Re: is it possible to call 32 bit shared libraries on 64bit os platforms?

From:
Joshua Cranmer <Pidgeot18@verizon.invalid>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 22 Apr 2010 13:52:03 -0400
Message-ID:
<hqq2c3$t0e$1@news-int2.gatech.edu>
On 04/22/2010 11:01 AM, cr88192 wrote:

"EJP"<esmond.not.pitt@not.bigpond.com> wrote in message
news:bLVzn.20720$pv.9107@news-server.bigpond.net.au...

On 22/04/2010 6:10 PM, junyoung wrote:

libadscli.so: wrong ELF class: ELFCLASS32 (Possible cause:
architecture word width mismatch)


Bit of a giveaway, don't you think?


yeah, it is not likely possible apart from using some kind of emulator (say,
an x86 emulator with JNI support).


It could be possible, I think, if you really specialized the library
loading feature to do stub libraries and a lot of appropriate trampolining.

Far easier would be spawning a 32-bit process that can load the library
and then RPC'ing stuff between the two. Still not fun, though.

easier would be, if possible, to compile/request/... 64-bit libraries (as
well as libs for whatever other arch it may need to run on), and use these
in addition to the 32-bit libs.


Or use multilib stuff (ugh)!

--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth

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