OBE Messages: nm.exe output extrn for fasm

Sunday 17 June 2012

nm.exe output extrn for fasm

just did a script to process nm.exe output

usage:

D:\MinGW\lib>nm -g libuser32.a > C:\nmlibuser32.txt

For ANSI

C:\>cscript.exe /nologo nm2extrn.vbs C:\nmlibuser32.txt > libuser32a.inc

For UNICODE

C:\>cscript.exe /nologo nm2extrn.vbs C:\nmlibuser32.txt 1 > libuser32w.inc

copy and save the below code as nm2extrn.vbs

Update - 2012 06 18 | 12:42 AM

maybe you need to separate those extrn files into xp, vista & 7 because some API is not available in xp, if you ld it and execute the application, you will get error like

The procedure entry point GetTouchInputInfo could not be located in the dynamic link library USER32.dll.

Update - 2012 06 18 | 09:59 PM

now support api that without @
eg.
00000000 I __imp__iupdrvWarpPointer

use this fasm macro to auto extrn match API that we use in asm source

macro extrn stuff {
  match text =as name:type,stuff \{
    if used name
      extrn text as name:type
    end if
  \}
}

special thanks to revolution!

[code]

Dim funcname              ' lstrcatW
Dim functype              ' A or W or etc
Dim funcextrn             ' __imp__wvsprintfW / __imp__iupdrvWarpPointer
Dim funcextrn1            ' @12
Dim funcextrnjoin         ' __imp__wvsprintfW@12
Dim unicode

Dim nmcontent             ' content read from nm generated file
Dim nmarray               ' split into array by vbCrLf
Dim i

unicode = 0

Function ReadFile( fname )
 Dim fso
 Const ForReading = 1
 Set fso = CreateObject("Scripting.FileSystemObject")
 Set fnm = fso.OpenTextFile(fname, ForReading)
 ReadFile = fnm.ReadAll
 fnm.Close 
End Function

Function SplitSpaceISpace( fcontent )
 Dim breaki, breakimp, breaka

 If InStr( fcontent, " I " ) Then
  breaki = Split( fcontent, " I " )
  '0 = 00000000 I 
  '1 = __imp__iupdrvWarpPointer
  '1 = __imp__wvsprintfW@12
  
  funcname      = ""
  functype      = ""
  funcextrn     = ""
  funcextrn1    = ""
  funcextrnjoin = ""
  
  If InStr( breaki(1), "@" ) Then
   breaka     = Split( breaki(1), "@" )
   funcextrn  = breaka(0)           ' __imp__wvsprintfW 
   funcextrn1 = breaka(1)           ' 12
  Else
   funcextrn = breaki(1)
  End If
  
  If InStr( funcextrn, "__imp__" ) Then
   breakimp = Split( funcextrn, "__imp__" )
   funcname = breakimp(1)
   ' funcname = iupdrvWarpPointer
   ' funcname = wvsprintfW
  End If
  
  functype = Right( funcname, 1 )    ' A or W or etc
  
  ' join those extrn
  If funcextrn1 = "" Then
   funcextrnjoin = funcextrn
  Else
   funcextrnjoin = funcextrn + "@" + funcextrn1
  End If
  
  If unicode = 1 Then
   If functype <> "A" Then
    WScript.Echo( "extrn '" + funcextrnjoin + "' as " + funcname + ":dword")
   End If
  Else
   If functype <> "W" Then
    WScript.Echo( "extrn '" + funcextrnjoin + "' as " + funcname + ":dword")
   End If
  End If
 End If
End Function

If ( WScript.Arguments.Count() = 2 ) Then
 unicode = 1
End If
nmcontent = ReadFile( WScript.Arguments.Item(0) )
nmarray   = Split( nmcontent, vbCrLf)

For i = 0 to UBound(nmarray)
 SplitSpaceISpace( nmarray(i) )
Next

[/code]

Labels: fasm, programming, vbscript

posted by Billionaire - 09:00 0 Comments

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