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2a71948f21
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 one remaining quirk is that we test __x86_64__ to determine whether to define idx64; I've kept that, but separated it from the ARCH_STRING. 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.
384 lines
7.6 KiB
C
384 lines
7.6 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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#define idx64 0
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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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#define idsparc 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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#if defined(__sparc__) && !defined(C_ONLY)
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#define idsparc 1
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#else
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#define idsparc 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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#define QCALL
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//================================================================= WIN64/32 ===
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#if defined(_WIN64) || defined(__WIN64__)
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#undef idx64
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#define idx64 1
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#undef QDECL
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#define QDECL __cdecl
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#undef QCALL
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#define QCALL __stdcall
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#if defined( _MSC_VER )
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#define OS_STRING "win_msvc64"
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#elif defined __MINGW64__
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#define OS_STRING "win_mingw64"
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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( __WIN64__ )
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#define ARCH_STRING "x86_64"
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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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#elif defined(_WIN32) || defined(__WIN32__)
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#undef QDECL
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#define QDECL __cdecl
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#undef QCALL
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#define QCALL __stdcall
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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 "x86"
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#define Q3_LITTLE_ENDIAN
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#elif defined __x86_64__
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#undef idx64
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#define idx64 1
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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 defined __x86_64__
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#undef idx64
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#define idx64 1
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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 "x86"
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#elif defined __amd64__
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#undef idx64
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#define idx64 1
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#define ARCH_STRING "x86_64"
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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 "x86"
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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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void CopyShortSwap (void *dest, void *src);
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void CopyLongSwap (void *dest, void *src);
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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 CopyLittleShort(dest, src) CopyShortSwap(dest, src)
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#define CopyLittleLong(dest, src) CopyLongSwap(dest, src)
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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 CopyLittleShort(dest, src) Com_Memcpy(dest, src, 2)
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#define CopyLittleLong(dest, src) Com_Memcpy(dest, src, 4)
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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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