From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id IMX/Ke4he2CaOgAAWB0awg (envelope-from ) for ; Sat, 17 Apr 2021 13:59:10 -0400 Received: by simark.ca (Postfix, from userid 112) id 9CB991F104; Sat, 17 Apr 2021 13:59:10 -0400 (EDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on simark.ca X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 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 (2048 bits) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 00C781E813 for ; Sat, 17 Apr 2021 13:59:07 -0400 (EDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 8E0AA3898505; Sat, 17 Apr 2021 17:59:07 +0000 (GMT) Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by sourceware.org (Postfix) with ESMTPS id 94EAD389850E for ; Sat, 17 Apr 2021 17:59:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 94EAD389850E Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=jimw@sifive.com Received: by mail-pj1-x102c.google.com with SMTP id j21-20020a17090ae615b02901505b998b45so2796211pjy.0 for ; Sat, 17 Apr 2021 10:59:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=huw2GLePOBjdaPVl0cfCOb/OGmCe5E5XYJrkfYnG8ZA=; b=fBCTBakTK2+DZSG7Q7XYDORY/yz2uDegYIz7Zg20mHOj+KhNqJh5spt5JZ7y7zRmme ohP4J1O1mtziRNhP0Bd6UWpor+e+hpC0p9rOy5bW/fqbeFgHWwnlotq4JqZu+XPZ93zM 9gzP0LtFqPxWw8PBrrmGyqOpgQ6FaYjBft9A5N6djSKveiqyeXa/RK+hIXNBsQF86AXP iNgC59w0Br55sKZCr7rFC/HDOEZs/stXHQ6NO3905tegOuWTopg3n2i+qUYhHFCqLrba beMleUt2NxUCu2mf0UoPV1uivhiZlmXRbLa41hKTLQrqrTiaWD49YepyAYzVPa/wTLMW eZZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=huw2GLePOBjdaPVl0cfCOb/OGmCe5E5XYJrkfYnG8ZA=; b=ud32F10eOqzZ9dJTBob7ueRyfi2rq7PiJmI38O+QOESNGFcl+fcdnA+Z7/JxK4E36x u8/iLQRD2UQID4ptlO86AWmXjG25EfopWzMyse32LTS0LxoMPpgHPyoinEFxijuEU9kI PF/DbHrycD9ihzUiBBP164MnUDYIetNm6d8eH15iEHXAnDvRYvzg3FsRDIbTjva6eB3y njvcre8YEfcgLumSvrIvWkZosKkuOERG8KzAVqLU3dI75VMSRnaC2kaKoJ8ubDHo9xR4 IZolzbq0MHETYeHpKhg9AS3vsNv2ZjVmSLANW9CsZ4lTUqnhceHONlAWpe0BoeDsjp33 AebQ== X-Gm-Message-State: AOAM530fd05M2H79S3saQ9/sZsBux2a0RQCByVrgVXzaLgoub1Cp33RG nKIo+Hqa9rpP8/W/Kor0n/UfstqGyDSLoA== X-Google-Smtp-Source: ABdhPJyUgORIZTEWYIYopv8pnt2I6tdXPiLcX6FvJ0mScRHOZRxjJ9iMGWictNm9PzqPCPlS+dUUEQ== X-Received: by 2002:a17:90b:e0b:: with SMTP id ge11mr16142077pjb.127.1618682342461; Sat, 17 Apr 2021 10:59:02 -0700 (PDT) Received: from rohan.hsd1.ca.comcast.net ([2601:646:c180:b150:1820:3ed4:975:3fbe]) by smtp.gmail.com with ESMTPSA id u4sm5030705pfk.56.2021.04.17.10.59.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Apr 2021 10:59:02 -0700 (PDT) From: Jim Wilson To: gdb-patches@sourceware.org Subject: [PATCH 05/24] RISC-V sim: Fix stack pointer alignment. Date: Sat, 17 Apr 2021 10:58:12 -0700 Message-Id: <20210417175831.16413-6-jimw@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210417175831.16413-1-jimw@sifive.com> References: <20210417175831.16413-1-jimw@sifive.com> X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kuan-Lin Chen Errors-To: gdb-patches-bounces@sourceware.org Sender: "Gdb-patches" From: Kuan-Lin Chen Initialize stack pointer to 16-byte aligned in both rv32 and rv64 as per the ABI. sim/riscv/ * sim-main.c (initialize_env): Call align_down when setting sp. --- sim/riscv/sim-main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sim/riscv/sim-main.c b/sim/riscv/sim-main.c index b6ae060..1b9fb89 100644 --- a/sim/riscv/sim-main.c +++ b/sim/riscv/sim-main.c @@ -1210,6 +1210,8 @@ initialize_env (SIM_DESC sd, const char * const *argv, const char * const *env) sp = sp_flat - ((argc + 1 + envc + 1) * sizeof (address_word)); /* Then the argc. */ sp -= sizeof (unsigned_word); + /* Synchronize sp alignment with GCC's STACK_BOUNDARY. */ + sp = align_down (sp, 16); /* Set up the regs the libgloss crt0 expects. */ cpu->a0 = argc; -- 2.7.4