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use register instructions

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This commit is contained in:
Torsten Ruger 2014-10-04 17:22:23 +03:00
parent 9939c6afa0
commit d7d2622d7f
1 changed files with 5 additions and 6 deletions
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11
lib/virtual/passes/frame_implementation.rb
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@ -24,25 +24,24 @@ module Virtual
next
end
space = BootSpace.space
machine = Register::RegisterMachine.instance
slot = Virtual::Slot
# a place to store a reference to the space, we grab the next_frame from the space
space_tmp = Register::RegisterReference.new(Virtual::Message::TMP_REG)
# a temporary place to store the new frame
frame_tmp = space_tmp.next_reg_use
# move the spave to it's register (mov instruction gets the address of the object)
new_codes = [ machine.mov( space_tmp , space )]
new_codes = [ Register::RegisterTransfer.new( space_tmp , space )]
# find index in the space wehre to grab frame/message
ind = space.layout[:names].index(kind)
raise "index not found for :#{kind}" unless ind
# load the frame/message from space by index
new_codes << machine.ldr( frame_tmp , space_tmp , 5 )
new_codes << Register::GetSlot.new( frame_tmp , space_tmp , 5 )
# save the frame in real frame register
new_codes << machine.mov( Virtual::Message::FRAME_REG , frame_tmp )
new_codes << Register::RegisterTransfer.new( Virtual::Message::FRAME_REG , frame_tmp )
# get the next_frame
new_codes << machine.ldr( frame_tmp , frame_tmp , 2 ) # 2 index of next_frame
new_codes << Register::GetSlot.new( frame_tmp , frame_tmp , 2 ) # 2 index of next_frame
# save next frame into space
new_codes << machine.str( frame_tmp , space_tmp , ind)
new_codes << Register::SetSlot.new( frame_tmp , space_tmp , ind)
block.replace(code , new_codes )
end
end