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=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 5DB8EC3A5A0 for ; Mon, 19 Aug 2019 22:26:28 +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 2493922CE8 for ; Mon, 19 Aug 2019 22:26:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="e8BwcgYX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2493922CE8 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]:59990 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzq6d-0000y3-7g for qemu-devel@archiver.kernel.org; Mon, 19 Aug 2019 18:26:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59805) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzpMl-0002b3-Q5 for qemu-devel@nongnu.org; Mon, 19 Aug 2019 17:39:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hzpMk-0006kT-GH for qemu-devel@nongnu.org; Mon, 19 Aug 2019 17:39:03 -0400 Received: from mail-pf1-x443.google.com ([2607:f8b0:4864:20::443]:44547) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hzpMk-0006jx-Ac for qemu-devel@nongnu.org; Mon, 19 Aug 2019 17:39:02 -0400 Received: by mail-pf1-x443.google.com with SMTP id c81so1937297pfc.11 for ; Mon, 19 Aug 2019 14:39:02 -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; bh=xWTPQIHYecFzB/xCsq79DFxtQ/kqN477ghAb6EWu45A=; b=e8BwcgYXLMZDrO7gOFtA1K2tYWFxKf+QLeP7YzSCpyiYbNqRzRroQQs7AQOUdHOKW/ jhQvujm7zMZEJc8Ddb2UJ09WZFbC6tvPQ9D6TLG9MNL2SxvR96Q7RUFqDCkjWRopJXo0 hxPLqZJWOK9/cRzx4D6bs0o7FROvOi1KL4vb5e/4fC6mHzSB0Oy/uYCu+mS0vTl3sdj8 QDu+MiQjKtFE7m0qADwskIcT0736i+wIu/nuwLGUzOHP5hGVitf9Rm0rzkWR7aAByzLh GULDdhV1zlsj9oQtVlElcoIw3hrqguwzoFtkZboIDquvpQtVLEiu4Zl6A+9BOGShUGQV LXdQ== 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=xWTPQIHYecFzB/xCsq79DFxtQ/kqN477ghAb6EWu45A=; b=fHxj7ycY/CeRBn6tKD2+mPb5PY9zfRxqLy01Ckk1K4B1sYPt9cPQx4YYEirKzueADu D940q7Cziygx1MXM/Fofe6YiR3jJ7TvRR7fVNygrUjm6K7yqQ4zxxewGZ7/RF6cZUaWA RUVjgsFni7w3MpA6nVJIP4UhVJfkm1EDyJv1wxGlnZHv+iilXFxzKFPBSSI5V5+U5zM7 CR+0Or95bxFG3+P7Dv2lqNVjJzbaZ4+s/BXwvHbdFNMWHmNXdMEdubR+yHJA/VsZOlrL tn92+C/7t/zhk5IoQDN3WFT3Nwmrbd8CN/Xwqa0t43QJW/0hbQ9hIPxTv5xK7DcPEeWe SlRg== X-Gm-Message-State: APjAAAVvLFQ5tsj72Eqj1UzcBcKbqTLL/p82e5vNohRu1WbqjhlJF8jK Qda81KF3Z//16rNCfwBc1CfMSTDBZjA= X-Google-Smtp-Source: APXvYqw3I69VW+AMfTiuC4QPCRDNDH1obpSpmwupmiGogL/fCEW4fomidpN7CkrLfIwBsNYlF6Ks1g== X-Received: by 2002:a17:90a:ab01:: with SMTP id m1mr21966827pjq.69.1566250741075; Mon, 19 Aug 2019 14:39:01 -0700 (PDT) Received: from localhost.localdomain (97-113-7-119.tukw.qwest.net. [97.113.7.119]) by smtp.gmail.com with ESMTPSA id d2sm13446951pjs.21.2019.08.19.14.38.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2019 14:39:00 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Mon, 19 Aug 2019 14:37:39 -0700 Message-Id: <20190819213755.26175-53-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190819213755.26175-1-richard.henderson@linaro.org> References: <20190819213755.26175-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::443 Subject: [Qemu-devel] [PATCH v2 52/68] target/arm: Convert T16 branch and exchange 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, qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Richard Henderson --- target/arm/translate.c | 64 +++++++++++++++--------------------------- target/arm/t16.decode | 10 +++++++ 2 files changed, 33 insertions(+), 41 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index 3a3b113822..60bfc943a3 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -8335,7 +8335,7 @@ static bool trans_BX(DisasContext *s, arg_BX *a) if (!ENABLE_ARCH_4T) { return false; } - gen_bx(s, load_reg(s, a->rm)); + gen_bx_excret(s, load_reg(s, a->rm)); return true; } @@ -8362,6 +8362,26 @@ static bool trans_BLX_r(DisasContext *s, arg_BLX_r *a) return true; } +static bool trans_BXNS(DisasContext *s, arg_BXNS *a) +{ + if (!s->v8m_secure || IS_USER_ONLY) { + unallocated_encoding(s); + } else { + gen_bxns(s, a->rm); + } + return true; +} + +static bool trans_BLXNS(DisasContext *s, arg_BLXNS *a) +{ + if (!s->v8m_secure || IS_USER_ONLY) { + unallocated_encoding(s); + } else { + gen_blxns(s, a->rm); + } + return true; +} + static bool trans_CLZ(DisasContext *s, arg_CLZ *a) { TCGv_i32 tmp; @@ -10637,49 +10657,11 @@ static void disas_thumb_insn(DisasContext *s, uint32_t insn) } break; case 3: - { /* 0b0100_0111_xxxx_xxxx * - branch [and link] exchange thumb register + * In decodetree */ - bool link = insn & (1 << 7); - - if (insn & 3) { - goto undef; - } - if (link) { - ARCH(5); - } - if ((insn & 4)) { - /* BXNS/BLXNS: only exists for v8M with the - * security extensions, and always UNDEF if NonSecure. - * We don't implement these in the user-only mode - * either (in theory you can use them from Secure User - * mode but they are too tied in to system emulation.) - */ - if (!s->v8m_secure || IS_USER_ONLY) { - goto undef; - } - if (link) { - gen_blxns(s, rm); - } else { - gen_bxns(s, rm); - } - break; - } - /* BLX/BX */ - tmp = load_reg(s, rm); - if (link) { - val = (uint32_t)s->base.pc_next | 1; - tmp2 = tcg_temp_new_i32(); - tcg_gen_movi_i32(tmp2, val); - store_reg(s, 14, tmp2); - gen_bx(s, tmp); - } else { - /* Only BX works as exception-return, not BLX */ - gen_bx_excret(s, tmp); - } - break; - } + goto illegal_op; } break; } diff --git a/target/arm/t16.decode b/target/arm/t16.decode index 0654275e68..edddbfb9b8 100644 --- a/target/arm/t16.decode +++ b/target/arm/t16.decode @@ -24,6 +24,7 @@ &s_rri_rot !extern s rn rd imm rot &s_rrrr !extern s rd rn rm ra &ri !extern rd imm +&r !extern rm &ldst_rr !extern p w u rn rt rm shimm shtype &ldst_ri !extern p w u rn rt imm &ldst_block !extern rn i b u w list @@ -144,3 +145,12 @@ MOV_rxi 00100 ... ........ @arith_1i %s CMP_xri 00101 ... ........ @arith_1i s=1 ADD_rri 00110 ... ........ @arith_1i %s SUB_rri 00111 ... ........ @arith_1i %s + +# Branch and exchange + +@branchr .... .... . rm:4 ... &r + +BX 0100 0111 0 .... 000 @branchr +BLX_r 0100 0111 1 .... 000 @branchr +BXNS 0100 0111 0 .... 100 @branchr +BLXNS 0100 0111 1 .... 100 @branchr -- 2.17.1