gdb/testsuite/gdb.btrace/record_goto.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2 #
   3 # Copyright 2013-2019 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 # The "record goto" command jumps to a specific instruction in the execution
  26 # trace.  To guarantee that we always get the same execution trace, we use
  27 # an assembly source file.
  28 #
  29 # We use different assembly sources based on the target architecture.
  30 #
  31 # Luckily, they are similar enough that a single test script can handle
  32 # both.
  33 set opts {}
  34 if [info exists COMPILE] {
  35     # make check RUNTESTFLAGS="gdb.btrace/record_goto.exp COMPILE=1"
  36     standard_testfile record_goto.c
  37     lappend opts debug
  38 } elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
  39         if {[is_amd64_regs_target]} {
  40                 standard_testfile x86_64-record_goto.S
  41         } else {
  42                 standard_testfile i686-record_goto.S
  43         }
  44 } else {
  45     unsupported "target architecture not supported"
  46     return -1
  47 }
  48
  49 if [prepare_for_testing "failed to prepare" $testfile $srcfile $opts] {
  50     return -1
  51 }
  52
  53 if ![runto_main] {
  54     untested "failed to run to main"
  55     return -1
  56 }
  57
  58 # we want a small context sizes to simplify the test
  59 gdb_test_no_output "set record instruction-history-size 3"
  60 gdb_test_no_output "set record function-call-history-size 3"
  61
  62 # trace the call to the test function
  63 gdb_test_no_output "record btrace"
  64 gdb_test "next"
  65
  66 # start by listing all functions
  67 gdb_test "record function-call-history /ci 1, +20" [multi_line \
  68   "1\tmain\tinst 1,1" \
  69   "2\t  fun4\tinst 2,4" \
  70   "3\t    fun1\tinst 5,8" \
  71   "4\t  fun4\tinst 9,9" \
  72   "5\t    fun2\tinst 10,12" \
  73   "6\t      fun1\tinst 13,16" \
  74   "7\t    fun2\tinst 17,18" \
  75   "8\t  fun4\tinst 19,19" \
  76   "9\t    fun3\tinst 20,22" \
  77   "10\t      fun1\tinst 23,26" \
  78   "11\t    fun3\tinst 27,27" \
  79   "12\t      fun2\tinst 28,30" \
  80   "13\t        fun1\tinst 31,34" \
  81   "14\t      fun2\tinst 35,36" \
  82   "15\t    fun3\tinst 37,38" \
  83   "16\t  fun4\tinst 39,40" \
  84   ]
  85
  86 # let's see if we can go back in history
  87 gdb_test "record goto 19" ".*fun4 \\(\\) at record_goto.c:43.*"
  88
  89 # the function call history should start at the new location
  90 gdb_test "record function-call-history /ci" [multi_line \
  91   "8\t  fun4\tinst 19,19" \
  92   "9\t    fun3\tinst 20,22" \
  93   "10\t      fun1\tinst 23,26" \
  94   ] "function-call-history from 19 forwards"
  95
  96 # the instruction history should start at the new location
  97 gdb_test "record instruction-history" [multi_line \
  98   "19.*" \
  99   "20.*" \
 100   "21.*" \
 101   ] "instruction-history from 19 forwards"
 102
 103 # let's go to another place in the history
 104 gdb_test "record goto 27" ".*fun3 \\(\\) at record_goto.c:35.*"
 105
 106 # check the back trace at that location
 107 gdb_test "backtrace" [multi_line \
 108   "#0.*fun3.*at record_goto.c:35.*" \
 109   "#1.*fun4.*at record_goto.c:43.*" \
 110   "#2.*main.*at record_goto.c:49.*" \
 111   "Backtrace stopped: not enough registers or memory available to unwind further" \
 112   ]
 113
 114 # walk the backtrace
 115 gdb_test "up" ".*fun4.*at record_goto.c:43.*" "up to fun4"
 116 gdb_test "up" ".*main.*at record_goto.c:49.*" "up to main"
 117
 118 # the function call history should start at the new location
 119 gdb_test "record function-call-history /ci -" [multi_line \
 120   "9\t    fun3\tinst 20,22" \
 121   "10\t      fun1\tinst 23,26" \
 122   "11\t    fun3\tinst 27,27" \
 123   ] "function-call-history from 27 backwards"
 124
 125 # the instruction history should start at the new location
 126 gdb_test "record instruction-history -" [multi_line \
 127   "25.*" \
 128   "26.*" \
 129   "27.*" \
 130   ] "instruction-history from 27 backwards"
 131
 132 # test that we can go to the begin of the trace
 133 gdb_test "record goto begin" ".*main \\(\\) at record_goto.c:49.*"
 134
 135 # check that we're filling up the context correctly
 136 gdb_test "record function-call-history /ci -" [multi_line \
 137   "1\tmain\tinst 1,1" \
 138   "2\t  fun4\tinst 2,4" \
 139   "3\t    fun1\tinst 5,8" \
 140   ] "function-call-history from begin backwards"
 141
 142 # check that we're filling up the context correctly
 143 gdb_test "record instruction-history -" [multi_line \
 144   "1.*" \
 145   "2.*" \
 146   "3.*" \
 147   ] "instruction-history from begin backwards"
 148
 149 # we should get the exact same history from the first instruction
 150 gdb_test "record goto 2" ".*fun4 \\(\\) at record_goto.c:40.*"
 151
 152 # check that we're filling up the context correctly
 153 gdb_test "record function-call-history /ci -" [multi_line \
 154   "1\tmain\tinst 1,1" \
 155   "2\t  fun4\tinst 2,4" \
 156   "3\t    fun1\tinst 5,8\r" \
 157   ] "function-call-history from 2 backwards"
 158
 159 # check that we're filling up the context correctly
 160 gdb_test "record instruction-history -" [multi_line \
 161   "1.*" \
 162   "2.*" \
 163   "3.*" \
 164   ] "instruction-history from 2 backwards"
 165
 166 # check that we can go to the end of the trace
 167 gdb_test "record goto end" ".*main \\(\\) at record_goto.c:50.*"
 168
 169 # check that we're filling up the context correctly
 170 gdb_test "record function-call-history /ci" [multi_line \
 171   "14\t      fun2\tinst 35,36" \
 172   "15\t    fun3\tinst 37,38" \
 173   "16\t  fun4\tinst 39,40" \
 174   ] "function-call-history from end forwards"
 175
 176 # check that we're filling up the context correctly
 177 gdb_test "record instruction-history" [multi_line \
 178   "38.*" \
 179   "39.*" \
 180   "40.*\r" \
 181   ] "instruction-history from end forwards"
 182
 183 # we should get the exact same history from the second to last instruction
 184 gdb_test "record goto 39" ".*fun4 \\(\\) at record_goto.c:44.*"
 185
 186 # check that we're filling up the context correctly
 187 gdb_test "record function-call-history /ci" [multi_line \
 188   "14\t      fun2\tinst 35,36" \
 189   "15\t    fun3\tinst 37,38" \
 190   "16\t  fun4\tinst 39,40\r" \
 191   ] "function-call-history from 39 forwards"
 192
 193 # check that we're filling up the context correctly
 194 gdb_test "record instruction-history" [multi_line \
 195   "38.*" \
 196   "39.*" \
 197   "40.*\r" \
 198   ] "instruction-history from 39 forwards"