exporting labels to elf for (a lot) better readability

lib/vm/program.rb

@@ -36,7 +36,7 @@ module Vm
       @main = Block.new("main")
       @exit = Core::Kernel::main_exit Vm::Block.new("main_exit")
     end
-    attr_reader :context , :main , :functions
+    attr_reader :context , :main , :functions , :entry , :exit
     
     def add_object o
       return if @objects.include? o

test/test_runner.rb

@@ -40,7 +40,11 @@ class TestRunner < MiniTest::Test
     binary = program.assemble(StringIO.new )
 
     writer = Elf::ObjectWriter.new(Elf::Constants::TARGET_ARM)
-
+    blocks = program.functions.collect{ |f| [f.entry , f.exit , f.body] } 
+    blocks += [program.entry , program.exit , program.main]
+    blocks.flatten.each do |b|
+      writer.add_symbol b.name.to_s , b.position
+    end
     assembly = program.assemble(StringIO.new)
 
     writer.set_text assembly.string