runtime: Partially implement box-lambda and unbox-lambda experimental opcodes

These opcodes are not yet fully specified, and *will* change before they become shippable.
Do not write production code against experimental opcodes.

--

Implement partial interpreter support for new dex instructions box/unbox-lambda.
* box-lambda will take a closure and convert it into an Object
* unbox-lambda will take an Object and convert it to a closure

(Currently does not implement object identity or variable capture).

All new opcodes are disabled by default, use runtime option -Xexperimental-lambdas to enable them.

Change-Id: I3c15ccf8a26ccecd1d35808a8c1b4149220f6019

1 files changed, 21 insertions, 1 deletions

diff --git a/runtime/interpreter/interpreter_switch_impl.cc b/runtime/interpreter/interpreter_switch_impl.cc
index 80401977cd..78090bbe0c 100644
--- a/runtime/interpreter/interpreter_switch_impl.cc
+++ b/runtime/interpreter/interpreter_switch_impl.cc
@@ -2245,7 +2245,7 @@ JValue ExecuteSwitchImpl(Thread* self, const DexFile::CodeItem* code_item,
       }
       case Instruction::UNUSED_F4:
       case Instruction::UNUSED_F5:
-      case Instruction::UNUSED_F7 ... Instruction::UNUSED_F9: {
+      case Instruction::UNUSED_F7: {
         if (!IsExperimentalInstructionEnabled(inst)) {
           UnexpectedOpcode(inst, shadow_frame);
         }
@@ -2253,6 +2253,26 @@ JValue ExecuteSwitchImpl(Thread* self, const DexFile::CodeItem* code_item,
         CHECK(false);  // TODO(iam): Implement opcodes for lambdas
         break;
       }
+      case Instruction::BOX_LAMBDA: {
+        if (!IsExperimentalInstructionEnabled(inst)) {
+          UnexpectedOpcode(inst, shadow_frame);
+        }
+
+        PREAMBLE();
+        bool success = DoBoxLambda<do_access_check>(self, shadow_frame, inst, inst_data);
+        POSSIBLY_HANDLE_PENDING_EXCEPTION(!success, Next_2xx);
+        break;
+      }
+      case Instruction::UNBOX_LAMBDA: {
+        if (!IsExperimentalInstructionEnabled(inst)) {
+          UnexpectedOpcode(inst, shadow_frame);
+        }
+
+        PREAMBLE();
+        bool success = DoUnboxLambda<do_access_check>(self, shadow_frame, inst, inst_data);
+        POSSIBLY_HANDLE_PENDING_EXCEPTION(!success, Next_2xx);
+        break;
+      }
       case Instruction::UNUSED_3E ... Instruction::UNUSED_43:
       case Instruction::UNUSED_FA ... Instruction::UNUSED_FF:
       case Instruction::UNUSED_79: