1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2013-2023 Free Software Foundation, Inc.
5 # Contributed by Intel Corp. <markus.t.metzger@intel.com>
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 if { [skip_btrace_tests] } {
21 unsupported "target does not support record-btrace"
25 # This test requires the compiler to generate a tail call. To guarantee that
26 # we always get one, we use an assembly source file.
28 # We use different assembly sources based on the target architecture.
30 # Luckily, they are similar enough that a single test script can handle
33 if [info exists COMPILE] {
34 # make check RUNTESTFLAGS="gdb.btrace/tailcall.exp COMPILE=1"
35 standard_testfile tailcall.c
36 lappend opts debug optimize=-O2
37 } elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
38 if {[is_amd64_regs_target]} {
39 standard_testfile x86_64-tailcall.S
41 standard_testfile i686-tailcall.S
44 unsupported "target architecture not supported"
48 if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
55 # we want to see the full trace for this test
56 gdb_test_no_output "set record function-call-history-size 0"
58 # trace the call to foo
59 gdb_test_no_output "record btrace"
62 # show the flat branch trace
63 gdb_test "record function-call-history 1" [multi_line \
70 # show the branch trace with calls indented
71 gdb_test "record function-call-history /c 1" [multi_line \
79 gdb_test "record goto 4" ".*bar \\(\\) at .*tailcall.c:24\r\n.*"
82 gdb_test "backtrace" [multi_line \
83 "#0.*bar \\(\\) at tailcall.c:24" \
84 "#1.*foo \\(\\) at tailcall.c:29" \
85 "#2.*main \\(\\) at tailcall.c:37" \
86 "Backtrace stopped: not enough registers or memory available to unwind further" \
90 gdb_test "up" "#1\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" "up to foo"
91 gdb_test "up" "#2\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" "up to main"
92 gdb_test "down" "#1\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" "down to foo"
94 # test stepping into and out of tailcalls.
95 gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \
97 gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*" \
99 gdb_test "reverse-finish" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" \
101 gdb_test "reverse-step" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" \
103 gdb_test "next" "\[^\r\n\]*38.*" \
105 gdb_test "reverse-next" "\[^\r\n\]*main \\(\\) at tailcall.c:37\r\n.*" \
107 gdb_test "step" "\[^\r\n\]*foo \\(\\) at tailcall.c:29\r\n.*" \
109 gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \
111 gdb_test "reverse-step" "\[^\r\n\]*bar \\(\\) at tailcall.c:24\r\n.*" \
113 gdb_test "finish" "\[^\r\n\]*main \\(\\) at tailcall.c:38\r\n.*" \