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CModule::GetVirtualMethodTable optimization

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This commit is contained in:
PixieCore 2022-07-24 15:09:45 +02:00
parent 65cbdb5465
commit ef28df4aa1
1 changed files with 5 additions and 9 deletions
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14
r5dev/public/module.cpp
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@ -264,7 +264,6 @@ CMemory CModule::GetVirtualMethodTable(const std::string& tableName)
if (!rttiTypeDescriptor)
return CMemory();
vector <CMemory> rttiTDRef = {};
uintptr_t scanStart = m_ReadOnlyData.m_pSectionBase; // Get the start address of our scan.
const uintptr_t scanEnd = (m_ReadOnlyData.m_pSectionBase + m_ReadOnlyData.m_nSectionSize) - 0x4; // Calculate the end of our scan.
@ -274,16 +273,13 @@ CMemory CModule::GetVirtualMethodTable(const std::string& tableName)
CMemory reference = FindPatternSIMD(reinterpret_cast<rsig_t>(&rttiTDRva), "xxxx", {".rdata", scanStart, m_ReadOnlyData.m_nSectionSize});
if (!reference)
break;
rttiTDRef.push_back(reference);
scanStart = reference.Offset(0x4).GetPtr(); // Set location to current reference + 0x4 so we avoid pushing it back again into the vector.
}
for (const CMemory& ref : rttiTDRef)
{
CMemory referenceOffset = ref.Offset(-0xC);
CMemory referenceOffset = reference.Offset(-0xC);
if (referenceOffset.GetValue<int32_t>() != 1) // Check if we got a RTTI Object Locator for this reference by checking if -0xC is 1, which is the 'signature' field which is always 1 on x64.
{
scanStart = reference.Offset(0x4).GetPtr(); // Set location to current reference + 0x4 so we avoid pushing it back again into the vector.
continue;
}
return FindPatternSIMD(reinterpret_cast<rsig_t>(&referenceOffset), "xxxxxxxx", { ".rdata", m_ReadOnlyData.m_pSectionBase, m_ReadOnlyData.m_nSectionSize }).OffsetSelf(0x8);
}