gdb/testsuite/gdb.reverse/machinestate-precsave.exp

   1 # Copyright 2008-2020 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # This file is part of the GDB testsuite.
  17 # This test tests the restoration of various kinds of machine state
  18 # to their original values with a process record log.  We will execute
  19 # the program forward while it changes various types of data, and
  20 # then execute it backward to see if their values get restored.
  21 #
  22 # The types of machine state (data) that are tested are:
  23 #   register variable
  24 #   auto variable
  25 #   function static variable
  26 #   module static variable
  27 #   module global variable
  28 #
  29 # TODO:
  30 # various, possibly including...
  31 #   .bss variable, .data variable, ...
  32 #   shared library variable
  33 #   heap variable (pointer)...
  34 #   overlay variables...
  35 #   Test forward replay
  36 #
  37
  38 # This test suitable only for process record-replay
  39 if ![supports_process_record] {
  40     return
  41 }
  42
  43 standard_testfile machinestate.c ms1.c
  44 set precsave [standard_output_file machinestate.precsave]
  45
  46 if { [prepare_for_testing "failed to prepare" $testfile \
  47           [list $srcfile $srcfile2]] } {
  48     return -1
  49 }
  50
  51 set newline "\[\r\n\]+"
  52
  53 set beginmain [gdb_get_line_number " begin main " $srcfile]
  54 set endmain   [gdb_get_line_number " end main "   $srcfile]
  55
  56 # Test begins
  57
  58 runto main
  59
  60 if [supports_process_record] {
  61     # Activate process record/replay
  62     gdb_test_no_output "record" "turn on process record"
  63 }
  64
  65 gdb_test "break $endmain" \
  66     "Breakpoint $decimal at .*$srcfile, line $endmain\." \
  67     "breakpoint at end of main"
  68
  69 gdb_test "continue" "Breakpoint .* end main .*" "run to end of main"
  70
  71 gdb_test "record save $precsave" \
  72     "Saved core file $precsave with execution log\."  \
  73     "save process recfile"
  74
  75 gdb_test "kill" "" "kill process, prepare to debug log file" \
  76     "Kill the program being debugged\\? \\(y or n\\) " "y"
  77
  78 gdb_test "record restore $precsave" \
  79     "Restored records from core file .*" \
  80     "reload prec save file"
  81
  82 # Proceed to end of main
  83
  84 gdb_test "break $endmain" \
  85     "Breakpoint.* file .*$srcfile, line $endmain.*" ""
  86
  87 gdb_test_multiple "continue" "go to end of main forward" {
  88     -re ".*Breakpoint $decimal,.*$srcfile:$endmain.*$gdb_prompt $"  {
  89         pass "go to end of main forward"
  90     }
  91     -re "No more reverse-execution history.* end main .*$gdb_prompt $" {
  92         pass "go to end of main forward"
  93     }
  94 }
  95
  96 ###
  97 ###
  98 ###
  99
 100 # Now run backward to each of several points where data is changed.
 101 #
 102
 103 # Module global variable, reverse
 104
 105 set breakloc [gdb_get_line_number \
 106                   "module_global_state: set breakpoint here" $srcfile]
 107
 108 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 109 gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
 110
 111 gdb_test "print aglobal" ".* = 0$newline"  "module global reverse-breakpoint"
 112 gdb_test "step"          ".* module global post-change .*" ""
 113 gdb_test "print aglobal" ".* = 1$newline"  "module global forward past bp"
 114 gdb_test "reverse-step"  ".*$newline$breakloc.*" ""
 115 gdb_test "print aglobal" ".* = 0$newline"  "module global reverse-step to bp"
 116
 117
 118 # Module static variable, reverse
 119
 120 set breakloc [gdb_get_line_number \
 121                   "module_static_state: set breakpoint here" $srcfile]
 122
 123 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 124 gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
 125
 126 gdb_test "print astatic" ".* = 0$newline"  "module static reverse-breakpoint"
 127 gdb_test "step"          ".* module static post-change .*" ""
 128 gdb_test "print astatic" ".* = 1$newline"  "module static forward"
 129 gdb_test "reverse-step"  ".*$newline$breakloc.*" ""
 130 gdb_test "print astatic" ".* = 0$newline"  "module static reverse-step"
 131
 132 # Function static variable, reverse
 133
 134 set breakloc [gdb_get_line_number \
 135                   "function_static_state: set breakpoint here" $srcfile]
 136
 137 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 138 gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
 139
 140 gdb_test "print a"      ".* = 0$newline"  "function static reverse-breakpoint"
 141 gdb_test "step"         ".* function static post-change .*" ""
 142 gdb_test "print a"      ".* = 1$newline"  "function static forward"
 143 gdb_test "reverse-step" ".*$newline$breakloc.*" ""
 144 gdb_test "print a"      ".* = 0$newline"  "function static reverse-step"
 145
 146 # Auto variable, reverse
 147
 148 set breakloc [gdb_get_line_number \
 149                   "auto_state: set breakpoint here" $srcfile]
 150
 151 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 152 gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
 153
 154 gdb_test "print a"      ".* = 0$newline"  "auto var reverse-breakpoint"
 155 gdb_test "step"         ".* auto post-change .*" ""
 156 gdb_test "print a"      ".* = 1$newline"  "auto var forward"
 157 gdb_test "reverse-step" ".*$newline$breakloc.*" ""
 158 gdb_test "print a"      ".* = 0$newline"  "auto var reverse-step"
 159
 160 # Register variable, reverse
 161
 162 set breakloc [gdb_get_line_number \
 163                   "register_state: set breakpoint here" $srcfile]
 164
 165 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 166 gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
 167
 168 gdb_test "print a"      ".* = 0$newline"  "register var reverse-breakpoint"
 169 gdb_test "step"         ".* register post-change .*" ""
 170 gdb_test "print a"      ".* = 1$newline"  \
 171     "register var step post-change, first time"
 172 gdb_test "reverse-step" ".*$newline$breakloc.*" ""
 173 gdb_test "print a"      ".* = 0$newline"  "register var reverse step-to"
 174
 175 # Proceed to beginning of main
 176
 177 gdb_test "tbreak $beginmain" ".*$srcfile, line $beginmain.*" ""
 178 gdb_test "reverse-continue"  ".*$srcfile:$beginmain.*" "reverse to main"
 179
 180 # Now repeat tests while replaying forward.
 181
 182 # Register variable, forward
 183
 184 set breakloc [gdb_get_line_number \
 185                   "register_state: set breakpoint here" $srcfile]
 186
 187 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 188 gdb_test "continue"         ".*$srcfile:$breakloc.*" "forward to $breakloc"
 189
 190 gdb_test "print a"      ".* = 0$newline"  "register var forward-breakpoint"
 191 gdb_test "reverse-step" ".*hide.*" ""
 192 gdb_test "step"         ".*$newline$breakloc.*" ""
 193 gdb_test "print a"      ".* = 0$newline"  "register var forward step-to"
 194 gdb_test "step"         ".* register post-change .*" ""
 195 gdb_test "print a"      ".* = 1$newline" \
 196     "register var step post-change, second time"
 197
 198 # Auto variable, forward
 199
 200 set breakloc [gdb_get_line_number \
 201                   "auto_state: set breakpoint here" $srcfile]
 202
 203 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 204 gdb_test "continue"         ".*$srcfile:$breakloc.*" "forward to $breakloc"
 205
 206 gdb_test "print a"      ".* = 0$newline"  "auto var forward-breakpoint"
 207 gdb_test "reverse-step" ".*hide.*" ""
 208 gdb_test "step"         ".*$newline$breakloc.*" ""
 209 gdb_test "print a"      ".* = 0$newline"  "auto var forward step-to"
 210 gdb_test "step"         ".* auto post-change .*" ""
 211 gdb_test "print a"      ".* = 1$newline"  "auto var step post-change"
 212
 213 # Function static variable, forward
 214
 215 set breakloc [gdb_get_line_number \
 216                   "function_static_state: set breakpoint here" $srcfile]
 217
 218 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 219 gdb_test "continue"         ".*$srcfile:$breakloc.*" "forward to $breakloc"
 220
 221 gdb_test "print a"      ".* = 0$newline"  "function static forward-breakpoint"
 222 gdb_test "reverse-step" ".*hide.*" ""
 223 gdb_test "step"         ".*$newline$breakloc.*" ""
 224 gdb_test "print a"      ".* = 0$newline"  "function static forward step-to"
 225 gdb_test "step"         ".* function static post-change .*" ""
 226 gdb_test "print a"      ".* = 1$newline"  "function static step post-change"
 227
 228 # Module static variable, forward
 229
 230 set breakloc [gdb_get_line_number \
 231                   "module_static_state: set breakpoint here" $srcfile]
 232
 233 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 234 gdb_test "continue"         ".*$srcfile:$breakloc.*" "forward to $breakloc"
 235
 236 gdb_test "print astatic" ".* = 0$newline"  "module static forward-breakpoint"
 237 gdb_test "reverse-step"  ".*hide.*" ""
 238 gdb_test "step"          ".*$newline$breakloc.*" ""
 239 gdb_test "print astatic" ".* = 0$newline"  "module static forward step-to"
 240 gdb_test "step"          ".* module static post-change .*" ""
 241 gdb_test "print astatic" ".* = 1$newline"  "module static step post-change"
 242
 243 # Module global variable, forward
 244
 245 set breakloc [gdb_get_line_number \
 246                   "module_global_state: set breakpoint here" $srcfile]
 247
 248 gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
 249 gdb_test "continue"         ".*$srcfile:$breakloc.*" "forward to $breakloc"
 250
 251 gdb_test "print aglobal" ".* = 0$newline"  "module global forward-breakpoint"
 252 gdb_test "reverse-step"  ".*hide.*" ""
 253 gdb_test "step"          ".*$newline$breakloc.*" ""
 254 gdb_test "print aglobal" ".* = 0$newline"  "module global forward step-to"
 255 gdb_test "step"          ".* module global post-change .*" ""
 256 gdb_test "print aglobal" ".* = 1$newline"  "module global step post-change"
 257