 2021-05-23 05:46:25 +12:00
parent 77e5d79354
commit 610613ee76
1 changed files with 3 additions and 2 deletions
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5
Source/Core/Core/PowerPC/MMU.cpp
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@ -239,7 +239,7 @@ static T ReadFromHardware(u32 em_address)
if (Memory::m_pFakeVMEM && ((em_address & 0xFE000000) == 0x7E000000))
{
T value;
std::memcpy(&value, &Memory::m_pFakeVMEM[em_address & Memory::GetRamMask()], sizeof(T));
std::memcpy(&value, &Memory::m_pFakeVMEM[em_address & Memory::GetFakeVMemMask()], sizeof(T));
return bswap(value);
}
@ -330,7 +330,8 @@ static void WriteToHardware(u32 em_address, const T data)
if (Memory::m_pFakeVMEM && ((em_address & 0xFE000000) == 0x7E000000))
{
const T swapped_data = bswap(data);
std::memcpy(&Memory::m_pFakeVMEM[em_address & Memory::GetRamMask()], &swapped_data, sizeof(T));
std::memcpy(&Memory::m_pFakeVMEM[em_address & Memory::GetFakeVMemMask()], &swapped_data,
sizeof(T));
return;
}