gdb/testsuite/gdb.dwarf2/main-subprogram.exp

   1 # Copyright 2016-2023 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 load_lib dwarf.exp
  16
  17 # This test can only be run on targets which support DWARF-4 and use gas.
  18 if {![dwarf2_support]} {
  19     return 0
  20 }
  21
  22 if { [use_gdb_stub] } {
  23     unsupported "test requires running"
  24     return
  25 }
  26
  27 standard_testfile .c -dw.S
  28
  29 # Make some DWARF for the test.
  30 set asm_file [standard_output_file $srcfile2]
  31 Dwarf::assemble $asm_file {
  32     global srcfile
  33
  34     cu {} {
  35         DW_TAG_compile_unit {
  36                 {DW_AT_language @DW_LANG_C}
  37                 {DW_AT_name     $srcfile}
  38                 {DW_AT_comp_dir /tmp}
  39         } {
  40             declare_labels type
  41
  42             type: DW_TAG_base_type {
  43                 {DW_AT_byte_size 4 DW_FORM_sdata}
  44                 {DW_AT_encoding  @DW_ATE_signed}
  45                 {DW_AT_name      int}
  46             }
  47
  48             DW_TAG_subprogram {
  49                 {MACRO_AT_func {mymain}}
  50                 {type :$type}
  51                 {DW_AT_main_subprogram 1 flag}
  52             } {
  53             }
  54         }
  55     }
  56 }
  57
  58 if {[prepare_for_testing "failed to prepare" ${testfile} \
  59          [list $srcfile $asm_file] {nodebug}]} {
  60     return -1
  61 }
  62
  63 set have_index [exec_has_index_section $binfile]
  64
  65 # Test that the "start" command stops in the "mymain" function.
  66 # This should happen because we used DW_AT_main_subprogram to tell gdb
  67 # that this was the real "main".
  68
  69 if {[gdb_start_cmd] < 0} {
  70     fail "could not start ${testfile}"
  71     return -1
  72 }
  73
  74 gdb_test_multiple "" "stopped at mymain" {
  75     -re -wrap "Temporary breakpoint .* mymain.*" {
  76         pass $gdb_test_name
  77     }
  78     -re -wrap "Temporary breakpoint .* main.*" {
  79         if { $have_index } {
  80             setup_kfail "gdb/24549" *-*-*
  81         }
  82         fail $gdb_test_name
  83     }
  84 }