projects / urcu.git / blame
| Commit | Line | Data |
|---|---|---|
| 6aca0125 JW |
1 | #ifndef _URCU_ARCH_ARM_H |
| 2 | #define _URCU_ARCH_ARM_H | |
| fdbddd0b PM |
3 | |
| 4 | /* | |
| 6aca0125 | 5 | * arch_arm.h: trivial definitions for the ARM architecture. |
| fdbddd0b PM |
6 | * |
| 7 | * Copyright (c) 2010 Paul E. McKenney, IBM Corporation. | |
| 6982d6d7 | 8 | * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| fdbddd0b PM |
9 | * |
| 10 | * This library is free software; you can redistribute it and/or | |
| 11 | * modify it under the terms of the GNU Lesser General Public | |
| 12 | * License as published by the Free Software Foundation; either | |
| 13 | * version 2.1 of the License, or (at your option) any later version. | |
| 14 | * | |
| 15 | * This library is distributed in the hope that it will be useful, | |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 | * Lesser General Public License for more details. | |
| 19 | * | |
| 20 | * You should have received a copy of the GNU Lesser General Public | |
| 21 | * License along with this library; if not, write to the Free Software | |
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 23 | */ | |
| 24 | ||
| 25 | #include <urcu/compiler.h> | |
| 26 | #include <urcu/config.h> | |
| 999991c6 | 27 | #include <urcu/syscall-compat.h> |
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28 | |
| 29 | #ifdef __cplusplus | |
| 30 | extern "C" { | |
| 67ecffc0 | 31 | #endif |
| fdbddd0b | 32 | |
| 9260f372 MJ |
33 | /* |
| 34 | * Using DMB is faster than the builtin __sync_synchronize and this instruction is | |
| 35 | * part of the baseline ARMv7 ISA. | |
| 36 | */ | |
| 37 | #ifdef URCU_ARCH_ARMV7 | |
| 38 | ||
| 39 | /* For backwards compat. */ | |
| 40 | #define CONFIG_RCU_ARM_HAVE_DMB 1 | |
| 41 | ||
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42 | /* |
| 43 | * Issues full system DMB operation. | |
| 44 | */ | |
| 45 | #define cmm_mb() __asm__ __volatile__ ("dmb sy":::"memory") | |
| 46 | #define cmm_rmb() __asm__ __volatile__ ("dmb sy":::"memory") | |
| 47 | #define cmm_wmb() __asm__ __volatile__ ("dmb sy":::"memory") | |
| 48 | ||
| 49 | /* | |
| 50 | * Issues DMB operation only to the inner shareable domain. | |
| 51 | */ | |
| 52 | #define cmm_smp_mb() __asm__ __volatile__ ("dmb ish":::"memory") | |
| 53 | #define cmm_smp_rmb() __asm__ __volatile__ ("dmb ish":::"memory") | |
| 54 | #define cmm_smp_wmb() __asm__ __volatile__ ("dmb ish":::"memory") | |
| 9260f372 MJ |
55 | |
| 56 | #endif /* URCU_ARCH_ARMV7 */ | |
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57 | |
| 58 | #include <stdlib.h> | |
| 59 | #include <sys/time.h> | |
| 60 | ||
| da5b715a | 61 | /* |
| 84f4ccb4 MD |
62 | * On Linux, define the membarrier system call number if not yet available in |
| 63 | * the system headers. | |
| da5b715a | 64 | */ |
| 84f4ccb4 | 65 | #if (defined(__linux__) && !defined(__NR_membarrier)) |
| da5b715a MD |
66 | #define __NR_membarrier 389 |
| 67 | #endif | |
| 68 | ||
| 3f0dd283 MJ |
69 | /* |
| 70 | * Error out for compilers with known bugs. | |
| 71 | */ | |
| 72 | ||
| 73 | /* | |
| 74 | * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 | |
| 75 | */ | |
| 76 | #ifdef URCU_GCC_VERSION | |
| 77 | # if URCU_GCC_VERSION >= 40800 && URCU_GCC_VERSION <= 40802 | |
| 78 | # error Your gcc version produces clobbered frame accesses | |
| 79 | # endif | |
| 80 | #endif | |
| 81 | ||
| 39c2747c MJ |
82 | /* |
| 83 | * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42263 | |
| 84 | */ | |
| 85 | #ifdef URCU_GCC_VERSION | |
| 86 | # if URCU_GCC_VERSION >= 40400 && URCU_GCC_VERSION <= 40402 | |
| 87 | # error Your gcc version has a non-functional __sync_synchronize() | |
| 88 | # endif | |
| 89 | #endif | |
| 90 | ||
| 67ecffc0 | 91 | #ifdef __cplusplus |
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92 | } |
| 93 | #endif | |
| 94 | ||
| 1b9119f8 | 95 | #include <urcu/arch/generic.h> |
| fdbddd0b | 96 | |
| 6aca0125 | 97 | #endif /* _URCU_ARCH_ARM_H */ |