feat: almost implemented arrays

src/main/wacc/backend/assemblyIR.scala

@@ -48,7 +48,9 @@ object assemblyIR {
     case Scanf,
       Fflush,
       Exit,
-      PrintF
+      PrintF,
+      Malloc,
+      Free
 
     private val plt = "@plt"
 
@@ -57,6 +59,8 @@ object assemblyIR {
       case Fflush => "fflush" + plt
       case Exit   => "exit" + plt
       case PrintF => "printf" + plt
+      case Malloc => "malloc" + plt
+      case Free   => "free" + plt
     }
   }
 
@@ -72,13 +76,20 @@ object assemblyIR {
       case reg: Register => opSize.toString + s"[$reg]"
     }
   }
+
+  // TODO to string is wacky
   case class IndexAddress(
       base: Register,
       offset: Int | LabelArg,
-      opSize: SizeDir = SizeDir.Unspecified
+      indexReg: Register = Register(RegSize.R64, RegName.AX),
+      scale: Int = 0
   ) extends Dest
       with Src {
-    override def toString = s"$opSize[$base + $offset]"
+    override def toString = if (scale != 0) {
+      s"[$base + $indexReg * $scale + $offset]"
+    } else {
+      s"[$base + $offset]"
+    }
   }
 
   case class ImmediateVal(value: Int) extends Src {
@@ -185,7 +196,7 @@ object assemblyIR {
 
     override def toString(): String = this match {
       case Byte        => "byte " + ptr
-      case Word        => "word " + ptr // TODO check word/doubleword/quadword
+      case Word        => "word " + ptr
       case DWord       => "dword " + ptr
       case Unspecified => ""
     }