mirror of
git://sourceware.org/git/glibc.git
synced 2025-03-06 20:58:33 +01:00
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.
92 lines
2.5 KiB
ArmAsm
92 lines
2.5 KiB
ArmAsm
/* Thread-local storage 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/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <tls.h>
|
|
#include "tlsdesc.h"
|
|
|
|
.text
|
|
|
|
/* Compute the thread pointer offset for symbols in the static
|
|
TLS block. The offset is the same for all threads.
|
|
Prototype:
|
|
_dl_tlsdesc_return (tlsdesc *); */
|
|
.hidden _dl_tlsdesc_return
|
|
.global _dl_tlsdesc_return
|
|
.type _dl_tlsdesc_return,%function
|
|
cfi_startproc
|
|
.align 2
|
|
_dl_tlsdesc_return:
|
|
REG_L a0, a0, 8
|
|
RET
|
|
cfi_endproc
|
|
.size _dl_tlsdesc_return, .-_dl_tlsdesc_return
|
|
|
|
/* Handler for undefined weak TLS symbols.
|
|
Prototype:
|
|
_dl_tlsdesc_undefweak (tlsdesc *);
|
|
|
|
The second word of the descriptor contains the addend.
|
|
Return the addend minus the thread pointer. This ensures
|
|
that when the caller adds on the thread pointer it gets back
|
|
the addend. */
|
|
.hidden _dl_tlsdesc_undefweak
|
|
.global _dl_tlsdesc_undefweak
|
|
.type _dl_tlsdesc_undefweak,%function
|
|
cfi_startproc
|
|
.align 2
|
|
_dl_tlsdesc_undefweak:
|
|
REG_L a0, a0, 8
|
|
sub.d a0, a0, tp
|
|
RET
|
|
cfi_endproc
|
|
.size _dl_tlsdesc_undefweak, .-_dl_tlsdesc_undefweak
|
|
|
|
#ifdef SHARED
|
|
|
|
#ifndef __loongarch_soft_float
|
|
|
|
#define USE_LASX
|
|
#define _dl_tlsdesc_dynamic _dl_tlsdesc_dynamic_lasx
|
|
#define Lret Lret_lasx
|
|
#define Lslow Lslow_lasx
|
|
#include "dl-tlsdesc-dynamic.h"
|
|
#undef FRAME_SIZE
|
|
#undef USE_LASX
|
|
#undef _dl_tlsdesc_dynamic
|
|
#undef Lret
|
|
#undef Lslow
|
|
|
|
#define USE_LSX
|
|
#define _dl_tlsdesc_dynamic _dl_tlsdesc_dynamic_lsx
|
|
#define Lret Lret_lsx
|
|
#define Lslow Lslow_lsx
|
|
#include "dl-tlsdesc-dynamic.h"
|
|
#undef FRAME_SIZE
|
|
#undef USE_LSX
|
|
#undef _dl_tlsdesc_dynamic
|
|
#undef Lret
|
|
#undef Lslow
|
|
|
|
#endif /* #ifndef __loongarch_soft_float */
|
|
|
|
#include "dl-tlsdesc-dynamic.h"
|
|
|
|
#endif /* #ifdef SHARED */
|