move all position setting into position

Position and subclasses handle the logic, external to
the classes, so it can be swapped out later
(at runtime positions can’t change)

test/arm/test_logic.rb

@@ -82,22 +82,22 @@ module Arm
     end
     def test_too_big_add
       code = @machine.add	 :r1 , :r1, 0x222
-      code.set_position(0,0)
+      Risc::Position.set(0,0)
       # add 0x02 (first instruction) and then 0x220 shifted
       assert_code code , :add , [0x02,0x1c,0x91,0xe2] #e2 91 1e 02
       # added extra instruction to add "extra"
       assert_code code.next , :add , [0x22,0x10,0x91,0xe2] #e2 91 10 22
     end
 
-    def label pos = 0x22 + 8
+    def label( pos = 0x22 + 8)
       l  = Risc.label("some" , "Label")
-      l.set_position   pos
+      Risc::Position.set(l,pos , 1)
       l
     end
 
     def test_move_object
       code = @machine.add( :r1 , label)
-      code.set_position(0,0)
+      Risc::Position.set(code,0,0)
       assert_code code , :add , [0x22,0x10,0x9f,0xe2] #e2 9f 10 22
     end
 

test/arm/test_move.rb

@@ -22,7 +22,7 @@ module Arm
     end
     def test_mov_big
       code = @machine.mov  :r0,  0x222  # is not 8 bit and can't be rotated by the arm system in one instruction
-      code.set_position(0,0)
+      Risc::Position.set(code,0,1)
       begin  # mov 512(0x200) = e3 a0 0c 02    add 34(0x22) = e2 90 00 22
         assert_code code , :mov , [ 0x02,0x0c,0xb0,0xe3]
       rescue Risc::LinkException

test/risc/test_padding.rb

@@ -42,7 +42,7 @@ module Risc
     end
     def test_pos_arm
       mov = Arm::ArmMachine.mov  :r1,  128
-      mov.set_position(0,0)
+      Risc::Position.set(0,0)
     end
 
   end

test/risc/test_position1.rb

@@ -1,8 +1,12 @@
 require_relative "../helper"
 
 module Risc
-  class TestPosition < MiniTest::Test
+  class TestPositionBasic < MiniTest::Test
 
+    def setup
+      Risc.machine.boot
+      @binary = Parfait::BinaryCode.new(1)
+    end
     def test_creation_ok
       assert Position.new(0)
     end
@@ -26,7 +30,7 @@ module Risc
       assert_equal 5 , pos.at
     end
     def test_set_instr
-      pos = Position.set( Risc::Label.new("hi","ho") , 0)
+      pos = Position.set( Risc::Label.new("hi","ho") , 0 , @binary)
       assert_equal IPosition , pos.class
     end
     def tet_tos