From: Jan Beulich <jbeulich@suse.com>
To: Binutils <binutils@sourceware.org>
Cc: Richard Earnshaw <rearnsha@arm.com>,
Marcus Shawcroft <marcus.shawcroft@arm.com>
Subject: [PATCH] Arm64: support CLEARBHB alias
Date: Mon, 12 Sep 2022 10:40:26 +0200 [thread overview]
Message-ID: <a9d71da9-0416-9c0e-83d5-6e8ed360f516@suse.com> (raw)
While the Arm v8 ARM (rev I-a) still doesn't mention this alias, it is
(typically via a macro) already in use in kernels and alike.
---
Diffs of generated files omitted.
--- a/gas/testsuite/gas/aarch64/system.d
+++ b/gas/testsuite/gas/aarch64/system.d
@@ -12,6 +12,7 @@ Disassembly of section \.text:
.*: d503207f wfi
.*: d503209f sev
.*: d50320bf sevl
+.*: d50322df clearbhb
.*: d503201f nop
.*: d503203f yield
.*: d503205f wfe
@@ -34,7 +35,7 @@ Disassembly of section \.text:
.*: d503227f hint #0x13
.*: d503229f (hint #0x14|csdb)
.*: d50322bf hint #0x15
-.*: d50322df hint #0x16
+.*: d50322df (hint #0x16|clearbhb)
.*: d50322ff hint #0x17
.*: d503231f (hint #0x18|paciaz)
.*: d503233f (hint #0x19|paciasp)
--- a/gas/testsuite/gas/aarch64/system.s
+++ b/gas/testsuite/gas/aarch64/system.s
@@ -11,6 +11,7 @@
wfi
sev
sevl
+ clearbhb
.macro all_hints from=0, to=127
hint \from
--- a/opcodes/aarch64-tbl.h
+++ b/opcodes/aarch64-tbl.h
@@ -4034,6 +4034,7 @@ const struct aarch64_opcode aarch64_opco
CORE_INSN ("esb", 0xd503221f, 0xffffffff, ic_system, 0, OP0 (), {}, F_ALIAS),
CORE_INSN ("psb", 0xd503223f, 0xffffffff, ic_system, 0, OP1 (BARRIER_PSB), {}, F_ALIAS),
CORE_INSN ("tsb", 0xd503225f, 0xffffffff, ic_system, 0, OP1 (BARRIER_PSB), {}, F_ALIAS),
+ CORE_INSN ("clearbhb", 0xd50322df, 0xffffffff, ic_system, 0, OP0 (), {}, F_ALIAS),
CORE_INSN ("clrex", 0xd503305f, 0xfffff0ff, ic_system, 0, OP1 (UIMM4), {}, F_OPD0_OPT | F_DEFAULT (0xF)),
CORE_INSN ("dsb", 0xd503309f, 0xfffff0ff, ic_system, 0, OP1 (BARRIER), {}, F_HAS_ALIAS),
V8_7_INSN ("dsb", 0xd503323f, 0xfffff3ff, ic_system, OP1 (BARRIER_DSB_NXS), {}, F_HAS_ALIAS),
next reply other threads:[~2022-09-12 8:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 8:40 Jan Beulich [this message]
2022-09-28 12:00 ` Ping: " Jan Beulich
2022-10-05 17:48 ` Richard Earnshaw
2022-10-06 6:06 ` Jan Beulich
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