| 1 | /* Support for reading ISA level in /etc/ld.so.cache files written by |
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| 2 | Linux ldconfig. x86 version. |
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| 3 | Copyright (C) 2021-2022 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include <sys/platform/x86.h> |
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| 21 | |
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| 22 | /* Return true if the ISA level in ENTRY is compatible with CPU. */ |
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| 23 | static inline bool |
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| 24 | dl_cache_hwcap_isa_level_compatible (struct file_entry_new *entry) |
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| 25 | { |
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| 26 | const struct cpu_features *cpu_features = __get_cpu_features (); |
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| 27 | unsigned int isa_level |
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| 28 | = 1 << ((entry->hwcap >> 32) & DL_CACHE_HWCAP_ISA_LEVEL_MASK); |
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| 29 | |
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| 30 | return (isa_level & cpu_features->isa_1) == isa_level; |
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| 31 | } |
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| 32 | |
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