gdb/testsuite/gdb.btrace/stepi.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2 #
   3 # Copyright 2013-2015 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 # check for btrace support
  21 if { [skip_btrace_tests] } { return -1 }
  22
  23 # This test is stepping on instruction level.  To guarantee that we always
  24 # get the same execution trace, we use an assembly source file.
  25 #
  26 # We use different assembly sources based on the target architecture.
  27 #
  28 # Luckily, they are similar enough that a single test script can handle
  29 # both.
  30 if {[istarget "x86_64-*-*"]} {
  31         standard_testfile x86_64-record_goto.S
  32 } elseif {[istarget "i?86-*-*"]} {
  33         standard_testfile i686-record_goto.S
  34 } else {
  35         return -1
  36 }
  37
  38 # start inferior
  39 if [prepare_for_testing stepi.exp $testfile $srcfile] {
  40     return -1
  41 }
  42
  43 global gdb_prompt
  44
  45 if ![runto_main] {
  46     return -1
  47 }
  48
  49 proc check_replay_at { insn } {
  50   gdb_test "info record" [multi_line \
  51     "Active record target: record-btrace" \
  52     ".*" \
  53     "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \
  54     "Replay in progress\.  At instruction $insn\." \
  55     ]
  56 }
  57
  58 # trace the call to the test function
  59 gdb_test_no_output "record btrace"
  60 gdb_test "next"
  61
  62 # we start with stepping to make sure that the trace is fetched automatically
  63 gdb_test "reverse-stepi" ".*fun4\.5.*"
  64 gdb_test "reverse-stepi" ".*fun4\.5.*"
  65
  66 # let's check where we are in the trace
  67 with_test_prefix "reverse-stepi to 39" { check_replay_at 39 }
  68
  69 # let's step forward and check again
  70 gdb_test "stepi" ".*fun4\.5.*"
  71 with_test_prefix "stepi to 40" { check_replay_at 40 }
  72
  73 # with the next step, we stop replaying
  74 gdb_test "stepi" ".*main\.3.*"
  75 gdb_test "info record" [multi_line \
  76   "Active record target: record-btrace" \
  77   ".*" \
  78   "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
  79   ] "stepi to live"
  80
  81 # let's try nexti
  82 gdb_test "reverse-nexti" ".*main\.2.*"
  83 with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
  84
  85 # we can't reverse-nexti any further
  86 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
  87 with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
  88
  89 # but we can step back again
  90 gdb_test "nexti" ".*main\.3.*" "next, 1.5"
  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   ] "nexti back"
  96
  97 # let's step from a goto position somewhere in the middle
  98 gdb_test "record goto 22" ".*fun3\.2.*"
  99 with_test_prefix "goto 22" { check_replay_at 22 }
 100
 101 gdb_test "stepi" ".*fun1\.1.*"
 102 with_test_prefix "stepi to 23" { check_replay_at 23 }
 103
 104 gdb_test "reverse-stepi" ".*fun3\.2.*"
 105 with_test_prefix "reverse-stepi to 22" { check_replay_at 22 }
 106
 107 gdb_test "nexti" ".*fun3\.3.*"
 108 with_test_prefix "nexti to 27" { check_replay_at 27 }
 109
 110 gdb_test "reverse-nexti" ".*fun3\.2.*"
 111 with_test_prefix "reverse-nexti to 22" { check_replay_at 22 }
 112
 113 # let's try to step off the left end
 114 gdb_test "record goto begin" ".*main\.2.*"
 115 with_test_prefix "goto begin" { check_replay_at 1 }
 116
 117 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
 118 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
 119 with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
 120
 121 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
 122 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
 123 with_test_prefix "reverse-nexti at begin" { check_replay_at 1 }
 124
 125 # we can step forward, though
 126 gdb_test "stepi" ".*fun4\.1.*"
 127 with_test_prefix "stepi to 2" { check_replay_at 2 }
 128
 129 # let's try to step off the left end again
 130 gdb_test "reverse-stepi" ".*main\.2.*"
 131 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
 132 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
 133 with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }