MIPS assembler

This is a two-pass assembler built to convert corresponding MIPS code into an object file using C.

Features

This MIPS assembler can convert the following instructions:

R-type	I-type	J-type	Branches	Pseudoinstructions	Syscalls
add	addi	jal	beq	move	#1: print int
sub	addiu	jr	bne	li	#4: print string
and	lw			la	#5: read int
or	sw			lw <label>	#8: read string
slt	lui				#10: exit
jr	ori				#11: print char

It also comes with different macros which can be called. The following macros included are the following:

• exit()
• read_integer(int)
• print_integer(int)
• read_str(label, int)
• print_str(label)
• gcd(int, int)

Usage

Compilation

To compile the assembler, run the command on your preferred shell:

gcc -o mips_assembler assembler.c && ./mips_assembler

This implementation can be used by strictly following the specifications of the input:

Input Format

1. The input must be a .txt file.
2. The first line of input must be an integer n corresponding to the total number of words in the MIPS program.
3. There should be no spaces between commas. There should only be spaces between the label, mnemonic, and the operands.

Output Format

1. A file containing all the symbols and their corresponding addresses generated during the first-pass of the assembler. This is saved on symboltable.txt.
2. A generated machine code (in binary) equivalent to the assembly instructions of the input text file. This is saved on execute.txt.
3. Printing to the console the expected output of the MIPS program (if applicable).

Authors

• Salces, Carl John S.
• Villamil, John Ysaac S.