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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.h
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//===---EmulateInstructionLoongArch.h--------------------------------------===//

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//

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

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// See https://llvm.org/LICENSE.txt for license information.

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

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//

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//===----------------------------------------------------------------------===//

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#ifndef LLDB_SOURCE_PLUGINS_INSTRUCTION_LOONGARCH_EMULATEINSTRUCTIONLOONGARCH_H

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#define LLDB_SOURCE_PLUGINS_INSTRUCTION_LOONGARCH_EMULATEINSTRUCTIONLOONGARCH_H

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#include "lldb/Core/EmulateInstruction.h"

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#include "lldb/Interpreter/OptionValue.h"

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#include "lldb/Utility/Log.h"

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#include "lldb/Utility/Status.h"

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#include <optional>

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namespace lldb_private {

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class EmulateInstructionLoongArch : public EmulateInstruction {

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public:

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  static llvm::StringRef GetPluginNameStatic() { return "LoongArch"; }

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  static llvm::StringRef GetPluginDescriptionStatic() {

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    return "Emulate instructions for the LoongArch architecture.";

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  }

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  static bool SupportsThisInstructionType(InstructionType inst_type) {

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    return inst_type == eInstructionTypePCModifying;

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  }

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  static bool SupportsThisArch(const ArchSpec &arch);

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  static lldb_private::EmulateInstruction *

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  CreateInstance(const lldb_private::ArchSpec &arch, InstructionType inst_type);

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  static void Initialize();

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  static void Terminate();

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public:

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  EmulateInstructionLoongArch(const ArchSpec &arch) : EmulateInstruction(arch) {

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    m_arch_subtype = arch.GetMachine();

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  }

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  llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }

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  bool SupportsEmulatingInstructionsOfType(InstructionType inst_type) override {

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    return SupportsThisInstructionType(inst_type);

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  }

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  bool SetTargetTriple(const ArchSpec &arch) override;

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  bool ReadInstruction() override;

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  bool EvaluateInstruction(uint32_t options) override;

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  bool TestEmulation(Stream &out_stream, ArchSpec &arch,

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                     OptionValueDictionary *test_data) override;

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  std::optional<RegisterInfo> GetRegisterInfo(lldb::RegisterKind reg_kind,

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                                              uint32_t reg_num) override;

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  lldb::addr_t ReadPC(bool *success);

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  bool WritePC(lldb::addr_t pc);

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  bool IsLoongArch64() { return m_arch_subtype == llvm::Triple::loongarch64; }

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  bool TestExecute(uint32_t inst);

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private:

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  struct Opcode {

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    uint32_t mask;

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    uint32_t value;

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    bool (EmulateInstructionLoongArch::*callback)(uint32_t opcode);

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    const char *name;

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  };

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  llvm::Triple::ArchType m_arch_subtype;

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  Opcode *GetOpcodeForInstruction(uint32_t inst);

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  bool EmulateBEQZ(uint32_t inst);

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  bool EmulateBNEZ(uint32_t inst);

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  bool EmulateBCEQZ(uint32_t inst);

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  bool EmulateBCNEZ(uint32_t inst);

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  bool EmulateJIRL(uint32_t inst);

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  bool EmulateB(uint32_t inst);

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  bool EmulateBL(uint32_t inst);

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  bool EmulateBEQ(uint32_t inst);

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  bool EmulateBNE(uint32_t inst);

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  bool EmulateBLT(uint32_t inst);

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  bool EmulateBGE(uint32_t inst);

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  bool EmulateBLTU(uint32_t inst);

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  bool EmulateBGEU(uint32_t inst);

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  bool EmulateNonJMP(uint32_t inst);

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  bool EmulateBEQZ64(uint32_t inst);

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  bool EmulateBNEZ64(uint32_t inst);

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  bool EmulateBCEQZ64(uint32_t inst);

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  bool EmulateBCNEZ64(uint32_t inst);

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  bool EmulateJIRL64(uint32_t inst);

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  bool EmulateB64(uint32_t inst);

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  bool EmulateBL64(uint32_t inst);

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  bool EmulateBEQ64(uint32_t inst);

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  bool EmulateBNE64(uint32_t inst);

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  bool EmulateBLT64(uint32_t inst);

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  bool EmulateBGE64(uint32_t inst);

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  bool EmulateBLTU64(uint32_t inst);

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  bool EmulateBGEU64(uint32_t inst);

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};

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} // namespace lldb_private

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#endif // LLDB_SOURCE_PLUGINS_INSTRUCTION_LOONGARCH_EMULATEINSTRUCTIONLOONGARCH_H

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