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Index > Windows > getting invalid operand

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mzneo



Joined: 20 Aug 2008
Posts: 8
mzneo
Code:
dwSourceFile dd ?
dwLogFile dd ?


section '.code' code executable readable writeable
start:
      invoke _getmainargs,argc,argv,env,0
      add esp,32
      cmp [argc],3
      jne error
      mov esi,[argv]
      mov dwSourceFile,dword [esi+4]
      mov dwLogFile,dword[esi+8] 
    


i am getting invalid operand @
Code:
mov dwSourceFile,dword [esi+4]
    


i tired changing that but still i am getting the error message
Post 31 Aug 2008, 19:24
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Alphonso



Joined: 16 Jan 2007
Posts: 294
Alphonso
1. You need brackets [dwSourceFile]

2. You cannot move memory to memory, use a register, something like
Code:
mov eax,[esi+4]
mov [dwSourceFile],eax
;or
push [esi+4]
pop [dwSourceFile]    

3. Move your dwSourceFile dd ? , preferably into a data section
Post 31 Aug 2008, 20:36
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mzneo



Joined: 20 Aug 2008
Posts: 8
mzneo
I made the change and its working fine , thanks Alphonso

dwSource was in data section , just pasted part of code Smile
Post 01 Sep 2008, 06:12
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