gcc/config/sparc/driver-sparc.c

   1 /* Subroutines for the gcc driver.
   2    Copyright (C) 2011-2015 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24
  25 static const struct cpu_names {
  26   const char *const name;
  27   const char *const cpu;
  28 } cpu_names[] = {
  29 #if defined __sun__ && defined __svr4__
  30   { "TMS390S10",        "supersparc" }, /* Texas Instruments microSPARC I */
  31   { "TMS390Z50",        "supersparc" }, /* Texas Instruments SuperSPARC I */
  32   { "TMS390Z55",        "supersparc" }, /* Texas Instruments
  33                                            SuperSPARC I with SuperCache */
  34   { "MB86904",          "supersparc" }, /* Fujitsu microSPARC II */
  35   { "MB86907",          "supersparc" }, /* Fujitsu TurboSPARC */
  36   { "RT623",            "hypersparc" }, /* Ross hyperSPARC */
  37   { "RT625",            "hypersparc" },
  38   { "RT626",            "hypersparc" },
  39   { "UltraSPARC-I",     "ultrasparc" },
  40   { "UltraSPARC-II",    "ultrasparc" },
  41   { "UltraSPARC-IIe",   "ultrasparc" },
  42   { "UltraSPARC-IIi",   "ultrasparc" },
  43   { "SPARC64-III",      "ultrasparc" },
  44   { "SPARC64-IV",       "ultrasparc" },
  45   { "UltraSPARC-III",   "ultrasparc3" },
  46   { "UltraSPARC-III+",  "ultrasparc3" },
  47   { "UltraSPARC-IIIi",  "ultrasparc3" },
  48   { "UltraSPARC-IIIi+", "ultrasparc3" },
  49   { "UltraSPARC-IV",    "ultrasparc3" },
  50   { "UltraSPARC-IV+",   "ultrasparc3" },
  51   { "SPARC64-V",        "ultrasparc3" },
  52   { "SPARC64-VI",       "ultrasparc3" },
  53   { "SPARC64-VII",      "ultrasparc3" },
  54   { "UltraSPARC-T1",    "niagara" },
  55   { "UltraSPARC-T2",    "niagara2" },
  56   { "UltraSPARC-T2",    "niagara2" },
  57   { "UltraSPARC-T2+",   "niagara2" },
  58   { "SPARC-T3",         "niagara3" },
  59   { "SPARC-T4",         "niagara4" },
  60 #else
  61   { "SuperSparc",       "supersparc" },
  62   { "HyperSparc",       "hypersparc" },
  63   { "SpitFire",         "ultrasparc" },
  64   { "BlackBird",        "ultrasparc" },
  65   { "Sabre",            "ultrasparc" },
  66   { "Hummingbird",      "ultrasparc" },
  67   { "Cheetah",          "ultrasparc3" },
  68   { "Jalapeno",         "ultrasparc3" },
  69   { "Jaguar",           "ultrasparc3" },
  70   { "Panther",          "ultrasparc3" },
  71   { "Serrano",          "ultrasparc3" },
  72   { "UltraSparc T1",    "niagara" },
  73   { "UltraSparc T2",    "niagara2" },
  74   { "UltraSparc T3",    "niagara3" },
  75   { "UltraSparc T4",    "niagara4" },
  76 #endif
  77   { NULL,       NULL }
  78   };
  79
  80 #if defined __sun__ && defined __svr4__
  81 #include <kstat.h>
  82 #endif
  83
  84 /* This will be called by the spec parser in gcc.c when it sees
  85    a %:local_cpu_detect(args) construct.  Currently it will be called
  86    with either "cpu" or "tune" as argument depending on if -mcpu=native
  87    or -mtune=native is to be substituted.
  88
  89    It returns a string containing new command line parameters to be
  90    put at the place of the above two options, depending on what CPU
  91    this is executed.  E.g. "-mcpu=ultrasparc3" on an UltraSPARC III for
  92    -mcpu=native.  If the routine can't detect a known processor,
  93    the -mcpu or -mtune option is discarded.
  94
  95    ARGC and ARGV are set depending on the actual arguments given
  96    in the spec.  */
  97 const char *
  98 host_detect_local_cpu (int argc, const char **argv)
  99 {
 100   const char *cpu = NULL;
 101 #if defined __sun__ && defined __svr4__
 102   char *buf = NULL;
 103   kstat_ctl_t *kc;
 104   kstat_t *ksp;
 105   kstat_named_t *brand = NULL;
 106 #else
 107   char buf[128];
 108   FILE *f;
 109 #endif
 110   int i;
 111
 112   if (argc < 1)
 113     return NULL;
 114
 115   if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune"))
 116     return NULL;
 117
 118 #if defined __sun__ && defined __svr4__
 119   kc = kstat_open ();
 120   if (kc != NULL)
 121     {
 122       ksp = kstat_lookup (kc, CONST_CAST2 (char *, const char *, "cpu_info"),
 123                           -1, NULL);
 124       if (ksp != NULL
 125           && kstat_read (kc, ksp, NULL) != -1
 126           && ksp->ks_type == KSTAT_TYPE_NAMED)
 127         brand = (kstat_named_t *)
 128           kstat_data_lookup (ksp, CONST_CAST2 (char *, const char *, "brand"));
 129       /* "brand" was only introduced in Solaris 10.  */
 130       if (brand == NULL)
 131           brand = (kstat_named_t *)
 132             kstat_data_lookup (ksp, CONST_CAST2 (char *, const char *,
 133                                                  "implementation"));
 134       /* KSTAT_DATA_STRING was introduced in Solaris 9.  */
 135 #ifdef KSTAT_DATA_STRING
 136       if (brand != NULL && brand->data_type == KSTAT_DATA_STRING)
 137         buf = KSTAT_NAMED_STR_PTR (brand);
 138 #else
 139       if (brand != NULL && brand->data_type == KSTAT_DATA_CHAR)
 140         buf = brand->value.c;
 141 #endif
 142     }
 143   kstat_close (kc);
 144
 145   for (i = 0; cpu_names[i].name != NULL; i++)
 146     if (strcmp (buf, cpu_names[i].name) == 0)
 147       cpu = cpu_names[i].cpu;
 148 #else
 149   f = fopen ("/proc/cpuinfo", "r");
 150   if (f == NULL)
 151     return NULL;
 152
 153   while (fgets (buf, sizeof (buf), f) != NULL)
 154     if (strncmp (buf, "cpu\t\t:", sizeof ("cpu\t\t:") - 1) == 0)
 155       {
 156         for (i = 0; cpu_names [i].name; i++)
 157           if (strstr (buf, cpu_names [i].name) != NULL)
 158             {
 159               cpu = cpu_names [i].cpu;
 160               break;
 161             }
 162         break;
 163       }
 164
 165   fclose (f);
 166 #endif
 167
 168   if (cpu == NULL)
 169     return NULL;
 170
 171   return concat ("-m", argv[0], "=", cpu, NULL);
 172 }