| 1 | # This testcase is part of GDB, the GNU debugger. |
| 2 | # |
| 3 | # Copyright 2013-2021 Free Software Foundation, Inc. |
| 4 | # |
| 5 | # Contributed by Intel Corp. <markus.t.metzger@intel.com> |
| 6 | # |
| 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. |
| 11 | # |
| 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. |
| 16 | # |
| 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/>. |
| 19 | |
| 20 | if { [skip_btrace_tests] } { |
| 21 | unsupported "target does not support record-btrace" |
| 22 | return -1 |
| 23 | } |
| 24 | |
| 25 | # This test is stepping on instruction level. To guarantee that we always |
| 26 | # get the same execution trace, we use an assembly source file. |
| 27 | # |
| 28 | # We use different assembly sources based on the target architecture. |
| 29 | # |
| 30 | # Luckily, they are similar enough that a single test script can handle |
| 31 | # both. |
| 32 | if [info exists COMPILE] { |
| 33 | # make check RUNTESTFLAGS="gdb.btrace/stepi.exp COMPILE=1" |
| 34 | standard_testfile record_goto.c |
| 35 | lappend opts debug |
| 36 | } elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} { |
| 37 | if {[is_amd64_regs_target]} { |
| 38 | standard_testfile x86_64-record_goto.S |
| 39 | } else { |
| 40 | standard_testfile i686-record_goto.S |
| 41 | } |
| 42 | } else { |
| 43 | unsupported "target architecture not supported" |
| 44 | return -1 |
| 45 | } |
| 46 | |
| 47 | if [prepare_for_testing "failed to prepare" $testfile $srcfile] { |
| 48 | return -1 |
| 49 | } |
| 50 | |
| 51 | if ![runto_main] { |
| 52 | untested "failed to run to main" |
| 53 | return -1 |
| 54 | } |
| 55 | |
| 56 | global gdb_prompt |
| 57 | |
| 58 | proc check_replay_at { insn } { |
| 59 | gdb_test "info record" [multi_line \ |
| 60 | "Active record target: record-btrace" \ |
| 61 | ".*" \ |
| 62 | "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \ |
| 63 | "Replay in progress\. At instruction $insn\." \ |
| 64 | ] "check replay at $insn" |
| 65 | } |
| 66 | |
| 67 | # trace the call to the test function |
| 68 | with_test_prefix "record" { |
| 69 | gdb_test_no_output "record btrace" |
| 70 | gdb_test "next" ".*" "next.1" |
| 71 | } |
| 72 | |
| 73 | # we start with stepping to make sure that the trace is fetched automatically |
| 74 | with_test_prefix "fetch" { |
| 75 | gdb_test "reverse-stepi" ".*fun4\.5.*" "reverse-stepi.1" |
| 76 | gdb_test "reverse-stepi" ".*fun4\.5.*" "reverse-stepi.2" |
| 77 | |
| 78 | # let's check where we are in the trace |
| 79 | check_replay_at 39 |
| 80 | } |
| 81 | |
| 82 | # let's step forward and check again |
| 83 | with_test_prefix "stepi" { |
| 84 | gdb_test "stepi" ".*fun4\.5.*" |
| 85 | check_replay_at 40 |
| 86 | } |
| 87 | |
| 88 | # with the next step, we stop replaying |
| 89 | with_test_prefix "end" { |
| 90 | gdb_test "stepi" ".*main\.3.*" |
| 91 | gdb_test "info record" [multi_line \ |
| 92 | "Active record target: record-btrace" \ |
| 93 | ".*" \ |
| 94 | "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \ |
| 95 | ] |
| 96 | } |
| 97 | |
| 98 | # let's try nexti |
| 99 | with_test_prefix "reverse-nexti.1" { |
| 100 | gdb_test "reverse-nexti" ".*main\.2.*" |
| 101 | check_replay_at 1 |
| 102 | } |
| 103 | |
| 104 | # we can't reverse-nexti any further |
| 105 | with_test_prefix "reverse-nexti.2" { |
| 106 | gdb_test "reverse-nexti" \ |
| 107 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 108 | "reverse-nexti.2" |
| 109 | check_replay_at 1 |
| 110 | } |
| 111 | |
| 112 | # but we can step back again |
| 113 | with_test_prefix "nexti" { |
| 114 | gdb_test "nexti" ".*main\.3.*" |
| 115 | gdb_test "info record" [multi_line \ |
| 116 | "Active record target: record-btrace" \ |
| 117 | ".*" \ |
| 118 | "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \ |
| 119 | ] |
| 120 | } |
| 121 | |
| 122 | # let's step from a goto position somewhere in the middle |
| 123 | with_test_prefix "goto" { |
| 124 | gdb_test "record goto 22" ".*fun3\.2.*" |
| 125 | with_test_prefix "goto 22" { check_replay_at 22 } |
| 126 | |
| 127 | gdb_test "stepi" ".*fun1\.1.*" "stepi.3" |
| 128 | with_test_prefix "stepi to 23" { check_replay_at 23 } |
| 129 | |
| 130 | gdb_test "reverse-stepi" ".*fun3\.2.*" "reverse-stepi.3" |
| 131 | with_test_prefix "reverse-stepi to 22" { check_replay_at 22 } |
| 132 | |
| 133 | gdb_test "nexti" ".*fun3\.3.*" |
| 134 | with_test_prefix "nexti to 27" { check_replay_at 27 } |
| 135 | |
| 136 | gdb_test "reverse-nexti" ".*fun3\.2.*" "reverse-nexti.3" |
| 137 | with_test_prefix "reverse-nexti to 22" { check_replay_at 22 } |
| 138 | } |
| 139 | |
| 140 | # let's try to step off the left end |
| 141 | with_test_prefix "goto begin" { |
| 142 | gdb_test "record goto begin" ".*main\.2.*" |
| 143 | check_replay_at 1 |
| 144 | |
| 145 | with_test_prefix "reverse-stepi" { |
| 146 | gdb_test "reverse-stepi" \ |
| 147 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 148 | "reverse-stepi.1" |
| 149 | gdb_test "reverse-stepi" \ |
| 150 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 151 | "reverse-stepi.2" |
| 152 | check_replay_at 1 |
| 153 | } |
| 154 | |
| 155 | with_test_prefix "reverse-nexti" { |
| 156 | gdb_test "reverse-nexti" \ |
| 157 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 158 | "reverse-nexti.1" |
| 159 | gdb_test "reverse-nexti" \ |
| 160 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 161 | "reverse-nexti.2" |
| 162 | check_replay_at 1 |
| 163 | } |
| 164 | |
| 165 | # we can step forward, though |
| 166 | with_test_prefix "stepi" { |
| 167 | gdb_test "stepi" ".*fun4\.1.*" |
| 168 | check_replay_at 2 |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | # let's try to step off the left end again |
| 173 | with_test_prefix "reverse-stepi" { |
| 174 | gdb_test "reverse-stepi" ".*main\.2.*" "reverse-stepi.1" |
| 175 | gdb_test "reverse-stepi" \ |
| 176 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 177 | "reverse-stepi.2" |
| 178 | gdb_test "reverse-stepi" \ |
| 179 | "No more reverse-execution history\.\r\n.*main\.2.*" \ |
| 180 | "reverse-stepi.3" |
| 181 | check_replay_at 1 |
| 182 | } |