mirror of
https://github.com/reactos/reactos.git
synced 2024-08-28 14:18:41 +00:00
507 lines
14 KiB
C
507 lines
14 KiB
C
/*
|
|
* Mesa 3-D graphics library
|
|
* Version: 7.5
|
|
*
|
|
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
|
|
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
|
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
|
|
/**
|
|
* \file compiler.h
|
|
* Compiler-related stuff.
|
|
*/
|
|
|
|
|
|
#ifndef COMPILER_H
|
|
#define COMPILER_H
|
|
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#if defined(__alpha__) && defined(CCPML)
|
|
#include <cpml.h> /* use Compaq's Fast Math Library on Alpha */
|
|
#else
|
|
#include <math.h>
|
|
#endif
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <float.h>
|
|
#include <stdarg.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Get standard integer types
|
|
*/
|
|
#include <stdint.h>
|
|
|
|
|
|
/**
|
|
* Sun compilers define __i386 instead of the gcc-style __i386__
|
|
*/
|
|
#ifdef __SUNPRO_C
|
|
# if !defined(__i386__) && defined(__i386)
|
|
# define __i386__
|
|
# elif !defined(__amd64__) && defined(__amd64)
|
|
# define __amd64__
|
|
# elif !defined(__sparc__) && defined(__sparc)
|
|
# define __sparc__
|
|
# endif
|
|
# if !defined(__volatile)
|
|
# define __volatile volatile
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/**
|
|
* finite macro.
|
|
*/
|
|
#if defined(_MSC_VER)
|
|
# define finite _finite
|
|
#elif defined(__WATCOMC__)
|
|
# define finite _finite
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Disable assorted warnings
|
|
*/
|
|
#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
|
|
# if !defined(__GNUC__) /* mingw environment */
|
|
# pragma warning( disable : 4068 ) /* unknown pragma */
|
|
# pragma warning( disable : 4710 ) /* function 'foo' not inlined */
|
|
# pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
|
|
# pragma warning( disable : 4127 ) /* conditional expression is constant */
|
|
# if defined(MESA_MINWARN)
|
|
# pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
|
|
# pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
|
|
# pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
|
|
# pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
|
|
# pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
|
|
# endif
|
|
# endif
|
|
#endif
|
|
#if defined(__WATCOMC__)
|
|
# pragma disable_message(201) /* Disable unreachable code warnings */
|
|
#endif
|
|
|
|
|
|
|
|
/**
|
|
* Function inlining
|
|
*/
|
|
#ifndef inline
|
|
# ifdef __cplusplus
|
|
/* C++ supports inline keyword */
|
|
# elif defined(__GNUC__)
|
|
# define inline __inline__
|
|
# elif defined(_MSC_VER)
|
|
# define inline __inline
|
|
# elif defined(__ICL)
|
|
# define inline __inline
|
|
# elif defined(__INTEL_COMPILER)
|
|
/* Intel compiler supports inline keyword */
|
|
# elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
|
|
# define inline __inline
|
|
# elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
|
|
/* C99 supports inline keyword */
|
|
# elif (__STDC_VERSION__ >= 199901L)
|
|
/* C99 supports inline keyword */
|
|
# else
|
|
# define inline
|
|
# endif
|
|
#endif
|
|
#ifndef INLINE
|
|
# define INLINE inline
|
|
#endif
|
|
|
|
|
|
/**
|
|
* PUBLIC/USED macros
|
|
*
|
|
* If we build the library with gcc's -fvisibility=hidden flag, we'll
|
|
* use the PUBLIC macro to mark functions that are to be exported.
|
|
*
|
|
* We also need to define a USED attribute, so the optimizer doesn't
|
|
* inline a static function that we later use in an alias. - ajax
|
|
*/
|
|
#ifndef PUBLIC
|
|
# if (defined(__GNUC__) && __GNUC__ >= 4) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
|
|
# define PUBLIC __attribute__((visibility("default")))
|
|
# define USED __attribute__((used))
|
|
# else
|
|
# define PUBLIC
|
|
# define USED
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Some compilers don't like some of Mesa's const usage. In those places use
|
|
* CONST instead of const. Pass -DNO_CONST to compilers where this matters.
|
|
*/
|
|
#ifdef NO_CONST
|
|
# define CONST
|
|
#else
|
|
# define CONST const
|
|
#endif
|
|
|
|
|
|
/**
|
|
* __builtin_expect macros
|
|
*/
|
|
#if !defined(__GNUC__)
|
|
# define __builtin_expect(x, y) (x)
|
|
#endif
|
|
|
|
#ifndef likely
|
|
# ifdef __GNUC__
|
|
# define likely(x) __builtin_expect(!!(x), 1)
|
|
# define unlikely(x) __builtin_expect(!!(x), 0)
|
|
# else
|
|
# define likely(x) (x)
|
|
# define unlikely(x) (x)
|
|
# endif
|
|
#endif
|
|
|
|
/**
|
|
* The __FUNCTION__ gcc variable is generally only used for debugging.
|
|
* If we're not using gcc, define __FUNCTION__ as a cpp symbol here.
|
|
* Don't define it if using a newer Windows compiler.
|
|
*/
|
|
#ifndef __FUNCTION__
|
|
# if defined(__VMS)
|
|
# define __FUNCTION__ "VMS$NL:"
|
|
# elif !defined(__GNUC__) && !defined(__xlC__) && \
|
|
(!defined(_MSC_VER) || _MSC_VER < 1300)
|
|
# if (__STDC_VERSION__ >= 199901L) /* C99 */ || \
|
|
(defined(__SUNPRO_C) && defined(__C99FEATURES__))
|
|
# define __FUNCTION__ __func__
|
|
# else
|
|
# define __FUNCTION__ "<unknown>"
|
|
# endif
|
|
# endif
|
|
#endif
|
|
#ifndef __func__
|
|
# if (__STDC_VERSION__ >= 199901L) || \
|
|
(defined(__SUNPRO_C) && defined(__C99FEATURES__))
|
|
/* __func__ is part of C99 */
|
|
# elif defined(_MSC_VER)
|
|
# if _MSC_VER >= 1300
|
|
# define __func__ __FUNCTION__
|
|
# else
|
|
# define __func__ "<unknown>"
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32.
|
|
* Do not use these unless absolutely necessary!
|
|
* Try to use a runtime test instead.
|
|
* For now, only used by some DRI hardware drivers for color/texel packing.
|
|
*/
|
|
#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
|
|
#if defined(__linux__)
|
|
#include <byteswap.h>
|
|
#define CPU_TO_LE32( x ) bswap_32( x )
|
|
#elif defined(__APPLE__)
|
|
#include <CoreFoundation/CFByteOrder.h>
|
|
#define CPU_TO_LE32( x ) CFSwapInt32HostToLittle( x )
|
|
#elif (defined(_AIX) || defined(__blrts))
|
|
static INLINE GLuint CPU_TO_LE32(GLuint x)
|
|
{
|
|
return (((x & 0x000000ff) << 24) |
|
|
((x & 0x0000ff00) << 8) |
|
|
((x & 0x00ff0000) >> 8) |
|
|
((x & 0xff000000) >> 24));
|
|
}
|
|
#else /*__linux__ */
|
|
#include <sys/endian.h>
|
|
#define CPU_TO_LE32( x ) bswap32( x )
|
|
#endif /*__linux__*/
|
|
#define MESA_BIG_ENDIAN 1
|
|
#else
|
|
#define CPU_TO_LE32( x ) ( x )
|
|
#define MESA_LITTLE_ENDIAN 1
|
|
#endif
|
|
#define LE32_TO_CPU( x ) CPU_TO_LE32( x )
|
|
|
|
|
|
|
|
#if !defined(CAPI) && defined(WIN32) && !defined(BUILD_FOR_SNAP)
|
|
#define CAPI _cdecl
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Create a macro so that asm functions can be linked into compilers other
|
|
* than GNU C
|
|
*/
|
|
#ifndef _ASMAPI
|
|
#if defined(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
|
|
#define _ASMAPI __cdecl
|
|
#else
|
|
#define _ASMAPI
|
|
#endif
|
|
#ifdef PTR_DECL_IN_FRONT
|
|
#define _ASMAPIP * _ASMAPI
|
|
#else
|
|
#define _ASMAPIP _ASMAPI *
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef USE_X86_ASM
|
|
#define _NORMAPI _ASMAPI
|
|
#define _NORMAPIP _ASMAPIP
|
|
#else
|
|
#define _NORMAPI
|
|
#define _NORMAPIP *
|
|
#endif
|
|
|
|
|
|
/* This is a macro on IRIX */
|
|
#ifdef _P
|
|
#undef _P
|
|
#endif
|
|
|
|
|
|
/* Turn off macro checking systems used by other libraries */
|
|
#ifdef CHECK
|
|
#undef CHECK
|
|
#endif
|
|
|
|
|
|
/**
|
|
* ASSERT macro
|
|
*/
|
|
#if !defined(_WIN32_WCE)
|
|
#if defined(BUILD_FOR_SNAP) && defined(CHECKED)
|
|
# define ASSERT(X) _CHECK(X)
|
|
#elif defined(DEBUG)
|
|
# define ASSERT(X) assert(X)
|
|
#else
|
|
# define ASSERT(X)
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Static (compile-time) assertion.
|
|
* Basically, use COND to dimension an array. If COND is false/zero the
|
|
* array size will be -1 and we'll get a compilation error.
|
|
*/
|
|
#define STATIC_ASSERT(COND) \
|
|
do { \
|
|
typedef int static_assertion_failed[(!!(COND))*2-1]; \
|
|
} while (0)
|
|
|
|
|
|
#if (__GNUC__ >= 3)
|
|
#define PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
|
|
#else
|
|
#define PRINTFLIKE(f, a)
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
|
|
/**
|
|
* LONGSTRING macro
|
|
* gcc -pedantic warns about long string literals, LONGSTRING silences that.
|
|
*/
|
|
#if !defined(__GNUC__)
|
|
# define LONGSTRING
|
|
#else
|
|
# define LONGSTRING __extension__
|
|
#endif
|
|
|
|
|
|
#ifndef M_PI
|
|
#define M_PI (3.14159265358979323846)
|
|
#endif
|
|
|
|
#ifndef M_E
|
|
#define M_E (2.7182818284590452354)
|
|
#endif
|
|
|
|
#ifndef M_LOG2E
|
|
#define M_LOG2E (1.4426950408889634074)
|
|
#endif
|
|
|
|
#ifndef ONE_DIV_SQRT_LN2
|
|
#define ONE_DIV_SQRT_LN2 (1.201122408786449815)
|
|
#endif
|
|
|
|
#ifndef FLT_MAX_EXP
|
|
#define FLT_MAX_EXP 128
|
|
#endif
|
|
|
|
|
|
/**
|
|
* USE_IEEE: Determine if we're using IEEE floating point
|
|
*/
|
|
#if defined(__i386__) || defined(__386__) || defined(__sparc__) || \
|
|
defined(__s390x__) || defined(__powerpc__) || \
|
|
defined(__x86_64__) || \
|
|
defined(ia64) || defined(__ia64__) || \
|
|
defined(__hppa__) || defined(hpux) || \
|
|
defined(__mips) || defined(_MIPS_ARCH) || \
|
|
defined(__arm__) || \
|
|
defined(__sh__) || defined(__m32r__) || \
|
|
(defined(__sun) && defined(_IEEE_754)) || \
|
|
(defined(__alpha__) && (defined(__IEEE_FLOAT) || !defined(VMS)))
|
|
#define USE_IEEE
|
|
#define IEEE_ONE 0x3f800000
|
|
#endif
|
|
|
|
|
|
/**
|
|
* START/END_FAST_MATH macros:
|
|
*
|
|
* START_FAST_MATH: Set x86 FPU to faster, 32-bit precision mode (and save
|
|
* original mode to a temporary).
|
|
* END_FAST_MATH: Restore x86 FPU to original mode.
|
|
*/
|
|
#if defined(__GNUC__) && defined(__i386__)
|
|
/*
|
|
* Set the x86 FPU control word to guarentee only 32 bits of precision
|
|
* are stored in registers. Allowing the FPU to store more introduces
|
|
* differences between situations where numbers are pulled out of memory
|
|
* vs. situations where the compiler is able to optimize register usage.
|
|
*
|
|
* In the worst case, we force the compiler to use a memory access to
|
|
* truncate the float, by specifying the 'volatile' keyword.
|
|
*/
|
|
/* Hardware default: All exceptions masked, extended double precision,
|
|
* round to nearest (IEEE compliant):
|
|
*/
|
|
#define DEFAULT_X86_FPU 0x037f
|
|
/* All exceptions masked, single precision, round to nearest:
|
|
*/
|
|
#define FAST_X86_FPU 0x003f
|
|
/* The fldcw instruction will cause any pending FP exceptions to be
|
|
* raised prior to entering the block, and we clear any pending
|
|
* exceptions before exiting the block. Hence, asm code has free
|
|
* reign over the FPU while in the fast math block.
|
|
*/
|
|
#if defined(NO_FAST_MATH)
|
|
#define START_FAST_MATH(x) \
|
|
do { \
|
|
static GLuint mask = DEFAULT_X86_FPU; \
|
|
__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
|
|
__asm__ ( "fldcw %0" : : "m" (mask) ); \
|
|
} while (0)
|
|
#else
|
|
#define START_FAST_MATH(x) \
|
|
do { \
|
|
static GLuint mask = FAST_X86_FPU; \
|
|
__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
|
|
__asm__ ( "fldcw %0" : : "m" (mask) ); \
|
|
} while (0)
|
|
#endif
|
|
/* Restore original FPU mode, and clear any exceptions that may have
|
|
* occurred in the FAST_MATH block.
|
|
*/
|
|
#define END_FAST_MATH(x) \
|
|
do { \
|
|
__asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) ); \
|
|
} while (0)
|
|
|
|
#elif defined(__WATCOMC__) && defined(__386__)
|
|
#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
|
|
#define FAST_X86_FPU 0x003f /* See GCC comments above */
|
|
void _watcom_start_fast_math(unsigned short *x,unsigned short *mask);
|
|
#pragma aux _watcom_start_fast_math = \
|
|
"fnstcw word ptr [eax]" \
|
|
"fldcw word ptr [ecx]" \
|
|
parm [eax] [ecx] \
|
|
modify exact [];
|
|
void _watcom_end_fast_math(unsigned short *x);
|
|
#pragma aux _watcom_end_fast_math = \
|
|
"fnclex" \
|
|
"fldcw word ptr [eax]" \
|
|
parm [eax] \
|
|
modify exact [];
|
|
#if defined(NO_FAST_MATH)
|
|
#define START_FAST_MATH(x) \
|
|
do { \
|
|
static GLushort mask = DEFAULT_X86_FPU; \
|
|
_watcom_start_fast_math(&x,&mask); \
|
|
} while (0)
|
|
#else
|
|
#define START_FAST_MATH(x) \
|
|
do { \
|
|
static GLushort mask = FAST_X86_FPU; \
|
|
_watcom_start_fast_math(&x,&mask); \
|
|
} while (0)
|
|
#endif
|
|
#define END_FAST_MATH(x) _watcom_end_fast_math(&x)
|
|
|
|
#elif defined(_MSC_VER) && defined(_M_IX86)
|
|
#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
|
|
#define FAST_X86_FPU 0x003f /* See GCC comments above */
|
|
#if defined(NO_FAST_MATH)
|
|
#define START_FAST_MATH(x) do {\
|
|
static GLuint mask = DEFAULT_X86_FPU;\
|
|
__asm fnstcw word ptr [x]\
|
|
__asm fldcw word ptr [mask]\
|
|
} while(0)
|
|
#else
|
|
#define START_FAST_MATH(x) do {\
|
|
static GLuint mask = FAST_X86_FPU;\
|
|
__asm fnstcw word ptr [x]\
|
|
__asm fldcw word ptr [mask]\
|
|
} while(0)
|
|
#endif
|
|
#define END_FAST_MATH(x) do {\
|
|
__asm fnclex\
|
|
__asm fldcw word ptr [x]\
|
|
} while(0)
|
|
|
|
#else
|
|
#define START_FAST_MATH(x) x = 0
|
|
#define END_FAST_MATH(x) (void)(x)
|
|
#endif
|
|
|
|
|
|
#ifndef Elements
|
|
#define Elements(x) (sizeof(x)/sizeof(*(x)))
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif /* COMPILER_H */
|