关于IMAGE_OPTIONAL_HEADER32和64结构体的区别

关于 结构体IMAGE_OPTIONAL_HEADER64 和 结构体IMAGE_OPTIONAL_HEADER32 的对比

1.64位的结构体不存在字段 BaseOfData ，少了4个字节
2. 64位的结构体 下面五个字段的类型为 ULONGLONG  8个字节，比32版本的同字段名多了4个字节          
ULONGLONG             ImageBase;
ULONGLONG           SizeOfStackReserve;
ULONGLONG           SizeOfStackCommit;
ULONGLONG           SizeOfHeapReserve;
ULONGLONG           SizeOfHeapCommit;

所以总的来说，
64位的IMAGE_OPTIONAL_HEADER的长度为F0,32位的长度为E0,
64位的IMAGE_OPTIONAL_HEADER 比 32位 多了 16个字节,由来就是上面的  4*5 -4 = 16

https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-image_optional_header64
IMAGE_OPTIONAL_HEADER64 结构体
typedef struct _IMAGE_OPTIONAL_HEADER64 {
  WORD                 Magic;
  BYTE                 MajorLinkerVersion;
  BYTE                 MinorLinkerVersion;
  DWORD                SizeOfCode;
  DWORD                SizeOfInitializedData;
  DWORD                SizeOfUninitializedData;
  DWORD                AddressOfEntryPoint;
  DWORD                BaseOfCode;
  ULONGLONG            ImageBase;
  DWORD                SectionAlignment;
  DWORD                FileAlignment;
  WORD                 MajorOperatingSystemVersion;
  WORD                 MinorOperatingSystemVersion;
  WORD                 MajorImageVersion;
  WORD                 MinorImageVersion;
  WORD                 MajorSubsystemVersion;
  WORD                 MinorSubsystemVersion;
  DWORD                Win32VersionValue;
  DWORD                SizeOfImage;
  DWORD                SizeOfHeaders;
  DWORD                CheckSum;
  WORD                 Subsystem;
  WORD                 DllCharacteristics;
  ULONGLONG            SizeOfStackReserve;
  ULONGLONG            SizeOfStackCommit;
  ULONGLONG            SizeOfHeapReserve;
  ULONGLONG            SizeOfHeapCommit;
  DWORD                LoaderFlags;
  DWORD                NumberOfRvaAndSizes;
  IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
} IMAGE_OPTIONAL_HEADER64, *PIMAGE_OPTIONAL_HEADER64;

https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-image_optional_header32
IMAGE_OPTIONAL_HEADER64 结构体

typedef struct _IMAGE_OPTIONAL_HEADER {
  WORD                 Magic;
  BYTE                 MajorLinkerVersion;
  BYTE                 MinorLinkerVersion;
  DWORD                SizeOfCode;
  DWORD                SizeOfInitializedData;
  DWORD                SizeOfUninitializedData;
  DWORD                AddressOfEntryPoint;
  DWORD                BaseOfCode;
  DWORD                BaseOfData;
  DWORD                ImageBase;
  DWORD                SectionAlignment;
  DWORD                FileAlignment;
  WORD                 MajorOperatingSystemVersion;
  WORD                 MinorOperatingSystemVersion;
  WORD                 MajorImageVersion;
  WORD                 MinorImageVersion;
  WORD                 MajorSubsystemVersion;
  WORD                 MinorSubsystemVersion;
  DWORD                Win32VersionValue;
  DWORD                SizeOfImage;
  DWORD                SizeOfHeaders;
  DWORD                CheckSum;
  WORD                 Subsystem;
  WORD                 DllCharacteristics;
  DWORD                SizeOfStackReserve;
  DWORD                SizeOfStackCommit;
  DWORD                SizeOfHeapReserve;
  DWORD                SizeOfHeapCommit;
  DWORD                LoaderFlags;
  DWORD                NumberOfRvaAndSizes;
  IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
} IMAGE_OPTIONAL_HEADER32, *PIMAGE_OPTIONAL_HEADER32;