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mirror of git://sourceware.org/git/glibc.git synced 2024-12-21 04:31:04 +08:00
glibc/sysdeps/loongarch/dl-tlsdesc.h
mengqinggang 1dbf2bef79 LoongArch: Add support for TLS Descriptors
This is mostly based on AArch64 and RISC-V implementation.

Add R_LARCH_TLS_DESC32 and R_LARCH_TLS_DESC64 relocations.

For _dl_tlsdesc_dynamic function slow path, temporarily save and restore
all vector registers.
2024-05-15 10:31:53 +08:00

50 lines
1.5 KiB
C

/* Thread-local storage descriptor handling in the ELF dynamic linker.
LoongArch version.
Copyright (C) 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_TLSDESC_H
#define _DL_TLSDESC_H
#include <dl-tls.h>
/* Type used to represent a TLS descriptor in the GOT. */
struct tlsdesc
{
ptrdiff_t (*entry) (struct tlsdesc *);
void *arg;
};
/* 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