rt-thread/libcpu/risc-v/cv32e40p/trap_gcc.S

#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  rt_rv32_system_irq_handler

    LOAD  ra,  0 * REGBYTES(sp)
    addi  sp, sp,  4
    ret