The MIPS instruction set is very small, so to do more complicated tasks we need to employ assembler macros called pseudoinstructions.
List of Pseudoinstructions
The following is a list of the standard MIPS instructions that are implemented as pseudoinstructions:
Branch if less than (blt)
The blt instruction compares 2 registers, treating them as signed integers, and takes a branch if one register is less than another.
blt $8, $9, label
slt $1, $8, $9 bne $1, $0, label
Load Immediate (li)
The li pseudo instruction loads an immediate value into a register.
li $8, 0x3BF20
lui $8, 0x0003 ori $8, $8, 0xBF20
The move pseudo instruction moves the contents of one register into another register.
move $1, $2
add $1, $2, $0
Load Address (la)
lui $at, 4097 (0x1001 → upper 16 bits of $at). or $a0,$at,disp
where the immediate (“disp”) is the number of bytes between the first data location (always 0x 1001 0000) and the address of the first byte in the string.
CS141 HW2 problem 2?