1 //===-- ExpressionVariable.cpp --------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "lldb/Expression/ExpressionVariable.h" 10 #include "lldb/Expression/IRExecutionUnit.h" 11 #include "lldb/Target/Target.h" 12 #include "lldb/Utility/LLDBLog.h" 13 #include "lldb/Utility/Log.h" 14 #include <optional> 15 16 using namespace lldb_private; 17 18 ExpressionVariable::~ExpressionVariable() = default; 19 20 uint8_t *ExpressionVariable::GetValueBytes() { 21 std::optional<uint64_t> byte_size = m_frozen_sp->GetByteSize(); 22 if (byte_size && *byte_size) { 23 if (m_frozen_sp->GetDataExtractor().GetByteSize() < *byte_size) { 24 m_frozen_sp->GetValue().ResizeData(*byte_size); 25 m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor()); 26 } 27 return const_cast<uint8_t *>( 28 m_frozen_sp->GetDataExtractor().GetDataStart()); 29 } 30 return nullptr; 31 } 32 33 PersistentExpressionState::~PersistentExpressionState() = default; 34 35 lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) { 36 SymbolMap::iterator si = m_symbol_map.find(name.GetCString()); 37 38 if (si != m_symbol_map.end()) 39 return si->second; 40 else 41 return LLDB_INVALID_ADDRESS; 42 } 43 44 void PersistentExpressionState::RegisterExecutionUnit( 45 lldb::IRExecutionUnitSP &execution_unit_sp) { 46 Log *log = GetLog(LLDBLog::Expressions); 47 48 m_execution_units.insert(execution_unit_sp); 49 50 LLDB_LOGF(log, "Registering JITted Functions:\n"); 51 52 for (const IRExecutionUnit::JittedFunction &jitted_function : 53 execution_unit_sp->GetJittedFunctions()) { 54 if (jitted_function.m_external && 55 jitted_function.m_name != execution_unit_sp->GetFunctionName() && 56 jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) { 57 m_symbol_map[jitted_function.m_name.GetCString()] = 58 jitted_function.m_remote_addr; 59 LLDB_LOGF(log, " Function: %s at 0x%" PRIx64 ".", 60 jitted_function.m_name.GetCString(), 61 jitted_function.m_remote_addr); 62 } 63 } 64 65 LLDB_LOGF(log, "Registering JIIted Symbols:\n"); 66 67 for (const IRExecutionUnit::JittedGlobalVariable &global_var : 68 execution_unit_sp->GetJittedGlobalVariables()) { 69 if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) { 70 // Demangle the name before inserting it, so that lookups by the ConstStr 71 // of the demangled name will find the mangled one (needed for looking up 72 // metadata pointers.) 73 Mangled mangler(global_var.m_name); 74 mangler.GetDemangledName(); 75 m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr; 76 LLDB_LOGF(log, " Symbol: %s at 0x%" PRIx64 ".", 77 global_var.m_name.GetCString(), global_var.m_remote_addr); 78 } 79 } 80 } 81