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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
// ZapWrapper.cpp
//
//
// ZapNode that wraps EE datastructure for zapping
//
// ======================================================================================
#include "common.h"
#include "zapwrapper.h"
void ZapWrapperTable::Resolve()
{
for (WrapperTable::Iterator i = m_entries.Begin(), end = m_entries.End(); i != end; i++)
{
(*i)->Resolve(m_pImage);
}
}
// ======================================================================================
// Actual placeholders
class ZapMethodHandle : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapMethodHandle(CORINFO_METHOD_HANDLE(GetHandle())));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_MethodHandle;
}
};
ZapNode * ZapWrapperTable::GetMethodHandle(CORINFO_METHOD_HANDLE handle)
{
return GetPlaceHolder<ZapMethodHandle, ZapNodeType_MethodHandle>(handle);
}
class ZapClassHandle : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapClassHandle(CORINFO_CLASS_HANDLE(GetHandle())));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_ClassHandle;
}
};
ZapNode * ZapWrapperTable::GetClassHandle(CORINFO_CLASS_HANDLE handle)
{
return GetPlaceHolder<ZapClassHandle, ZapNodeType_ClassHandle>(handle);
}
class ZapFieldHandle : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapFieldHandle(CORINFO_FIELD_HANDLE(GetHandle())));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_FieldHandle;
}
};
ZapNode * ZapWrapperTable::GetFieldHandle(CORINFO_FIELD_HANDLE handle)
{
return GetPlaceHolder<ZapFieldHandle, ZapNodeType_FieldHandle>(handle);
}
class ZapAddrOfPInvokeFixup : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapAddressOfPInvokeFixup(CORINFO_METHOD_HANDLE((BYTE *)GetHandle() - 1)));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_AddrOfPInvokeFixup;
}
};
ZapNode * ZapWrapperTable::GetAddrOfPInvokeFixup(CORINFO_METHOD_HANDLE handle)
{
// Disambiguate the normal method handle and address of P/Invoke fixup by adding 1
return GetPlaceHolder<ZapAddrOfPInvokeFixup, ZapNodeType_AddrOfPInvokeFixup>((BYTE *)handle + 1);
}
class ZapGenericHandle : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapGenericHandle(CORINFO_GENERIC_HANDLE(GetHandle())));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_GenericHandle;
}
};
ZapNode * ZapWrapperTable::GetGenericHandle(CORINFO_GENERIC_HANDLE handle)
{
return GetPlaceHolder<ZapGenericHandle, ZapNodeType_GenericHandle>(handle);
}
class ZapModuleIDHandle : public ZapWrapper
{
public:
virtual void Resolve(ZapImage * pImage)
{
SetRVA(pImage->m_pPreloader->MapModuleIDHandle(CORINFO_MODULE_HANDLE(GetHandle())));
}
virtual ZapNodeType GetType()
{
return ZapNodeType_ModuleIDHandle;
}
};
ZapNode * ZapWrapperTable::GetModuleIDHandle(CORINFO_MODULE_HANDLE handle)
{
return GetPlaceHolder<ZapModuleIDHandle, ZapNodeType_ModuleIDHandle>(handle);
}
class ZapStub : public ZapWrapper
{
DWORD m_dwStubSize;
public:
ZapStub(PVOID pStubData, DWORD dwStubSize)
: ZapWrapper(pStubData), m_dwStubSize(dwStubSize)
{
}
virtual DWORD GetSize()
{
return m_dwStubSize;
}
virtual ZapNodeType GetType()
{
return ZapNodeType_Stub;
}
virtual UINT GetAlignment()
{
return DEFAULT_CODE_ALIGN;
}
virtual void Save(ZapWriter * pZapWriter)
{
DWORD dwSize = GetSize();
PVOID pStub = GetHandle();
SBuffer stubClone(dwSize);
ICorCompileInfo *pCompileInfo = ZapImage::GetImage(pZapWriter)->GetCompileInfo();
IfFailThrow(pCompileInfo->GetStubClone(pStub,
const_cast<BYTE *>(static_cast<const BYTE *>(stubClone)), dwSize));
pZapWriter->Write(const_cast<BYTE *>(static_cast<const BYTE *>(stubClone)), dwSize);
}
};
ZapNode * ZapWrapperTable::GetStub(void * pStub)
{
DWORD dwStubSize = 0;
void * pStubData = m_pImage->GetCompileInfo()->GetStubSize(pStub, &dwStubSize);
_ASSERTE(pStubData < pStub && pStub < (BYTE*)pStubData + dwStubSize);
ZapStub * pZapStub = (ZapStub *)m_entries.Lookup(pStubData);
if (pZapStub == NULL)
{
// did not find the delegate stub, need to emit the stub in the native image
pZapStub = new (m_pImage->GetHeap()) ZapStub(pStubData, dwStubSize);
m_entries.Add(pZapStub);
}
// Return inner ptr for the entrypoint
_ASSERTE(pZapStub->GetType() == ZapNodeType_Stub);
return m_pImage->GetInnerPtr(pZapStub, (PBYTE)pStub - (PBYTE)pStubData);
}
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