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llvm-project/lldb/source/API/SBFrame.cpp

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//===-- SBFrame.cpp -------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include <algorithm>
#include <set>
#include <string>
#include "lldb/API/SBFrame.h"
#include "lldb/lldb-types.h"
#include "Utils.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Core/ValueObjectRegister.h"
#include "lldb/Core/ValueObjectVariable.h"
#include "lldb/Expression/ExpressionVariable.h"
#include "lldb/Expression/UserExpression.h"
#include "lldb/Host/Host.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Symbol/Variable.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/StackFrameRecognizer.h"
#include "lldb/Target/StackID.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Instrumentation.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Stream.h"
#include "lldb/API/SBAddress.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBExpressionOptions.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBSymbolContext.h"
#include "lldb/API/SBThread.h"
#include "lldb/API/SBValue.h"
#include "lldb/API/SBVariablesOptions.h"
#include "llvm/Support/PrettyStackTrace.h"
using namespace lldb;
using namespace lldb_private;
SBFrame::SBFrame() : m_opaque_sp(new ExecutionContextRef()) {
LLDB_INSTRUMENT_VA(this);
}
SBFrame::SBFrame(const StackFrameSP &lldb_object_sp)
: m_opaque_sp(new ExecutionContextRef(lldb_object_sp)) {
LLDB_INSTRUMENT_VA(this, lldb_object_sp);
}
SBFrame::SBFrame(const SBFrame &rhs) {
LLDB_INSTRUMENT_VA(this, rhs);
m_opaque_sp = clone(rhs.m_opaque_sp);
}
SBFrame::~SBFrame() = default;
const SBFrame &SBFrame::operator=(const SBFrame &rhs) {
LLDB_INSTRUMENT_VA(this, rhs);
if (this != &rhs)
m_opaque_sp = clone(rhs.m_opaque_sp);
return *this;
}
StackFrameSP SBFrame::GetFrameSP() const {
return (m_opaque_sp ? m_opaque_sp->GetFrameSP() : StackFrameSP());
}
void SBFrame::SetFrameSP(const StackFrameSP &lldb_object_sp) {
return m_opaque_sp->SetFrameSP(lldb_object_sp);
}
bool SBFrame::IsValid() const {
LLDB_INSTRUMENT_VA(this);
return this->operator bool();
}
SBFrame::operator bool() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock()))
return GetFrameSP().get() != nullptr;
}
// Without a target & process we can't have a valid stack frame.
return false;
}
SBSymbolContext SBFrame::GetSymbolContext(uint32_t resolve_scope) const {
LLDB_INSTRUMENT_VA(this, resolve_scope);
SBSymbolContext sb_sym_ctx;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
SymbolContextItem scope = static_cast<SymbolContextItem>(resolve_scope);
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
if (StackFrame *frame = exe_ctx.GetFramePtr())
sb_sym_ctx = frame->GetSymbolContext(scope);
}
}
return sb_sym_ctx;
}
SBModule SBFrame::GetModule() const {
LLDB_INSTRUMENT_VA(this);
SBModule sb_module;
ModuleSP module_sp;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
module_sp = frame->GetSymbolContext(eSymbolContextModule).module_sp;
sb_module.SetSP(module_sp);
}
}
}
return sb_module;
}
SBCompileUnit SBFrame::GetCompileUnit() const {
LLDB_INSTRUMENT_VA(this);
SBCompileUnit sb_comp_unit;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
sb_comp_unit.reset(
frame->GetSymbolContext(eSymbolContextCompUnit).comp_unit);
}
}
}
return sb_comp_unit;
}
SBFunction SBFrame::GetFunction() const {
LLDB_INSTRUMENT_VA(this);
SBFunction sb_function;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
sb_function.reset(
frame->GetSymbolContext(eSymbolContextFunction).function);
}
}
}
return sb_function;
}
SBSymbol SBFrame::GetSymbol() const {
LLDB_INSTRUMENT_VA(this);
SBSymbol sb_symbol;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
sb_symbol.reset(frame->GetSymbolContext(eSymbolContextSymbol).symbol);
}
}
}
return sb_symbol;
}
SBBlock SBFrame::GetBlock() const {
LLDB_INSTRUMENT_VA(this);
SBBlock sb_block;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame)
sb_block.SetPtr(frame->GetSymbolContext(eSymbolContextBlock).block);
}
}
return sb_block;
}
SBBlock SBFrame::GetFrameBlock() const {
LLDB_INSTRUMENT_VA(this);
SBBlock sb_block;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame)
sb_block.SetPtr(frame->GetFrameBlock());
}
}
return sb_block;
}
SBLineEntry SBFrame::GetLineEntry() const {
LLDB_INSTRUMENT_VA(this);
SBLineEntry sb_line_entry;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
sb_line_entry.SetLineEntry(
frame->GetSymbolContext(eSymbolContextLineEntry).line_entry);
}
}
}
return sb_line_entry;
}
uint32_t SBFrame::GetFrameID() const {
LLDB_INSTRUMENT_VA(this);
uint32_t frame_idx = UINT32_MAX;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
if (frame)
frame_idx = frame->GetFrameIndex();
return frame_idx;
}
lldb::addr_t SBFrame::GetCFA() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
if (frame)
return frame->GetStackID().GetCallFrameAddress();
return LLDB_INVALID_ADDRESS;
}
addr_t SBFrame::GetPC() const {
LLDB_INSTRUMENT_VA(this);
addr_t addr = LLDB_INVALID_ADDRESS;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
addr = frame->GetFrameCodeAddress().GetOpcodeLoadAddress(
target, AddressClass::eCode);
}
}
}
return addr;
}
bool SBFrame::SetPC(addr_t new_pc) {
LLDB_INSTRUMENT_VA(this, new_pc);
bool ret_val = false;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
if (StackFrame *frame = exe_ctx.GetFramePtr()) {
if (RegisterContextSP reg_ctx_sp = frame->GetRegisterContext()) {
ret_val = reg_ctx_sp->SetPC(new_pc);
}
}
}
}
return ret_val;
}
addr_t SBFrame::GetSP() const {
LLDB_INSTRUMENT_VA(this);
addr_t addr = LLDB_INVALID_ADDRESS;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
if (StackFrame *frame = exe_ctx.GetFramePtr()) {
if (RegisterContextSP reg_ctx_sp = frame->GetRegisterContext()) {
addr = reg_ctx_sp->GetSP();
}
}
}
}
return addr;
}
addr_t SBFrame::GetFP() const {
LLDB_INSTRUMENT_VA(this);
addr_t addr = LLDB_INVALID_ADDRESS;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
if (StackFrame *frame = exe_ctx.GetFramePtr()) {
if (RegisterContextSP reg_ctx_sp = frame->GetRegisterContext()) {
addr = reg_ctx_sp->GetFP();
}
}
}
}
return addr;
}
SBAddress SBFrame::GetPCAddress() const {
LLDB_INSTRUMENT_VA(this);
SBAddress sb_addr;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame)
sb_addr.SetAddress(frame->GetFrameCodeAddress());
}
}
return sb_addr;
}
void SBFrame::Clear() {
LLDB_INSTRUMENT_VA(this);
m_opaque_sp->Clear();
}
lldb::SBValue SBFrame::GetValueForVariablePath(const char *var_path) {
LLDB_INSTRUMENT_VA(this, var_path);
SBValue sb_value;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (frame && target) {
lldb::DynamicValueType use_dynamic =
frame->CalculateTarget()->GetPreferDynamicValue();
sb_value = GetValueForVariablePath(var_path, use_dynamic);
}
return sb_value;
}
lldb::SBValue SBFrame::GetValueForVariablePath(const char *var_path,
DynamicValueType use_dynamic) {
LLDB_INSTRUMENT_VA(this, var_path, use_dynamic);
SBValue sb_value;
if (var_path == nullptr || var_path[0] == '\0') {
return sb_value;
}
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
VariableSP var_sp;
Status error;
ValueObjectSP value_sp(frame->GetValueForVariableExpressionPath(
var_path, eNoDynamicValues,
StackFrame::eExpressionPathOptionCheckPtrVsMember |
StackFrame::eExpressionPathOptionsAllowDirectIVarAccess,
var_sp, error));
sb_value.SetSP(value_sp, use_dynamic);
}
}
}
return sb_value;
}
SBValue SBFrame::FindVariable(const char *name) {
LLDB_INSTRUMENT_VA(this, name);
SBValue value;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (frame && target) {
lldb::DynamicValueType use_dynamic =
frame->CalculateTarget()->GetPreferDynamicValue();
value = FindVariable(name, use_dynamic);
}
return value;
}
SBValue SBFrame::FindVariable(const char *name,
lldb::DynamicValueType use_dynamic) {
LLDB_INSTRUMENT_VA(this, name, use_dynamic);
VariableSP var_sp;
SBValue sb_value;
if (name == nullptr || name[0] == '\0') {
return sb_value;
}
ValueObjectSP value_sp;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
value_sp = frame->FindVariable(ConstString(name));
if (value_sp)
sb_value.SetSP(value_sp, use_dynamic);
}
}
}
return sb_value;
}
SBValue SBFrame::FindValue(const char *name, ValueType value_type) {
LLDB_INSTRUMENT_VA(this, name, value_type);
SBValue value;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (frame && target) {
lldb::DynamicValueType use_dynamic =
frame->CalculateTarget()->GetPreferDynamicValue();
value = FindValue(name, value_type, use_dynamic);
}
return value;
}
SBValue SBFrame::FindValue(const char *name, ValueType value_type,
lldb::DynamicValueType use_dynamic) {
LLDB_INSTRUMENT_VA(this, name, value_type, use_dynamic);
SBValue sb_value;
if (name == nullptr || name[0] == '\0') {
return sb_value;
}
ValueObjectSP value_sp;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
VariableList variable_list;
switch (value_type) {
case eValueTypeVariableGlobal: // global variable
case eValueTypeVariableStatic: // static variable
case eValueTypeVariableArgument: // function argument variables
case eValueTypeVariableLocal: // function local variables
case eValueTypeVariableThreadLocal: // thread local variables
{
SymbolContext sc(frame->GetSymbolContext(eSymbolContextBlock));
const bool can_create = true;
const bool get_parent_variables = true;
const bool stop_if_block_is_inlined_function = true;
if (sc.block)
sc.block->AppendVariables(
can_create, get_parent_variables,
stop_if_block_is_inlined_function,
[frame](Variable *v) { return v->IsInScope(frame); },
&variable_list);
if (value_type == eValueTypeVariableGlobal) {
const bool get_file_globals = true;
VariableList *frame_vars = frame->GetVariableList(get_file_globals);
if (frame_vars)
frame_vars->AppendVariablesIfUnique(variable_list);
}
ConstString const_name(name);
VariableSP variable_sp(
variable_list.FindVariable(const_name, value_type));
if (variable_sp) {
value_sp = frame->GetValueObjectForFrameVariable(variable_sp,
eNoDynamicValues);
sb_value.SetSP(value_sp, use_dynamic);
}
} break;
case eValueTypeRegister: // stack frame register value
{
RegisterContextSP reg_ctx(frame->GetRegisterContext());
if (reg_ctx) {
if (const RegisterInfo *reg_info =
reg_ctx->GetRegisterInfoByName(name)) {
value_sp = ValueObjectRegister::Create(frame, reg_ctx, reg_info);
sb_value.SetSP(value_sp);
}
}
} break;
case eValueTypeRegisterSet: // A collection of stack frame register
// values
{
RegisterContextSP reg_ctx(frame->GetRegisterContext());
if (reg_ctx) {
const uint32_t num_sets = reg_ctx->GetRegisterSetCount();
for (uint32_t set_idx = 0; set_idx < num_sets; ++set_idx) {
const RegisterSet *reg_set = reg_ctx->GetRegisterSet(set_idx);
if (reg_set &&
(llvm::StringRef(reg_set->name).equals_insensitive(name) ||
llvm::StringRef(reg_set->short_name)
.equals_insensitive(name))) {
value_sp =
ValueObjectRegisterSet::Create(frame, reg_ctx, set_idx);
sb_value.SetSP(value_sp);
break;
}
}
}
} break;
case eValueTypeConstResult: // constant result variables
{
ConstString const_name(name);
ExpressionVariableSP expr_var_sp(
target->GetPersistentVariable(const_name));
if (expr_var_sp) {
value_sp = expr_var_sp->GetValueObject();
sb_value.SetSP(value_sp, use_dynamic);
}
} break;
default:
break;
}
}
}
}
return sb_value;
}
bool SBFrame::IsEqual(const SBFrame &that) const {
LLDB_INSTRUMENT_VA(this, that);
lldb::StackFrameSP this_sp = GetFrameSP();
lldb::StackFrameSP that_sp = that.GetFrameSP();
return (this_sp && that_sp && this_sp->GetStackID() == that_sp->GetStackID());
}
bool SBFrame::operator==(const SBFrame &rhs) const {
LLDB_INSTRUMENT_VA(this, rhs);
return IsEqual(rhs);
}
bool SBFrame::operator!=(const SBFrame &rhs) const {
LLDB_INSTRUMENT_VA(this, rhs);
return !IsEqual(rhs);
}
SBThread SBFrame::GetThread() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
ThreadSP thread_sp(exe_ctx.GetThreadSP());
SBThread sb_thread(thread_sp);
return sb_thread;
}
const char *SBFrame::Disassemble() const {
LLDB_INSTRUMENT_VA(this);
const char *disassembly = nullptr;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
disassembly = frame->Disassemble();
}
}
}
return disassembly;
}
SBValueList SBFrame::GetVariables(bool arguments, bool locals, bool statics,
bool in_scope_only) {
LLDB_INSTRUMENT_VA(this, arguments, locals, statics, in_scope_only);
SBValueList value_list;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (frame && target) {
lldb::DynamicValueType use_dynamic =
frame->CalculateTarget()->GetPreferDynamicValue();
const bool include_runtime_support_values =
target->GetDisplayRuntimeSupportValues();
SBVariablesOptions options;
options.SetIncludeArguments(arguments);
options.SetIncludeLocals(locals);
options.SetIncludeStatics(statics);
options.SetInScopeOnly(in_scope_only);
options.SetIncludeRuntimeSupportValues(include_runtime_support_values);
options.SetUseDynamic(use_dynamic);
value_list = GetVariables(options);
}
return value_list;
}
lldb::SBValueList SBFrame::GetVariables(bool arguments, bool locals,
bool statics, bool in_scope_only,
lldb::DynamicValueType use_dynamic) {
LLDB_INSTRUMENT_VA(this, arguments, locals, statics, in_scope_only,
use_dynamic);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
Target *target = exe_ctx.GetTargetPtr();
const bool include_runtime_support_values =
target ? target->GetDisplayRuntimeSupportValues() : false;
SBVariablesOptions options;
options.SetIncludeArguments(arguments);
options.SetIncludeLocals(locals);
options.SetIncludeStatics(statics);
options.SetInScopeOnly(in_scope_only);
options.SetIncludeRuntimeSupportValues(include_runtime_support_values);
options.SetUseDynamic(use_dynamic);
return GetVariables(options);
}
SBValueList SBFrame::GetVariables(const lldb::SBVariablesOptions &options) {
LLDB_INSTRUMENT_VA(this, options);
SBValueList value_list;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
const bool statics = options.GetIncludeStatics();
const bool arguments = options.GetIncludeArguments();
const bool recognized_arguments =
options.GetIncludeRecognizedArguments(SBTarget(exe_ctx.GetTargetSP()));
const bool locals = options.GetIncludeLocals();
const bool in_scope_only = options.GetInScopeOnly();
const bool include_runtime_support_values =
options.GetIncludeRuntimeSupportValues();
const lldb::DynamicValueType use_dynamic = options.GetUseDynamic();
std::set<VariableSP> variable_set;
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
VariableList *variable_list = nullptr;
variable_list = frame->GetVariableList(true);
if (variable_list) {
const size_t num_variables = variable_list->GetSize();
if (num_variables) {
for (const VariableSP &variable_sp : *variable_list) {
if (variable_sp) {
bool add_variable = false;
switch (variable_sp->GetScope()) {
case eValueTypeVariableGlobal:
case eValueTypeVariableStatic:
case eValueTypeVariableThreadLocal:
add_variable = statics;
break;
case eValueTypeVariableArgument:
add_variable = arguments;
break;
case eValueTypeVariableLocal:
add_variable = locals;
break;
default:
break;
}
if (add_variable) {
// Only add variables once so we don't end up with duplicates
if (variable_set.find(variable_sp) == variable_set.end())
variable_set.insert(variable_sp);
else
continue;
if (in_scope_only && !variable_sp->IsInScope(frame))
continue;
ValueObjectSP valobj_sp(frame->GetValueObjectForFrameVariable(
variable_sp, eNoDynamicValues));
if (!include_runtime_support_values && valobj_sp != nullptr &&
valobj_sp->IsRuntimeSupportValue())
continue;
SBValue value_sb;
value_sb.SetSP(valobj_sp, use_dynamic);
value_list.Append(value_sb);
}
}
}
}
}
if (recognized_arguments) {
auto recognized_frame = frame->GetRecognizedFrame();
if (recognized_frame) {
ValueObjectListSP recognized_arg_list =
recognized_frame->GetRecognizedArguments();
if (recognized_arg_list) {
for (auto &rec_value_sp : recognized_arg_list->GetObjects()) {
SBValue value_sb;
value_sb.SetSP(rec_value_sp, use_dynamic);
value_list.Append(value_sb);
}
}
}
}
}
}
}
return value_list;
}
SBValueList SBFrame::GetRegisters() {
LLDB_INSTRUMENT_VA(this);
SBValueList value_list;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
RegisterContextSP reg_ctx(frame->GetRegisterContext());
if (reg_ctx) {
const uint32_t num_sets = reg_ctx->GetRegisterSetCount();
for (uint32_t set_idx = 0; set_idx < num_sets; ++set_idx) {
value_list.Append(
ValueObjectRegisterSet::Create(frame, reg_ctx, set_idx));
}
}
}
}
}
return value_list;
}
SBValue SBFrame::FindRegister(const char *name) {
LLDB_INSTRUMENT_VA(this, name);
SBValue result;
ValueObjectSP value_sp;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
RegisterContextSP reg_ctx(frame->GetRegisterContext());
if (reg_ctx) {
if (const RegisterInfo *reg_info =
reg_ctx->GetRegisterInfoByName(name)) {
value_sp = ValueObjectRegister::Create(frame, reg_ctx, reg_info);
result.SetSP(value_sp);
}
}
}
}
}
return result;
}
bool SBFrame::GetDescription(SBStream &description) {
LLDB_INSTRUMENT_VA(this, description);
Stream &strm = description.ref();
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
frame->DumpUsingSettingsFormat(&strm);
}
}
} else
strm.PutCString("No value");
return true;
}
SBValue SBFrame::EvaluateExpression(const char *expr) {
LLDB_INSTRUMENT_VA(this, expr);
SBValue result;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (frame && target) {
SBExpressionOptions options;
lldb::DynamicValueType fetch_dynamic_value =
frame->CalculateTarget()->GetPreferDynamicValue();
options.SetFetchDynamicValue(fetch_dynamic_value);
options.SetUnwindOnError(true);
options.SetIgnoreBreakpoints(true);
if (target->GetLanguage() != eLanguageTypeUnknown)
options.SetLanguage(target->GetLanguage());
else
options.SetLanguage(frame->GetLanguage());
return EvaluateExpression(expr, options);
}
return result;
}
SBValue
SBFrame::EvaluateExpression(const char *expr,
lldb::DynamicValueType fetch_dynamic_value) {
LLDB_INSTRUMENT_VA(this, expr, fetch_dynamic_value);
SBExpressionOptions options;
options.SetFetchDynamicValue(fetch_dynamic_value);
options.SetUnwindOnError(true);
options.SetIgnoreBreakpoints(true);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (target && target->GetLanguage() != eLanguageTypeUnknown)
options.SetLanguage(target->GetLanguage());
else if (frame)
options.SetLanguage(frame->GetLanguage());
return EvaluateExpression(expr, options);
}
SBValue SBFrame::EvaluateExpression(const char *expr,
lldb::DynamicValueType fetch_dynamic_value,
bool unwind_on_error) {
LLDB_INSTRUMENT_VA(this, expr, fetch_dynamic_value, unwind_on_error);
SBExpressionOptions options;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
options.SetFetchDynamicValue(fetch_dynamic_value);
options.SetUnwindOnError(unwind_on_error);
options.SetIgnoreBreakpoints(true);
StackFrame *frame = exe_ctx.GetFramePtr();
Target *target = exe_ctx.GetTargetPtr();
if (target && target->GetLanguage() != eLanguageTypeUnknown)
options.SetLanguage(target->GetLanguage());
else if (frame)
options.SetLanguage(frame->GetLanguage());
return EvaluateExpression(expr, options);
}
lldb::SBValue SBFrame::EvaluateExpression(const char *expr,
const SBExpressionOptions &options) {
LLDB_INSTRUMENT_VA(this, expr, options);
Log *expr_log = GetLog(LLDBLog::Expressions);
SBValue expr_result;
if (expr == nullptr || expr[0] == '\0') {
return expr_result;
}
ValueObjectSP expr_value_sp;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
std::unique_ptr<llvm::PrettyStackTraceFormat> stack_trace;
if (target->GetDisplayExpressionsInCrashlogs()) {
StreamString frame_description;
frame->DumpUsingSettingsFormat(&frame_description);
stack_trace = std::make_unique<llvm::PrettyStackTraceFormat>(
"SBFrame::EvaluateExpression (expr = \"%s\", fetch_dynamic_value "
"= %u) %s",
expr, options.GetFetchDynamicValue(),
frame_description.GetData());
}
target->EvaluateExpression(expr, frame, expr_value_sp, options.ref());
expr_result.SetSP(expr_value_sp, options.GetFetchDynamicValue());
}
}
}
LLDB_LOGF(expr_log,
"** [SBFrame::EvaluateExpression] Expression result is "
"%s, summary %s **",
expr_result.GetValue(), expr_result.GetSummary());
return expr_result;
}
bool SBFrame::IsInlined() {
LLDB_INSTRUMENT_VA(this);
return static_cast<const SBFrame *>(this)->IsInlined();
}
bool SBFrame::IsInlined() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
Block *block = frame->GetSymbolContext(eSymbolContextBlock).block;
if (block)
return block->GetContainingInlinedBlock() != nullptr;
}
}
}
return false;
}
bool SBFrame::IsArtificial() {
LLDB_INSTRUMENT_VA(this);
return static_cast<const SBFrame *>(this)->IsArtificial();
}
bool SBFrame::IsArtificial() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = exe_ctx.GetFramePtr();
if (frame)
return frame->IsArtificial();
return false;
}
const char *SBFrame::GetFunctionName() {
LLDB_INSTRUMENT_VA(this);
return static_cast<const SBFrame *>(this)->GetFunctionName();
}
lldb::LanguageType SBFrame::GuessLanguage() const {
LLDB_INSTRUMENT_VA(this);
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
return frame->GuessLanguage();
}
}
}
return eLanguageTypeUnknown;
}
const char *SBFrame::GetFunctionName() const {
LLDB_INSTRUMENT_VA(this);
const char *name = nullptr;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
SymbolContext sc(frame->GetSymbolContext(eSymbolContextFunction |
eSymbolContextBlock |
eSymbolContextSymbol));
if (sc.block) {
Block *inlined_block = sc.block->GetContainingInlinedBlock();
if (inlined_block) {
const InlineFunctionInfo *inlined_info =
inlined_block->GetInlinedFunctionInfo();
name = inlined_info->GetName().AsCString();
}
}
if (name == nullptr) {
if (sc.function)
name = sc.function->GetName().GetCString();
}
if (name == nullptr) {
if (sc.symbol)
name = sc.symbol->GetName().GetCString();
}
}
}
}
return name;
}
const char *SBFrame::GetDisplayFunctionName() {
LLDB_INSTRUMENT_VA(this);
const char *name = nullptr;
std::unique_lock<std::recursive_mutex> lock;
ExecutionContext exe_ctx(m_opaque_sp.get(), lock);
StackFrame *frame = nullptr;
Target *target = exe_ctx.GetTargetPtr();
Process *process = exe_ctx.GetProcessPtr();
if (target && process) {
Process::StopLocker stop_locker;
if (stop_locker.TryLock(&process->GetRunLock())) {
frame = exe_ctx.GetFramePtr();
if (frame) {
SymbolContext sc(frame->GetSymbolContext(eSymbolContextFunction |
eSymbolContextBlock |
eSymbolContextSymbol));
if (sc.block) {
Block *inlined_block = sc.block->GetContainingInlinedBlock();
if (inlined_block) {
const InlineFunctionInfo *inlined_info =
inlined_block->GetInlinedFunctionInfo();
name = inlined_info->GetDisplayName().AsCString();
}
}
if (name == nullptr) {
if (sc.function)
name = sc.function->GetDisplayName().GetCString();
}
if (name == nullptr) {
if (sc.symbol)
name = sc.symbol->GetDisplayName().GetCString();
}
}
}
}
return name;
}
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