godot/thirdparty/libtheora/x86/x86cpu.c

/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE.   *
 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
 *                                                                  *
 * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009                *
 * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
 *                                                                  *
 ********************************************************************

 CPU capability detection for x86 processors.
  Originally written by Rudolf Marek.

 function:
  last mod: $Id$

 ********************************************************************/

#include "x86cpu.h"

#if !defined(OC_X86_ASM)
ogg_uint32_t oc_cpu_flags_get(void){
  return 0;
}
#else
# if defined(__amd64__)||defined(__x86_64__)
/*On x86-64, gcc seems to be able to figure out how to save %rbx for us when
   compiling with -fPIC.*/
#define cpuid(_op,_eax,_ebx,_ecx,_edx) …
# else
/*On x86-32, not so much.*/
#define cpuid …
# endif

static ogg_uint32_t oc_parse_intel_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){ … }

static ogg_uint32_t oc_parse_amd_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){ … }

ogg_uint32_t oc_cpu_flags_get(void){ … }
#endif