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

   1 # Copyright 2007-2024 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 # 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 require is_x86_like_target
  27
  28 set testfile "i386-gnu-cfi"
  29 set srcfilec ${testfile}.c
  30 set srcfileasm ${testfile}-asm.S
  31 set binfile [standard_output_file ${testfile}]
  32
  33 # some targets have leading underscores on assembly symbols.
  34 set additional_flags [gdb_target_symbol_prefix_flags]
  35
  36 if { [gdb_compile "${srcdir}/${subdir}/${srcfilec} ${srcdir}/${subdir}/${srcfileasm}" "${binfile}" executable [list debug $additional_flags]] != "" } {
  37     untested "failed to compile"
  38     return -1
  39 }
  40
  41 # Get things started.
  42
  43 clean_restart $binfile
  44
  45 # We should stop in abort(3).
  46
  47 gdb_run_cmd
  48
  49 gdb_test_multiple {} "continue to abort()" {
  50     -re ".*Program received signal SIGABRT,.*$gdb_prompt $" {
  51         pass "continue to abort()"
  52     }
  53 }
  54
  55 # Verify that the backtrace works (it would crash before).  Use the backtrace
  56 # output to find the frame number for function "gate".
  57 set gate_n ""
  58 set backtrace_re \
  59     [multi_line \
  60          "" \
  61          "#($decimal) *$hex in gate \[^\r\n\]*" \
  62          "#$decimal *$hex in main \\(\\) at .*${testfile}.c.*"]
  63 gdb_test_multiple "backtrace" "" {
  64     -re -wrap $backtrace_re {
  65         set gate_n $expect_out(1,string)
  66         pass $gdb_test_name
  67     }
  68 }
  69 if { $gate_n == "" } {
  70     return -1
  71 }
  72
  73 # Check we see the inserted `DW_CFA_GNU_negative_offset_extended' CFI.
  74 # We see there the original CFI-stored filename `gate.c'.
  75
  76 gdb_test "frame $gate_n" \
  77          "gate \\(\[^()\]*\\) at .*gate.c.*" \
  78          "shift up to the modified frame"
  79
  80 gdb_test_multiple "info frame" "existence of the CFI inserted register" {
  81     -re "Stack level $gate_n, frame at (0x\[0-9a-f\]+):.*Saved registers:.* ecx at (0x\[0-9a-f\]+),.*" {
  82         pass "existence of the CFI inserted register"
  83         if {[string compare $expect_out(1,string) $expect_out(2,string)]} {
  84             fail "value of the CFI inserted register"
  85         } else {
  86             pass "value of the CFI inserted register"
  87         }
  88     }
  89 }