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_SSCI824/core_cmInstr.h@140:97feb9bacc10, 2017-04-12 (annotated)

Committer:
<>
Date:
Wed Apr 12 16:07:08 2017 +0100
Revision:
140:97feb9bacc10
Parent:
110:165afa46840b 
Release 140 of the mbed library



Ports for Upcoming Targets



3841: Add nRf52840 target https://github.com/ARMmbed/mbed-os/pull/3841

3992: Introducing UBLOX_C030 platform. https://github.com/ARMmbed/mbed-os/pull/3992



Fixes and Changes



3951: [NUCLEO_F303ZE] Correct ARDUINO pin https://github.com/ARMmbed/mbed-os/pull/3951

4021: Fixing a macro to detect when RTOS was in use for the NRF52840_DK https://github.com/ARMmbed/mbed-os/pull/4021

3979: KW24D: Add missing SPI defines and Arduino connector definitions https://github.com/ARMmbed/mbed-os/pull/3979

3990: UBLOX_C027: construct a ticker-based wait, rather than calling wait_ms(), in the  https://github.com/ARMmbed/mbed-os/pull/3990

4003: Fixed OBOE in async serial tx for NRF52 target, fixes #4002 https://github.com/ARMmbed/mbed-os/pull/4003

4012: STM32: Correct I2C master error handling https://github.com/ARMmbed/mbed-os/pull/4012

4020: NUCLEO_L011K4 remove unsupported tool chain files https://github.com/ARMmbed/mbed-os/pull/4020

4065: K66F: Move bss section to m_data_2 Section https://github.com/ARMmbed/mbed-os/pull/4065

4014: Issue 3763: Reduce heap allocation in the GCC linker file https://github.com/ARMmbed/mbed-os/pull/4014

4030: [STM32L0] reduce IAR heap and stack size for small targets https://github.com/ARMmbed/mbed-os/pull/4030

4109: NUCLEO_L476RG : minor serial pin update https://github.com/ARMmbed/mbed-os/pull/4109

3982: Ticker - kl25z bugfix for handling events in the past https://github.com/ARMmbed/mbed-os/pull/3982

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 90:cb3d968589d8 1 /**************************************************************************//**
Kojto 90:cb3d968589d8 2 * @file core_cmInstr.h
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 6 *
Kojto 90:cb3d968589d8 7 * @note
Kojto 90:cb3d968589d8 8 *
Kojto 90:cb3d968589d8 9 ******************************************************************************/
Kojto 110:165afa46840b 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
Kojto 90:cb3d968589d8 11
Kojto 90:cb3d968589d8 12 All rights reserved.
Kojto 90:cb3d968589d8 13 Redistribution and use in source and binary forms, with or without
Kojto 90:cb3d968589d8 14 modification, are permitted provided that the following conditions are met:
Kojto 90:cb3d968589d8 15 - Redistributions of source code must retain the above copyright
Kojto 90:cb3d968589d8 16 notice, this list of conditions and the following disclaimer.
Kojto 90:cb3d968589d8 17 - Redistributions in binary form must reproduce the above copyright
Kojto 90:cb3d968589d8 18 notice, this list of conditions and the following disclaimer in the
Kojto 90:cb3d968589d8 19 documentation and/or other materials provided with the distribution.
Kojto 90:cb3d968589d8 20 - Neither the name of ARM nor the names of its contributors may be used
Kojto 90:cb3d968589d8 21 to endorse or promote products derived from this software without
Kojto 90:cb3d968589d8 22 specific prior written permission.
Kojto 90:cb3d968589d8 23 *
Kojto 90:cb3d968589d8 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Kojto 90:cb3d968589d8 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Kojto 90:cb3d968589d8 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Kojto 90:cb3d968589d8 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Kojto 90:cb3d968589d8 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Kojto 90:cb3d968589d8 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Kojto 90:cb3d968589d8 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Kojto 90:cb3d968589d8 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Kojto 90:cb3d968589d8 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Kojto 90:cb3d968589d8 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Kojto 90:cb3d968589d8 34 POSSIBILITY OF SUCH DAMAGE.
Kojto 90:cb3d968589d8 35 ---------------------------------------------------------------------------*/
Kojto 90:cb3d968589d8 36
Kojto 90:cb3d968589d8 37
Kojto 90:cb3d968589d8 38 #ifndef __CORE_CMINSTR_H
Kojto 90:cb3d968589d8 39 #define __CORE_CMINSTR_H
Kojto 90:cb3d968589d8 40
Kojto 90:cb3d968589d8 41
Kojto 90:cb3d968589d8 42 /* ########################## Core Instruction Access ######################### */
Kojto 90:cb3d968589d8 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Kojto 90:cb3d968589d8 44 Access to dedicated instructions
Kojto 90:cb3d968589d8 45 @{
Kojto 90:cb3d968589d8 46 */
Kojto 90:cb3d968589d8 47
Kojto 90:cb3d968589d8 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
Kojto 90:cb3d968589d8 49 /* ARM armcc specific functions */
Kojto 90:cb3d968589d8 50
Kojto 90:cb3d968589d8 51 #if (__ARMCC_VERSION < 400677)
Kojto 90:cb3d968589d8 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
Kojto 90:cb3d968589d8 53 #endif
Kojto 90:cb3d968589d8 54
Kojto 90:cb3d968589d8 55
Kojto 90:cb3d968589d8 56 /** \brief No Operation
Kojto 90:cb3d968589d8 57
Kojto 90:cb3d968589d8 58 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 90:cb3d968589d8 59 */
Kojto 90:cb3d968589d8 60 #define __NOP __nop
Kojto 90:cb3d968589d8 61
Kojto 90:cb3d968589d8 62
Kojto 90:cb3d968589d8 63 /** \brief Wait For Interrupt
Kojto 90:cb3d968589d8 64
Kojto 90:cb3d968589d8 65 Wait For Interrupt is a hint instruction that suspends execution
Kojto 90:cb3d968589d8 66 until one of a number of events occurs.
Kojto 90:cb3d968589d8 67 */
Kojto 90:cb3d968589d8 68 #define __WFI __wfi
Kojto 90:cb3d968589d8 69
Kojto 90:cb3d968589d8 70
Kojto 90:cb3d968589d8 71 /** \brief Wait For Event
Kojto 90:cb3d968589d8 72
Kojto 90:cb3d968589d8 73 Wait For Event is a hint instruction that permits the processor to enter
Kojto 90:cb3d968589d8 74 a low-power state until one of a number of events occurs.
Kojto 90:cb3d968589d8 75 */
Kojto 90:cb3d968589d8 76 #define __WFE __wfe
Kojto 90:cb3d968589d8 77
Kojto 90:cb3d968589d8 78
Kojto 90:cb3d968589d8 79 /** \brief Send Event
Kojto 90:cb3d968589d8 80
Kojto 90:cb3d968589d8 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 90:cb3d968589d8 82 */
Kojto 90:cb3d968589d8 83 #define __SEV __sev
Kojto 90:cb3d968589d8 84
Kojto 90:cb3d968589d8 85
Kojto 90:cb3d968589d8 86 /** \brief Instruction Synchronization Barrier
Kojto 90:cb3d968589d8 87
Kojto 90:cb3d968589d8 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 90:cb3d968589d8 89 so that all instructions following the ISB are fetched from cache or
Kojto 90:cb3d968589d8 90 memory, after the instruction has been completed.
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 97
Kojto 90:cb3d968589d8 98 /** \brief Data Synchronization Barrier
Kojto 90:cb3d968589d8 99
Kojto 90:cb3d968589d8 100 This function acts as a special kind of Data Memory Barrier.
Kojto 90:cb3d968589d8 101 It completes when all explicit memory accesses before this instruction complete.
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 108
Kojto 90:cb3d968589d8 109 /** \brief Data Memory Barrier
Kojto 90:cb3d968589d8 110
Kojto 90:cb3d968589d8 111 This function ensures the apparent order of the explicit memory operations before
Kojto 90:cb3d968589d8 112 and after the instruction, without ensuring their completion.
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 119
Kojto 90:cb3d968589d8 120 /** \brief Reverse byte order (32 bit)
Kojto 90:cb3d968589d8 121
Kojto 90:cb3d968589d8 122 This function reverses the byte order in integer value.
Kojto 90:cb3d968589d8 123
Kojto 90:cb3d968589d8 124 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 125 \return Reversed value
Kojto 90:cb3d968589d8 126 */
Kojto 90:cb3d968589d8 127 #define __REV __rev
Kojto 90:cb3d968589d8 128
Kojto 90:cb3d968589d8 129
Kojto 90:cb3d968589d8 130 /** \brief Reverse byte order (16 bit)
Kojto 90:cb3d968589d8 131
Kojto 90:cb3d968589d8 132 This function reverses the byte order in two unsigned short values.
Kojto 90:cb3d968589d8 133
Kojto 90:cb3d968589d8 134 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 135 \return Reversed value
Kojto 90:cb3d968589d8 136 */
Kojto 90:cb3d968589d8 137 #ifndef __NO_EMBEDDED_ASM
Kojto 90:cb3d968589d8 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
Kojto 90:cb3d968589d8 139 {
Kojto 90:cb3d968589d8 140 rev16 r0, r0
Kojto 90:cb3d968589d8 141 bx lr
Kojto 90:cb3d968589d8 142 }
Kojto 90:cb3d968589d8 143 #endif
Kojto 90:cb3d968589d8 144
Kojto 90:cb3d968589d8 145 /** \brief Reverse byte order in signed short value
Kojto 90:cb3d968589d8 146
Kojto 90:cb3d968589d8 147 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 90:cb3d968589d8 148
Kojto 90:cb3d968589d8 149 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 150 \return Reversed value
Kojto 90:cb3d968589d8 151 */
Kojto 90:cb3d968589d8 152 #ifndef __NO_EMBEDDED_ASM
Kojto 90:cb3d968589d8 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
Kojto 90:cb3d968589d8 154 {
Kojto 90:cb3d968589d8 155 revsh r0, r0
Kojto 90:cb3d968589d8 156 bx lr
Kojto 90:cb3d968589d8 157 }
Kojto 90:cb3d968589d8 158 #endif
Kojto 90:cb3d968589d8 159
Kojto 90:cb3d968589d8 160
Kojto 90:cb3d968589d8 161 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 90:cb3d968589d8 162
Kojto 90:cb3d968589d8 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 90:cb3d968589d8 164
Kojto 90:cb3d968589d8 165 \param [in] value Value to rotate
Kojto 90:cb3d968589d8 166 \param [in] value Number of Bits to rotate
Kojto 90:cb3d968589d8 167 \return Rotated value
Kojto 90:cb3d968589d8 168 */
Kojto 90:cb3d968589d8 169 #define __ROR __ror
Kojto 90:cb3d968589d8 170
Kojto 90:cb3d968589d8 171
Kojto 90:cb3d968589d8 172 /** \brief Breakpoint
Kojto 90:cb3d968589d8 173
Kojto 90:cb3d968589d8 174 This function causes the processor to enter Debug state.
Kojto 90:cb3d968589d8 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 90:cb3d968589d8 176
Kojto 90:cb3d968589d8 177 \param [in] value is ignored by the processor.
Kojto 90:cb3d968589d8 178 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 90:cb3d968589d8 179 */
Kojto 90:cb3d968589d8 180 #define __BKPT(value) __breakpoint(value)
Kojto 90:cb3d968589d8 181
Kojto 90:cb3d968589d8 182
Kojto 90:cb3d968589d8 183 /** \brief Reverse bit order of value
Kojto 90:cb3d968589d8 184
Kojto 90:cb3d968589d8 185 This function reverses the bit order of the given value.
Kojto 90:cb3d968589d8 186
Kojto 90:cb3d968589d8 187 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 188 \return Reversed value
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 222
Kojto 90:cb3d968589d8 223 /** \brief LDR Exclusive (8 bit)
Kojto 90:cb3d968589d8 224
Kojto 110:165afa46840b 225 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 90:cb3d968589d8 226
Kojto 90:cb3d968589d8 227 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 228 \return value of type uint8_t at (*ptr)
Kojto 90:cb3d968589d8 229 */
Kojto 90:cb3d968589d8 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
Kojto 90:cb3d968589d8 231
Kojto 90:cb3d968589d8 232
Kojto 90:cb3d968589d8 233 /** \brief LDR Exclusive (16 bit)
Kojto 90:cb3d968589d8 234
Kojto 110:165afa46840b 235 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 90:cb3d968589d8 236
Kojto 90:cb3d968589d8 237 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 238 \return value of type uint16_t at (*ptr)
Kojto 90:cb3d968589d8 239 */
Kojto 90:cb3d968589d8 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
Kojto 90:cb3d968589d8 241
Kojto 90:cb3d968589d8 242
Kojto 90:cb3d968589d8 243 /** \brief LDR Exclusive (32 bit)
Kojto 90:cb3d968589d8 244
Kojto 110:165afa46840b 245 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 90:cb3d968589d8 246
Kojto 90:cb3d968589d8 247 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 248 \return value of type uint32_t at (*ptr)
Kojto 90:cb3d968589d8 249 */
Kojto 90:cb3d968589d8 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
Kojto 90:cb3d968589d8 251
Kojto 90:cb3d968589d8 252
Kojto 90:cb3d968589d8 253 /** \brief STR Exclusive (8 bit)
Kojto 90:cb3d968589d8 254
Kojto 110:165afa46840b 255 This function executes a exclusive STR instruction for 8 bit values.
Kojto 90:cb3d968589d8 256
Kojto 90:cb3d968589d8 257 \param [in] value Value to store
Kojto 90:cb3d968589d8 258 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 259 \return 0 Function succeeded
Kojto 90:cb3d968589d8 260 \return 1 Function failed
Kojto 90:cb3d968589d8 261 */
Kojto 90:cb3d968589d8 262 #define __STREXB(value, ptr) __strex(value, ptr)
Kojto 90:cb3d968589d8 263
Kojto 90:cb3d968589d8 264
Kojto 90:cb3d968589d8 265 /** \brief STR Exclusive (16 bit)
Kojto 90:cb3d968589d8 266
Kojto 110:165afa46840b 267 This function executes a exclusive STR instruction for 16 bit values.
Kojto 90:cb3d968589d8 268
Kojto 90:cb3d968589d8 269 \param [in] value Value to store
Kojto 90:cb3d968589d8 270 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 271 \return 0 Function succeeded
Kojto 90:cb3d968589d8 272 \return 1 Function failed
Kojto 90:cb3d968589d8 273 */
Kojto 90:cb3d968589d8 274 #define __STREXH(value, ptr) __strex(value, ptr)
Kojto 90:cb3d968589d8 275
Kojto 90:cb3d968589d8 276
Kojto 90:cb3d968589d8 277 /** \brief STR Exclusive (32 bit)
Kojto 90:cb3d968589d8 278
Kojto 110:165afa46840b 279 This function executes a exclusive STR instruction for 32 bit values.
Kojto 90:cb3d968589d8 280
Kojto 90:cb3d968589d8 281 \param [in] value Value to store
Kojto 90:cb3d968589d8 282 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 283 \return 0 Function succeeded
Kojto 90:cb3d968589d8 284 \return 1 Function failed
Kojto 90:cb3d968589d8 285 */
Kojto 90:cb3d968589d8 286 #define __STREXW(value, ptr) __strex(value, ptr)
Kojto 90:cb3d968589d8 287
Kojto 90:cb3d968589d8 288
Kojto 90:cb3d968589d8 289 /** \brief Remove the exclusive lock
Kojto 90:cb3d968589d8 290
Kojto 90:cb3d968589d8 291 This function removes the exclusive lock which is created by LDREX.
Kojto 90:cb3d968589d8 292
Kojto 90:cb3d968589d8 293 */
Kojto 90:cb3d968589d8 294 #define __CLREX __clrex
Kojto 90:cb3d968589d8 295
Kojto 90:cb3d968589d8 296
Kojto 90:cb3d968589d8 297 /** \brief Signed Saturate
Kojto 90:cb3d968589d8 298
Kojto 90:cb3d968589d8 299 This function saturates a signed value.
Kojto 90:cb3d968589d8 300
Kojto 90:cb3d968589d8 301 \param [in] value Value to be saturated
Kojto 90:cb3d968589d8 302 \param [in] sat Bit position to saturate to (1..32)
Kojto 90:cb3d968589d8 303 \return Saturated value
Kojto 90:cb3d968589d8 304 */
Kojto 90:cb3d968589d8 305 #define __SSAT __ssat
Kojto 90:cb3d968589d8 306
Kojto 90:cb3d968589d8 307
Kojto 90:cb3d968589d8 308 /** \brief Unsigned Saturate
Kojto 90:cb3d968589d8 309
Kojto 90:cb3d968589d8 310 This function saturates an unsigned value.
Kojto 90:cb3d968589d8 311
Kojto 90:cb3d968589d8 312 \param [in] value Value to be saturated
Kojto 90:cb3d968589d8 313 \param [in] sat Bit position to saturate to (0..31)
Kojto 90:cb3d968589d8 314 \return Saturated value
Kojto 90:cb3d968589d8 315 */
Kojto 90:cb3d968589d8 316 #define __USAT __usat
Kojto 90:cb3d968589d8 317
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 354
Kojto 90:cb3d968589d8 355
Kojto 110:165afa46840b 356 /** \brief LDRT Unprivileged (32 bit)
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 374
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 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 90:cb3d968589d8 396
Kojto 90:cb3d968589d8 397
Kojto 90:cb3d968589d8 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
Kojto 90:cb3d968589d8 399 /* GNU gcc specific functions */
Kojto 90:cb3d968589d8 400
Kojto 90:cb3d968589d8 401 /* Define macros for porting to both thumb1 and thumb2.
Kojto 90:cb3d968589d8 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
Kojto 90:cb3d968589d8 403 * Otherwise, use general registers, specified by constrant "r" */
Kojto 90:cb3d968589d8 404 #if defined (__thumb__) && !defined (__thumb2__)
Kojto 90:cb3d968589d8 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
Kojto 90:cb3d968589d8 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
Kojto 90:cb3d968589d8 407 #else
Kojto 90:cb3d968589d8 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
Kojto 90:cb3d968589d8 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
Kojto 90:cb3d968589d8 410 #endif
Kojto 90:cb3d968589d8 411
Kojto 90:cb3d968589d8 412 /** \brief No Operation
Kojto 90:cb3d968589d8 413
Kojto 90:cb3d968589d8 414 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 90:cb3d968589d8 415 */
Kojto 110:165afa46840b 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
Kojto 90:cb3d968589d8 417 {
Kojto 90:cb3d968589d8 418 __ASM volatile ("nop");
Kojto 90:cb3d968589d8 419 }
Kojto 90:cb3d968589d8 420
Kojto 90:cb3d968589d8 421
Kojto 90:cb3d968589d8 422 /** \brief Wait For Interrupt
Kojto 90:cb3d968589d8 423
Kojto 90:cb3d968589d8 424 Wait For Interrupt is a hint instruction that suspends execution
Kojto 90:cb3d968589d8 425 until one of a number of events occurs.
Kojto 90:cb3d968589d8 426 */
Kojto 110:165afa46840b 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
Kojto 90:cb3d968589d8 428 {
Kojto 90:cb3d968589d8 429 __ASM volatile ("wfi");
Kojto 90:cb3d968589d8 430 }
Kojto 90:cb3d968589d8 431
Kojto 90:cb3d968589d8 432
Kojto 90:cb3d968589d8 433 /** \brief Wait For Event
Kojto 90:cb3d968589d8 434
Kojto 90:cb3d968589d8 435 Wait For Event is a hint instruction that permits the processor to enter
Kojto 90:cb3d968589d8 436 a low-power state until one of a number of events occurs.
Kojto 90:cb3d968589d8 437 */
Kojto 110:165afa46840b 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
Kojto 90:cb3d968589d8 439 {
Kojto 90:cb3d968589d8 440 __ASM volatile ("wfe");
Kojto 90:cb3d968589d8 441 }
Kojto 90:cb3d968589d8 442
Kojto 90:cb3d968589d8 443
Kojto 90:cb3d968589d8 444 /** \brief Send Event
Kojto 90:cb3d968589d8 445
Kojto 90:cb3d968589d8 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 90:cb3d968589d8 447 */
Kojto 110:165afa46840b 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
Kojto 90:cb3d968589d8 449 {
Kojto 90:cb3d968589d8 450 __ASM volatile ("sev");
Kojto 90:cb3d968589d8 451 }
Kojto 90:cb3d968589d8 452
Kojto 90:cb3d968589d8 453
Kojto 90:cb3d968589d8 454 /** \brief Instruction Synchronization Barrier
Kojto 90:cb3d968589d8 455
Kojto 90:cb3d968589d8 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 90:cb3d968589d8 457 so that all instructions following the ISB are fetched from cache or
Kojto 90:cb3d968589d8 458 memory, after the instruction has been completed.
Kojto 90:cb3d968589d8 459 */
Kojto 110:165afa46840b 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
Kojto 90:cb3d968589d8 461 {
Kojto 110:165afa46840b 462 __ASM volatile ("isb 0xF":::"memory");
Kojto 90:cb3d968589d8 463 }
Kojto 90:cb3d968589d8 464
Kojto 90:cb3d968589d8 465
Kojto 90:cb3d968589d8 466 /** \brief Data Synchronization Barrier
Kojto 90:cb3d968589d8 467
Kojto 90:cb3d968589d8 468 This function acts as a special kind of Data Memory Barrier.
Kojto 90:cb3d968589d8 469 It completes when all explicit memory accesses before this instruction complete.
Kojto 90:cb3d968589d8 470 */
Kojto 110:165afa46840b 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
Kojto 90:cb3d968589d8 472 {
Kojto 110:165afa46840b 473 __ASM volatile ("dsb 0xF":::"memory");
Kojto 90:cb3d968589d8 474 }
Kojto 90:cb3d968589d8 475
Kojto 90:cb3d968589d8 476
Kojto 90:cb3d968589d8 477 /** \brief Data Memory Barrier
Kojto 90:cb3d968589d8 478
Kojto 90:cb3d968589d8 479 This function ensures the apparent order of the explicit memory operations before
Kojto 90:cb3d968589d8 480 and after the instruction, without ensuring their completion.
Kojto 90:cb3d968589d8 481 */
Kojto 110:165afa46840b 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
Kojto 90:cb3d968589d8 483 {
Kojto 110:165afa46840b 484 __ASM volatile ("dmb 0xF":::"memory");
Kojto 90:cb3d968589d8 485 }
Kojto 90:cb3d968589d8 486
Kojto 90:cb3d968589d8 487
Kojto 90:cb3d968589d8 488 /** \brief Reverse byte order (32 bit)
Kojto 90:cb3d968589d8 489
Kojto 90:cb3d968589d8 490 This function reverses the byte order in integer value.
Kojto 90:cb3d968589d8 491
Kojto 90:cb3d968589d8 492 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 493 \return Reversed value
Kojto 90:cb3d968589d8 494 */
Kojto 110:165afa46840b 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
Kojto 90:cb3d968589d8 496 {
Kojto 90:cb3d968589d8 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
Kojto 90:cb3d968589d8 498 return __builtin_bswap32(value);
Kojto 90:cb3d968589d8 499 #else
Kojto 90:cb3d968589d8 500 uint32_t result;
Kojto 90:cb3d968589d8 501
Kojto 90:cb3d968589d8 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 90:cb3d968589d8 503 return(result);
Kojto 90:cb3d968589d8 504 #endif
Kojto 90:cb3d968589d8 505 }
Kojto 90:cb3d968589d8 506
Kojto 90:cb3d968589d8 507
Kojto 90:cb3d968589d8 508 /** \brief Reverse byte order (16 bit)
Kojto 90:cb3d968589d8 509
Kojto 90:cb3d968589d8 510 This function reverses the byte order in two unsigned short values.
Kojto 90:cb3d968589d8 511
Kojto 90:cb3d968589d8 512 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 513 \return Reversed value
Kojto 90:cb3d968589d8 514 */
Kojto 110:165afa46840b 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
Kojto 90:cb3d968589d8 516 {
Kojto 90:cb3d968589d8 517 uint32_t result;
Kojto 90:cb3d968589d8 518
Kojto 90:cb3d968589d8 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 90:cb3d968589d8 520 return(result);
Kojto 90:cb3d968589d8 521 }
Kojto 90:cb3d968589d8 522
Kojto 90:cb3d968589d8 523
Kojto 90:cb3d968589d8 524 /** \brief Reverse byte order in signed short value
Kojto 90:cb3d968589d8 525
Kojto 90:cb3d968589d8 526 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 90:cb3d968589d8 527
Kojto 90:cb3d968589d8 528 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 529 \return Reversed value
Kojto 90:cb3d968589d8 530 */
Kojto 110:165afa46840b 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
Kojto 90:cb3d968589d8 532 {
Kojto 90:cb3d968589d8 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 90:cb3d968589d8 534 return (short)__builtin_bswap16(value);
Kojto 90:cb3d968589d8 535 #else
Kojto 90:cb3d968589d8 536 uint32_t result;
Kojto 90:cb3d968589d8 537
Kojto 90:cb3d968589d8 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 90:cb3d968589d8 539 return(result);
Kojto 90:cb3d968589d8 540 #endif
Kojto 90:cb3d968589d8 541 }
Kojto 90:cb3d968589d8 542
Kojto 90:cb3d968589d8 543
Kojto 90:cb3d968589d8 544 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 90:cb3d968589d8 545
Kojto 90:cb3d968589d8 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 90:cb3d968589d8 547
Kojto 90:cb3d968589d8 548 \param [in] value Value to rotate
Kojto 90:cb3d968589d8 549 \param [in] value Number of Bits to rotate
Kojto 90:cb3d968589d8 550 \return Rotated value
Kojto 90:cb3d968589d8 551 */
Kojto 110:165afa46840b 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
Kojto 90:cb3d968589d8 553 {
Kojto 110:165afa46840b 554 return (op1 >> op2) | (op1 << (32 - op2));
Kojto 90:cb3d968589d8 555 }
Kojto 90:cb3d968589d8 556
Kojto 90:cb3d968589d8 557
Kojto 90:cb3d968589d8 558 /** \brief Breakpoint
Kojto 90:cb3d968589d8 559
Kojto 90:cb3d968589d8 560 This function causes the processor to enter Debug state.
Kojto 90:cb3d968589d8 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 90:cb3d968589d8 562
Kojto 90:cb3d968589d8 563 \param [in] value is ignored by the processor.
Kojto 90:cb3d968589d8 564 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 90:cb3d968589d8 565 */
Kojto 90:cb3d968589d8 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
Kojto 90:cb3d968589d8 567
Kojto 90:cb3d968589d8 568
Kojto 90:cb3d968589d8 569 /** \brief Reverse bit order of value
Kojto 90:cb3d968589d8 570
Kojto 90:cb3d968589d8 571 This function reverses the bit order of the given value.
Kojto 90:cb3d968589d8 572
Kojto 90:cb3d968589d8 573 \param [in] value Value to reverse
Kojto 90:cb3d968589d8 574 \return Reversed value
Kojto 90:cb3d968589d8 575 */
Kojto 110:165afa46840b 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 90:cb3d968589d8 577 {
Kojto 90:cb3d968589d8 578 uint32_t result;
Kojto 90:cb3d968589d8 579
Kojto 110:165afa46840b 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 595 }
Kojto 90:cb3d968589d8 596
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 610 /** \brief LDR Exclusive (8 bit)
Kojto 90:cb3d968589d8 611
Kojto 110:165afa46840b 612 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 90:cb3d968589d8 613
Kojto 90:cb3d968589d8 614 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 615 \return value of type uint8_t at (*ptr)
Kojto 90:cb3d968589d8 616 */
Kojto 110:165afa46840b 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
Kojto 90:cb3d968589d8 618 {
Kojto 90:cb3d968589d8 619 uint32_t result;
Kojto 90:cb3d968589d8 620
Kojto 90:cb3d968589d8 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 90:cb3d968589d8 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 90:cb3d968589d8 623 #else
Kojto 90:cb3d968589d8 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 90:cb3d968589d8 625 accepted by assembler. So has to use following less efficient pattern.
Kojto 90:cb3d968589d8 626 */
Kojto 90:cb3d968589d8 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 90:cb3d968589d8 628 #endif
Kojto 110:165afa46840b 629 return ((uint8_t) result); /* Add explicit type cast here */
Kojto 90:cb3d968589d8 630 }
Kojto 90:cb3d968589d8 631
Kojto 90:cb3d968589d8 632
Kojto 90:cb3d968589d8 633 /** \brief LDR Exclusive (16 bit)
Kojto 90:cb3d968589d8 634
Kojto 110:165afa46840b 635 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 90:cb3d968589d8 636
Kojto 90:cb3d968589d8 637 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 638 \return value of type uint16_t at (*ptr)
Kojto 90:cb3d968589d8 639 */
Kojto 110:165afa46840b 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
Kojto 90:cb3d968589d8 641 {
Kojto 90:cb3d968589d8 642 uint32_t result;
Kojto 90:cb3d968589d8 643
Kojto 90:cb3d968589d8 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 90:cb3d968589d8 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 90:cb3d968589d8 646 #else
Kojto 90:cb3d968589d8 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 90:cb3d968589d8 648 accepted by assembler. So has to use following less efficient pattern.
Kojto 90:cb3d968589d8 649 */
Kojto 90:cb3d968589d8 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 90:cb3d968589d8 651 #endif
Kojto 110:165afa46840b 652 return ((uint16_t) result); /* Add explicit type cast here */
Kojto 90:cb3d968589d8 653 }
Kojto 90:cb3d968589d8 654
Kojto 90:cb3d968589d8 655
Kojto 90:cb3d968589d8 656 /** \brief LDR Exclusive (32 bit)
Kojto 90:cb3d968589d8 657
Kojto 110:165afa46840b 658 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 90:cb3d968589d8 659
Kojto 90:cb3d968589d8 660 \param [in] ptr Pointer to data
Kojto 90:cb3d968589d8 661 \return value of type uint32_t at (*ptr)
Kojto 90:cb3d968589d8 662 */
Kojto 110:165afa46840b 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
Kojto 90:cb3d968589d8 664 {
Kojto 90:cb3d968589d8 665 uint32_t result;
Kojto 90:cb3d968589d8 666
Kojto 90:cb3d968589d8 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 90:cb3d968589d8 668 return(result);
Kojto 90:cb3d968589d8 669 }
Kojto 90:cb3d968589d8 670
Kojto 90:cb3d968589d8 671
Kojto 90:cb3d968589d8 672 /** \brief STR Exclusive (8 bit)
Kojto 90:cb3d968589d8 673
Kojto 110:165afa46840b 674 This function executes a exclusive STR instruction for 8 bit values.
Kojto 90:cb3d968589d8 675
Kojto 90:cb3d968589d8 676 \param [in] value Value to store
Kojto 90:cb3d968589d8 677 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 678 \return 0 Function succeeded
Kojto 90:cb3d968589d8 679 \return 1 Function failed
Kojto 90:cb3d968589d8 680 */
Kojto 110:165afa46840b 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
Kojto 90:cb3d968589d8 682 {
Kojto 90:cb3d968589d8 683 uint32_t result;
Kojto 90:cb3d968589d8 684
Kojto 110:165afa46840b 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 90:cb3d968589d8 686 return(result);
Kojto 90:cb3d968589d8 687 }
Kojto 90:cb3d968589d8 688
Kojto 90:cb3d968589d8 689
Kojto 90:cb3d968589d8 690 /** \brief STR Exclusive (16 bit)
Kojto 90:cb3d968589d8 691
Kojto 110:165afa46840b 692 This function executes a exclusive STR instruction for 16 bit values.
Kojto 90:cb3d968589d8 693
Kojto 90:cb3d968589d8 694 \param [in] value Value to store
Kojto 90:cb3d968589d8 695 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 696 \return 0 Function succeeded
Kojto 90:cb3d968589d8 697 \return 1 Function failed
Kojto 90:cb3d968589d8 698 */
Kojto 110:165afa46840b 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
Kojto 90:cb3d968589d8 700 {
Kojto 90:cb3d968589d8 701 uint32_t result;
Kojto 90:cb3d968589d8 702
Kojto 110:165afa46840b 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 90:cb3d968589d8 704 return(result);
Kojto 90:cb3d968589d8 705 }
Kojto 90:cb3d968589d8 706
Kojto 90:cb3d968589d8 707
Kojto 90:cb3d968589d8 708 /** \brief STR Exclusive (32 bit)
Kojto 90:cb3d968589d8 709
Kojto 110:165afa46840b 710 This function executes a exclusive STR instruction for 32 bit values.
Kojto 90:cb3d968589d8 711
Kojto 90:cb3d968589d8 712 \param [in] value Value to store
Kojto 90:cb3d968589d8 713 \param [in] ptr Pointer to location
Kojto 90:cb3d968589d8 714 \return 0 Function succeeded
Kojto 90:cb3d968589d8 715 \return 1 Function failed
Kojto 90:cb3d968589d8 716 */
Kojto 110:165afa46840b 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
Kojto 90:cb3d968589d8 718 {
Kojto 90:cb3d968589d8 719 uint32_t result;
Kojto 90:cb3d968589d8 720
Kojto 90:cb3d968589d8 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 90:cb3d968589d8 722 return(result);
Kojto 90:cb3d968589d8 723 }
Kojto 90:cb3d968589d8 724
Kojto 90:cb3d968589d8 725
Kojto 90:cb3d968589d8 726 /** \brief Remove the exclusive lock
Kojto 90:cb3d968589d8 727
Kojto 90:cb3d968589d8 728 This function removes the exclusive lock which is created by LDREX.
Kojto 90:cb3d968589d8 729
Kojto 90:cb3d968589d8 730 */
Kojto 110:165afa46840b 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
Kojto 90:cb3d968589d8 732 {
Kojto 90:cb3d968589d8 733 __ASM volatile ("clrex" ::: "memory");
Kojto 90:cb3d968589d8 734 }
Kojto 90:cb3d968589d8 735
Kojto 90:cb3d968589d8 736
Kojto 90:cb3d968589d8 737 /** \brief Signed Saturate
Kojto 90:cb3d968589d8 738
Kojto 90:cb3d968589d8 739 This function saturates a signed value.
Kojto 90:cb3d968589d8 740
Kojto 90:cb3d968589d8 741 \param [in] value Value to be saturated
Kojto 90:cb3d968589d8 742 \param [in] sat Bit position to saturate to (1..32)
Kojto 90:cb3d968589d8 743 \return Saturated value
Kojto 90:cb3d968589d8 744 */
Kojto 90:cb3d968589d8 745 #define __SSAT(ARG1,ARG2) \
Kojto 90:cb3d968589d8 746 ({ \
Kojto 90:cb3d968589d8 747 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 90:cb3d968589d8 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 90:cb3d968589d8 749 __RES; \
Kojto 90:cb3d968589d8 750 })
Kojto 90:cb3d968589d8 751
Kojto 90:cb3d968589d8 752
Kojto 90:cb3d968589d8 753 /** \brief Unsigned Saturate
Kojto 90:cb3d968589d8 754
Kojto 90:cb3d968589d8 755 This function saturates an unsigned value.
Kojto 90:cb3d968589d8 756
Kojto 90:cb3d968589d8 757 \param [in] value Value to be saturated
Kojto 90:cb3d968589d8 758 \param [in] sat Bit position to saturate to (0..31)
Kojto 90:cb3d968589d8 759 \return Saturated value
Kojto 90:cb3d968589d8 760 */
Kojto 90:cb3d968589d8 761 #define __USAT(ARG1,ARG2) \
Kojto 90:cb3d968589d8 762 ({ \
Kojto 90:cb3d968589d8 763 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 90:cb3d968589d8 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 90:cb3d968589d8 765 __RES; \
Kojto 90:cb3d968589d8 766 })
Kojto 90:cb3d968589d8 767
Kojto 90:cb3d968589d8 768
Kojto 110:165afa46840b 769 /** \brief Rotate Right with Extend (32 bit)
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 773
Kojto 110:165afa46840b 774 \param [in] value Value to rotate
Kojto 110:165afa46840b 775 \return Rotated value
Kojto 90:cb3d968589d8 776 */
Kojto 110:165afa46840b 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
Kojto 90:cb3d968589d8 778 {
Kojto 110:165afa46840b 779 uint32_t result;
Kojto 90:cb3d968589d8 780
Kojto 110:165afa46840b 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 90:cb3d968589d8 782 return(result);
Kojto 90:cb3d968589d8 783 }
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 830
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 897
Kojto 90:cb3d968589d8 898
Kojto 90:cb3d968589d8 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
Kojto 90:cb3d968589d8 900 /* TASKING carm specific functions */
Kojto 90:cb3d968589d8 901 /*
Kojto 90:cb3d968589d8 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
Kojto 90:cb3d968589d8 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
Kojto 90:cb3d968589d8 904 * Including the CMSIS ones.
Kojto 90:cb3d968589d8 905 */
Kojto 90:cb3d968589d8 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 90:cb3d968589d8 912 #endif
Kojto 90:cb3d968589d8 913
Kojto 90:cb3d968589d8 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
Kojto 90:cb3d968589d8 915
Kojto 90:cb3d968589d8 916 #endif /* __CORE_CMINSTR_H */