8031290: Adjust call to getisax() for additional words returned

Reviewed-by: kvn

src/cpu/sparc/vm/vm_version_sparc.hpp

@@ -49,7 +49,8 @@ protected:
     M_family             = 15,
     T_family             = 16,
     T1_model             = 17,
-    aes_instructions     = 18
+    sparc5_instructions  = 18,
+    aes_instructions     = 19
   };
 
   enum Feature_Flag_Set {
@@ -74,6 +75,7 @@ protected:
     M_family_m              = 1 << M_family,
     T_family_m              = 1 << T_family,
     T1_model_m              = 1 << T1_model,
+    sparc5_instructions_m   = 1 << sparc5_instructions,
     aes_instructions_m      = 1 << aes_instructions,
 
     generic_v8_m        = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
@@ -125,6 +127,7 @@ public:
   static bool has_vis3()                { return (_features & vis3_instructions_m) != 0; }
   static bool has_blk_init()            { return (_features & blk_init_instructions_m) != 0; }
   static bool has_cbcond()              { return (_features & cbcond_instructions_m) != 0; }
+  static bool has_sparc5_instr()        { return (_features & sparc5_instructions_m) != 0; }
   static bool has_aes()                 { return (_features & aes_instructions_m) != 0; }
 
   static bool supports_compare_and_exchange()
@@ -136,6 +139,7 @@ public:
 
   static bool is_M_series()             { return is_M_family(_features); }
   static bool is_T4()                   { return is_T_family(_features) && has_cbcond(); }
+  static bool is_T7()                   { return is_T_family(_features) && has_sparc5_instr(); }
 
   // Fujitsu SPARC64
   static bool is_sparc64()              { return (_features & sparc64_family_m) != 0; }
@@ -155,7 +159,7 @@ public:
   static const char* cpu_features()     { return _features_str; }
 
   static intx prefetch_data_size()  {
-    return is_T4() ? 32 : 64;  // default prefetch block size on sparc
+    return is_T4() && !is_T7() ? 32 : 64;  // default prefetch block size on sparc
   }
 
   // Prefetch

src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp

@@ -75,13 +75,19 @@ int VM_Version::platform_features(int features) {
     do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
 
     // Extract valid instruction set extensions.
-    uint_t av;
-    uint_t avn = os::Solaris::getisax(&av, 1);
-    assert(avn == 1, "should only return one av");
+    uint_t avs[2];
+    uint_t avn = os::Solaris::getisax(avs, 2);
+    assert(avn <= 2, "should return two or less av's");
+    uint_t av = avs[0];
 
 #ifndef PRODUCT
-    if (PrintMiscellaneous && Verbose)
-      tty->print_cr("getisax(2) returned: " PTR32_FORMAT, av);
+    if (PrintMiscellaneous && Verbose) {
+      tty->print("getisax(2) returned: " PTR32_FORMAT, av);
+      if (avn > 1) {
+        tty->print(", " PTR32_FORMAT, avs[1]);
+      }
+      tty->cr();
+    }
 #endif
 
     if (av & AV_SPARC_MUL32)  features |= hardware_mul32_m;
@@ -91,6 +97,13 @@ int VM_Version::platform_features(int features) {
     if (av & AV_SPARC_POPC)   features |= hardware_popc_m;
     if (av & AV_SPARC_VIS)    features |= vis1_instructions_m;
     if (av & AV_SPARC_VIS2)   features |= vis2_instructions_m;
+    if (avn > 1) {
+      uint_t av2 = avs[1];
+#ifndef AV2_SPARC_SPARC5
+#define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */
+#endif
+      if (av2 & AV2_SPARC_SPARC5)       features |= sparc5_instructions_m;
+    }
 
     // Next values are not defined before Solaris 10
     // but Solaris 8 is used for jdk6 update builds.