Move platform abstraction to base library

src/mips/cpu-mips.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.
 
 // CPU specific code for arm independent of OS goes here.
 
 #include <sys/syscall.h>
 #include <unistd.h>
 
 #ifdef __mips
 #include <asm/cachectl.h>
 #endif  // #ifdef __mips
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
-#include "src/cpu.h"
+#include "src/assembler.h"
 #include "src/macro-assembler.h"
 
 #include "src/simulator.h"  // For cache flushing.
 
 namespace v8 {
 namespace internal {
 
 
-void CPU::FlushICache(void* start, size_t size) {
+void CpuFeatures::FlushICache(void* start, size_t size) {
   // Nothing to do, flushing no instructions.
   if (size == 0) {
     return;
   }
 
 #if !defined (USE_SIMULATOR)
 #if defined(ANDROID)
   // Bionic cacheflush can typically run in userland, avoiding kernel call.
   char *end = reinterpret_cast<char *>(start) + size;
   cacheflush(
@@ skipping 12 matching lines @@
   // that the Icache was flushed.
   // None of this code ends up in the snapshot so there are no issues
   // around whether or not to generate the code when building snapshots.
   Simulator::FlushICache(Isolate::Current()->simulator_i_cache(), start, size);
 #endif  // USE_SIMULATOR.
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS