如何:确定映像为本机映像还是 CLR 映像
要确定映像是否是针对公共语言运行时生成,一种方法是使用 dumpbin /CLRHEADER
命令。 有关详细信息,请参阅 /CLRHEADER
。
还可以以编程方式检查映像是否是针对公共语言运行时生成的。 有关详细信息,请参阅如何:检测 /clr 编译。
示例
以下示例确定映像是否是针对在公共语言运行时上运行而生成的。
// detect_image_type.cpp
// compile with: /clr
using namespace System;
using namespace System::IO;
enum class CompilationMode {Invalid, Native, CLR };
static CompilationMode IsManaged(String^ filename) {
try {
array<Byte>^ data = gcnew array<Byte>(4096);
FileInfo^ file = gcnew FileInfo(filename);
Stream^ fin = file->Open(FileMode::Open, FileAccess::Read);
Int32 iRead = fin->Read(data, 0, 4096);
fin->Close();
// Verify this is a executable/dll
if ((data[1] << 8 | data[0]) != 0x5a4d)
return CompilationMode::Invalid;
// This will get the address for the WinNT header
Int32 iWinNTHdr = data[63]<<24 | data[62]<<16 | data[61] << 8 | data[60];
// Verify this is an NT address
if ((data[iWinNTHdr+3] << 24 | data[iWinNTHdr+2] << 16 | data[iWinNTHdr+1] << 8 | data[iWinNTHdr]) != 0x00004550)
return CompilationMode::Invalid;
Int32 iLightningAddr = iWinNTHdr + 24 + 208;
Int32 iSum = 0;
Int32 iTop = iLightningAddr + 8;
for (int i = iLightningAddr; i < iTop; ++i)
iSum |= data[i];
if (iSum == 0)
return CompilationMode::Native;
else
return CompilationMode::CLR;
}
catch(Exception ^e) {
throw(e);
}
}
int main() {
array<String^>^ args = Environment::GetCommandLineArgs();
if (args->Length < 2) {
Console::WriteLine("USAGE : detect_clr <assembly_name>\n");
return -1;
}
Console::WriteLine("{0} is compiled {1}", args[1], IsManaged(args[1]));
}