From: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Date: Fri, 26 Apr 2019 18:25:27 +0000 (-0300)
Subject: Use the timer interrupt to repeatedly print.
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Fblix.git;a=commitdiff_plain

Use the timer interrupt to repeatedly print.
---

diff --git a/blix.S b/blix.S
index dd35be8..7eacfaf 100644
--- a/blix.S
+++ b/blix.S
@@ -7,9 +7,13 @@ _start:
 	li a7, 1
 	la a1, _hello
 	jal puts
-	csrr a2, stvec
-	jal putl
-	csrw 0xfff, a0
+	li a1, 0x20
+	csrs sie, a1
+	csrr a2, time
+	lui a0, 0x800
+	add a0, a0, a2
+	li a7, 0
+	ecall
 halt:
 	j halt
 
@@ -45,10 +49,14 @@ _hello:
 .align 8
 _vec:
 	li a7, 1
-	la a1, _exception
+	la a1, _hello
 	jal puts
-	csrr a2, scause
-	call putl
+	li a7, 0
+	csrr a2, time
+	lui a0, 0x800
+	add a0, a0, a2
+	ecall
+	sret
 loop2:
 	j loop2