range stepping: tests

This adds tests to verify range stepping is used as expected, by
inspecting the RSP traffic, looking for vCont;s and vCont;r packets.

gdb/testsuite/
2013-05-23  Yao Qi  <yao@codesourcery.com>
	    Pedro Alves  <palves@redhat.com>

	* gdb.base/range-stepping.c: New file.
	* gdb.base/range-stepping.exp: New file.
	* gdb.trace/range-stepping.c: New file.
	* gdb.trace/range-stepping.exp: New file.
	* lib/range-stepping-support.exp: New file.

1 files changed, 50 insertions, 0 deletions

diff --git a/gdb/testsuite/lib/range-stepping-support.exp b/gdb/testsuite/lib/range-stepping-support.exp
new file mode 100644
index 0000000..d849665
--- /dev/null
+++ b/gdb/testsuite/lib/range-stepping-support.exp
@@ -0,0 +1,50 @@
+# Copyright 2013 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/>.
+
+# Execute command CMD and check that GDB sends the expected number of
+# vCont;s and vCont;r packets.
+
+proc exec_cmd_expect_vCont_count { cmd exp_vCont_s exp_vCont_r } {
+    global gdb_prompt
+
+    gdb_test_no_output "set debug remote 1" ""
+
+    set test "${cmd}: vCont;s=${exp_vCont_s} vCont;r=${exp_vCont_r}"
+    set r_counter 0
+    set s_counter 0
+    gdb_test_multiple $cmd $test {
+	-re "vCont;s\[^\r\n\]*Packet received: T\[\[:xdigit:\]\]\[\[:xdigit:\]\]" {
+	    incr s_counter
+	    exp_continue
+	}
+	-re "vCont;r\[^\r\n\]*Packet received: T\[\[:xdigit:\]\]\[\[:xdigit:\]\]" {
+	    incr r_counter
+	    exp_continue
+	}
+	-re "\r\n" {
+	    # Prevent overflowing the expect buffer.
+	    exp_continue
+	}
+	-re "$gdb_prompt $" {
+	    if { $r_counter == ${exp_vCont_r} && $s_counter == ${exp_vCont_s} } {
+		pass $test
+	    } else {
+		fail $test
+	    }
+	}
+    }
+
+    gdb_test_no_output "set debug remote 0" ""
+}