Request for reviews (S): 6834177: Running jsynprog on Solaris Nevada can cause JVM crash

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/6834177/webrev.00

Fixed 6834177: Running jsynprog on Solaris Nevada can cause JVM crash

Problem:
The code which generates a native call wrapper and a dtrace nmethod
uses VM's static buffer AdapterHandlerLibrary::_buffer for the code
generation before moving it into CodeCache.
During the code generation in the static buffer a runtime call distance
is < 32 bits and the short form of a call instruction is generated.
It may cause problem for 64-bit VM when the relative call distance
to runtime from these methods may not fit into 32-bit if address
distance between CodeCache and VM's code > 32 bits.

Solution:
Use CodeCache buffer blob for the native wrapper and dtrace nmethod
code generation. Also throw an exception in dtrace runtime if nmethod
was not generated.

Note: it is ok to use the static buffer for i2c and c2i adapters since
they don't have calls to runtime.

Reviewed by:

Fix verified (y/n): y, bugs case

Other testing:
JPRT