Syntax problem?

flat assembler
Message board for the users of flat assembler.

Index > Main > Syntax problem?

Author

Thread

moriman

Joined: 01 Apr 2006
Posts: 55
Location: Northern Ireland

moriman 13 May 2006, 17:48

Am trying to set up a proc but stumbling at first hurdle Sad

Code:

invoke  Get2Numbers, [edi], eax


proc Get2Numbers, myStart, myLength
;                .
;                .
;                .
;                .
        ret
endp

This generates an error: operand size not specified. during compilation. Have tried adding :DWORD to variables in proc and also dword [edi] in the invoke but still same error.

13 May 2006, 17:48

dead_body

Joined: 21 Sep 2005
Posts: 187
Location: Ukraine,Kharkov

dead_body 13 May 2006, 18:25

invoke Get2Numbers, dword [edi], eax

13 May 2006, 18:25

UCM

Joined: 25 Feb 2005
Posts: 285
Location: Canada

UCM 13 May 2006, 19:16

its not invoke, its stdcall since invoke is for Win32 api functions.
stdcall has the same syntax, just replace invoke with stdcall.

13 May 2006, 19:16

moriman

Joined: 01 Apr 2006
Posts: 55
Location: Northern Ireland

moriman 13 May 2006, 19:31

Thx UCM

dead_body) It is more helpful if you read the OP Wink

Quote:

moriman...
"Have tried ...and also dword [edi] in the invoke..."

dead_body...
"invoke Get2Numbers, dword [edi], eax"

13 May 2006, 19:31

okasvi

Joined: 18 Aug 2005
Posts: 382
Location: Finland

okasvi 13 May 2006, 22:46

UCM wrote:

its not invoke, its stdcall since invoke is for Win32 api functions.
stdcall has the same syntax, just replace invoke with stdcall.

nope, try

Code:

_Get2Numbers rd 1
push dword Get2Numbers
pop dword [_Get2Numbers]
invoke _Get2Numbers,param,param

'invoke function' does 'call [function]' while 'stdcall function' does 'call function'
Wink

_________________
When We Ride On Our Enemies
support reverse smileys |:

13 May 2006, 22:46

moriman

Joined: 01 Apr 2006
Posts: 55
Location: Northern Ireland

moriman 14 May 2006, 00:19

I changed my call from invoke to stdcall as suggested by UCM and everything is working fine for me¿

14 May 2006, 00:19

UCM

Joined: 25 Feb 2005
Posts: 285
Location: Canada

UCM 15 May 2006, 21:22

okasvi: yes, i know that. but it's less efficient (and pointless.)
you could just do this:

Code:

_Get2Numbers dd 90909090h ;so that it can be executed 
mov [_Get2Numbers],Get2Numbers
invoke _Get2Numbers, blah, blah

15 May 2006, 21:22

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum