| /* |
| * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| // 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); } |
| |
| #ifdef _GNU_SOURCE |
| |
| inline jint Atomic::add (jint add_value, volatile jint* dest) { |
| intptr_t 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; |
| } |
| |
| inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { |
| intptr_t rv; |
| #ifdef _LP64 |
| __asm__ volatile( |
| "1: \n\t" |
| " ldx [%2], %%o2\n\t" |
| " add %0, %%o2, %%o3\n\t" |
| " casx [%2], %%o2, %%o3\n\t" |
| " cmp %%o2, %%o3\n\t" |
| " bne %%xcc, 1b\n\t" |
| " nop\n\t" |
| " add %0, %%o2, %0\n\t" |
| : "=r" (rv) |
| : "r" (add_value), "r" (dest) |
| : "memory", "o2", "o3"); |
| #else //_LP64 |
| __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"); |
| #endif // _LP64 |
| return rv; |
| } |
| |
| inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { |
| return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); |
| } |
| |
| |
| 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; |
| #ifdef _LP64 |
| __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"); |
| #else //_LP64 |
| __asm__ volatile( |
| "swap [%2],%1\n\t" |
| : "=r" (rv) |
| : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) |
| : "memory"); |
| #endif // _LP64 |
| 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); |
| } |
| |
| |
| inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { |
| jint rv; |
| __asm__ volatile( |
| " cas [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| return rv; |
| } |
| |
| inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { |
| #ifdef _LP64 |
| jlong rv; |
| __asm__ volatile( |
| " casx [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| return rv; |
| #else //_LP64 |
| assert(VM_Version::v9_instructions_work(), "cas only supported on v9"); |
| volatile jlong_accessor evl, cvl, rv; |
| evl.long_value = exchange_value; |
| cvl.long_value = compare_value; |
| |
| __asm__ volatile( |
| " sllx %2, 32, %2\n\t" |
| " srl %3, 0, %3\n\t" |
| " or %2, %3, %2\n\t" |
| " sllx %5, 32, %5\n\t" |
| " srl %6, 0, %6\n\t" |
| " or %5, %6, %5\n\t" |
| " casx [%4], %5, %2\n\t" |
| " srl %2, 0, %1\n\t" |
| " srlx %2, 32, %0\n\t" |
| : "=r" (rv.words[0]), "=r" (rv.words[1]) |
| : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1]) |
| : "memory"); |
| |
| return rv.long_value; |
| #endif //_LP64 |
| } |
| |
| inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { |
| intptr_t rv; |
| #ifdef _LP64 |
| __asm__ volatile( |
| " casx [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| #else //_LP64 |
| __asm__ volatile( |
| " cas [%2], %3, %0" |
| : "=r" (rv) |
| : "0" (exchange_value), "r" (dest), "r" (compare_value) |
| : "memory"); |
| #endif // _LP64 |
| return rv; |
| } |
| |
| inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { |
| return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value); |
| } |
| |
| #else // _GNU_SOURCE |
| |
| #if defined(COMPILER2) || defined(_LP64) |
| |
| // This is the interface to the atomic instructions in solaris_sparc.il. |
| // It's very messy because we need to support v8 and these instructions |
| // are illegal there. When sparc v8 is dropped, we can drop out lots of |
| // this code. Also compiler2 does not support v8 so the conditional code |
| // omits the instruction set check. |
| |
| extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest); |
| extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest); |
| |
| extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value); |
| extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
| extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value); |
| |
| extern "C" jint _Atomic_add32(jint inc, volatile jint* dest); |
| extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest); |
| |
| |
| inline jint Atomic::add (jint add_value, volatile jint* dest) { |
| return _Atomic_add32(add_value, dest); |
| } |
| |
| inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { |
| #ifdef _LP64 |
| return _Atomic_add64(add_value, dest); |
| #else //_LP64 |
| return _Atomic_add32(add_value, dest); |
| #endif // _LP64 |
| } |
| |
| inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { |
| return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); |
| } |
| |
| |
| inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { |
| return _Atomic_swap32(exchange_value, dest); |
| } |
| |
| inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { |
| #ifdef _LP64 |
| return _Atomic_swap64(exchange_value, dest); |
| #else // _LP64 |
| return _Atomic_swap32(exchange_value, dest); |
| #endif // _LP64 |
| } |
| |
| inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { |
| return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); |
| } |
| |
| |
| inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { |
| return _Atomic_cas32(exchange_value, dest, compare_value); |
| } |
| |
| inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { |
| #ifdef _LP64 |
| // Return 64 bit value in %o0 |
| return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value); |
| #else // _LP64 |
| assert (VM_Version::v9_instructions_work(), "only supported on v9"); |
| // Return 64 bit value in %o0,%o1 by hand |
| return _Atomic_casl(exchange_value, dest, compare_value); |
| #endif // _LP64 |
| } |
| |
| inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { |
| #ifdef _LP64 |
| return _Atomic_cas64(exchange_value, dest, compare_value); |
| #else // _LP64 |
| return _Atomic_cas32(exchange_value, dest, compare_value); |
| #endif // _LP64 |
| } |
| |
| inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { |
| return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value); |
| } |
| |
| |
| #else // _LP64 || COMPILER2 |
| |
| |
| // 32-bit compiler1 only |
| |
| inline jint Atomic::add (jint add_value, volatile jint* dest) { |
| return (*os::atomic_add_func)(add_value, dest); |
| } |
| |
| 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 jint Atomic::xchg (jint exchange_value, volatile jint* dest) { |
| return (*os::atomic_xchg_func)(exchange_value, 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 jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { |
| return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value); |
| } |
| |
| inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { |
| return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value); |
| } |
| |
| 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); |
| } |
| |
| #endif // _LP64 || COMPILER2 |
| |
| #endif // _GNU_SOURCE |
