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authorDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
commit0b57cec536236d46e3dba9bd041533462f33dbb7 (patch)
tree56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp')
-rw-r--r--contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp359
1 files changed, 0 insertions, 359 deletions
diff --git a/contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp b/contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
deleted file mode 100644
index 7a8af57961cb..000000000000
--- a/contrib/llvm/lib/Target/PowerPC/Disassembler/PPCDisassembler.cpp
+++ /dev/null
@@ -1,359 +0,0 @@
-//===------ PPCDisassembler.cpp - Disassembler for PowerPC ------*- C++ -*-===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/PPCMCTargetDesc.h"
-#include "TargetInfo/PowerPCTargetInfo.h"
-#include "llvm/MC/MCDisassembler/MCDisassembler.h"
-#include "llvm/MC/MCFixedLenDisassembler.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/TargetRegistry.h"
-
-using namespace llvm;
-
-DEFINE_PPC_REGCLASSES;
-
-#define DEBUG_TYPE "ppc-disassembler"
-
-typedef MCDisassembler::DecodeStatus DecodeStatus;
-
-namespace {
-class PPCDisassembler : public MCDisassembler {
- bool IsLittleEndian;
-
-public:
- PPCDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx,
- bool IsLittleEndian)
- : MCDisassembler(STI, Ctx), IsLittleEndian(IsLittleEndian) {}
-
- DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
- ArrayRef<uint8_t> Bytes, uint64_t Address,
- raw_ostream &VStream,
- raw_ostream &CStream) const override;
-};
-} // end anonymous namespace
-
-static MCDisassembler *createPPCDisassembler(const Target &T,
- const MCSubtargetInfo &STI,
- MCContext &Ctx) {
- return new PPCDisassembler(STI, Ctx, /*IsLittleEndian=*/false);
-}
-
-static MCDisassembler *createPPCLEDisassembler(const Target &T,
- const MCSubtargetInfo &STI,
- MCContext &Ctx) {
- return new PPCDisassembler(STI, Ctx, /*IsLittleEndian=*/true);
-}
-
-extern "C" void LLVMInitializePowerPCDisassembler() {
- // Register the disassembler for each target.
- TargetRegistry::RegisterMCDisassembler(getThePPC32Target(),
- createPPCDisassembler);
- TargetRegistry::RegisterMCDisassembler(getThePPC64Target(),
- createPPCDisassembler);
- TargetRegistry::RegisterMCDisassembler(getThePPC64LETarget(),
- createPPCLEDisassembler);
-}
-
-static DecodeStatus DecodePCRel24BranchTarget(MCInst &Inst, unsigned Imm,
- uint64_t Addr,
- const void *Decoder) {
- int32_t Offset = SignExtend32<24>(Imm);
- Inst.addOperand(MCOperand::createImm(Offset));
- return MCDisassembler::Success;
-}
-
-// FIXME: These can be generated by TableGen from the existing register
-// encoding values!
-
-template <std::size_t N>
-static DecodeStatus decodeRegisterClass(MCInst &Inst, uint64_t RegNo,
- const MCPhysReg (&Regs)[N]) {
- assert(RegNo < N && "Invalid register number");
- Inst.addOperand(MCOperand::createReg(Regs[RegNo]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeCRRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, CRRegs);
-}
-
-static DecodeStatus DecodeCRBITRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, CRBITRegs);
-}
-
-static DecodeStatus DecodeF4RCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, FRegs);
-}
-
-static DecodeStatus DecodeF8RCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, FRegs);
-}
-
-static DecodeStatus DecodeVFRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, VFRegs);
-}
-
-static DecodeStatus DecodeVRRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, VRegs);
-}
-
-static DecodeStatus DecodeVSRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, VSRegs);
-}
-
-static DecodeStatus DecodeVSFRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, VSFRegs);
-}
-
-static DecodeStatus DecodeVSSRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, VSSRegs);
-}
-
-static DecodeStatus DecodeGPRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, RRegs);
-}
-
-static DecodeStatus DecodeGPRC_NOR0RegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, RRegsNoR0);
-}
-
-static DecodeStatus DecodeG8RCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, XRegs);
-}
-
-static DecodeStatus DecodeG8RC_NOX0RegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, XRegsNoX0);
-}
-
-#define DecodePointerLikeRegClass0 DecodeGPRCRegisterClass
-#define DecodePointerLikeRegClass1 DecodeGPRC_NOR0RegisterClass
-
-static DecodeStatus DecodeQFRCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, QFRegs);
-}
-
-static DecodeStatus DecodeSPE4RCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, RRegs);
-}
-
-static DecodeStatus DecodeSPERCRegisterClass(MCInst &Inst, uint64_t RegNo,
- uint64_t Address,
- const void *Decoder) {
- return decodeRegisterClass(Inst, RegNo, SPERegs);
-}
-
-#define DecodeQSRCRegisterClass DecodeQFRCRegisterClass
-#define DecodeQBRCRegisterClass DecodeQFRCRegisterClass
-
-template<unsigned N>
-static DecodeStatus decodeUImmOperand(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- assert(isUInt<N>(Imm) && "Invalid immediate");
- Inst.addOperand(MCOperand::createImm(Imm));
- return MCDisassembler::Success;
-}
-
-template<unsigned N>
-static DecodeStatus decodeSImmOperand(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- assert(isUInt<N>(Imm) && "Invalid immediate");
- Inst.addOperand(MCOperand::createImm(SignExtend64<N>(Imm)));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeMemRIOperands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the memri field (imm, reg), which has the low 16-bits as the
- // displacement and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 16;
- uint64_t Disp = Imm & 0xFFFF;
-
- assert(Base < 32 && "Invalid base register");
-
- switch (Inst.getOpcode()) {
- default: break;
- case PPC::LBZU:
- case PPC::LHAU:
- case PPC::LHZU:
- case PPC::LWZU:
- case PPC::LFSU:
- case PPC::LFDU:
- // Add the tied output operand.
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- break;
- case PPC::STBU:
- case PPC::STHU:
- case PPC::STWU:
- case PPC::STFSU:
- case PPC::STFDU:
- Inst.insert(Inst.begin(), MCOperand::createReg(RRegsNoR0[Base]));
- break;
- }
-
- Inst.addOperand(MCOperand::createImm(SignExtend64<16>(Disp)));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeMemRIXOperands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the memrix field (imm, reg), which has the low 14-bits as the
- // displacement and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 14;
- uint64_t Disp = Imm & 0x3FFF;
-
- assert(Base < 32 && "Invalid base register");
-
- if (Inst.getOpcode() == PPC::LDU)
- // Add the tied output operand.
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- else if (Inst.getOpcode() == PPC::STDU)
- Inst.insert(Inst.begin(), MCOperand::createReg(RRegsNoR0[Base]));
-
- Inst.addOperand(MCOperand::createImm(SignExtend64<16>(Disp << 2)));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeMemRIX16Operands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the memrix16 field (imm, reg), which has the low 12-bits as the
- // displacement with 16-byte aligned, and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 12;
- uint64_t Disp = Imm & 0xFFF;
-
- assert(Base < 32 && "Invalid base register");
-
- Inst.addOperand(MCOperand::createImm(SignExtend64<16>(Disp << 4)));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeSPE8Operands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the spe8disp field (imm, reg), which has the low 5-bits as the
- // displacement with 8-byte aligned, and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 5;
- uint64_t Disp = Imm & 0x1F;
-
- assert(Base < 32 && "Invalid base register");
-
- Inst.addOperand(MCOperand::createImm(Disp << 3));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeSPE4Operands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the spe4disp field (imm, reg), which has the low 5-bits as the
- // displacement with 4-byte aligned, and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 5;
- uint64_t Disp = Imm & 0x1F;
-
- assert(Base < 32 && "Invalid base register");
-
- Inst.addOperand(MCOperand::createImm(Disp << 2));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeSPE2Operands(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // Decode the spe2disp field (imm, reg), which has the low 5-bits as the
- // displacement with 2-byte aligned, and the next 5 bits as the register #.
-
- uint64_t Base = Imm >> 5;
- uint64_t Disp = Imm & 0x1F;
-
- assert(Base < 32 && "Invalid base register");
-
- Inst.addOperand(MCOperand::createImm(Disp << 1));
- Inst.addOperand(MCOperand::createReg(RRegsNoR0[Base]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus decodeCRBitMOperand(MCInst &Inst, uint64_t Imm,
- int64_t Address, const void *Decoder) {
- // The cr bit encoding is 0x80 >> cr_reg_num.
-
- unsigned Zeros = countTrailingZeros(Imm);
- assert(Zeros < 8 && "Invalid CR bit value");
-
- Inst.addOperand(MCOperand::createReg(CRRegs[7 - Zeros]));
- return MCDisassembler::Success;
-}
-
-#include "PPCGenDisassemblerTables.inc"
-
-DecodeStatus PPCDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
- ArrayRef<uint8_t> Bytes,
- uint64_t Address, raw_ostream &OS,
- raw_ostream &CS) const {
- // Get the four bytes of the instruction.
- Size = 4;
- if (Bytes.size() < 4) {
- Size = 0;
- return MCDisassembler::Fail;
- }
-
- // Read the instruction in the proper endianness.
- uint32_t Inst = IsLittleEndian ? support::endian::read32le(Bytes.data())
- : support::endian::read32be(Bytes.data());
-
- if (STI.getFeatureBits()[PPC::FeatureQPX]) {
- DecodeStatus result =
- decodeInstruction(DecoderTableQPX32, MI, Inst, Address, this, STI);
- if (result != MCDisassembler::Fail)
- return result;
- } else if (STI.getFeatureBits()[PPC::FeatureSPE]) {
- DecodeStatus result =
- decodeInstruction(DecoderTableSPE32, MI, Inst, Address, this, STI);
- if (result != MCDisassembler::Fail)
- return result;
- }
-
- return decodeInstruction(DecoderTable32, MI, Inst, Address, this, STI);
-}
-