1 files changed, 92 insertions, 0 deletions

diff --git a/contrib/llvm-project/lldb/source/Expression/ExpressionVariable.cpp b/contrib/llvm-project/lldb/source/Expression/ExpressionVariable.cpp
new file mode 100644
index 000000000000..97305dcf5a02
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Expression/ExpressionVariable.cpp
@@ -0,0 +1,92 @@
+//===-- ExpressionVariable.cpp ----------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Expression/ExpressionVariable.h"
+#include "lldb/Expression/IRExecutionUnit.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Utility/Log.h"
+
+using namespace lldb_private;
+
+ExpressionVariable::~ExpressionVariable() {}
+
+uint8_t *ExpressionVariable::GetValueBytes() {
+  const size_t byte_size = m_frozen_sp->GetByteSize();
+  if (byte_size > 0) {
+    if (m_frozen_sp->GetDataExtractor().GetByteSize() < byte_size) {
+      m_frozen_sp->GetValue().ResizeData(byte_size);
+      m_frozen_sp->GetValue().GetData(m_frozen_sp->GetDataExtractor());
+    }
+    return const_cast<uint8_t *>(
+        m_frozen_sp->GetDataExtractor().GetDataStart());
+  }
+  return nullptr;
+}
+
+PersistentExpressionState::~PersistentExpressionState() {}
+
+lldb::addr_t PersistentExpressionState::LookupSymbol(ConstString name) {
+  SymbolMap::iterator si = m_symbol_map.find(name.GetCString());
+
+  if (si != m_symbol_map.end())
+    return si->second;
+  else
+    return LLDB_INVALID_ADDRESS;
+}
+
+void PersistentExpressionState::RegisterExecutionUnit(
+    lldb::IRExecutionUnitSP &execution_unit_sp) {
+  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
+
+  m_execution_units.insert(execution_unit_sp);
+
+  if (log)
+    log->Printf("Registering JITted Functions:\n");
+
+  for (const IRExecutionUnit::JittedFunction &jitted_function :
+       execution_unit_sp->GetJittedFunctions()) {
+    if (jitted_function.m_external &&
+        jitted_function.m_name != execution_unit_sp->GetFunctionName() &&
+        jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
+      m_symbol_map[jitted_function.m_name.GetCString()] =
+          jitted_function.m_remote_addr;
+      if (log)
+        log->Printf("  Function: %s at 0x%" PRIx64 ".",
+                    jitted_function.m_name.GetCString(),
+                    jitted_function.m_remote_addr);
+    }
+  }
+
+  if (log)
+    log->Printf("Registering JIIted Symbols:\n");
+
+  for (const IRExecutionUnit::JittedGlobalVariable &global_var :
+       execution_unit_sp->GetJittedGlobalVariables()) {
+    if (global_var.m_remote_addr != LLDB_INVALID_ADDRESS) {
+      // Demangle the name before inserting it, so that lookups by the ConstStr
+      // of the demangled name will find the mangled one (needed for looking up
+      // metadata pointers.)
+      Mangled mangler(global_var.m_name);
+      mangler.GetDemangledName(lldb::eLanguageTypeUnknown);
+      m_symbol_map[global_var.m_name.GetCString()] = global_var.m_remote_addr;
+      if (log)
+        log->Printf("  Symbol: %s at 0x%" PRIx64 ".",
+                    global_var.m_name.GetCString(), global_var.m_remote_addr);
+    }
+  }
+}
+
+ConstString PersistentExpressionState::GetNextPersistentVariableName(
+    Target &target, llvm::StringRef Prefix) {
+  llvm::SmallString<64> name;
+  {
+    llvm::raw_svector_ostream os(name);
+    os << Prefix << target.GetNextPersistentVariableIndex();
+  }
+  return ConstString(name);
+}