> I'm suggesting that you set the condition codes based upon whether
> there is an error or not.
And the only way the syscall code could find out if there is an error is by
checking err < 0 && err >= -4096 like glibc (except for the compat
syscall on 64bit kernel case)
Or rewrite all code that returns errors to system calls to pass
a separate flag too.
> That is the critical thing x86 doesn't do
> that all the other platforms do.
It doesn't do it because it's useless without a kernel rewrite.
I frankly doubt it really works on Sparc :-) Maybe it could work
there on a hypothetical rewritten kernel, but not today.
-Andi
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