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581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/* Data structure for x86 CPU features.
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This file is part of the GNU C Library.
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Copyright (C) 2008-2022 Free Software Foundation, Inc.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_PLATFORM_X86_H
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#define _SYS_PLATFORM_X86_H
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#include <features.h>
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#include <stdbool.h>
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#include <bits/platform/x86.h>
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__BEGIN_DECLS
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/* Get a pointer to the CPU feature structure. */
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extern const struct cpuid_feature *__x86_get_cpuid_feature_leaf (unsigned int)
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__attribute__ ((pure));
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static __inline__ _Bool
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x86_cpu_present (unsigned int __index)
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{
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const struct cpuid_feature *__ptr = __x86_get_cpuid_feature_leaf
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(__index / (8 * sizeof (unsigned int) * 4));
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unsigned int __reg
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= __index & (8 * sizeof (unsigned int) * 4 - 1);
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unsigned int __bit = __reg & (8 * sizeof (unsigned int) - 1);
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__reg /= 8 * sizeof (unsigned int);
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return __ptr->cpuid_array[__reg] & (1 << __bit);
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}
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static __inline__ _Bool
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x86_cpu_active (unsigned int __index)
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{
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const struct cpuid_feature *__ptr = __x86_get_cpuid_feature_leaf
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(__index / (8 * sizeof (unsigned int) * 4));
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unsigned int __reg
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= __index & (8 * sizeof (unsigned int) * 4 - 1);
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unsigned int __bit = __reg & (8 * sizeof (unsigned int) - 1);
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__reg /= 8 * sizeof (unsigned int);
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return __ptr->active_array[__reg] & (1 << __bit);
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}
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/* CPU_FEATURE_PRESENT evaluates to true if CPU supports the feature. */
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#define CPU_FEATURE_PRESENT(name) x86_cpu_present (x86_cpu_##name)
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/* CPU_FEATURE_ACTIVE evaluates to true if the feature is active. */
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#define CPU_FEATURE_ACTIVE(name) x86_cpu_active (x86_cpu_##name)
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__END_DECLS
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#endif /* _SYS_PLATFORM_X86_H */
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