From patchwork Fri May 31 15:47:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 1108417 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 45FpnZ29Bxz9s4V for ; Sat, 1 Jun 2019 01:50:42 +1000 (AEST) Received: from localhost ([127.0.0.1]:45446 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hWjnk-0006sp-Ax for incoming@patchwork.ozlabs.org; Fri, 31 May 2019 11:50:40 -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_Mathieu-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 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) 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_Mathieu-Daud=C3=A9?= , Richard Henderson , qemu-arm@nongnu.org, Aleksandar Markovic , Paolo Bonzini , Miroslav Rezanina , =?utf-8?q?Alex_Benn=C3=A9e?= , Aurelien Jarno Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.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-Daudé (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