mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-29 13:29:28 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74572 91177308-0d34-0410-b5e6-96231b3b80d8
143 lines
3.8 KiB
C++
143 lines
3.8 KiB
C++
//===-- llvm/MC/MCInst.h - MCInst class -------------------------*- 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 the declaration of the MCInst and MCOperand classes, which
|
|
// is the basic representation used to represent low-level machine code
|
|
// instructions.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCINST_H
|
|
#define LLVM_MC_MCINST_H
|
|
|
|
#include "llvm/MC/MCValue.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/Support/DataTypes.h"
|
|
#include "llvm/Support/DebugLoc.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// MCOperand - Instances of this class represent operands of the MCInst class.
|
|
/// This is a simple discriminated union.
|
|
class MCOperand {
|
|
enum MachineOperandType {
|
|
kInvalid, ///< Uninitialized.
|
|
kRegister, ///< Register operand.
|
|
kImmediate, ///< Immediate operand.
|
|
kMBBLabel, ///< Basic block label.
|
|
kMCValue ///< Relocatable immediate operand.
|
|
};
|
|
unsigned char Kind;
|
|
|
|
union {
|
|
unsigned RegVal;
|
|
int64_t ImmVal;
|
|
MCValue MCValueVal;
|
|
struct {
|
|
unsigned FunctionNo;
|
|
unsigned BlockNo;
|
|
} MBBLabel;
|
|
};
|
|
public:
|
|
|
|
MCOperand() : Kind(kInvalid) {}
|
|
MCOperand(const MCOperand &RHS) { *this = RHS; }
|
|
|
|
bool isValid() const { return Kind != kInvalid; }
|
|
bool isReg() const { return Kind == kRegister; }
|
|
bool isImm() const { return Kind == kImmediate; }
|
|
bool isMBBLabel() const { return Kind == kMBBLabel; }
|
|
bool isMCValue() const { return Kind == kMCValue; }
|
|
|
|
/// getReg - Returns the register number.
|
|
unsigned getReg() const {
|
|
assert(isReg() && "This is not a register operand!");
|
|
return RegVal;
|
|
}
|
|
|
|
/// setReg - Set the register number.
|
|
void setReg(unsigned Reg) {
|
|
assert(isReg() && "This is not a register operand!");
|
|
RegVal = Reg;
|
|
}
|
|
|
|
int64_t getImm() const {
|
|
assert(isImm() && "This is not an immediate");
|
|
return ImmVal;
|
|
}
|
|
void setImm(int64_t Val) {
|
|
assert(isImm() && "This is not an immediate");
|
|
ImmVal = Val;
|
|
}
|
|
|
|
unsigned getMBBLabelFunction() const {
|
|
assert(isMBBLabel() && "Wrong accessor");
|
|
return MBBLabel.FunctionNo;
|
|
}
|
|
unsigned getMBBLabelBlock() const {
|
|
assert(isMBBLabel() && "Wrong accessor");
|
|
return MBBLabel.BlockNo;
|
|
}
|
|
|
|
const MCValue &getMCValue() const {
|
|
assert(isMCValue() && "This is not an MCValue");
|
|
return MCValueVal;
|
|
}
|
|
void setMCValue(const MCValue &Val) {
|
|
assert(isMCValue() && "This is not an MCValue");
|
|
MCValueVal = Val;
|
|
}
|
|
|
|
void MakeReg(unsigned Reg) {
|
|
Kind = kRegister;
|
|
RegVal = Reg;
|
|
}
|
|
void MakeImm(int64_t Val) {
|
|
Kind = kImmediate;
|
|
ImmVal = Val;
|
|
}
|
|
void MakeMBBLabel(unsigned Fn, unsigned MBB) {
|
|
Kind = kMBBLabel;
|
|
MBBLabel.FunctionNo = Fn;
|
|
MBBLabel.BlockNo = MBB;
|
|
}
|
|
void MakeMCValue(const MCValue &Val) {
|
|
Kind = kMCValue;
|
|
MCValueVal = Val;
|
|
}
|
|
};
|
|
|
|
|
|
/// MCInst - Instances of this class represent a single low-level machine
|
|
/// instruction.
|
|
class MCInst {
|
|
unsigned Opcode;
|
|
SmallVector<MCOperand, 8> Operands;
|
|
public:
|
|
MCInst() : Opcode(~0U) {}
|
|
|
|
void setOpcode(unsigned Op) { Opcode = Op; }
|
|
|
|
unsigned getOpcode() const { return Opcode; }
|
|
DebugLoc getDebugLoc() const { return DebugLoc(); }
|
|
|
|
const MCOperand &getOperand(unsigned i) const { return Operands[i]; }
|
|
MCOperand &getOperand(unsigned i) { return Operands[i]; }
|
|
unsigned getNumOperands() const { return Operands.size(); }
|
|
|
|
void addOperand(const MCOperand &Op) {
|
|
Operands.push_back(Op);
|
|
}
|
|
};
|
|
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|