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// 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_