Mips to Machine Code and Machine Code to Mips Procedures wil

Mips to Machine Code, and Machine Code to Mips

(Procedures will be preferred!)

MACHINE CODE MIPS Convert each of the following 32-bit machine code instructions into a MIPS instruction. Formatting: use register names in your final answer, e.g. $to instead of $8 For all questions, you can assume PC+4 = 0x0040004 and we have the following labels: func1: 0x0040000c func2: 0x00400014 func3: 0x0040002c problem (1 point possible) 0xA2 6 8000A. (Recall PC+4 Ox0040004, func 1 : 0x0040000c, func2: 0x0 0 4 0 0 0 14 , func3: 0x0040002c) sb $t0 0x000A $s3 CHECK problem (1 point possible) 0x00851026 (Recall PC+4 0x0 040004, func1: 0x0040000c, func2: 0x00400014, func 3 : 0x0040002c) 2 CHECK problem (1 point possible) 0x0C100005 (Recall PC+4 0x0 040004, func1: 0x0040000c, func2: 0x00400014, func 3 : 0x0040002c) 2 CHECK problem (1 point possible) 0x00008A03 (Recall PC+4 0x0 040004, func1: 0x0040000c, func2: 0:00400014, func 3 : 0x0040002c) 2 CHECK

Solution

1)

0xA268000A

in binary => 10100010011010000000000000001010

101000 10011 01000 0000000000001010

opcode(101000) = SB

register(10011) => $s3

register(01000) => $t0

0000000000001010 = 0x000A

Answer: sb $t0, 0x000A($s3)

2)

0X00851026

in binary => 00000000100001010001000000100110

000000 00100 00101 00010 00000 100110

first 6 bits are special bits in this case

opcode(100110) = xor

register(00100) = $a0

register(00101) = $a1

register(00010) = $v0

Answer: xor $v0, $a0, $a1

3)

0x0C100005

binary => 00001100000100000000000000000101

000011 00000100000000000000000101

opcode(000011) = jal

target adress = 00000100000000000000000101

Answer: jal 0x0100005

4)

0x00008A03

binary => 00000000000000001000101000000011

first 6 bits are special bits in this case

opcode(000011) = sra

register(00000) = $zero

register(10001) = $s1

01000 = 8

Answer: sra $s1, $zero, 8