linux-kernel - [PATCH 1/2] scripts/decodecode: Set ARCH when running natively on arm/arm64

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Message-Id: <20181122121440.74913-2-marc.zyngier@arm.com>
Date:   Thu, 22 Nov 2018 12:14:39 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Will Deacon <will.deacon@....com>
Subject: [PATCH 1/2] scripts/decodecode: Set ARCH when running natively on arm/arm64

When running decodecode natively on arm64, ARCH is likely not to be set,
and we end-up with .4byte instead of .inst when generating the disassembly.

Similar effects would occur if running natively on a 32bit ARM platform,
although that's even less popular.

A simple workaround is to populate ARCH when it is not set and that we're
running on an arm/arm64 system.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 scripts/decodecode | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/decodecode b/scripts/decodecode
index 9cef558528aa..ba8b8d5834e6 100755
--- a/scripts/decodecode
+++ b/scripts/decodecode
@@ -60,6 +60,13 @@ case $width in
 4) type=4byte ;;
 esac
 
+if [ -z "$ARCH" ]; then
+    case `uname -m` in
+	aarch64*) ARCH=arm64 ;;
+	arm*) ARCH=arm ;;
+    esac
+fi
+
 disas() {
 	${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1
 
-- 
2.19.1