invoke (???)

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ouadji

Joined: 24 Dec 2008
Posts: 1081
Location: Belgium

ouadji 15 Jun 2011, 17:18

this below does compile Shocked

Code:

 invoke  EndDialog,[hwnd_dlg],1 2 ; not ,1,2 ... but ,1 2 <-- !!!

Result

Code:

        push 1
      push 2
      push [hwnd_dlg]
     call EndDialog

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I am not young enough to know everything (Oscar Wilde)-

15 Jun 2011, 17:18

idle

Joined: 06 Jan 2011
Posts: 440
Location: Ukraine

idle 15 Jun 2011, 17:21

push 1 2 =
push 1
push 2

15 Jun 2011, 17:21

ouadji

Joined: 24 Dec 2008
Posts: 1081
Location: Belgium

ouadji 15 Jun 2011, 17:29

the comma is not essential with "invoke"?

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I am not young enough to know everything (Oscar Wilde)-

15 Jun 2011, 17:29

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 15 Jun 2011, 17:32

the comma is not essential with "push".

15 Jun 2011, 17:32

typedef

Joined: 25 Jul 2010
Posts: 2909
Location: 0x77760000

typedef 15 Jun 2011, 18:00

i see a space and therefore i can say you are pushing too many argument.s

15 Jun 2011, 18:00

ouadji

Joined: 24 Dec 2008
Posts: 1081
Location: Belgium

ouadji 15 Jun 2011, 18:22

sorry, i don't understand
"invoke" is not "push"
and push doesn't work with a comma.

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I am not young enough to know everything (Oscar Wilde)-

15 Jun 2011, 18:22

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 15 Jun 2011, 18:40

ouadji, but invoke internally uses push and passes the entire argument ("1 2"), so invoke gives this to the assembler:

Code:

push 1 2
push [hwnd_dlg]
call [EndDialog]

And then the assembler gives you_

Code:

push 1
push 2
push [hwnd_dlg]
call [EndDialog]

I really hope this PUSH/POP multi-operands support not be present in fasm 2, it helps so little and can do so much harm in situations like this or even when using mathematical expressions...

15 Jun 2011, 18:40

ouadji

Joined: 24 Dec 2008
Posts: 1081
Location: Belgium

ouadji 15 Jun 2011, 19:11

ok, understood, tkank you Loco

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I am not young enough to know everything (Oscar Wilde)-

15 Jun 2011, 19:11

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 15 Jun 2011, 20:44

Loco: I agree in same cases this can cause ambiguity (eg. push 10 20 -1 5), but on other side, cases where you need to push multiple things are SO much more common. Practically every procedure has to do so.

15 Jun 2011, 20:44

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20421
Location: In your JS exploiting you and your system

revolution 15 Jun 2011, 23:03

The only reason push allows spaces in operands is to support uses in procs. MS were too lazy to write a proper parser syntax so just allowed spaces instead. And now we get this type of problem. The law of unintended consequences. Sad

15 Jun 2011, 23:03

vid
Verbosity in development

Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia

vid 16 Jun 2011, 00:13

Are you sure this is the real reason? I quite doubt that.

16 Jun 2011, 00:13

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