Mercurial > sdl-ios-xcode
view include/SDL_byteorder.h @ 881:9eb85a211abd
Date: Tue, 30 Mar 2004 18:18:13 -0600
From: Tyler Montbriand
Subject: [SDL] Detecting Opteron CPU features
I can now get SDL_cpuinfo.c to detect the AMD Opteron's RDTSC, MMX, MMXEXT,
3DNOW, 3DNOWEXT, SSE, and SSE2 instruction set extensions under Linux. It
took one #ifdef'ed block of new asm code to account for the 64-bit flags
register, but the other two blocks worked fine without modification, just
needed to modify the #ifdef's a bit.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 11 Apr 2004 19:49:34 +0000 |
parents | b8d311d90021 |
children | cfb9518670f4 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Macros for determining the byte-order of this platform */ #ifndef _SDL_byteorder_h #define _SDL_byteorder_h /* The two types of endianness */ #define SDL_LIL_ENDIAN 1234 #define SDL_BIG_ENDIAN 4321 /* Pardon the mess, I'm trying to determine the endianness of this host. I'm doing it by preprocessor defines rather than some sort of configure script so that application code can use this too. The "right" way would be to dynamically generate this file on install, but that's a lot of work. */ #if defined(__i386__) || defined(__ia64__) || defined(WIN32) || \ (defined(__alpha__) || defined(__alpha)) || \ defined(__arm__) || \ (defined(__mips__) && defined(__MIPSEL__)) || \ defined(__SYMBIAN32__) || \ defined(__x86_64__) || \ defined(__LITTLE_ENDIAN__) #define SDL_BYTEORDER SDL_LIL_ENDIAN #else #define SDL_BYTEORDER SDL_BIG_ENDIAN #endif #endif /* _SDL_byteorder_h */