diff options
Diffstat (limited to 'lib/isc/x86_64')
| -rw-r--r-- | lib/isc/x86_64/Makefile.in | 17 | ||||
| -rw-r--r-- | lib/isc/x86_64/include/Makefile.in | 17 | ||||
| -rw-r--r-- | lib/isc/x86_64/include/isc/Makefile.in | 34 | ||||
| -rw-r--r-- | lib/isc/x86_64/include/isc/atomic.h | 139 |
4 files changed, 207 insertions, 0 deletions
diff --git a/lib/isc/x86_64/Makefile.in b/lib/isc/x86_64/Makefile.in new file mode 100644 index 0000000..419cf9f --- /dev/null +++ b/lib/isc/x86_64/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 = include +TARGETS = + +@BIND9_MAKE_RULES@ diff --git a/lib/isc/x86_64/include/Makefile.in b/lib/isc/x86_64/include/Makefile.in new file mode 100644 index 0000000..d33c0fc --- /dev/null +++ b/lib/isc/x86_64/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/x86_64/include/isc/Makefile.in b/lib/isc/x86_64/include/isc/Makefile.in new file mode 100644 index 0000000..97b6b41 --- /dev/null +++ b/lib/isc/x86_64/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/x86_64/include/isc/atomic.h b/lib/isc/x86_64/include/isc/atomic.h new file mode 100644 index 0000000..b2d7880 --- /dev/null +++ b/lib/isc/x86_64/include/isc/atomic.h @@ -0,0 +1,139 @@ +/* + * 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> + +#ifdef ISC_PLATFORM_USEGCCASM + +/* We share the gcc-version with x86_32 */ +#error "impossible case. check build configuration" + +#elif defined(ISC_PLATFORM_USESTDASM) +/* + * The followings are "generic" assembly code which implements the same + * functionality in case the gcc extension cannot be used. It should be + * better to avoid inlining below, since we directly refer to specific + * registers for arguments, which would not actually correspond to the + * intended address or value in the embedded mnemonic. + */ + +static int32_t +isc_atomic_xadd(int32_t *p, int32_t val) { + (void)(p); + (void)(val); + + __asm ( + "movq %rdi, %rdx\n" + "movl %esi, %eax\n" +#ifdef ISC_PLATFORM_USETHREADS + "lock;" +#endif + "xadd %eax, (%rdx)\n" + /* + * XXX: assume %eax will be used as the return value. + */ + ); +} + +#ifdef ISC_PLATFORM_HAVEXADDQ +static int64_t +isc_atomic_xaddq(int64_t *p, int64_t val) { + (void)(p); + (void)(val); + + __asm ( + "movq %rdi, %rdx\n" + "movq %rsi, %rax\n" +#ifdef ISC_PLATFORM_USETHREADS + "lock;" +#endif + "xaddq %rax, (%rdx)\n" + /* + * XXX: assume %rax will be used as the return value. + */ + ); +} +#endif + +static void +isc_atomic_store(int32_t *p, int32_t val) { + (void)(p); + (void)(val); + + __asm ( + "movq %rdi, %rax\n" + "movl %esi, %edx\n" +#ifdef ISC_PLATFORM_USETHREADS + "lock;" +#endif + "xchgl (%rax), %edx\n" + ); +} + +#ifdef ISC_PLATFORM_HAVEATOMICSTOREQ +static void +isc_atomic_storeq(int64_t *p, int64_t val) { + (void)(p); + (void)(val); + + __asm ( + "movq %rdi, %rax\n" + "movq %rsi, %rdx\n" +#ifdef ISC_PLATFORM_USETHREADS + "lock;" +#endif + "xchgq (%rax), %rdx\n" + ); +} +#endif + +static int32_t +isc_atomic_cmpxchg(int32_t *p, int32_t cmpval, int32_t val) { + (void)(p); + (void)(cmpval); + (void)(val); + + __asm ( + /* + * p is %rdi, cmpval is %esi, val is %edx. + */ + "movl %edx, %ecx\n" + "movl %esi, %eax\n" + "movq %rdi, %rdx\n" + +#ifdef ISC_PLATFORM_USETHREADS + "lock;" +#endif + /* + * If [%rdi] == %eax then [%rdi] := %ecx (equal to %edx + * from above), and %eax is untouched (equal to %esi) + * from above. + * + * Else if [%rdi] != %eax then [%rdi] := [%rdi] + * (rewritten in write cycle) and %eax := [%rdi]. + */ + "cmpxchgl %ecx, (%rdx)" + ); +} + +#else /* !ISC_PLATFORM_USEGCCASM && !ISC_PLATFORM_USESTDASM */ + +#error "unsupported compiler. disable atomic ops by --disable-atomic" + +#endif +#endif /* ISC_ATOMIC_H */ |