selftests/rseq/rseq-arm.h

1 /* SPDX-License-Identifier: LGPL-2.1 OR MIT */
3  * rseq-arm.h
5  * (C) Copyright 2016-2022 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9  * - ARM little endian
12  * value 0x5de3. This traps if user-space reaches this instruction by mistake,
14  * pointer to attacker-controlled code on rseq abort.
23  * little endian:
27  * - ARMv6+ big endian (BE8):
29  * ARMv6+ -mbig-endian generates mixed endianness code vs data: little-endian
30  * code and big-endian data. The data value of the signature needs to have its
44  * - Prior to ARMv6 big endian (BE32):
46  * Prior to ARMv6, -mbig-endian generates big-endian code and data
52  * data (not a trap instruction) prior to ARMv6 on big endian. This is
96 				(post_commit_ip - start_ip), abort_ip)
102  * post-commit IP are already part of the __rseq_cs section and should not be
139 				(post_commit_ip - start_ip), abort_ip)
146 /* Per-cpu-id indexing. */
150 #include "rseq-arm-bits.h"
154 #include "rseq-arm-bits.h"
158 /* Per-mm-cid indexing. */
162 #include "rseq-arm-bits.h"
166 #include "rseq-arm-bits.h"
174 #include "rseq-arm-bits.h"