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lldb_private::CompactUnwindInfo Class Reference

#include <CompactUnwindInfo.h>

Classes

struct  FunctionInfo
 
struct  UnwindHeader
 
struct  UnwindIndex
 

Public Member Functions

 CompactUnwindInfo (ObjectFile &objfile, lldb::SectionSP &section)
 
 ~CompactUnwindInfo ()
 
bool GetUnwindPlan (Target &target, Address addr, UnwindPlan &unwind_plan)
 
bool IsValid (const lldb::ProcessSP &process_sp)
 

Private Member Functions

void ScanIndex (const lldb::ProcessSP &process_sp)
 
bool GetCompactUnwindInfoForFunction (Target &target, Address address, FunctionInfo &unwind_info)
 
lldb::offset_t BinarySearchRegularSecondPage (uint32_t entry_page_offset, uint32_t entry_count, uint32_t function_offset, uint32_t *entry_func_start_offset, uint32_t *entry_func_end_offset)
 
uint32_t BinarySearchCompressedSecondPage (uint32_t entry_page_offset, uint32_t entry_count, uint32_t function_offset_to_find, uint32_t function_offset_base, uint32_t *entry_func_start_offset, uint32_t *entry_func_end_offset)
 
uint32_t GetLSDAForFunctionOffset (uint32_t lsda_offset, uint32_t lsda_count, uint32_t function_offset)
 
bool CreateUnwindPlan_x86_64 (Target &target, FunctionInfo &function_info, UnwindPlan &unwind_plan, Address pc_or_function_start)
 
bool CreateUnwindPlan_i386 (Target &target, FunctionInfo &function_info, UnwindPlan &unwind_plan, Address pc_or_function_start)
 
bool CreateUnwindPlan_arm64 (Target &target, FunctionInfo &function_info, UnwindPlan &unwind_plan, Address pc_or_function_start)
 
bool CreateUnwindPlan_armv7 (Target &target, FunctionInfo &function_info, UnwindPlan &unwind_plan, Address pc_or_function_start)
 

Private Attributes

ObjectFile & m_objfile
 
lldb::SectionSP m_section_sp
 
lldb::WritableDataBufferSP m_section_contents_if_encrypted
 
std::mutex m_mutex
 
std::vector< UnwindIndex > m_indexes
 
LazyBool m_indexes_computed
 
DataExtractor m_unwindinfo_data
 
bool m_unwindinfo_data_computed
 
UnwindHeader m_unwind_header
 

Detailed Description

Definition at line 36 of file CompactUnwindInfo.h.

Constructor & Destructor Documentation

◆ CompactUnwindInfo()

CompactUnwindInfo::CompactUnwindInfo ( ObjectFile &  objfile,
lldb::SectionSP &  section 
)

Definition at line 163 of file CompactUnwindInfo.cpp.

◆ ~CompactUnwindInfo()

CompactUnwindInfo::~CompactUnwindInfo ( )
default

Member Function Documentation

◆ BinarySearchCompressedSecondPage()

uint32_t CompactUnwindInfo::BinarySearchCompressedSecondPage ( uint32_t  entry_page_offset,
uint32_t  entry_count,
uint32_t  function_offset_to_find,
uint32_t  function_offset_base,
uint32_t *  entry_func_start_offset,
uint32_t *  entry_func_end_offset 
)
private

Definition at line 451 of file CompactUnwindInfo.cpp.

References lldb_private::DataExtractor::GetU32(), m_unwindinfo_data, UINT32_MAX, UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX, and UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET.

Referenced by GetCompactUnwindInfoForFunction().

◆ BinarySearchRegularSecondPage()

lldb::offset_t CompactUnwindInfo::BinarySearchRegularSecondPage ( uint32_t  entry_page_offset,
uint32_t  entry_count,
uint32_t  function_offset,
uint32_t *  entry_func_start_offset,
uint32_t *  entry_func_end_offset 
)
private

Definition at line 411 of file CompactUnwindInfo.cpp.

References lldb_private::DataExtractor::GetU32(), LLDB_INVALID_OFFSET, and m_unwindinfo_data.

Referenced by GetCompactUnwindInfoForFunction().

◆ CreateUnwindPlan_arm64()

bool CompactUnwindInfo::CreateUnwindPlan_arm64 ( Target &  target,
FunctionInfo &  function_info,
UnwindPlan &  unwind_plan,
Address  pc_or_function_start 
)
private

Definition at line 1303 of file CompactUnwindInfo.cpp.

References lldb_private::UnwindPlan::AppendRow(), lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb::eRegisterKindEHFrame, EXTRACT_BITS, lldb_private::CompactUnwindInfo::FunctionInfo::lsda_address, lldb_private::CompactUnwindInfo::FunctionInfo::personality_ptr_address, lldb_private::UnwindPlan::SetLSDAAddress(), lldb_private::UnwindPlan::SetPersonalityFunctionPtr(), lldb_private::UnwindPlan::SetRegisterKind(), lldb_private::UnwindPlan::SetSourcedFromCompiler(), lldb_private::UnwindPlan::SetSourceName(), lldb_private::UnwindPlan::SetUnwindPlanForSignalTrap(), and lldb_private::UnwindPlan::SetUnwindPlanValidAtAllInstructions().

Referenced by GetUnwindPlan().

◆ CreateUnwindPlan_armv7()

bool CompactUnwindInfo::CreateUnwindPlan_armv7 ( Target &  target,
FunctionInfo &  function_info,
UnwindPlan &  unwind_plan,
Address  pc_or_function_start 
)
private

Definition at line 1437 of file CompactUnwindInfo.cpp.

References lldb_private::UnwindPlan::AppendRow(), arm_d10, arm_d12, arm_d14, arm_d8, arm_pc, arm_r10, arm_r11, arm_r12, arm_r4, arm_r5, arm_r6, arm_r7, arm_r8, arm_r9, arm_sp, lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb::eRegisterKindEHFrame, EXTRACT_BITS, lldb_private::CompactUnwindInfo::FunctionInfo::lsda_address, lldb_private::CompactUnwindInfo::FunctionInfo::personality_ptr_address, lldb_private::UnwindPlan::SetLSDAAddress(), lldb_private::UnwindPlan::SetPersonalityFunctionPtr(), lldb_private::UnwindPlan::SetRegisterKind(), lldb_private::UnwindPlan::SetSourcedFromCompiler(), lldb_private::UnwindPlan::SetSourceName(), lldb_private::UnwindPlan::SetUnwindPlanForSignalTrap(), and lldb_private::UnwindPlan::SetUnwindPlanValidAtAllInstructions().

Referenced by GetUnwindPlan().

◆ CreateUnwindPlan_i386()

bool CompactUnwindInfo::CreateUnwindPlan_i386 ( Target &  target,
FunctionInfo &  function_info,
UnwindPlan &  unwind_plan,
Address  pc_or_function_start 
)
private

Definition at line 1006 of file CompactUnwindInfo.cpp.

References lldb_private::UnwindPlan::AppendRow(), lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb::eRegisterKindEHFrame, error(), EXTRACT_BITS, lldb_private::Address::GetLoadAddress(), lldb_private::Target::GetProcessSP(), lldb_private::ObjectFile::GetSectionList(), lldb_private::CompactUnwindInfo::FunctionInfo::lsda_address, m_objfile, lldb_private::CompactUnwindInfo::FunctionInfo::personality_ptr_address, lldb_private::UnwindPlan::SetLSDAAddress(), lldb_private::UnwindPlan::SetPersonalityFunctionPtr(), lldb_private::UnwindPlan::SetRegisterKind(), lldb_private::UnwindPlan::SetSourcedFromCompiler(), lldb_private::UnwindPlan::SetSourceName(), lldb_private::UnwindPlan::SetUnwindPlanForSignalTrap(), lldb_private::UnwindPlan::SetUnwindPlanValidAtAllInstructions(), lldb_private::Address::Slide(), translate_to_eh_frame_regnum_i386(), lldb_private::UNWIND_X86_REG_EBP, lldb_private::UNWIND_X86_REG_EBX, lldb_private::UNWIND_X86_REG_ECX, lldb_private::UNWIND_X86_REG_EDI, lldb_private::UNWIND_X86_REG_EDX, lldb_private::UNWIND_X86_REG_ESI, lldb_private::UNWIND_X86_REG_NONE, and lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_start.

Referenced by GetUnwindPlan().

◆ CreateUnwindPlan_x86_64()

bool CompactUnwindInfo::CreateUnwindPlan_x86_64 ( Target &  target,
FunctionInfo &  function_info,
UnwindPlan &  unwind_plan,
Address  pc_or_function_start 
)
private

Definition at line 734 of file CompactUnwindInfo.cpp.

References lldb_private::UnwindPlan::AppendRow(), lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb::eRegisterKindEHFrame, error(), EXTRACT_BITS, lldb_private::Address::GetLoadAddress(), lldb_private::Target::GetProcessSP(), lldb_private::ObjectFile::GetSectionList(), lldb_private::CompactUnwindInfo::FunctionInfo::lsda_address, m_objfile, lldb_private::CompactUnwindInfo::FunctionInfo::personality_ptr_address, lldb_private::UnwindPlan::SetLSDAAddress(), lldb_private::UnwindPlan::SetPersonalityFunctionPtr(), lldb_private::UnwindPlan::SetRegisterKind(), lldb_private::UnwindPlan::SetSourcedFromCompiler(), lldb_private::UnwindPlan::SetSourceName(), lldb_private::UnwindPlan::SetUnwindPlanForSignalTrap(), lldb_private::UnwindPlan::SetUnwindPlanValidAtAllInstructions(), lldb_private::Address::Slide(), translate_to_eh_frame_regnum_x86_64(), lldb_private::UNWIND_X86_64_REG_NONE, lldb_private::UNWIND_X86_64_REG_R12, lldb_private::UNWIND_X86_64_REG_R13, lldb_private::UNWIND_X86_64_REG_R14, lldb_private::UNWIND_X86_64_REG_R15, lldb_private::UNWIND_X86_64_REG_RBP, lldb_private::UNWIND_X86_64_REG_RBX, and lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_start.

Referenced by GetUnwindPlan().

◆ GetCompactUnwindInfoForFunction()

bool CompactUnwindInfo::GetCompactUnwindInfoForFunction ( Target &  target,
Address  address,
FunctionInfo &  unwind_info 
)
private

Definition at line 491 of file CompactUnwindInfo.cpp.

References BinarySearchCompressedSecondPage(), BinarySearchRegularSecondPage(), lldb_private::Address::Clear(), lldb_private::CompactUnwindInfo::UnwindHeader::common_encodings_array_count, lldb_private::CompactUnwindInfo::UnwindHeader::common_encodings_array_offset, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb::eSectionTypeCode, EXTRACT_BITS, lldb_private::SectionList::FindSectionByType(), lldb_private::CompactUnwindInfo::UnwindIndex::function_offset, lldb_private::ObjectFile::GetBaseAddress(), lldb_private::Address::GetFileAddress(), GetLSDAForFunctionOffset(), lldb_private::Target::GetProcessSP(), lldb_private::ObjectFile::GetSectionList(), lldb_private::DataExtractor::GetU16(), lldb_private::DataExtractor::GetU32(), IsValid(), LLDB_INVALID_ADDRESS, LLDB_INVALID_OFFSET, lldb_private::CompactUnwindInfo::FunctionInfo::lsda_address, m_indexes, m_objfile, m_unwind_header, m_unwindinfo_data, lldb_private::CompactUnwindInfo::UnwindHeader::personality_array_count, lldb_private::CompactUnwindInfo::UnwindHeader::personality_array_offset, lldb_private::CompactUnwindInfo::FunctionInfo::personality_ptr_address, lldb_private::Address::ResolveAddressUsingFileSections(), UINT32_MAX, UNWIND_SECOND_LEVEL_COMPRESSED, UNWIND_SECOND_LEVEL_REGULAR, lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_end, and lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_start.

Referenced by GetUnwindPlan().

◆ GetLSDAForFunctionOffset()

uint32_t CompactUnwindInfo::GetLSDAForFunctionOffset ( uint32_t  lsda_offset,
uint32_t  lsda_count,
uint32_t  function_offset 
)
private

Definition at line 382 of file CompactUnwindInfo.cpp.

References lldb_private::DataExtractor::GetU32(), and m_unwindinfo_data.

Referenced by GetCompactUnwindInfoForFunction().

◆ GetUnwindPlan()

bool CompactUnwindInfo::GetUnwindPlan ( Target &  target,
Address  addr,
UnwindPlan &  unwind_plan 
)

Definition at line 173 of file CompactUnwindInfo.cpp.

References CreateUnwindPlan_arm64(), CreateUnwindPlan_armv7(), CreateUnwindPlan_i386(), CreateUnwindPlan_x86_64(), lldb_private::Address::Dump(), lldb_private::Address::DumpStyleFileAddress, lldb_private::Address::DumpStyleResolvedDescriptionNoFunctionArguments, lldb_private::CompactUnwindInfo::FunctionInfo::encoding, lldb_private::ObjectFile::GetArchitecture(), lldb_private::ObjectFile::GetBaseAddress(), GetCompactUnwindInfoForFunction(), lldb_private::StreamString::GetData(), lldb_private::Address::GetFileAddress(), lldb_private::GetLog(), lldb_private::Target::GetProcessSP(), lldb_private::ObjectFile::GetSectionList(), lldb_private::Log::GetVerbose(), IsValid(), LLDB_LOGF, m_objfile, lldb_private::UnwindPlan::SetPlanValidAddressRange(), lldb_private::Unwind, lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_end, and lldb_private::CompactUnwindInfo::FunctionInfo::valid_range_offset_start.

Referenced by lldb_private::FuncUnwinders::GetCompactUnwindUnwindPlan().

◆ IsValid()

bool CompactUnwindInfo::IsValid ( const lldb::ProcessSP &  process_sp)

Definition at line 233 of file CompactUnwindInfo.cpp.

References lldb_private::eLazyBoolYes, m_indexes_computed, m_section_sp, m_unwindinfo_data_computed, and ScanIndex().

Referenced by GetCompactUnwindInfoForFunction(), and GetUnwindPlan().

◆ ScanIndex()

void CompactUnwindInfo::ScanIndex ( const lldb::ProcessSP &  process_sp)
private

Definition at line 245 of file CompactUnwindInfo.cpp.

References lldb_private::CompactUnwindInfo::UnwindHeader::common_encodings_array_count, lldb_private::CompactUnwindInfo::UnwindHeader::common_encodings_array_offset, lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, error(), lldb_private::CompactUnwindInfo::UnwindIndex::function_offset, lldb_private::ObjectFile::GetArchitecture(), lldb_private::DataExtractor::GetByteSize(), lldb_private::GetLog(), lldb_private::ModuleChild::GetModule(), lldb_private::DataExtractor::GetU32(), lldb_private::CompactUnwindInfo::UnwindIndex::lsda_array_start, m_indexes, m_indexes_computed, m_mutex, m_objfile, m_section_contents_if_encrypted, m_section_sp, m_unwind_header, m_unwindinfo_data, m_unwindinfo_data_computed, lldb_private::CompactUnwindInfo::UnwindHeader::personality_array_count, lldb_private::CompactUnwindInfo::UnwindHeader::personality_array_offset, lldb_private::ObjectFile::ReadSectionData(), lldb_private::Debugger::ReportError(), lldb_private::CompactUnwindInfo::UnwindIndex::second_level, lldb_private::CompactUnwindInfo::UnwindIndex::sentinal_entry, lldb_private::DataExtractor::SetAddressByteSize(), lldb_private::DataExtractor::SetByteOrder(), lldb_private::DataExtractor::SetData(), lldb_private::Unwind, and lldb_private::CompactUnwindInfo::UnwindHeader::version.

Referenced by IsValid().

Member Data Documentation

◆ m_indexes

std::vector<UnwindIndex> lldb_private::CompactUnwindInfo::m_indexes
private

Definition at line 147 of file CompactUnwindInfo.h.

Referenced by GetCompactUnwindInfoForFunction(), and ScanIndex().

◆ m_indexes_computed

LazyBool lldb_private::CompactUnwindInfo::m_indexes_computed
private

Definition at line 149 of file CompactUnwindInfo.h.

Referenced by IsValid(), and ScanIndex().

◆ m_mutex

std::mutex lldb_private::CompactUnwindInfo::m_mutex
private

Definition at line 146 of file CompactUnwindInfo.h.

Referenced by ScanIndex().

◆ m_objfile

ObjectFile& lldb_private::CompactUnwindInfo::m_objfile
private

Definition at line 139 of file CompactUnwindInfo.h.

Referenced by CreateUnwindPlan_i386(), CreateUnwindPlan_x86_64(), GetCompactUnwindInfoForFunction(), GetUnwindPlan(), and ScanIndex().

◆ m_section_contents_if_encrypted

lldb::WritableDataBufferSP lldb_private::CompactUnwindInfo::m_section_contents_if_encrypted
private

Definition at line 142 of file CompactUnwindInfo.h.

Referenced by ScanIndex().

◆ m_section_sp

lldb::SectionSP lldb_private::CompactUnwindInfo::m_section_sp
private

Definition at line 140 of file CompactUnwindInfo.h.

Referenced by IsValid(), and ScanIndex().

◆ m_unwind_header

UnwindHeader lldb_private::CompactUnwindInfo::m_unwind_header
private

Definition at line 158 of file CompactUnwindInfo.h.

Referenced by GetCompactUnwindInfoForFunction(), and ScanIndex().

◆ m_unwindinfo_data

DataExtractor lldb_private::CompactUnwindInfo::m_unwindinfo_data
private

Definition at line 154 of file CompactUnwindInfo.h.

Referenced by BinarySearchCompressedSecondPage(), BinarySearchRegularSecondPage(), GetCompactUnwindInfoForFunction(), GetLSDAForFunctionOffset(), and ScanIndex().

◆ m_unwindinfo_data_computed

bool lldb_private::CompactUnwindInfo::m_unwindinfo_data_computed
private

Definition at line 155 of file CompactUnwindInfo.h.

Referenced by IsValid(), and ScanIndex().

The documentation for this class was generated from the following files:
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