Reland PPC portion of "Detect cache line size on Linux for PPC hosts."

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 253 matching lines @@
 
 
 CpuFeatureScope::~CpuFeatureScope() {
   assembler_->set_enabled_cpu_features(old_enabled_);
 }
 #endif
 
 
 bool CpuFeatures::initialized_ = false;
 unsigned CpuFeatures::supported_ = 0;
-unsigned CpuFeatures::cache_line_size_ = 0;
+unsigned CpuFeatures::icache_line_size_ = 0;
+unsigned CpuFeatures::dcache_line_size_ = 0;
 
 // -----------------------------------------------------------------------------
 // Implementation of Label
 
 int Label::pos() const {
   if (pos_ < 0) return -pos_ - 1;
   if (pos_ > 0) return  pos_ - 1;
   UNREACHABLE();
   return 0;
 }
@@ skipping 1787 matching lines @@
 
 
 void Assembler::DataAlign(int m) {
   DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
   while ((pc_offset() & (m - 1)) != 0) {
     db(0);
   }
 }
 }  // namespace internal
 }  // namespace v8