rt-thread/bsp/gd32/risc-v/gd32vf103r-start/board/trap_gcc.S

19 lines
358 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
csrrw ra, 0x07ED, ra
li t0, 0x08
csrc mstatus, t0
LOAD ra, 0 * REGBYTES(sp)
addi sp, sp, 4
ret