| 1 | /* Get CPUID feature leaf. |
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| 2 | Copyright (C) 2021-2024 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <assert.h> |
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| 19 | #include <tcb-offsets.h> |
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| 20 | #include <ldsodefs.h> |
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| 21 | |
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| 22 | const struct cpuid_feature * |
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| 23 | __x86_get_cpuid_feature_leaf (unsigned int leaf) |
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| 24 | { |
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| 25 | static const struct cpuid_feature feature = {}; |
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| 26 | if (leaf < CPUID_INDEX_MAX) |
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| 27 | return ((const struct cpuid_feature *) |
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| 28 | &GLRO(dl_x86_cpu_features).features[leaf]); |
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| 29 | else |
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| 30 | return &feature; |
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| 31 | } |
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| 32 | |
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