1 /***********************************************************************************************//**
2 * \file cyabs_rtos_internal.h
3 *
4 * \brief
5 * Internal interface used for RTOS abstraction utilities.
6 ***************************************************************************************************
7 * \copyright
8 * Copyright 2018-2022 Cypress Semiconductor Corporation (an Infineon company) or
9 * an affiliate of Cypress Semiconductor Corporation
10 *
11 * SPDX-License-Identifier: Apache-2.0
12 *
13 * Licensed under the Apache License, Version 2.0 (the "License");
14 * you may not use this file except in compliance with the License.
15 * You may obtain a copy of the License at
16 *
17 * http://www.apache.org/licenses/LICENSE-2.0
18 *
19 * Unless required by applicable law or agreed to in writing, software
20 * distributed under the License is distributed on an "AS IS" BASIS,
21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
22 * See the License for the specific language governing permissions and
23 * limitations under the License.
24 **************************************************************************************************/
25
26 #pragma once
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 #include <stdbool.h>
33 #if !defined (COMPONENT_CAT5)
34 #include <cmsis_compiler.h>
35 #endif
36
37 /** Checks to see if code is currently executing within an interrupt context.
38 *
39 * @return Boolean indicating whether this was executed from an interrupt context.
40 */
is_in_isr(void)41 static inline bool is_in_isr(void)
42 {
43 #if defined(COMPONENT_CR4) // Can work for any Cortex-A & Cortex-R
44 uint32_t mode = __get_mode();
45 return (mode == 0x11U /*FIQ*/) || (mode == 0x12U /*IRQ*/) || (mode == 0x13U /*SVC*/) ||
46 (mode == 0x17U /*ABT*/) || (mode == 0x1BU /*UND*/);
47 #elif defined(COMPONENT_CAT5)
48 // This device does not allow calling from interrupt context.
49 return false;
50 #else // Cortex-M
51 return (__get_IPSR() != 0);
52 #endif
53 }
54
55
56 #if defined(__cplusplus)
57 }
58 #endif
59
