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Tue, 28 Jul 2020 13:03:34 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 06SD3V1S62456022 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Jul 2020 13:03:31 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 605F34C04E; Tue, 28 Jul 2020 13:03:31 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C495D4C058; Tue, 28 Jul 2020 13:03:28 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.79.208.115]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 28 Jul 2020 13:03:28 +0000 (GMT) From: Balamuruhan S To: mpe@ellerman.id.au Subject: [PATCH v4 0/3] Add support for divde[.] and divdeu[.] instruction emulation Date: Tue, 28 Jul 2020 18:33:05 +0530 Message-Id: <20200728130308.1790982-1-bala24@linux.ibm.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-28_07:2020-07-28, 2020-07-28 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 adultscore=0 impostorscore=0 suspectscore=1 spamscore=0 mlxlogscore=998 priorityscore=1501 bulkscore=0 lowpriorityscore=0 clxscore=1015 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007280095 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ravi.bangoria@linux.ibm.com, jniethe5@gmail.com, Balamuruhan S , paulus@samba.org, sandipan@linux.ibm.com, naveen.n.rao@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hi All, This patchset adds support to emulate divde, divde., divdeu and divdeu. instructions and testcases for it. Resend v4: rebased on latest powerpc next branch Changes in v4: ------------- Fix review comments from Naveen, * replace TEST_DIVDEU() instead of wrongly used TEST_DIVDEU_DOT() in divdeu testcase. * Include `acked-by` tag from Naveen for the series. * Rebase it on latest mpe's merge tree. Changes in v3: ------------- * Fix suggestion from Sandipan to remove `PPC_INST_DIVDE_DOT` and `PPC_INST_DIVDEU_DOT` opcode macros defined in ppc-opcode.h, reuse `PPC_INST_DIVDE` and `PPC_INST_DIVDEU` in test_emulate_step.c to derive them respectively. Changes in v2: ------------- * Fix review comments from Paul to make divde_dot and divdeu_dot simple by using divde and divdeu, then goto `arith_done` instead of `compute_done`. * Include `Reviewed-by` tag from Sandipan Das. * Rebase with recent mpe's merge tree. I would request for your review and suggestions for making it better. Boot Log: -------- :: :: :: :: 291494043: (291493996): [ 0.352649][ T1] emulate_step_test: divde : RA = LONG_MIN, RB = LONG_MIN PASS 291517665: (291517580): [ 0.352695][ T1] emulate_step_test: divde : RA = 1L, RB = 0 PASS 291541357: (291541234): [ 0.352742][ T1] emulate_step_test: divde : RA = LONG_MIN, RB = LONG_MAX PASS 291565107: (291564946): [ 0.352788][ T1] emulate_step_test: divde. : RA = LONG_MIN, RB = LONG_MIN PASS 291588757: (291588558): [ 0.352834][ T1] emulate_step_test: divde. : RA = 1L, RB = 0 PASS 291612477: (291612240): [ 0.352881][ T1] emulate_step_test: divde. : RA = LONG_MIN, RB = LONG_MAX PASS 291636201: (291635926): [ 0.352927][ T1] emulate_step_test: divdeu : RA = LONG_MIN, RB = LONG_MIN PASS 291659830: (291659517): [ 0.352973][ T1] emulate_step_test: divdeu : RA = 1L, RB = 0 PASS 291683529: (291683178): [ 0.353019][ T1] emulate_step_test: divdeu : RA = LONG_MIN, RB = LONG_MAX PASS 291707248: (291706859): [ 0.353066][ T1] emulate_step_test: divdeu : RA = LONG_MAX - 1, RB = LONG_MAX PASS 291730962: (291730535): [ 0.353112][ T1] emulate_step_test: divdeu : RA = LONG_MIN + 1, RB = LONG_MIN PASS 291754714: (291754249): [ 0.353158][ T1] emulate_step_test: divdeu. : RA = LONG_MIN, RB = LONG_MIN PASS 291778371: (291777868): [ 0.353205][ T1] emulate_step_test: divdeu. : RA = 1L, RB = 0 PASS 291802098: (291801557): [ 0.353251][ T1] emulate_step_test: divdeu. : RA = LONG_MIN, RB = LONG_MAX PASS 291825844: (291825265): [ 0.353297][ T1] emulate_step_test: divdeu. : RA = LONG_MAX - 1, RB = LONG_MAX PASS 291849586: (291848969): [ 0.353344][ T1] emulate_step_test: divdeu. : RA = LONG_MIN + 1, RB = LONG_MIN PASS :: :: :: :: 292520225: (292519608): [ 0.354654][ T1] registered taskstats version 1 292584751: (292584134): [ 0.354780][ T1] pstore: Using crash dump compression: deflate 296454422: (296453805): [ 0.362338][ T1] Freeing unused kernel memory: 1408K 296467838: (296467221): [ 0.362364][ T1] This architecture does not have kernel memory protection. 296485387: (296484770): [ 0.362398][ T1] Run /init as init process 297987339: (297986761): [ 0.365332][ T46] mount (46) used greatest stack depth: 12512 bytes left 298889548: (298888992): [ 0.367094][ T47] mount (47) used greatest stack depth: 11824 bytes left 355356256: (355355821): Welcome to Buildroot 355376898: (355376463): buildroot login: Balamuruhan S (3): powerpc ppc-opcode: add divde and divdeu opcodes powerpc sstep: add support for divde[.] and divdeu[.] instructions powerpc test_emulate_step: add testcases for divde[.] and divdeu[.] instructions arch/powerpc/include/asm/ppc-opcode.h | 6 + arch/powerpc/lib/sstep.c | 13 ++- arch/powerpc/lib/test_emulate_step.c | 156 ++++++++++++++++++++++++++ 3 files changed, 174 insertions(+), 1 deletion(-) base-commit: 7a9912e4cf048b607c8fafcfbdca7566660f1d78 -- 2.24.1