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view src/os_cpu/solaris_x86/vm/atomic_solaris_x86.inline.hpp @ 6402:109af7f9490b
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author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 14 Sep 2012 13:54:17 -0700 |
parents | 4fc084dac61e |
children | 63e54c37ac64 |
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/* * Copyright (c) 1999, 2011, 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_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP #define OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP #include "orderAccess_solaris_x86.inline.hpp" #include "runtime/atomic.hpp" #include "runtime/os.hpp" #include "vm_version_x86.hpp" 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_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_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); } // For Sun Studio - implementation is in solaris_x86_[32/64].il. // For gcc - implementation is just below. // The lock prefix can be omitted for certain instructions on uniprocessors; to // facilitate this, os::is_MP() is passed as an additional argument. 64-bit // processors are assumed to be multi-threaded and/or multi-core, so the extra // argument is unnecessary. #ifndef _LP64 #define IS_MP_DECL() , int is_mp #define IS_MP_ARG() , (int) os::is_MP() #else #define IS_MP_DECL() #define IS_MP_ARG() #endif // _LP64 extern "C" { jint _Atomic_add(jint add_value, volatile jint* dest IS_MP_DECL()); jint _Atomic_xchg(jint exchange_value, volatile jint* dest); jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value IS_MP_DECL()); jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value IS_MP_DECL()); } inline jint Atomic::add (jint add_value, volatile jint* dest) { return _Atomic_add(add_value, dest IS_MP_ARG()); } inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { return _Atomic_xchg(exchange_value, dest); } inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { return _Atomic_cmpxchg(exchange_value, dest, compare_value IS_MP_ARG()); } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { return _Atomic_cmpxchg_long(exchange_value, dest, compare_value IS_MP_ARG()); } #ifdef AMD64 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } extern "C" jlong _Atomic_add_long(jlong add_value, volatile jlong* dest); extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest); inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest); } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void*)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); } inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { return (intptr_t)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); } inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { return (void*)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); } inline jlong Atomic::load(volatile jlong* src) { return *src; } #else // !AMD64 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)add((jint)add_value, (volatile jint*)dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)add((jint)add_value, (volatile jint*)dest); } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void*)xchg((jint)exchange_value, (volatile jint*)dest); } inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); } inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); } extern "C" void _Atomic_move_long(volatile jlong* src, volatile jlong* dst); inline jlong Atomic::load(volatile jlong* src) { volatile jlong dest; _Atomic_move_long(src, &dest); return dest; } inline void Atomic::store(jlong store_value, jlong* dest) { _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); } inline void Atomic::store(jlong store_value, volatile jlong* dest) { _Atomic_move_long((volatile jlong*)&store_value, dest); } #endif // AMD64 #ifdef _GNU_SOURCE // Add a lock prefix to an instruction on an MP machine #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " extern "C" { inline jint _Atomic_add(jint add_value, volatile jint* dest, int mp) { jint addend = add_value; __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)" : "=r" (addend) : "0" (addend), "r" (dest), "r" (mp) : "cc", "memory"); return addend + add_value; } #ifdef AMD64 inline jlong _Atomic_add_long(jlong add_value, volatile jlong* dest, int mp) { intptr_t addend = add_value; __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)" : "=r" (addend) : "0" (addend), "r" (dest), "r" (mp) : "cc", "memory"); return addend + add_value; } inline jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest) { __asm__ __volatile__ ("xchgq (%2),%0" : "=r" (exchange_value) : "0" (exchange_value), "r" (dest) : "memory"); return exchange_value; } #endif // AMD64 inline jint _Atomic_xchg(jint exchange_value, volatile jint* dest) { __asm__ __volatile__ ("xchgl (%2),%0" : "=r" (exchange_value) : "0" (exchange_value), "r" (dest) : "memory"); return exchange_value; } inline jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value, int mp) { __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)" : "=a" (exchange_value) : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value; } // This is the interface to the atomic instruction in solaris_i486.s. jlong _Atomic_cmpxchg_long_gcc(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp); inline jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp) { #ifdef AMD64 __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)" : "=a" (exchange_value) : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value; #else return _Atomic_cmpxchg_long_gcc(exchange_value, dest, compare_value, os::is_MP()); #if 0 // The code below does not work presumably because of the bug in gcc // The error message says: // can't find a register in class BREG while reloading asm // However I want to save this code and later replace _Atomic_cmpxchg_long_gcc // with such inline asm code: volatile jlong_accessor evl, cvl, rv; evl.long_value = exchange_value; cvl.long_value = compare_value; int mp = os::is_MP(); __asm__ volatile ("cmp $0, %%esi\n\t" "je 1f \n\t" "lock\n\t" "1: cmpxchg8b (%%edi)\n\t" : "=a"(cvl.words[0]), "=d"(cvl.words[1]) : "a"(cvl.words[0]), "d"(cvl.words[1]), "b"(evl.words[0]), "c"(evl.words[1]), "D"(dest), "S"(mp) : "cc", "memory"); return cvl.long_value; #endif // if 0 #endif // AMD64 } } #undef LOCK_IF_MP #endif // _GNU_SOURCE #endif // OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP