diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2023-01-23 13:46:00 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2023-01-24 11:49:43 +0000 |
| commit | 2bbbb4015aa1af62f8002de86de019786ecf63a7 (patch) | |
| tree | b92f7a08983b3813a00ddcbce940803b774fede1 /arch/arm64/kernel/patching.c | |
| parent | 47a15aa544279d34e14e17ca3b5855e39b946cec (diff) | |
| download | linux-2bbbb4015aa1af62f8002de86de019786ecf63a7.tar.gz linux-2bbbb4015aa1af62f8002de86de019786ecf63a7.tar.bz2 linux-2bbbb4015aa1af62f8002de86de019786ecf63a7.zip | |
arm64: insn: Add helpers for BTI
In subsequent patches we'd like to check whether an instruction is a
BTI. In preparation for this, add basic instruction helpers for BTI
instructions.
Per ARM DDI 0487H.a section C6.2.41, BTI is encoded in binary as
follows, MSB to LSB:
1101 0101 000 0011 0010 0100 xx01 1111
Where the `xx` bits encode J/C/JC:
00 : (omitted)
01 : C
10 : J
11 : JC
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20230123134603.1064407-6-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/patching.c')
0 files changed, 0 insertions, 0 deletions