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Mon, 22 Jun 2020 07:10:25 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 05M7ANoq55574772 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 22 Jun 2020 07:10:23 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4B6E2A4055; Mon, 22 Jun 2020 07:10:23 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 96F22A4057; Mon, 22 Jun 2020 07:10:20 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.199.52.56]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 22 Jun 2020 07:10:20 +0000 (GMT) From: Balamuruhan S To: mpe@ellerman.id.au Subject: [PATCH 5/6] powerpc sstep: introduce macros to retrieve Prefix instruction operands Date: Mon, 22 Jun 2020 12:39:40 +0530 Message-Id: <20200622070941.759307-6-bala24@linux.ibm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200622070941.759307-1-bala24@linux.ibm.com> References: <20200622070941.759307-1-bala24@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-06-22_02:2020-06-22, 2020-06-22 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=1 mlxlogscore=568 malwarescore=0 impostorscore=0 priorityscore=1501 adultscore=0 spamscore=0 cotscore=-2147483648 lowpriorityscore=0 bulkscore=0 clxscore=1015 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006220052 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" retrieve prefix instruction operands RA and pc relative bit R values using macros and adopt it in sstep.c and test_emulate_step.c. Signed-off-by: Balamuruhan S --- arch/powerpc/include/asm/sstep.h | 4 ++++ arch/powerpc/lib/sstep.c | 12 ++++++------ arch/powerpc/lib/test_emulate_step.c | 4 ++-- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/include/asm/sstep.h b/arch/powerpc/include/asm/sstep.h index 3b01c69a44aa..325975b4ef30 100644 --- a/arch/powerpc/include/asm/sstep.h +++ b/arch/powerpc/include/asm/sstep.h @@ -104,6 +104,10 @@ enum instruction_type { #define MKOP(t, f, s) ((t) | (f) | SIZE(s)) +/* Prefix instruction operands */ +#define GET_PREFIX_RA(i) (((i) >> 16) & 0x1f) +#define GET_PREFIX_R(i) ((i) & (1ul << 20)) + struct instruction_op { int type; int reg; diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index 5abe98216dc2..fb4c5767663d 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -200,8 +200,8 @@ static nokprobe_inline unsigned long mlsd_8lsd_ea(unsigned int instr, unsigned int dd; unsigned long ea, d0, d1, d; - prefix_r = instr & (1ul << 20); - ra = (suffix >> 16) & 0x1f; + prefix_r = GET_PREFIX_R(instr); + ra = GET_PREFIX_RA(suffix); d0 = instr & 0x3ffff; d1 = suffix & 0xffff; @@ -1339,8 +1339,8 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, switch (opcode) { #ifdef __powerpc64__ case 1: - prefix_r = word & (1ul << 20); - ra = (suffix >> 16) & 0x1f; + prefix_r = GET_PREFIX_R(word); + ra = GET_PREFIX_RA(suffix); rd = (suffix >> 21) & 0x1f; op->reg = rd; op->val = regs->gpr[rd]; @@ -2715,8 +2715,8 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, } break; case 1: /* Prefixed instructions */ - prefix_r = word & (1ul << 20); - ra = (suffix >> 16) & 0x1f; + prefix_r = GET_PREFIX_R(word); + ra = GET_PREFIX_RA(suffix); op->update_reg = ra; rd = (suffix >> 21) & 0x1f; op->reg = rd; diff --git a/arch/powerpc/lib/test_emulate_step.c b/arch/powerpc/lib/test_emulate_step.c index f9825c275c31..f1a447026b6e 100644 --- a/arch/powerpc/lib/test_emulate_step.c +++ b/arch/powerpc/lib/test_emulate_step.c @@ -1229,8 +1229,8 @@ static int __init emulate_compute_instr(struct pt_regs *regs, * instruction */ if (ppc_inst_prefixed(instr)) { - prefix_r = ppc_inst_val(instr) & (1UL << 20); - ra = (ppc_inst_suffix(instr) >> 16) & 0x1f; + prefix_r = GET_PREFIX_R(ppc_inst_val(instr)); + ra = GET_PREFIX_RA(ppc_inst_suffix(instr)); if (prefix_r && !ra) regs->nip = patch_site_addr(&patch__exec_instr); } -- 2.24.1