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, 39 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/catch-syscall.exp b/gdb/testsuite/gdb.base/catch-syscall.exp
index f3ab6cbfbb8..a739c46d02d 100644
--- a/gdb/testsuite/gdb.base/catch-syscall.exp
+++ b/gdb/testsuite/gdb.base/catch-syscall.exp
@@ -385,6 +385,42 @@ proc test_catch_syscall_fail_nodatadir {} {
     }
 }
 
+proc test_catch_syscall_group {} {
+    global decimal
+
+    set sysnum "\\\[${decimal}\\\]"
+
+    gdb_test "catch syscall g:process" \
+	"Catchpoint $decimal \\(syscalls (\'(clone|fork|execve|exit)\' $sysnum)+.*" \
+	"set catchpoint on a group of syscalls"
+
+    gdb_test "catch syscall group:process read" \
+	"Catchpoint $decimal \\(syscalls (\'(clone|fork|execve|exit)\' $sysnum)+.*read.*\\)" \
+	"set catchpoints on a group of syscalls and on a single syscall"
+
+    gdb_test "catch syscall group:" \
+	"Unknown syscall group ''\." \
+	"set catchpoints on an invalid group"
+
+    gdb_test "catch syscall g:junk" \
+	"Unknown syscall group 'junk'\." \
+	"set catchpoints on an unknown group."
+
+    gdb_test "complete catch syscall g:proc" \
+	"catch syscall g:process" \
+	"complete catch syscall group with 'g:' prefix"
+
+    gdb_test "complete catch syscall group:proc" \
+	"catch syscall group:process" \
+	"complete catch syscall group with 'group:' prefix"
+
+    gdb_test_sequence "complete catch syscall g" \
+	"complete catch syscall group suggests 'group:' prefix" {
+	    "group:descriptor" "group:file" "group:ipc" "group:memory"
+	    "group:network" "group:process" "group:signal"
+	}
+}
+
 proc do_syscall_tests {} {
     # NOTE: We don't have to point gdb at the correct data-directory.
     # For the build tree that is handled by INTERNAL_GDBFLAGS.
@@ -435,6 +471,9 @@ proc do_syscall_tests {} {
     # Testing if the 'catch syscall' command works when switching to
     # different architectures on-the-fly (PR gdb/10737).
     if [runto_main] then { test_catch_syscall_multi_arch }
+
+    # Testing the 'catch' syscall command for a group of syscalls.
+    if [runto_main] then { test_catch_syscall_group }
 }
 
 proc test_catch_syscall_without_args_noxml {} {