gdb/testsuite/gdb.reverse/step-indirect-call-thunk.exp

   1 # Copyright 2018-2024 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 require supports_reverse
  17
  18 require {istarget "x86*"}
  19
  20 standard_testfile
  21
  22 set cflags {}
  23 lappend cflags debug
  24 lappend cflags additional_flags=-mindirect-branch=thunk
  25 lappend cflags additional_flags=-mfunction-return=thunk
  26
  27 set fcf_protection_none additional_flags=-fcf-protection=none
  28 if { [gdb_can_simple_compile fcf-protection-none {int main () { return 0; }} \
  29           executable $fcf_protection_none] } {
  30     lappend cflags $fcf_protection_none
  31 }
  32
  33 if { [prepare_for_testing "failed to prepare" $testfile $srcfile $cflags] } {
  34     return -1
  35 }
  36
  37 if { ![runto_main] } {
  38     return -1
  39 }
  40
  41 gdb_test_no_output "record"
  42 gdb_test "next" ".*" "record trace"
  43
  44 # Normal stepping steps through all thunks.
  45 gdb_test "reverse-step" "apply\.3.*" "reverse-step into apply"
  46 gdb_test "reverse-step" "inc\.3.*" "reverse-step into inc"
  47 gdb_test "reverse-step" "inc\.2.*" "reverse-step inside inc"
  48 gdb_test "reverse-step" "apply\.2.*" \
  49     "reverse-step through call thunk into apply, first time"
  50 gdb_test "reverse-step" "main\.2.*" "reverse-step into main"
  51 gdb_test "step" "apply\.2.*" "step into apply"
  52 gdb_test "step" "inc\.2.*" "step through call thunk into inc"
  53 gdb_test "reverse-step" "apply\.2.*" \
  54     "reverse-step through call thunk into apply, second time"
  55 gdb_test "next" "apply\.3.*" "step through thunks and over inc"
  56 gdb_test "reverse-next" "apply\.2.*" \
  57     "reverse-step through thunks and over inc"
  58
  59 # We can use instruction stepping to step into thunks.
  60 repeat_cmd_until "stepi" "apply\.2" "indirect_thunk" "stepi into call thunk"
  61 repeat_cmd_until "stepi" "indirect_thunk" "inc" \
  62     "stepi out of call thunk into inc"
  63 set alphanum_re "\[a-zA-Z0-9\]"
  64 set pic_thunk_re  "__$alphanum_re*\\.get_pc_thunk\\.$alphanum_re* \\(\\)"
  65 repeat_cmd_until "stepi" "(inc|$pic_thunk_re)" "return_thunk" "stepi into return thunk"
  66 repeat_cmd_until "stepi" "return_thunk" "apply" \
  67     "stepi out of return thunk back into apply"
  68
  69 repeat_cmd_until "reverse-stepi" "apply" "return_thunk" \
  70     "reverse-stepi into return thunk"
  71 repeat_cmd_until "reverse-stepi" "return_thunk" "inc" \
  72     "reverse-stepi out of return thunk into inc"
  73 repeat_cmd_until "reverse-stepi" "(inc|$pic_thunk_re)" "indirect_thunk" \
  74     "reverse-stepi into call thunk"
  75 repeat_cmd_until "reverse-stepi" "indirect_thunk" "apply" \
  76     "reverse-stepi out of call thunk into apply"