Jolyon Hill / mbed-dev

Changes to support running on smaller memory LPC device LPC1764

Fork of mbed-dev by mbed official

targets/cmsis/core_cmInstr.h@19:112740acecfa, 2015-11-10 (annotated)

Committer:
mbed_official
Date:
Tue Nov 10 09:30:11 2015 +0000
Revision:
19:112740acecfa
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 7218418919aeaf775fb8d386ea7ee0dfc0c80ff9



Full URL: https://github.com/mbedmicro/mbed/commit/7218418919aeaf775fb8d386ea7ee0dfc0c80ff9/



DISCO_F469NI - add disco F469NI support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**************************************************************************//**
bogdanm 0:9b334a45a8ff 2 * @file core_cmInstr.h
bogdanm 0:9b334a45a8ff 3 * @brief CMSIS Cortex-M Core Instruction Access Header File
mbed_official 19:112740acecfa 4 * @version V4.10
mbed_official 19:112740acecfa 5 * @date 18. March 2015
bogdanm 0:9b334a45a8ff 6 *
bogdanm 0:9b334a45a8ff 7 * @note
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 ******************************************************************************/
mbed_official 19:112740acecfa 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
bogdanm 0:9b334a45a8ff 11
bogdanm 0:9b334a45a8ff 12 All rights reserved.
bogdanm 0:9b334a45a8ff 13 Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 14 modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 15 - Redistributions of source code must retain the above copyright
bogdanm 0:9b334a45a8ff 16 notice, this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 17 - Redistributions in binary form must reproduce the above copyright
bogdanm 0:9b334a45a8ff 18 notice, this list of conditions and the following disclaimer in the
bogdanm 0:9b334a45a8ff 19 documentation and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 20 - Neither the name of ARM nor the names of its contributors may be used
bogdanm 0:9b334a45a8ff 21 to endorse or promote products derived from this software without
bogdanm 0:9b334a45a8ff 22 specific prior written permission.
bogdanm 0:9b334a45a8ff 23 *
bogdanm 0:9b334a45a8ff 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
bogdanm 0:9b334a45a8ff 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
bogdanm 0:9b334a45a8ff 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
bogdanm 0:9b334a45a8ff 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
bogdanm 0:9b334a45a8ff 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
bogdanm 0:9b334a45a8ff 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
bogdanm 0:9b334a45a8ff 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
bogdanm 0:9b334a45a8ff 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
bogdanm 0:9b334a45a8ff 34 POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 35 ---------------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 #ifndef __CORE_CMINSTR_H
bogdanm 0:9b334a45a8ff 39 #define __CORE_CMINSTR_H
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 /* ########################## Core Instruction Access ######################### */
bogdanm 0:9b334a45a8ff 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
bogdanm 0:9b334a45a8ff 44 Access to dedicated instructions
bogdanm 0:9b334a45a8ff 45 @{
bogdanm 0:9b334a45a8ff 46 */
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
bogdanm 0:9b334a45a8ff 49 /* ARM armcc specific functions */
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 #if (__ARMCC_VERSION < 400677)
bogdanm 0:9b334a45a8ff 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
bogdanm 0:9b334a45a8ff 53 #endif
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 /** \brief No Operation
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 No Operation does nothing. This instruction can be used for code alignment purposes.
bogdanm 0:9b334a45a8ff 59 */
bogdanm 0:9b334a45a8ff 60 #define __NOP __nop
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 /** \brief Wait For Interrupt
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 Wait For Interrupt is a hint instruction that suspends execution
bogdanm 0:9b334a45a8ff 66 until one of a number of events occurs.
bogdanm 0:9b334a45a8ff 67 */
bogdanm 0:9b334a45a8ff 68 #define __WFI __wfi
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71 /** \brief Wait For Event
bogdanm 0:9b334a45a8ff 72
bogdanm 0:9b334a45a8ff 73 Wait For Event is a hint instruction that permits the processor to enter
bogdanm 0:9b334a45a8ff 74 a low-power state until one of a number of events occurs.
bogdanm 0:9b334a45a8ff 75 */
bogdanm 0:9b334a45a8ff 76 #define __WFE __wfe
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78
bogdanm 0:9b334a45a8ff 79 /** \brief Send Event
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
bogdanm 0:9b334a45a8ff 82 */
bogdanm 0:9b334a45a8ff 83 #define __SEV __sev
bogdanm 0:9b334a45a8ff 84
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 /** \brief Instruction Synchronization Barrier
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
bogdanm 0:9b334a45a8ff 89 so that all instructions following the ISB are fetched from cache or
bogdanm 0:9b334a45a8ff 90 memory, after the instruction has been completed.
bogdanm 0:9b334a45a8ff 91 */
mbed_official 19:112740acecfa 92 #define __ISB() do {\
mbed_official 19:112740acecfa 93 __schedule_barrier();\
mbed_official 19:112740acecfa 94 __isb(0xF);\
mbed_official 19:112740acecfa 95 __schedule_barrier();\
mbed_official 19:112740acecfa 96 } while (0)
bogdanm 0:9b334a45a8ff 97
bogdanm 0:9b334a45a8ff 98 /** \brief Data Synchronization Barrier
bogdanm 0:9b334a45a8ff 99
bogdanm 0:9b334a45a8ff 100 This function acts as a special kind of Data Memory Barrier.
bogdanm 0:9b334a45a8ff 101 It completes when all explicit memory accesses before this instruction complete.
bogdanm 0:9b334a45a8ff 102 */
mbed_official 19:112740acecfa 103 #define __DSB() do {\
mbed_official 19:112740acecfa 104 __schedule_barrier();\
mbed_official 19:112740acecfa 105 __dsb(0xF);\
mbed_official 19:112740acecfa 106 __schedule_barrier();\
mbed_official 19:112740acecfa 107 } while (0)
bogdanm 0:9b334a45a8ff 108
bogdanm 0:9b334a45a8ff 109 /** \brief Data Memory Barrier
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 This function ensures the apparent order of the explicit memory operations before
bogdanm 0:9b334a45a8ff 112 and after the instruction, without ensuring their completion.
bogdanm 0:9b334a45a8ff 113 */
mbed_official 19:112740acecfa 114 #define __DMB() do {\
mbed_official 19:112740acecfa 115 __schedule_barrier();\
mbed_official 19:112740acecfa 116 __dmb(0xF);\
mbed_official 19:112740acecfa 117 __schedule_barrier();\
mbed_official 19:112740acecfa 118 } while (0)
bogdanm 0:9b334a45a8ff 119
bogdanm 0:9b334a45a8ff 120 /** \brief Reverse byte order (32 bit)
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 This function reverses the byte order in integer value.
bogdanm 0:9b334a45a8ff 123
bogdanm 0:9b334a45a8ff 124 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 125 \return Reversed value
bogdanm 0:9b334a45a8ff 126 */
bogdanm 0:9b334a45a8ff 127 #define __REV __rev
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129
bogdanm 0:9b334a45a8ff 130 /** \brief Reverse byte order (16 bit)
bogdanm 0:9b334a45a8ff 131
bogdanm 0:9b334a45a8ff 132 This function reverses the byte order in two unsigned short values.
bogdanm 0:9b334a45a8ff 133
bogdanm 0:9b334a45a8ff 134 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 135 \return Reversed value
bogdanm 0:9b334a45a8ff 136 */
bogdanm 0:9b334a45a8ff 137 #ifndef __NO_EMBEDDED_ASM
bogdanm 0:9b334a45a8ff 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
bogdanm 0:9b334a45a8ff 139 {
bogdanm 0:9b334a45a8ff 140 rev16 r0, r0
bogdanm 0:9b334a45a8ff 141 bx lr
bogdanm 0:9b334a45a8ff 142 }
bogdanm 0:9b334a45a8ff 143 #endif
bogdanm 0:9b334a45a8ff 144
bogdanm 0:9b334a45a8ff 145 /** \brief Reverse byte order in signed short value
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 This function reverses the byte order in a signed short value with sign extension to integer.
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 150 \return Reversed value
bogdanm 0:9b334a45a8ff 151 */
bogdanm 0:9b334a45a8ff 152 #ifndef __NO_EMBEDDED_ASM
bogdanm 0:9b334a45a8ff 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
bogdanm 0:9b334a45a8ff 154 {
bogdanm 0:9b334a45a8ff 155 revsh r0, r0
bogdanm 0:9b334a45a8ff 156 bx lr
bogdanm 0:9b334a45a8ff 157 }
bogdanm 0:9b334a45a8ff 158 #endif
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160
bogdanm 0:9b334a45a8ff 161 /** \brief Rotate Right in unsigned value (32 bit)
bogdanm 0:9b334a45a8ff 162
bogdanm 0:9b334a45a8ff 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
bogdanm 0:9b334a45a8ff 164
bogdanm 0:9b334a45a8ff 165 \param [in] value Value to rotate
bogdanm 0:9b334a45a8ff 166 \param [in] value Number of Bits to rotate
bogdanm 0:9b334a45a8ff 167 \return Rotated value
bogdanm 0:9b334a45a8ff 168 */
bogdanm 0:9b334a45a8ff 169 #define __ROR __ror
bogdanm 0:9b334a45a8ff 170
bogdanm 0:9b334a45a8ff 171
bogdanm 0:9b334a45a8ff 172 /** \brief Breakpoint
bogdanm 0:9b334a45a8ff 173
bogdanm 0:9b334a45a8ff 174 This function causes the processor to enter Debug state.
bogdanm 0:9b334a45a8ff 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
bogdanm 0:9b334a45a8ff 176
bogdanm 0:9b334a45a8ff 177 \param [in] value is ignored by the processor.
bogdanm 0:9b334a45a8ff 178 If required, a debugger can use it to store additional information about the breakpoint.
bogdanm 0:9b334a45a8ff 179 */
bogdanm 0:9b334a45a8ff 180 #define __BKPT(value) __breakpoint(value)
bogdanm 0:9b334a45a8ff 181
bogdanm 0:9b334a45a8ff 182
bogdanm 0:9b334a45a8ff 183 /** \brief Reverse bit order of value
bogdanm 0:9b334a45a8ff 184
bogdanm 0:9b334a45a8ff 185 This function reverses the bit order of the given value.
bogdanm 0:9b334a45a8ff 186
bogdanm 0:9b334a45a8ff 187 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 188 \return Reversed value
bogdanm 0:9b334a45a8ff 189 */
mbed_official 19:112740acecfa 190 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
mbed_official 19:112740acecfa 191 #define __RBIT __rbit
mbed_official 19:112740acecfa 192 #else
mbed_official 19:112740acecfa 193 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
mbed_official 19:112740acecfa 194 {
mbed_official 19:112740acecfa 195 uint32_t result;
mbed_official 19:112740acecfa 196 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
bogdanm 0:9b334a45a8ff 197
mbed_official 19:112740acecfa 198 result = value; // r will be reversed bits of v; first get LSB of v
mbed_official 19:112740acecfa 199 for (value >>= 1; value; value >>= 1)
mbed_official 19:112740acecfa 200 {
mbed_official 19:112740acecfa 201 result <<= 1;
mbed_official 19:112740acecfa 202 result |= value & 1;
mbed_official 19:112740acecfa 203 s--;
mbed_official 19:112740acecfa 204 }
mbed_official 19:112740acecfa 205 result <<= s; // shift when v's highest bits are zero
mbed_official 19:112740acecfa 206 return(result);
mbed_official 19:112740acecfa 207 }
mbed_official 19:112740acecfa 208 #endif
mbed_official 19:112740acecfa 209
mbed_official 19:112740acecfa 210
mbed_official 19:112740acecfa 211 /** \brief Count leading zeros
mbed_official 19:112740acecfa 212
mbed_official 19:112740acecfa 213 This function counts the number of leading zeros of a data value.
mbed_official 19:112740acecfa 214
mbed_official 19:112740acecfa 215 \param [in] value Value to count the leading zeros
mbed_official 19:112740acecfa 216 \return number of leading zeros in value
mbed_official 19:112740acecfa 217 */
mbed_official 19:112740acecfa 218 #define __CLZ __clz
mbed_official 19:112740acecfa 219
mbed_official 19:112740acecfa 220
mbed_official 19:112740acecfa 221 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
bogdanm 0:9b334a45a8ff 222
bogdanm 0:9b334a45a8ff 223 /** \brief LDR Exclusive (8 bit)
bogdanm 0:9b334a45a8ff 224
mbed_official 19:112740acecfa 225 This function executes a exclusive LDR instruction for 8 bit value.
bogdanm 0:9b334a45a8ff 226
bogdanm 0:9b334a45a8ff 227 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 228 \return value of type uint8_t at (*ptr)
bogdanm 0:9b334a45a8ff 229 */
bogdanm 0:9b334a45a8ff 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
bogdanm 0:9b334a45a8ff 231
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 /** \brief LDR Exclusive (16 bit)
bogdanm 0:9b334a45a8ff 234
mbed_official 19:112740acecfa 235 This function executes a exclusive LDR instruction for 16 bit values.
bogdanm 0:9b334a45a8ff 236
bogdanm 0:9b334a45a8ff 237 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 238 \return value of type uint16_t at (*ptr)
bogdanm 0:9b334a45a8ff 239 */
bogdanm 0:9b334a45a8ff 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
bogdanm 0:9b334a45a8ff 241
bogdanm 0:9b334a45a8ff 242
bogdanm 0:9b334a45a8ff 243 /** \brief LDR Exclusive (32 bit)
bogdanm 0:9b334a45a8ff 244
mbed_official 19:112740acecfa 245 This function executes a exclusive LDR instruction for 32 bit values.
bogdanm 0:9b334a45a8ff 246
bogdanm 0:9b334a45a8ff 247 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 248 \return value of type uint32_t at (*ptr)
bogdanm 0:9b334a45a8ff 249 */
bogdanm 0:9b334a45a8ff 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
bogdanm 0:9b334a45a8ff 251
bogdanm 0:9b334a45a8ff 252
bogdanm 0:9b334a45a8ff 253 /** \brief STR Exclusive (8 bit)
bogdanm 0:9b334a45a8ff 254
mbed_official 19:112740acecfa 255 This function executes a exclusive STR instruction for 8 bit values.
bogdanm 0:9b334a45a8ff 256
bogdanm 0:9b334a45a8ff 257 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 258 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 259 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 260 \return 1 Function failed
bogdanm 0:9b334a45a8ff 261 */
bogdanm 0:9b334a45a8ff 262 #define __STREXB(value, ptr) __strex(value, ptr)
bogdanm 0:9b334a45a8ff 263
bogdanm 0:9b334a45a8ff 264
bogdanm 0:9b334a45a8ff 265 /** \brief STR Exclusive (16 bit)
bogdanm 0:9b334a45a8ff 266
mbed_official 19:112740acecfa 267 This function executes a exclusive STR instruction for 16 bit values.
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 270 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 271 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 272 \return 1 Function failed
bogdanm 0:9b334a45a8ff 273 */
bogdanm 0:9b334a45a8ff 274 #define __STREXH(value, ptr) __strex(value, ptr)
bogdanm 0:9b334a45a8ff 275
bogdanm 0:9b334a45a8ff 276
bogdanm 0:9b334a45a8ff 277 /** \brief STR Exclusive (32 bit)
bogdanm 0:9b334a45a8ff 278
mbed_official 19:112740acecfa 279 This function executes a exclusive STR instruction for 32 bit values.
bogdanm 0:9b334a45a8ff 280
bogdanm 0:9b334a45a8ff 281 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 282 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 283 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 284 \return 1 Function failed
bogdanm 0:9b334a45a8ff 285 */
bogdanm 0:9b334a45a8ff 286 #define __STREXW(value, ptr) __strex(value, ptr)
bogdanm 0:9b334a45a8ff 287
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 /** \brief Remove the exclusive lock
bogdanm 0:9b334a45a8ff 290
bogdanm 0:9b334a45a8ff 291 This function removes the exclusive lock which is created by LDREX.
bogdanm 0:9b334a45a8ff 292
bogdanm 0:9b334a45a8ff 293 */
bogdanm 0:9b334a45a8ff 294 #define __CLREX __clrex
bogdanm 0:9b334a45a8ff 295
bogdanm 0:9b334a45a8ff 296
bogdanm 0:9b334a45a8ff 297 /** \brief Signed Saturate
bogdanm 0:9b334a45a8ff 298
bogdanm 0:9b334a45a8ff 299 This function saturates a signed value.
bogdanm 0:9b334a45a8ff 300
bogdanm 0:9b334a45a8ff 301 \param [in] value Value to be saturated
bogdanm 0:9b334a45a8ff 302 \param [in] sat Bit position to saturate to (1..32)
bogdanm 0:9b334a45a8ff 303 \return Saturated value
bogdanm 0:9b334a45a8ff 304 */
bogdanm 0:9b334a45a8ff 305 #define __SSAT __ssat
bogdanm 0:9b334a45a8ff 306
bogdanm 0:9b334a45a8ff 307
bogdanm 0:9b334a45a8ff 308 /** \brief Unsigned Saturate
bogdanm 0:9b334a45a8ff 309
bogdanm 0:9b334a45a8ff 310 This function saturates an unsigned value.
bogdanm 0:9b334a45a8ff 311
bogdanm 0:9b334a45a8ff 312 \param [in] value Value to be saturated
bogdanm 0:9b334a45a8ff 313 \param [in] sat Bit position to saturate to (0..31)
bogdanm 0:9b334a45a8ff 314 \return Saturated value
bogdanm 0:9b334a45a8ff 315 */
bogdanm 0:9b334a45a8ff 316 #define __USAT __usat
bogdanm 0:9b334a45a8ff 317
bogdanm 0:9b334a45a8ff 318
mbed_official 19:112740acecfa 319 /** \brief Rotate Right with Extend (32 bit)
mbed_official 19:112740acecfa 320
mbed_official 19:112740acecfa 321 This function moves each bit of a bitstring right by one bit.
mbed_official 19:112740acecfa 322 The carry input is shifted in at the left end of the bitstring.
bogdanm 0:9b334a45a8ff 323
mbed_official 19:112740acecfa 324 \param [in] value Value to rotate
mbed_official 19:112740acecfa 325 \return Rotated value
mbed_official 19:112740acecfa 326 */
mbed_official 19:112740acecfa 327 #ifndef __NO_EMBEDDED_ASM
mbed_official 19:112740acecfa 328 __attribute__((section(".rrx_text"))) __STATIC_INLINE __ASM uint32_t __RRX(uint32_t value)
mbed_official 19:112740acecfa 329 {
mbed_official 19:112740acecfa 330 rrx r0, r0
mbed_official 19:112740acecfa 331 bx lr
mbed_official 19:112740acecfa 332 }
mbed_official 19:112740acecfa 333 #endif
mbed_official 19:112740acecfa 334
bogdanm 0:9b334a45a8ff 335
mbed_official 19:112740acecfa 336 /** \brief LDRT Unprivileged (8 bit)
mbed_official 19:112740acecfa 337
mbed_official 19:112740acecfa 338 This function executes a Unprivileged LDRT instruction for 8 bit value.
mbed_official 19:112740acecfa 339
mbed_official 19:112740acecfa 340 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 341 \return value of type uint8_t at (*ptr)
bogdanm 0:9b334a45a8ff 342 */
mbed_official 19:112740acecfa 343 #define __LDRBT(ptr) ((uint8_t ) __ldrt(ptr))
mbed_official 19:112740acecfa 344
mbed_official 19:112740acecfa 345
mbed_official 19:112740acecfa 346 /** \brief LDRT Unprivileged (16 bit)
bogdanm 0:9b334a45a8ff 347
mbed_official 19:112740acecfa 348 This function executes a Unprivileged LDRT instruction for 16 bit values.
mbed_official 19:112740acecfa 349
mbed_official 19:112740acecfa 350 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 351 \return value of type uint16_t at (*ptr)
mbed_official 19:112740acecfa 352 */
mbed_official 19:112740acecfa 353 #define __LDRHT(ptr) ((uint16_t) __ldrt(ptr))
bogdanm 0:9b334a45a8ff 354
bogdanm 0:9b334a45a8ff 355
mbed_official 19:112740acecfa 356 /** \brief LDRT Unprivileged (32 bit)
bogdanm 0:9b334a45a8ff 357
mbed_official 19:112740acecfa 358 This function executes a Unprivileged LDRT instruction for 32 bit values.
mbed_official 19:112740acecfa 359
mbed_official 19:112740acecfa 360 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 361 \return value of type uint32_t at (*ptr)
mbed_official 19:112740acecfa 362 */
mbed_official 19:112740acecfa 363 #define __LDRT(ptr) ((uint32_t ) __ldrt(ptr))
mbed_official 19:112740acecfa 364
bogdanm 0:9b334a45a8ff 365
mbed_official 19:112740acecfa 366 /** \brief STRT Unprivileged (8 bit)
mbed_official 19:112740acecfa 367
mbed_official 19:112740acecfa 368 This function executes a Unprivileged STRT instruction for 8 bit values.
mbed_official 19:112740acecfa 369
mbed_official 19:112740acecfa 370 \param [in] value Value to store
mbed_official 19:112740acecfa 371 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 372 */
mbed_official 19:112740acecfa 373 #define __STRBT(value, ptr) __strt(value, ptr)
bogdanm 0:9b334a45a8ff 374
bogdanm 0:9b334a45a8ff 375
mbed_official 19:112740acecfa 376 /** \brief STRT Unprivileged (16 bit)
mbed_official 19:112740acecfa 377
mbed_official 19:112740acecfa 378 This function executes a Unprivileged STRT instruction for 16 bit values.
mbed_official 19:112740acecfa 379
mbed_official 19:112740acecfa 380 \param [in] value Value to store
mbed_official 19:112740acecfa 381 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 382 */
mbed_official 19:112740acecfa 383 #define __STRHT(value, ptr) __strt(value, ptr)
mbed_official 19:112740acecfa 384
bogdanm 0:9b334a45a8ff 385
mbed_official 19:112740acecfa 386 /** \brief STRT Unprivileged (32 bit)
mbed_official 19:112740acecfa 387
mbed_official 19:112740acecfa 388 This function executes a Unprivileged STRT instruction for 32 bit values.
mbed_official 19:112740acecfa 389
mbed_official 19:112740acecfa 390 \param [in] value Value to store
mbed_official 19:112740acecfa 391 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 392 */
mbed_official 19:112740acecfa 393 #define __STRT(value, ptr) __strt(value, ptr)
mbed_official 19:112740acecfa 394
mbed_official 19:112740acecfa 395 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
bogdanm 0:9b334a45a8ff 396
bogdanm 0:9b334a45a8ff 397
bogdanm 0:9b334a45a8ff 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
bogdanm 0:9b334a45a8ff 399 /* GNU gcc specific functions */
bogdanm 0:9b334a45a8ff 400
bogdanm 0:9b334a45a8ff 401 /* Define macros for porting to both thumb1 and thumb2.
bogdanm 0:9b334a45a8ff 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
bogdanm 0:9b334a45a8ff 403 * Otherwise, use general registers, specified by constrant "r" */
bogdanm 0:9b334a45a8ff 404 #if defined (__thumb__) && !defined (__thumb2__)
bogdanm 0:9b334a45a8ff 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
bogdanm 0:9b334a45a8ff 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
bogdanm 0:9b334a45a8ff 407 #else
bogdanm 0:9b334a45a8ff 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
bogdanm 0:9b334a45a8ff 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
bogdanm 0:9b334a45a8ff 410 #endif
bogdanm 0:9b334a45a8ff 411
bogdanm 0:9b334a45a8ff 412 /** \brief No Operation
bogdanm 0:9b334a45a8ff 413
bogdanm 0:9b334a45a8ff 414 No Operation does nothing. This instruction can be used for code alignment purposes.
bogdanm 0:9b334a45a8ff 415 */
mbed_official 19:112740acecfa 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
bogdanm 0:9b334a45a8ff 417 {
bogdanm 0:9b334a45a8ff 418 __ASM volatile ("nop");
bogdanm 0:9b334a45a8ff 419 }
bogdanm 0:9b334a45a8ff 420
bogdanm 0:9b334a45a8ff 421
bogdanm 0:9b334a45a8ff 422 /** \brief Wait For Interrupt
bogdanm 0:9b334a45a8ff 423
bogdanm 0:9b334a45a8ff 424 Wait For Interrupt is a hint instruction that suspends execution
bogdanm 0:9b334a45a8ff 425 until one of a number of events occurs.
bogdanm 0:9b334a45a8ff 426 */
mbed_official 19:112740acecfa 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
bogdanm 0:9b334a45a8ff 428 {
bogdanm 0:9b334a45a8ff 429 __ASM volatile ("wfi");
bogdanm 0:9b334a45a8ff 430 }
bogdanm 0:9b334a45a8ff 431
bogdanm 0:9b334a45a8ff 432
bogdanm 0:9b334a45a8ff 433 /** \brief Wait For Event
bogdanm 0:9b334a45a8ff 434
bogdanm 0:9b334a45a8ff 435 Wait For Event is a hint instruction that permits the processor to enter
bogdanm 0:9b334a45a8ff 436 a low-power state until one of a number of events occurs.
bogdanm 0:9b334a45a8ff 437 */
mbed_official 19:112740acecfa 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
bogdanm 0:9b334a45a8ff 439 {
bogdanm 0:9b334a45a8ff 440 __ASM volatile ("wfe");
bogdanm 0:9b334a45a8ff 441 }
bogdanm 0:9b334a45a8ff 442
bogdanm 0:9b334a45a8ff 443
bogdanm 0:9b334a45a8ff 444 /** \brief Send Event
bogdanm 0:9b334a45a8ff 445
bogdanm 0:9b334a45a8ff 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
bogdanm 0:9b334a45a8ff 447 */
mbed_official 19:112740acecfa 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
bogdanm 0:9b334a45a8ff 449 {
bogdanm 0:9b334a45a8ff 450 __ASM volatile ("sev");
bogdanm 0:9b334a45a8ff 451 }
bogdanm 0:9b334a45a8ff 452
bogdanm 0:9b334a45a8ff 453
bogdanm 0:9b334a45a8ff 454 /** \brief Instruction Synchronization Barrier
bogdanm 0:9b334a45a8ff 455
bogdanm 0:9b334a45a8ff 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
bogdanm 0:9b334a45a8ff 457 so that all instructions following the ISB are fetched from cache or
bogdanm 0:9b334a45a8ff 458 memory, after the instruction has been completed.
bogdanm 0:9b334a45a8ff 459 */
mbed_official 19:112740acecfa 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
bogdanm 0:9b334a45a8ff 461 {
mbed_official 19:112740acecfa 462 __ASM volatile ("isb 0xF":::"memory");
bogdanm 0:9b334a45a8ff 463 }
bogdanm 0:9b334a45a8ff 464
bogdanm 0:9b334a45a8ff 465
bogdanm 0:9b334a45a8ff 466 /** \brief Data Synchronization Barrier
bogdanm 0:9b334a45a8ff 467
bogdanm 0:9b334a45a8ff 468 This function acts as a special kind of Data Memory Barrier.
bogdanm 0:9b334a45a8ff 469 It completes when all explicit memory accesses before this instruction complete.
bogdanm 0:9b334a45a8ff 470 */
mbed_official 19:112740acecfa 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
bogdanm 0:9b334a45a8ff 472 {
mbed_official 19:112740acecfa 473 __ASM volatile ("dsb 0xF":::"memory");
bogdanm 0:9b334a45a8ff 474 }
bogdanm 0:9b334a45a8ff 475
bogdanm 0:9b334a45a8ff 476
bogdanm 0:9b334a45a8ff 477 /** \brief Data Memory Barrier
bogdanm 0:9b334a45a8ff 478
bogdanm 0:9b334a45a8ff 479 This function ensures the apparent order of the explicit memory operations before
bogdanm 0:9b334a45a8ff 480 and after the instruction, without ensuring their completion.
bogdanm 0:9b334a45a8ff 481 */
mbed_official 19:112740acecfa 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
bogdanm 0:9b334a45a8ff 483 {
mbed_official 19:112740acecfa 484 __ASM volatile ("dmb 0xF":::"memory");
bogdanm 0:9b334a45a8ff 485 }
bogdanm 0:9b334a45a8ff 486
bogdanm 0:9b334a45a8ff 487
bogdanm 0:9b334a45a8ff 488 /** \brief Reverse byte order (32 bit)
bogdanm 0:9b334a45a8ff 489
bogdanm 0:9b334a45a8ff 490 This function reverses the byte order in integer value.
bogdanm 0:9b334a45a8ff 491
bogdanm 0:9b334a45a8ff 492 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 493 \return Reversed value
bogdanm 0:9b334a45a8ff 494 */
mbed_official 19:112740acecfa 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
bogdanm 0:9b334a45a8ff 496 {
bogdanm 0:9b334a45a8ff 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
bogdanm 0:9b334a45a8ff 498 return __builtin_bswap32(value);
bogdanm 0:9b334a45a8ff 499 #else
bogdanm 0:9b334a45a8ff 500 uint32_t result;
bogdanm 0:9b334a45a8ff 501
bogdanm 0:9b334a45a8ff 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
bogdanm 0:9b334a45a8ff 503 return(result);
bogdanm 0:9b334a45a8ff 504 #endif
bogdanm 0:9b334a45a8ff 505 }
bogdanm 0:9b334a45a8ff 506
bogdanm 0:9b334a45a8ff 507
bogdanm 0:9b334a45a8ff 508 /** \brief Reverse byte order (16 bit)
bogdanm 0:9b334a45a8ff 509
bogdanm 0:9b334a45a8ff 510 This function reverses the byte order in two unsigned short values.
bogdanm 0:9b334a45a8ff 511
bogdanm 0:9b334a45a8ff 512 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 513 \return Reversed value
bogdanm 0:9b334a45a8ff 514 */
mbed_official 19:112740acecfa 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
bogdanm 0:9b334a45a8ff 516 {
bogdanm 0:9b334a45a8ff 517 uint32_t result;
bogdanm 0:9b334a45a8ff 518
bogdanm 0:9b334a45a8ff 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
bogdanm 0:9b334a45a8ff 520 return(result);
bogdanm 0:9b334a45a8ff 521 }
bogdanm 0:9b334a45a8ff 522
bogdanm 0:9b334a45a8ff 523
bogdanm 0:9b334a45a8ff 524 /** \brief Reverse byte order in signed short value
bogdanm 0:9b334a45a8ff 525
bogdanm 0:9b334a45a8ff 526 This function reverses the byte order in a signed short value with sign extension to integer.
bogdanm 0:9b334a45a8ff 527
bogdanm 0:9b334a45a8ff 528 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 529 \return Reversed value
bogdanm 0:9b334a45a8ff 530 */
mbed_official 19:112740acecfa 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
bogdanm 0:9b334a45a8ff 532 {
bogdanm 0:9b334a45a8ff 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
bogdanm 0:9b334a45a8ff 534 return (short)__builtin_bswap16(value);
bogdanm 0:9b334a45a8ff 535 #else
bogdanm 0:9b334a45a8ff 536 uint32_t result;
bogdanm 0:9b334a45a8ff 537
bogdanm 0:9b334a45a8ff 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
bogdanm 0:9b334a45a8ff 539 return(result);
bogdanm 0:9b334a45a8ff 540 #endif
bogdanm 0:9b334a45a8ff 541 }
bogdanm 0:9b334a45a8ff 542
bogdanm 0:9b334a45a8ff 543
bogdanm 0:9b334a45a8ff 544 /** \brief Rotate Right in unsigned value (32 bit)
bogdanm 0:9b334a45a8ff 545
bogdanm 0:9b334a45a8ff 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
bogdanm 0:9b334a45a8ff 547
bogdanm 0:9b334a45a8ff 548 \param [in] value Value to rotate
bogdanm 0:9b334a45a8ff 549 \param [in] value Number of Bits to rotate
bogdanm 0:9b334a45a8ff 550 \return Rotated value
bogdanm 0:9b334a45a8ff 551 */
mbed_official 19:112740acecfa 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
bogdanm 0:9b334a45a8ff 553 {
mbed_official 19:112740acecfa 554 return (op1 >> op2) | (op1 << (32 - op2));
bogdanm 0:9b334a45a8ff 555 }
bogdanm 0:9b334a45a8ff 556
bogdanm 0:9b334a45a8ff 557
bogdanm 0:9b334a45a8ff 558 /** \brief Breakpoint
bogdanm 0:9b334a45a8ff 559
bogdanm 0:9b334a45a8ff 560 This function causes the processor to enter Debug state.
bogdanm 0:9b334a45a8ff 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
bogdanm 0:9b334a45a8ff 562
bogdanm 0:9b334a45a8ff 563 \param [in] value is ignored by the processor.
bogdanm 0:9b334a45a8ff 564 If required, a debugger can use it to store additional information about the breakpoint.
bogdanm 0:9b334a45a8ff 565 */
bogdanm 0:9b334a45a8ff 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
bogdanm 0:9b334a45a8ff 567
bogdanm 0:9b334a45a8ff 568
bogdanm 0:9b334a45a8ff 569 /** \brief Reverse bit order of value
bogdanm 0:9b334a45a8ff 570
bogdanm 0:9b334a45a8ff 571 This function reverses the bit order of the given value.
bogdanm 0:9b334a45a8ff 572
bogdanm 0:9b334a45a8ff 573 \param [in] value Value to reverse
bogdanm 0:9b334a45a8ff 574 \return Reversed value
bogdanm 0:9b334a45a8ff 575 */
mbed_official 19:112740acecfa 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
bogdanm 0:9b334a45a8ff 577 {
bogdanm 0:9b334a45a8ff 578 uint32_t result;
bogdanm 0:9b334a45a8ff 579
mbed_official 19:112740acecfa 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
bogdanm 0:9b334a45a8ff 581 __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) );
mbed_official 19:112740acecfa 582 #else
mbed_official 19:112740acecfa 583 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
mbed_official 19:112740acecfa 584
mbed_official 19:112740acecfa 585 result = value; // r will be reversed bits of v; first get LSB of v
mbed_official 19:112740acecfa 586 for (value >>= 1; value; value >>= 1)
mbed_official 19:112740acecfa 587 {
mbed_official 19:112740acecfa 588 result <<= 1;
mbed_official 19:112740acecfa 589 result |= value & 1;
mbed_official 19:112740acecfa 590 s--;
mbed_official 19:112740acecfa 591 }
mbed_official 19:112740acecfa 592 result <<= s; // shift when v's highest bits are zero
mbed_official 19:112740acecfa 593 #endif
mbed_official 19:112740acecfa 594 return(result);
bogdanm 0:9b334a45a8ff 595 }
bogdanm 0:9b334a45a8ff 596
bogdanm 0:9b334a45a8ff 597
mbed_official 19:112740acecfa 598 /** \brief Count leading zeros
mbed_official 19:112740acecfa 599
mbed_official 19:112740acecfa 600 This function counts the number of leading zeros of a data value.
mbed_official 19:112740acecfa 601
mbed_official 19:112740acecfa 602 \param [in] value Value to count the leading zeros
mbed_official 19:112740acecfa 603 \return number of leading zeros in value
mbed_official 19:112740acecfa 604 */
mbed_official 19:112740acecfa 605 #define __CLZ __builtin_clz
mbed_official 19:112740acecfa 606
mbed_official 19:112740acecfa 607
mbed_official 19:112740acecfa 608 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
mbed_official 19:112740acecfa 609
bogdanm 0:9b334a45a8ff 610 /** \brief LDR Exclusive (8 bit)
bogdanm 0:9b334a45a8ff 611
mbed_official 19:112740acecfa 612 This function executes a exclusive LDR instruction for 8 bit value.
bogdanm 0:9b334a45a8ff 613
bogdanm 0:9b334a45a8ff 614 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 615 \return value of type uint8_t at (*ptr)
bogdanm 0:9b334a45a8ff 616 */
mbed_official 19:112740acecfa 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
bogdanm 0:9b334a45a8ff 618 {
bogdanm 0:9b334a45a8ff 619 uint32_t result;
bogdanm 0:9b334a45a8ff 620
bogdanm 0:9b334a45a8ff 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
bogdanm 0:9b334a45a8ff 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
bogdanm 0:9b334a45a8ff 623 #else
bogdanm 0:9b334a45a8ff 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
bogdanm 0:9b334a45a8ff 625 accepted by assembler. So has to use following less efficient pattern.
bogdanm 0:9b334a45a8ff 626 */
bogdanm 0:9b334a45a8ff 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
bogdanm 0:9b334a45a8ff 628 #endif
mbed_official 19:112740acecfa 629 return ((uint8_t) result); /* Add explicit type cast here */
bogdanm 0:9b334a45a8ff 630 }
bogdanm 0:9b334a45a8ff 631
bogdanm 0:9b334a45a8ff 632
bogdanm 0:9b334a45a8ff 633 /** \brief LDR Exclusive (16 bit)
bogdanm 0:9b334a45a8ff 634
mbed_official 19:112740acecfa 635 This function executes a exclusive LDR instruction for 16 bit values.
bogdanm 0:9b334a45a8ff 636
bogdanm 0:9b334a45a8ff 637 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 638 \return value of type uint16_t at (*ptr)
bogdanm 0:9b334a45a8ff 639 */
mbed_official 19:112740acecfa 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
bogdanm 0:9b334a45a8ff 641 {
bogdanm 0:9b334a45a8ff 642 uint32_t result;
bogdanm 0:9b334a45a8ff 643
bogdanm 0:9b334a45a8ff 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
bogdanm 0:9b334a45a8ff 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
bogdanm 0:9b334a45a8ff 646 #else
bogdanm 0:9b334a45a8ff 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
bogdanm 0:9b334a45a8ff 648 accepted by assembler. So has to use following less efficient pattern.
bogdanm 0:9b334a45a8ff 649 */
bogdanm 0:9b334a45a8ff 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
bogdanm 0:9b334a45a8ff 651 #endif
mbed_official 19:112740acecfa 652 return ((uint16_t) result); /* Add explicit type cast here */
bogdanm 0:9b334a45a8ff 653 }
bogdanm 0:9b334a45a8ff 654
bogdanm 0:9b334a45a8ff 655
bogdanm 0:9b334a45a8ff 656 /** \brief LDR Exclusive (32 bit)
bogdanm 0:9b334a45a8ff 657
mbed_official 19:112740acecfa 658 This function executes a exclusive LDR instruction for 32 bit values.
bogdanm 0:9b334a45a8ff 659
bogdanm 0:9b334a45a8ff 660 \param [in] ptr Pointer to data
bogdanm 0:9b334a45a8ff 661 \return value of type uint32_t at (*ptr)
bogdanm 0:9b334a45a8ff 662 */
mbed_official 19:112740acecfa 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
bogdanm 0:9b334a45a8ff 664 {
bogdanm 0:9b334a45a8ff 665 uint32_t result;
bogdanm 0:9b334a45a8ff 666
bogdanm 0:9b334a45a8ff 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
bogdanm 0:9b334a45a8ff 668 return(result);
bogdanm 0:9b334a45a8ff 669 }
bogdanm 0:9b334a45a8ff 670
bogdanm 0:9b334a45a8ff 671
bogdanm 0:9b334a45a8ff 672 /** \brief STR Exclusive (8 bit)
bogdanm 0:9b334a45a8ff 673
mbed_official 19:112740acecfa 674 This function executes a exclusive STR instruction for 8 bit values.
bogdanm 0:9b334a45a8ff 675
bogdanm 0:9b334a45a8ff 676 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 677 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 678 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 679 \return 1 Function failed
bogdanm 0:9b334a45a8ff 680 */
mbed_official 19:112740acecfa 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
bogdanm 0:9b334a45a8ff 682 {
bogdanm 0:9b334a45a8ff 683 uint32_t result;
bogdanm 0:9b334a45a8ff 684
mbed_official 19:112740acecfa 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
bogdanm 0:9b334a45a8ff 686 return(result);
bogdanm 0:9b334a45a8ff 687 }
bogdanm 0:9b334a45a8ff 688
bogdanm 0:9b334a45a8ff 689
bogdanm 0:9b334a45a8ff 690 /** \brief STR Exclusive (16 bit)
bogdanm 0:9b334a45a8ff 691
mbed_official 19:112740acecfa 692 This function executes a exclusive STR instruction for 16 bit values.
bogdanm 0:9b334a45a8ff 693
bogdanm 0:9b334a45a8ff 694 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 695 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 696 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 697 \return 1 Function failed
bogdanm 0:9b334a45a8ff 698 */
mbed_official 19:112740acecfa 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
bogdanm 0:9b334a45a8ff 700 {
bogdanm 0:9b334a45a8ff 701 uint32_t result;
bogdanm 0:9b334a45a8ff 702
mbed_official 19:112740acecfa 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
bogdanm 0:9b334a45a8ff 704 return(result);
bogdanm 0:9b334a45a8ff 705 }
bogdanm 0:9b334a45a8ff 706
bogdanm 0:9b334a45a8ff 707
bogdanm 0:9b334a45a8ff 708 /** \brief STR Exclusive (32 bit)
bogdanm 0:9b334a45a8ff 709
mbed_official 19:112740acecfa 710 This function executes a exclusive STR instruction for 32 bit values.
bogdanm 0:9b334a45a8ff 711
bogdanm 0:9b334a45a8ff 712 \param [in] value Value to store
bogdanm 0:9b334a45a8ff 713 \param [in] ptr Pointer to location
bogdanm 0:9b334a45a8ff 714 \return 0 Function succeeded
bogdanm 0:9b334a45a8ff 715 \return 1 Function failed
bogdanm 0:9b334a45a8ff 716 */
mbed_official 19:112740acecfa 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
bogdanm 0:9b334a45a8ff 718 {
bogdanm 0:9b334a45a8ff 719 uint32_t result;
bogdanm 0:9b334a45a8ff 720
bogdanm 0:9b334a45a8ff 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
bogdanm 0:9b334a45a8ff 722 return(result);
bogdanm 0:9b334a45a8ff 723 }
bogdanm 0:9b334a45a8ff 724
bogdanm 0:9b334a45a8ff 725
bogdanm 0:9b334a45a8ff 726 /** \brief Remove the exclusive lock
bogdanm 0:9b334a45a8ff 727
bogdanm 0:9b334a45a8ff 728 This function removes the exclusive lock which is created by LDREX.
bogdanm 0:9b334a45a8ff 729
bogdanm 0:9b334a45a8ff 730 */
mbed_official 19:112740acecfa 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
bogdanm 0:9b334a45a8ff 732 {
bogdanm 0:9b334a45a8ff 733 __ASM volatile ("clrex" ::: "memory");
bogdanm 0:9b334a45a8ff 734 }
bogdanm 0:9b334a45a8ff 735
bogdanm 0:9b334a45a8ff 736
bogdanm 0:9b334a45a8ff 737 /** \brief Signed Saturate
bogdanm 0:9b334a45a8ff 738
bogdanm 0:9b334a45a8ff 739 This function saturates a signed value.
bogdanm 0:9b334a45a8ff 740
bogdanm 0:9b334a45a8ff 741 \param [in] value Value to be saturated
bogdanm 0:9b334a45a8ff 742 \param [in] sat Bit position to saturate to (1..32)
bogdanm 0:9b334a45a8ff 743 \return Saturated value
bogdanm 0:9b334a45a8ff 744 */
bogdanm 0:9b334a45a8ff 745 #define __SSAT(ARG1,ARG2) \
bogdanm 0:9b334a45a8ff 746 ({ \
bogdanm 0:9b334a45a8ff 747 uint32_t __RES, __ARG1 = (ARG1); \
bogdanm 0:9b334a45a8ff 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
bogdanm 0:9b334a45a8ff 749 __RES; \
bogdanm 0:9b334a45a8ff 750 })
bogdanm 0:9b334a45a8ff 751
bogdanm 0:9b334a45a8ff 752
bogdanm 0:9b334a45a8ff 753 /** \brief Unsigned Saturate
bogdanm 0:9b334a45a8ff 754
bogdanm 0:9b334a45a8ff 755 This function saturates an unsigned value.
bogdanm 0:9b334a45a8ff 756
bogdanm 0:9b334a45a8ff 757 \param [in] value Value to be saturated
bogdanm 0:9b334a45a8ff 758 \param [in] sat Bit position to saturate to (0..31)
bogdanm 0:9b334a45a8ff 759 \return Saturated value
bogdanm 0:9b334a45a8ff 760 */
bogdanm 0:9b334a45a8ff 761 #define __USAT(ARG1,ARG2) \
bogdanm 0:9b334a45a8ff 762 ({ \
bogdanm 0:9b334a45a8ff 763 uint32_t __RES, __ARG1 = (ARG1); \
bogdanm 0:9b334a45a8ff 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
bogdanm 0:9b334a45a8ff 765 __RES; \
bogdanm 0:9b334a45a8ff 766 })
bogdanm 0:9b334a45a8ff 767
bogdanm 0:9b334a45a8ff 768
mbed_official 19:112740acecfa 769 /** \brief Rotate Right with Extend (32 bit)
bogdanm 0:9b334a45a8ff 770
mbed_official 19:112740acecfa 771 This function moves each bit of a bitstring right by one bit.
mbed_official 19:112740acecfa 772 The carry input is shifted in at the left end of the bitstring.
bogdanm 0:9b334a45a8ff 773
mbed_official 19:112740acecfa 774 \param [in] value Value to rotate
mbed_official 19:112740acecfa 775 \return Rotated value
bogdanm 0:9b334a45a8ff 776 */
mbed_official 19:112740acecfa 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
bogdanm 0:9b334a45a8ff 778 {
mbed_official 19:112740acecfa 779 uint32_t result;
bogdanm 0:9b334a45a8ff 780
mbed_official 19:112740acecfa 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
bogdanm 0:9b334a45a8ff 782 return(result);
bogdanm 0:9b334a45a8ff 783 }
bogdanm 0:9b334a45a8ff 784
mbed_official 19:112740acecfa 785
mbed_official 19:112740acecfa 786 /** \brief LDRT Unprivileged (8 bit)
mbed_official 19:112740acecfa 787
mbed_official 19:112740acecfa 788 This function executes a Unprivileged LDRT instruction for 8 bit value.
mbed_official 19:112740acecfa 789
mbed_official 19:112740acecfa 790 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 791 \return value of type uint8_t at (*ptr)
mbed_official 19:112740acecfa 792 */
mbed_official 19:112740acecfa 793 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDRBT(volatile uint8_t *addr)
mbed_official 19:112740acecfa 794 {
mbed_official 19:112740acecfa 795 uint32_t result;
mbed_official 19:112740acecfa 796
mbed_official 19:112740acecfa 797 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
mbed_official 19:112740acecfa 798 __ASM volatile ("ldrbt %0, %1" : "=r" (result) : "Q" (*addr) );
mbed_official 19:112740acecfa 799 #else
mbed_official 19:112740acecfa 800 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
mbed_official 19:112740acecfa 801 accepted by assembler. So has to use following less efficient pattern.
mbed_official 19:112740acecfa 802 */
mbed_official 19:112740acecfa 803 __ASM volatile ("ldrbt %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
mbed_official 19:112740acecfa 804 #endif
mbed_official 19:112740acecfa 805 return ((uint8_t) result); /* Add explicit type cast here */
mbed_official 19:112740acecfa 806 }
mbed_official 19:112740acecfa 807
mbed_official 19:112740acecfa 808
mbed_official 19:112740acecfa 809 /** \brief LDRT Unprivileged (16 bit)
mbed_official 19:112740acecfa 810
mbed_official 19:112740acecfa 811 This function executes a Unprivileged LDRT instruction for 16 bit values.
mbed_official 19:112740acecfa 812
mbed_official 19:112740acecfa 813 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 814 \return value of type uint16_t at (*ptr)
mbed_official 19:112740acecfa 815 */
mbed_official 19:112740acecfa 816 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDRHT(volatile uint16_t *addr)
mbed_official 19:112740acecfa 817 {
mbed_official 19:112740acecfa 818 uint32_t result;
mbed_official 19:112740acecfa 819
mbed_official 19:112740acecfa 820 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
mbed_official 19:112740acecfa 821 __ASM volatile ("ldrht %0, %1" : "=r" (result) : "Q" (*addr) );
mbed_official 19:112740acecfa 822 #else
mbed_official 19:112740acecfa 823 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
mbed_official 19:112740acecfa 824 accepted by assembler. So has to use following less efficient pattern.
mbed_official 19:112740acecfa 825 */
mbed_official 19:112740acecfa 826 __ASM volatile ("ldrht %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
mbed_official 19:112740acecfa 827 #endif
mbed_official 19:112740acecfa 828 return ((uint16_t) result); /* Add explicit type cast here */
mbed_official 19:112740acecfa 829 }
bogdanm 0:9b334a45a8ff 830
bogdanm 0:9b334a45a8ff 831
mbed_official 19:112740acecfa 832 /** \brief LDRT Unprivileged (32 bit)
mbed_official 19:112740acecfa 833
mbed_official 19:112740acecfa 834 This function executes a Unprivileged LDRT instruction for 32 bit values.
mbed_official 19:112740acecfa 835
mbed_official 19:112740acecfa 836 \param [in] ptr Pointer to data
mbed_official 19:112740acecfa 837 \return value of type uint32_t at (*ptr)
mbed_official 19:112740acecfa 838 */
mbed_official 19:112740acecfa 839 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDRT(volatile uint32_t *addr)
mbed_official 19:112740acecfa 840 {
mbed_official 19:112740acecfa 841 uint32_t result;
mbed_official 19:112740acecfa 842
mbed_official 19:112740acecfa 843 __ASM volatile ("ldrt %0, %1" : "=r" (result) : "Q" (*addr) );
mbed_official 19:112740acecfa 844 return(result);
mbed_official 19:112740acecfa 845 }
mbed_official 19:112740acecfa 846
mbed_official 19:112740acecfa 847
mbed_official 19:112740acecfa 848 /** \brief STRT Unprivileged (8 bit)
mbed_official 19:112740acecfa 849
mbed_official 19:112740acecfa 850 This function executes a Unprivileged STRT instruction for 8 bit values.
mbed_official 19:112740acecfa 851
mbed_official 19:112740acecfa 852 \param [in] value Value to store
mbed_official 19:112740acecfa 853 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 854 */
mbed_official 19:112740acecfa 855 __attribute__((always_inline)) __STATIC_INLINE void __STRBT(uint8_t value, volatile uint8_t *addr)
mbed_official 19:112740acecfa 856 {
mbed_official 19:112740acecfa 857 __ASM volatile ("strbt %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
mbed_official 19:112740acecfa 858 }
mbed_official 19:112740acecfa 859
mbed_official 19:112740acecfa 860
mbed_official 19:112740acecfa 861 /** \brief STRT Unprivileged (16 bit)
mbed_official 19:112740acecfa 862
mbed_official 19:112740acecfa 863 This function executes a Unprivileged STRT instruction for 16 bit values.
mbed_official 19:112740acecfa 864
mbed_official 19:112740acecfa 865 \param [in] value Value to store
mbed_official 19:112740acecfa 866 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 867 */
mbed_official 19:112740acecfa 868 __attribute__((always_inline)) __STATIC_INLINE void __STRHT(uint16_t value, volatile uint16_t *addr)
mbed_official 19:112740acecfa 869 {
mbed_official 19:112740acecfa 870 __ASM volatile ("strht %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
mbed_official 19:112740acecfa 871 }
mbed_official 19:112740acecfa 872
mbed_official 19:112740acecfa 873
mbed_official 19:112740acecfa 874 /** \brief STRT Unprivileged (32 bit)
mbed_official 19:112740acecfa 875
mbed_official 19:112740acecfa 876 This function executes a Unprivileged STRT instruction for 32 bit values.
mbed_official 19:112740acecfa 877
mbed_official 19:112740acecfa 878 \param [in] value Value to store
mbed_official 19:112740acecfa 879 \param [in] ptr Pointer to location
mbed_official 19:112740acecfa 880 */
mbed_official 19:112740acecfa 881 __attribute__((always_inline)) __STATIC_INLINE void __STRT(uint32_t value, volatile uint32_t *addr)
mbed_official 19:112740acecfa 882 {
mbed_official 19:112740acecfa 883 __ASM volatile ("strt %1, %0" : "=Q" (*addr) : "r" (value) );
mbed_official 19:112740acecfa 884 }
mbed_official 19:112740acecfa 885
mbed_official 19:112740acecfa 886 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
mbed_official 19:112740acecfa 887
mbed_official 19:112740acecfa 888
mbed_official 19:112740acecfa 889 #elif defined ( __ICCARM__ ) /*------------------ ICC Compiler -------------------*/
mbed_official 19:112740acecfa 890 /* IAR iccarm specific functions */
mbed_official 19:112740acecfa 891 #include <cmsis_iar.h>
mbed_official 19:112740acecfa 892
mbed_official 19:112740acecfa 893
mbed_official 19:112740acecfa 894 #elif defined ( __TMS470__ ) /*---------------- TI CCS Compiler ------------------*/
mbed_official 19:112740acecfa 895 /* TI CCS specific functions */
mbed_official 19:112740acecfa 896 #include <cmsis_ccs.h>
bogdanm 0:9b334a45a8ff 897
bogdanm 0:9b334a45a8ff 898
bogdanm 0:9b334a45a8ff 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
bogdanm 0:9b334a45a8ff 900 /* TASKING carm specific functions */
bogdanm 0:9b334a45a8ff 901 /*
bogdanm 0:9b334a45a8ff 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
bogdanm 0:9b334a45a8ff 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
bogdanm 0:9b334a45a8ff 904 * Including the CMSIS ones.
bogdanm 0:9b334a45a8ff 905 */
bogdanm 0:9b334a45a8ff 906
mbed_official 19:112740acecfa 907
mbed_official 19:112740acecfa 908 #elif defined ( __CSMC__ ) /*------------------ COSMIC Compiler -------------------*/
mbed_official 19:112740acecfa 909 /* Cosmic specific functions */
mbed_official 19:112740acecfa 910 #include <cmsis_csm.h>
mbed_official 19:112740acecfa 911
bogdanm 0:9b334a45a8ff 912 #endif
bogdanm 0:9b334a45a8ff 913
bogdanm 0:9b334a45a8ff 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
bogdanm 0:9b334a45a8ff 915
bogdanm 0:9b334a45a8ff 916 #endif /* __CORE_CMINSTR_H */