[PATCH 1/3] reggroups: Add test and docs for `info reg $reggroup` feature

Stafford Horne
2017-06-07T22:15:54Z

Until now this feature has existed but was not documented. Adding docs
and tests.

gdb/ChangeLog:

2017-06-06 Stafford Horne <shorne@gmail.com>

* doc/gdb.texinfo: 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/testsuite/gdb.base/reggroups.c | 4 ++
gdb/testsuite/gdb.base/reggroups.exp | 71 ++++++++++++++++++++++++++++++++++++
3 files changed, 80 insertions(+)
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 9fb70f6..a11db0c 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -10878,6 +10878,11 @@ 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 restiers 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/testsuite/gdb.base/reggroups.c b/gdb/testsuite/gdb.base/reggroups.c
new file mode 100644
index 0000000..f8b643a
--- /dev/null
+++ b/gdb/testsuite/gdb.base/reggroups.c
@@ -0,0 +1,4 @@
+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 0000000..fd51c50
--- /dev/null
+++ b/gdb/testsuite/gdb.base/reggroups.exp
@@ -0,0 +1,71 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2014-2017 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 {}
+ set bad -1
+ 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 $" {
+ if { [llength $reggroups] != 0 } {
+ incr bad
+ } else {
+ set bad 1
+ }
+ }
+ }
+
+ if {$bad} {
+ fail $test
+ return {}
+ }
+
+ pass $test
+ return $reggroups
+}
+
+set reggroups [fetch_reggroups "fetch reggroups"]
+set reggroup ""
+
+foreach reggroup [lrange $reggroups 0 end] {
+ gdb_test "info reg $reggroup" ".*" "info reg $reggroup"
+}
--
2.9.4