Implemented type checks

src/build/core/CompileSyscall.go

@@ -0,0 +1,32 @@
+package core
+
+import (
+	"git.akyoto.dev/cli/q/src/build/expression"
+)
+
+// CompileSyscall executes a kernel syscall.
+func (f *Function) CompileSyscall(root *expression.Expression) error {
+	parameters := root.Children[1:]
+	registers := f.CPU.SyscallInput[:len(parameters)]
+	err := f.ExpressionsToRegisters(parameters, registers)
+
+	if err != nil {
+		return err
+	}
+
+	for _, register := range f.CPU.SyscallOutput {
+		f.SaveRegister(register)
+	}
+
+	f.Syscall()
+
+	for _, register := range registers {
+		if register == f.CPU.SyscallOutput[0] && root.Parent != nil {
+			continue
+		}
+
+		f.FreeRegister(register)
+	}
+
+	return nil
+}