diff options
Diffstat (limited to 'lib/isc/powerpc/include')
| -rw-r--r-- | lib/isc/powerpc/include/Makefile.in | 17 | ||||
| -rw-r--r-- | lib/isc/powerpc/include/isc/Makefile.in | 34 | ||||
| -rw-r--r-- | lib/isc/powerpc/include/isc/atomic.h | 193 |
3 files changed, 244 insertions, 0 deletions
diff --git a/lib/isc/powerpc/include/Makefile.in b/lib/isc/powerpc/include/Makefile.in new file mode 100644 index 0000000..d33c0fc --- /dev/null +++ b/lib/isc/powerpc/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/powerpc/include/isc/Makefile.in b/lib/isc/powerpc/include/isc/Makefile.in new file mode 100644 index 0000000..97b6b41 --- /dev/null +++ b/lib/isc/powerpc/include/isc/Makefile.in @@ -0,0 +1,34 @@ +# 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)/$$i ${DESTDIR}${includedir}/isc || exit 1; \ + done + +uninstall:: + for i in ${HEADERS}; do \ + rm -f ${DESTDIR}${includedir}/isc/$$i || exit 1; \ + done diff --git a/lib/isc/powerpc/include/isc/atomic.h b/lib/isc/powerpc/include/isc/atomic.h new file mode 100644 index 0000000..9899934 --- /dev/null +++ b/lib/isc/powerpc/include/isc/atomic.h @@ -0,0 +1,193 @@ +/* + * 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. + */ + + +#ifndef ISC_ATOMIC_H +#define ISC_ATOMIC_H 1 + +#include <inttypes.h> + +#include <isc/platform.h> +#include <isc/types.h> + +/*!\file + * static inline int32_t + * isc_atomic_xadd(int32_t *p, int32_t val); + * + * This routine atomically increments the value stored in 'p' by 'val', and + * returns the previous value. + * + * static inline void + * isc_atomic_store(void *p, int32_t val); + * + * This routine atomically stores the value 'val' in 'p'. + * + * static inline int32_t + * isc_atomic_cmpxchg(int32_t *p, int32_t cmpval, int32_t val); + * + * 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. + */ + +#if defined(_AIX) + +#include <sys/atomic_op.h> + +#define isc_atomic_store(p, v) _clear_lock(p, v) + +#ifdef __GNUC__ +static inline int32_t +#else +static int32_t +#endif +isc_atomic_xadd(int32_t *p, int32_t val) { + int ret; + +#ifdef __GNUC__ + asm("ics"); +#else + __isync(); +#endif + + ret = fetch_and_add((atomic_p)p, (int)val); + +#ifdef __GNUC__ + asm("ics"); +#else + __isync(); +#endif + + return (ret); +} + +#ifdef __GNUC__ +static inline int +#else +static int +#endif +isc_atomic_cmpxchg(atomic_p p, int old, int replacement) { + int orig = old; + +#ifdef __GNUC__ + asm("ics"); +#else + __isync(); +#endif + if (compare_and_swap(p, &orig, replacement)) + orig = old; + +#ifdef __GNUC__ + asm("ics"); +#else + __isync(); +#endif + + return (orig); +} + +#elif defined(ISC_PLATFORM_USEGCCASM) || defined(ISC_PLATFORM_USEMACASM) +static inline int32_t +isc_atomic_xadd(int32_t *p, int32_t val) { + int32_t orig; + + __asm__ volatile ( +#ifdef ISC_PLATFORM_USEMACASM + "1:" + "lwarx r6, 0, %1\n" + "mr %0, r6\n" + "add r6, r6, %2\n" + "stwcx. r6, 0, %1\n" + "bne- 1b\n" + "sync" +#else + "1:" + "lwarx 6, 0, %1\n" + "mr %0, 6\n" + "add 6, 6, %2\n" + "stwcx. 6, 0, %1\n" + "bne- 1b\n" + "sync" +#endif + : "=&r"(orig) + : "r"(p), "r"(val) + : "r6", "memory" + ); + + return (orig); +} + +static inline void +isc_atomic_store(void *p, int32_t val) { + __asm__ volatile ( +#ifdef ISC_PLATFORM_USEMACASM + "1:" + "lwarx r6, 0, %0\n" + "lwz r6, %1\n" + "stwcx. r6, 0, %0\n" + "bne- 1b\n" + "sync" +#else + "1:" + "lwarx 6, 0, %0\n" + "lwz 6, %1\n" + "stwcx. 6, 0, %0\n" + "bne- 1b\n" + "sync" +#endif + : + : "r"(p), "m"(val) + : "r6", "memory" + ); +} + +static inline int32_t +isc_atomic_cmpxchg(int32_t *p, int32_t cmpval, int32_t val) { + int32_t orig; + + __asm__ volatile ( +#ifdef ISC_PLATFORM_USEMACASM + "1:" + "lwarx r6, 0, %1\n" + "mr %0,r6\n" + "cmpw r6, %2\n" + "bne 2f\n" + "mr r6, %3\n" + "stwcx. r6, 0, %1\n" + "bne- 1b\n" + "2:\n" + "sync" +#else + "1:" + "lwarx 6, 0, %1\n" + "mr %0,6\n" + "cmpw 6, %2\n" + "bne 2f\n" + "mr 6, %3\n" + "stwcx. 6, 0, %1\n" + "bne- 1b\n" + "2:\n" + "sync" +#endif + : "=&r" (orig) + : "r"(p), "r"(cmpval), "r"(val) + : "r6", "memory" + ); + + return (orig); +} + +#else + +#error "unsupported compiler. disable atomic ops by --disable-atomic" + +#endif +#endif /* ISC_ATOMIC_H */ |