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 char ExpressionVariable::ID; 19 20 ExpressionVariable::ExpressionVariable() : m_flags(0) {} 21 22 uint8_t *ExpressionVariable::GetValueBytes() { 23 std::optional<uint64_t> byte_size = m_frozen_sp->GetByteSize(); 24 if (byte_size && *byte_size) { 25 if (m_frozen_sp->GetDataExtractor().GetByteSize() < *byte_size) { 26 m_frozen_sp->GetValue().ResizeData(*byte_size); 27 m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor()); 28 } 29 return const_cast<uint8_t *>( 30 m_frozen_sp->GetDataExtractor().GetDataStart()); 31 } 32 return nullptr; 33 } 34 35 char PersistentExpressionState::ID; 36 37 PersistentExpressionState::PersistentExpressionState() = default; 38 39 PersistentExpressionState::~PersistentExpressionState() = default; 40 41 lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) { 42 SymbolMap::iterator si = m_symbol_map.find(name.GetCString()); 43 44 if (si != m_symbol_map.end()) 45 return si->second; 46 else 47 return LLDB_INVALID_ADDRESS; 48 } 49 50 void PersistentExpressionState::RegisterExecutionUnit( 51 lldb::IRExecutionUnitSP &execution_unit_sp) { 52 Log *log = GetLog(LLDBLog::Expressions); 53 54 m_execution_units.insert(execution_unit_sp); 55 56 LLDB_LOGF(log, "Registering JITted Functions:\n"); 57 58 for (const IRExecutionUnit::JittedFunction &jitted_function : 59 execution_unit_sp->GetJittedFunctions()) { 60 if (jitted_function.m_external && 61 jitted_function.m_name != execution_unit_sp->GetFunctionName() && 62 jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) { 63 m_symbol_map[jitted_function.m_name.GetCString()] = 64 jitted_function.m_remote_addr; 65 LLDB_LOGF(log, " Function: %s at 0x%" PRIx64 ".", 66 jitted_function.m_name.GetCString(), 67 jitted_function.m_remote_addr); 68 } 69 } 70 71 LLDB_LOGF(log, "Registering JIIted Symbols:\n"); 72 73 for (const IRExecutionUnit::JittedGlobalVariable &global_var : 74 execution_unit_sp->GetJittedGlobalVariables()) { 75 if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) { 76 // Demangle the name before inserting it, so that lookups by the ConstStr 77 // of the demangled name will find the mangled one (needed for looking up 78 // metadata pointers.) 79 Mangled mangler(global_var.m_name); 80 mangler.GetDemangledName(); 81 m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr; 82 LLDB_LOGF(log, " Symbol: %s at 0x%" PRIx64 ".", 83 global_var.m_name.GetCString(), global_var.m_remote_addr); 84 } 85 } 86 } 87