[RFR] jdk9.0.4+12 + functionality

[Andrew Dinn]

On 16/04/18 23:58, Bob Vandette wrote:
> Is there a reason that the fully functioning 32-bit ARM port that already exists in JDK 9
> can’t be used as the basis for this work?  

Well, I guess the main one is that no one working on the AArch32 project
has any real knowledge of the 32-bit arm (qua, arm project) port.

However, another reason to not go that route is that the AArch32 port
was derived from the AArch64 port which was, in turn, derived from the
x86 port. Whatever the provenance of the (32- or 64-bit) arm code it
differs in significant ways from the x86 code.

I say that because, previously, when I have looked at patches which
update x86, sparc and arm with a view to adding the missing AArch64
code, I have *always* found that the patch required for AArch64 is much
closer in format to the x86 code (or even the sparc code) than it is to
the corresponding (64 bit) arm port code. I expect that the same will
apply to the AArch32 code. Your mileage (and, no doubt, your
understanding of the inner workings of the arm port) may vary.

regards,


Andrew Dinn
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