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
16using namespace lldb_private;
17
18char ExpressionVariable::ID;
19
20ExpressionVariable::ExpressionVariable() : m_flags(0) {}
21
22uint8_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(len: *byte_size);
27 m_frozen_sp->GetValue().GetData(data&: m_frozen_sp->GetDataExtractor());
28 }
29 return const_cast<uint8_t *>(
30 m_frozen_sp->GetDataExtractor().GetDataStart());
31 }
32 return nullptr;
33}
34
35char PersistentExpressionState::ID;
36
37PersistentExpressionState::PersistentExpressionState() = default;
38
39PersistentExpressionState::~PersistentExpressionState() = default;
40
41lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) {
42 SymbolMap::iterator si = m_symbol_map.find(Val: name.GetCString());
43
44 if (si != m_symbol_map.end())
45 return si->second;
46 else
47 return LLDB_INVALID_ADDRESS;
48}
49
50void PersistentExpressionState::RegisterExecutionUnit(
51 lldb::IRExecutionUnitSP &execution_unit_sp) {
52 Log *log = GetLog(mask: LLDBLog::Expressions);
53
54 m_execution_units.insert(x: 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

source code of lldb/source/Expression/ExpressionVariable.cpp