Update docs

ch1-qemu-exit
田凯夫 3 years ago committed by dramforever
parent 6cd64cdebc
commit f723ee06a9

@ -27,14 +27,17 @@ fn sbi_call(which: usize, arg0: usize, arg1: usize, arg2: usize) -> usize {
ret
}
/// use sbi call to putchar in console (qemu uart handler)
pub fn console_putchar(c: usize) {
sbi_call(SBI_CONSOLE_PUTCHAR, c, 0, 0);
}
/// use sbi call to getchar from console (qemu uart handler)
pub fn console_getchar() -> usize {
sbi_call(SBI_CONSOLE_GETCHAR, 0, 0, 0)
}
/// use sbi call to shutdown the kernel
pub fn shutdown() -> ! {
sbi_call(SBI_SHUTDOWN, 0, 0, 0);
panic!("It should shutdown!");

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