In this repository I show some basic codes in MIPS, with:

• Loops
• Whiles
• Procedures (parameters, returns)

Some definitions will be important to understand MIPS:

• In this language, we use instructions, which are quite basic (something defined by the engineers themselves).
• MIPS instructions have a basic structure: {Command} {Destination Register}, {Register 1}, {Register 2}

An example of code is the addition instruction:

add $s0, $s1, $s2

*In the codes of this repository, we have comments.

Instructions: add: The add instruction performs addition and stores the result in the destination register.

Syntax: add $dest, $src1, $src2 Example: add $t0, $t1, $t2 adds the values of registers $t1 and $t2 and stores the result in $t0. addi: The addi instruction adds a signed immediate value to a register and stores the result in the destination register.

Syntax: addi $dest, $src, imm Example: addi $t0, $t1, 5 adds the immediate value 5 to the value of $t1 and stores the result in $t0. sub: The sub instruction performs subtraction and stores the result in the destination register.

Syntax: sub $dest, $src1, $src2 Example: sub $t0, $t1, $t2 subtracts the value of register $t2 from $t1 and stores the result in $t0. subi: The subi instruction subtracts a signed immediate value from a register and stores the result in the destination register.

Syntax: subi $dest, $src, imm Example: subi $t0, $t1, 3 subtracts the immediate value 3 from the value of $t1 and stores the result in $t0. beq: The beq instruction performs a conditional branch to a target label if two registers are equal.

Syntax: beq $src1, $src2, label Example: beq $t0, $t1, loop branches to the loop label if the values in $t0 and $t1 are equal. bne: The bne instruction performs a conditional branch to a target label if two registers are not equal.

Syntax: bne $src1, $src2, label Example: bne $t0, $t1, loop branches to the loop label if the values in $t0 and $t1 are not equal. lw: The lw instruction loads a word (4 bytes) from memory into a register.

Syntax: lw $dest, offset($base) Example: lw $t0, 4($t1) loads a word from memory at the address $t1 + 4 into $t0. sw: The sw instruction stores the value of a register into memory.

Syntax: sw $src, offset($base) Example: sw $t0, 8($t1) stores the value in $t0 into memory at the address $t1 + 8. Basic Registers: Registers $t0 to $t9 are temporary registers commonly used for general-purpose operations. Registers $s0 to $s7 are saved registers used for preserving values across function calls. Registers $sp is the stack pointer, used to manage the program stack. Registers $ra is the return address register, used to store the address to return to after a function call. Jump: Jump instructions, such as j and jal, are used to modify the control flow of the program. j (jump) unconditionally jumps to a target label. jal (jump and link) jumps to a target label and saves the return address in register $ra.