mbed official / mbed

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

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mbed 2

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

TARGET_DISCO_F334C8/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 100:cbbeb26dbd92 1 /**************************************************************************//**
Kojto 100:cbbeb26dbd92 2 * @file core_cmInstr.h
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 6 *
Kojto 100:cbbeb26dbd92 7 * @note
Kojto 100:cbbeb26dbd92 8 *
Kojto 100:cbbeb26dbd92 9 ******************************************************************************/
Kojto 110:165afa46840b 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
Kojto 100:cbbeb26dbd92 11
Kojto 100:cbbeb26dbd92 12 All rights reserved.
Kojto 100:cbbeb26dbd92 13 Redistribution and use in source and binary forms, with or without
Kojto 100:cbbeb26dbd92 14 modification, are permitted provided that the following conditions are met:
Kojto 100:cbbeb26dbd92 15 - Redistributions of source code must retain the above copyright
Kojto 100:cbbeb26dbd92 16 notice, this list of conditions and the following disclaimer.
Kojto 100:cbbeb26dbd92 17 - Redistributions in binary form must reproduce the above copyright
Kojto 100:cbbeb26dbd92 18 notice, this list of conditions and the following disclaimer in the
Kojto 100:cbbeb26dbd92 19 documentation and/or other materials provided with the distribution.
Kojto 100:cbbeb26dbd92 20 - Neither the name of ARM nor the names of its contributors may be used
Kojto 100:cbbeb26dbd92 21 to endorse or promote products derived from this software without
Kojto 100:cbbeb26dbd92 22 specific prior written permission.
Kojto 100:cbbeb26dbd92 23 *
Kojto 100:cbbeb26dbd92 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Kojto 100:cbbeb26dbd92 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Kojto 100:cbbeb26dbd92 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Kojto 100:cbbeb26dbd92 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Kojto 100:cbbeb26dbd92 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Kojto 100:cbbeb26dbd92 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Kojto 100:cbbeb26dbd92 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Kojto 100:cbbeb26dbd92 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Kojto 100:cbbeb26dbd92 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Kojto 100:cbbeb26dbd92 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Kojto 100:cbbeb26dbd92 34 POSSIBILITY OF SUCH DAMAGE.
Kojto 100:cbbeb26dbd92 35 ---------------------------------------------------------------------------*/
Kojto 100:cbbeb26dbd92 36
Kojto 100:cbbeb26dbd92 37
Kojto 100:cbbeb26dbd92 38 #ifndef __CORE_CMINSTR_H
Kojto 100:cbbeb26dbd92 39 #define __CORE_CMINSTR_H
Kojto 100:cbbeb26dbd92 40
Kojto 100:cbbeb26dbd92 41
Kojto 100:cbbeb26dbd92 42 /* ########################## Core Instruction Access ######################### */
Kojto 100:cbbeb26dbd92 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Kojto 100:cbbeb26dbd92 44 Access to dedicated instructions
Kojto 100:cbbeb26dbd92 45 @{
Kojto 100:cbbeb26dbd92 46 */
Kojto 100:cbbeb26dbd92 47
Kojto 100:cbbeb26dbd92 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
Kojto 100:cbbeb26dbd92 49 /* ARM armcc specific functions */
Kojto 100:cbbeb26dbd92 50
Kojto 100:cbbeb26dbd92 51 #if (__ARMCC_VERSION < 400677)
Kojto 100:cbbeb26dbd92 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
Kojto 100:cbbeb26dbd92 53 #endif
Kojto 100:cbbeb26dbd92 54
Kojto 100:cbbeb26dbd92 55
Kojto 100:cbbeb26dbd92 56 /** \brief No Operation
Kojto 100:cbbeb26dbd92 57
Kojto 100:cbbeb26dbd92 58 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 100:cbbeb26dbd92 59 */
Kojto 100:cbbeb26dbd92 60 #define __NOP __nop
Kojto 100:cbbeb26dbd92 61
Kojto 100:cbbeb26dbd92 62
Kojto 100:cbbeb26dbd92 63 /** \brief Wait For Interrupt
Kojto 100:cbbeb26dbd92 64
Kojto 100:cbbeb26dbd92 65 Wait For Interrupt is a hint instruction that suspends execution
Kojto 100:cbbeb26dbd92 66 until one of a number of events occurs.
Kojto 100:cbbeb26dbd92 67 */
Kojto 100:cbbeb26dbd92 68 #define __WFI __wfi
Kojto 100:cbbeb26dbd92 69
Kojto 100:cbbeb26dbd92 70
Kojto 100:cbbeb26dbd92 71 /** \brief Wait For Event
Kojto 100:cbbeb26dbd92 72
Kojto 100:cbbeb26dbd92 73 Wait For Event is a hint instruction that permits the processor to enter
Kojto 100:cbbeb26dbd92 74 a low-power state until one of a number of events occurs.
Kojto 100:cbbeb26dbd92 75 */
Kojto 100:cbbeb26dbd92 76 #define __WFE __wfe
Kojto 100:cbbeb26dbd92 77
Kojto 100:cbbeb26dbd92 78
Kojto 100:cbbeb26dbd92 79 /** \brief Send Event
Kojto 100:cbbeb26dbd92 80
Kojto 100:cbbeb26dbd92 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 100:cbbeb26dbd92 82 */
Kojto 100:cbbeb26dbd92 83 #define __SEV __sev
Kojto 100:cbbeb26dbd92 84
Kojto 100:cbbeb26dbd92 85
Kojto 100:cbbeb26dbd92 86 /** \brief Instruction Synchronization Barrier
Kojto 100:cbbeb26dbd92 87
Kojto 100:cbbeb26dbd92 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 100:cbbeb26dbd92 89 so that all instructions following the ISB are fetched from cache or
Kojto 100:cbbeb26dbd92 90 memory, after the instruction has been completed.
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 97
Kojto 100:cbbeb26dbd92 98 /** \brief Data Synchronization Barrier
Kojto 100:cbbeb26dbd92 99
Kojto 100:cbbeb26dbd92 100 This function acts as a special kind of Data Memory Barrier.
Kojto 100:cbbeb26dbd92 101 It completes when all explicit memory accesses before this instruction complete.
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 108
Kojto 100:cbbeb26dbd92 109 /** \brief Data Memory Barrier
Kojto 100:cbbeb26dbd92 110
Kojto 100:cbbeb26dbd92 111 This function ensures the apparent order of the explicit memory operations before
Kojto 100:cbbeb26dbd92 112 and after the instruction, without ensuring their completion.
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 119
Kojto 100:cbbeb26dbd92 120 /** \brief Reverse byte order (32 bit)
Kojto 100:cbbeb26dbd92 121
Kojto 100:cbbeb26dbd92 122 This function reverses the byte order in integer value.
Kojto 100:cbbeb26dbd92 123
Kojto 100:cbbeb26dbd92 124 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 125 \return Reversed value
Kojto 100:cbbeb26dbd92 126 */
Kojto 100:cbbeb26dbd92 127 #define __REV __rev
Kojto 100:cbbeb26dbd92 128
Kojto 100:cbbeb26dbd92 129
Kojto 100:cbbeb26dbd92 130 /** \brief Reverse byte order (16 bit)
Kojto 100:cbbeb26dbd92 131
Kojto 100:cbbeb26dbd92 132 This function reverses the byte order in two unsigned short values.
Kojto 100:cbbeb26dbd92 133
Kojto 100:cbbeb26dbd92 134 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 135 \return Reversed value
Kojto 100:cbbeb26dbd92 136 */
Kojto 100:cbbeb26dbd92 137 #ifndef __NO_EMBEDDED_ASM
Kojto 100:cbbeb26dbd92 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
Kojto 100:cbbeb26dbd92 139 {
Kojto 100:cbbeb26dbd92 140 rev16 r0, r0
Kojto 100:cbbeb26dbd92 141 bx lr
Kojto 100:cbbeb26dbd92 142 }
Kojto 100:cbbeb26dbd92 143 #endif
Kojto 100:cbbeb26dbd92 144
Kojto 100:cbbeb26dbd92 145 /** \brief Reverse byte order in signed short value
Kojto 100:cbbeb26dbd92 146
Kojto 100:cbbeb26dbd92 147 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 100:cbbeb26dbd92 148
Kojto 100:cbbeb26dbd92 149 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 150 \return Reversed value
Kojto 100:cbbeb26dbd92 151 */
Kojto 100:cbbeb26dbd92 152 #ifndef __NO_EMBEDDED_ASM
Kojto 100:cbbeb26dbd92 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
Kojto 100:cbbeb26dbd92 154 {
Kojto 100:cbbeb26dbd92 155 revsh r0, r0
Kojto 100:cbbeb26dbd92 156 bx lr
Kojto 100:cbbeb26dbd92 157 }
Kojto 100:cbbeb26dbd92 158 #endif
Kojto 100:cbbeb26dbd92 159
Kojto 100:cbbeb26dbd92 160
Kojto 100:cbbeb26dbd92 161 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 100:cbbeb26dbd92 162
Kojto 100:cbbeb26dbd92 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 100:cbbeb26dbd92 164
Kojto 100:cbbeb26dbd92 165 \param [in] value Value to rotate
Kojto 100:cbbeb26dbd92 166 \param [in] value Number of Bits to rotate
Kojto 100:cbbeb26dbd92 167 \return Rotated value
Kojto 100:cbbeb26dbd92 168 */
Kojto 100:cbbeb26dbd92 169 #define __ROR __ror
Kojto 100:cbbeb26dbd92 170
Kojto 100:cbbeb26dbd92 171
Kojto 100:cbbeb26dbd92 172 /** \brief Breakpoint
Kojto 100:cbbeb26dbd92 173
Kojto 100:cbbeb26dbd92 174 This function causes the processor to enter Debug state.
Kojto 100:cbbeb26dbd92 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 100:cbbeb26dbd92 176
Kojto 100:cbbeb26dbd92 177 \param [in] value is ignored by the processor.
Kojto 100:cbbeb26dbd92 178 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 100:cbbeb26dbd92 179 */
Kojto 100:cbbeb26dbd92 180 #define __BKPT(value) __breakpoint(value)
Kojto 100:cbbeb26dbd92 181
Kojto 100:cbbeb26dbd92 182
Kojto 100:cbbeb26dbd92 183 /** \brief Reverse bit order of value
Kojto 100:cbbeb26dbd92 184
Kojto 100:cbbeb26dbd92 185 This function reverses the bit order of the given value.
Kojto 100:cbbeb26dbd92 186
Kojto 100:cbbeb26dbd92 187 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 188 \return Reversed value
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 222
Kojto 100:cbbeb26dbd92 223 /** \brief LDR Exclusive (8 bit)
Kojto 100:cbbeb26dbd92 224
Kojto 110:165afa46840b 225 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 100:cbbeb26dbd92 226
Kojto 100:cbbeb26dbd92 227 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 228 \return value of type uint8_t at (*ptr)
Kojto 100:cbbeb26dbd92 229 */
Kojto 100:cbbeb26dbd92 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
Kojto 100:cbbeb26dbd92 231
Kojto 100:cbbeb26dbd92 232
Kojto 100:cbbeb26dbd92 233 /** \brief LDR Exclusive (16 bit)
Kojto 100:cbbeb26dbd92 234
Kojto 110:165afa46840b 235 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 100:cbbeb26dbd92 236
Kojto 100:cbbeb26dbd92 237 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 238 \return value of type uint16_t at (*ptr)
Kojto 100:cbbeb26dbd92 239 */
Kojto 100:cbbeb26dbd92 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
Kojto 100:cbbeb26dbd92 241
Kojto 100:cbbeb26dbd92 242
Kojto 100:cbbeb26dbd92 243 /** \brief LDR Exclusive (32 bit)
Kojto 100:cbbeb26dbd92 244
Kojto 110:165afa46840b 245 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 100:cbbeb26dbd92 246
Kojto 100:cbbeb26dbd92 247 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 248 \return value of type uint32_t at (*ptr)
Kojto 100:cbbeb26dbd92 249 */
Kojto 100:cbbeb26dbd92 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
Kojto 100:cbbeb26dbd92 251
Kojto 100:cbbeb26dbd92 252
Kojto 100:cbbeb26dbd92 253 /** \brief STR Exclusive (8 bit)
Kojto 100:cbbeb26dbd92 254
Kojto 110:165afa46840b 255 This function executes a exclusive STR instruction for 8 bit values.
Kojto 100:cbbeb26dbd92 256
Kojto 100:cbbeb26dbd92 257 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 258 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 259 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 260 \return 1 Function failed
Kojto 100:cbbeb26dbd92 261 */
Kojto 100:cbbeb26dbd92 262 #define __STREXB(value, ptr) __strex(value, ptr)
Kojto 100:cbbeb26dbd92 263
Kojto 100:cbbeb26dbd92 264
Kojto 100:cbbeb26dbd92 265 /** \brief STR Exclusive (16 bit)
Kojto 100:cbbeb26dbd92 266
Kojto 110:165afa46840b 267 This function executes a exclusive STR instruction for 16 bit values.
Kojto 100:cbbeb26dbd92 268
Kojto 100:cbbeb26dbd92 269 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 270 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 271 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 272 \return 1 Function failed
Kojto 100:cbbeb26dbd92 273 */
Kojto 100:cbbeb26dbd92 274 #define __STREXH(value, ptr) __strex(value, ptr)
Kojto 100:cbbeb26dbd92 275
Kojto 100:cbbeb26dbd92 276
Kojto 100:cbbeb26dbd92 277 /** \brief STR Exclusive (32 bit)
Kojto 100:cbbeb26dbd92 278
Kojto 110:165afa46840b 279 This function executes a exclusive STR instruction for 32 bit values.
Kojto 100:cbbeb26dbd92 280
Kojto 100:cbbeb26dbd92 281 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 282 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 283 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 284 \return 1 Function failed
Kojto 100:cbbeb26dbd92 285 */
Kojto 100:cbbeb26dbd92 286 #define __STREXW(value, ptr) __strex(value, ptr)
Kojto 100:cbbeb26dbd92 287
Kojto 100:cbbeb26dbd92 288
Kojto 100:cbbeb26dbd92 289 /** \brief Remove the exclusive lock
Kojto 100:cbbeb26dbd92 290
Kojto 100:cbbeb26dbd92 291 This function removes the exclusive lock which is created by LDREX.
Kojto 100:cbbeb26dbd92 292
Kojto 100:cbbeb26dbd92 293 */
Kojto 100:cbbeb26dbd92 294 #define __CLREX __clrex
Kojto 100:cbbeb26dbd92 295
Kojto 100:cbbeb26dbd92 296
Kojto 100:cbbeb26dbd92 297 /** \brief Signed Saturate
Kojto 100:cbbeb26dbd92 298
Kojto 100:cbbeb26dbd92 299 This function saturates a signed value.
Kojto 100:cbbeb26dbd92 300
Kojto 100:cbbeb26dbd92 301 \param [in] value Value to be saturated
Kojto 100:cbbeb26dbd92 302 \param [in] sat Bit position to saturate to (1..32)
Kojto 100:cbbeb26dbd92 303 \return Saturated value
Kojto 100:cbbeb26dbd92 304 */
Kojto 100:cbbeb26dbd92 305 #define __SSAT __ssat
Kojto 100:cbbeb26dbd92 306
Kojto 100:cbbeb26dbd92 307
Kojto 100:cbbeb26dbd92 308 /** \brief Unsigned Saturate
Kojto 100:cbbeb26dbd92 309
Kojto 100:cbbeb26dbd92 310 This function saturates an unsigned value.
Kojto 100:cbbeb26dbd92 311
Kojto 100:cbbeb26dbd92 312 \param [in] value Value to be saturated
Kojto 100:cbbeb26dbd92 313 \param [in] sat Bit position to saturate to (0..31)
Kojto 100:cbbeb26dbd92 314 \return Saturated value
Kojto 100:cbbeb26dbd92 315 */
Kojto 100:cbbeb26dbd92 316 #define __USAT __usat
Kojto 100:cbbeb26dbd92 317
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 354
Kojto 100:cbbeb26dbd92 355
Kojto 110:165afa46840b 356 /** \brief LDRT Unprivileged (32 bit)
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 374
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 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 100:cbbeb26dbd92 396
Kojto 100:cbbeb26dbd92 397
Kojto 100:cbbeb26dbd92 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
Kojto 100:cbbeb26dbd92 399 /* GNU gcc specific functions */
Kojto 100:cbbeb26dbd92 400
Kojto 100:cbbeb26dbd92 401 /* Define macros for porting to both thumb1 and thumb2.
Kojto 100:cbbeb26dbd92 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
Kojto 100:cbbeb26dbd92 403 * Otherwise, use general registers, specified by constrant "r" */
Kojto 100:cbbeb26dbd92 404 #if defined (__thumb__) && !defined (__thumb2__)
Kojto 100:cbbeb26dbd92 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
Kojto 100:cbbeb26dbd92 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
Kojto 100:cbbeb26dbd92 407 #else
Kojto 100:cbbeb26dbd92 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
Kojto 100:cbbeb26dbd92 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
Kojto 100:cbbeb26dbd92 410 #endif
Kojto 100:cbbeb26dbd92 411
Kojto 100:cbbeb26dbd92 412 /** \brief No Operation
Kojto 100:cbbeb26dbd92 413
Kojto 100:cbbeb26dbd92 414 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 100:cbbeb26dbd92 415 */
Kojto 110:165afa46840b 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
Kojto 100:cbbeb26dbd92 417 {
Kojto 100:cbbeb26dbd92 418 __ASM volatile ("nop");
Kojto 100:cbbeb26dbd92 419 }
Kojto 100:cbbeb26dbd92 420
Kojto 100:cbbeb26dbd92 421
Kojto 100:cbbeb26dbd92 422 /** \brief Wait For Interrupt
Kojto 100:cbbeb26dbd92 423
Kojto 100:cbbeb26dbd92 424 Wait For Interrupt is a hint instruction that suspends execution
Kojto 100:cbbeb26dbd92 425 until one of a number of events occurs.
Kojto 100:cbbeb26dbd92 426 */
Kojto 110:165afa46840b 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
Kojto 100:cbbeb26dbd92 428 {
Kojto 100:cbbeb26dbd92 429 __ASM volatile ("wfi");
Kojto 100:cbbeb26dbd92 430 }
Kojto 100:cbbeb26dbd92 431
Kojto 100:cbbeb26dbd92 432
Kojto 100:cbbeb26dbd92 433 /** \brief Wait For Event
Kojto 100:cbbeb26dbd92 434
Kojto 100:cbbeb26dbd92 435 Wait For Event is a hint instruction that permits the processor to enter
Kojto 100:cbbeb26dbd92 436 a low-power state until one of a number of events occurs.
Kojto 100:cbbeb26dbd92 437 */
Kojto 110:165afa46840b 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
Kojto 100:cbbeb26dbd92 439 {
Kojto 100:cbbeb26dbd92 440 __ASM volatile ("wfe");
Kojto 100:cbbeb26dbd92 441 }
Kojto 100:cbbeb26dbd92 442
Kojto 100:cbbeb26dbd92 443
Kojto 100:cbbeb26dbd92 444 /** \brief Send Event
Kojto 100:cbbeb26dbd92 445
Kojto 100:cbbeb26dbd92 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 100:cbbeb26dbd92 447 */
Kojto 110:165afa46840b 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
Kojto 100:cbbeb26dbd92 449 {
Kojto 100:cbbeb26dbd92 450 __ASM volatile ("sev");
Kojto 100:cbbeb26dbd92 451 }
Kojto 100:cbbeb26dbd92 452
Kojto 100:cbbeb26dbd92 453
Kojto 100:cbbeb26dbd92 454 /** \brief Instruction Synchronization Barrier
Kojto 100:cbbeb26dbd92 455
Kojto 100:cbbeb26dbd92 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 100:cbbeb26dbd92 457 so that all instructions following the ISB are fetched from cache or
Kojto 100:cbbeb26dbd92 458 memory, after the instruction has been completed.
Kojto 100:cbbeb26dbd92 459 */
Kojto 110:165afa46840b 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
Kojto 100:cbbeb26dbd92 461 {
Kojto 110:165afa46840b 462 __ASM volatile ("isb 0xF":::"memory");
Kojto 100:cbbeb26dbd92 463 }
Kojto 100:cbbeb26dbd92 464
Kojto 100:cbbeb26dbd92 465
Kojto 100:cbbeb26dbd92 466 /** \brief Data Synchronization Barrier
Kojto 100:cbbeb26dbd92 467
Kojto 100:cbbeb26dbd92 468 This function acts as a special kind of Data Memory Barrier.
Kojto 100:cbbeb26dbd92 469 It completes when all explicit memory accesses before this instruction complete.
Kojto 100:cbbeb26dbd92 470 */
Kojto 110:165afa46840b 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
Kojto 100:cbbeb26dbd92 472 {
Kojto 110:165afa46840b 473 __ASM volatile ("dsb 0xF":::"memory");
Kojto 100:cbbeb26dbd92 474 }
Kojto 100:cbbeb26dbd92 475
Kojto 100:cbbeb26dbd92 476
Kojto 100:cbbeb26dbd92 477 /** \brief Data Memory Barrier
Kojto 100:cbbeb26dbd92 478
Kojto 100:cbbeb26dbd92 479 This function ensures the apparent order of the explicit memory operations before
Kojto 100:cbbeb26dbd92 480 and after the instruction, without ensuring their completion.
Kojto 100:cbbeb26dbd92 481 */
Kojto 110:165afa46840b 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
Kojto 100:cbbeb26dbd92 483 {
Kojto 110:165afa46840b 484 __ASM volatile ("dmb 0xF":::"memory");
Kojto 100:cbbeb26dbd92 485 }
Kojto 100:cbbeb26dbd92 486
Kojto 100:cbbeb26dbd92 487
Kojto 100:cbbeb26dbd92 488 /** \brief Reverse byte order (32 bit)
Kojto 100:cbbeb26dbd92 489
Kojto 100:cbbeb26dbd92 490 This function reverses the byte order in integer value.
Kojto 100:cbbeb26dbd92 491
Kojto 100:cbbeb26dbd92 492 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 493 \return Reversed value
Kojto 100:cbbeb26dbd92 494 */
Kojto 110:165afa46840b 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
Kojto 100:cbbeb26dbd92 496 {
Kojto 100:cbbeb26dbd92 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
Kojto 100:cbbeb26dbd92 498 return __builtin_bswap32(value);
Kojto 100:cbbeb26dbd92 499 #else
Kojto 100:cbbeb26dbd92 500 uint32_t result;
Kojto 100:cbbeb26dbd92 501
Kojto 100:cbbeb26dbd92 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 100:cbbeb26dbd92 503 return(result);
Kojto 100:cbbeb26dbd92 504 #endif
Kojto 100:cbbeb26dbd92 505 }
Kojto 100:cbbeb26dbd92 506
Kojto 100:cbbeb26dbd92 507
Kojto 100:cbbeb26dbd92 508 /** \brief Reverse byte order (16 bit)
Kojto 100:cbbeb26dbd92 509
Kojto 100:cbbeb26dbd92 510 This function reverses the byte order in two unsigned short values.
Kojto 100:cbbeb26dbd92 511
Kojto 100:cbbeb26dbd92 512 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 513 \return Reversed value
Kojto 100:cbbeb26dbd92 514 */
Kojto 110:165afa46840b 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
Kojto 100:cbbeb26dbd92 516 {
Kojto 100:cbbeb26dbd92 517 uint32_t result;
Kojto 100:cbbeb26dbd92 518
Kojto 100:cbbeb26dbd92 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 100:cbbeb26dbd92 520 return(result);
Kojto 100:cbbeb26dbd92 521 }
Kojto 100:cbbeb26dbd92 522
Kojto 100:cbbeb26dbd92 523
Kojto 100:cbbeb26dbd92 524 /** \brief Reverse byte order in signed short value
Kojto 100:cbbeb26dbd92 525
Kojto 100:cbbeb26dbd92 526 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 100:cbbeb26dbd92 527
Kojto 100:cbbeb26dbd92 528 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 529 \return Reversed value
Kojto 100:cbbeb26dbd92 530 */
Kojto 110:165afa46840b 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
Kojto 100:cbbeb26dbd92 532 {
Kojto 100:cbbeb26dbd92 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 100:cbbeb26dbd92 534 return (short)__builtin_bswap16(value);
Kojto 100:cbbeb26dbd92 535 #else
Kojto 100:cbbeb26dbd92 536 uint32_t result;
Kojto 100:cbbeb26dbd92 537
Kojto 100:cbbeb26dbd92 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 100:cbbeb26dbd92 539 return(result);
Kojto 100:cbbeb26dbd92 540 #endif
Kojto 100:cbbeb26dbd92 541 }
Kojto 100:cbbeb26dbd92 542
Kojto 100:cbbeb26dbd92 543
Kojto 100:cbbeb26dbd92 544 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 100:cbbeb26dbd92 545
Kojto 100:cbbeb26dbd92 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 100:cbbeb26dbd92 547
Kojto 100:cbbeb26dbd92 548 \param [in] value Value to rotate
Kojto 100:cbbeb26dbd92 549 \param [in] value Number of Bits to rotate
Kojto 100:cbbeb26dbd92 550 \return Rotated value
Kojto 100:cbbeb26dbd92 551 */
Kojto 110:165afa46840b 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
Kojto 100:cbbeb26dbd92 553 {
Kojto 110:165afa46840b 554 return (op1 >> op2) | (op1 << (32 - op2));
Kojto 100:cbbeb26dbd92 555 }
Kojto 100:cbbeb26dbd92 556
Kojto 100:cbbeb26dbd92 557
Kojto 100:cbbeb26dbd92 558 /** \brief Breakpoint
Kojto 100:cbbeb26dbd92 559
Kojto 100:cbbeb26dbd92 560 This function causes the processor to enter Debug state.
Kojto 100:cbbeb26dbd92 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 100:cbbeb26dbd92 562
Kojto 100:cbbeb26dbd92 563 \param [in] value is ignored by the processor.
Kojto 100:cbbeb26dbd92 564 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 100:cbbeb26dbd92 565 */
Kojto 100:cbbeb26dbd92 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
Kojto 100:cbbeb26dbd92 567
Kojto 100:cbbeb26dbd92 568
Kojto 100:cbbeb26dbd92 569 /** \brief Reverse bit order of value
Kojto 100:cbbeb26dbd92 570
Kojto 100:cbbeb26dbd92 571 This function reverses the bit order of the given value.
Kojto 100:cbbeb26dbd92 572
Kojto 100:cbbeb26dbd92 573 \param [in] value Value to reverse
Kojto 100:cbbeb26dbd92 574 \return Reversed value
Kojto 100:cbbeb26dbd92 575 */
Kojto 110:165afa46840b 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 100:cbbeb26dbd92 577 {
Kojto 100:cbbeb26dbd92 578 uint32_t result;
Kojto 100:cbbeb26dbd92 579
Kojto 110:165afa46840b 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 595 }
Kojto 100:cbbeb26dbd92 596
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 610 /** \brief LDR Exclusive (8 bit)
Kojto 100:cbbeb26dbd92 611
Kojto 110:165afa46840b 612 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 100:cbbeb26dbd92 613
Kojto 100:cbbeb26dbd92 614 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 615 \return value of type uint8_t at (*ptr)
Kojto 100:cbbeb26dbd92 616 */
Kojto 110:165afa46840b 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
Kojto 100:cbbeb26dbd92 618 {
Kojto 100:cbbeb26dbd92 619 uint32_t result;
Kojto 100:cbbeb26dbd92 620
Kojto 100:cbbeb26dbd92 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 100:cbbeb26dbd92 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 100:cbbeb26dbd92 623 #else
Kojto 100:cbbeb26dbd92 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 100:cbbeb26dbd92 625 accepted by assembler. So has to use following less efficient pattern.
Kojto 100:cbbeb26dbd92 626 */
Kojto 100:cbbeb26dbd92 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 100:cbbeb26dbd92 628 #endif
Kojto 110:165afa46840b 629 return ((uint8_t) result); /* Add explicit type cast here */
Kojto 100:cbbeb26dbd92 630 }
Kojto 100:cbbeb26dbd92 631
Kojto 100:cbbeb26dbd92 632
Kojto 100:cbbeb26dbd92 633 /** \brief LDR Exclusive (16 bit)
Kojto 100:cbbeb26dbd92 634
Kojto 110:165afa46840b 635 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 100:cbbeb26dbd92 636
Kojto 100:cbbeb26dbd92 637 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 638 \return value of type uint16_t at (*ptr)
Kojto 100:cbbeb26dbd92 639 */
Kojto 110:165afa46840b 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
Kojto 100:cbbeb26dbd92 641 {
Kojto 100:cbbeb26dbd92 642 uint32_t result;
Kojto 100:cbbeb26dbd92 643
Kojto 100:cbbeb26dbd92 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 100:cbbeb26dbd92 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 100:cbbeb26dbd92 646 #else
Kojto 100:cbbeb26dbd92 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 100:cbbeb26dbd92 648 accepted by assembler. So has to use following less efficient pattern.
Kojto 100:cbbeb26dbd92 649 */
Kojto 100:cbbeb26dbd92 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 100:cbbeb26dbd92 651 #endif
Kojto 110:165afa46840b 652 return ((uint16_t) result); /* Add explicit type cast here */
Kojto 100:cbbeb26dbd92 653 }
Kojto 100:cbbeb26dbd92 654
Kojto 100:cbbeb26dbd92 655
Kojto 100:cbbeb26dbd92 656 /** \brief LDR Exclusive (32 bit)
Kojto 100:cbbeb26dbd92 657
Kojto 110:165afa46840b 658 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 100:cbbeb26dbd92 659
Kojto 100:cbbeb26dbd92 660 \param [in] ptr Pointer to data
Kojto 100:cbbeb26dbd92 661 \return value of type uint32_t at (*ptr)
Kojto 100:cbbeb26dbd92 662 */
Kojto 110:165afa46840b 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
Kojto 100:cbbeb26dbd92 664 {
Kojto 100:cbbeb26dbd92 665 uint32_t result;
Kojto 100:cbbeb26dbd92 666
Kojto 100:cbbeb26dbd92 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 100:cbbeb26dbd92 668 return(result);
Kojto 100:cbbeb26dbd92 669 }
Kojto 100:cbbeb26dbd92 670
Kojto 100:cbbeb26dbd92 671
Kojto 100:cbbeb26dbd92 672 /** \brief STR Exclusive (8 bit)
Kojto 100:cbbeb26dbd92 673
Kojto 110:165afa46840b 674 This function executes a exclusive STR instruction for 8 bit values.
Kojto 100:cbbeb26dbd92 675
Kojto 100:cbbeb26dbd92 676 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 677 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 678 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 679 \return 1 Function failed
Kojto 100:cbbeb26dbd92 680 */
Kojto 110:165afa46840b 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
Kojto 100:cbbeb26dbd92 682 {
Kojto 100:cbbeb26dbd92 683 uint32_t result;
Kojto 100:cbbeb26dbd92 684
Kojto 110:165afa46840b 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 100:cbbeb26dbd92 686 return(result);
Kojto 100:cbbeb26dbd92 687 }
Kojto 100:cbbeb26dbd92 688
Kojto 100:cbbeb26dbd92 689
Kojto 100:cbbeb26dbd92 690 /** \brief STR Exclusive (16 bit)
Kojto 100:cbbeb26dbd92 691
Kojto 110:165afa46840b 692 This function executes a exclusive STR instruction for 16 bit values.
Kojto 100:cbbeb26dbd92 693
Kojto 100:cbbeb26dbd92 694 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 695 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 696 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 697 \return 1 Function failed
Kojto 100:cbbeb26dbd92 698 */
Kojto 110:165afa46840b 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
Kojto 100:cbbeb26dbd92 700 {
Kojto 100:cbbeb26dbd92 701 uint32_t result;
Kojto 100:cbbeb26dbd92 702
Kojto 110:165afa46840b 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 100:cbbeb26dbd92 704 return(result);
Kojto 100:cbbeb26dbd92 705 }
Kojto 100:cbbeb26dbd92 706
Kojto 100:cbbeb26dbd92 707
Kojto 100:cbbeb26dbd92 708 /** \brief STR Exclusive (32 bit)
Kojto 100:cbbeb26dbd92 709
Kojto 110:165afa46840b 710 This function executes a exclusive STR instruction for 32 bit values.
Kojto 100:cbbeb26dbd92 711
Kojto 100:cbbeb26dbd92 712 \param [in] value Value to store
Kojto 100:cbbeb26dbd92 713 \param [in] ptr Pointer to location
Kojto 100:cbbeb26dbd92 714 \return 0 Function succeeded
Kojto 100:cbbeb26dbd92 715 \return 1 Function failed
Kojto 100:cbbeb26dbd92 716 */
Kojto 110:165afa46840b 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
Kojto 100:cbbeb26dbd92 718 {
Kojto 100:cbbeb26dbd92 719 uint32_t result;
Kojto 100:cbbeb26dbd92 720
Kojto 100:cbbeb26dbd92 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 100:cbbeb26dbd92 722 return(result);
Kojto 100:cbbeb26dbd92 723 }
Kojto 100:cbbeb26dbd92 724
Kojto 100:cbbeb26dbd92 725
Kojto 100:cbbeb26dbd92 726 /** \brief Remove the exclusive lock
Kojto 100:cbbeb26dbd92 727
Kojto 100:cbbeb26dbd92 728 This function removes the exclusive lock which is created by LDREX.
Kojto 100:cbbeb26dbd92 729
Kojto 100:cbbeb26dbd92 730 */
Kojto 110:165afa46840b 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
Kojto 100:cbbeb26dbd92 732 {
Kojto 100:cbbeb26dbd92 733 __ASM volatile ("clrex" ::: "memory");
Kojto 100:cbbeb26dbd92 734 }
Kojto 100:cbbeb26dbd92 735
Kojto 100:cbbeb26dbd92 736
Kojto 100:cbbeb26dbd92 737 /** \brief Signed Saturate
Kojto 100:cbbeb26dbd92 738
Kojto 100:cbbeb26dbd92 739 This function saturates a signed value.
Kojto 100:cbbeb26dbd92 740
Kojto 100:cbbeb26dbd92 741 \param [in] value Value to be saturated
Kojto 100:cbbeb26dbd92 742 \param [in] sat Bit position to saturate to (1..32)
Kojto 100:cbbeb26dbd92 743 \return Saturated value
Kojto 100:cbbeb26dbd92 744 */
Kojto 100:cbbeb26dbd92 745 #define __SSAT(ARG1,ARG2) \
Kojto 100:cbbeb26dbd92 746 ({ \
Kojto 100:cbbeb26dbd92 747 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 100:cbbeb26dbd92 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 100:cbbeb26dbd92 749 __RES; \
Kojto 100:cbbeb26dbd92 750 })
Kojto 100:cbbeb26dbd92 751
Kojto 100:cbbeb26dbd92 752
Kojto 100:cbbeb26dbd92 753 /** \brief Unsigned Saturate
Kojto 100:cbbeb26dbd92 754
Kojto 100:cbbeb26dbd92 755 This function saturates an unsigned value.
Kojto 100:cbbeb26dbd92 756
Kojto 100:cbbeb26dbd92 757 \param [in] value Value to be saturated
Kojto 100:cbbeb26dbd92 758 \param [in] sat Bit position to saturate to (0..31)
Kojto 100:cbbeb26dbd92 759 \return Saturated value
Kojto 100:cbbeb26dbd92 760 */
Kojto 100:cbbeb26dbd92 761 #define __USAT(ARG1,ARG2) \
Kojto 100:cbbeb26dbd92 762 ({ \
Kojto 100:cbbeb26dbd92 763 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 100:cbbeb26dbd92 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 100:cbbeb26dbd92 765 __RES; \
Kojto 100:cbbeb26dbd92 766 })
Kojto 100:cbbeb26dbd92 767
Kojto 100:cbbeb26dbd92 768
Kojto 110:165afa46840b 769 /** \brief Rotate Right with Extend (32 bit)
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 773
Kojto 110:165afa46840b 774 \param [in] value Value to rotate
Kojto 110:165afa46840b 775 \return Rotated value
Kojto 100:cbbeb26dbd92 776 */
Kojto 110:165afa46840b 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
Kojto 100:cbbeb26dbd92 778 {
Kojto 110:165afa46840b 779 uint32_t result;
Kojto 100:cbbeb26dbd92 780
Kojto 110:165afa46840b 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 100:cbbeb26dbd92 782 return(result);
Kojto 100:cbbeb26dbd92 783 }
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 830
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 897
Kojto 100:cbbeb26dbd92 898
Kojto 100:cbbeb26dbd92 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
Kojto 100:cbbeb26dbd92 900 /* TASKING carm specific functions */
Kojto 100:cbbeb26dbd92 901 /*
Kojto 100:cbbeb26dbd92 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
Kojto 100:cbbeb26dbd92 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
Kojto 100:cbbeb26dbd92 904 * Including the CMSIS ones.
Kojto 100:cbbeb26dbd92 905 */
Kojto 100:cbbeb26dbd92 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 100:cbbeb26dbd92 912 #endif
Kojto 100:cbbeb26dbd92 913
Kojto 100:cbbeb26dbd92 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
Kojto 100:cbbeb26dbd92 915
Kojto 100:cbbeb26dbd92 916 #endif /* __CORE_CMINSTR_H */