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 "string-util.h"
  25 #include "architecture.h"
  26
  27 int uname_architecture(void) {
  28
  29         /* Return a sanitized enum identifying the architecture we are
  30          * running on. This is based on uname(), and the user may
  31          * hence control what this returns by using
  32          * personality(). This puts the user in control on systems
  33          * that can run binaries of multiple architectures.
  34          *
  35          * We do not translate the string returned by uname()
  36          * 1:1. Instead we try to clean it up and break down the
  37          * confusion on x86 and arm in particular.
  38          *
  39          * We do not try to distinguish CPUs not CPU features, but
  40          * actual architectures, i.e. that have genuinely different
  41          * code. */
  42
  43         static const struct {
  44                 const char *machine;
  45                 int arch;
  46         } arch_map[] = {
  47 #if defined(__x86_64__) || defined(__i386__)
  48                 { "x86_64",     ARCHITECTURE_X86_64   },
  49                 { "i686",       ARCHITECTURE_X86      },
  50                 { "i586",       ARCHITECTURE_X86      },
  51                 { "i486",       ARCHITECTURE_X86      },
  52                 { "i386",       ARCHITECTURE_X86      },
  53 #elif defined(__powerpc__) || defined(__powerpc64__)
  54                 { "ppc64",      ARCHITECTURE_PPC64    },
  55                 { "ppc64le",    ARCHITECTURE_PPC64_LE },
  56                 { "ppc",        ARCHITECTURE_PPC      },
  57                 { "ppcle",      ARCHITECTURE_PPC_LE   },
  58 #elif defined(__ia64__)
  59                 { "ia64",       ARCHITECTURE_IA64     },
  60 #elif defined(__hppa__) || defined(__hppa64__)
  61                 { "parisc64",   ARCHITECTURE_PARISC64 },
  62                 { "parisc",     ARCHITECTURE_PARISC   },
  63 #elif defined(__s390__) || defined(__s390x__)
  64                 { "s390x",      ARCHITECTURE_S390X    },
  65                 { "s390",       ARCHITECTURE_S390     },
  66 #elif defined(__sparc__) || defined(__sparc64__)
  67                 { "sparc64",    ARCHITECTURE_SPARC64  },
  68                 { "sparc",      ARCHITECTURE_SPARC    },
  69 #elif defined(__mips__) || defined(__mips64__)
  70                 { "mips64",     ARCHITECTURE_MIPS64   },
  71                 { "mips",       ARCHITECTURE_MIPS     },
  72 #elif defined(__alpha__)
  73                 { "alpha" ,     ARCHITECTURE_ALPHA    },
  74 #elif defined(__arm__) || defined(__aarch64__)
  75                 { "aarch64",    ARCHITECTURE_ARM64    },
  76                 { "aarch64_be", ARCHITECTURE_ARM64_BE },
  77                 { "armv4l",     ARCHITECTURE_ARM      },
  78                 { "armv4b",     ARCHITECTURE_ARM_BE   },
  79                 { "armv4tl",    ARCHITECTURE_ARM      },
  80                 { "armv4tb",    ARCHITECTURE_ARM_BE   },
  81                 { "armv5tl",    ARCHITECTURE_ARM      },
  82                 { "armv5tb",    ARCHITECTURE_ARM_BE   },
  83                 { "armv5tel",   ARCHITECTURE_ARM      },
  84                 { "armv5teb" ,  ARCHITECTURE_ARM_BE   },
  85                 { "armv5tejl",  ARCHITECTURE_ARM      },
  86                 { "armv5tejb",  ARCHITECTURE_ARM_BE   },
  87                 { "armv6l",     ARCHITECTURE_ARM      },
  88                 { "armv6b",     ARCHITECTURE_ARM_BE   },
  89                 { "armv7l",     ARCHITECTURE_ARM      },
  90                 { "armv7b",     ARCHITECTURE_ARM_BE   },
  91                 { "armv7ml",    ARCHITECTURE_ARM      },
  92                 { "armv7mb",    ARCHITECTURE_ARM_BE   },
  93                 { "armv4l",     ARCHITECTURE_ARM      },
  94                 { "armv4b",     ARCHITECTURE_ARM_BE   },
  95                 { "armv4tl",    ARCHITECTURE_ARM      },
  96                 { "armv4tb",    ARCHITECTURE_ARM_BE   },
  97                 { "armv5tl",    ARCHITECTURE_ARM      },
  98                 { "armv5tb",    ARCHITECTURE_ARM_BE   },
  99                 { "armv5tel",   ARCHITECTURE_ARM      },
 100                 { "armv5teb",   ARCHITECTURE_ARM_BE   },
 101                 { "armv5tejl",  ARCHITECTURE_ARM      },
 102                 { "armv5tejb",  ARCHITECTURE_ARM_BE   },
 103                 { "armv6l",     ARCHITECTURE_ARM      },
 104                 { "armv6b",     ARCHITECTURE_ARM_BE   },
 105                 { "armv7l",     ARCHITECTURE_ARM      },
 106                 { "armv7b",     ARCHITECTURE_ARM_BE   },
 107                 { "armv7ml",    ARCHITECTURE_ARM      },
 108                 { "armv7mb",    ARCHITECTURE_ARM_BE   },
 109                 { "armv8l",     ARCHITECTURE_ARM      },
 110                 { "armv8b",     ARCHITECTURE_ARM_BE   },
 111 #elif defined(__sh__) || defined(__sh64__)
 112                 { "sh5",        ARCHITECTURE_SH64     },
 113                 { "sh2",        ARCHITECTURE_SH       },
 114                 { "sh2a",       ARCHITECTURE_SH       },
 115                 { "sh3",        ARCHITECTURE_SH       },
 116                 { "sh4",        ARCHITECTURE_SH       },
 117                 { "sh4a",       ARCHITECTURE_SH       },
 118 #elif defined(__m68k__)
 119                 { "m68k",       ARCHITECTURE_M68K     },
 120 #elif defined(__tilegx__)
 121                 { "tilegx",     ARCHITECTURE_TILEGX   },
 122 #elif defined(__cris__)
 123                 { "crisv32",    ARCHITECTURE_CRIS     },
 124 #else
 125 #error "Please register your architecture here!"
 126 #endif
 127         };
 128
 129         static int cached = _ARCHITECTURE_INVALID;
 130         struct utsname u;
 131         unsigned i;
 132
 133         if (cached != _ARCHITECTURE_INVALID)
 134                 return cached;
 135
 136         assert_se(uname(&u) >= 0);
 137
 138         for (i = 0; i < ELEMENTSOF(arch_map); i++)
 139                 if (streq(arch_map[i].machine, u.machine))
 140                         return cached = arch_map[i].arch;
 141
 142         assert_not_reached("Couldn't identify architecture. You need to patch systemd.");
 143         return _ARCHITECTURE_INVALID;
 144 }
 145
 146 static const char *const architecture_table[_ARCHITECTURE_MAX] = {
 147         [ARCHITECTURE_X86] = "x86",
 148         [ARCHITECTURE_X86_64] = "x86-64",
 149         [ARCHITECTURE_PPC] = "ppc",
 150         [ARCHITECTURE_PPC_LE] = "ppc-le",
 151         [ARCHITECTURE_PPC64] = "ppc64",
 152         [ARCHITECTURE_PPC64_LE] = "ppc64-le",
 153         [ARCHITECTURE_IA64] = "ia64",
 154         [ARCHITECTURE_PARISC] = "parisc",
 155         [ARCHITECTURE_PARISC64] = "parisc64",
 156         [ARCHITECTURE_S390] = "s390",
 157         [ARCHITECTURE_S390X] = "s390x",
 158         [ARCHITECTURE_SPARC] = "sparc",
 159         [ARCHITECTURE_SPARC64] = "sparc64",
 160         [ARCHITECTURE_MIPS] = "mips",
 161         [ARCHITECTURE_MIPS_LE] = "mips-le",
 162         [ARCHITECTURE_MIPS64] = "mips64",
 163         [ARCHITECTURE_MIPS64_LE] = "mips64-le",
 164         [ARCHITECTURE_ALPHA] = "alpha",
 165         [ARCHITECTURE_ARM] = "arm",
 166         [ARCHITECTURE_ARM_BE] = "arm-be",
 167         [ARCHITECTURE_ARM64] = "arm64",
 168         [ARCHITECTURE_ARM64_BE] = "arm64-be",
 169         [ARCHITECTURE_SH] = "sh",
 170         [ARCHITECTURE_SH64] = "sh64",
 171         [ARCHITECTURE_M68K] = "m68k",
 172         [ARCHITECTURE_TILEGX] = "tilegx",
 173         [ARCHITECTURE_CRIS] = "cris",
 174 };
 175
 176 DEFINE_STRING_TABLE_LOOKUP(architecture, int);