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libcpu
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aarch64
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common
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stack_gcc.S

stack_gcc.S 594 B
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  1. /*
    2. 

  2.  * Copyright (c) 2006-2024, RT-Thread Development Team
    3. 

  3.  *
    4. 

  4.  * SPDX-License-Identifier: Apache-2.0
    5. 

  5.  *
    6. 

  6.  * Change Logs:
    7. 

  7.  * Date           Author       Notes
    8. 

  8.  * 2021-05-18     Jesven       the first version
    9. 

  9.  * 2023-06-24     Shell        Support debug frame for user thread
    10. 

  10.  */
    11. 

  11. 

  12. #ifndef __ASSEMBLY__
    13. 

  13. #define __ASSEMBLY__
    14. 

  14. #endif
    15. 

  15. 

  16. #include "rtconfig.h"
    17. 

  17. #include "asm-generic.h"
    18. 

  18. #include "asm-fpu.h"
    19. 

  19. #include "armv8.h"
    20. 

  20. 

  21. .section .text
    22. 

  22. 

  23. START_POINT(_thread_start)
    24. 

  24.     mov     x0, x21
    25. 

  25.     blr     x19
    26. 

  26.     mov     x29, #0
    27. 

  27.     blr     x20
    28. 

  28.     b       .   /* never here */
    29. 

  29. START_POINT_END(_thread_start)
    30.