mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 13:50:06 +00:00
581c785bf3
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 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* Restartable Sequences Linux mips architecture header.
|
|
Copyright (C) 2021-2022 Free Software Foundation, Inc.
|
|
|
|
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/>. */
|
|
|
|
#ifndef _SYS_RSEQ_H
|
|
# error "Never use <bits/rseq.h> directly; include <sys/rseq.h> instead."
|
|
#endif
|
|
|
|
/* RSEQ_SIG is a signature required before each abort handler code.
|
|
|
|
It is a 32-bit value that maps to actual architecture code compiled
|
|
into applications and libraries. It needs to be defined for each
|
|
architecture. When choosing this value, it needs to be taken into
|
|
account that generating invalid instructions may have ill effects on
|
|
tools like objdump, and may also have impact on the CPU speculative
|
|
execution efficiency in some cases.
|
|
|
|
RSEQ_SIG uses the break instruction. The instruction pattern is:
|
|
|
|
On MIPS:
|
|
0350000d break 0x350
|
|
|
|
On nanoMIPS:
|
|
00100350 break 0x350
|
|
|
|
On microMIPS:
|
|
0000d407 break 0x350
|
|
|
|
For nanoMIPS32 and microMIPS, the instruction stream is encoded as
|
|
16-bit halfwords, so the signature halfwords need to be swapped
|
|
accordingly for little-endian. */
|
|
|
|
#if defined (__nanomips__)
|
|
# ifdef __MIPSEL__
|
|
# define RSEQ_SIG 0x03500010
|
|
# else
|
|
# define RSEQ_SIG 0x00100350
|
|
# endif
|
|
#elif defined (__mips_micromips)
|
|
# ifdef __MIPSEL__
|
|
# define RSEQ_SIG 0xd4070000
|
|
# else
|
|
# define RSEQ_SIG 0x0000d407
|
|
# endif
|
|
#elif defined (__mips__)
|
|
# define RSEQ_SIG 0x0350000d
|
|
#else
|
|
/* Unknown MIPS architecture. */
|
|
#endif
|