1/* Support for reading ISA level in /etc/ld.so.cache files written by
2 Linux ldconfig. x86 version.
3 Copyright (C) 2021 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <sys/platform/x86.h>
21
22/* Return true if the ISA level in ENTRY is compatible with CPU. */
23static inline bool
24dl_cache_hwcap_isa_level_compatible (struct file_entry_new *entry)
25{
26 const struct cpu_features *cpu_features = __get_cpu_features ();
27 unsigned int isa_level
28 = 1 << ((entry->hwcap >> 32) & DL_CACHE_HWCAP_ISA_LEVEL_MASK);
29
30 return (isa_level & cpu_features->isa_1) == isa_level;
31}
32