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4a94e368 | 1 | # Copyright 2015-2022 Free Software Foundation, Inc. |
51547df6 MS |
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 | standard_testfile | |
17 | ||
18 | if { ![istarget i?86-*-*] && ![istarget x86_64-*-* ] } { | |
19 | unsupported "skipping x86 PKEYS tests." | |
20 | return | |
21 | } | |
22 | ||
a561456f TV |
23 | set default_pkru_re 0x0 |
24 | if { [istarget *-*-linux*] } { | |
25 | # Starting with v4.9, the linux kernel contains commit acd547b29880 | |
26 | # ("x86/pkeys: Default to a restrictive init PKRU"), which sets the | |
27 | # pkru register to 0x55555554 by default. | |
28 | set default_pkru_re (0x0|0x55555554) | |
29 | } | |
30 | ||
31 | ||
51547df6 MS |
32 | set comp_flags "-I${srcdir}/../nat/" |
33 | ||
34 | if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \ | |
35 | [list debug additional_flags=${comp_flags}]] } { | |
1512d3b7 | 36 | untested "failed to compile x86 PKEYS test." |
51547df6 MS |
37 | return -1 |
38 | } | |
39 | ||
40 | if ![runto_main] { | |
51547df6 MS |
41 | return -1 |
42 | } | |
43 | ||
44 | set supports_pkru 0 | |
45 | set test "probe PKRU support" | |
46 | gdb_test_multiple "print have_pkru()" $test { | |
47 | -re ".. = 1\r\n$gdb_prompt $" { | |
48 | pass $test | |
49 | set supports_pkru 1 | |
50 | } | |
25dcbff6 PA |
51 | -re ".. = 0\r\n$gdb_prompt $" { |
52 | pass $test | |
53 | } | |
51547df6 MS |
54 | } |
55 | ||
56 | if { !$supports_pkru } { | |
57 | unsupported "processor does not support protection key feature." | |
58 | return | |
59 | } | |
60 | ||
61 | # Test pkru register at startup | |
a561456f | 62 | gdb_test "print /x \$pkru" "= $default_pkru_re" "pkru register" |
51547df6 MS |
63 | |
64 | # Read values from pseudo registers. | |
65 | gdb_breakpoint [ gdb_get_line_number "break here 1" ] | |
66 | gdb_continue_to_breakpoint "break here 1" ".*break here 1.*" | |
67 | ||
68 | gdb_test "info register pkru" ".*pkru.*0x12345678.*" "read pkru register" | |
69 | gdb_test "print /x \$pkru = 0x44444444" "= 0x44444444" "set pkru value" | |
70 | gdb_test "info register pkru" ".*pkru.*0x44444444.*" "read value after setting value" | |
71 | ||
72 | gdb_breakpoint [ gdb_get_line_number "break here 2" ] | |
73 | gdb_continue_to_breakpoint "break here 2" ".*break here 2.*" | |
74 | ||
75 | gdb_test "print /x rd_value" "= 0x44444444" "variable after reading pkru" |