cosmopolitan/libc/str/getx86processormodel.c

40 lines
2.6 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/alg/bisect.h"
#include "libc/nexgen32e/x86info.h"
static int CmpX86ProcModelKey(const struct X86ProcessorModel *a,
const struct X86ProcessorModel *b) {
return a->key > b->key ? 1 : a->key < b->key ? -1 : 0;
}
/**
* Identifies microarchitecture of host processor.
*
* @param key can be kX86ProcessorModelKey for host info
* @see https://en.wikichip.org/wiki/intel/cpuid
* @see https://a4lg.com/tech/x86/database/x86-families-and-models.en.html
*/
const struct X86ProcessorModel *getx86processormodel(short key) {
return bisect(&(struct X86ProcessorModel){key}, kX86ProcessorModels,
kX86ProcessorModelCount, sizeof(struct X86ProcessorModel),
(void *)CmpX86ProcModelKey, NULL);
}