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aarch64: Remove the unused __read_tp symbol

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This was likely a mistake in the original aarch64 port copied over
from arm: on aarch64 tpidr_el0 register is always available.

The __read_tp symbol is visible with static linking, but it's not
part of the public ABI so it should be safe to remove.
This commit is contained in:
Szabolcs Nagy 2021-02-18 10:56:34 +00:00
parent 418f5783d9
commit fb37ef6960
3 changed files with 0 additions and 51 deletions
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7
sysdeps/unix/sysv/linux/aarch64/Makefile
View File

@ -1,11 +1,4 @@
ifeq ($(subdir),csu)
sysdep_routines += __read_tp libc-__read_tp
static-only-routines += __read_tp
shared-only-routines += libc-__read_tp
endif
ifeq ($(subdir),elf)
sysdep-rtld-routines += __read_tp
ifeq ($(build-shared),yes)
# This is needed for DSO loading from static binaries.
sysdep-dl-routines += dl-static

25
sysdeps/unix/sysv/linux/aarch64/__read_tp.S
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@ -1,25 +0,0 @@
/* Copyright (C) 2005-2021 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>
.hidden __read_tp
ENTRY (__read_tp)
mrs x0, tpidr_el0
RET
END (__read_tp)

19
sysdeps/unix/sysv/linux/aarch64/libc-__read_tp.S
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@ -1,19 +0,0 @@
/* Copyright (C) 2009-2021 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 <__read_tp.S>