## LSU EE 3755 -- Spring 2002 -- Computer Organization
#
## Example used in class 19 April 2002.


        .data
SAMPLE:
        .asciiz "This is our sample string."

msg:
        .ascii "The length of the string,\n\t \"%/a2/s\",\n is %/v1/d\n"
        .asciiz "Have a nice day.\n"

        .text

        .globl __start
__start:
        la $a0, SAMPLE
        jalr strlen
        nop
        addi $v1, $v0, 0
        la $a2, SAMPLE
        addi $v0, $0, 11
        la $a0, msg
        syscall
        addi $v0, $0, 10
        syscall
        

strlen:
        ## Register Usage
        #
        # $a0: Address of first character of string.
        # $v0: Return value, the length of the string.
        #
        #

        addi $v0, $a0, 1
LOOP:
        lbu $t0, 0($a0)
        bne $t0, $0 LOOP
        addi $a0, $a0, 1

        jr $ra  
        sub $v0, $a0, $v0      


####