mirror of
https://github.com/OpenArena/gamecode
synced 2026-08-20 18:23:03 -04:00
3f7769b241
GNU platforms (Linux, kFreeBSD, Hurd) have endian.h to determine
endianness, so all architectures except x86_64 are in fact treated
identically, except that their ARCH_STRING is different.
The ARCH_STRING must always be identical to the ARCH from the Makefile,
otherwise the engine will not find its cgame, game and ui plugins
under their expected names and startup will fail. If we pass it in
from the Makefile, then an identical value is guaranteed, and we can
get rid of an increasingly long list of defined(__some_cpu__) tests.
The game-code does not actually use ARCH_STRING, but I've kept it
in order to be consistent with the ioquake3 engine.
On non-Linux platforms we only support a few architectures anyway,
so keeping the list up to date is less of a burden; *BSD porters
could probably use the same technique to get support for lots of
architectures with little effort, but I have not done that here,
because I cannot test it.
Windows must continue to support preprocessor-based architecture tests
in any case, so that the MSVC solutions (which do not use the Makefile)
can continue to work. However, Windows only runs on a few CPU families,
so this shouldn't be a significant burden in practice.
When cross-compiling, the tools are compiled for the build architecture
(COMPILE_PLATFORM, COMPILE_ARCH) rather than the host architecture
(PLATFORM, ARCH), so define ARCH_STRING to COMPILE_ARCH on a GNU
COMPILE_PLATFORM.
Originally sent to ioquake3 as commit
2a71948f21.
Signed-off-by: Simon McVittie <smcv@debian.org>
349 lines
7 KiB
C
349 lines
7 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#ifndef __Q_PLATFORM_H
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#define __Q_PLATFORM_H
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// this is for determining if we have an asm version of a C function
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#ifdef Q3_VM
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#define id386 0
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#define idppc 0
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#define idppc_altivec 0
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#else
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#if (defined _M_IX86 || defined __i386__) && !defined(C_ONLY)
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#define id386 1
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#else
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#define id386 0
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#endif
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#if (defined(powerc) || defined(powerpc) || defined(ppc) || \
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defined(__ppc) || defined(__ppc__)) && !defined(C_ONLY)
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#define idppc 1
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#if defined(__VEC__)
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#define idppc_altivec 1
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#ifdef MACOS_X // Apple's GCC does this differently than the FSF.
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#define VECCONST_UINT8(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \
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(vector unsigned char) (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p)
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#else
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#define VECCONST_UINT8(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) \
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(vector unsigned char) {a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p}
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#endif
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#else
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#define idppc_altivec 0
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#endif
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#else
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#define idppc 0
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#define idppc_altivec 0
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#endif
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#endif
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#ifndef __ASM_I386__ // don't include the C bits if included from qasm.h
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// for windows fastcall option
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#define QDECL
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//================================================================= WIN32 ===
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#ifdef __MINGW32__
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#undef QDECL
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#define QDECL __cdecl
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#if defined( _MSC_VER )
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#define OS_STRING "win_msvc"
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#elif defined __MINGW32__
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#define OS_STRING "win_mingw"
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#endif
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#define ID_INLINE __inline
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#define PATH_SEP '\\'
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#if defined( _M_IX86 ) || defined( __i386__ )
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#define ARCH_STRING "x86"
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#elif defined _M_ALPHA
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#define ARCH_STRING "AXP"
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#endif
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#define Q3_LITTLE_ENDIAN
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#define DLL_EXT ".dll"
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#endif
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//KK-OAX, This is a little hack to be able to build dll's for debugging under Visual Studio
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//Simple copy/paste/rename of the #ifdef __MINGW32__
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#ifdef VSTUDIO
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#undef QDECL
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#define QDECL __cdecl
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#if defined( _MSC_VER )
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#define OS_STRING "win_msvc"
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#elif defined __MINGW32__
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#define OS_STRING "win_mingw"
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#endif
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#define ID_INLINE __inline
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#define PATH_SEP '\\'
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#if defined( _M_IX86 ) || defined( __i386__ )
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#define ARCH_STRING "x86"
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#elif defined _M_ALPHA
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#define ARCH_STRING "AXP"
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#endif
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#define Q3_LITTLE_ENDIAN
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#define DLL_EXT ".dll"
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#endif
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//============================================================== MAC OS X ===
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#if defined(MACOS_X) || defined(__APPLE_CC__)
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// make sure this is defined, just for sanity's sake...
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#ifndef MACOS_X
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#define MACOS_X
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#endif
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#define OS_STRING "macosx"
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#define ID_INLINE inline
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#define PATH_SEP '/'
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#ifdef __ppc__
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#define ARCH_STRING "ppc"
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#define Q3_BIG_ENDIAN
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#elif defined __i386__
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#define ARCH_STRING "i386"
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#define Q3_LITTLE_ENDIAN
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#elif defined __x86_64__
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#define ARCH_STRING "x86_64"
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#define Q3_LITTLE_ENDIAN
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#endif
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#define DLL_EXT ".dylib"
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#endif
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//================================================================= LINUX ===
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#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__GNU__)
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#include <endian.h>
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#if defined(__linux__)
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#define OS_STRING "linux"
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#elif defined(__FreeBSD_kernel__)
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#define OS_STRING "kFreeBSD"
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#else
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#define OS_STRING "GNU"
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#endif
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#define ID_INLINE inline
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#define PATH_SEP '/'
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#if !defined(ARCH_STRING)
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# error ARCH_STRING should be defined by the Makefile
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#endif
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#if __FLOAT_WORD_ORDER == __BIG_ENDIAN
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#define Q3_BIG_ENDIAN
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#else
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#define Q3_LITTLE_ENDIAN
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#endif
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#define DLL_EXT ".so"
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#endif
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//=================================================================== BSD ===
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#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
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#include <sys/types.h>
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#include <machine/endian.h>
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#ifndef __BSD__
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#define __BSD__
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#endif
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#if defined(__FreeBSD__)
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#define OS_STRING "freebsd"
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#elif defined(__OpenBSD__)
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#define OS_STRING "openbsd"
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#elif defined(__NetBSD__)
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#define OS_STRING "netbsd"
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#endif
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#define ID_INLINE inline
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#define PATH_SEP '/'
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#ifdef __i386__
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#define ARCH_STRING "i386"
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#elif defined __axp__
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#define ARCH_STRING "alpha"
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#endif
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#if BYTE_ORDER == BIG_ENDIAN
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#define Q3_BIG_ENDIAN
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#else
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#define Q3_LITTLE_ENDIAN
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#endif
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#define DLL_EXT ".so"
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#endif
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//================================================================= SUNOS ===
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#ifdef __sun
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#include <stdint.h>
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#include <sys/byteorder.h>
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#define OS_STRING "solaris"
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#define ID_INLINE inline
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#define PATH_SEP '/'
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#ifdef __i386__
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#define ARCH_STRING "i386"
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#elif defined __sparc
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#define ARCH_STRING "sparc"
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#endif
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#if defined( _BIG_ENDIAN )
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#define Q3_BIG_ENDIAN
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#elif defined( _LITTLE_ENDIAN )
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#define Q3_LITTLE_ENDIAN
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#endif
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#define DLL_EXT ".so"
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#endif
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//================================================================== IRIX ===
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#ifdef __sgi
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#define OS_STRING "irix"
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#define ID_INLINE __inline
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#define PATH_SEP '/'
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#define ARCH_STRING "mips"
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#define Q3_BIG_ENDIAN // SGI's MIPS are always big endian
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#define DLL_EXT ".so"
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#endif
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//================================================================== Q3VM ===
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#ifdef Q3_VM
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#define OS_STRING "q3vm"
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#define ID_INLINE
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#define PATH_SEP '/'
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#define ARCH_STRING "bytecode"
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#define DLL_EXT ".qvm"
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#endif
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//===========================================================================
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//catch missing defines in above blocks
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#if !defined( OS_STRING )
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#error "Operating system not supported"
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#endif
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#if !defined( ARCH_STRING )
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#error "Architecture not supported"
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#endif
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#ifndef ID_INLINE
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#error "ID_INLINE not defined"
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#endif
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#ifndef PATH_SEP
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#error "PATH_SEP not defined"
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#endif
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#ifndef DLL_EXT
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#error "DLL_EXT not defined"
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#endif
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//endianness
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short ShortSwap (short l);
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int LongSwap (int l);
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float FloatSwap (const float *f);
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#if defined( Q3_BIG_ENDIAN ) && defined( Q3_LITTLE_ENDIAN )
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#error "Endianness defined as both big and little"
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#elif defined( Q3_BIG_ENDIAN )
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#define LittleShort(x) ShortSwap(x)
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#define LittleLong(x) LongSwap(x)
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#define LittleFloat(x) FloatSwap(&x)
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#define BigShort
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#define BigLong
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#define BigFloat
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#elif defined( Q3_LITTLE_ENDIAN )
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#define LittleShort
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#define LittleLong
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#define LittleFloat
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#define BigShort(x) ShortSwap(x)
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#define BigLong(x) LongSwap(x)
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#define BigFloat(x) FloatSwap(&x)
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#elif defined( Q3_VM )
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#define LittleShort
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#define LittleLong
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#define LittleFloat
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#define BigShort
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#define BigLong
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#define BigFloat
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#else
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#error "Endianness not defined"
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#endif
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//platform string
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#ifdef NDEBUG
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#define PLATFORM_STRING OS_STRING "-" ARCH_STRING
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#else
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#define PLATFORM_STRING OS_STRING "-" ARCH_STRING "-debug"
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#endif
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#endif
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#endif
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