llvm/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp

//===-- PPCMCCodeEmitter.cpp - Convert PPC code to machine code -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the PPCMCCodeEmitter class.
//
//===----------------------------------------------------------------------===//

#include "PPCMCCodeEmitter.h"
#include "MCTargetDesc/PPCFixupKinds.h"
#include "PPCMCTargetDesc.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCFixup.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/EndianStream.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"
#include <cassert>
#include <cstdint>

usingnamespacellvm;

#define DEBUG_TYPE …

STATISTIC(MCNumEmitted, "Number of MC instructions emitted");

MCCodeEmitter *llvm::createPPCMCCodeEmitter(const MCInstrInfo &MCII,
                                            MCContext &Ctx) { … }

unsigned PPCMCCodeEmitter::
getDirectBrEncoding(const MCInst &MI, unsigned OpNo,
                    SmallVectorImpl<MCFixup> &Fixups,
                    const MCSubtargetInfo &STI) const { … }

/// Check if Opcode corresponds to a call instruction that should be marked
/// with the NOTOC relocation.
bool PPCMCCodeEmitter::isNoTOCCallInstr(const MCInst &MI) const { … }

unsigned PPCMCCodeEmitter::getCondBrEncoding(const MCInst &MI, unsigned OpNo,
                                     SmallVectorImpl<MCFixup> &Fixups,
                                     const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::
getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo,
                       SmallVectorImpl<MCFixup> &Fixups,
                       const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::
getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo,
                     SmallVectorImpl<MCFixup> &Fixups,
                     const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getVSRpEvenEncoding(const MCInst &MI, unsigned OpNo,
                                      SmallVectorImpl<MCFixup> &Fixups,
                                      const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::getImm16Encoding(const MCInst &MI, unsigned OpNo,
                                       SmallVectorImpl<MCFixup> &Fixups,
                                       const MCSubtargetInfo &STI) const { … }

uint64_t PPCMCCodeEmitter::getImm34Encoding(const MCInst &MI, unsigned OpNo,
                                            SmallVectorImpl<MCFixup> &Fixups,
                                            const MCSubtargetInfo &STI,
                                            MCFixupKind Fixup) const { … }

uint64_t
PPCMCCodeEmitter::getImm34EncodingNoPCRel(const MCInst &MI, unsigned OpNo,
                                          SmallVectorImpl<MCFixup> &Fixups,
                                          const MCSubtargetInfo &STI) const { … }

uint64_t
PPCMCCodeEmitter::getImm34EncodingPCRel(const MCInst &MI, unsigned OpNo,
                                        SmallVectorImpl<MCFixup> &Fixups,
                                        const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::getDispRIEncoding(const MCInst &MI, unsigned OpNo,
                                             SmallVectorImpl<MCFixup> &Fixups,
                                             const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispRIXEncoding(const MCInst &MI, unsigned OpNo,
                                     SmallVectorImpl<MCFixup> &Fixups,
                                     const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispRIX16Encoding(const MCInst &MI, unsigned OpNo,
                                       SmallVectorImpl<MCFixup> &Fixups,
                                       const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispRIHashEncoding(const MCInst &MI, unsigned OpNo,
                                        SmallVectorImpl<MCFixup> &Fixups,
                                        const MCSubtargetInfo &STI) const { … }

uint64_t
PPCMCCodeEmitter::getDispRI34PCRelEncoding(const MCInst &MI, unsigned OpNo,
                                           SmallVectorImpl<MCFixup> &Fixups,
                                           const MCSubtargetInfo &STI) const { … }

uint64_t
PPCMCCodeEmitter::getDispRI34Encoding(const MCInst &MI, unsigned OpNo,
                                      SmallVectorImpl<MCFixup> &Fixups,
                                      const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispSPE8Encoding(const MCInst &MI, unsigned OpNo,
                                      SmallVectorImpl<MCFixup> &Fixups,
                                      const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispSPE4Encoding(const MCInst &MI, unsigned OpNo,
                                      SmallVectorImpl<MCFixup> &Fixups,
                                      const MCSubtargetInfo &STI) const { … }

unsigned
PPCMCCodeEmitter::getDispSPE2Encoding(const MCInst &MI, unsigned OpNo,
                                      SmallVectorImpl<MCFixup> &Fixups,
                                      const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::getTLSRegEncoding(const MCInst &MI, unsigned OpNo,
                                       SmallVectorImpl<MCFixup> &Fixups,
                                       const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::getTLSCallEncoding(const MCInst &MI, unsigned OpNo,
                                       SmallVectorImpl<MCFixup> &Fixups,
                                       const MCSubtargetInfo &STI) const { … }

unsigned PPCMCCodeEmitter::
get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
                    SmallVectorImpl<MCFixup> &Fixups,
                    const MCSubtargetInfo &STI) const { … }

// Get the index for this operand in this instruction. This is needed for
// computing the register number in PPC::getRegNumForOperand() for
// any instructions that use a different numbering scheme for registers in
// different operands.
static unsigned getOpIdxForMO(const MCInst &MI, const MCOperand &MO) { … }

uint64_t PPCMCCodeEmitter::
getMachineOpValue(const MCInst &MI, const MCOperand &MO,
                  SmallVectorImpl<MCFixup> &Fixups,
                  const MCSubtargetInfo &STI) const { … }

void PPCMCCodeEmitter::encodeInstruction(const MCInst &MI,
                                         SmallVectorImpl<char> &CB,
                                         SmallVectorImpl<MCFixup> &Fixups,
                                         const MCSubtargetInfo &STI) const { … }

// Get the number of bytes used to encode the given MCInst.
unsigned PPCMCCodeEmitter::getInstSizeInBytes(const MCInst &MI) const { … }

bool PPCMCCodeEmitter::isPrefixedInstruction(const MCInst &MI) const { … }

#include "PPCGenMCCodeEmitter.inc"