jdk9 builds status

[Alex Kashchenko]

Hi,

I found that jdk9 in http://hg.openjdk.java.net/aarch32-port/jdk9/ is 
broken after the "pre C1" commit due to this discrepancy:

  - jdk8u: 
http://hg.openjdk.java.net/aarch32-port/jdk8u/hotspot/rev/b3e996878ddf#l35.6
  - jdk9: 
http://hg.openjdk.java.net/aarch32-port/jdk9/hotspot/rev/52d292d5c12f#l35.7

"fp" register is zero at that point and vm crashes on startup.

With the following change:

  address os::current_stack_pointer()  {
-  register void* fp __asm__ (SPELL_REG_FP);
+  register void* sp __asm__ (SPELL_REG_SP);
    // Only lr on top of fp
-  return (address) fp + BytesPerWord;
+  return (address) sp;
  }

jdk9 works and can bootstrap itself - I've built slowdebug jdk9 using a 
fastdebug one as a boot jdk.

This is just a "heads up" - I am not proposing to integrate this change, 
as it differs from jdk8u and initial change in that place (linked above) 
probably has been done for the reason.

PS: additional question on aarch32-jdk9 plans: as upstream jdk9 is 
feature complete now, does it make sense to update aarch32-jdk9 forest 
from it or is it better to wait for some point closer to jdk9 release?

-- 
-Alex