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-rw-r--r--src/basic/architecture.h247
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diff --git a/src/basic/architecture.h b/src/basic/architecture.h
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+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <endian.h>
+
+#include "macro.h"
+#include "util.h"
+
+/* A cleaned up architecture definition. We don't want to get lost in
+ * processor features, models, generations or even ABIs. Hence we
+ * focus on general family, and distinguish word width and endianness. */
+
+typedef enum {
+ ARCHITECTURE_ALPHA,
+ ARCHITECTURE_ARC,
+ ARCHITECTURE_ARC_BE,
+ ARCHITECTURE_ARM,
+ ARCHITECTURE_ARM64,
+ ARCHITECTURE_ARM64_BE,
+ ARCHITECTURE_ARM_BE,
+ ARCHITECTURE_CRIS,
+ ARCHITECTURE_IA64,
+ ARCHITECTURE_LOONGARCH64,
+ ARCHITECTURE_M68K,
+ ARCHITECTURE_MIPS,
+ ARCHITECTURE_MIPS64,
+ ARCHITECTURE_MIPS64_LE,
+ ARCHITECTURE_MIPS_LE,
+ ARCHITECTURE_NIOS2,
+ ARCHITECTURE_PARISC,
+ ARCHITECTURE_PARISC64,
+ ARCHITECTURE_PPC,
+ ARCHITECTURE_PPC64,
+ ARCHITECTURE_PPC64_LE,
+ ARCHITECTURE_PPC_LE,
+ ARCHITECTURE_RISCV32,
+ ARCHITECTURE_RISCV64,
+ ARCHITECTURE_S390,
+ ARCHITECTURE_S390X,
+ ARCHITECTURE_SH,
+ ARCHITECTURE_SH64,
+ ARCHITECTURE_SPARC,
+ ARCHITECTURE_SPARC64,
+ ARCHITECTURE_TILEGX,
+ ARCHITECTURE_X86,
+ ARCHITECTURE_X86_64,
+ _ARCHITECTURE_MAX,
+ _ARCHITECTURE_INVALID = -EINVAL,
+} Architecture;
+
+Architecture uname_architecture(void);
+
+/*
+ * LIB_ARCH_TUPLE should resolve to the local library path
+ * architecture tuple systemd is built for, according to the Debian
+ * tuple list:
+ *
+ * https://wiki.debian.org/Multiarch/Tuples
+ *
+ * This is used in library search paths that should understand
+ * Debian's paths on all distributions.
+ */
+
+#if defined(__x86_64__)
+# define native_architecture() ARCHITECTURE_X86_64
+# if defined(__ILP32__)
+# define LIB_ARCH_TUPLE "x86_64-linux-gnux32"
+# else
+# define LIB_ARCH_TUPLE "x86_64-linux-gnu"
+# endif
+# define ARCHITECTURE_SECONDARY ARCHITECTURE_X86
+#elif defined(__i386__)
+# define native_architecture() ARCHITECTURE_X86
+# define LIB_ARCH_TUPLE "i386-linux-gnu"
+#elif defined(__powerpc64__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_PPC64
+# define LIB_ARCH_TUPLE "ppc64-linux-gnu"
+# define ARCHITECTURE_SECONDARY ARCHITECTURE_PPC
+# else
+# define native_architecture() ARCHITECTURE_PPC64_LE
+# define LIB_ARCH_TUPLE "powerpc64le-linux-gnu"
+# define ARCHITECTURE_SECONDARY ARCHITECTURE_PPC_LE
+# endif
+#elif defined(__powerpc__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_PPC
+# if defined(__NO_FPRS__)
+# define LIB_ARCH_TUPLE "powerpc-linux-gnuspe"
+# else
+# define LIB_ARCH_TUPLE "powerpc-linux-gnu"
+# endif
+# else
+# define native_architecture() ARCHITECTURE_PPC_LE
+# error "Missing LIB_ARCH_TUPLE for PPCLE"
+# endif
+#elif defined(__ia64__)
+# define native_architecture() ARCHITECTURE_IA64
+# define LIB_ARCH_TUPLE "ia64-linux-gnu"
+#elif defined(__hppa64__)
+# define native_architecture() ARCHITECTURE_PARISC64
+# error "Missing LIB_ARCH_TUPLE for HPPA64"
+#elif defined(__hppa__)
+# define native_architecture() ARCHITECTURE_PARISC
+# define LIB_ARCH_TUPLE "hppa‑linux‑gnu"
+#elif defined(__s390x__)
+# define native_architecture() ARCHITECTURE_S390X
+# define LIB_ARCH_TUPLE "s390x-linux-gnu"
+# define ARCHITECTURE_SECONDARY ARCHITECTURE_S390
+#elif defined(__s390__)
+# define native_architecture() ARCHITECTURE_S390
+# define LIB_ARCH_TUPLE "s390-linux-gnu"
+#elif defined(__sparc__) && defined (__arch64__)
+# define native_architecture() ARCHITECTURE_SPARC64
+# define LIB_ARCH_TUPLE "sparc64-linux-gnu"
+#elif defined(__sparc__)
+# define native_architecture() ARCHITECTURE_SPARC
+# define LIB_ARCH_TUPLE "sparc-linux-gnu"
+#elif defined(__mips64) && defined(__LP64__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_MIPS64
+# define LIB_ARCH_TUPLE "mips64-linux-gnuabi64"
+# else
+# define native_architecture() ARCHITECTURE_MIPS64_LE
+# define LIB_ARCH_TUPLE "mips64el-linux-gnuabi64"
+# endif
+#elif defined(__mips64)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_MIPS64
+# define LIB_ARCH_TUPLE "mips64-linux-gnuabin32"
+# else
+# define native_architecture() ARCHITECTURE_MIPS64_LE
+# define LIB_ARCH_TUPLE "mips64el-linux-gnuabin32"
+# endif
+#elif defined(__mips__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_MIPS
+# define LIB_ARCH_TUPLE "mips-linux-gnu"
+# else
+# define native_architecture() ARCHITECTURE_MIPS_LE
+# define LIB_ARCH_TUPLE "mipsel-linux-gnu"
+# endif
+#elif defined(__alpha__)
+# define native_architecture() ARCHITECTURE_ALPHA
+# define LIB_ARCH_TUPLE "alpha-linux-gnu"
+#elif defined(__aarch64__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_ARM64_BE
+# define LIB_ARCH_TUPLE "aarch64_be-linux-gnu"
+# else
+# define native_architecture() ARCHITECTURE_ARM64
+# define LIB_ARCH_TUPLE "aarch64-linux-gnu"
+# define ARCHITECTURE_SECONDARY ARCHITECTURE_ARM
+# endif
+#elif defined(__arm__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_ARM_BE
+# if defined(__ARM_EABI__)
+# if defined(__ARM_PCS_VFP)
+# define LIB_ARCH_TUPLE "armeb-linux-gnueabihf"
+# else
+# define LIB_ARCH_TUPLE "armeb-linux-gnueabi"
+# endif
+# else
+# define LIB_ARCH_TUPLE "armeb-linux-gnu"
+# endif
+# else
+# define native_architecture() ARCHITECTURE_ARM
+# if defined(__ARM_EABI__)
+# if defined(__ARM_PCS_VFP)
+# define LIB_ARCH_TUPLE "arm-linux-gnueabihf"
+# else
+# define LIB_ARCH_TUPLE "arm-linux-gnueabi"
+# endif
+# else
+# define LIB_ARCH_TUPLE "arm-linux-gnu"
+# endif
+# endif
+#elif defined(__sh64__)
+# define native_architecture() ARCHITECTURE_SH64
+# error "Missing LIB_ARCH_TUPLE for SH64"
+#elif defined(__sh__)
+# define native_architecture() ARCHITECTURE_SH
+# if defined(__SH1__)
+# define LIB_ARCH_TUPLE "sh1-linux-gnu"
+# elif defined(__SH2__)
+# define LIB_ARCH_TUPLE "sh2-linux-gnu"
+# elif defined(__SH2A__)
+# define LIB_ARCH_TUPLE "sh2a-linux-gnu"
+# elif defined(__SH2E__)
+# define LIB_ARCH_TUPLE "sh2e-linux-gnu"
+# elif defined(__SH3__)
+# define LIB_ARCH_TUPLE "sh3-linux-gnu"
+# elif defined(__SH3E__)
+# define LIB_ARCH_TUPLE "sh3e-linux-gnu"
+# elif defined(__SH4__) && !defined(__SH4A__)
+# define LIB_ARCH_TUPLE "sh4-linux-gnu"
+# elif defined(__SH4A__)
+# define LIB_ARCH_TUPLE "sh4a-linux-gnu"
+# endif
+#elif defined(__loongarch64)
+# define native_architecture() ARCHITECTURE_LOONGARCH64
+# if defined(__loongarch_double_float)
+# define LIB_ARCH_TUPLE "loongarch64-linux-gnuf64"
+# elif defined(__loongarch_single_float)
+# define LIB_ARCH_TUPLE "loongarch64-linux-gnuf32"
+# elif defined(__loongarch_soft_float)
+# define LIB_ARCH_TUPLE "loongarch64-linux-gnusf"
+# else
+# error "Unrecognized loongarch architecture variant"
+# endif
+#elif defined(__m68k__)
+# define native_architecture() ARCHITECTURE_M68K
+# define LIB_ARCH_TUPLE "m68k-linux-gnu"
+#elif defined(__tilegx__)
+# define native_architecture() ARCHITECTURE_TILEGX
+# define LIB_ARCH_TUPLE "tilegx-linux-gnu"
+#elif defined(__cris__)
+# define native_architecture() ARCHITECTURE_CRIS
+# error "Missing LIB_ARCH_TUPLE for CRIS"
+#elif defined(__nios2__)
+# define native_architecture() ARCHITECTURE_NIOS2
+# define LIB_ARCH_TUPLE "nios2-linux-gnu"
+#elif defined(__riscv)
+# if __SIZEOF_POINTER__ == 4
+# define native_architecture() ARCHITECTURE_RISCV32
+# define LIB_ARCH_TUPLE "riscv32-linux-gnu"
+# elif __SIZEOF_POINTER__ == 8
+# define native_architecture() ARCHITECTURE_RISCV64
+# define LIB_ARCH_TUPLE "riscv64-linux-gnu"
+# else
+# error "Unrecognized riscv architecture variant"
+# endif
+#elif defined(__arc__)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define native_architecture() ARCHITECTURE_ARC_BE
+# define LIB_ARCH_TUPLE "arceb-linux"
+# else
+# define native_architecture() ARCHITECTURE_ARC
+# define LIB_ARCH_TUPLE "arc-linux"
+# endif
+#else
+# error "Please register your architecture here!"
+#endif
+
+const char *architecture_to_string(Architecture a) _const_;
+Architecture architecture_from_string(const char *s) _pure_;
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