rt-thread-official/bsp/rv32m1_vega/ri5cy/board/trap_gcc.S

17 lines
324 B
ArmAsm

#include "cpuport.h"
.globl rt_hw_do_after_save_above
.type rt_hw_do_after_save_above,@function
rt_hw_do_after_save_above:
addi sp, sp, -4
STORE ra, 0 * REGBYTES(sp)
csrr a0, mcause
csrr a1, mepc
mv a2, sp
call SystemIrqHandler
LOAD ra, 0 * REGBYTES(sp)
addi sp, sp, 4
ret