gdb/testsuite/gdb.dwarf2/fission-absolute-dwo.exp

   1 # Copyright 2021-2023 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
  16 # This is a basic first test for using the testsuite's Dwarf assembler to
  17 # create split debug information.  There's not unique feature of GDB being
  18 # tested here, this exists only as a basic test for the testsuite
  19 # infrastructure.
  20
  21 load_lib dwarf.exp
  22
  23 # This test can only be run on targets which support DWARF-2 and use gas.
  24 if {![dwarf2_support]} {
  25     return 0
  26 }
  27
  28 standard_testfile .c -dw.S
  29
  30 set asm_file [standard_output_file $srcfile2]
  31 Dwarf::assemble $asm_file {
  32     global srcfile binfile objdir
  33
  34     set debug_addr_lbl ".unknown!!"
  35
  36     # The information that will be split out into the .dwo file.
  37     cu {fission 1} {
  38
  39         # Capture a label to the current start of the .debug_addr
  40         # section.  This will be passed to DW_AT_GNU_addr_base in the
  41         # non-split CU later.
  42         set debug_addr_lbl [debug_addr_label]
  43
  44         compile_unit {
  45             {language @DW_LANG_C}
  46             {name ${srcfile}}
  47             {DW_AT_comp_dir ${objdir}}
  48             {DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
  49         } {
  50             declare_labels int4_type struct_type
  51
  52             int4_type: DW_TAG_base_type {
  53                 {DW_AT_byte_size 4 DW_FORM_sdata}
  54                 {DW_AT_encoding  @DW_ATE_signed}
  55                 {DW_AT_name      integer}
  56             }
  57
  58             struct_type: DW_TAG_structure_type {
  59                 {DW_AT_name "foo_t"}
  60                 {DW_AT_byte_size 12 DW_FORM_sdata}
  61             } {
  62                 member {
  63                     {name "aa"}
  64                     {type :$int4_type}
  65                     {data_member_location 0 data1}
  66                 }
  67                 member {
  68                     {name "bb"}
  69                     {type :$int4_type}
  70                     {data_member_location 4 data1}
  71                 }
  72                 member {
  73                     {name "cc"}
  74                     {type :$int4_type}
  75                     {data_member_location 8 data1}
  76                 }
  77             }
  78
  79             DW_TAG_variable {
  80                 {DW_AT_name global_var}
  81                 {DW_AT_type :$struct_type}
  82                 {DW_AT_location {
  83                     DW_OP_GNU_addr_index [gdb_target_symbol global_var]
  84                 } SPECIAL_expr}
  85                 {external 1 flag}
  86             }
  87
  88             subprogram {
  89                 {external 1 flag}
  90                 {DW_AT_name main DW_FORM_string}
  91                 {MACRO_AT_func {main}}
  92             }
  93         }
  94     }
  95
  96     # The information that will remain in the .o file.
  97     cu {} {
  98         compile_unit {
  99             {DW_AT_GNU_dwo_name ${binfile}.dwo DW_FORM_strp}
 100             {DW_AT_comp_dir ${objdir}}
 101             {DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
 102             {DW_AT_GNU_addr_base $debug_addr_lbl}
 103         } {
 104             # Nothing.
 105         }
 106     }
 107 }
 108
 109 # Compile both source files to create the executable.  As we compile
 110 # ASM_FILE we split out the debug information into the dwo file.
 111 set object_file [standard_output_file ${testfile}.o]
 112 if { [build_executable_and_dwo_files "${testfile}.exp" ${binfile} {nodebug} \
 113           [list $asm_file {nodebug split-dwo} ${object_file}] \
 114           [list $srcfile {nodebug}]] } {
 115     return -1
 116 }
 117
 118 # Now we can start GDB.
 119 clean_restart ${testfile}
 120
 121 if ![runto_main] {
 122     return -1
 123 }
 124
 125 # Print the type of global_var.  This type information is entirely
 126 # fictional, it only exists in the DWARF.  If we don't have the DWARF
 127 # information then there's no way we can print this.
 128 gdb_test "p global_var" " = \\{aa = 0, bb = 0, cc = 0\\}"