register access fixes
since the constants moved
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@ -1,28 +1,28 @@
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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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Register::RegisterReference.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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Register::RegisterReference.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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Register::RegisterReference.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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Register::RegisterReference.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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# 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 (TODO!)
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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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@ -30,9 +30,9 @@ module Register
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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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tmp = RegisterReference.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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if( code.from.is_a? Parfait::Value)
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move1 = LoadConstant.new( tmp , code.from )
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else # while otherwise we "load"
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move1 = GetSlot.new( tmp , code.from.reg , code.from.index )
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@ -6,7 +6,9 @@ module Register
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# In other words a simple level of indirection, or change from value to reference sematics.
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class RegisterReference
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attr_accessor :symbol
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def initialize r
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if( r.is_a? Fixnum)
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r = "r#{r}".to_sym
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@ -39,13 +41,13 @@ module Register
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def self.self_reg
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new SELF_REG
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end
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def self.messsage_reg
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def self.message_reg
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new MESSAGE_REG
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end
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def self.frame_reg
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new FRAME_REG
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end
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def self.new_messsage_reg
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def self.new_message_reg
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new NEW_MESSAGE_REG
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end
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def self.tmp_reg
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@ -17,27 +17,25 @@ module Virtual
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def run block
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block.codes.dup.each do |code|
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if code.is_a?(NewFrame)
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kind = :next_frame
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kind = "next_frame"
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elsif code.is_a?(NewMessage)
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kind = :next_message
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kind = "next_message"
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else
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next
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end
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space = Parfait::Space.object_space
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slot = Virtual::Slot
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# a place to store a reference to the space, we grab the next_frame from the space
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space_tmp = Register::RegisterReference.new(Virtual::Message::TMP_REG)
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space_tmp = Register::RegisterReference.tmp_reg
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# a temporary place to store the new frame
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frame_tmp = space_tmp.next_reg_use
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# move the spave to it's register (mov instruction gets the address of the object)
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new_codes = [ Register::LoadConstant.new( space_tmp , space )]
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# find index in the space wehre to grab frame/message
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ind = space.layout[:names].index(kind)
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raise "index not found for :#{kind}" unless ind
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new_codes = [ Register::LoadConstant.new( space_tmp , Parfait::Space.object_space )]
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# find index in the space where to grab frame/message
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ind = Parfait::Space.object_space.get_layout().index_of( kind )
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raise "index not found for #{kind}.#{kind.class}" unless ind
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# load the frame/message from space by index
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new_codes << Register::GetSlot.new( frame_tmp , space_tmp , 5 )
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# save the frame in real frame register
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new_codes << Register::RegisterTransfer.new( Virtual::Message::FRAME_REG , frame_tmp )
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new_codes << Register::RegisterTransfer.new( Register::RegisterReference.frame_reg , frame_tmp )
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# get the next_frame
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new_codes << Register::GetSlot.new( frame_tmp , frame_tmp , 2 ) # 2 index of next_frame
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# save next frame into space
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