Implement catch syscall group

Implement support to add catchpoints for a group of related syscalls
using the syntax:

(gdb) catch syscall group:<group>
or
(gdb) catch syscall g:<group>

Several groups are predefined in the xml files for all architectures
supported by GDB over Linux.  They are based on the groups defined by
strace.

gdb/

	* xml-syscall.c (get_syscalls_by_group): New.
	(get_syscall_group_names): New.
	(struct syscall_group_desc): New structure to store group data.
	(struct syscalls_info): Include field to store the group list.
	(sysinfo_free_syscall_group_desc): New.
	(free_syscalls_info): Free group list.
	(syscall_group_create_syscall_group_desc): New.
	(syscall_group_add_syscall): New.
	(syscall_create_syscall_desc): Add syscall to its groups.
	(syscall_start_syscall): Load group attribute.
	(syscall_group_get_group_by_name): New.
	(xml_list_syscalls_by_group): New.
	(xml_list_of_groups): New.
	* xml-syscall.h (get_syscalls_by_group): Export function
	to retrieve a list of syscalls filtered by the group name.
	(get_syscall_group_names): Export function to retrieve the list
	of syscall groups.
	* break-catch-syscall.c (catch_syscall_split_args): Verify if
	argument is a syscall group and expand it to a list of syscalls
	when creating catchpoints.
	(catch_syscall_completer): Add word completion for system call
	groups.
	* configure.ac: Include dependency for xsltproc when building
	in maintainer-mode.
	* break-catch-syscall.c (_initialize_breakpoint): Update catch
	syscall command documentation.
	* NEWS: Include section about catching groups of syscalls.
	* configure: Regenerate.
	* data-directory/Makefile.in: Generate syscall xml when building
	in maintainer mode.
	* syscalls/gdb-syscalls.dtd: Include group attribute to the
	syscall element.
	* syscalls/apply-defaults.xsl: New.
	* syscalls/linux-defaults.xml.in: New.
	* syscalls/aarch64-linux.xml: Rename to aarch64-linux.xml.in.
	* syscalls/amd64-linux.xml: Rename to amd64-linux.xml.in.
	* syscalls/arm-linux.xml: Rename to arm-linux.xml.in.
	* syscalls/bfin-linux.xml: Rename to bfin-linux.xml.in.
	* syscalls/i386-linux.xml: Rename to i386-linux.xml.in.
	* syscalls/mips-n32-linux.xml: Rename to mips-n32-linux.xml.in.
	* syscalls/mips-n64-linux.xml: Rename to mips-n64-linux.xml.in.
	* syscalls/mips-o32-linux.xml: Rename to mips-o32-linux.xml.in.
	* syscalls/ppc-linux.xml: Rename to ppc-linux.xml.in.
	* syscalls/ppc64-linux.xml: Rename to ppc64-linux.xml.in.
	* syscalls/s390-linux.xml: Rename to s390-linux.xml.in.
	* syscalls/s390x-linux.xml: Rename to s390x-linux.xml.in.
	* syscalls/sparc-linux.xml: Rename to sparc-linux.xml.in.
	* syscalls/sparc64-linux.xml: Rename to sparc64-linux.xml.in.
	* syscalls/aarch64-linux.xml: Regenerate.
	* syscalls/amd64-linux.xml: Regenerate.
	* syscalls/arm-linux.xml: Regenerate.
	* syscalls/i386-linux.xml: Regenerate.
	* syscalls/mips-n32-linux.xml: Regenerate.
	* syscalls/mips-n64-linux.xml: Regenerate.
	* syscalls/mips-o32-linux.xml: Regenerate.
	* syscalls/ppc-linux.xml: Regenerate.
	* syscalls/ppc64-linux.xml: Regenerate.
	* syscalls/s390-linux.xml: Regenerate.
	* syscalls/s390x-linux.xml: Regenerate.
	* syscalls/sparc-linux.xml: Regenerate.
	* syscalls/sparc64-linux.xml: Regenerate.

gdb/testsuite/

	* gdb.base/catch-syscall.exp (do_syscall_tests): Add call
	to test_catch_syscall_group.
	(test_catch_syscall_group): New.

gdb/doc/

	* gdb.texinfo (Set Catchpoints): Add 'group' argument to catch
	syscall.

1 files changed, 43 insertions, 0 deletions

diff --git a/gdb/syscalls/apply-defaults.xsl b/gdb/syscalls/apply-defaults.xsl
new file mode 100644
index 0000000..5ab2b67
--- /dev/null
+++ b/gdb/syscalls/apply-defaults.xsl
@@ -0,0 +1,43 @@
+<!-- Generate syscall XML files based on defaults template.
+     Copyright (C) 2016 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/>. -->
+
+<xsl:stylesheet version="1.0"
+		xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:output method="xml" doctype-system="gdb-syscalls.dtd"/>
+
+  <xsl:template match="node()|@*" name="identity">
+    <xsl:copy>
+      <xsl:apply-templates select="node()|@*"/>
+    </xsl:copy>
+  </xsl:template>
+
+  <xsl:template match="/syscalls_info/syscall">
+    <xsl:copy>
+      <xsl:apply-templates select="@*|node()"/>
+      <xsl:variable name="syscall"><xsl:value-of select="@name"/></xsl:variable>
+      <xsl:variable name="tgroups"><xsl:value-of select="@groups"/></xsl:variable>
+      <xsl:for-each select="document('linux-defaults.xml.in')/syscalls_defaults/child::*[@name=$syscall]">
+	<xsl:attribute name="groups">
+	  <xsl:value-of select="@groups"/>
+	  <xsl:if test="$tgroups != '' ">,<xsl:value-of select="$tgroups"/></xsl:if>
+	</xsl:attribute>
+      </xsl:for-each>
+    </xsl:copy>
+  </xsl:template>
+
+</xsl:stylesheet>