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>

3 files changed, 0 insertions, 28 deletions

diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
index 0a674c0..7dafa79 100644
--- a/sysdeps/generic/ldconfig.h
+++ b/sysdeps/generic/ldconfig.h
@@ -30,7 +30,6 @@
 #define FLAG_ELF_LIBC6			0x0003
 #define FLAG_REQUIRED_MASK		0xff00
 #define FLAG_SPARC_LIB64		0x0100
-#define FLAG_IA64_LIB64			0x0200
 #define FLAG_X8664_LIB64		0x0300
 #define FLAG_S390_LIB64			0x0400
 #define FLAG_POWERPC_LIB64		0x0500
diff --git a/sysdeps/generic/unwind-dw2.c b/sysdeps/generic/unwind-dw2.c
index 6c604ad..0808525 100644
--- a/sysdeps/generic/unwind-dw2.c
+++ b/sysdeps/generic/unwind-dw2.c
@@ -224,7 +224,6 @@ _Unwind_FindEnclosingFunction (void *pc)
     return NULL;
 }
 
-#ifndef __ia64__
 _Unwind_Ptr
 _Unwind_GetDataRelBase (struct _Unwind_Context *context)
 {
@@ -236,7 +235,6 @@ _Unwind_GetTextRelBase (struct _Unwind_Context *context)
 {
   return (_Unwind_Ptr) context->bases.tbase;
 }
-#endif
 
 /* Extract any interesting information from the CIE for the translation
    unit F belongs to.  Return a pointer to the byte after the augmentation,
diff --git a/sysdeps/generic/unwind.h b/sysdeps/generic/unwind.h
index 3013c18..e439ebe 100644
--- a/sysdeps/generic/unwind.h
+++ b/sysdeps/generic/unwind.h
@@ -33,11 +33,7 @@ extern "C" {
    inefficient for 32-bit and smaller machines.  */
 typedef unsigned _Unwind_Word __attribute__((__mode__(__unwind_word__)));
 typedef signed _Unwind_Sword __attribute__((__mode__(__unwind_word__)));
-#if defined(__ia64__) && defined(__hpux__)
-typedef unsigned _Unwind_Ptr __attribute__((__mode__(__word__)));
-#else
 typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
-#endif
 typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__)));
 
 /* @@@ The IA-64 ABI uses a 64-bit word to identify the producer and
@@ -190,29 +186,8 @@ extern void _Unwind_SjLj_Resume (struct _Unwind_Exception *);
    and data-relative addressing in the LDSA.  In order to stay link
    compatible with the standard ABI for IA-64, we inline these.  */
 
-#ifdef __ia64__
-#include <stdlib.h>
-
-static inline _Unwind_Ptr
-_Unwind_GetDataRelBase (struct _Unwind_Context *_C)
-{
-  /* The GP is stored in R1.  */
-  return _Unwind_GetGR (_C, 1);
-}
-
-static inline _Unwind_Ptr
-_Unwind_GetTextRelBase (struct _Unwind_Context *_C)
-{
-  abort ();
-  return 0;
-}
-
-/* @@@ Retrieve the Backing Store Pointer of the given context.  */
-extern _Unwind_Word _Unwind_GetBSP (struct _Unwind_Context *);
-#else
 extern _Unwind_Ptr _Unwind_GetDataRelBase (struct _Unwind_Context *);
 extern _Unwind_Ptr _Unwind_GetTextRelBase (struct _Unwind_Context *);
-#endif
 
 /* @@@ Given an address, return the entry point of the function that
    contains it.  */