From 29bcee2db6233ff0ea4fc9231910bb2da530308e Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Thu, 6 Mar 2025 21:19:39 +0100
Subject: [PATCH 10/10] [gdb/testsuite] Add gdb.arch/s390-disassemble.exp

In commit a98a6fa2d8e ("s390: Add arch15 instructions"), support for
new instructions was added to libopcodes, but the added tests only exercise
this for gas.

Add a test-case gdb.arch/s390-disassemble.exp that checks gdb's ability to
disassemble one of these instructions.

Tested on s390x-linux.
---
 gdb/testsuite/gdb.arch/s390-disassemble.c   | 23 ++++++++++++++
 gdb/testsuite/gdb.arch/s390-disassemble.exp | 35 +++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 gdb/testsuite/gdb.arch/s390-disassemble.c
 create mode 100644 gdb/testsuite/gdb.arch/s390-disassemble.exp

diff --git a/gdb/testsuite/gdb.arch/s390-disassemble.c b/gdb/testsuite/gdb.arch/s390-disassemble.c
new file mode 100644
index 00000000000..ee6469ddf98
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/s390-disassemble.c
@@ -0,0 +1,23 @@
+/* This file is part of GDB, the GNU debugger.
+
+   Copyright 2025 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/>.  */
+
+void
+clzg (void)
+{
+  /* clzg %r0,%r3.  */
+  asm volatile (" .long 0xb9680003");
+}
diff --git a/gdb/testsuite/gdb.arch/s390-disassemble.exp b/gdb/testsuite/gdb.arch/s390-disassemble.exp
new file mode 100644
index 00000000000..0c187df3c11
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/s390-disassemble.exp
@@ -0,0 +1,35 @@
+# Copyright 2025 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/>.
+
+# Check that GDB is able to disassemble certain s390x instructions.
+
+require {istarget "s390x*-*-*"}
+
+standard_testfile
+set objfile [standard_output_file ${testfile}.o]
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" $objfile object {}] != "" } {
+    return -1
+}
+
+clean_restart $objfile
+
+gdb_test "disassemble clzg" \
+    [join \
+	 [list \
+	      ".*\t" \
+	      "clzg\t%r0,%r3" \
+	      "\r\n.*"] \
+	 ""]
-- 
2.43.0