[BACK]Return to atomic_add.S CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / common / lib / libc / arch / sparc64 / atomic

File: [cvs.NetBSD.org] / src / common / lib / libc / arch / sparc64 / atomic / atomic_add.S (download)

Revision 1.7, Sun Oct 18 02:28:07 2015 UTC (8 years, 5 months ago) by nakayama
Branch: MAIN
CVS Tags: tls-maxphys-20171202, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-xenpvh-base2, bouyer-xenpvh-base1, bouyer-xenpvh-base, bouyer-xenpvh, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, ad-namecache-base3, ad-namecache-base, ad-namecache
Branch point for: phil-wifi
Changes since 1.6: +25 -1 lines

Fix 64-bit atomic operations on 32-bit kernel and userland, and add
support for missing __sync_*_8 builtins.

/*	$NetBSD: atomic_add.S,v 1.7 2015/10/18 02:28:07 nakayama Exp $	*/

/*-
 * Copyright (c) 2007 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * 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.
 *      
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

#include "atomic_op_asm.h"

	.text

ENTRY(_atomic_add_32)
	ld	[%o0], %o2
1:	add	%o1, %o2, %o3
	cas	[%o0], %o2, %o3
	cmp	%o2, %o3
	bne,a,pn %icc, 1b
	 mov	%o3, %o2
	retl
	 add	%o1, %o2, %o0
ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
STRONG_ALIAS(_atomic_add_int,_atomic_add_32)

ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32)
STRONG_ALIAS(_atomic_add_32_nv,_atomic_add_32)
ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32)
STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32)

ENTRY(_atomic_add_64)
#ifndef __arch64__
	COMBINE(%o1, %o2, %o1)
#endif
	ldx	[%o0], %o2
1:	add	%o1, %o2, %o3
	casx	[%o0], %o2, %o3
	cmp	%o2, %o3
	bne,a,pn %xcc, 1b
	 mov	%o3, %o2
#ifdef __arch64__
	retl
	 add	%o1, %o2, %o0
#else
	add	%o1, %o2, %o0
	SPLIT_RETL(%o0, %o0, %o1)
#endif
ATOMIC_OP_ALIAS(atomic_add_64,_atomic_add_64)

ATOMIC_OP_ALIAS(atomic_add_64_nv,_atomic_add_64)
STRONG_ALIAS(_atomic_add_64_nv,_atomic_add_64)

ATOMIC_OP_ALIAS_SIZE(atomic_add_long,_atomic_add)
STRONG_ALIAS_SIZE(_atomic_add_long,_atomic_add)
ATOMIC_OP_ALIAS_SIZE(atomic_add_ptr,_atomic_add)
STRONG_ALIAS_SIZE(_atomic_add_ptr,_atomic_add)

ATOMIC_OP_ALIAS_SIZE(atomic_add_long_nv,_atomic_add)
STRONG_ALIAS_SIZE(_atomic_add_long_nv,_atomic_add)
ATOMIC_OP_ALIAS_SIZE(atomic_add_ptr_nv,_atomic_add)
STRONG_ALIAS_SIZE(_atomic_add_ptr_nv,_atomic_add)

#if !defined(__arch64__) && defined(CRT_ALIAS)
ENTRY(__sync_fetch_and_add_8)
	COMBINE(%o1, %o2, %o1)
	ldx	[%o0], %o2
1:	add	%o1, %o2, %o3
	casx	[%o0], %o2, %o3
	cmp	%o2, %o3
	bne,a,pn %xcc, 1b
	 mov	%o3, %o2
	SPLIT_RETL(%o2, %o0, %o1)
CRT_ALIAS(__sync_add_and_fetch_8,_atomic_add_64_nv)

CRT_ALIAS(__atomic_fetch_add_8,__sync_fetch_and_add_8)
CRT_ALIAS(__atomic_add_fetch_8,__sync_add_and_fetch_8)
#endif