Cross compile jdk8u on PPC32

[Tiago Daitx]

Radu,

Please check if this patch from Debian/Ubuntu fix your issue:
http://bazaar.launchpad.net/~openjdk/openjdk/openjdk8/view/head:/debian/patches/hotspot-powerpcspe.diff

You might also need this one:
http://bazaar.launchpad.net/~openjdk/openjdk/openjdk8/view/head:/debian/patches/zero-missing-headers.diff

I know that zero is buildable in PPC32 since we did it for Ubuntu and
do it for Debian, but I'm not sure this is all you need.

Regards,
Tiago


On Wed, Nov 1, 2017 at 3:27 PM, Radu Andritoiu <raduandritoiu at gmail.com> wrote:
> Hello,
>
> I still have one error that I can not fix in order to compile the "zero"
> jvm-variant for PPC32:
> - the error:
>
> Compiling /home/build/jdk8u/hotspot/src/share/vm/runtime/atomic.cpp
> /home/build/jdk8u/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp: In
> static member function 'static jlong Atomic::add(jlong, volatile jlong*)':
> /home/build/jdk8u/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp:44:
> error: impossible constraint in 'asm'
> /home/build/jdk8u/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp:44:
> error: impossible constraint in 'asm'
> gmake[6]: *** [atomic.o] Error 1
>
> - the code from the file
> /home/build/jdk8u/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp  where
> I get the error is:
>
>   // Atomically copy 64 bits of data
>   static void atomic_copy64(volatile void *src, volatile void *dst) {
> #if defined(PPC32)
>     double tmp;
>     asm volatile ("lfd  %0, 0(%1)\n"
>                   "stfd %0, 0(%2)\n"
>                   : "=f"(tmp)
>                   : "b"(src), "b"(dst));
> #elif defined(S390) && !defined(_LP64)
>     double tmp;
>     asm volatile ("ld  %0, 0(%1)\n"
>                   "std %0, 0(%2)\n"
>                   : "=r"(tmp)
>                   : "a"(src), "a"(dst));
> #else
>     *(jlong *) dst = *(jlong *) src;
> #endif
>   }
>
> - line 44 is this one:
>
>                   : "b"(src), "b"(dst));
>
>
>
> Thank you,
> Radu
>
>
>
> On Tue, Oct 24, 2017 at 3:34 PM, Bob Vandette <bob.vandette at oracle.com>
> wrote:
>
>> As others have mentioned, you need to target ZERO and not PPC32 when
>> trying to build
>> a non supported cpu architecture with the Zero interpreter.
>>
>> You do need to have a libffi.so binary available for the build.  Zero uses
>> this to manage the
>> native stack frames.
>>
>> Bob.
>>
>>
>> > On Oct 24, 2017, at 4:46 AM, Andrew Haley <aph at redhat.com> wrote:
>> >
>> > On 18/10/17 13:20, Radu Andritoiu wrote:
>> >> I am trying to compile jdk8u using jvm-variant "zero" and it asks for
>> >> 'libffi'.
>> >> I read that it uses 'libffi' for JNA to bridge between the interpreter
>> and
>> >> native code. It does not use JNI.
>> >
>> > That's wrong.  Zero supports JNI just fine.
>> >
>> > --
>> > Andrew Haley
>> > Java Platform Lead Engineer
>> > Red Hat UK Ltd. <https://www.redhat.com>
>> > EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
>>
>>
>
> On Tue, Oct 24, 2017 at 3:34 PM, Bob Vandette <bob.vandette at oracle.com>
> wrote:
>
>> As others have mentioned, you need to target ZERO and not PPC32 when
>> trying to build
>> a non supported cpu architecture with the Zero interpreter.
>>
>> You do need to have a libffi.so binary available for the build.  Zero uses
>> this to manage the
>> native stack frames.
>>
>> Bob.
>>
>>
>> > On Oct 24, 2017, at 4:46 AM, Andrew Haley <aph at redhat.com> wrote:
>> >
>> > On 18/10/17 13:20, Radu Andritoiu wrote:
>> >> I am trying to compile jdk8u using jvm-variant "zero" and it asks for
>> >> 'libffi'.
>> >> I read that it uses 'libffi' for JNA to bridge between the interpreter
>> and
>> >> native code. It does not use JNI.
>> >
>> > That's wrong.  Zero supports JNI just fine.
>> >
>> > --
>> > Andrew Haley
>> > Java Platform Lead Engineer
>> > Red Hat UK Ltd. <https://www.redhat.com>
>> > EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
>>
>>



-- 
Tiago Stürmer Daitx
Software Engineer
tiago.daitx at canonical.com

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