Problem with linking or what?

Hi!

I have a problem with linking fasm and C code (GCC + LD).
This is a test source code with some calls to the same target:

Code:

    call KERNEL_CODE_SEL:_interrupt_handler
    call KERNEL_CODE_SEL:_interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call _interrupt_handler
    call dword [_interrupt_handler]
    call dword [_interrupt_handler]
    call dword [_interrupt_handler]
    call dword [_interrupt_handler]
    call [_interrupt_handler]
    call [_interrupt_handler]
    call [_interrupt_handler]
    call [_interrupt_handler]
    call [_interrupt_handler]
    mov eax,_interrupt_handler
    mov eax,[_interrupt_handler]

For the format ms coff parameter all addresses are equal, which makes quite sense Smile

Code:

00201721: 9A5A0020000800               call        00008:00020005A
00201728: 9A5A0020000800               call        00008:00020005A
0020172F: E826E9FFFF                   call        00020005A  ---X
00201734: E821E9FFFF                   call        00020005A  ---X
00201739: E81CE9FFFF                   call        00020005A  ---X
0020173E: E817E9FFFF                   call        00020005A  ---X
00201743: E812E9FFFF                   call        00020005A  ---X
00201748: E80DE9FFFF                   call        00020005A  ---X
0020174D: E808E9FFFF                   call        00020005A  ---X
00201752: E803E9FFFF                   call        00020005A  ---X
00201757: FF155A002000                 call        d,[0020005A]
0020175D: FF155A002000                 call        d,[0020005A]
00201763: FF155A002000                 call        d,[0020005A]
00201769: FF155A002000                 call        d,[0020005A]
0020176F: FF155A002000                 call        d,[0020005A]
00201775: FF155A002000                 call        d,[0020005A]
0020177B: FF155A002000                 call        d,[0020005A]
00201781: FF155A002000                 call        d,[0020005A]
00201787: FF155A002000                 call        d,[0020005A]
0020178D: B85A002000                   mov         eax,00020005A
00201792: A15A002000                   mov         eax,[0020005A]

But for the same source compiled with format coff parameter, the output code goes like this:

Code:

00201721: 9A5A0020000800               call        00008:00020005A
00201728: 9A5A0020000800               call        00008:00020005A
0020172F: E80EE9FFFF                   call        000200042  ---X
00201734: E804E9FFFF                   call        00020003D  ---X
00201739: E8FAE8FFFF                   call        000200038  ---X
0020173E: E8F0E8FFFF                   call        000200033  ---X
00201743: E8E6E8FFFF                   call        00020002E  ---X
00201748: E8DCE8FFFF                   call        000200029  ---X
0020174D: E8D2E8FFFF                   call        000200024  ---X
00201752: E8C8E8FFFF                   call        00020001F  ---X
00201757: FF155A002000                 call        d,[0020005A]
0020175D: FF155A002000                 call        d,[0020005A]
00201763: FF155A002000                 call        d,[0020005A]
00201769: FF155A002000                 call        d,[0020005A]
0020176F: FF155A002000                 call        d,[0020005A]
00201775: FF155A002000                 call        d,[0020005A]
0020177B: FF155A002000                 call        d,[0020005A]
00201781: FF155A002000                 call        d,[0020005A]
00201787: FF155A002000                 call        d,[0020005A]
0020178D: B85A002000                   mov         eax,00020005A
00201792: A15A002000                   mov         eax,[0020005A]

You see, that the the call _interrupt_handler acts in some strange way above, and every time it gives different call address Smile

So my question is: is it a bug or am I missing something?

And of course, LD's map file shows 0x0020005a as the address for _interrupt_handler procedure.

Best regards,
TJ