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//===----- ABI.h - ABI related declarations ---------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Enums/classes describing ABI related information about constructors,
/// destructors and thunks.
///
//===----------------------------------------------------------------------===//
#ifndef CLANG_BASIC_ABI_H
#define CLANG_BASIC_ABI_H
#include "llvm/Support/DataTypes.h"
namespace clang {
/// \brief C++ constructor types.
enum CXXCtorType {
Ctor_Complete, ///< Complete object ctor
Ctor_Base, ///< Base object ctor
Ctor_CompleteAllocating ///< Complete object allocating ctor
};
/// \brief C++ destructor types.
enum CXXDtorType {
Dtor_Deleting, ///< Deleting dtor
Dtor_Complete, ///< Complete object dtor
Dtor_Base ///< Base object dtor
};
/// \brief A return adjustment.
struct ReturnAdjustment {
/// \brief The non-virtual adjustment from the derived object to its
/// nearest virtual base.
int64_t NonVirtual;
/// \brief The offset (in bytes), relative to the address point
/// of the virtual base class offset.
int64_t VBaseOffsetOffset;
ReturnAdjustment() : NonVirtual(0), VBaseOffsetOffset(0) { }
bool isEmpty() const { return !NonVirtual && !VBaseOffsetOffset; }
friend bool operator==(const ReturnAdjustment &LHS,
const ReturnAdjustment &RHS) {
return LHS.NonVirtual == RHS.NonVirtual &&
LHS.VBaseOffsetOffset == RHS.VBaseOffsetOffset;
}
friend bool operator<(const ReturnAdjustment &LHS,
const ReturnAdjustment &RHS) {
if (LHS.NonVirtual < RHS.NonVirtual)
return true;
return LHS.NonVirtual == RHS.NonVirtual &&
LHS.VBaseOffsetOffset < RHS.VBaseOffsetOffset;
}
};
/// \brief A \c this pointer adjustment.
struct ThisAdjustment {
/// \brief The non-virtual adjustment from the derived object to its
/// nearest virtual base.
int64_t NonVirtual;
/// \brief The offset (in bytes), relative to the address point,
/// of the virtual call offset.
int64_t VCallOffsetOffset;
ThisAdjustment() : NonVirtual(0), VCallOffsetOffset(0) { }
bool isEmpty() const { return !NonVirtual && !VCallOffsetOffset; }
friend bool operator==(const ThisAdjustment &LHS,
const ThisAdjustment &RHS) {
return LHS.NonVirtual == RHS.NonVirtual &&
LHS.VCallOffsetOffset == RHS.VCallOffsetOffset;
}
friend bool operator<(const ThisAdjustment &LHS,
const ThisAdjustment &RHS) {
if (LHS.NonVirtual < RHS.NonVirtual)
return true;
return LHS.NonVirtual == RHS.NonVirtual &&
LHS.VCallOffsetOffset < RHS.VCallOffsetOffset;
}
};
/// \brief The \c this pointer adjustment as well as an optional return
/// adjustment for a thunk.
struct ThunkInfo {
/// \brief The \c this pointer adjustment.
ThisAdjustment This;
/// \brief The return adjustment.
ReturnAdjustment Return;
ThunkInfo() { }
ThunkInfo(const ThisAdjustment &This, const ReturnAdjustment &Return)
: This(This), Return(Return) { }
friend bool operator==(const ThunkInfo &LHS, const ThunkInfo &RHS) {
return LHS.This == RHS.This && LHS.Return == RHS.Return;
}
friend bool operator<(const ThunkInfo &LHS, const ThunkInfo &RHS) {
if (LHS.This < RHS.This)
return true;
return LHS.This == RHS.This && LHS.Return < RHS.Return;
}
bool isEmpty() const { return This.isEmpty() && Return.isEmpty(); }
};
} // end namespace clang
#endif // CLANG_BASIC_ABI_H
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