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systemd/src/shared/architecture.c

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/utsname.h>
#include "architecture.h"
int uname_architecture(void) {
/* Return a sanitized enum identifying the architecture we are
* running on. This is based on uname(), and the user may
* hence control what this returns by using
* personality(). This puts the user in control on systems
* that can run binaries of multiple architectures.
*
* We do not translate the string returned by uname()
* 1:1. Instead we try to clean it up and break down the
* confusion on x86 and arm in particular.
*
* We do not try to distuingish CPUs not CPU features, but
* actual architectures, i.e. that have genuinely different
* code. */
static const struct {
const char *machine;
int arch;
} arch_map[] = {
#if defined(__x86_64__) || defined(__i386__)
{ "x86_64", ARCHITECTURE_X86_64 },
{ "i686", ARCHITECTURE_X86 },
{ "i586", ARCHITECTURE_X86 },
{ "i486", ARCHITECTURE_X86 },
{ "i386", ARCHITECTURE_X86 },
#elif defined(__powerpc__) || defined(__powerpc64__)
{ "ppc64", ARCHITECTURE_PPC64 },
{ "ppc64le", ARCHITECTURE_PPC64_LE },
{ "ppc", ARCHITECTURE_PPC },
{ "ppcle", ARCHITECTURE_PPC_LE },
#elif defined(__ia64__)
{ "ia64", ARCHITECTURE_IA64 },
#elif defined(__hppa__) || defined(__hppa64__)
{ "parisc64", ARCHITECTURE_PARISC64 },
{ "parisc", ARCHITECTURE_PARISC },
#elif defined(__s390__) || defined(__s390x__)
{ "s390x", ARCHITECTURE_S390X },
{ "s390", ARCHITECTURE_S390 },
#elif defined(__sparc__) || defined(__sparc64__)
{ "sparc64", ARCHITECTURE_SPARC64 },
{ "sparc", ARCHITECTURE_SPARC },
#elif defined(__mips__) || defined(__mips64__)
{ "mips64", ARCHITECTURE_MIPS64 },
{ "mips", ARCHITECTURE_MIPS },
#elif defined(__alpha__)
{ "alpha" , ARCHITECTURE_ALPHA },
#elif defined(__arm__) || defined(__aarch64__)
{ "aarch64", ARCHITECTURE_ARM64 },
{ "aarch64_be", ARCHITECTURE_ARM64_BE },
{ "armv4l", ARCHITECTURE_ARM },
{ "armv4b", ARCHITECTURE_ARM_BE },
{ "armv4tl", ARCHITECTURE_ARM },
{ "armv4tb", ARCHITECTURE_ARM_BE },
{ "armv5tl", ARCHITECTURE_ARM },
{ "armv5tb", ARCHITECTURE_ARM_BE },
{ "armv5tel", ARCHITECTURE_ARM },
{ "armv5teb" , ARCHITECTURE_ARM_BE },
{ "armv5tejl", ARCHITECTURE_ARM },
{ "armv5tejb", ARCHITECTURE_ARM_BE },
{ "armv6l", ARCHITECTURE_ARM },
{ "armv6b", ARCHITECTURE_ARM_BE },
{ "armv7l", ARCHITECTURE_ARM },
{ "armv7b", ARCHITECTURE_ARM_BE },
{ "armv7ml", ARCHITECTURE_ARM },
{ "armv7mb", ARCHITECTURE_ARM_BE },
{ "armv4l", ARCHITECTURE_ARM },
{ "armv4b", ARCHITECTURE_ARM_BE },
{ "armv4tl", ARCHITECTURE_ARM },
{ "armv4tb", ARCHITECTURE_ARM_BE },
{ "armv5tl", ARCHITECTURE_ARM },
{ "armv5tb", ARCHITECTURE_ARM_BE },
{ "armv5tel", ARCHITECTURE_ARM },
{ "armv5teb", ARCHITECTURE_ARM_BE },
{ "armv5tejl", ARCHITECTURE_ARM },
{ "armv5tejb", ARCHITECTURE_ARM_BE },
{ "armv6l", ARCHITECTURE_ARM },
{ "armv6b", ARCHITECTURE_ARM_BE },
{ "armv7l", ARCHITECTURE_ARM },
{ "armv7b", ARCHITECTURE_ARM_BE },
{ "armv7ml", ARCHITECTURE_ARM },
{ "armv7mb", ARCHITECTURE_ARM_BE },
{ "armv8l", ARCHITECTURE_ARM },
{ "armv8b", ARCHITECTURE_ARM_BE },
#elif defined(__sh__) || defined(__sh64__)
{ "sh5", ARCHITECTURE_SH64 },
{ "sh2", ARCHITECTURE_SH },
{ "sh2a", ARCHITECTURE_SH },
{ "sh3", ARCHITECTURE_SH },
{ "sh4", ARCHITECTURE_SH },
{ "sh4a", ARCHITECTURE_SH },
#elif defined(__m68k__)
{ "m68k", ARCHITECTURE_M68K },
#elif defined(__tilegx__)
{ "tilegx", ARCHITECTURE_TILEGX },
#elif defined(__cris__)
{ "crisv32", ARCHITECTURE_CRIS },
#else
#error "Please register your architecture here!"
#endif
};
static int cached = _ARCHITECTURE_INVALID;
struct utsname u;
unsigned i;
if (cached != _ARCHITECTURE_INVALID)
return cached;
assert_se(uname(&u) >= 0);
for (i = 0; i < ELEMENTSOF(arch_map); i++)
if (streq(arch_map[i].machine, u.machine))
return cached = arch_map[i].arch;
assert_not_reached("Couldn't identify architecture. You need to patch systemd.");
return _ARCHITECTURE_INVALID;
}
static const char *const architecture_table[_ARCHITECTURE_MAX] = {
[ARCHITECTURE_X86] = "x86",
[ARCHITECTURE_X86_64] = "x86-64",
[ARCHITECTURE_PPC] = "ppc",
[ARCHITECTURE_PPC_LE] = "ppc-le",
[ARCHITECTURE_PPC64] = "ppc64",
[ARCHITECTURE_PPC64_LE] = "ppc64-le",
[ARCHITECTURE_IA64] = "ia64",
[ARCHITECTURE_PARISC] = "parisc",
[ARCHITECTURE_PARISC64] = "parisc64",
[ARCHITECTURE_S390] = "s390",
[ARCHITECTURE_S390X] = "s390x",
[ARCHITECTURE_SPARC] = "sparc",
[ARCHITECTURE_SPARC64] = "sparc64",
[ARCHITECTURE_MIPS] = "mips",
[ARCHITECTURE_MIPS_LE] = "mips-le",
[ARCHITECTURE_MIPS64] = "mips64",
[ARCHITECTURE_MIPS64_LE] = "mips64-le",
[ARCHITECTURE_ALPHA] = "alpha",
[ARCHITECTURE_ARM] = "arm",
[ARCHITECTURE_ARM_BE] = "arm-be",
[ARCHITECTURE_ARM64] = "arm64",
[ARCHITECTURE_ARM64_BE] = "arm64-be",
[ARCHITECTURE_SH] = "sh",
[ARCHITECTURE_SH64] = "sh64",
[ARCHITECTURE_M68K] = "m68k",
[ARCHITECTURE_TILEGX] = "tilegx",
[ARCHITECTURE_CRIS] = "cris",
};
DEFINE_STRING_TABLE_LOOKUP(architecture, int);
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