Introduce gcov.h header file (PR gcov-profile/80435).

2017-04-19  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/80435
	* Makefile.in: Install gcov.h.
	* gcov.h: New file.
	* libgcov.h: Use the header and make __gcov_flush publicly
	visible.

From-SVN: r246990

libgcc/ChangeLog

@@ -1,3 +1,11 @@
+2017-04-19  Martin Liska  <mliska@suse.cz>
+
+	PR gcov-profile/80435
+	* Makefile.in: Install gcov.h.
+	* gcov.h: New file.
+	* libgcov.h: Use the header and make __gcov_flush publicly
+	visible.
+
 2017-04-18  Martin Liska  <mliska@suse.cz>
 
 	PR gcov-profile/78783

libgcc/Makefile.in

@@ -907,14 +907,14 @@ libgcov-driver-objects = $(patsubst %,%$(objext),$(LIBGCOV_DRIVER))
 libgcov-objects = $(libgcov-merge-objects) $(libgcov-profiler-objects) \
                  $(libgcov-interface-objects) $(libgcov-driver-objects)
 
-$(libgcov-merge-objects): %$(objext): $(srcdir)/libgcov-merge.c $(srcdir)/libgcov.h
+$(libgcov-merge-objects): %$(objext): $(srcdir)/libgcov-merge.c $(srcdir)/gcov.h $(srcdir)/libgcov.h
 	$(gcc_compile) -DL$* -c $(srcdir)/libgcov-merge.c
-$(libgcov-profiler-objects): %$(objext): $(srcdir)/libgcov-profiler.c $(srcdir)/libgcov.h
+$(libgcov-profiler-objects): %$(objext): $(srcdir)/libgcov-profiler.c $(srcdir)/gcov.h $(srcdir)/libgcov.h
 	$(gcc_compile) -DL$* -c $(srcdir)/libgcov-profiler.c
-$(libgcov-interface-objects): %$(objext): $(srcdir)/libgcov-interface.c $(srcdir)/libgcov.h
+$(libgcov-interface-objects): %$(objext): $(srcdir)/libgcov-interface.c $(srcdir)/gcov.h $(srcdir)/libgcov.h
 	$(gcc_compile) -DL$* -c $(srcdir)/libgcov-interface.c
 $(libgcov-driver-objects): %$(objext): $(srcdir)/libgcov-driver.c \
-  $(srcdir)/libgcov-driver-system.c $(srcdir)/libgcov.h
+  $(srcdir)/libgcov-driver-system.c $(srcdir)/gcov.h $(srcdir)/libgcov.h
 	$(gcc_compile) -DL$* -c $(srcdir)/libgcov-driver.c
 
 
@@ -1114,6 +1114,10 @@ install-unwind_h:
 
 all: install-unwind_h-forbuild
 
+install-gcov_h:
+	$(mkinstalldirs) $(DESTDIR)$(libsubdir)/include
+	$(INSTALL_DATA) $(srcdir)/gcov.h $(DESTDIR)$(libsubdir)/include
+
 # Documentation targets (empty).
 .PHONY: info html dvi pdf install-info install-html install-pdf
 
@@ -1171,13 +1175,14 @@ install-leaf: $(install-shared) $(install-libunwind)
 	  esac;							\
 	done
 
-install: install-leaf install-unwind_h
+install: install-leaf install-unwind_h install-gcov_h
 	@: $(MAKE) ; $(MULTIDO) $(FLAGS_TO_PASS) multi-do DO=install
 
 install-strip: install
 
 .PHONY: install install-shared install-libunwind install-strip
 .PHONY: install-unwind_h install-unwind_h-forbuild
+.PHONY: install-gcov_h
 
 # Don't export variables to the environment, in order to not confuse
 # configure.

libgcc/gcov.h

@@ -0,0 +1,41 @@
+/* GCOV interface routines.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC 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, or (at your option) any later
+   version.
+
+   GCC 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/>.  */
+
+#ifndef GCC_GCOV_H
+#define GCC_GCOV_H
+
+/* Set all counters to zero.  */
+
+extern void __gcov_reset (void);
+
+/* Write profile information to a file.  */
+
+extern void __gcov_dump (void);
+
+/* Write profile information to a file and reset counters to zero.
+   The function does operations under a mutex.  */
+
+extern void __gcov_flush (void);
+
+#endif /* GCC_GCOV_H */

libgcc/libgcov.h

@@ -42,6 +42,7 @@
 #include "coretypes.h"
 #include "tm.h"
 #include "libgcc_tm.h"
+#include "gcov.h"
 
 #if __CHAR_BIT__ == 8
 typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI)));
@@ -237,16 +238,11 @@ extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN;
 /* GCOV exit function registered via a static destructor.  */
 extern void __gcov_exit (void) ATTRIBUTE_HIDDEN;
 
-/* Called before fork, to avoid double counting.  */
-extern void __gcov_flush (void) ATTRIBUTE_HIDDEN;
-
 /* Function to reset all counters to 0.  Both externally visible (and
    overridable) and internal version.  */
-extern void __gcov_reset (void);
 extern void __gcov_reset_int (void) ATTRIBUTE_HIDDEN;
 
 /* User function to enable early write of profile information so far.  */
-extern void __gcov_dump (void);
 extern void __gcov_dump_int (void) ATTRIBUTE_HIDDEN;
 
 /* The merge function that just sums the counters.  */