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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6883DC27C76 for ; Fri, 20 Jan 2023 20:09:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229613AbjATUJw convert rfc822-to-8bit (ORCPT ); Fri, 20 Jan 2023 15:09:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229570AbjATUJv (ORCPT ); Fri, 20 Jan 2023 15:09:51 -0500 Received: from mx0b-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ACBB2E0D9 for ; Fri, 20 Jan 2023 12:09:50 -0800 (PST) Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30KDb3aW019632 for ; Fri, 20 Jan 2023 12:09:49 -0800 Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3n7gdede80-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 20 Jan 2023 12:09:49 -0800 Received: from snc-exhub201.TheFacebook.com (2620:10d:c085:21d::7) by snc-exhub203.TheFacebook.com (2620:10d:c085:21d::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Fri, 20 Jan 2023 12:09:48 -0800 Received: from twshared15216.17.frc2.facebook.com (2620:10d:c085:208::f) by mail.thefacebook.com (2620:10d:c085:21d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Fri, 20 Jan 2023 12:09:47 -0800 Received: by devbig019.vll3.facebook.com (Postfix, from userid 137359) id 663CF25B4B0FD; Fri, 20 Jan 2023 12:09:44 -0800 (PST) From: Andrii Nakryiko To: , , CC: , Subject: [PATCH v2 bpf-next 14/25] libbpf: define i386 syscall regs spec in bpf_tracing.h Date: Fri, 20 Jan 2023 12:09:03 -0800 Message-ID: <20230120200914.3008030-15-andrii@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230120200914.3008030-1-andrii@kernel.org> References: <20230120200914.3008030-1-andrii@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: 4sqXIXo5RYdclyJvqY4NZuGtbmC4EdUo X-Proofpoint-ORIG-GUID: 4sqXIXo5RYdclyJvqY4NZuGtbmC4EdUo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-20_10,2023-01-20_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Define explicit table of registers used for syscall argument passing. Signed-off-by: Andrii Nakryiko --- tools/lib/bpf/bpf_tracing.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index 5fd498821c29..4d04c63fda27 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -115,6 +115,14 @@ #define __PT_PARM1_REG eax #define __PT_PARM2_REG edx #define __PT_PARM3_REG ecx +/* i386 syscall ABI is very different, refer to syscall(2) manpage */ +#define __PT_PARM1_SYSCALL_REG ebx +#define __PT_PARM2_SYSCALL_REG ecx +#define __PT_PARM3_SYSCALL_REG edx +#define __PT_PARM4_SYSCALL_REG esi +#define __PT_PARM5_SYSCALL_REG edi +#define __PT_PARM6_SYSCALL_REG ebp + #define __PT_RET_REG esp #define __PT_FP_REG ebp #define __PT_RC_REG eax -- 2.30.2