Commit | Line | Data |
---|---|---|
88b9d363 | 1 | # Copyright 2020-2022 Free Software Foundation, Inc. |
1313c56e AB |
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 | # Setup a line table where: | |
17 | # | |
18 | # | | | | | Inline | Inline | | |
19 | # | Addr | File | Line | Stmt | Rng A | Rng B | | |
20 | # |------|------|------|------|--------|--------| | |
21 | # | 1 | 1 | 16 | Y | | | | |
22 | # | 2 | 1 | 17 | Y | | | | |
23 | # | 3 | 2 | 21 | Y | X | | | |
24 | # | 4 | 2 | 22 | Y | X | | | |
25 | # | 4 | 1 | 18 | N | X | | | |
26 | # | 5 | 2 | 23 | N | X | X | | |
27 | # | 6 | 1 | 24 | Y | | | | |
28 | # | 7 | 1 | END | Y | | | | |
29 | # |------|------|------|------|--------|--------| | |
30 | # | |
31 | # Places a brekpoint at file 2, line 22. Previously GDB would discard | |
32 | # the line table entry for this line due to switching files for the | |
33 | # file 1, line 18 non-statement line. After patching however, GDB now | |
34 | # discards the file 1, line 18 entry instead, and the breakpoint at | |
35 | # line 22 should succeed. | |
36 | # | |
37 | # The two inlined subroutine ranges 'A' and 'B' represent two possible | |
38 | # ways that a compiler might represent this siuatio in the DWARF. | |
39 | # | |
40 | # Range 'B' is something that has been seen in the wild using GCC 8.2. | |
41 | # In this case the compilers range information is clearly wrong, but | |
42 | # this shouldn't impact the main point of the test. | |
43 | # | |
44 | # Range 'A' is a hypothetical case of how the compiler might choose to | |
45 | # represent this range, this has never been seen in the wild, but is | |
46 | # an improved debug experiece over range 'B'. However, if we ever run | |
47 | # in to the situation where GDB can support the range 'A' test, or | |
48 | # support some real DWARF seen in the wild, then the range 'A' case | |
49 | # should be dropped in favour of supporting real world cases. This is | |
50 | # included here as it "just worked" once the range 'B' case was | |
51 | # working. | |
52 | ||
53 | load_lib dwarf.exp | |
54 | ||
55 | # This test can only be run on targets which support DWARF-2 and use gas. | |
56 | if {![dwarf2_support]} { | |
57 | return 0 | |
58 | } | |
59 | ||
60 | # The .c files use __attribute__. | |
61 | if [get_compiler_info] { | |
62 | return -1 | |
63 | } | |
64 | if !$gcc_compiled { | |
65 | return 0 | |
66 | } | |
67 | ||
68 | # Prepare and run the test. | |
69 | proc do_test { start_label func_name tag } { | |
70 | global srcfile srcfile2 srcfile3 srcfile4 testfile | |
71 | ||
72 | standard_testfile dw2-inline-header-lbls.c dw2-inline-header-${tag}.S \ | |
73 | dw2-inline-header.c dw2-inline-header.h | |
74 | ||
75 | set build_options {nodebug optimize=-O1} | |
76 | ||
77 | set asm_file [standard_output_file $srcfile2] | |
78 | Dwarf::assemble $asm_file { | |
79 | global srcdir subdir srcfile srcfile3 srcfile4 testfile | |
80 | upvar build_options build_options | |
81 | upvar start_label start_label | |
82 | declare_labels lines_label callee_subprog_label | |
83 | ||
84 | get_func_info main $build_options | |
85 | ||
86 | cu {} { | |
87 | compile_unit { | |
88 | {producer "gcc" } | |
89 | {language @DW_LANG_C} | |
90 | {name ${srcfile3}} | |
91 | {low_pc 0 addr} | |
92 | {stmt_list ${lines_label} DW_FORM_sec_offset} | |
93 | } { | |
94 | callee_subprog_label: subprogram { | |
95 | {external 1 flag} | |
96 | {name callee} | |
97 | {inline 3 data1} | |
98 | } | |
99 | subprogram { | |
100 | {external 1 flag} | |
101 | {name main} | |
102 | {low_pc $main_start addr} | |
103 | {high_pc "$main_start + $main_len" addr} | |
104 | } { | |
105 | inlined_subroutine { | |
106 | {abstract_origin %$callee_subprog_label} | |
107 | {low_pc $start_label addr} | |
108 | {high_pc line_label_6 addr} | |
109 | {call_file 1 data1} | |
110 | {call_line 18 data1} | |
111 | } | |
112 | } | |
113 | } | |
114 | } | |
115 | ||
116 | lines {version 2 default_is_stmt 1} lines_label { | |
117 | include_dir "${srcdir}/${subdir}" | |
118 | file_name "$srcfile3" 1 | |
119 | file_name "$srcfile4" 1 | |
120 | ||
121 | program { | |
122 | {DW_LNE_set_address line_label_1} | |
123 | {DW_LNS_advance_line 15} | |
124 | {DW_LNS_copy} | |
125 | ||
126 | {DW_LNE_set_address line_label_2} | |
127 | {DW_LNS_advance_line 1} | |
128 | {DW_LNS_copy} | |
129 | ||
130 | {DW_LNS_set_file 2} | |
131 | {DW_LNE_set_address line_label_3} | |
132 | {DW_LNS_advance_line 4} | |
133 | {DW_LNS_copy} | |
134 | ||
135 | {DW_LNE_set_address line_label_4} | |
136 | {DW_LNS_advance_line 1} | |
137 | {DW_LNS_copy} | |
138 | ||
139 | {DW_LNS_advance_line -4} | |
140 | {DW_LNS_set_file 1} | |
141 | {DW_LNS_negate_stmt} | |
142 | {DW_LNS_copy} | |
143 | ||
144 | {DW_LNS_set_file 2} | |
145 | {DW_LNE_set_address line_label_5} | |
146 | {DW_LNS_advance_line 5} | |
147 | {DW_LNS_copy} | |
148 | ||
149 | {DW_LNS_negate_stmt} | |
150 | {DW_LNS_set_file 1} | |
151 | {DW_LNE_set_address line_label_6} | |
152 | {DW_LNS_advance_line 1} | |
153 | {DW_LNS_copy} | |
154 | ||
155 | {DW_LNE_set_address line_label_7} | |
156 | {DW_LNE_end_sequence} | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
161 | if { [prepare_for_testing "failed to prepare" ${testfile}-${tag} \ | |
162 | [list $srcfile $asm_file] $build_options] } { | |
163 | return -1 | |
164 | } | |
165 | ||
166 | if ![runto_main] { | |
167 | return -1 | |
168 | } | |
169 | ||
170 | # Delete all breakpoints so that the output of "info breakpoints" | |
171 | # below will only contain a single breakpoint. | |
172 | delete_breakpoints | |
173 | ||
174 | # Place a breakpoint within the function in the header file. | |
175 | gdb_breakpoint "${srcfile4}:22" | |
176 | ||
177 | # Check that the breakpoint was placed where we expected. It should | |
178 | # appear at the requested line. When the bug in GDB was present the | |
179 | # breakpoint would be placed on one of the following lines instead. | |
180 | gdb_test "info breakpoints" \ | |
181 | ".* in $func_name at \[^\r\n\]+${srcfile4}:22\\y.*" \ | |
182 | "info breakpoints, $tag" | |
183 | } | |
184 | ||
185 | do_test line_label_3 "callee" "range-a" | |
186 | do_test line_label_5 "main" "range-b" |