Hi again,

Ok I think I've found my mistake - the rc type wasnt large enough to 
hold 64bit of data.
ffi_arg seems to be 32bit on 32bit systems.. should have known, I fixed 
my code accordingly.

I also fixed my bug regarding custom struct handling, it works now on 
multiple arch's (i386, amd64, parisc, arm). :)

However, feel free to pass along helpful advice regarding my testing 
code and/or regarding porting libffi to parisc64.

Am 13.04.19 um 20:26 schrieb Georg Bege:
> Hello guys,
> 
> Im recently tinkering with PARISC machines which I've left.
> I've got two of them, one with HPUX 11iv1 (old, I know) and one with Linux.
> 
> According to the libffi main page, HPPA is indeed supported (not on 
> Linux, but this is outdated?).
> I've written a simple test code, in order to sanity check libffi's basic 
> functionality.
> 
> This code is working fine on i386 and amd64.. just for reference.
> My main goal is getting libffi working (eg. ported) to HPUX LP64... I've 
> began consulting the proper documents from HP and learning a bit of 
> PARISC asm.. but Im still at the beginning.
> 
> Right now, I wanted to confirm the functionality which is obviously 
> existing...
> The first try I've given is on the C8k with Gentoo Linux:
> 
> Linux hppa 4.9.49-gentoo-r1-hppa64 #4 SMP Fri Jun 8 19:33:13 CEST 2018 
> parisc64 PA8900 (Shortfin) 9000/785/C8000 GNU/Linux
> 
> therion@hppa ~ $ qlist -Iv libffi
> dev-libs/libffi-3.2.1
> virtual/libffi-3.0.13-r1
> 
> So far so good... I've this installation now for a while...
> The thing is that my test code is failing with 64bit signed integers.
> 
> Im hoping that any of you may look into it, or can lend me a hand - was 
> this ever supposed to work? Is it actually working?
> My test code is buggy? If so which part? :)
> 
> Since it's just test I'll attach my code here.
> 
> Output:
> ---------------snip--------------------
> therion@hppa ~ $ ./test-ffi
> Signed 8bit integer result:    126
> Unsigned 8bit integer result:    254
> Signed 16bit integer result:    32766
> Unsigned 16bit integer result:    65534
> Signed 32bit integer result:    2147483646
> Unsigned 32bit integer result:    4294967294
> Signed 64bit integer result:    0, expected: 2147483646
> test-ffi: test-ffi.c:151: main: Assertion `*src == result' failed.
> Aborted
> ---------------snip--------------------
> 
> best regards,

-- 
Georg Bege
Mail: georg@bege.email
XMPP: therion@ninth-art.de
IRC: megaTherion @ Freenode