[solved] struc error if sizeof.

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Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 22 Aug 2020, 13:02

I have struc:

Code:

struc ClassZi {.VTab dd 0
.Init dd 0
.b dd 0
.b1 dd 0
.c dd 0
.d dd 0
.d1 dd 0
.name db 256 dup (0) }

When i write mov eax,sizeof.ClassZi i get error.
I try do:
Jim ClassZi
and mov eax,sizeof.Jim i get error

22 Aug 2020, 13:02

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20448
Location: In your JS exploiting you and your system

revolution 22 Aug 2020, 13:08

struc doesn't define anything else other than the structure itself.

Code:

virtual at 0
  ClassZi ClassZi ; instantiate
  sizeof.ClassZi = $ ; measure the size
end virtual

22 Aug 2020, 13:08

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 22 Aug 2020, 13:22

Wow !
Thanks.
Work.

22 Aug 2020, 13:22

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20448
Location: In your JS exploiting you and your system

revolution 23 Aug 2020, 03:59

Another way to give the length/size for each instantiation is this:

Code:

struc foo arg {
        .begin  = $
        .text   db `arg,0
        sizeof.#. = $ - .begin
}
jim     foo jim
Roman   foo Roman
;...
mov ecx,sizeof.jim
mov edx,sizeof.Roman

23 Aug 2020, 03:59

Roman

Joined: 21 Apr 2012
Posts: 1847

Roman 23 Aug 2020, 07:26

Thanks.
Very nice example !

23 Aug 2020, 07:26

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