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b=EUpPSgEY+Mx6G4qFV6THweVw/574AU23bcmC6jBR/GwO+yQCMPMu86AZTsyEK1WnV0hv /6QRYiAIA6+/pkOmoNcBpzksjCsiTlRfwsal9iBvbgKTAjmq4SWFvstDIuUHUlirtfUn lleDBdBJgE+4BU5BMUvg98yQem1LujA9Fp9a/BWSuYgMG5ONBFu2J8RZbX68QHHhqpV9 WUVVu0T8uY4FppbV4v+b+BMhDj24g8p8jV+tWy9hNKQbUwP5V+iwAJLsDr8pMGdIATTG deRWFRbuUguu3a3oQrJdHsxy/aUwlG4Z6kbvhN3WybANuRA4dBBhUu+4syNpEYEDem+N yQ== From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand , Thomas Huth Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH 1/2] target/s390x: Fix R[NOX]SBG with T=1 Date: Wed, 15 Mar 2023 00:34:42 +0100 Message-Id: <20230314233443.324727-2-iii@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230314233443.324727-1-iii@linux.ibm.com> References: <20230314233443.324727-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: -h8UDvE7K6upg7P-sNBU8HnsX44mmYVO X-Proofpoint-GUID: STrzKoPIeV1vJpZ3wdvQ_CMmnDdG5cYH 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=2023-03-14_14,2023-03-14_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=999 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 mlxscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2302240000 definitions=main-2303140189 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=148.163.158.5; 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_H2=-0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1678836980401100001 Content-Type: text/plain; charset="utf-8" RXSBG usage in the "filetests" test from the wasmtime testsuite makes tcg_reg_alloc_op() attempt to temp_load() a TEMP_VAL_DEAD temporary, causing an assertion failure: 0x01000a70: ec14 b040 3057 rxsbg %r1, %r4, 0xb0, 0x40, 0x30 OP after optimization and liveness analysis: ---- 0000000001000a70 0000000000000004 0000000000000006 rotl_i64 tmp2,r4,$0x30 dead: 1 2 pref=3D0xffff and_i64 tmp2,tmp2,$0x800000000000ffff dead: 1 pref=3D0xffff [xor_i64 tmp3,tmp3,tmp2 dead: 1 2 pref=3D0xffff] and_i64 cc_dst,tmp3,$0x800000000000ffff sync: 0 dead: 0 1 2 pref=3D= 0xffff mov_i64 psw_addr,$0x1000a76 sync: 0 dead: 0 1 pref=3D0x= ffff mov_i32 cc_op,$0x6 sync: 0 dead: 0 1 pref=3D0x= ffff call lookup_tb_ptr,$0x6,$1,tmp8,env dead: 1 pref=3Dnone goto_ptr tmp8 dead: 0 set_label $L0 exit_tb $0x7fffe809d183 ../tcg/tcg.c:3865: tcg fatal error The reason is that tmp3 does not have an initial value, which confuses the register allocator. This also affects the correctness of the results. Fix by assigning R1 to it. Fixes: d6c6372e186e ("target-s390: Implement R[NOX]SBG") Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand --- target/s390x/tcg/translate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index 14c3896d529..6dd2f41ad08 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -3696,10 +3696,13 @@ static DisasJumpType op_rosbg(DisasContext *s, Disa= sOps *o) int i4 =3D get_field(s, i4); int i5 =3D get_field(s, i5); uint64_t mask; + TCGv_i64 tmp; =20 /* If this is a test-only form, arrange to discard the result. */ if (i3 & 0x80) { + tmp =3D o->out; o->out =3D tcg_temp_new_i64(); + tcg_gen_mov_i64(o->out, tmp); } =20 i3 &=3D 63; --=20 2.39.2 From nobody Sat May 18 19:24:21 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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Tue, 14 Mar 2023 23:35:08 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4ECF72004B; Tue, 14 Mar 2023 23:35:08 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D476B20040; Tue, 14 Mar 2023 23:35:07 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.171.45.154]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 14 Mar 2023 23:35:07 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=oTgi4gnd8v8PGc3AKinDD+gYA6dt4NSbD7p5qF7Kcuo=; b=IDgLr94HJZ+2hjsOlFdbty62yjKe2CK1V0PN6ZQVstGSdWOU+ewj2zdyIHoBbfBPrja3 wUR0mQKXCa4/c2gYo3uGqLis9XyJRiyFJCtqVuZg+I2Lc2sd2dBZkRFMF3ICK9dv+POi Ty7ie1siwaib4XRSd+UNNko9SYkM+9beBq85GxMxEq/i9GEg7ooqU7oKj5+NBNuEgCJL 7yUW1mZhBKMhc6c0Ol943LNS0LOe/cgU/LqFt9MhYpL7977aPfjJgevtja49b01EaqLs DqgmGzBlgTpKvPHcBC2C3hkhgI2U57Q8sdCCLBy1gIi+bfTe4zCE0c8iLGBvKDtvNF+7 oQ== From: Ilya Leoshkevich To: Richard Henderson , David Hildenbrand , Thomas Huth Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH 2/2] tests/tcg/s390x: Add rxsbg.c Date: Wed, 15 Mar 2023 00:34:43 +0100 Message-Id: <20230314233443.324727-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230314233443.324727-1-iii@linux.ibm.com> References: <20230314233443.324727-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: uwXPYyG55fcHCI7MDFa_svQuedlpOrwP X-Proofpoint-ORIG-GUID: WgBJubdH1JljcBMPLGRTHx92imb-pzsT 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=2023-03-14_14,2023-03-14_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 adultscore=0 spamscore=0 mlxscore=0 clxscore=1015 phishscore=0 mlxlogscore=887 impostorscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303140189 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=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-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_H2=-0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1678836987822100003 Content-Type: text/plain; charset="utf-8" Add a small test for RXSBG with T=3D1 to prevent regressions. Signed-off-by: Ilya Leoshkevich --- tests/tcg/s390x/Makefile.target | 1 + tests/tcg/s390x/rxsbg.c | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+) create mode 100644 tests/tcg/s390x/rxsbg.c diff --git a/tests/tcg/s390x/Makefile.target b/tests/tcg/s390x/Makefile.tar= get index cf93b966862..b4d0d704534 100644 --- a/tests/tcg/s390x/Makefile.target +++ b/tests/tcg/s390x/Makefile.target @@ -29,6 +29,7 @@ TESTS+=3Dclst TESTS+=3Dlong-double TESTS+=3Dcdsg TESTS+=3Dchrl +TESTS+=3Drxsbg =20 cdsg: CFLAGS+=3D-pthread cdsg: LDFLAGS+=3D-pthread diff --git a/tests/tcg/s390x/rxsbg.c b/tests/tcg/s390x/rxsbg.c new file mode 100644 index 00000000000..b7f35411899 --- /dev/null +++ b/tests/tcg/s390x/rxsbg.c @@ -0,0 +1,25 @@ +/* + * Smoke test RXSBG instruction with T=3D1. + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#include +#include + +int main(void) +{ + unsigned long r1, r2, cc; + + r1 =3D 0xc8dc86a225a77bb4; + r2 =3D 0xd6aff24fa3e7320; + cc =3D 0; + asm("rxsbg %[r1],%[r2],177,43,228\n" + "ipm %[cc]" + : [cc] "+r" (cc) + : [r1] "r" (r1) + , [r2] "r" (r2) + : "cc"); + cc =3D (cc >> 28) & 1; + assert(cc =3D=3D 1); + + return EXIT_SUCCESS; +} --=20 2.39.2