glibc/sysdeps/aarch64/dl-tlsdesc.h
Szabolcs Nagy 91c5a366d8 aarch64: Remove barriers from TLS descriptor functions
Remove ldar synchronization and most lazy TLSDESC initialization
related code.

	* sysdeps/aarch64/dl-machine.h (elf_machine_runtime_setup): Remove
	DT_TLSDESC_GOT initialization.
	* sysdeps/aarch64/dl-tlsdesc.S (_dl_tlsdesc_return_lazy): Remove.
	(_dl_tlsdesc_resolve_rela): Likewise.
	(_dl_tlsdesc_resolve_hold): Likewise.
	(_dl_tlsdesc_undefweak): Remove ldar.
	(_dl_tlsdesc_dynamic): Likewise.
	* sysdeps/aarch64/dl-tlsdesc.h (_dl_tlsdesc_return_lazy): Remove.
	(_dl_tlsdesc_resolve_rela): Likewise.
	(_dl_tlsdesc_resolve_hold): Likewise.
	* sysdeps/aarch64/tlsdesc.c (_dl_tlsdesc_resolve_rela_fixup): Remove.
	(_dl_tlsdesc_resolve_hold_fixup): Likewise.
	(_dl_tlsdesc_resolve_rela): Likewise.
	(_dl_tlsdesc_resolve_hold): Likewise.
2017-11-03 14:43:32 +00:00

59 lines
1.6 KiB
C

/* Thread-local storage descriptor handling in the ELF dynamic linker.
AArch64 version.
Copyright (C) 2011-2017 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
<http://www.gnu.org/licenses/>. */
#ifndef _AARCH64_DL_TLSDESC_H
#define _AARCH64_DL_TLSDESC_H 1
/* Type used to represent a TLS descriptor in the GOT. */
struct tlsdesc
{
ptrdiff_t (*entry) (struct tlsdesc *);
void *arg;
};
typedef struct dl_tls_index
{
unsigned long int ti_module;
unsigned long int ti_offset;
} tls_index;
/* Type used as the argument in a TLS descriptor for a symbol that
needs dynamic TLS offsets. */
struct tlsdesc_dynamic_arg
{
tls_index tlsinfo;
size_t gen_count;
};
extern ptrdiff_t attribute_hidden
_dl_tlsdesc_return (struct tlsdesc *);
extern ptrdiff_t attribute_hidden
_dl_tlsdesc_undefweak (struct tlsdesc *);
# ifdef SHARED
extern void *_dl_make_tlsdesc_dynamic (struct link_map *, size_t);
extern ptrdiff_t attribute_hidden
_dl_tlsdesc_dynamic (struct tlsdesc *);
#endif
#endif