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
GetValueBytes()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
LookupSymbol(ConstString name)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
RegisterExecutionUnit(lldb::IRExecutionUnitSP & execution_unit_sp)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