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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 ADBDFC28CC2 for ; Fri, 31 May 2019 15:51:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8ACD32687B for ; Fri, 31 May 2019 15:51:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8ACD32687B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:45463 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWjoM-0007WL-RN for qemu-devel@archiver.kernel.org; Fri, 31 May 2019 11:51:18 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60417) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWjla-0005uc-Sb for qemu-devel@nongnu.org; Fri, 31 May 2019 11:48:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hWjlZ-0003Ms-RB for qemu-devel@nongnu.org; Fri, 31 May 2019 11:48:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55418) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hWjlX-0002Sl-7B; Fri, 31 May 2019 11:48:23 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 90E0F30C1FF6; Fri, 31 May 2019 15:47:49 +0000 (UTC) Received: from x1w.redhat.com (ovpn-204-73.brq.redhat.com [10.40.204.73]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D77C41001E6F; Fri, 31 May 2019 15:47:38 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Date: Fri, 31 May 2019 17:47:33 +0200 Message-Id: <20190531154735.20809-1-philmd@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Fri, 31 May 2019 15:47:58 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC PATCH 0/2] target: Build with CONFIG_SEMIHOSTING disabled X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Aleksandar Rikalo , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , qemu-arm@nongnu.org, Aleksandar Markovic , Paolo Bonzini , Miroslav Rezanina , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Aurelien Jarno Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Amusingly Miroslav and myself hit this issue at the same time. Currently there is no way to pass a CONFIG_X to sources in target/, except via a Makefile rule (and filling with stubs). Paolo says this is on purpose, CONFIG_X selectors are meant for devices and we try to avoid having config-devices.mak in config-target.h. Some know (arch-specific) limitations are: - MIPS ITU is accessed by coprocessor instr (ISA feature) - MIPS timer is accessed by coprocessor instr (ISA feature) - MIPS semihosting (ISA feature?) - ARM semihosting (ISA feature?) - ARMv7 NVIC (device) This series attempt to fix this the most trivial way, adding stubs for unreachable code. Philippe Mathieu-Daud=C3=A9 (2): target/arm: Add stubs to build with CONFIG_SEMIHOSTING disabled target/mips: Add stubs to build with CONFIG_SEMIHOSTING disabled target/arm/Makefile.objs | 3 ++- target/arm/arm-semi-stubs.c | 21 +++++++++++++++++++++ target/mips/Makefile.objs | 3 ++- target/mips/mips-semi-stubs.c | 23 +++++++++++++++++++++++ 4 files changed, 48 insertions(+), 2 deletions(-) create mode 100644 target/arm/arm-semi-stubs.c create mode 100644 target/mips/mips-semi-stubs.c --=20 2.20.1