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943745a1e0
Mult/Div, Branch/Jump Linking, J needs implementation before testing and store to be tested when switched to bus
584 lines
6.2 KiB
Plaintext
584 lines
6.2 KiB
Plaintext
== Instruction ==
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C code
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Assembly code
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Hex code
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Reference Output
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================
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ADDIU Add immediate unsigned (no overflow)
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== ADDU Add unsigned (no overflow) ==
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int main(void) {
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int a = 3 + 5;
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}
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ORI $4,$0,3
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ORI $5,$0,5
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ADDU $2,$4,$5
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JR $0
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34040003
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34050005
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00851021
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00000008
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register_v0 = 8
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==AND Bitwise and==
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ORI $5,$0,0xCCCC
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LUI $5,0xCCCC
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ORI $4,$0,0xAAAA
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LUI $4,0xAAAA
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AND $2,$4,$5
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JR $0
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3405cccc
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3c05cccc
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3404aaaa
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3c04aaaa
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00851024
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00000008
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register_v0 = 0x88888888
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==ANDI Bitwise and immediate==
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ORI $4,$0,0xAAAA
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LUI $4,0xAAAA
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ANDI $2,$4,0xCCCC
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JR $0
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3404aaaa
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3c04aaaa
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3082cccc
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00000008
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register_v0 = 0x00008888
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==BEQ Branch on equal==
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ORI $4,$0,5
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ORI $5,$0,5
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BEQ $4,$5,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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34040005
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34050005
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10850003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==BGEZ Branch on greater than or equal to zero==
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ORI $4,$0,3
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BGEZ $4,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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34040003
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04810003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==BGEZAL Branch on non-negative (>=0) and link==
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ORI $4,$0,3
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BGEZAL $4,4
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NOP
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ADDIU $2,$2,1
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JR $0
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NOP
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ORI $2,$0,1
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JR $31
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34040003
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04910004
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00000000
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24420001
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00000008
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00000000
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34020001
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03E00008
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register_v0 = 2
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==BGTZ Branch on greater than zero==
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ORI $4,$0,3
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BGTZ $4,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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34040003
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1C800003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==BLEZ Branch on less than or equal to zero==
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LUI $4,0xFFFF
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BLEZ $4,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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3C05FFFF
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18800003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==BLTZ Branch on less than zero==
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LUI $4,0xFFFF
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BLTZ $4,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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3C05FFFF
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04800003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==BLTZAL Branch on less than zero and link==
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LUI $4,0xFFFF
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BLTZAL $4,4
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NOP
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ADDIU $2,$2,1
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JR $0
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NOP
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ORI $2,$0,1
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JR $31
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3C05FFFF
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04900004
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00000000
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24420001
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00000000
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00000008
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34020001
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03E00008
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register_v0 = 2
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==BNE Branch on not equal==
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ORI $4,$0,3
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ORI $5,$0,5
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BNE $4,$5,3
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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34040003
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34040005
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14850003
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00000000
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00000008
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00000000
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34020001
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00000008
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register_v0 = 1
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==DIV Divide== //May need other testcases for -ve/+ve, -ve/-ve
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ORI $4,$0,3
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ORI $5,$0,9
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DIV $5,$4
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MFHI $4
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MFLO $5
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ADDU $2,$4,$5
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JR $0
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34040003
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34050009
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00A4001A
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00002010
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00002812
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00851021
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00000008
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register_v0 = 3
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==DIVU Divide unsigned== //May need other testcases for -ve/+ve, -ve/-ve
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LUI $4,0x8000
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ORI $5,$0,2
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DIVU $4,$5
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MFHI $4
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MFLO $5
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ADDU $2,$4,$5
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JR $0
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34048000
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34050002
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0085001B
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00002010
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00002812
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00851021
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00000008
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register_v0 = 0x40000000
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==J Jump==
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J 12
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NOP
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JR $0
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NOP
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ORI $2,$0,1
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JR $0
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0800000C
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00000000
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00000008
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00000000
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3402000A
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00000008
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register_v0 = 10
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==JALR Jump and link register==
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ORI $5,$0,0x001C
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LUI $5,0xBFC0
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JALR $4,$5
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NOP
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ADDIU $2,$2,1
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JR $0
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NOP
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ORI $2,$0,1
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JR $4
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3405001C
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3C05BCF0
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00A02009
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00000000
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24420001
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00000008
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00000000
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34020001
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00800008
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register_v0 = 2
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==JAL Jump and link==
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JAL 5
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NOP
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ADDIU $2,$2,1
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JR $0
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NOP
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ORI $2,$0,1
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JR $31
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0C000005
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00000000
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24420001
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00000008
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00000000
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34020001
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03E00008
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register_v0 = 2
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==JR Jump register==
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LUI $5,0xBFC0
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ORI $5,$5,0x0014
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JR $5
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NOP
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JR $0
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NOP
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ORI $2,$0,0x10
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JR $0
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3C05BFC0
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34A50014
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00A00008
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00000000
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00000008
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34020010
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00000008
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register_v0 = 16
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==LB Load byte==
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ORI $4,$0,0x1003
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LB $2,3($4)
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JR $0
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-Instruction Hex
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34041000
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80820006
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00000008
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-Memory Hex
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00000000
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008A0000
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00000000
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00000000
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register_v0 = 0xFFFFFF8A
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==LBU Load byte unsigned==
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ORI $4,$0,0x1003
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LBU $2,3($4)
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JR $0
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-Instruction Hex
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34041003
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90820003
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00000008
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-Memory Hex
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00000000
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008A0000
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00000000
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00000000
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register_v0 = 0x0000008A
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==LH Load half-word==
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ORI $4,$0,0x1003
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LH $2,4($4)
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JR $0
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-Instruction Hex
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34041003
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84820004
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00000008
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-Memory Hex
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00000000
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00008123
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00000000
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00000000
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register_v0 = 0xFFFF8123
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==LHU Load half-word unsigned==
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ORI $4,$0,0x1003
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LHU $2,4($4)
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JR $0
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-Instruction Hex
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34041003
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94820004
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00000008
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-Memory Hex
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00000000
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00008123
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00000000
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00000000
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register_v0 = 0x00008123
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==LUI Load upper immediate==
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LUI $2,0x1234
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ORI $2,$2,0x5678
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JR $0
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3C021234
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34425678
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00000008
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register_v0 = 0x12345678
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==LW Load word==
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ORI $4,$0,0x1002
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LW $2, 2($4)
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JR $0
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-Instruction Hex
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34041002
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8C820002
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00000008
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-Memory Hex
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00000000
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12345678
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00000000
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00000000
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register_v0 = 0x12345678
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==LWL Load word left==
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ORI $4,$0,0x1001
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ORI $2,$0,0x5678
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LWL $2,3($4)
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JR $0
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-Instruction Hex
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34041001
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34025678
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88820003
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00000008
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-Memory Hex
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00000000
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AAAA1234
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00000000
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00000000
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register_v0 = 0x12345678
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==LWR Load word right==
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ORI $4,$0,0x1002
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LUI $2,0x1234
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LWR $2,2($4)
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JR $0
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-Instruction Hex
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34041002
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3C021234
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98820002
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00000008
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-Memory Hex
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00000000
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5678AAAA
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00000000
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00000000
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register_v0 = 0x12345678
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// DIVU Divide unsigned
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// DIV Divide
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//MFHI Move from Hi
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//MFLO Move from lo
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//MTHI Move to HI
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//MTLO Move to LO
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//MULT Multiply**
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//MULTU Multiply unsigned**
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//OR Bitwise or
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//ORI Bitwise or immediate
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//SB Store byte
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//SH Store half-word**
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//SLL Shift left logical
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//SLLV Shift left logical variable **
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//SLT Set on less than (signed)
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//SLTI Set on less than immediate (signed)
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//SLTIU Set on less than immediate unsigned
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//SLTU Set on less than unsigned
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//SRA Shift right arithmetic
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//SRAV Shift right arithmetic**
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//SRL Shift right logical
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//SRLV Shift right logical variable**
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//SUBU Subtract unsigned
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//SW Store word
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ori $4, $0, 0xFFFF 3404FFFF
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ori $5, $0, 0x1008 34051008
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sw $4, 4($5) ACA40004
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ori $5, $0, 0x100C 3405100C
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lw $2, 0($5) 8CA20000
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jr $0 00000008
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ori $4, $0, 0x1234
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ori $5, $0, 0x1008
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sw $4, 0($5)
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lw $2, 0($5)
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jr $0
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3404FFFF
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34051008
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ACA40000
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8CA20000
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00000008
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//XOR Bitwise exclusive or
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//XORI Bitwise exclusive or immediate
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