From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44281) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPBzI-0005ET-7f for qemu-devel@nongnu.org; Mon, 18 Jul 2016 13:05:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bPBzD-0006lv-4q for qemu-devel@nongnu.org; Mon, 18 Jul 2016 13:05:47 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:7755 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPBzC-0006lj-Os for qemu-devel@nongnu.org; Mon, 18 Jul 2016 13:05:42 -0400 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u6IGx54O084367 for ; Mon, 18 Jul 2016 13:05:42 -0400 Received: from e28smtp09.in.ibm.com (e28smtp09.in.ibm.com [125.16.236.9]) by mx0b-001b2d01.pphosted.com with ESMTP id 248gg3qw1p-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 18 Jul 2016 13:05:41 -0400 Received: from localhost by e28smtp09.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 18 Jul 2016 22:35:38 +0530 From: Nikunj A Dadhania Date: Mon, 18 Jul 2016 22:35:13 +0530 In-Reply-To: <1468861517-2508-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1468861517-2508-1-git-send-email-nikunj@linux.vnet.ibm.com> Message-Id: <1468861517-2508-10-git-send-email-nikunj@linux.vnet.ibm.com> Subject: [Qemu-devel] [RFC v1 09/13] target-ppc: add cmpeqb instruction List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Cc: qemu-devel@nongnu.org, aneesh.kumar@linux.vnet.ibm.com, benh@kernel.crashing.org, nikunj@linux.vnet.ibm.com, Swapnil Bokade , Sandipan Das From: Swapnil Bokade Search a byte in the stream of 8bytes provided in the register Signed-off-by: Sandipan Das [ Modified the logic to use lesser temporaries ] Signed-off-by: Nikunj A Dadhania --- target-ppc/translate.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index a57f7dd..8f7ff49 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -856,6 +856,32 @@ static void gen_cmprb(DisasContext *ctx) tcg_temp_free(src2hi); } +/* cmpeqb */ +static void gen_cmpeqb(DisasContext *ctx) +{ + TCGLabel *l1 = gen_new_label(); + TCGLabel *l2 = gen_new_label(); + TCGv src1 = tcg_temp_local_new(); + TCGv t0 = tcg_temp_local_new(); + TCGv arg1 = cpu_gpr[rB(ctx->opcode)]; + int i; + + tcg_gen_andi_tl(src1, cpu_gpr[rA(ctx->opcode)], 0xFF); + for (i = 0; i < 64; i += 8) { + tcg_gen_shri_tl(t0, arg1, i); + tcg_gen_andi_tl(t0, t0, 0xFF); + tcg_gen_brcond_tl(TCG_COND_EQ, src1, t0, l1); + } + tcg_gen_movi_i32(cpu_crf[crfD(ctx->opcode)], 0); + tcg_gen_br(l2); + gen_set_label(l1); + /* Set match bit, i.e. CRF_GT */ + tcg_gen_movi_i32(cpu_crf[crfD(ctx->opcode)], 1 << CRF_GT); + gen_set_label(l2); + tcg_temp_free(src1); + tcg_temp_free(t0); +} + /* isel (PowerPC 2.03 specification) */ static void gen_isel(DisasContext *ctx) { @@ -10040,6 +10066,7 @@ GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpi, 0x0B, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpl, 0x1F, 0x00, 0x01, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpli, 0x0A, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), +GEN_HANDLER_E(cmpeqb, 0x1F, 0x00, 0x07, 0x00600000, PPC_NONE, PPC2_ISA300), GEN_HANDLER_E(cmpb, 0x1F, 0x1C, 0x0F, 0x00000001, PPC_NONE, PPC2_ISA205), GEN_HANDLER_E(cmprb, 0x1F, 0x00, 0x06, 0x00400001, PPC_NONE, PPC2_ISA300), GEN_HANDLER(isel, 0x1F, 0x0F, 0xFF, 0x00000001, PPC_ISEL), -- 2.7.4