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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libitm/] [config/] [linux/] [sh/] [futex_bits.h] - Rev 775
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/* Copyright (C) 2011 Free Software Foundation, Inc. This file is part of the GNU Transactional Memory Library (libitm). Libitm is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Libitm 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 General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* Provide target-specific access to the futex system call. */ #include <sys/syscall.h> /* 4 instruction cycles not accessing cache and TLB are needed after trapa instruction to avoid an SH-4 silicon bug. */ #define SYSCALL_WITH_INST_PAD "\ trapa #0x14; or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0" static inline long sys_futex0 (std::atomic<int> *addr, long op, long val) { int __status; register long __r3 asm ("r3") = SYS_futex; register long __r4 asm ("r4") = (long) addr; register long __r5 asm ("r5") = op; register long __r6 asm ("r6") = val; register long __r7 asm ("r7") = 0; __asm __volatile (SYSCALL_WITH_INST_PAD : "=z" (__status) : "r" (__r3), "r" (__r4), "r" (__r5), "r" (__r6), "r" (__r7) : "memory", "t"); return __status; }
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