SET_RELHOOK: merge i386 and x86_64, and move to sysdeps/mach/hurd/x86

It is not Hurd-specific, but H.J. Lu wants it there.

Also, dc.a can be used to avoid hardcoding .long vs .quad and thus use
the same implementation for i386 and x86_64.

1 files changed, 28 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/x86/set-hooks-arch.h b/sysdeps/mach/hurd/x86/set-hooks-arch.h
new file mode 100644
index 0000000..863aa76
--- /dev/null
+++ b/sysdeps/mach/hurd/x86/set-hooks-arch.h
@@ -0,0 +1,28 @@
+/* Machine-dependent macros for using symbol sets for running lists of
+   functions. x86 version.
+   Copyright (C) 2021-2022 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/>.  */
+
+#ifndef _SET_HOOKS_ARCH_H
+#define _SET_HOOKS_ARCH_H
+
+#define SET_RELHOOK(NAME, HOOK) \
+	asm(".section " #NAME",\"aR\"\n" \
+	    ".dc.a "#HOOK" - .\n" \
+	    ".section .text");
+
+#endif /* set_hooks_arch.h */