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drivers
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trap_gcc.S

trap_gcc.S 322 B
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  1. #include "cpuport.h"
    2. 

  2. 

  3. 	.globl rt_hw_do_after_save_above
    4. 

  4. 	.type rt_hw_do_after_save_above,@function
    5. 

  5. rt_hw_do_after_save_above:
    6. 

  6. 	addi  sp, sp,  -4
    7. 

  7.     STORE ra,  0 * REGBYTES(sp)
    8. 

  8.     csrr  a0, mcause
    9. 

  9.     csrr  a1, mepc
    10. 

  10.     mv    a2, sp
    11. 

  11.     call  handle_trap
    12. 

  12.     LOAD  ra,  0 * REGBYTES(sp)
    13. 

  13.     addi  sp, sp,  4
    14. 

  14.     ret
    15. 

  15.     
    16.