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[AArch64][2.26] Backport ARMv8.2 command line option and feature flag
- From: Matthew Wahab <matthew dot wahab at foss dot arm dot com>
- To: "binutils at sourceware dot org" <binutils at sourceware dot org>
- Date: Wed, 9 Dec 2015 12:19:19 +0000
- Subject: [AArch64][2.26] Backport ARMv8.2 command line option and feature flag
- Authentication-results: sourceware.org; auth=none
Hello,
This is a backport of the ARMv8.2 command line option and feature flag
added by https://sourceware.org/ml/binutils-cvs/2015-11/msg00114.html.
The original patch submission is at
https://sourceware.org/ml/binutils/2015-11/msg00130.html
Tested aarch64-none-linux-gnu with cross-compiled check-binutils and
check-gas. Checked the HTML documentation in Firefox.
Ok for trunk?
Matthew
gas/
2015-12-09 Matthew Wahab <matthew.wahab@arm.com>
* config/tc-aarch64.c (aarch64_archs): Add "armv8.2-a".
* doc/c-aarch64.texi (-march): Likewise.
include/opcode/
2015-12-09 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (AARCH64_FEATURE_V8_2): New.
(AARCH64_ARCH_V8_2): New.
>From 04332f1333144b6bc318827da3927a62ea5cc79c Mon Sep 17 00:00:00 2001
From: Matthew Wahab <matthew.wahab@arm.com>
Date: Thu, 19 Nov 2015 09:12:49 +0000
Subject: [PATCH] [AArch64] Add ARMv8.2 command line option and feature flag.
ARMv8.2 is an architectural extension of ARMv8. This patch adds an
architecture feature macro for ARMv8.2 to the binutils AArch64 target
with GAS command line option -march=armv8.2-a.
gas/
2015-11-19 Matthew Wahab <matthew.wahab@arm.com>
* config/tc-aarch64.c (aarch64_archs): Add "armv8.2-a".
* doc/c-aarch64.texi (-march): Likewise.
include/opcode/
2015-11-19 Matthew Wahab <matthew.wahab@arm.com>
* aarch64.h (AARCH64_FEATURE_V8_2): New.
(AARCH64_ARCH_V8_2): New.
Change-Id: If58780560ce37448a22f4c1f39ae41ccaf6d7d47
---
gas/config/tc-aarch64.c | 1 +
gas/doc/c-aarch64.texi | 4 ++--
include/opcode/aarch64.h | 10 +++++++++-
3 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index e854b96..0fd6443 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -7717,6 +7717,7 @@ static const struct aarch64_arch_option_table aarch64_archs[] = {
{"all", AARCH64_ANY},
{"armv8-a", AARCH64_ARCH_V8},
{"armv8.1-a", AARCH64_ARCH_V8_1},
+ {"armv8.2-a", AARCH64_ARCH_V8_2},
{NULL, AARCH64_ARCH_NONE}
};
diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index e7e6ba4..bfd41c3 100644
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -83,8 +83,8 @@ extensions.
This option specifies the target architecture. The assembler will
issue an error message if an attempt is made to assemble an
instruction which will not execute on the target architecture. The
-following architecture names are recognized: @code{armv8-a} and
-@code{armv8.1-a}.
+following architecture names are recognized: @code{armv8-a},
+@code{armv8.1-a} and @code{armv8.2-a}.
If both @option{-mcpu} and @option{-march} are specified, the
assembler will use the setting for @option{-mcpu}. If neither are
diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h
index e30bb61..9addf40 100644
--- a/include/opcode/aarch64.h
+++ b/include/opcode/aarch64.h
@@ -38,6 +38,7 @@ typedef uint32_t aarch64_insn;
/* The following bitmasks control CPU features. */
#define AARCH64_FEATURE_V8 0x00000001 /* All processors. */
+#define AARCH64_FEATURE_V8_2 0x00000020 /* ARMv8.2 processors. */
#define AARCH64_FEATURE_CRYPTO 0x00010000 /* Crypto instructions. */
#define AARCH64_FEATURE_FP 0x00020000 /* FP instructions. */
#define AARCH64_FEATURE_SIMD 0x00040000 /* SIMD instructions. */
@@ -60,7 +61,14 @@ typedef uint32_t aarch64_insn;
| AARCH64_FEATURE_PAN \
| AARCH64_FEATURE_LOR \
| AARCH64_FEATURE_RDMA)
-
+#define AARCH64_ARCH_V8_2 AARCH64_FEATURE (AARCH64_FEATURE_V8, \
+ AARCH64_FEATURE_V8_2 \
+ | AARCH64_FEATURE_FP \
+ | AARCH64_FEATURE_SIMD \
+ | AARCH64_FEATURE_LSE \
+ | AARCH64_FEATURE_PAN \
+ | AARCH64_FEATURE_LOR \
+ | AARCH64_FEATURE_RDMA)
#define AARCH64_ARCH_NONE AARCH64_FEATURE (0, 0)
#define AARCH64_ANY AARCH64_FEATURE (-1, 0) /* Any basic core. */
--
2.1.4