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3d92a3e3 AB |
1 | # Copyright 2019-2020 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 shows the importance of not corrupting the order of line | |
17 | # table information. When multiple lines are given for the same | |
18 | # address the compiler usually lists these in the order in which we | |
19 | # would expect to encounter them. When stepping through nested inline | |
20 | # frames the last line given for an address is assumed by GDB to be | |
21 | # the most inner frame, and this is what GDB displays. | |
22 | # | |
23 | # If we corrupt the order of the line table entries then GDB will | |
24 | # display the wrong line as being the inner most frame. | |
25 | ||
26 | load_lib dwarf.exp | |
27 | ||
28 | # This test can only be run on targets which support DWARF-2 and use gas. | |
29 | if {![dwarf2_support]} { | |
30 | return 0 | |
31 | } | |
32 | ||
33 | # The .c files use __attribute__. | |
34 | if [get_compiler_info] { | |
35 | return -1 | |
36 | } | |
37 | if !$gcc_compiled { | |
38 | return 0 | |
39 | } | |
40 | ||
41 | standard_testfile dw2-inline-stepping.c dw2-inline-stepping.S | |
42 | ||
43 | set asm_file [standard_output_file $srcfile2] | |
44 | Dwarf::assemble $asm_file { | |
45 | global srcdir subdir srcfile srcfile2 | |
46 | declare_labels ranges_label lines_label foo_prog | |
47 | ||
48 | lassign [function_range main [list ${srcdir}/${subdir}/$srcfile]] \ | |
49 | main_start main_len | |
50 | set main_end "$main_start + $main_len" | |
51 | lassign [function_range bar [list ${srcdir}/${subdir}/$srcfile]] \ | |
52 | bar_start bar_len | |
53 | set bar_end "$bar_start + $bar_len" | |
54 | ||
55 | set call_line [gdb_get_line_number "main call foo"] | |
56 | ||
57 | cu {} { | |
58 | compile_unit { | |
59 | {language @DW_LANG_C} | |
60 | {name dw2-inline-stepping.c} | |
61 | {low_pc 0 addr} | |
62 | {stmt_list ${lines_label} DW_FORM_sec_offset} | |
63 | {ranges ${ranges_label} DW_FORM_sec_offset} | |
64 | } { | |
65 | subprogram { | |
66 | {external 1 flag} | |
67 | {name bar} | |
68 | {low_pc $bar_start addr} | |
69 | {high_pc "$bar_start + $bar_len" addr} | |
70 | } | |
71 | foo_prog: subprogram { | |
72 | {name foo} | |
73 | {inline 3 data1} | |
74 | } | |
75 | subprogram { | |
76 | {external 1 flag} | |
77 | {name main} | |
78 | {low_pc $main_start addr} | |
79 | {high_pc "$main_start + $main_len" addr} | |
80 | } { | |
81 | inlined_subroutine { | |
82 | {abstract_origin %$foo_prog} | |
83 | {low_pc main_label2 addr} | |
84 | {high_pc main_label3 addr} | |
85 | {call_file 1 data1} | |
86 | {call_line $call_line data1} | |
87 | } | |
88 | } | |
89 | } | |
90 | } | |
91 | ||
92 | lines {version 2} lines_label { | |
93 | include_dir "${srcdir}/${subdir}" | |
94 | file_name "$srcfile" 1 | |
95 | ||
96 | program { | |
97 | {DW_LNE_set_address $main_start} | |
853772cc | 98 | {line [gdb_get_line_number "main prologue"]} |
3d92a3e3 AB |
99 | {DW_LNS_copy} |
100 | {DW_LNE_set_address main_label} | |
853772cc | 101 | {line [gdb_get_line_number "main set global_var"]} |
3d92a3e3 AB |
102 | {DW_LNS_copy} |
103 | {DW_LNE_set_address main_label2} | |
853772cc | 104 | {line [gdb_get_line_number "main call foo"]} |
3d92a3e3 AB |
105 | {DW_LNS_copy} |
106 | {DW_LNE_set_address main_label2} | |
853772cc | 107 | {line [gdb_get_line_number "foo call bar"]} |
3d92a3e3 AB |
108 | {DW_LNS_copy} |
109 | {DW_LNE_set_address $main_end} | |
110 | {DW_LNE_end_sequence} | |
111 | ||
112 | {DW_LNE_set_address $bar_start} | |
853772cc | 113 | {line [gdb_get_line_number "bar prologue"]} |
3d92a3e3 AB |
114 | {DW_LNS_copy} |
115 | {DW_LNE_set_address bar_label} | |
853772cc | 116 | {line [gdb_get_line_number "bar return global_var"]} |
3d92a3e3 AB |
117 | {DW_LNS_copy} |
118 | {DW_LNE_set_address $bar_end} | |
119 | {DW_LNE_end_sequence} | |
120 | } | |
121 | } | |
122 | ||
123 | ranges {is_64 [is_64_target]} { | |
124 | ranges_label: sequence { | |
125 | {range {${main_start}} ${main_end}} | |
126 | {range {${bar_start}} ${bar_end}} | |
127 | } | |
128 | } | |
129 | } | |
130 | ||
131 | if { [prepare_for_testing "failed to prepare" ${testfile} \ | |
132 | [list $srcfile $asm_file] {nodebug}] } { | |
133 | return -1 | |
134 | } | |
135 | ||
136 | if ![runto_main] { | |
137 | return -1 | |
138 | } | |
139 | ||
140 | set patterns [list "main call foo" \ | |
141 | "foo call bar" \ | |
142 | "bar return global_var"] | |
143 | foreach p $patterns { | |
144 | gdb_test "step" "/\\* $p \\*/" \ | |
145 | "step to '$p'" | |
146 | } |