Contribution of PowerPC port (continuation of 422063005) - AIX Common1

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
 #include <linux/auxvec.h>  // AT_HWCAP
 #endif
 #if V8_GLIBC_PREREQ(2, 16)
 #include <sys/auxv.h>  // getauxval()
 #endif
 #if V8_OS_QNX
 #include <sys/syspage.h>  // cpuinfo
 #endif
 #if V8_OS_LINUX && V8_HOST_ARCH_PPC
 #include <elf.h>
 #endif
+#if V8_OS_AIX
+#include <sys/systemcfg.h>  // _system_configuration
+#ifndef POWER_8
+#define POWER_8 0x10000
+#endif
+#endif
 #if V8_OS_POSIX
 #include <unistd.h>  // sysconf()
 #endif
 
 #include <ctype.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <algorithm>
@@ skipping 604 matching lines @@
       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;
     }
   }
 
-#endif  // V8_OS_LINUX
+#elif V8_OS_AIX
+  switch (_system_configuration.implementation) {
+    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 v8::base