michael@0: /*
michael@0:  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0:  *
michael@0:  *  Use of this source code is governed by a BSD-style license
michael@0:  *  that can be found in the LICENSE file in the root of the source
michael@0:  *  tree. An additional intellectual property rights grant can be found
michael@0:  *  in the file PATENTS.  All contributing project authors may
michael@0:  *  be found in the AUTHORS file in the root of the source tree.
michael@0:  */
michael@0: 
michael@0: #include <string.h>
michael@0: #include "x86.h"
michael@0: 
michael@0: struct cpuid_vendors {
michael@0:   char vendor_string[12];
michael@0:   vpx_cpu_t vendor_id;
michael@0: };
michael@0: 
michael@0: static struct cpuid_vendors cpuid_vendor_list[VPX_CPU_LAST] = {
michael@0:   { "AuthenticAMD", VPX_CPU_AMD           },
michael@0:   { "AMDisbetter!", VPX_CPU_AMD_OLD       },
michael@0:   { "CentaurHauls", VPX_CPU_CENTAUR       },
michael@0:   { "CyrixInstead", VPX_CPU_CYRIX         },
michael@0:   { "GenuineIntel", VPX_CPU_INTEL         },
michael@0:   { "NexGenDriven", VPX_CPU_NEXGEN        },
michael@0:   { "Geode by NSC", VPX_CPU_NSC           },
michael@0:   { "RiseRiseRise", VPX_CPU_RISE          },
michael@0:   { "SiS SiS SiS ", VPX_CPU_SIS           },
michael@0:   { "GenuineTMx86", VPX_CPU_TRANSMETA     },
michael@0:   { "TransmetaCPU", VPX_CPU_TRANSMETA_OLD },
michael@0:   { "UMC UMC UMC ", VPX_CPU_UMC           },
michael@0:   { "VIA VIA VIA ", VPX_CPU_VIA           },
michael@0: };
michael@0: 
michael@0: vpx_cpu_t vpx_x86_vendor(void) {
michael@0:   unsigned int reg_eax;
michael@0:   unsigned int vs[3];
michael@0:   int i;
michael@0: 
michael@0:   /* Get the Vendor String from the CPU */
michael@0:   cpuid(0, reg_eax, vs[0], vs[2], vs[1]);
michael@0: 
michael@0:   for (i = 0; i < VPX_CPU_LAST; i++) {
michael@0:     if (strncmp((const char *)vs, cpuid_vendor_list[i].vendor_string, 12) == 0)
michael@0:       return (cpuid_vendor_list[i].vendor_id);
michael@0:   }
michael@0: 
michael@0:   return VPX_CPU_UNKNOWN;
michael@0: }