98 lines
2.8 KiB
Scala
98 lines
2.8 KiB
Scala
package wacc
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object assemblyIR {
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sealed trait Operand
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// did not use option because we'd have to wrap each op around Some(). can refactor
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case object NoOperand extends Operand {
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override def toString = ""
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}
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sealed trait Src extends Operand // mem location, register and imm value
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sealed trait Dest extends Operand // mem location and register
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enum RegSize {
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case R64
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case E32
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override def toString = this match {
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case R64 => "r"
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case E32 => "e"
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}
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}
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//arguments
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enum CLibFunc extends Operand {
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case Scanf,
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Puts,
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Fflush,
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Exit,
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PrintF
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private val plt = "@plt"
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override def toString = this match {
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case Scanf => "scanf" + plt
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case Puts => "puts" + plt
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case Fflush => "fflush" + plt
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case Exit => "exit" + plt
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case PrintF => "printf" + plt
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}
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}
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enum Register extends Dest with Src {
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case Named(name: String, size: RegSize)
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case Scratch(num: Int, size: RegSize)
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override def toString = this match {
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case Named(name, size) => s"${size}${name.toLowerCase()}"
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case Scratch(num, size) => s"${size}${num}"
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}
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}
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case class MemLocation(pointer: Long | Register) extends Dest with Src {
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override def toString = pointer match {
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case hex: Long => f"[0x$hex%X]"
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case reg: Register => s"[$reg]"
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}
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}
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case class ImmediateVal(value: Int) extends Src {
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override def toString = s"#${value.toString}"
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}
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case class LabelArg(name: String) extends Operand {
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override def toString = name
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}
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//TODO Check if dest and src are not both memory locations
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abstract class Operation(ins: String, op1: Operand = NoOperand, op2: Operand = NoOperand) {
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override def toString: String = if (op2 == NoOperand) {
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s"$ins ${op1.toString}"
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} else {
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s"$ins ${op1.toString}, ${op2.toString}"
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}
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}
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case class Add(op1: Dest, op2: Src) extends Operation("add", op1, op2)
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case class Subtract(op1: Dest, op2: Src) extends Operation("sub", op1, op2)
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case class Multiply(op1: Src) extends Operation("mul", op1)
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case class Divide(op1: Src) extends Operation("div", op1)
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case class And(op1: Dest, op2: Src) extends Operation("and", op1, op2)
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case class Or(op1: Dest, op2: Src) extends Operation("or", op1, op2)
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case class Compare(op1: Dest, op2: Src) extends Operation("cmp", op1, op2)
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//stack operations
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case class Push(op1: Src) extends Operation("push", op1)
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case class Pop(op1: Src) extends Operation("pop", op1)
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case class Call(op1: CLibFunc) extends Operation("call", op1)
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case class Return() extends Operation("ret")
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case class Jump(op1: LabelArg) extends Operation("jmp", op1)
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case class JumpIfEqual(op1: LabelArg) extends Operation("je", op1)
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case class LabelDef(name: String) {
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override def toString = s"$name:"
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}
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}
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