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b=hgi0hBzksP2ngJb1x75PBOSc0xOiUnYreYGcC/srMAySkNWOiaHFPY7B1QDu24Qp/EgU KC1y5PkFsc6WauSJuM00ODWoev37rVZhwlkhmSKY1MhEIm0UwNlsIfynGuopOMgsusbh 8yCzK5+jkYF2SGhASJRvU1gBm/1OAgpWUHFR/h2UB65Lz5BCFJ7TsZeeMg9C9JuQw5zQ vWoazHdHa88uRnUv//kBdJYQDIi4U5kWAMf6zvBoNclQhN3msNOpeLI6hbFN0o8swNTS ZYJ+lYFEWtldFG6Myi3Nrv+GRZ1LDO9PsXTs6TR7vLw4cS1tp4k2j8NimrGKi8NbV2IO EA== From: Ilya Leoshkevich To: Laurent Vivier , Richard Henderson , David Hildenbrand Cc: Thomas Huth , qemu-devel@nongnu.org, qemu-s390x@nongnu.org, Ilya Leoshkevich Subject: [PATCH 12/12] tests/tcg/s390x: Test MVCRL with a large value in R0 Date: Mon, 3 Jul 2023 17:50:38 +0200 Message-ID: <20230703155801.179167-13-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230703155801.179167-1-iii@linux.ibm.com> References: <20230703155801.179167-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: ghOqyc-wvexD1zbhk6MgtinB0JRugpc- X-Proofpoint-GUID: Sm9KgzPpdBdSy0hI6olnHvcPIzH8ake_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-03_11,2023-06-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 bulkscore=0 spamscore=0 malwarescore=0 adultscore=0 impostorscore=0 phishscore=0 priorityscore=1501 mlxscore=0 mlxlogscore=867 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2307030141 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=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, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1688399966672100003 Content-Type: text/plain; charset="utf-8" Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand --- tests/tcg/s390x/mie3-mvcrl.c | 46 ++++++++++++++++++++++++++++-------- 1 file changed, 36 insertions(+), 10 deletions(-) diff --git a/tests/tcg/s390x/mie3-mvcrl.c b/tests/tcg/s390x/mie3-mvcrl.c index 93c7b0a2903..ec78dd1d493 100644 --- a/tests/tcg/s390x/mie3-mvcrl.c +++ b/tests/tcg/s390x/mie3-mvcrl.c @@ -1,29 +1,55 @@ +#include #include +#include #include =20 - -static inline void mvcrl_8(const char *dst, const char *src) +static void mvcrl(const char *dst, const char *src, size_t len) { + register long r0 asm("r0") =3D len; + asm volatile ( - "llill %%r0, 8\n" ".insn sse, 0xE50A00000000, 0(%[dst]), 0(%[src])" - : : [dst] "d" (dst), [src] "d" (src) - : "r0", "memory"); + : : [dst] "d" (dst), [src] "d" (src), "r" (r0) + : "memory"); } =20 - -int main(int argc, char *argv[]) +static bool test(void) { const char *alpha =3D "abcdefghijklmnop"; =20 /* array missing 'i' */ - char tstr[17] =3D "abcdefghjklmnop\0" ; + char tstr[17] =3D "abcdefghjklmnop\0"; =20 /* mvcrl reference use: 'open a hole in an array' */ - mvcrl_8(tstr + 9, tstr + 8); + mvcrl(tstr + 9, tstr + 8, 8); =20 /* place missing 'i' */ tstr[8] =3D 'i'; =20 - return strncmp(alpha, tstr, 16ul); + return strncmp(alpha, tstr, 16ul) =3D=3D 0; +} + +static bool test_bad_r0(void) +{ + char src[256]; + + /* + * PoP says: Bits 32-55 of general register 0 should contain zeros; + * otherwise, the program may not operate compatibly in the future. + * + * Try it anyway in order to check whether this would crash QEMU itsel= f. + */ + mvcrl(src, src, (size_t)-1); + + return true; +} + +int main(void) +{ + bool ok =3D true; + + ok &=3D test(); + ok &=3D test_bad_r0(); + + return ok ? EXIT_SUCCESS : EXIT_FAILURE; } --=20 2.41.0