Re: [patch] Bring QNX Neutrino support forward.

[Andrew Cagney <cagney@gnu.org>]

> Andrew Cagney wrote:
> 
>>> Some of this stuff is cosmetic/convenience.  I made the macros for my nto_target structure testable and moved the comments into the structure where they're more useful.
>>>
>>> A few things had to do with initializers.  Some of the signal handling stuff didn't work because other _init functions hadn't been called so I moved them out to where they could be called when the osabi is initialized.
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>> BTW, what was the race condition?
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> The _initialize_* functions were being called in a different order than previously so all my signal initialization stuff was breaking when I put it into my _init* funcs.  It was a while ago I changed it (haven't been working on FSF gdb recently) but I believe it was target_signal_from_name....

Ulgh, one of those (if you remember any more details :-).  I'll need to 
investigate - these race conditions are a royal pain.

>>> I added osabi and core sniffers.  Some is practical, some is future-proofing.  If we start supporting multiple targets, I'm going to want to be able to swap our various target processors support in and out.  The is_nto_target type stuff can be made more interesting later to do things like check to see if the remote host processor matches the binary abi and such.
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>> You should also be able to kill off regset_core_fns, it's been superseeded by regsets (which reminds me ....).
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> Must have not seen that thread.  I'll look into it.

There are no deprecated markers so there's no hint.  A grep of 
add_core_fns reveals that the i386/amd64 and GNU/Linux PPC do not make 
the call so I'm pretty sure that I'm not talking theory here (notably 
32x64 GNU/Linux debugging works on those systems -- that needs regsets).

Andrew