32 lines
812 B
Ruby
32 lines
812 B
Ruby
module Register
|
|
|
|
# transfer the constents of one register to another.
|
|
# possibly called move in some cpus
|
|
|
|
# There are other instructions to move data from / to memory, namely GetSlot and SetSlot
|
|
|
|
# Get/Set Slot move data around in vm objects, but transfer moves the objects (in the machine)
|
|
#
|
|
# Also it is used for moving temorary data
|
|
#
|
|
|
|
class RegisterTransfer < Instruction
|
|
# initialize with from and to registers.
|
|
# First argument from
|
|
# second argument to
|
|
#
|
|
# Note: this may be reversed from some assembler notations (also arm)
|
|
def initialize source , from , to
|
|
super(source)
|
|
@from = wrap_register(from,:int)
|
|
@to = wrap_register(to,:int)
|
|
end
|
|
attr_reader :from, :to
|
|
|
|
def to_s
|
|
"RegisterTransfer: #{from} -> #{to}"
|
|
end
|
|
|
|
end
|
|
end
|