Make fast_exp take an Isolate* paramter

src/ppc/codegen-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.
 
 #include "src/ppc/codegen-ppc.h"
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/macro-assembler.h"
 #include "src/ppc/simulator-ppc.h"
 
 namespace v8 {
 namespace internal {
 
 
 #define __ masm.
 
 
 #if defined(USE_SIMULATOR)
-byte* fast_exp_ppc_machine_code = NULL;
-double fast_exp_simulator(double x) {
-  return Simulator::current(Isolate::Current())
+byte* fast_exp_ppc_machine_code = nullptr;
+double fast_exp_simulator(double x, Isolate* isolate) {
+  return Simulator::current(isolate)
       ->CallFPReturnsDouble(fast_exp_ppc_machine_code, x, 0);
 }
 #endif
 
 
-UnaryMathFunction CreateExpFunction() {
-  if (!FLAG_fast_math) return &std::exp;
+UnaryMathFunctionWithIsolate CreateExpFunction(Isolate* isolate) {
   size_t actual_size;
   byte* buffer =
       static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true));
-  if (buffer == NULL) return &std::exp;
+  if (buffer == nullptr) return nullptr;
   ExternalReference::InitializeMathExpData();
 
-  MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size));
+  MacroAssembler masm(nullptr, buffer, static_cast<int>(actual_size));
 
   {
     DoubleRegister input = d1;
     DoubleRegister result = d2;
     DoubleRegister double_scratch1 = d3;
     DoubleRegister double_scratch2 = d4;
     Register temp1 = r7;
     Register temp2 = r8;
     Register temp3 = r9;
 
 // Called from C
     __ function_descriptor();
 
     __ Push(temp3, temp2, temp1);
     MathExpGenerator::EmitMathExp(&masm, input, result, double_scratch1,
                                   double_scratch2, temp1, temp2, temp3);
     __ Pop(temp3, temp2, temp1);
     __ fmr(d1, result);
     __ Ret();
   }
 
   CodeDesc desc;
   masm.GetCode(&desc);
 #if !ABI_USES_FUNCTION_DESCRIPTORS
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 #endif
 
-  Assembler::FlushICacheWithoutIsolate(buffer, actual_size);
+  Assembler::FlushICache(isolate, buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
 
 #if !defined(USE_SIMULATOR)
-  return FUNCTION_CAST<UnaryMathFunction>(buffer);
+  return FUNCTION_CAST<UnaryMathFunctionWithIsolate>(buffer);
 #else
   fast_exp_ppc_machine_code = buffer;
   return &fast_exp_simulator;
 #endif
 }
 
 
 UnaryMathFunction CreateSqrtFunction() {
 #if defined(USE_SIMULATOR)
   return &std::sqrt;
@@ skipping 594 matching lines @@
     patcher.masm()->Jump(r3);
     for (int i = 0; i < kCodeAgingSequenceNops; i++) {
       patcher.masm()->nop();
     }
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC