slightly better enter

2014-08-26 16:15:00 +03:00 · 2014-08-26 16:15:00 +03:00 · 888acdca0c
commit 888acdca0c
parent 714cd2a5d6
1 changed files with 6 additions and 1 deletions
--- a/lib/register/enter_implementation.rb
+++ b/lib/register/enter_implementation.rb
@ -5,7 +5,12 @@ module Register
      block.codes.dup.each do |code|
        next unless code.is_a? Virtual::MethodEnter
        # save return register and create a new frame
-        block.replace(code , [] )
+        to = RegisterReference.new(:r0)  # message base
+        tmp = RegisterReference.new(:r5) # tmp
+        pc = RegisterReference.new(:pc)
+        move1 = RegisterMachine.instance.ldr( tmp , pc )
+        move2 = RegisterMachine.instance.ldr( tmp , to , 3 ) #TODO 3 == return reg, needs constant / layout
+        block.replace(code , [move1,move2] )
      end
    end
  end