Arithmetic Instructions
Name Syntax Meaning add add $rd, $rs, $rt $rd = $rs + $rt addu addu $rd, $rs, $rt $rd = $rs + $rt (unsigned) sub sub $rd, $rs, $rt $rd = $rs - $rt subu subu $rd, $rs, $rt $rd = $rs - $rt (unsigned) addi addi $rd, $rs, constantValue $rd = $rs + constantValue addiu addiu $rd, $rs, constantValue $rd = $rs + constantValue (unsigned) Logical Instructions (so far)
Name Syntax Meaning sll (shift left logical) sll $rd, $rs, shiftAmount shift $rd by shiftAmount, put in $rd srl (shift right logical) srl $rd, $rs, shiftAmount shift $rd by shiftAmount, put in $rd Memory Access Instructions (so far)
Name Syntax Meaning lw (load word) lw $rd, offset($base) load word from address ($base+offset) to $rd sw (store word) sw $rs, offset($base) store word from $rs to address ($base+offset)
Registers (so far)
Number Name Comments 0 $zero
constant 0 ... 8
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15$t0
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.$t7
temporary (not preserved across function call)
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temporary (not preserved across function call)16
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23$s0
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.$s7
saved temporary (preserved across function call)
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saved temporary (preserved across function call)24
25$t8
$t9
temporary (not preserved across function call)
temporary (not preserved across function call)...