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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/Sparc/Disassembler/SparcDisassembler.cpp
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/Target/Sparc/Disassembler/SparcDisassembler.cpp')
-rw-r--r--contrib/llvm/lib/Target/Sparc/Disassembler/SparcDisassembler.cpp662
1 files changed, 0 insertions, 662 deletions
diff --git a/contrib/llvm/lib/Target/Sparc/Disassembler/SparcDisassembler.cpp b/contrib/llvm/lib/Target/Sparc/Disassembler/SparcDisassembler.cpp
deleted file mode 100644
index bee331874e96..000000000000
--- a/contrib/llvm/lib/Target/Sparc/Disassembler/SparcDisassembler.cpp
+++ /dev/null
@@ -1,662 +0,0 @@
-//===- SparcDisassembler.cpp - Disassembler for Sparc -----------*- 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
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is part of the Sparc Disassembler.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/SparcMCTargetDesc.h"
-#include "TargetInfo/SparcTargetInfo.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCDisassembler/MCDisassembler.h"
-#include "llvm/MC/MCFixedLenDisassembler.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/Support/TargetRegistry.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "sparc-disassembler"
-
-typedef MCDisassembler::DecodeStatus DecodeStatus;
-
-namespace {
-
-/// A disassembler class for Sparc.
-class SparcDisassembler : public MCDisassembler {
-public:
- SparcDisassembler(const MCSubtargetInfo &STI, MCContext &Ctx)
- : MCDisassembler(STI, Ctx) {}
- virtual ~SparcDisassembler() {}
-
- DecodeStatus getInstruction(MCInst &Instr, uint64_t &Size,
- ArrayRef<uint8_t> Bytes, uint64_t Address,
- raw_ostream &VStream,
- raw_ostream &CStream) const override;
-};
-}
-
-static MCDisassembler *createSparcDisassembler(const Target &T,
- const MCSubtargetInfo &STI,
- MCContext &Ctx) {
- return new SparcDisassembler(STI, Ctx);
-}
-
-
-extern "C" void LLVMInitializeSparcDisassembler() {
- // Register the disassembler.
- TargetRegistry::RegisterMCDisassembler(getTheSparcTarget(),
- createSparcDisassembler);
- TargetRegistry::RegisterMCDisassembler(getTheSparcV9Target(),
- createSparcDisassembler);
- TargetRegistry::RegisterMCDisassembler(getTheSparcelTarget(),
- createSparcDisassembler);
-}
-
-static const unsigned IntRegDecoderTable[] = {
- SP::G0, SP::G1, SP::G2, SP::G3,
- SP::G4, SP::G5, SP::G6, SP::G7,
- SP::O0, SP::O1, SP::O2, SP::O3,
- SP::O4, SP::O5, SP::O6, SP::O7,
- SP::L0, SP::L1, SP::L2, SP::L3,
- SP::L4, SP::L5, SP::L6, SP::L7,
- SP::I0, SP::I1, SP::I2, SP::I3,
- SP::I4, SP::I5, SP::I6, SP::I7 };
-
-static const unsigned FPRegDecoderTable[] = {
- SP::F0, SP::F1, SP::F2, SP::F3,
- SP::F4, SP::F5, SP::F6, SP::F7,
- SP::F8, SP::F9, SP::F10, SP::F11,
- SP::F12, SP::F13, SP::F14, SP::F15,
- SP::F16, SP::F17, SP::F18, SP::F19,
- SP::F20, SP::F21, SP::F22, SP::F23,
- SP::F24, SP::F25, SP::F26, SP::F27,
- SP::F28, SP::F29, SP::F30, SP::F31 };
-
-static const unsigned DFPRegDecoderTable[] = {
- SP::D0, SP::D16, SP::D1, SP::D17,
- SP::D2, SP::D18, SP::D3, SP::D19,
- SP::D4, SP::D20, SP::D5, SP::D21,
- SP::D6, SP::D22, SP::D7, SP::D23,
- SP::D8, SP::D24, SP::D9, SP::D25,
- SP::D10, SP::D26, SP::D11, SP::D27,
- SP::D12, SP::D28, SP::D13, SP::D29,
- SP::D14, SP::D30, SP::D15, SP::D31 };
-
-static const unsigned QFPRegDecoderTable[] = {
- SP::Q0, SP::Q8, ~0U, ~0U,
- SP::Q1, SP::Q9, ~0U, ~0U,
- SP::Q2, SP::Q10, ~0U, ~0U,
- SP::Q3, SP::Q11, ~0U, ~0U,
- SP::Q4, SP::Q12, ~0U, ~0U,
- SP::Q5, SP::Q13, ~0U, ~0U,
- SP::Q6, SP::Q14, ~0U, ~0U,
- SP::Q7, SP::Q15, ~0U, ~0U } ;
-
-static const unsigned FCCRegDecoderTable[] = {
- SP::FCC0, SP::FCC1, SP::FCC2, SP::FCC3 };
-
-static const unsigned ASRRegDecoderTable[] = {
- SP::Y, SP::ASR1, SP::ASR2, SP::ASR3,
- SP::ASR4, SP::ASR5, SP::ASR6, SP::ASR7,
- SP::ASR8, SP::ASR9, SP::ASR10, SP::ASR11,
- SP::ASR12, SP::ASR13, SP::ASR14, SP::ASR15,
- SP::ASR16, SP::ASR17, SP::ASR18, SP::ASR19,
- SP::ASR20, SP::ASR21, SP::ASR22, SP::ASR23,
- SP::ASR24, SP::ASR25, SP::ASR26, SP::ASR27,
- SP::ASR28, SP::ASR29, SP::ASR30, SP::ASR31};
-
-static const unsigned PRRegDecoderTable[] = {
- SP::TPC, SP::TNPC, SP::TSTATE, SP::TT, SP::TICK, SP::TBA, SP::PSTATE,
- SP::TL, SP::PIL, SP::CWP, SP::CANSAVE, SP::CANRESTORE, SP::CLEANWIN,
- SP::OTHERWIN, SP::WSTATE
-};
-
-static const uint16_t IntPairDecoderTable[] = {
- SP::G0_G1, SP::G2_G3, SP::G4_G5, SP::G6_G7,
- SP::O0_O1, SP::O2_O3, SP::O4_O5, SP::O6_O7,
- SP::L0_L1, SP::L2_L3, SP::L4_L5, SP::L6_L7,
- SP::I0_I1, SP::I2_I3, SP::I4_I5, SP::I6_I7,
-};
-
-static const unsigned CPRegDecoderTable[] = {
- SP::C0, SP::C1, SP::C2, SP::C3,
- SP::C4, SP::C5, SP::C6, SP::C7,
- SP::C8, SP::C9, SP::C10, SP::C11,
- SP::C12, SP::C13, SP::C14, SP::C15,
- SP::C16, SP::C17, SP::C18, SP::C19,
- SP::C20, SP::C21, SP::C22, SP::C23,
- SP::C24, SP::C25, SP::C26, SP::C27,
- SP::C28, SP::C29, SP::C30, SP::C31
-};
-
-
-static const uint16_t CPPairDecoderTable[] = {
- SP::C0_C1, SP::C2_C3, SP::C4_C5, SP::C6_C7,
- SP::C8_C9, SP::C10_C11, SP::C12_C13, SP::C14_C15,
- SP::C16_C17, SP::C18_C19, SP::C20_C21, SP::C22_C23,
- SP::C24_C25, SP::C26_C27, SP::C28_C29, SP::C30_C31
-};
-
-static DecodeStatus DecodeIntRegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- unsigned Reg = IntRegDecoderTable[RegNo];
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeI64RegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- unsigned Reg = IntRegDecoderTable[RegNo];
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-
-static DecodeStatus DecodeFPRegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- unsigned Reg = FPRegDecoderTable[RegNo];
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-
-static DecodeStatus DecodeDFPRegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- unsigned Reg = DFPRegDecoderTable[RegNo];
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-
-static DecodeStatus DecodeQFPRegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
-
- unsigned Reg = QFPRegDecoderTable[RegNo];
- if (Reg == ~0U)
- return MCDisassembler::Fail;
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeCPRegsRegisterClass(MCInst &Inst,
- unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- unsigned Reg = CPRegDecoderTable[RegNo];
- Inst.addOperand(MCOperand::createReg(Reg));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeFCCRegsRegisterClass(MCInst &Inst, unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 3)
- return MCDisassembler::Fail;
- Inst.addOperand(MCOperand::createReg(FCCRegDecoderTable[RegNo]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeASRRegsRegisterClass(MCInst &Inst, unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
- Inst.addOperand(MCOperand::createReg(ASRRegDecoderTable[RegNo]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodePRRegsRegisterClass(MCInst &Inst, unsigned RegNo,
- uint64_t Address,
- const void *Decoder) {
- if (RegNo >= array_lengthof(PRRegDecoderTable))
- return MCDisassembler::Fail;
- Inst.addOperand(MCOperand::createReg(PRRegDecoderTable[RegNo]));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeIntPairRegisterClass(MCInst &Inst, unsigned RegNo,
- uint64_t Address, const void *Decoder) {
- DecodeStatus S = MCDisassembler::Success;
-
- if (RegNo > 31)
- return MCDisassembler::Fail;
-
- if ((RegNo & 1))
- S = MCDisassembler::SoftFail;
-
- unsigned RegisterPair = IntPairDecoderTable[RegNo/2];
- Inst.addOperand(MCOperand::createReg(RegisterPair));
- return S;
-}
-
-static DecodeStatus DecodeCPPairRegisterClass(MCInst &Inst, unsigned RegNo,
- uint64_t Address, const void *Decoder) {
- if (RegNo > 31)
- return MCDisassembler::Fail;
-
- unsigned RegisterPair = CPPairDecoderTable[RegNo/2];
- Inst.addOperand(MCOperand::createReg(RegisterPair));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeLoadInt(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadIntPair(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadDFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadQFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadCP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeLoadCPPair(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeStoreInt(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreIntPair(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreFP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreDFP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreQFP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreCP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeStoreCPPair(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeCall(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeSIMM13(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder);
-static DecodeStatus DecodeJMPL(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeReturn(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeSWAP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-static DecodeStatus DecodeTRAP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder);
-
-#include "SparcGenDisassemblerTables.inc"
-
-/// Read four bytes from the ArrayRef and return 32 bit word.
-static DecodeStatus readInstruction32(ArrayRef<uint8_t> Bytes, uint64_t Address,
- uint64_t &Size, uint32_t &Insn,
- bool IsLittleEndian) {
- // We want to read exactly 4 Bytes of data.
- if (Bytes.size() < 4) {
- Size = 0;
- return MCDisassembler::Fail;
- }
-
- Insn = IsLittleEndian
- ? (Bytes[0] << 0) | (Bytes[1] << 8) | (Bytes[2] << 16) |
- (Bytes[3] << 24)
- : (Bytes[3] << 0) | (Bytes[2] << 8) | (Bytes[1] << 16) |
- (Bytes[0] << 24);
-
- return MCDisassembler::Success;
-}
-
-DecodeStatus SparcDisassembler::getInstruction(MCInst &Instr, uint64_t &Size,
- ArrayRef<uint8_t> Bytes,
- uint64_t Address,
- raw_ostream &VStream,
- raw_ostream &CStream) const {
- uint32_t Insn;
- bool isLittleEndian = getContext().getAsmInfo()->isLittleEndian();
- DecodeStatus Result =
- readInstruction32(Bytes, Address, Size, Insn, isLittleEndian);
- if (Result == MCDisassembler::Fail)
- return MCDisassembler::Fail;
-
- // Calling the auto-generated decoder function.
-
- if (STI.getFeatureBits()[Sparc::FeatureV9])
- {
- Result = decodeInstruction(DecoderTableSparcV932, Instr, Insn, Address, this, STI);
- }
- else
- {
- Result = decodeInstruction(DecoderTableSparcV832, Instr, Insn, Address, this, STI);
- }
- if (Result != MCDisassembler::Fail)
- return Result;
-
- Result =
- decodeInstruction(DecoderTableSparc32, Instr, Insn, Address, this, STI);
-
- if (Result != MCDisassembler::Fail) {
- Size = 4;
- return Result;
- }
-
- return MCDisassembler::Fail;
-}
-
-
-typedef DecodeStatus (*DecodeFunc)(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder);
-
-static DecodeStatus DecodeMem(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder,
- bool isLoad, DecodeFunc DecodeRD) {
- unsigned rd = fieldFromInstruction(insn, 25, 5);
- unsigned rs1 = fieldFromInstruction(insn, 14, 5);
- bool isImm = fieldFromInstruction(insn, 13, 1);
- bool hasAsi = fieldFromInstruction(insn, 23, 1); // (in op3 field)
- unsigned asi = fieldFromInstruction(insn, 5, 8);
- unsigned rs2 = 0;
- unsigned simm13 = 0;
- if (isImm)
- simm13 = SignExtend32<13>(fieldFromInstruction(insn, 0, 13));
- else
- rs2 = fieldFromInstruction(insn, 0, 5);
-
- DecodeStatus status;
- if (isLoad) {
- status = DecodeRD(MI, rd, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
-
- // Decode rs1.
- status = DecodeIntRegsRegisterClass(MI, rs1, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode imm|rs2.
- if (isImm)
- MI.addOperand(MCOperand::createImm(simm13));
- else {
- status = DecodeIntRegsRegisterClass(MI, rs2, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
-
- if (hasAsi)
- MI.addOperand(MCOperand::createImm(asi));
-
- if (!isLoad) {
- status = DecodeRD(MI, rd, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeLoadInt(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeIntRegsRegisterClass);
-}
-
-static DecodeStatus DecodeLoadIntPair(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeIntPairRegisterClass);
-}
-
-static DecodeStatus DecodeLoadFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeLoadDFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeDFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeLoadQFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeQFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeLoadCP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeCPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeLoadCPPair(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, true,
- DecodeCPPairRegisterClass);
-}
-
-static DecodeStatus DecodeStoreInt(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeIntRegsRegisterClass);
-}
-
-static DecodeStatus DecodeStoreIntPair(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeIntPairRegisterClass);
-}
-
-static DecodeStatus DecodeStoreFP(MCInst &Inst, unsigned insn, uint64_t Address,
- const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeStoreDFP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeDFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeStoreQFP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeQFPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeStoreCP(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeCPRegsRegisterClass);
-}
-
-static DecodeStatus DecodeStoreCPPair(MCInst &Inst, unsigned insn,
- uint64_t Address, const void *Decoder) {
- return DecodeMem(Inst, insn, Address, Decoder, false,
- DecodeCPPairRegisterClass);
-}
-
-static bool tryAddingSymbolicOperand(int64_t Value, bool isBranch,
- uint64_t Address, uint64_t Offset,
- uint64_t Width, MCInst &MI,
- const void *Decoder) {
- const MCDisassembler *Dis = static_cast<const MCDisassembler*>(Decoder);
- return Dis->tryAddingSymbolicOperand(MI, Value, Address, isBranch,
- Offset, Width);
-}
-
-static DecodeStatus DecodeCall(MCInst &MI, unsigned insn,
- uint64_t Address, const void *Decoder) {
- unsigned tgt = fieldFromInstruction(insn, 0, 30);
- tgt <<= 2;
- if (!tryAddingSymbolicOperand(tgt+Address, false, Address,
- 0, 30, MI, Decoder))
- MI.addOperand(MCOperand::createImm(tgt));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeSIMM13(MCInst &MI, unsigned insn,
- uint64_t Address, const void *Decoder) {
- unsigned tgt = SignExtend32<13>(fieldFromInstruction(insn, 0, 13));
- MI.addOperand(MCOperand::createImm(tgt));
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeJMPL(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder) {
-
- unsigned rd = fieldFromInstruction(insn, 25, 5);
- unsigned rs1 = fieldFromInstruction(insn, 14, 5);
- unsigned isImm = fieldFromInstruction(insn, 13, 1);
- unsigned rs2 = 0;
- unsigned simm13 = 0;
- if (isImm)
- simm13 = SignExtend32<13>(fieldFromInstruction(insn, 0, 13));
- else
- rs2 = fieldFromInstruction(insn, 0, 5);
-
- // Decode RD.
- DecodeStatus status = DecodeIntRegsRegisterClass(MI, rd, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS1.
- status = DecodeIntRegsRegisterClass(MI, rs1, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS1 | SIMM13.
- if (isImm)
- MI.addOperand(MCOperand::createImm(simm13));
- else {
- status = DecodeIntRegsRegisterClass(MI, rs2, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeReturn(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder) {
-
- unsigned rs1 = fieldFromInstruction(insn, 14, 5);
- unsigned isImm = fieldFromInstruction(insn, 13, 1);
- unsigned rs2 = 0;
- unsigned simm13 = 0;
- if (isImm)
- simm13 = SignExtend32<13>(fieldFromInstruction(insn, 0, 13));
- else
- rs2 = fieldFromInstruction(insn, 0, 5);
-
- // Decode RS1.
- DecodeStatus status = DecodeIntRegsRegisterClass(MI, rs1, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS2 | SIMM13.
- if (isImm)
- MI.addOperand(MCOperand::createImm(simm13));
- else {
- status = DecodeIntRegsRegisterClass(MI, rs2, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeSWAP(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder) {
-
- unsigned rd = fieldFromInstruction(insn, 25, 5);
- unsigned rs1 = fieldFromInstruction(insn, 14, 5);
- unsigned isImm = fieldFromInstruction(insn, 13, 1);
- bool hasAsi = fieldFromInstruction(insn, 23, 1); // (in op3 field)
- unsigned asi = fieldFromInstruction(insn, 5, 8);
- unsigned rs2 = 0;
- unsigned simm13 = 0;
- if (isImm)
- simm13 = SignExtend32<13>(fieldFromInstruction(insn, 0, 13));
- else
- rs2 = fieldFromInstruction(insn, 0, 5);
-
- // Decode RD.
- DecodeStatus status = DecodeIntRegsRegisterClass(MI, rd, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS1.
- status = DecodeIntRegsRegisterClass(MI, rs1, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS1 | SIMM13.
- if (isImm)
- MI.addOperand(MCOperand::createImm(simm13));
- else {
- status = DecodeIntRegsRegisterClass(MI, rs2, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
-
- if (hasAsi)
- MI.addOperand(MCOperand::createImm(asi));
-
- return MCDisassembler::Success;
-}
-
-static DecodeStatus DecodeTRAP(MCInst &MI, unsigned insn, uint64_t Address,
- const void *Decoder) {
-
- unsigned rs1 = fieldFromInstruction(insn, 14, 5);
- unsigned isImm = fieldFromInstruction(insn, 13, 1);
- unsigned cc =fieldFromInstruction(insn, 25, 4);
- unsigned rs2 = 0;
- unsigned imm7 = 0;
- if (isImm)
- imm7 = fieldFromInstruction(insn, 0, 7);
- else
- rs2 = fieldFromInstruction(insn, 0, 5);
-
- // Decode RS1.
- DecodeStatus status = DecodeIntRegsRegisterClass(MI, rs1, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
-
- // Decode RS1 | IMM7.
- if (isImm)
- MI.addOperand(MCOperand::createImm(imm7));
- else {
- status = DecodeIntRegsRegisterClass(MI, rs2, Address, Decoder);
- if (status != MCDisassembler::Success)
- return status;
- }
-
- // Decode CC
- MI.addOperand(MCOperand::createImm(cc));
-
- return MCDisassembler::Success;
-}