Support for OCaml native debugging
This introduces basic support for debugging OCaml binaries.
Use of the native compiler with DWARF emission support (see
https://github.com/ocaml/ocaml/pull/574) is required.
Available variables are considered as 64 bits unsigned integers,
their interpretation will be left to a OCaml-made debugging layer.
Differential revision: https://reviews.llvm.org/D22132
llvm-svn: 277443
diff --git a/lldb/source/Plugins/Language/OCaml/OCamlLanguage.cpp b/lldb/source/Plugins/Language/OCaml/OCamlLanguage.cpp
new file mode 100644
index 0000000..abc6c8b
--- /dev/null
+++ b/lldb/source/Plugins/Language/OCaml/OCamlLanguage.cpp
@@ -0,0 +1,78 @@
+//===-- OCamlLanguage.cpp ----------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// C Includes
+#include <string.h>
+// C++ Includes
+#include <functional>
+#include <mutex>
+
+// Other libraries and framework includes
+#include "llvm/ADT/StringRef.h"
+
+// Project includes
+#include "OCamlLanguage.h"
+#include "lldb/Core/ConstString.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/DataFormatters/DataVisualization.h"
+#include "lldb/DataFormatters/FormattersHelpers.h"
+#include "lldb/Symbol/OCamlASTContext.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+void
+OCamlLanguage::Initialize()
+{
+ PluginManager::RegisterPlugin(GetPluginNameStatic(), "OCaml Language", CreateInstance);
+}
+
+void
+OCamlLanguage::Terminate()
+{
+ PluginManager::UnregisterPlugin(CreateInstance);
+}
+
+lldb_private::ConstString
+OCamlLanguage::GetPluginNameStatic()
+{
+ static ConstString g_name("OCaml");
+ return g_name;
+}
+
+lldb_private::ConstString
+OCamlLanguage::GetPluginName()
+{
+ return GetPluginNameStatic();
+}
+
+uint32_t
+OCamlLanguage::GetPluginVersion()
+{
+ return 1;
+}
+
+Language *
+OCamlLanguage::CreateInstance(lldb::LanguageType language)
+{
+ if (language == eLanguageTypeOCaml)
+ return new OCamlLanguage();
+ return nullptr;
+}
+
+bool
+OCamlLanguage::IsNilReference(ValueObject &valobj)
+{
+ if (!valobj.GetCompilerType().IsReferenceType())
+ return false;
+
+ // If we failed to read the value then it is not a nil reference.
+ return valobj.GetValueAsUnsigned(UINT64_MAX) == 0;
+}
+