From patchwork Tue Aug 24 14:27:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Fernando Fujita Pires X-Patchwork-Id: 1520313 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) 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=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4GvBL83F3cz9ssP for ; Wed, 25 Aug 2021 00:28:32 +1000 (AEST) Received: from localhost ([::1]:35966 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mIXPh-0005de-Ou for incoming@patchwork.ozlabs.org; Tue, 24 Aug 2021 10:28:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54420) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mIXOv-0005bO-W7; Tue, 24 Aug 2021 10:27:42 -0400 Received: from [201.28.113.2] (port=31455 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mIXOt-0007Yt-VJ; Tue, 24 Aug 2021 10:27:41 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Tue, 24 Aug 2021 11:27:36 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by power9a (Postfix) with ESMTP id D9E328010FC; Tue, 24 Aug 2021 11:27:35 -0300 (-03) From: Luis Pires To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH 00/19] target/ppc: DFP instructions using decodetree Date: Tue, 24 Aug 2021 11:27:11 -0300 Message-Id: <20210824142730.102421-1-luis.pires@eldorado.org.br> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-OriginalArrivalTime: 24 Aug 2021 14:27:36.0073 (UTC) FILETIME=[2F1F1F90:01D798F4] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=luis.pires@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Luis Pires , richard.henderson@linaro.org, groug@kaod.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This series moves all existing DFP instructions to decodetree and implements the 2 new instructions (dcffixqq and dctfixqq) from Power ISA 3.1. In order to implement dcffixqq, divu128/divs128 were modified to support 128-bit quotients (previously, they were limited to 64-bit quotients), along with adjustments being made to its existing callers. libdecnumber was also expanded to allow creating decimal numbers from 128-bit integers. Similarly, for dctfixqq, mulu128 (host-utils) and decNumberIntegralToInt128 (libdecnumber) were introduced to support 128-bit integers. The remaining patches of this series move all of the already existing DFP instructions to decodetree, and end up removing dfp-ops.c.inc, which is no longer needed. NOTE 1: The previous, non-decodetree code, was updating ctx->nip for all the DFP instructions. I've removed that, but it would be great if someone could confirm that updating nip really wasn't necessary. NOTE 2: Some arithmetic function support for 128-bit integers was added, for now, still using 64-bit pairs. In the near future, I think we should modify all of them to use Int128 (and introduce UInt128). But that should be done in another patch series. Based-on: 20210823150235.35759-1-luis.pires@eldorado.org.br (target/ppc: fix setting of CR flags in bcdcfsq) --- Luis Pires Instituto de Pesquisas ELDORADO Aviso Legal - Disclaimer Bruno Larsen (1): target/ppc: Move REQUIRE_ALTIVEC/VECTOR to translate.c Fernando Valle (1): target/ppc: Introduce REQUIRE_FPU Luis Pires (17): host-utils: Fix overflow detection in divu128() host-utils: move abs64() to host-utils host-utils: move checks out of divu128/divs128 host-utils: add 128-bit quotient support to divu128/divs128 host-utils: add unit tests for divu128/divs128 libdecnumber: introduce decNumberFrom[U]Int128 target/ppc: Implement DCFFIXQQ host-utils: Introduce mulu128 libdecnumber: Introduce decNumberIntegralToInt128 target/ppc: Implement DCTFIXQQ target/ppc: Move dtstdc[q]/dtstdg[q] to decodetree target/ppc: Move d{add,sub,mul,div,iex}[q] to decodetree target/ppc: Move dcmp{u,o}[q],dts{tex,tsf,tsfi}[q] to decodetree target/ppc: Move dquai[q], drint{x,n}[q] to decodetree target/ppc: Move dqua[q], drrnd[q] to decodetree target/ppc: Move dct{dp,qpq},dr{sp,dpq},dc{f,t}fix[q],dxex[q] to decodetree target/ppc: Move ddedpd[q],denbcd[q],dscli[q],dscri[q] to decodetree hw/i386/kvm/i8254.c | 5 - include/hw/clock.h | 7 +- include/libdecnumber/decNumber.h | 4 + include/libdecnumber/decNumberLocal.h | 2 +- include/qemu/host-utils.h | 86 +++-- libdecnumber/decContext.c | 7 +- libdecnumber/decNumber.c | 130 ++++++++ target/ppc/dfp_helper.c | 168 +++++++--- target/ppc/helper.h | 106 ++++--- target/ppc/insn32.decode | 171 ++++++++++ target/ppc/int_helper.c | 23 +- target/ppc/translate.c | 25 +- target/ppc/translate/dfp-impl.c.inc | 419 ++++++++++++------------- target/ppc/translate/dfp-ops.c.inc | 165 ---------- target/ppc/translate/vector-impl.c.inc | 10 +- tests/unit/meson.build | 1 + tests/unit/test-div128.c | 185 +++++++++++ util/host-utils.c | 137 +++++--- 18 files changed, 1072 insertions(+), 579 deletions(-) delete mode 100644 target/ppc/translate/dfp-ops.c.inc create mode 100644 tests/unit/test-div128.c