Basic GDB JIT Interface integration.

src/full-codegen.cc

Index: src/full-codegen.cc
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 58540f07bc663a6ef61f0fc7a55f2f66257d7419..2f847ac80f6b7439cf7f322ff07290bc1cdc28ec 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -286,6 +286,9 @@ bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
   CodeGenerator::MakeCodePrologue(info);
   const int kInitialBufferSize = 4 * KB;
   MacroAssembler masm(NULL, kInitialBufferSize);
+#ifdef ENABLE_GDBJIT_INTERFACE
+  masm.positions_recorder()->StartGDBJITLineInfoRecording();
+#endif
 
   FullCodeGenerator cgen(&masm);
   cgen.Generate(info);
@@ -304,6 +307,14 @@ bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
   code->set_stack_check_table_start(table_offset);
   CodeGenerator::PrintCode(code, info);
   info->SetCode(code);  // may be an empty handle.
+#ifdef ENABLE_GDBJIT_INTERFACE
+  if (!code.is_null()) {
+    GDBJITLineInfo* lineinfo =
+        masm.positions_recorder()->DetachGDBJITLineInfo();
+
+    GDBJIT(RegisterDetailedLineInfo(*code, lineinfo));
+  }
+#endif
   return !code.is_null();
 }