[PATCH/RFC] Enable java on sh64-linux

[Tom Tromey]

>>>>> ">" == Kaz Kojima <kkojima@rr.iij4u.or.jp> writes:

>> The appended patch is to enable java on sh64-*-linux-gnu target.
>> It only affects sh*-linux* targets anyway, and essentially affects
>> sh64-linux only.

This libjava configury bits look fine.  Someone else will have to
comment on the rest.

>> I've got the following results on libjava testsuite for mainline:

These are pretty bad...

>> FAIL: Array_3 execution - source compiled test
>> FAIL: Array_3 execution - gij test
>> FAIL: Array_3 execution - bytecode->native test
>> FAIL: Array_3 -O3 execution - source compiled test
>> FAIL: Array_3 execution - gij test
>> FAIL: Array_3 -O3 execution - bytecode->native test

This suggests that the SEGV -> NullPointerException code is not
working properly.  I see this port uses dwarf2-signal.h, so perhaps
MD_FALLBACK_FRAME_STATE_FOR isn't working properly?

>> FAIL: Divide_1 execution - gij test
>> FAIL: Divide_1 execution - gij test

... and perhaps you need -fuse-divide-subroutine?  This is also set
in configure.host.

The other test failures don't remind me immediately of problems,
though the pr83 test was recently discussed on the gcj list.

Tom