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DisassemblerLLVMC.h
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1//===-- DisassemblerLLVMC.h -------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H
10#define LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H
11
12#include <memory>
13#include <mutex>
14#include <optional>
15#include <string>
16
17#include "lldb/Core/Address.h"
20
22
24public:
26 const char *flavor /* = NULL */);
27
29
30 // Static Functions
31 static void Initialize();
32
33 static void Terminate();
34
35 static llvm::StringRef GetPluginNameStatic() { return "llvm-mc"; }
36
38 const char *flavor);
39
40 size_t DecodeInstructions(const lldb_private::Address &base_addr,
42 lldb::offset_t data_offset, size_t num_instructions,
43 bool append, bool data_from_file) override;
44
45 // PluginInterface protocol
46 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
47
48protected:
49 friend class InstructionLLVMC;
50
52 const char *flavor) override;
53
54 bool IsValid() const;
55
56 int OpInfo(uint64_t PC, uint64_t Offset, uint64_t Size, int TagType,
57 void *TagBug);
58
59 const char *SymbolLookup(uint64_t ReferenceValue, uint64_t *ReferenceType,
60 uint64_t ReferencePC, const char **ReferenceName);
61
62 static int OpInfoCallback(void *DisInfo, uint64_t PC, uint64_t Offset,
63 uint64_t Size, int TagType, void *TagBug);
64
65 static const char *SymbolLookupCallback(void *DisInfo,
66 uint64_t ReferenceValue,
67 uint64_t *ReferenceType,
68 uint64_t ReferencePC,
69 const char **ReferenceName);
70
73 std::mutex m_mutex;
75 // Save the AArch64 ADRP instruction word and address it was at,
76 // in case the next instruction is an ADD to the same register;
77 // this is a pc-relative address calculation and we need both
78 // parts to calculate the symbolication.
80 std::optional<uint32_t> m_adrp_insn;
81
82 // Since we need to make two actual MC Disassemblers for ARM (ARM & THUMB),
83 // and there's a bit of goo to set up and own in the MC disassembler world,
84 // this class was added to manage the actual disassemblers.
85 class MCDisasmInstance;
86 std::unique_ptr<MCDisasmInstance> m_disasm_up;
87 std::unique_ptr<MCDisasmInstance> m_alternate_disasm_up;
88};
89
90#endif // LLDB_SOURCE_PLUGINS_DISASSEMBLER_LLVMC_DISASSEMBLERLLVMC_H
std::optional< uint32_t > m_adrp_insn
static const char * SymbolLookupCallback(void *DisInfo, uint64_t ReferenceValue, uint64_t *ReferenceType, uint64_t ReferencePC, const char **ReferenceName)
int OpInfo(uint64_t PC, uint64_t Offset, uint64_t Size, int TagType, void *TagBug)
const lldb_private::ExecutionContext * m_exe_ctx
const char * SymbolLookup(uint64_t ReferenceValue, uint64_t *ReferenceType, uint64_t ReferencePC, const char **ReferenceName)
std::unique_ptr< MCDisasmInstance > m_disasm_up
static llvm::StringRef GetPluginNameStatic()
static int OpInfoCallback(void *DisInfo, uint64_t PC, uint64_t Offset, uint64_t Size, int TagType, void *TagBug)
static lldb::DisassemblerSP CreateInstance(const lldb_private::ArchSpec &arch, const char *flavor)
lldb::addr_t m_adrp_address
bool FlavorValidForArchSpec(const lldb_private::ArchSpec &arch, const char *flavor) override
~DisassemblerLLVMC() override
llvm::StringRef GetPluginName() override
std::unique_ptr< MCDisasmInstance > m_alternate_disasm_up
InstructionLLVMC * m_inst
size_t DecodeInstructions(const lldb_private::Address &base_addr, const lldb_private::DataExtractor &data, lldb::offset_t data_offset, size_t num_instructions, bool append, bool data_from_file) override
A section + offset based address class.
Definition: Address.h:59
An architecture specification class.
Definition: ArchSpec.h:31
An data extractor class.
Definition: DataExtractor.h:48
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
uint64_t offset_t
Definition: lldb-types.h:83
std::shared_ptr< lldb_private::Disassembler > DisassemblerSP
Definition: lldb-forward.h:329
uint64_t addr_t
Definition: lldb-types.h:79