Move gdb_regex* to common/

Later patches need regex support also in gdbserver.

gdb/ChangeLog
2015-07-15  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* Makefile.in (HFILES_NO_SRCDIR): Change gdb_regex.h to
	common/gdb_regex.h.
	(COMMON_OBS): Add gdb_regex.o.
	(gdb_regex.o): New.
	* common/common.m4 (GDB_AC_COMMON): Add gdb_use_included_regex,
	--without-included-regex and USE_INCLUDED_REGEX.
	* common/gdb_regex.c: New file from utils.c functions.
	* common/gdb_regex.h: Move it here from gdb_regex.h, update include
	file wrapping define name.
	* configure: Rebuilt.
	* configure.ac (gdb_use_included_regex, --without-included-regex)
	(USE_INCLUDED_REGEX): Move them to common/common.m4.
	* gdb_regex.h: Move it to common/gdb_regex.h.
	* utils.c: Remove include gdb_regex.h.
	(do_regfree_cleanup, make_regfree_cleanup, get_regcomp_error)
	(compile_rx_or_error): Move them to common/gdb_regex.c.

gdb/gdbserver/ChangeLog
2015-07-15  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* Makefile.in (OBS): Add gdb_regex.o.
	(gdb_regex.o): New.
	* config.in: Rebuilt.
	* configure: Rebuilt.

12 files changed, 251 insertions, 140 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1a5a209..b87a901 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,22 @@
+2015-07-15  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* Makefile.in (HFILES_NO_SRCDIR): Change gdb_regex.h to
+	common/gdb_regex.h.
+	(COMMON_OBS): Add gdb_regex.o.
+	(gdb_regex.o): New.
+	* common/common.m4 (GDB_AC_COMMON): Add gdb_use_included_regex,
+	--without-included-regex and USE_INCLUDED_REGEX.
+	* common/gdb_regex.c: New file from utils.c functions.
+	* common/gdb_regex.h: Move it here from gdb_regex.h, update include
+	file wrapping define name.
+	* configure: Rebuilt.
+	* configure.ac (gdb_use_included_regex, --without-included-regex)
+	(USE_INCLUDED_REGEX): Move them to common/common.m4.
+	* gdb_regex.h: Move it to common/gdb_regex.h.
+	* utils.c: Remove include gdb_regex.h.
+	(do_regfree_cleanup, make_regfree_cleanup, get_regcomp_error)
+	(compile_rx_or_error): Move them to common/gdb_regex.c.
+
 2015-07-15  Aleksandar Ristovski  <aristovski@qnx.com
 	    Jan Kratochvil  <jan.kratochvil@redhat.com>
 
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 237da9d..ea9e804 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -937,7 +937,7 @@ extension.h extension-priv.h \
 build-id.h buildsym.h valprint.h \
 typeprint.h mi/mi-getopt.h mi/mi-parse.h mi/mi-console.h \
 mi/mi-out.h mi/mi-main.h mi/mi-common.h mi/mi-cmds.h linux-nat.h \
-complaints.h gdb_proc_service.h gdb_regex.h xtensa-tdep.h inf-loop.h \
+complaints.h gdb_proc_service.h common/gdb_regex.h xtensa-tdep.h inf-loop.h \
 common/gdb_wait.h common/gdb_assert.h solib.h ppc-tdep.h cp-support.h glibc-tdep.h \
 interps.h auxv.h gdbcmd.h tramp-frame.h mipsnbsd-tdep.h	\
 amd64-linux-tdep.h linespec.h i387-tdep.h mn10300-tdep.h \
@@ -1084,6 +1084,7 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $(YYOBJ) \
 	format.o registry.o btrace.o record-btrace.o waitstatus.o \
 	print-utils.o rsp-low.o errors.o common-debug.o debug.o \
 	common-exceptions.o btrace-common.o fileio.o target-utils.o \
+	gdb_regex.o \
 	$(SUBDIR_GCC_COMPILE_OBS)
 
 TSOBS = inflow.o
@@ -2272,6 +2273,10 @@ btrace-common.o: ${srcdir}/common/btrace-common.c
 fileio.o: ${srcdir}/common/fileio.c
 	$(COMPILE) $(srcdir)/common/fileio.c
 	$(POSTCOMPILE)
+
+gdb_regex.o: ${srcdir}/common/gdb_regex.c
+	$(COMPILE) $(srcdir)/common/gdb_regex.c
+	$(POSTCOMPILE)
 #
 # gdb/target/ dependencies
 #
diff --git a/gdb/common/common.m4 b/gdb/common/common.m4
index a87579a..e48dd5a 100644
--- a/gdb/common/common.m4
+++ b/gdb/common/common.m4
@@ -44,4 +44,33 @@ gdb_cv_func_sigsetjmp=yes, gdb_cv_func_sigsetjmp=no)])
 if test $gdb_cv_func_sigsetjmp = yes; then
   AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available. ])
 fi
+
+  # Assume we'll default to using the included libiberty regex.
+  gdb_use_included_regex=yes
+
+  # However, if the system regex is GNU regex, then default to *not*
+  # using the included regex.
+  AC_CACHE_CHECK(
+    [for GNU regex],
+    [gdb_cv_have_gnu_regex],
+    [AC_TRY_COMPILE(
+      [#include <gnu-versions.h>],
+      [#define REGEX_INTERFACE_VERSION 1
+  #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
+  # error "Version mismatch"
+  #endif],
+      gdb_cv_have_gnu_regex=yes,
+      gdb_cv_have_gnu_regex=no)])
+  if test $gdb_cv_have_gnu_regex = yes; then
+    gdb_use_included_regex=no
+  fi
+
+  AC_ARG_WITH(included-regex,
+    AS_HELP_STRING([--without-included-regex], [don't use included regex; this is the default on systems with version 2 of the GNU C library (use with caution on other system)]),
+    gdb_with_regex=$withval,
+    gdb_with_regex=$gdb_use_included_regex)
+  if test "$gdb_with_regex" = yes; then
+    AC_DEFINE(USE_INCLUDED_REGEX, 1,
+      [Define to 1 if the regex included in libiberty should be used.])
+  fi
 ])
diff --git a/gdb/common/gdb_regex.c b/gdb/common/gdb_regex.c
new file mode 100644
index 0000000..73f30a7
--- /dev/null
+++ b/gdb/common/gdb_regex.c
@@ -0,0 +1,73 @@
+/* Shared utility routines for GDB to interact with agent.
+
+   Copyright (C) 2009-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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.
+
+   This program 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.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "common-defs.h"
+#include "gdb_regex.h"
+
+/* A cleanup function that calls regfree.  */
+
+static void
+do_regfree_cleanup (void *r)
+{
+  regfree (r);
+}
+
+/* Create a new cleanup that frees the compiled regular expression R.  */
+
+struct cleanup *
+make_regfree_cleanup (regex_t *r)
+{
+  return make_cleanup (do_regfree_cleanup, r);
+}
+
+/* Return an xmalloc'd error message resulting from a regular
+   expression compilation failure.  */
+
+char *
+get_regcomp_error (int code, regex_t *rx)
+{
+  size_t length = regerror (code, rx, NULL, 0);
+  char *result = xmalloc (length);
+
+  regerror (code, rx, result, length);
+  return result;
+}
+
+/* Compile a regexp and throw an exception on error.  This returns a
+   cleanup to free the resulting pattern on success.  RX must not be
+   NULL.  */
+
+struct cleanup *
+compile_rx_or_error (regex_t *pattern, const char *rx, const char *message)
+{
+  int code;
+
+  gdb_assert (rx != NULL);
+
+  code = regcomp (pattern, rx, REG_NOSUB);
+  if (code != 0)
+    {
+      char *err = get_regcomp_error (code, pattern);
+
+      make_cleanup (xfree, err);
+      error (("%s: %s"), message, err);
+    }
+
+  return make_regfree_cleanup (pattern);
+}
diff --git a/gdb/gdb_regex.h b/gdb/common/gdb_regex.h
index 3173a54..c6eb67b 100644
--- a/gdb/gdb_regex.h
+++ b/gdb/common/gdb_regex.h
@@ -16,8 +16,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef GDB_REGEX_H
-#define GDB_REGEX_H 1
+#ifndef COMMON_GDB_REGEX_H
+#define COMMON_GDB_REGEX_H 1
 
 #ifdef USE_INCLUDED_REGEX
 # include "xregex.h"
@@ -27,10 +27,9 @@
 # include <regex.h>
 #endif
 
-/* From utils.c.  */
 struct cleanup *make_regfree_cleanup (regex_t *);
 char *get_regcomp_error (int, regex_t *);
 struct cleanup *compile_rx_or_error (regex_t *pattern, const char *rx,
 				     const char *message);
 
-#endif /* not GDB_REGEX_H */
+#endif /* not COMMON_GDB_REGEX_H */
diff --git a/gdb/configure b/gdb/configure
index e8979f0..027ecf4 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -11925,6 +11925,57 @@ $as_echo "#define HAVE_SIGSETJMP 1" >>confdefs.h
 
 fi
 
+  # Assume we'll default to using the included libiberty regex.
+  gdb_use_included_regex=yes
+
+  # However, if the system regex is GNU regex, then default to *not*
+  # using the included regex.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU regex" >&5
+$as_echo_n "checking for GNU regex... " >&6; }
+if test "${gdb_cv_have_gnu_regex+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <gnu-versions.h>
+int
+main ()
+{
+#define REGEX_INTERFACE_VERSION 1
+  #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
+  # error "Version mismatch"
+  #endif
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  gdb_cv_have_gnu_regex=yes
+else
+  gdb_cv_have_gnu_regex=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_gnu_regex" >&5
+$as_echo "$gdb_cv_have_gnu_regex" >&6; }
+  if test $gdb_cv_have_gnu_regex = yes; then
+    gdb_use_included_regex=no
+  fi
+
+
+# Check whether --with-included-regex was given.
+if test "${with_included_regex+set}" = set; then :
+  withval=$with_included_regex; gdb_with_regex=$withval
+else
+  gdb_with_regex=$gdb_use_included_regex
+fi
+
+  if test "$gdb_with_regex" = yes; then
+
+$as_echo "#define USE_INCLUDED_REGEX 1" >>confdefs.h
+
+  fi
+
 
 # Check the return and argument types of ptrace.  No canned test for
 # this, so roll our own.
@@ -12187,57 +12238,6 @@ if test $ac_cv_func_setpgrp_void = yes; then
 fi
 fi
 
-# Assume we'll default to using the included libiberty regex.
-gdb_use_included_regex=yes
-
-# However, if the system regex is GNU regex, then default to *not*
-# using the included regex.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU regex" >&5
-$as_echo_n "checking for GNU regex... " >&6; }
-if test "${gdb_cv_have_gnu_regex+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <gnu-versions.h>
-int
-main ()
-{
-#define REGEX_INTERFACE_VERSION 1
-#if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
-# error "Version mismatch"
-#endif
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  gdb_cv_have_gnu_regex=yes
-else
-  gdb_cv_have_gnu_regex=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_gnu_regex" >&5
-$as_echo "$gdb_cv_have_gnu_regex" >&6; }
-if test $gdb_cv_have_gnu_regex = yes; then
-  gdb_use_included_regex=no
-fi
-
-
-# Check whether --with-included-regex was given.
-if test "${with_included_regex+set}" = set; then :
-  withval=$with_included_regex; gdb_with_regex=$withval
-else
-  gdb_with_regex=$gdb_use_included_regex
-fi
-
-if test "$gdb_with_regex" = yes; then
-
-$as_echo "#define USE_INCLUDED_REGEX 1" >>confdefs.h
-
-fi
-
 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
 ac_fn_c_check_member "$LINENO" "struct thread" "td_pcb" "ac_cv_member_struct_thread_td_pcb" "#include <sys/param.h>
 #include <sys/proc.h>
diff --git a/gdb/configure.ac b/gdb/configure.ac
index a40860a..6a7e0c9 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1444,35 +1444,6 @@ if test $ac_cv_func_setpgrp_void = yes; then
 fi
 fi
 
-# Assume we'll default to using the included libiberty regex.
-gdb_use_included_regex=yes
-
-# However, if the system regex is GNU regex, then default to *not*
-# using the included regex.
-AC_CACHE_CHECK(
-  [for GNU regex],
-  [gdb_cv_have_gnu_regex],
-  [AC_TRY_COMPILE(
-    [#include <gnu-versions.h>],
-    [#define REGEX_INTERFACE_VERSION 1
-#if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
-# error "Version mismatch"
-#endif],
-    gdb_cv_have_gnu_regex=yes,
-    gdb_cv_have_gnu_regex=no)])
-if test $gdb_cv_have_gnu_regex = yes; then
-  gdb_use_included_regex=no
-fi
-
-AC_ARG_WITH(included-regex,
-  AS_HELP_STRING([--without-included-regex], [don't use included regex; this is the default on systems with version 2 of the GNU C library (use with caution on other system)]),
-  gdb_with_regex=$withval,
-  gdb_with_regex=$gdb_use_included_regex)
-if test "$gdb_with_regex" = yes; then
-  AC_DEFINE(USE_INCLUDED_REGEX, 1,
-    [Define to 1 if the regex included in libiberty should be used.])
-fi
-
 # Check if <sys/proc.h> defines `struct thread' with a td_pcb member.
 AC_CHECK_MEMBERS([struct thread.td_pcb], [], [],
 [#include <sys/param.h>
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 0ce30b7..e269b97 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,10 @@
+2015-07-15  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* Makefile.in (OBS): Add gdb_regex.o.
+	(gdb_regex.o): New.
+	* config.in: Rebuilt.
+	* configure: Rebuilt.
+
 2015-07-15  Aleksandar Ristovski  <aristovski@qnx.com
 	    Jan Kratochvil  <jan.kratochvil@redhat.com>
 
diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in
index 908061a..fea8e1b 100644
--- a/gdb/gdbserver/Makefile.in
+++ b/gdb/gdbserver/Makefile.in
@@ -195,6 +195,7 @@ OBS = agent.o ax.o inferiors.o regcache.o remote-utils.o server.o signals.o \
       common-utils.o ptid.o buffer.o format.o filestuff.o dll.o notif.o \
       tdesc.o print-utils.o rsp-low.o errors.o common-debug.o cleanups.o \
       common-exceptions.o symbol.o btrace-common.o fileio.o target-utils.o \
+      gdb_regex.o \
       $(XML_BUILTIN) $(DEPFILES) $(LIBOBJS)
 GDBREPLAY_OBS = gdbreplay.o version.o
 GDBSERVER_LIBS = @GDBSERVER_LIBS@
@@ -582,6 +583,9 @@ waitstatus.o: ../target/waitstatus.c
 fileio.o: ../common/fileio.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
+gdb_regex.o: ../common/gdb_regex.c
+	$(COMPILE) $<
+	$(POSTCOMPILE)
 
 # Native object files rules from ../nat
 
diff --git a/gdb/gdbserver/config.in b/gdb/gdbserver/config.in
index f24e6bb..90ea95d 100644
--- a/gdb/gdbserver/config.in
+++ b/gdb/gdbserver/config.in
@@ -317,6 +317,9 @@
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
+/* Define to 1 if the regex included in libiberty should be used. */
+#undef USE_INCLUDED_REGEX
+
 /* Define if we should use libthread_db directly. */
 #undef USE_LIBTHREAD_DB_DIRECTLY
 
diff --git a/gdb/gdbserver/configure b/gdb/gdbserver/configure
index e8cf136..c7ae6be 100755
--- a/gdb/gdbserver/configure
+++ b/gdb/gdbserver/configure
@@ -694,6 +694,7 @@ enable_maintainer_mode
 enable_largefile
 enable_build_with_cxx
 enable_libmcheck
+with_included_regex
 with_ust
 with_ust_include
 with_ust_lib
@@ -1345,6 +1346,10 @@ Optional Features:
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --without-included-regex
+                          don't use included regex; this is the default on
+                          systems with version 2 of the GNU C library (use
+                          with caution on other system)
   --with-ust=PATH       Specify prefix directory for the installed UST package
                           Equivalent to --with-ust-include=PATH/include
                           plus --with-ust-lib=PATH/lib
@@ -5747,6 +5752,57 @@ $as_echo "#define HAVE_SIGSETJMP 1" >>confdefs.h
 
 fi
 
+  # Assume we'll default to using the included libiberty regex.
+  gdb_use_included_regex=yes
+
+  # However, if the system regex is GNU regex, then default to *not*
+  # using the included regex.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU regex" >&5
+$as_echo_n "checking for GNU regex... " >&6; }
+if test "${gdb_cv_have_gnu_regex+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <gnu-versions.h>
+int
+main ()
+{
+#define REGEX_INTERFACE_VERSION 1
+  #if _GNU_REGEX_INTERFACE_VERSION != REGEX_INTERFACE_VERSION
+  # error "Version mismatch"
+  #endif
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  gdb_cv_have_gnu_regex=yes
+else
+  gdb_cv_have_gnu_regex=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gdb_cv_have_gnu_regex" >&5
+$as_echo "$gdb_cv_have_gnu_regex" >&6; }
+  if test $gdb_cv_have_gnu_regex = yes; then
+    gdb_use_included_regex=no
+  fi
+
+
+# Check whether --with-included-regex was given.
+if test "${with_included_regex+set}" = set; then :
+  withval=$with_included_regex; gdb_with_regex=$withval
+else
+  gdb_with_regex=$gdb_use_included_regex
+fi
+
+  if test "$gdb_with_regex" = yes; then
+
+$as_echo "#define USE_INCLUDED_REGEX 1" >>confdefs.h
+
+  fi
+
 
 # Check for UST
 ustlibs=""
diff --git a/gdb/utils.c b/gdb/utils.c
index acb4c7d..a2c2710 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -67,7 +67,6 @@
 
 #include "gdb_usleep.h"
 #include "interps.h"
-#include "gdb_regex.h"
 
 #if !HAVE_DECL_MALLOC
 extern PTR malloc ();		/* ARI: PTR */
@@ -1114,60 +1113,6 @@ make_hex_string (const gdb_byte *data, size_t length)
 
 
 
-/* A cleanup function that calls regfree.  */
-
-static void
-do_regfree_cleanup (void *r)
-{
-  regfree (r);
-}
-
-/* Create a new cleanup that frees the compiled regular expression R.  */
-
-struct cleanup *
-make_regfree_cleanup (regex_t *r)
-{
-  return make_cleanup (do_regfree_cleanup, r);
-}
-
-/* Return an xmalloc'd error message resulting from a regular
-   expression compilation failure.  */
-
-char *
-get_regcomp_error (int code, regex_t *rx)
-{
-  size_t length = regerror (code, rx, NULL, 0);
-  char *result = xmalloc (length);
-
-  regerror (code, rx, result, length);
-  return result;
-}
-
-/* Compile a regexp and throw an exception on error.  This returns a
-   cleanup to free the resulting pattern on success.  RX must not be
-   NULL.  */
-
-struct cleanup *
-compile_rx_or_error (regex_t *pattern, const char *rx, const char *message)
-{
-  int code;
-
-  gdb_assert (rx != NULL);
-
-  code = regcomp (pattern, rx, REG_NOSUB);
-  if (code != 0)
-    {
-      char *err = get_regcomp_error (code, pattern);
-
-      make_cleanup (xfree, err);
-      error (("%s: %s"), message, err);
-    }
-
-  return make_regfree_cleanup (pattern);
-}
-
-
-
 /* This function supports the query, nquery, and yquery functions.
    Ask user a y-or-n question and return 0 if answer is no, 1 if
    answer is yes, or default the answer to the specified default