f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
88 lines
2.6 KiB
ArmAsm
88 lines
2.6 KiB
ArmAsm
/* $NetBSD: atomic_swap.S,v 1.4 2012/03/14 16:50:34 christos Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#include "atomic_op_asm.h"
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RCSID("$NetBSD: atomic_swap.S,v 1.4 2012/03/14 16:50:34 christos Exp $")
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.text
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.set noreorder
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#ifdef _KERNEL_OPT
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#include "opt_cputype.h"
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#ifndef MIPS3_LOONGSON2F
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.set noat
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.set nomacro
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#endif
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#else /* _KERNEL_OPT */
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.set noat
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.set nomacro
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#endif /* _KERNEL_OPT */
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LEAF(_atomic_swap_32)
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1: INT_LL v0, 0(a0)
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nop
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move t0, a1
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INT_SC t0, 0(a0)
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beq t0, zero, 1b
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nop
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2:
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j ra
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nop
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END(_atomic_swap_32)
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ATOMIC_OP_ALIAS(atomic_swap_32, _atomic_swap_32)
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#if !defined(__mips_o32)
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LEAF(_atomic_swap_64)
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1: REG_LL v0, 0(a0)
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nop
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move t0, a1
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REG_SC t0, 0(a0)
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beq t0, zero, 1b
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nop
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2:
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j ra
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nop
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END(_atomic_swap_64)
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ATOMIC_OP_ALIAS(atomic_swap_64, _atomic_swap_64)
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#endif
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#ifdef _LP64
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STRONG_ALIAS(_atomic_swap_ptr, _atomic_swap_64)
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STRONG_ALIAS(_atomic_swap_ulong, _atomic_swap_64)
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#else
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STRONG_ALIAS(_atomic_swap_ptr, _atomic_swap_32)
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STRONG_ALIAS(_atomic_swap_ulong, _atomic_swap_32)
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#endif
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STRONG_ALIAS(_atomic_swap_uint, _atomic_swap_32)
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ATOMIC_OP_ALIAS(atomic_swap_ptr, _atomic_swap_ptr)
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ATOMIC_OP_ALIAS(atomic_swap_uint, _atomic_swap_uint)
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ATOMIC_OP_ALIAS(atomic_swap_ulong, _atomic_swap_ulong)
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