[interpreter] First implementation of stack unwinding.

src/mips64/builtins-mips64.cc

Index: src/mips64/builtins-mips64.cc
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index fecf3f7334fd70e7628ed14879df4e3d1619586d..e02fbe353ce0a60fb24a030bff2b81c6f20ee22b 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -1046,25 +1046,7 @@ void Builtins::Generate_InterpreterPushArgsAndConstruct(MacroAssembler* masm) {
 }
 
 
-static void Generate_InterpreterNotifyDeoptimizedHelper(
-    MacroAssembler* masm, Deoptimizer::BailoutType type) {
-  // Enter an internal frame.
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    __ push(kInterpreterAccumulatorRegister);  // Save accumulator register.
-
-    // Pass the deoptimization type to the runtime system.
-    __ li(a1, Operand(Smi::FromInt(static_cast<int>(type))));
-    __ push(a1);
-    __ CallRuntime(Runtime::kNotifyDeoptimized);
-
-    __ pop(kInterpreterAccumulatorRegister);  // Restore accumulator register.
-    // Tear down internal frame.
-  }
-
-  // Drop state (we don't use this for interpreter deopts).
-  __ Drop(1);
-
+static void Generate_EnterBytecodeDispatch(MacroAssembler* masm) {
   // Initialize register file register and dispatch table register.
   __ Daddu(kInterpreterRegisterFileRegister, fp,
            Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
@@ -1117,6 +1099,30 @@ static void Generate_InterpreterNotifyDeoptimizedHelper(
 }
 
 
+static void Generate_InterpreterNotifyDeoptimizedHelper(
+    MacroAssembler* masm, Deoptimizer::BailoutType type) {
+  // Enter an internal frame.
+  {
+    FrameScope scope(masm, StackFrame::INTERNAL);
+    __ push(kInterpreterAccumulatorRegister);  // Save accumulator register.
+
+    // Pass the deoptimization type to the runtime system.
+    __ li(a1, Operand(Smi::FromInt(static_cast<int>(type))));
+    __ push(a1);
+    __ CallRuntime(Runtime::kNotifyDeoptimized);
+
+    __ pop(kInterpreterAccumulatorRegister);  // Restore accumulator register.
+    // Tear down internal frame.
+  }
+
+  // Drop state (we don't use this for interpreter deopts).
+  __ Drop(1);
+
+  // Enter the bytecode dispatch.
+  Generate_EnterBytecodeDispatch(masm);
+}
+
+
 void Builtins::Generate_InterpreterNotifyDeoptimized(MacroAssembler* masm) {
   Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::EAGER);
 }
@@ -1132,6 +1138,11 @@ void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) {
 }
 
 
+void Builtins::Generate_InterpreterEnterExceptionHandler(MacroAssembler* masm) {
+  Generate_EnterBytecodeDispatch(masm);
+}
+
+
 void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileLazy);
   GenerateTailCallToReturnedCode(masm);