From patchwork Thu Nov 15 22:36:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alistair Francis X-Patchwork-Id: 10685257 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7435C13BF for ; Thu, 15 Nov 2018 22:50:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5E30D2D502 for ; Thu, 15 Nov 2018 22:50:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 51FAB2D523; Thu, 15 Nov 2018 22:50:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.4 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,RCVD_IN_SBL_CSS autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B24412D502 for ; Thu, 15 Nov 2018 22:50:18 +0000 (UTC) Received: from localhost ([::1]:41183 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNQSn-0003Q8-W1 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 15 Nov 2018 17:50:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48290) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gNQFx-0007WG-R1 for qemu-devel@nongnu.org; Thu, 15 Nov 2018 17:37:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gNQFu-0004rl-L8 for qemu-devel@nongnu.org; Thu, 15 Nov 2018 17:37:01 -0500 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:50663) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gNQFu-0004r4-CE; Thu, 15 Nov 2018 17:36:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1542321418; x=1573857418; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=M3Os+PficGmiG5CxXXF8M8XZqujmgHhFDzxPkKQyzdw=; b=Aq+tpfgXDiaiC9DWG5zE23GLKeLmK29lYeKtIew22Xx3sy09i4K8Ad9D rrgyUm0sOPmHNaReSvEdFczcCv5zQUbuGFGUNGpZpvVWW4RQNe/fykmBw tkpQ0eKbbei23T2SfDi4/Y94LEQwtx72HKfW3l0VcEVglf3YRs/cZbvvm bPufBD4zTImeajW1gaTo1AR8qguE9egYNPfvrzBZ4zpHU4Bst9hKaAoZe MPV90bDhiCY2G+fI9/VQ5qCBlmJglM96pvWE64tdNM59yz9rmPuTpZyFE iPhIuHW+AX3Jv8FzPzn5qmRRdcJs5dNtAUt7s/IWG/VUlOWWJTfLmiH9E A==; X-IronPort-AV: E=Sophos;i="5.56,237,1539619200"; d="scan'208";a="95523418" Received: from mail-cys01nam02lp0051.outbound.protection.outlook.com (HELO NAM02-CY1-obe.outbound.protection.outlook.com) ([207.46.163.51]) by ob1.hgst.iphmx.com with ESMTP; 16 Nov 2018 06:36:47 +0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sharedspace.onmicrosoft.com; s=selector1-wdc-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=NusdP1MkqcdAmhRNwrMtEizWF/SVZWg4LovuJ7KQj74=; b=ectHJc6Pec42+9g036cM9PQl3OW+g6LIeueSgW42/f+0whkcXasH45VTfYjgTDpBsqvOpGAEw41pMclEO6iTw2iuspyHZZfWmxFx4uw2EIryk5yfeCahj2QLwWASc3xp/c3f6p1/of/QpsyajaHzVbScd1Z+/rVjEYShMoBCe2I= Received: from MWHPR04MB0401.namprd04.prod.outlook.com (10.173.48.18) by MWHPR04MB0865.namprd04.prod.outlook.com (10.172.169.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1294.36; Thu, 15 Nov 2018 22:36:46 +0000 Received: from MWHPR04MB0401.namprd04.prod.outlook.com ([fe80::4853:2cc0:27bc:a62e]) by MWHPR04MB0401.namprd04.prod.outlook.com ([fe80::4853:2cc0:27bc:a62e%12]) with mapi id 15.20.1294.045; Thu, 15 Nov 2018 22:36:46 +0000 From: Alistair Francis To: "qemu-devel@nongnu.org" , "qemu-riscv@nongnu.org" Thread-Topic: [RFC v1 19/23] riscv: tcg-target: Add the prologue generation Thread-Index: AQHUfTOwYRo8kNCrWkivyVuZpicg4g== Date: Thu, 15 Nov 2018 22:36:46 +0000 Message-ID: <526c9ffdb23b75e96508703b9c9e3bc95cfac939.1542321076.git.alistair.francis@wdc.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.19.1 x-clientproxiedby: BYAPR07CA0076.namprd07.prod.outlook.com (2603:10b6:a03:12b::17) To MWHPR04MB0401.namprd04.prod.outlook.com (2603:10b6:300:70::18) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alistair.Francis@wdc.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [199.255.44.250] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; MWHPR04MB0865; 6:oTltrtX4O1Hb82AI1AI64OonPGSRzTNdaApfZCtaRpnIZN9n27cT8EjPkofVe1O0m7v+o/m4VjCjf0NRKWvVkAwJM7zBvmCBCdi2qG5pGld3e4zudrq1C+W1XWnQYxdrxu1spQ1bH6XVkuIOn+MmUGKJsZPjXXdeSZaOOcz/eWUfhMpBx7c8Ve1wsheVOcvh4FSZIvzfn1zQ5uqtQpBJQPOFji2vqBWeNhj7KwXIGivRRYJwrhvk5iXuMnRmnD0KBTD5cFZChFX09T4TbECMQXdxIDpS7Xg1bADOuGuQ0McMuCfsUC9MaP7r5y+foFjCHAd8rC5AuKYvu+b0QrtyNwDMP3NlgvRrdk81CkkMtwpwNOHEvjlRGSVmtSuUq53fO+6Li6w4BbGHVyXMuuI+N6ko3lq7iU+hxdzS+9vQq5eArWaW3jMXFJ3dT0xiarbXTN8RpQlSJwOrlEdClGRZQg==; 5:cXUVH+h7dLg7rb+pP4wQcWPk/oSjeGoHegLSLZTtV7UZ7t6PAvxFLKi7qPewbQU9h/QLLr9KNEMRILA+AefEAQ2mUB5X6vrmrN+fuLJC8RkX5roZKO603SjXMVJdy5DMTD0a/fmMFJKrFzugMh9aKDBDsA6t181yWQjcOmFvSBc=; 7:vpMxU6doX5KL+KDD+EYuA17iJoXx2VqH+cW8Q+PJRkR/+zJXch/XDsMRb2wLelh/A3+ebbqC6+fgBpxG1hzEn6Q/9SioFZl23CKSeLBjWxz4BwunIPCrxh96LwUWzjqWs1EpHbpqChL+bTYJoNPP9Q== x-ms-office365-filtering-correlation-id: 4347de98-232f-4fe6-7b1d-08d64b4ad2f7 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390098)(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020); SRVR:MWHPR04MB0865; x-ms-traffictypediagnostic: MWHPR04MB0865: wdcipoutbound: EOP-TRUE x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(10201501046)(3231415)(944501410)(52105112)(93006095)(93001095)(3002001)(6055026)(148016)(149066)(150057)(6041310)(20161123558120)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123562045)(20161123564045)(201708071742011)(7699051)(76991095); SRVR:MWHPR04MB0865; BCL:0; PCL:0; RULEID:; SRVR:MWHPR04MB0865; x-forefront-prvs: 08572BD77F x-forefront-antispam-report: SFV:NSPM; SFS:(10019020)(136003)(366004)(376002)(39860400002)(346002)(396003)(189003)(199004)(81156014)(81166006)(8676002)(118296001)(8936002)(256004)(6486002)(25786009)(86362001)(2501003)(72206003)(105586002)(106356001)(2906002)(97736004)(478600001)(66066001)(186003)(99286004)(54906003)(386003)(11346002)(2616005)(446003)(36756003)(2900100001)(486006)(6512007)(476003)(6506007)(26005)(39060400002)(102836004)(5660300001)(305945005)(50226002)(71190400001)(71200400001)(110136005)(6436002)(68736007)(53936002)(3846002)(316002)(4326008)(6116002)(7736002)(14454004)(44832011)(52116002)(76176011); DIR:OUT; SFP:1102; SCL:1; SRVR:MWHPR04MB0865; H:MWHPR04MB0401.namprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; x-microsoft-antispam-message-info: 3nCis0bm4x8c6WEn6xCkCDTp3P33Mo6LIISjB8fE5gknOR8qe5pX8OWaCe5NXz6YA3TNCiGRFBHeyNdaI/j7JeNVzbadn2nd1Orq6BJ4/QgBBnXgGWJYm9nPpLjnxj8hsRwWgg57saXKNZYCz8mDhC/OX0H0J7WX0nElyFRTBwZVXFddUxFySKShODQfsoAcwGsoTfZ774z7uFNggtvANo5C+N7bTpzGi5icPo7hq+i7nquQH4SkKjfOEnuWIncrngVCKA9XcdZ1CWtnIHgq8uEB/iaoh9MnftOH5bFySAyy74I+BuUkRbt8oKwnhMZbagkCjk4bQ+U6OBfpaPBENfC0KObu4UPnihmvH8htIjs= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4347de98-232f-4fe6-7b1d-08d64b4ad2f7 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Nov 2018 22:36:46.1733 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR04MB0865 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 216.71.153.144 Subject: [Qemu-devel] [RFC v1 19/23] riscv: tcg-target: Add the prologue generation 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: "alistair23@gmail.com" , Alistair Francis Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Alistair Francis Signed-off-by: Michael Clark Reviewed-by: Richard Henderson --- tcg/riscv/tcg-target.inc.c | 66 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/tcg/riscv/tcg-target.inc.c b/tcg/riscv/tcg-target.inc.c index bf3b04f7dc..4b8f65f367 100644 --- a/tcg/riscv/tcg-target.inc.c +++ b/tcg/riscv/tcg-target.inc.c @@ -1575,6 +1575,72 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op) } } +static const int tcg_target_callee_save_regs[] = { + TCG_REG_S0, /* used for the global env (TCG_AREG0) */ + TCG_REG_S1, + TCG_REG_S2, + TCG_REG_S3, + TCG_REG_S4, + TCG_REG_S5, + TCG_REG_S6, + TCG_REG_S7, + TCG_REG_S8, + TCG_REG_S9, + TCG_REG_S10, + TCG_REG_S11, + TCG_REG_RA, /* should be last for ABI compliance */ +}; + +/* Stack frame parameters. */ +#define REG_SIZE (TCG_TARGET_REG_BITS / 8) +#define SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * REG_SIZE) +#define TEMP_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long)) +#define FRAME_SIZE ((TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE + SAVE_SIZE \ + + TCG_TARGET_STACK_ALIGN - 1) \ + & -TCG_TARGET_STACK_ALIGN) +#define SAVE_OFS (TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE) + +/* We're expecting to be able to use an immediate for frame allocation. */ +QEMU_BUILD_BUG_ON(FRAME_SIZE > 0x7ff); + +/* Generate global QEMU prologue and epilogue code */ +static void tcg_target_qemu_prologue(TCGContext *s) +{ + int i; + + tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE, TEMP_SIZE); + + /* TB prologue */ + tcg_out_opc_imm(s, OPC_ADDI, TCG_REG_SP, TCG_REG_SP, -FRAME_SIZE); + for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { + tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], + TCG_REG_SP, SAVE_OFS + i * REG_SIZE); + } + +#if !defined(CONFIG_SOFTMMU) + tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); + tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); +#endif + + /* Call generated code */ + tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); + tcg_out_opc_imm(s, OPC_JALR, TCG_REG_ZERO, tcg_target_call_iarg_regs[1], 0); + + /* Return path for goto_ptr. Set return value to 0 */ + s->code_gen_epilogue = s->code_ptr; + tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_A0, TCG_REG_ZERO); + + /* TB epilogue */ + tb_ret_addr = s->code_ptr; + for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { + tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], + TCG_REG_SP, SAVE_OFS + i * REG_SIZE); + } + + tcg_out_opc_imm(s, OPC_ADDI, TCG_REG_SP, TCG_REG_SP, FRAME_SIZE); + tcg_out_opc_imm(s, OPC_JALR, TCG_REG_ZERO, TCG_REG_RA, 0); +} + void tb_target_set_jmp_target(uintptr_t tc_ptr, uintptr_t jmp_addr, uintptr_t addr) {