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/Log.h"
13
14 using namespace lldb_private;
15
~ExpressionVariable()16 ExpressionVariable::~ExpressionVariable() {}
17
GetValueBytes()18 uint8_t *ExpressionVariable::GetValueBytes() {
19 llvm::Optional<uint64_t> byte_size = m_frozen_sp->GetByteSize();
20 if (byte_size && *byte_size) {
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 nullptr;
29 }
30
~PersistentExpressionState()31 PersistentExpressionState::~PersistentExpressionState() {}
32
LookupSymbol(ConstString name)33 lldb::addr_t PersistentExpressionState::LookupSymbol(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
RegisterExecutionUnit(lldb::IRExecutionUnitSP & execution_unit_sp)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 LLDB_LOGF(log, "Registering JITted Functions:\n");
49
50 for (const IRExecutionUnit::JittedFunction &jitted_function :
51 execution_unit_sp->GetJittedFunctions()) {
52 if (jitted_function.m_external &&
53 jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
54 jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
55 m_symbol_map[jitted_function.m_name.GetCString()] =
56 jitted_function.m_remote_addr;
57 LLDB_LOGF(log, " Function: %s at 0x%" PRIx64 ".",
58 jitted_function.m_name.GetCString(),
59 jitted_function.m_remote_addr);
60 }
61 }
62
63 LLDB_LOGF(log, "Registering JIIted Symbols:\n");
64
65 for (const IRExecutionUnit::JittedGlobalVariable &global_var :
66 execution_unit_sp->GetJittedGlobalVariables()) {
67 if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
68 // Demangle the name before inserting it, so that lookups by the ConstStr
69 // of the demangled name will find the mangled one (needed for looking up
70 // metadata pointers.)
71 Mangled mangler(global_var.m_name);
72 mangler.GetDemangledName();
73 m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
74 LLDB_LOGF(log, " Symbol: %s at 0x%" PRIx64 ".",
75 global_var.m_name.GetCString(), global_var.m_remote_addr);
76 }
77 }
78 }
79