| /* 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 */ |