mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
66 lines
2.0 KiB
ArmAsm
66 lines
2.0 KiB
ArmAsm
/* Copyright (C) 1993-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Brendan Kehoe (brendan@zen.org).
|
|
|
|
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 <features.h>
|
|
|
|
#if defined(PIC)
|
|
/* Put this at the end of libc's text segment so that all of
|
|
the direct branches from the syscalls are forward, and
|
|
thus predicted not taken. */
|
|
.section .text.last, "ax", @progbits
|
|
#else
|
|
.text
|
|
#endif
|
|
|
|
#if IS_IN (libc)
|
|
# define SYSCALL_ERROR_ERRNO __libc_errno
|
|
#else
|
|
# define SYSCALL_ERROR_ERRNO errno
|
|
#endif
|
|
|
|
.align 4
|
|
.globl __syscall_error
|
|
.ent __syscall_error
|
|
__syscall_error:
|
|
/* When building a shared library, we branch here without having
|
|
loaded the GP. Nor, since it was a direct branch, have we
|
|
loaded PV with our address.
|
|
|
|
When building a static library, we tail call here from another
|
|
object file, possibly with a different GP, and must return with
|
|
the GP of our caller in place so that linker relaxation works.
|
|
|
|
Both issues are solved by computing the GP into T1 instead of
|
|
clobbering the traditional GP register. */
|
|
.prologue 0
|
|
mov v0, t0
|
|
br t1, 1f
|
|
1: ldah t1, 0(t1) !gpdisp!1
|
|
call_pal PAL_rduniq
|
|
|
|
lda t1, 0(t1) !gpdisp!1
|
|
ldq t1, SYSCALL_ERROR_ERRNO(t1) !gottprel
|
|
addq v0, t1, t1
|
|
lda v0, -1
|
|
|
|
stl t0, 0(t1)
|
|
ret
|
|
|
|
.end __syscall_error
|