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1 | # Copyright 2016 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 | # Test accessing "non-variable" variables, i.e., variables which are | |
17 | # optimized to a constant DWARF location expression and/or | |
18 | # partially/fully optimized out. | |
19 | ||
20 | load_lib dwarf.exp | |
21 | ||
22 | if {![dwarf2_support]} { return 0 } | |
23 | ||
24 | standard_testfile main.c nonvar-access-dw.S | |
25 | ||
26 | # Make some DWARF for the test. | |
27 | set asm_file [standard_output_file $srcfile2] | |
28 | ||
29 | Dwarf::assemble $asm_file { | |
30 | cu {} { | |
31 | compile_unit { | |
32 | {DW_AT_name main.c} | |
33 | } { | |
34 | declare_labels int_type_label short_type_label | |
22347e55 | 35 | declare_labels struct_s_label struct_t_label |
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36 | |
37 | int_type_label: base_type { | |
38 | {name "int"} | |
39 | {encoding @DW_ATE_signed} | |
40 | {byte_size 4 DW_FORM_sdata} | |
41 | } | |
42 | ||
43 | struct_s_label: structure_type { | |
44 | {name s} | |
45 | {byte_size 4 DW_FORM_sdata} | |
46 | } { | |
47 | member { | |
48 | {name a} | |
49 | {type :$int_type_label} | |
50 | {data_member_location 0 DW_FORM_udata} | |
51 | {bit_size 8 DW_FORM_udata} | |
52 | } | |
53 | member { | |
54 | {name b} | |
55 | {type :$int_type_label} | |
56 | {data_bit_offset 8 DW_FORM_udata} | |
57 | {bit_size 24 DW_FORM_udata} | |
58 | } | |
59 | } | |
60 | ||
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61 | struct_t_label: structure_type { |
62 | {name t} | |
63 | {byte_size 4 DW_FORM_sdata} | |
64 | } { | |
65 | member { | |
66 | {name a} | |
67 | {type :$int_type_label} | |
68 | {data_member_location 0 DW_FORM_udata} | |
69 | {bit_size 9 DW_FORM_udata} | |
70 | } | |
71 | member { | |
72 | {name b} | |
73 | {type :$int_type_label} | |
74 | {data_bit_offset 9 DW_FORM_udata} | |
75 | {bit_size 23 DW_FORM_udata} | |
76 | } | |
77 | } | |
78 | ||
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79 | DW_TAG_subprogram { |
80 | {name main} | |
81 | {DW_AT_external 1 flag} | |
82 | {low_pc [gdb_target_symbol main] DW_FORM_addr} | |
83 | {high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr} | |
84 | } { | |
85 | DW_TAG_variable { | |
86 | {name undef_int} | |
87 | {type :$int_type_label} | |
88 | } | |
89 | DW_TAG_variable { | |
90 | {name undef_s} | |
91 | {type :$struct_s_label} | |
92 | } | |
93 | DW_TAG_variable { | |
94 | {name def_s} | |
95 | {type :$struct_s_label} | |
96 | {location { | |
97 | const1u 0 | |
98 | stack_value | |
99 | bit_piece 8 0 | |
100 | const1s -1 | |
101 | stack_value | |
102 | bit_piece 24 0 | |
103 | } SPECIAL_expr} | |
104 | } | |
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105 | DW_TAG_variable { |
106 | {name def_t} | |
107 | {type :$struct_t_label} | |
108 | {location { | |
109 | const1u 0 | |
110 | stack_value | |
111 | bit_piece 9 0 | |
112 | const1s -1 | |
113 | stack_value | |
114 | bit_piece 23 0 | |
115 | } SPECIAL_expr} | |
116 | } | |
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117 | } |
118 | } | |
119 | } | |
120 | } | |
121 | ||
122 | if { [prepare_for_testing ${testfile}.exp ${testfile} \ | |
123 | [list $srcfile $asm_file] {nodebug}] } { | |
124 | return -1 | |
125 | } | |
126 | ||
127 | if ![runto_main] { | |
128 | return -1 | |
129 | } | |
130 | ||
131 | gdb_test "print def_s" " = \\{a = 0, b = -1\\}" | |
22347e55 | 132 | gdb_test "print def_t" " = \\{a = 0, b = -1\\}" |
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133 | gdb_test "print undef_int" " = <optimized out>" |
134 | gdb_test "print undef_s.a" " = <optimized out>" |