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78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/* x86 version of hardware capability information handling macros.
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Copyright (C) 2017-2020 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 _DL_HWCAP_H
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#define _DL_HWCAP_H
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#if IS_IN (ldconfig)
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/* Since ldconfig processes both i386 and x86-64 libraries, it needs
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to cover all platforms and hardware capabilities. */
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# define HWCAP_PLATFORMS_START 0
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# define HWCAP_PLATFORMS_COUNT 4
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# define HWCAP_START 0
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# define HWCAP_COUNT 3
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# define HWCAP_IMPORTANT \
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(HWCAP_X86_SSE2 | HWCAP_X86_64 | HWCAP_X86_AVX512_1)
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#elif defined __x86_64__
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/* For 64 bit, only cover x86-64 platforms and capabilities. */
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# define HWCAP_PLATFORMS_START 2
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# define HWCAP_PLATFORMS_COUNT 4
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# define HWCAP_START 1
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# define HWCAP_COUNT 3
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# define HWCAP_IMPORTANT (HWCAP_X86_64 | HWCAP_X86_AVX512_1)
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#else
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/* For 32 bit, only cover i586, i686 and SSE2. */
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# define HWCAP_PLATFORMS_START 0
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# define HWCAP_PLATFORMS_COUNT 2
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# define HWCAP_START 0
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# define HWCAP_COUNT 1
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# define HWCAP_IMPORTANT (HWCAP_X86_SSE2)
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#endif
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enum
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{
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HWCAP_X86_SSE2 = 1 << 0,
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HWCAP_X86_64 = 1 << 1,
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HWCAP_X86_AVX512_1 = 1 << 2
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};
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static inline const char *
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__attribute__ ((unused))
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_dl_hwcap_string (int idx)
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{
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return GLRO(dl_x86_hwcap_flags)[idx];
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};
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static inline int
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__attribute__ ((unused, always_inline))
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_dl_string_hwcap (const char *str)
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{
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int i;
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for (i = HWCAP_START; i < HWCAP_COUNT; i++)
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{
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if (strcmp (str, GLRO(dl_x86_hwcap_flags)[i]) == 0)
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return i;
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}
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return -1;
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};
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(type, word) -1
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#endif /* dl-hwcap.h */
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