101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
//=- WebAssemblyMCCodeEmitter.cpp - Convert WebAssembly code to machine code -//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// \brief This file implements the WebAssemblyMCCodeEmitter class.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
|
|
#include "llvm/ADT/Statistic.h"
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/MC/MCFixup.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/MC/MCInstrInfo.h"
|
|
#include "llvm/MC/MCRegisterInfo.h"
|
|
#include "llvm/MC/MCSubtargetInfo.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
#define DEBUG_TYPE "mccodeemitter"
|
|
|
|
namespace {
|
|
class WebAssemblyMCCodeEmitter final : public MCCodeEmitter {
|
|
const MCRegisterInfo &MRI;
|
|
|
|
public:
|
|
WebAssemblyMCCodeEmitter(const MCInstrInfo &, const MCRegisterInfo &mri,
|
|
MCContext &)
|
|
: MRI(mri) {}
|
|
|
|
~WebAssemblyMCCodeEmitter() override {}
|
|
|
|
/// TableGen'erated function for getting the binary encoding for an
|
|
/// instruction.
|
|
uint64_t getBinaryCodeForInstr(const MCInst &MI,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const;
|
|
|
|
/// Return binary encoding of operand. If the machine operand requires
|
|
/// relocation, record the relocation and return zero.
|
|
unsigned getMachineOpValue(const MCInst &MI, const MCOperand &MO,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const;
|
|
|
|
uint64_t getMemoryOpValue(const MCInst &MI, unsigned Op,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const;
|
|
|
|
void encodeInstruction(const MCInst &MI, raw_ostream &OS,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const override;
|
|
};
|
|
} // end anonymous namespace
|
|
|
|
MCCodeEmitter *llvm::createWebAssemblyMCCodeEmitter(const MCInstrInfo &MCII,
|
|
const MCRegisterInfo &MRI,
|
|
MCContext &Ctx) {
|
|
return new WebAssemblyMCCodeEmitter(MCII, MRI, Ctx);
|
|
}
|
|
|
|
unsigned WebAssemblyMCCodeEmitter::getMachineOpValue(
|
|
const MCInst &MI, const MCOperand &MO, SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const {
|
|
if (MO.isReg())
|
|
return MRI.getEncodingValue(MO.getReg());
|
|
if (MO.isImm())
|
|
return static_cast<unsigned>(MO.getImm());
|
|
|
|
assert(MO.isExpr());
|
|
|
|
assert(MO.getExpr()->getKind() == MCExpr::SymbolRef);
|
|
|
|
assert(false && "FIXME: not implemented yet");
|
|
|
|
return 0;
|
|
}
|
|
|
|
void WebAssemblyMCCodeEmitter::encodeInstruction(
|
|
const MCInst &MI, raw_ostream &OS, SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const {
|
|
assert(false && "FIXME: not implemented yet");
|
|
}
|
|
|
|
// Encode WebAssembly Memory Operand
|
|
uint64_t
|
|
WebAssemblyMCCodeEmitter::getMemoryOpValue(const MCInst &MI, unsigned Op,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const {
|
|
assert(false && "FIXME: not implemented yet");
|
|
return 0;
|
|
}
|
|
|
|
#include "WebAssemblyGenMCCodeEmitter.inc"
|