| //===-- 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 LLDB_SYMBOL_ARMUNWINDINFO_H |
| #define LLDB_SYMBOL_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 // LLDB_SYMBOL_ARMUNWINDINFO_H |