--- /dev/null
+/*
+ * urcu/arch.h
+ *
+ * Copyright (c) 2020 Michael Jeanson <michael.jeanson@efficios.com>
+ *
+ * This library 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.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _URCU_ARCH_H
+#define _URCU_ARCH_H
+
+/*
+ * Architecture detection using compiler defines.
+ *
+ * The following defines are used internally for architecture specific code.
+ *
+ * URCU_ARCH_X86 : All x86 variants 32 and 64 bits
+ * URCU_ARCH_I386 : Specific to the i386
+ * URCU_ARCH_AMD64 : All 64 bits x86 variants
+ * URCU_ARCH_K1OM : Specific to the Xeon Phi / MIC
+ *
+ * URCU_ARCH_PPC : All PowerPC variants 32 and 64 bits
+ * URCU_ARCH_PPC64 : Specific to 64 bits variants
+ *
+ * URCU_ARCH_S390 : All IBM s390 / s390x variants
+ *
+ * URCU_ARCH_SPARC64 : All Sun SPARC variants
+ *
+ * URCU_ARCH_ALPHA : All DEC Alpha variants
+ * URCU_ARCH_IA64 : All Intel Itanium variants
+ * URCU_ARCH_ARM : All ARM 32 bits variants
+ * URCU_ARCH_AARCH64 : All ARM 64 bits variants
+ * URCU_ARCH_MIPS : All MIPS variants
+ * URCU_ARCH_NIOS2 : All Intel / Altera NIOS II variants
+ * URCU_ARCH_TILE : All Tilera TILE variants
+ * URCU_ARCH_HPPA : All HP PA-RISC variants
+ * URCU_ARCH_M68K : All Motorola 68000 variants
+ * URCU_ARCH_RISCV : All RISC-V variants
+ */
+#if (defined(__i386__) || defined(__i386))
+
+#define URCU_ARCH_X86 1
+#define URCU_ARCH_I386 1
+#include <urcu/arch/x86.h>
+
+#elif (defined(__i486__) || defined(__i586__) || defined(__i686__))
+
+#define URCU_ARCH_X86 1
+#include <urcu/arch/x86.h>
+
+#elif (defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64))
+
+#define URCU_ARCH_X86 1
+#define URCU_ARCH_AMD64 1
+#include <urcu/arch/x86.h>
+
+#elif (defined(__INTEL_OFFLOAD) || defined(__TARGET_ARCH_MIC) || defined(__MIC__))
+
+#define URCU_ARCH_X86 1
+#define URCU_ARCH_AMD64 1
+#define URCU_ARCH_K1OM 1
+#include <urcu/arch/x86.h>
+
+#elif (defined(__powerpc__) || defined(__powerpc) || defined(__ppc__))
+
+#define URCU_ARCH_PPC 1
+#include <urcu/arch/ppc.h>
+
+#elif (defined(__powerpc64__) || defined(__ppc64__))
+
+#define URCU_ARCH_PPC 1
+#define URCU_ARCH_PPC64 1
+#include <urcu/arch/ppc.h>
+
+#elif (defined(__s390__) || defined(__s390x__) || defined(__zarch__))
+
+#define URCU_ARCH_S390 1
+#include <urcu/arch/s390.h>
+
+#elif (defined(__sparc__) || defined(__sparc) || defined(__sparc64__))
+
+#define URCU_ARCH_SPARC64 1
+#include <urcu/arch/sparc64.h>
+
+#elif (defined(__alpha__) || defined(__alpha))
+
+#define URCU_ARCH_ALPHA 1
+#include <urcu/arch/alpha.h>
+
+#elif (defined(__ia64__) || defined(__ia64))
+
+#define URCU_ARCH_IA64 1
+#include <urcu/arch/ia64.h>
+
+#elif (defined(__arm__) || defined(__arm))
+
+#define URCU_ARCH_ARM 1
+#include <urcu/arch/arm.h>
+
+#elif defined(__aarch64__)
+
+#define URCU_ARCH_AARCH64 1
+#include <urcu/arch/aarch64.h>
+
+#elif (defined(__mips__) || defined(__mips))
+
+#define URCU_ARCH_MIPS 1
+#include <urcu/arch/mips.h>
+
+#elif (defined(__nios2__) || defined(__nios2))
+
+#define URCU_ARCH_NIOS2 1
+#include <urcu/arch/nios2.h>
+
+#elif defined(__tilegx__)
+/*
+ * URCU has only been tested on the TileGx architecture. For other Tile*
+ * architectures, please run the tests first and report the results to the
+ * maintainer so that proper support can be added.
+ */
+
+#define URCU_ARCH_TILE 1
+#include <urcu/arch/tile.h>
+
+#elif (defined(__hppa__) || defined(__HPPA__) || defined(__hppa))
+
+#define URCU_ARCH_HPPA 1
+#include <urcu/arch/hppa.h>
+
+#elif defined(__m68k__)
+
+#define URCU_ARCH_M68K 1
+#include <urcu/arch/m68k.h>
+
+#elif defined(__riscv)
+
+#define URCU_ARCH_RISCV 1
+#include <urcu/arch/riscv.h>
+
+#else
+#error "Cannot build: unrecognized architecture, see <urcu/arch.h>."
+#endif
+
+
+#endif /* _URCU_ARCH_H */
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