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30891f35fa
We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
65 lines
1.9 KiB
ArmAsm
65 lines
1.9 KiB
ArmAsm
/* Copyright (C) 1993-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <features.h>
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#if defined(PIC)
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/* Put this at the end of libc's text segment so that all of
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the direct branches from the syscalls are forward, and
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thus predicted not taken. */
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.section .text.last, "ax", @progbits
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#else
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.text
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#endif
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#if IS_IN (libc)
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# define SYSCALL_ERROR_ERRNO __libc_errno
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#else
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# define SYSCALL_ERROR_ERRNO errno
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#endif
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.align 4
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.globl __syscall_error
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.ent __syscall_error
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__syscall_error:
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/* When building a shared library, we branch here without having
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loaded the GP. Nor, since it was a direct branch, have we
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loaded PV with our address.
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When building a static library, we tail call here from another
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object file, possibly with a different GP, and must return with
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the GP of our caller in place so that linker relaxation works.
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Both issues are solved by computing the GP into T1 instead of
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clobbering the traditional GP register. */
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.prologue 0
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mov v0, t0
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br t1, 1f
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1: ldah t1, 0(t1) !gpdisp!1
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call_pal PAL_rduniq
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lda t1, 0(t1) !gpdisp!1
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ldq t1, SYSCALL_ERROR_ERRNO(t1) !gottprel
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addq v0, t1, t1
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lda v0, -1
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stl t0, 0(t1)
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ret
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.end __syscall_error
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