Until now this feature has existed but was not documented. Adding docs
and tests.
gdb/ChangeLog:
2017-06-06 Stafford Horne <shorne@gmail.com>
* infcmd.c (_initialize_infcmd): Add help for info reg $reggroup
feature.
gdb/doc/ChangeLog:
2017-06-06 Stafford Horne <shorne@gmail.com>
* gdb.texinfo (Registers): Document info reg $reggroup feature.
gdb/testsuite/ChangeLog:
2017-06-06 Stafford Horne <shorne@gmail.com>
* gdb.base/reggroups.c: New file.
* gdb.base/reggroups.exp: New file.
---
gdb/doc/gdb.texinfo | 5 +++
gdb/infcmd.c | 8 +++--
gdb/testsuite/gdb.base/reggroups.c | 5 +++
gdb/testsuite/gdb.base/reggroups.exp | 63
++++++++++++++++++++++++++++++++++++
4 files changed, 79 insertions(+), 2 deletions(-)
create mode 100644 gdb/testsuite/gdb.base/reggroups.c
create mode 100644 gdb/testsuite/gdb.base/reggroups.exp
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 60ed80c363..e169260e7e 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -11023,6 +11023,11 @@ and vector registers (in the selected stack
frame).
Print the names and values of all registers, including floating-point
and vector registers (in the selected stack frame).
+@item info registers @var{reggroup} @dots{}
+Print the name and value of the registers in each of the specified
+@var{reggroup}. The @var{reggoup} can be any of those returned by
+@code{maint print reggroups}.
+
@item info registers @var{regname} @dots{}
Print the @dfn{relativized} value of each specified register
@var{regname}.
As discussed in detail below, register values are normally relative to
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index 8bde28eab6..6e449d4a0e 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -3460,13 +3460,17 @@ interrupt all running threads in non-stop
mode, use the -a option."));
c = add_info ("registers", info_registers_command, _("\
List of integer registers and their contents, for selected stack
frame.\n\
-Register name as argument means describe only that register."));
+Register name as argument means describe only that register.\n\
+Register group name as argument means describe the registers in the\n\
+named register group."));
add_info_alias ("r", "registers", 1);
set_cmd_completer (c, reg_or_group_completer);
c = add_info ("all-registers", info_all_registers_command, _("\
List of all registers and their contents, for selected stack frame.\n\
-Register name as argument means describe only that register."));
+Register name as argument means describe only that register.\n\
+Register group name as argument means describe the registers in the\n\
+named register group."));
set_cmd_completer (c, reg_or_group_completer);
add_info ("program", info_program_command,
diff --git a/gdb/testsuite/gdb.base/reggroups.c
b/gdb/testsuite/gdb.base/reggroups.c
new file mode 100644
index 0000000000..8e8f518aae
--- /dev/null
+++ b/gdb/testsuite/gdb.base/reggroups.c
@@ -0,0 +1,5 @@
+int
+main()
+{
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.base/reggroups.exp
b/gdb/testsuite/gdb.base/reggroups.exp
new file mode 100644
index 0000000000..c10f02567d
--- /dev/null
+++ b/gdb/testsuite/gdb.base/reggroups.exp
@@ -0,0 +1,63 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2017 Free Software Foundation, Inc.
+
+# 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/>.
+
+# Test listing reggroups and the registers in each group.
+
+standard_testfile
+
+if {[prepare_for_testing "failed to prepare" $testfile $srcfile
debug]} {
+ return -1
+}
+
+if ![runto_main] then {
+ fail "can't run to main"
+ return 0
+}
+
+proc fetch_reggroups {test} {
+ global gdb_prompt
+ global expect_out
+
+ set reggroups {}
+ gdb_test_multiple "maint print reggroups" "get reggroups" {
+ -re "maint print reggroups\r\n" {
+ exp_continue
+ }
+ -re "^ Group\[ \t\]+Type\[ \t\]+\r\n" {
+ exp_continue
+ }
+ -re "^ (\[0-9a-zA-Z\-\]+)\[ \t\]+(user|internal)\[ \t\]+\r\n" {
+ lappend reggroups $expect_out(1,string)
+ exp_continue
+ }
+ -re ".*$gdb_prompt $" {