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https://sourceware.org/git/binutils-gdb.git
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229 lines
8.3 KiB
Plaintext
229 lines
8.3 KiB
Plaintext
# Copyright 2008-2018 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite.
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# This test tests the restoration of various kinds of machine state
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# to their original values by reverse execution. We will execute
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# the program forward while it changes various types of data, and
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# then execute it backward to see if their values get restored.
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#
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# The types of machine state (data) that are tested are:
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# register variable
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# auto variable
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# function static variable
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# module static variable
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# module global variable
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#
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# TODO:
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# various, possibly including...
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# .bss variable, .data variable, ...
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# shared library variable
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# heap variable (pointer)...
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# overlay variables...
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# Test forward replay
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#
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if ![supports_reverse] {
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return
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}
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standard_testfile .c ms1.c
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if { [prepare_for_testing "failed to prepare" $testfile \
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[list $srcfile $srcfile2]] } {
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return -1
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}
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set newline "\[\r\n\]+"
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set beginmain [gdb_get_line_number " begin main " $srcfile]
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set endmain [gdb_get_line_number " end main " $srcfile]
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# Test begins
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runto main
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if [supports_process_record] {
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# Activate process record/replay
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gdb_test_no_output "record" "turn on process record"
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}
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# Proceed to end of main
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gdb_test "break $endmain" \
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"Breakpoint.* file .*$srcfile, line $endmain.*" ""
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gdb_continue_to_breakpoint "end of main" ".*$srcfile:$endmain.*"
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###
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###
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###
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# Now run backward to each of several points where data is changed.
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#
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# Module global variable, reverse
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set breakloc [gdb_get_line_number \
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"module_global_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
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gdb_test "print aglobal" ".* = 0$newline" "module global reverse-breakpoint"
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gdb_test "step" ".* module global post-change .*" ""
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gdb_test "print aglobal" ".* = 1$newline" "module global forward past bp"
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gdb_test "reverse-step" ".*$newline$breakloc.*" ""
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gdb_test "print aglobal" ".* = 0$newline" "module global reverse-step to bp"
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# Module static variable, reverse
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set breakloc [gdb_get_line_number \
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"module_static_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
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gdb_test "print astatic" ".* = 0$newline" "module static reverse-breakpoint"
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gdb_test "step" ".* module static post-change .*" ""
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gdb_test "print astatic" ".* = 1$newline" "module static forward"
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gdb_test "reverse-step" ".*$newline$breakloc.*" ""
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gdb_test "print astatic" ".* = 0$newline" "module static reverse-step"
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# Function static variable, reverse
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set breakloc [gdb_get_line_number \
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"function_static_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
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gdb_test "print a" ".* = 0$newline" "function static reverse-breakpoint"
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gdb_test "step" ".* function static post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "function static forward"
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gdb_test "reverse-step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "function static reverse-step"
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# Auto variable, reverse
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set breakloc [gdb_get_line_number \
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"auto_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
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gdb_test "print a" ".* = 0$newline" "auto var reverse-breakpoint"
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gdb_test "step" ".* auto post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "auto var forward"
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gdb_test "reverse-step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "auto var reverse-step"
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# Register variable, reverse
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set breakloc [gdb_get_line_number \
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"register_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$breakloc.*" "reverse to $breakloc"
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gdb_test "print a" ".* = 0$newline" "register var reverse-breakpoint"
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gdb_test "step" ".* register post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "register var step post-change"
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gdb_test "reverse-step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "register var reverse step-to"
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# Proceed to beginning of main
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gdb_test "tbreak $beginmain" ".*$srcfile, line $beginmain.*" ""
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gdb_test "reverse-continue" ".*$srcfile:$beginmain.*" "reverse to main"
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# Now repeat tests while replaying forward.
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# Register variable, forward
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set breakloc [gdb_get_line_number \
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"register_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "continue" ".*$srcfile:$breakloc.*" "forward to $breakloc"
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gdb_test "print a" ".* = 0$newline" "register var forward-breakpoint"
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gdb_test "reverse-step" ".*hide.*" ""
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gdb_test "step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "register var forward step-to"
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gdb_test "step" ".* register post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "register var step post-change"
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# Auto variable, forward
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set breakloc [gdb_get_line_number \
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"auto_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "continue" ".*$srcfile:$breakloc.*" "forward to $breakloc"
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gdb_test "print a" ".* = 0$newline" "auto var forward-breakpoint"
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gdb_test "reverse-step" ".*hide.*" ""
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gdb_test "step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "auto var forward step-to"
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gdb_test "step" ".* auto post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "auto var step post-change"
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# Function static variable, forward
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set breakloc [gdb_get_line_number \
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"function_static_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "continue" ".*$srcfile:$breakloc.*" "forward to $breakloc"
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gdb_test "print a" ".* = 0$newline" "function static forward-breakpoint"
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gdb_test "reverse-step" ".*hide.*" ""
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gdb_test "step" ".*$newline$breakloc.*" ""
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gdb_test "print a" ".* = 0$newline" "function static forward step-to"
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gdb_test "step" ".* function static post-change .*" ""
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gdb_test "print a" ".* = 1$newline" "function static step post-change"
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# Module static variable, forward
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set breakloc [gdb_get_line_number \
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"module_static_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "continue" ".*$srcfile:$breakloc.*" "forward to $breakloc"
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gdb_test "print astatic" ".* = 0$newline" "module static forward-breakpoint"
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gdb_test "reverse-step" ".*hide.*" ""
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gdb_test "step" ".*$newline$breakloc.*" ""
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gdb_test "print astatic" ".* = 0$newline" "module static forward step-to"
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gdb_test "step" ".* module static post-change .*" ""
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gdb_test "print astatic" ".* = 1$newline" "module static step post-change"
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# Module global variable, forward
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set breakloc [gdb_get_line_number \
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"module_global_state: set breakpoint here" $srcfile]
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gdb_test "tbreak $breakloc" ".*$srcfile, line $breakloc.*" ""
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gdb_test "continue" ".*$srcfile:$breakloc.*" "forward to $breakloc"
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gdb_test "print aglobal" ".* = 0$newline" "module global forward-breakpoint"
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gdb_test "reverse-step" ".*hide.*" ""
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gdb_test "step" ".*$newline$breakloc.*" ""
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gdb_test "print aglobal" ".* = 0$newline" "module global forward step-to"
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gdb_test "step" ".* module global post-change .*" ""
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gdb_test "print aglobal" ".* = 1$newline" "module global step post-change"
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