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

   1 #   Copyright 2008-2021 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.  It tests stepping over
  17 # consecutive instructions in reverse.
  18
  19 if ![supports_reverse] {
  20     return
  21 }
  22
  23 standard_testfile
  24
  25 if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } {
  26     return -1
  27 }
  28
  29 runto_main
  30
  31 if [supports_process_record] {
  32     # Activate process record/replay
  33     gdb_test_no_output "record" "turn on process record"
  34 }
  35
  36 set is_stmt [is_stmt_addresses $srcfile]
  37
  38 gdb_breakpoint foo
  39 gdb_test "continue" "Breakpoint $decimal, foo .*" \
  40         "continue to breakpoint in foo"
  41
  42 set foo1_addr 0
  43 set foo2_addr 0
  44 set stop_addr 0
  45
  46 gdb_test_multiple "x /2i \$pc" "get breakpoint address for foo" {
  47     global hex
  48     global foo1_addr
  49     global foo2_addr
  50     global gdb_prompt
  51
  52     -re "=> ($hex).*\[\r\n\]+   ($hex).*$gdb_prompt $" {
  53         set foo1_addr $expect_out(1,string)
  54         set foo2_addr $expect_out(2,string)
  55         pass "get breakpoint address for foo"
  56     }
  57 }
  58
  59 gdb_test "break \*$foo2_addr" "Breakpoint $decimal at $foo2_addr: file .*" \
  60         "set bp, 2nd instr"
  61
  62 set testmsg "stopped at bp, 2nd instr"
  63 gdb_test_multiple "step" $testmsg {
  64     -re -wrap "Breakpoint $decimal, ($hex) in foo.*" {
  65         set stop_addr $expect_out(1,string)
  66         if [eval expr "$foo2_addr == $stop_addr"] then {
  67             pass "stopped at bp, 2nd instr"
  68         } else {
  69             fail "stopped at bp, 2nd instr (wrong address)"
  70         }
  71     }
  72     -re -wrap "Breakpoint $decimal, foo.*" {
  73        set stop_addr [get_valueof "/x" "\$pc" "" "value of pc"]
  74        set stop_addr_is_stmt [hex_in_list $stop_addr $is_stmt]
  75        if { ! $stop_addr_is_stmt } {
  76            fail "stopped at bp, 2nd instr (missing hex prefix)"
  77        } elseif [eval expr "$foo2_addr == $stop_addr"] then {
  78            pass "stopped at bp, 2nd instr"
  79        } else {
  80            fail "stopped at bp, 2nd instr (wrong address)"
  81        }
  82     }
  83 }
  84
  85 ###
  86 ###
  87 ###
  88
  89 # Set reverse execution direction
  90
  91 gdb_test_no_output "set exec-dir reverse" "set reverse execution"
  92
  93 # Now step backward and hope to hit the first breakpoint.
  94
  95 set test_msg "stopped at bp in reverse, 1st instr"
  96 gdb_test_multiple "step" "$test_msg" {
  97     -re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" {
  98         set stop_addr $expect_out(1,string)
  99         if [eval expr "$foo1_addr == $stop_addr"] then {
 100             pass "$test_msg"
 101         } else {
 102             fail "$test_msg (wrong address)"
 103         }
 104     }
 105     -re "Breakpoint $decimal, foo.*$gdb_prompt $" {
 106         gdb_test "print \$pc == $foo1_addr" \
 107             "$decimal = 1" \
 108             "$test_msg"
 109     }
 110 }