src/shared/architecture.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2014 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <sys/utsname.h>
  23
  24 #include "architecture.h"
  25
  26 Architecture uname_architecture(void) {
  27
  28         /* Return a sanitized enum identifying the architecture we are
  29          * running on. This is based on uname(), and the user may
  30          * hence control what this returns by using
  31          * personality(). This puts the user in control on systems
  32          * that can run binaries of multiple architectures.
  33          *
  34          * We do not translate the string returned by uname()
  35          * 1:1. Instead we try to clean it up and break down the
  36          * confusion on x86 and arm in particular.
  37          *
  38          * We do not try to distuingish CPUs not CPU features, but
  39          * actual architectures, i.e. that have genuinely different
  40          * code. */
  41
  42         static const struct {
  43                 const char *machine;
  44                 Architecture arch;
  45         } arch_map[] = {
  46 #if defined(__x86_64__) || defined(__i386__)
  47                 { "x86_64",     ARCHITECTURE_X86_64   },
  48                 { "i686",       ARCHITECTURE_X86      },
  49                 { "i586",       ARCHITECTURE_X86      },
  50                 { "i486",       ARCHITECTURE_X86      },
  51                 { "i386",       ARCHITECTURE_X86      },
  52 #elif defined(__powerpc__) || defined(__powerpc64__)
  53                 { "ppc64",      ARCHITECTURE_PPC64    },
  54                 { "ppc64le",    ARCHITECTURE_PPC64_LE },
  55                 { "ppc",        ARCHITECTURE_PPC      },
  56                 { "ppcle",      ARCHITECTURE_PPC_LE   },
  57 #elif defined(__ia64__)
  58                 { "ia64",       ARCHITECTURE_IA64     },
  59 #elif defined(__hppa__) || defined(__hppa64__)
  60                 { "parisc64",   ARCHITECTURE_PARISC64 },
  61                 { "parisc",     ARCHITECTURE_PARISC   },
  62 #elif defined(__s390__) || defined(__s390x__)
  63                 { "s390x",      ARCHITECTURE_S390X    },
  64                 { "s390",       ARCHITECTURE_S390     },
  65 #elif defined(__sparc__) || defined(__sparc64__)
  66                 { "sparc64",    ARCHITECTURE_SPARC64  },
  67                 { "sparc",      ARCHITECTURE_SPARC    },
  68 #elif defined(__mips__) || defined(__mips64__)
  69                 { "mips64",     ARCHITECTURE_MIPS64   },
  70                 { "mips",       ARCHITECTURE_MIPS     },
  71 #elif defined(__alpha__)
  72                 { "alpha" ,     ARCHITECTURE_ALPHA    },
  73 #elif defined(__arm__) || defined(__aarch64__)
  74                 { "aarch64",    ARCHITECTURE_ARM64    },
  75                 { "aarch64_be", ARCHITECTURE_ARM64_BE },
  76                 { "armv4l",     ARCHITECTURE_ARM      },
  77                 { "armv4b",     ARCHITECTURE_ARM_BE   },
  78                 { "armv4tl",    ARCHITECTURE_ARM      },
  79                 { "armv4tb",    ARCHITECTURE_ARM_BE   },
  80                 { "armv5tl",    ARCHITECTURE_ARM      },
  81                 { "armv5tb",    ARCHITECTURE_ARM_BE   },
  82                 { "armv5tel",   ARCHITECTURE_ARM      },
  83                 { "armv5teb" ,  ARCHITECTURE_ARM_BE   },
  84                 { "armv5tejl",  ARCHITECTURE_ARM      },
  85                 { "armv5tejb",  ARCHITECTURE_ARM_BE   },
  86                 { "armv6l",     ARCHITECTURE_ARM      },
  87                 { "armv6b",     ARCHITECTURE_ARM_BE   },
  88                 { "armv7l",     ARCHITECTURE_ARM      },
  89                 { "armv7b",     ARCHITECTURE_ARM_BE   },
  90                 { "armv7ml",    ARCHITECTURE_ARM      },
  91                 { "armv7mb",    ARCHITECTURE_ARM_BE   },
  92                 { "armv4l",     ARCHITECTURE_ARM      },
  93                 { "armv4b",     ARCHITECTURE_ARM_BE   },
  94                 { "armv4tl",    ARCHITECTURE_ARM      },
  95                 { "armv4tb",    ARCHITECTURE_ARM_BE   },
  96                 { "armv5tl",    ARCHITECTURE_ARM      },
  97                 { "armv5tb",    ARCHITECTURE_ARM_BE   },
  98                 { "armv5tel",   ARCHITECTURE_ARM      },
  99                 { "armv5teb",   ARCHITECTURE_ARM_BE   },
 100                 { "armv5tejl",  ARCHITECTURE_ARM      },
 101                 { "armv5tejb",  ARCHITECTURE_ARM_BE   },
 102                 { "armv6l",     ARCHITECTURE_ARM      },
 103                 { "armv6b",     ARCHITECTURE_ARM_BE   },
 104                 { "armv7l",     ARCHITECTURE_ARM      },
 105                 { "armv7b",     ARCHITECTURE_ARM_BE   },
 106                 { "armv7ml",    ARCHITECTURE_ARM      },
 107                 { "armv7mb",    ARCHITECTURE_ARM_BE   },
 108                 { "armv8l",     ARCHITECTURE_ARM      },
 109                 { "armv8b",     ARCHITECTURE_ARM_BE   },
 110 #elif defined(__sh__) || defined(__sh64__)
 111                 { "sh64",       ARCHITECTURE_SH64     },
 112                 { "sh",         ARCHITECTURE_SH       },
 113 #elif defined(__m68k__)
 114                 { "m68k",       ARCHITECTURE_M68K     },
 115 #elif defined(__tilegx__)
 116                 { "tilegx",     ARCHITECTURE_TILEGX   },
 117 #elif defined(__cris__)
 118                 { "cris",       ARCHITECTURE_CRIS     },
 119                 { "crisv32",    ARCHITECTURE_CRIS     },
 120 #else
 121 #error "Please register your architecture here!"
 122 #endif
 123         };
 124
 125         static Architecture cached = _ARCHITECTURE_INVALID;
 126         struct utsname u;
 127         unsigned i;
 128
 129         if (cached != _ARCHITECTURE_INVALID)
 130                 return cached;
 131
 132         assert_se(uname(&u) >= 0);
 133
 134         for (i = 0; i < ELEMENTSOF(arch_map); i++)
 135                 if (streq(arch_map[i].machine, u.machine))
 136                         return cached = arch_map[i].arch;
 137
 138         assert_not_reached("Couldn't identify architecture. You need to patch systemd.");
 139         return _ARCHITECTURE_INVALID;
 140 }
 141
 142 static const char *const architecture_table[_ARCHITECTURE_MAX] = {
 143         [ARCHITECTURE_X86] = "x86",
 144         [ARCHITECTURE_X86_64] = "x86-64",
 145         [ARCHITECTURE_PPC] = "ppc",
 146         [ARCHITECTURE_PPC_LE] = "ppc-le",
 147         [ARCHITECTURE_PPC64] = "ppc64",
 148         [ARCHITECTURE_PPC64_LE] = "ppc64-le",
 149         [ARCHITECTURE_IA64] = "ia64",
 150         [ARCHITECTURE_PARISC] = "parisc",
 151         [ARCHITECTURE_PARISC64] = "parisc64",
 152         [ARCHITECTURE_S390] = "s390",
 153         [ARCHITECTURE_S390X] = "s390x",
 154         [ARCHITECTURE_SPARC] = "sparc",
 155         [ARCHITECTURE_SPARC64] = "sparc64",
 156         [ARCHITECTURE_MIPS] = "mips",
 157         [ARCHITECTURE_MIPS64] = "mips64",
 158         [ARCHITECTURE_ALPHA] = "alpha",
 159         [ARCHITECTURE_ARM] = "arm",
 160         [ARCHITECTURE_ARM_BE] = "arm-be",
 161         [ARCHITECTURE_ARM64] = "arm64",
 162         [ARCHITECTURE_ARM64_BE] = "arm64-be",
 163         [ARCHITECTURE_SH] = "sh",
 164         [ARCHITECTURE_SH64] = "sh64",
 165         [ARCHITECTURE_M68K] = "m68k",
 166         [ARCHITECTURE_TILEGX] = "tilegx",
 167         [ARCHITECTURE_CRIS] = "cris",
 168 };
 169
 170 DEFINE_STRING_TABLE_LOOKUP(architecture, Architecture);