From 1fbbb6f15fef8e958b57728d59d1912aeea7c7c6 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Fri, 18 Mar 2022 16:02:08 -0700
Subject: Supervisor Call to Add Thread

---
 src/sys/schedule.S | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/sys/schedule.S')

diff --git a/src/sys/schedule.S b/src/sys/schedule.S
index 6b3d3e1..a47252c 100644
--- a/src/sys/schedule.S
+++ b/src/sys/schedule.S
@@ -41,3 +41,13 @@ cleanup:
 kernel_usr_task_loop:
 	wfe
 	b kernel_usr_task_loop
+
+.globl add_thread
+add_thread:
+	mrs r3, cpsr
+	and r3, #0x1F
+	cmp r3, #0x10
+	beq 1f
+	b svc_add_thread
+1:	svc #3
+	bx lr
-- 
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