gdb/testsuite/gdb.btrace/record_goto.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2 #
   3 # Copyright 2013-2016 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 # The "record goto" command jumps to a specific instruction in the execution
  24 # trace.  To guarantee that we always get the same execution trace, we use
  25 # an assembly source file.
  26 #
  27 # We use different assembly sources based on the target architecture.
  28 #
  29 # Luckily, they are similar enough that a single test script can handle
  30 # both.
  31 set opts {}
  32 if [info exists COMPILE] {
  33     # make check RUNTESTFLAGS="gdb.btrace/record_goto.exp COMPILE=1"
  34     standard_testfile record_goto.c
  35     lappend opts debug
  36 } elseif {[istarget "x86_64-*-*"]} {
  37         standard_testfile x86_64-record_goto.S
  38 } elseif {[istarget "i?86-*-*"]} {
  39         standard_testfile i686-record_goto.S
  40 } else {
  41     verbose "Skipping ${testfile}."
  42     return -1
  43 }
  44
  45 if [prepare_for_testing record_goto.exp $testfile $srcfile $opts] {
  46     return -1
  47 }
  48 if ![runto_main] {
  49     return -1
  50 }
  51
  52 # we want a small context sizes to simplify the test
  53 gdb_test_no_output "set record instruction-history-size 3"
  54 gdb_test_no_output "set record function-call-history-size 3"
  55
  56 # trace the call to the test function
  57 gdb_test_no_output "record btrace"
  58 gdb_test "next"
  59
  60 # start by listing all functions
  61 gdb_test "record function-call-history /ci 1, +20" [multi_line \
  62   "1\tmain\tinst 1,1" \
  63   "2\t  fun4\tinst 2,4" \
  64   "3\t    fun1\tinst 5,8" \
  65   "4\t  fun4\tinst 9,9" \
  66   "5\t    fun2\tinst 10,12" \
  67   "6\t      fun1\tinst 13,16" \
  68   "7\t    fun2\tinst 17,18" \
  69   "8\t  fun4\tinst 19,19" \
  70   "9\t    fun3\tinst 20,22" \
  71   "10\t      fun1\tinst 23,26" \
  72   "11\t    fun3\tinst 27,27" \
  73   "12\t      fun2\tinst 28,30" \
  74   "13\t        fun1\tinst 31,34" \
  75   "14\t      fun2\tinst 35,36" \
  76   "15\t    fun3\tinst 37,38" \
  77   "16\t  fun4\tinst 39,40" \
  78   ]
  79
  80 # let's see if we can go back in history
  81 gdb_test "record goto 19" ".*fun4 \\(\\) at record_goto.c:43.*"
  82
  83 # the function call history should start at the new location
  84 gdb_test "record function-call-history /ci" [multi_line \
  85   "8\t  fun4\tinst 19,19" \
  86   "9\t    fun3\tinst 20,22" \
  87   "10\t      fun1\tinst 23,26" \
  88   ] "function-call-history from 19 forwards"
  89
  90 # the instruction history should start at the new location
  91 gdb_test "record instruction-history" [multi_line \
  92   "19.*" \
  93   "20.*" \
  94   "21.*" \
  95   ] "instruction-history from 19 forwards"
  96
  97 # let's go to another place in the history
  98 gdb_test "record goto 27" ".*fun3 \\(\\) at record_goto.c:35.*"
  99
 100 # check the back trace at that location
 101 gdb_test "backtrace" [multi_line \
 102   "#0.*fun3.*at record_goto.c:35.*" \
 103   "#1.*fun4.*at record_goto.c:43.*" \
 104   "#2.*main.*at record_goto.c:49.*" \
 105   "Backtrace stopped: not enough registers or memory available to unwind further" \
 106   ]
 107
 108 # walk the backtrace
 109 gdb_test "up" ".*fun4.*at record_goto.c:43.*" "up to fun4"
 110 gdb_test "up" ".*main.*at record_goto.c:49.*" "up to main"
 111
 112 # the function call history should start at the new location
 113 gdb_test "record function-call-history /ci -" [multi_line \
 114   "9\t    fun3\tinst 20,22" \
 115   "10\t      fun1\tinst 23,26" \
 116   "11\t    fun3\tinst 27,27" \
 117   ] "function-call-history from 27 backwards"
 118
 119 # the instruction history should start at the new location
 120 gdb_test "record instruction-history -" [multi_line \
 121   "25.*" \
 122   "26.*" \
 123   "27.*" \
 124   ] "instruction-history from 27 backwards"
 125
 126 # test that we can go to the begin of the trace
 127 gdb_test "record goto begin" ".*main \\(\\) at record_goto.c:49.*"
 128
 129 # check that we're filling up the context correctly
 130 gdb_test "record function-call-history /ci -" [multi_line \
 131   "1\tmain\tinst 1,1" \
 132   "2\t  fun4\tinst 2,4" \
 133   "3\t    fun1\tinst 5,8" \
 134   ] "function-call-history from begin backwards"
 135
 136 # check that we're filling up the context correctly
 137 gdb_test "record instruction-history -" [multi_line \
 138   "1.*" \
 139   "2.*" \
 140   "3.*" \
 141   ] "instruction-history from begin backwards"
 142
 143 # we should get the exact same history from the first instruction
 144 gdb_test "record goto 2" ".*fun4 \\(\\) at record_goto.c:40.*"
 145
 146 # check that we're filling up the context correctly
 147 gdb_test "record function-call-history /ci -" [multi_line \
 148   "1\tmain\tinst 1,1" \
 149   "2\t  fun4\tinst 2,4" \
 150   "3\t    fun1\tinst 5,8\r" \
 151   ] "function-call-history from 2 backwards"
 152
 153 # check that we're filling up the context correctly
 154 gdb_test "record instruction-history -" [multi_line \
 155   "1.*" \
 156   "2.*" \
 157   "3.*" \
 158   ] "instruction-history from 2 backwards"
 159
 160 # check that we can go to the end of the trace
 161 gdb_test "record goto end" ".*main \\(\\) at record_goto.c:50.*"
 162
 163 # check that we're filling up the context correctly
 164 gdb_test "record function-call-history /ci" [multi_line \
 165   "14\t      fun2\tinst 35,36" \
 166   "15\t    fun3\tinst 37,38" \
 167   "16\t  fun4\tinst 39,40" \
 168   ] "function-call-history from end forwards"
 169
 170 # check that we're filling up the context correctly
 171 gdb_test "record instruction-history" [multi_line \
 172   "38.*" \
 173   "39.*" \
 174   "40.*\r" \
 175   ] "instruction-history from end forwards"
 176
 177 # we should get the exact same history from the second to last instruction
 178 gdb_test "record goto 39" ".*fun4 \\(\\) at record_goto.c:44.*"
 179
 180 # check that we're filling up the context correctly
 181 gdb_test "record function-call-history /ci" [multi_line \
 182   "14\t      fun2\tinst 35,36" \
 183   "15\t    fun3\tinst 37,38" \
 184   "16\t  fun4\tinst 39,40\r" \
 185   ] "function-call-history from 39 forwards"
 186
 187 # check that we're filling up the context correctly
 188 gdb_test "record instruction-history" [multi_line \
 189   "38.*" \
 190   "39.*" \
 191   "40.*\r" \
 192   ] "instruction-history from 39 forwards"