From nobody Fri Dec 19 20:11:22 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; dkim=fail spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1493753110800361.28789447504835; Tue, 2 May 2017 12:25:10 -0700 (PDT) Received: from localhost ([::1]:33283 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d5dQ5-0003Lf-Gk for importer@patchew.org; Tue, 02 May 2017 15:25:09 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59445) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d5dOI-0001kL-FW for qemu-devel@nongnu.org; Tue, 02 May 2017 15:23:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d5dOH-0001am-AQ for qemu-devel@nongnu.org; Tue, 02 May 2017 15:23:18 -0400 Received: from mail-qk0-x244.google.com ([2607:f8b0:400d:c09::244]:35803) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1d5dOH-0001aO-6T for qemu-devel@nongnu.org; Tue, 02 May 2017 15:23:17 -0400 Received: by mail-qk0-x244.google.com with SMTP id u68so7538998qkd.2 for ; Tue, 02 May 2017 12:23:17 -0700 (PDT) Received: from bigtime.twiddle.net.com ([2602:47:d954:1500:5e51:4fff:fe40:9c64]) by smtp.gmail.com with ESMTPSA id d65sm10664657qkc.53.2017.05.02.12.23.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 May 2017 12:23:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UqF5hJIO5G6pT2YlF1JFUFz4qbZwSVm32VIL7xLd+HA=; b=UK95O3Ze1ow9YJdpnzzkNHiAezd8eSI+yKee7hOe9I5nXoTNdY5mSKW1Ypelmgf/2U nV3R4jvpqVxtX6eeGma5Ifz7x1rl9Adrld48HazlDpcsiURsl+Eg35HSeEGkLmCuyFYF +Fs0NrpZMgI9a9D86W+6wMZ2qD9WhFAdD+URWdMIdG7GC7phAUVx+pCiEt2uCK5u/c+r L5ieIqILdpK1Sm0cZ4e8Wqe1WtWp+ULix8r1pisjpks8hFPYCGSgWZpIcbka5wxSB4sb NnThvstkoJH8RapXxM6eOd+Ei9S6OmFzzACMvMASjMqOY/qCbT9JsTjAlPcYpe7WqCfj Ropg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=UqF5hJIO5G6pT2YlF1JFUFz4qbZwSVm32VIL7xLd+HA=; b=qMW95nptwZIufaugvWL5lbrsI6yTgjU06ekhCbXnWgdUP0DFz7TOZipTo/IL3lCowj TAleV8f7o9oytGVnCb/0X4mkUggH/ALOdBWqTjo+kuH6mfNgEvlsGW9ZlexcjxuQuO8/ U5lzusrYRf+T448ziDRM5pOO7PA3Z9uyu0189Jz8IvvzIvS81YYIj0wNvbX04nYJcxFH tz+fzGn1D5T2x1qeEcYP3LsOdyaj2/W+tMDCSzLK2/Mv8hQmhNUpmHgIpo5GMT9dMGLI cfF0qhRgPV/rR1OUO+EIGLc14RG/5CNEHmPwJ6ruYxsRqZbtLKQNB/ryPR+evK8p2ACs gq9A== X-Gm-Message-State: AN3rC/5joO5NNrWzqzJwlZxbufVmd17L9qtgYS2ohGTM1uKstBBhHzbu x6JbXRYRaEFPHw== X-Received: by 10.55.124.71 with SMTP id x68mr2818325qkc.319.1493752996156; Tue, 02 May 2017 12:23:16 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Tue, 2 May 2017 12:22:43 -0700 Message-Id: <20170502192300.2124-9-rth@twiddle.net> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170502192300.2124-1-rth@twiddle.net> References: <20170502192300.2124-1-rth@twiddle.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400d:c09::244 Subject: [Qemu-devel] [PATCH v6 08/25] target/i386: introduce gen_jr helper to generate lookup_and_goto_ptr X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cota@braap.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 From: "Emilio G. Cota" This helper will be used by subsequent changes. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Emilio G. Cota Message-Id: <1493263764-18657-9-git-send-email-cota@braap.org> Signed-off-by: Richard Henderson --- target/i386/translate.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/target/i386/translate.c b/target/i386/translate.c index 1d1372f..f0e48dc 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -141,6 +141,7 @@ typedef struct DisasContext { } DisasContext; =20 static void gen_eob(DisasContext *s); +static void gen_jr(DisasContext *s, TCGv dest); static void gen_jmp(DisasContext *s, target_ulong eip); static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num); static void gen_op(DisasContext *s1, int op, TCGMemOp ot, int d); @@ -2509,7 +2510,8 @@ static void gen_bnd_jmp(DisasContext *s) If INHIBIT, set HF_INHIBIT_IRQ_MASK if it isn't already set. If RECHECK_TF, emit a rechecking helper for #DB, ignoring the state of S->TF. This is used by the syscall/sysret insns. */ -static void gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf) +static void +do_gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf, TCGv jr) { gen_update_cc_op(s); =20 @@ -2530,12 +2532,27 @@ static void gen_eob_worker(DisasContext *s, bool in= hibit, bool recheck_tf) tcg_gen_exit_tb(0); } else if (s->tf) { gen_helper_single_step(cpu_env); + } else if (!TCGV_IS_UNUSED(jr)) { + TCGv vaddr =3D tcg_temp_new(); + + tcg_gen_add_tl(vaddr, jr, cpu_seg_base[R_CS]); + tcg_gen_lookup_and_goto_ptr(vaddr); + tcg_temp_free(vaddr); } else { tcg_gen_exit_tb(0); } s->is_jmp =3D DISAS_TB_JUMP; } =20 +static inline void +gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf) +{ + TCGv unused; + + TCGV_UNUSED(unused); + do_gen_eob_worker(s, inhibit, recheck_tf, unused); +} + /* End of block. If INHIBIT, set HF_INHIBIT_IRQ_MASK if it isn't already set. */ static void gen_eob_inhibit_irq(DisasContext *s, bool inhibit) @@ -2549,6 +2566,12 @@ static void gen_eob(DisasContext *s) gen_eob_worker(s, false, false); } =20 +/* Jump to register */ +static void gen_jr(DisasContext *s, TCGv dest) +{ + do_gen_eob_worker(s, false, false, dest); +} + /* generate a jump to eip. No segment change must happen before as a direct call to the next block may occur */ static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num) --=20 2.9.3