cc y / mbed

ads1115 only

Fork of mbed by mbed official

TARGET_DISCO_F746NG/core_cmInstr.h@107:4f6c30876dfa, 2015-09-16 (annotated)

Committer:
Kojto
Date:
Wed Sep 16 15:32:31 2015 +0100
Revision:
107:4f6c30876dfa
Child:
110:165afa46840b
Release 107  of the mbed library



Changes:

- new platforms - DISCO_F746NG, DISCO_L476VG, NUCLEO_L476RG

- KL43Z - bugfix RTC init function

- K20 - SPI mode fix

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 107:4f6c30876dfa 1 /**************************************************************************//**
Kojto 107:4f6c30876dfa 2 * @file core_cmInstr.h
Kojto 107:4f6c30876dfa 3 * @brief CMSIS Cortex-M Core Instruction Access Header File
Kojto 107:4f6c30876dfa 4 * @version V3.20
Kojto 107:4f6c30876dfa 5 * @date 05. March 2013
Kojto 107:4f6c30876dfa 6 *
Kojto 107:4f6c30876dfa 7 * @note
Kojto 107:4f6c30876dfa 8 *
Kojto 107:4f6c30876dfa 9 ******************************************************************************/
Kojto 107:4f6c30876dfa 10 /* Copyright (c) 2009 - 2013 ARM LIMITED
Kojto 107:4f6c30876dfa 11
Kojto 107:4f6c30876dfa 12 All rights reserved.
Kojto 107:4f6c30876dfa 13 Redistribution and use in source and binary forms, with or without
Kojto 107:4f6c30876dfa 14 modification, are permitted provided that the following conditions are met:
Kojto 107:4f6c30876dfa 15 - Redistributions of source code must retain the above copyright
Kojto 107:4f6c30876dfa 16 notice, this list of conditions and the following disclaimer.
Kojto 107:4f6c30876dfa 17 - Redistributions in binary form must reproduce the above copyright
Kojto 107:4f6c30876dfa 18 notice, this list of conditions and the following disclaimer in the
Kojto 107:4f6c30876dfa 19 documentation and/or other materials provided with the distribution.
Kojto 107:4f6c30876dfa 20 - Neither the name of ARM nor the names of its contributors may be used
Kojto 107:4f6c30876dfa 21 to endorse or promote products derived from this software without
Kojto 107:4f6c30876dfa 22 specific prior written permission.
Kojto 107:4f6c30876dfa 23 *
Kojto 107:4f6c30876dfa 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Kojto 107:4f6c30876dfa 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Kojto 107:4f6c30876dfa 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Kojto 107:4f6c30876dfa 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Kojto 107:4f6c30876dfa 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Kojto 107:4f6c30876dfa 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Kojto 107:4f6c30876dfa 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Kojto 107:4f6c30876dfa 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Kojto 107:4f6c30876dfa 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Kojto 107:4f6c30876dfa 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Kojto 107:4f6c30876dfa 34 POSSIBILITY OF SUCH DAMAGE.
Kojto 107:4f6c30876dfa 35 ---------------------------------------------------------------------------*/
Kojto 107:4f6c30876dfa 36
Kojto 107:4f6c30876dfa 37
Kojto 107:4f6c30876dfa 38 #ifndef __CORE_CMINSTR_H
Kojto 107:4f6c30876dfa 39 #define __CORE_CMINSTR_H
Kojto 107:4f6c30876dfa 40
Kojto 107:4f6c30876dfa 41
Kojto 107:4f6c30876dfa 42 /* ########################## Core Instruction Access ######################### */
Kojto 107:4f6c30876dfa 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Kojto 107:4f6c30876dfa 44 Access to dedicated instructions
Kojto 107:4f6c30876dfa 45 @{
Kojto 107:4f6c30876dfa 46 */
Kojto 107:4f6c30876dfa 47
Kojto 107:4f6c30876dfa 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
Kojto 107:4f6c30876dfa 49 /* ARM armcc specific functions */
Kojto 107:4f6c30876dfa 50
Kojto 107:4f6c30876dfa 51 #if (__ARMCC_VERSION < 400677)
Kojto 107:4f6c30876dfa 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
Kojto 107:4f6c30876dfa 53 #endif
Kojto 107:4f6c30876dfa 54
Kojto 107:4f6c30876dfa 55
Kojto 107:4f6c30876dfa 56 /** \brief No Operation
Kojto 107:4f6c30876dfa 57
Kojto 107:4f6c30876dfa 58 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 107:4f6c30876dfa 59 */
Kojto 107:4f6c30876dfa 60 #define __NOP __nop
Kojto 107:4f6c30876dfa 61
Kojto 107:4f6c30876dfa 62
Kojto 107:4f6c30876dfa 63 /** \brief Wait For Interrupt
Kojto 107:4f6c30876dfa 64
Kojto 107:4f6c30876dfa 65 Wait For Interrupt is a hint instruction that suspends execution
Kojto 107:4f6c30876dfa 66 until one of a number of events occurs.
Kojto 107:4f6c30876dfa 67 */
Kojto 107:4f6c30876dfa 68 #define __WFI __wfi
Kojto 107:4f6c30876dfa 69
Kojto 107:4f6c30876dfa 70
Kojto 107:4f6c30876dfa 71 /** \brief Wait For Event
Kojto 107:4f6c30876dfa 72
Kojto 107:4f6c30876dfa 73 Wait For Event is a hint instruction that permits the processor to enter
Kojto 107:4f6c30876dfa 74 a low-power state until one of a number of events occurs.
Kojto 107:4f6c30876dfa 75 */
Kojto 107:4f6c30876dfa 76 #define __WFE __wfe
Kojto 107:4f6c30876dfa 77
Kojto 107:4f6c30876dfa 78
Kojto 107:4f6c30876dfa 79 /** \brief Send Event
Kojto 107:4f6c30876dfa 80
Kojto 107:4f6c30876dfa 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 107:4f6c30876dfa 82 */
Kojto 107:4f6c30876dfa 83 #define __SEV __sev
Kojto 107:4f6c30876dfa 84
Kojto 107:4f6c30876dfa 85
Kojto 107:4f6c30876dfa 86 /** \brief Instruction Synchronization Barrier
Kojto 107:4f6c30876dfa 87
Kojto 107:4f6c30876dfa 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 107:4f6c30876dfa 89 so that all instructions following the ISB are fetched from cache or
Kojto 107:4f6c30876dfa 90 memory, after the instruction has been completed.
Kojto 107:4f6c30876dfa 91 */
Kojto 107:4f6c30876dfa 92 #define __ISB() __isb(0xF)
Kojto 107:4f6c30876dfa 93
Kojto 107:4f6c30876dfa 94
Kojto 107:4f6c30876dfa 95 /** \brief Data Synchronization Barrier
Kojto 107:4f6c30876dfa 96
Kojto 107:4f6c30876dfa 97 This function acts as a special kind of Data Memory Barrier.
Kojto 107:4f6c30876dfa 98 It completes when all explicit memory accesses before this instruction complete.
Kojto 107:4f6c30876dfa 99 */
Kojto 107:4f6c30876dfa 100 #define __DSB() __dsb(0xF)
Kojto 107:4f6c30876dfa 101
Kojto 107:4f6c30876dfa 102
Kojto 107:4f6c30876dfa 103 /** \brief Data Memory Barrier
Kojto 107:4f6c30876dfa 104
Kojto 107:4f6c30876dfa 105 This function ensures the apparent order of the explicit memory operations before
Kojto 107:4f6c30876dfa 106 and after the instruction, without ensuring their completion.
Kojto 107:4f6c30876dfa 107 */
Kojto 107:4f6c30876dfa 108 #define __DMB() __dmb(0xF)
Kojto 107:4f6c30876dfa 109
Kojto 107:4f6c30876dfa 110
Kojto 107:4f6c30876dfa 111 /** \brief Reverse byte order (32 bit)
Kojto 107:4f6c30876dfa 112
Kojto 107:4f6c30876dfa 113 This function reverses the byte order in integer value.
Kojto 107:4f6c30876dfa 114
Kojto 107:4f6c30876dfa 115 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 116 \return Reversed value
Kojto 107:4f6c30876dfa 117 */
Kojto 107:4f6c30876dfa 118 #define __REV __rev
Kojto 107:4f6c30876dfa 119
Kojto 107:4f6c30876dfa 120
Kojto 107:4f6c30876dfa 121 /** \brief Reverse byte order (16 bit)
Kojto 107:4f6c30876dfa 122
Kojto 107:4f6c30876dfa 123 This function reverses the byte order in two unsigned short values.
Kojto 107:4f6c30876dfa 124
Kojto 107:4f6c30876dfa 125 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 126 \return Reversed value
Kojto 107:4f6c30876dfa 127 */
Kojto 107:4f6c30876dfa 128 #ifndef __NO_EMBEDDED_ASM
Kojto 107:4f6c30876dfa 129 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
Kojto 107:4f6c30876dfa 130 {
Kojto 107:4f6c30876dfa 131 rev16 r0, r0
Kojto 107:4f6c30876dfa 132 bx lr
Kojto 107:4f6c30876dfa 133 }
Kojto 107:4f6c30876dfa 134 #endif
Kojto 107:4f6c30876dfa 135
Kojto 107:4f6c30876dfa 136 /** \brief Reverse byte order in signed short value
Kojto 107:4f6c30876dfa 137
Kojto 107:4f6c30876dfa 138 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 107:4f6c30876dfa 139
Kojto 107:4f6c30876dfa 140 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 141 \return Reversed value
Kojto 107:4f6c30876dfa 142 */
Kojto 107:4f6c30876dfa 143 #ifndef __NO_EMBEDDED_ASM
Kojto 107:4f6c30876dfa 144 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
Kojto 107:4f6c30876dfa 145 {
Kojto 107:4f6c30876dfa 146 revsh r0, r0
Kojto 107:4f6c30876dfa 147 bx lr
Kojto 107:4f6c30876dfa 148 }
Kojto 107:4f6c30876dfa 149 #endif
Kojto 107:4f6c30876dfa 150
Kojto 107:4f6c30876dfa 151
Kojto 107:4f6c30876dfa 152 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 107:4f6c30876dfa 153
Kojto 107:4f6c30876dfa 154 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 107:4f6c30876dfa 155
Kojto 107:4f6c30876dfa 156 \param [in] value Value to rotate
Kojto 107:4f6c30876dfa 157 \param [in] value Number of Bits to rotate
Kojto 107:4f6c30876dfa 158 \return Rotated value
Kojto 107:4f6c30876dfa 159 */
Kojto 107:4f6c30876dfa 160 #define __ROR __ror
Kojto 107:4f6c30876dfa 161
Kojto 107:4f6c30876dfa 162
Kojto 107:4f6c30876dfa 163 /** \brief Breakpoint
Kojto 107:4f6c30876dfa 164
Kojto 107:4f6c30876dfa 165 This function causes the processor to enter Debug state.
Kojto 107:4f6c30876dfa 166 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 107:4f6c30876dfa 167
Kojto 107:4f6c30876dfa 168 \param [in] value is ignored by the processor.
Kojto 107:4f6c30876dfa 169 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 107:4f6c30876dfa 170 */
Kojto 107:4f6c30876dfa 171 #define __BKPT(value) __breakpoint(value)
Kojto 107:4f6c30876dfa 172
Kojto 107:4f6c30876dfa 173
Kojto 107:4f6c30876dfa 174 #if (__CORTEX_M >= 0x03)
Kojto 107:4f6c30876dfa 175
Kojto 107:4f6c30876dfa 176 /** \brief Reverse bit order of value
Kojto 107:4f6c30876dfa 177
Kojto 107:4f6c30876dfa 178 This function reverses the bit order of the given value.
Kojto 107:4f6c30876dfa 179
Kojto 107:4f6c30876dfa 180 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 181 \return Reversed value
Kojto 107:4f6c30876dfa 182 */
Kojto 107:4f6c30876dfa 183 #define __RBIT __rbit
Kojto 107:4f6c30876dfa 184
Kojto 107:4f6c30876dfa 185
Kojto 107:4f6c30876dfa 186 /** \brief LDR Exclusive (8 bit)
Kojto 107:4f6c30876dfa 187
Kojto 107:4f6c30876dfa 188 This function performs a exclusive LDR command for 8 bit value.
Kojto 107:4f6c30876dfa 189
Kojto 107:4f6c30876dfa 190 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 191 \return value of type uint8_t at (*ptr)
Kojto 107:4f6c30876dfa 192 */
Kojto 107:4f6c30876dfa 193 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
Kojto 107:4f6c30876dfa 194
Kojto 107:4f6c30876dfa 195
Kojto 107:4f6c30876dfa 196 /** \brief LDR Exclusive (16 bit)
Kojto 107:4f6c30876dfa 197
Kojto 107:4f6c30876dfa 198 This function performs a exclusive LDR command for 16 bit values.
Kojto 107:4f6c30876dfa 199
Kojto 107:4f6c30876dfa 200 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 201 \return value of type uint16_t at (*ptr)
Kojto 107:4f6c30876dfa 202 */
Kojto 107:4f6c30876dfa 203 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
Kojto 107:4f6c30876dfa 204
Kojto 107:4f6c30876dfa 205
Kojto 107:4f6c30876dfa 206 /** \brief LDR Exclusive (32 bit)
Kojto 107:4f6c30876dfa 207
Kojto 107:4f6c30876dfa 208 This function performs a exclusive LDR command for 32 bit values.
Kojto 107:4f6c30876dfa 209
Kojto 107:4f6c30876dfa 210 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 211 \return value of type uint32_t at (*ptr)
Kojto 107:4f6c30876dfa 212 */
Kojto 107:4f6c30876dfa 213 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
Kojto 107:4f6c30876dfa 214
Kojto 107:4f6c30876dfa 215
Kojto 107:4f6c30876dfa 216 /** \brief STR Exclusive (8 bit)
Kojto 107:4f6c30876dfa 217
Kojto 107:4f6c30876dfa 218 This function performs a exclusive STR command for 8 bit values.
Kojto 107:4f6c30876dfa 219
Kojto 107:4f6c30876dfa 220 \param [in] value Value to store
Kojto 107:4f6c30876dfa 221 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 222 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 223 \return 1 Function failed
Kojto 107:4f6c30876dfa 224 */
Kojto 107:4f6c30876dfa 225 #define __STREXB(value, ptr) __strex(value, ptr)
Kojto 107:4f6c30876dfa 226
Kojto 107:4f6c30876dfa 227
Kojto 107:4f6c30876dfa 228 /** \brief STR Exclusive (16 bit)
Kojto 107:4f6c30876dfa 229
Kojto 107:4f6c30876dfa 230 This function performs a exclusive STR command for 16 bit values.
Kojto 107:4f6c30876dfa 231
Kojto 107:4f6c30876dfa 232 \param [in] value Value to store
Kojto 107:4f6c30876dfa 233 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 234 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 235 \return 1 Function failed
Kojto 107:4f6c30876dfa 236 */
Kojto 107:4f6c30876dfa 237 #define __STREXH(value, ptr) __strex(value, ptr)
Kojto 107:4f6c30876dfa 238
Kojto 107:4f6c30876dfa 239
Kojto 107:4f6c30876dfa 240 /** \brief STR Exclusive (32 bit)
Kojto 107:4f6c30876dfa 241
Kojto 107:4f6c30876dfa 242 This function performs a exclusive STR command for 32 bit values.
Kojto 107:4f6c30876dfa 243
Kojto 107:4f6c30876dfa 244 \param [in] value Value to store
Kojto 107:4f6c30876dfa 245 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 246 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 247 \return 1 Function failed
Kojto 107:4f6c30876dfa 248 */
Kojto 107:4f6c30876dfa 249 #define __STREXW(value, ptr) __strex(value, ptr)
Kojto 107:4f6c30876dfa 250
Kojto 107:4f6c30876dfa 251
Kojto 107:4f6c30876dfa 252 /** \brief Remove the exclusive lock
Kojto 107:4f6c30876dfa 253
Kojto 107:4f6c30876dfa 254 This function removes the exclusive lock which is created by LDREX.
Kojto 107:4f6c30876dfa 255
Kojto 107:4f6c30876dfa 256 */
Kojto 107:4f6c30876dfa 257 #define __CLREX __clrex
Kojto 107:4f6c30876dfa 258
Kojto 107:4f6c30876dfa 259
Kojto 107:4f6c30876dfa 260 /** \brief Signed Saturate
Kojto 107:4f6c30876dfa 261
Kojto 107:4f6c30876dfa 262 This function saturates a signed value.
Kojto 107:4f6c30876dfa 263
Kojto 107:4f6c30876dfa 264 \param [in] value Value to be saturated
Kojto 107:4f6c30876dfa 265 \param [in] sat Bit position to saturate to (1..32)
Kojto 107:4f6c30876dfa 266 \return Saturated value
Kojto 107:4f6c30876dfa 267 */
Kojto 107:4f6c30876dfa 268 #define __SSAT __ssat
Kojto 107:4f6c30876dfa 269
Kojto 107:4f6c30876dfa 270
Kojto 107:4f6c30876dfa 271 /** \brief Unsigned Saturate
Kojto 107:4f6c30876dfa 272
Kojto 107:4f6c30876dfa 273 This function saturates an unsigned value.
Kojto 107:4f6c30876dfa 274
Kojto 107:4f6c30876dfa 275 \param [in] value Value to be saturated
Kojto 107:4f6c30876dfa 276 \param [in] sat Bit position to saturate to (0..31)
Kojto 107:4f6c30876dfa 277 \return Saturated value
Kojto 107:4f6c30876dfa 278 */
Kojto 107:4f6c30876dfa 279 #define __USAT __usat
Kojto 107:4f6c30876dfa 280
Kojto 107:4f6c30876dfa 281
Kojto 107:4f6c30876dfa 282 /** \brief Count leading zeros
Kojto 107:4f6c30876dfa 283
Kojto 107:4f6c30876dfa 284 This function counts the number of leading zeros of a data value.
Kojto 107:4f6c30876dfa 285
Kojto 107:4f6c30876dfa 286 \param [in] value Value to count the leading zeros
Kojto 107:4f6c30876dfa 287 \return number of leading zeros in value
Kojto 107:4f6c30876dfa 288 */
Kojto 107:4f6c30876dfa 289 #define __CLZ __clz
Kojto 107:4f6c30876dfa 290
Kojto 107:4f6c30876dfa 291 #endif /* (__CORTEX_M >= 0x03) */
Kojto 107:4f6c30876dfa 292
Kojto 107:4f6c30876dfa 293
Kojto 107:4f6c30876dfa 294
Kojto 107:4f6c30876dfa 295 #elif defined ( __ICCARM__ ) /*------------------ ICC Compiler -------------------*/
Kojto 107:4f6c30876dfa 296 /* IAR iccarm specific functions */
Kojto 107:4f6c30876dfa 297
Kojto 107:4f6c30876dfa 298 #include <cmsis_iar.h>
Kojto 107:4f6c30876dfa 299
Kojto 107:4f6c30876dfa 300
Kojto 107:4f6c30876dfa 301 #elif defined ( __TMS470__ ) /*---------------- TI CCS Compiler ------------------*/
Kojto 107:4f6c30876dfa 302 /* TI CCS specific functions */
Kojto 107:4f6c30876dfa 303
Kojto 107:4f6c30876dfa 304 #include <cmsis_ccs.h>
Kojto 107:4f6c30876dfa 305
Kojto 107:4f6c30876dfa 306
Kojto 107:4f6c30876dfa 307 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
Kojto 107:4f6c30876dfa 308 /* GNU gcc specific functions */
Kojto 107:4f6c30876dfa 309
Kojto 107:4f6c30876dfa 310 /* Define macros for porting to both thumb1 and thumb2.
Kojto 107:4f6c30876dfa 311 * For thumb1, use low register (r0-r7), specified by constrant "l"
Kojto 107:4f6c30876dfa 312 * Otherwise, use general registers, specified by constrant "r" */
Kojto 107:4f6c30876dfa 313 #if defined (__thumb__) && !defined (__thumb2__)
Kojto 107:4f6c30876dfa 314 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
Kojto 107:4f6c30876dfa 315 #define __CMSIS_GCC_USE_REG(r) "l" (r)
Kojto 107:4f6c30876dfa 316 #else
Kojto 107:4f6c30876dfa 317 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
Kojto 107:4f6c30876dfa 318 #define __CMSIS_GCC_USE_REG(r) "r" (r)
Kojto 107:4f6c30876dfa 319 #endif
Kojto 107:4f6c30876dfa 320
Kojto 107:4f6c30876dfa 321 /** \brief No Operation
Kojto 107:4f6c30876dfa 322
Kojto 107:4f6c30876dfa 323 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 107:4f6c30876dfa 324 */
Kojto 107:4f6c30876dfa 325 __attribute__( ( always_inline ) ) __STATIC_INLINE void __NOP(void)
Kojto 107:4f6c30876dfa 326 {
Kojto 107:4f6c30876dfa 327 __ASM volatile ("nop");
Kojto 107:4f6c30876dfa 328 }
Kojto 107:4f6c30876dfa 329
Kojto 107:4f6c30876dfa 330
Kojto 107:4f6c30876dfa 331 /** \brief Wait For Interrupt
Kojto 107:4f6c30876dfa 332
Kojto 107:4f6c30876dfa 333 Wait For Interrupt is a hint instruction that suspends execution
Kojto 107:4f6c30876dfa 334 until one of a number of events occurs.
Kojto 107:4f6c30876dfa 335 */
Kojto 107:4f6c30876dfa 336 __attribute__( ( always_inline ) ) __STATIC_INLINE void __WFI(void)
Kojto 107:4f6c30876dfa 337 {
Kojto 107:4f6c30876dfa 338 __ASM volatile ("wfi");
Kojto 107:4f6c30876dfa 339 }
Kojto 107:4f6c30876dfa 340
Kojto 107:4f6c30876dfa 341
Kojto 107:4f6c30876dfa 342 /** \brief Wait For Event
Kojto 107:4f6c30876dfa 343
Kojto 107:4f6c30876dfa 344 Wait For Event is a hint instruction that permits the processor to enter
Kojto 107:4f6c30876dfa 345 a low-power state until one of a number of events occurs.
Kojto 107:4f6c30876dfa 346 */
Kojto 107:4f6c30876dfa 347 __attribute__( ( always_inline ) ) __STATIC_INLINE void __WFE(void)
Kojto 107:4f6c30876dfa 348 {
Kojto 107:4f6c30876dfa 349 __ASM volatile ("wfe");
Kojto 107:4f6c30876dfa 350 }
Kojto 107:4f6c30876dfa 351
Kojto 107:4f6c30876dfa 352
Kojto 107:4f6c30876dfa 353 /** \brief Send Event
Kojto 107:4f6c30876dfa 354
Kojto 107:4f6c30876dfa 355 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 107:4f6c30876dfa 356 */
Kojto 107:4f6c30876dfa 357 __attribute__( ( always_inline ) ) __STATIC_INLINE void __SEV(void)
Kojto 107:4f6c30876dfa 358 {
Kojto 107:4f6c30876dfa 359 __ASM volatile ("sev");
Kojto 107:4f6c30876dfa 360 }
Kojto 107:4f6c30876dfa 361
Kojto 107:4f6c30876dfa 362
Kojto 107:4f6c30876dfa 363 /** \brief Instruction Synchronization Barrier
Kojto 107:4f6c30876dfa 364
Kojto 107:4f6c30876dfa 365 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 107:4f6c30876dfa 366 so that all instructions following the ISB are fetched from cache or
Kojto 107:4f6c30876dfa 367 memory, after the instruction has been completed.
Kojto 107:4f6c30876dfa 368 */
Kojto 107:4f6c30876dfa 369 __attribute__( ( always_inline ) ) __STATIC_INLINE void __ISB(void)
Kojto 107:4f6c30876dfa 370 {
Kojto 107:4f6c30876dfa 371 __ASM volatile ("isb");
Kojto 107:4f6c30876dfa 372 }
Kojto 107:4f6c30876dfa 373
Kojto 107:4f6c30876dfa 374
Kojto 107:4f6c30876dfa 375 /** \brief Data Synchronization Barrier
Kojto 107:4f6c30876dfa 376
Kojto 107:4f6c30876dfa 377 This function acts as a special kind of Data Memory Barrier.
Kojto 107:4f6c30876dfa 378 It completes when all explicit memory accesses before this instruction complete.
Kojto 107:4f6c30876dfa 379 */
Kojto 107:4f6c30876dfa 380 __attribute__( ( always_inline ) ) __STATIC_INLINE void __DSB(void)
Kojto 107:4f6c30876dfa 381 {
Kojto 107:4f6c30876dfa 382 __ASM volatile ("dsb");
Kojto 107:4f6c30876dfa 383 }
Kojto 107:4f6c30876dfa 384
Kojto 107:4f6c30876dfa 385
Kojto 107:4f6c30876dfa 386 /** \brief Data Memory Barrier
Kojto 107:4f6c30876dfa 387
Kojto 107:4f6c30876dfa 388 This function ensures the apparent order of the explicit memory operations before
Kojto 107:4f6c30876dfa 389 and after the instruction, without ensuring their completion.
Kojto 107:4f6c30876dfa 390 */
Kojto 107:4f6c30876dfa 391 __attribute__( ( always_inline ) ) __STATIC_INLINE void __DMB(void)
Kojto 107:4f6c30876dfa 392 {
Kojto 107:4f6c30876dfa 393 __ASM volatile ("dmb");
Kojto 107:4f6c30876dfa 394 }
Kojto 107:4f6c30876dfa 395
Kojto 107:4f6c30876dfa 396
Kojto 107:4f6c30876dfa 397 /** \brief Reverse byte order (32 bit)
Kojto 107:4f6c30876dfa 398
Kojto 107:4f6c30876dfa 399 This function reverses the byte order in integer value.
Kojto 107:4f6c30876dfa 400
Kojto 107:4f6c30876dfa 401 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 402 \return Reversed value
Kojto 107:4f6c30876dfa 403 */
Kojto 107:4f6c30876dfa 404 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __REV(uint32_t value)
Kojto 107:4f6c30876dfa 405 {
Kojto 107:4f6c30876dfa 406 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
Kojto 107:4f6c30876dfa 407 return __builtin_bswap32(value);
Kojto 107:4f6c30876dfa 408 #else
Kojto 107:4f6c30876dfa 409 uint32_t result;
Kojto 107:4f6c30876dfa 410
Kojto 107:4f6c30876dfa 411 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 107:4f6c30876dfa 412 return(result);
Kojto 107:4f6c30876dfa 413 #endif
Kojto 107:4f6c30876dfa 414 }
Kojto 107:4f6c30876dfa 415
Kojto 107:4f6c30876dfa 416
Kojto 107:4f6c30876dfa 417 /** \brief Reverse byte order (16 bit)
Kojto 107:4f6c30876dfa 418
Kojto 107:4f6c30876dfa 419 This function reverses the byte order in two unsigned short values.
Kojto 107:4f6c30876dfa 420
Kojto 107:4f6c30876dfa 421 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 422 \return Reversed value
Kojto 107:4f6c30876dfa 423 */
Kojto 107:4f6c30876dfa 424 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __REV16(uint32_t value)
Kojto 107:4f6c30876dfa 425 {
Kojto 107:4f6c30876dfa 426 uint32_t result;
Kojto 107:4f6c30876dfa 427
Kojto 107:4f6c30876dfa 428 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 107:4f6c30876dfa 429 return(result);
Kojto 107:4f6c30876dfa 430 }
Kojto 107:4f6c30876dfa 431
Kojto 107:4f6c30876dfa 432
Kojto 107:4f6c30876dfa 433 /** \brief Reverse byte order in signed short value
Kojto 107:4f6c30876dfa 434
Kojto 107:4f6c30876dfa 435 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 107:4f6c30876dfa 436
Kojto 107:4f6c30876dfa 437 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 438 \return Reversed value
Kojto 107:4f6c30876dfa 439 */
Kojto 107:4f6c30876dfa 440 __attribute__( ( always_inline ) ) __STATIC_INLINE int32_t __REVSH(int32_t value)
Kojto 107:4f6c30876dfa 441 {
Kojto 107:4f6c30876dfa 442 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 107:4f6c30876dfa 443 return (short)__builtin_bswap16(value);
Kojto 107:4f6c30876dfa 444 #else
Kojto 107:4f6c30876dfa 445 uint32_t result;
Kojto 107:4f6c30876dfa 446
Kojto 107:4f6c30876dfa 447 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 107:4f6c30876dfa 448 return(result);
Kojto 107:4f6c30876dfa 449 #endif
Kojto 107:4f6c30876dfa 450 }
Kojto 107:4f6c30876dfa 451
Kojto 107:4f6c30876dfa 452
Kojto 107:4f6c30876dfa 453 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 107:4f6c30876dfa 454
Kojto 107:4f6c30876dfa 455 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 107:4f6c30876dfa 456
Kojto 107:4f6c30876dfa 457 \param [in] value Value to rotate
Kojto 107:4f6c30876dfa 458 \param [in] value Number of Bits to rotate
Kojto 107:4f6c30876dfa 459 \return Rotated value
Kojto 107:4f6c30876dfa 460 */
Kojto 107:4f6c30876dfa 461 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
Kojto 107:4f6c30876dfa 462 {
Kojto 107:4f6c30876dfa 463 return (op1 >> op2) | (op1 << (32 - op2));
Kojto 107:4f6c30876dfa 464 }
Kojto 107:4f6c30876dfa 465
Kojto 107:4f6c30876dfa 466
Kojto 107:4f6c30876dfa 467 /** \brief Breakpoint
Kojto 107:4f6c30876dfa 468
Kojto 107:4f6c30876dfa 469 This function causes the processor to enter Debug state.
Kojto 107:4f6c30876dfa 470 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 107:4f6c30876dfa 471
Kojto 107:4f6c30876dfa 472 \param [in] value is ignored by the processor.
Kojto 107:4f6c30876dfa 473 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 107:4f6c30876dfa 474 */
Kojto 107:4f6c30876dfa 475 #define __BKPT(value) __ASM volatile ("bkpt "#value)
Kojto 107:4f6c30876dfa 476
Kojto 107:4f6c30876dfa 477
Kojto 107:4f6c30876dfa 478 #if (__CORTEX_M >= 0x03)
Kojto 107:4f6c30876dfa 479
Kojto 107:4f6c30876dfa 480 /** \brief Reverse bit order of value
Kojto 107:4f6c30876dfa 481
Kojto 107:4f6c30876dfa 482 This function reverses the bit order of the given value.
Kojto 107:4f6c30876dfa 483
Kojto 107:4f6c30876dfa 484 \param [in] value Value to reverse
Kojto 107:4f6c30876dfa 485 \return Reversed value
Kojto 107:4f6c30876dfa 486 */
Kojto 107:4f6c30876dfa 487 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 107:4f6c30876dfa 488 {
Kojto 107:4f6c30876dfa 489 uint32_t result;
Kojto 107:4f6c30876dfa 490
Kojto 107:4f6c30876dfa 491 __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) );
Kojto 107:4f6c30876dfa 492 return(result);
Kojto 107:4f6c30876dfa 493 }
Kojto 107:4f6c30876dfa 494
Kojto 107:4f6c30876dfa 495
Kojto 107:4f6c30876dfa 496 /** \brief LDR Exclusive (8 bit)
Kojto 107:4f6c30876dfa 497
Kojto 107:4f6c30876dfa 498 This function performs a exclusive LDR command for 8 bit value.
Kojto 107:4f6c30876dfa 499
Kojto 107:4f6c30876dfa 500 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 501 \return value of type uint8_t at (*ptr)
Kojto 107:4f6c30876dfa 502 */
Kojto 107:4f6c30876dfa 503 __attribute__( ( always_inline ) ) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
Kojto 107:4f6c30876dfa 504 {
Kojto 107:4f6c30876dfa 505 uint32_t result;
Kojto 107:4f6c30876dfa 506
Kojto 107:4f6c30876dfa 507 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 107:4f6c30876dfa 508 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 107:4f6c30876dfa 509 #else
Kojto 107:4f6c30876dfa 510 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 107:4f6c30876dfa 511 accepted by assembler. So has to use following less efficient pattern.
Kojto 107:4f6c30876dfa 512 */
Kojto 107:4f6c30876dfa 513 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 107:4f6c30876dfa 514 #endif
Kojto 107:4f6c30876dfa 515 return(result);
Kojto 107:4f6c30876dfa 516 }
Kojto 107:4f6c30876dfa 517
Kojto 107:4f6c30876dfa 518
Kojto 107:4f6c30876dfa 519 /** \brief LDR Exclusive (16 bit)
Kojto 107:4f6c30876dfa 520
Kojto 107:4f6c30876dfa 521 This function performs a exclusive LDR command for 16 bit values.
Kojto 107:4f6c30876dfa 522
Kojto 107:4f6c30876dfa 523 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 524 \return value of type uint16_t at (*ptr)
Kojto 107:4f6c30876dfa 525 */
Kojto 107:4f6c30876dfa 526 __attribute__( ( always_inline ) ) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
Kojto 107:4f6c30876dfa 527 {
Kojto 107:4f6c30876dfa 528 uint32_t result;
Kojto 107:4f6c30876dfa 529
Kojto 107:4f6c30876dfa 530 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 107:4f6c30876dfa 531 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 107:4f6c30876dfa 532 #else
Kojto 107:4f6c30876dfa 533 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 107:4f6c30876dfa 534 accepted by assembler. So has to use following less efficient pattern.
Kojto 107:4f6c30876dfa 535 */
Kojto 107:4f6c30876dfa 536 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 107:4f6c30876dfa 537 #endif
Kojto 107:4f6c30876dfa 538 return(result);
Kojto 107:4f6c30876dfa 539 }
Kojto 107:4f6c30876dfa 540
Kojto 107:4f6c30876dfa 541
Kojto 107:4f6c30876dfa 542 /** \brief LDR Exclusive (32 bit)
Kojto 107:4f6c30876dfa 543
Kojto 107:4f6c30876dfa 544 This function performs a exclusive LDR command for 32 bit values.
Kojto 107:4f6c30876dfa 545
Kojto 107:4f6c30876dfa 546 \param [in] ptr Pointer to data
Kojto 107:4f6c30876dfa 547 \return value of type uint32_t at (*ptr)
Kojto 107:4f6c30876dfa 548 */
Kojto 107:4f6c30876dfa 549 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
Kojto 107:4f6c30876dfa 550 {
Kojto 107:4f6c30876dfa 551 uint32_t result;
Kojto 107:4f6c30876dfa 552
Kojto 107:4f6c30876dfa 553 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 107:4f6c30876dfa 554 return(result);
Kojto 107:4f6c30876dfa 555 }
Kojto 107:4f6c30876dfa 556
Kojto 107:4f6c30876dfa 557
Kojto 107:4f6c30876dfa 558 /** \brief STR Exclusive (8 bit)
Kojto 107:4f6c30876dfa 559
Kojto 107:4f6c30876dfa 560 This function performs a exclusive STR command for 8 bit values.
Kojto 107:4f6c30876dfa 561
Kojto 107:4f6c30876dfa 562 \param [in] value Value to store
Kojto 107:4f6c30876dfa 563 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 564 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 565 \return 1 Function failed
Kojto 107:4f6c30876dfa 566 */
Kojto 107:4f6c30876dfa 567 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
Kojto 107:4f6c30876dfa 568 {
Kojto 107:4f6c30876dfa 569 uint32_t result;
Kojto 107:4f6c30876dfa 570
Kojto 107:4f6c30876dfa 571 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 107:4f6c30876dfa 572 return(result);
Kojto 107:4f6c30876dfa 573 }
Kojto 107:4f6c30876dfa 574
Kojto 107:4f6c30876dfa 575
Kojto 107:4f6c30876dfa 576 /** \brief STR Exclusive (16 bit)
Kojto 107:4f6c30876dfa 577
Kojto 107:4f6c30876dfa 578 This function performs a exclusive STR command for 16 bit values.
Kojto 107:4f6c30876dfa 579
Kojto 107:4f6c30876dfa 580 \param [in] value Value to store
Kojto 107:4f6c30876dfa 581 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 582 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 583 \return 1 Function failed
Kojto 107:4f6c30876dfa 584 */
Kojto 107:4f6c30876dfa 585 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
Kojto 107:4f6c30876dfa 586 {
Kojto 107:4f6c30876dfa 587 uint32_t result;
Kojto 107:4f6c30876dfa 588
Kojto 107:4f6c30876dfa 589 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 107:4f6c30876dfa 590 return(result);
Kojto 107:4f6c30876dfa 591 }
Kojto 107:4f6c30876dfa 592
Kojto 107:4f6c30876dfa 593
Kojto 107:4f6c30876dfa 594 /** \brief STR Exclusive (32 bit)
Kojto 107:4f6c30876dfa 595
Kojto 107:4f6c30876dfa 596 This function performs a exclusive STR command for 32 bit values.
Kojto 107:4f6c30876dfa 597
Kojto 107:4f6c30876dfa 598 \param [in] value Value to store
Kojto 107:4f6c30876dfa 599 \param [in] ptr Pointer to location
Kojto 107:4f6c30876dfa 600 \return 0 Function succeeded
Kojto 107:4f6c30876dfa 601 \return 1 Function failed
Kojto 107:4f6c30876dfa 602 */
Kojto 107:4f6c30876dfa 603 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
Kojto 107:4f6c30876dfa 604 {
Kojto 107:4f6c30876dfa 605 uint32_t result;
Kojto 107:4f6c30876dfa 606
Kojto 107:4f6c30876dfa 607 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 107:4f6c30876dfa 608 return(result);
Kojto 107:4f6c30876dfa 609 }
Kojto 107:4f6c30876dfa 610
Kojto 107:4f6c30876dfa 611
Kojto 107:4f6c30876dfa 612 /** \brief Remove the exclusive lock
Kojto 107:4f6c30876dfa 613
Kojto 107:4f6c30876dfa 614 This function removes the exclusive lock which is created by LDREX.
Kojto 107:4f6c30876dfa 615
Kojto 107:4f6c30876dfa 616 */
Kojto 107:4f6c30876dfa 617 __attribute__( ( always_inline ) ) __STATIC_INLINE void __CLREX(void)
Kojto 107:4f6c30876dfa 618 {
Kojto 107:4f6c30876dfa 619 __ASM volatile ("clrex" ::: "memory");
Kojto 107:4f6c30876dfa 620 }
Kojto 107:4f6c30876dfa 621
Kojto 107:4f6c30876dfa 622
Kojto 107:4f6c30876dfa 623 /** \brief Signed Saturate
Kojto 107:4f6c30876dfa 624
Kojto 107:4f6c30876dfa 625 This function saturates a signed value.
Kojto 107:4f6c30876dfa 626
Kojto 107:4f6c30876dfa 627 \param [in] value Value to be saturated
Kojto 107:4f6c30876dfa 628 \param [in] sat Bit position to saturate to (1..32)
Kojto 107:4f6c30876dfa 629 \return Saturated value
Kojto 107:4f6c30876dfa 630 */
Kojto 107:4f6c30876dfa 631 #define __SSAT(ARG1,ARG2) \
Kojto 107:4f6c30876dfa 632 ({ \
Kojto 107:4f6c30876dfa 633 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 107:4f6c30876dfa 634 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 107:4f6c30876dfa 635 __RES; \
Kojto 107:4f6c30876dfa 636 })
Kojto 107:4f6c30876dfa 637
Kojto 107:4f6c30876dfa 638
Kojto 107:4f6c30876dfa 639 /** \brief Unsigned Saturate
Kojto 107:4f6c30876dfa 640
Kojto 107:4f6c30876dfa 641 This function saturates an unsigned value.
Kojto 107:4f6c30876dfa 642
Kojto 107:4f6c30876dfa 643 \param [in] value Value to be saturated
Kojto 107:4f6c30876dfa 644 \param [in] sat Bit position to saturate to (0..31)
Kojto 107:4f6c30876dfa 645 \return Saturated value
Kojto 107:4f6c30876dfa 646 */
Kojto 107:4f6c30876dfa 647 #define __USAT(ARG1,ARG2) \
Kojto 107:4f6c30876dfa 648 ({ \
Kojto 107:4f6c30876dfa 649 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 107:4f6c30876dfa 650 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 107:4f6c30876dfa 651 __RES; \
Kojto 107:4f6c30876dfa 652 })
Kojto 107:4f6c30876dfa 653
Kojto 107:4f6c30876dfa 654
Kojto 107:4f6c30876dfa 655 /** \brief Count leading zeros
Kojto 107:4f6c30876dfa 656
Kojto 107:4f6c30876dfa 657 This function counts the number of leading zeros of a data value.
Kojto 107:4f6c30876dfa 658
Kojto 107:4f6c30876dfa 659 \param [in] value Value to count the leading zeros
Kojto 107:4f6c30876dfa 660 \return number of leading zeros in value
Kojto 107:4f6c30876dfa 661 */
Kojto 107:4f6c30876dfa 662 __attribute__( ( always_inline ) ) __STATIC_INLINE uint8_t __CLZ(uint32_t value)
Kojto 107:4f6c30876dfa 663 {
Kojto 107:4f6c30876dfa 664 uint32_t result;
Kojto 107:4f6c30876dfa 665
Kojto 107:4f6c30876dfa 666 __ASM volatile ("clz %0, %1" : "=r" (result) : "r" (value) );
Kojto 107:4f6c30876dfa 667 return(result);
Kojto 107:4f6c30876dfa 668 }
Kojto 107:4f6c30876dfa 669
Kojto 107:4f6c30876dfa 670 #endif /* (__CORTEX_M >= 0x03) */
Kojto 107:4f6c30876dfa 671
Kojto 107:4f6c30876dfa 672
Kojto 107:4f6c30876dfa 673
Kojto 107:4f6c30876dfa 674
Kojto 107:4f6c30876dfa 675 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
Kojto 107:4f6c30876dfa 676 /* TASKING carm specific functions */
Kojto 107:4f6c30876dfa 677
Kojto 107:4f6c30876dfa 678 /*
Kojto 107:4f6c30876dfa 679 * The CMSIS functions have been implemented as intrinsics in the compiler.
Kojto 107:4f6c30876dfa 680 * Please use "carm -?i" to get an up to date list of all intrinsics,
Kojto 107:4f6c30876dfa 681 * Including the CMSIS ones.
Kojto 107:4f6c30876dfa 682 */
Kojto 107:4f6c30876dfa 683
Kojto 107:4f6c30876dfa 684 #endif
Kojto 107:4f6c30876dfa 685
Kojto 107:4f6c30876dfa 686 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
Kojto 107:4f6c30876dfa 687
Kojto 107:4f6c30876dfa 688 #endif /* __CORE_CMINSTR_H */