Capture receiver in generator object

src/arm/full-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1980 matching lines @@
   __ ldr(r3, FieldMemOperand(r1, JSGeneratorObject::kContinuationOffset));
   STATIC_ASSERT(JSGeneratorObject::kGeneratorExecuting <= 0);
   STATIC_ASSERT(JSGeneratorObject::kGeneratorClosed <= 0);
   __ cmp(r3, Operand(Smi::FromInt(0)));
   __ b(le, &wrong_state);
 
   // Load suspended function and context.
   __ ldr(cp, FieldMemOperand(r1, JSGeneratorObject::kContextOffset));
   __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
 
-  // Push holes for arguments to generator function.
+  // Load receiver and store as the first argument.
+  __ ldr(r2, FieldMemOperand(r1, JSGeneratorObject::kReceiverOffset));
+  __ push(r2);
+
+  // Push holes for the rest of the arguments to the generator function.
   __ ldr(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
   __ ldr(r3,
          FieldMemOperand(r3, SharedFunctionInfo::kFormalParameterCountOffset));
   __ LoadRoot(r2, Heap::kTheHoleValueRootIndex);
-  Label push_argument_holes;
+  Label push_argument_holes, push_frame;
   __ bind(&push_argument_holes);
+  __ sub(r3, r3, Operand(1), SetCC);
+  __ b(mi, &push_frame);
   __ push(r2);
-  __ sub(r3, r3, Operand(1), SetCC);
-  __ b(pl, &push_argument_holes);
+  __ jmp(&push_argument_holes);
 
   // Enter a new JavaScript frame, and initialize its slots as they were when
   // the generator was suspended.
-  Label push_frame, resume_frame;
+  Label resume_frame;
   __ bind(&push_frame);
   __ bl(&resume_frame);
   __ jmp(&done);
   __ bind(&resume_frame);
   __ push(lr);  // Return address.
   __ push(fp);  // Caller's frame pointer.
   __ mov(fp, sp);
   __ push(cp);  // Callee's context.
   __ push(r4);  // Callee's JS Function.
 
@@ skipping 2672 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM