EL4121 Embedded System / mbed-os

mbed-os

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platform/mbed_critical.c@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /*
be_bryan 0:b74591d5ab33 2 * Copyright (c) 2015-2016, ARM Limited, All Rights Reserved
be_bryan 0:b74591d5ab33 3 * SPDX-License-Identifier: Apache-2.0
be_bryan 0:b74591d5ab33 4 *
be_bryan 0:b74591d5ab33 5 * Licensed under the Apache License, Version 2.0 (the "License"); you may
be_bryan 0:b74591d5ab33 6 * not use this file except in compliance with the License.
be_bryan 0:b74591d5ab33 7 * You may obtain a copy of the License at
be_bryan 0:b74591d5ab33 8 *
be_bryan 0:b74591d5ab33 9 * http://www.apache.org/licenses/LICENSE-2.0
be_bryan 0:b74591d5ab33 10 *
be_bryan 0:b74591d5ab33 11 * Unless required by applicable law or agreed to in writing, software
be_bryan 0:b74591d5ab33 12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
be_bryan 0:b74591d5ab33 13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
be_bryan 0:b74591d5ab33 14 * See the License for the specific language governing permissions and
be_bryan 0:b74591d5ab33 15 * limitations under the License.
be_bryan 0:b74591d5ab33 16 */
be_bryan 0:b74591d5ab33 17
be_bryan 0:b74591d5ab33 18 /* Declare __STDC_LIMIT_MACROS so stdint.h defines UINT32_MAX when using C++ */
be_bryan 0:b74591d5ab33 19 #define __STDC_LIMIT_MACROS
be_bryan 0:b74591d5ab33 20 #include "platform/mbed_critical.h"
be_bryan 0:b74591d5ab33 21
be_bryan 0:b74591d5ab33 22 #include "cmsis.h"
be_bryan 0:b74591d5ab33 23 #include "platform/mbed_assert.h"
be_bryan 0:b74591d5ab33 24 #include "platform/mbed_toolchain.h"
be_bryan 0:b74591d5ab33 25
be_bryan 0:b74591d5ab33 26 static volatile uint32_t interrupt_enable_counter = 0;
be_bryan 0:b74591d5ab33 27 static volatile bool critical_interrupts_disabled = false;
be_bryan 0:b74591d5ab33 28
be_bryan 0:b74591d5ab33 29 bool core_util_are_interrupts_enabled(void)
be_bryan 0:b74591d5ab33 30 {
be_bryan 0:b74591d5ab33 31 #if defined(__CORTEX_A9)
be_bryan 0:b74591d5ab33 32 return ((__get_CPSR() & 0x80) == 0);
be_bryan 0:b74591d5ab33 33 #else
be_bryan 0:b74591d5ab33 34 return ((__get_PRIMASK() & 0x1) == 0);
be_bryan 0:b74591d5ab33 35 #endif
be_bryan 0:b74591d5ab33 36 }
be_bryan 0:b74591d5ab33 37
be_bryan 0:b74591d5ab33 38 bool core_util_is_isr_active(void)
be_bryan 0:b74591d5ab33 39 {
be_bryan 0:b74591d5ab33 40 #if defined(__CORTEX_A9)
be_bryan 0:b74591d5ab33 41 switch(__get_CPSR() & 0x1FU) {
be_bryan 0:b74591d5ab33 42 case CPSR_M_USR:
be_bryan 0:b74591d5ab33 43 case CPSR_M_SYS:
be_bryan 0:b74591d5ab33 44 return false;
be_bryan 0:b74591d5ab33 45 case CPSR_M_SVC:
be_bryan 0:b74591d5ab33 46 default:
be_bryan 0:b74591d5ab33 47 return true;
be_bryan 0:b74591d5ab33 48 }
be_bryan 0:b74591d5ab33 49 #else
be_bryan 0:b74591d5ab33 50 return (__get_IPSR() != 0U);
be_bryan 0:b74591d5ab33 51 #endif
be_bryan 0:b74591d5ab33 52 }
be_bryan 0:b74591d5ab33 53
be_bryan 0:b74591d5ab33 54 MBED_WEAK void core_util_critical_section_enter(void)
be_bryan 0:b74591d5ab33 55 {
be_bryan 0:b74591d5ab33 56 bool interrupts_disabled = !core_util_are_interrupts_enabled();
be_bryan 0:b74591d5ab33 57 __disable_irq();
be_bryan 0:b74591d5ab33 58
be_bryan 0:b74591d5ab33 59 /* Save the interrupt disabled state as it was prior to any nested critical section lock use */
be_bryan 0:b74591d5ab33 60 if (!interrupt_enable_counter) {
be_bryan 0:b74591d5ab33 61 critical_interrupts_disabled = interrupts_disabled;
be_bryan 0:b74591d5ab33 62 }
be_bryan 0:b74591d5ab33 63
be_bryan 0:b74591d5ab33 64 /* If the interrupt_enable_counter overflows or we are in a nested critical section and interrupts
be_bryan 0:b74591d5ab33 65 are enabled, then something has gone badly wrong thus assert an error.
be_bryan 0:b74591d5ab33 66 */
be_bryan 0:b74591d5ab33 67 MBED_ASSERT(interrupt_enable_counter < UINT32_MAX);
be_bryan 0:b74591d5ab33 68 // FIXME
be_bryan 0:b74591d5ab33 69 #ifndef FEATURE_UVISOR
be_bryan 0:b74591d5ab33 70 if (interrupt_enable_counter > 0) {
be_bryan 0:b74591d5ab33 71 MBED_ASSERT(interrupts_disabled);
be_bryan 0:b74591d5ab33 72 }
be_bryan 0:b74591d5ab33 73 #else
be_bryan 0:b74591d5ab33 74 #warning "core_util_critical_section_enter needs fixing to work from unprivileged code"
be_bryan 0:b74591d5ab33 75 #endif /* FEATURE_UVISOR */
be_bryan 0:b74591d5ab33 76 interrupt_enable_counter++;
be_bryan 0:b74591d5ab33 77 }
be_bryan 0:b74591d5ab33 78
be_bryan 0:b74591d5ab33 79 MBED_WEAK void core_util_critical_section_exit(void)
be_bryan 0:b74591d5ab33 80 {
be_bryan 0:b74591d5ab33 81 /* If critical_section_enter has not previously been called, do nothing */
be_bryan 0:b74591d5ab33 82 if (interrupt_enable_counter) {
be_bryan 0:b74591d5ab33 83
be_bryan 0:b74591d5ab33 84 // FIXME
be_bryan 0:b74591d5ab33 85 #ifndef FEATURE_UVISOR
be_bryan 0:b74591d5ab33 86 bool interrupts_disabled = !core_util_are_interrupts_enabled(); /* get the current interrupt disabled state */
be_bryan 0:b74591d5ab33 87
be_bryan 0:b74591d5ab33 88 MBED_ASSERT(interrupts_disabled); /* Interrupts must be disabled on invoking an exit from a critical section */
be_bryan 0:b74591d5ab33 89 #else
be_bryan 0:b74591d5ab33 90 #warning "core_util_critical_section_exit needs fixing to work from unprivileged code"
be_bryan 0:b74591d5ab33 91 #endif /* FEATURE_UVISOR */
be_bryan 0:b74591d5ab33 92
be_bryan 0:b74591d5ab33 93 interrupt_enable_counter--;
be_bryan 0:b74591d5ab33 94
be_bryan 0:b74591d5ab33 95 /* Only re-enable interrupts if we are exiting the last of the nested critical sections and
be_bryan 0:b74591d5ab33 96 interrupts were enabled on entry to the first critical section.
be_bryan 0:b74591d5ab33 97 */
be_bryan 0:b74591d5ab33 98 if (!interrupt_enable_counter && !critical_interrupts_disabled) {
be_bryan 0:b74591d5ab33 99 __enable_irq();
be_bryan 0:b74591d5ab33 100 }
be_bryan 0:b74591d5ab33 101 }
be_bryan 0:b74591d5ab33 102 }
be_bryan 0:b74591d5ab33 103
be_bryan 0:b74591d5ab33 104 #if __EXCLUSIVE_ACCESS
be_bryan 0:b74591d5ab33 105
be_bryan 0:b74591d5ab33 106 /* Supress __ldrex and __strex deprecated warnings - "#3731-D: intrinsic is deprecated" */
be_bryan 0:b74591d5ab33 107 #if defined (__CC_ARM)
be_bryan 0:b74591d5ab33 108 #pragma diag_suppress 3731
be_bryan 0:b74591d5ab33 109 #endif
be_bryan 0:b74591d5ab33 110
be_bryan 0:b74591d5ab33 111 bool core_util_atomic_cas_u8(uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
be_bryan 0:b74591d5ab33 112 {
be_bryan 0:b74591d5ab33 113 do {
be_bryan 0:b74591d5ab33 114 uint8_t currentValue = __LDREXB((volatile uint8_t*)ptr);
be_bryan 0:b74591d5ab33 115 if (currentValue != *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 116 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 117 __CLREX();
be_bryan 0:b74591d5ab33 118 return false;
be_bryan 0:b74591d5ab33 119 }
be_bryan 0:b74591d5ab33 120 } while (__STREXB(desiredValue, (volatile uint8_t*)ptr));
be_bryan 0:b74591d5ab33 121 return true;
be_bryan 0:b74591d5ab33 122 }
be_bryan 0:b74591d5ab33 123
be_bryan 0:b74591d5ab33 124 bool core_util_atomic_cas_u16(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
be_bryan 0:b74591d5ab33 125 {
be_bryan 0:b74591d5ab33 126 do {
be_bryan 0:b74591d5ab33 127 uint16_t currentValue = __LDREXH((volatile uint16_t*)ptr);
be_bryan 0:b74591d5ab33 128 if (currentValue != *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 129 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 130 __CLREX();
be_bryan 0:b74591d5ab33 131 return false;
be_bryan 0:b74591d5ab33 132 }
be_bryan 0:b74591d5ab33 133 } while (__STREXH(desiredValue, (volatile uint16_t*)ptr));
be_bryan 0:b74591d5ab33 134 return true;
be_bryan 0:b74591d5ab33 135 }
be_bryan 0:b74591d5ab33 136
be_bryan 0:b74591d5ab33 137
be_bryan 0:b74591d5ab33 138 bool core_util_atomic_cas_u32(uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
be_bryan 0:b74591d5ab33 139 {
be_bryan 0:b74591d5ab33 140 do {
be_bryan 0:b74591d5ab33 141 uint32_t currentValue = __LDREXW((volatile uint32_t*)ptr);
be_bryan 0:b74591d5ab33 142 if (currentValue != *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 143 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 144 __CLREX();
be_bryan 0:b74591d5ab33 145 return false;
be_bryan 0:b74591d5ab33 146 }
be_bryan 0:b74591d5ab33 147 } while (__STREXW(desiredValue, (volatile uint32_t*)ptr));
be_bryan 0:b74591d5ab33 148 return true;
be_bryan 0:b74591d5ab33 149 }
be_bryan 0:b74591d5ab33 150
be_bryan 0:b74591d5ab33 151 uint8_t core_util_atomic_incr_u8(uint8_t *valuePtr, uint8_t delta)
be_bryan 0:b74591d5ab33 152 {
be_bryan 0:b74591d5ab33 153 uint8_t newValue;
be_bryan 0:b74591d5ab33 154 do {
be_bryan 0:b74591d5ab33 155 newValue = __LDREXB((volatile uint8_t*)valuePtr) + delta;
be_bryan 0:b74591d5ab33 156 } while (__STREXB(newValue, (volatile uint8_t*)valuePtr));
be_bryan 0:b74591d5ab33 157 return newValue;
be_bryan 0:b74591d5ab33 158 }
be_bryan 0:b74591d5ab33 159
be_bryan 0:b74591d5ab33 160 uint16_t core_util_atomic_incr_u16(uint16_t *valuePtr, uint16_t delta)
be_bryan 0:b74591d5ab33 161 {
be_bryan 0:b74591d5ab33 162 uint16_t newValue;
be_bryan 0:b74591d5ab33 163 do {
be_bryan 0:b74591d5ab33 164 newValue = __LDREXH((volatile uint16_t*)valuePtr) + delta;
be_bryan 0:b74591d5ab33 165 } while (__STREXH(newValue, (volatile uint16_t*)valuePtr));
be_bryan 0:b74591d5ab33 166 return newValue;
be_bryan 0:b74591d5ab33 167 }
be_bryan 0:b74591d5ab33 168
be_bryan 0:b74591d5ab33 169 uint32_t core_util_atomic_incr_u32(uint32_t *valuePtr, uint32_t delta)
be_bryan 0:b74591d5ab33 170 {
be_bryan 0:b74591d5ab33 171 uint32_t newValue;
be_bryan 0:b74591d5ab33 172 do {
be_bryan 0:b74591d5ab33 173 newValue = __LDREXW((volatile uint32_t*)valuePtr) + delta;
be_bryan 0:b74591d5ab33 174 } while (__STREXW(newValue, (volatile uint32_t*)valuePtr));
be_bryan 0:b74591d5ab33 175 return newValue;
be_bryan 0:b74591d5ab33 176 }
be_bryan 0:b74591d5ab33 177
be_bryan 0:b74591d5ab33 178
be_bryan 0:b74591d5ab33 179 uint8_t core_util_atomic_decr_u8(uint8_t *valuePtr, uint8_t delta)
be_bryan 0:b74591d5ab33 180 {
be_bryan 0:b74591d5ab33 181 uint8_t newValue;
be_bryan 0:b74591d5ab33 182 do {
be_bryan 0:b74591d5ab33 183 newValue = __LDREXB((volatile uint8_t*)valuePtr) - delta;
be_bryan 0:b74591d5ab33 184 } while (__STREXB(newValue, (volatile uint8_t*)valuePtr));
be_bryan 0:b74591d5ab33 185 return newValue;
be_bryan 0:b74591d5ab33 186 }
be_bryan 0:b74591d5ab33 187
be_bryan 0:b74591d5ab33 188 uint16_t core_util_atomic_decr_u16(uint16_t *valuePtr, uint16_t delta)
be_bryan 0:b74591d5ab33 189 {
be_bryan 0:b74591d5ab33 190 uint16_t newValue;
be_bryan 0:b74591d5ab33 191 do {
be_bryan 0:b74591d5ab33 192 newValue = __LDREXH((volatile uint16_t*)valuePtr) - delta;
be_bryan 0:b74591d5ab33 193 } while (__STREXH(newValue, (volatile uint16_t*)valuePtr));
be_bryan 0:b74591d5ab33 194 return newValue;
be_bryan 0:b74591d5ab33 195 }
be_bryan 0:b74591d5ab33 196
be_bryan 0:b74591d5ab33 197 uint32_t core_util_atomic_decr_u32(uint32_t *valuePtr, uint32_t delta)
be_bryan 0:b74591d5ab33 198 {
be_bryan 0:b74591d5ab33 199 uint32_t newValue;
be_bryan 0:b74591d5ab33 200 do {
be_bryan 0:b74591d5ab33 201 newValue = __LDREXW((volatile uint32_t*)valuePtr) - delta;
be_bryan 0:b74591d5ab33 202 } while (__STREXW(newValue, (volatile uint32_t*)valuePtr));
be_bryan 0:b74591d5ab33 203 return newValue;
be_bryan 0:b74591d5ab33 204 }
be_bryan 0:b74591d5ab33 205
be_bryan 0:b74591d5ab33 206 #else
be_bryan 0:b74591d5ab33 207
be_bryan 0:b74591d5ab33 208 bool core_util_atomic_cas_u8(uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
be_bryan 0:b74591d5ab33 209 {
be_bryan 0:b74591d5ab33 210 bool success;
be_bryan 0:b74591d5ab33 211 uint8_t currentValue;
be_bryan 0:b74591d5ab33 212 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 213 currentValue = *ptr;
be_bryan 0:b74591d5ab33 214 if (currentValue == *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 215 *ptr = desiredValue;
be_bryan 0:b74591d5ab33 216 success = true;
be_bryan 0:b74591d5ab33 217 } else {
be_bryan 0:b74591d5ab33 218 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 219 success = false;
be_bryan 0:b74591d5ab33 220 }
be_bryan 0:b74591d5ab33 221 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 222 return success;
be_bryan 0:b74591d5ab33 223 }
be_bryan 0:b74591d5ab33 224
be_bryan 0:b74591d5ab33 225 bool core_util_atomic_cas_u16(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
be_bryan 0:b74591d5ab33 226 {
be_bryan 0:b74591d5ab33 227 bool success;
be_bryan 0:b74591d5ab33 228 uint16_t currentValue;
be_bryan 0:b74591d5ab33 229 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 230 currentValue = *ptr;
be_bryan 0:b74591d5ab33 231 if (currentValue == *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 232 *ptr = desiredValue;
be_bryan 0:b74591d5ab33 233 success = true;
be_bryan 0:b74591d5ab33 234 } else {
be_bryan 0:b74591d5ab33 235 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 236 success = false;
be_bryan 0:b74591d5ab33 237 }
be_bryan 0:b74591d5ab33 238 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 239 return success;
be_bryan 0:b74591d5ab33 240 }
be_bryan 0:b74591d5ab33 241
be_bryan 0:b74591d5ab33 242
be_bryan 0:b74591d5ab33 243 bool core_util_atomic_cas_u32(uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
be_bryan 0:b74591d5ab33 244 {
be_bryan 0:b74591d5ab33 245 bool success;
be_bryan 0:b74591d5ab33 246 uint32_t currentValue;
be_bryan 0:b74591d5ab33 247 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 248 currentValue = *ptr;
be_bryan 0:b74591d5ab33 249 if (currentValue == *expectedCurrentValue) {
be_bryan 0:b74591d5ab33 250 *ptr = desiredValue;
be_bryan 0:b74591d5ab33 251 success = true;
be_bryan 0:b74591d5ab33 252 } else {
be_bryan 0:b74591d5ab33 253 *expectedCurrentValue = currentValue;
be_bryan 0:b74591d5ab33 254 success = false;
be_bryan 0:b74591d5ab33 255 }
be_bryan 0:b74591d5ab33 256 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 257 return success;
be_bryan 0:b74591d5ab33 258 }
be_bryan 0:b74591d5ab33 259
be_bryan 0:b74591d5ab33 260
be_bryan 0:b74591d5ab33 261 uint8_t core_util_atomic_incr_u8(uint8_t *valuePtr, uint8_t delta)
be_bryan 0:b74591d5ab33 262 {
be_bryan 0:b74591d5ab33 263 uint8_t newValue;
be_bryan 0:b74591d5ab33 264 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 265 newValue = *valuePtr + delta;
be_bryan 0:b74591d5ab33 266 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 267 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 268 return newValue;
be_bryan 0:b74591d5ab33 269 }
be_bryan 0:b74591d5ab33 270
be_bryan 0:b74591d5ab33 271 uint16_t core_util_atomic_incr_u16(uint16_t *valuePtr, uint16_t delta)
be_bryan 0:b74591d5ab33 272 {
be_bryan 0:b74591d5ab33 273 uint16_t newValue;
be_bryan 0:b74591d5ab33 274 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 275 newValue = *valuePtr + delta;
be_bryan 0:b74591d5ab33 276 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 277 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 278 return newValue;
be_bryan 0:b74591d5ab33 279 }
be_bryan 0:b74591d5ab33 280
be_bryan 0:b74591d5ab33 281 uint32_t core_util_atomic_incr_u32(uint32_t *valuePtr, uint32_t delta)
be_bryan 0:b74591d5ab33 282 {
be_bryan 0:b74591d5ab33 283 uint32_t newValue;
be_bryan 0:b74591d5ab33 284 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 285 newValue = *valuePtr + delta;
be_bryan 0:b74591d5ab33 286 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 287 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 288 return newValue;
be_bryan 0:b74591d5ab33 289 }
be_bryan 0:b74591d5ab33 290
be_bryan 0:b74591d5ab33 291
be_bryan 0:b74591d5ab33 292 uint8_t core_util_atomic_decr_u8(uint8_t *valuePtr, uint8_t delta)
be_bryan 0:b74591d5ab33 293 {
be_bryan 0:b74591d5ab33 294 uint8_t newValue;
be_bryan 0:b74591d5ab33 295 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 296 newValue = *valuePtr - delta;
be_bryan 0:b74591d5ab33 297 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 298 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 299 return newValue;
be_bryan 0:b74591d5ab33 300 }
be_bryan 0:b74591d5ab33 301
be_bryan 0:b74591d5ab33 302 uint16_t core_util_atomic_decr_u16(uint16_t *valuePtr, uint16_t delta)
be_bryan 0:b74591d5ab33 303 {
be_bryan 0:b74591d5ab33 304 uint16_t newValue;
be_bryan 0:b74591d5ab33 305 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 306 newValue = *valuePtr - delta;
be_bryan 0:b74591d5ab33 307 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 308 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 309 return newValue;
be_bryan 0:b74591d5ab33 310 }
be_bryan 0:b74591d5ab33 311
be_bryan 0:b74591d5ab33 312 uint32_t core_util_atomic_decr_u32(uint32_t *valuePtr, uint32_t delta)
be_bryan 0:b74591d5ab33 313 {
be_bryan 0:b74591d5ab33 314 uint32_t newValue;
be_bryan 0:b74591d5ab33 315 core_util_critical_section_enter();
be_bryan 0:b74591d5ab33 316 newValue = *valuePtr - delta;
be_bryan 0:b74591d5ab33 317 *valuePtr = newValue;
be_bryan 0:b74591d5ab33 318 core_util_critical_section_exit();
be_bryan 0:b74591d5ab33 319 return newValue;
be_bryan 0:b74591d5ab33 320 }
be_bryan 0:b74591d5ab33 321
be_bryan 0:b74591d5ab33 322 #endif
be_bryan 0:b74591d5ab33 323
be_bryan 0:b74591d5ab33 324
be_bryan 0:b74591d5ab33 325 bool core_util_atomic_cas_ptr(void **ptr, void **expectedCurrentValue, void *desiredValue) {
be_bryan 0:b74591d5ab33 326 return core_util_atomic_cas_u32(
be_bryan 0:b74591d5ab33 327 (uint32_t *)ptr,
be_bryan 0:b74591d5ab33 328 (uint32_t *)expectedCurrentValue,
be_bryan 0:b74591d5ab33 329 (uint32_t)desiredValue);
be_bryan 0:b74591d5ab33 330 }
be_bryan 0:b74591d5ab33 331
be_bryan 0:b74591d5ab33 332 void *core_util_atomic_incr_ptr(void **valuePtr, ptrdiff_t delta) {
be_bryan 0:b74591d5ab33 333 return (void *)core_util_atomic_incr_u32((uint32_t *)valuePtr, (uint32_t)delta);
be_bryan 0:b74591d5ab33 334 }
be_bryan 0:b74591d5ab33 335
be_bryan 0:b74591d5ab33 336 void *core_util_atomic_decr_ptr(void **valuePtr, ptrdiff_t delta) {
be_bryan 0:b74591d5ab33 337 return (void *)core_util_atomic_decr_u32((uint32_t *)valuePtr, (uint32_t)delta);
be_bryan 0:b74591d5ab33 338 }
be_bryan 0:b74591d5ab33 339