PPC-AIX Port to FreeBSD PowerPC Support

[Thomas Stüfe]

Hi Curtis,

I am not sure that AIX ppc would be the best source for an BSD port. AIX os
port contains a large number of AIX specifics and it is quite a bit
different (sometimes, needlessly) from the other Unices. It is also a
moving target, at least on jdk9, as we changed a lot in the AIX os port and
will change more until the next feature close.

So, it may be that linux ppc would be a better porting source for a bsd ppc
port.

Kind Regards, Thomas





On Mon, Jan 11, 2016 at 3:21 PM, Curtis Hamilton <hamiltcl at verizon.net>
wrote:

> Volker,
>
>
>
> Thanks for the response.
>
>
>
> Yes, I’m using the mercurial jdk7u ppc-aix version.  The reason I used
> this port version was because I was more familiar with the build layout of
> jdk7 versus jdk8/jdk9.  And it seemed like an easier target to start with,
> since it already supported ppc64 on AIX and Linux.
>
>
>
> Full disclosure, I’ve been successful in building zero vm for both jdk7
> and jdk8 on ppc64/FreeBSD.   They both work great.  The system performance
> is somewhat sluggish, but usable.  So I decided to see if I could build
> native ppc64 versions leveraging the existing AIX and Linux ppc64 support
> in the ppc-aix-port, since the bsd-port lacks support for PowerPC.
>
>
>
> I’m aware of the integration effort for jdk9.  So on your advice, I will
> start working with ppc-aix jdk8u.  I don’t want anyone to waste time with
> jdk7u. Although my efforts with this older version is not completely wasted.
>
>
>
> I look forward to contributing to the ppc64/bsd port OpenJDK integration
> effort.
>
>
>
> Regards,
>
> Curtis
>
>
>
> *From:* Volker Simonis [mailto:volker.simonis at gmail.com]
> *Sent:* Monday, January 11, 2016 5:22 AM
> *To:* Curtis Hamilton <hamiltcl at verizon.net>
> *Cc:* ppc-aix-port-dev at openjdk.java.net
> *Subject:* Re: PPC-AIX Port to FreeBSD PowerPC Support
>
>
>
> Hi Curtis,
>
> no, I'm not aware of any effort to port the ppc64 port to BSD.
>
> My first question is why are you building jdk7. It is quite old and we
> don't actually support it any more. It was also never integrated into the
> main jdk7u branch. I'd strongly recommend to use at least the jdk8u
> version. If you plan to contribute the ppc64/bsd port for integration into
> the OpenJDK, this has to be done into the head revision (currently jdk9)
> anyway. Once it's there, it may be possible to downport it to jdk8u (but
> not to jdk7u because that on doesn't even contain the ppc64 port).
>
> That said, which version of jdk7u are you using? Is it the one from
> http://hg.openjdk.java.net/ppc-aix-port/jdk7u/ ?
>
> One problem you may encounter with jdk7u is that it was never compiled
> with new versions of gcc. I see you are using gcc4.8 but we used 4.1.2 back
> then when we were doing the port.
>
> Another problem is that we didn't support the serviceability agent in
> jdk7u. Support for the SA agent on Linux/ppc64 (but not for AIX) was added
> in jdk8. The error you see in vmStructs.cpp is most probably from SA
> coding. How does your file vmStructs_bsd_ppc.hpp looks like. As you can
> see, vmStructs_linux_ppc.hpp is empty in jdk7u for the ppc64 port while it
> has some code in jdk8u-dev and jdk9.
>
> Unfortunately the place in vmStructs.cpp where the error happens is deeply
> nested macro coding so it's hard to say what's wrong from the error
> message. You could preprocess the file and post that to the list, maybe we
> can see more. Just issue the following command from a shell from within
> /usr/ports/tmp/jdk7u/build/bsd-ppc/hotspot/outputdir/bsd_ppc64_compiler2/product:
>
>  g++48 -DBSD -DPPC64 -D_ALLBSD_SOURCE -D_GNU_SOURCE -DPRODUCT
> -I/usr/ports/tmp/jdk7u/hotspot/src/share/vm/prims
> -I/usr/ports/tmp/jdk7u/hotspot/src/share/vm
> -I/usr/ports/tmp/jdk7u/hotspot/src/share/vm/precompiled
> -I/usr/ports/tmp/jdk7u/hotspot/src/cpu/ppc/vm
> -I/usr/ports/tmp/jdk7u/hotspot/src/os_cpu/bsd_ppc/vm
> -I/usr/ports/tmp/jdk7u/hotspot/src/os/bsd/vm
> -I/usr/ports/tmp/jdk7u/hotspot/src/os/posix/vm -I../generated
> -DHOTSPOT_RELEASE_VERSION="\"24.80-b11\""
> -DHOTSPOT_BUILD_TARGET="\"product\"" -DHOTSPOT_BUILD_USER="\"root\""
> -DHOTSPOT_LIB_ARCH=\"ppc\" -DHOTSPOT_VM_DISTRO="\"OpenJDK\""
> -DDEFAULT_LIBPATH="\"/lib:/usr/lib:/usr/local/lib\"" -DTARGET_OS_FAMILY_bsd
> -DTARGET_ARCH_ppc -DTARGET_ARCH_MODEL_ppc_64 -DTARGET_OS_ARCH_bsd_ppc
> -DTARGET_OS_ARCH_MODEL_bsd_ppc_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -fPIC
> -fno-rtti -fno-exceptions -pthread -fcheck-new -mpowerpc64 -pipe
> -DDONT_USE_PRECOMPILED_HEADER -O3 -fno-strict-aliasing -D_LP64=1 -m64
> -mminimal-toc -mcpu=powerpc64 -mtune=power5
> -minsert-sched-nops=regroup_exact -mno-multiple -mno-string
> -DSAFEFETCH_STUBS -DINCLUDE_TRACE=1 -Werror -Wpointer-arith -Wconversion
> -Wsign-compare    -E
> /usr/ports/tmp/jdk7u/hotspot/src/share/vm/runtime/vmStructs.cpp
>
> Regards,
>
> Volker
>
>
>
> On Sun, Jan 10, 2016 at 3:04 PM, Curtis Hamilton <hamiltcl at verizon.net>
> wrote:
>
> Hello,
>
> I’d like to know if there’s been any work done to support PPC for *BSD?
>
> I’ve hacked both the AIX and Linux PPC headers but have been unsuccessful
> in building HotSpot.  All modules seem to build with the exception of
> VMStructs.cpp with the below error.
>
> /usr/ports/tmp/jdk7u/hotspot/src/share/vm/runtime/vmStructs.cpp: In static
> member function 'static void VMStructs::init()':
> /usr/ports/tmp/jdk7u/hotspot/src/share/vm/runtime/vmStructs.cpp:3015:
> error: cannot convert 'pthread**' to 'pid_t*' in initialization
>
> Build log is attached.
>
> Thanks in advance!
>
>
>
> Curtis
>
>
>
>
>
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