| // Copyright 2011 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COURGETTE_DISASSEMBLER_ELF_32_X86_H_ |
| #define COURGETTE_DISASSEMBLER_ELF_32_X86_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <map> |
| |
| #include "courgette/disassembler_elf_32.h" |
| #include "courgette/types_elf.h" |
| |
| namespace courgette { |
| |
| class InstructionReceptor; |
| |
| class DisassemblerElf32X86 : public DisassemblerElf32 { |
| public: |
| // Returns true if a valid executable is detected using only quick checks. |
| static bool QuickDetect(const uint8_t* start, size_t length) { |
| return DisassemblerElf32::QuickDetect(start, length, EM_386); |
| } |
| |
| class TypedRVAX86 : public TypedRVA { |
| public: |
| explicit TypedRVAX86(RVA rva) : TypedRVA(rva) { } |
| ~TypedRVAX86() override { } |
| |
| // TypedRVA interfaces. |
| CheckBool ComputeRelativeTarget(const uint8_t* op_pointer) override; |
| CheckBool EmitInstruction(Label* label, |
| InstructionReceptor* receptor) override; |
| uint16_t op_size() const override; |
| }; |
| |
| DisassemblerElf32X86(const uint8_t* start, size_t length); |
| |
| DisassemblerElf32X86(const DisassemblerElf32X86&) = delete; |
| DisassemblerElf32X86& operator=(const DisassemblerElf32X86&) = delete; |
| |
| ~DisassemblerElf32X86() override { } |
| |
| // DisassemblerElf32 interfaces. |
| ExecutableType kind() const override { return EXE_ELF_32_X86; } |
| e_machine_values ElfEM() const override { return EM_386; } |
| |
| protected: |
| // DisassemblerElf32 interfaces. |
| [[nodiscard]] CheckBool RelToRVA(Elf32_Rel rel, RVA* result) const override; |
| [[nodiscard]] CheckBool ParseRelocationSection( |
| const Elf32_Shdr* section_header, |
| InstructionReceptor* receptor) const override; |
| [[nodiscard]] CheckBool ParseRel32RelocsFromSection( |
| const Elf32_Shdr* section) override; |
| |
| #if COURGETTE_HISTOGRAM_TARGETS |
| std::map<RVA, int> rel32_target_rvas_; |
| #endif |
| }; |
| |
| } // namespace courgette |
| |
| #endif // COURGETTE_DISASSEMBLER_ELF_32_X86_H_ |