| /* |
| * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP |
| #define OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP |
| |
| // Implementation of class atomic |
| |
| inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } |
| inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } |
| inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } |
| inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } |
| inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } |
| inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } |
| |
| inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } |
| inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } |
| inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } |
| inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } |
| inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } |
| inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } |
| |
| inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } |
| inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } |
| inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } |
| |
| inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } |
| inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } |
| inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } |
| |
| inline jlong Atomic::load(const volatile jlong* src) { return *src; } |
| |
| template<size_t byte_size> |
| struct Atomic::PlatformAdd |
| : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> > |
| { |
| template<typename I, typename D> |
| D add_and_fetch(I add_value, D volatile* dest) const; |
| }; |
| |
| template<> |
| template<typename I, typename D> |
| inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const { |
| STATIC_ASSERT(4 == sizeof(I)); |
| STATIC_ASSERT(4 == sizeof(D)); |
| |
| D rv; |
| __asm__ volatile( |
| "1: \n\t" |
| " ld [%2], %%o2\n\t" |
| " add %1, %%o2, %%o3\n\t" |
| " cas [%2], %%o2, %%o3\n\t" |
| " cmp %%o2, %%o3\n\t" |
| " bne 1b\n\t" |
| " nop\n\t" |
| " add %1, %%o2, %0\n\t" |
| : "=r" (rv) |
| : "r" (add_value), "r" (dest) |
| : "memory", "o2", "o3"); |
| return rv; |
| } |
| |
| template<> |
| template<typename I, typename D> |
| inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const { |
| STATIC_ASSERT(8 == sizeof(I)); |
| STATIC_ASSERT(8 == sizeof(D)); |
| |
| D rv; |
| __asm__ volatile( |
| "1: \n\t" |
| " ldx [%2], %%o2\n\t" |
| " add %1, %%o2, %%o3\n\t" |
| " casx [%2], %%o2, %%o3\n\t" |
| " cmp %%o2, %%o3\n\t" |
| " bne %%xcc, 1b\n\t" |
| " nop\n\t" |
| " add %1, %%o2, %0\n\t" |
| : "=r" (rv) |
| : "r" (add_value), "r" (dest) |
| : "memory", "o2", "o3"); |
| return rv; |
| } |
| |
| |
| inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { |
| intptr_t rv = exchange_value; |
| __asm__ volatile( |
| " swap [%2],%1\n\t" |
| : "=r" (rv) |
| : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) |
| : "memory"); |
| return rv; |
| } |
| |
| inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { |
| intptr_t rv = exchange_value; |
| __asm__ volatile( |
| "1:\n\t" |
| " mov %1, %%o3\n\t" |
| " ldx [%2], %%o2\n\t" |
| " casx [%2], %%o2, %%o3\n\t" |
| " cmp %%o2, %%o3\n\t" |
| " bne %%xcc, 1b\n\t" |
| " nop\n\t" |
| " mov %%o2, %0\n\t" |
| : "=r" (rv) |
| : "r" (exchange_value), "r" (dest) |
| : "memory", "o2", "o3"); |
| return rv; |
| } |
| |
| inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { |
| return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); |
| } |
| |
| // No direct support for cmpxchg of bytes; emulate using int. |
| template<> |
| struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {}; |
| |
| template<> |
| template<typename T> |
| inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value, |
| T volatile* dest, |
| T compare_value, |
| cmpxchg_memory_order order) const { |
| STATIC_ASSERT(4 == sizeof(T)); |
| T rv; |
| __asm__ volatile( |
| " cas [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| return rv; |
| } |
| |
| template<> |
| template<typename T> |
| inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value, |
| T volatile* dest, |
| T compare_value, |
| cmpxchg_memory_order order) const { |
| STATIC_ASSERT(8 == sizeof(T)); |
| T rv; |
| __asm__ volatile( |
| " casx [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| return rv; |
| } |
| |
| #endif // OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP |