1 # Copyright 2012-2023 Free Software Foundation, Inc.
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.
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.
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/>.
16 # This test checks that GDB can load DWARF information from two
17 # separate split .DWO files.
21 # We run objcopy locally to split out the .dwo file.
26 # This test can only be run on targets which support DWARF-2 and use gas.
27 if ![dwarf2_support] {
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
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
45 declare_labels int4_type lines_table
47 set debug_addr_lbl ".unknown!!"
49 # The information that will be split out into the .dwo file.
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
55 set debug_addr_lbl [debug_addr_label]
60 {DW_AT_comp_dir ${objdir}}
61 {DW_AT_GNU_dwo_id 0x1234 DW_FORM_data8}
63 int4_type: DW_TAG_base_type {
64 {DW_AT_byte_size 4 DW_FORM_sdata}
65 {DW_AT_encoding @DW_ATE_signed}
71 {DW_AT_name func DW_FORM_string}
72 {MACRO_AT_func {func}}
73 {DW_AT_type :$int4_type}
75 DW_TAG_formal_parameter {
77 {DW_AT_type :$int4_type}
79 DW_OP_GNU_addr_index [gdb_target_symbol global_param]
86 lines {version 2} lines_table {
87 include_dir "${srcdir}/${subdir}"
88 file_name "$srcfile" 1
91 DW_LNE_set_address $func_start
92 DW_LNS_advance_line 24
95 DW_LNE_set_address line_label_4
99 DW_LNE_set_address $func_end
100 DW_LNS_advance_line 1
106 # The information that will remain in the .o file.
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}
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
125 set debug_addr_lbl ".unknown!!"
127 declare_labels int4_type lines_table
131 # The information that will be split out into the .dwo file.
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]
140 {language @DW_LANG_C}
142 {DW_AT_comp_dir ${objdir}}
143 {DW_AT_GNU_dwo_id 0x4567 DW_FORM_data8}
145 int4_type: DW_TAG_base_type {
146 {DW_AT_byte_size 4 DW_FORM_sdata}
147 {DW_AT_encoding @DW_ATE_signed}
153 {DW_AT_name main DW_FORM_string}
154 {MACRO_AT_func {main}}
155 {DW_AT_type :$int4_type}
156 {DW_AT_decl_file 1 data1}
157 {DW_AT_decl_line 29 data1}
162 lines {version 2} lines_table {
163 include_dir "${srcdir}/${subdir}"
164 file_name "$srcfile" 1
167 DW_LNE_set_address $main_start
168 DW_LNS_advance_line 32
171 DW_LNE_set_address line_label_1
172 DW_LNS_advance_line 3
175 DW_LNE_set_address line_label_2
176 DW_LNS_advance_line 2
179 DW_LNE_set_address line_label_3
180 DW_LNS_advance_line 2
183 DW_LNE_set_address $main_end
184 DW_LNS_advance_line 2
190 # The information that will remain in the .o file.
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 $lines_table DW_FORM_sec_offset}
204 # Compile all of the input files, split the DWARF into the .dwo files.
205 set obj1 [standard_output_file "${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]]] {
214 clean_restart $binfile
220 # Do a few basic things to verify we're finding the DWO debug info.
222 gdb_test "ptype main" "type = int \\(\\)"
223 gdb_test "ptype func" "type = int \\(int\\)"
225 gdb_test "frame" "#0 *main \\(\\) at \[^\r\n\]+${srcfile}:$decimal.*" \
228 gdb_test "break func" "Breakpoint.*at.* file .*${srcfile}, line .*"
230 gdb_test "continue" "Breakpoint.* func \\(arg=-1\\).*" \
233 gdb_test "frame" "#0 *func \\(arg=-1\\) at \[^\r\n\]+${srcfile}:$decimal.*" \