[Interpreter] Pass context to interpreter bytecode handlers and add LoadConstextSlot

src/ia32/builtins-ia32.cc

Index: src/ia32/builtins-ia32.cc
diff --git a/src/ia32/builtins-ia32.cc b/src/ia32/builtins-ia32.cc
index 15f3ace14ec28edffe5ab5a09f0ddb26bff301dc..392ed430e8a8a3ef5a65510fb96789cc7c530fcf 100644
--- a/src/ia32/builtins-ia32.cc
+++ b/src/ia32/builtins-ia32.cc
@@ -725,8 +725,9 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ add(kInterpreterDispatchTableRegister,
          Immediate(FixedArray::kHeaderSize - kHeapObjectTag));
 
-  // TODO(rmcilroy) Push our context as a stack located parameter of the
-  // bytecode handler.
+  // Push context as a stack located parameter to the bytecode handler.
+  DCHECK_EQ(-1, kInterpreterContextSpillSlot);
+  __ push(esi);
 
   // Dispatch to the first bytecode handler for the function.
   __ movzx_b(esi, Operand(kInterpreterBytecodeArrayRegister,