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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_RZ_A1H/core_cmInstr.h@157:e7ca05fa8600, 2017-11-09 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 09 11:14:10 2017 +0000
Revision:
157:e7ca05fa8600
Parent:
156:ff21514d8981 
Release 155 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1 /**************************************************************************//**
AnnaBridge 156:ff21514d8981 2 * @file core_cmInstr.h
AnnaBridge 156:ff21514d8981 3 * @brief CMSIS Cortex-M Core Instruction Access Header File
AnnaBridge 156:ff21514d8981 4 * @version V4.10
AnnaBridge 156:ff21514d8981 5 * @date 18. March 2015
AnnaBridge 156:ff21514d8981 6 *
AnnaBridge 156:ff21514d8981 7 * @note
AnnaBridge 156:ff21514d8981 8 *
AnnaBridge 156:ff21514d8981 9 ******************************************************************************/
AnnaBridge 156:ff21514d8981 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
AnnaBridge 156:ff21514d8981 11
AnnaBridge 156:ff21514d8981 12 All rights reserved.
AnnaBridge 156:ff21514d8981 13 Redistribution and use in source and binary forms, with or without
AnnaBridge 156:ff21514d8981 14 modification, are permitted provided that the following conditions are met:
AnnaBridge 156:ff21514d8981 15 - Redistributions of source code must retain the above copyright
AnnaBridge 156:ff21514d8981 16 notice, this list of conditions and the following disclaimer.
AnnaBridge 156:ff21514d8981 17 - Redistributions in binary form must reproduce the above copyright
AnnaBridge 156:ff21514d8981 18 notice, this list of conditions and the following disclaimer in the
AnnaBridge 156:ff21514d8981 19 documentation and/or other materials provided with the distribution.
AnnaBridge 156:ff21514d8981 20 - Neither the name of ARM nor the names of its contributors may be used
AnnaBridge 156:ff21514d8981 21 to endorse or promote products derived from this software without
AnnaBridge 156:ff21514d8981 22 specific prior written permission.
AnnaBridge 156:ff21514d8981 23 *
AnnaBridge 156:ff21514d8981 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 156:ff21514d8981 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 156:ff21514d8981 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
AnnaBridge 156:ff21514d8981 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
AnnaBridge 156:ff21514d8981 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
AnnaBridge 156:ff21514d8981 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
AnnaBridge 156:ff21514d8981 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
AnnaBridge 156:ff21514d8981 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
AnnaBridge 156:ff21514d8981 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
AnnaBridge 156:ff21514d8981 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
AnnaBridge 156:ff21514d8981 34 POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 156:ff21514d8981 35 ---------------------------------------------------------------------------*/
AnnaBridge 156:ff21514d8981 36
AnnaBridge 156:ff21514d8981 37
AnnaBridge 156:ff21514d8981 38 #ifndef __CORE_CMINSTR_H
AnnaBridge 156:ff21514d8981 39 #define __CORE_CMINSTR_H
AnnaBridge 156:ff21514d8981 40
AnnaBridge 156:ff21514d8981 41
AnnaBridge 156:ff21514d8981 42 /* ########################## Core Instruction Access ######################### */
AnnaBridge 156:ff21514d8981 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
AnnaBridge 156:ff21514d8981 44 Access to dedicated instructions
AnnaBridge 156:ff21514d8981 45 @{
AnnaBridge 156:ff21514d8981 46 */
AnnaBridge 156:ff21514d8981 47
AnnaBridge 156:ff21514d8981 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
AnnaBridge 156:ff21514d8981 49 /* ARM armcc specific functions */
AnnaBridge 156:ff21514d8981 50
AnnaBridge 156:ff21514d8981 51 #if (__ARMCC_VERSION < 400677)
AnnaBridge 156:ff21514d8981 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
AnnaBridge 156:ff21514d8981 53 #endif
AnnaBridge 156:ff21514d8981 54
AnnaBridge 156:ff21514d8981 55
AnnaBridge 156:ff21514d8981 56 /** \brief No Operation
AnnaBridge 156:ff21514d8981 57
AnnaBridge 156:ff21514d8981 58 No Operation does nothing. This instruction can be used for code alignment purposes.
AnnaBridge 156:ff21514d8981 59 */
AnnaBridge 156:ff21514d8981 60 #define __NOP __nop
AnnaBridge 156:ff21514d8981 61
AnnaBridge 156:ff21514d8981 62
AnnaBridge 156:ff21514d8981 63 /** \brief Wait For Interrupt
AnnaBridge 156:ff21514d8981 64
AnnaBridge 156:ff21514d8981 65 Wait For Interrupt is a hint instruction that suspends execution
AnnaBridge 156:ff21514d8981 66 until one of a number of events occurs.
AnnaBridge 156:ff21514d8981 67 */
AnnaBridge 156:ff21514d8981 68 #define __WFI __wfi
AnnaBridge 156:ff21514d8981 69
AnnaBridge 156:ff21514d8981 70
AnnaBridge 156:ff21514d8981 71 /** \brief Wait For Event
AnnaBridge 156:ff21514d8981 72
AnnaBridge 156:ff21514d8981 73 Wait For Event is a hint instruction that permits the processor to enter
AnnaBridge 156:ff21514d8981 74 a low-power state until one of a number of events occurs.
AnnaBridge 156:ff21514d8981 75 */
AnnaBridge 156:ff21514d8981 76 #define __WFE __wfe
AnnaBridge 156:ff21514d8981 77
AnnaBridge 156:ff21514d8981 78
AnnaBridge 156:ff21514d8981 79 /** \brief Send Event
AnnaBridge 156:ff21514d8981 80
AnnaBridge 156:ff21514d8981 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
AnnaBridge 156:ff21514d8981 82 */
AnnaBridge 156:ff21514d8981 83 #define __SEV __sev
AnnaBridge 156:ff21514d8981 84
AnnaBridge 156:ff21514d8981 85
AnnaBridge 156:ff21514d8981 86 /** \brief Instruction Synchronization Barrier
AnnaBridge 156:ff21514d8981 87
AnnaBridge 156:ff21514d8981 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
AnnaBridge 156:ff21514d8981 89 so that all instructions following the ISB are fetched from cache or
AnnaBridge 156:ff21514d8981 90 memory, after the instruction has been completed.
AnnaBridge 156:ff21514d8981 91 */
AnnaBridge 156:ff21514d8981 92 #define __ISB() do {\
AnnaBridge 156:ff21514d8981 93 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 94 __isb(0xF);\
AnnaBridge 156:ff21514d8981 95 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 96 } while (0)
AnnaBridge 156:ff21514d8981 97
AnnaBridge 156:ff21514d8981 98 /** \brief Data Synchronization Barrier
AnnaBridge 156:ff21514d8981 99
AnnaBridge 156:ff21514d8981 100 This function acts as a special kind of Data Memory Barrier.
AnnaBridge 156:ff21514d8981 101 It completes when all explicit memory accesses before this instruction complete.
AnnaBridge 156:ff21514d8981 102 */
AnnaBridge 156:ff21514d8981 103 #define __DSB() do {\
AnnaBridge 156:ff21514d8981 104 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 105 __dsb(0xF);\
AnnaBridge 156:ff21514d8981 106 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 107 } while (0)
AnnaBridge 156:ff21514d8981 108
AnnaBridge 156:ff21514d8981 109 /** \brief Data Memory Barrier
AnnaBridge 156:ff21514d8981 110
AnnaBridge 156:ff21514d8981 111 This function ensures the apparent order of the explicit memory operations before
AnnaBridge 156:ff21514d8981 112 and after the instruction, without ensuring their completion.
AnnaBridge 156:ff21514d8981 113 */
AnnaBridge 156:ff21514d8981 114 #define __DMB() do {\
AnnaBridge 156:ff21514d8981 115 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 116 __dmb(0xF);\
AnnaBridge 156:ff21514d8981 117 __schedule_barrier();\
AnnaBridge 156:ff21514d8981 118 } while (0)
AnnaBridge 156:ff21514d8981 119
AnnaBridge 156:ff21514d8981 120 /** \brief Reverse byte order (32 bit)
AnnaBridge 156:ff21514d8981 121
AnnaBridge 156:ff21514d8981 122 This function reverses the byte order in integer value.
AnnaBridge 156:ff21514d8981 123
AnnaBridge 156:ff21514d8981 124 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 125 \return Reversed value
AnnaBridge 156:ff21514d8981 126 */
AnnaBridge 156:ff21514d8981 127 #define __REV __rev
AnnaBridge 156:ff21514d8981 128
AnnaBridge 156:ff21514d8981 129
AnnaBridge 156:ff21514d8981 130 /** \brief Reverse byte order (16 bit)
AnnaBridge 156:ff21514d8981 131
AnnaBridge 156:ff21514d8981 132 This function reverses the byte order in two unsigned short values.
AnnaBridge 156:ff21514d8981 133
AnnaBridge 156:ff21514d8981 134 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 135 \return Reversed value
AnnaBridge 156:ff21514d8981 136 */
AnnaBridge 156:ff21514d8981 137 #ifndef __NO_EMBEDDED_ASM
AnnaBridge 156:ff21514d8981 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
AnnaBridge 156:ff21514d8981 139 {
AnnaBridge 156:ff21514d8981 140 rev16 r0, r0
AnnaBridge 156:ff21514d8981 141 bx lr
AnnaBridge 156:ff21514d8981 142 }
AnnaBridge 156:ff21514d8981 143 #endif
AnnaBridge 156:ff21514d8981 144
AnnaBridge 156:ff21514d8981 145 /** \brief Reverse byte order in signed short value
AnnaBridge 156:ff21514d8981 146
AnnaBridge 156:ff21514d8981 147 This function reverses the byte order in a signed short value with sign extension to integer.
AnnaBridge 156:ff21514d8981 148
AnnaBridge 156:ff21514d8981 149 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 150 \return Reversed value
AnnaBridge 156:ff21514d8981 151 */
AnnaBridge 156:ff21514d8981 152 #ifndef __NO_EMBEDDED_ASM
AnnaBridge 156:ff21514d8981 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
AnnaBridge 156:ff21514d8981 154 {
AnnaBridge 156:ff21514d8981 155 revsh r0, r0
AnnaBridge 156:ff21514d8981 156 bx lr
AnnaBridge 156:ff21514d8981 157 }
AnnaBridge 156:ff21514d8981 158 #endif
AnnaBridge 156:ff21514d8981 159
AnnaBridge 156:ff21514d8981 160
AnnaBridge 156:ff21514d8981 161 /** \brief Rotate Right in unsigned value (32 bit)
AnnaBridge 156:ff21514d8981 162
AnnaBridge 156:ff21514d8981 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
AnnaBridge 156:ff21514d8981 164
AnnaBridge 156:ff21514d8981 165 \param [in] value Value to rotate
AnnaBridge 156:ff21514d8981 166 \param [in] value Number of Bits to rotate
AnnaBridge 156:ff21514d8981 167 \return Rotated value
AnnaBridge 156:ff21514d8981 168 */
AnnaBridge 156:ff21514d8981 169 #define __ROR __ror
AnnaBridge 156:ff21514d8981 170
AnnaBridge 156:ff21514d8981 171
AnnaBridge 156:ff21514d8981 172 /** \brief Breakpoint
AnnaBridge 156:ff21514d8981 173
AnnaBridge 156:ff21514d8981 174 This function causes the processor to enter Debug state.
AnnaBridge 156:ff21514d8981 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
AnnaBridge 156:ff21514d8981 176
AnnaBridge 156:ff21514d8981 177 \param [in] value is ignored by the processor.
AnnaBridge 156:ff21514d8981 178 If required, a debugger can use it to store additional information about the breakpoint.
AnnaBridge 156:ff21514d8981 179 */
AnnaBridge 156:ff21514d8981 180 #define __BKPT(value) __breakpoint(value)
AnnaBridge 156:ff21514d8981 181
AnnaBridge 156:ff21514d8981 182
AnnaBridge 156:ff21514d8981 183 /** \brief Reverse bit order of value
AnnaBridge 156:ff21514d8981 184
AnnaBridge 156:ff21514d8981 185 This function reverses the bit order of the given value.
AnnaBridge 156:ff21514d8981 186
AnnaBridge 156:ff21514d8981 187 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 188 \return Reversed value
AnnaBridge 156:ff21514d8981 189 */
AnnaBridge 156:ff21514d8981 190 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
AnnaBridge 156:ff21514d8981 191 #define __RBIT __rbit
AnnaBridge 156:ff21514d8981 192 #else
AnnaBridge 156:ff21514d8981 193 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
AnnaBridge 156:ff21514d8981 194 {
AnnaBridge 156:ff21514d8981 195 uint32_t result;
AnnaBridge 156:ff21514d8981 196 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
AnnaBridge 156:ff21514d8981 197
AnnaBridge 156:ff21514d8981 198 result = value; // r will be reversed bits of v; first get LSB of v
AnnaBridge 156:ff21514d8981 199 for (value >>= 1; value; value >>= 1)
AnnaBridge 156:ff21514d8981 200 {
AnnaBridge 156:ff21514d8981 201 result <<= 1;
AnnaBridge 156:ff21514d8981 202 result |= value & 1;
AnnaBridge 156:ff21514d8981 203 s--;
AnnaBridge 156:ff21514d8981 204 }
AnnaBridge 156:ff21514d8981 205 result <<= s; // shift when v's highest bits are zero
AnnaBridge 156:ff21514d8981 206 return(result);
AnnaBridge 156:ff21514d8981 207 }
AnnaBridge 156:ff21514d8981 208 #endif
AnnaBridge 156:ff21514d8981 209
AnnaBridge 156:ff21514d8981 210
AnnaBridge 156:ff21514d8981 211 /** \brief Count leading zeros
AnnaBridge 156:ff21514d8981 212
AnnaBridge 156:ff21514d8981 213 This function counts the number of leading zeros of a data value.
AnnaBridge 156:ff21514d8981 214
AnnaBridge 156:ff21514d8981 215 \param [in] value Value to count the leading zeros
AnnaBridge 156:ff21514d8981 216 \return number of leading zeros in value
AnnaBridge 156:ff21514d8981 217 */
AnnaBridge 156:ff21514d8981 218 #define __CLZ __clz
AnnaBridge 156:ff21514d8981 219
AnnaBridge 156:ff21514d8981 220
AnnaBridge 156:ff21514d8981 221 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
AnnaBridge 156:ff21514d8981 222
AnnaBridge 156:ff21514d8981 223 /** \brief LDR Exclusive (8 bit)
AnnaBridge 156:ff21514d8981 224
AnnaBridge 156:ff21514d8981 225 This function executes a exclusive LDR instruction for 8 bit value.
AnnaBridge 156:ff21514d8981 226
AnnaBridge 156:ff21514d8981 227 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 228 \return value of type uint8_t at (*ptr)
AnnaBridge 156:ff21514d8981 229 */
AnnaBridge 156:ff21514d8981 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
AnnaBridge 156:ff21514d8981 231
AnnaBridge 156:ff21514d8981 232
AnnaBridge 156:ff21514d8981 233 /** \brief LDR Exclusive (16 bit)
AnnaBridge 156:ff21514d8981 234
AnnaBridge 156:ff21514d8981 235 This function executes a exclusive LDR instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 236
AnnaBridge 156:ff21514d8981 237 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 238 \return value of type uint16_t at (*ptr)
AnnaBridge 156:ff21514d8981 239 */
AnnaBridge 156:ff21514d8981 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
AnnaBridge 156:ff21514d8981 241
AnnaBridge 156:ff21514d8981 242
AnnaBridge 156:ff21514d8981 243 /** \brief LDR Exclusive (32 bit)
AnnaBridge 156:ff21514d8981 244
AnnaBridge 156:ff21514d8981 245 This function executes a exclusive LDR instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 246
AnnaBridge 156:ff21514d8981 247 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 248 \return value of type uint32_t at (*ptr)
AnnaBridge 156:ff21514d8981 249 */
AnnaBridge 156:ff21514d8981 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
AnnaBridge 156:ff21514d8981 251
AnnaBridge 156:ff21514d8981 252
AnnaBridge 156:ff21514d8981 253 /** \brief STR Exclusive (8 bit)
AnnaBridge 156:ff21514d8981 254
AnnaBridge 156:ff21514d8981 255 This function executes a exclusive STR instruction for 8 bit values.
AnnaBridge 156:ff21514d8981 256
AnnaBridge 156:ff21514d8981 257 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 258 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 259 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 260 \return 1 Function failed
AnnaBridge 156:ff21514d8981 261 */
AnnaBridge 156:ff21514d8981 262 #define __STREXB(value, ptr) __strex(value, ptr)
AnnaBridge 156:ff21514d8981 263
AnnaBridge 156:ff21514d8981 264
AnnaBridge 156:ff21514d8981 265 /** \brief STR Exclusive (16 bit)
AnnaBridge 156:ff21514d8981 266
AnnaBridge 156:ff21514d8981 267 This function executes a exclusive STR instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 268
AnnaBridge 156:ff21514d8981 269 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 270 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 271 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 272 \return 1 Function failed
AnnaBridge 156:ff21514d8981 273 */
AnnaBridge 156:ff21514d8981 274 #define __STREXH(value, ptr) __strex(value, ptr)
AnnaBridge 156:ff21514d8981 275
AnnaBridge 156:ff21514d8981 276
AnnaBridge 156:ff21514d8981 277 /** \brief STR Exclusive (32 bit)
AnnaBridge 156:ff21514d8981 278
AnnaBridge 156:ff21514d8981 279 This function executes a exclusive STR instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 280
AnnaBridge 156:ff21514d8981 281 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 282 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 283 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 284 \return 1 Function failed
AnnaBridge 156:ff21514d8981 285 */
AnnaBridge 156:ff21514d8981 286 #define __STREXW(value, ptr) __strex(value, ptr)
AnnaBridge 156:ff21514d8981 287
AnnaBridge 156:ff21514d8981 288
AnnaBridge 156:ff21514d8981 289 /** \brief Remove the exclusive lock
AnnaBridge 156:ff21514d8981 290
AnnaBridge 156:ff21514d8981 291 This function removes the exclusive lock which is created by LDREX.
AnnaBridge 156:ff21514d8981 292
AnnaBridge 156:ff21514d8981 293 */
AnnaBridge 156:ff21514d8981 294 #define __CLREX __clrex
AnnaBridge 156:ff21514d8981 295
AnnaBridge 156:ff21514d8981 296
AnnaBridge 156:ff21514d8981 297 /** \brief Signed Saturate
AnnaBridge 156:ff21514d8981 298
AnnaBridge 156:ff21514d8981 299 This function saturates a signed value.
AnnaBridge 156:ff21514d8981 300
AnnaBridge 156:ff21514d8981 301 \param [in] value Value to be saturated
AnnaBridge 156:ff21514d8981 302 \param [in] sat Bit position to saturate to (1..32)
AnnaBridge 156:ff21514d8981 303 \return Saturated value
AnnaBridge 156:ff21514d8981 304 */
AnnaBridge 156:ff21514d8981 305 #define __SSAT __ssat
AnnaBridge 156:ff21514d8981 306
AnnaBridge 156:ff21514d8981 307
AnnaBridge 156:ff21514d8981 308 /** \brief Unsigned Saturate
AnnaBridge 156:ff21514d8981 309
AnnaBridge 156:ff21514d8981 310 This function saturates an unsigned value.
AnnaBridge 156:ff21514d8981 311
AnnaBridge 156:ff21514d8981 312 \param [in] value Value to be saturated
AnnaBridge 156:ff21514d8981 313 \param [in] sat Bit position to saturate to (0..31)
AnnaBridge 156:ff21514d8981 314 \return Saturated value
AnnaBridge 156:ff21514d8981 315 */
AnnaBridge 156:ff21514d8981 316 #define __USAT __usat
AnnaBridge 156:ff21514d8981 317
AnnaBridge 156:ff21514d8981 318
AnnaBridge 156:ff21514d8981 319 /** \brief Rotate Right with Extend (32 bit)
AnnaBridge 156:ff21514d8981 320
AnnaBridge 156:ff21514d8981 321 This function moves each bit of a bitstring right by one bit.
AnnaBridge 156:ff21514d8981 322 The carry input is shifted in at the left end of the bitstring.
AnnaBridge 156:ff21514d8981 323
AnnaBridge 156:ff21514d8981 324 \param [in] value Value to rotate
AnnaBridge 156:ff21514d8981 325 \return Rotated value
AnnaBridge 156:ff21514d8981 326 */
AnnaBridge 156:ff21514d8981 327 #ifndef __NO_EMBEDDED_ASM
AnnaBridge 156:ff21514d8981 328 __attribute__((section(".rrx_text"))) __STATIC_INLINE __ASM uint32_t __RRX(uint32_t value)
AnnaBridge 156:ff21514d8981 329 {
AnnaBridge 156:ff21514d8981 330 rrx r0, r0
AnnaBridge 156:ff21514d8981 331 bx lr
AnnaBridge 156:ff21514d8981 332 }
AnnaBridge 156:ff21514d8981 333 #endif
AnnaBridge 156:ff21514d8981 334
AnnaBridge 156:ff21514d8981 335
AnnaBridge 156:ff21514d8981 336 /** \brief LDRT Unprivileged (8 bit)
AnnaBridge 156:ff21514d8981 337
AnnaBridge 156:ff21514d8981 338 This function executes a Unprivileged LDRT instruction for 8 bit value.
AnnaBridge 156:ff21514d8981 339
AnnaBridge 156:ff21514d8981 340 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 341 \return value of type uint8_t at (*ptr)
AnnaBridge 156:ff21514d8981 342 */
AnnaBridge 156:ff21514d8981 343 #define __LDRBT(ptr) ((uint8_t ) __ldrt(ptr))
AnnaBridge 156:ff21514d8981 344
AnnaBridge 156:ff21514d8981 345
AnnaBridge 156:ff21514d8981 346 /** \brief LDRT Unprivileged (16 bit)
AnnaBridge 156:ff21514d8981 347
AnnaBridge 156:ff21514d8981 348 This function executes a Unprivileged LDRT instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 349
AnnaBridge 156:ff21514d8981 350 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 351 \return value of type uint16_t at (*ptr)
AnnaBridge 156:ff21514d8981 352 */
AnnaBridge 156:ff21514d8981 353 #define __LDRHT(ptr) ((uint16_t) __ldrt(ptr))
AnnaBridge 156:ff21514d8981 354
AnnaBridge 156:ff21514d8981 355
AnnaBridge 156:ff21514d8981 356 /** \brief LDRT Unprivileged (32 bit)
AnnaBridge 156:ff21514d8981 357
AnnaBridge 156:ff21514d8981 358 This function executes a Unprivileged LDRT instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 359
AnnaBridge 156:ff21514d8981 360 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 361 \return value of type uint32_t at (*ptr)
AnnaBridge 156:ff21514d8981 362 */
AnnaBridge 156:ff21514d8981 363 #define __LDRT(ptr) ((uint32_t ) __ldrt(ptr))
AnnaBridge 156:ff21514d8981 364
AnnaBridge 156:ff21514d8981 365
AnnaBridge 156:ff21514d8981 366 /** \brief STRT Unprivileged (8 bit)
AnnaBridge 156:ff21514d8981 367
AnnaBridge 156:ff21514d8981 368 This function executes a Unprivileged STRT instruction for 8 bit values.
AnnaBridge 156:ff21514d8981 369
AnnaBridge 156:ff21514d8981 370 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 371 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 372 */
AnnaBridge 156:ff21514d8981 373 #define __STRBT(value, ptr) __strt(value, ptr)
AnnaBridge 156:ff21514d8981 374
AnnaBridge 156:ff21514d8981 375
AnnaBridge 156:ff21514d8981 376 /** \brief STRT Unprivileged (16 bit)
AnnaBridge 156:ff21514d8981 377
AnnaBridge 156:ff21514d8981 378 This function executes a Unprivileged STRT instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 379
AnnaBridge 156:ff21514d8981 380 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 381 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 382 */
AnnaBridge 156:ff21514d8981 383 #define __STRHT(value, ptr) __strt(value, ptr)
AnnaBridge 156:ff21514d8981 384
AnnaBridge 156:ff21514d8981 385
AnnaBridge 156:ff21514d8981 386 /** \brief STRT Unprivileged (32 bit)
AnnaBridge 156:ff21514d8981 387
AnnaBridge 156:ff21514d8981 388 This function executes a Unprivileged STRT instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 389
AnnaBridge 156:ff21514d8981 390 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 391 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 392 */
AnnaBridge 156:ff21514d8981 393 #define __STRT(value, ptr) __strt(value, ptr)
AnnaBridge 156:ff21514d8981 394
AnnaBridge 156:ff21514d8981 395 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
AnnaBridge 156:ff21514d8981 396
AnnaBridge 156:ff21514d8981 397
AnnaBridge 156:ff21514d8981 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
AnnaBridge 156:ff21514d8981 399 /* GNU gcc specific functions */
AnnaBridge 156:ff21514d8981 400
AnnaBridge 156:ff21514d8981 401 /* Define macros for porting to both thumb1 and thumb2.
AnnaBridge 156:ff21514d8981 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
AnnaBridge 156:ff21514d8981 403 * Otherwise, use general registers, specified by constrant "r" */
AnnaBridge 156:ff21514d8981 404 #if defined (__thumb__) && !defined (__thumb2__)
AnnaBridge 156:ff21514d8981 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
AnnaBridge 156:ff21514d8981 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
AnnaBridge 156:ff21514d8981 407 #else
AnnaBridge 156:ff21514d8981 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
AnnaBridge 156:ff21514d8981 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
AnnaBridge 156:ff21514d8981 410 #endif
AnnaBridge 156:ff21514d8981 411
AnnaBridge 156:ff21514d8981 412 /** \brief No Operation
AnnaBridge 156:ff21514d8981 413
AnnaBridge 156:ff21514d8981 414 No Operation does nothing. This instruction can be used for code alignment purposes.
AnnaBridge 156:ff21514d8981 415 */
AnnaBridge 156:ff21514d8981 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
AnnaBridge 156:ff21514d8981 417 {
AnnaBridge 156:ff21514d8981 418 __ASM volatile ("nop");
AnnaBridge 156:ff21514d8981 419 }
AnnaBridge 156:ff21514d8981 420
AnnaBridge 156:ff21514d8981 421
AnnaBridge 156:ff21514d8981 422 /** \brief Wait For Interrupt
AnnaBridge 156:ff21514d8981 423
AnnaBridge 156:ff21514d8981 424 Wait For Interrupt is a hint instruction that suspends execution
AnnaBridge 156:ff21514d8981 425 until one of a number of events occurs.
AnnaBridge 156:ff21514d8981 426 */
AnnaBridge 156:ff21514d8981 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
AnnaBridge 156:ff21514d8981 428 {
AnnaBridge 156:ff21514d8981 429 __ASM volatile ("wfi");
AnnaBridge 156:ff21514d8981 430 }
AnnaBridge 156:ff21514d8981 431
AnnaBridge 156:ff21514d8981 432
AnnaBridge 156:ff21514d8981 433 /** \brief Wait For Event
AnnaBridge 156:ff21514d8981 434
AnnaBridge 156:ff21514d8981 435 Wait For Event is a hint instruction that permits the processor to enter
AnnaBridge 156:ff21514d8981 436 a low-power state until one of a number of events occurs.
AnnaBridge 156:ff21514d8981 437 */
AnnaBridge 156:ff21514d8981 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
AnnaBridge 156:ff21514d8981 439 {
AnnaBridge 156:ff21514d8981 440 __ASM volatile ("wfe");
AnnaBridge 156:ff21514d8981 441 }
AnnaBridge 156:ff21514d8981 442
AnnaBridge 156:ff21514d8981 443
AnnaBridge 156:ff21514d8981 444 /** \brief Send Event
AnnaBridge 156:ff21514d8981 445
AnnaBridge 156:ff21514d8981 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
AnnaBridge 156:ff21514d8981 447 */
AnnaBridge 156:ff21514d8981 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
AnnaBridge 156:ff21514d8981 449 {
AnnaBridge 156:ff21514d8981 450 __ASM volatile ("sev");
AnnaBridge 156:ff21514d8981 451 }
AnnaBridge 156:ff21514d8981 452
AnnaBridge 156:ff21514d8981 453
AnnaBridge 156:ff21514d8981 454 /** \brief Instruction Synchronization Barrier
AnnaBridge 156:ff21514d8981 455
AnnaBridge 156:ff21514d8981 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
AnnaBridge 156:ff21514d8981 457 so that all instructions following the ISB are fetched from cache or
AnnaBridge 156:ff21514d8981 458 memory, after the instruction has been completed.
AnnaBridge 156:ff21514d8981 459 */
AnnaBridge 156:ff21514d8981 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
AnnaBridge 156:ff21514d8981 461 {
AnnaBridge 156:ff21514d8981 462 __ASM volatile ("isb 0xF":::"memory");
AnnaBridge 156:ff21514d8981 463 }
AnnaBridge 156:ff21514d8981 464
AnnaBridge 156:ff21514d8981 465
AnnaBridge 156:ff21514d8981 466 /** \brief Data Synchronization Barrier
AnnaBridge 156:ff21514d8981 467
AnnaBridge 156:ff21514d8981 468 This function acts as a special kind of Data Memory Barrier.
AnnaBridge 156:ff21514d8981 469 It completes when all explicit memory accesses before this instruction complete.
AnnaBridge 156:ff21514d8981 470 */
AnnaBridge 156:ff21514d8981 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
AnnaBridge 156:ff21514d8981 472 {
AnnaBridge 156:ff21514d8981 473 __ASM volatile ("dsb 0xF":::"memory");
AnnaBridge 156:ff21514d8981 474 }
AnnaBridge 156:ff21514d8981 475
AnnaBridge 156:ff21514d8981 476
AnnaBridge 156:ff21514d8981 477 /** \brief Data Memory Barrier
AnnaBridge 156:ff21514d8981 478
AnnaBridge 156:ff21514d8981 479 This function ensures the apparent order of the explicit memory operations before
AnnaBridge 156:ff21514d8981 480 and after the instruction, without ensuring their completion.
AnnaBridge 156:ff21514d8981 481 */
AnnaBridge 156:ff21514d8981 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
AnnaBridge 156:ff21514d8981 483 {
AnnaBridge 156:ff21514d8981 484 __ASM volatile ("dmb 0xF":::"memory");
AnnaBridge 156:ff21514d8981 485 }
AnnaBridge 156:ff21514d8981 486
AnnaBridge 156:ff21514d8981 487
AnnaBridge 156:ff21514d8981 488 /** \brief Reverse byte order (32 bit)
AnnaBridge 156:ff21514d8981 489
AnnaBridge 156:ff21514d8981 490 This function reverses the byte order in integer value.
AnnaBridge 156:ff21514d8981 491
AnnaBridge 156:ff21514d8981 492 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 493 \return Reversed value
AnnaBridge 156:ff21514d8981 494 */
AnnaBridge 156:ff21514d8981 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
AnnaBridge 156:ff21514d8981 496 {
AnnaBridge 156:ff21514d8981 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
AnnaBridge 156:ff21514d8981 498 return __builtin_bswap32(value);
AnnaBridge 156:ff21514d8981 499 #else
AnnaBridge 156:ff21514d8981 500 uint32_t result;
AnnaBridge 156:ff21514d8981 501
AnnaBridge 156:ff21514d8981 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
AnnaBridge 156:ff21514d8981 503 return(result);
AnnaBridge 156:ff21514d8981 504 #endif
AnnaBridge 156:ff21514d8981 505 }
AnnaBridge 156:ff21514d8981 506
AnnaBridge 156:ff21514d8981 507
AnnaBridge 156:ff21514d8981 508 /** \brief Reverse byte order (16 bit)
AnnaBridge 156:ff21514d8981 509
AnnaBridge 156:ff21514d8981 510 This function reverses the byte order in two unsigned short values.
AnnaBridge 156:ff21514d8981 511
AnnaBridge 156:ff21514d8981 512 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 513 \return Reversed value
AnnaBridge 156:ff21514d8981 514 */
AnnaBridge 156:ff21514d8981 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
AnnaBridge 156:ff21514d8981 516 {
AnnaBridge 156:ff21514d8981 517 uint32_t result;
AnnaBridge 156:ff21514d8981 518
AnnaBridge 156:ff21514d8981 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
AnnaBridge 156:ff21514d8981 520 return(result);
AnnaBridge 156:ff21514d8981 521 }
AnnaBridge 156:ff21514d8981 522
AnnaBridge 156:ff21514d8981 523
AnnaBridge 156:ff21514d8981 524 /** \brief Reverse byte order in signed short value
AnnaBridge 156:ff21514d8981 525
AnnaBridge 156:ff21514d8981 526 This function reverses the byte order in a signed short value with sign extension to integer.
AnnaBridge 156:ff21514d8981 527
AnnaBridge 156:ff21514d8981 528 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 529 \return Reversed value
AnnaBridge 156:ff21514d8981 530 */
AnnaBridge 156:ff21514d8981 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
AnnaBridge 156:ff21514d8981 532 {
AnnaBridge 156:ff21514d8981 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
AnnaBridge 156:ff21514d8981 534 return (short)__builtin_bswap16(value);
AnnaBridge 156:ff21514d8981 535 #else
AnnaBridge 156:ff21514d8981 536 uint32_t result;
AnnaBridge 156:ff21514d8981 537
AnnaBridge 156:ff21514d8981 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
AnnaBridge 156:ff21514d8981 539 return(result);
AnnaBridge 156:ff21514d8981 540 #endif
AnnaBridge 156:ff21514d8981 541 }
AnnaBridge 156:ff21514d8981 542
AnnaBridge 156:ff21514d8981 543
AnnaBridge 156:ff21514d8981 544 /** \brief Rotate Right in unsigned value (32 bit)
AnnaBridge 156:ff21514d8981 545
AnnaBridge 156:ff21514d8981 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
AnnaBridge 156:ff21514d8981 547
AnnaBridge 156:ff21514d8981 548 \param [in] value Value to rotate
AnnaBridge 156:ff21514d8981 549 \param [in] value Number of Bits to rotate
AnnaBridge 156:ff21514d8981 550 \return Rotated value
AnnaBridge 156:ff21514d8981 551 */
AnnaBridge 156:ff21514d8981 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
AnnaBridge 156:ff21514d8981 553 {
AnnaBridge 156:ff21514d8981 554 return (op1 >> op2) | (op1 << (32 - op2));
AnnaBridge 156:ff21514d8981 555 }
AnnaBridge 156:ff21514d8981 556
AnnaBridge 156:ff21514d8981 557
AnnaBridge 156:ff21514d8981 558 /** \brief Breakpoint
AnnaBridge 156:ff21514d8981 559
AnnaBridge 156:ff21514d8981 560 This function causes the processor to enter Debug state.
AnnaBridge 156:ff21514d8981 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
AnnaBridge 156:ff21514d8981 562
AnnaBridge 156:ff21514d8981 563 \param [in] value is ignored by the processor.
AnnaBridge 156:ff21514d8981 564 If required, a debugger can use it to store additional information about the breakpoint.
AnnaBridge 156:ff21514d8981 565 */
AnnaBridge 156:ff21514d8981 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
AnnaBridge 156:ff21514d8981 567
AnnaBridge 156:ff21514d8981 568
AnnaBridge 156:ff21514d8981 569 /** \brief Reverse bit order of value
AnnaBridge 156:ff21514d8981 570
AnnaBridge 156:ff21514d8981 571 This function reverses the bit order of the given value.
AnnaBridge 156:ff21514d8981 572
AnnaBridge 156:ff21514d8981 573 \param [in] value Value to reverse
AnnaBridge 156:ff21514d8981 574 \return Reversed value
AnnaBridge 156:ff21514d8981 575 */
AnnaBridge 156:ff21514d8981 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
AnnaBridge 156:ff21514d8981 577 {
AnnaBridge 156:ff21514d8981 578 uint32_t result;
AnnaBridge 156:ff21514d8981 579
AnnaBridge 156:ff21514d8981 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
AnnaBridge 156:ff21514d8981 581 __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) );
AnnaBridge 156:ff21514d8981 582 #else
AnnaBridge 156:ff21514d8981 583 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
AnnaBridge 156:ff21514d8981 584
AnnaBridge 156:ff21514d8981 585 result = value; // r will be reversed bits of v; first get LSB of v
AnnaBridge 156:ff21514d8981 586 for (value >>= 1; value; value >>= 1)
AnnaBridge 156:ff21514d8981 587 {
AnnaBridge 156:ff21514d8981 588 result <<= 1;
AnnaBridge 156:ff21514d8981 589 result |= value & 1;
AnnaBridge 156:ff21514d8981 590 s--;
AnnaBridge 156:ff21514d8981 591 }
AnnaBridge 156:ff21514d8981 592 result <<= s; // shift when v's highest bits are zero
AnnaBridge 156:ff21514d8981 593 #endif
AnnaBridge 156:ff21514d8981 594 return(result);
AnnaBridge 156:ff21514d8981 595 }
AnnaBridge 156:ff21514d8981 596
AnnaBridge 156:ff21514d8981 597
AnnaBridge 156:ff21514d8981 598 /** \brief Count leading zeros
AnnaBridge 156:ff21514d8981 599
AnnaBridge 156:ff21514d8981 600 This function counts the number of leading zeros of a data value.
AnnaBridge 156:ff21514d8981 601
AnnaBridge 156:ff21514d8981 602 \param [in] value Value to count the leading zeros
AnnaBridge 156:ff21514d8981 603 \return number of leading zeros in value
AnnaBridge 156:ff21514d8981 604 */
AnnaBridge 156:ff21514d8981 605 #define __CLZ __builtin_clz
AnnaBridge 156:ff21514d8981 606
AnnaBridge 156:ff21514d8981 607
AnnaBridge 156:ff21514d8981 608 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
AnnaBridge 156:ff21514d8981 609
AnnaBridge 156:ff21514d8981 610 /** \brief LDR Exclusive (8 bit)
AnnaBridge 156:ff21514d8981 611
AnnaBridge 156:ff21514d8981 612 This function executes a exclusive LDR instruction for 8 bit value.
AnnaBridge 156:ff21514d8981 613
AnnaBridge 156:ff21514d8981 614 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 615 \return value of type uint8_t at (*ptr)
AnnaBridge 156:ff21514d8981 616 */
AnnaBridge 156:ff21514d8981 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
AnnaBridge 156:ff21514d8981 618 {
AnnaBridge 156:ff21514d8981 619 uint32_t result;
AnnaBridge 156:ff21514d8981 620
AnnaBridge 156:ff21514d8981 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
AnnaBridge 156:ff21514d8981 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 623 #else
AnnaBridge 156:ff21514d8981 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
AnnaBridge 156:ff21514d8981 625 accepted by assembler. So has to use following less efficient pattern.
AnnaBridge 156:ff21514d8981 626 */
AnnaBridge 156:ff21514d8981 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
AnnaBridge 156:ff21514d8981 628 #endif
AnnaBridge 156:ff21514d8981 629 return ((uint8_t) result); /* Add explicit type cast here */
AnnaBridge 156:ff21514d8981 630 }
AnnaBridge 156:ff21514d8981 631
AnnaBridge 156:ff21514d8981 632
AnnaBridge 156:ff21514d8981 633 /** \brief LDR Exclusive (16 bit)
AnnaBridge 156:ff21514d8981 634
AnnaBridge 156:ff21514d8981 635 This function executes a exclusive LDR instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 636
AnnaBridge 156:ff21514d8981 637 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 638 \return value of type uint16_t at (*ptr)
AnnaBridge 156:ff21514d8981 639 */
AnnaBridge 156:ff21514d8981 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
AnnaBridge 156:ff21514d8981 641 {
AnnaBridge 156:ff21514d8981 642 uint32_t result;
AnnaBridge 156:ff21514d8981 643
AnnaBridge 156:ff21514d8981 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
AnnaBridge 156:ff21514d8981 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 646 #else
AnnaBridge 156:ff21514d8981 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
AnnaBridge 156:ff21514d8981 648 accepted by assembler. So has to use following less efficient pattern.
AnnaBridge 156:ff21514d8981 649 */
AnnaBridge 156:ff21514d8981 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
AnnaBridge 156:ff21514d8981 651 #endif
AnnaBridge 156:ff21514d8981 652 return ((uint16_t) result); /* Add explicit type cast here */
AnnaBridge 156:ff21514d8981 653 }
AnnaBridge 156:ff21514d8981 654
AnnaBridge 156:ff21514d8981 655
AnnaBridge 156:ff21514d8981 656 /** \brief LDR Exclusive (32 bit)
AnnaBridge 156:ff21514d8981 657
AnnaBridge 156:ff21514d8981 658 This function executes a exclusive LDR instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 659
AnnaBridge 156:ff21514d8981 660 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 661 \return value of type uint32_t at (*ptr)
AnnaBridge 156:ff21514d8981 662 */
AnnaBridge 156:ff21514d8981 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
AnnaBridge 156:ff21514d8981 664 {
AnnaBridge 156:ff21514d8981 665 uint32_t result;
AnnaBridge 156:ff21514d8981 666
AnnaBridge 156:ff21514d8981 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 668 return(result);
AnnaBridge 156:ff21514d8981 669 }
AnnaBridge 156:ff21514d8981 670
AnnaBridge 156:ff21514d8981 671
AnnaBridge 156:ff21514d8981 672 /** \brief STR Exclusive (8 bit)
AnnaBridge 156:ff21514d8981 673
AnnaBridge 156:ff21514d8981 674 This function executes a exclusive STR instruction for 8 bit values.
AnnaBridge 156:ff21514d8981 675
AnnaBridge 156:ff21514d8981 676 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 677 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 678 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 679 \return 1 Function failed
AnnaBridge 156:ff21514d8981 680 */
AnnaBridge 156:ff21514d8981 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
AnnaBridge 156:ff21514d8981 682 {
AnnaBridge 156:ff21514d8981 683 uint32_t result;
AnnaBridge 156:ff21514d8981 684
AnnaBridge 156:ff21514d8981 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
AnnaBridge 156:ff21514d8981 686 return(result);
AnnaBridge 156:ff21514d8981 687 }
AnnaBridge 156:ff21514d8981 688
AnnaBridge 156:ff21514d8981 689
AnnaBridge 156:ff21514d8981 690 /** \brief STR Exclusive (16 bit)
AnnaBridge 156:ff21514d8981 691
AnnaBridge 156:ff21514d8981 692 This function executes a exclusive STR instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 693
AnnaBridge 156:ff21514d8981 694 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 695 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 696 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 697 \return 1 Function failed
AnnaBridge 156:ff21514d8981 698 */
AnnaBridge 156:ff21514d8981 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
AnnaBridge 156:ff21514d8981 700 {
AnnaBridge 156:ff21514d8981 701 uint32_t result;
AnnaBridge 156:ff21514d8981 702
AnnaBridge 156:ff21514d8981 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
AnnaBridge 156:ff21514d8981 704 return(result);
AnnaBridge 156:ff21514d8981 705 }
AnnaBridge 156:ff21514d8981 706
AnnaBridge 156:ff21514d8981 707
AnnaBridge 156:ff21514d8981 708 /** \brief STR Exclusive (32 bit)
AnnaBridge 156:ff21514d8981 709
AnnaBridge 156:ff21514d8981 710 This function executes a exclusive STR instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 711
AnnaBridge 156:ff21514d8981 712 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 713 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 714 \return 0 Function succeeded
AnnaBridge 156:ff21514d8981 715 \return 1 Function failed
AnnaBridge 156:ff21514d8981 716 */
AnnaBridge 156:ff21514d8981 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
AnnaBridge 156:ff21514d8981 718 {
AnnaBridge 156:ff21514d8981 719 uint32_t result;
AnnaBridge 156:ff21514d8981 720
AnnaBridge 156:ff21514d8981 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
AnnaBridge 156:ff21514d8981 722 return(result);
AnnaBridge 156:ff21514d8981 723 }
AnnaBridge 156:ff21514d8981 724
AnnaBridge 156:ff21514d8981 725
AnnaBridge 156:ff21514d8981 726 /** \brief Remove the exclusive lock
AnnaBridge 156:ff21514d8981 727
AnnaBridge 156:ff21514d8981 728 This function removes the exclusive lock which is created by LDREX.
AnnaBridge 156:ff21514d8981 729
AnnaBridge 156:ff21514d8981 730 */
AnnaBridge 156:ff21514d8981 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
AnnaBridge 156:ff21514d8981 732 {
AnnaBridge 156:ff21514d8981 733 __ASM volatile ("clrex" ::: "memory");
AnnaBridge 156:ff21514d8981 734 }
AnnaBridge 156:ff21514d8981 735
AnnaBridge 156:ff21514d8981 736
AnnaBridge 156:ff21514d8981 737 /** \brief Signed Saturate
AnnaBridge 156:ff21514d8981 738
AnnaBridge 156:ff21514d8981 739 This function saturates a signed value.
AnnaBridge 156:ff21514d8981 740
AnnaBridge 156:ff21514d8981 741 \param [in] value Value to be saturated
AnnaBridge 156:ff21514d8981 742 \param [in] sat Bit position to saturate to (1..32)
AnnaBridge 156:ff21514d8981 743 \return Saturated value
AnnaBridge 156:ff21514d8981 744 */
AnnaBridge 156:ff21514d8981 745 #define __SSAT(ARG1,ARG2) \
AnnaBridge 156:ff21514d8981 746 ({ \
AnnaBridge 156:ff21514d8981 747 uint32_t __RES, __ARG1 = (ARG1); \
AnnaBridge 156:ff21514d8981 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
AnnaBridge 156:ff21514d8981 749 __RES; \
AnnaBridge 156:ff21514d8981 750 })
AnnaBridge 156:ff21514d8981 751
AnnaBridge 156:ff21514d8981 752
AnnaBridge 156:ff21514d8981 753 /** \brief Unsigned Saturate
AnnaBridge 156:ff21514d8981 754
AnnaBridge 156:ff21514d8981 755 This function saturates an unsigned value.
AnnaBridge 156:ff21514d8981 756
AnnaBridge 156:ff21514d8981 757 \param [in] value Value to be saturated
AnnaBridge 156:ff21514d8981 758 \param [in] sat Bit position to saturate to (0..31)
AnnaBridge 156:ff21514d8981 759 \return Saturated value
AnnaBridge 156:ff21514d8981 760 */
AnnaBridge 156:ff21514d8981 761 #define __USAT(ARG1,ARG2) \
AnnaBridge 156:ff21514d8981 762 ({ \
AnnaBridge 156:ff21514d8981 763 uint32_t __RES, __ARG1 = (ARG1); \
AnnaBridge 156:ff21514d8981 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
AnnaBridge 156:ff21514d8981 765 __RES; \
AnnaBridge 156:ff21514d8981 766 })
AnnaBridge 156:ff21514d8981 767
AnnaBridge 156:ff21514d8981 768
AnnaBridge 156:ff21514d8981 769 /** \brief Rotate Right with Extend (32 bit)
AnnaBridge 156:ff21514d8981 770
AnnaBridge 156:ff21514d8981 771 This function moves each bit of a bitstring right by one bit.
AnnaBridge 156:ff21514d8981 772 The carry input is shifted in at the left end of the bitstring.
AnnaBridge 156:ff21514d8981 773
AnnaBridge 156:ff21514d8981 774 \param [in] value Value to rotate
AnnaBridge 156:ff21514d8981 775 \return Rotated value
AnnaBridge 156:ff21514d8981 776 */
AnnaBridge 156:ff21514d8981 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
AnnaBridge 156:ff21514d8981 778 {
AnnaBridge 156:ff21514d8981 779 uint32_t result;
AnnaBridge 156:ff21514d8981 780
AnnaBridge 156:ff21514d8981 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
AnnaBridge 156:ff21514d8981 782 return(result);
AnnaBridge 156:ff21514d8981 783 }
AnnaBridge 156:ff21514d8981 784
AnnaBridge 156:ff21514d8981 785
AnnaBridge 156:ff21514d8981 786 /** \brief LDRT Unprivileged (8 bit)
AnnaBridge 156:ff21514d8981 787
AnnaBridge 156:ff21514d8981 788 This function executes a Unprivileged LDRT instruction for 8 bit value.
AnnaBridge 156:ff21514d8981 789
AnnaBridge 156:ff21514d8981 790 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 791 \return value of type uint8_t at (*ptr)
AnnaBridge 156:ff21514d8981 792 */
AnnaBridge 156:ff21514d8981 793 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDRBT(volatile uint8_t *addr)
AnnaBridge 156:ff21514d8981 794 {
AnnaBridge 156:ff21514d8981 795 uint32_t result;
AnnaBridge 156:ff21514d8981 796
AnnaBridge 156:ff21514d8981 797 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
AnnaBridge 156:ff21514d8981 798 __ASM volatile ("ldrbt %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 799 #else
AnnaBridge 156:ff21514d8981 800 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
AnnaBridge 156:ff21514d8981 801 accepted by assembler. So has to use following less efficient pattern.
AnnaBridge 156:ff21514d8981 802 */
AnnaBridge 156:ff21514d8981 803 __ASM volatile ("ldrbt %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
AnnaBridge 156:ff21514d8981 804 #endif
AnnaBridge 156:ff21514d8981 805 return ((uint8_t) result); /* Add explicit type cast here */
AnnaBridge 156:ff21514d8981 806 }
AnnaBridge 156:ff21514d8981 807
AnnaBridge 156:ff21514d8981 808
AnnaBridge 156:ff21514d8981 809 /** \brief LDRT Unprivileged (16 bit)
AnnaBridge 156:ff21514d8981 810
AnnaBridge 156:ff21514d8981 811 This function executes a Unprivileged LDRT instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 812
AnnaBridge 156:ff21514d8981 813 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 814 \return value of type uint16_t at (*ptr)
AnnaBridge 156:ff21514d8981 815 */
AnnaBridge 156:ff21514d8981 816 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDRHT(volatile uint16_t *addr)
AnnaBridge 156:ff21514d8981 817 {
AnnaBridge 156:ff21514d8981 818 uint32_t result;
AnnaBridge 156:ff21514d8981 819
AnnaBridge 156:ff21514d8981 820 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
AnnaBridge 156:ff21514d8981 821 __ASM volatile ("ldrht %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 822 #else
AnnaBridge 156:ff21514d8981 823 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
AnnaBridge 156:ff21514d8981 824 accepted by assembler. So has to use following less efficient pattern.
AnnaBridge 156:ff21514d8981 825 */
AnnaBridge 156:ff21514d8981 826 __ASM volatile ("ldrht %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
AnnaBridge 156:ff21514d8981 827 #endif
AnnaBridge 156:ff21514d8981 828 return ((uint16_t) result); /* Add explicit type cast here */
AnnaBridge 156:ff21514d8981 829 }
AnnaBridge 156:ff21514d8981 830
AnnaBridge 156:ff21514d8981 831
AnnaBridge 156:ff21514d8981 832 /** \brief LDRT Unprivileged (32 bit)
AnnaBridge 156:ff21514d8981 833
AnnaBridge 156:ff21514d8981 834 This function executes a Unprivileged LDRT instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 835
AnnaBridge 156:ff21514d8981 836 \param [in] ptr Pointer to data
AnnaBridge 156:ff21514d8981 837 \return value of type uint32_t at (*ptr)
AnnaBridge 156:ff21514d8981 838 */
AnnaBridge 156:ff21514d8981 839 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDRT(volatile uint32_t *addr)
AnnaBridge 156:ff21514d8981 840 {
AnnaBridge 156:ff21514d8981 841 uint32_t result;
AnnaBridge 156:ff21514d8981 842
AnnaBridge 156:ff21514d8981 843 __ASM volatile ("ldrt %0, %1" : "=r" (result) : "Q" (*addr) );
AnnaBridge 156:ff21514d8981 844 return(result);
AnnaBridge 156:ff21514d8981 845 }
AnnaBridge 156:ff21514d8981 846
AnnaBridge 156:ff21514d8981 847
AnnaBridge 156:ff21514d8981 848 /** \brief STRT Unprivileged (8 bit)
AnnaBridge 156:ff21514d8981 849
AnnaBridge 156:ff21514d8981 850 This function executes a Unprivileged STRT instruction for 8 bit values.
AnnaBridge 156:ff21514d8981 851
AnnaBridge 156:ff21514d8981 852 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 853 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 854 */
AnnaBridge 156:ff21514d8981 855 __attribute__((always_inline)) __STATIC_INLINE void __STRBT(uint8_t value, volatile uint8_t *addr)
AnnaBridge 156:ff21514d8981 856 {
AnnaBridge 156:ff21514d8981 857 __ASM volatile ("strbt %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
AnnaBridge 156:ff21514d8981 858 }
AnnaBridge 156:ff21514d8981 859
AnnaBridge 156:ff21514d8981 860
AnnaBridge 156:ff21514d8981 861 /** \brief STRT Unprivileged (16 bit)
AnnaBridge 156:ff21514d8981 862
AnnaBridge 156:ff21514d8981 863 This function executes a Unprivileged STRT instruction for 16 bit values.
AnnaBridge 156:ff21514d8981 864
AnnaBridge 156:ff21514d8981 865 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 866 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 867 */
AnnaBridge 156:ff21514d8981 868 __attribute__((always_inline)) __STATIC_INLINE void __STRHT(uint16_t value, volatile uint16_t *addr)
AnnaBridge 156:ff21514d8981 869 {
AnnaBridge 156:ff21514d8981 870 __ASM volatile ("strht %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
AnnaBridge 156:ff21514d8981 871 }
AnnaBridge 156:ff21514d8981 872
AnnaBridge 156:ff21514d8981 873
AnnaBridge 156:ff21514d8981 874 /** \brief STRT Unprivileged (32 bit)
AnnaBridge 156:ff21514d8981 875
AnnaBridge 156:ff21514d8981 876 This function executes a Unprivileged STRT instruction for 32 bit values.
AnnaBridge 156:ff21514d8981 877
AnnaBridge 156:ff21514d8981 878 \param [in] value Value to store
AnnaBridge 156:ff21514d8981 879 \param [in] ptr Pointer to location
AnnaBridge 156:ff21514d8981 880 */
AnnaBridge 156:ff21514d8981 881 __attribute__((always_inline)) __STATIC_INLINE void __STRT(uint32_t value, volatile uint32_t *addr)
AnnaBridge 156:ff21514d8981 882 {
AnnaBridge 156:ff21514d8981 883 __ASM volatile ("strt %1, %0" : "=Q" (*addr) : "r" (value) );
AnnaBridge 156:ff21514d8981 884 }
AnnaBridge 156:ff21514d8981 885
AnnaBridge 156:ff21514d8981 886 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
AnnaBridge 156:ff21514d8981 887
AnnaBridge 156:ff21514d8981 888
AnnaBridge 156:ff21514d8981 889 #elif defined ( __ICCARM__ ) /*------------------ ICC Compiler -------------------*/
AnnaBridge 156:ff21514d8981 890 /* IAR iccarm specific functions */
AnnaBridge 156:ff21514d8981 891 #include <cmsis_iar.h>
AnnaBridge 156:ff21514d8981 892
AnnaBridge 156:ff21514d8981 893
AnnaBridge 156:ff21514d8981 894 #elif defined ( __TMS470__ ) /*---------------- TI CCS Compiler ------------------*/
AnnaBridge 156:ff21514d8981 895 /* TI CCS specific functions */
AnnaBridge 156:ff21514d8981 896 #include <cmsis_ccs.h>
AnnaBridge 156:ff21514d8981 897
AnnaBridge 156:ff21514d8981 898
AnnaBridge 156:ff21514d8981 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
AnnaBridge 156:ff21514d8981 900 /* TASKING carm specific functions */
AnnaBridge 156:ff21514d8981 901 /*
AnnaBridge 156:ff21514d8981 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
AnnaBridge 156:ff21514d8981 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
AnnaBridge 156:ff21514d8981 904 * Including the CMSIS ones.
AnnaBridge 156:ff21514d8981 905 */
AnnaBridge 156:ff21514d8981 906
AnnaBridge 156:ff21514d8981 907
AnnaBridge 156:ff21514d8981 908 #elif defined ( __CSMC__ ) /*------------------ COSMIC Compiler -------------------*/
AnnaBridge 156:ff21514d8981 909 /* Cosmic specific functions */
AnnaBridge 156:ff21514d8981 910 #include <cmsis_csm.h>
AnnaBridge 156:ff21514d8981 911
AnnaBridge 156:ff21514d8981 912 #endif
AnnaBridge 156:ff21514d8981 913
AnnaBridge 156:ff21514d8981 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
AnnaBridge 156:ff21514d8981 915
AnnaBridge 156:ff21514d8981 916 #endif /* __CORE_CMINSTR_H */