rt-thread/bsp/hpmicro/hpm5301evklite/startup/HPM5301/toolchains/gcc/port_gcc.S

/*
 * Copyright (c) 2021-2023 HPMicro
 *
 * SPDX-License-Identifier: BSD-3-Clause
 *
 */
#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    t1, mcause
    andi    t1, t1, 0x3FF
    /* get ISR */
    la      t2, trap_entry
    jalr    t2

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