Wrote the first batch of directive handling code, so far just handling creating variables.

misc/test.asm

@@ -1,34 +1,7 @@
-.include "./another_test.asm"
+;.include "./another_test.asm"
 
 .db video_start 0xF37F
 .db msg "Hello, world!", 0
 .db NOTERM "No terminating byte here"
 .db null_byte 0
 
-load r1, msg ; Because the lod* instructions can't load an address
-               ; from anything but a register, this becomes laa r1, [msg]
-
-;Routine: string_length
-;In: String address in r1
-;Out: Length in R2
-
-string_length:
-load byte r3, [r1] ; Load the byte from the address in R1, into R3
-load r2, 0 ; String length
-cmp r3, null_byte ; Is R3 a null byte?
-je end
-inc r2
-start:
-    inc r1
-start:
-    inc r1 ; next char
-    loadb r3, [r1] ; Load the next character byte into R3
-    cmp r3, 0 ; Null byte?
-    je end
-    inc r2 ; Nope, increment the length counter
-    jmp start
-
-end:
-
-pop r8  ;pop the return address from the stack into register 8
-jmp [r8] ;jump to that address