1 /*
   2  * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
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  24  */
  25 
  26 #ifndef CPU_PPC_VM_VERSION_PPC_HPP
  27 #define CPU_PPC_VM_VERSION_PPC_HPP
  28 
  29 #include "runtime/globals_extension.hpp"
  30 #include "runtime/vm_version.hpp"
  31 
  32 class VM_Version: public Abstract_VM_Version {
  33 protected:
  34   enum Feature_Flag {
  35     fsqrt,
  36     fsqrts,
  37     isel,
  38     lxarxeh,
  39     cmpb,
  40     popcntb,
  41     popcntw,
  42     fcfids,
  43     vand,
  44     lqarx,
  45     vcipher,
  46     vpmsumb,
  47     mfdscr,
  48     vsx,
  49     ldbrx,
  50     stdbrx,
  51     vshasig,
  52     rtm,
  53     darn,
  54     num_features // last entry to count features
  55   };
  56   enum Feature_Flag_Set {
  57     unknown_m             = 0,
  58     fsqrt_m               = (1 << fsqrt  ),
  59     fsqrts_m              = (1 << fsqrts ),
  60     isel_m                = (1 << isel   ),
  61     lxarxeh_m             = (1 << lxarxeh),
  62     cmpb_m                = (1 << cmpb   ),
  63     popcntb_m             = (1 << popcntb),
  64     popcntw_m             = (1 << popcntw),
  65     fcfids_m              = (1 << fcfids ),
  66     vand_m                = (1 << vand   ),
  67     lqarx_m               = (1 << lqarx  ),
  68     vcipher_m             = (1 << vcipher),
  69     vpmsumb_m             = (1 << vpmsumb),
  70     mfdscr_m              = (1 << mfdscr ),
  71     vsx_m                 = (1 << vsx    ),
  72     ldbrx_m               = (1 << ldbrx  ),
  73     stdbrx_m              = (1 << stdbrx ),
  74     vshasig_m             = (1 << vshasig),
  75     rtm_m                 = (1 << rtm    ),
  76     darn_m                = (1 << darn   ),
  77     all_features_m        = (unsigned long)-1
  78   };
  79 
  80   static bool _is_determine_features_test_running;
  81 
  82   static void print_features();
  83   static void determine_features(); // also measures cache line size
  84   static void config_dscr(); // Power 8: Configure Data Stream Control Register.
  85   static void determine_section_size();
  86   static void power6_micro_bench();
  87 public:
  88   // Initialization
  89   static void initialize();
  90 
  91   // Override Abstract_VM_Version implementation
  92   static void print_platform_virtualization_info(outputStream*);
  93 
  94   // Override Abstract_VM_Version implementation
  95   static bool use_biased_locking();
  96 
  97   static bool is_determine_features_test_running() { return _is_determine_features_test_running; }
  98   // CPU instruction support
  99   static bool has_fsqrt()   { return (_features & fsqrt_m) != 0; }
 100   static bool has_fsqrts()  { return (_features & fsqrts_m) != 0; }
 101   static bool has_isel()    { return (_features & isel_m) != 0; }
 102   static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }
 103   static bool has_cmpb()    { return (_features & cmpb_m) != 0; }
 104   static bool has_popcntb() { return (_features & popcntb_m) != 0; }
 105   static bool has_popcntw() { return (_features & popcntw_m) != 0; }
 106   static bool has_fcfids()  { return (_features & fcfids_m) != 0; }
 107   static bool has_vand()    { return (_features & vand_m) != 0; }
 108   static bool has_lqarx()   { return (_features & lqarx_m) != 0; }
 109   static bool has_vcipher() { return (_features & vcipher_m) != 0; }
 110   static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }
 111   static bool has_mfdscr()  { return (_features & mfdscr_m) != 0; }
 112   static bool has_vsx()     { return (_features & vsx_m) != 0; }
 113   static bool has_ldbrx()   { return (_features & ldbrx_m) != 0; }
 114   static bool has_stdbrx()  { return (_features & stdbrx_m) != 0; }
 115   static bool has_vshasig() { return (_features & vshasig_m) != 0; }
 116   static bool has_tm()      { return (_features & rtm_m) != 0; }
 117   static bool has_darn()    { return (_features & darn_m) != 0; }
 118 
 119   static bool has_mtfprd()  { return has_vpmsumb(); } // alias for P8
 120 
 121   // Assembler testing
 122   static void allow_all();
 123   static void revert();
 124 
 125   // POWER 8: DSCR current value.
 126   static uint64_t _dscr_val;
 127 };
 128 
 129 #endif // CPU_PPC_VM_VERSION_PPC_HPP