gdb/testsuite/gdb.arch/i386-gnu-cfi.exp

   1 # Copyright 2007-2022 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@gnu.org
  18
  19 # This file is part of the gdb testsuite.
  20
  21 # Unwinding of DW_CFA_GNU_negative_offset_extended test program.
  22
  23 # Test i386 unwinder.
  24
  25
  26 if { ![is_x86_like_target] } then {
  27     verbose "Skipping i386 unwinder tests."
  28     return
  29 }
  30
  31 set testfile "i386-gnu-cfi"
  32 set srcfilec ${testfile}.c
  33 set srcfileasm ${testfile}-asm.S
  34 set binfile [standard_output_file ${testfile}]
  35
  36 # some targets have leading underscores on assembly symbols.
  37 set additional_flags [gdb_target_symbol_prefix_flags]
  38
  39 if { [gdb_compile "${srcdir}/${subdir}/${srcfilec} ${srcdir}/${subdir}/${srcfileasm}" "${binfile}" executable [list debug $additional_flags]] != "" } {
  40     untested "failed to compile"
  41     return -1
  42 }
  43
  44 # Get things started.
  45
  46 gdb_exit
  47 gdb_start
  48 gdb_reinitialize_dir $srcdir/$subdir
  49 gdb_load ${binfile}
  50
  51 # We should stop in abort(3).
  52
  53 gdb_run_cmd
  54
  55 gdb_test_multiple {} "continue to abort()" {
  56     -re ".*Program received signal SIGABRT,.*$gdb_prompt $" {
  57         pass "continue to abort()"
  58     }
  59 }
  60
  61 # Verify that the backtrace works (it would crash before).  Use the backtrace
  62 # output to find the frame number for function "gate".
  63 set gate_n ""
  64 set backtrace_re \
  65     [multi_line \
  66          "" \
  67          "#($decimal) *$hex in gate \[^\r\n\]*" \
  68          "#$decimal *$hex in main \\(\\) at .*${testfile}.c.*"]
  69 gdb_test_multiple "backtrace" "" {
  70     -re -wrap $backtrace_re {
  71         set gate_n $expect_out(1,string)
  72         pass $gdb_test_name
  73     }
  74 }
  75 if { $gate_n == "" } {
  76     return -1
  77 }
  78
  79 # Check we see the inserted `DW_CFA_GNU_negative_offset_extended' CFI.
  80 # We see there the original CFI-stored filename `gate.c'.
  81
  82 gdb_test "frame $gate_n" \
  83          "gate \\(\[^()\]*\\) at .*gate.c.*" \
  84          "shift up to the modified frame"
  85
  86 gdb_test_multiple "info frame" "existence of the CFI inserted register" {
  87     -re "Stack level $gate_n, frame at (0x\[0-9a-f\]+):.*Saved registers:.* ecx at (0x\[0-9a-f\]+),.*" {
  88         pass "existence of the CFI inserted register"
  89         if { [string compare $expect_out(1,string) $expect_out(2,string)] } then {
  90             fail "value of the CFI inserted register"
  91         } else {
  92             pass "value of the CFI inserted register"
  93         }
  94     }
  95 }