lldb_private::ArchitectureArm Class Reference

#include <ArchitectureArm.h>

Inheritance diagram for lldb_private::ArchitectureArm:

Public Member Functions
llvm::StringRef	GetPluginName () override
void	OverrideStopInfo (Thread &thread) const override
	This is currently intended to handle cases where a program stops at an instruction that won't get executed and it allows the stop reason, like "breakpoint hit", to be replaced with a different stop reason like "no stop reason".
lldb::addr_t	GetCallableLoadAddress (lldb::addr_t load_addr, AddressClass addr_class) const override
	Get load_addr as a callable code load address for this target.
lldb::addr_t	GetOpcodeLoadAddress (lldb::addr_t load_addr, AddressClass addr_class) const override
	Get load_addr as an opcode for this target.
lldb::UnwindPlanSP	GetArchitectureUnwindPlan (lldb_private::Thread &thread, lldb_private::RegisterContextUnwind *regctx, std::shared_ptr< const UnwindPlan > current_unwindplan) override
	Return an UnwindPlan that allows architecture-defined rules for finding saved registers, given a particular set of register values.
Public Member Functions inherited from lldb_private::Architecture
virtual size_t	GetBytesToSkip (Symbol &func, const Address &curr_addr) const
	This method is used to get the number of bytes that should be skipped, from function start address, to reach the first instruction after the prologue.
virtual void	AdjustBreakpointAddress (const Symbol &func, Address &addr) const
	Adjust function breakpoint address, if needed.
virtual lldb::addr_t	GetBreakableLoadAddress (lldb::addr_t addr, Target &target) const
virtual const MemoryTagManager *	GetMemoryTagManager () const
virtual bool	RegisterWriteCausesReconfigure (const llvm::StringRef name) const
virtual bool	ReconfigureRegisterInfo (DynamicRegisterInfo &reg_info, DataExtractor &reg_data, RegisterContext &reg_context) const
Public Member Functions inherited from lldb_private::PluginInterface
	PluginInterface ()=default
virtual	~PluginInterface ()=default
	PluginInterface (const PluginInterface &)=delete
PluginInterface &	operator= (const PluginInterface &)=delete

Static Public Member Functions
static llvm::StringRef	GetPluginNameStatic ()
static void	Initialize ()
static void	Terminate ()

Private Member Functions
	ArchitectureArm ()=default

Static Private Member Functions
static std::unique_ptr< Architecture >	Create (const ArchSpec &arch)

Detailed Description

Definition at line 17 of file ArchitectureArm.h.

Constructor & Destructor Documentation

ArchitectureArm()

lldb_private::ArchitectureArm::ArchitectureArm ( )

privatedefault

Referenced by Create(), and Initialize().

Member Function Documentation

Create()

std::unique_ptr< Architecture > ArchitectureArm::Create ( const ArchSpec & arch )

staticprivate

Definition at line 40 of file ArchitectureArm.cpp.

References ArchitectureArm(), and lldb_private::ArchSpec::GetMachine().

Referenced by Initialize(), and Terminate().

GetArchitectureUnwindPlan()

UnwindPlanSP ArchitectureArm::GetArchitectureUnwindPlan ( lldb_private::Thread & thread, lldb_private::RegisterContextUnwind * regctx, std::shared_ptr< const UnwindPlan > current_unwindplan )

overridevirtual

Return an UnwindPlan that allows architecture-defined rules for finding saved registers, given a particular set of register values.

Reimplemented from lldb_private::Architecture.

Definition at line 177 of file ArchitectureArm.cpp.

References dwarf_cpsr, dwarf_lr, dwarf_pc, dwarf_r0, dwarf_r1, dwarf_r12, dwarf_r2, dwarf_r3, dwarf_s0, dwarf_s1, dwarf_s10, dwarf_s11, dwarf_s12, dwarf_s13, dwarf_s14, dwarf_s15, dwarf_s2, dwarf_s3, dwarf_s4, dwarf_s5, dwarf_s6, dwarf_s7, dwarf_s8, dwarf_s9, dwarf_sp, lldb_private::eLazyBoolNo, lldb_private::eLazyBoolYes, lldb_private::UnwindLLDB::eRegisterFound, lldb::eRegisterKindDWARF, lldb::eRegisterKindGeneric, lldb::eRegisterKindLLDB, error(), lldb_private::ArchSpec::GetAddressByteSize(), RegisterNumber::GetAsKind(), lldb_private::RegisterValue::GetAsUInt32(), lldb_private::RegisterContextUnwind::GetCFA(), lldb_private::GetLog(), lldb_private::RegisterContextUnwind::GetRegisterInfoAtIndex(), lldb_private::ArchSpec::GetTriple(), LLDB_INVALID_ADDRESS, LLDB_INVALID_REGNUM, LLDB_LOGF, LLDB_REGNUM_GENERIC_PC, LLDB_REGNUM_GENERIC_RA, lldb_private::RegisterContextUnwind::ReadRegisterValueFromRegisterLocation(), lldb_private::RegisterContextUnwind::SavedLocationForRegister(), lldb_private::UnwindPlan::Row::SetRegisterLocationToAtCFAPlusOffset(), lldb_private::UnwindPlan::Row::SetRegisterLocationToIsCFAPlusOffset(), and lldb_private::Unwind.

GetCallableLoadAddress()

addr_t ArchitectureArm::GetCallableLoadAddress ( lldb::addr_t addr, AddressClass addr_class ) const

overridevirtual

Get load_addr as a callable code load address for this target.

Take load_addr and potentially add any address bits that are needed to make the address callable. For ARM this can set bit zero (if it already isn't) if load_addr is a thumb function. If addr_class is set to AddressClass::eInvalid, then the address adjustment will always happen. If it is set to an address class that doesn't have code in it, LLDB_INVALID_ADDRESS will be returned.

Reimplemented from lldb_private::Architecture.

Definition at line 132 of file ArchitectureArm.cpp.

References lldb_private::eCodeAlternateISA, lldb_private::eData, lldb_private::eDebug, and LLDB_INVALID_ADDRESS.

GetOpcodeLoadAddress()

addr_t ArchitectureArm::GetOpcodeLoadAddress ( lldb::addr_t addr, AddressClass addr_class ) const

overridevirtual

Get load_addr as an opcode for this target.

Take load_addr and potentially strip any address bits that are needed to make the address point to an opcode. For ARM this can clear bit zero (if it already isn't) if load_addr is a thumb function and load_addr is in code. If addr_class is set to AddressClass::eInvalid, then the address adjustment will always happen. If it is set to an address class that doesn't have code in it, LLDB_INVALID_ADDRESS will be returned.

Reimplemented from lldb_private::Architecture.

Definition at line 151 of file ArchitectureArm.cpp.

References lldb_private::eData, lldb_private::eDebug, and LLDB_INVALID_ADDRESS.

GetPluginName()

llvm::StringRef lldb_private::ArchitectureArm::GetPluginName ( )

inlineoverridevirtual

Implements lldb_private::PluginInterface.

Definition at line 23 of file ArchitectureArm.h.

References GetPluginNameStatic().

GetPluginNameStatic()

llvm::StringRef lldb_private::ArchitectureArm::GetPluginNameStatic ( )

inlinestatic

Definition at line 19 of file ArchitectureArm.h.

Referenced by GetPluginName(), and Initialize().

Initialize()

void ArchitectureArm::Initialize ( )

static

Definition at line 30 of file ArchitectureArm.cpp.

References ArchitectureArm(), Create(), GetPluginNameStatic(), Initialize(), and lldb_private::PluginManager::RegisterPlugin().

Referenced by Initialize().

OverrideStopInfo()

void ArchitectureArm::OverrideStopInfo ( Thread & thread ) const

overridevirtual

This is currently intended to handle cases where a program stops at an instruction that won't get executed and it allows the stop reason, like "breakpoint hit", to be replaced with a different stop reason like "no stop reason".

This is specifically used for ARM in Thumb code when we stop in an IT instruction (if/then/else) where the instruction won't get executed and therefore it wouldn't be correct to show the program stopped at the current PC. The code is generic and applies to all ARM CPUs.

Implements lldb_private::Architecture.

Definition at line 46 of file ArchitectureArm.cpp.

References lldb_private::ARMConditionPassed(), lldb_private::Bit32(), lldb_private::Bits32(), error(), pc, UINT32_MAX, and UINT64_MAX.

Terminate()

void ArchitectureArm::Terminate ( )

static

Definition at line 36 of file ArchitectureArm.cpp.

References Create(), and lldb_private::PluginManager::UnregisterPlugin().

---

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

• ArchitectureArm.h
• ArchitectureArm.cpp