diff options
Diffstat (limited to '')
| -rw-r--r-- | lib/isc/sparc64/include/Makefile.in | 17 | ||||
| -rw-r--r-- | lib/isc/sparc64/include/isc/Makefile.in | 29 | ||||
| -rw-r--r-- | lib/isc/sparc64/include/isc/atomic.h | 122 |
3 files changed, 168 insertions, 0 deletions
diff --git a/lib/isc/sparc64/include/Makefile.in b/lib/isc/sparc64/include/Makefile.in new file mode 100644 index 0000000..d33c0fc --- /dev/null +++ b/lib/isc/sparc64/include/Makefile.in @@ -0,0 +1,17 @@ +# Copyright (C) Internet Systems Consortium, Inc. ("ISC") +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. +# +# See the COPYRIGHT file distributed with this work for additional +# information regarding copyright ownership. + +srcdir = @srcdir@ +VPATH = @srcdir@ +top_srcdir = @top_srcdir@ + +SUBDIRS = isc +TARGETS = + +@BIND9_MAKE_RULES@ diff --git a/lib/isc/sparc64/include/isc/Makefile.in b/lib/isc/sparc64/include/isc/Makefile.in new file mode 100644 index 0000000..6075633 --- /dev/null +++ b/lib/isc/sparc64/include/isc/Makefile.in @@ -0,0 +1,29 @@ +# Copyright (C) Internet Systems Consortium, Inc. ("ISC") +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. +# +# See the COPYRIGHT file distributed with this work for additional +# information regarding copyright ownership. + +srcdir = @srcdir@ +VPATH = @srcdir@ +top_srcdir = @top_srcdir@ + +VERSION=@BIND9_VERSION@ + +HEADERS = atomic.h + +SUBDIRS = +TARGETS = + +@BIND9_MAKE_RULES@ + +installdirs: + $(SHELL) ${top_srcdir}/mkinstalldirs ${DESTDIR}${includedir}/isc + +install:: installdirs + for i in ${HEADERS}; do \ + ${INSTALL_DATA} $(srcdir)/$$i ${DESTDIR}${includedir}/isc || exit 1; \ + done diff --git a/lib/isc/sparc64/include/isc/atomic.h b/lib/isc/sparc64/include/isc/atomic.h new file mode 100644 index 0000000..21ec67e --- /dev/null +++ b/lib/isc/sparc64/include/isc/atomic.h @@ -0,0 +1,122 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +/* + * This code was written based on FreeBSD's kernel source whose copyright + * follows: + */ + +/*- + * Copyright (c) 1998 Doug Rabson. + * Copyright (c) 2001 Jake Burkholder. + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + * from: FreeBSD: src/sys/i386/include/atomic.h,v 1.20 2001/02/11 + * $FreeBSD: src/sys/sparc64/include/atomic.h,v 1.8 2004/05/22 00:52:16 marius Exp $ + */ + +#ifndef ISC_ATOMIC_H +#define ISC_ATOMIC_H 1 + +#include <inttypes.h> + +#include <isc/platform.h> +#include <isc/types.h> + +#define ASI_P 0x80 /* Primary Address Space Identifier */ + +#ifdef ISC_PLATFORM_USEGCCASM + +/* + * This routine atomically increments the value stored in 'p' by 'val', and + * returns the previous value. + */ +static inline int32_t +isc_atomic_xadd(int32_t *p, int32_t val) { + int32_t prev, swapped; + + for (prev = *(volatile int32_t *)p; ; prev = swapped) { + swapped = prev + val; + __asm__ volatile( + "casa [%2] %3, %4, %0" + : "+r"(swapped), "=m"(*p) + : "r"(p), "n"(ASI_P), "r"(prev), "m"(*p)); + if (swapped == prev) + break; + } + + return (prev); +} + +/* + * This routine atomically stores the value 'val' in 'p'. + */ +static inline void +isc_atomic_store(int32_t *p, int32_t val) { + int32_t prev, swapped; + + for (prev = *(volatile int32_t *)p; ; prev = swapped) { + swapped = val; + __asm__ volatile( + "casa [%2] %3, %4, %0" + : "+r"(swapped), "=m"(*p) + : "r"(p), "n"(ASI_P), "r"(prev), "m"(*p)); + if (swapped == prev) + break; + } +} + +/* + * This routine atomically replaces the value in 'p' with 'val', if the + * original value is equal to 'cmpval'. The original value is returned in any + * case. + */ +static inline int32_t +isc_atomic_cmpxchg(int32_t *p, int32_t cmpval, int32_t val) { + int32_t temp = val; + + __asm__ volatile( + "casa [%2] %3, %4, %0" + : "+r"(temp), "=m"(*p) + : "r"(p), "n"(ASI_P), "r"(cmpval), "m"(*p)); + + return (temp); +} + +#else /* ISC_PLATFORM_USEGCCASM */ + +#error "unsupported compiler. disable atomic ops by --disable-atomic" + +#endif /* ISC_PLATFORM_USEGCCASM */ + +#endif /* ISC_ATOMIC_H */ |