From nobody Thu Jun 18 15:47:58 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5247CC433F5 for ; Tue, 19 Apr 2022 16:13:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354450AbiDSQP6 (ORCPT ); Tue, 19 Apr 2022 12:15:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354456AbiDSQPz (ORCPT ); Tue, 19 Apr 2022 12:15:55 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D759E3878F for ; Tue, 19 Apr 2022 09:13:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650384791; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=WjFvNg3rU+G0+XnvRDwEILWt438/TIjgJEsWycqF+yE=; b=C4QD1QkRYr8ZnBxOWrjMZ5W2guGPm9UFGGVTsnwX1BXZMSxmI1oCBnD+YYfiLnh8mmK2AN 7erGJ1mBBZfttIgcZyzCTV3Xn/aHAr+2vDZdMq6SUhIs8GEkgXK8LredsPF0iaILOvumot RYL/yAmbta0tPCse0yKAuKOWPLUGGEA= Received: from mail-qv1-f71.google.com (mail-qv1-f71.google.com [209.85.219.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-139-NhBN_5ogMJi28N5UlJwNQw-1; Tue, 19 Apr 2022 12:13:09 -0400 X-MC-Unique: NhBN_5ogMJi28N5UlJwNQw-1 Received: by mail-qv1-f71.google.com with SMTP id u7-20020a0cb407000000b00446687f0b1bso3437849qve.5 for ; Tue, 19 Apr 2022 09:13:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=WjFvNg3rU+G0+XnvRDwEILWt438/TIjgJEsWycqF+yE=; b=Se64coYN5/QFXw8SPf9/fs1QE63L7/nuQ4p5puIZuz5KR39NLfx3XutRTZGSFIcz6j Fi+IwlTs4JqxyjQOHY7dRReAMxT90nIVyh1puQZjfOmECrT5luwC29eBaxWETMnj2b5G puN0A/ndQbFS5R6TvZGG/GJdjyUgExlHqlQl8wfSwc9vhkCzgCF0i1fo2PQGBo9YigqN XtTROBWufqHtLiVjTAqW65BpEKStymqNCG+A5L+TajJbXpae1kC0TEPptwmDIRHjcbH1 Gx2wX87gODAwPJ0ncbgj4IN7bqRqGfa8RtNHxJJ1Bc5myH/eQfGGOlvJfL+GjjRDqYXN XFYg== X-Gm-Message-State: AOAM5325uPgWB45A+Y7eX4Joyz24BrpisnqV+YarrfFpwGcztDmGXyx6 /O9m83kzxsrX7IBesUL+mYBKR42//cov33DdDR0QApXC9T8l+DnE+4zw6VCFf5sY++JNbJqAJI8 VI/mlpS/OObIPY1FgBBHFoibr X-Received: by 2002:a05:6214:27c8:b0:446:5172:7014 with SMTP id ge8-20020a05621427c800b0044651727014mr9432859qvb.97.1650384788501; Tue, 19 Apr 2022 09:13:08 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw5iuDnPE4GEAao8pc4cNqkiaRwfU8qL6wCsLyTs+BYbxYR0duTZ9Ibt6KolZjDOW6vmto/+Q== X-Received: by 2002:a05:6214:27c8:b0:446:5172:7014 with SMTP id ge8-20020a05621427c800b0044651727014mr9432837qvb.97.1650384788220; Tue, 19 Apr 2022 09:13:08 -0700 (PDT) Received: from treble.redhat.com ([2600:1700:6e32:6c00::35]) by smtp.gmail.com with ESMTPSA id p12-20020a05622a00cc00b002ebdd6ef303sm238633qtw.43.2022.04.19.09.13.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Apr 2022 09:13:07 -0700 (PDT) From: Josh Poimboeuf To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Miroslav Benes Subject: [PATCH v2] scripts: Create objdump-func helper script Date: Tue, 19 Apr 2022 09:12:23 -0700 Message-Id: X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a simple script which disassembles a single function from an object file. Comes in handy for objtool warnings and kernel stack traces. Originally-by: Peter Zijlstra Signed-off-by: Josh Poimboeuf --- v2: - require gawk scripts/objdump-func | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100755 scripts/objdump-func diff --git a/scripts/objdump-func b/scripts/objdump-func new file mode 100755 index 000000000000..67229acfe3a6 --- /dev/null +++ b/scripts/objdump-func @@ -0,0 +1,18 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Disassemble a single function. +# +# usage: objdump-func + +set -o errexit +set -o nounset + +OBJDUMP=3D"${CROSS_COMPILE:-}objdump" + +command -v gawk >/dev/null 2>&1 || die "gawk isn't installed" + +OBJ=3D$1; shift +FUNC=3D$1; shift + +${OBJDUMP} -wdr $@ $OBJ | gawk "/^\$/ { P=3D0; } /$FUNC[^>]*>:\$/ { P=3D1;= O=3Dstrtonum(\"0x\" \$1); } { if (P) { o=3Dstrtonum(\"0x\" \$1); printf(\"= %04x \", o-O); print \$0; } }" --=20 2.34.1