20 lines
684 B
Ruby
20 lines
684 B
Ruby
module Virtual
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class EnterImplementation
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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::MethodEnter
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new_codes = []
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# save return register and create a new frame
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# lr is link register, ie where arm stores the return address when call is issued
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new_codes << Register::SaveReturn.new( Register::RegisterReference.message_reg , Virtual::RETURN_INDEX )
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unless code.method.locals.empty? and code.method.tmps.empty?
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new_codes << Virtual::NewFrame.new
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end
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block.replace(code , new_codes )
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end
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end
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end
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Virtual.machine.add_pass "Virtual::EnterImplementation"
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end
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