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| //===-- ArmUnwindInfo.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_ArmUnwindInfo_h_
#define liblldb_ArmUnwindInfo_h_
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Utility/DataExtractor.h"
#include "lldb/Utility/RangeMap.h"
#include "lldb/lldb-private.h"
#include <vector>
/*
* Unwind information reader and parser for the ARM exception handling ABI
*
* Implemented based on:
* Exception Handling ABI for the ARM Architecture
* Document number: ARM IHI 0038A (current through ABI r2.09)
* Date of Issue: 25th January 2007, reissued 30th November 2012
* http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038a/IHI0038A_ehabi.pdf
*/
namespace lldb_private {
class ArmUnwindInfo {
public:
ArmUnwindInfo(ObjectFile &objfile, lldb::SectionSP &arm_exidx,
lldb::SectionSP &arm_extab);
~ArmUnwindInfo();
bool GetUnwindPlan(Target &target, const Address &addr,
UnwindPlan &unwind_plan);
private:
struct ArmExidxEntry {
ArmExidxEntry(uint32_t f, lldb::addr_t a, uint32_t d);
bool operator<(const ArmExidxEntry &other) const;
uint32_t file_address;
lldb::addr_t address;
uint32_t data;
};
const uint8_t *GetExceptionHandlingTableEntry(const Address &addr);
uint8_t GetByteAtOffset(const uint32_t *data, uint16_t offset) const;
uint64_t GetULEB128(const uint32_t *data, uint16_t &offset,
uint16_t max_offset) const;
const lldb::ByteOrder m_byte_order;
lldb::SectionSP m_arm_exidx_sp; // .ARM.exidx section
lldb::SectionSP m_arm_extab_sp; // .ARM.extab section
DataExtractor m_arm_exidx_data; // .ARM.exidx section data
DataExtractor m_arm_extab_data; // .ARM.extab section data
std::vector<ArmExidxEntry> m_exidx_entries;
};
} // namespace lldb_private
#endif // liblldb_ArmUnwindInfo_h_
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