mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 09:30:06 +00:00
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/* Definitions used by AArch64 indirect function resolvers.
|
|
Copyright (C) 2019-2020 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 _SYS_IFUNC_H
|
|
#define _SYS_IFUNC_H
|
|
|
|
/* A second argument is passed to the ifunc resolver. */
|
|
#define _IFUNC_ARG_HWCAP (1ULL << 62)
|
|
|
|
/* The prototype of a gnu indirect function resolver on AArch64 is
|
|
|
|
ElfW(Addr) ifunc_resolver (uint64_t, const __ifunc_arg_t *);
|
|
|
|
the first argument should have the _IFUNC_ARG_HWCAP bit set and
|
|
the remaining bits should match the AT_HWCAP settings. */
|
|
|
|
/* Second argument to an ifunc resolver. */
|
|
struct __ifunc_arg_t
|
|
{
|
|
unsigned long _size; /* Size of the struct, so it can grow. */
|
|
unsigned long _hwcap;
|
|
unsigned long _hwcap2;
|
|
};
|
|
|
|
typedef struct __ifunc_arg_t __ifunc_arg_t;
|
|
|
|
#endif
|