Out-of-line constant pool on Arm: Stage 3 - Set Constant Pool Pointer on Function Entry

src/arm/stub-cache-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 829 matching lines @@
   //  -- sp[(argc + 6) * 4] : first JS argument
   //  -- sp[(argc + 7) * 4] : receiver
   // -----------------------------------
   typedef FunctionCallbackArguments FCA;
   // Save calling context.
   __ str(cp, MemOperand(sp, FCA::kContextSaveIndex * kPointerSize));
   // Get the function and setup the context.
   Handle<JSFunction> function = optimization.constant_function();
   __ Move(r5, function);
   __ ldr(cp, FieldMemOperand(r5, JSFunction::kContextOffset));
+  __ LoadConstantPoolPointer(r5);
   __ str(r5, MemOperand(sp, FCA::kCalleeIndex * kPointerSize));
 
   // Construct the FunctionCallbackInfo.
   Handle<CallHandlerInfo> api_call_info = optimization.api_call_info();
   Handle<Object> call_data(api_call_info->data(), masm->isolate());
   if (masm->isolate()->heap()->InNewSpace(*call_data)) {
     __ Move(r0, api_call_info);
     __ ldr(r6, FieldMemOperand(r0, CallHandlerInfo::kDataOffset));
   } else {
     __ Move(r6, call_data);
@@ skipping 1895 matching lines @@
 
   // Patch the receiver on the stack with the global proxy if
   // necessary.
   if (object->IsGlobalObject()) {
     __ ldr(r3, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset));
     __ str(r3, MemOperand(sp, argc * kPointerSize));
   }
 
   // Set up the context (function already in r1).
   __ ldr(cp, FieldMemOperand(r1, JSFunction::kContextOffset));
+  __ LoadConstantPoolPointer(r1);
 
   // Jump to the cached code (tail call).
   Counters* counters = isolate()->counters();
   __ IncrementCounter(counters->call_global_inline(), 1, r3, r4);
   ParameterCount expected(function->shared()->formal_parameter_count());
   CallKind call_kind = CallICBase::Contextual::decode(extra_state_)
       ? CALL_AS_FUNCTION
       : CALL_AS_METHOD;
   // We call indirectly through the code field in the function to
   // allow recompilation to take effect without changing any of the
@@ skipping 86 matching lines @@
       // If we generate a global code snippet for deoptimization only, remember
       // the place to continue after deoptimization.
       masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
     }
 
     // We have to return the passed value, not the return value of the setter.
     __ pop(r0);
 
     // Restore context register.
     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+    __ RestoreConstantPoolPointer();
   }
   __ Ret();
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm())
 
 
 Handle<Code> StoreStubCompiler::CompileStoreInterceptor(
@@ skipping 113 matching lines @@
       ParameterCount actual(0);
       ParameterCount expected(getter);
       __ InvokeFunction(getter, expected, actual,
                         CALL_FUNCTION, NullCallWrapper(), CALL_AS_METHOD);
     } else {
       // If we generate a global code snippet for deoptimization only, remember
       // the place to continue after deoptimization.
       masm->isolate()->heap()->SetGetterStubDeoptPCOffset(masm->pc_offset());
     }
 
-    // Restore context register.
+    // Restore context and pointer pool register.
     __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
+    __ RestoreConstantPoolPointer();
   }
   __ Ret();
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm())
 
 
 Handle<Code> LoadStubCompiler::CompileLoadGlobal(
@@ skipping 151 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM