mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
5662433c38
In _dl_tlsdesc_dynamic, there are three 'addi.d sp, sp, -size' instructions to allocate stack size for Float/LSX/LASX registers. Every 'addi.d sp, sp, -size' needs a cfi_adjust_cfa_offset because of sp is used to compute CFA. But only one 'addi.d sp, sp, -size' will be run according to HWCAP value. And all cfi_adjust_cfa_offset will be executed in stack unwinding, it result in incorrect CFA. Change _dl_tlsdesc_dynamic to _dl_tlsdesc_dynamic, _dl_tlsdesc_dynamic_lsx and _dl_tlsdesc_dynamic_lasx. Conflicting cfi instructions can be distributed to the three functions. And cfi instructions can correspond to stack down instructions.
54 lines
1.7 KiB
C
54 lines
1.7 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);
|
|
#ifndef __loongarch_soft_float
|
|
extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic_lasx (struct tlsdesc *);
|
|
extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic_lsx (struct tlsdesc *);
|
|
#endif
|
|
extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic (struct tlsdesc *);
|
|
#endif
|
|
|
|
#endif
|