1 /* 2 * Copyright 2009-2015 Samy Al Bahra. 3 * Copyright 2014 Paul Khuong. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef CK_CC_H 29 #define CK_CC_H 30 31 #if defined(__GNUC__) || defined(__SUNPRO_C) 32 #include "gcc/ck_cc.h" 33 #endif 34 35 #ifndef CK_CC_RESTRICT 36 #define CK_CC_RESTRICT 37 #endif 38 39 #ifndef CK_CC_INLINE 40 #define CK_CC_INLINE inline 41 #endif 42 43 #ifndef CK_CC_FORCE_INLINE 44 #define CK_CC_FORCE_INLINE inline 45 #endif 46 47 #define CK_CC_DECONST_PTR(X) ((void *)(uintptr_t)(X)) 48 49 /* 50 * Container function. 51 * This relies on (compiler) implementation-defined behavior. 52 */ 53 #define CK_CC_CONTAINER(F, T, M, N) \ 54 CK_CC_INLINE static T * \ 55 N(F *p) \ 56 { \ 57 F *n = p; \ 58 return (T *)(void *)(((char *)n) - ((size_t)&((T *)0)->M)); \ 59 } 60 61 #define CK_CC_PAD(x) union { char pad[x]; } 62 63 #ifndef CK_CC_ALIASED 64 #define CK_CC_ALIASED 65 #endif 66 67 #ifndef CK_CC_UNUSED 68 #define CK_CC_UNUSED 69 #endif 70 71 #ifndef CK_CC_USED 72 #define CK_CC_USED 73 #endif 74 75 #ifndef CK_CC_IMM 76 #define CK_CC_IMM 77 #endif 78 79 #ifndef CK_CC_PACKED 80 #define CK_CC_PACKED 81 #endif 82 83 #ifndef CK_CC_WEAKREF 84 #define CK_CC_WEAKREF 85 #endif 86 87 #ifndef CK_CC_ALIGN 88 #define CK_CC_ALIGN(X) 89 #endif 90 91 #ifndef CK_CC_CACHELINE 92 #define CK_CC_CACHELINE 93 #endif 94 95 #ifndef CK_CC_LIKELY 96 #define CK_CC_LIKELY(x) x 97 #endif 98 99 #ifndef CK_CC_UNLIKELY 100 #define CK_CC_UNLIKELY(x) x 101 #endif 102 103 #ifndef CK_CC_TYPEOF 104 #define CK_CC_TYPEOF(X, DEFAULT) (DEFAULT) 105 #endif 106 107 #define CK_F_CC_FFS_G(L, T) \ 108 CK_CC_INLINE static int \ 109 ck_cc_##L(T v) \ 110 { \ 111 unsigned int i; \ 112 \ 113 if (v == 0) \ 114 return 0; \ 115 \ 116 for (i = 1; (v & 1) == 0; i++, v >>= 1); \ 117 return i; \ 118 } 119 120 #ifndef CK_F_CC_FFS 121 #define CK_F_CC_FFS 122 CK_F_CC_FFS_G(ffs, unsigned int) 123 #endif /* CK_F_CC_FFS */ 124 125 #ifndef CK_F_CC_FFSL 126 #define CK_F_CC_FFSL 127 CK_F_CC_FFS_G(ffsl, unsigned long) 128 #endif /* CK_F_CC_FFSL */ 129 130 #ifndef CK_F_CC_FFSLL 131 #define CK_F_CC_FFSLL 132 CK_F_CC_FFS_G(ffsll, unsigned long long) 133 #endif /* CK_F_CC_FFSLL */ 134 135 #undef CK_F_CC_FFS_G 136 137 #ifndef CK_F_CC_CTZ 138 #define CK_F_CC_CTZ 139 CK_CC_INLINE static int 140 ck_cc_ctz(unsigned int x) 141 { 142 unsigned int i; 143 144 if (x == 0) 145 return 0; 146 147 for (i = 0; (x & 1) == 0; i++, x >>= 1); 148 return i; 149 } 150 #endif 151 152 #ifndef CK_F_CC_POPCOUNT 153 #define CK_F_CC_POPCOUNT 154 CK_CC_INLINE static int 155 ck_cc_popcount(unsigned int x) 156 { 157 unsigned int acc; 158 159 for (acc = 0; x != 0; x >>= 1) 160 acc += x & 1; 161 162 return acc; 163 } 164 #endif 165 166 167 #ifdef __cplusplus 168 #define CK_CPP_CAST(type, arg) static_cast<type>(arg) 169 #else 170 #define CK_CPP_CAST(type, arg) arg 171 #endif 172 173 #endif /* CK_CC_H */ 174