Enabled arm64 encoding

src/asmc/compileARM.go

@@ -1,23 +1,54 @@
 package asmc
 
 import (
+	"fmt"
+
 	"git.urbach.dev/cli/q/src/arm"
 	"git.urbach.dev/cli/q/src/asm"
 )
 
 func (c *compiler) compileARM(x asm.Instruction) {
 	switch x.Mnemonic {
-	// case asm.MOVE:
-	// 	switch operands := x.Data.(type) {
-	// 	case *asm.RegisterNumber:
-	// 		c.code = arm.MoveRegisterNumber(c.code, operands.Register, operands.Number)
-	// 	}
+	case asm.CALL:
+		switch data := x.Data.(type) {
+		case *asm.Label:
+			position := len(c.code)
+			c.code = arm.Call(c.code, 0)
 
-	// case asm.RETURN:
-	// 	c.code = arm.Return(c.code)
+			pointer := &pointer{
+				Position: Address(position),
+				OpSize:   0,
+				Size:     4,
+			}
 
-	// case asm.SYSCALL:
-	// 	c.code = arm.Syscall(c.code)
+			pointer.Resolve = func() Address {
+				destination, exists := c.codeLabels[data.Name]
+
+				if !exists {
+					panic(fmt.Sprintf("unknown jump label %s", data.Name))
+				}
+
+				distance := (destination - pointer.Position) / 4
+				return arm.EncodeCall(distance)
+			}
+
+			c.codePointers = append(c.codePointers, pointer)
+		}
+
+	case asm.LABEL:
+		c.codeLabels[x.Data.(*asm.Label).Name] = Address(len(c.code))
+
+	case asm.MOVE:
+		switch operands := x.Data.(type) {
+		case *asm.RegisterNumber:
+			c.code = arm.MoveRegisterNumber(c.code, operands.Register, operands.Number)
+		}
+
+	case asm.RETURN:
+		c.code = arm.Return(c.code)
+
+	case asm.SYSCALL:
+		c.code = arm.Syscall(c.code)
 
 	default:
 		c.code = arm.Nop(c.code)