Add mips64 port.

src/base/cpu.cc

 // Copyright 2013 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/base/cpu.h"
 
 #if V8_LIBC_MSVCRT
 #include <intrin.h>  // __cpuid()
 #endif
 #if V8_OS_POSIX
@@ skipping 38 matching lines @@
   __asm__ volatile (
     "cpuid \n\t"
     : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
     : "a"(info_type)
   );
 #endif  // defined(__i386__) && defined(__pic__)
 }
 
 #endif  // !V8_LIBC_MSVCRT
 
-#elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_ARM64 || V8_HOST_ARCH_MIPS
+#elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_ARM64 \
+    || V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64
 
 #if V8_OS_LINUX
 
 #if V8_HOST_ARCH_ARM
 
 // See <uapi/asm/hwcap.h> kernel header.
 /*
  * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
  */
 #define HWCAP_SWP (1 << 0)
@@ skipping 129 matching lines @@
       result[len] = '\0';
     }
     return result;
   }
 
  private:
   char* data_;
   size_t datalen_;
 };
 
-#if V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS
+#if V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64
 
 // Checks that a space-separated list of items contains one given 'item'.
 static bool HasListItem(const char* list, const char* item) {
   ssize_t item_len = strlen(item);
   const char* p = list;
   if (p != NULL) {
     while (*p != '\0') {
       // Skip whitespace.
       while (isspace(*p)) ++p;
 
       // Find end of current list item.
       const char* q = p;
       while (*q != '\0' && !isspace(*q)) ++q;
 
       if (item_len == q - p && memcmp(p, item, item_len) == 0) {
         return true;
       }
 
       // Skip to next item.
       p = q;
     }
   }
   return false;
 }
 
-#endif  // V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS
+#endif  // V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64
 
 #endif  // V8_OS_LINUX
 
 #endif  // V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
 
 CPU::CPU() : stepping_(0),
              model_(0),
              ext_model_(0),
              family_(0),
              ext_family_(0),
@@ skipping 201 matching lines @@
     has_neon_ = true;
     has_vfp3_ = has_vfp_;
 #ifdef ARM_CPU_FLAG_VFP_D32
     has_vfp3_d32_ = (cpu_flags & ARM_CPU_FLAG_VFP_D32) != 0;
 #endif
   }
   has_idiva_ = (cpu_flags & ARM_CPU_FLAG_IDIV) != 0;
 
 #endif  // V8_OS_LINUX
 
-#elif V8_HOST_ARCH_MIPS
+#elif V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64
 
   // Simple detection of FPU at runtime for Linux.
   // It is based on /proc/cpuinfo, which reveals hardware configuration
   // to user-space applications.  According to MIPS (early 2010), no similar
   // facility is universally available on the MIPS architectures,
   // so it's up to individual OSes to provide such.
   CPUInfo cpu_info;
   char* cpu_model = cpu_info.ExtractField("cpu model");
   has_fpu_ = HasListItem(cpu_model, "FPU");
   delete[] cpu_model;
@@ skipping 21 matching lines @@
     if (end == part) {
       part_ = 0;
     }
     delete[] part;
   }
 
 #endif
 }
 
 } }  // namespace v8::base