32bits or 64bits ?

[Sébastien N]

Hi,

How to know if a running program is built in a 32 or in a 64 bits mode (my JVM) ?

Thanx.

[Robert-Jan Goossens · Accepted solution]

Hi,

Use file,

/usr/local/bin# file lsof
lsof: ELF-64 executable object file - PA-RISC 2.0 (LP64)

Robert-Jan.

[twang]

A running program?? I think you can find out if the executable support 64bit by issuing:
# file

[Sébastien N]

Thanx, but it doesn't work :
file /jdk131/bin/java
/jdk131/bin/java: commands text

?

[Robert Gamble]

S???stien N,

If the 'file' command returns 'commands text', then it is a shell script (or config file) and not a compiled program. A shell script is readable, and you could determine if it it checks for 32 or 64 bit before running a(probable) binary.

Hope this helps!

[twang]

open the java file to find out which executable invoking:
for example, you should find a 'prog=$JAVA_HOME/bin/PA_RISC/${THREADS_TYPE}/${progname}' statement.
Try to check the $program

[Sébastien N]

You are right : java is a shell file.

So I tried :
file /jdk131/bin/PA_RISC2.0/native_threads/java

and the answer :
/jdk131/bin/PA_RISC2.0/native_threads/java: PA-RISC2.0 executable dynamically linked -not stripped

What does that mean (32 or 64bits) ?

[Stefan Farrelly]

PA-RISC 2.0 is only 32 bit binary.

To be 64bit it must say;

ELF-64 executable object file - PA-RISC 2.0 (LP64)

(ie. its got to say ELF-64 as well as PA-RISC 2.0)

[twang]

It is a 32-bit executable.

[Sébastien N]

Thanx everybody.

Do you know where download JDK 1.3.1 for HP-UX 11i (64bits) ?

[James R. Ferguson]

HI:

See here for JDK downloads:

http://www.hp.com/products1/unix/java/

Regards!

...JRF...

[Umapathy S]

Here it is
http://www.hp.com/products1/unix/java/java2/sdkrte1_3/index.html

HTH,
Umapathy

[Stefan Farrelly]

None of the HP SDK or RTE Java kits come with 64bit binaries for Java. I dont think HP do them for PA-RISC.

[Sébastien N]

64bits only available with SDK 1.4 :-(

Thanx.

[Stefan Farrelly]

Were running the latest Java SDK (1.4.1.03) and the java binaries are all compiled as PA-RISC 1.1 (32bit). There are no 64bit binaries for PA-RISC (not in /opt/java/1.4/bin).

[Mike Stroyan]

Stephan,

Look in /opt/java1.4/bin/PA_RISC2.0W/java and
/opt/java1.4/jre/bin/PA_RISC2.0W/java for the 64-bit executeables.