mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-26 06:22:56 +02:00
19c3189ea5
Move the declaration of DebugLocDwarfExpression into DwarfExpression.h because it needs to be accessed from AsmPrinterDwarf.cpp and DwarfDebug.cpp NFC. llvm-svn: 225734
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
//===-- llvm/CodeGen/DwarfExpression.h - Dwarf Compile Unit ---*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains support for writing dwarf compile unit.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXPRESSION_H
|
|
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXPRESSION_H
|
|
|
|
#include "llvm/Support/DataTypes.h"
|
|
|
|
namespace llvm {
|
|
|
|
class AsmPrinter;
|
|
class ByteStreamer;
|
|
class TargetRegisterInfo;
|
|
|
|
/// Base class containing the logic for constructing DWARF expressions
|
|
/// independently of whether they are emitted into a DIE or into a .debug_loc
|
|
/// entry.
|
|
class DwarfExpression {
|
|
protected:
|
|
const AsmPrinter ≈
|
|
// Various convenience accessors that extract things out of AsmPrinter.
|
|
const TargetRegisterInfo *getTRI() const;
|
|
unsigned getDwarfVersion() const;
|
|
|
|
public:
|
|
DwarfExpression(const AsmPrinter &AP) : AP(AP) {}
|
|
virtual ~DwarfExpression() {}
|
|
|
|
virtual void EmitOp(uint8_t Op, const char* Comment = nullptr) = 0;
|
|
virtual void EmitSigned(int Value) = 0;
|
|
virtual void EmitUnsigned(unsigned Value) = 0;
|
|
|
|
virtual unsigned getFrameRegister() = 0;
|
|
|
|
/// Emit a dwarf register operation.
|
|
void AddReg(int DwarfReg, const char* Comment = nullptr);
|
|
/// Emit an (double-)indirect dwarf register operation.
|
|
void AddRegIndirect(int DwarfReg, int Offset, bool Deref = false);
|
|
|
|
/// Emit a dwarf register operation for describing
|
|
/// - a small value occupying only part of a register or
|
|
/// - a register representing only part of a value.
|
|
void AddOpPiece(unsigned SizeInBits, unsigned OffsetInBits = 0);
|
|
/// Emit a shift-right dwarf expression.
|
|
void AddShr(unsigned ShiftBy);
|
|
|
|
/// Emit an indirect dwarf register operation for the given machine register.
|
|
/// Returns false if no DWARF register exists for MachineReg.
|
|
bool AddMachineRegIndirect(unsigned MachineReg, int Offset);
|
|
|
|
/// \brief Emit a partial DWARF register operation.
|
|
/// \param MLoc the register
|
|
/// \param PieceSize size and
|
|
/// \param PieceOffset offset of the piece in bits, if this is one
|
|
/// piece of an aggregate value.
|
|
///
|
|
/// If size and offset is zero an operation for the entire
|
|
/// register is emitted: Some targets do not provide a DWARF
|
|
/// register number for every register. If this is the case, this
|
|
/// function will attempt to emit a DWARF register by emitting a
|
|
/// piece of a super-register or by piecing together multiple
|
|
/// subregisters that alias the register.
|
|
void AddMachineRegPiece(unsigned MachineReg,
|
|
unsigned PieceSizeInBits = 0,
|
|
unsigned PieceOffsetInBits = 0);
|
|
|
|
/// Emit a signed constant.
|
|
void AddSignedConstant(int Value);
|
|
/// Emit an unsigned constant.
|
|
void AddUnsignedConstant(unsigned Value);
|
|
};
|
|
|
|
|
|
/// DwarfExpression implementation for .debug_loc entries.
|
|
class DebugLocDwarfExpression : public DwarfExpression {
|
|
ByteStreamer &BS;
|
|
|
|
public:
|
|
DebugLocDwarfExpression(const AsmPrinter &AP, ByteStreamer &BS)
|
|
: DwarfExpression(AP), BS(BS) {}
|
|
|
|
void EmitOp(uint8_t Op, const char *Comment) override;
|
|
void EmitSigned(int Value) override;
|
|
void EmitUnsigned(unsigned Value) override;
|
|
unsigned getFrameRegister() override;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|