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Fri, 16 Apr 2021 06:47:25 +0000 (GMT) Received: from ltc-zz14-lp7.aus.stglabs.ibm.com (unknown [9.40.195.16]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 16 Apr 2021 06:47:25 +0000 (GMT) From: Sathvika Vasireddy To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/2] =?UTF-8?q?powerpc/sstep:=20Add=20emulation=20support?= =?UTF-8?q?=20for=20=E2=80=98setb=E2=80=99=20instruction?= Date: Fri, 16 Apr 2021 02:02:48 -0500 Message-Id: <767e53c4c27da024ca277e21ffcd0cff131f5c73.1618469454.git.sathvika@linux.vnet.ibm.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: PASFrHdBjLqdNPMEh7pBlYWT5G-L5Uh5 X-Proofpoint-GUID: PASFrHdBjLqdNPMEh7pBlYWT5G-L5Uh5 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-04-15_11:2021-04-15, 2021-04-15 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104160049 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: naveen.n.rao@linux.ibm.com, Sathvika Vasireddy Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This adds emulation support for the following instruction: * Set Boolean (setb) Signed-off-by: Sathvika Vasireddy --- arch/powerpc/lib/sstep.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index c6aebc149d14..263c613d7490 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -1964,6 +1964,18 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, op->val = ~(regs->gpr[rd] | regs->gpr[rb]); goto logical_done; + case 128: /* setb */ + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + goto unknown_opcode; + ra = ra & ~0x3; + if ((regs->ccr) & (1 << (31 - ra))) + op->val = -1; + else if ((regs->ccr) & (1 << (30 - ra))) + op->val = 1; + else + op->val = 0; + goto compute_done; + case 154: /* prtyw */ do_prty(regs, op, regs->gpr[rd], 32); goto logical_done_nocc; -- 2.16.4