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authorjsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>2015-11-18 22:13:44 +0000
committerjsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4>2015-11-18 22:13:44 +0000
commitcd404a14a1515ecd35ab368fe02df305d15656aa (patch)
tree08274b8bbbefd907bbf6dbb3658d87467546b2a9 /libatomic
parent51f32d1f3585e26b92fc0203128f0936ea7ca932 (diff)
downloadgcc-cd404a14a1515ecd35ab368fe02df305d15656aa.tar.gz
Add out-of-line versions of some <stdatomic.h> functions (PR c/65083).
PR c/65083 notes that some functions in <stdatomic.h> are normal functions, not generic functions, and so need to have out-of-line copies that can be called when macro expansion is suppressed (unlike the generic functions where DR#419 makes it undefined if you suppress a macro expansion). This patch adds such out-of-line definitions in libatomic for those six functions, at a new LIBATOMIC_1.2 symbol version, as trivial wrappers to the <stdatomic.h> macros, along with declarations of those functions in <stdatomic.h>. Tests are added that are based on the corresponding tests for the macros, but with parentheses around the function names to force the out-of-line functions to be used. Bootstrapped with no regressions on x86_64-pc-linux-gnu. gcc: * ginclude/stdatomic.h (atomic_thread_fence, atomic_signal_fence) (atomic_flag_test_and_set, atomic_flag_test_and_set_explicit) (atomic_flag_clear, atomic_flag_clear_explicit): Declare as functions before defining as macros. gcc/testsuite: * gcc.dg/atomic/stdatomic-fence-2.c, gcc.dg/atomic/stdatomic-flag-2.c: New tests. libatomic: * fence.c, flag.c: New files. * Makefile.am (libatomic_la_SOURCES): Add fence.c and flag.c. * Makefile.in: Regenerate. * configure.ac (libtool_VERSION): Change to 3:0:2. * configure: Regenerate. * libatomic.map (LIBATOMIC_1.2): New symbol version. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230578 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libatomic')
-rw-r--r--libatomic/ChangeLog10
-rw-r--r--libatomic/Makefile.am2
-rw-r--r--libatomic/Makefile.in8
-rwxr-xr-xlibatomic/configure2
-rw-r--r--libatomic/configure.ac2
-rw-r--r--libatomic/fence.c45
-rw-r--r--libatomic/flag.c64
-rw-r--r--libatomic/libatomic.map9
8 files changed, 136 insertions, 6 deletions
diff --git a/libatomic/ChangeLog b/libatomic/ChangeLog
index 9ca15c2cc65..fadb79f1af4 100644
--- a/libatomic/ChangeLog
+++ b/libatomic/ChangeLog
@@ -1,3 +1,13 @@
+2015-11-18 Joseph Myers <joseph@codesourcery.com>
+
+ PR c/65083
+ * fence.c, flag.c: New files.
+ * Makefile.am (libatomic_la_SOURCES): Add fence.c and flag.c.
+ * Makefile.in: Regenerate.
+ * configure.ac (libtool_VERSION): Change to 3:0:2.
+ * configure: Regenerate.
+ * libatomic.map (LIBATOMIC_1.2): New symbol version.
+
2015-10-09 David Malcolm <dmalcolm@redhat.com>
* testsuite/lib/libatomic.exp: Load multiline.exp before
diff --git a/libatomic/Makefile.am b/libatomic/Makefile.am
index 3d8ab62dc8f..bd0ab293131 100644
--- a/libatomic/Makefile.am
+++ b/libatomic/Makefile.am
@@ -68,7 +68,7 @@ libatomic_version_info = -version-info $(libtool_VERSION)
libatomic_la_LDFLAGS = $(libatomic_version_info) $(libatomic_version_script) $(lt_host_flags)
libatomic_la_SOURCES = gload.c gstore.c gcas.c gexch.c glfree.c lock.c init.c \
- fenv.c
+ fenv.c fence.c flag.c
SIZEOBJS = load store cas exch fadd fsub fand fior fxor fnand tas
SIZES = @SIZES@
diff --git a/libatomic/Makefile.in b/libatomic/Makefile.in
index 9288652d9f2..b696d554777 100644
--- a/libatomic/Makefile.in
+++ b/libatomic/Makefile.in
@@ -114,14 +114,14 @@ am__uninstall_files_from_dir = { \
am__installdirs = "$(DESTDIR)$(toolexeclibdir)"
LTLIBRARIES = $(noinst_LTLIBRARIES) $(toolexeclib_LTLIBRARIES)
am_libatomic_la_OBJECTS = gload.lo gstore.lo gcas.lo gexch.lo \
- glfree.lo lock.lo init.lo fenv.lo
+ glfree.lo lock.lo init.lo fenv.lo fence.lo flag.lo
libatomic_la_OBJECTS = $(am_libatomic_la_OBJECTS)
libatomic_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
$(libatomic_la_LDFLAGS) $(LDFLAGS) -o $@
libatomic_convenience_la_DEPENDENCIES = $(libatomic_la_LIBADD)
am__objects_1 = gload.lo gstore.lo gcas.lo gexch.lo glfree.lo lock.lo \
- init.lo fenv.lo
+ init.lo fenv.lo fence.lo flag.lo
am_libatomic_convenience_la_OBJECTS = $(am__objects_1)
libatomic_convenience_la_OBJECTS = \
$(am_libatomic_convenience_la_OBJECTS)
@@ -317,7 +317,7 @@ noinst_LTLIBRARIES = libatomic_convenience.la
libatomic_version_info = -version-info $(libtool_VERSION)
libatomic_la_LDFLAGS = $(libatomic_version_info) $(libatomic_version_script) $(lt_host_flags)
libatomic_la_SOURCES = gload.c gstore.c gcas.c gexch.c glfree.c lock.c init.c \
- fenv.c
+ fenv.c fence.c flag.c
SIZEOBJS = load store cas exch fadd fsub fand fior fxor fnand tas
EXTRA_libatomic_la_SOURCES = $(addsuffix _n.c,$(SIZEOBJS))
@@ -456,7 +456,9 @@ mostlyclean-compile:
distclean-compile:
-rm -f *.tab.c
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fence.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/fenv.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/flag.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gcas.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gexch.Plo@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/glfree.Plo@am__quote@
diff --git a/libatomic/configure b/libatomic/configure
index 3623c09c13a..8526abff90f 100755
--- a/libatomic/configure
+++ b/libatomic/configure
@@ -11503,7 +11503,7 @@ fi
# For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=2:0:1
+libtool_VERSION=3:0:2
# Check for used threading-model
diff --git a/libatomic/configure.ac b/libatomic/configure.ac
index d5e67c851d2..bdbf825e0cb 100644
--- a/libatomic/configure.ac
+++ b/libatomic/configure.ac
@@ -149,7 +149,7 @@ AC_SUBST(enable_static)
AM_MAINTAINER_MODE
# For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=2:0:1
+libtool_VERSION=3:0:2
AC_SUBST(libtool_VERSION)
# Check for used threading-model
diff --git a/libatomic/fence.c b/libatomic/fence.c
new file mode 100644
index 00000000000..a4152f1a469
--- /dev/null
+++ b/libatomic/fence.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 2015 Free Software Foundation, Inc.
+
+ This file is part of the GNU Atomic Library (libatomic).
+
+ Libatomic is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "libatomic_i.h"
+
+#include <stdatomic.h>
+
+/* Out-of-line versions of <stdatomic.h> fence functions. */
+
+/* Fence as specified by ORDER. */
+
+void
+(atomic_thread_fence) (memory_order order)
+{
+ atomic_thread_fence (order);
+}
+
+/* Fence as specified by ORDER but only establishing ordering between
+ a thread and a signal handler executed in that thread. */
+
+void
+(atomic_signal_fence) (memory_order order)
+{
+ atomic_signal_fence (order);
+}
diff --git a/libatomic/flag.c b/libatomic/flag.c
new file mode 100644
index 00000000000..bc8cc14a6c3
--- /dev/null
+++ b/libatomic/flag.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 2015 Free Software Foundation, Inc.
+
+ This file is part of the GNU Atomic Library (libatomic).
+
+ Libatomic is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include "libatomic_i.h"
+
+#include <stdatomic.h>
+
+/* Out-of-line versions of <stdatomic.h> flag functions. */
+
+/* Atomically set *OBJECT to true, returning the previous value. */
+
+_Bool
+(atomic_flag_test_and_set) (volatile atomic_flag *object)
+{
+ return atomic_flag_test_and_set (object);
+}
+
+/* Atomically set *OBJECT to true, returning the previous value, with
+ memory affected according to ORDER. */
+
+_Bool
+(atomic_flag_test_and_set_explicit) (volatile atomic_flag *object,
+ memory_order order)
+{
+ return atomic_flag_test_and_set_explicit (object, order);
+}
+
+/* Atomically set *OBJECT to false. */
+
+void
+(atomic_flag_clear) (volatile atomic_flag *object)
+{
+ atomic_flag_clear (object);
+}
+
+/* Atomically set *OBJECT to false, with memory affected according to
+ ORDER. */
+
+void
+(atomic_flag_clear_explicit) (volatile atomic_flag *object,
+ memory_order order)
+{
+ return atomic_flag_clear_explicit (object, order);
+}
diff --git a/libatomic/libatomic.map b/libatomic/libatomic.map
index 8fd2bafd80c..39e7c2c6b9a 100644
--- a/libatomic/libatomic.map
+++ b/libatomic/libatomic.map
@@ -99,3 +99,12 @@ LIBATOMIC_1.1 {
global:
__atomic_feraiseexcept;
} LIBATOMIC_1.0;
+LIBATOMIC_1.2 {
+ global:
+ atomic_thread_fence;
+ atomic_signal_fence;
+ atomic_flag_test_and_set;
+ atomic_flag_test_and_set_explicit;
+ atomic_flag_clear;
+ atomic_flag_clear_explicit;
+} LIBATOMIC_1.1;