tasm/os.tasm


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

// trivial stuff to make sure simulator exits once test program is run and
// making sure our _start is the first thing in the object file
_start:
	// random starting stack location
	li sp, 13122
	mv fp, sp
	call ra, main
	li t0, 3
	csrrw mpower, x0, t0

// simple I/O
_putchar:
	li t0, 19683
	st t a0, 0(t0)
	ret ra

// include the rest of the test program here, doesn't really matter how