src/basic/architecture.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <sys/utsname.h>
   4
   5 #include "architecture.h"
   6 #include "macro.h"
   7 #include "string-table.h"
   8 #include "string-util.h"
   9
  10 int uname_architecture(void) {
  11
  12         /* Return a sanitized enum identifying the architecture we are
  13          * running on. This is based on uname(), and the user may
  14          * hence control what this returns by using
  15          * personality(). This puts the user in control on systems
  16          * that can run binaries of multiple architectures.
  17          *
  18          * We do not translate the string returned by uname()
  19          * 1:1. Instead we try to clean it up and break down the
  20          * confusion on x86 and arm in particular.
  21          *
  22          * We do not try to distinguish CPUs not CPU features, but
  23          * actual architectures, i.e. that have genuinely different
  24          * code. */
  25
  26         static const struct {
  27                 const char *machine;
  28                 int arch;
  29         } arch_map[] = {
  30 #if defined(__x86_64__) || defined(__i386__)
  31                 { "x86_64",     ARCHITECTURE_X86_64   },
  32                 { "i686",       ARCHITECTURE_X86      },
  33                 { "i586",       ARCHITECTURE_X86      },
  34                 { "i486",       ARCHITECTURE_X86      },
  35                 { "i386",       ARCHITECTURE_X86      },
  36 #elif defined(__powerpc__) || defined(__powerpc64__)
  37                 { "ppc64",      ARCHITECTURE_PPC64    },
  38                 { "ppc64le",    ARCHITECTURE_PPC64_LE },
  39                 { "ppc",        ARCHITECTURE_PPC      },
  40                 { "ppcle",      ARCHITECTURE_PPC_LE   },
  41 #elif defined(__ia64__)
  42                 { "ia64",       ARCHITECTURE_IA64     },
  43 #elif defined(__hppa__) || defined(__hppa64__)
  44                 { "parisc64",   ARCHITECTURE_PARISC64 },
  45                 { "parisc",     ARCHITECTURE_PARISC   },
  46 #elif defined(__s390__) || defined(__s390x__)
  47                 { "s390x",      ARCHITECTURE_S390X    },
  48                 { "s390",       ARCHITECTURE_S390     },
  49 #elif defined(__sparc__)
  50                 { "sparc64",    ARCHITECTURE_SPARC64  },
  51                 { "sparc",      ARCHITECTURE_SPARC    },
  52 #elif defined(__mips__) || defined(__mips64__)
  53                 { "mips64",     ARCHITECTURE_MIPS64   },
  54                 { "mips",       ARCHITECTURE_MIPS     },
  55 #elif defined(__alpha__)
  56                 { "alpha" ,     ARCHITECTURE_ALPHA    },
  57 #elif defined(__arm__) || defined(__aarch64__)
  58                 { "aarch64",    ARCHITECTURE_ARM64    },
  59                 { "aarch64_be", ARCHITECTURE_ARM64_BE },
  60                 { "armv4l",     ARCHITECTURE_ARM      },
  61                 { "armv4b",     ARCHITECTURE_ARM_BE   },
  62                 { "armv4tl",    ARCHITECTURE_ARM      },
  63                 { "armv4tb",    ARCHITECTURE_ARM_BE   },
  64                 { "armv5tl",    ARCHITECTURE_ARM      },
  65                 { "armv5tb",    ARCHITECTURE_ARM_BE   },
  66                 { "armv5tel",   ARCHITECTURE_ARM      },
  67                 { "armv5teb" ,  ARCHITECTURE_ARM_BE   },
  68                 { "armv5tejl",  ARCHITECTURE_ARM      },
  69                 { "armv5tejb",  ARCHITECTURE_ARM_BE   },
  70                 { "armv6l",     ARCHITECTURE_ARM      },
  71                 { "armv6b",     ARCHITECTURE_ARM_BE   },
  72                 { "armv7l",     ARCHITECTURE_ARM      },
  73                 { "armv7b",     ARCHITECTURE_ARM_BE   },
  74                 { "armv7ml",    ARCHITECTURE_ARM      },
  75                 { "armv7mb",    ARCHITECTURE_ARM_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                 { "armv8l",     ARCHITECTURE_ARM      },
  93                 { "armv8b",     ARCHITECTURE_ARM_BE   },
  94 #elif defined(__sh__) || defined(__sh64__)
  95                 { "sh5",        ARCHITECTURE_SH64     },
  96                 { "sh2",        ARCHITECTURE_SH       },
  97                 { "sh2a",       ARCHITECTURE_SH       },
  98                 { "sh3",        ARCHITECTURE_SH       },
  99                 { "sh4",        ARCHITECTURE_SH       },
 100                 { "sh4a",       ARCHITECTURE_SH       },
 101 #elif defined(__m68k__)
 102                 { "m68k",       ARCHITECTURE_M68K     },
 103 #elif defined(__tilegx__)
 104                 { "tilegx",     ARCHITECTURE_TILEGX   },
 105 #elif defined(__cris__)
 106                 { "crisv32",    ARCHITECTURE_CRIS     },
 107 #elif defined(__nios2__)
 108                 { "nios2",      ARCHITECTURE_NIOS2    },
 109 #elif defined(__riscv__) || defined(__riscv)
 110         /* __riscv__ is obsolete, remove in 2018 */
 111                 { "riscv32",    ARCHITECTURE_RISCV32  },
 112                 { "riscv64",    ARCHITECTURE_RISCV64  },
 113 #  if __SIZEOF_POINTER__ == 4
 114                 { "riscv",      ARCHITECTURE_RISCV32  },
 115 #  elif __SIZEOF_POINTER__ == 8
 116                 { "riscv",      ARCHITECTURE_RISCV64  },
 117 #  endif
 118 #elif defined(__arc__)
 119                 { "arc",        ARCHITECTURE_ARC      },
 120                 { "arceb",      ARCHITECTURE_ARC_BE   },
 121 #else
 122 #error "Please register your architecture here!"
 123 #endif
 124         };
 125
 126         static int cached = _ARCHITECTURE_INVALID;
 127         struct utsname u;
 128         unsigned i;
 129
 130         if (cached != _ARCHITECTURE_INVALID)
 131                 return cached;
 132
 133         assert_se(uname(&u) >= 0);
 134
 135         for (i = 0; i < ELEMENTSOF(arch_map); i++)
 136                 if (streq(arch_map[i].machine, u.machine))
 137                         return cached = arch_map[i].arch;
 138
 139         assert_not_reached("Couldn't identify architecture. You need to patch systemd.");
 140         return _ARCHITECTURE_INVALID;
 141 }
 142
 143 static const char *const architecture_table[_ARCHITECTURE_MAX] = {
 144         [ARCHITECTURE_X86] = "x86",
 145         [ARCHITECTURE_X86_64] = "x86-64",
 146         [ARCHITECTURE_PPC] = "ppc",
 147         [ARCHITECTURE_PPC_LE] = "ppc-le",
 148         [ARCHITECTURE_PPC64] = "ppc64",
 149         [ARCHITECTURE_PPC64_LE] = "ppc64-le",
 150         [ARCHITECTURE_IA64] = "ia64",
 151         [ARCHITECTURE_PARISC] = "parisc",
 152         [ARCHITECTURE_PARISC64] = "parisc64",
 153         [ARCHITECTURE_S390] = "s390",
 154         [ARCHITECTURE_S390X] = "s390x",
 155         [ARCHITECTURE_SPARC] = "sparc",
 156         [ARCHITECTURE_SPARC64] = "sparc64",
 157         [ARCHITECTURE_MIPS] = "mips",
 158         [ARCHITECTURE_MIPS_LE] = "mips-le",
 159         [ARCHITECTURE_MIPS64] = "mips64",
 160         [ARCHITECTURE_MIPS64_LE] = "mips64-le",
 161         [ARCHITECTURE_ALPHA] = "alpha",
 162         [ARCHITECTURE_ARM] = "arm",
 163         [ARCHITECTURE_ARM_BE] = "arm-be",
 164         [ARCHITECTURE_ARM64] = "arm64",
 165         [ARCHITECTURE_ARM64_BE] = "arm64-be",
 166         [ARCHITECTURE_SH] = "sh",
 167         [ARCHITECTURE_SH64] = "sh64",
 168         [ARCHITECTURE_M68K] = "m68k",
 169         [ARCHITECTURE_TILEGX] = "tilegx",
 170         [ARCHITECTURE_CRIS] = "cris",
 171         [ARCHITECTURE_NIOS2] = "nios2",
 172         [ARCHITECTURE_RISCV32] = "riscv32",
 173         [ARCHITECTURE_RISCV64] = "riscv64",
 174         [ARCHITECTURE_ARC] = "arc",
 175         [ARCHITECTURE_ARC_BE] = "arc-be",
 176 };
 177
 178 DEFINE_STRING_TABLE_LOOKUP(architecture, int);