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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/architecture.c
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/basic/architecture.c178
1 files changed, 178 insertions, 0 deletions
diff --git a/src/basic/architecture.c b/src/basic/architecture.c
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <sys/utsname.h>
+
+#include "architecture.h"
+#include "macro.h"
+#include "string-table.h"
+#include "string-util.h"
+
+Architecture 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 try to distinguish CPUs, not CPU features, i.e. actual architectures that
+ * have genuinely different code. */
+
+ static const struct {
+ const char *machine;
+ Architecture arch;
+ } arch_map[] = {
+#if defined(__aarch64__) || defined(__arm__)
+ { "aarch64", ARCHITECTURE_ARM64 },
+ { "aarch64_be", ARCHITECTURE_ARM64_BE },
+ { "armv8l", ARCHITECTURE_ARM },
+ { "armv8b", ARCHITECTURE_ARM_BE },
+ { "armv7ml", ARCHITECTURE_ARM },
+ { "armv7mb", ARCHITECTURE_ARM_BE },
+ { "armv7l", ARCHITECTURE_ARM },
+ { "armv7b", ARCHITECTURE_ARM_BE },
+ { "armv6l", ARCHITECTURE_ARM },
+ { "armv6b", ARCHITECTURE_ARM_BE },
+ { "armv5tl", ARCHITECTURE_ARM },
+ { "armv5tel", ARCHITECTURE_ARM },
+ { "armv5tejl", ARCHITECTURE_ARM },
+ { "armv5tejb", ARCHITECTURE_ARM_BE },
+ { "armv5teb", ARCHITECTURE_ARM_BE },
+ { "armv5tb", ARCHITECTURE_ARM_BE },
+ { "armv4tl", ARCHITECTURE_ARM },
+ { "armv4tb", ARCHITECTURE_ARM_BE },
+ { "armv4l", ARCHITECTURE_ARM },
+ { "armv4b", ARCHITECTURE_ARM_BE },
+
+#elif defined(__alpha__)
+ { "alpha" , ARCHITECTURE_ALPHA },
+
+#elif defined(__arc__)
+ { "arc", ARCHITECTURE_ARC },
+ { "arceb", ARCHITECTURE_ARC_BE },
+
+#elif defined(__cris__)
+ { "crisv32", ARCHITECTURE_CRIS },
+
+#elif defined(__i386__) || defined(__x86_64__)
+ { "x86_64", ARCHITECTURE_X86_64 },
+ { "i686", ARCHITECTURE_X86 },
+ { "i586", ARCHITECTURE_X86 },
+ { "i486", ARCHITECTURE_X86 },
+ { "i386", ARCHITECTURE_X86 },
+
+#elif defined(__ia64__)
+ { "ia64", ARCHITECTURE_IA64 },
+
+#elif defined(__hppa__) || defined(__hppa64__)
+ { "parisc64", ARCHITECTURE_PARISC64 },
+ { "parisc", ARCHITECTURE_PARISC },
+
+#elif defined(__loongarch64)
+ { "loongarch64", ARCHITECTURE_LOONGARCH64 },
+
+#elif defined(__m68k__)
+ { "m68k", ARCHITECTURE_M68K },
+
+#elif defined(__mips__) || defined(__mips64__)
+ { "mips64", ARCHITECTURE_MIPS64 },
+ { "mips", ARCHITECTURE_MIPS },
+
+#elif defined(__nios2__)
+ { "nios2", ARCHITECTURE_NIOS2 },
+
+#elif defined(__powerpc__) || defined(__powerpc64__)
+ { "ppc64le", ARCHITECTURE_PPC64_LE },
+ { "ppc64", ARCHITECTURE_PPC64 },
+ { "ppcle", ARCHITECTURE_PPC_LE },
+ { "ppc", ARCHITECTURE_PPC },
+
+#elif defined(__riscv)
+ { "riscv64", ARCHITECTURE_RISCV64 },
+ { "riscv32", ARCHITECTURE_RISCV32 },
+# if __SIZEOF_POINTER__ == 4
+ { "riscv", ARCHITECTURE_RISCV32 },
+# elif __SIZEOF_POINTER__ == 8
+ { "riscv", ARCHITECTURE_RISCV64 },
+# endif
+
+#elif defined(__s390__) || defined(__s390x__)
+ { "s390x", ARCHITECTURE_S390X },
+ { "s390", ARCHITECTURE_S390 },
+
+#elif defined(__sh__) || defined(__sh64__)
+ { "sh5", ARCHITECTURE_SH64 },
+ { "sh4a", ARCHITECTURE_SH },
+ { "sh4", ARCHITECTURE_SH },
+ { "sh3", ARCHITECTURE_SH },
+ { "sh2a", ARCHITECTURE_SH },
+ { "sh2", ARCHITECTURE_SH },
+
+#elif defined(__sparc__)
+ { "sparc64", ARCHITECTURE_SPARC64 },
+ { "sparc", ARCHITECTURE_SPARC },
+
+#elif defined(__tilegx__)
+ { "tilegx", ARCHITECTURE_TILEGX },
+
+#else
+# error "Please register your architecture here!"
+#endif
+ };
+
+ static Architecture cached = _ARCHITECTURE_INVALID;
+ struct utsname u;
+
+ if (cached != _ARCHITECTURE_INVALID)
+ return cached;
+
+ assert_se(uname(&u) >= 0);
+
+ for (size_t i = 0; i < ELEMENTSOF(arch_map); i++)
+ if (streq(arch_map[i].machine, u.machine))
+ return cached = arch_map[i].arch;
+
+ assert_not_reached();
+ return _ARCHITECTURE_INVALID;
+}
+
+/* Maintain same order as in the table above. */
+static const char *const architecture_table[_ARCHITECTURE_MAX] = {
+ [ARCHITECTURE_ARM64] = "arm64",
+ [ARCHITECTURE_ARM64_BE] = "arm64-be",
+ [ARCHITECTURE_ARM] = "arm",
+ [ARCHITECTURE_ARM_BE] = "arm-be",
+ [ARCHITECTURE_ALPHA] = "alpha",
+ [ARCHITECTURE_ARC] = "arc",
+ [ARCHITECTURE_ARC_BE] = "arc-be",
+ [ARCHITECTURE_CRIS] = "cris",
+ [ARCHITECTURE_X86_64] = "x86-64",
+ [ARCHITECTURE_X86] = "x86",
+ [ARCHITECTURE_IA64] = "ia64",
+ [ARCHITECTURE_LOONGARCH64] = "loongarch64",
+ [ARCHITECTURE_M68K] = "m68k",
+ [ARCHITECTURE_MIPS64_LE] = "mips64-le",
+ [ARCHITECTURE_MIPS64] = "mips64",
+ [ARCHITECTURE_MIPS_LE] = "mips-le",
+ [ARCHITECTURE_MIPS] = "mips",
+ [ARCHITECTURE_NIOS2] = "nios2",
+ [ARCHITECTURE_PARISC64] = "parisc64",
+ [ARCHITECTURE_PARISC] = "parisc",
+ [ARCHITECTURE_PPC64_LE] = "ppc64-le",
+ [ARCHITECTURE_PPC64] = "ppc64",
+ [ARCHITECTURE_PPC] = "ppc",
+ [ARCHITECTURE_PPC_LE] = "ppc-le",
+ [ARCHITECTURE_RISCV32] = "riscv32",
+ [ARCHITECTURE_RISCV64] = "riscv64",
+ [ARCHITECTURE_S390X] = "s390x",
+ [ARCHITECTURE_S390] = "s390",
+ [ARCHITECTURE_SH64] = "sh64",
+ [ARCHITECTURE_SH] = "sh",
+ [ARCHITECTURE_SPARC64] = "sparc64",
+ [ARCHITECTURE_SPARC] = "sparc",
+ [ARCHITECTURE_TILEGX] = "tilegx",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(architecture, Architecture);