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

   1 # Copyright 2016-2018 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 standard_testfile main-subprogram.c enum-type-dw.S
  23
  24 # Make some DWARF for the test.
  25 set asm_file [standard_output_file $srcfile2]
  26 Dwarf::assemble $asm_file {
  27     global srcdir subdir srcfile
  28
  29     set range [function_range mymain ${srcdir}/${subdir}/${srcfile}]
  30     set mymain_start [lindex $range 0]
  31     set mymain_length [lindex $range 1]
  32
  33     cu {} {
  34         DW_TAG_compile_unit {
  35                 {DW_AT_language @DW_LANG_C}
  36                 {DW_AT_name     main-subprogram.c}
  37                 {DW_AT_comp_dir /tmp}
  38         } {
  39             declare_labels type
  40
  41             type: DW_TAG_base_type {
  42                 {DW_AT_byte_size 4 DW_FORM_sdata}
  43                 {DW_AT_encoding  @DW_ATE_signed}
  44                 {DW_AT_name      int}
  45             }
  46
  47             DW_TAG_subprogram {
  48                 {name mymain}
  49                 {low_pc $mymain_start addr}
  50                 {high_pc "$mymain_start + $mymain_length" addr}
  51                 {type :$type}
  52                 {DW_AT_main_subprogram 1 flag}
  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 # Test that the "start" command stops in the "mymain" function.
  65 # This should happen because we used DW_AT_main_subprogram to tell gdb
  66 # that this was the real "main".
  67
  68 if {[gdb_start_cmd] < 0} {
  69     untested "could not start ${testfile}"
  70     return -1
  71 }
  72
  73 gdb_test "" "Temporary breakpoint .* mymain.*" "stopped at mymain"