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, 112 deletions

diff --git a/sysdeps/ia64/start.S b/sysdeps/ia64/start.S
deleted file mode 100644
index 7ab56cc..0000000
--- a/sysdeps/ia64/start.S
+++ /dev/null
@@ -1,112 +0,0 @@
-/* Copyright (C) 1999-2024 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.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   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 <sysdep.h>
-
-#include <asm/fpu.h>
-
-/*
- * Arguments for __libc_start_main:
- *	out0:	main
- *	out1:	argc
- *	out2:	argv
- *	out3:	init
- *	out4:	fini
- *	out5:	rtld_fini
- *	out6:	stack_end
- */
-
-	.align 32
-	.global _start
-
-	.proc _start
-	.type _start,@function
-_start:
-	.prologue
-	.save rp, r0
-	.body
-	.prologue
-	{ .mlx
-	  alloc r2 = ar.pfs,0,0,7,0
-	  movl r3 = FPSR_DEFAULT
-	}
-	{ .mlx
-	  adds out2 = 16, sp	/* get address of argc value */
-	  movl gp = @gprel(0f)
-	  ;;
-	}
-0:	{ .mmi
-	  ld8 out1 = [out2], 8	/* load argc and move out2 to become argv */
-	  mov.m r10 = ar.bsp	/* fetch rbs base address */
-	  mov r9 = ip
-	  ;;
-	}
-	{ .mii
-	  mov ar.fpsr = r3
-	  sub gp = r9, gp	/* back-compute gp value */
-	  adds out6 = 16, sp	/* highest non-environment stack address */
-	  ;;
-	}
-	{
-	  addl r11 = @ltoff(__libc_ia64_register_backing_store_base), gp
-	  addl out0 = @ltoff(@fptr(main)), gp
-	  mov out3 = r0		/* Used to be init.  */
-	  ;;
-	}
-	{ .mmi
-	  ld8 r3 = [r11]	/* pointer to __libc_ia64_register_backing_store_base */
-	  ld8 out0 = [out0]	/* pointer to `main' function descriptor */
-	  mov out4 = r0		/* Used to be fini.  */
-	  ;;
-	}
-	.body
-	{ .mib
-	  st8 [r3] = r10
-	  mov out5 = ret0	/* dynamic linker destructor */
-	  br.call.sptk.few rp = __libc_start_main
-	}
-	{ .mib
-	  break 0	/* break miserably if we ever return */
-	}
-	.endp _start
-
-/* Define a symbol for the first piece of initialized data.  */
-	.data
-	.globl __data_start
-__data_start:
-	.long 0
-	.weak data_start
-	data_start = __data_start
-
-	.common __libc_ia64_register_backing_store_base, 8, 8