Re: [RFC] final time64 switch-over patch series

[Rich Felker <dalias@libc.org>]

On Fri, Aug 02, 2019 at 05:44:33PM -0400, Rich Felker wrote:
> >From 3c6bde03ecf2aa7dac605f0a55a1be201f3d4c5f Mon Sep 17 00:00:00 2001
> From: Rich Felker <dalias@aerifal.cx>
> Date: Fri, 2 Aug 2019 15:41:27 -0400
> Subject: [PATCH 5/5] [RFC] [POC] switch i386 to 64-bit time_t
> 
> this is a proof of concept for converting one 32-bit arch, i386, to
> 64-bit time_t. known issues:
> 
> 1. the switchover of timespec padding is a hack, and needs to be done
> right, but that involves making alltypes.h aware of endianness, which
> probably should have been done a long time ago anyway and would get
> rid of inappropriate inclusion of <endian.h> in some places.
> 
> 2. the rusage, utmpx, and timex structs are not correct with regard to
> ABI or functionality. they need to be fixed before this is safe to
> use.
> 
> 3. Makefile change should be its own thing.
> 
> there are likely a lot more problems.

Add a significant incomplete prerequisite I forgot about: dlsym. There
needs to be a redirection for dlsym, and 32-bit archs need a second
asm entry point for __dlsym_time64 which first checks the symbol name
against the list of time64 redirections and rewrites the request if
it's a match.

Rich