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Thu, 16 Mar 2023 16:44:35 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 18F4420043; Thu, 16 Mar 2023 16:44:35 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.2.157]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 16 Mar 2023 16:44:35 +0000 (GMT) From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Ilya Leoshkevich , Nina Schoetterl-Glausch Subject: [PATCH v4 02/12] target/s390x: Handle EXECUTE of odd addresses Date: Thu, 16 Mar 2023 17:44:18 +0100 Message-Id: <20230316164428.275147-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230316164428.275147-1-iii@linux.ibm.com> References: <20230316164428.275147-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 0FeQ7gLYaTG1Ng2aT9sicdHG9iVy-h3g X-Proofpoint-ORIG-GUID: mbqNp7kBlqoTGEhcDGhzA10Llxr1pznO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-16_10,2023-03-16_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 bulkscore=0 spamscore=0 clxscore=1015 mlxlogscore=788 suspectscore=0 phishscore=0 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303150002 definitions=main-2303160131 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com 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_EF=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Generate a specification exception in the helper before trying to fetch the instruction. Reported-by: Nina Schoetterl-Glausch Reviewed-by: Richard Henderson Signed-off-by: Ilya Leoshkevich --- target/s390x/tcg/mem_helper.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/target/s390x/tcg/mem_helper.c b/target/s390x/tcg/mem_helper.c index 6835c26dda4..9d1c4bb7374 100644 --- a/target/s390x/tcg/mem_helper.c +++ b/target/s390x/tcg/mem_helper.c @@ -2468,8 +2468,16 @@ void HELPER(stpq_parallel)(CPUS390XState *env, uint64_t addr, */ void HELPER(ex)(CPUS390XState *env, uint32_t ilen, uint64_t r1, uint64_t addr) { - uint64_t insn = cpu_lduw_code(env, addr); - uint8_t opc = insn >> 8; + uint64_t insn; + uint8_t opc; + + /* EXECUTE targets must be at even addresses. */ + if (addr & 1) { + tcg_s390_program_interrupt(env, PGM_SPECIFICATION, GETPC()); + } + + insn = cpu_lduw_code(env, addr); + opc = insn >> 8; /* Or in the contents of R1[56:63]. */ insn |= r1 & 0xff;