Remove ia64-linux-gnu

Linux 6.7 removed ia64 from the official tree [1], following the general
principle that a glibc port needs upstream support for the architecture
in all the components it depends on (binutils, GCC, and the Linux
kernel).

Apart from the removal of sysdeps/ia64 and sysdeps/unix/sysv/linux/ia64,
there are updates to various comments referencing ia64 for which removal
of those references seemed appropriate. The configuration is removed
from README and build-many-glibcs.py.

The CONTRIBUTED-BY, elf/elf.h, manual/contrib.texi (the porting
mention), *.po files, config.guess, and longlong.h are not changed.

For Linux it allows cleanup some clone2 support on multiple files.

The following bug can be closed as WONTFIX: BZ 22634 [2], BZ 14250 [3],
BZ 21634 [4], BZ 10163 [5], BZ 16401 [6], and BZ 11585 [7].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ff221426d33db909f7159fdf620c3b052e2d1c
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=22634
[3] https://sourceware.org/bugzilla/show_bug.cgi?id=14250
[4] https://sourceware.org/bugzilla/show_bug.cgi?id=21634
[5] https://sourceware.org/bugzilla/show_bug.cgi?id=10163
[6] https://sourceware.org/bugzilla/show_bug.cgi?id=16401
[7] https://sourceware.org/bugzilla/show_bug.cgi?id=11585
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 42 deletions

diff --git a/sysdeps/ia64/jmpbuf-unwind.h b/sysdeps/ia64/jmpbuf-unwind.h
deleted file mode 100644
index 9f93361d53..0000000000
--- a/sysdeps/ia64/jmpbuf-unwind.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* Copyright (C) 2003-2024 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <setjmp.h>
-#include <stdint.h>
-#include <unwind.h>
-
-/* Test if longjmp to JMPBUF would unwind the frame containing a local
-   variable at ADDRESS.  */
-#define _JMPBUF_UNWINDS(_jmpbuf, _address, _demangle) \
-  ((void *) (_address) < (void *) (((long int *) _jmpbuf)[0]))
-
-#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
-  ({ uintptr_t _cfa = (uintptr_t) _Unwind_GetCFA (_context) - (_adj);	\
-     (_cfa < (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj)		\
-      || (_cfa == (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj)		\
-	  && (uintptr_t) _Unwind_GetBSP (_context) - (_adj)		\
-	     >= (uintptr_t)(((long *)(_jmpbuf))[17]) - (_adj)));	\
-  })
-
-#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
-  ((uintptr_t)(_address) - (_adj) < (uintptr_t)(((long *)_jmpbuf)[0]) - (_adj))
-
-/* We use a longjmp() which can cross from the alternate signal-stack
-   to the normal stack.  */
-extern void __libc_unwind_longjmp (sigjmp_buf env, int val)
-          __attribute__ ((noreturn));
-hidden_proto (__libc_unwind_longjmp)