Diff: fourth.S

Revision:

0:9c65f066245c

diff -r 000000000000 -r 9c65f066245c fourth.S
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fourth.S	Tue Dec 07 07:20:04 2021 +0000
@@ -0,0 +1,29 @@
+                    AREA R, CODE, READONLY 
+                    GLOBAL optionFour 
+     
+                    ; uint32_t optionFour(uint32_t *) 
+optionFour    
+
+        PUSH {R4,R5,R6}    
+        LDR R0,[R0]; color value
+        LDR R1, =0x00FFFFFF
+        LDR R3, =0xFF000000
+        AND R2, R0, R1
+        MVN R2, R2
+        BIC R2, R3
+        BIC R0, R1
+        ADD R0, R2
+        MOV R3, R0
+        
+
+        
+        
+        POP {R4,R5,R6}
+                     
+                     
+                     
+                     
+                     BX LR 
+                    
+                    
+                    END
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