Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/platform/mbed_critical.c@0:fbdae7e6d805, 2018-05-14 (annotated)

Committer:
borlanic
Date:
Mon May 14 11:29:06 2018 +0000
Revision:
0:fbdae7e6d805
BBR

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:fbdae7e6d805 1 /*
borlanic 0:fbdae7e6d805 2 * Copyright (c) 2015-2016, ARM Limited, All Rights Reserved
borlanic 0:fbdae7e6d805 3 * SPDX-License-Identifier: Apache-2.0
borlanic 0:fbdae7e6d805 4 *
borlanic 0:fbdae7e6d805 5 * Licensed under the Apache License, Version 2.0 (the "License"); you may
borlanic 0:fbdae7e6d805 6 * not use this file except in compliance with the License.
borlanic 0:fbdae7e6d805 7 * You may obtain a copy of the License at
borlanic 0:fbdae7e6d805 8 *
borlanic 0:fbdae7e6d805 9 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:fbdae7e6d805 10 *
borlanic 0:fbdae7e6d805 11 * Unless required by applicable law or agreed to in writing, software
borlanic 0:fbdae7e6d805 12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
borlanic 0:fbdae7e6d805 13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:fbdae7e6d805 14 * See the License for the specific language governing permissions and
borlanic 0:fbdae7e6d805 15 * limitations under the License.
borlanic 0:fbdae7e6d805 16 */
borlanic 0:fbdae7e6d805 17
borlanic 0:fbdae7e6d805 18 /* Declare __STDC_LIMIT_MACROS so stdint.h defines UINT32_MAX when using C++ */
borlanic 0:fbdae7e6d805 19 #define __STDC_LIMIT_MACROS
borlanic 0:fbdae7e6d805 20 #include "hal/critical_section_api.h"
borlanic 0:fbdae7e6d805 21
borlanic 0:fbdae7e6d805 22 #include "cmsis.h"
borlanic 0:fbdae7e6d805 23 #include "platform/mbed_assert.h"
borlanic 0:fbdae7e6d805 24 #include "platform/mbed_critical.h"
borlanic 0:fbdae7e6d805 25 #include "platform/mbed_toolchain.h"
borlanic 0:fbdae7e6d805 26
borlanic 0:fbdae7e6d805 27 // if __EXCLUSIVE_ACCESS rtx macro not defined, we need to get this via own-set architecture macros
borlanic 0:fbdae7e6d805 28 #ifndef MBED_EXCLUSIVE_ACCESS
borlanic 0:fbdae7e6d805 29 #ifndef __EXCLUSIVE_ACCESS
borlanic 0:fbdae7e6d805 30 #if ((__ARM_ARCH_7M__ == 1U) || \
borlanic 0:fbdae7e6d805 31 (__ARM_ARCH_7EM__ == 1U) || \
borlanic 0:fbdae7e6d805 32 (__ARM_ARCH_8M_BASE__ == 1U) || \
borlanic 0:fbdae7e6d805 33 (__ARM_ARCH_8M_MAIN__ == 1U)) || \
borlanic 0:fbdae7e6d805 34 (__ARM_ARCH_7A__ == 1U)
borlanic 0:fbdae7e6d805 35 #define MBED_EXCLUSIVE_ACCESS 1U
borlanic 0:fbdae7e6d805 36 #elif (__ARM_ARCH_6M__ == 1U)
borlanic 0:fbdae7e6d805 37 #define MBED_EXCLUSIVE_ACCESS 0U
borlanic 0:fbdae7e6d805 38 #else
borlanic 0:fbdae7e6d805 39 #error "Unknown architecture for exclusive access"
borlanic 0:fbdae7e6d805 40 #endif
borlanic 0:fbdae7e6d805 41 #else
borlanic 0:fbdae7e6d805 42 #define MBED_EXCLUSIVE_ACCESS __EXCLUSIVE_ACCESS
borlanic 0:fbdae7e6d805 43 #endif
borlanic 0:fbdae7e6d805 44 #endif
borlanic 0:fbdae7e6d805 45
borlanic 0:fbdae7e6d805 46 static volatile uint32_t critical_section_reentrancy_counter = 0;
borlanic 0:fbdae7e6d805 47
borlanic 0:fbdae7e6d805 48 bool core_util_are_interrupts_enabled(void)
borlanic 0:fbdae7e6d805 49 {
borlanic 0:fbdae7e6d805 50 #if defined(__CORTEX_A9)
borlanic 0:fbdae7e6d805 51 return ((__get_CPSR() & 0x80) == 0);
borlanic 0:fbdae7e6d805 52 #else
borlanic 0:fbdae7e6d805 53 return ((__get_PRIMASK() & 0x1) == 0);
borlanic 0:fbdae7e6d805 54 #endif
borlanic 0:fbdae7e6d805 55 }
borlanic 0:fbdae7e6d805 56
borlanic 0:fbdae7e6d805 57 bool core_util_is_isr_active(void)
borlanic 0:fbdae7e6d805 58 {
borlanic 0:fbdae7e6d805 59 #if defined(__CORTEX_A9)
borlanic 0:fbdae7e6d805 60 switch(__get_CPSR() & 0x1FU) {
borlanic 0:fbdae7e6d805 61 case CPSR_M_USR:
borlanic 0:fbdae7e6d805 62 case CPSR_M_SYS:
borlanic 0:fbdae7e6d805 63 return false;
borlanic 0:fbdae7e6d805 64 case CPSR_M_SVC:
borlanic 0:fbdae7e6d805 65 default:
borlanic 0:fbdae7e6d805 66 return true;
borlanic 0:fbdae7e6d805 67 }
borlanic 0:fbdae7e6d805 68 #else
borlanic 0:fbdae7e6d805 69 return (__get_IPSR() != 0U);
borlanic 0:fbdae7e6d805 70 #endif
borlanic 0:fbdae7e6d805 71 }
borlanic 0:fbdae7e6d805 72
borlanic 0:fbdae7e6d805 73 bool core_util_in_critical_section(void)
borlanic 0:fbdae7e6d805 74 {
borlanic 0:fbdae7e6d805 75 return hal_in_critical_section();
borlanic 0:fbdae7e6d805 76 }
borlanic 0:fbdae7e6d805 77
borlanic 0:fbdae7e6d805 78 void core_util_critical_section_enter(void)
borlanic 0:fbdae7e6d805 79 {
borlanic 0:fbdae7e6d805 80 // FIXME
borlanic 0:fbdae7e6d805 81 #ifdef FEATURE_UVISOR
borlanic 0:fbdae7e6d805 82 #warning "core_util_critical_section_enter needs fixing to work from unprivileged code"
borlanic 0:fbdae7e6d805 83 #else
borlanic 0:fbdae7e6d805 84 // If the reentrancy counter overflows something has gone badly wrong.
borlanic 0:fbdae7e6d805 85 MBED_ASSERT(critical_section_reentrancy_counter < UINT32_MAX);
borlanic 0:fbdae7e6d805 86 #endif /* FEATURE_UVISOR */
borlanic 0:fbdae7e6d805 87
borlanic 0:fbdae7e6d805 88 hal_critical_section_enter();
borlanic 0:fbdae7e6d805 89
borlanic 0:fbdae7e6d805 90 ++critical_section_reentrancy_counter;
borlanic 0:fbdae7e6d805 91 }
borlanic 0:fbdae7e6d805 92
borlanic 0:fbdae7e6d805 93 void core_util_critical_section_exit(void)
borlanic 0:fbdae7e6d805 94 {
borlanic 0:fbdae7e6d805 95 // FIXME
borlanic 0:fbdae7e6d805 96 #ifdef FEATURE_UVISOR
borlanic 0:fbdae7e6d805 97 #warning "core_util_critical_section_exit needs fixing to work from unprivileged code"
borlanic 0:fbdae7e6d805 98 #endif /* FEATURE_UVISOR */
borlanic 0:fbdae7e6d805 99
borlanic 0:fbdae7e6d805 100 // If critical_section_enter has not previously been called, do nothing
borlanic 0:fbdae7e6d805 101 if (critical_section_reentrancy_counter == 0) {
borlanic 0:fbdae7e6d805 102 return;
borlanic 0:fbdae7e6d805 103 }
borlanic 0:fbdae7e6d805 104
borlanic 0:fbdae7e6d805 105 --critical_section_reentrancy_counter;
borlanic 0:fbdae7e6d805 106
borlanic 0:fbdae7e6d805 107 if (critical_section_reentrancy_counter == 0) {
borlanic 0:fbdae7e6d805 108 hal_critical_section_exit();
borlanic 0:fbdae7e6d805 109 }
borlanic 0:fbdae7e6d805 110 }
borlanic 0:fbdae7e6d805 111
borlanic 0:fbdae7e6d805 112 #if MBED_EXCLUSIVE_ACCESS
borlanic 0:fbdae7e6d805 113
borlanic 0:fbdae7e6d805 114 /* Supress __ldrex and __strex deprecated warnings - "#3731-D: intrinsic is deprecated" */
borlanic 0:fbdae7e6d805 115 #if defined (__CC_ARM)
borlanic 0:fbdae7e6d805 116 #pragma diag_suppress 3731
borlanic 0:fbdae7e6d805 117 #endif
borlanic 0:fbdae7e6d805 118
borlanic 0:fbdae7e6d805 119 bool core_util_atomic_cas_u8(volatile uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
borlanic 0:fbdae7e6d805 120 {
borlanic 0:fbdae7e6d805 121 do {
borlanic 0:fbdae7e6d805 122 uint8_t currentValue = __LDREXB(ptr);
borlanic 0:fbdae7e6d805 123 if (currentValue != *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 124 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 125 __CLREX();
borlanic 0:fbdae7e6d805 126 return false;
borlanic 0:fbdae7e6d805 127 }
borlanic 0:fbdae7e6d805 128 } while (__STREXB(desiredValue, ptr));
borlanic 0:fbdae7e6d805 129 return true;
borlanic 0:fbdae7e6d805 130 }
borlanic 0:fbdae7e6d805 131
borlanic 0:fbdae7e6d805 132 bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
borlanic 0:fbdae7e6d805 133 {
borlanic 0:fbdae7e6d805 134 do {
borlanic 0:fbdae7e6d805 135 uint16_t currentValue = __LDREXH(ptr);
borlanic 0:fbdae7e6d805 136 if (currentValue != *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 137 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 138 __CLREX();
borlanic 0:fbdae7e6d805 139 return false;
borlanic 0:fbdae7e6d805 140 }
borlanic 0:fbdae7e6d805 141 } while (__STREXH(desiredValue, ptr));
borlanic 0:fbdae7e6d805 142 return true;
borlanic 0:fbdae7e6d805 143 }
borlanic 0:fbdae7e6d805 144
borlanic 0:fbdae7e6d805 145
borlanic 0:fbdae7e6d805 146 bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
borlanic 0:fbdae7e6d805 147 {
borlanic 0:fbdae7e6d805 148 do {
borlanic 0:fbdae7e6d805 149 uint32_t currentValue = __LDREXW(ptr);
borlanic 0:fbdae7e6d805 150 if (currentValue != *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 151 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 152 __CLREX();
borlanic 0:fbdae7e6d805 153 return false;
borlanic 0:fbdae7e6d805 154 }
borlanic 0:fbdae7e6d805 155 } while (__STREXW(desiredValue, ptr));
borlanic 0:fbdae7e6d805 156 return true;
borlanic 0:fbdae7e6d805 157 }
borlanic 0:fbdae7e6d805 158
borlanic 0:fbdae7e6d805 159 uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
borlanic 0:fbdae7e6d805 160 {
borlanic 0:fbdae7e6d805 161 uint8_t newValue;
borlanic 0:fbdae7e6d805 162 do {
borlanic 0:fbdae7e6d805 163 newValue = __LDREXB(valuePtr) + delta;
borlanic 0:fbdae7e6d805 164 } while (__STREXB(newValue, valuePtr));
borlanic 0:fbdae7e6d805 165 return newValue;
borlanic 0:fbdae7e6d805 166 }
borlanic 0:fbdae7e6d805 167
borlanic 0:fbdae7e6d805 168 uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
borlanic 0:fbdae7e6d805 169 {
borlanic 0:fbdae7e6d805 170 uint16_t newValue;
borlanic 0:fbdae7e6d805 171 do {
borlanic 0:fbdae7e6d805 172 newValue = __LDREXH(valuePtr) + delta;
borlanic 0:fbdae7e6d805 173 } while (__STREXH(newValue, valuePtr));
borlanic 0:fbdae7e6d805 174 return newValue;
borlanic 0:fbdae7e6d805 175 }
borlanic 0:fbdae7e6d805 176
borlanic 0:fbdae7e6d805 177 uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
borlanic 0:fbdae7e6d805 178 {
borlanic 0:fbdae7e6d805 179 uint32_t newValue;
borlanic 0:fbdae7e6d805 180 do {
borlanic 0:fbdae7e6d805 181 newValue = __LDREXW(valuePtr) + delta;
borlanic 0:fbdae7e6d805 182 } while (__STREXW(newValue, valuePtr));
borlanic 0:fbdae7e6d805 183 return newValue;
borlanic 0:fbdae7e6d805 184 }
borlanic 0:fbdae7e6d805 185
borlanic 0:fbdae7e6d805 186
borlanic 0:fbdae7e6d805 187 uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
borlanic 0:fbdae7e6d805 188 {
borlanic 0:fbdae7e6d805 189 uint8_t newValue;
borlanic 0:fbdae7e6d805 190 do {
borlanic 0:fbdae7e6d805 191 newValue = __LDREXB(valuePtr) - delta;
borlanic 0:fbdae7e6d805 192 } while (__STREXB(newValue, valuePtr));
borlanic 0:fbdae7e6d805 193 return newValue;
borlanic 0:fbdae7e6d805 194 }
borlanic 0:fbdae7e6d805 195
borlanic 0:fbdae7e6d805 196 uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
borlanic 0:fbdae7e6d805 197 {
borlanic 0:fbdae7e6d805 198 uint16_t newValue;
borlanic 0:fbdae7e6d805 199 do {
borlanic 0:fbdae7e6d805 200 newValue = __LDREXH(valuePtr) - delta;
borlanic 0:fbdae7e6d805 201 } while (__STREXH(newValue, valuePtr));
borlanic 0:fbdae7e6d805 202 return newValue;
borlanic 0:fbdae7e6d805 203 }
borlanic 0:fbdae7e6d805 204
borlanic 0:fbdae7e6d805 205 uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
borlanic 0:fbdae7e6d805 206 {
borlanic 0:fbdae7e6d805 207 uint32_t newValue;
borlanic 0:fbdae7e6d805 208 do {
borlanic 0:fbdae7e6d805 209 newValue = __LDREXW(valuePtr) - delta;
borlanic 0:fbdae7e6d805 210 } while (__STREXW(newValue, valuePtr));
borlanic 0:fbdae7e6d805 211 return newValue;
borlanic 0:fbdae7e6d805 212 }
borlanic 0:fbdae7e6d805 213
borlanic 0:fbdae7e6d805 214 #else
borlanic 0:fbdae7e6d805 215
borlanic 0:fbdae7e6d805 216 bool core_util_atomic_cas_u8(volatile uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
borlanic 0:fbdae7e6d805 217 {
borlanic 0:fbdae7e6d805 218 bool success;
borlanic 0:fbdae7e6d805 219 uint8_t currentValue;
borlanic 0:fbdae7e6d805 220 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 221 currentValue = *ptr;
borlanic 0:fbdae7e6d805 222 if (currentValue == *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 223 *ptr = desiredValue;
borlanic 0:fbdae7e6d805 224 success = true;
borlanic 0:fbdae7e6d805 225 } else {
borlanic 0:fbdae7e6d805 226 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 227 success = false;
borlanic 0:fbdae7e6d805 228 }
borlanic 0:fbdae7e6d805 229 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 230 return success;
borlanic 0:fbdae7e6d805 231 }
borlanic 0:fbdae7e6d805 232
borlanic 0:fbdae7e6d805 233 bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
borlanic 0:fbdae7e6d805 234 {
borlanic 0:fbdae7e6d805 235 bool success;
borlanic 0:fbdae7e6d805 236 uint16_t currentValue;
borlanic 0:fbdae7e6d805 237 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 238 currentValue = *ptr;
borlanic 0:fbdae7e6d805 239 if (currentValue == *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 240 *ptr = desiredValue;
borlanic 0:fbdae7e6d805 241 success = true;
borlanic 0:fbdae7e6d805 242 } else {
borlanic 0:fbdae7e6d805 243 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 244 success = false;
borlanic 0:fbdae7e6d805 245 }
borlanic 0:fbdae7e6d805 246 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 247 return success;
borlanic 0:fbdae7e6d805 248 }
borlanic 0:fbdae7e6d805 249
borlanic 0:fbdae7e6d805 250
borlanic 0:fbdae7e6d805 251 bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
borlanic 0:fbdae7e6d805 252 {
borlanic 0:fbdae7e6d805 253 bool success;
borlanic 0:fbdae7e6d805 254 uint32_t currentValue;
borlanic 0:fbdae7e6d805 255 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 256 currentValue = *ptr;
borlanic 0:fbdae7e6d805 257 if (currentValue == *expectedCurrentValue) {
borlanic 0:fbdae7e6d805 258 *ptr = desiredValue;
borlanic 0:fbdae7e6d805 259 success = true;
borlanic 0:fbdae7e6d805 260 } else {
borlanic 0:fbdae7e6d805 261 *expectedCurrentValue = currentValue;
borlanic 0:fbdae7e6d805 262 success = false;
borlanic 0:fbdae7e6d805 263 }
borlanic 0:fbdae7e6d805 264 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 265 return success;
borlanic 0:fbdae7e6d805 266 }
borlanic 0:fbdae7e6d805 267
borlanic 0:fbdae7e6d805 268
borlanic 0:fbdae7e6d805 269 uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
borlanic 0:fbdae7e6d805 270 {
borlanic 0:fbdae7e6d805 271 uint8_t newValue;
borlanic 0:fbdae7e6d805 272 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 273 newValue = *valuePtr + delta;
borlanic 0:fbdae7e6d805 274 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 275 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 276 return newValue;
borlanic 0:fbdae7e6d805 277 }
borlanic 0:fbdae7e6d805 278
borlanic 0:fbdae7e6d805 279 uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
borlanic 0:fbdae7e6d805 280 {
borlanic 0:fbdae7e6d805 281 uint16_t newValue;
borlanic 0:fbdae7e6d805 282 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 283 newValue = *valuePtr + delta;
borlanic 0:fbdae7e6d805 284 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 285 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 286 return newValue;
borlanic 0:fbdae7e6d805 287 }
borlanic 0:fbdae7e6d805 288
borlanic 0:fbdae7e6d805 289 uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
borlanic 0:fbdae7e6d805 290 {
borlanic 0:fbdae7e6d805 291 uint32_t newValue;
borlanic 0:fbdae7e6d805 292 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 293 newValue = *valuePtr + delta;
borlanic 0:fbdae7e6d805 294 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 295 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 296 return newValue;
borlanic 0:fbdae7e6d805 297 }
borlanic 0:fbdae7e6d805 298
borlanic 0:fbdae7e6d805 299
borlanic 0:fbdae7e6d805 300 uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
borlanic 0:fbdae7e6d805 301 {
borlanic 0:fbdae7e6d805 302 uint8_t newValue;
borlanic 0:fbdae7e6d805 303 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 304 newValue = *valuePtr - delta;
borlanic 0:fbdae7e6d805 305 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 306 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 307 return newValue;
borlanic 0:fbdae7e6d805 308 }
borlanic 0:fbdae7e6d805 309
borlanic 0:fbdae7e6d805 310 uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
borlanic 0:fbdae7e6d805 311 {
borlanic 0:fbdae7e6d805 312 uint16_t newValue;
borlanic 0:fbdae7e6d805 313 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 314 newValue = *valuePtr - delta;
borlanic 0:fbdae7e6d805 315 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 316 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 317 return newValue;
borlanic 0:fbdae7e6d805 318 }
borlanic 0:fbdae7e6d805 319
borlanic 0:fbdae7e6d805 320 uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
borlanic 0:fbdae7e6d805 321 {
borlanic 0:fbdae7e6d805 322 uint32_t newValue;
borlanic 0:fbdae7e6d805 323 core_util_critical_section_enter();
borlanic 0:fbdae7e6d805 324 newValue = *valuePtr - delta;
borlanic 0:fbdae7e6d805 325 *valuePtr = newValue;
borlanic 0:fbdae7e6d805 326 core_util_critical_section_exit();
borlanic 0:fbdae7e6d805 327 return newValue;
borlanic 0:fbdae7e6d805 328 }
borlanic 0:fbdae7e6d805 329
borlanic 0:fbdae7e6d805 330 #endif
borlanic 0:fbdae7e6d805 331
borlanic 0:fbdae7e6d805 332
borlanic 0:fbdae7e6d805 333 bool core_util_atomic_cas_ptr(void * volatile *ptr, void **expectedCurrentValue, void *desiredValue) {
borlanic 0:fbdae7e6d805 334 return core_util_atomic_cas_u32(
borlanic 0:fbdae7e6d805 335 (volatile uint32_t *)ptr,
borlanic 0:fbdae7e6d805 336 (uint32_t *)expectedCurrentValue,
borlanic 0:fbdae7e6d805 337 (uint32_t)desiredValue);
borlanic 0:fbdae7e6d805 338 }
borlanic 0:fbdae7e6d805 339
borlanic 0:fbdae7e6d805 340 void *core_util_atomic_incr_ptr(void * volatile *valuePtr, ptrdiff_t delta) {
borlanic 0:fbdae7e6d805 341 return (void *)core_util_atomic_incr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
borlanic 0:fbdae7e6d805 342 }
borlanic 0:fbdae7e6d805 343
borlanic 0:fbdae7e6d805 344 void *core_util_atomic_decr_ptr(void * volatile *valuePtr, ptrdiff_t delta) {
borlanic 0:fbdae7e6d805 345 return (void *)core_util_atomic_decr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
borlanic 0:fbdae7e6d805 346 }
borlanic 0:fbdae7e6d805 347