| 1 | /*
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| 2 | * interlocked functions
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| 3 | *
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| 4 | * Copyright 1996 Alexandre Julliard
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Lesser General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2.1 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public
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| 17 | * License along with this library; if not, write to the Free Software
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| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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| 19 | */
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| 20 |
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| 21 | #include "windef.h"
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| 22 | extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare );
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| 23 |
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| 24 | __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare) {
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| 25 | __asm(
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| 26 | "push %ebx\n\t"
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| 27 | "push %esi\n\t"
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| 28 | "movl 12(%esp),%esi\n\t"
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| 29 | "movl 16(%esp),%ebx\n\t"
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| 30 | "movl 20(%esp),%ecx\n\t"
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| 31 | "movl 24(%esp),%eax\n\t"
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| 32 | "movl 28(%esp),%edx\n\t"
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| 33 | "lock; cmpxchg8b (%esi)\n\t"
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| 34 | "pop %esi\n\t"
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| 35 | "pop %ebx\n\t"
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| 36 | "ret");
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| 37 | }
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