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073edbdfab
Needed since gcc-10 enabled -fno-common by default. [In use in Gentoo since gcc-10, no problems observed. Also discussed with and reviewed by Jessica Clarke from Debian. Andreas] Bug: https://bugs.gentoo.org/723268 Reviewed-by: Carlos O'Donell <carlos@redhat.com> Signed-off-by: Sergei Trofimovich <slyich@gmail.com> Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
53 lines
2 KiB
C
53 lines
2 KiB
C
/* System-specific settings for dynamic linker code. IA-64 version.
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Copyright (C) 2003-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LINUX_IA64_DL_SYSDEP_H
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#define _LINUX_IA64_DL_SYSDEP_H 1
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#include_next <dl-sysdep.h>
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/* Traditionally system calls have been made using break 0x100000. A
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second method was introduced which, if possible, will use the EPC
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instruction. To signal the presence and where to find the code the
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kernel passes an AT_SYSINFO_EHDR pointer in the auxiliary vector to
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the application. */
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#define NEED_DL_SYSINFO 1
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#define USE_DL_SYSINFO 1
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#ifndef __ASSEMBLER__
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/* Don't declare this as a function---we want it's entry-point, not
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it's function descriptor... */
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/* Use section ".text" to force far GPREL64 relocation instead of
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GPREL22. */
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extern int _dl_sysinfo_break attribute_hidden __attribute__((section(".text")));
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# define DL_SYSINFO_DEFAULT ((uintptr_t) &_dl_sysinfo_break)
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# define DL_SYSINFO_IMPLEMENTATION \
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asm (".text\n\t" \
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".hidden _dl_sysinfo_break\n\t" \
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".proc _dl_sysinfo_break\n\t" \
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"_dl_sysinfo_break:\n\t" \
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".prologue\n\t" \
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".altrp b6\n\t" \
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".body\n\t" \
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"break 0x100000;\n\t" \
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"br.ret.sptk.many b6;\n\t" \
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".endp _dl_sysinfo_break\n\t" \
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".previous");
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#endif
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#endif /* dl-sysdep.h */
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