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

   1 # Copyright 2008-2024 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 require supports_process_record
  40
  41 standard_testfile machinestate.c ms1.c
  42 set precsave [standard_output_file machinestate.precsave]
  43
  44 if { [prepare_for_testing "failed to prepare" $testfile \
  45           [list $srcfile $srcfile2]] } {
  46     return -1
  47 }
  48
  49 set newline "\[\r\n\]+"
  50
  51 set beginmain [gdb_get_line_number " begin main " $srcfile]
  52 set endmain   [gdb_get_line_number " end main "   $srcfile]
  53
  54 # Test begins
  55
  56 runto_main
  57
  58 # Activate process record/replay
  59 gdb_test_no_output "record" "turn on process record"
  60
  61 gdb_test "break $endmain" \
  62     "Breakpoint $decimal at .*$srcfile, line $endmain\." \
  63     "breakpoint at end of main"
  64
  65 gdb_test "continue" "Breakpoint .* end main .*" "run to end of main"
  66
  67 gdb_test "record save $precsave" \
  68     "Saved core file $precsave with execution log\."  \
  69     "save process recfile"
  70
  71 gdb_test "kill" "" "kill process, prepare to debug log file" \
  72     "Kill the program being debugged\\? \\(y or n\\) " "y"
  73
  74 gdb_test "record restore $precsave" \
  75     "Restored records from core file .*" \
  76     "reload prec save file"
  77
  78 # Proceed to end of main
  79
  80 gdb_test "break $endmain" \
  81     "Breakpoint.* file .*$srcfile, line $endmain.*" \
  82     "break at end of main"
  83
  84 gdb_test_multiple "continue" "go to end of main forward" {
  85     -re ".*Breakpoint $decimal,.*$srcfile:$endmain.*$gdb_prompt $"  {
  86         pass "go to end of main forward"
  87     }
  88     -re "No more reverse-execution history.* end main .*$gdb_prompt $" {
  89         pass "go to end of main forward"
  90     }
  91 }
  92
  93 ###
  94 ###
  95 ###
  96
  97 # Now run backward to each of several points where data is changed.
  98 #
  99
 100 # Module global variable, reverse
 101 with_test_prefix "module global variable, reverse" {
 102     set breakloc [gdb_get_line_number \
 103                       "module_global_state: set breakpoint here" $srcfile]
 104
 105     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 106     gdb_test "reverse-continue" "$srcfile:$breakloc.*" "reverse to $breakloc"
 107
 108     gdb_test "print aglobal" " = 0"  "module global reverse-breakpoint"
 109     gdb_test "step"          " module global post-change .*"
 110     gdb_test "print aglobal" " = 1"  "module global forward past bp"
 111     gdb_test "reverse-step"  "$newline$breakloc.*"
 112     gdb_test "print aglobal" " = 0"  "module global reverse-step to bp"
 113 }
 114
 115 # Module static variable, reverse
 116 with_test_prefix "module static variable, reverse" {
 117     set breakloc [gdb_get_line_number \
 118                       "module_static_state: set breakpoint here" $srcfile]
 119
 120     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 121     gdb_test "reverse-continue" "$srcfile:$breakloc.*" "reverse to $breakloc"
 122
 123     gdb_test "print astatic" " = 0"  "module static reverse-breakpoint"
 124     gdb_test "step"          " module static post-change .*"
 125     gdb_test "print astatic" " = 1"  "module static forward"
 126     gdb_test "reverse-step"  "$newline$breakloc.*"
 127     gdb_test "print astatic" " = 0"  "module static reverse-step"
 128 }
 129
 130 # Function static variable, reverse
 131 with_test_prefix "function static variable, reverse" {
 132     set breakloc [gdb_get_line_number \
 133                       "function_static_state: set breakpoint here" $srcfile]
 134
 135     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 136     gdb_test "reverse-continue" "$srcfile:$breakloc.*" "reverse to $breakloc"
 137
 138     gdb_test "print a"      " = 0"  "function static reverse-breakpoint"
 139     gdb_test "step"         " function static post-change .*"
 140     gdb_test "print a"      " = 1"  "function static forward"
 141     gdb_test "reverse-step" "$newline$breakloc.*"
 142     gdb_test "print a"      " = 0"  "function static reverse-step"
 143 }
 144
 145 # Auto variable, reverse
 146 with_test_prefix "auto variable, reverse" {
 147     set breakloc [gdb_get_line_number \
 148                       "auto_state: set breakpoint here" $srcfile]
 149
 150     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 151     gdb_test "reverse-continue" "$srcfile:$breakloc.*" "reverse to $breakloc"
 152
 153     gdb_test "print a"      " = 0"  "auto var reverse-breakpoint"
 154     gdb_test "step"         " auto post-change .*"
 155     gdb_test "print a"      " = 1"  "auto var forward"
 156     gdb_test "reverse-step" "$newline$breakloc.*"
 157     gdb_test "print a"      " = 0"  "auto var reverse-step"
 158 }
 159
 160 # Register variable, reverse
 161 with_test_prefix "register variable, reverse" {
 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 $breakloc"
 167
 168     gdb_test "print a"      " = 0"  "register var reverse-breakpoint"
 169     gdb_test "step"         " register post-change .*"
 170     gdb_test "print a"      " = 1"  \
 171         "register var step post-change, first time"
 172     gdb_test "reverse-step" "$newline$breakloc.*"
 173     gdb_test "print a"      " = 0"  "register var reverse step-to"
 174 }
 175
 176 # Proceed to beginning of main
 177
 178 gdb_test "tbreak $beginmain" ".*$srcfile, line $beginmain.*" \
 179     "tbreak at beginning of main"
 180 gdb_test "reverse-continue"  ".*$srcfile:$beginmain.*" "reverse to main"
 181
 182 # Now repeat tests while replaying forward.
 183
 184 # Register variable, forward
 185 with_test_prefix "register variable, forward" {
 186     set breakloc [gdb_get_line_number \
 187                       "register_state: set breakpoint here" $srcfile]
 188
 189     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 190     gdb_test "continue"         "$srcfile:$breakloc.*" "forward to $breakloc"
 191
 192     gdb_test "print a"      " = 0"  "register var forward-breakpoint"
 193     gdb_test "reverse-step" "hide.*"
 194     gdb_test "step"         "$newline$breakloc.*" "step, 1"
 195     gdb_test "print a"      " = 0"  "register var forward step-to"
 196     gdb_test "step"         " register post-change .*" "step, 2"
 197     gdb_test "print a"      " = 1" \
 198         "register var step post-change, second time"
 199 }
 200
 201 # Auto variable, forward
 202 with_test_prefix "auto variable, forward" {
 203     set breakloc [gdb_get_line_number \
 204                       "auto_state: set breakpoint here" $srcfile]
 205
 206     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 207     gdb_test "continue"         "$srcfile:$breakloc.*" "forward to $breakloc"
 208
 209     gdb_test "print a"      " = 0"  "auto var forward-breakpoint"
 210     gdb_test "reverse-step" "hide.*"
 211     gdb_test "step"         "$newline$breakloc.*" "step, 1"
 212     gdb_test "print a"      " = 0"  "auto var forward step-to"
 213     gdb_test "step"         " auto post-change .*" "step, 2"
 214     gdb_test "print a"      " = 1"  "auto var step post-change"
 215 }
 216
 217 # Function static variable, forward
 218 with_test_prefix "function static variable, forward" {
 219     set breakloc [gdb_get_line_number \
 220                       "function_static_state: set breakpoint here" $srcfile]
 221
 222     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 223     gdb_test "continue"         "$srcfile:$breakloc.*" "forward to $breakloc"
 224
 225     gdb_test "print a"      " = 0"  "function static forward-breakpoint"
 226     gdb_test "reverse-step" "hide.*"
 227     gdb_test "step"         "$newline$breakloc.*" "step, 1"
 228     gdb_test "print a"      " = 0"  "function static forward step-to"
 229     gdb_test "step"         " function static post-change .*" "step, 2"
 230     gdb_test "print a"      " = 1"  "function static step post-change"
 231 }
 232
 233 # Module static variable, forward
 234 with_test_prefix "module static variable, forward" {
 235     set breakloc [gdb_get_line_number \
 236                       "module_static_state: set breakpoint here" $srcfile]
 237
 238     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 239     gdb_test "continue"         "$srcfile:$breakloc.*" "forward to $breakloc"
 240
 241     gdb_test "print astatic" " = 0"  "module static forward-breakpoint"
 242     gdb_test "reverse-step"  "hide.*"
 243     gdb_test "step"          "$newline$breakloc.*" "step, 1"
 244     gdb_test "print astatic" " = 0"  "module static forward step-to"
 245     gdb_test "step"          " module static post-change .*" "step, 2"
 246     gdb_test "print astatic" " = 1"  "module static step post-change"
 247 }
 248
 249 # Module global variable, forward
 250 with_test_prefix "module global variable, forward" {
 251     set breakloc [gdb_get_line_number \
 252                       "module_global_state: set breakpoint here" $srcfile]
 253
 254     gdb_test "tbreak $breakloc" "$srcfile, line $breakloc.*"
 255     gdb_test "continue"         "$srcfile:$breakloc.*" "forward to $breakloc"
 256
 257     gdb_test "print aglobal" " = 0"  "module global forward-breakpoint"
 258     gdb_test "reverse-step"  "hide.*"
 259     gdb_test "step"          "$newline$breakloc.*" "step, 1"
 260     gdb_test "print aglobal" " = 0"  "module global forward step-to"
 261     gdb_test "step"          " module global post-change .*" "step, 2"
 262     gdb_test "print aglobal" " = 1"  "module global step post-change"
 263 }
 264