gdb/testsuite/gdb.dwarf2/fission-multi-cu.exp

   1 # Copyright 2012-2022 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 test checks that GDB can load DWARF information from two
  17 # separate split .DWO files.
  18
  19 load_lib dwarf.exp
  20
  21 # We run objcopy locally to split out the .dwo file.
  22 if [is_remote host] {
  23     return 0
  24 }
  25
  26 # This test can only be run on targets which support DWARF-2 and use gas.
  27 if ![dwarf2_support] {
  28     return 0
  29 }
  30
  31 # We place the entire source code for the test into a single .c file,
  32 # but we generate the DWARF in two separate .S files.  Each .S is
  33 # compiled to a .o, then the DWARF is split into a .dwo file.  Finally
  34 # the all three .o files are merged into a single executable that will
  35 # reference the two .dwo files.
  36 standard_testfile .c -1-dw.S -2-cw.S
  37
  38 # Generate the first .S file.
  39 set asm_file_1 [standard_output_file $srcfile2]
  40 Dwarf::assemble $asm_file_1 {
  41     global srcfile binfile objdir srcdir subdir
  42
  43     get_func_info func
  44
  45     declare_labels int4_type lines_table
  46
  47     set debug_addr_lbl ".unknown!!"
  48
  49     # The information that will be split out into the .dwo file.
  50     cu {fission 1} {
  51
  52         # Capture a label to the current start of the .debug_addr
  53         # section.  This will be passed to DW_AT_GNU_addr_base in the
  54         # non-split CU later.
  55         set debug_addr_lbl [debug_addr_label]
  56
  57         compile_unit {
  58             {language @DW_LANG_C}
  59             {name ${srcfile}}
  60             {DW_AT_comp_dir ${objdir}}
  61             {DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
  62         } {
  63             int4_type: DW_TAG_base_type {
  64                 {DW_AT_byte_size 4 DW_FORM_sdata}
  65                 {DW_AT_encoding  @DW_ATE_signed}
  66                 {DW_AT_name      int}
  67             }
  68
  69             subprogram {
  70                 {external 1 flag}
  71                 {DW_AT_name func DW_FORM_string}
  72                 {MACRO_AT_func {func}}
  73                 {DW_AT_type :$int4_type}
  74             } {
  75                 DW_TAG_formal_parameter {
  76                     {DW_AT_name arg}
  77                     {DW_AT_type :$int4_type}
  78                     {DW_AT_location {
  79                         DW_OP_GNU_addr_index [gdb_target_symbol global_param]
  80                     } SPECIAL_expr}
  81                 }
  82             }
  83         }
  84     }
  85
  86     lines {version 2} lines_table {
  87         include_dir "${srcdir}/${subdir}"
  88         file_name "$srcfile" 1
  89
  90         program {
  91             DW_LNE_set_address $func_start
  92             DW_LNS_advance_line 24
  93             DW_LNS_copy
  94
  95             DW_LNE_set_address line_label_4
  96             DW_LNS_advance_line 3
  97             DW_LNS_copy
  98
  99             DW_LNE_set_address $func_end
 100             DW_LNS_advance_line 1
 101             DW_LNS_copy
 102             DW_LNE_end_sequence
 103         }
 104     }
 105
 106     # The information that will remain in the .o file.
 107     cu {} {
 108         compile_unit {
 109             {DW_AT_GNU_dwo_name ${binfile}-1-dw.dwo DW_FORM_strp}
 110             {DW_AT_comp_dir ${objdir}}
 111             {DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
 112             {DW_AT_GNU_addr_base $debug_addr_lbl}
 113             {stmt_list $lines_table DW_FORM_sec_offset}
 114         } {
 115             # Nothing.
 116         }
 117     }
 118 }
 119
 120 # Generate the second .S file.
 121 set asm_file_2 [standard_output_file $srcfile3]
 122 Dwarf::assemble $asm_file_2 {
 123     global srcfile binfile objdir srcdir subdir
 124
 125     set debug_addr_lbl ".unknown!!"
 126
 127     declare_labels int4_type lines_table
 128
 129     get_func_info main
 130
 131     # The information that will be split out into the .dwo file.
 132     cu {fission 1} {
 133
 134         # Capture a label to the current start of the .debug_addr
 135         # section.  This will be passed to DW_AT_GNU_addr_base in the
 136         # non-split CU later.
 137         set debug_addr_lbl [debug_addr_label]
 138
 139         compile_unit {
 140             {language @DW_LANG_C}
 141             {name ${srcfile}}
 142             {DW_AT_comp_dir ${objdir}}
 143             {DW_AT_GNU_dwo_id 0x4567 DW_FORM_data8}
 144         } {
 145             int4_type: DW_TAG_base_type {
 146                 {DW_AT_byte_size 4 DW_FORM_sdata}
 147                 {DW_AT_encoding  @DW_ATE_signed}
 148                 {DW_AT_name      int}
 149             }
 150
 151             subprogram {
 152                 {external 1 flag}
 153                 {DW_AT_name main DW_FORM_string}
 154                 {MACRO_AT_func {main}}
 155                 {DW_AT_type :$int4_type}
 156                 {DW_AT_decl_file 1 data1}
 157                 {DW_AT_decl_line 29 data1}
 158             }
 159         }
 160     }
 161
 162     lines {version 2} lines_table {
 163         include_dir "${srcdir}/${subdir}"
 164         file_name "$srcfile" 1
 165
 166         program {
 167             DW_LNE_set_address $main_start
 168             DW_LNS_advance_line 32
 169             DW_LNS_copy
 170
 171             DW_LNE_set_address line_label_1
 172             DW_LNS_advance_line 3
 173             DW_LNS_copy
 174
 175             DW_LNE_set_address line_label_2
 176             DW_LNS_advance_line 2
 177             DW_LNS_copy
 178
 179             DW_LNE_set_address line_label_3
 180             DW_LNS_advance_line 2
 181             DW_LNS_copy
 182
 183             DW_LNE_set_address $main_end
 184             DW_LNS_advance_line 2
 185             DW_LNS_copy
 186             DW_LNE_end_sequence
 187         }
 188     }
 189
 190     # The information that will remain in the .o file.
 191     cu {} {
 192         compile_unit {
 193             {DW_AT_GNU_dwo_name ${binfile}-2-dw.dwo DW_FORM_strp}
 194             {DW_AT_comp_dir ${objdir}}
 195             {DW_AT_GNU_dwo_id 0x4567 DW_FORM_data8}
 196             {DW_AT_GNU_addr_base $debug_addr_lbl}
 197             {stmt_list $lines_table DW_FORM_sec_offset}
 198         } {
 199             # Nothing.
 200         }
 201     }
 202 }
 203
 204 # Compile all of the input files, split the DWARF into the .dwo files.
 205 set obj1 [standard_output_file "${testfile}-1-dw.o"]
 206 set obj2 [standard_output_file "${testfile}-2-dw.o"]
 207 if [build_executable_and_dwo_files "$testfile.exp" "${binfile}" {nodebug} \
 208         [list $asm_file_1 [list nodebug split-dwo] $obj1] \
 209         [list $asm_file_2 [list nodebug split-dwo] $obj2] \
 210         [list $srcfile  [list nodebug]]] {
 211     return -1
 212 }
 213
 214 clean_restart $binfile
 215
 216 if ![runto_main] {
 217     return -1
 218 }
 219
 220 # Do a few basic things to verify we're finding the DWO debug info.
 221
 222 gdb_test "ptype main" "type = int \\(\\)"
 223 gdb_test "ptype func" "type = int \\(int\\)"
 224
 225 gdb_test "frame" "#0 *main \\(\\) at \[^\r\n\]+${srcfile}:$decimal.*" \
 226     "frame in main"
 227
 228 gdb_test "break func" "Breakpoint.*at.* file .*${srcfile}, line .*"
 229
 230 gdb_test "continue" "Breakpoint.* func \\(arg=-1\\).*" \
 231     "continue to func"
 232
 233 gdb_test "frame" "#0 *func \\(arg=-1\\) at \[^\r\n\]+${srcfile}:$decimal.*" \
 234     "frame in func"