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-rw-r--r--lib/libkse/arch/powerpc/include/atomic_ops.h62
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diff --git a/lib/libkse/arch/powerpc/include/atomic_ops.h b/lib/libkse/arch/powerpc/include/atomic_ops.h
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--- a/lib/libkse/arch/powerpc/include/atomic_ops.h
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-/*
- * Copyright 2004 by Peter Grehan. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#ifndef _ATOMIC_OPS_H_
-#define _ATOMIC_OPS_H_
-
-/*
- * Atomic swap:
- * Atomic (tmp = *dst, *dst = val), then *res = tmp
- *
- * void atomic_swap32(intptr_t *dst, intptr_t val, intptr_t *res);
- */
-static inline void
-atomic_swap32(volatile intptr_t *dst, intptr_t val, intptr_t *res)
-{
- int tmp;
-
- tmp = 0; /* should be a better way to quieten cc1... */
-#ifdef __GNUC__
- __asm __volatile(
- "1: lwarx %0, 0, %4\n" /* load with reservation */
- " stwcx. %3, 0, %4\n" /* attempt to store val */
- " bne- 1b\n" /* interrupted? retry */
- " stw %0, %1\n" /* else, *dst -> *res */
- : "=&r" (tmp), "=m" (*res), "+m" (*dst)
- : "r" (val), "r" (dst)
- : "cc", "memory");
-#endif
-}
-
-#define atomic_swap_ptr(d, v, r) \
- atomic_swap32((volatile intptr_t *)d, (intptr_t)v, (intptr_t *)r)
-
-#define atomic_swap_int(d, v, r) \
- atomic_swap32((volatile intptr_t *)d, (intptr_t)v, (intptr_t *)r)
-#endif
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