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using new register instructions

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This commit is contained in:
Torsten Ruger 2014-10-04 12:52:28 +03:00
parent e3c3840bc6
commit 4f7fefb0ab
3 changed files with 10 additions and 11 deletions
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11
lib/register/passes/return_implementation.rb
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@ -4,17 +4,16 @@ module Register
block.codes.dup.each do |code|
next unless code.is_a? Virtual::MethodReturn
new_codes = []
machine = RegisterMachine.instance
slot = Virtual::Slot
# move the current message to new_message
new_codes << machine.mov( slot::MESSAGE_REGISTER , slot::NEW_MESSAGE_REGISTER )
new_codes << RegisterTransfer.new( slot::MESSAGE_REGISTER , slot::NEW_MESSAGE_REGISTER )
# and restore the message from saved value in new_message
new_codes << machine.ldr( slot::MESSAGE_REGISTER ,slot::NEW_MESSAGE_REGISTER , slot::MESSAGE_CALLER )
new_codes << GetSlot.new( slot::MESSAGE_REGISTER , slot::NEW_MESSAGE_REGISTER , slot::MESSAGE_CALLER )
# "roll out" self and frame into their registers
new_codes << machine.ldr( slot::SELF_REGISTER ,slot::MESSAGE_REGISTER , slot::MESSAGE_SELF )
new_codes << machine.ldr( slot::FRAME_REGISTER ,slot::MESSAGE_REGISTER , slot::MESSAGE_FRAME )
new_codes << GetSlot.new( slot::SELF_REGISTER ,slot::MESSAGE_REGISTER , slot::MESSAGE_SELF )
new_codes << GetSlot.new( slot::FRAME_REGISTER ,slot::MESSAGE_REGISTER , slot::MESSAGE_FRAME )
#load the return address into pc, affecting return. (other cpus have commands for this, but not arm)
new_codes << machine.ldr( :pc ,slot::MESSAGE_REGISTER , slot::MESSAGE_RETURN_ADDRESS )
new_codes << FunctionReturn.new( slot::MESSAGE_REGISTER , slot::MESSAGE_RETURN_ADDRESS )
block.replace(code , new_codes )
end
end

6
lib/virtual/passes/enter_implementation.rb
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@ -1,4 +1,4 @@
module Register
module Virtual
class EnterImplementation
def run block
@ -7,11 +7,11 @@ module Register
new_codes = []
# save return register and create a new frame
# lr is link register, ie where arm stores the return address when call is issued
new_codes << RegisterMachine.instance.str( :lr , Virtual::Slot::MESSAGE_REGISTER , Virtual::Slot::MESSAGE_RETURN_ADDRESS )
new_codes << Register::SaveReturn.new( Virtual::Slot::MESSAGE_REGISTER , Virtual::Slot::MESSAGE_RETURN_ADDRESS )
new_codes << Virtual::NewFrame.new
block.replace(code , new_codes )
end
end
end
Virtual::BootSpace.space.add_pass_after "Register::EnterImplementation" , "Virtual::GetImplementation"
Virtual::BootSpace.space.add_pass_after "Virtual::EnterImplementation" , "Virtual::GetImplementation"
end

4
lib/virtual/passes/send_implementation.rb
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@ -22,13 +22,13 @@ module Virtual
# get the function from my class. easy peasy
method = me.clazz.get_instance_method(code.name)
raise "Method not implemented #{clazz.name}.#{code.name}" unless method
new_codes << FunctionCall.new( method )
new_codes << Register::FunctionCall.new( method )
else
# note: this is the current view: call internal send, even the method name says else
# but send is "special" and accesses the internal method name and resolves.
kernel = Virtual::BootSpace.space.get_or_create_class(:Kernel)
method = kernel.get_instance_method(:__send)
new_codes << FunctionCall.new( method )
new_codes << Register::FunctionCall.new( method )
raise "unimplemented #{code}"
end
else