gdb/testsuite/gdb.dwarf2/comp-unit-lang.exp

   1 # Copyright 2014-2015 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 # Test that GDB determines the frame's language based on the comp
  17 # unit's language, even if the file has an unknown file extension,
  18 # such as ".txt".
  19
  20 load_lib dwarf.exp
  21
  22 # This test can only be run on targets which support DWARF-2 and use
  23 # gas.
  24 if {![dwarf2_support]} {
  25     return 0
  26 }
  27
  28 standard_testfile .c comp-unit-lang.S
  29
  30 # Assemble the DWARF using CU_LANG as compilation unit's language.
  31 # Run to a function in that compilation unit and check that GDB
  32 # figures out that the language is GDB_LANG.
  33
  34 proc do_test {cu_lang gdb_lang} {
  35     global testfile srcfile srcfile2
  36
  37     # Make some DWARF for the test.
  38     set asm_file [standard_output_file $srcfile2]
  39     Dwarf::assemble $asm_file {
  40         upvar cu_lang cu_lang
  41
  42         # Creating a CU with 4-byte addresses lets this test link on
  43         # both 32- and 64-bit machines.
  44         cu { addr_size 4 } {
  45             extern func_start func_end
  46
  47             compile_unit {
  48                 {name file1.txt}
  49                 {language @$cu_lang}
  50                 {low_pc func_start addr}
  51                 {high_pc func_end addr}
  52             } {
  53                 subprogram {
  54                     {external 1 flag}
  55                     {name func}
  56                     {low_pc func_start addr}
  57                     {high_pc func_end addr}
  58                 } {
  59                 }
  60             }
  61         }
  62     }
  63
  64     if { [prepare_for_testing "failed to prepare" ${testfile} \
  65               [list $srcfile $asm_file] {nodebug}] } {
  66         return -1
  67     }
  68
  69     if ![runto func] {
  70         return -1
  71     }
  72
  73     gdb_test "show language" "\"auto; currently $gdb_lang\".*"
  74 }
  75
  76 # Some paths in the debugger fall back to C.  Check C++ as well to
  77 # make sure the test doesn't happen to work because of such a
  78 # fallback.
  79 do_test DW_LANG_C "c"
  80 do_test DW_LANG_C_plus_plus "c\\+\\+"