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// Copyright 2013 The Chromium Authors. All rights reserved.
// 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_ARM_H_
#define COURGETTE_DISASSEMBLER_ELF_32_ARM_H_
#include "base/basictypes.h"
#include "courgette/disassembler_elf_32.h"
#include "courgette/memory_allocator.h"
#include "courgette/types_elf.h"
namespace courgette {
class AssemblyProgram;
enum ARM_RVA {
ARM_OFF8,
ARM_OFF11,
ARM_OFF24,
ARM_OFF25,
ARM_OFF21,
};
class DisassemblerElf32ARM : public DisassemblerElf32 {
public:
class TypedRVAARM : public TypedRVA {
public:
TypedRVAARM(ARM_RVA type, RVA rva) : TypedRVA(rva), type_(type) { }
uint16 c_op() const {
return c_op_;
}
virtual CheckBool ComputeRelativeTarget(const uint8* op_pointer);
virtual CheckBool EmitInstruction(AssemblyProgram* program,
RVA target_rva);
virtual uint16 op_size() const;
private:
ARM_RVA type_;
uint16 c_op_; // set by ComputeRelativeTarget()
const uint8* arm_op_;
};
explicit DisassemblerElf32ARM(const void* start, size_t length);
virtual ExecutableType kind() { return EXE_ELF_32_ARM; }
virtual e_machine_values ElfEM() { return EM_ARM; }
static CheckBool Compress(ARM_RVA type, uint32 arm_op, RVA rva,
uint16* c_op /* out */, uint32* addr /* out */);
static CheckBool Decompress(ARM_RVA type, uint16 c_op, uint32 addr,
uint32* arm_op /* out */);
protected:
virtual CheckBool RelToRVA(Elf32_Rel rel, RVA* result)
const WARN_UNUSED_RESULT;
virtual CheckBool ParseRelocationSection(
const Elf32_Shdr *section_header,
AssemblyProgram* program) WARN_UNUSED_RESULT;
virtual CheckBool ParseRel32RelocsFromSection(
const Elf32_Shdr* section) WARN_UNUSED_RESULT;
DISALLOW_COPY_AND_ASSIGN(DisassemblerElf32ARM);
};
} // namespace courgette
#endif // COURGETTE_DISASSEMBLER_ELF_32_ARM_H_
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