From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34411C433EF for ; Sat, 16 Oct 2021 18:36:14 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D97BB60F59 for ; Sat, 16 Oct 2021 18:36:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D97BB60F59 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:41682 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mboXU-0006sk-TB for qemu-devel@archiver.kernel.org; Sat, 16 Oct 2021 14:36:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41132) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mboDc-0008OF-A8 for qemu-devel@nongnu.org; Sat, 16 Oct 2021 14:15:41 -0400 Received: from mail-pg1-x536.google.com ([2607:f8b0:4864:20::536]:39716) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mboDX-00025D-00 for qemu-devel@nongnu.org; Sat, 16 Oct 2021 14:15:40 -0400 Received: by mail-pg1-x536.google.com with SMTP id g184so11779992pgc.6 for ; Sat, 16 Oct 2021 11:15:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=KY0rIMTsgGM7jXkVqVg+Ek/vwWO39kztj/ovOnDV29c=; b=xGgfLehbgA3QyljRRgsEFJC0b+/lY4eqMCh0nrIogj0j26DxcDficZswbP6OEMnblN O33h4kftHAQy0vG6lADTbdkdKPUz3oVW10RqVT3nP1xy5hNMYW9rjMt2v8sc6z+SJXjr WbCYiOzyVsdHLjm77jqbifpbjlwcNemYffJwbOwSQFdf/wB8sQjKBSoC7Bdy5Ef+wANu rfSxXcc4c1mwABqrZ7QpZLaYSdaaHn2nbyPatakjceTD9KXPklMziOsgMQSk30ChBri+ +ju3QUhcmPnsUUeAGwo10QBOYBR8OyCc4MNuaH9ul8c5Alt2pzQ7qrb4hrq0aAayDobq r9zQ== 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=KY0rIMTsgGM7jXkVqVg+Ek/vwWO39kztj/ovOnDV29c=; b=xiayje2p6n0gZeWdYu31PuAD6Zz9d2CApnHCakWju4xrLG8H7X3JxhW7ppdPrgtQMO cDpigc4YTlifFlq8fl5d9o9ttjhkEKphPL5V842dgHSU5MEuIvPRdC0b49AeEao41VV0 o5i+a7eVO1En8xGgpc2JaypB/RlQ3uycU6nSDepu8D81p054KQoxcqVfNPbKn6iYP4lU QNgZtAgMetYJKzvSuxyNGh6yOt4CftzLFmM/pahZGYaN9W7GpqpZUYB62xilARO98Pqu ooz+Lk1KGzfjCrUlcRgRcTvd4HgM6vbN7z6x3JDy/07btIAMnk22fdVf5Z+tPIKKgIps 7QdQ== X-Gm-Message-State: AOAM531b51q8LhCYAfUGJhDmehwmHCJIVmTzKQNczmO6oYBtVkbQ4/Vp S0y3S3PF+Di9e1/tcj7NqSaF797kQu3IcA== X-Google-Smtp-Source: ABdhPJzzrkh6gQgqiKedXWcG8vwB8rm9H1M16ugKS/WmIF1120iGgKjHP7QYAKD5t0MTj5O4ZLzI0w== X-Received: by 2002:a63:7d0f:: with SMTP id y15mr14963752pgc.446.1634408131486; Sat, 16 Oct 2021 11:15:31 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id ob5sm5075097pjb.2.2021.10.16.11.15.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 Oct 2021 11:15:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 17/24] target/riscv: Remove dead code after exception Date: Sat, 16 Oct 2021 11:15:07 -0700 Message-Id: <20211016181514.3165661-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211016181514.3165661-1-richard.henderson@linaro.org> References: <20211016181514.3165661-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::536; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x536.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Alistair Francis Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We have already set DISAS_NORETURN in generate_exception, which makes the exit_tb unreachable. Reviewed-by: Alistair Francis Signed-off-by: Richard Henderson --- target/riscv/insn_trans/trans_privileged.c.inc | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/target/riscv/insn_trans/trans_privileged.c.inc b/target/riscv/insn_trans/trans_privileged.c.inc index 32312be202..a7afcb15ce 100644 --- a/target/riscv/insn_trans/trans_privileged.c.inc +++ b/target/riscv/insn_trans/trans_privileged.c.inc @@ -22,8 +22,6 @@ static bool trans_ecall(DisasContext *ctx, arg_ecall *a) { /* always generates U-level ECALL, fixed in do_interrupt handler */ generate_exception(ctx, RISCV_EXCP_U_ECALL); - exit_tb(ctx); /* no chaining */ - ctx->base.is_jmp = DISAS_NORETURN; return true; } @@ -60,13 +58,11 @@ static bool trans_ebreak(DisasContext *ctx, arg_ebreak *a) post = opcode_at(&ctx->base, post_addr); } - if (pre == 0x01f01013 && ebreak == 0x00100073 && post == 0x40705013) { + if (pre == 0x01f01013 && ebreak == 0x00100073 && post == 0x40705013) { generate_exception(ctx, RISCV_EXCP_SEMIHOST); } else { generate_exception(ctx, RISCV_EXCP_BREAKPOINT); } - exit_tb(ctx); /* no chaining */ - ctx->base.is_jmp = DISAS_NORETURN; return true; } -- 2.25.1