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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.
//
// File: CLRtoCOMCall.h
//
//
// Used to handle stub creation for managed to unmanaged transitions.
//
#ifndef __COMPLUSCALL_H__
#define __COMPLUSCALL_H__
#ifndef FEATURE_COMINTEROP
#error FEATURE_COMINTEROP is required for this file
#endif // FEATURE_COMINTEROP
#include "util.hpp"
class ComPlusCall
{
public:
//---------------------------------------------------------
// Debugger helper function
//---------------------------------------------------------
static TADDR GetFrameCallIP(FramedMethodFrame *frame);
static MethodDesc* GetILStubMethodDesc(MethodDesc* pMD, DWORD dwStubFlags);
static PCODE GetStubForILStub(MethodDesc* pMD, MethodDesc** ppStubMD);
static ComPlusCallInfo *PopulateComPlusCallMethodDesc(MethodDesc* pMD, DWORD* pdwStubFlags);
static MethodDesc *GetWinRTFactoryMethodForCtor(MethodDesc *pMDCtor, BOOL *pComposition);
static MethodDesc *GetWinRTFactoryMethodForStatic(MethodDesc *pMDStatic);
#ifdef _TARGET_X86_
static void Init();
static LPVOID GetRetThunk(UINT numStackBytes);
#endif // _TARGET_X86_
private:
ComPlusCall(); // prevent "new"'s on this class
#ifdef _TARGET_X86_
struct RetThunkCacheElement
{
RetThunkCacheElement()
{
LIMITED_METHOD_CONTRACT;
m_cbStack = 0;
m_pRetThunk = NULL;
}
UINT m_cbStack;
LPVOID m_pRetThunk;
};
class RetThunkSHashTraits : public NoRemoveSHashTraits< DefaultSHashTraits<RetThunkCacheElement> >
{
public:
typedef UINT key_t;
static key_t GetKey(element_t e) { LIMITED_METHOD_CONTRACT; return e.m_cbStack; }
static BOOL Equals(key_t k1, key_t k2) { LIMITED_METHOD_CONTRACT; return (k1 == k2); }
static count_t Hash(key_t k) { LIMITED_METHOD_CONTRACT; return (count_t)(size_t)k; }
static const element_t Null() { LIMITED_METHOD_CONTRACT; return RetThunkCacheElement(); }
static bool IsNull(const element_t &e) { LIMITED_METHOD_CONTRACT; return (e.m_pRetThunk == NULL); }
};
static SHash<RetThunkSHashTraits> *s_pRetThunkCache;
static CrstStatic s_RetThunkCacheCrst;
#endif // _TARGET_X86_
};
#endif // __COMPLUSCALL_H__
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