dc00968bc1
This was the last remaining GNU assembler code that was in its own independent source file, as opposed to being embedded in C code with GNU `__asm__ volatile` or MSVC `__asm` (which tends to be much easier to deal with in a modern build system). When the Quake 3 engine was originally written, this might have been an "expensive" function when written in portable C, but after 25 years of CPU development it's less likely to matter (and modern compilers might produce faster results from the C code anyway). Resolves: https://github.com/ioquake/ioq3/issues/778 Signed-off-by: Simon McVittie <smcv@debian.org>
420 lines
8.6 KiB
C
420 lines
8.6 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 __APPLE__ // 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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// 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 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(__x86_64__) || defined(_M_X64)
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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(__aarch64__) || defined(__ARM64__) || defined (_M_ARM64)
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#define ARCH_STRING "arm64"
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#define NO_VM_COMPILED
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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(__arm__) || defined(_M_ARM)
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#define ARCH_STRING "arm"
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#define NO_VM_COMPILED
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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(__APPLE__) || defined(__APPLE_CC__)
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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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#elif defined __aarch64__
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#define ARCH_STRING "arm64"
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#define Q3_LITTLE_ENDIAN
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#define NO_VM_COMPILED
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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(__x86_64__) || defined(__amd64__)
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# define ARCH_STRING "x86_64"
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#elif defined(__i386__)
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# define ARCH_STRING "x86"
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#elif defined(__aarch64__)
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# define ARCH_STRING "arm64"
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# define NO_VM_COMPILED
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#elif defined(__arm__)
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# define ARCH_STRING "arm"
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#elif defined(__powerpc64__) || defined(__ppc64__)
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# define ARCH_STRING "ppc64"
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#elif defined(__powerpc__) || defined(__ppc__)
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# define ARCH_STRING "ppc"
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#elif defined(__alpha__)
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# define ARCH_STRING "alpha"
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# define NO_VM_COMPILED
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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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#define NO_VM_COMPILED
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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 NO_VM_COMPILED
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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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//================================================================== EMSCRIPTEN ===
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#ifdef __EMSCRIPTEN__
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#define OS_STRING "emscripten"
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#define ID_INLINE inline
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#define PATH_SEP '/'
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#define ARCH_STRING "wasm32"
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#define NO_VM_COMPILED
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#define Q3_LITTLE_ENDIAN
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#define DLL_EXT ".wasm"
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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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#ifdef USE_ARCHLESS_FILENAMES
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#define ARCH_DLL_EXT DLL_EXT
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#else
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#define ARCH_DLL_EXT ARCH_STRING DLL_EXT
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#endif
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#endif
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