Diff: Program3_F20_Leong.s

Revision:

0:e579c6f35abf

Child:

2:1be4e7457636

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Program3_F20_Leong.s	Sun Nov 15 21:53:52 2020 +0000
@@ -0,0 +1,58 @@
+                    AREA Program3, CODE, READONLY
+                    GLOBAL getQuad
+                    ; uint32_t getQuad ( uint16_t x, uint16_t y)
+getQuad             CMP R0, #125
+                    MOVLT R0, #1
+                    MOVGT R0, #2
+                    CMP R1, #160
+                    ADDGT R0, R0, #2
+                    BX LR
+                    
+                    GLOBAL swapRedBlue
+                    ; uint32_t swapRedBlue ( uint32_t color)
+swapRedBlue         MOV R1, R0
+                    MOV R2, R0
+                    MOV R3, R0
+                    MOV R4, R0
+                    
+                    LSL R1, R1, #24
+                    LSR R1, R1, #8
+                    
+                    LSL R2, R2, #8
+                    LSR R2, R2, #24
+                    
+                    LSR R3, R3, #24
+                    LSL R3, R3, #24
+                    
+                    LSL R4, R4, #16
+                    LSR R4, R4, #24
+                    LSL R4, R4, #8
+                    
+                    ORR R5, R1, R2
+                    ORR R6, R3, R4
+                    ORR R0, R5, R6
+                    BX LR
+                    
+                    GLOBAL toggleAlphaMSB
+                    ; uint32_t toggleAlphaMSB ( uint32_t color)
+toggleAlphaMSB      MVN R1, R0
+                    LSR R1, R1, #24
+                    LSL R1, R1, #24 
+                    LSL R0, R0, #8
+                    LSR R0, R0, #8
+                    ORR R0, R0, R1
+                           
+                    BX LR
+                    
+                    GLOBAL rotateRGBBytes
+                    ; uint32_t rotateRGBBytes ( uint32_t color)
+rotateRGBBytes             
+                    BX LR
+                    
+                    GLOBAL setRGBBits
+                    ;  uint32_t setRGBBits ( uint32_t color, uint8_t n)  
+setRGBBits             
+                    BX LR
+                
+        
+                    END
\ No newline at end of file