gdb/testsuite/gdb.dwarf2/implptrpiece.exp

   1 # Copyright 2013-2014 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 load_lib dwarf.exp
  17
  18 # This test can only be run on targets which support DWARF-2 and use gas.
  19 if {![dwarf2_support]} {
  20     return 0
  21 }
  22
  23 if { [skip_cplus_tests] } { continue }
  24
  25 standard_testfile main.c implptrpiece-dw.S
  26
  27 # Make some DWARF for the test.
  28 set asm_file [standard_output_file $srcfile2]
  29
  30 Dwarf::assemble $asm_file {
  31     # Using a funny address size here and in the pointer type lets us
  32     # also check for a sign-extension bug in the
  33     # DW_OP_GNU_implicit_pointer code.
  34     cu { addr_size 2 } {
  35         compile_unit {} {
  36             declare_labels struct_label short_type_label
  37             declare_labels char_type_label ptr_label
  38             declare_labels var_label
  39
  40             struct_label: structure_type {
  41                 {name S}
  42                 {byte_size 4 DW_FORM_sdata}
  43             } {
  44                 member {
  45                     {name a}
  46                     {type :$short_type_label}
  47                     {data_member_location 0 DW_FORM_sdata}
  48                 }
  49                 member {
  50                     {name b}
  51                     {type :$char_type_label}
  52                     {data_member_location 2 DW_FORM_sdata}
  53                 }
  54                 member {
  55                     {name c}
  56                     {type :$char_type_label}
  57                     {data_member_location 3 DW_FORM_sdata}
  58                 }
  59             }
  60
  61             short_type_label: base_type {
  62                 {name "short int"}
  63                 {encoding @DW_ATE_signed}
  64                 {byte_size 2 DW_FORM_sdata}
  65             }
  66
  67             char_type_label: base_type {
  68                 {name "signed char"}
  69                 {encoding @DW_ATE_signed}
  70                 {byte_size 1 DW_FORM_sdata}
  71             }
  72
  73             # See comment above to understand the pointer size.
  74             ptr_label: pointer_type {
  75                 {byte_size 2 DW_FORM_sdata}
  76                 {type :$char_type_label}
  77             }
  78
  79             var_label: DW_TAG_variable {
  80                 {name s}
  81                 {type :$struct_label}
  82                 {location {
  83                     const1u 1
  84                     stack_value
  85                     piece 2
  86                     const1u 2
  87                     stack_value
  88                     piece 1
  89                     const1u 3
  90                     stack_value
  91                     piece 1
  92                 } SPECIAL_expr}
  93             }
  94
  95             DW_TAG_variable {
  96                 {name p}
  97                 {type :$ptr_label}
  98                 {location {
  99                     GNU_implicit_pointer $var_label 2
 100                 } SPECIAL_expr}
 101             }
 102         }
 103     }
 104 }
 105
 106 if { [build_executable ${testfile}.exp ${testfile} \
 107           [list $srcfile $asm_file] {nodebug}] } {
 108     return -1
 109 }
 110
 111 # We need --readnow because otherwise we never read in the CU we
 112 # created above.
 113 set saved_gdbflags $GDBFLAGS
 114 set GDBFLAGS "$GDBFLAGS -readnow"
 115 clean_restart ${testfile}
 116 set GDBFLAGS $saved_gdbflags
 117
 118 if ![runto_main] {
 119     return -1
 120 }
 121
 122 gdb_test "print/d p\[-1\]" " = 0"