1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include <string.h>
12#include "x86.h"
13
14struct cpuid_vendors {
15  char vendor_string[12];
16  vpx_cpu_t vendor_id;
17};
18
19static struct cpuid_vendors cpuid_vendor_list[VPX_CPU_LAST] = {
20  { "AuthenticAMD", VPX_CPU_AMD           },
21  { "AMDisbetter!", VPX_CPU_AMD_OLD       },
22  { "CentaurHauls", VPX_CPU_CENTAUR       },
23  { "CyrixInstead", VPX_CPU_CYRIX         },
24  { "GenuineIntel", VPX_CPU_INTEL         },
25  { "NexGenDriven", VPX_CPU_NEXGEN        },
26  { "Geode by NSC", VPX_CPU_NSC           },
27  { "RiseRiseRise", VPX_CPU_RISE          },
28  { "SiS SiS SiS ", VPX_CPU_SIS           },
29  { "GenuineTMx86", VPX_CPU_TRANSMETA     },
30  { "TransmetaCPU", VPX_CPU_TRANSMETA_OLD },
31  { "UMC UMC UMC ", VPX_CPU_UMC           },
32  { "VIA VIA VIA ", VPX_CPU_VIA           },
33};
34
35vpx_cpu_t vpx_x86_vendor(void) {
36  unsigned int reg_eax;
37  unsigned int vs[3];
38  int i;
39
40  /* Get the Vendor String from the CPU */
41  cpuid(0, reg_eax, vs[0], vs[2], vs[1]);
42
43  for (i = 0; i < VPX_CPU_LAST; i++) {
44    if (strncmp((const char *)vs, cpuid_vendor_list[i].vendor_string, 12) == 0)
45      return (cpuid_vendor_list[i].vendor_id);
46  }
47
48  return VPX_CPU_UNKNOWN;
49}
50