mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 06:30:19 +00:00
f1a0090073
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135524 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
//===------------ FixedLenDecoderEmitter.h - Decoder Generator --*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// It contains the tablegen backend that emits the decoder functions for
|
|
// targets with fixed length instruction set.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef FixedLenDECODEREMITTER_H
|
|
#define FixedLenDECODEREMITTER_H
|
|
|
|
#include "CodeGenTarget.h"
|
|
#include "TableGenBackend.h"
|
|
|
|
#include "llvm/Support/DataTypes.h"
|
|
|
|
namespace llvm {
|
|
|
|
struct OperandInfo {
|
|
unsigned FieldBase;
|
|
unsigned FieldLength;
|
|
std::string Decoder;
|
|
|
|
OperandInfo(unsigned FB, unsigned FL, std::string D)
|
|
: FieldBase(FB), FieldLength(FL), Decoder(D) { }
|
|
};
|
|
|
|
class FixedLenDecoderEmitter : public TableGenBackend {
|
|
public:
|
|
FixedLenDecoderEmitter(RecordKeeper &R) :
|
|
Records(R), Target(R),
|
|
NumberedInstructions(Target.getInstructionsByEnumValue()) {}
|
|
|
|
// run - Output the code emitter
|
|
void run(raw_ostream &o);
|
|
|
|
private:
|
|
RecordKeeper &Records;
|
|
CodeGenTarget Target;
|
|
std::vector<const CodeGenInstruction*> NumberedInstructions;
|
|
std::vector<unsigned> Opcodes;
|
|
std::map<unsigned, std::vector<OperandInfo> > Operands;
|
|
|
|
};
|
|
|
|
} // end llvm namespace
|
|
|
|
#endif
|