PPC: Enable P9 and implement mod[s|u][d|w] instr

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_LINUX
@@ skipping 652 matching lines @@
         case AT_DCACHEBSIZE:
           dcache_line_size_ = entry.a_un.a_val;
           break;
       }
     }
     fclose(fp);
   }
 
   part_ = -1;
   if (auxv_cpu_type) {
-    if (strcmp(auxv_cpu_type, "power8") == 0) {
+    if (strcmp(auxv_cpu_type, "power9") == 0) {
+      part_ = PPC_POWER9;
+    } else if (strcmp(auxv_cpu_type, "power8") == 0) {
       part_ = PPC_POWER8;
     } else if (strcmp(auxv_cpu_type, "power7") == 0) {
       part_ = PPC_POWER7;
     } else if (strcmp(auxv_cpu_type, "power6") == 0) {
       part_ = PPC_POWER6;
     } else if (strcmp(auxv_cpu_type, "power5") == 0) {
       part_ = PPC_POWER5;
     } else if (strcmp(auxv_cpu_type, "ppc970") == 0) {
       part_ = PPC_G5;
     } else if (strcmp(auxv_cpu_type, "ppc7450") == 0) {
       part_ = PPC_G4;
     } else if (strcmp(auxv_cpu_type, "pa6t") == 0) {
       part_ = PPC_PA6T;
     }
   }
 
 #elif V8_OS_AIX
   switch (_system_configuration.implementation) {
+    case POWER_9:
+      part_ = PPC_POWER9;
+      break;
     case POWER_8:
       part_ = PPC_POWER8;
       break;
     case POWER_7:
       part_ = PPC_POWER7;
       break;
     case POWER_6:
       part_ = PPC_POWER6;
       break;
     case POWER_5:
       part_ = PPC_POWER5;
       break;
   }
 #endif  // V8_OS_AIX
 #endif  // !USE_SIMULATOR
 #endif  // V8_HOST_ARCH_PPC
 }
 
 }  // namespace base
 }  // namespace v8