Databases
StackOverflow2013
Postsdbo
POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
    primarykey
    data
    text
    <p>I need to detect whether a given .dll or .exe file is 32 bit or 64 bit</p> <p>At the moment I have only one solution: read the PE Header from the specified file and take the 'Machine' field from there.</p> <p>( Specification: <a href="http://download.microsoft.com/download/9/c/5/9c5b2167-8017-4bae-9fde-d599bac8184a/pecoff_v8.docx" rel="nofollow noreferrer">Microsoft Portable Executable and Common Object File Format Specification</a> (.docx file) at section "3.3. COFF File Header (Object and Image)" )</p> <p>This field can take up to about 20 values. Three of them are:</p> <pre><code>IMAGE_FILE_MACHINE_I386 ( == 32bit ) IMAGE_FILE_MACHINE_IA64 ( == 64bit ) IMAGE_FILE_MACHINE_AMD64 ( == 64bit ) </code></pre> <p>My questions:</p> <p>1) Is 'Machine' to bitness mapping correct or did I miss something? Are there any other caveats?</p> <p>2) Is there easier way to detect 32/64 bitness (probably some specific field in PE format I didn't notice or some special system function)?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMysticial
    1. USinazaruk
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
      1. This table or related slice is empty.
      1. VTUpMod
    1. COdup: http://stackoverflow.com/questions/971689/win32-api-to-tell-whether-a-given-binary-exe-or-dll-is-x86-x64-or-ia64/971715#971715
      singulars
      1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
      1. USShay Erlichmen
    2. COThat other question is asking about architecture, this one is asking about word size.
      singulars
      1. POHow to detect that a given PE file (exe or dll) is 64 bit or 32 bit
      1. USDraemon
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload