/* Restartable Sequences Linux powerpc architecture header.
   Copyright (C) 2020 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 following trap instruction:

   powerpc-be:    0f e5 00 0b           twui   r5,11
   powerpc64-le:  0b 00 e5 0f           twui   r5,11
   powerpc64-be:  0f e5 00 0b           twui   r5,11  */

#define RSEQ_SIG        0x0fe5000b