From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45022) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bN22D-00020M-7y for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bN229-0000DW-10 for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:52 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:45375) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bN228-0000D7-PV for qemu-devel@nongnu.org; Tue, 12 Jul 2016 14:03:48 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u6CI3iJT111440 for ; Tue, 12 Jul 2016 14:03:48 -0400 Received: from e23smtp01.au.ibm.com (e23smtp01.au.ibm.com [202.81.31.143]) by mx0a-001b2d01.pphosted.com with ESMTP id 24539amy0e-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 12 Jul 2016 14:03:47 -0400 Received: from localhost by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Jul 2016 04:03:45 +1000 From: Nikunj A Dadhania Date: Tue, 12 Jul 2016 23:33:21 +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: <1468346602-20700-6-git-send-email-nikunj@linux.vnet.ibm.com> Subject: [Qemu-devel] [RFC 5/6] target-ppc: add modulo word operations 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 Adding following instructions: moduw: Modulo Unsigned Word modsw: Modulo Signed Word Signed-off-by: Nikunj A Dadhania --- target-ppc/translate.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 8de217f..c505684 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -1178,6 +1178,54 @@ GEN_DIVE(divde, divde, 0); GEN_DIVE(divdeo, divde, 1); #endif +static inline void gen_op_arith_modw(DisasContext *ctx, TCGv ret, TCGv arg1, + TCGv arg2, int sign) +{ + TCGLabel *l1 = gen_new_label(); + TCGLabel *l2 = gen_new_label(); + TCGv_i32 t0 = tcg_temp_local_new_i32(); + TCGv_i32 t1 = tcg_temp_local_new_i32(); + TCGv_i32 t2 = tcg_temp_local_new_i32(); + + tcg_gen_trunc_tl_i32(t0, arg1); + tcg_gen_trunc_tl_i32(t1, arg2); + tcg_gen_brcondi_i32(TCG_COND_EQ, t1, 0, l1); + if (sign) { + TCGLabel *l3 = gen_new_label(); + tcg_gen_brcondi_i32(TCG_COND_NE, t1, -1, l3); + tcg_gen_brcondi_i32(TCG_COND_EQ, t0, INT32_MIN, l1); + gen_set_label(l3); + tcg_gen_div_i32(t2, t0, t1); + } else { + tcg_gen_divu_i32(t2, t0, t1); + } + tcg_gen_mul_i32(t2, t2, t1); + tcg_gen_sub_i32(t2, t0, t2); + tcg_gen_br(l2); + gen_set_label(l1); + if (sign) { + tcg_gen_sari_i32(t2, t0, 31); + } else { + tcg_gen_movi_i32(t2, 0); + } + gen_set_label(l2); + tcg_gen_extu_i32_tl(ret, t2); + tcg_temp_free_i32(t0); + tcg_temp_free_i32(t1); + tcg_temp_free_i32(t2); +} + +#define GEN_INT_ARITH_MODW(name, opc3, sign) \ +static void glue(gen_, name)(DisasContext *ctx) \ +{ \ + gen_op_arith_modw(ctx, cpu_gpr[rD(ctx->opcode)], \ + cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \ + sign); \ +} + +GEN_INT_ARITH_MODW(modsw, 0x18, 1); +GEN_INT_ARITH_MODW(moduw, 0x08, 0); + /* mulhw mulhw. */ static void gen_mulhw(DisasContext *ctx) { @@ -10244,6 +10292,8 @@ GEN_HANDLER_E(divwe, 0x1F, 0x0B, 0x0D, 0, PPC_NONE, PPC2_DIVE_ISA206), GEN_HANDLER_E(divweo, 0x1F, 0x0B, 0x1D, 0, PPC_NONE, PPC2_DIVE_ISA206), GEN_HANDLER_E(divweu, 0x1F, 0x0B, 0x0C, 0, PPC_NONE, PPC2_DIVE_ISA206), GEN_HANDLER_E(divweuo, 0x1F, 0x0B, 0x1C, 0, PPC_NONE, PPC2_DIVE_ISA206), +GEN_HANDLER_E(modsw, 0x1F, 0x0B, 0x18, 0x00000001, PPC_NONE, PPC2_ISA300), +GEN_HANDLER_E(moduw, 0x1F, 0x0B, 0x08, 0x00000001, PPC_NONE, PPC2_ISA300), #if defined(TARGET_PPC64) #undef GEN_INT_ARITH_DIVD -- 2.7.4