fix the putstring sys call indexing

index 0 is the marker word , so like in some, all indexes 1 based
works :-)

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/salama/salama-arm.git
-  revision: 72fcf371bc42279676533142c82e34713e77ea75
+  revision: c711d34418f08bb2d7c5fea3cbe4149bdd22aa61
   specs:
     salama-arm (0.3.0)
 

lib/arm/translator.rb

@@ -128,9 +128,8 @@ module Arm
     end
 
     def putstring int_code
-      codes = ArmMachine.ldr( :r1 , Register.message_reg, 4 * Register.resolve_index(:message , :receiver) - 4)
-      codes.append ArmMachine.ldr( :r2 ,  :r1 , 4 ) # String length
-      codes.append ArmMachine.add( :r1 ,  :r1 , 8 ) # adjust for object header
+      codes = ArmMachine.ldr( :r2 ,  :r1 , 8 ) # String length
+      codes.append ArmMachine.add( :r1 ,  :r1 , 12 ) # adjust for object header
       codes.append ArmMachine.mov( :r0 ,  1 )  # write to stdout == 1
       syscall(int_code , codes )
     end

lib/register/builtin/kernel.rb

@@ -66,7 +66,6 @@ module Register
           compiler.add_code RegisterTransfer.new(source, r8 , Register.message_reg )
           # save the return value into the message
           compiler.add_code Register.set_slot( source , return_tmp , :message , :return_value )
-          # and "unroll" self and frame
         end
       end
       extend ClassMethods

test/elf/test_hello.rb

@@ -15,7 +15,7 @@ class HelloTest < MiniTest::Test
     @string_input    = <<HERE
 class Object
   int main()
-    "Hello again\n".putstring()
+    return "Hello again\n".putstring()
   end
 end
 HERE