Cod submission

week1/Week1_Lab.md

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+
+# Program 1: 
+
+
+### Statement: Write an Assembly Program for addition of 2 words
+
+### Name of file:add_word.s
+
+
+### Observation - Single Cycle
+- loading the data into the registers, aadding them and storing the result in another register
+
+### Register Mapping
+- x1:loading the array of words
+x2: loading the first word from the array
+x3:loading the second word from the array
+x4:storing the result
+
+### Data Mapping
+- x1:0x10000000
+x2:0x80000002
+x3:0x9123456a
+x4:0x1123456c
+
+
+# Program 2:
+### Statement: :write an Assembly code for adding 2 halfwords 
+
+### Name of file:add_half.s
+
+### Observation - Single Cycle
+- laoding data from addres to the register ,the second number is stored with an offset value of 2, 
+adding the numbers and storing the added result into the register with an offset valu of 4
+
+### Register Mapping
+- x1:loading the array of the two half words 
+x2:laoding the first half word 
+x3:loading the second half word
+x4:storing the result
+x1:storing the added result back into the memory
+
+### Data Mapping
+x1:0x1000000000
+x2:0x0000000002
+x3:0xffffffffff
+x4:0x0000000001
+
+# Program 3:
+### Statement: :write an Assembly code for adding 2 bytes
+
+### Name of file:add_byte 
+
+
+
+
+### Observation - Single Cycle
+- laoding data from addres to the register ,the second number is stored with an offset value of 1,
+adding the numbers and storing the added result into the register with an offset valu of 2
+
+### Register Mapping
+- x1:loading the array of the two bytes
+x2:laoding the first byte
+x3:loading the second byte
+x4:storing the result
+x1:storing the added result back into the memory
+
+### Data Mapping
+x1:0x1000000000
+x2:0x0000000004
+x3:0x000000006a
+x4:0x000000006e
+
+
+### Observation - Single Cycle
+- laoding data from addres to the register ,the second number is stored with an offset value of 2,
+adding the numbers and storing the added result into the register with an offset valu of 4
+
+### Register Mapping
+- x1:loading the array of the two half words
+x2:laoding the first half word
+x3:loading the second half word
+x4:storing the result
+x1:storing the added result back into the memory
+
+### Data Mapping
+x1:0x1000000000
+x2:0x0000000002
+x3:0xffffffffff
+x4:0x0000000001
+
+#program 4:
+###statement: Write an Assembly Program and analyse the format of storing signed and unsigned words, half words and byte data types
+### Name of the file:add_byte
+
+###observation - single cycle
+-assume the word is 0x12345678 and the instructions are as follows :
+lw x5,0x00(x10)
+lh x6,0x00(x10)
+lb x7,0x00(x10)
+
+(i) when the instruction is lw or load word, it stores 4 bytes of data starting from the lsb 
+-
+i.e. 0x12345678
+(ii)when the instruction is lh or load half word, it stores 2 bytes of data starting from lsb 
+i.e.=0x00005678
+(iii)when the instruction is lb,it stores only 1 byte of data starting from the lsb 
+i.e.=0x00000078
+
+### Register mapping
+x10:stores the address of n
+x5: Loads the first word 
+x6: loads te second word , The second word is loaded into the register x6  by having an offset value of 4byte
+x7:The result of the addition (0x12345678+0x11111111) is stored in the regitster x7
+
+### Data mapping
+x10:0x10000000
+x5:0x12345678
+x6:0x00005678
+x7:0x00000078
+

week1/add_byte.s

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+.data.data\
+a: .byte 0x02, 0x6A   \
+\
+    .text\
+    la x1, a          \
+    lb x2, 0(x1)      \
+    lb x3, 1(x1)      \
+    add x4, x3, x2    \
+    sb x4, 2(x1)    \
+a: .byte 0x02, 0x6A   
+
+    .text
+    la x1, a          
+    lb x2, 0(x1)    
+    lb x3, 1(x1)    
+    add x4, x3, x2  
+    sb x4, 2(x1)    

week1/add_half.s

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+ .data
+a: .half 0x0002, 0xFFFF,0x0000   
+
+    .text
+    la x1, a            
+    lh x2, 0(x1)        
+    lh x3, 2(x1)        
+    add x4, x3, x2      
+    sh x4, 4(x1)        
+

week1/add_word.s

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+.data
+a: .word 0x80000002,0x9123456A
+.text
+la x1,a
+lw x2,0(x1)
+lw x3,4(x1)
+add x4,x3,x2
+sw x4,8(x1)

week1/format_analysis.md

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+
+.data
+a: .word 0x80000112, 0x9123456C   
+b: .half 0x8002, 0x456A           
+c: .byte 0x82, 0x6A               
+
+.text
+    la x10, a          
+    lw x12, 0(x10)       
+    lw x13, 4(x10)      
+    add x14, x13, x12     
+    sw x14, 8(x10)  
+
+    la x10, a
+    lwu x12, 0(x10)
+    lwu x13, 4(x10)
+    add x14, x13, x12
+    sw x14,8(x10)
+
+    la x11, b           
+    lh x12, 0(x11)       
+    lh x13, 2(x11)       
+    add x14, x13, x12    
+    sh x14, 4(x10)       
+
+    la x11, c           
+    lb x12, 0(x11)       
+    lb x13, 1(x11)       
+    add x14, x13, x12    
+    sb x14, 2(x10)      
+
+    la x10, b           
+    lhu x12, 0(x10)       
+    lhu x13, 2(x10)       
+    add x14, x13, x12    
+    sh x14, 4(x10)       
+
+    la x11, c           
+    lbu x12, 0(x11)       
+    lbu x13, 1(x11)       
+    add x14, x13, x12    
+    sb x14, 2(x10)

week1/format_analysis.md.s

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+.data 
+n:.word 0x12345678, 0x11111111, 0
+.text
+la x10,n
+lw x5,0x00(x10)
+lh x6,0x00(x10)
+lb x7,0x00(x10)

week1/format_analysis.s

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+.data 
+n:.word 0x12345678, 0x11111111, 0
+.text
+la x10,n
+lw x5,0x00(x10)
+lh x6,0x00(x10)
+lb x7,0x00(x10)