Mateusz Kowalik / Application_danix

,,

Fork of Application by Daniel Sygut

mbed-dev/platform/toolchain.h@10:41552d038a69, 2017-01-10 (annotated)

Committer:
Zaitsev
Date:
Tue Jan 10 20:42:26 2017 +0000
Revision:
10:41552d038a69
USB Serial bi-directional bridge

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Zaitsev 10:41552d038a69 1
Zaitsev 10:41552d038a69 2 /** \addtogroup platform */
Zaitsev 10:41552d038a69 3 /** @{*/
Zaitsev 10:41552d038a69 4 /* mbed Microcontroller Library
Zaitsev 10:41552d038a69 5 * Copyright (c) 2006-2013 ARM Limited
Zaitsev 10:41552d038a69 6 *
Zaitsev 10:41552d038a69 7 * Licensed under the Apache License, Version 2.0 (the "License");
Zaitsev 10:41552d038a69 8 * you may not use this file except in compliance with the License.
Zaitsev 10:41552d038a69 9 * You may obtain a copy of the License at
Zaitsev 10:41552d038a69 10 *
Zaitsev 10:41552d038a69 11 * http://www.apache.org/licenses/LICENSE-2.0
Zaitsev 10:41552d038a69 12 *
Zaitsev 10:41552d038a69 13 * Unless required by applicable law or agreed to in writing, software
Zaitsev 10:41552d038a69 14 * distributed under the License is distributed on an "AS IS" BASIS,
Zaitsev 10:41552d038a69 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Zaitsev 10:41552d038a69 16 * See the License for the specific language governing permissions and
Zaitsev 10:41552d038a69 17 * limitations under the License.
Zaitsev 10:41552d038a69 18 */
Zaitsev 10:41552d038a69 19 #ifndef MBED_TOOLCHAIN_H
Zaitsev 10:41552d038a69 20 #define MBED_TOOLCHAIN_H
Zaitsev 10:41552d038a69 21
Zaitsev 10:41552d038a69 22 #include "mbed_preprocessor.h"
Zaitsev 10:41552d038a69 23
Zaitsev 10:41552d038a69 24
Zaitsev 10:41552d038a69 25 // Warning for unsupported compilers
Zaitsev 10:41552d038a69 26 #if !defined(__GNUC__) /* GCC */ \
Zaitsev 10:41552d038a69 27 && !defined(__CC_ARM) /* ARMCC */ \
Zaitsev 10:41552d038a69 28 && !defined(__clang__) /* LLVM/Clang */ \
Zaitsev 10:41552d038a69 29 && !defined(__ICCARM__) /* IAR */
Zaitsev 10:41552d038a69 30 #warning "This compiler is not yet supported."
Zaitsev 10:41552d038a69 31 #endif
Zaitsev 10:41552d038a69 32
Zaitsev 10:41552d038a69 33
Zaitsev 10:41552d038a69 34 // Attributes
Zaitsev 10:41552d038a69 35
Zaitsev 10:41552d038a69 36 /** MBED_PACKED
Zaitsev 10:41552d038a69 37 * Pack a structure, preventing any padding from being added between fields.
Zaitsev 10:41552d038a69 38 *
Zaitsev 10:41552d038a69 39 * @code
Zaitsev 10:41552d038a69 40 * #include "toolchain.h"
Zaitsev 10:41552d038a69 41 *
Zaitsev 10:41552d038a69 42 * MBED_PACKED(struct) foo {
Zaitsev 10:41552d038a69 43 * char x;
Zaitsev 10:41552d038a69 44 * int y;
Zaitsev 10:41552d038a69 45 * };
Zaitsev 10:41552d038a69 46 * @endcode
Zaitsev 10:41552d038a69 47 */
Zaitsev 10:41552d038a69 48 #ifndef MBED_PACKED
Zaitsev 10:41552d038a69 49 #if defined(__ICCARM__)
Zaitsev 10:41552d038a69 50 #define MBED_PACKED(struct) __packed struct
Zaitsev 10:41552d038a69 51 #else
Zaitsev 10:41552d038a69 52 #define MBED_PACKED(struct) struct __attribute__((packed))
Zaitsev 10:41552d038a69 53 #endif
Zaitsev 10:41552d038a69 54 #endif
Zaitsev 10:41552d038a69 55
Zaitsev 10:41552d038a69 56 /** MBED_ALIGN(N)
Zaitsev 10:41552d038a69 57 * Declare a variable to be aligned on an N-byte boundary.
Zaitsev 10:41552d038a69 58 *
Zaitsev 10:41552d038a69 59 * @note
Zaitsev 10:41552d038a69 60 * IAR does not support alignment greater than word size on the stack
Zaitsev 10:41552d038a69 61 *
Zaitsev 10:41552d038a69 62 * @code
Zaitsev 10:41552d038a69 63 * #include "toolchain.h"
Zaitsev 10:41552d038a69 64 *
Zaitsev 10:41552d038a69 65 * MBED_ALIGN(16) char a;
Zaitsev 10:41552d038a69 66 * @endcode
Zaitsev 10:41552d038a69 67 */
Zaitsev 10:41552d038a69 68 #ifndef MBED_ALIGN
Zaitsev 10:41552d038a69 69 #if defined(__ICCARM__)
Zaitsev 10:41552d038a69 70 #define MBED_ALIGN(N) _Pragma(MBED_STRINGIFY(data_alignment=N))
Zaitsev 10:41552d038a69 71 #else
Zaitsev 10:41552d038a69 72 #define MBED_ALIGN(N) __attribute__((aligned(N)))
Zaitsev 10:41552d038a69 73 #endif
Zaitsev 10:41552d038a69 74 #endif
Zaitsev 10:41552d038a69 75
Zaitsev 10:41552d038a69 76 /** MBED_UNUSED
Zaitsev 10:41552d038a69 77 * Declare a function argument to be unused, suppressing compiler warnings
Zaitsev 10:41552d038a69 78 *
Zaitsev 10:41552d038a69 79 * @code
Zaitsev 10:41552d038a69 80 * #include "toolchain.h"
Zaitsev 10:41552d038a69 81 *
Zaitsev 10:41552d038a69 82 * void foo(MBED_UNUSED int arg) {
Zaitsev 10:41552d038a69 83 *
Zaitsev 10:41552d038a69 84 * }
Zaitsev 10:41552d038a69 85 * @endcode
Zaitsev 10:41552d038a69 86 */
Zaitsev 10:41552d038a69 87 #ifndef MBED_UNUSED
Zaitsev 10:41552d038a69 88 #if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
Zaitsev 10:41552d038a69 89 #define MBED_UNUSED __attribute__((__unused__))
Zaitsev 10:41552d038a69 90 #else
Zaitsev 10:41552d038a69 91 #define MBED_UNUSED
Zaitsev 10:41552d038a69 92 #endif
Zaitsev 10:41552d038a69 93 #endif
Zaitsev 10:41552d038a69 94
Zaitsev 10:41552d038a69 95 /** MBED_WEAK
Zaitsev 10:41552d038a69 96 * Mark a function as being weak.
Zaitsev 10:41552d038a69 97 *
Zaitsev 10:41552d038a69 98 * @note
Zaitsev 10:41552d038a69 99 * weak functions are not friendly to making code re-usable, as they can only
Zaitsev 10:41552d038a69 100 * be overridden once (and if they are multiply overridden the linker will emit
Zaitsev 10:41552d038a69 101 * no warning). You should not normally use weak symbols as part of the API to
Zaitsev 10:41552d038a69 102 * re-usable modules.
Zaitsev 10:41552d038a69 103 *
Zaitsev 10:41552d038a69 104 * @code
Zaitsev 10:41552d038a69 105 * #include "toolchain.h"
Zaitsev 10:41552d038a69 106 *
Zaitsev 10:41552d038a69 107 * MBED_WEAK void foo() {
Zaitsev 10:41552d038a69 108 * // a weak implementation of foo that can be overriden by a definition
Zaitsev 10:41552d038a69 109 * // without __weak
Zaitsev 10:41552d038a69 110 * }
Zaitsev 10:41552d038a69 111 * @endcode
Zaitsev 10:41552d038a69 112 */
Zaitsev 10:41552d038a69 113 #ifndef MBED_WEAK
Zaitsev 10:41552d038a69 114 #if defined(__ICCARM__)
Zaitsev 10:41552d038a69 115 #define MBED_WEAK __weak
Zaitsev 10:41552d038a69 116 #else
Zaitsev 10:41552d038a69 117 #define MBED_WEAK __attribute__((weak))
Zaitsev 10:41552d038a69 118 #endif
Zaitsev 10:41552d038a69 119 #endif
Zaitsev 10:41552d038a69 120
Zaitsev 10:41552d038a69 121 /** MBED_PURE
Zaitsev 10:41552d038a69 122 * Hint to the compiler that a function depends only on parameters
Zaitsev 10:41552d038a69 123 *
Zaitsev 10:41552d038a69 124 * @code
Zaitsev 10:41552d038a69 125 * #include "toolchain.h"
Zaitsev 10:41552d038a69 126 *
Zaitsev 10:41552d038a69 127 * MBED_PURE int foo(int arg){
Zaitsev 10:41552d038a69 128 * // no access to global variables
Zaitsev 10:41552d038a69 129 * }
Zaitsev 10:41552d038a69 130 * @endcode
Zaitsev 10:41552d038a69 131 */
Zaitsev 10:41552d038a69 132 #ifndef MBED_PURE
Zaitsev 10:41552d038a69 133 #if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
Zaitsev 10:41552d038a69 134 #define MBED_PURE __attribute__((const))
Zaitsev 10:41552d038a69 135 #else
Zaitsev 10:41552d038a69 136 #define MBED_PURE
Zaitsev 10:41552d038a69 137 #endif
Zaitsev 10:41552d038a69 138 #endif
Zaitsev 10:41552d038a69 139
Zaitsev 10:41552d038a69 140 /** MBED_FORCEINLINE
Zaitsev 10:41552d038a69 141 * Declare a function that must always be inlined. Failure to inline
Zaitsev 10:41552d038a69 142 * such a function will result in an error.
Zaitsev 10:41552d038a69 143 *
Zaitsev 10:41552d038a69 144 * @code
Zaitsev 10:41552d038a69 145 * #include "toolchain.h"
Zaitsev 10:41552d038a69 146 *
Zaitsev 10:41552d038a69 147 * MBED_FORCEINLINE void foo() {
Zaitsev 10:41552d038a69 148 *
Zaitsev 10:41552d038a69 149 * }
Zaitsev 10:41552d038a69 150 * @endcode
Zaitsev 10:41552d038a69 151 */
Zaitsev 10:41552d038a69 152 #ifndef MBED_FORCEINLINE
Zaitsev 10:41552d038a69 153 #if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
Zaitsev 10:41552d038a69 154 #define MBED_FORCEINLINE static inline __attribute__((always_inline))
Zaitsev 10:41552d038a69 155 #elif defined(__ICCARM__)
Zaitsev 10:41552d038a69 156 #define MBED_FORCEINLINE _Pragma("inline=forced") static
Zaitsev 10:41552d038a69 157 #else
Zaitsev 10:41552d038a69 158 #define MBED_FORCEINLINE static inline
Zaitsev 10:41552d038a69 159 #endif
Zaitsev 10:41552d038a69 160 #endif
Zaitsev 10:41552d038a69 161
Zaitsev 10:41552d038a69 162 /** MBED_NORETURN
Zaitsev 10:41552d038a69 163 * Declare a function that will never return.
Zaitsev 10:41552d038a69 164 *
Zaitsev 10:41552d038a69 165 * @code
Zaitsev 10:41552d038a69 166 * #include "toolchain.h"
Zaitsev 10:41552d038a69 167 *
Zaitsev 10:41552d038a69 168 * MBED_NORETURN void foo() {
Zaitsev 10:41552d038a69 169 * // must never return
Zaitsev 10:41552d038a69 170 * while (1) {}
Zaitsev 10:41552d038a69 171 * }
Zaitsev 10:41552d038a69 172 * @endcode
Zaitsev 10:41552d038a69 173 */
Zaitsev 10:41552d038a69 174 #ifndef MBED_NORETURN
Zaitsev 10:41552d038a69 175 #if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
Zaitsev 10:41552d038a69 176 #define MBED_NORETURN __attribute__((noreturn))
Zaitsev 10:41552d038a69 177 #elif defined(__ICCARM__)
Zaitsev 10:41552d038a69 178 #define MBED_NORETURN __noreturn
Zaitsev 10:41552d038a69 179 #else
Zaitsev 10:41552d038a69 180 #define MBED_NORETURN
Zaitsev 10:41552d038a69 181 #endif
Zaitsev 10:41552d038a69 182 #endif
Zaitsev 10:41552d038a69 183
Zaitsev 10:41552d038a69 184 /** MBED_UNREACHABLE
Zaitsev 10:41552d038a69 185 * An unreachable statement. If the statement is reached,
Zaitsev 10:41552d038a69 186 * behaviour is undefined. Useful in situations where the compiler
Zaitsev 10:41552d038a69 187 * cannot deduce the unreachability of code.
Zaitsev 10:41552d038a69 188 *
Zaitsev 10:41552d038a69 189 * @code
Zaitsev 10:41552d038a69 190 * #include "toolchain.h"
Zaitsev 10:41552d038a69 191 *
Zaitsev 10:41552d038a69 192 * void foo(int arg) {
Zaitsev 10:41552d038a69 193 * switch (arg) {
Zaitsev 10:41552d038a69 194 * case 1: return 1;
Zaitsev 10:41552d038a69 195 * case 2: return 2;
Zaitsev 10:41552d038a69 196 * ...
Zaitsev 10:41552d038a69 197 * }
Zaitsev 10:41552d038a69 198 * MBED_UNREACHABLE;
Zaitsev 10:41552d038a69 199 * }
Zaitsev 10:41552d038a69 200 * @endcode
Zaitsev 10:41552d038a69 201 */
Zaitsev 10:41552d038a69 202 #ifndef MBED_UNREACHABLE
Zaitsev 10:41552d038a69 203 #if (defined(__GNUC__) || defined(__clang__)) && !defined(__CC_ARM)
Zaitsev 10:41552d038a69 204 #define MBED_UNREACHABLE __builtin_unreachable()
Zaitsev 10:41552d038a69 205 #else
Zaitsev 10:41552d038a69 206 #define MBED_UNREACHABLE while (1)
Zaitsev 10:41552d038a69 207 #endif
Zaitsev 10:41552d038a69 208 #endif
Zaitsev 10:41552d038a69 209
Zaitsev 10:41552d038a69 210 /** MBED_DEPRECATED("message string")
Zaitsev 10:41552d038a69 211 * Mark a function declaration as deprecated, if it used then a warning will be
Zaitsev 10:41552d038a69 212 * issued by the compiler possibly including the provided message. Note that not
Zaitsev 10:41552d038a69 213 * all compilers are able to display the message.
Zaitsev 10:41552d038a69 214 *
Zaitsev 10:41552d038a69 215 * @code
Zaitsev 10:41552d038a69 216 * #include "toolchain.h"
Zaitsev 10:41552d038a69 217 *
Zaitsev 10:41552d038a69 218 * MBED_DEPRECATED("don't foo any more, bar instead")
Zaitsev 10:41552d038a69 219 * void foo(int arg);
Zaitsev 10:41552d038a69 220 * @endcode
Zaitsev 10:41552d038a69 221 */
Zaitsev 10:41552d038a69 222 #ifndef MBED_DEPRECATED
Zaitsev 10:41552d038a69 223 #if defined(__CC_ARM)
Zaitsev 10:41552d038a69 224 #define MBED_DEPRECATED(M) __attribute__((deprecated))
Zaitsev 10:41552d038a69 225 #elif defined(__GNUC__) || defined(__clang__)
Zaitsev 10:41552d038a69 226 #define MBED_DEPRECATED(M) __attribute__((deprecated(M)))
Zaitsev 10:41552d038a69 227 #else
Zaitsev 10:41552d038a69 228 #define MBED_DEPRECATED(M)
Zaitsev 10:41552d038a69 229 #endif
Zaitsev 10:41552d038a69 230 #endif
Zaitsev 10:41552d038a69 231
Zaitsev 10:41552d038a69 232 /** MBED_DEPRECATED_SINCE("version", "message string")
Zaitsev 10:41552d038a69 233 * Mark a function declaration as deprecated, noting that the declaration was
Zaitsev 10:41552d038a69 234 * deprecated on the specified version. If the function is used then a warning
Zaitsev 10:41552d038a69 235 * will be issued by the compiler possibly including the provided message.
Zaitsev 10:41552d038a69 236 * Note that not all compilers are able to display this message.
Zaitsev 10:41552d038a69 237 *
Zaitsev 10:41552d038a69 238 * @code
Zaitsev 10:41552d038a69 239 * #include "toolchain.h"
Zaitsev 10:41552d038a69 240 *
Zaitsev 10:41552d038a69 241 * MBED_DEPRECATED_SINCE("mbed-os-5.1", "don't foo any more, bar instead")
Zaitsev 10:41552d038a69 242 * void foo(int arg);
Zaitsev 10:41552d038a69 243 * @endcode
Zaitsev 10:41552d038a69 244 */
Zaitsev 10:41552d038a69 245 #define MBED_DEPRECATED_SINCE(D, M) MBED_DEPRECATED(M " [since " D "]")
Zaitsev 10:41552d038a69 246
Zaitsev 10:41552d038a69 247 /** MBED_CALLER_ADDR()
Zaitsev 10:41552d038a69 248 * Returns the caller of the current function.
Zaitsev 10:41552d038a69 249 *
Zaitsev 10:41552d038a69 250 * @note
Zaitsev 10:41552d038a69 251 * This macro is only implemented for GCC and ARMCC.
Zaitsev 10:41552d038a69 252 *
Zaitsev 10:41552d038a69 253 * @code
Zaitsev 10:41552d038a69 254 * #include "toolchain.h"
Zaitsev 10:41552d038a69 255 *
Zaitsev 10:41552d038a69 256 * printf("This function was called from %p", MBED_CALLER_ADDR());
Zaitsev 10:41552d038a69 257 * @endcode
Zaitsev 10:41552d038a69 258 *
Zaitsev 10:41552d038a69 259 * @return Address of the calling function
Zaitsev 10:41552d038a69 260 */
Zaitsev 10:41552d038a69 261 #ifndef MBED_CALLER_ADDR
Zaitsev 10:41552d038a69 262 #if (defined(__GNUC__) || defined(__clang__)) && !defined(__CC_ARM)
Zaitsev 10:41552d038a69 263 #define MBED_CALLER_ADDR() __builtin_extract_return_addr(__builtin_return_address(0))
Zaitsev 10:41552d038a69 264 #elif defined(__CC_ARM)
Zaitsev 10:41552d038a69 265 #define MBED_CALLER_ADDR() __builtin_return_address(0)
Zaitsev 10:41552d038a69 266 #else
Zaitsev 10:41552d038a69 267 #define MBED_CALLER_ADDR() (NULL)
Zaitsev 10:41552d038a69 268 #endif
Zaitsev 10:41552d038a69 269 #endif
Zaitsev 10:41552d038a69 270
Zaitsev 10:41552d038a69 271 // FILEHANDLE declaration
Zaitsev 10:41552d038a69 272 #if defined(TOOLCHAIN_ARM)
Zaitsev 10:41552d038a69 273 #include <rt_sys.h>
Zaitsev 10:41552d038a69 274 #endif
Zaitsev 10:41552d038a69 275
Zaitsev 10:41552d038a69 276 #ifndef FILEHANDLE
Zaitsev 10:41552d038a69 277 typedef int FILEHANDLE;
Zaitsev 10:41552d038a69 278 #endif
Zaitsev 10:41552d038a69 279
Zaitsev 10:41552d038a69 280 // Backwards compatibility
Zaitsev 10:41552d038a69 281 #ifndef WEAK
Zaitsev 10:41552d038a69 282 #define WEAK MBED_WEAK
Zaitsev 10:41552d038a69 283 #endif
Zaitsev 10:41552d038a69 284
Zaitsev 10:41552d038a69 285 #ifndef PACKED
Zaitsev 10:41552d038a69 286 #define PACKED MBED_PACKED()
Zaitsev 10:41552d038a69 287 #endif
Zaitsev 10:41552d038a69 288
Zaitsev 10:41552d038a69 289 #ifndef EXTERN
Zaitsev 10:41552d038a69 290 #define EXTERN extern
Zaitsev 10:41552d038a69 291 #endif
Zaitsev 10:41552d038a69 292
Zaitsev 10:41552d038a69 293 #endif
Zaitsev 10:41552d038a69 294
Zaitsev 10:41552d038a69 295 /** @}*/