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 X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0DBDC433B4 for ; Wed, 19 May 2021 19:11:59 +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 8B78361355 for ; Wed, 19 May 2021 19:11:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B78361355 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48180 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljRbq-0005zk-Lm for qemu-devel@archiver.kernel.org; Wed, 19 May 2021 15:11:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53350) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljR1o-00038s-ND for qemu-devel@nongnu.org; Wed, 19 May 2021 14:34:44 -0400 Received: from mail-ot1-x334.google.com ([2607:f8b0:4864:20::334]:37449) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ljR1j-0007S6-Im for qemu-devel@nongnu.org; Wed, 19 May 2021 14:34:44 -0400 Received: by mail-ot1-x334.google.com with SMTP id v19-20020a0568301413b0290304f00e3d88so12628720otp.4 for ; Wed, 19 May 2021 11:34:39 -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=qnZV0wX95VAsWpNoAvBiFixvkFrekitqEJ+f9enV/uM=; b=tzs6fR9HuT5Ot6KIndiOlsq580qc4nj8kZdx4WwfaMk1u0obzIpr5uFCzCqTrmUfgZ /1AMB/5gbL4qcmfT71UL+o8uNor6i26dPgyWEr8gk7kyOyud/K9woHqCDdWba3ie/53V aaPgZi2CcfSMd0gsb2WdnmpLBPpNnHLHnP2GZbAY2AGlLzHGLG2rd1VOrdZ9YM6RunsD o+bEgJ+mEepfFGDnl9qPTrUZ1T7IMyDJeNBvYBBdlXGjDbuC1Z1b+jJT314zWw2kyBQE 8s8+Tp2ByvymprlJOGX8d3OzD89AFdC4UkCGxnjLuhHVwRLDvvD3RHc9X+dxYUpTrLQB ZTRw== 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:mime-version:content-transfer-encoding; bh=qnZV0wX95VAsWpNoAvBiFixvkFrekitqEJ+f9enV/uM=; b=nl02A+9xRMZ1LTygK+F/XTdn0JBer7iHAw65NzNKrkg2EfS7Ll70hYW+Oq0WMWWKoJ rnJTH6YjXZaQpQDBDChhMhnsyEw+VZYbB0ZFilcfYeSt3+NvZteoqGC9KhuYrfE0a5O8 NPPqI6a2qVXxcy+s99Ye6T6d+uKGM87PxkyqyuxX5v28BxPUcF5BansBNf2ZrF8cYmBR W5N2IptMJu6EkLIAi7EIM4Vo3OcF1k/1qRfJTs7I6nWsR112x4nberLMfZycHLLX4P8P QnqzHzV+XTXRZXqCWoWOfTpKMrHogRW1zo53VgYixBAZ+0c/ilNdeNqnF1YnfHBLZ9+e WQTA== X-Gm-Message-State: AOAM531X3ju7lxSdiNHql1dBs5BaDPxxQE6NUOVno7fUzDjLnBeLgsIX MaNKiaPHFaYYxfZkYUY259fwUL5MFaBJCPuc X-Google-Smtp-Source: ABdhPJzTSca3sCgJjQ/pkEWghhh0ClTevByhFzdGz1woCib8ChL0SzeGOaU9W1m+H79UikUVtnEDOQ== X-Received: by 2002:a05:6830:33c7:: with SMTP id q7mr666332ott.308.1621449278475; Wed, 19 May 2021 11:34:38 -0700 (PDT) Received: from localhost.localdomain ([45.235.253.15]) by smtp.gmail.com with ESMTPSA id i9sm38642oog.17.2021.05.19.11.34.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 May 2021 11:34:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 46/50] target/i386: Tidy gen_check_io Date: Wed, 19 May 2021 13:30:46 -0500 Message-Id: <20210519183050.875453-47-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210519183050.875453-1-richard.henderson@linaro.org> References: <20210519183050.875453-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::334; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x334.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: peter.maydell@linaro.org, Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Get cur_eip from DisasContext. Do not require the caller to use svm_is_rep; get prefix from DisasContext. Use the proper symbolic constants for SVM_IOIO_*. While we're touching all call sites, return bool in preparation for gen_check_io raising #GP. Signed-off-by: Richard Henderson Reviewed-by: Paolo Bonzini Message-Id: <20210514151342.384376-47-richard.henderson@linaro.org> --- target/i386/tcg/translate.c | 57 +++++++++++++++++++------------------ 1 file changed, 30 insertions(+), 27 deletions(-) diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index ef0ba822e1..2282c3598c 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -674,13 +674,10 @@ static void gen_helper_out_func(MemOp ot, TCGv_i32 v, TCGv_i32 n) } } -static void gen_check_io(DisasContext *s, MemOp ot, target_ulong cur_eip, - uint32_t svm_flags) +static bool gen_check_io(DisasContext *s, MemOp ot, uint32_t svm_flags) { - target_ulong next_eip; - + tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0); if (PE(s) && (CPL(s) > IOPL(s) || VM86(s))) { - tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0); switch (ot) { case MO_8: gen_helper_check_iob(cpu_env, s->tmp2_i32); @@ -696,15 +693,20 @@ static void gen_check_io(DisasContext *s, MemOp ot, target_ulong cur_eip, } } if (GUEST(s)) { + target_ulong cur_eip = s->base.pc_next - s->cs_base; + target_ulong next_eip = s->pc - s->cs_base; + gen_update_cc_op(s); gen_jmp_im(s, cur_eip); - svm_flags |= (1 << (4 + ot)); - next_eip = s->pc - s->cs_base; - tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0); + if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) { + svm_flags |= SVM_IOIO_REP_MASK; + } + svm_flags |= 1 << (SVM_IOIO_SIZE_SHIFT + ot); gen_helper_svm_check_io(cpu_env, s->tmp2_i32, - tcg_const_i32(svm_flags), - tcg_const_i32(next_eip - cur_eip)); + tcg_constant_i32(svm_flags), + tcg_constant_i32(next_eip - cur_eip)); } + return true; } static inline void gen_movs(DisasContext *s, MemOp ot) @@ -2425,11 +2427,6 @@ static void gen_movl_seg_T0(DisasContext *s, X86Seg seg_reg) } } -static inline int svm_is_rep(int prefixes) -{ - return ((prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) ? 8 : 0); -} - static void gen_svm_check_intercept(DisasContext *s, uint32_t type) { /* no SVM activated; fast case */ @@ -6483,8 +6480,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) case 0x6d: ot = mo_b_d32(b, dflag); tcg_gen_ext16u_tl(s->T0, cpu_regs[R_EDX]); - gen_check_io(s, ot, pc_start - s->cs_base, - SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) | 4); + if (!gen_check_io(s, ot, SVM_IOIO_TYPE_MASK | SVM_IOIO_STR_MASK)) { + break; + } if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { gen_io_start(); } @@ -6502,8 +6500,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) case 0x6f: ot = mo_b_d32(b, dflag); tcg_gen_ext16u_tl(s->T0, cpu_regs[R_EDX]); - gen_check_io(s, ot, pc_start - s->cs_base, - svm_is_rep(prefixes) | 4); + if (!gen_check_io(s, ot, SVM_IOIO_STR_MASK)) { + break; + } if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { gen_io_start(); } @@ -6526,8 +6525,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) ot = mo_b_d32(b, dflag); val = x86_ldub_code(env, s); tcg_gen_movi_tl(s->T0, val); - gen_check_io(s, ot, pc_start - s->cs_base, - SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes)); + if (!gen_check_io(s, ot, SVM_IOIO_TYPE_MASK)) { + break; + } if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { gen_io_start(); } @@ -6544,8 +6544,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) ot = mo_b_d32(b, dflag); val = x86_ldub_code(env, s); tcg_gen_movi_tl(s->T0, val); - gen_check_io(s, ot, pc_start - s->cs_base, - svm_is_rep(prefixes)); + if (!gen_check_io(s, ot, 0)) { + break; + } gen_op_mov_v_reg(s, ot, s->T1, R_EAX); if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { @@ -6563,8 +6564,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) case 0xed: ot = mo_b_d32(b, dflag); tcg_gen_ext16u_tl(s->T0, cpu_regs[R_EDX]); - gen_check_io(s, ot, pc_start - s->cs_base, - SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes)); + if (!gen_check_io(s, ot, SVM_IOIO_TYPE_MASK)) { + break; + } if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { gen_io_start(); } @@ -6580,8 +6582,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu) case 0xef: ot = mo_b_d32(b, dflag); tcg_gen_ext16u_tl(s->T0, cpu_regs[R_EDX]); - gen_check_io(s, ot, pc_start - s->cs_base, - svm_is_rep(prefixes)); + if (!gen_check_io(s, ot, 0)) { + break; + } gen_op_mov_v_reg(s, ot, s->T1, R_EAX); if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { -- 2.25.1