Cherry pick SBSourceLanguage

lldb/bindings/CMakeLists.txt

@@ -3,6 +3,7 @@ file(GLOB_RECURSE SWIG_SOURCES *.swig)
 file(GLOB SWIG_HEADERS
   ${LLDB_SOURCE_DIR}/include/lldb/API/*.h
   ${LLDB_SOURCE_DIR}/include/lldb/*.h
+  ${LLDB_BINARY_DIR}/include/lldb/API/SBLanguages.h
 )
 file(GLOB SWIG_PRIVATE_HEADERS
   ${LLDB_SOURCE_DIR}/include/lldb/lldb-private*.h
@@ -36,6 +37,7 @@ set(SWIG_COMMON_FLAGS
   -w361,362,509
   -features autodoc
   -I${LLDB_SOURCE_DIR}/include
+  -I${LLDB_BINARY_DIR}/include
   -I${CMAKE_CURRENT_SOURCE_DIR}
   ${DARWIN_EXTRAS}
 )

lldb/bindings/headers.swig

@@ -36,6 +36,7 @@
 #include "lldb/API/SBHostOS.h"
 #include "lldb/API/SBInstruction.h"
 #include "lldb/API/SBInstructionList.h"
+#include "lldb/API/SBLanguages.h"
 #include "lldb/API/SBLanguageRuntime.h"
 #include "lldb/API/SBLaunchInfo.h"
 #include "lldb/API/SBLineEntry.h"

lldb/bindings/interfaces.swig

@@ -114,6 +114,7 @@
 %include "lldb/API/SBHostOS.h"
 %include "lldb/API/SBInstruction.h"
 %include "lldb/API/SBInstructionList.h"
+%include "lldb/API/SBLanguages.h"
 %include "lldb/API/SBLanguageRuntime.h"
 %include "lldb/API/SBLaunchInfo.h"
 %include "lldb/API/SBLineEntry.h"

lldb/bindings/lua/CMakeLists.txt

@@ -10,6 +10,7 @@ else()
     DEPENDS ${SWIG_SOURCES}
     DEPENDS ${SWIG_INTERFACES}
     DEPENDS ${SWIG_HEADERS}
+    DEPENDS lldb-sbapi-dwarf-enums
     COMMAND ${SWIG_EXECUTABLE}
         ${SWIG_COMMON_FLAGS}
         -I${CMAKE_CURRENT_SOURCE_DIR}

lldb/bindings/python/CMakeLists.txt

@@ -11,6 +11,7 @@ add_custom_command(
   DEPENDS ${SWIG_SOURCES}
   DEPENDS ${SWIG_INTERFACES}
   DEPENDS ${SWIG_HEADERS}
+  DEPENDS lldb-sbapi-dwarf-enums
   DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/prepare_binding_python.py
   COMMAND ${Python3_EXECUTABLE} ${LLDB_SOURCE_DIR}/bindings/prepare_bindings.py
       ${framework_arg}

lldb/cmake/modules/LLDBConfig.cmake

@@ -7,6 +7,7 @@ set(LLDB_INCLUDE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/include")
 
 set(LLDB_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(LLDB_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
+set(LLDB_OBJ_DIR ${CMAKE_CURRENT_BINARY_DIR})
 
 if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
   message(FATAL_ERROR

lldb/cmake/modules/LLDBFramework.cmake

@@ -71,6 +71,7 @@ endif()
 # At configuration time, collect headers for the framework bundle and copy them
 # into a staging directory. Later we can copy over the entire folder.
 file(GLOB public_headers ${LLDB_SOURCE_DIR}/include/lldb/API/*.h)
+set(generated_public_headers ${LLDB_OBJ_DIR}/include/lldb/API/SBLanguages.h)
 file(GLOB root_public_headers ${LLDB_SOURCE_DIR}/include/lldb/lldb-*.h)
 file(GLOB root_private_headers ${LLDB_SOURCE_DIR}/include/lldb/lldb-private*.h)
 list(REMOVE_ITEM root_public_headers ${root_private_headers})
@@ -80,6 +81,7 @@ find_program(unifdef_EXECUTABLE unifdef)
 set(lldb_header_staging ${CMAKE_CURRENT_BINARY_DIR}/FrameworkHeaders)
 foreach(header
     ${public_headers}
+    ${generated_public_headers}
     ${root_public_headers})
 
   get_filename_component(basename ${header} NAME)
@@ -103,7 +105,7 @@ foreach(header
 endforeach()
 
 # Wrap output in a target, so lldb-framework can depend on it.
-add_custom_target(liblldb-resource-headers DEPENDS ${lldb_staged_headers})
+add_custom_target(liblldb-resource-headers DEPENDS lldb-sbapi-dwarf-enums ${lldb_staged_headers})
 set_target_properties(liblldb-resource-headers PROPERTIES FOLDER "lldb misc")
 add_dependencies(liblldb liblldb-resource-headers)
 

lldb/include/lldb/API/LLDB.h

@@ -40,6 +40,7 @@
 #include "lldb/API/SBInstruction.h"
 #include "lldb/API/SBInstructionList.h"
 #include "lldb/API/SBLanguageRuntime.h"
+#include "lldb/API/SBLanguages.h"
 #include "lldb/API/SBLaunchInfo.h"
 #include "lldb/API/SBLineEntry.h"
 #include "lldb/API/SBListener.h"

lldb/include/lldb/API/SBExpressionOptions.h

@@ -10,6 +10,7 @@
 #define LLDB_API_SBEXPRESSIONOPTIONS_H
 
 #include "lldb/API/SBDefines.h"
+#include "lldb/API/SBLanguages.h"
 
 #include <vector>
 
@@ -67,6 +68,10 @@ class LLDB_API SBExpressionOptions {
   void SetTrapExceptions(bool trap_exceptions = true);
 
   void SetLanguage(lldb::LanguageType language);
+  /// Set the language using a pair of language code and version as
+  /// defined by the DWARF 6 specification.
+  /// WARNING: These codes may change until DWARF 6 is finalized.
+  void SetLanguage(SBSourceLanguageName name, uint32_t version);
 
 #ifndef SWIG
   void SetCancelCallback(lldb::ExpressionCancelCallback callback, void *baton);

lldb/include/lldb/Expression/Expression.h

@@ -47,11 +47,8 @@ class Expression {
   /// expression.  Text() should contain the definition of this function.
   virtual const char *FunctionName() = 0;
 
-  /// Return the language that should be used when parsing.  To use the
-  /// default, return eLanguageTypeUnknown.
-  virtual lldb::LanguageType Language() const {
-    return lldb::eLanguageTypeUnknown;
-  }
+  /// Return the language that should be used when parsing.
+  virtual SourceLanguage Language() const { return {}; }
 
   /// Return the Materializer that the parser should use when registering
   /// external values.

lldb/include/lldb/Expression/LLVMUserExpression.h

@@ -52,7 +52,7 @@ class LLVMUserExpression : public UserExpression {
   };
 
   LLVMUserExpression(ExecutionContextScope &exe_scope, llvm::StringRef expr,
-                     llvm::StringRef prefix, lldb::LanguageType language,
+                     llvm::StringRef prefix, SourceLanguage language,
                      ResultType desired_type,
                      const EvaluateExpressionOptions &options);
   ~LLVMUserExpression() override;

lldb/include/lldb/Expression/UserExpression.h

@@ -56,7 +56,7 @@ class UserExpression : public Expression {
   ///     If not eResultTypeAny, the type to use for the expression
   ///     result.
   UserExpression(ExecutionContextScope &exe_scope, llvm::StringRef expr,
-                 llvm::StringRef prefix, lldb::LanguageType language,
+                 llvm::StringRef prefix, SourceLanguage language,
                  ResultType desired_type,
                  const EvaluateExpressionOptions &options);
 
@@ -201,7 +201,7 @@ class UserExpression : public Expression {
   virtual bool IsParseCacheable() { return true; }
   /// Return the language that should be used when parsing.  To use the
   /// default, return eLanguageTypeUnknown.
-  lldb::LanguageType Language() const override { return m_language; }
+  SourceLanguage Language() const override { return m_language; }
 
   /// Return the desired result type of the function, or eResultTypeAny if
   /// indifferent.
@@ -314,19 +314,22 @@ class UserExpression : public Expression {
                            lldb::ProcessSP &process_sp,
                            lldb::StackFrameSP &frame_sp);
 
-  Address m_address;       ///< The address the process is stopped in.
-  std::string m_expr_text; ///< The text of the expression, as typed by the user
-  std::string m_expr_prefix; ///< The text of the translation-level definitions,
-                             ///as provided by the user
-  std::string m_fixed_text; ///< The text of the expression with fix-its applied
-                            ///- this won't be set if the fixed text doesn't
-                            ///parse.
-  lldb::LanguageType m_language; ///< The language to use when parsing
-                                 ///(eLanguageTypeUnknown means use defaults)
-  ResultType m_desired_type; ///< The type to coerce the expression's result to.
-                             ///If eResultTypeAny, inferred from the expression.
-  EvaluateExpressionOptions
-      m_options; ///< Additional options provided by the user.
+  /// The address the process is stopped in.
+  Address m_address;
+  /// The text of the expression, as typed by the user.
+  std::string m_expr_text;
+  /// The text of the translation-level definitions, as provided by the user.
+  std::string m_expr_prefix;
+  /// The text of the expression with fix-its applied this won't be set if the
+  /// fixed text doesn't parse.
+  std::string m_fixed_text;
+  /// The language to use when parsing (unknown means use defaults).
+  SourceLanguage m_language;
+  /// The type to coerce the expression's result to. If eResultTypeAny, inferred
+  /// from the expression.
+  ResultType m_desired_type;
+  /// Additional options provided by the user.
+  EvaluateExpressionOptions m_options;
 };
 
 } // namespace lldb_private

lldb/include/lldb/Symbol/TypeSystem.h

@@ -501,12 +501,10 @@ class TypeSystem : public PluginInterface,
     return IsPointerOrReferenceType(type, nullptr);
   }
 
-  virtual UserExpression *
-  GetUserExpression(llvm::StringRef expr, llvm::StringRef prefix,
-                    lldb::LanguageType language,
-                    Expression::ResultType desired_type,
-                    const EvaluateExpressionOptions &options,
-                    ValueObject *ctx_obj) {
+  virtual UserExpression *GetUserExpression(
+      llvm::StringRef expr, llvm::StringRef prefix, SourceLanguage language,
+      Expression::ResultType desired_type,
+      const EvaluateExpressionOptions &options, ValueObject *ctx_obj) {
     return nullptr;
   }
 

lldb/include/lldb/Target/StackFrame.h

@@ -1,3 +1,4 @@
+
 //===-- StackFrame.h --------------------------------------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
@@ -446,13 +447,12 @@ class StackFrame : public ExecutionContextScope,
   /// Query this frame to determine what the default language should be when
   /// parsing expressions given the execution context.
   ///
-  /// \return
-  ///   The language of the frame if known, else lldb::eLanguageTypeUnknown.
-  lldb::LanguageType GetLanguage();
+  /// \return   The language of the frame if known.
+  SourceLanguage GetLanguage();
 
-  // similar to GetLanguage(), but is allowed to take a potentially incorrect
-  // guess if exact information is not available
-  lldb::LanguageType GuessLanguage();
+  /// Similar to GetLanguage(), but is allowed to take a potentially incorrect
+  /// guess if exact information is not available.
+  SourceLanguage GuessLanguage();
 
   /// Attempt to econstruct the ValueObject for a given raw address touched by
   /// the current instruction.  The ExpressionPath should indicate how to get

lldb/include/lldb/Target/Target.h

@@ -174,6 +174,8 @@ class TargetProperties : public Properties {
 
   llvm::StringRef GetSwiftExtraClangFlags() const;
 
+  llvm::StringRef GetSwiftClangOverrideOptions() const;
+
   bool GetSwiftReadMetadataFromFileCache() const;
 
   bool GetSwiftUseReflectionSymbols() const;
@@ -243,7 +245,7 @@ class TargetProperties : public Properties {
 
   bool GetBreakpointsConsultPlatformAvoidList();
 
-  lldb::LanguageType GetLanguage() const;
+  SourceLanguage GetLanguage() const;
 
   llvm::StringRef GetExpressionPrefixContents();
 
@@ -359,9 +361,18 @@ class EvaluateExpressionOptions {
     m_execution_policy = policy;
   }
 
-  lldb::LanguageType GetLanguage() const { return m_language; }
+  SourceLanguage GetLanguage() const { return m_language; }
+
+  void SetLanguage(lldb::LanguageType language_type) {
+    m_language = SourceLanguage(language_type);
+  }
 
-  void SetLanguage(lldb::LanguageType language) { m_language = language; }
+  /// Set the language using a pair of language code and version as
+  /// defined by the DWARF 6 specification.
+  /// WARNING: These codes may change until DWARF 6 is finalized.
+  void SetLanguage(uint16_t name, uint32_t version) {
+    m_language = SourceLanguage(name, version);
+  }
 
   bool DoesCoerceToId() const { return m_coerce_to_id; }
 
@@ -524,7 +535,7 @@ class EvaluateExpressionOptions {
 
 private:
   ExecutionPolicy m_execution_policy = default_execution_policy;
-  lldb::LanguageType m_language = lldb::eLanguageTypeUnknown;
+  SourceLanguage m_language;
   std::string m_prefix;
   bool m_coerce_to_id = false;
   bool m_unwind_on_error = true;
@@ -1255,7 +1266,7 @@ class Target : public std::enable_shared_from_this<Target>,
 
   UserExpression *
   GetUserExpressionForLanguage(llvm::StringRef expr, llvm::StringRef prefix,
-                               lldb::LanguageType language,
+                               SourceLanguage language,
                                Expression::ResultType desired_type,
                                const EvaluateExpressionOptions &options,
                                ValueObject *ctx_obj, Status &error);

lldb/include/lldb/Target/ThreadPlanCallFunction.h

@@ -97,7 +97,7 @@ class ThreadPlanCallFunction : public ThreadPlan {
 
   virtual void SetStopOthers(bool new_value) override;
 
-  lldb::LanguageType GetExpressionLanguage() { return m_expression_language; }
+  SourceLanguage GetExpressionLanguage() { return m_expression_language; }
 
   bool HitErrorBackstop() { return m_hit_error_backstop; }
 
@@ -148,7 +148,7 @@ class ThreadPlanCallFunction : public ThreadPlan {
   bool m_should_clear_cxx_exception_bp;
   lldb::addr_t m_stop_address; // This is the address we stopped at.  Also set
                                // in DoTakedown;
-  lldb::LanguageType
+  SourceLanguage
       m_expression_language; // Set from the incoming ExpressionOptions.
   lldb::BreakpointSP m_error_backstop_bp_sp;
   bool m_hit_error_backstop;

lldb/include/lldb/lldb-private-types.h

@@ -96,6 +96,25 @@ struct RegisterSet {
   const uint32_t *registers;
 };
 
+/// A type-erased pair of llvm::dwarf::SourceLanguageName and version.
+struct SourceLanguage {
+  SourceLanguage() = default;
+  SourceLanguage(lldb::LanguageType language_type);
+  SourceLanguage(uint16_t name, uint32_t version)
+      : name(name), version(version) {}
+  SourceLanguage(std::optional<std::pair<uint16_t, uint32_t>> name_vers)
+      : name(name_vers ? name_vers->first : 0),
+        version(name_vers ? name_vers->second : 0) {}
+  operator bool() const { return name > 0; }
+  lldb::LanguageType AsLanguageType() const;
+  llvm::StringRef GetDescription() const;
+  bool IsC() const;
+  bool IsObjC() const;
+  bool IsCPlusPlus() const;
+  uint16_t name = 0;
+  uint32_t version = 0;
+};
+
 struct OptionEnumValueElement {
   int64_t value;
   const char *string_value;

lldb/packages/Python/lldbsuite/test/builders/builder.py

@@ -175,6 +175,9 @@ def getLLDBSwiftLibs(self):
             return ["SWIFT_LIBS_DIR={}".format(configuration.swift_libs_dir)]
         return []
 
+    def getLLDBObjRoot(self):
+        return ["LLDB_OBJ_ROOT={}".format(configuration.lldb_obj_root)]
+
     def _getDebugInfoArgs(self, debug_info):
         if debug_info is None:
             return []
@@ -216,6 +219,7 @@ def getBuildCommand(
             self.getModuleCacheSpec(),
             self.getLibCxxArgs(),
             self.getLLDBSwiftLibs(),
+            self.getLLDBObjRoot(),
             self.getCmdLine(dictionary),
         ]
         command = list(itertools.chain(*command_parts))

lldb/packages/Python/lldbsuite/test/configuration.py

@@ -127,6 +127,7 @@
 
 # LLDB library directory.
 lldb_libs_dir = None
+lldb_obj_root = None
 
 libcxx_include_dir = None
 libcxx_include_target_dir = None

lldb/packages/Python/lldbsuite/test/dotest.py

@@ -426,6 +426,7 @@ def parseOptionsAndInitTestdirs():
         configuration.lldb_module_cache_dir = os.path.join(
             configuration.test_build_dir, "module-cache-lldb"
         )
+
     if args.clang_module_cache_dir:
         configuration.clang_module_cache_dir = args.clang_module_cache_dir
     else:
@@ -438,6 +439,8 @@ def parseOptionsAndInitTestdirs():
 
     if args.lldb_libs_dir:
         configuration.lldb_libs_dir = args.lldb_libs_dir
+    if args.lldb_obj_root:
+        configuration.lldb_obj_root = args.lldb_obj_root
 
     if args.enabled_plugins:
         configuration.enabled_plugins = args.enabled_plugins

lldb/packages/Python/lldbsuite/test/dotest_args.py

@@ -247,11 +247,17 @@ def create_parser():
         metavar="The lib directory inside the Swift build directory",
         help="The lib directory inside the Swift build directory.",
     )
+    group.add_argument(
+        "--lldb-obj-root",
+        dest="lldb_obj_root",
+        metavar="path",
+        help="The path to the LLDB object files.",
+    )
     group.add_argument(
         "--lldb-libs-dir",
         dest="lldb_libs_dir",
         metavar="path",
-        help="The path to LLDB library directory (containing liblldb)",
+        help="The path to LLDB library directory (containing liblldb).",
     )
     group.add_argument(
         "--enable-plugin",