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Union-related instructions

These instructions are used for unions. Following instructions are covered in this article:

  1. [movas]
  2. [del]

To declare a new union, do this:

.data
    union myUnion: nil ; or anything else

Unions are semi-dynamic, which means you can assign any value type to them, but also you have to reallocate (free) memory every time you change their value:

; to set their value
movas intg ; since it is `nil` 
del &myUnion ; delete the memory

movas string ; new type
mov &myUnion, "Some text" ; now myUnion is a string "Some text", while it was just a number 0

Important notes

  • When we declare an union as nil it is actually saved in memory as an integer with value of 0.
  • We use the movas instruction to tell the system how we will treat unions.