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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_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP

 #define OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP

 #include "orderAccess_solaris_sparc.inline.hpp"

 #include "runtime/atomic.hpp"

 #include "runtime/os.hpp"

 #include "vm_version_sparc.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_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); }

 #ifdef _LP64

 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; }

 inline jlong Atomic::load(volatile jlong* src) { return *src; }

 #else

 extern "C" void _Atomic_move_long_v8(volatile jlong* src, volatile jlong* dst);

 extern "C" void _Atomic_move_long_v9(volatile jlong* src, volatile jlong* dst);

 inline void Atomic_move_long(volatile jlong* src, volatile jlong* dst) {

 #ifdef COMPILER2

   // Compiler2 does not support v8, it is used only for v9.

   _Atomic_move_long_v9(src, dst);

 #else

   // The branch is cheaper then emulated LDD.

   if (VM_Version::v9_instructions_work()) {

     _Atomic_move_long_v9(src, dst);

   } else {

     _Atomic_move_long_v8(src, dst);

   }

 #endif

 }

 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

 #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

 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP