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. */ 23 static inline bool dl_cache_hwcap_isa_level_compatible(struct file_entry_new * entry)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