c# - 如何查找 native DLL 文件是编译为 x64 还是 x86？

Question

我想确定托管代码应用程序 ( C# ) 中的 native 程序集是编译为 x64 还是 x86。

我认为它一定在 PE header 中的某处，因为操作系统加载程序需要知道此信息，但我找不到它。当然，我更喜欢在托管代码中执行此操作，但如果有必要，我可以使用 native C++。

Answer 1

您可以使用 DUMPBIN也。使用 /headers 或 /all 标志及其列出的第一个文件头。

dumpbin /headers cv210.dll

64 位

Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file cv210.dll

PE signature found

File Type: DLL

FILE HEADER VALUES
            8664 machine (x64)
               6 number of sections
        4BBAB813 time date stamp Tue Apr 06 12:26:59 2010
               0 file pointer to symbol table
               0 number of symbols
              F0 size of optional header
            2022 characteristics
                   Executable
                   Application can handle large (>2GB) addresses
                   DLL

32 位

Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file acrdlg.dll

PE signature found

File Type: DLL

FILE HEADER VALUES
             14C machine (x86)
               5 number of sections
        467AFDD2 time date stamp Fri Jun 22 06:38:10 2007
               0 file pointer to symbol table
               0 number of symbols
              E0 size of optional header
            2306 characteristics
                   Executable
                   Line numbers stripped
                   32 bit word machine
                   Debug information stripped
                   DLL

“查找”可以让生活稍微轻松一些:

dumpbin /headers cv210.dll |find "machine"
        8664 machine (x64)