From patchwork Wed Dec 29 04:42:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stafford Horne X-Patchwork-Id: 1573870 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha256 header.s=default header.b=NPBCxQ41; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org (client-ip=8.43.85.97; helo=sourceware.org; envelope-from=libc-alpha-bounces+incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4JNzRJ4MGKz9s0r for ; Wed, 29 Dec 2021 15:47:40 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 4C1313858436 for ; Wed, 29 Dec 2021 04:47:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4C1313858436 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1640753258; bh=qVssAnCqizWMYNetFxK/R2/Ds3SH8AMEJdUOHUOrQNU=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=NPBCxQ41E12TKewYdXKHAl3sNjBYsYExXlfzM9351v8w4VE+zi07gzobOnU2ol1Tb qLQXdLebSpwJkJXjpdO/grdANmk36MN0wCiD4TSY1CXd0BCgiuu0+GnxgKTZj11O4Y /qsdn2XCTV8jIatO5WQ7CILxM4+pY/2Aph1Dg9cc= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by sourceware.org (Postfix) with ESMTPS id 5428D3858439 for ; Wed, 29 Dec 2021 04:43:15 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 5428D3858439 Received: by mail-pf1-x435.google.com with SMTP id c2so17794892pfc.1 for ; Tue, 28 Dec 2021 20:43:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=qVssAnCqizWMYNetFxK/R2/Ds3SH8AMEJdUOHUOrQNU=; b=Nz1JTAwShvTFmENQXMzvxzoOCZTH9nKqkzUMMlfYzKP4XBMvQd7NJGM6U40FVsu++i S6vGYjXpoMF53xhs9BL+JerZD3XH0FBB4tcydM9iKexiITNhR58ct2M8ptDcFWX4iERH 7T+tXUYFRsm1NOFDZo7EM57sA1Nugrs+z0XX1gjc9wqtBx4xTCKtM/O1GpjmeqPlceje qzOIy3tifVKQMju80EwHvys6ShzWByD9h75FoO8nplwgqB33MaAFnLQGjOKg/3Jd9XX8 y9nfYOrswPDfqptX9C38G+626ZSyfjuPG+T/Ca3iYy7/yd43IitJB4xFEkFbBFowAyBN qPnw== X-Gm-Message-State: AOAM530ac8iplXOJSmQypQ6HbQTd9F7h+Du10gIIQAtHq+wiiKZDgpsD GUtuk9cQcAuIiVcBM3wizb9Vxjqua14= X-Google-Smtp-Source: ABdhPJxOalXXpMLbFf+RaXCpdUg1AzIZE4DBd4FW+NsuWAE4cdtx2nvOZlhARl4lungfw09eC0BjAw== X-Received: by 2002:a05:6a00:b8e:b0:4ba:cbf2:516e with SMTP id g14-20020a056a000b8e00b004bacbf2516emr25468216pfj.72.1640752994121; Tue, 28 Dec 2021 20:43:14 -0800 (PST) Received: from localhost ([2409:10:24a0:4700:e8ad:216a:2a9d:6d0c]) by smtp.gmail.com with ESMTPSA id f16sm19525438pfv.135.2021.12.28.20.43.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Dec 2021 20:43:13 -0800 (PST) To: GLIBC patches Subject: [PATCH v4 06/13] or1k: Atomics and Locking primitives Date: Wed, 29 Dec 2021 13:42:44 +0900 Message-Id: <20211229044251.2203653-7-shorne@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211229044251.2203653-1-shorne@gmail.com> References: <20211229044251.2203653-1-shorne@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-10.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Stafford Horne via Libc-alpha From: Stafford Horne Reply-To: Stafford Horne Cc: Openrisc Errors-To: libc-alpha-bounces+incoming=patchwork.ozlabs.org@sourceware.org Sender: "Libc-alpha" --- sysdeps/or1k/atomic-machine.h | 79 +++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 sysdeps/or1k/atomic-machine.h Reviewed-by: Adhemerval Zanella diff --git a/sysdeps/or1k/atomic-machine.h b/sysdeps/or1k/atomic-machine.h new file mode 100644 index 0000000000..1e306ae4ef --- /dev/null +++ b/sysdeps/or1k/atomic-machine.h @@ -0,0 +1,79 @@ +/* Atomic operations. OpenRISC version. + Copyright (C) 2021 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 __OR1K_ATOMIC_H_ +#define __OR1K_ATOMIC_H_ + +#include + +typedef int32_t atomic32_t; +typedef uint32_t uatomic32_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + +#define __HAVE_64B_ATOMICS 0 +#define USE_ATOMIC_COMPILER_BUILTINS 1 +#define ATOMIC_EXCHANGE_USES_CAS 1 + +#define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \ + (abort (), 0) + +#define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \ + (abort (), 0) + +#define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \ + ({ \ + typeof (*mem) __oldval = (oldval); \ + !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \ + model, __ATOMIC_RELAXED); \ + }) + +#define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \ + (abort (), 0) + +#define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \ + (abort (), (__typeof (*mem)) 0) + +#define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \ + (abort (), (__typeof (*mem)) 0) + +#define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \ + ({ \ + typeof (*mem) __oldval = (oldval); \ + __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \ + model, __ATOMIC_RELAXED); \ + __oldval; \ + }) + +#define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \ + (abort (), (__typeof (*mem)) 0) + +#define atomic_compare_and_exchange_bool_acq(mem, new, old) \ + __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \ + mem, new, old, __ATOMIC_ACQUIRE) + +#define atomic_compare_and_exchange_val_acq(mem, new, old) \ + __atomic_val_bysize (__arch_compare_and_exchange_val, int, \ + mem, new, old, __ATOMIC_ACQUIRE) + +#define atomic_full_barrier() ({ asm volatile ("l.msync" ::: "memory"); }) + +#endif /* atomic-machine.h */