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Re: [PATCH 00/21] glibc port to ARC processors


On Tue, 18 Dec 2018, Vineet Gupta wrote:

> At any rate, the generated code will likely be different for -Os and otherwise,
> does that mean entries get added conditionally to localplt.data etc ?

Entries *can* have a "?" to indicate they are optional (although avoiding 
the PLT reference is better - see how include/string.h does asm 
redirection of mempcpy and stpcpy, or likewise in 
sysdeps/wordsize-32/divdi3-symbol-hacks.h, for example).

> ARC historically has supported both LE/BE, but we are kind of moving 
> away from BE and as far as I know, there's no-one actively working with 
> BE (except 1 specific customer with legact cores). It is safe to assume 
> we won't support BE and this is sort of easier said for ARC processors 
> as they have many many hardware config knobs and not all are supported 
> for Linux usecase, so BE can be considered as such.

In that case, there should be a #error in bits/endian.h, or a 
configure-time error, or something like that, to make clear the glibc port 
does not support BE.

-- 
Joseph S. Myers
joseph@codesourcery.com


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