#include .type vx_putchar, @function .global vx_putchar vx_putchar: la t0, print_addr lw t0, 0(t0) csrr t1, CSR_GTID slli t1, t1, 16 or t1, t1, a0 sw t1, 0(t0) ret .section .data print_addr: .word IO_BUS_ADDR_COUT