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/* Machine-dependent ELF indirect relocation inline functions.
Copyright (C) 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 _DL_IREL_H
#define _DL_IREL_H
#include <stdio.h>
#include <unistd.h>
#include <sys/ifunc.h>
#define ELF_MACHINE_IRELA 1
static inline ElfW (Addr) __attribute ((always_inline))
elf_ifunc_invoke (ElfW (Addr) addr)
{
__ifunc_arg_t arg =
{
._size = sizeof (__ifunc_arg_t),
._hwcap = GLRO(dl_hwcap),
};
return ((ElfW(Addr) (*) (const __ifunc_arg_t *)) (addr)) (&arg);
}
static inline void __attribute ((always_inline))
elf_irela (const ElfW (Rela) *reloc)
{
ElfW (Addr) *const reloc_addr = (void *) reloc->r_offset;
const unsigned long int r_type = ELFW (R_TYPE) (reloc->r_info);
if (__glibc_likely (r_type == R_LARCH_IRELATIVE))
{
ElfW (Addr) value = elf_ifunc_invoke (reloc->r_addend);
*reloc_addr = value;
}
else
__libc_fatal ("Unexpected reloc type in static binary.\n");
}
#endif /* dl-irel.h */
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