1 | /* glibc-hwcaps subdirectory test. x86_64 version. |
2 | Copyright (C) 2020-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stdio.h> |
20 | #include <support/check.h> |
21 | #include <sys/param.h> |
22 | #include <elf.h> |
23 | #include <get-isa-level.h> |
24 | |
25 | extern int marker2 (void); |
26 | extern int marker3 (void); |
27 | extern int marker4 (void); |
28 | |
29 | /* Return the x86-64-vN level, 1 for the baseline. */ |
30 | static int |
31 | compute_level (void) |
32 | { |
33 | const struct cpu_features *cpu_features = __get_cpu_features (); |
34 | unsigned int isa_level = get_isa_level (cpu_features); |
35 | |
36 | if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V2)) |
37 | return 1; |
38 | if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V3)) |
39 | return 2; |
40 | if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V4)) |
41 | return 3; |
42 | return 4; |
43 | } |
44 | |
45 | static int |
46 | do_test (void) |
47 | { |
48 | int level = compute_level (); |
49 | printf (format: "info: detected x86-64 micro-architecture level: %d\n" , level); |
50 | TEST_COMPARE (marker2 (), MIN (level, 2)); |
51 | TEST_COMPARE (marker3 (), MIN (level, 3)); |
52 | TEST_COMPARE (marker4 (), MIN (level, 4)); |
53 | return 0; |
54 | } |
55 | |
56 | #include <support/test-driver.c> |
57 | |