mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

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

TARGET_DISCO_L053C8/core_cmInstr.h@134:ad3be0349dc5, 2017-01-16 (annotated)

Committer:
<>
Date:
Mon Jan 16 12:05:23 2017 +0000
Revision:
134:ad3be0349dc5
Parent:
110:165afa46840b 
Release 134 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3488: Dev stm i2c v2 unitary functions https://github.com/ARMmbed/mbed-os/pull/3488

3492: Fix #3463 CAN read() return value https://github.com/ARMmbed/mbed-os/pull/3492

3503: [LPC15xx] Ensure that PWM=1 is resolved correctly https://github.com/ARMmbed/mbed-os/pull/3503

3504: [LPC15xx] CAN implementation improvements https://github.com/ARMmbed/mbed-os/pull/3504

3539: NUCLEO_F412ZG - Add support of TRNG peripheral https://github.com/ARMmbed/mbed-os/pull/3539

3540: STM: SPI: Initialize Rx in spi_master_write https://github.com/ARMmbed/mbed-os/pull/3540

3438: K64F: Add support for SERIAL ASYNCH API https://github.com/ARMmbed/mbed-os/pull/3438

3519: MCUXpresso: Fix ENET driver to enable interrupts after interrupt handler is set https://github.com/ARMmbed/mbed-os/pull/3519

3544: STM32L4 deepsleep improvement https://github.com/ARMmbed/mbed-os/pull/3544

3546: NUCLEO-F412ZG - Add CAN peripheral https://github.com/ARMmbed/mbed-os/pull/3546

3551: Fix I2C driver for RZ/A1H https://github.com/ARMmbed/mbed-os/pull/3551

3558: K64F UART Asynch API: Fix synchronization issue https://github.com/ARMmbed/mbed-os/pull/3558

3563: LPC4088 - Fix vector checksum https://github.com/ARMmbed/mbed-os/pull/3563

3567: Dev stm32 F0 v1.7.0 https://github.com/ARMmbed/mbed-os/pull/3567

3577: Fixes linking errors when building with debug profile https://github.com/ARMmbed/mbed-os/pull/3577

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 99:dbbf35b96557 1 /**************************************************************************//**
Kojto 99:dbbf35b96557 2 * @file core_cmInstr.h
Kojto 99:dbbf35b96557 3 * @brief CMSIS Cortex-M Core Instruction Access Header File
Kojto 110:165afa46840b 4 * @version V4.10
Kojto 110:165afa46840b 5 * @date 18. March 2015
Kojto 99:dbbf35b96557 6 *
Kojto 99:dbbf35b96557 7 * @note
Kojto 99:dbbf35b96557 8 *
Kojto 99:dbbf35b96557 9 ******************************************************************************/
Kojto 110:165afa46840b 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
Kojto 99:dbbf35b96557 11
Kojto 99:dbbf35b96557 12 All rights reserved.
Kojto 99:dbbf35b96557 13 Redistribution and use in source and binary forms, with or without
Kojto 99:dbbf35b96557 14 modification, are permitted provided that the following conditions are met:
Kojto 99:dbbf35b96557 15 - Redistributions of source code must retain the above copyright
Kojto 99:dbbf35b96557 16 notice, this list of conditions and the following disclaimer.
Kojto 99:dbbf35b96557 17 - Redistributions in binary form must reproduce the above copyright
Kojto 99:dbbf35b96557 18 notice, this list of conditions and the following disclaimer in the
Kojto 99:dbbf35b96557 19 documentation and/or other materials provided with the distribution.
Kojto 99:dbbf35b96557 20 - Neither the name of ARM nor the names of its contributors may be used
Kojto 99:dbbf35b96557 21 to endorse or promote products derived from this software without
Kojto 99:dbbf35b96557 22 specific prior written permission.
Kojto 99:dbbf35b96557 23 *
Kojto 99:dbbf35b96557 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Kojto 99:dbbf35b96557 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Kojto 99:dbbf35b96557 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Kojto 99:dbbf35b96557 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Kojto 99:dbbf35b96557 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Kojto 99:dbbf35b96557 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Kojto 99:dbbf35b96557 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Kojto 99:dbbf35b96557 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Kojto 99:dbbf35b96557 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Kojto 99:dbbf35b96557 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Kojto 99:dbbf35b96557 34 POSSIBILITY OF SUCH DAMAGE.
Kojto 99:dbbf35b96557 35 ---------------------------------------------------------------------------*/
Kojto 99:dbbf35b96557 36
Kojto 99:dbbf35b96557 37
Kojto 99:dbbf35b96557 38 #ifndef __CORE_CMINSTR_H
Kojto 99:dbbf35b96557 39 #define __CORE_CMINSTR_H
Kojto 99:dbbf35b96557 40
Kojto 99:dbbf35b96557 41
Kojto 99:dbbf35b96557 42 /* ########################## Core Instruction Access ######################### */
Kojto 99:dbbf35b96557 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Kojto 99:dbbf35b96557 44 Access to dedicated instructions
Kojto 99:dbbf35b96557 45 @{
Kojto 99:dbbf35b96557 46 */
Kojto 99:dbbf35b96557 47
Kojto 99:dbbf35b96557 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
Kojto 99:dbbf35b96557 49 /* ARM armcc specific functions */
Kojto 99:dbbf35b96557 50
Kojto 99:dbbf35b96557 51 #if (__ARMCC_VERSION < 400677)
Kojto 99:dbbf35b96557 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
Kojto 99:dbbf35b96557 53 #endif
Kojto 99:dbbf35b96557 54
Kojto 99:dbbf35b96557 55
Kojto 99:dbbf35b96557 56 /** \brief No Operation
Kojto 99:dbbf35b96557 57
Kojto 99:dbbf35b96557 58 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 99:dbbf35b96557 59 */
Kojto 99:dbbf35b96557 60 #define __NOP __nop
Kojto 99:dbbf35b96557 61
Kojto 99:dbbf35b96557 62
Kojto 99:dbbf35b96557 63 /** \brief Wait For Interrupt
Kojto 99:dbbf35b96557 64
Kojto 99:dbbf35b96557 65 Wait For Interrupt is a hint instruction that suspends execution
Kojto 99:dbbf35b96557 66 until one of a number of events occurs.
Kojto 99:dbbf35b96557 67 */
Kojto 99:dbbf35b96557 68 #define __WFI __wfi
Kojto 99:dbbf35b96557 69
Kojto 99:dbbf35b96557 70
Kojto 99:dbbf35b96557 71 /** \brief Wait For Event
Kojto 99:dbbf35b96557 72
Kojto 99:dbbf35b96557 73 Wait For Event is a hint instruction that permits the processor to enter
Kojto 99:dbbf35b96557 74 a low-power state until one of a number of events occurs.
Kojto 99:dbbf35b96557 75 */
Kojto 99:dbbf35b96557 76 #define __WFE __wfe
Kojto 99:dbbf35b96557 77
Kojto 99:dbbf35b96557 78
Kojto 99:dbbf35b96557 79 /** \brief Send Event
Kojto 99:dbbf35b96557 80
Kojto 99:dbbf35b96557 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 99:dbbf35b96557 82 */
Kojto 99:dbbf35b96557 83 #define __SEV __sev
Kojto 99:dbbf35b96557 84
Kojto 99:dbbf35b96557 85
Kojto 99:dbbf35b96557 86 /** \brief Instruction Synchronization Barrier
Kojto 99:dbbf35b96557 87
Kojto 99:dbbf35b96557 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 99:dbbf35b96557 89 so that all instructions following the ISB are fetched from cache or
Kojto 99:dbbf35b96557 90 memory, after the instruction has been completed.
Kojto 99:dbbf35b96557 91 */
Kojto 110:165afa46840b 92 #define __ISB() do {\
Kojto 110:165afa46840b 93 __schedule_barrier();\
Kojto 110:165afa46840b 94 __isb(0xF);\
Kojto 110:165afa46840b 95 __schedule_barrier();\
Kojto 110:165afa46840b 96 } while (0)
Kojto 99:dbbf35b96557 97
Kojto 99:dbbf35b96557 98 /** \brief Data Synchronization Barrier
Kojto 99:dbbf35b96557 99
Kojto 99:dbbf35b96557 100 This function acts as a special kind of Data Memory Barrier.
Kojto 99:dbbf35b96557 101 It completes when all explicit memory accesses before this instruction complete.
Kojto 99:dbbf35b96557 102 */
Kojto 110:165afa46840b 103 #define __DSB() do {\
Kojto 110:165afa46840b 104 __schedule_barrier();\
Kojto 110:165afa46840b 105 __dsb(0xF);\
Kojto 110:165afa46840b 106 __schedule_barrier();\
Kojto 110:165afa46840b 107 } while (0)
Kojto 99:dbbf35b96557 108
Kojto 99:dbbf35b96557 109 /** \brief Data Memory Barrier
Kojto 99:dbbf35b96557 110
Kojto 99:dbbf35b96557 111 This function ensures the apparent order of the explicit memory operations before
Kojto 99:dbbf35b96557 112 and after the instruction, without ensuring their completion.
Kojto 99:dbbf35b96557 113 */
Kojto 110:165afa46840b 114 #define __DMB() do {\
Kojto 110:165afa46840b 115 __schedule_barrier();\
Kojto 110:165afa46840b 116 __dmb(0xF);\
Kojto 110:165afa46840b 117 __schedule_barrier();\
Kojto 110:165afa46840b 118 } while (0)
Kojto 99:dbbf35b96557 119
Kojto 99:dbbf35b96557 120 /** \brief Reverse byte order (32 bit)
Kojto 99:dbbf35b96557 121
Kojto 99:dbbf35b96557 122 This function reverses the byte order in integer value.
Kojto 99:dbbf35b96557 123
Kojto 99:dbbf35b96557 124 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 125 \return Reversed value
Kojto 99:dbbf35b96557 126 */
Kojto 99:dbbf35b96557 127 #define __REV __rev
Kojto 99:dbbf35b96557 128
Kojto 99:dbbf35b96557 129
Kojto 99:dbbf35b96557 130 /** \brief Reverse byte order (16 bit)
Kojto 99:dbbf35b96557 131
Kojto 99:dbbf35b96557 132 This function reverses the byte order in two unsigned short values.
Kojto 99:dbbf35b96557 133
Kojto 99:dbbf35b96557 134 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 135 \return Reversed value
Kojto 99:dbbf35b96557 136 */
Kojto 99:dbbf35b96557 137 #ifndef __NO_EMBEDDED_ASM
Kojto 99:dbbf35b96557 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
Kojto 99:dbbf35b96557 139 {
Kojto 99:dbbf35b96557 140 rev16 r0, r0
Kojto 99:dbbf35b96557 141 bx lr
Kojto 99:dbbf35b96557 142 }
Kojto 99:dbbf35b96557 143 #endif
Kojto 99:dbbf35b96557 144
Kojto 99:dbbf35b96557 145 /** \brief Reverse byte order in signed short value
Kojto 99:dbbf35b96557 146
Kojto 99:dbbf35b96557 147 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 99:dbbf35b96557 148
Kojto 99:dbbf35b96557 149 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 150 \return Reversed value
Kojto 99:dbbf35b96557 151 */
Kojto 99:dbbf35b96557 152 #ifndef __NO_EMBEDDED_ASM
Kojto 99:dbbf35b96557 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
Kojto 99:dbbf35b96557 154 {
Kojto 99:dbbf35b96557 155 revsh r0, r0
Kojto 99:dbbf35b96557 156 bx lr
Kojto 99:dbbf35b96557 157 }
Kojto 99:dbbf35b96557 158 #endif
Kojto 99:dbbf35b96557 159
Kojto 99:dbbf35b96557 160
Kojto 99:dbbf35b96557 161 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 99:dbbf35b96557 162
Kojto 99:dbbf35b96557 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 99:dbbf35b96557 164
Kojto 99:dbbf35b96557 165 \param [in] value Value to rotate
Kojto 99:dbbf35b96557 166 \param [in] value Number of Bits to rotate
Kojto 99:dbbf35b96557 167 \return Rotated value
Kojto 99:dbbf35b96557 168 */
Kojto 99:dbbf35b96557 169 #define __ROR __ror
Kojto 99:dbbf35b96557 170
Kojto 99:dbbf35b96557 171
Kojto 99:dbbf35b96557 172 /** \brief Breakpoint
Kojto 99:dbbf35b96557 173
Kojto 99:dbbf35b96557 174 This function causes the processor to enter Debug state.
Kojto 99:dbbf35b96557 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 99:dbbf35b96557 176
Kojto 99:dbbf35b96557 177 \param [in] value is ignored by the processor.
Kojto 99:dbbf35b96557 178 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 99:dbbf35b96557 179 */
Kojto 99:dbbf35b96557 180 #define __BKPT(value) __breakpoint(value)
Kojto 99:dbbf35b96557 181
Kojto 99:dbbf35b96557 182
Kojto 99:dbbf35b96557 183 /** \brief Reverse bit order of value
Kojto 99:dbbf35b96557 184
Kojto 99:dbbf35b96557 185 This function reverses the bit order of the given value.
Kojto 99:dbbf35b96557 186
Kojto 99:dbbf35b96557 187 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 188 \return Reversed value
Kojto 99:dbbf35b96557 189 */
Kojto 110:165afa46840b 190 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 110:165afa46840b 191 #define __RBIT __rbit
Kojto 110:165afa46840b 192 #else
Kojto 110:165afa46840b 193 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 110:165afa46840b 194 {
Kojto 110:165afa46840b 195 uint32_t result;
Kojto 110:165afa46840b 196 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
Kojto 99:dbbf35b96557 197
Kojto 110:165afa46840b 198 result = value; // r will be reversed bits of v; first get LSB of v
Kojto 110:165afa46840b 199 for (value >>= 1; value; value >>= 1)
Kojto 110:165afa46840b 200 {
Kojto 110:165afa46840b 201 result <<= 1;
Kojto 110:165afa46840b 202 result |= value & 1;
Kojto 110:165afa46840b 203 s--;
Kojto 110:165afa46840b 204 }
Kojto 110:165afa46840b 205 result <<= s; // shift when v's highest bits are zero
Kojto 110:165afa46840b 206 return(result);
Kojto 110:165afa46840b 207 }
Kojto 110:165afa46840b 208 #endif
Kojto 110:165afa46840b 209
Kojto 110:165afa46840b 210
Kojto 110:165afa46840b 211 /** \brief Count leading zeros
Kojto 110:165afa46840b 212
Kojto 110:165afa46840b 213 This function counts the number of leading zeros of a data value.
Kojto 110:165afa46840b 214
Kojto 110:165afa46840b 215 \param [in] value Value to count the leading zeros
Kojto 110:165afa46840b 216 \return number of leading zeros in value
Kojto 110:165afa46840b 217 */
Kojto 110:165afa46840b 218 #define __CLZ __clz
Kojto 110:165afa46840b 219
Kojto 110:165afa46840b 220
Kojto 110:165afa46840b 221 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 99:dbbf35b96557 222
Kojto 99:dbbf35b96557 223 /** \brief LDR Exclusive (8 bit)
Kojto 99:dbbf35b96557 224
Kojto 110:165afa46840b 225 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 99:dbbf35b96557 226
Kojto 99:dbbf35b96557 227 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 228 \return value of type uint8_t at (*ptr)
Kojto 99:dbbf35b96557 229 */
Kojto 99:dbbf35b96557 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
Kojto 99:dbbf35b96557 231
Kojto 99:dbbf35b96557 232
Kojto 99:dbbf35b96557 233 /** \brief LDR Exclusive (16 bit)
Kojto 99:dbbf35b96557 234
Kojto 110:165afa46840b 235 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 99:dbbf35b96557 236
Kojto 99:dbbf35b96557 237 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 238 \return value of type uint16_t at (*ptr)
Kojto 99:dbbf35b96557 239 */
Kojto 99:dbbf35b96557 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
Kojto 99:dbbf35b96557 241
Kojto 99:dbbf35b96557 242
Kojto 99:dbbf35b96557 243 /** \brief LDR Exclusive (32 bit)
Kojto 99:dbbf35b96557 244
Kojto 110:165afa46840b 245 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 99:dbbf35b96557 246
Kojto 99:dbbf35b96557 247 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 248 \return value of type uint32_t at (*ptr)
Kojto 99:dbbf35b96557 249 */
Kojto 99:dbbf35b96557 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
Kojto 99:dbbf35b96557 251
Kojto 99:dbbf35b96557 252
Kojto 99:dbbf35b96557 253 /** \brief STR Exclusive (8 bit)
Kojto 99:dbbf35b96557 254
Kojto 110:165afa46840b 255 This function executes a exclusive STR instruction for 8 bit values.
Kojto 99:dbbf35b96557 256
Kojto 99:dbbf35b96557 257 \param [in] value Value to store
Kojto 99:dbbf35b96557 258 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 259 \return 0 Function succeeded
Kojto 99:dbbf35b96557 260 \return 1 Function failed
Kojto 99:dbbf35b96557 261 */
Kojto 99:dbbf35b96557 262 #define __STREXB(value, ptr) __strex(value, ptr)
Kojto 99:dbbf35b96557 263
Kojto 99:dbbf35b96557 264
Kojto 99:dbbf35b96557 265 /** \brief STR Exclusive (16 bit)
Kojto 99:dbbf35b96557 266
Kojto 110:165afa46840b 267 This function executes a exclusive STR instruction for 16 bit values.
Kojto 99:dbbf35b96557 268
Kojto 99:dbbf35b96557 269 \param [in] value Value to store
Kojto 99:dbbf35b96557 270 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 271 \return 0 Function succeeded
Kojto 99:dbbf35b96557 272 \return 1 Function failed
Kojto 99:dbbf35b96557 273 */
Kojto 99:dbbf35b96557 274 #define __STREXH(value, ptr) __strex(value, ptr)
Kojto 99:dbbf35b96557 275
Kojto 99:dbbf35b96557 276
Kojto 99:dbbf35b96557 277 /** \brief STR Exclusive (32 bit)
Kojto 99:dbbf35b96557 278
Kojto 110:165afa46840b 279 This function executes a exclusive STR instruction for 32 bit values.
Kojto 99:dbbf35b96557 280
Kojto 99:dbbf35b96557 281 \param [in] value Value to store
Kojto 99:dbbf35b96557 282 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 283 \return 0 Function succeeded
Kojto 99:dbbf35b96557 284 \return 1 Function failed
Kojto 99:dbbf35b96557 285 */
Kojto 99:dbbf35b96557 286 #define __STREXW(value, ptr) __strex(value, ptr)
Kojto 99:dbbf35b96557 287
Kojto 99:dbbf35b96557 288
Kojto 99:dbbf35b96557 289 /** \brief Remove the exclusive lock
Kojto 99:dbbf35b96557 290
Kojto 99:dbbf35b96557 291 This function removes the exclusive lock which is created by LDREX.
Kojto 99:dbbf35b96557 292
Kojto 99:dbbf35b96557 293 */
Kojto 99:dbbf35b96557 294 #define __CLREX __clrex
Kojto 99:dbbf35b96557 295
Kojto 99:dbbf35b96557 296
Kojto 99:dbbf35b96557 297 /** \brief Signed Saturate
Kojto 99:dbbf35b96557 298
Kojto 99:dbbf35b96557 299 This function saturates a signed value.
Kojto 99:dbbf35b96557 300
Kojto 99:dbbf35b96557 301 \param [in] value Value to be saturated
Kojto 99:dbbf35b96557 302 \param [in] sat Bit position to saturate to (1..32)
Kojto 99:dbbf35b96557 303 \return Saturated value
Kojto 99:dbbf35b96557 304 */
Kojto 99:dbbf35b96557 305 #define __SSAT __ssat
Kojto 99:dbbf35b96557 306
Kojto 99:dbbf35b96557 307
Kojto 99:dbbf35b96557 308 /** \brief Unsigned Saturate
Kojto 99:dbbf35b96557 309
Kojto 99:dbbf35b96557 310 This function saturates an unsigned value.
Kojto 99:dbbf35b96557 311
Kojto 99:dbbf35b96557 312 \param [in] value Value to be saturated
Kojto 99:dbbf35b96557 313 \param [in] sat Bit position to saturate to (0..31)
Kojto 99:dbbf35b96557 314 \return Saturated value
Kojto 99:dbbf35b96557 315 */
Kojto 99:dbbf35b96557 316 #define __USAT __usat
Kojto 99:dbbf35b96557 317
Kojto 99:dbbf35b96557 318
Kojto 110:165afa46840b 319 /** \brief Rotate Right with Extend (32 bit)
Kojto 110:165afa46840b 320
Kojto 110:165afa46840b 321 This function moves each bit of a bitstring right by one bit.
Kojto 110:165afa46840b 322 The carry input is shifted in at the left end of the bitstring.
Kojto 99:dbbf35b96557 323
Kojto 110:165afa46840b 324 \param [in] value Value to rotate
Kojto 110:165afa46840b 325 \return Rotated value
Kojto 110:165afa46840b 326 */
Kojto 110:165afa46840b 327 #ifndef __NO_EMBEDDED_ASM
Kojto 110:165afa46840b 328 __attribute__((section(".rrx_text"))) __STATIC_INLINE __ASM uint32_t __RRX(uint32_t value)
Kojto 110:165afa46840b 329 {
Kojto 110:165afa46840b 330 rrx r0, r0
Kojto 110:165afa46840b 331 bx lr
Kojto 110:165afa46840b 332 }
Kojto 110:165afa46840b 333 #endif
Kojto 110:165afa46840b 334
Kojto 99:dbbf35b96557 335
Kojto 110:165afa46840b 336 /** \brief LDRT Unprivileged (8 bit)
Kojto 110:165afa46840b 337
Kojto 110:165afa46840b 338 This function executes a Unprivileged LDRT instruction for 8 bit value.
Kojto 110:165afa46840b 339
Kojto 110:165afa46840b 340 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 341 \return value of type uint8_t at (*ptr)
Kojto 99:dbbf35b96557 342 */
Kojto 110:165afa46840b 343 #define __LDRBT(ptr) ((uint8_t ) __ldrt(ptr))
Kojto 110:165afa46840b 344
Kojto 110:165afa46840b 345
Kojto 110:165afa46840b 346 /** \brief LDRT Unprivileged (16 bit)
Kojto 99:dbbf35b96557 347
Kojto 110:165afa46840b 348 This function executes a Unprivileged LDRT instruction for 16 bit values.
Kojto 110:165afa46840b 349
Kojto 110:165afa46840b 350 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 351 \return value of type uint16_t at (*ptr)
Kojto 110:165afa46840b 352 */
Kojto 110:165afa46840b 353 #define __LDRHT(ptr) ((uint16_t) __ldrt(ptr))
Kojto 99:dbbf35b96557 354
Kojto 99:dbbf35b96557 355
Kojto 110:165afa46840b 356 /** \brief LDRT Unprivileged (32 bit)
Kojto 99:dbbf35b96557 357
Kojto 110:165afa46840b 358 This function executes a Unprivileged LDRT instruction for 32 bit values.
Kojto 110:165afa46840b 359
Kojto 110:165afa46840b 360 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 361 \return value of type uint32_t at (*ptr)
Kojto 110:165afa46840b 362 */
Kojto 110:165afa46840b 363 #define __LDRT(ptr) ((uint32_t ) __ldrt(ptr))
Kojto 110:165afa46840b 364
Kojto 99:dbbf35b96557 365
Kojto 110:165afa46840b 366 /** \brief STRT Unprivileged (8 bit)
Kojto 110:165afa46840b 367
Kojto 110:165afa46840b 368 This function executes a Unprivileged STRT instruction for 8 bit values.
Kojto 110:165afa46840b 369
Kojto 110:165afa46840b 370 \param [in] value Value to store
Kojto 110:165afa46840b 371 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 372 */
Kojto 110:165afa46840b 373 #define __STRBT(value, ptr) __strt(value, ptr)
Kojto 99:dbbf35b96557 374
Kojto 99:dbbf35b96557 375
Kojto 110:165afa46840b 376 /** \brief STRT Unprivileged (16 bit)
Kojto 110:165afa46840b 377
Kojto 110:165afa46840b 378 This function executes a Unprivileged STRT instruction for 16 bit values.
Kojto 110:165afa46840b 379
Kojto 110:165afa46840b 380 \param [in] value Value to store
Kojto 110:165afa46840b 381 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 382 */
Kojto 110:165afa46840b 383 #define __STRHT(value, ptr) __strt(value, ptr)
Kojto 110:165afa46840b 384
Kojto 99:dbbf35b96557 385
Kojto 110:165afa46840b 386 /** \brief STRT Unprivileged (32 bit)
Kojto 110:165afa46840b 387
Kojto 110:165afa46840b 388 This function executes a Unprivileged STRT instruction for 32 bit values.
Kojto 110:165afa46840b 389
Kojto 110:165afa46840b 390 \param [in] value Value to store
Kojto 110:165afa46840b 391 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 392 */
Kojto 110:165afa46840b 393 #define __STRT(value, ptr) __strt(value, ptr)
Kojto 110:165afa46840b 394
Kojto 110:165afa46840b 395 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
Kojto 99:dbbf35b96557 396
Kojto 99:dbbf35b96557 397
Kojto 99:dbbf35b96557 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
Kojto 99:dbbf35b96557 399 /* GNU gcc specific functions */
Kojto 99:dbbf35b96557 400
Kojto 99:dbbf35b96557 401 /* Define macros for porting to both thumb1 and thumb2.
Kojto 99:dbbf35b96557 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
Kojto 99:dbbf35b96557 403 * Otherwise, use general registers, specified by constrant "r" */
Kojto 99:dbbf35b96557 404 #if defined (__thumb__) && !defined (__thumb2__)
Kojto 99:dbbf35b96557 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
Kojto 99:dbbf35b96557 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
Kojto 99:dbbf35b96557 407 #else
Kojto 99:dbbf35b96557 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
Kojto 99:dbbf35b96557 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
Kojto 99:dbbf35b96557 410 #endif
Kojto 99:dbbf35b96557 411
Kojto 99:dbbf35b96557 412 /** \brief No Operation
Kojto 99:dbbf35b96557 413
Kojto 99:dbbf35b96557 414 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 99:dbbf35b96557 415 */
Kojto 110:165afa46840b 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
Kojto 99:dbbf35b96557 417 {
Kojto 99:dbbf35b96557 418 __ASM volatile ("nop");
Kojto 99:dbbf35b96557 419 }
Kojto 99:dbbf35b96557 420
Kojto 99:dbbf35b96557 421
Kojto 99:dbbf35b96557 422 /** \brief Wait For Interrupt
Kojto 99:dbbf35b96557 423
Kojto 99:dbbf35b96557 424 Wait For Interrupt is a hint instruction that suspends execution
Kojto 99:dbbf35b96557 425 until one of a number of events occurs.
Kojto 99:dbbf35b96557 426 */
Kojto 110:165afa46840b 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
Kojto 99:dbbf35b96557 428 {
Kojto 99:dbbf35b96557 429 __ASM volatile ("wfi");
Kojto 99:dbbf35b96557 430 }
Kojto 99:dbbf35b96557 431
Kojto 99:dbbf35b96557 432
Kojto 99:dbbf35b96557 433 /** \brief Wait For Event
Kojto 99:dbbf35b96557 434
Kojto 99:dbbf35b96557 435 Wait For Event is a hint instruction that permits the processor to enter
Kojto 99:dbbf35b96557 436 a low-power state until one of a number of events occurs.
Kojto 99:dbbf35b96557 437 */
Kojto 110:165afa46840b 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
Kojto 99:dbbf35b96557 439 {
Kojto 99:dbbf35b96557 440 __ASM volatile ("wfe");
Kojto 99:dbbf35b96557 441 }
Kojto 99:dbbf35b96557 442
Kojto 99:dbbf35b96557 443
Kojto 99:dbbf35b96557 444 /** \brief Send Event
Kojto 99:dbbf35b96557 445
Kojto 99:dbbf35b96557 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 99:dbbf35b96557 447 */
Kojto 110:165afa46840b 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
Kojto 99:dbbf35b96557 449 {
Kojto 99:dbbf35b96557 450 __ASM volatile ("sev");
Kojto 99:dbbf35b96557 451 }
Kojto 99:dbbf35b96557 452
Kojto 99:dbbf35b96557 453
Kojto 99:dbbf35b96557 454 /** \brief Instruction Synchronization Barrier
Kojto 99:dbbf35b96557 455
Kojto 99:dbbf35b96557 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 99:dbbf35b96557 457 so that all instructions following the ISB are fetched from cache or
Kojto 99:dbbf35b96557 458 memory, after the instruction has been completed.
Kojto 99:dbbf35b96557 459 */
Kojto 110:165afa46840b 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
Kojto 99:dbbf35b96557 461 {
Kojto 110:165afa46840b 462 __ASM volatile ("isb 0xF":::"memory");
Kojto 99:dbbf35b96557 463 }
Kojto 99:dbbf35b96557 464
Kojto 99:dbbf35b96557 465
Kojto 99:dbbf35b96557 466 /** \brief Data Synchronization Barrier
Kojto 99:dbbf35b96557 467
Kojto 99:dbbf35b96557 468 This function acts as a special kind of Data Memory Barrier.
Kojto 99:dbbf35b96557 469 It completes when all explicit memory accesses before this instruction complete.
Kojto 99:dbbf35b96557 470 */
Kojto 110:165afa46840b 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
Kojto 99:dbbf35b96557 472 {
Kojto 110:165afa46840b 473 __ASM volatile ("dsb 0xF":::"memory");
Kojto 99:dbbf35b96557 474 }
Kojto 99:dbbf35b96557 475
Kojto 99:dbbf35b96557 476
Kojto 99:dbbf35b96557 477 /** \brief Data Memory Barrier
Kojto 99:dbbf35b96557 478
Kojto 99:dbbf35b96557 479 This function ensures the apparent order of the explicit memory operations before
Kojto 99:dbbf35b96557 480 and after the instruction, without ensuring their completion.
Kojto 99:dbbf35b96557 481 */
Kojto 110:165afa46840b 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
Kojto 99:dbbf35b96557 483 {
Kojto 110:165afa46840b 484 __ASM volatile ("dmb 0xF":::"memory");
Kojto 99:dbbf35b96557 485 }
Kojto 99:dbbf35b96557 486
Kojto 99:dbbf35b96557 487
Kojto 99:dbbf35b96557 488 /** \brief Reverse byte order (32 bit)
Kojto 99:dbbf35b96557 489
Kojto 99:dbbf35b96557 490 This function reverses the byte order in integer value.
Kojto 99:dbbf35b96557 491
Kojto 99:dbbf35b96557 492 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 493 \return Reversed value
Kojto 99:dbbf35b96557 494 */
Kojto 110:165afa46840b 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
Kojto 99:dbbf35b96557 496 {
Kojto 99:dbbf35b96557 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
Kojto 99:dbbf35b96557 498 return __builtin_bswap32(value);
Kojto 99:dbbf35b96557 499 #else
Kojto 99:dbbf35b96557 500 uint32_t result;
Kojto 99:dbbf35b96557 501
Kojto 99:dbbf35b96557 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 99:dbbf35b96557 503 return(result);
Kojto 99:dbbf35b96557 504 #endif
Kojto 99:dbbf35b96557 505 }
Kojto 99:dbbf35b96557 506
Kojto 99:dbbf35b96557 507
Kojto 99:dbbf35b96557 508 /** \brief Reverse byte order (16 bit)
Kojto 99:dbbf35b96557 509
Kojto 99:dbbf35b96557 510 This function reverses the byte order in two unsigned short values.
Kojto 99:dbbf35b96557 511
Kojto 99:dbbf35b96557 512 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 513 \return Reversed value
Kojto 99:dbbf35b96557 514 */
Kojto 110:165afa46840b 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
Kojto 99:dbbf35b96557 516 {
Kojto 99:dbbf35b96557 517 uint32_t result;
Kojto 99:dbbf35b96557 518
Kojto 99:dbbf35b96557 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 99:dbbf35b96557 520 return(result);
Kojto 99:dbbf35b96557 521 }
Kojto 99:dbbf35b96557 522
Kojto 99:dbbf35b96557 523
Kojto 99:dbbf35b96557 524 /** \brief Reverse byte order in signed short value
Kojto 99:dbbf35b96557 525
Kojto 99:dbbf35b96557 526 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 99:dbbf35b96557 527
Kojto 99:dbbf35b96557 528 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 529 \return Reversed value
Kojto 99:dbbf35b96557 530 */
Kojto 110:165afa46840b 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
Kojto 99:dbbf35b96557 532 {
Kojto 99:dbbf35b96557 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 99:dbbf35b96557 534 return (short)__builtin_bswap16(value);
Kojto 99:dbbf35b96557 535 #else
Kojto 99:dbbf35b96557 536 uint32_t result;
Kojto 99:dbbf35b96557 537
Kojto 99:dbbf35b96557 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 99:dbbf35b96557 539 return(result);
Kojto 99:dbbf35b96557 540 #endif
Kojto 99:dbbf35b96557 541 }
Kojto 99:dbbf35b96557 542
Kojto 99:dbbf35b96557 543
Kojto 99:dbbf35b96557 544 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 99:dbbf35b96557 545
Kojto 99:dbbf35b96557 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 99:dbbf35b96557 547
Kojto 99:dbbf35b96557 548 \param [in] value Value to rotate
Kojto 99:dbbf35b96557 549 \param [in] value Number of Bits to rotate
Kojto 99:dbbf35b96557 550 \return Rotated value
Kojto 99:dbbf35b96557 551 */
Kojto 110:165afa46840b 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
Kojto 99:dbbf35b96557 553 {
Kojto 110:165afa46840b 554 return (op1 >> op2) | (op1 << (32 - op2));
Kojto 99:dbbf35b96557 555 }
Kojto 99:dbbf35b96557 556
Kojto 99:dbbf35b96557 557
Kojto 99:dbbf35b96557 558 /** \brief Breakpoint
Kojto 99:dbbf35b96557 559
Kojto 99:dbbf35b96557 560 This function causes the processor to enter Debug state.
Kojto 99:dbbf35b96557 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 99:dbbf35b96557 562
Kojto 99:dbbf35b96557 563 \param [in] value is ignored by the processor.
Kojto 99:dbbf35b96557 564 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 99:dbbf35b96557 565 */
Kojto 99:dbbf35b96557 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
Kojto 99:dbbf35b96557 567
Kojto 99:dbbf35b96557 568
Kojto 99:dbbf35b96557 569 /** \brief Reverse bit order of value
Kojto 99:dbbf35b96557 570
Kojto 99:dbbf35b96557 571 This function reverses the bit order of the given value.
Kojto 99:dbbf35b96557 572
Kojto 99:dbbf35b96557 573 \param [in] value Value to reverse
Kojto 99:dbbf35b96557 574 \return Reversed value
Kojto 99:dbbf35b96557 575 */
Kojto 110:165afa46840b 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 99:dbbf35b96557 577 {
Kojto 99:dbbf35b96557 578 uint32_t result;
Kojto 99:dbbf35b96557 579
Kojto 110:165afa46840b 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 99:dbbf35b96557 581 __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) );
Kojto 110:165afa46840b 582 #else
Kojto 110:165afa46840b 583 int32_t s = 4 /*sizeof(v)*/ * 8 - 1; // extra shift needed at end
Kojto 110:165afa46840b 584
Kojto 110:165afa46840b 585 result = value; // r will be reversed bits of v; first get LSB of v
Kojto 110:165afa46840b 586 for (value >>= 1; value; value >>= 1)
Kojto 110:165afa46840b 587 {
Kojto 110:165afa46840b 588 result <<= 1;
Kojto 110:165afa46840b 589 result |= value & 1;
Kojto 110:165afa46840b 590 s--;
Kojto 110:165afa46840b 591 }
Kojto 110:165afa46840b 592 result <<= s; // shift when v's highest bits are zero
Kojto 110:165afa46840b 593 #endif
Kojto 110:165afa46840b 594 return(result);
Kojto 99:dbbf35b96557 595 }
Kojto 99:dbbf35b96557 596
Kojto 99:dbbf35b96557 597
Kojto 110:165afa46840b 598 /** \brief Count leading zeros
Kojto 110:165afa46840b 599
Kojto 110:165afa46840b 600 This function counts the number of leading zeros of a data value.
Kojto 110:165afa46840b 601
Kojto 110:165afa46840b 602 \param [in] value Value to count the leading zeros
Kojto 110:165afa46840b 603 \return number of leading zeros in value
Kojto 110:165afa46840b 604 */
Kojto 110:165afa46840b 605 #define __CLZ __builtin_clz
Kojto 110:165afa46840b 606
Kojto 110:165afa46840b 607
Kojto 110:165afa46840b 608 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 110:165afa46840b 609
Kojto 99:dbbf35b96557 610 /** \brief LDR Exclusive (8 bit)
Kojto 99:dbbf35b96557 611
Kojto 110:165afa46840b 612 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 99:dbbf35b96557 613
Kojto 99:dbbf35b96557 614 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 615 \return value of type uint8_t at (*ptr)
Kojto 99:dbbf35b96557 616 */
Kojto 110:165afa46840b 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
Kojto 99:dbbf35b96557 618 {
Kojto 99:dbbf35b96557 619 uint32_t result;
Kojto 99:dbbf35b96557 620
Kojto 99:dbbf35b96557 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 99:dbbf35b96557 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 99:dbbf35b96557 623 #else
Kojto 99:dbbf35b96557 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 99:dbbf35b96557 625 accepted by assembler. So has to use following less efficient pattern.
Kojto 99:dbbf35b96557 626 */
Kojto 99:dbbf35b96557 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 99:dbbf35b96557 628 #endif
Kojto 110:165afa46840b 629 return ((uint8_t) result); /* Add explicit type cast here */
Kojto 99:dbbf35b96557 630 }
Kojto 99:dbbf35b96557 631
Kojto 99:dbbf35b96557 632
Kojto 99:dbbf35b96557 633 /** \brief LDR Exclusive (16 bit)
Kojto 99:dbbf35b96557 634
Kojto 110:165afa46840b 635 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 99:dbbf35b96557 636
Kojto 99:dbbf35b96557 637 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 638 \return value of type uint16_t at (*ptr)
Kojto 99:dbbf35b96557 639 */
Kojto 110:165afa46840b 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
Kojto 99:dbbf35b96557 641 {
Kojto 99:dbbf35b96557 642 uint32_t result;
Kojto 99:dbbf35b96557 643
Kojto 99:dbbf35b96557 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 99:dbbf35b96557 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 99:dbbf35b96557 646 #else
Kojto 99:dbbf35b96557 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 99:dbbf35b96557 648 accepted by assembler. So has to use following less efficient pattern.
Kojto 99:dbbf35b96557 649 */
Kojto 99:dbbf35b96557 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 99:dbbf35b96557 651 #endif
Kojto 110:165afa46840b 652 return ((uint16_t) result); /* Add explicit type cast here */
Kojto 99:dbbf35b96557 653 }
Kojto 99:dbbf35b96557 654
Kojto 99:dbbf35b96557 655
Kojto 99:dbbf35b96557 656 /** \brief LDR Exclusive (32 bit)
Kojto 99:dbbf35b96557 657
Kojto 110:165afa46840b 658 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 99:dbbf35b96557 659
Kojto 99:dbbf35b96557 660 \param [in] ptr Pointer to data
Kojto 99:dbbf35b96557 661 \return value of type uint32_t at (*ptr)
Kojto 99:dbbf35b96557 662 */
Kojto 110:165afa46840b 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
Kojto 99:dbbf35b96557 664 {
Kojto 99:dbbf35b96557 665 uint32_t result;
Kojto 99:dbbf35b96557 666
Kojto 99:dbbf35b96557 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 99:dbbf35b96557 668 return(result);
Kojto 99:dbbf35b96557 669 }
Kojto 99:dbbf35b96557 670
Kojto 99:dbbf35b96557 671
Kojto 99:dbbf35b96557 672 /** \brief STR Exclusive (8 bit)
Kojto 99:dbbf35b96557 673
Kojto 110:165afa46840b 674 This function executes a exclusive STR instruction for 8 bit values.
Kojto 99:dbbf35b96557 675
Kojto 99:dbbf35b96557 676 \param [in] value Value to store
Kojto 99:dbbf35b96557 677 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 678 \return 0 Function succeeded
Kojto 99:dbbf35b96557 679 \return 1 Function failed
Kojto 99:dbbf35b96557 680 */
Kojto 110:165afa46840b 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
Kojto 99:dbbf35b96557 682 {
Kojto 99:dbbf35b96557 683 uint32_t result;
Kojto 99:dbbf35b96557 684
Kojto 110:165afa46840b 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 99:dbbf35b96557 686 return(result);
Kojto 99:dbbf35b96557 687 }
Kojto 99:dbbf35b96557 688
Kojto 99:dbbf35b96557 689
Kojto 99:dbbf35b96557 690 /** \brief STR Exclusive (16 bit)
Kojto 99:dbbf35b96557 691
Kojto 110:165afa46840b 692 This function executes a exclusive STR instruction for 16 bit values.
Kojto 99:dbbf35b96557 693
Kojto 99:dbbf35b96557 694 \param [in] value Value to store
Kojto 99:dbbf35b96557 695 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 696 \return 0 Function succeeded
Kojto 99:dbbf35b96557 697 \return 1 Function failed
Kojto 99:dbbf35b96557 698 */
Kojto 110:165afa46840b 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
Kojto 99:dbbf35b96557 700 {
Kojto 99:dbbf35b96557 701 uint32_t result;
Kojto 99:dbbf35b96557 702
Kojto 110:165afa46840b 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 99:dbbf35b96557 704 return(result);
Kojto 99:dbbf35b96557 705 }
Kojto 99:dbbf35b96557 706
Kojto 99:dbbf35b96557 707
Kojto 99:dbbf35b96557 708 /** \brief STR Exclusive (32 bit)
Kojto 99:dbbf35b96557 709
Kojto 110:165afa46840b 710 This function executes a exclusive STR instruction for 32 bit values.
Kojto 99:dbbf35b96557 711
Kojto 99:dbbf35b96557 712 \param [in] value Value to store
Kojto 99:dbbf35b96557 713 \param [in] ptr Pointer to location
Kojto 99:dbbf35b96557 714 \return 0 Function succeeded
Kojto 99:dbbf35b96557 715 \return 1 Function failed
Kojto 99:dbbf35b96557 716 */
Kojto 110:165afa46840b 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
Kojto 99:dbbf35b96557 718 {
Kojto 99:dbbf35b96557 719 uint32_t result;
Kojto 99:dbbf35b96557 720
Kojto 99:dbbf35b96557 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 99:dbbf35b96557 722 return(result);
Kojto 99:dbbf35b96557 723 }
Kojto 99:dbbf35b96557 724
Kojto 99:dbbf35b96557 725
Kojto 99:dbbf35b96557 726 /** \brief Remove the exclusive lock
Kojto 99:dbbf35b96557 727
Kojto 99:dbbf35b96557 728 This function removes the exclusive lock which is created by LDREX.
Kojto 99:dbbf35b96557 729
Kojto 99:dbbf35b96557 730 */
Kojto 110:165afa46840b 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
Kojto 99:dbbf35b96557 732 {
Kojto 99:dbbf35b96557 733 __ASM volatile ("clrex" ::: "memory");
Kojto 99:dbbf35b96557 734 }
Kojto 99:dbbf35b96557 735
Kojto 99:dbbf35b96557 736
Kojto 99:dbbf35b96557 737 /** \brief Signed Saturate
Kojto 99:dbbf35b96557 738
Kojto 99:dbbf35b96557 739 This function saturates a signed value.
Kojto 99:dbbf35b96557 740
Kojto 99:dbbf35b96557 741 \param [in] value Value to be saturated
Kojto 99:dbbf35b96557 742 \param [in] sat Bit position to saturate to (1..32)
Kojto 99:dbbf35b96557 743 \return Saturated value
Kojto 99:dbbf35b96557 744 */
Kojto 99:dbbf35b96557 745 #define __SSAT(ARG1,ARG2) \
Kojto 99:dbbf35b96557 746 ({ \
Kojto 99:dbbf35b96557 747 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 99:dbbf35b96557 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 99:dbbf35b96557 749 __RES; \
Kojto 99:dbbf35b96557 750 })
Kojto 99:dbbf35b96557 751
Kojto 99:dbbf35b96557 752
Kojto 99:dbbf35b96557 753 /** \brief Unsigned Saturate
Kojto 99:dbbf35b96557 754
Kojto 99:dbbf35b96557 755 This function saturates an unsigned value.
Kojto 99:dbbf35b96557 756
Kojto 99:dbbf35b96557 757 \param [in] value Value to be saturated
Kojto 99:dbbf35b96557 758 \param [in] sat Bit position to saturate to (0..31)
Kojto 99:dbbf35b96557 759 \return Saturated value
Kojto 99:dbbf35b96557 760 */
Kojto 99:dbbf35b96557 761 #define __USAT(ARG1,ARG2) \
Kojto 99:dbbf35b96557 762 ({ \
Kojto 99:dbbf35b96557 763 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 99:dbbf35b96557 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 99:dbbf35b96557 765 __RES; \
Kojto 99:dbbf35b96557 766 })
Kojto 99:dbbf35b96557 767
Kojto 99:dbbf35b96557 768
Kojto 110:165afa46840b 769 /** \brief Rotate Right with Extend (32 bit)
Kojto 99:dbbf35b96557 770
Kojto 110:165afa46840b 771 This function moves each bit of a bitstring right by one bit.
Kojto 110:165afa46840b 772 The carry input is shifted in at the left end of the bitstring.
Kojto 99:dbbf35b96557 773
Kojto 110:165afa46840b 774 \param [in] value Value to rotate
Kojto 110:165afa46840b 775 \return Rotated value
Kojto 99:dbbf35b96557 776 */
Kojto 110:165afa46840b 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
Kojto 99:dbbf35b96557 778 {
Kojto 110:165afa46840b 779 uint32_t result;
Kojto 99:dbbf35b96557 780
Kojto 110:165afa46840b 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 99:dbbf35b96557 782 return(result);
Kojto 99:dbbf35b96557 783 }
Kojto 99:dbbf35b96557 784
Kojto 110:165afa46840b 785
Kojto 110:165afa46840b 786 /** \brief LDRT Unprivileged (8 bit)
Kojto 110:165afa46840b 787
Kojto 110:165afa46840b 788 This function executes a Unprivileged LDRT instruction for 8 bit value.
Kojto 110:165afa46840b 789
Kojto 110:165afa46840b 790 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 791 \return value of type uint8_t at (*ptr)
Kojto 110:165afa46840b 792 */
Kojto 110:165afa46840b 793 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDRBT(volatile uint8_t *addr)
Kojto 110:165afa46840b 794 {
Kojto 110:165afa46840b 795 uint32_t result;
Kojto 110:165afa46840b 796
Kojto 110:165afa46840b 797 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 110:165afa46840b 798 __ASM volatile ("ldrbt %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 110:165afa46840b 799 #else
Kojto 110:165afa46840b 800 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 110:165afa46840b 801 accepted by assembler. So has to use following less efficient pattern.
Kojto 110:165afa46840b 802 */
Kojto 110:165afa46840b 803 __ASM volatile ("ldrbt %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 110:165afa46840b 804 #endif
Kojto 110:165afa46840b 805 return ((uint8_t) result); /* Add explicit type cast here */
Kojto 110:165afa46840b 806 }
Kojto 110:165afa46840b 807
Kojto 110:165afa46840b 808
Kojto 110:165afa46840b 809 /** \brief LDRT Unprivileged (16 bit)
Kojto 110:165afa46840b 810
Kojto 110:165afa46840b 811 This function executes a Unprivileged LDRT instruction for 16 bit values.
Kojto 110:165afa46840b 812
Kojto 110:165afa46840b 813 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 814 \return value of type uint16_t at (*ptr)
Kojto 110:165afa46840b 815 */
Kojto 110:165afa46840b 816 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDRHT(volatile uint16_t *addr)
Kojto 110:165afa46840b 817 {
Kojto 110:165afa46840b 818 uint32_t result;
Kojto 110:165afa46840b 819
Kojto 110:165afa46840b 820 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 110:165afa46840b 821 __ASM volatile ("ldrht %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 110:165afa46840b 822 #else
Kojto 110:165afa46840b 823 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 110:165afa46840b 824 accepted by assembler. So has to use following less efficient pattern.
Kojto 110:165afa46840b 825 */
Kojto 110:165afa46840b 826 __ASM volatile ("ldrht %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 110:165afa46840b 827 #endif
Kojto 110:165afa46840b 828 return ((uint16_t) result); /* Add explicit type cast here */
Kojto 110:165afa46840b 829 }
Kojto 99:dbbf35b96557 830
Kojto 99:dbbf35b96557 831
Kojto 110:165afa46840b 832 /** \brief LDRT Unprivileged (32 bit)
Kojto 110:165afa46840b 833
Kojto 110:165afa46840b 834 This function executes a Unprivileged LDRT instruction for 32 bit values.
Kojto 110:165afa46840b 835
Kojto 110:165afa46840b 836 \param [in] ptr Pointer to data
Kojto 110:165afa46840b 837 \return value of type uint32_t at (*ptr)
Kojto 110:165afa46840b 838 */
Kojto 110:165afa46840b 839 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDRT(volatile uint32_t *addr)
Kojto 110:165afa46840b 840 {
Kojto 110:165afa46840b 841 uint32_t result;
Kojto 110:165afa46840b 842
Kojto 110:165afa46840b 843 __ASM volatile ("ldrt %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 110:165afa46840b 844 return(result);
Kojto 110:165afa46840b 845 }
Kojto 110:165afa46840b 846
Kojto 110:165afa46840b 847
Kojto 110:165afa46840b 848 /** \brief STRT Unprivileged (8 bit)
Kojto 110:165afa46840b 849
Kojto 110:165afa46840b 850 This function executes a Unprivileged STRT instruction for 8 bit values.
Kojto 110:165afa46840b 851
Kojto 110:165afa46840b 852 \param [in] value Value to store
Kojto 110:165afa46840b 853 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 854 */
Kojto 110:165afa46840b 855 __attribute__((always_inline)) __STATIC_INLINE void __STRBT(uint8_t value, volatile uint8_t *addr)
Kojto 110:165afa46840b 856 {
Kojto 110:165afa46840b 857 __ASM volatile ("strbt %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 110:165afa46840b 858 }
Kojto 110:165afa46840b 859
Kojto 110:165afa46840b 860
Kojto 110:165afa46840b 861 /** \brief STRT Unprivileged (16 bit)
Kojto 110:165afa46840b 862
Kojto 110:165afa46840b 863 This function executes a Unprivileged STRT instruction for 16 bit values.
Kojto 110:165afa46840b 864
Kojto 110:165afa46840b 865 \param [in] value Value to store
Kojto 110:165afa46840b 866 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 867 */
Kojto 110:165afa46840b 868 __attribute__((always_inline)) __STATIC_INLINE void __STRHT(uint16_t value, volatile uint16_t *addr)
Kojto 110:165afa46840b 869 {
Kojto 110:165afa46840b 870 __ASM volatile ("strht %1, %0" : "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 110:165afa46840b 871 }
Kojto 110:165afa46840b 872
Kojto 110:165afa46840b 873
Kojto 110:165afa46840b 874 /** \brief STRT Unprivileged (32 bit)
Kojto 110:165afa46840b 875
Kojto 110:165afa46840b 876 This function executes a Unprivileged STRT instruction for 32 bit values.
Kojto 110:165afa46840b 877
Kojto 110:165afa46840b 878 \param [in] value Value to store
Kojto 110:165afa46840b 879 \param [in] ptr Pointer to location
Kojto 110:165afa46840b 880 */
Kojto 110:165afa46840b 881 __attribute__((always_inline)) __STATIC_INLINE void __STRT(uint32_t value, volatile uint32_t *addr)
Kojto 110:165afa46840b 882 {
Kojto 110:165afa46840b 883 __ASM volatile ("strt %1, %0" : "=Q" (*addr) : "r" (value) );
Kojto 110:165afa46840b 884 }
Kojto 110:165afa46840b 885
Kojto 110:165afa46840b 886 #endif /* (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300) */
Kojto 110:165afa46840b 887
Kojto 110:165afa46840b 888
Kojto 110:165afa46840b 889 #elif defined ( __ICCARM__ ) /*------------------ ICC Compiler -------------------*/
Kojto 110:165afa46840b 890 /* IAR iccarm specific functions */
Kojto 110:165afa46840b 891 #include <cmsis_iar.h>
Kojto 110:165afa46840b 892
Kojto 110:165afa46840b 893
Kojto 110:165afa46840b 894 #elif defined ( __TMS470__ ) /*---------------- TI CCS Compiler ------------------*/
Kojto 110:165afa46840b 895 /* TI CCS specific functions */
Kojto 110:165afa46840b 896 #include <cmsis_ccs.h>
Kojto 99:dbbf35b96557 897
Kojto 99:dbbf35b96557 898
Kojto 99:dbbf35b96557 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
Kojto 99:dbbf35b96557 900 /* TASKING carm specific functions */
Kojto 99:dbbf35b96557 901 /*
Kojto 99:dbbf35b96557 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
Kojto 99:dbbf35b96557 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
Kojto 99:dbbf35b96557 904 * Including the CMSIS ones.
Kojto 99:dbbf35b96557 905 */
Kojto 99:dbbf35b96557 906
Kojto 110:165afa46840b 907
Kojto 110:165afa46840b 908 #elif defined ( __CSMC__ ) /*------------------ COSMIC Compiler -------------------*/
Kojto 110:165afa46840b 909 /* Cosmic specific functions */
Kojto 110:165afa46840b 910 #include <cmsis_csm.h>
Kojto 110:165afa46840b 911
Kojto 99:dbbf35b96557 912 #endif
Kojto 99:dbbf35b96557 913
Kojto 99:dbbf35b96557 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
Kojto 99:dbbf35b96557 915
Kojto 99:dbbf35b96557 916 #endif /* __CORE_CMINSTR_H */