include/urcu/arch.h

   1 // SPDX-FileCopyrightText: 2020 Michael Jeanson <mjeanson@efficios.com>
   2 //
   3 // SPDX-License-Identifier: LGPL-2.1-or-later
   4
   5 #ifndef _URCU_ARCH_H
   6 #define _URCU_ARCH_H
   7
   8 /*
   9  * Architecture detection using compiler defines.
  10  *
  11  * The following defines are used internally for architecture specific code.
  12  *
  13  * URCU_ARCH_X86 : All x86 variants 32 and 64 bits
  14  *   URCU_ARCH_I386 : Specific to the i386
  15  *   URCU_ARCH_AMD64 : All 64 bits x86 variants
  16  *   URCU_ARCH_K1OM : Specific to the Xeon Phi / MIC
  17  *
  18  * URCU_ARCH_PPC : All PowerPC variants 32 and 64 bits
  19  *   URCU_ARCH_PPC64 : Specific to 64 bits variants
  20  *
  21  * URCU_ARCH_S390 : All IBM s390 / s390x variants
  22  *
  23  * URCU_ARCH_SPARC64 : All Sun SPARC variants
  24  *
  25  * URCU_ARCH_ALPHA : All DEC Alpha variants
  26  * URCU_ARCH_IA64 : All Intel Itanium variants
  27  * URCU_ARCH_ARM : All ARM 32 bits variants
  28  *   URCU_ARCH_ARMV7 : All ARMv7 ISA variants
  29  * URCU_ARCH_AARCH64 : All ARM 64 bits variants
  30  * URCU_ARCH_MIPS : All MIPS variants
  31  * URCU_ARCH_NIOS2 : All Intel / Altera NIOS II variants
  32  * URCU_ARCH_TILE : All Tilera TILE variants
  33  * URCU_ARCH_HPPA : All HP PA-RISC variants
  34  * URCU_ARCH_M68K : All Motorola 68000 variants
  35  * URCU_ARCH_RISCV : All RISC-V variants
  36  * URCU_ARCH_LOONGARCH : All LoongArch variants
  37  */
  38
  39 #if (defined(__INTEL_OFFLOAD) || defined(__TARGET_ARCH_MIC) || defined(__MIC__))
  40
  41 #define URCU_ARCH_X86 1
  42 #define URCU_ARCH_AMD64 1
  43 #define URCU_ARCH_K1OM 1
  44 #include <urcu/arch/x86.h>
  45
  46 #elif (defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64))
  47
  48 #define URCU_ARCH_X86 1
  49 #define URCU_ARCH_AMD64 1
  50 #include <urcu/arch/x86.h>
  51
  52 #elif (defined(__i386__) || defined(__i386))
  53
  54 #define URCU_ARCH_X86 1
  55
  56 /*
  57  * URCU_ARCH_X86_NO_CAS enables a compat layer that will detect the presence of
  58  * the cmpxchg instructions at runtime and provide a compat mode based on a
  59  * pthread mutex when it isn't.
  60  *
  61  * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 was introduced in GCC 4.3 and Clang 3.3,
  62  * building with older compilers will result in the compat layer always being
  63  * used on x86-32.
  64  */
  65 #ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
  66 #define URCU_ARCH_X86_NO_CAS 1
  67 /* For backwards compat */
  68 #define URCU_ARCH_I386 1
  69 #endif
  70
  71 #include <urcu/arch/x86.h>
  72
  73 #elif (defined(__powerpc64__) || defined(__ppc64__))
  74
  75 #define URCU_ARCH_PPC 1
  76 #define URCU_ARCH_PPC64 1
  77 #include <urcu/arch/ppc.h>
  78
  79 #elif (defined(__powerpc__) || defined(__powerpc) || defined(__ppc__))
  80
  81 #define URCU_ARCH_PPC 1
  82 #include <urcu/arch/ppc.h>
  83
  84 #elif (defined(__s390__) || defined(__s390x__) || defined(__zarch__))
  85
  86 #define URCU_ARCH_S390 1
  87 #include <urcu/arch/s390.h>
  88
  89 #elif (defined(__sparc__) || defined(__sparc) || defined(__sparc64__))
  90
  91 #define URCU_ARCH_SPARC64 1
  92 #include <urcu/arch/sparc64.h>
  93
  94 #elif (defined(__alpha__) || defined(__alpha))
  95
  96 #define URCU_ARCH_ALPHA 1
  97 #include <urcu/arch/alpha.h>
  98
  99 #elif (defined(__ia64__) || defined(__ia64))
 100
 101 #define URCU_ARCH_IA64 1
 102 #include <urcu/arch/ia64.h>
 103
 104 #elif (defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7__))
 105
 106 #define URCU_ARCH_ARMV7 1
 107 #define URCU_ARCH_ARM 1
 108 #include <urcu/arch/arm.h>
 109
 110 #elif (defined(__arm__) || defined(__arm))
 111
 112 #define URCU_ARCH_ARM 1
 113 #include <urcu/arch/arm.h>
 114
 115 #elif defined(__aarch64__)
 116
 117 #define URCU_ARCH_AARCH64 1
 118 #include <urcu/arch/aarch64.h>
 119
 120 #elif (defined(__mips__) || defined(__mips))
 121
 122 #define URCU_ARCH_MIPS 1
 123 #include <urcu/arch/mips.h>
 124
 125 #elif (defined(__nios2__) || defined(__nios2))
 126
 127 #define URCU_ARCH_NIOS2 1
 128 #include <urcu/arch/nios2.h>
 129
 130 #elif defined(__tilegx__)
 131 /*
 132  * URCU has only been tested on the TileGx architecture. For other Tile*
 133  * architectures, please run the tests first and report the results to the
 134  * maintainer so that proper support can be added.
 135  */
 136
 137 #define URCU_ARCH_TILE 1
 138 #include <urcu/arch/tile.h>
 139
 140 #elif (defined(__hppa__) || defined(__HPPA__) || defined(__hppa))
 141
 142 #define URCU_ARCH_HPPA 1
 143 #include <urcu/arch/hppa.h>
 144
 145 #elif defined(__m68k__)
 146
 147 #define URCU_ARCH_M68K 1
 148 #include <urcu/arch/m68k.h>
 149
 150 #elif defined(__riscv)
 151
 152 #define URCU_ARCH_RISCV 1
 153 #include <urcu/arch/riscv.h>
 154
 155 #elif defined(__loongarch__)
 156
 157 #define URCU_ARCH_LOONGARCH 1
 158 #include <urcu/arch/loongarch.h>
 159
 160 #else
 161 #error "Cannot build: unrecognized architecture, see <urcu/arch.h>."
 162 #endif
 163
 164 #ifdef CONFIG_RCU_EMIT_LEGACY_MB
 165 # define cmm_emit_legacy_smp_mb() cmm_smp_mb()
 166 #else
 167 # define cmm_emit_legacy_smp_mb() do { } while (0)
 168 #endif
 169
 170
 171 #endif /* _URCU_ARCH_H */