From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44998) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bN22B-0001vB-8o for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bN227-0000Cr-1Y for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:50 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:60497) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bN226-0000Cc-Ov for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:46 -0400 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u6CI3j3p044638 for ; Tue, 12 Jul 2016 14:03:46 -0400 Received: from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148]) by mx0a-001b2d01.pphosted.com with ESMTP id 2452xqwpr0-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 12 Jul 2016 14:03:45 -0400 Received: from localhost by e23smtp06.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Jul 2016 04:03:42 +1000 From: Nikunj A Dadhania Date: Tue, 12 Jul 2016 23:33:20 +0530 In-Reply-To: <1468346602-20700-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1468346602-20700-1-git-send-email-nikunj@linux.vnet.ibm.com> Message-Id: <1468346602-20700-5-git-send-email-nikunj@linux.vnet.ibm.com> Subject: [Qemu-devel] [RFC 4/6] target-ppc: add cmprb 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 ISA 3.0 Compare Ranged Byte instruction useful for isupper/islower/isaplha kind of operation. Signed-off-by: Nikunj A Dadhania --- target-ppc/translate.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 93c7c66..8de217f 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -817,6 +817,45 @@ static void gen_cmpli(DisasContext *ctx) } } +/* cmprb - range comparison: isupper, isaplha, islower*/ +static void gen_cmprb(DisasContext *ctx) +{ + TCGLabel *lab1 = gen_new_label(); + TCGLabel *lab2 = gen_new_label(); + TCGv src1 = tcg_temp_local_new(); + TCGv src2 = tcg_temp_local_new(); + TCGv src2lo = tcg_temp_local_new(); + TCGv src2hi = tcg_temp_local_new(); + + tcg_gen_andi_tl(src1, cpu_gpr[rA(ctx->opcode)], 0xFF); + tcg_gen_andi_tl(src2, cpu_gpr[rB(ctx->opcode)], 0xFFFFFFFF); + + tcg_gen_andi_tl(src2lo, src2, 0xFF); + tcg_gen_shri_tl(src2hi, src2, 8); + tcg_gen_andi_tl(src2hi, src2hi, 0xFF); + + tcg_gen_brcond_tl(TCG_COND_GTU, src1, src2hi, lab1); + tcg_gen_brcond_tl(TCG_COND_LTU, src1, src2lo, lab1); + tcg_gen_movi_i32(cpu_crf[crfD(ctx->opcode)], 1 << CRF_GT); + tcg_gen_br(lab2); + gen_set_label(lab1); + + if (ctx->opcode & 0x00200000) { + tcg_gen_shri_tl(src2hi, src2, 24); + tcg_gen_andi_tl(src2hi, src2hi, 0xFF); + tcg_gen_shri_tl(src2lo, src2, 16); + tcg_gen_andi_tl(src2lo, src2lo, 0xFF); + tcg_gen_brcond_tl(TCG_COND_GTU, src1, src2hi, lab2); + tcg_gen_brcond_tl(TCG_COND_LTU, src1, src2lo, lab2); + tcg_gen_movi_i32(cpu_crf[crfD(ctx->opcode)], 1 << CRF_GT); + } + gen_set_label(lab2); + tcg_temp_free(src1); + tcg_temp_free(src2); + tcg_temp_free(src2lo); + tcg_temp_free(src2hi); +} + /* isel (PowerPC 2.03 specification) */ static void gen_isel(DisasContext *ctx) { @@ -9898,6 +9937,7 @@ 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(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), GEN_HANDLER(addi, 0x0E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(addic, 0x0C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), -- 2.7.4