From 98793badc1c1d3e4bfd735fdecd3d2d731701ab3 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Tue, 1 Feb 2022 19:39:36 -0700
Subject: Syscall to get timer value

---
 src/exceptions/svc.S | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/exceptions/svc.S')

diff --git a/src/exceptions/svc.S b/src/exceptions/svc.S
index d1fcbc0..51c6479 100644
--- a/src/exceptions/svc.S
+++ b/src/exceptions/svc.S
@@ -18,6 +18,12 @@ svc_000000:
 	cps #0x13
 	b svc_exit
 svc_000001:
+	mov r2, #0x3004
+	movt r2, #0x3F00
+	ldr r0, [r2, #4] // <- SYS_TIMER_CLO
+	ldr r1, [r2, #0] // <- SYS_TIMER_CHI
+	str r0, [sp]	 // Return value
+	str r1, [sp, #4] // Return value hi
 	b svc_exit
 svc_000002:
 	ldmfd sp!, {r0-r12,lr}
-- 
cgit v1.2.1