lldb_private::IRMemoryMap Class Reference

Encapsulates memory that may exist in the process but must also be available in the host process. More...

#include "lldb/Expression/IRMemoryMap.h"

Inheritance diagram for lldb_private::IRMemoryMap:

Classes
struct	Allocation

Public Types
enum	AllocationPolicy : uint8_t { eAllocationPolicyInvalid , eAllocationPolicyHostOnly , eAllocationPolicyMirror , eAllocationPolicyProcessOnly }

Public Member Functions
	IRMemoryMap (lldb::TargetSP target_sp)
	~IRMemoryMap ()
llvm::Expected< lldb::addr_t >	Malloc (size_t size, uint8_t alignment, uint32_t permissions, AllocationPolicy policy, bool zero_memory, AllocationPolicy *used_policy=nullptr)
void	Leak (lldb::addr_t process_address, Status &error)
void	Free (lldb::addr_t process_address, Status &error)
void	WriteMemory (lldb::addr_t process_address, const uint8_t *bytes, size_t size, Status &error)
void	WriteScalarToMemory (lldb::addr_t process_address, Scalar &scalar, size_t size, Status &error)
void	WritePointerToMemory (lldb::addr_t process_address, lldb::addr_t pointer, Status &error)
void	ReadMemory (uint8_t *bytes, lldb::addr_t process_address, size_t size, Status &error)
void	ReadScalarFromMemory (Scalar &scalar, lldb::addr_t process_address, size_t size, Status &error)
void	ReadPointerFromMemory (lldb::addr_t *address, lldb::addr_t process_address, Status &error)
bool	GetAllocSize (lldb::addr_t address, size_t &size)
void	GetMemoryData (DataExtractor &extractor, lldb::addr_t process_address, size_t size, Status &error)
lldb::ByteOrder	GetByteOrder ()
uint32_t	GetAddressByteSize ()
ExecutionContextScope *	GetBestExecutionContextScope () const
lldb::TargetSP	GetTarget ()

Protected Member Functions
lldb::ProcessWP &	GetProcessWP ()

Private Types
typedef std::map< lldb::addr_t, Allocation >	AllocationMap

Private Member Functions
lldb::addr_t	FindSpace (size_t size)
bool	ContainsHostOnlyAllocations ()
AllocationMap::iterator	FindAllocation (lldb::addr_t addr, size_t size)
bool	IntersectsAllocation (lldb::addr_t addr, size_t size) const

Static Private Member Functions
static bool	AllocationsIntersect (lldb::addr_t addr1, size_t size1, lldb::addr_t addr2, size_t size2)

Private Attributes
lldb::ProcessWP	m_process_wp
lldb::TargetWP	m_target_wp
AllocationMap	m_allocations

Detailed Description

Encapsulates memory that may exist in the process but must also be available in the host process.

This class encapsulates a group of memory objects that must be readable or writable from the host process regardless of whether the process exists. This allows the IR interpreter as well as JITted code to access the same memory. All allocations made by this class are represented as disjoint intervals.

Point queries against this group of memory objects can be made by the address in the tar at which they reside. If the inferior does not exist, allocations still get made-up addresses. If an inferior appears at some point, then those addresses need to be re-mapped.

Definition at line 35 of file IRMemoryMap.h.

Member Typedef Documentation

AllocationMap

typedef std::map<lldb::addr_t, Allocation> lldb_private::IRMemoryMap::AllocationMap

private

Definition at line 126 of file IRMemoryMap.h.

Member Enumeration Documentation

AllocationPolicy

enum lldb_private::IRMemoryMap::AllocationPolicy : uint8_t

Enumerator
eAllocationPolicyInvalid	It is an error for an allocation to have this policy.
eAllocationPolicyHostOnly	This allocation was created in the host and will never make it into the process. It is an error to create other types of allocations while such allocations exist.
eAllocationPolicyMirror	The intent is that this allocation exist both in the host and the process and have the same content in both.
eAllocationPolicyProcessOnly	The intent is that this allocation exist only in the process.

Definition at line 40 of file IRMemoryMap.h.

Constructor & Destructor Documentation

IRMemoryMap()

IRMemoryMap::IRMemoryMap

(

lldb::TargetSP

target_sp

)

Definition at line 23 of file IRMemoryMap.cpp.

References m_process_wp, and m_target_wp.

Referenced by lldb_private::IRExecutionUnit::IRExecutionUnit().

~IRMemoryMap()

IRMemoryMap::~IRMemoryMap

(

)

Definition at line 28 of file IRMemoryMap.cpp.

References lldb_private::Status::Clear(), Free(), m_allocations, and m_process_wp.

Member Function Documentation

AllocationsIntersect()

bool IRMemoryMap::AllocationsIntersect ( lldb::addr_t addr1, size_t size1, lldb::addr_t addr2, size_t size2 )

staticprivate

Definition at line 243 of file IRMemoryMap.cpp.

Referenced by IntersectsAllocation().

ContainsHostOnlyAllocations()

bool lldb_private::IRMemoryMap::ContainsHostOnlyAllocations ( )

private

FindAllocation()

IRMemoryMap::AllocationMap::iterator IRMemoryMap::FindAllocation ( lldb::addr_t addr, size_t size )

private

Definition at line 196 of file IRMemoryMap.cpp.

References LLDB_INVALID_ADDRESS, and m_allocations.

Referenced by GetAllocSize(), GetMemoryData(), ReadMemory(), WriteMemory(), and WritePointerToMemory().

FindSpace()

lldb::addr_t IRMemoryMap::FindSpace ( size_t size )

private

Definition at line 46 of file IRMemoryMap.cpp.

References lldb_private::eLazyBoolNo, lldb_private::Status::Fail(), GetAddressByteSize(), lldb_private::MemoryRegionInfo::GetExecutable(), lldb_private::MemoryRegionInfo::GetRange(), lldb_private::Range< B, S >::GetRangeBase(), lldb_private::Range< B, S >::GetRangeEnd(), lldb_private::MemoryRegionInfo::GetReadable(), lldb_private::MemoryRegionInfo::GetWritable(), LLDB_INVALID_ADDRESS, lldbassert, m_allocations, m_process_wp, m_target_wp, lldb_private::Status::Success(), and UINT32_MAX.

Referenced by Malloc().

Free()

void IRMemoryMap::Free	(	lldb::addr_t	process_address,
		Status &	error )

Definition at line 475 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, eAllocationPolicyMirror, eAllocationPolicyProcessOnly, error(), lldb_private::Expressions, lldb_private::Status::FromErrorString(), lldb_private::GetLog(), LLDB_LOGF, m_allocations, lldb_private::IRMemoryMap::Allocation::m_policy, lldb_private::IRMemoryMap::Allocation::m_process_alloc, and m_process_wp.

Referenced by lldb_private::IRExecutionUnit::CommitAllocations(), EntityResultVariable::Dematerialize(), EntityVariableBase::Dematerialize(), EntityPersistentVariable::DestroyAllocation(), lldb_private::IRExecutionUnit::FreeNow(), IRInterpreter::Interpret(), EntityResultVariable::Wipe(), EntityVariableBase::Wipe(), lldb_private::IRExecutionUnit::WriteNow(), and ~IRMemoryMap().

GetAddressByteSize()

uint32_t IRMemoryMap::GetAddressByteSize

(

)

Definition at line 272 of file IRMemoryMap.cpp.

References m_process_wp, m_target_wp, and UINT32_MAX.

Referenced by EntityResultVariable::Dematerialize(), EntityResultVariable::DumpToLog(), EntityVariableBase::DumpToLog(), FindSpace(), GetMemoryData(), EntityPersistentVariable::MakeAllocation(), EntityPersistentVariable::Materialize(), ReadPointerFromMemory(), ReadScalarFromMemory(), and WritePointerToMemory().

GetAllocSize()

bool IRMemoryMap::GetAllocSize	(	lldb::addr_t	address,
		size_t &	size )

Definition at line 518 of file IRMemoryMap.cpp.

References FindAllocation(), m_allocations, lldb_private::IRMemoryMap::Allocation::m_process_start, and lldb_private::IRMemoryMap::Allocation::m_size.

Referenced by IRInterpreter::Interpret().

GetBestExecutionContextScope()

ExecutionContextScope * IRMemoryMap::GetBestExecutionContextScope

(

)

const

Definition at line 286 of file IRMemoryMap.cpp.

References m_process_wp, and m_target_wp.

Referenced by EntityPersistentVariable::Dematerialize(), EntityResultVariable::Dematerialize(), EntityVariableBase::Dematerialize(), lldb_private::IRExecutionUnit::GetAddressByteSize(), lldb_private::IRExecutionUnit::GetArchitecture(), lldb_private::IRExecutionUnit::GetByteOrder(), lldb_private::IRExecutionUnit::GetJITModule(), EntityPersistentVariable::MakeAllocation(), EntityResultVariable::Materialize(), EntitySymbol::Materialize(), EntityVariableBase::Materialize(), and lldb_private::Materializer::Materialize().

GetByteOrder()

lldb::ByteOrder IRMemoryMap::GetByteOrder

(

)

Definition at line 258 of file IRMemoryMap.cpp.

References lldb::eByteOrderInvalid, m_process_wp, and m_target_wp.

Referenced by EntityResultVariable::Dematerialize(), EntityResultVariable::DumpToLog(), EntityVariableBase::DumpToLog(), GetMemoryData(), EntityRegister::Materialize(), ReadScalarFromMemory(), and WriteScalarToMemory().

GetMemoryData()

void IRMemoryMap::GetMemoryData	(	DataExtractor &	extractor,
		lldb::addr_t	process_address,
		size_t	size,
		Status &	error )

Definition at line 801 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, eAllocationPolicyMirror, eAllocationPolicyProcessOnly, error(), FindAllocation(), lldb_private::Status::FromErrorString(), lldb_private::Status::FromErrorStringWithFormat(), GetAddressByteSize(), GetByteOrder(), lldb_private::WritableDataBuffer::GetBytes(), lldb_private::DataBufferHeap::GetByteSize(), m_allocations, lldb_private::IRMemoryMap::Allocation::m_data, lldb_private::IRMemoryMap::Allocation::m_policy, lldb_private::IRMemoryMap::Allocation::m_process_start, and m_process_wp.

Referenced by EntityRegister::Dematerialize(), and EntityVariableBase::Dematerialize().

GetProcessWP()

lldb::ProcessWP & lldb_private::IRMemoryMap::GetProcessWP ( )

inlineprotected

Definition at line 92 of file IRMemoryMap.h.

References m_process_wp.

Referenced by lldb_private::IRExecutionUnit::GetRunnableInfo(), and WritePointerToMemory().

GetTarget()

lldb::TargetSP lldb_private::IRMemoryMap::GetTarget ( )

inline

Definition at line 86 of file IRMemoryMap.h.

References m_target_wp.

IntersectsAllocation()

bool IRMemoryMap::IntersectsAllocation ( lldb::addr_t addr, size_t size ) const

private

Definition at line 214 of file IRMemoryMap.cpp.

References AllocationsIntersect(), LLDB_INVALID_ADDRESS, and m_allocations.

Leak()

void IRMemoryMap::Leak	(	lldb::addr_t	process_address,
		Status &	error )

Definition at line 460 of file IRMemoryMap.cpp.

References error(), lldb_private::Status::FromErrorString(), m_allocations, and lldb_private::IRMemoryMap::Allocation::m_leak.

Referenced by EntityPersistentVariable::MakeAllocation().

Malloc()

llvm::Expected< lldb::addr_t > IRMemoryMap::Malloc	(	size_t	size,
		uint8_t	alignment,
		uint32_t	permissions,
		AllocationPolicy	policy,
		bool	zero_memory,
		AllocationPolicy *	used_policy = nullptr )

Definition at line 320 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, eAllocationPolicyMirror, eAllocationPolicyProcessOnly, error(), lldb_private::Expressions, FindSpace(), lldb_private::GetLog(), LLDB_INVALID_ADDRESS, LLDB_LOGF, m_allocations, m_process_wp, and WriteMemory().

Referenced by lldb_private::IRExecutionUnit::CommitOneAllocation(), EntityPersistentVariable::MakeAllocation(), EntityResultVariable::Materialize(), EntityVariableBase::Materialize(), and lldb_private::IRExecutionUnit::WriteNow().

ReadMemory()

void IRMemoryMap::ReadMemory	(	uint8_t *	bytes,
		lldb::addr_t	process_address,
		size_t	size,
		Status &	error )

Definition at line 654 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, eAllocationPolicyMirror, eAllocationPolicyProcessOnly, error(), lldb_private::Expressions, FindAllocation(), lldb_private::Status::FromErrorString(), lldb_private::WritableDataBuffer::GetBytes(), lldb_private::DataBufferHeap::GetByteSize(), lldb_private::GetLog(), LLDB_LOGF, m_allocations, lldb_private::IRMemoryMap::Allocation::m_data, lldb_private::IRMemoryMap::Allocation::m_policy, lldb_private::IRMemoryMap::Allocation::m_process_start, m_process_wp, lldb_private::IRMemoryMap::Allocation::m_size, and m_target_wp.

Referenced by EntityPersistentVariable::Dematerialize(), EntityResultVariable::Dematerialize(), EntityPersistentVariable::DumpToLog(), EntityRegister::DumpToLog(), EntityResultVariable::DumpToLog(), EntitySymbol::DumpToLog(), EntityVariableBase::DumpToLog(), lldb_private::IRExecutionUnit::GetRunnableInfo(), IRInterpreter::Interpret(), ReadScalarFromMemory(), and lldb_private::IRExecutionUnit::WriteNow().

ReadPointerFromMemory()

void IRMemoryMap::ReadPointerFromMemory	(	lldb::addr_t *	address,
		lldb::addr_t	process_address,
		Status &	error )

Definition at line 786 of file IRMemoryMap.cpp.

References error(), GetAddressByteSize(), ReadScalarFromMemory(), and lldb_private::Scalar::ULongLong().

Referenced by EntityPersistentVariable::Dematerialize(), EntityResultVariable::Dematerialize(), EntityPersistentVariable::DumpToLog(), and IRInterpreter::Interpret().

ReadScalarFromMemory()

void IRMemoryMap::ReadScalarFromMemory	(	Scalar &	scalar,
		lldb::addr_t	process_address,
		size_t	size,
		Status &	error )

Definition at line 746 of file IRMemoryMap.cpp.

References error(), lldb_private::Status::FromErrorString(), lldb_private::Status::FromErrorStringWithFormat(), GetAddressByteSize(), GetByteOrder(), lldb_private::WritableDataBuffer::GetBytes(), lldb_private::DataBufferHeap::GetByteSize(), lldb_private::DataExtractor::GetU16(), lldb_private::DataExtractor::GetU32(), lldb_private::DataExtractor::GetU64(), lldb_private::DataExtractor::GetU8(), and ReadMemory().

Referenced by ReadPointerFromMemory().

WriteMemory()

void IRMemoryMap::WriteMemory	(	lldb::addr_t	process_address,
		const uint8_t *	bytes,
		size_t	size,
		Status &	error )

Definition at line 540 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, eAllocationPolicyMirror, eAllocationPolicyProcessOnly, error(), lldb_private::Expressions, FindAllocation(), lldb_private::Status::FromErrorString(), lldb_private::WritableDataBuffer::GetBytes(), lldb_private::DataBufferHeap::GetByteSize(), lldb_private::GetLog(), LLDB_LOGF, m_allocations, lldb_private::IRMemoryMap::Allocation::m_data, lldb_private::IRMemoryMap::Allocation::m_policy, lldb_private::IRMemoryMap::Allocation::m_process_start, m_process_wp, and lldb_private::IRMemoryMap::Allocation::m_size.

Referenced by IRInterpreter::Interpret(), EntityPersistentVariable::MakeAllocation(), Malloc(), EntityRegister::Materialize(), EntityVariableBase::Materialize(), lldb_private::IRExecutionUnit::WriteData(), lldb_private::IRExecutionUnit::WriteNow(), and WriteScalarToMemory().

WritePointerToMemory()

void IRMemoryMap::WritePointerToMemory	(	lldb::addr_t	process_address,
		lldb::addr_t	pointer,
		Status &	error )

Only ask the Process to fix pointer if the address belongs to the process. An address belongs to the process if the Allocation policy is not eAllocationPolicyHostOnly.

Definition at line 636 of file IRMemoryMap.cpp.

References eAllocationPolicyHostOnly, error(), FindAllocation(), GetAddressByteSize(), GetProcessWP(), m_allocations, and WriteScalarToMemory().

Referenced by IRInterpreter::Interpret(), EntityResultVariable::Materialize(), EntitySymbol::Materialize(), and EntityVariableBase::Materialize().

WriteScalarToMemory()

void IRMemoryMap::WriteScalarToMemory	(	lldb::addr_t	process_address,
		Scalar &	scalar,
		size_t	size,
		Status &	error )

Definition at line 613 of file IRMemoryMap.cpp.

References error(), lldb_private::Status::FromErrorString(), lldb_private::Scalar::GetAsMemoryData(), GetByteOrder(), lldb_private::Scalar::GetByteSize(), UINT32_MAX, and WriteMemory().

Referenced by EntityPersistentVariable::Materialize(), and WritePointerToMemory().

Member Data Documentation

m_allocations

AllocationMap lldb_private::IRMemoryMap::m_allocations

private

Definition at line 127 of file IRMemoryMap.h.

Referenced by FindAllocation(), FindSpace(), Free(), GetAllocSize(), GetMemoryData(), IntersectsAllocation(), Leak(), Malloc(), ReadMemory(), WriteMemory(), WritePointerToMemory(), and ~IRMemoryMap().

m_process_wp

lldb::ProcessWP lldb_private::IRMemoryMap::m_process_wp

private

Definition at line 124 of file IRMemoryMap.h.

Referenced by FindSpace(), Free(), GetAddressByteSize(), GetBestExecutionContextScope(), GetByteOrder(), GetMemoryData(), GetProcessWP(), IRMemoryMap(), Malloc(), ReadMemory(), WriteMemory(), and ~IRMemoryMap().

m_target_wp

lldb::TargetWP lldb_private::IRMemoryMap::m_target_wp

private

Definition at line 125 of file IRMemoryMap.h.

Referenced by FindSpace(), GetAddressByteSize(), GetBestExecutionContextScope(), GetByteOrder(), GetTarget(), IRMemoryMap(), and ReadMemory().

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

• IRMemoryMap.h
• IRMemoryMap.cpp