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[174.21.84.25]) by smtp.gmail.com with ESMTPSA id b10sm14164049pgm.76.2021.02.28.15.24.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Feb 2021 15:24:29 -0800 (PST) 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=8AxLxL20h1MLfwKywJHFZQ2Ei3N+Q0xu9o2GbD1OO+c=; b=VcE8XUVqFoyj/SlnJg8BpfSepscrQDSWNAyA2DjZTKlmg2Sa7X2Q1h69BJCSJn5SGe G2Pq5oTM5a9aF2B/chmJr8PGH4bo8Z8e4elbDu+W3b8tOjlnh3KkdH2rWBC1gW6kMDNx 6TdK/CTOZTy+bUyyPvFH969EE4E3MrQ64QXymNGXxWg3q9TZ/GDTyIBdrdQWPvYATZ0n BG2WXbWLbmzqGE5lYsFAdBtZg9dEQzrzZcw4iEPAqSL0p+iWXXD/UI4RLZ8mJnJWl3ab GYHPanTT8ic5p9KAD3DNMrKqRu0q5cWwKkhw4AgUHFq3UmM0fxIwX5KwhP2DLNjIUdE1 HHgA== 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=8AxLxL20h1MLfwKywJHFZQ2Ei3N+Q0xu9o2GbD1OO+c=; b=K5fMnmqW/lEeFQdlh6Ke9f1GRs3i7h4BnbUC97gxzEZ50kRkeSH9ffp2c6ywBb8AP+ Pt0GyeIkkUhROCLNNm3byLHS9fSzyD9mmA8aPWsfjBnVn3wSqeSvTFCct4o+INO2q/Wp fj5yZu7H0BEhJ+OkeUiexzzuHyPw5YGM9pGvw6p6fAVzFAkKD3wq6wL/7wIUwksAOaKI jGmcrN3R9Mez0hSl+kxb9dZdK2Jl1N9hNwmaCkOs9zb70OWPgsQQR+MxmIdtQT/cOmcn byLSm4/U2w8s5rtNbY5cWjJaZ7ULlh48UwAmCJYlqMGgIBcAegyAai/6fa5CfktUrDNu 0CQw== X-Gm-Message-State: AOAM532BCG2WNRm+oqZBzUI8moqI4EevujvK/UUwnIURZNFZ6sdJWP0+ ZrCzKkA2PZQw4p9QNzDDhjwSstr6pFyJTA== X-Google-Smtp-Source: ABdhPJyDBtn2t1rsh0iA15zTYZ2+pGczm0RGL2jTn+zwPzkXQylZQJMZO/XaLOVfk5E0qhyHWQUuBQ== X-Received: by 2002:a63:4e44:: with SMTP id o4mr11480066pgl.46.1614554669887; Sun, 28 Feb 2021 15:24:29 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 46/50] target/i386: Tidy gen_check_io Date: Sun, 28 Feb 2021 15:23:17 -0800 Message-Id: <20210228232321.322053-47-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210228232321.322053-1-richard.henderson@linaro.org> References: <20210228232321.322053-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42c; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42c.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: cfontana@suse.de Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" 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 --- 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 dc31d8667f..83bcf5cccc 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) } } =20 -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, t= arget_ulong cur_eip, } } if (GUEST(s)) { + target_ulong cur_eip =3D s->base.pc_next - s->cs_base; + target_ulong next_eip =3D s->pc - s->cs_base; + gen_update_cc_op(s); gen_jmp_im(s, cur_eip); - svm_flags |=3D (1 << (4 + ot)); - next_eip =3D s->pc - s->cs_base; - tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0); + if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) { + svm_flags |=3D SVM_IOIO_REP_MASK; + } + svm_flags |=3D 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; } =20 static inline void gen_movs(DisasContext *s, MemOp ot) @@ -2425,11 +2427,6 @@ static void gen_movl_seg_T0(DisasContext *s, X86Seg = seg_reg) } } =20 -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 */ @@ -6477,8 +6474,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) case 0x6d: ot =3D 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,=20 - 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(); } @@ -6496,8 +6494,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) case 0x6f: ot =3D 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(); } @@ -6520,8 +6519,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) ot =3D mo_b_d32(b, dflag); val =3D 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(); } @@ -6538,8 +6538,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) ot =3D mo_b_d32(b, dflag); val =3D 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); =20 if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { @@ -6557,8 +6558,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) case 0xed: ot =3D 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(); } @@ -6574,8 +6576,9 @@ static target_ulong disas_insn(DisasContext *s, CPUSt= ate *cpu) case 0xef: ot =3D 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); =20 if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { --=20 2.25.1