path: root/sysdeps/x86/cacheinfo.c

/* x86_64 cache info.
   Copyright (C) 2003-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <cpuid.h>
#include <init-arch.h>

#define is_intel GLRO(dl_x86_cpu_features).kind == arch_kind_intel
#define is_amd GLRO(dl_x86_cpu_features).kind == arch_kind_amd
#define max_cpuid GLRO(dl_x86_cpu_features).max_cpuid

static const struct intel_02_cache_info
{
  unsigned char idx;
  unsigned char assoc;
  unsigned char linesize;
  unsigned char rel_name;
  unsigned int size;
} intel_02_known [] =
  {
#define M(sc) ((sc) - _SC_LEVEL1_ICACHE_SIZE)
    { 0x06,  4, 32, M(_SC_LEVEL1_ICACHE_SIZE),    8192 },
    { 0x08,  4, 32, M(_SC_LEVEL1_ICACHE_SIZE),   16384 },
    { 0x09,  4, 32, M(_SC_LEVEL1_ICACHE_SIZE),   32768 },
    { 0x0a,  2, 32, M(_SC_LEVEL1_DCACHE_SIZE),    8192 },
    { 0x0c,  4, 32, M(_SC_LEVEL1_DCACHE_SIZE),   16384 },
    { 0x0d,  4, 64, M(_SC_LEVEL1_DCACHE_SIZE),   16384 },
    { 0x0e,  6, 64, M(_SC_LEVEL1_DCACHE_SIZE),   24576 },
    { 0x21,  8, 64, M(_SC_LEVEL2_CACHE_SIZE),   262144 },
    { 0x22,  4, 64, M(_SC_LEVEL3_CACHE_SIZE),   524288 },
    { 0x23,  8, 64, M(_SC_LEVEL3_CACHE_SIZE),  1048576 },
    { 0x25,  8, 64, M(_SC_LEVEL3_CACHE_SIZE),  2097152 },
    { 0x29,  8, 64, M(_SC_LEVEL3_CACHE_SIZE),  4194304 },
    { 0x2c,  8, 64, M(_SC_LEVEL1_DCACHE_SIZE),   32768 },
    { 0x30,  8, 64, M(_SC_LEVEL1_ICACHE_SIZE),   32768 },