From patchwork Sat Dec 1 03:10:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zong Li X-Patchwork-Id: 30499 Received: (qmail 125153 invoked by alias); 1 Dec 2018 03:13:38 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 125050 invoked by uid 89); 1 Dec 2018 03:13:37 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.4 required=5.0 tests=BAYES_00, FREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_NUMSUBJECT, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=HX-Received:d148, spurious X-HELO: mail-pf1-f193.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6oLyGocOqpuJOTE6DRH+rJdeucvmMYKXbKXIUnxFV14=; b=bynnv/d8n9AHh9Qdl5RILPvIIJ/opViiRvCM6iBV2ym2RWPZRUsZi+jv5fSTeZ1mny J2x3VfybmaeG8G2TdBDoxxr3YqQvB/FXQ0DfRWNLHEhnaAgB7MmD89nkEhTuDJAR6XKv pr/ZjwjAxw/84GtF3N+VXEw1NWTYvzT3dLu+ue6EObJrXlnS3LrL22H5Jwff3Gv5yIML /BEnCM6wr5wP5tDafzEtUyz78REFH9C3TGjL85nCkmHu0s+rG5eTBPUUCrVhJ6pYi8nP H64hvWwLz+6F/j18vCUDeZJj1l9Wo/SgiVUTjnASTFGxBZCFBCRW73VOSuZjbV2ye3uP 74TA== Return-Path: From: Zong Li To: joseph@codesourcery.com, palmer@dabbelt.com, darius@bluespec.com, andrew@sifive.com, dj@redhat.com, libc-alpha@sourceware.org Cc: zong@andestech.com, Zong Li Subject: [PATCH v4 09/10] RISC-V: Fix llrint and llround missing exceptions on RV32 Date: Sat, 1 Dec 2018 11:10:52 +0800 Message-Id: In-Reply-To: References: Similar to the recent fix for MIPS, ARM and S/390, RV32 is missing correct exception on overflow from llrint and llround functions because cast from floating-point types to long long do not result in correct exceptions on overflow. 2018-11-29 Zong Li * sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h: New file. --- ChangeLog | 1 + sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h | 38 ++++++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h diff --git a/ChangeLog b/ChangeLog index 9c9d2f9..ee74249 100644 --- a/ChangeLog +++ b/ChangeLog @@ -42,6 +42,7 @@ * sysdeps/unix/sysv/linux/riscv/configure.ac: Likewise. * sysdeps/unix/sysv/linux/riscv/shlib-versions: Likewise. * sysdeps/riscv/preconfigure: Likewise. + * sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h: New file. 2018-11-28 Florian Weimer diff --git a/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h b/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h new file mode 100644 index 0000000..6b34a84 --- /dev/null +++ b/sysdeps/riscv/rv32/fix-fp-int-convert-overflow.h @@ -0,0 +1,38 @@ +/* Fix for conversion of floating point to integer overflow. ARM version. + Copyright (C) 2015-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef FIX_FP_INT_CONVERT_OVERFLOW_H +#define FIX_FP_INT_CONVERT_OVERFLOW_H 1 + +/* As of GCC 5, the generic libgcc2.c conversions from floating point + to long long may not raise the correct exceptions on overflow (and + may raise spurious "inexact" exceptions even in non-overflow cases, + see ). */ +#define FIX_FLT_LONG_CONVERT_OVERFLOW 0 +#define FIX_FLT_LLONG_CONVERT_OVERFLOW 1 + +#define FIX_DBL_LONG_CONVERT_OVERFLOW 0 +#define FIX_DBL_LLONG_CONVERT_OVERFLOW 1 + +#define FIX_LDBL_LONG_CONVERT_OVERFLOW 0 +#define FIX_LDBL_LLONG_CONVERT_OVERFLOW 0 + +#define FIX_FLT128_LONG_CONVERT_OVERFLOW 0 +#define FIX_FLT128_LLONG_CONVERT_OVERFLOW 0 + +#endif /* fix-fp-int-convert-overflow.h */