contrib/llvm/tools/lldb/source/Expression/ExpressionVariable.cpp

   1 //===-- ExpressionVariable.cpp ----------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "lldb/Expression/ExpressionVariable.h"
  11 #include "lldb/Expression/IRExecutionUnit.h"
  12 #include "lldb/Utility/Log.h"
  13
  14 using namespace lldb_private;
  15
  16 ExpressionVariable::~ExpressionVariable() {}
  17
  18 uint8_t *ExpressionVariable::GetValueBytes() {
  19   const size_t byte_size = m_frozen_sp->GetByteSize();
  20   if (byte_size > 0) {
  21     if (m_frozen_sp->GetDataExtractor().GetByteSize() < byte_size) {
  22       m_frozen_sp->GetValue().ResizeData(byte_size);
  23       m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor());
  24     }
  25     return const_cast<uint8_t *>(
  26         m_frozen_sp->GetDataExtractor().GetDataStart());
  27   }
  28   return NULL;
  29 }
  30
  31 PersistentExpressionState::~PersistentExpressionState() {}
  32
  33 lldb::addr_t PersistentExpressionState::LookupSymbol(const ConstString &name) {
  34   SymbolMap::iterator si = m_symbol_map.find(name.GetCString());
  35
  36   if (si != m_symbol_map.end())
  37     return si->second;
  38   else
  39     return LLDB_INVALID_ADDRESS;
  40 }
  41
  42 void PersistentExpressionState::RegisterExecutionUnit(
  43     lldb::IRExecutionUnitSP &execution_unit_sp) {
  44   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
  45
  46   m_execution_units.insert(execution_unit_sp);
  47
  48   if (log)
  49     log->Printf("Registering JITted Functions:\n");
  50
  51   for (const IRExecutionUnit::JittedFunction &jitted_function :
  52        execution_unit_sp->GetJittedFunctions()) {
  53     if (jitted_function.m_external &&
  54         jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
  55         jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
  56       m_symbol_map[jitted_function.m_name.GetCString()] =
  57           jitted_function.m_remote_addr;
  58       if (log)
  59         log->Printf("  Function: %s at 0x%" PRIx64 ".",
  60                     jitted_function.m_name.GetCString(),
  61                     jitted_function.m_remote_addr);
  62     }
  63   }
  64
  65   if (log)
  66     log->Printf("Registering JIIted Symbols:\n");
  67
  68   for (const IRExecutionUnit::JittedGlobalVariable &global_var :
  69        execution_unit_sp->GetJittedGlobalVariables()) {
  70     if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
  71       // Demangle the name before inserting it, so that lookups by the ConstStr
  72       // of the demangled name
  73       // will find the mangled one (needed for looking up metadata pointers.)
  74       Mangled mangler(global_var.m_name);
  75       mangler.GetDemangledName(lldb::eLanguageTypeUnknown);
  76       m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
  77       if (log)
  78         log->Printf("  Symbol: %s at 0x%" PRIx64 ".",
  79                     global_var.m_name.GetCString(), global_var.m_remote_addr);
  80     }
  81   }
  82 }