0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
70 lines
2.4 KiB
ArmAsm
70 lines
2.4 KiB
ArmAsm
/* $NetBSD: atomic_cas_up.S,v 1.2 2014/01/29 13:06:36 martin Exp $ */
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/*-
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* Copyright (c) 2012 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 <sys/ras.h>
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#include "atomic_op_asm.h"
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.text
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ENTRY(_atomic_cas_up)
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.hidden _C_LABEL(_atomic_cas_up)
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RAS_START_ASM_HIDDEN(_atomic_cas)
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ld [%o0], %o3 ! get old value
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cmp %o1, %o3 ! old == new?
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beq,a 1f ! yes, do the store
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st %o2, [%o0] ! (in the delay slot)
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RAS_END_ASM_HIDDEN(_atomic_cas)
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1:
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retl
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mov %o3, %o0 ! return old value
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ENTRY(_atomic_cas_16_up)
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.hidden _C_LABEL(_atomic_cas_16_up)
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RAS_START_ASM_HIDDEN(_atomic_cas_16)
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lduh [%o0], %o3 ! get old value
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cmp %o1, %o3 ! old == new?
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beq,a 1f ! yes, do the store
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sth %o2, [%o0] ! (in the delay slot)
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RAS_END_ASM_HIDDEN(_atomic_cas_16)
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1:
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retl
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mov %o3, %o0 ! return old value
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ENTRY(_atomic_cas_8_up)
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.hidden _C_LABEL(_atomic_cas_8_up)
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RAS_START_ASM_HIDDEN(_atomic_cas_8)
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ldub [%o0], %o3 ! get old value
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cmp %o1, %o3 ! old == new?
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beq,a 1f ! yes, do the store
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stb %o2, [%o0] ! (in the delay slot)
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RAS_END_ASM_HIDDEN(_atomic_cas_8)
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1:
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retl
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mov %o3, %o0 ! return old value
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