1 /* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef OS_CPU_LINUX_ARM_VM_PREFETCH_LINUX_ARM_INLINE_HPP 26 #define OS_CPU_LINUX_ARM_VM_PREFETCH_LINUX_ARM_INLINE_HPP 27 28 #include "runtime/prefetch.hpp" 29 30 inline void Prefetch::read (void *loc, intx interval) { 31 #ifdef AARCH64 32 __asm__ volatile ("prfm PLDL1KEEP, [%0]" : : "r" (loc)); 33 #else 34 #if defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_5TE__) 35 __asm__ volatile ("pld [%0]" : : "r" (loc)); 36 #endif 37 #endif // AARCH64 38 } 39 40 inline void Prefetch::write(void *loc, intx interval) { 41 #ifdef AARCH64 42 __asm__ volatile ("prfm PSTL1KEEP, [%0]" : : "r" (loc)); 43 #else 44 // Not available on 32-bit ARM (prior to ARMv7 with MP extensions) 45 #endif // AARCH64 46 } 47 48 #endif // OS_CPU_LINUX_ARM_VM_PREFETCH_LINUX_ARM_INLINE_HPP