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b811d2c2 | 1 | # Copyright 2015-2020 Free Software Foundation, Inc. |
5f3ff4f8 JK |
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 | load_lib dwarf.exp | |
16 | ||
17 | # Test GDB does not internal error on DWARF register number -1 which is invalid | |
18 | # in DWARF. clang-3.5.0-9.fc22.x86_64 produced it inside DW_AT_location. | |
19 | ||
20 | # This test can only be run on targets which support DWARF-2 and use gas. | |
21 | if {![dwarf2_support]} { | |
22 | return 0 | |
23 | } | |
24 | ||
25 | standard_testfile .S main.c | |
26 | ||
27 | # Make some DWARF for the test. | |
28 | set asm_file [standard_output_file $srcfile] | |
29 | Dwarf::assemble $asm_file { | |
30 | cu {} { | |
31 | compile_unit { | |
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32 | {low_pc [gdb_target_symbol main] DW_FORM_addr} |
33 | {high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr} | |
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34 | } { |
35 | declare_labels integer_label | |
36 | ||
37 | integer_label: DW_TAG_base_type { | |
38 | {DW_AT_byte_size 4 DW_FORM_sdata} | |
39 | {DW_AT_encoding @DW_ATE_signed} | |
40 | {DW_AT_name integer} | |
41 | } | |
42 | ||
43 | DW_TAG_subprogram { | |
44 | {name main} | |
45 | {DW_AT_external 1 flag} | |
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46 | {low_pc [gdb_target_symbol main] DW_FORM_addr} |
47 | {high_pc [gdb_target_symbol main]+0x10000 DW_FORM_addr} | |
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48 | } { |
49 | DW_TAG_variable { | |
50 | {DW_AT_name bregx} | |
51 | {DW_AT_type :$integer_label} | |
52 | {DW_AT_external 1 flag} | |
53 | {DW_AT_location { | |
54 | DW_OP_bregx 0xffffffff 0 | |
55 | } SPECIAL_expr} | |
56 | } | |
57 | } | |
58 | } | |
59 | } | |
60 | } | |
61 | ||
5b362f04 | 62 | if { [prepare_for_testing "failed to prepare" ${testfile} \ |
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63 | [list $srcfile2 $asm_file] {nodebug}] } { |
64 | return -1 | |
65 | } | |
66 | ||
67 | runto_main | |
68 | ||
69 | # Variable 'bregx' needs to be inside main as for global symbols GDB does not | |
70 | # support non-trivial DW_AT_location. Former GDB printed internal error here. | |
71 | gdb_test "p bregx" |