mirror of
https://github.com/dhewm/dhewm3-sdk.git
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11f881c375
Workaround for MCST-LCC compiler < 1.28 version mcst-lcc < 1.28 does not support __builtin_alloca_with_align() Ref: http://mcst.ru/lcc
290 lines
8.2 KiB
C
290 lines
8.2 KiB
C
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __PLATFORM__
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#define __PLATFORM__
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#include "config.h"
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#include "framework/BuildDefines.h"
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#ifdef _WIN32
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#include <malloc.h> // _alloca()
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#endif
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// NOTE: By default Win32 uses a 1MB stack. Doom3 1.3.1 uses 4MB (probably set after compiling with EDITBIN /STACK
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// dhewm3 now uses a 8MB stack, set with a linker flag in CMakeLists.txt (/STACK:8388608 for MSVC, -Wl,--stack,8388608 for mingw)
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// Linux has a 8MB stack by default, and so does macOS, at least for the main thread
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// anyway, a 2MB limit alloca should be safe even when using it multiple times in the same function
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#define ID_MAX_ALLOCA_SIZE 2097152 // 2MB
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/*
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===============================================================================
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Non-portable system services.
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===============================================================================
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*/
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// AROS
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#if defined(__AROS__)
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#define _alloca alloca
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#define _alloca16( x ) ((void *)((((uintptr_t)alloca( (x)+15 )) + 15) & ~15))
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#ifdef GAME_DLL
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#define ID_GAME_API __attribute__((visibility ("default")))
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#else
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#define ID_GAME_API
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#endif
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#define ALIGN16( x ) x __attribute__ ((aligned (16)))
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#define PACKED __attribute__((packed))
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#define PATHSEPERATOR_STR "/"
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#define PATHSEPERATOR_CHAR '/'
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#define __cdecl
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#define ASSERT assert
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#define ID_INLINE inline
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#define ID_STATIC_TEMPLATE
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#define assertmem( x, y )
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#endif
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// Win32
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#if defined(WIN32) || defined(_WIN32)
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#ifdef __MINGW32__
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#undef _alloca // in mingw _alloca is a #define
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#define _alloca16( x ) ( (assert((x)<ID_MAX_ALLOCA_SIZE)), __builtin_alloca_with_align( (x), 16*8 ) )
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#define _alloca( x ) ( (assert((x)<ID_MAX_ALLOCA_SIZE)), __builtin_alloca( (x) ) )
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#else
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#define _alloca16( x ) ( (void *) ( (assert((x)<ID_MAX_ALLOCA_SIZE)), ((((uintptr_t)_alloca( (x)+15 )) + 15) & ~15) ) )
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#define _alloca( x ) ( (void *) ( (assert((x)<ID_MAX_ALLOCA_SIZE)), _alloca( (x) ) ) )
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#endif
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#define PATHSEPERATOR_STR "\\"
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#define PATHSEPERATOR_CHAR '\\'
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#ifdef _MSC_VER
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#ifdef GAME_DLL
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#define ID_GAME_API __declspec(dllexport)
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#else
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#define ID_GAME_API
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#endif
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#define ALIGN16( x ) __declspec(align(16)) x
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#define PACKED
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#define ID_INLINE __forceinline
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// DG: alternative to forced inlining of ID_INLINE for functions that do alloca()
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// and are called in a loop so inlining them might cause stack overflow
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#define ID_MAYBE_INLINE __inline
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#define ID_STATIC_TEMPLATE static
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#define assertmem( x, y ) assert( _CrtIsValidPointer( x, y, true ) )
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#else
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#ifdef GAME_DLL
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#define ID_GAME_API __attribute__((visibility ("default")))
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#else
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#define ID_GAME_API
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#endif
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#define ALIGN16( x ) x __attribute__ ((aligned (16)))
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#define PACKED __attribute__((packed))
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#define ID_INLINE inline
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#define ID_STATIC_TEMPLATE
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#define assertmem( x, y )
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#endif
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#endif
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// Setting D3_ARCH for VisualC++ from CMake doesn't work when using VS integrated CMake
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// so set it in code instead
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#ifdef _MSC_VER
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#ifdef D3_ARCH
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#undef D3_ARCH
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#endif // D3_ARCH
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#ifdef _M_X64
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// this matches AMD64 and ARM64EC (but not regular ARM64), but they're supposed to be binary-compatible somehow, so whatever
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#define D3_ARCH "x86_64"
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#elif defined(_M_ARM64)
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#define D3_ARCH "arm64"
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#elif defined(_M_ARM)
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#define D3_ARCH "arm"
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#elif defined(_M_IX86)
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#define D3_ARCH "x86"
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#else
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// if you're not targeting one of the aforementioned architectures,
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// check https://learn.microsoft.com/en-us/cpp/preprocessor/predefined-macros
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// to find out how to detect yours and add it here - and please send a patch :)
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#error "Unknown CPU architecture!"
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// (for a quick and dirty solution, comment out the previous line, but keep in mind
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// that savegames may not be compatible with other builds of dhewm3)
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#define D3_ARCH "UNKNOWN"
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#endif // _M_X64 etc
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#endif // _MSC_VER
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// Mac OSX
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#if defined(MACOS_X) || defined(__APPLE__)
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#ifdef GAME_DLL
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#define ID_GAME_API __attribute__((visibility ("default")))
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#else
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#define ID_GAME_API
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#endif
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#define ALIGN16( x ) x __attribute__ ((aligned (16)))
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#define PACKED __attribute__((packed))
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#define _alloca alloca
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#define _alloca16( x ) ((void *)((((uintptr_t)alloca( (x)+15 )) + 15) & ~15))
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#define PATHSEPERATOR_STR "/"
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#define PATHSEPERATOR_CHAR '/'
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#define __cdecl
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#define ASSERT assert
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#define ID_INLINE inline
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#define ID_STATIC_TEMPLATE
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#define assertmem( x, y )
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#endif
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// Unix
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#ifdef __unix__
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#if !defined(__GNUC__) || (defined(__MCST__) && __LCC__ < 128)
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// MCST-LCC < 1.28 does not support __builtin_alloca_with_align()
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#define _alloca( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}), alloca( (x) ))
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#define _alloca16( x ) (({assert( (x)<ID_MAX_ALLOCA_SIZE );}),((void *)((((uintptr_t)alloca( (x)+15 )) + 15) & ~15)))
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#else
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// GCC, CLANG, MCST-LCC >= 1.28
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#define _alloca16( x ) ( ({assert((x)<ID_MAX_ALLOCA_SIZE);}), __builtin_alloca_with_align( (x), 16*8 ) )
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#define _alloca( x ) ( ({assert((x)<ID_MAX_ALLOCA_SIZE);}), __builtin_alloca( (x) ) )
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#endif
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#ifdef GAME_DLL
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#define ID_GAME_API __attribute__((visibility ("default")))
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#else
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#define ID_GAME_API
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#endif
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#define ALIGN16( x ) x
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#define PACKED __attribute__((packed))
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#define PATHSEPERATOR_STR "/"
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#define PATHSEPERATOR_CHAR '/'
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#define __cdecl
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#define ASSERT assert
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#define ID_INLINE inline
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#define ID_STATIC_TEMPLATE
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#define assertmem( x, y )
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#endif
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#ifndef ID_MAYBE_INLINE
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// for MSVC it's __inline, otherwise just inline should work
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#define ID_MAYBE_INLINE inline
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#endif // ID_MAYBE_INLINE
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#ifdef __GNUC__
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#define id_attribute(x) __attribute__(x)
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#else
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#define id_attribute(x)
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#endif
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#if !defined(_MSC_VER)
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// MSVC does not provide this C99 header
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#include <inttypes.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <assert.h>
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#include <time.h>
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#include <ctype.h>
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#include <cstddef>
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#include <typeinfo>
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#include <errno.h>
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#include <math.h>
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#undef FindText // stupid namespace poluting Microsoft monkeys
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#endif
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// Apple legacy
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#ifdef __APPLE__
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#include <Availability.h>
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#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
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#if __MAC_OS_X_VERSION_MIN_REQUIRED == 1040
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#define OSX_TIGER
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#elif __MAC_OS_X_VERSION_MIN_REQUIRED < 1060
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#define OSX_LEOPARD
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#endif
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#endif
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#endif
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#define ID_TIME_T time_t
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typedef unsigned char byte; // 8 bits
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typedef unsigned short word; // 16 bits
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typedef unsigned int dword; // 32 bits
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typedef unsigned int uint;
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typedef unsigned long ulong;
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typedef int qhandle_t;
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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#ifndef BIT
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#define BIT( num ) ( 1 << ( num ) )
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#endif
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#define MAX_STRING_CHARS 1024 // max length of a string
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// maximum world size
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#define MAX_WORLD_COORD ( 128 * 1024 )
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#define MIN_WORLD_COORD ( -128 * 1024 )
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#define MAX_WORLD_SIZE ( MAX_WORLD_COORD - MIN_WORLD_COORD )
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#endif
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