[Interpreter] Add support for FunctionEntryHook.

src/ppc/builtins-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 951 matching lines @@
 //   o r6: the new target
 //   o cp: our context
 //   o pp: the caller's constant pool pointer (if enabled)
 //   o fp: the caller's frame pointer
 //   o sp: stack pointer
 //   o lr: return address
 //
 // The function builds an interpreter frame.  See InterpreterFrameConstants in
 // frames.h for its layout.
 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
+  ProfileEntryHookStub::MaybeCallEntryHook(masm);
+
   // Open a frame scope to indicate that there is a frame on the stack.  The
   // MANUAL indicates that the scope shouldn't actually generate code to set up
   // the frame (that is done below).
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ PushStandardFrame(r4);
 
   // Get the bytecode array from the function object and load the pointer to the
   // first entry into kInterpreterBytecodeRegister.
   __ LoadP(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
   Label array_done;
@@ skipping 44 matching lines @@
     __ LoadRoot(r6, Heap::kUndefinedValueRootIndex);
     __ ShiftRightImm(r5, r5, Operand(kPointerSizeLog2), SetRC);
     __ beq(&no_args, cr0);
     __ mtctr(r5);
     __ bind(&loop);
     __ push(r6);
     __ bdnz(&loop);
     __ bind(&no_args);
   }
 
-  // TODO(rmcilroy): List of things not currently dealt with here but done in
-  // fullcodegen's prologue:
-  //  - Call ProfileEntryHookStub when isolate has a function_entry_hook.
-  //  - Code aging of the BytecodeArray object.
-
   // Load accumulator, register file, bytecode offset, dispatch table into
   // registers.
   __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
   __ addi(kInterpreterRegisterFileRegister, fp,
           Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
   __ mov(kInterpreterBytecodeOffsetRegister,
          Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
   __ mov(kInterpreterDispatchTableRegister,
          Operand(ExternalReference::interpreter_dispatch_table_address(
              masm->isolate())));
@@ skipping 1664 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC