Creating a QEmu (x86-64) Image, which can execute binary applications from other x86-64 linux OSes


Christian Lohr <christian.lohr.ext@...>
 

Hello,

 

I’m trying to create a normal QEmu (x86-64) Image, which I can let run in Virtualbox. As a addition I deployed .NET Core, which I got from this side:

https://dotnet.microsoft.com/download/dotnet-core/thank-you/runtime-aspnetcore-3.1.1-linux-x64-binaries

 

But I can’t execute it:

----------------------------

root@qemux86-64:/usr/share/dotnet# ./dotnet

-sh: ./dotnet: No such file or directory

 

 

But it is there:

------------------

root@qemux86-64:/usr/share/dotnet# ls -lh

total 116K

-rw-r--r-- 1 root root 1.1K Feb 10 02:33 LICENSE.txt

-rw-r--r-- 1 root root  31K Feb 10 02:33 ThirdPartyNotices.txt

-rwxr-xr-x 1 root root  72K Feb 10 02:33 dotnet

drwxr-xr-x 3 root root 4.0K Feb 10 02:36 host

drwxr-xr-x 4 root root 4.0K Feb 10 02:36 shared

 

 

It tried to get more information about the dotnet-executable

------------------------------------------------------------------------------

root@qemux86-64:/usr/share/dotnet# readelf -h dotnet

ELF Header:

  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00

  Class:                             ELF64

  Data:                              2's complement, little endian

  Version:                           1 (current)

  OS/ABI:                            UNIX - System V

  ABI Version:                       0

  Type:                              EXEC (Executable file)

  Machine:                           Advanced Micro Devices X86-64

  Version:                           0x1

  Entry point address:               0x402f17

  Start of program headers:          64 (bytes into file)

  Start of section headers:          71032 (bytes into file)

  Flags:                             0x0

  Size of this header:               64 (bytes)

  Size of program headers:           56 (bytes)

  Number of program headers:         10

  Size of section headers:           64 (bytes)

  Number of section headers:         31

  Section header string table index: 30

 

root@qemux86-64:/usr/share/dotnet#  file dotnet

dotnet: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=28c244c1953bcbee994709a4b849086ee7cf0c99, stripped

 

 

I compared those values with that from Python, which does run on this system

-------------------------------------------------------------------------------------------------------

root@qemux86-64:/opt/jre-8/bin# readelf -h /usr/bin/python3.7

ELF Header:

  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00

  Class:                             ELF64

  Data:                              2's complement, little endian

  Version:                           1 (current)

  OS/ABI:                            UNIX - System V

  ABI Version:                       0

  Type:                              DYN (Shared object file)

  Machine:                           Advanced Micro Devices X86-64

  Version:                           0x1

  Entry point address:               0x1060

  Start of program headers:          64 (bytes into file)

  Start of section headers:          12568 (bytes into file)

  Flags:                             0x0

  Size of this header:               64 (bytes)

  Size of program headers:           56 (bytes)

  Number of program headers:         11

  Size of section headers:           64 (bytes)

  Number of section headers:         27

  Section header string table index: 26

 

root@qemux86-64:/usr/share/dotnet# file /usr/bin/python3.7

/usr/bin/python3.7: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-x86-64.so.2, BuildID[sha1]=a455873f278466378405802b0e0171337e52a81c, for GNU/Linux 3.2.0, stripped

 

================================================================================

 

The only difference I found, is that Python is a “ELF 64-bit LSB pie executable” whereas dotnet is a “ELF 64-bit LSB executable”. I tried to turn that PIE (seemed to be a gcc option: --enable-default-pie) feature of, but that didn’t work well, and I couldn’t find a way to remove it.

 

 

----

 

Best regards,

 

Christian Lohr

Im Auftrag von:

Carl Zeiss Meditec AG
Göschwitzer Strasse 51-52

07745 Jena, Deutschland

christian.lohr.ext@...

Tel: +493641220206

 

 

 

Join yocto@lists.yoctoproject.org to automatically receive all group messages.