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SIZEOF and DUP

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Greenhorn:
Hi,

if I declare an array with DUP and SIZEOF as the length-expression POASM throws an error:
error: Expected 'identifier'.

For example:
myArray  BYTE  SIZEOF(someStruct)  DUP(0)

It would be a nice feature if POASM supports this. MASM does.


Regards
Greenhorn

Vortex:
Hi Greenhorn,

The code below works fine and eax returns 28h which is the correct result :


--- Code: ---.386
.model flat,stdcall
option casemap:none

BITMAPINFOHEADER STRUCT
  biSize            DWORD      ?
  biWidth           DWORD      ?
  biHeight          DWORD      ?
  biPlanes          WORD       ?
  biBitCount        WORD       ?
  biCompression     DWORD      ?
  biSizeImage       DWORD      ?
  biXPelsPerMeter   DWORD      ?
  biYPelsPerMeter   DWORD      ?
  biClrUsed         DWORD      ?
  biClrImportant    DWORD      ?
BITMAPINFOHEADER ENDS

ExitProcess PROTO :DWORD

includelib  \PellesC\lib\Win\kernel32.lib

.data

myArray BYTE SIZEOF(BITMAPINFOHEADER) dup(0)
x1      dd 10

.code

start:

    mov     eax,OFFSET x1 - OFFSET myArray   
    invoke  ExitProcess,0

END start
--- End code ---

Greenhorn:
Hi Vortex,

hm, that irritates me.

POASM complains about the Name_ member:


--- Code: ---IMAGE_AUX_SYMBOL_EX union
struct Sym
WeakDefaultSymIndex DWORD ? ;// the weak extern default symbol index
WeakSearchType DWORD ?
rgbReserved BYTE 12 dup (?)
ends
struct File
Name_ BYTE sizeof(IMAGE_SYMBOL_EX) dup (?)
ends
struct Section_
Length_ DWORD ? ;// section length
NumberOfRelocations WORD ? ;// number of relocation entries
NumberOfLinenumbers WORD ? ;// number of line numbers
CheckSum DWORD ? ;// checksum for communal
Number SWORD ? ;// section number to associate with
Selection BYTE ? ;// communal selection type
bReserved BYTE ?
HighNumber SWORD ? ;// high bits of the section number
rgbReserved BYTE 2 dup (?)
ends
struct
TokenDef IMAGE_AUX_SYMBOL_TOKEN_DEF <>
rgbReserved BYTE 2 dup (?)
ends
struct CRC
crc DWORD ?
rgbReserved BYTE 16 dup (?)
ends
IMAGE_AUX_SYMBOL_EX ends
PIMAGE_AUX_SYMBOL_EX typedef ptr IMAGE_AUX_SYMBOL_EX

--- End code ---

So what's wrong in this ?

EDIT:
And here is the IMAGE_SYMBOL_EX structure:


--- Code: ---IMAGE_SYMBOL_EX struct
union N
ShortName BYTE 8 dup (?)
struct Name_
Short_ DWORD ? ;// if 0, use LongName
Long DWORD ? ;// offset into string table
ends
LongName DWORD 2 dup (?) ;// PBYTE  [2]
ends
Value DWORD ?
SectionNumber SDWORD ?
Type_ WORD ?
StorageClass BYTE ?
NumberOfAuxSymbols BYTE ?
IMAGE_SYMBOL_EX ends
PIMAGE_SYMBOL_EX typedef ptr IMAGE_SYMBOL_EX

--- End code ---


Greenhorn

Vortex:
Hi Greenhorn,

If it's possible, could you post a code example simulating the issue?

Greenhorn:
Yes of course it is.  ;)

I've translated some header files of the Windows SDK 7.1 and these structures are defined in the winnt.inc.
So I think it makes only sense if you have all the files for a proper test.

With JWASM it seems they work fine, but now I want to make them compatible for POASM.

However, the compressed archive is a little bit too big to attach it to a post here.
I hope it is OK for you if I send you a link for download via PM ...

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