getting invalid operand

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mzneo

Joined: 20 Aug 2008
Posts: 8

mzneo 31 Aug 2008, 19:24

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

31 Aug 2008, 19:24

Alphonso

Joined: 16 Jan 2007
Posts: 295

Alphonso 31 Aug 2008, 20:36

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

31 Aug 2008, 20:36

mzneo

Joined: 20 Aug 2008
Posts: 8

mzneo 01 Sep 2008, 06:12

I made the change and its working fine , thanks Alphonso

dwSource was in data section , just pasted part of code Smile

01 Sep 2008, 06:12

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