From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC11BC282DD for ; Thu, 9 Jan 2020 16:16:04 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A3E0C20661 for ; Thu, 9 Jan 2020 16:16:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WgpHjCnU"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="S3Cy4SAQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3E0C20661 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Qmk/KcI3wKmF0UBGPuADPjdBDr+lkaQlg4McuC2sTEk=; b=WgpHjCnU/KlJvC wySzpw0JTHgFkS7pVD1LzcfWjGvg50nAGiOpqE6YRKhcoqdddeDUChqzAD+lx13WkOzcSNmWBLTqC vyPogM1/HSzixNN7sCydiN5aASXW8vrOXUeXU7Vrndt7HtkpXwLusSHSijT6B86FLBhf1Dlklpbfw QV9gbDvxCUxqJ6XsZepqLaS/rEz1CDLUu+EP1muOSVVZ6ju+lSnKh+hkJt/H2/Jic/puCcefC+EkP 0VpgRIXIuSLYcJu7Mibr4qAKWZPw8f3upSdvSJxSmCb58+CnHZUklx3v8tgFMT4n46i/Ul46bUqiH kVVJOPumNH3LmVl1F4PA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipaTb-0002Ta-N3; Thu, 09 Jan 2020 16:16:03 +0000 Received: from us-smtp-1.mimecast.com ([205.139.110.61] helo=us-smtp-delivery-1.mimecast.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ipaLW-0000ge-8C for linux-arm-kernel@lists.infradead.org; Thu, 09 Jan 2020 16:07:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1578586060; 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: in-reply-to:in-reply-to:references:references; bh=gF5zGccN6XPj4wdads+TYexD8DaIE0r9gJyUAoloV6U=; b=S3Cy4SAQuRJswpJ8VZkMuuoAKy1zTJcXwjZPCi7DSVdiWhlyMNrDs2GpDuiKosB3sFDYzC e7vCpNrspdosrugio+vtthe0cKZE6O6UHgOYB7w+ds1lg3stUY8to5wrr/Pz+FHYjuUNMD iXZkkNLprp6JgGdOQrGlm6O4dZ6Hb8o= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-262-8N3DI3L_P_mhEDdTqTfHwA-1; Thu, 09 Jan 2020 11:07:39 -0500 Received: by mail-wm1-f70.google.com with SMTP id t4so1104313wmf.2 for ; Thu, 09 Jan 2020 08:07:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=V80sKnfPgpuJ2PN6PlqMSnAckHTRWhZvUDB6P0wLWgc=; b=kBUti04q8BUjHzMFJRXyC4zbKHC6Lhe3B0lXO3nVPNzvdHNJzqqmOtnkXpticOKWuJ OwD/BlKf3STJKI24devQdDv+t35Fv4yQtf6O5IJsDyGRUjuj/eU04gMtDefnxnufnJW5 dOZeuaCndczey/ZyV72TtVrd7SPnc1V3VKOedVIpOLQsy5JFAWDYjg9CBmZkuDujAJmR jM04+eEmMqSpVxdioFG19nLztPKCrJeMhk61zkOB/0NSn4DZsbh3lfrJ0f85Bqtr6nnm ceF/W9VgxYl9I6b4yEnM0k2n9n1o8zBiddjDr7dxGtbRXVeVxucl2SOC1kbwb4WPC/7W 3mtg== X-Gm-Message-State: APjAAAW5Spatg+t+bBi0DhDhicOkXbN8B38M/6E8OXCV/YemK5D7ZKhD 9cU6+peeJgrh7aPZTSUcyzpAlH6dxLcY9lafqy3tcYbfe5ZtuPt+k6DiRcfx3817ugSTdAfpPBQ YM0bvyrquHpcmAEKH/UQ5ImQ2w4WE/NMYoTE= X-Received: by 2002:a1c:96c4:: with SMTP id y187mr5972340wmd.112.1578586057203; Thu, 09 Jan 2020 08:07:37 -0800 (PST) X-Google-Smtp-Source: APXvYqwc4TaEWjCmUkmfkOmwGRLIgB1O+Rz/bvnkIEzkSOYGeyv8HJLRBacELGQ/7+dBBu8TEZebjw== X-Received: by 2002:a1c:96c4:: with SMTP id y187mr5972312wmd.112.1578586057002; Thu, 09 Jan 2020 08:07:37 -0800 (PST) Received: from redfedo.redhat.com (host81-140-166-164.range81-140.btcentralplus.com. [81.140.166.164]) by smtp.gmail.com with ESMTPSA id h2sm8591413wrv.66.2020.01.09.08.07.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jan 2020 08:07:36 -0800 (PST) From: Julien Thierry To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [RFC v5 35/57] objtool: arm64: Decode atomic load/store Date: Thu, 9 Jan 2020 16:02:38 +0000 Message-Id: <20200109160300.26150-36-jthierry@redhat.com> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200109160300.26150-1-jthierry@redhat.com> References: <20200109160300.26150-1-jthierry@redhat.com> MIME-Version: 1.0 X-MC-Unique: 8N3DI3L_P_mhEDdTqTfHwA-1 X-Mimecast-Spam-Score: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200109_080742_408313_89F8D5F5 X-CRM114-Status: GOOD ( 10.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Julien Thierry , peterz@infradead.org, catalin.marinas@arm.com, raphael.gault@arm.com, jpoimboe@redhat.com, will@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Decode v8.1 atomic load/store instructions. Suggested-by: Raphael Gault Signed-off-by: Julien Thierry --- tools/objtool/arch/arm64/decode.c | 86 +++++++++++++++++++ .../objtool/arch/arm64/include/insn_decode.h | 2 + 2 files changed, 88 insertions(+) diff --git a/tools/objtool/arch/arm64/decode.c b/tools/objtool/arch/arm64/decode.c index e3f77d68b282..1897f62987fa 100644 --- a/tools/objtool/arch/arm64/decode.c +++ b/tools/objtool/arch/arm64/decode.c @@ -875,6 +875,11 @@ static struct aarch64_insn_decoder ld_st_decoder[] = { .value = 0b001100000000011, .decode_func = arm_decode_ld_st_imm_pre, }, + { + .mask = 0b001101010000011, + .value = 0b001100010000000, + .decode_func = arm_decode_atomic, + }, { .mask = 0b001101010000011, .value = 0b001100010000010, @@ -1667,6 +1672,87 @@ int arm_decode_ld_st_imm_unpriv(u32 instr, enum insn_type *type, return 0; } +static struct aarch64_insn_decoder atom_unallocs_decoder[] = { + { + .mask = 0b1001111, + .value = 0b0001001, + }, + { + .mask = 0b1001110, + .value = 0b0001010, + }, + { + .mask = 0b1001111, + .value = 0b0001101, + }, + { + .mask = 0b1001110, + .value = 0b0001110, + }, + { + .mask = 0b1101111, + .value = 0b0001100, + }, + { + .mask = 0b1111111, + .value = 0b0111100, + }, + { + .mask = 0b1000000, + .value = 0b1000000, + }, +}; + +int arm_decode_atomic(u32 instr, enum insn_type *type, + unsigned long *immediate, + struct list_head *ops_list) +{ + unsigned char V = 0, A = 0, R = 0, o3 = 0, opc = 0; + unsigned char rn = 0, rt = 0; + unsigned char decode_field = 0; + struct stack_op *op; + int i = 0; + + V = EXTRACT_BIT(instr, 26); + A = EXTRACT_BIT(instr, 23); + R = EXTRACT_BIT(instr, 22); + o3 = EXTRACT_BIT(instr, 15); + opc = (instr >> 12) & ONES(3); + + decode_field = (V << 6) | (A << 5) | (R << 4) | (o3 << 3) | opc; + + for (i = 0; i < ARRAY_SIZE(atom_unallocs_decoder); i++) { + if ((decode_field & atom_unallocs_decoder[i].mask) == + atom_unallocs_decoder[i].value) { + return arm_decode_unknown(instr, + type, + immediate, + ops_list); + } + } + + rn = (instr >> 5) & ONES(5); + rt = instr & ONES(5); + + if (!stack_related_reg(rn)) { + *type = INSN_OTHER; + return 0; + } + *type = INSN_STACK; + + op = calloc(1, sizeof(*op)); + list_add_tail(&op->list, ops_list); + + op->src.reg = rn; + op->src.type = OP_DEST_REG_INDIRECT; + op->src.offset = 0; + op->dest.type = OP_DEST_REG; + op->dest.reg = rt; + op->dest.offset = 0; + + return 0; +} + int arm_decode_ld_st_regs_off(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list) diff --git a/tools/objtool/arch/arm64/include/insn_decode.h b/tools/objtool/arch/arm64/include/insn_decode.h index 61152b4aa42a..89488c5df5e9 100644 --- a/tools/objtool/arch/arm64/include/insn_decode.h +++ b/tools/objtool/arch/arm64/include/insn_decode.h @@ -130,6 +130,8 @@ int arm_decode_ld_st_imm_unpriv(u32 instr, enum insn_type *type, int arm_decode_ld_st_imm_pre(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list); +int arm_decode_atomic(u32 instr, enum insn_type *type, + unsigned long *immediate, struct list_head *ops_list); int arm_decode_ld_st_regs_off(u32 instr, enum insn_type *type, unsigned long *immediate, struct list_head *ops_list); -- 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel