Mobile JDK 9 Status

[Ali Ebrahimi]

Hi Bob,
Your both workaround works for Hello world app!, but what is actual fix?

On Thu, Jan 21, 2016 at 6:46 PM, Bob Vandette <bob.vandette at oracle.com>
wrote:

> Without seeing a stack trace, I can’t tell for sure but when the VM is
> initializing it
> forces a SEGV in order to verify that the signal handler is
> saving/restoring the
> high bits of the XMM/YMM registers.
>
> If you execute this lldb command, it will allow the SEGV to be passed to
> the VM.
>
> process handle -s false SIGSEGV
> process handle -s false SIGBUS
>
> If you don’t want do this, you can try to remove the
> SEGV with this change.  I haven’t tested this but we
> have something similar in our JDK8 sources.
>
>
> --- a/src/cpu/x86/vm/vm_version_x86.cpp
> +++ b/src/cpu/x86/vm/vm_version_x86.cpp
> @@ -396,10 +396,12 @@
>      VM_Version::clean_cpuFeatures();
>
>      __ bind(save_restore_except);
> +#if !TARGET_OS_IPHONE
>      __ xorl(rsi, rsi);
>      VM_Version::set_cpuinfo_segv_addr(__ pc());
>      // Generate SEGV
>      __ movl(rax, Address(rsi, 0));
> +#endif
>
>      VM_Version::set_cpuinfo_cont_addr(__ pc());
>
> This only fixes SEGVs forced at startup.
>
> You are going to have to allow SEGVs to be passed to the
> VM at some point because it’s used for other purposes such
> as NULL Pointer checking and getting the VM to a safepoint.
>
> Bob.
>
>
>
> > On Jan 21, 2016, at 9:04 AM, Ali Ebrahimi <ali.ebrahimi1781 at gmail.com>
> wrote:
> >
> > Hi,
> > I followed your instructions and built jdk but I got following error
> when using result in xcode:
> > "building for ios simulator, but linking in object file built for osx,
> for architecture"
> >
> > I fix this by adding line for your bash script iOS x86_64:
> > export ASFLAGS='-miphoneos-version-min=8.0'
> >
> > Now I successfully build mobile-jdk.
> >
> > Now when I trying to start java VM from object-c code I get: "signal
> sigsegv"
> > What is wrong here?
> >
> > I use mac os 10.11 and xcode 7.2
> >
> >
> > On Thu, Jan 21, 2016 at 12:08 AM, Bob Vandette <bob.vandette at oracle.com>
> wrote:
> > Here are a few updates on the Mobile Dev Repository (
> http://hg.openjdk.java.net/mobile/dev <
> http://hg.openjdk.java.net/mobile/dev>)
> >
> > The mobile/dev forest was merged a few weeks ago with
> http://hg.openjdk.java.net/jdk9/dev/ <http://hg.openjdk.java.net/jdk9/dev/>
> as of build 98.
> >
> > The Mobile Dev forest is now capable of building both iOS ARM64 and
> x86_64.
> >
> > I’ve updated the iOS build instructions to include building the libffi
> and libfreetype libraries
> > as well as a canned set of JDK 9 iOS build instructions to make it
> easier for developers to
> > get started.
> >
> > http://openjdk.java.net/projects/mobile/ios.html <
> http://openjdk.java.net/projects/mobile/ios.html>
> >
> > I’ll be working on completing the Android ARM builds and providing more
> the Android build instructions next.
> >
> > Enjoy,
> > Bob
> >
> >
> >
> >
> >
> > --
> >
> > Best Regards,
> > Ali Ebrahimi
>
>


-- 

Best Regards,
Ali Ebrahimi