.data                       ; section declaration - variables only

msg0:
    .ascii  "Less than zero \n\0"
    len0 = . - msg0	    ; length of our dear string

msg1:
    .ascii  "Greater than zero \n\0"
    len1 = . - msg1

msg2:
    .ascii  "Equal to zero \n\0"
    len2 = . - msg2



.text                       ; section declaration - begin code

.globl _main
_main:


# set up test
li      r4, 1		    ; put test number into r4
li      r2, 0		    ; add zero preserve test number
add.    r3, r4, r2	    ; put data into control register



lessthan:		    ; if test less than zero #0
bge     cr0, greaterthan    ; if cr0 zero or greater jump to next section
li      r0, 4		    ; syscall number (sys_write)
li      r3, 1		    ; first argument: file descriptor (stdout)
			    ; second argument: pointer to message to write
lis     r4, ha16(msg0)      ; load top 16 bits of &msg
addi    r4, r4,lo16(msg0)   ; load bottom 16 bits
li      r5, len0	    ; third argument: message length
sc			    ; call kernel
b       done
  
  

greaterthan:		    ; if test greater than zero #1
ble	cr0, equalto		    
li      r0, 4		    ; syscall number (sys_write)
li      r3, 1		    ; first argument: file descriptor (stdout)
			    ; second argument: pointer to message to write
lis     r4, ha16(msg1)      ; load top 16 bits of &msg
addi    r4, r4,lo16(msg1)   ; load bottom 16 bits
li      r5, len1	    ; third argument: message length
sc			    ; call kernel
b       done



equalto:		    ; if test equal to zero #2
bne     cr0, done	    ; go to end if not zero
li      r0, 4		    ; syscall number (sys_write)
li      r3, 1		    ; first argument: file descriptor (stdout)
			    ; second argument: pointer to message to write
lis     r4, ha16(msg2)      ; load top 16 bits of &msg
addi    r4, r4,lo16(msg2)   ; load bottom 16 bits
li      r5, len2	    ; third argument: message length
sc			    ; call kernel




# and exit
done:
li      r0, 1		    ; syscall number (sys_exit)
li      r3, 1		    ; first argument: exit code
sc			    ; call kernel