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Fri, 05 Mar 2021 08:27:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.uni-paderborn.de; s=20170601; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=yIAXfwirLoiYvOspHSlsnTP6N7PsbWc5bt46yW0Tvig=; b=TOSJYfpQKHwRLqjQsOj2X9ccwN ffRsBuqtJTSUVKgmet6hWM6sTWyrI+8vrLfz1ZpPBy2bngIqAPAq36Q7hW/JiOUeo+4/STyn1bnEN bTqInGwu75Qcvvy4kJiEjj+NxKRpJ0zj+GAKnaoVgLZ3+KLyC0BykeiSJS7Uh8m77xCk=; X-Envelope-From: From: Bastian Koppelmann To: qemu-devel@nongnu.org Subject: [PATCH 2/2] target/tricore: Fix OPC2_32_RRPW_EXTR for width=0 Date: Fri, 5 Mar 2021 14:26:29 +0100 Message-Id: <20210305132629.755627-3-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210305132629.755627-1-kbastian@mail.uni-paderborn.de> References: <20210305132629.755627-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-PMX-Version: 6.4.9.2830568, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2021.3.5.131517, AntiVirus-Engine: 5.80.0, AntiVirus-Data: 2021.2.8.5800000 X-Sophos-SenderHistory: ip=2a02:908:2214:e5bc::95d, fs=30588201, da=102559882, mc=524, sc=4, hc=520, sp=0, fso=30588201, re=0, sd=0, hd=0 X-IMT-Spam-Score: 0.0 () X-IMT-Authenticated-Sender: uid=kbastian,ou=People,o=upb,c=de 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=2001:638:502:c003::14; envelope-from=kbastian@mail.uni-paderborn.de; helo=collins.uni-paderborn.de X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, 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: kbastian@mail.uni-paderborn.de, david.brenken@efs-auto.de, georg.hofstetter@efs-auto.de, andreas.konopik@efs-auto.de Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" if width was 0 we would run into the assertion: qemu-system-tricore: ../upstream/tcg/tcg-op.c:217: tcg_gen_sari_i32: Assert= ion `arg2 >=3D 0 && arg2 < 32' failed.o The instruction manuel specifies undefined behaviour for this case. So we bring this in line with the golden Infineon simlator 'tsim', which simply writes 0 to the result in case of width=3D0. Signed-off-by: Bastian Koppelmann Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson --- target/tricore/translate.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/target/tricore/translate.c b/target/tricore/translate.c index 67a7f646a2..d8b773ab37 100644 --- a/target/tricore/translate.c +++ b/target/tricore/translate.c @@ -6998,10 +6998,16 @@ static void decode_rrpw_extract_insert(DisasContext= *ctx) pos =3D MASK_OP_RRPW_POS(ctx->opcode); width =3D MASK_OP_RRPW_WIDTH(ctx->opcode); =20 + switch (op2) { case OPC2_32_RRPW_EXTR: + if (width =3D=3D 0) { + tcg_gen_movi_tl(cpu_gpr_d[r3], 0); + break; + } + if (pos + width <=3D 32) { - /* optimize special cases */ + /* optimize special cases */ if ((pos =3D=3D 0) && (width =3D=3D 8)) { tcg_gen_ext8s_tl(cpu_gpr_d[r3], cpu_gpr_d[r1]); } else if ((pos =3D=3D 0) && (width =3D=3D 16)) { --=20 2.30.1