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  */
  37
  38 #if (defined(__INTEL_OFFLOAD) || defined(__TARGET_ARCH_MIC) || defined(__MIC__))
  39
  40 #define URCU_ARCH_X86 1
  41 #define URCU_ARCH_AMD64 1
  42 #define URCU_ARCH_K1OM 1
  43 #include <urcu/arch/x86.h>
  44
  45 #elif (defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64))
  46
  47 #define URCU_ARCH_X86 1
  48 #define URCU_ARCH_AMD64 1
  49 #include <urcu/arch/x86.h>
  50
  51 #elif (defined(__i386__) || defined(__i386))
  52
  53 #define URCU_ARCH_X86 1
  54
  55 /*
  56  * URCU_ARCH_X86_NO_CAS enables a compat layer that will detect the presence of
  57  * the cmpxchg instructions at runtime and provide a compat mode based on a
  58  * pthread mutex when it isn't.
  59  *
  60  * __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 was introduced in GCC 4.3 and Clang 3.3,
  61  * building with older compilers will result in the compat layer always being
  62  * used on x86-32.
  63  */
  64 #ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
  65 #define URCU_ARCH_X86_NO_CAS 1
  66 /* For backwards compat */
  67 #define URCU_ARCH_I386 1
  68 #endif
  69
  70 #include <urcu/arch/x86.h>
  71
  72 #elif (defined(__powerpc64__) || defined(__ppc64__))
  73
  74 #define URCU_ARCH_PPC 1
  75 #define URCU_ARCH_PPC64 1
  76 #include <urcu/arch/ppc.h>
  77
  78 #elif (defined(__powerpc__) || defined(__powerpc) || defined(__ppc__))
  79
  80 #define URCU_ARCH_PPC 1
  81 #include <urcu/arch/ppc.h>
  82
  83 #elif (defined(__s390__) || defined(__s390x__) || defined(__zarch__))
  84
  85 #define URCU_ARCH_S390 1
  86 #include <urcu/arch/s390.h>
  87
  88 #elif (defined(__sparc__) || defined(__sparc) || defined(__sparc64__))
  89
  90 #define URCU_ARCH_SPARC64 1
  91 #include <urcu/arch/sparc64.h>
  92
  93 #elif (defined(__alpha__) || defined(__alpha))
  94
  95 #define URCU_ARCH_ALPHA 1
  96 #include <urcu/arch/alpha.h>
  97
  98 #elif (defined(__ia64__) || defined(__ia64))
  99
 100 #define URCU_ARCH_IA64 1
 101 #include <urcu/arch/ia64.h>
 102
 103 #elif (defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7__))
 104
 105 #define URCU_ARCH_ARMV7 1
 106 #define URCU_ARCH_ARM 1
 107 #include <urcu/arch/arm.h>
 108
 109 #elif (defined(__arm__) || defined(__arm))
 110
 111 #define URCU_ARCH_ARM 1
 112 #include <urcu/arch/arm.h>
 113
 114 #elif defined(__aarch64__)
 115
 116 #define URCU_ARCH_AARCH64 1
 117 #include <urcu/arch/aarch64.h>
 118
 119 #elif (defined(__mips__) || defined(__mips))
 120
 121 #define URCU_ARCH_MIPS 1
 122 #include <urcu/arch/mips.h>
 123
 124 #elif (defined(__nios2__) || defined(__nios2))
 125
 126 #define URCU_ARCH_NIOS2 1
 127 #include <urcu/arch/nios2.h>
 128
 129 #elif defined(__tilegx__)
 130 /*
 131  * URCU has only been tested on the TileGx architecture. For other Tile*
 132  * architectures, please run the tests first and report the results to the
 133  * maintainer so that proper support can be added.
 134  */
 135
 136 #define URCU_ARCH_TILE 1
 137 #include <urcu/arch/tile.h>
 138
 139 #elif (defined(__hppa__) || defined(__HPPA__) || defined(__hppa))
 140
 141 #define URCU_ARCH_HPPA 1
 142 #include <urcu/arch/hppa.h>
 143
 144 #elif defined(__m68k__)
 145
 146 #define URCU_ARCH_M68K 1
 147 #include <urcu/arch/m68k.h>
 148
 149 #elif defined(__riscv)
 150
 151 #define URCU_ARCH_RISCV 1
 152 #include <urcu/arch/riscv.h>
 153
 154 #else
 155 #error "Cannot build: unrecognized architecture, see <urcu/arch.h>."
 156 #endif
 157
 158 #ifdef CONFIG_RCU_EMIT_LEGACY_MB
 159 # define cmm_emit_legacy_smp_mb() cmm_smp_mb()
 160 #else
 161 # define cmm_emit_legacy_smp_mb() do { } while (0)
 162 #endif
 163
 164
 165 #endif /* _URCU_ARCH_H */