Support for 32-bit i386 ELF binaries

[rtiainen]

Currently it does not seem to be possible to execute 32-bit Linux ELF binaries in BashOnWindows environment. An attempt to execute an 32-bit ELF binary fails with the following error:

bash: ./program: cannot execute binary file: Exec format error

Adding i386 architecture to dpkg and installing i386 versions of relevant libraries (libc6, libncurses5, libstdc++6) does not help.

Generally this is not a big deal if the source of the program is available in a way or another, however, there is quite a lot of 32-bit proprietary tools that are distributed in binary-only form, and currently those are unusable within BashOnWindows.

[stehufntdev]

Thanks for trying out WSL! Currently WSL only supports amd64 (native 64bit), and this was brought up in #228 as well.

To get this on our priority list can you add it to our UserVoice?

[rtiainen]

Similar item is already on the UserVoice as follows:

https://wpdev.uservoice.com/forums/266908-command-prompt-console-bash-on-ubuntu-on-windo/suggestions/13377507-please-add-32-bit-elf-support-to-the-kernel

[Timvrakas]

Could we have the message returned when 32 bit binaries are run mention this limitation. Its not a big problem but I was a head scratcher for a bit.

[yuhong]

I wonder how they will deal with syscall/sysenter and the vDSO or will they just use int 80h?