Module Name: src Committed By: martin Date: Fri Feb 21 10:52:50 UTC 2014
Added Files: src/common/lib/libc/atomic: atomic_cas_32_cas.c atomic_nand_32_cas.c atomic_sub_32_cas.c atomic_xor_32_cas.c Log Message: Provide 32bit __sync ops based on atomic_cas_32. To generate a diff of this commit: cvs rdiff -u -r0 -r1.1 src/common/lib/libc/atomic/atomic_cas_32_cas.c \ src/common/lib/libc/atomic/atomic_nand_32_cas.c \ src/common/lib/libc/atomic/atomic_sub_32_cas.c \ src/common/lib/libc/atomic/atomic_xor_32_cas.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Added files: Index: src/common/lib/libc/atomic/atomic_cas_32_cas.c diff -u /dev/null src/common/lib/libc/atomic/atomic_cas_32_cas.c:1.1 --- /dev/null Fri Feb 21 10:52:50 2014 +++ src/common/lib/libc/atomic/atomic_cas_32_cas.c Fri Feb 21 10:52:50 2014 @@ -0,0 +1,45 @@ +/* $NetBSD: atomic_cas_32_cas.c,v 1.1 2014/02/21 10:52:50 martin Exp $ */ + +/*- + * Copyright (c) 2014 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. + */ + +#if !defined(_KERNEL) && !defined(_STANDALONE) +#include <stdbool.h> +#endif +#include <sys/atomic.h> + +bool bool_compare_and_swap_4(volatile uint32_t *, uint32_t, uint32_t, ...) + asm("__sync_bool_compare_and_swap_4"); + +bool +bool_compare_and_swap_4(volatile uint32_t *addr, uint32_t oldval, + uint32_t newval, ...) +{ + return atomic_cas_32(addr, oldval, newval) == oldval; +} Index: src/common/lib/libc/atomic/atomic_nand_32_cas.c diff -u /dev/null src/common/lib/libc/atomic/atomic_nand_32_cas.c:1.1 --- /dev/null Fri Feb 21 10:52:50 2014 +++ src/common/lib/libc/atomic/atomic_nand_32_cas.c Fri Feb 21 10:52:50 2014 @@ -0,0 +1,61 @@ +/* $NetBSD: atomic_nand_32_cas.c,v 1.1 2014/02/21 10:52:50 martin Exp $ */ + +/*- + * Copyright (c) 2014 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 <sys/atomic.h> + +uint32_t fetch_and_nand_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_fetch_and_nand_4"); +uint32_t nand_and_fetch_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_nand_and_fetch_4"); + +uint32_t +fetch_and_nand_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = ~(old & val); + } while (atomic_cas_32(addr, old, new) != old); + return old; +} + +uint32_t +nand_and_fetch_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = ~(old & val); + } while (atomic_cas_32(addr, old, new) != old); + return new; +} Index: src/common/lib/libc/atomic/atomic_sub_32_cas.c diff -u /dev/null src/common/lib/libc/atomic/atomic_sub_32_cas.c:1.1 --- /dev/null Fri Feb 21 10:52:50 2014 +++ src/common/lib/libc/atomic/atomic_sub_32_cas.c Fri Feb 21 10:52:50 2014 @@ -0,0 +1,61 @@ +/* $NetBSD: atomic_sub_32_cas.c,v 1.1 2014/02/21 10:52:50 martin Exp $ */ + +/*- + * Copyright (c) 2014 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 <sys/atomic.h> + +uint32_t fetch_and_sub_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_fetch_and_sub_4"); +uint32_t sub_and_fetch_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_sub_and_fetch_4"); + +uint32_t +fetch_and_sub_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = old - val; + } while (atomic_cas_32(addr, old, new) != old); + return old; +} + +uint32_t +sub_and_fetch_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = old - val; + } while (atomic_cas_32(addr, old, new) != old); + return new; +} Index: src/common/lib/libc/atomic/atomic_xor_32_cas.c diff -u /dev/null src/common/lib/libc/atomic/atomic_xor_32_cas.c:1.1 --- /dev/null Fri Feb 21 10:52:50 2014 +++ src/common/lib/libc/atomic/atomic_xor_32_cas.c Fri Feb 21 10:52:50 2014 @@ -0,0 +1,61 @@ +/* $NetBSD: atomic_xor_32_cas.c,v 1.1 2014/02/21 10:52:50 martin Exp $ */ + +/*- + * Copyright (c) 2014 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 <sys/atomic.h> + +uint32_t fetch_and_xor_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_fetch_and_xor_4"); +uint32_t xor_and_fetch_4(volatile uint32_t *, uint32_t, ...) + asm("__sync_xor_and_fetch_4"); + +uint32_t +fetch_and_xor_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = old ^ val; + } while (atomic_cas_32(addr, old, new) != old); + return old; +} + +uint32_t +xor_and_fetch_4(volatile uint32_t *addr, uint32_t val, ...) +{ + uint32_t old, new; + + do { + old = *addr; + new = old ^ val; + } while (atomic_cas_32(addr, old, new) != old); + return new; +}