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module Risc | |
# RegToSlot moves data into memory from a register. | |
# SlotToReg moves data into a register from memory. | |
# Both use a base memory (a register) | |
# This is because that is what cpu's can do. In programming terms this would be accessing | |
# an element in an array, in the case of RegToSlot setting the register in the array. | |
# btw: to move data between registers, use Transfer | |
class RegToSlot < Setter | |
end | |
# Produce a RegToSlot instruction. | |
# From and to are registers | |
# index may be a Symbol in which case is resolves with resolve_index. | |
# | |
# The slot is ultimately a memory location, so no new register is created | |
def self.reg_to_slot( source , from , to , index ) | |
raise "Not register #{to}" unless RegisterValue.look_like_reg(to) | |
index = to.resolve_index(index) if index.is_a?(Symbol) | |
RegToSlot.new( source, from , to , index) | |
end | |
end |