uclibc-ng

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Debugging tweaks.

Oops.

Cleanup use of in6addr_loopback and in6addr_any

Patch from Yoshinori Sato to update the h8300 architecture.

Improve malloc debugging support.

Act more like the GNU version. Accept multiple args. Accept/ignore
the "--" option since we always do that anyways.
-Erik

Doh! Manuel noticed I'd put the CFLAGS before DODEBUG, killing
any chance of actually building with debug symbols.
-Erik

Rework usershell.c, as the old one was packed full of unhandled
failures, returned stack allocated memory, and misbehaved itself
in a number of other annoying ways,
-Erik

Kill SVR4_BUGCOMPAT

Patch from Stefan Allius:
- Invert all FORCE_SHAREABLE_TEXT_SEGMENTS checks.
- Define FORCE_SHAREABLE_TEXT_SEGMENTS in the Makefile,
so it can be configured by the config system.
- linuxelf.h inspects that we don't combine FORCE_SHAREABLE_TEXT_SEGMENTS
and SVR4_BUGCOMPAT
- Add a new config option for FORCE_SHAREABLE_TEXT_SEGMENTS

Patch from Aidan Van Dyk to make _toupper and _tolower
work properly, reverting my wrong reading of SuSv3

Update verbage regarding NIS

Remove use of $(strip) when no longer needed. Fixup DODEBUG
so when debugging is enabled we don't enable all the major
optimizations.
-Erik

Implement dynamic atexit handling. Adds a few bytes and a dependancy
on malloc (via realloc).
-Erik

Silence some whining

Aidan Van Dyk noticed that _toupper and _tolower were misbehaving.
This corrects them, per SuSv3.

Per suggestion from Stefan Allius, change DO_MPROTECT_HACKS to
the more clear FORCE_SHAREABLE_TEXT_SEGMENTS.

Stefan Allius writes:
I fixed two little bugs in ldso.c:
- For LDD support we test the old environment variable
LD_TRACE_LOADED_OBJECTS.
- Before we init the GOT table of the dynamic loader
we have to check, if we have a DT_PLTGOT entry.
If DT_PLTGOT was zero we patch somthing in the header
of the dynamic loader. This was the cause, why we have to
enable the DO_MPROTECT_HACKS option for all targets, to avoid
segment faults.

In readelflib1.c I added a warning, if we try to load a shared library, which
wasn't compiled with -fPIC or -fpic. So if we disable the DO_MPROTECT_HACKS
option we are sure, that we don't waste memory by shared libraries which
aren't able to share their text segment. I think this is a helpful option on
little embedded systems.

cut-n-paste typo

Update to sync up with glibc 2.3

For now, revert Ronald Wahl's change to dlopen. We need to
look into what is breaking dlclose() further...
-Erik

This draws from an old patch by David Blythe for the now-dead
unified syscall interface. I reworked his old patch considerably
and cleaned up his version of bits/syscalls.h with some sneaky macro
magic. And I implemented a powerpc correct version of pread/pwrite
-Erik

Cleanup a few structural wierdnesses

Stefan Allius writes:

I attached a patch, which revise the clone.S and vfork.S:
- Use PIC code.
- include new file syscall.S, so we can simply make a branch to
__syscall_error instead of a PLT/GOT call
- call errno_location to store the syscall error (for pthreads)
- avoid to use the 'shad' statement on SH2 targets
- call fork if vfork isn't available
- some cleanups and optimization

Remove obsolete files

Fix it for real this time.

Doh! I screwed that one all up. Lets try that again...
-Erik

Only build the 64 tests when relevant

Add in a pread/pwrite test

Patch from Luc Van Oostenryck to fix a buffer overflow
in getlogin_r