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|
/* Thread-local storage handling in the ELF dynamic linker.
AArch64 version.
Copyright (C) 2011-2016 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/>. */
#include <sysdep.h>
#include <tls.h>
#include "tlsdesc.h"
#define NSAVEDQREGPAIRS 16
#define SAVE_Q_REGISTERS \
stp q0, q1, [sp, #-32*NSAVEDQREGPAIRS]!; \
cfi_adjust_cfa_offset (32*NSAVEDQREGPAIRS); \
stp q2, q3, [sp, #32*1]; \
stp q4, q5, [sp, #32*2]; \
stp q6, q7, [sp, #32*3]; \
stp q8, q9, [sp, #32*4]; \
stp q10, q11, [sp, #32*5]; \
stp q12, q13, [sp, #32*6]; \
stp q14, q15, [sp, #32*7]; \
stp q16, q17, [sp, #32*8]; \
stp q18, q19, [sp, #32*9]; \
stp q20, q21, [sp, #32*10]; \
stp q22, q23, [sp, #32*11]; \
stp q24, q25, [sp, #32*12]; \
stp q26, q27, [sp, #32*13]; \
stp q28, q29, [sp, #32*14]; \
stp q30, q31, [sp, #32*15];
#define RESTORE_Q_REGISTERS \
ldp q2, q3, [sp, #32*1]; \
ldp q4, q5, [sp, #32*2]; \
ldp q6, q7, [sp, #32*3]; \
ldp q8, q9, [sp, #32*4]; \
ldp q10, q11, [sp, #32*5]; \
ldp q12, q13, [sp, #32*6]; \
ldp q14, q15, [sp, #32*7]; \
ldp q16, q17, [sp, #32*8]; \
ldp q18, q19, [sp, #32*9]; \
ldp q20, q21, [sp, #32*10]; \
ldp q22, q23, [sp, #32*11]; \
ldp q24, q25, [sp, #32*12]; \
ldp q26, q27, [sp, #32*13]; \
ldp q28, q29, [sp, #32*14]; \
ldp q30, q31, [sp, #32*15]; \
ldp q0, q1, [sp], #32*NSAVEDQREGPAIRS; \
cfi_adjust_cfa_offset (-32*NSAVEDQREGPAIRS);
.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:
ldr x0, [x0, #8]
RET
cfi_endproc
.size _dl_tlsdesc_return, .-_dl_tlsdesc_return
/* Same as _dl_tlsdesc_return but with synchronization for
lazy relocation.
Prototype:
_dl_tlsdesc_return_lazy (tlsdesc *) ;
*/
.hidden _dl_tlsdesc_return_lazy
.global _dl_tlsdesc_return_lazy
.type _dl_tlsdesc_return_lazy,%function
cfi_startproc
.align 2
_dl_tlsdesc_return_lazy:
/* The ldar here happens after the load from [x0] at the call site
(that is generated by the compiler as part of the TLS access ABI),
so it reads the same value (this function is the final value of
td->entry) and thus it synchroni
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