1#ifndef __khrplatform_h_ 2#define __khrplatform_h_ 3 4/* 5** Copyright (c) 2008-2018 The Khronos Group Inc. 6** 7** Permission is hereby granted, free of charge, to any person obtaining a 8** copy of this software and/or associated documentation files (the 9** "Materials"), to deal in the Materials without restriction, including 10** without limitation the rights to use, copy, modify, merge, publish, 11** distribute, sublicense, and/or sell copies of the Materials, and to 12** permit persons to whom the Materials are furnished to do so, subject to 13** the following conditions: 14** 15** The above copyright notice and this permission notice shall be included 16** in all copies or substantial portions of the Materials. 17** 18** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 22** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. 25*/ 26 27/* Khronos platform-specific types and definitions. 28 * 29 * The master copy of khrplatform.h is maintained in the Khronos EGL 30 * Registry repository at https://github.com/KhronosGroup/EGL-Registry 31 * The last semantic modification to khrplatform.h was at commit ID: 32 * 67a3e0864c2d75ea5287b9f3d2eb74a745936692 33 * 34 * Adopters may modify this file to suit their platform. Adopters are 35 * encouraged to submit platform specific modifications to the Khronos 36 * group so that they can be included in future versions of this file. 37 * Please submit changes by filing pull requests or issues on 38 * the EGL Registry repository linked above. 39 * 40 * 41 * See the Implementer's Guidelines for information about where this file 42 * should be located on your system and for more details of its use: 43 * http://www.khronos.org/registry/implementers_guide.pdf 44 * 45 * This file should be included as 46 * #include <KHR/khrplatform.h> 47 * by Khronos client API header files that use its types and defines. 48 * 49 * The types in khrplatform.h should only be used to define API-specific types. 50 * 51 * Types defined in khrplatform.h: 52 * khronos_int8_t signed 8 bit 53 * khronos_uint8_t unsigned 8 bit 54 * khronos_int16_t signed 16 bit 55 * khronos_uint16_t unsigned 16 bit 56 * khronos_int32_t signed 32 bit 57 * khronos_uint32_t unsigned 32 bit 58 * khronos_int64_t signed 64 bit 59 * khronos_uint64_t unsigned 64 bit 60 * khronos_intptr_t signed same number of bits as a pointer 61 * khronos_uintptr_t unsigned same number of bits as a pointer 62 * khronos_ssize_t signed size 63 * khronos_usize_t unsigned size 64 * khronos_float_t signed 32 bit floating point 65 * khronos_time_ns_t unsigned 64 bit time in nanoseconds 66 * khronos_utime_nanoseconds_t unsigned time interval or absolute time in 67 * nanoseconds 68 * khronos_stime_nanoseconds_t signed time interval in nanoseconds 69 * khronos_boolean_enum_t enumerated boolean type. This should 70 * only be used as a base type when a client API's boolean type is 71 * an enum. Client APIs which use an integer or other type for 72 * booleans cannot use this as the base type for their boolean. 73 * 74 * Tokens defined in khrplatform.h: 75 * 76 * KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values. 77 * 78 * KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0. 79 * KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0. 80 * 81 * Calling convention macros defined in this file: 82 * KHRONOS_APICALL 83 * KHRONOS_APIENTRY 84 * KHRONOS_APIATTRIBUTES 85 * 86 * These may be used in function prototypes as: 87 * 88 * KHRONOS_APICALL void KHRONOS_APIENTRY funcname( 89 * int arg1, 90 * int arg2) KHRONOS_APIATTRIBUTES; 91 */ 92 93#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC) 94# define KHRONOS_STATIC 1 95#endif 96 97/*------------------------------------------------------------------------- 98 * Definition of KHRONOS_APICALL 99 *------------------------------------------------------------------------- 100 * This precedes the return type of the function in the function prototype. 101 */ 102#if defined(KHRONOS_STATIC) 103 /* If the preprocessor constant KHRONOS_STATIC is defined, make the 104 * header compatible with static linking. */ 105# define KHRONOS_APICALL 106#elif defined(_WIN32) 107# define KHRONOS_APICALL __declspec(dllimport) 108#elif defined (__SYMBIAN32__) 109# define KHRONOS_APICALL IMPORT_C 110#elif defined(__ANDROID__) 111# define KHRONOS_APICALL __attribute__((visibility("default"))) 112#else 113# define KHRONOS_APICALL 114#endif 115 116/*------------------------------------------------------------------------- 117 * Definition of KHRONOS_APIENTRY 118 *------------------------------------------------------------------------- 119 * This follows the return type of the function and precedes the function 120 * name in the function prototype. 121 */ 122#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__) 123 /* Win32 but not WinCE */ 124# define KHRONOS_APIENTRY __stdcall 125#else 126# define KHRONOS_APIENTRY 127#endif 128 129/*------------------------------------------------------------------------- 130 * Definition of KHRONOS_APIATTRIBUTES 131 *------------------------------------------------------------------------- 132 * This follows the closing parenthesis of the function prototype arguments. 133 */ 134#if defined (__ARMCC_2__) 135#define KHRONOS_APIATTRIBUTES __softfp 136#else 137#define KHRONOS_APIATTRIBUTES 138#endif 139 140/*------------------------------------------------------------------------- 141 * basic type definitions 142 *-----------------------------------------------------------------------*/ 143#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__) 144 145 146/* 147 * Using <stdint.h> 148 */ 149#include <stdint.h> 150typedef int32_t khronos_int32_t; 151typedef uint32_t khronos_uint32_t; 152typedef int64_t khronos_int64_t; 153typedef uint64_t khronos_uint64_t; 154#define KHRONOS_SUPPORT_INT64 1 155#define KHRONOS_SUPPORT_FLOAT 1 156/* 157 * To support platform where unsigned long cannot be used interchangeably with 158 * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t. 159 * Ideally, we could just use (u)intptr_t everywhere, but this could result in 160 * ABI breakage if khronos_uintptr_t is changed from unsigned long to 161 * unsigned long long or similar (this results in different C++ name mangling). 162 * To avoid changes for existing platforms, we restrict usage of intptr_t to 163 * platforms where the size of a pointer is larger than the size of long. 164 */ 165#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__) 166#if __SIZEOF_POINTER__ > __SIZEOF_LONG__ 167#define KHRONOS_USE_INTPTR_T 168#endif 169#endif 170 171#elif defined(__VMS ) || defined(__sgi) 172 173/* 174 * Using <inttypes.h> 175 */ 176#include <inttypes.h> 177typedef int32_t khronos_int32_t; 178typedef uint32_t khronos_uint32_t; 179typedef int64_t khronos_int64_t; 180typedef uint64_t khronos_uint64_t; 181#define KHRONOS_SUPPORT_INT64 1 182#define KHRONOS_SUPPORT_FLOAT 1 183 184#elif defined(_WIN32) && !defined(__SCITECH_SNAP__) 185 186/* 187 * Win32 188 */ 189typedef __int32 khronos_int32_t; 190typedef unsigned __int32 khronos_uint32_t; 191typedef __int64 khronos_int64_t; 192typedef unsigned __int64 khronos_uint64_t; 193#define KHRONOS_SUPPORT_INT64 1 194#define KHRONOS_SUPPORT_FLOAT 1 195 196#elif defined(__sun__) || defined(__digital__) 197 198/* 199 * Sun or Digital 200 */ 201typedef int khronos_int32_t; 202typedef unsigned int khronos_uint32_t; 203#if defined(__arch64__) || defined(_LP64) 204typedef long int khronos_int64_t; 205typedef unsigned long int khronos_uint64_t; 206#else 207typedef long long int khronos_int64_t; 208typedef unsigned long long int khronos_uint64_t; 209#endif /* __arch64__ */ 210#define KHRONOS_SUPPORT_INT64 1 211#define KHRONOS_SUPPORT_FLOAT 1 212 213#elif 0 214 215/* 216 * Hypothetical platform with no float or int64 support 217 */ 218typedef int khronos_int32_t; 219typedef unsigned int khronos_uint32_t; 220#define KHRONOS_SUPPORT_INT64 0 221#define KHRONOS_SUPPORT_FLOAT 0 222 223#else 224 225/* 226 * Generic fallback 227 */ 228#include <stdint.h> 229typedef int32_t khronos_int32_t; 230typedef uint32_t khronos_uint32_t; 231typedef int64_t khronos_int64_t; 232typedef uint64_t khronos_uint64_t; 233#define KHRONOS_SUPPORT_INT64 1 234#define KHRONOS_SUPPORT_FLOAT 1 235 236#endif 237 238 239/* 240 * Types that are (so far) the same on all platforms 241 */ 242typedef signed char khronos_int8_t; 243typedef unsigned char khronos_uint8_t; 244typedef signed short int khronos_int16_t; 245typedef unsigned short int khronos_uint16_t; 246 247/* 248 * Types that differ between LLP64 and LP64 architectures - in LLP64, 249 * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears 250 * to be the only LLP64 architecture in current use. 251 */ 252#ifdef KHRONOS_USE_INTPTR_T 253typedef intptr_t khronos_intptr_t; 254typedef uintptr_t khronos_uintptr_t; 255#elif defined(_WIN64) 256typedef signed long long int khronos_intptr_t; 257typedef unsigned long long int khronos_uintptr_t; 258#else 259typedef signed long int khronos_intptr_t; 260typedef unsigned long int khronos_uintptr_t; 261#endif 262 263#if defined(_WIN64) 264typedef signed long long int khronos_ssize_t; 265typedef unsigned long long int khronos_usize_t; 266#else 267typedef signed long int khronos_ssize_t; 268typedef unsigned long int khronos_usize_t; 269#endif 270 271#if KHRONOS_SUPPORT_FLOAT 272/* 273 * Float type 274 */ 275typedef float khronos_float_t; 276#endif 277 278#if KHRONOS_SUPPORT_INT64 279/* Time types 280 * 281 * These types can be used to represent a time interval in nanoseconds or 282 * an absolute Unadjusted System Time. Unadjusted System Time is the number 283 * of nanoseconds since some arbitrary system event (e.g. since the last 284 * time the system booted). The Unadjusted System Time is an unsigned 285 * 64 bit value that wraps back to 0 every 584 years. Time intervals 286 * may be either signed or unsigned. 287 */ 288typedef khronos_uint64_t khronos_utime_nanoseconds_t; 289typedef khronos_int64_t khronos_stime_nanoseconds_t; 290#endif 291 292/* 293 * Dummy value used to pad enum types to 32 bits. 294 */ 295#ifndef KHRONOS_MAX_ENUM 296#define KHRONOS_MAX_ENUM 0x7FFFFFFF 297#endif 298 299/* 300 * Enumerated boolean type 301 * 302 * Values other than zero should be considered to be true. Therefore 303 * comparisons should not be made against KHRONOS_TRUE. 304 */ 305typedef enum { 306 KHRONOS_FALSE = 0, 307 KHRONOS_TRUE = 1, 308 KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM 309} khronos_boolean_enum_t; 310 311#endif /* __khrplatform_h_ */ 312