1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,251 @@
1.4 +/*
1.5 + * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// The following alternative implementations are needed because
1.29 +// Windows 95 doesn't support (some of) the corresponding Windows NT
1.30 +// calls. Furthermore, these versions allow inlining in the caller.
1.31 +// (More precisely: The documentation for InterlockedExchange says
1.32 +// it is supported for Windows 95. However, when single-stepping
1.33 +// through the assembly code we cannot step into the routine and
1.34 +// when looking at the routine address we see only garbage code.
1.35 +// Better safe then sorry!). Was bug 7/31/98 (gri).
1.36 +//
1.37 +// Performance note: On uniprocessors, the 'lock' prefixes are not
1.38 +// necessary (and expensive). We should generate separate cases if
1.39 +// this becomes a performance problem.
1.40 +
1.41 +#pragma warning(disable: 4035) // Disables warnings reporting missing return statement
1.42 +
1.43 +inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
1.44 +inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
1.45 +inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
1.46 +
1.47 +inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
1.48 +inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
1.49 +
1.50 +inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
1.51 +inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
1.52 +inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
1.53 +
1.54 +
1.55 +inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
1.56 +inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
1.57 +
1.58 +// Adding a lock prefix to an instruction on MP machine
1.59 +// VC++ doesn't like the lock prefix to be on a single line
1.60 +// so we can't insert a label after the lock prefix.
1.61 +// By emitting a lock prefix, we can define a label after it.
1.62 +#define LOCK_IF_MP(mp) __asm cmp mp, 0 \
1.63 + __asm je L0 \
1.64 + __asm _emit 0xF0 \
1.65 + __asm L0:
1.66 +
1.67 +#ifdef AMD64
1.68 +inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
1.69 +inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
1.70 +
1.71 +inline jint Atomic::add (jint add_value, volatile jint* dest) {
1.72 + return (jint)(*os::atomic_add_func)(add_value, dest);
1.73 +}
1.74 +
1.75 +inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
1.76 + return (intptr_t)(*os::atomic_add_ptr_func)(add_value, dest);
1.77 +}
1.78 +
1.79 +inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
1.80 + return (void*)(*os::atomic_add_ptr_func)(add_value, (volatile intptr_t*)dest);
1.81 +}
1.82 +
1.83 +inline void Atomic::inc (volatile jint* dest) {
1.84 + (void)add (1, dest);
1.85 +}
1.86 +
1.87 +inline void Atomic::inc_ptr(volatile intptr_t* dest) {
1.88 + (void)add_ptr(1, dest);
1.89 +}
1.90 +
1.91 +inline void Atomic::inc_ptr(volatile void* dest) {
1.92 + (void)add_ptr(1, dest);
1.93 +}
1.94 +
1.95 +inline void Atomic::dec (volatile jint* dest) {
1.96 + (void)add (-1, dest);
1.97 +}
1.98 +
1.99 +inline void Atomic::dec_ptr(volatile intptr_t* dest) {
1.100 + (void)add_ptr(-1, dest);
1.101 +}
1.102 +
1.103 +inline void Atomic::dec_ptr(volatile void* dest) {
1.104 + (void)add_ptr(-1, dest);
1.105 +}
1.106 +
1.107 +inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
1.108 + return (jint)(*os::atomic_xchg_func)(exchange_value, dest);
1.109 +}
1.110 +
1.111 +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
1.112 + return (intptr_t)(os::atomic_xchg_ptr_func)(exchange_value, dest);
1.113 +}
1.114 +
1.115 +inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
1.116 + return (void *)(os::atomic_xchg_ptr_func)((intptr_t)exchange_value, (volatile intptr_t*)dest);
1.117 +}
1.118 +
1.119 +inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
1.120 + return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value);
1.121 +}
1.122 +
1.123 +inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
1.124 + return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value);
1.125 +}
1.126 +
1.127 +inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
1.128 + return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
1.129 +}
1.130 +
1.131 +inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
1.132 + return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
1.133 +}
1.134 +
1.135 +#else // !AMD64
1.136 +
1.137 +//inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
1.138 +//inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
1.139 +inline jint Atomic::add (jint add_value, volatile jint* dest) {
1.140 + int mp = os::is_MP();
1.141 + __asm {
1.142 + mov edx, dest;
1.143 + mov eax, add_value;
1.144 + mov ecx, eax;
1.145 + LOCK_IF_MP(mp)
1.146 + xadd dword ptr [edx], eax;
1.147 + add eax, ecx;
1.148 + }
1.149 +}
1.150 +
1.151 +inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
1.152 + return (intptr_t)add((jint)add_value, (volatile jint*)dest);
1.153 +}
1.154 +
1.155 +inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
1.156 + return (void*)add((jint)add_value, (volatile jint*)dest);
1.157 +}
1.158 +
1.159 +inline void Atomic::inc (volatile jint* dest) {
1.160 + // alternative for InterlockedIncrement
1.161 + int mp = os::is_MP();
1.162 + __asm {
1.163 + mov edx, dest;
1.164 + LOCK_IF_MP(mp)
1.165 + add dword ptr [edx], 1;
1.166 + }
1.167 +}
1.168 +
1.169 +inline void Atomic::inc_ptr(volatile intptr_t* dest) {
1.170 + inc((volatile jint*)dest);
1.171 +}
1.172 +
1.173 +inline void Atomic::inc_ptr(volatile void* dest) {
1.174 + inc((volatile jint*)dest);
1.175 +}
1.176 +
1.177 +inline void Atomic::dec (volatile jint* dest) {
1.178 + // alternative for InterlockedDecrement
1.179 + int mp = os::is_MP();
1.180 + __asm {
1.181 + mov edx, dest;
1.182 + LOCK_IF_MP(mp)
1.183 + sub dword ptr [edx], 1;
1.184 + }
1.185 +}
1.186 +
1.187 +inline void Atomic::dec_ptr(volatile intptr_t* dest) {
1.188 + dec((volatile jint*)dest);
1.189 +}
1.190 +
1.191 +inline void Atomic::dec_ptr(volatile void* dest) {
1.192 + dec((volatile jint*)dest);
1.193 +}
1.194 +
1.195 +inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
1.196 + // alternative for InterlockedExchange
1.197 + __asm {
1.198 + mov eax, exchange_value;
1.199 + mov ecx, dest;
1.200 + xchg eax, dword ptr [ecx];
1.201 + }
1.202 +}
1.203 +
1.204 +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
1.205 + return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
1.206 +}
1.207 +
1.208 +inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
1.209 + return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
1.210 +}
1.211 +
1.212 +inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
1.213 + // alternative for InterlockedCompareExchange
1.214 + int mp = os::is_MP();
1.215 + __asm {
1.216 + mov edx, dest
1.217 + mov ecx, exchange_value
1.218 + mov eax, compare_value
1.219 + LOCK_IF_MP(mp)
1.220 + cmpxchg dword ptr [edx], ecx
1.221 + }
1.222 +}
1.223 +
1.224 +inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
1.225 + int mp = os::is_MP();
1.226 + jint ex_lo = (jint)exchange_value;
1.227 + jint ex_hi = *( ((jint*)&exchange_value) + 1 );
1.228 + jint cmp_lo = (jint)compare_value;
1.229 + jint cmp_hi = *( ((jint*)&compare_value) + 1 );
1.230 + __asm {
1.231 + push ebx
1.232 + push edi
1.233 + mov eax, cmp_lo
1.234 + mov edx, cmp_hi
1.235 + mov edi, dest
1.236 + mov ebx, ex_lo
1.237 + mov ecx, ex_hi
1.238 + LOCK_IF_MP(mp)
1.239 + cmpxchg8b qword ptr [edi]
1.240 + pop edi
1.241 + pop ebx
1.242 + }
1.243 +}
1.244 +
1.245 +inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
1.246 + return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
1.247 +}
1.248 +
1.249 +inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
1.250 + return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
1.251 +}
1.252 +#endif // AMD64
1.253 +
1.254 +#pragma warning(default: 4035) // Enables warnings reporting missing return statement
