initial commit

2019-02-19 22:02:06 +01:00
commit 59e78f996f
14 changed files with 405 additions and 0 deletions
--- a/armv6/tutorial/conditionaljump.s
+++ b/armv6/tutorial/conditionaljump.s
@@ -0,0 +1,32 @@
+@ <intstruction> <destination> , <operand>, <operand>
+
+.global _start
+
+/*
+	CMP R1. R2
+	if R1 <  R2 then N is enabled
+	if R1 >  R2 then N is disabled 
+	if R1 == R2 then Z is enabled
+*/
+
+_start:
+	MOV R1, #20
+	MOV R2, #10
+	CMP R1, R2
+	BEQ values_equal
+	BGT values_greater
+
+values_less:
+	MOV R0, #2
+	B end	
+
+values_equal:
+	MOV R0, #1
+	B end
+
+values_greater:
+	MOV R0, #3
+
+end:
+	MOV R7,	#1	@ exit to terminal
+	SWI 0		@ system reads R7 after interrupt