From ae49f218daca0b7cab27764da4081e6509bc7345 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Tue, 28 Dec 2021 10:27:06 +0100 Subject: hurd: Fix static-PIE startup hurd initialization stages use RUN_HOOK to run various initialization functions. That is however using absolute addresses which need to be relocated, which is done later by csu. We can however easily make the linker compute relative addresses which thus don't need a relocation. The new SET_RELHOOK and RUN_RELHOOK macros implement this. --- sysdeps/x86_64/set-hooks-arch.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 sysdeps/x86_64/set-hooks-arch.h (limited to 'sysdeps/x86_64') diff --git a/sysdeps/x86_64/set-hooks-arch.h b/sysdeps/x86_64/set-hooks-arch.h new file mode 100644 index 0000000000..227d4f8e08 --- /dev/null +++ b/sysdeps/x86_64/set-hooks-arch.h @@ -0,0 +1,28 @@ +/* Machine-dependent macros for using symbol sets for running lists of + functions. x86-64 version. + Copyright (C) 2021 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 + . */ + +#ifndef _SET_HOOKS_ARCH_H +#define _SET_HOOKS_ARCH_H + +#define SET_RELHOOK(NAME, HOOK) \ + asm(".section " #NAME",\"aR\"\n" \ + ".quad "#HOOK" - .\n" \ + ".section .text"); + +#endif /* set_hooks_arch.h */ -- cgit v1.2.3