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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_TEENSY3_1/core_cmInstr.h@136:ef9c61f8c49f, 2017-02-14 (annotated)

Committer:
Kojto
Date:
Tue Feb 14 11:24:20 2017 +0000
Revision:
136:ef9c61f8c49f
Parent:
110:165afa46840b 
Release 136 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3432: Target STM USBHOST support https://github.com/ARMmbed/mbed-os/pull/3432

3181: NUCLEO_F207ZG extending PeripheralPins.c: all available alternate functions can be used now https://github.com/ARMmbed/mbed-os/pull/3181

3626: NUCLEO_F412ZG : Add USB Device +Host https://github.com/ARMmbed/mbed-os/pull/3626

3628: Fix warnings https://github.com/ARMmbed/mbed-os/pull/3628

3629: STM32: L0 LL layer https://github.com/ARMmbed/mbed-os/pull/3629

3632: IDE Export support for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3632

3642: Missing IRQ pin fix for platform VK_RZ_A1H https://github.com/ARMmbed/mbed-os/pull/3642

3664: Fix ncs36510 sleep definitions https://github.com/ARMmbed/mbed-os/pull/3664

3655: [STM32F4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3655

3657: [STM32L4] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3657

3658: [STM32F3] Modify folder structure https://github.com/ARMmbed/mbed-os/pull/3658

3685: STM32: I2C: reset state machine https://github.com/ARMmbed/mbed-os/pull/3685

3692: uVisor: Standardize available legacy heap and stack https://github.com/ARMmbed/mbed-os/pull/3692

3621: Fix for #2884, LPC824: export to LPCXpresso, target running with wron https://github.com/ARMmbed/mbed-os/pull/3621

3649: [STM32F7] Modify folder structure  https://github.com/ARMmbed/mbed-os/pull/3649

3695: Enforce device_name is valid in targets.json https://github.com/ARMmbed/mbed-os/pull/3695

3723: NCS36510: spi_format function bug fix https://github.com/ARMmbed/mbed-os/pull/3723

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 93:e188a91d3eaa 1 /**************************************************************************//**
Kojto 93:e188a91d3eaa 2 * @file core_cmInstr.h
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 6 *
Kojto 93:e188a91d3eaa 7 * @note
Kojto 93:e188a91d3eaa 8 *
Kojto 93:e188a91d3eaa 9 ******************************************************************************/
Kojto 110:165afa46840b 10 /* Copyright (c) 2009 - 2014 ARM LIMITED
Kojto 93:e188a91d3eaa 11
Kojto 93:e188a91d3eaa 12 All rights reserved.
Kojto 93:e188a91d3eaa 13 Redistribution and use in source and binary forms, with or without
Kojto 93:e188a91d3eaa 14 modification, are permitted provided that the following conditions are met:
Kojto 93:e188a91d3eaa 15 - Redistributions of source code must retain the above copyright
Kojto 93:e188a91d3eaa 16 notice, this list of conditions and the following disclaimer.
Kojto 93:e188a91d3eaa 17 - Redistributions in binary form must reproduce the above copyright
Kojto 93:e188a91d3eaa 18 notice, this list of conditions and the following disclaimer in the
Kojto 93:e188a91d3eaa 19 documentation and/or other materials provided with the distribution.
Kojto 93:e188a91d3eaa 20 - Neither the name of ARM nor the names of its contributors may be used
Kojto 93:e188a91d3eaa 21 to endorse or promote products derived from this software without
Kojto 93:e188a91d3eaa 22 specific prior written permission.
Kojto 93:e188a91d3eaa 23 *
Kojto 93:e188a91d3eaa 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Kojto 93:e188a91d3eaa 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Kojto 93:e188a91d3eaa 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Kojto 93:e188a91d3eaa 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
Kojto 93:e188a91d3eaa 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Kojto 93:e188a91d3eaa 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Kojto 93:e188a91d3eaa 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Kojto 93:e188a91d3eaa 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Kojto 93:e188a91d3eaa 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Kojto 93:e188a91d3eaa 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Kojto 93:e188a91d3eaa 34 POSSIBILITY OF SUCH DAMAGE.
Kojto 93:e188a91d3eaa 35 ---------------------------------------------------------------------------*/
Kojto 93:e188a91d3eaa 36
Kojto 93:e188a91d3eaa 37
Kojto 93:e188a91d3eaa 38 #ifndef __CORE_CMINSTR_H
Kojto 93:e188a91d3eaa 39 #define __CORE_CMINSTR_H
Kojto 93:e188a91d3eaa 40
Kojto 93:e188a91d3eaa 41
Kojto 93:e188a91d3eaa 42 /* ########################## Core Instruction Access ######################### */
Kojto 93:e188a91d3eaa 43 /** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Kojto 93:e188a91d3eaa 44 Access to dedicated instructions
Kojto 93:e188a91d3eaa 45 @{
Kojto 93:e188a91d3eaa 46 */
Kojto 93:e188a91d3eaa 47
Kojto 93:e188a91d3eaa 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
Kojto 93:e188a91d3eaa 49 /* ARM armcc specific functions */
Kojto 93:e188a91d3eaa 50
Kojto 93:e188a91d3eaa 51 #if (__ARMCC_VERSION < 400677)
Kojto 93:e188a91d3eaa 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
Kojto 93:e188a91d3eaa 53 #endif
Kojto 93:e188a91d3eaa 54
Kojto 93:e188a91d3eaa 55
Kojto 93:e188a91d3eaa 56 /** \brief No Operation
Kojto 93:e188a91d3eaa 57
Kojto 93:e188a91d3eaa 58 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 93:e188a91d3eaa 59 */
Kojto 93:e188a91d3eaa 60 #define __NOP __nop
Kojto 93:e188a91d3eaa 61
Kojto 93:e188a91d3eaa 62
Kojto 93:e188a91d3eaa 63 /** \brief Wait For Interrupt
Kojto 93:e188a91d3eaa 64
Kojto 93:e188a91d3eaa 65 Wait For Interrupt is a hint instruction that suspends execution
Kojto 93:e188a91d3eaa 66 until one of a number of events occurs.
Kojto 93:e188a91d3eaa 67 */
Kojto 93:e188a91d3eaa 68 #define __WFI __wfi
Kojto 93:e188a91d3eaa 69
Kojto 93:e188a91d3eaa 70
Kojto 93:e188a91d3eaa 71 /** \brief Wait For Event
Kojto 93:e188a91d3eaa 72
Kojto 93:e188a91d3eaa 73 Wait For Event is a hint instruction that permits the processor to enter
Kojto 93:e188a91d3eaa 74 a low-power state until one of a number of events occurs.
Kojto 93:e188a91d3eaa 75 */
Kojto 93:e188a91d3eaa 76 #define __WFE __wfe
Kojto 93:e188a91d3eaa 77
Kojto 93:e188a91d3eaa 78
Kojto 93:e188a91d3eaa 79 /** \brief Send Event
Kojto 93:e188a91d3eaa 80
Kojto 93:e188a91d3eaa 81 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 93:e188a91d3eaa 82 */
Kojto 93:e188a91d3eaa 83 #define __SEV __sev
Kojto 93:e188a91d3eaa 84
Kojto 93:e188a91d3eaa 85
Kojto 93:e188a91d3eaa 86 /** \brief Instruction Synchronization Barrier
Kojto 93:e188a91d3eaa 87
Kojto 93:e188a91d3eaa 88 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 93:e188a91d3eaa 89 so that all instructions following the ISB are fetched from cache or
Kojto 93:e188a91d3eaa 90 memory, after the instruction has been completed.
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 97
Kojto 93:e188a91d3eaa 98 /** \brief Data Synchronization Barrier
Kojto 93:e188a91d3eaa 99
Kojto 93:e188a91d3eaa 100 This function acts as a special kind of Data Memory Barrier.
Kojto 93:e188a91d3eaa 101 It completes when all explicit memory accesses before this instruction complete.
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 108
Kojto 93:e188a91d3eaa 109 /** \brief Data Memory Barrier
Kojto 93:e188a91d3eaa 110
Kojto 93:e188a91d3eaa 111 This function ensures the apparent order of the explicit memory operations before
Kojto 93:e188a91d3eaa 112 and after the instruction, without ensuring their completion.
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 119
Kojto 93:e188a91d3eaa 120 /** \brief Reverse byte order (32 bit)
Kojto 93:e188a91d3eaa 121
Kojto 93:e188a91d3eaa 122 This function reverses the byte order in integer value.
Kojto 93:e188a91d3eaa 123
Kojto 93:e188a91d3eaa 124 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 125 \return Reversed value
Kojto 93:e188a91d3eaa 126 */
Kojto 93:e188a91d3eaa 127 #define __REV __rev
Kojto 93:e188a91d3eaa 128
Kojto 93:e188a91d3eaa 129
Kojto 93:e188a91d3eaa 130 /** \brief Reverse byte order (16 bit)
Kojto 93:e188a91d3eaa 131
Kojto 93:e188a91d3eaa 132 This function reverses the byte order in two unsigned short values.
Kojto 93:e188a91d3eaa 133
Kojto 93:e188a91d3eaa 134 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 135 \return Reversed value
Kojto 93:e188a91d3eaa 136 */
Kojto 93:e188a91d3eaa 137 #ifndef __NO_EMBEDDED_ASM
Kojto 93:e188a91d3eaa 138 __attribute__((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
Kojto 93:e188a91d3eaa 139 {
Kojto 93:e188a91d3eaa 140 rev16 r0, r0
Kojto 93:e188a91d3eaa 141 bx lr
Kojto 93:e188a91d3eaa 142 }
Kojto 93:e188a91d3eaa 143 #endif
Kojto 93:e188a91d3eaa 144
Kojto 93:e188a91d3eaa 145 /** \brief Reverse byte order in signed short value
Kojto 93:e188a91d3eaa 146
Kojto 93:e188a91d3eaa 147 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 93:e188a91d3eaa 148
Kojto 93:e188a91d3eaa 149 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 150 \return Reversed value
Kojto 93:e188a91d3eaa 151 */
Kojto 93:e188a91d3eaa 152 #ifndef __NO_EMBEDDED_ASM
Kojto 93:e188a91d3eaa 153 __attribute__((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
Kojto 93:e188a91d3eaa 154 {
Kojto 93:e188a91d3eaa 155 revsh r0, r0
Kojto 93:e188a91d3eaa 156 bx lr
Kojto 93:e188a91d3eaa 157 }
Kojto 93:e188a91d3eaa 158 #endif
Kojto 93:e188a91d3eaa 159
Kojto 93:e188a91d3eaa 160
Kojto 93:e188a91d3eaa 161 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 93:e188a91d3eaa 162
Kojto 93:e188a91d3eaa 163 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 93:e188a91d3eaa 164
Kojto 93:e188a91d3eaa 165 \param [in] value Value to rotate
Kojto 93:e188a91d3eaa 166 \param [in] value Number of Bits to rotate
Kojto 93:e188a91d3eaa 167 \return Rotated value
Kojto 93:e188a91d3eaa 168 */
Kojto 93:e188a91d3eaa 169 #define __ROR __ror
Kojto 93:e188a91d3eaa 170
Kojto 93:e188a91d3eaa 171
Kojto 93:e188a91d3eaa 172 /** \brief Breakpoint
Kojto 93:e188a91d3eaa 173
Kojto 93:e188a91d3eaa 174 This function causes the processor to enter Debug state.
Kojto 93:e188a91d3eaa 175 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 93:e188a91d3eaa 176
Kojto 93:e188a91d3eaa 177 \param [in] value is ignored by the processor.
Kojto 93:e188a91d3eaa 178 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 93:e188a91d3eaa 179 */
Kojto 93:e188a91d3eaa 180 #define __BKPT(value) __breakpoint(value)
Kojto 93:e188a91d3eaa 181
Kojto 93:e188a91d3eaa 182
Kojto 93:e188a91d3eaa 183 /** \brief Reverse bit order of value
Kojto 93:e188a91d3eaa 184
Kojto 93:e188a91d3eaa 185 This function reverses the bit order of the given value.
Kojto 93:e188a91d3eaa 186
Kojto 93:e188a91d3eaa 187 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 188 \return Reversed value
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 222
Kojto 93:e188a91d3eaa 223 /** \brief LDR Exclusive (8 bit)
Kojto 93:e188a91d3eaa 224
Kojto 110:165afa46840b 225 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 93:e188a91d3eaa 226
Kojto 93:e188a91d3eaa 227 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 228 \return value of type uint8_t at (*ptr)
Kojto 93:e188a91d3eaa 229 */
Kojto 93:e188a91d3eaa 230 #define __LDREXB(ptr) ((uint8_t ) __ldrex(ptr))
Kojto 93:e188a91d3eaa 231
Kojto 93:e188a91d3eaa 232
Kojto 93:e188a91d3eaa 233 /** \brief LDR Exclusive (16 bit)
Kojto 93:e188a91d3eaa 234
Kojto 110:165afa46840b 235 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 93:e188a91d3eaa 236
Kojto 93:e188a91d3eaa 237 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 238 \return value of type uint16_t at (*ptr)
Kojto 93:e188a91d3eaa 239 */
Kojto 93:e188a91d3eaa 240 #define __LDREXH(ptr) ((uint16_t) __ldrex(ptr))
Kojto 93:e188a91d3eaa 241
Kojto 93:e188a91d3eaa 242
Kojto 93:e188a91d3eaa 243 /** \brief LDR Exclusive (32 bit)
Kojto 93:e188a91d3eaa 244
Kojto 110:165afa46840b 245 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 93:e188a91d3eaa 246
Kojto 93:e188a91d3eaa 247 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 248 \return value of type uint32_t at (*ptr)
Kojto 93:e188a91d3eaa 249 */
Kojto 93:e188a91d3eaa 250 #define __LDREXW(ptr) ((uint32_t ) __ldrex(ptr))
Kojto 93:e188a91d3eaa 251
Kojto 93:e188a91d3eaa 252
Kojto 93:e188a91d3eaa 253 /** \brief STR Exclusive (8 bit)
Kojto 93:e188a91d3eaa 254
Kojto 110:165afa46840b 255 This function executes a exclusive STR instruction for 8 bit values.
Kojto 93:e188a91d3eaa 256
Kojto 93:e188a91d3eaa 257 \param [in] value Value to store
Kojto 93:e188a91d3eaa 258 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 259 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 260 \return 1 Function failed
Kojto 93:e188a91d3eaa 261 */
Kojto 93:e188a91d3eaa 262 #define __STREXB(value, ptr) __strex(value, ptr)
Kojto 93:e188a91d3eaa 263
Kojto 93:e188a91d3eaa 264
Kojto 93:e188a91d3eaa 265 /** \brief STR Exclusive (16 bit)
Kojto 93:e188a91d3eaa 266
Kojto 110:165afa46840b 267 This function executes a exclusive STR instruction for 16 bit values.
Kojto 93:e188a91d3eaa 268
Kojto 93:e188a91d3eaa 269 \param [in] value Value to store
Kojto 93:e188a91d3eaa 270 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 271 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 272 \return 1 Function failed
Kojto 93:e188a91d3eaa 273 */
Kojto 93:e188a91d3eaa 274 #define __STREXH(value, ptr) __strex(value, ptr)
Kojto 93:e188a91d3eaa 275
Kojto 93:e188a91d3eaa 276
Kojto 93:e188a91d3eaa 277 /** \brief STR Exclusive (32 bit)
Kojto 93:e188a91d3eaa 278
Kojto 110:165afa46840b 279 This function executes a exclusive STR instruction for 32 bit values.
Kojto 93:e188a91d3eaa 280
Kojto 93:e188a91d3eaa 281 \param [in] value Value to store
Kojto 93:e188a91d3eaa 282 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 283 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 284 \return 1 Function failed
Kojto 93:e188a91d3eaa 285 */
Kojto 93:e188a91d3eaa 286 #define __STREXW(value, ptr) __strex(value, ptr)
Kojto 93:e188a91d3eaa 287
Kojto 93:e188a91d3eaa 288
Kojto 93:e188a91d3eaa 289 /** \brief Remove the exclusive lock
Kojto 93:e188a91d3eaa 290
Kojto 93:e188a91d3eaa 291 This function removes the exclusive lock which is created by LDREX.
Kojto 93:e188a91d3eaa 292
Kojto 93:e188a91d3eaa 293 */
Kojto 93:e188a91d3eaa 294 #define __CLREX __clrex
Kojto 93:e188a91d3eaa 295
Kojto 93:e188a91d3eaa 296
Kojto 93:e188a91d3eaa 297 /** \brief Signed Saturate
Kojto 93:e188a91d3eaa 298
Kojto 93:e188a91d3eaa 299 This function saturates a signed value.
Kojto 93:e188a91d3eaa 300
Kojto 93:e188a91d3eaa 301 \param [in] value Value to be saturated
Kojto 93:e188a91d3eaa 302 \param [in] sat Bit position to saturate to (1..32)
Kojto 93:e188a91d3eaa 303 \return Saturated value
Kojto 93:e188a91d3eaa 304 */
Kojto 93:e188a91d3eaa 305 #define __SSAT __ssat
Kojto 93:e188a91d3eaa 306
Kojto 93:e188a91d3eaa 307
Kojto 93:e188a91d3eaa 308 /** \brief Unsigned Saturate
Kojto 93:e188a91d3eaa 309
Kojto 93:e188a91d3eaa 310 This function saturates an unsigned value.
Kojto 93:e188a91d3eaa 311
Kojto 93:e188a91d3eaa 312 \param [in] value Value to be saturated
Kojto 93:e188a91d3eaa 313 \param [in] sat Bit position to saturate to (0..31)
Kojto 93:e188a91d3eaa 314 \return Saturated value
Kojto 93:e188a91d3eaa 315 */
Kojto 93:e188a91d3eaa 316 #define __USAT __usat
Kojto 93:e188a91d3eaa 317
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 354
Kojto 93:e188a91d3eaa 355
Kojto 110:165afa46840b 356 /** \brief LDRT Unprivileged (32 bit)
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 374
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 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 93:e188a91d3eaa 396
Kojto 93:e188a91d3eaa 397
Kojto 93:e188a91d3eaa 398 #elif defined ( __GNUC__ ) /*------------------ GNU Compiler ---------------------*/
Kojto 93:e188a91d3eaa 399 /* GNU gcc specific functions */
Kojto 93:e188a91d3eaa 400
Kojto 93:e188a91d3eaa 401 /* Define macros for porting to both thumb1 and thumb2.
Kojto 93:e188a91d3eaa 402 * For thumb1, use low register (r0-r7), specified by constrant "l"
Kojto 93:e188a91d3eaa 403 * Otherwise, use general registers, specified by constrant "r" */
Kojto 93:e188a91d3eaa 404 #if defined (__thumb__) && !defined (__thumb2__)
Kojto 93:e188a91d3eaa 405 #define __CMSIS_GCC_OUT_REG(r) "=l" (r)
Kojto 93:e188a91d3eaa 406 #define __CMSIS_GCC_USE_REG(r) "l" (r)
Kojto 93:e188a91d3eaa 407 #else
Kojto 93:e188a91d3eaa 408 #define __CMSIS_GCC_OUT_REG(r) "=r" (r)
Kojto 93:e188a91d3eaa 409 #define __CMSIS_GCC_USE_REG(r) "r" (r)
Kojto 93:e188a91d3eaa 410 #endif
Kojto 93:e188a91d3eaa 411
Kojto 93:e188a91d3eaa 412 /** \brief No Operation
Kojto 93:e188a91d3eaa 413
Kojto 93:e188a91d3eaa 414 No Operation does nothing. This instruction can be used for code alignment purposes.
Kojto 93:e188a91d3eaa 415 */
Kojto 110:165afa46840b 416 __attribute__((always_inline)) __STATIC_INLINE void __NOP(void)
Kojto 93:e188a91d3eaa 417 {
Kojto 93:e188a91d3eaa 418 __ASM volatile ("nop");
Kojto 93:e188a91d3eaa 419 }
Kojto 93:e188a91d3eaa 420
Kojto 93:e188a91d3eaa 421
Kojto 93:e188a91d3eaa 422 /** \brief Wait For Interrupt
Kojto 93:e188a91d3eaa 423
Kojto 93:e188a91d3eaa 424 Wait For Interrupt is a hint instruction that suspends execution
Kojto 93:e188a91d3eaa 425 until one of a number of events occurs.
Kojto 93:e188a91d3eaa 426 */
Kojto 110:165afa46840b 427 __attribute__((always_inline)) __STATIC_INLINE void __WFI(void)
Kojto 93:e188a91d3eaa 428 {
Kojto 93:e188a91d3eaa 429 __ASM volatile ("wfi");
Kojto 93:e188a91d3eaa 430 }
Kojto 93:e188a91d3eaa 431
Kojto 93:e188a91d3eaa 432
Kojto 93:e188a91d3eaa 433 /** \brief Wait For Event
Kojto 93:e188a91d3eaa 434
Kojto 93:e188a91d3eaa 435 Wait For Event is a hint instruction that permits the processor to enter
Kojto 93:e188a91d3eaa 436 a low-power state until one of a number of events occurs.
Kojto 93:e188a91d3eaa 437 */
Kojto 110:165afa46840b 438 __attribute__((always_inline)) __STATIC_INLINE void __WFE(void)
Kojto 93:e188a91d3eaa 439 {
Kojto 93:e188a91d3eaa 440 __ASM volatile ("wfe");
Kojto 93:e188a91d3eaa 441 }
Kojto 93:e188a91d3eaa 442
Kojto 93:e188a91d3eaa 443
Kojto 93:e188a91d3eaa 444 /** \brief Send Event
Kojto 93:e188a91d3eaa 445
Kojto 93:e188a91d3eaa 446 Send Event is a hint instruction. It causes an event to be signaled to the CPU.
Kojto 93:e188a91d3eaa 447 */
Kojto 110:165afa46840b 448 __attribute__((always_inline)) __STATIC_INLINE void __SEV(void)
Kojto 93:e188a91d3eaa 449 {
Kojto 93:e188a91d3eaa 450 __ASM volatile ("sev");
Kojto 93:e188a91d3eaa 451 }
Kojto 93:e188a91d3eaa 452
Kojto 93:e188a91d3eaa 453
Kojto 93:e188a91d3eaa 454 /** \brief Instruction Synchronization Barrier
Kojto 93:e188a91d3eaa 455
Kojto 93:e188a91d3eaa 456 Instruction Synchronization Barrier flushes the pipeline in the processor,
Kojto 93:e188a91d3eaa 457 so that all instructions following the ISB are fetched from cache or
Kojto 93:e188a91d3eaa 458 memory, after the instruction has been completed.
Kojto 93:e188a91d3eaa 459 */
Kojto 110:165afa46840b 460 __attribute__((always_inline)) __STATIC_INLINE void __ISB(void)
Kojto 93:e188a91d3eaa 461 {
Kojto 110:165afa46840b 462 __ASM volatile ("isb 0xF":::"memory");
Kojto 93:e188a91d3eaa 463 }
Kojto 93:e188a91d3eaa 464
Kojto 93:e188a91d3eaa 465
Kojto 93:e188a91d3eaa 466 /** \brief Data Synchronization Barrier
Kojto 93:e188a91d3eaa 467
Kojto 93:e188a91d3eaa 468 This function acts as a special kind of Data Memory Barrier.
Kojto 93:e188a91d3eaa 469 It completes when all explicit memory accesses before this instruction complete.
Kojto 93:e188a91d3eaa 470 */
Kojto 110:165afa46840b 471 __attribute__((always_inline)) __STATIC_INLINE void __DSB(void)
Kojto 93:e188a91d3eaa 472 {
Kojto 110:165afa46840b 473 __ASM volatile ("dsb 0xF":::"memory");
Kojto 93:e188a91d3eaa 474 }
Kojto 93:e188a91d3eaa 475
Kojto 93:e188a91d3eaa 476
Kojto 93:e188a91d3eaa 477 /** \brief Data Memory Barrier
Kojto 93:e188a91d3eaa 478
Kojto 93:e188a91d3eaa 479 This function ensures the apparent order of the explicit memory operations before
Kojto 93:e188a91d3eaa 480 and after the instruction, without ensuring their completion.
Kojto 93:e188a91d3eaa 481 */
Kojto 110:165afa46840b 482 __attribute__((always_inline)) __STATIC_INLINE void __DMB(void)
Kojto 93:e188a91d3eaa 483 {
Kojto 110:165afa46840b 484 __ASM volatile ("dmb 0xF":::"memory");
Kojto 93:e188a91d3eaa 485 }
Kojto 93:e188a91d3eaa 486
Kojto 93:e188a91d3eaa 487
Kojto 93:e188a91d3eaa 488 /** \brief Reverse byte order (32 bit)
Kojto 93:e188a91d3eaa 489
Kojto 93:e188a91d3eaa 490 This function reverses the byte order in integer value.
Kojto 93:e188a91d3eaa 491
Kojto 93:e188a91d3eaa 492 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 493 \return Reversed value
Kojto 93:e188a91d3eaa 494 */
Kojto 110:165afa46840b 495 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value)
Kojto 93:e188a91d3eaa 496 {
Kojto 93:e188a91d3eaa 497 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
Kojto 93:e188a91d3eaa 498 return __builtin_bswap32(value);
Kojto 93:e188a91d3eaa 499 #else
Kojto 93:e188a91d3eaa 500 uint32_t result;
Kojto 93:e188a91d3eaa 501
Kojto 93:e188a91d3eaa 502 __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 93:e188a91d3eaa 503 return(result);
Kojto 93:e188a91d3eaa 504 #endif
Kojto 93:e188a91d3eaa 505 }
Kojto 93:e188a91d3eaa 506
Kojto 93:e188a91d3eaa 507
Kojto 93:e188a91d3eaa 508 /** \brief Reverse byte order (16 bit)
Kojto 93:e188a91d3eaa 509
Kojto 93:e188a91d3eaa 510 This function reverses the byte order in two unsigned short values.
Kojto 93:e188a91d3eaa 511
Kojto 93:e188a91d3eaa 512 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 513 \return Reversed value
Kojto 93:e188a91d3eaa 514 */
Kojto 110:165afa46840b 515 __attribute__((always_inline)) __STATIC_INLINE uint32_t __REV16(uint32_t value)
Kojto 93:e188a91d3eaa 516 {
Kojto 93:e188a91d3eaa 517 uint32_t result;
Kojto 93:e188a91d3eaa 518
Kojto 93:e188a91d3eaa 519 __ASM volatile ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 93:e188a91d3eaa 520 return(result);
Kojto 93:e188a91d3eaa 521 }
Kojto 93:e188a91d3eaa 522
Kojto 93:e188a91d3eaa 523
Kojto 93:e188a91d3eaa 524 /** \brief Reverse byte order in signed short value
Kojto 93:e188a91d3eaa 525
Kojto 93:e188a91d3eaa 526 This function reverses the byte order in a signed short value with sign extension to integer.
Kojto 93:e188a91d3eaa 527
Kojto 93:e188a91d3eaa 528 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 529 \return Reversed value
Kojto 93:e188a91d3eaa 530 */
Kojto 110:165afa46840b 531 __attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value)
Kojto 93:e188a91d3eaa 532 {
Kojto 93:e188a91d3eaa 533 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 93:e188a91d3eaa 534 return (short)__builtin_bswap16(value);
Kojto 93:e188a91d3eaa 535 #else
Kojto 93:e188a91d3eaa 536 uint32_t result;
Kojto 93:e188a91d3eaa 537
Kojto 93:e188a91d3eaa 538 __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 93:e188a91d3eaa 539 return(result);
Kojto 93:e188a91d3eaa 540 #endif
Kojto 93:e188a91d3eaa 541 }
Kojto 93:e188a91d3eaa 542
Kojto 93:e188a91d3eaa 543
Kojto 93:e188a91d3eaa 544 /** \brief Rotate Right in unsigned value (32 bit)
Kojto 93:e188a91d3eaa 545
Kojto 93:e188a91d3eaa 546 This function Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
Kojto 93:e188a91d3eaa 547
Kojto 93:e188a91d3eaa 548 \param [in] value Value to rotate
Kojto 93:e188a91d3eaa 549 \param [in] value Number of Bits to rotate
Kojto 93:e188a91d3eaa 550 \return Rotated value
Kojto 93:e188a91d3eaa 551 */
Kojto 110:165afa46840b 552 __attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
Kojto 93:e188a91d3eaa 553 {
Kojto 110:165afa46840b 554 return (op1 >> op2) | (op1 << (32 - op2));
Kojto 93:e188a91d3eaa 555 }
Kojto 93:e188a91d3eaa 556
Kojto 93:e188a91d3eaa 557
Kojto 93:e188a91d3eaa 558 /** \brief Breakpoint
Kojto 93:e188a91d3eaa 559
Kojto 93:e188a91d3eaa 560 This function causes the processor to enter Debug state.
Kojto 93:e188a91d3eaa 561 Debug tools can use this to investigate system state when the instruction at a particular address is reached.
Kojto 93:e188a91d3eaa 562
Kojto 93:e188a91d3eaa 563 \param [in] value is ignored by the processor.
Kojto 93:e188a91d3eaa 564 If required, a debugger can use it to store additional information about the breakpoint.
Kojto 93:e188a91d3eaa 565 */
Kojto 93:e188a91d3eaa 566 #define __BKPT(value) __ASM volatile ("bkpt "#value)
Kojto 93:e188a91d3eaa 567
Kojto 93:e188a91d3eaa 568
Kojto 93:e188a91d3eaa 569 /** \brief Reverse bit order of value
Kojto 93:e188a91d3eaa 570
Kojto 93:e188a91d3eaa 571 This function reverses the bit order of the given value.
Kojto 93:e188a91d3eaa 572
Kojto 93:e188a91d3eaa 573 \param [in] value Value to reverse
Kojto 93:e188a91d3eaa 574 \return Reversed value
Kojto 93:e188a91d3eaa 575 */
Kojto 110:165afa46840b 576 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
Kojto 93:e188a91d3eaa 577 {
Kojto 93:e188a91d3eaa 578 uint32_t result;
Kojto 93:e188a91d3eaa 579
Kojto 110:165afa46840b 580 #if (__CORTEX_M >= 0x03) || (__CORTEX_SC >= 300)
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 595 }
Kojto 93:e188a91d3eaa 596
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 610 /** \brief LDR Exclusive (8 bit)
Kojto 93:e188a91d3eaa 611
Kojto 110:165afa46840b 612 This function executes a exclusive LDR instruction for 8 bit value.
Kojto 93:e188a91d3eaa 613
Kojto 93:e188a91d3eaa 614 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 615 \return value of type uint8_t at (*ptr)
Kojto 93:e188a91d3eaa 616 */
Kojto 110:165afa46840b 617 __attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr)
Kojto 93:e188a91d3eaa 618 {
Kojto 93:e188a91d3eaa 619 uint32_t result;
Kojto 93:e188a91d3eaa 620
Kojto 93:e188a91d3eaa 621 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 93:e188a91d3eaa 622 __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 93:e188a91d3eaa 623 #else
Kojto 93:e188a91d3eaa 624 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 93:e188a91d3eaa 625 accepted by assembler. So has to use following less efficient pattern.
Kojto 93:e188a91d3eaa 626 */
Kojto 93:e188a91d3eaa 627 __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 93:e188a91d3eaa 628 #endif
Kojto 110:165afa46840b 629 return ((uint8_t) result); /* Add explicit type cast here */
Kojto 93:e188a91d3eaa 630 }
Kojto 93:e188a91d3eaa 631
Kojto 93:e188a91d3eaa 632
Kojto 93:e188a91d3eaa 633 /** \brief LDR Exclusive (16 bit)
Kojto 93:e188a91d3eaa 634
Kojto 110:165afa46840b 635 This function executes a exclusive LDR instruction for 16 bit values.
Kojto 93:e188a91d3eaa 636
Kojto 93:e188a91d3eaa 637 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 638 \return value of type uint16_t at (*ptr)
Kojto 93:e188a91d3eaa 639 */
Kojto 110:165afa46840b 640 __attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr)
Kojto 93:e188a91d3eaa 641 {
Kojto 93:e188a91d3eaa 642 uint32_t result;
Kojto 93:e188a91d3eaa 643
Kojto 93:e188a91d3eaa 644 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
Kojto 93:e188a91d3eaa 645 __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 93:e188a91d3eaa 646 #else
Kojto 93:e188a91d3eaa 647 /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
Kojto 93:e188a91d3eaa 648 accepted by assembler. So has to use following less efficient pattern.
Kojto 93:e188a91d3eaa 649 */
Kojto 93:e188a91d3eaa 650 __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
Kojto 93:e188a91d3eaa 651 #endif
Kojto 110:165afa46840b 652 return ((uint16_t) result); /* Add explicit type cast here */
Kojto 93:e188a91d3eaa 653 }
Kojto 93:e188a91d3eaa 654
Kojto 93:e188a91d3eaa 655
Kojto 93:e188a91d3eaa 656 /** \brief LDR Exclusive (32 bit)
Kojto 93:e188a91d3eaa 657
Kojto 110:165afa46840b 658 This function executes a exclusive LDR instruction for 32 bit values.
Kojto 93:e188a91d3eaa 659
Kojto 93:e188a91d3eaa 660 \param [in] ptr Pointer to data
Kojto 93:e188a91d3eaa 661 \return value of type uint32_t at (*ptr)
Kojto 93:e188a91d3eaa 662 */
Kojto 110:165afa46840b 663 __attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr)
Kojto 93:e188a91d3eaa 664 {
Kojto 93:e188a91d3eaa 665 uint32_t result;
Kojto 93:e188a91d3eaa 666
Kojto 93:e188a91d3eaa 667 __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
Kojto 93:e188a91d3eaa 668 return(result);
Kojto 93:e188a91d3eaa 669 }
Kojto 93:e188a91d3eaa 670
Kojto 93:e188a91d3eaa 671
Kojto 93:e188a91d3eaa 672 /** \brief STR Exclusive (8 bit)
Kojto 93:e188a91d3eaa 673
Kojto 110:165afa46840b 674 This function executes a exclusive STR instruction for 8 bit values.
Kojto 93:e188a91d3eaa 675
Kojto 93:e188a91d3eaa 676 \param [in] value Value to store
Kojto 93:e188a91d3eaa 677 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 678 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 679 \return 1 Function failed
Kojto 93:e188a91d3eaa 680 */
Kojto 110:165afa46840b 681 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
Kojto 93:e188a91d3eaa 682 {
Kojto 93:e188a91d3eaa 683 uint32_t result;
Kojto 93:e188a91d3eaa 684
Kojto 110:165afa46840b 685 __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 93:e188a91d3eaa 686 return(result);
Kojto 93:e188a91d3eaa 687 }
Kojto 93:e188a91d3eaa 688
Kojto 93:e188a91d3eaa 689
Kojto 93:e188a91d3eaa 690 /** \brief STR Exclusive (16 bit)
Kojto 93:e188a91d3eaa 691
Kojto 110:165afa46840b 692 This function executes a exclusive STR instruction for 16 bit values.
Kojto 93:e188a91d3eaa 693
Kojto 93:e188a91d3eaa 694 \param [in] value Value to store
Kojto 93:e188a91d3eaa 695 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 696 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 697 \return 1 Function failed
Kojto 93:e188a91d3eaa 698 */
Kojto 110:165afa46840b 699 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
Kojto 93:e188a91d3eaa 700 {
Kojto 93:e188a91d3eaa 701 uint32_t result;
Kojto 93:e188a91d3eaa 702
Kojto 110:165afa46840b 703 __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
Kojto 93:e188a91d3eaa 704 return(result);
Kojto 93:e188a91d3eaa 705 }
Kojto 93:e188a91d3eaa 706
Kojto 93:e188a91d3eaa 707
Kojto 93:e188a91d3eaa 708 /** \brief STR Exclusive (32 bit)
Kojto 93:e188a91d3eaa 709
Kojto 110:165afa46840b 710 This function executes a exclusive STR instruction for 32 bit values.
Kojto 93:e188a91d3eaa 711
Kojto 93:e188a91d3eaa 712 \param [in] value Value to store
Kojto 93:e188a91d3eaa 713 \param [in] ptr Pointer to location
Kojto 93:e188a91d3eaa 714 \return 0 Function succeeded
Kojto 93:e188a91d3eaa 715 \return 1 Function failed
Kojto 93:e188a91d3eaa 716 */
Kojto 110:165afa46840b 717 __attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
Kojto 93:e188a91d3eaa 718 {
Kojto 93:e188a91d3eaa 719 uint32_t result;
Kojto 93:e188a91d3eaa 720
Kojto 93:e188a91d3eaa 721 __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
Kojto 93:e188a91d3eaa 722 return(result);
Kojto 93:e188a91d3eaa 723 }
Kojto 93:e188a91d3eaa 724
Kojto 93:e188a91d3eaa 725
Kojto 93:e188a91d3eaa 726 /** \brief Remove the exclusive lock
Kojto 93:e188a91d3eaa 727
Kojto 93:e188a91d3eaa 728 This function removes the exclusive lock which is created by LDREX.
Kojto 93:e188a91d3eaa 729
Kojto 93:e188a91d3eaa 730 */
Kojto 110:165afa46840b 731 __attribute__((always_inline)) __STATIC_INLINE void __CLREX(void)
Kojto 93:e188a91d3eaa 732 {
Kojto 93:e188a91d3eaa 733 __ASM volatile ("clrex" ::: "memory");
Kojto 93:e188a91d3eaa 734 }
Kojto 93:e188a91d3eaa 735
Kojto 93:e188a91d3eaa 736
Kojto 93:e188a91d3eaa 737 /** \brief Signed Saturate
Kojto 93:e188a91d3eaa 738
Kojto 93:e188a91d3eaa 739 This function saturates a signed value.
Kojto 93:e188a91d3eaa 740
Kojto 93:e188a91d3eaa 741 \param [in] value Value to be saturated
Kojto 93:e188a91d3eaa 742 \param [in] sat Bit position to saturate to (1..32)
Kojto 93:e188a91d3eaa 743 \return Saturated value
Kojto 93:e188a91d3eaa 744 */
Kojto 93:e188a91d3eaa 745 #define __SSAT(ARG1,ARG2) \
Kojto 93:e188a91d3eaa 746 ({ \
Kojto 93:e188a91d3eaa 747 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 93:e188a91d3eaa 748 __ASM ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 93:e188a91d3eaa 749 __RES; \
Kojto 93:e188a91d3eaa 750 })
Kojto 93:e188a91d3eaa 751
Kojto 93:e188a91d3eaa 752
Kojto 93:e188a91d3eaa 753 /** \brief Unsigned Saturate
Kojto 93:e188a91d3eaa 754
Kojto 93:e188a91d3eaa 755 This function saturates an unsigned value.
Kojto 93:e188a91d3eaa 756
Kojto 93:e188a91d3eaa 757 \param [in] value Value to be saturated
Kojto 93:e188a91d3eaa 758 \param [in] sat Bit position to saturate to (0..31)
Kojto 93:e188a91d3eaa 759 \return Saturated value
Kojto 93:e188a91d3eaa 760 */
Kojto 93:e188a91d3eaa 761 #define __USAT(ARG1,ARG2) \
Kojto 93:e188a91d3eaa 762 ({ \
Kojto 93:e188a91d3eaa 763 uint32_t __RES, __ARG1 = (ARG1); \
Kojto 93:e188a91d3eaa 764 __ASM ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) ); \
Kojto 93:e188a91d3eaa 765 __RES; \
Kojto 93:e188a91d3eaa 766 })
Kojto 93:e188a91d3eaa 767
Kojto 93:e188a91d3eaa 768
Kojto 110:165afa46840b 769 /** \brief Rotate Right with Extend (32 bit)
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 773
Kojto 110:165afa46840b 774 \param [in] value Value to rotate
Kojto 110:165afa46840b 775 \return Rotated value
Kojto 93:e188a91d3eaa 776 */
Kojto 110:165afa46840b 777 __attribute__((always_inline)) __STATIC_INLINE uint32_t __RRX(uint32_t value)
Kojto 93:e188a91d3eaa 778 {
Kojto 110:165afa46840b 779 uint32_t result;
Kojto 93:e188a91d3eaa 780
Kojto 110:165afa46840b 781 __ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
Kojto 93:e188a91d3eaa 782 return(result);
Kojto 93:e188a91d3eaa 783 }
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 830
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 897
Kojto 93:e188a91d3eaa 898
Kojto 93:e188a91d3eaa 899 #elif defined ( __TASKING__ ) /*------------------ TASKING Compiler --------------*/
Kojto 93:e188a91d3eaa 900 /* TASKING carm specific functions */
Kojto 93:e188a91d3eaa 901 /*
Kojto 93:e188a91d3eaa 902 * The CMSIS functions have been implemented as intrinsics in the compiler.
Kojto 93:e188a91d3eaa 903 * Please use "carm -?i" to get an up to date list of all intrinsics,
Kojto 93:e188a91d3eaa 904 * Including the CMSIS ones.
Kojto 93:e188a91d3eaa 905 */
Kojto 93:e188a91d3eaa 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 93:e188a91d3eaa 912 #endif
Kojto 93:e188a91d3eaa 913
Kojto 93:e188a91d3eaa 914 /*@}*/ /* end of group CMSIS_Core_InstructionInterface */
Kojto 93:e188a91d3eaa 915
Kojto 93:e188a91d3eaa 916 #endif /* __CORE_CMINSTR_H */