1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26 /** 27 * \file glapi_dispatch.c 28 * 29 * This file generates all the gl* function entrypoints. This code is not 30 * used if optimized assembly stubs are available (e.g., using 31 * glapi/glapi_x86.S on IA32 or glapi/glapi_sparc.S on SPARC). 32 * 33 * \note 34 * This file is also used to build the client-side libGL that loads DRI-based 35 * device drivers. At build-time it is symlinked to src/glx. 36 * 37 * \author Brian Paul <[email protected]> 38 */ 39 40 #include "glapi/glapi_priv.h" 41 #include "glapitable.h" 42 43 44 #if !(defined(USE_X86_ASM) || defined(USE_X86_64_ASM) || defined(USE_SPARC_ASM)) 45 46 #if defined(_WIN32) 47 #define KEYWORD1 GLAPI 48 #else 49 #define KEYWORD1 PUBLIC 50 #endif 51 52 #define KEYWORD2 GLAPIENTRY 53 54 #define NAME(func) gl##func 55 56 #if 0 /* Use this to log GL calls to stdout (for debug only!) */ 57 58 #define F stdout 59 #define DISPATCH(FUNC, ARGS, MESSAGE) \ 60 fprintf MESSAGE; \ 61 GET_DISPATCH()->FUNC ARGS 62 63 #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \ 64 fprintf MESSAGE; \ 65 return GET_DISPATCH()->FUNC ARGS 66 67 #else 68 69 #define DISPATCH(FUNC, ARGS, MESSAGE) \ 70 GET_DISPATCH()->FUNC ARGS 71 72 #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \ 73 return GET_DISPATCH()->FUNC ARGS 74 75 #endif /* logging */ 76 77 /* Enable frame pointer elimination on Windows, otherwise forgetting to add 78 * GLAPIENTRY to _mesa_* entrypoints will not cause crashes on debug builds, as 79 * the initial ESP value is saved in the EBP in the function prologue, then 80 * restored on the epilogue, clobbering any corruption in the ESP pointer due 81 * to mismatch in the callee calling convention. 82 * 83 * On MSVC it's not sufficient to enable /Oy -- other optimizations must be 84 * enabled or frame pointer will be used regardless. 85 * 86 * We don't do this when NDEBUG is defined since, frame pointer omission 87 * optimization compiler flag are already specified on release builds, and 88 * because on profile builds we must have frame pointers or certain profilers 89 * might fail to unwind the stack. 90 */ 91 #if defined(_WIN32) && !defined(NDEBUG) 92 # if defined(_MSC_VER) 93 # pragma optimize( "gty", on ) 94 # elif defined(__GNUC__) 95 # pragma GCC optimize ("omit-frame-pointer") 96 # endif 97 #endif 98 99 #include "glapitemp.h" 100 101 #endif /* USE_X86_ASM */ 102