47 lines
1.5 KiB
Ruby
47 lines
1.5 KiB
Ruby
Virtual::MessageSlot.class_eval do
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def reg
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Register::RegisterReference.new(Virtual::Message::MESSAGE_REG )
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end
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end
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Virtual::FrameSlot.class_eval do
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def reg
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Register::RegisterReference.new(Virtual::Message::FRAME_REG )
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end
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end
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Virtual::SelfSlot.class_eval do
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def reg
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Register::RegisterReference.new(Virtual::Message::SELF_REG )
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end
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end
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Virtual::NewMessageSlot.class_eval do
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def reg
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Register::RegisterReference.new(Virtual::Message::NEW_MESSAGE_REG )
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end
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end
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module Register
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# This implements setting of the various slot variables the vm defines.
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# Basic mem moves, but have to shuffle the type nibbles
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class SetImplementation
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def run block
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block.codes.dup.each do |code|
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next unless code.is_a? Virtual::Set
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# resolve the register and offset that we need to move to
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to = code.to.reg
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# need a temporay place because of indexed load/store
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tmp = RegisterReference.new(Virtual::Message::TMP_REG)
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# for constants we have to "move" the constants value
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if( code.from.is_a? Virtual::Constant)
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move1 = RegisterMachine.instance.mov( tmp , code.from )
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else # while otherwise we "load"
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move1 = RegisterMachine.instance.ldr( tmp , code.from.reg , code.from.index )
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end
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move2 = RegisterMachine.instance.str( tmp , to , code.to.index )
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block.replace(code , [move1,move2] )
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end
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end
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end
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Virtual::BootSpace.space.add_pass_after SetImplementation , Virtual::GetImplementation
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end
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