From: caiyinyu Date: Sat, 26 Oct 2024 08:33:07 +0000 (+0800) Subject: LoongArch: Add RSEQ_SIG in rseq.h. X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=93ced0e1b83ec837f3de70c751180d225fe3f8dc;p=glibc.git LoongArch: Add RSEQ_SIG in rseq.h. Signed-off-by: caiyinyu --- diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/rseq.h b/sysdeps/unix/sysv/linux/loongarch/bits/rseq.h new file mode 100644 index 0000000000..7468a05243 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/bits/rseq.h @@ -0,0 +1,36 @@ +/* Restartable Sequences Linux LoongArch architecture header. + Copyright (C) 2024 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 + . */ + +#ifndef _SYS_RSEQ_H +# error "Never use directly; include 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 break instruction: + + 0x002a0010 break 0x10 +*/ + +#define RSEQ_SIG 0x002a0010