Can I declare a qqword label in struct?

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tripledot

Joined: 06 Jan 2009
Posts: 49

tripledot 14 Apr 2012, 18:02

I'm sure I'm missing something obvious...

Code:

struct  Foo
        bar     dq      4 dup ?
ends

vmovapd ymm0, [Foo.bar] ; Error: operand sizes do not match
vmovapd ymm0, qqword [Foo.bar] ; Assembles OK

I'm getting a bit fed up of qualifying every memory operand with "qqword". Is there a way of defining a label inside a struct that fasm "knows" is a qqword, so I don't have to specify an operand size override?

14 Apr 2012, 18:02

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8356
Location: Kraków, Poland

Tomasz Grysztar 14 Apr 2012, 18:37

No, currently the "struct" macro does not have such facilities. You would have to go with the low-level "struc" approach:

Code:

struc Foo {
  label .bar qqword
             dq 4 dup ?
}

virtual at 0
  Foo Foo
end virtual

vmovapd ymm0,[Foo.bar]

14 Apr 2012, 18:37

tripledot

Joined: 06 Jan 2009
Posts: 49

tripledot 14 Apr 2012, 18:40

Gotcha. I hardly ever use "struc"; I rely on "sizeof" quite a lot. I'll just grin and bear it, it was only a small gripe.

BTW, thanks for the latest version! Stupendously good service, as always! Smile

14 Apr 2012, 18:40

l_inc

Joined: 23 Oct 2009
Posts: 881

l_inc 14 Apr 2012, 19:10

Another way is to define the label independently:

Code:

struct  Foo
        bar     dq      4 dup ? 
ends
label Foo.qqBar qqword at Foo.bar

vmovapd ymm0, [Foo.qqBar]

14 Apr 2012, 19:10

tripledot

Joined: 06 Jan 2009
Posts: 49

tripledot 14 Apr 2012, 19:20

Aha! That I like. Thanks, l_inc!

14 Apr 2012, 19:20

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