[debugger] infrastructure for side-effect-free debug-evaluate.

src/builtins/arm/builtins-arm.cc

 // Copyright 2012 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_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 725 matching lines @@
   // Store resume mode into generator object.
   __ str(r2, FieldMemOperand(r1, JSGeneratorObject::kResumeModeOffset));
 
   // Load suspended function and context.
   __ ldr(cp, FieldMemOperand(r1, JSGeneratorObject::kContextOffset));
   __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
 
   // Flood function if we are stepping.
   Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator;
   Label stepping_prepared;
-  ExternalReference last_step_action =
-      ExternalReference::debug_last_step_action_address(masm->isolate());
-  STATIC_ASSERT(StepFrame > StepIn);
-  __ mov(ip, Operand(last_step_action));
+  ExternalReference debug_hook =
+      ExternalReference::debug_hook_on_function_call_address(masm->isolate());
+  __ mov(ip, Operand(debug_hook));
   __ ldrsb(ip, MemOperand(ip));
-  __ cmp(ip, Operand(StepIn));
-  __ b(ge, &prepare_step_in_if_stepping);
+  __ cmp(ip, Operand(0));
+  __ b(ne, &prepare_step_in_if_stepping);
 
   // Flood function if we need to continue stepping in the suspended generator.
   ExternalReference debug_suspended_generator =
       ExternalReference::debug_suspended_generator_address(masm->isolate());
   __ mov(ip, Operand(debug_suspended_generator));
   __ ldr(ip, MemOperand(ip));
   __ cmp(ip, Operand(r1));
   __ b(eq, &prepare_step_in_suspended_generator);
   __ bind(&stepping_prepared);
 
@@ skipping 47 matching lines @@
     __ Move(r3, r1);
     __ Move(r1, r4);
     __ ldr(r5, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
     __ Jump(r5);
   }
 
   __ bind(&prepare_step_in_if_stepping);
   {
     FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ Push(r1, r2, r4);
-    __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping);
+    __ CallRuntime(Runtime::kDebugOnFunctionCall);
     __ Pop(r1, r2);
     __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
   }
   __ b(&stepping_prepared);
 
   __ bind(&prepare_step_in_suspended_generator);
   {
     FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
     __ Push(r1, r2);
     __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator);
@@ skipping 2056 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM