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/* ARM Cortex-M GCC specific inline assembler functions and macros */
/*
* Copyright (c) 2015, Wind River Systems, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _ASM_INLINE_GCC_H
#define _ASM_INLINE_GCC_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* The file must not be included directly
* Include asm_inline.h instead
*/
#ifndef _ASMLANGUAGE
/**
*
* @brief Obtain value of IPSR register
*
* Obtain and return current value of IPSR register.
*
* @return the contents of the IPSR register
*/
static ALWAYS_INLINE uint32_t _IpsrGet(void)
{
uint32_t vector;
__asm__ volatile("mrs %0, IPSR\n\t" : "=r"(vector));
return vector;
}
/**
*
* @brief Set the value of the Main Stack Pointer register
*
* Store the value of <msp> in MSP register.
*
* @return N/A
*/
static ALWAYS_INLINE void _MspSet(uint32_t msp /* value to store in MSP */
)
{
__asm__ volatile("msr MSP, %0\n\t" : : "r"(msp));
}
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _ASM_INLINE_GCC_H */
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