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smccc.S

smccc.S 667 B
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  1. /*
    2. 

  2.  * Copyright (c) 2006-2021, 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.  * 2021-09-09     GuEe-GUI     The first version
    9. 

  9.  */
    10. 

  10. 

  11. /*
    12. 

  12.  * smc calling convention call
    13. 

  13.  */
    14. 

  14. .macro SMCCC_CALL INS
    15. 

  15.     stp     x8, x29, [sp,#-16]! /* push the frame pointer (x29) for the purposes of AAPCS64 compatibility */
    16. 

  16.     \INS    #0
    17. 

  17.     ldp     x8, x29, [sp], #16
    18. 

  18. 

  19.     stp     x0, x1, [x8]
    20. 

  20.     stp     x2, x3, [x8, #16]
    21. 

  21.     str     x6, [x8, #32]
    22. 

  22.     ret
    23. 

  23. .endm
    24. 

  24. 

  25. /*
    26. 

  26.  * smc call
    27. 

  27.  */
    28. 

  28. .globl arm_smc_call
    29. 

  29. arm_smc_call:
    30. 

  30.     SMCCC_CALL smc
    31. 

  31. 

  32. /*
    33. 

  33.  * hvc call
    34. 

  34.  */
    35. 

  35. .globl arm_hvc_call
    36. 

  36. arm_hvc_call:
    37. 

  37.     SMCCC_CALL hvc
    38.