mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
/* Symbol rediretion for loader/static initialization code.
|
|
Copyright (C) 2022-2024 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_IFUNC_GENERIC_H
|
|
#define _DL_IFUNC_GENERIC_H
|
|
|
|
/* The compiler might optimize loops or other constructs to library calls even
|
|
in freestanding mode. Although it is safe in most scenarios, on program
|
|
loading and static startup, iFUNC resolution might require other dynamic
|
|
relocation that are not yet done.
|
|
|
|
Instead of adding per-file compiler flags to avoid the libcall generation,
|
|
this header defines generic symbols that will be routed instead of the
|
|
default symbols name.
|
|
|
|
Each port can then make the required redirection to the expected generic
|
|
implementation if the symbol is provided as iFUNC, with a global definition
|
|
such as:
|
|
|
|
asm ("memset = __memset_generic");
|
|
*/
|
|
|
|
#endif
|