[Interpreter] Fix bytecode offset for stack overflows.

src/s390/builtins-s390.cc

Index: src/s390/builtins-s390.cc
diff --git a/src/s390/builtins-s390.cc b/src/s390/builtins-s390.cc
index 2d521db65e3fb6ef4dce1e0633884c4ff8c71a5c..a085140b5f2553ddb5b0f37b394ea08e6024b06a 100644
--- a/src/s390/builtins-s390.cc
+++ b/src/s390/builtins-s390.cc
@@ -1013,9 +1013,13 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
     __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
   }
 
-  // Push new.target, bytecode array and zero for bytecode array offset.
-  __ LoadImmP(r2, Operand::Zero());
-  __ Push(r5, kInterpreterBytecodeArrayRegister, r2);
+  // Load the initial bytecode offset.
+  __ mov(kInterpreterBytecodeOffsetRegister,
+         Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
+
+  // Push new.target, bytecode array and Smi tagged bytecode array offset.
+  __ SmiTag(r4, kInterpreterBytecodeOffsetRegister);
+  __ Push(r5, kInterpreterBytecodeArrayRegister, r4);
 
   // Allocate the local and temporary register file on the stack.
   {
@@ -1047,12 +1051,8 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
     __ bind(&no_args);
   }
 
-  // Load accumulator, register file, bytecode offset, dispatch table into
-  // registers.
+  // Load accumulator and dispatch table into registers.
   __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
-  __ AddP(r4, fp, Operand(InterpreterFrameConstants::kRegisterFileFromFp));
-  __ mov(kInterpreterBytecodeOffsetRegister,
-         Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
   __ mov(kInterpreterDispatchTableRegister,
          Operand(ExternalReference::interpreter_dispatch_table_address(
              masm->isolate())));