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

   1 # Copyright 2014-2021 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 # 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 .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 $asm_file {
  40         upvar cu_lang cu_lang
  41
  42         # Creating a CU with 4-byte addresses lets this test link on
  43         # both 32- and 64-bit machines.
  44         cu { addr_size 4 } {
  45             compile_unit {
  46                 {name file1.txt}
  47                 {language @$cu_lang}
  48                 {MACRO_AT_range {func}}
  49             } {
  50                 subprogram {
  51                     {external 1 flag}
  52                     {MACRO_AT_func {func}}
  53                 } {
  54                 }
  55             }
  56         }
  57     }
  58
  59     if { [prepare_for_testing "failed to prepare" ${testfile} \
  60               [list $srcfile $asm_file] {nodebug}] } {
  61         return -1
  62     }
  63
  64     if ![runto func] {
  65         return -1
  66     }
  67
  68     gdb_test "show language" "\"auto; currently $gdb_lang\".*"
  69 }
  70
  71 proc do_test_with_prefix {cu_lang gdb_lang} {
  72     with_test_prefix $gdb_lang {
  73         do_test $cu_lang $gdb_lang
  74     }
  75 }
  76
  77 # Some paths in the debugger fall back to C.  Check C++ as well to
  78 # make sure the test doesn't happen to work because of such a
  79 # fallback.
  80 do_test_with_prefix DW_LANG_C "c"
  81 do_test_with_prefix DW_LANG_C_plus_plus "c\\+\\+"