gdb/testsuite/gdb.twreverse/consecutive-reverse.exp

   1 #   Copyright 2008 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 # Please email any bugs, comments, and/or additions to this file to:
  17 # bug-gdb@prep.ai.mit.edu
  18
  19 # Based on a file written by Michael Snyder. (msnyder@redhat.com)
  20
  21 #
  22 # Test breakpoints at consecutive instruction addresses.
  23 #
  24
  25 set testfile "consecutive-reverse"
  26 set srcfile ${testfile}.c
  27
  28 if { [prepare_for_testing $testfile.exp $testfile $srcfile] } {
  29     return -1
  30 }
  31
  32 runto main
  33
  34 # FIXME 'record' command should say something so we know it's working.
  35 gdb_test "record" "" "start recording"
  36
  37 gdb_breakpoint foo
  38 gdb_test "continue" "Breakpoint $decimal, foo .*" \
  39         "continue to breakpoint in foo"
  40
  41 set foo1_addr 0
  42 set foo2_addr 0
  43 set stop_addr 0
  44
  45 send_gdb "x /2i \$pc\n"
  46 gdb_expect {
  47     global hex
  48     global foo1_addr
  49     global foo2_addr
  50     global gdb_prompt
  51
  52     -re "($hex).*\[\r\n\]+($hex).*$gdb_prompt $" {
  53         set foo1_addr $expect_out(1,string)
  54         set foo2_addr $expect_out(2,string)
  55         pass "get breakpoint address for foo"
  56     }
  57     -re ".*$gdb_prompt $" {
  58         fail "get breakpoint address for foo"
  59         return 0;
  60     }
  61     timeout {
  62         fail "get breakpoint address for foo (timeout)"
  63         return 0;
  64     }
  65 }
  66
  67 gdb_test "break \*$foo2_addr" "Breakpoint $decimal at $foo2_addr: file .*" \
  68         "set bp, 2nd instr"
  69
  70 send_gdb "step\n"
  71 gdb_expect {
  72     -re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" {
  73         set stop_addr $expect_out(1,string)
  74         if [eval expr "$foo2_addr == $stop_addr"] then {
  75             pass "stopped at bp, 2nd instr"
  76         } else {
  77             fail "stopped at bp, 2nd instr (wrong address)"
  78         }
  79     }
  80     -re ".*$gdb_prompt $" {
  81         fail "stopped at bp, 2nd instr"
  82     }
  83     timeout {
  84         fail "stopped at bp, 2nd instr (timeout)"
  85
  86     }
  87 }
  88
  89 ###
  90 ###
  91 ###
  92
  93 # Set reverse execution direction
  94 # FIXME: command needs to acknowledge, so we can test if it succeeded.
  95
  96 gdb_test "set exec-dir reverse" "" "set reverse execution"
  97
  98 # Now step backward and hope to hit the first breakpoint.
  99
 100 set test_msg "stopped at bp in reverse, 1st instr"
 101 gdb_test_multiple "step" "$test_msg" {
 102     -re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" {
 103         set stop_addr $expect_out(1,string)
 104         if [eval expr "$foo1_addr == $stop_addr"] then {
 105             pass "$test_msg"
 106         } else {
 107             fail "$test_msg (wrong address)"
 108         }
 109     }
 110     -re "Breakpoint $decimal, foo.*$gdb_prompt $" {
 111         send_gdb "print \$pc == $foo1_addr\n"
 112         gdb_expect {
 113             -re "$decimal = 1\[\r\n\]+$gdb_prompt $" {
 114                 pass "$test_msg"
 115             }
 116             -re "$decimal = 0\[\r\n\]+$gdb_prompt $" {
 117                 fail "$test_msg (wrong address)"
 118             }
 119         }
 120     }
 121     -re ".*$gdb_prompt $" {
 122         fail "$test_msg"
 123     }
 124 }