Placement of pragma Import

[Michal Nowak <vinnie@inetia.pl>]

Hello all,

I have a little question coming out of curiosity.

I have an assembly routine (in fact it may be a C code,
or something other, it does not matter).
I'm importing this subroutine in a package. It is possible
to place pragma Import in two (maybe more?) places:

-- Possibility 1:

package Import_Test is
   
   procedure Asm_Coded;

   pragma Import (Assembler, Asm_Coded, "donothing");   
   pragma Linker_Options ("nothing_asm.s");      
   
end Import_Test;

-- Possibility 2:
package Import_Test is
   
   procedure Asm_Coded;

private   -- Imported in private section

   pragma Import (Assembler, Asm_Coded, "donothing");
   pragma Linker_Options ("nothing_asm.s");      
   
end Import_Test;

And a simple program which makes use of the above package:
---------------------------------
with Import_Test;

procedure Test is
begin
   Import_Test.Asm_Coded;
end Test;
---------------------------------

The generated assembly source for Import_Test and Test subprogram 
is the same in both cases. The program behaves and links in the
same way in both cases, but such test is not a proper way to say
if something is correct (?) or not.
I disassembled the main executable file with objdump and there are
some differences. However, this analysis didn't gave me answer to
what I want to know:
- what is the difference between 1st and 2nd possibility (from Ada
  point of view)?
- if there is a difference, how does it affect program behavior,
  visibility rules, etc.?
- if there is no difference, why?

Thanks for any info,
   - Michal


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