mbed library sources. Supersedes mbed-src. RTC working even after reset
Fork of mbed-dev by
common/mbed_critical.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)
- Committer:
- <>
- Date:
- Fri Sep 02 15:07:44 2016 +0100
- Revision:
- 144:ef7eb2e8f9f7
- Child:
- 147:30b64687e01f
This updates the lib to the mbed lib v125
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2015-2016, ARM Limited, All Rights Reserved |
<> | 144:ef7eb2e8f9f7 | 3 | * SPDX-License-Identifier: Apache-2.0 |
<> | 144:ef7eb2e8f9f7 | 4 | * |
<> | 144:ef7eb2e8f9f7 | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
<> | 144:ef7eb2e8f9f7 | 6 | * not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 7 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 8 | * |
<> | 144:ef7eb2e8f9f7 | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 10 | * |
<> | 144:ef7eb2e8f9f7 | 11 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
<> | 144:ef7eb2e8f9f7 | 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 14 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 15 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 16 | */ |
<> | 144:ef7eb2e8f9f7 | 17 | |
<> | 144:ef7eb2e8f9f7 | 18 | #include "critical.h" |
<> | 144:ef7eb2e8f9f7 | 19 | |
<> | 144:ef7eb2e8f9f7 | 20 | #include "cmsis.h" |
<> | 144:ef7eb2e8f9f7 | 21 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 22 | |
<> | 144:ef7eb2e8f9f7 | 23 | #define EXCLUSIVE_ACCESS (!defined (__CORTEX_M0) && !defined (__CORTEX_M0PLUS)) |
<> | 144:ef7eb2e8f9f7 | 24 | |
<> | 144:ef7eb2e8f9f7 | 25 | static volatile uint32_t interrupt_enable_counter = 0; |
<> | 144:ef7eb2e8f9f7 | 26 | static volatile bool critical_interrupts_disabled = false; |
<> | 144:ef7eb2e8f9f7 | 27 | |
<> | 144:ef7eb2e8f9f7 | 28 | bool core_util_are_interrupts_enabled(void) |
<> | 144:ef7eb2e8f9f7 | 29 | { |
<> | 144:ef7eb2e8f9f7 | 30 | #if defined(__CORTEX_A9) |
<> | 144:ef7eb2e8f9f7 | 31 | return ((__get_CPSR() & 0x80) == 0); |
<> | 144:ef7eb2e8f9f7 | 32 | #else |
<> | 144:ef7eb2e8f9f7 | 33 | return ((__get_PRIMASK() & 0x1) == 0); |
<> | 144:ef7eb2e8f9f7 | 34 | #endif |
<> | 144:ef7eb2e8f9f7 | 35 | } |
<> | 144:ef7eb2e8f9f7 | 36 | |
<> | 144:ef7eb2e8f9f7 | 37 | void core_util_critical_section_enter(void) |
<> | 144:ef7eb2e8f9f7 | 38 | { |
<> | 144:ef7eb2e8f9f7 | 39 | bool interrupts_disabled = !core_util_are_interrupts_enabled(); |
<> | 144:ef7eb2e8f9f7 | 40 | __disable_irq(); |
<> | 144:ef7eb2e8f9f7 | 41 | |
<> | 144:ef7eb2e8f9f7 | 42 | /* Save the interrupt disabled state as it was prior to any nested critical section lock use */ |
<> | 144:ef7eb2e8f9f7 | 43 | if (!interrupt_enable_counter) { |
<> | 144:ef7eb2e8f9f7 | 44 | critical_interrupts_disabled = interrupts_disabled; |
<> | 144:ef7eb2e8f9f7 | 45 | } |
<> | 144:ef7eb2e8f9f7 | 46 | |
<> | 144:ef7eb2e8f9f7 | 47 | /* If the interrupt_enable_counter overflows or we are in a nested critical section and interrupts |
<> | 144:ef7eb2e8f9f7 | 48 | are enabled, then something has gone badly wrong thus assert an error. |
<> | 144:ef7eb2e8f9f7 | 49 | */ |
<> | 144:ef7eb2e8f9f7 | 50 | MBED_ASSERT(interrupt_enable_counter < UINT32_MAX); |
<> | 144:ef7eb2e8f9f7 | 51 | // FIXME |
<> | 144:ef7eb2e8f9f7 | 52 | #ifndef FEATURE_UVISOR |
<> | 144:ef7eb2e8f9f7 | 53 | if (interrupt_enable_counter > 0) { |
<> | 144:ef7eb2e8f9f7 | 54 | MBED_ASSERT(interrupts_disabled); |
<> | 144:ef7eb2e8f9f7 | 55 | } |
<> | 144:ef7eb2e8f9f7 | 56 | #else |
<> | 144:ef7eb2e8f9f7 | 57 | #warning "core_util_critical_section_enter needs fixing to work from unprivileged code" |
<> | 144:ef7eb2e8f9f7 | 58 | #endif /* FEATURE_UVISOR */ |
<> | 144:ef7eb2e8f9f7 | 59 | interrupt_enable_counter++; |
<> | 144:ef7eb2e8f9f7 | 60 | } |
<> | 144:ef7eb2e8f9f7 | 61 | |
<> | 144:ef7eb2e8f9f7 | 62 | void core_util_critical_section_exit(void) |
<> | 144:ef7eb2e8f9f7 | 63 | { |
<> | 144:ef7eb2e8f9f7 | 64 | /* If critical_section_enter has not previously been called, do nothing */ |
<> | 144:ef7eb2e8f9f7 | 65 | if (interrupt_enable_counter) { |
<> | 144:ef7eb2e8f9f7 | 66 | |
<> | 144:ef7eb2e8f9f7 | 67 | // FIXME |
<> | 144:ef7eb2e8f9f7 | 68 | #ifndef FEATURE_UVISOR |
<> | 144:ef7eb2e8f9f7 | 69 | bool interrupts_disabled = !core_util_are_interrupts_enabled(); /* get the current interrupt disabled state */ |
<> | 144:ef7eb2e8f9f7 | 70 | |
<> | 144:ef7eb2e8f9f7 | 71 | MBED_ASSERT(interrupts_disabled); /* Interrupts must be disabled on invoking an exit from a critical section */ |
<> | 144:ef7eb2e8f9f7 | 72 | #else |
<> | 144:ef7eb2e8f9f7 | 73 | #warning "core_util_critical_section_exit needs fixing to work from unprivileged code" |
<> | 144:ef7eb2e8f9f7 | 74 | #endif /* FEATURE_UVISOR */ |
<> | 144:ef7eb2e8f9f7 | 75 | |
<> | 144:ef7eb2e8f9f7 | 76 | interrupt_enable_counter--; |
<> | 144:ef7eb2e8f9f7 | 77 | |
<> | 144:ef7eb2e8f9f7 | 78 | /* Only re-enable interrupts if we are exiting the last of the nested critical sections and |
<> | 144:ef7eb2e8f9f7 | 79 | interrupts were enabled on entry to the first critical section. |
<> | 144:ef7eb2e8f9f7 | 80 | */ |
<> | 144:ef7eb2e8f9f7 | 81 | if (!interrupt_enable_counter && !critical_interrupts_disabled) { |
<> | 144:ef7eb2e8f9f7 | 82 | __enable_irq(); |
<> | 144:ef7eb2e8f9f7 | 83 | } |
<> | 144:ef7eb2e8f9f7 | 84 | } |
<> | 144:ef7eb2e8f9f7 | 85 | } |
<> | 144:ef7eb2e8f9f7 | 86 | |
<> | 144:ef7eb2e8f9f7 | 87 | #if EXCLUSIVE_ACCESS |
<> | 144:ef7eb2e8f9f7 | 88 | |
<> | 144:ef7eb2e8f9f7 | 89 | bool core_util_atomic_cas_u8(uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 90 | { |
<> | 144:ef7eb2e8f9f7 | 91 | uint8_t currentValue = __LDREXB((volatile uint8_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 92 | if (currentValue != *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 93 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 94 | __CLREX(); |
<> | 144:ef7eb2e8f9f7 | 95 | return false; |
<> | 144:ef7eb2e8f9f7 | 96 | } |
<> | 144:ef7eb2e8f9f7 | 97 | |
<> | 144:ef7eb2e8f9f7 | 98 | return !__STREXB(desiredValue, (volatile uint8_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 99 | } |
<> | 144:ef7eb2e8f9f7 | 100 | |
<> | 144:ef7eb2e8f9f7 | 101 | bool core_util_atomic_cas_u16(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 102 | { |
<> | 144:ef7eb2e8f9f7 | 103 | uint16_t currentValue = __LDREXH((volatile uint16_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 104 | if (currentValue != *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 105 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 106 | __CLREX(); |
<> | 144:ef7eb2e8f9f7 | 107 | return false; |
<> | 144:ef7eb2e8f9f7 | 108 | } |
<> | 144:ef7eb2e8f9f7 | 109 | |
<> | 144:ef7eb2e8f9f7 | 110 | return !__STREXH(desiredValue, (volatile uint16_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 111 | } |
<> | 144:ef7eb2e8f9f7 | 112 | |
<> | 144:ef7eb2e8f9f7 | 113 | |
<> | 144:ef7eb2e8f9f7 | 114 | bool core_util_atomic_cas_u32(uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 115 | { |
<> | 144:ef7eb2e8f9f7 | 116 | uint32_t currentValue = __LDREXW((volatile uint32_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 117 | if (currentValue != *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 118 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 119 | __CLREX(); |
<> | 144:ef7eb2e8f9f7 | 120 | return false; |
<> | 144:ef7eb2e8f9f7 | 121 | } |
<> | 144:ef7eb2e8f9f7 | 122 | |
<> | 144:ef7eb2e8f9f7 | 123 | return !__STREXW(desiredValue, (volatile uint32_t*)ptr); |
<> | 144:ef7eb2e8f9f7 | 124 | } |
<> | 144:ef7eb2e8f9f7 | 125 | |
<> | 144:ef7eb2e8f9f7 | 126 | uint8_t core_util_atomic_incr_u8(uint8_t *valuePtr, uint8_t delta) |
<> | 144:ef7eb2e8f9f7 | 127 | { |
<> | 144:ef7eb2e8f9f7 | 128 | uint8_t newValue; |
<> | 144:ef7eb2e8f9f7 | 129 | do { |
<> | 144:ef7eb2e8f9f7 | 130 | newValue = __LDREXB((volatile uint8_t*)valuePtr) + delta; |
<> | 144:ef7eb2e8f9f7 | 131 | } while (__STREXB(newValue, (volatile uint8_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 132 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 133 | } |
<> | 144:ef7eb2e8f9f7 | 134 | |
<> | 144:ef7eb2e8f9f7 | 135 | uint16_t core_util_atomic_incr_u16(uint16_t *valuePtr, uint16_t delta) |
<> | 144:ef7eb2e8f9f7 | 136 | { |
<> | 144:ef7eb2e8f9f7 | 137 | uint16_t newValue; |
<> | 144:ef7eb2e8f9f7 | 138 | do { |
<> | 144:ef7eb2e8f9f7 | 139 | newValue = __LDREXH((volatile uint16_t*)valuePtr) + delta; |
<> | 144:ef7eb2e8f9f7 | 140 | } while (__STREXH(newValue, (volatile uint16_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 141 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 142 | } |
<> | 144:ef7eb2e8f9f7 | 143 | |
<> | 144:ef7eb2e8f9f7 | 144 | uint32_t core_util_atomic_incr_u32(uint32_t *valuePtr, uint32_t delta) |
<> | 144:ef7eb2e8f9f7 | 145 | { |
<> | 144:ef7eb2e8f9f7 | 146 | uint32_t newValue; |
<> | 144:ef7eb2e8f9f7 | 147 | do { |
<> | 144:ef7eb2e8f9f7 | 148 | newValue = __LDREXW((volatile uint32_t*)valuePtr) + delta; |
<> | 144:ef7eb2e8f9f7 | 149 | } while (__STREXW(newValue, (volatile uint32_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 150 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 151 | } |
<> | 144:ef7eb2e8f9f7 | 152 | |
<> | 144:ef7eb2e8f9f7 | 153 | |
<> | 144:ef7eb2e8f9f7 | 154 | uint8_t core_util_atomic_decr_u8(uint8_t *valuePtr, uint8_t delta) |
<> | 144:ef7eb2e8f9f7 | 155 | { |
<> | 144:ef7eb2e8f9f7 | 156 | uint8_t newValue; |
<> | 144:ef7eb2e8f9f7 | 157 | do { |
<> | 144:ef7eb2e8f9f7 | 158 | newValue = __LDREXB((volatile uint8_t*)valuePtr) - delta; |
<> | 144:ef7eb2e8f9f7 | 159 | } while (__STREXB(newValue, (volatile uint8_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 160 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 161 | } |
<> | 144:ef7eb2e8f9f7 | 162 | |
<> | 144:ef7eb2e8f9f7 | 163 | uint16_t core_util_atomic_decr_u16(uint16_t *valuePtr, uint16_t delta) |
<> | 144:ef7eb2e8f9f7 | 164 | { |
<> | 144:ef7eb2e8f9f7 | 165 | uint16_t newValue; |
<> | 144:ef7eb2e8f9f7 | 166 | do { |
<> | 144:ef7eb2e8f9f7 | 167 | newValue = __LDREXH((volatile uint16_t*)valuePtr) - delta; |
<> | 144:ef7eb2e8f9f7 | 168 | } while (__STREXH(newValue, (volatile uint16_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 169 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 170 | } |
<> | 144:ef7eb2e8f9f7 | 171 | |
<> | 144:ef7eb2e8f9f7 | 172 | uint32_t core_util_atomic_decr_u32(uint32_t *valuePtr, uint32_t delta) |
<> | 144:ef7eb2e8f9f7 | 173 | { |
<> | 144:ef7eb2e8f9f7 | 174 | uint32_t newValue; |
<> | 144:ef7eb2e8f9f7 | 175 | do { |
<> | 144:ef7eb2e8f9f7 | 176 | newValue = __LDREXW((volatile uint32_t*)valuePtr) - delta; |
<> | 144:ef7eb2e8f9f7 | 177 | } while (__STREXW(newValue, (volatile uint32_t*)valuePtr)); |
<> | 144:ef7eb2e8f9f7 | 178 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 179 | } |
<> | 144:ef7eb2e8f9f7 | 180 | |
<> | 144:ef7eb2e8f9f7 | 181 | #else |
<> | 144:ef7eb2e8f9f7 | 182 | |
<> | 144:ef7eb2e8f9f7 | 183 | bool core_util_atomic_cas_u8(uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 184 | { |
<> | 144:ef7eb2e8f9f7 | 185 | bool success; |
<> | 144:ef7eb2e8f9f7 | 186 | uint8_t currentValue; |
<> | 144:ef7eb2e8f9f7 | 187 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 188 | currentValue = *ptr; |
<> | 144:ef7eb2e8f9f7 | 189 | if (currentValue == *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 190 | *ptr = desiredValue; |
<> | 144:ef7eb2e8f9f7 | 191 | success = true; |
<> | 144:ef7eb2e8f9f7 | 192 | } else { |
<> | 144:ef7eb2e8f9f7 | 193 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 194 | success = false; |
<> | 144:ef7eb2e8f9f7 | 195 | } |
<> | 144:ef7eb2e8f9f7 | 196 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 197 | return success; |
<> | 144:ef7eb2e8f9f7 | 198 | } |
<> | 144:ef7eb2e8f9f7 | 199 | |
<> | 144:ef7eb2e8f9f7 | 200 | bool core_util_atomic_cas_u16(uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 201 | { |
<> | 144:ef7eb2e8f9f7 | 202 | bool success; |
<> | 144:ef7eb2e8f9f7 | 203 | uint16_t currentValue; |
<> | 144:ef7eb2e8f9f7 | 204 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 205 | currentValue = *ptr; |
<> | 144:ef7eb2e8f9f7 | 206 | if (currentValue == *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 207 | *ptr = desiredValue; |
<> | 144:ef7eb2e8f9f7 | 208 | success = true; |
<> | 144:ef7eb2e8f9f7 | 209 | } else { |
<> | 144:ef7eb2e8f9f7 | 210 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 211 | success = false; |
<> | 144:ef7eb2e8f9f7 | 212 | } |
<> | 144:ef7eb2e8f9f7 | 213 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 214 | return success; |
<> | 144:ef7eb2e8f9f7 | 215 | } |
<> | 144:ef7eb2e8f9f7 | 216 | |
<> | 144:ef7eb2e8f9f7 | 217 | |
<> | 144:ef7eb2e8f9f7 | 218 | bool core_util_atomic_cas_u32(uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue) |
<> | 144:ef7eb2e8f9f7 | 219 | { |
<> | 144:ef7eb2e8f9f7 | 220 | bool success; |
<> | 144:ef7eb2e8f9f7 | 221 | uint32_t currentValue; |
<> | 144:ef7eb2e8f9f7 | 222 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 223 | currentValue = *ptr; |
<> | 144:ef7eb2e8f9f7 | 224 | if (currentValue == *expectedCurrentValue) { |
<> | 144:ef7eb2e8f9f7 | 225 | *ptr = desiredValue; |
<> | 144:ef7eb2e8f9f7 | 226 | success = true; |
<> | 144:ef7eb2e8f9f7 | 227 | } else { |
<> | 144:ef7eb2e8f9f7 | 228 | *expectedCurrentValue = currentValue; |
<> | 144:ef7eb2e8f9f7 | 229 | success = false; |
<> | 144:ef7eb2e8f9f7 | 230 | } |
<> | 144:ef7eb2e8f9f7 | 231 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 232 | return success; |
<> | 144:ef7eb2e8f9f7 | 233 | } |
<> | 144:ef7eb2e8f9f7 | 234 | |
<> | 144:ef7eb2e8f9f7 | 235 | |
<> | 144:ef7eb2e8f9f7 | 236 | uint8_t core_util_atomic_incr_u8(uint8_t *valuePtr, uint8_t delta) |
<> | 144:ef7eb2e8f9f7 | 237 | { |
<> | 144:ef7eb2e8f9f7 | 238 | uint8_t newValue; |
<> | 144:ef7eb2e8f9f7 | 239 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 240 | newValue = *valuePtr + delta; |
<> | 144:ef7eb2e8f9f7 | 241 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 242 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 243 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 244 | } |
<> | 144:ef7eb2e8f9f7 | 245 | |
<> | 144:ef7eb2e8f9f7 | 246 | uint16_t core_util_atomic_incr_u16(uint16_t *valuePtr, uint16_t delta) |
<> | 144:ef7eb2e8f9f7 | 247 | { |
<> | 144:ef7eb2e8f9f7 | 248 | uint16_t newValue; |
<> | 144:ef7eb2e8f9f7 | 249 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 250 | newValue = *valuePtr + delta; |
<> | 144:ef7eb2e8f9f7 | 251 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 252 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 253 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 254 | } |
<> | 144:ef7eb2e8f9f7 | 255 | |
<> | 144:ef7eb2e8f9f7 | 256 | uint32_t core_util_atomic_incr_u32(uint32_t *valuePtr, uint32_t delta) |
<> | 144:ef7eb2e8f9f7 | 257 | { |
<> | 144:ef7eb2e8f9f7 | 258 | uint32_t newValue; |
<> | 144:ef7eb2e8f9f7 | 259 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 260 | newValue = *valuePtr + delta; |
<> | 144:ef7eb2e8f9f7 | 261 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 262 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 263 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 264 | } |
<> | 144:ef7eb2e8f9f7 | 265 | |
<> | 144:ef7eb2e8f9f7 | 266 | |
<> | 144:ef7eb2e8f9f7 | 267 | uint8_t core_util_atomic_decr_u8(uint8_t *valuePtr, uint8_t delta) |
<> | 144:ef7eb2e8f9f7 | 268 | { |
<> | 144:ef7eb2e8f9f7 | 269 | uint8_t newValue; |
<> | 144:ef7eb2e8f9f7 | 270 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 271 | newValue = *valuePtr - delta; |
<> | 144:ef7eb2e8f9f7 | 272 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 273 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 274 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 275 | } |
<> | 144:ef7eb2e8f9f7 | 276 | |
<> | 144:ef7eb2e8f9f7 | 277 | uint16_t core_util_atomic_decr_u16(uint16_t *valuePtr, uint16_t delta) |
<> | 144:ef7eb2e8f9f7 | 278 | { |
<> | 144:ef7eb2e8f9f7 | 279 | uint16_t newValue; |
<> | 144:ef7eb2e8f9f7 | 280 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 281 | newValue = *valuePtr - delta; |
<> | 144:ef7eb2e8f9f7 | 282 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 283 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 284 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 285 | } |
<> | 144:ef7eb2e8f9f7 | 286 | |
<> | 144:ef7eb2e8f9f7 | 287 | uint32_t core_util_atomic_decr_u32(uint32_t *valuePtr, uint32_t delta) |
<> | 144:ef7eb2e8f9f7 | 288 | { |
<> | 144:ef7eb2e8f9f7 | 289 | uint32_t newValue; |
<> | 144:ef7eb2e8f9f7 | 290 | core_util_critical_section_enter(); |
<> | 144:ef7eb2e8f9f7 | 291 | newValue = *valuePtr - delta; |
<> | 144:ef7eb2e8f9f7 | 292 | *valuePtr = newValue; |
<> | 144:ef7eb2e8f9f7 | 293 | core_util_critical_section_exit(); |
<> | 144:ef7eb2e8f9f7 | 294 | return newValue; |
<> | 144:ef7eb2e8f9f7 | 295 | } |
<> | 144:ef7eb2e8f9f7 | 296 | |
<> | 144:ef7eb2e8f9f7 | 297 | #endif |
<> | 144:ef7eb2e8f9f7 | 298 | |
<> | 144:ef7eb2e8f9f7 | 299 | |
<> | 144:ef7eb2e8f9f7 | 300 | bool core_util_atomic_cas_ptr(void **ptr, void **expectedCurrentValue, void *desiredValue) { |
<> | 144:ef7eb2e8f9f7 | 301 | return core_util_atomic_cas_u32( |
<> | 144:ef7eb2e8f9f7 | 302 | (uint32_t *)ptr, |
<> | 144:ef7eb2e8f9f7 | 303 | (uint32_t *)expectedCurrentValue, |
<> | 144:ef7eb2e8f9f7 | 304 | (uint32_t)desiredValue); |
<> | 144:ef7eb2e8f9f7 | 305 | } |
<> | 144:ef7eb2e8f9f7 | 306 | |
<> | 144:ef7eb2e8f9f7 | 307 | void *core_util_atomic_incr_ptr(void **valuePtr, ptrdiff_t delta) { |
<> | 144:ef7eb2e8f9f7 | 308 | return (void *)core_util_atomic_incr_u32((uint32_t *)valuePtr, (uint32_t)delta); |
<> | 144:ef7eb2e8f9f7 | 309 | } |
<> | 144:ef7eb2e8f9f7 | 310 | |
<> | 144:ef7eb2e8f9f7 | 311 | void *core_util_atomic_decr_ptr(void **valuePtr, ptrdiff_t delta) { |
<> | 144:ef7eb2e8f9f7 | 312 | return (void *)core_util_atomic_decr_u32((uint32_t *)valuePtr, (uint32_t)delta); |
<> | 144:ef7eb2e8f9f7 | 313 | } |
<> | 144:ef7eb2e8f9f7 | 314 |