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//===-- ExpressionVariable.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 "lldb/Expression/ExpressionVariable.h"
#include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include <optional>
using namespace lldb_private;
char ExpressionVariable::ID;
ExpressionVariable::ExpressionVariable() : m_flags(0) {}
uint8_t *ExpressionVariable::GetValueBytes() {
std::optional<uint64_t> byte_size =
llvm::expectedToOptional(m_frozen_sp->GetByteSize());
if (byte_size && *byte_size) {
if (m_frozen_sp->GetDataExtractor().GetByteSize() < *byte_size) {
m_frozen_sp->GetValue().ResizeData(*byte_size);
m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor());
}
return const_cast<uint8_t *>(
m_frozen_sp->GetDataExtractor().GetDataStart());
}
return nullptr;
}
char PersistentExpressionState::ID;
PersistentExpressionState::PersistentExpressionState() = default;
PersistentExpressionState::~PersistentExpressionState() = default;
lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) {
SymbolMap::iterator si = m_symbol_map.find(name.GetCString());
if (si != m_symbol_map.end())
return si->second;
else
return LLDB_INVALID_ADDRESS;
}
void PersistentExpressionState::RegisterExecutionUnit(
lldb::IRExecutionUnitSP &execution_unit_sp) {
Log *log = GetLog(LLDBLog::Expressions);
m_execution_units.insert(execution_unit_sp);
LLDB_LOGF(log, "Registering JITted Functions:\n");
for (const IRExecutionUnit::JittedFunction &jitted_function :
execution_unit_sp->GetJittedFunctions()) {
if (jitted_function.m_external &&
jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
m_symbol_map[jitted_function.m_name.GetCString()] =
jitted_function.m_remote_addr;
LLDB_LOGF(log, " Function: %s at 0x%" PRIx64 ".",
jitted_function.m_name.GetCString(),
jitted_function.m_remote_addr);
}
}
LLDB_LOGF(log, "Registering JIIted Symbols:\n");
for (const IRExecutionUnit::JittedGlobalVariable &global_var :
execution_unit_sp->GetJittedGlobalVariables()) {
if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
// Demangle the name before inserting it, so that lookups by the ConstStr
// of the demangled name will find the mangled one (needed for looking up
// metadata pointers.)
Mangled mangler(global_var.m_name);
mangler.GetDemangledName();
m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
LLDB_LOGF(log, " Symbol: %s at 0x%" PRIx64 ".",
global_var.m_name.GetCString(), global_var.m_remote_addr);
}
}
}
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