From nobody Sat Jul 12 15:54:45 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1486017244172161.0857640105819; Wed, 1 Feb 2017 22:34:04 -0800 (PST) Received: from localhost ([::1]:54653 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZAy1-0000XN-5a for importer@patchew.org; Thu, 02 Feb 2017 01:34:01 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52558) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZ9kD-0007tw-RV for qemu-devel@nongnu.org; Thu, 02 Feb 2017 00:15:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cZ9k7-0004EX-Lh for qemu-devel@nongnu.org; Thu, 02 Feb 2017 00:15:41 -0500 Received: from ozlabs.org ([2401:3900:2:1::2]:56943) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cZ9k6-0004Ao-VF; Thu, 02 Feb 2017 00:15:35 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id 3vDSqZ0vCKz9s7X; Thu, 2 Feb 2017 16:15:00 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1486012506; bh=4/dVPoGukz0+fLUyakqkGtEl4WRIjLyJAuryG5yu9f8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I5JeaD45xy2dK+U7U5WpdLSHGOHgfJVtiXHLWWRyoatoif3tL5qiP0OqTLn4ZU6cF xnzwrGnw8HwI9xp6gNuuSqLXrVBt8U3P5dOx1DGEoA8FHp1qHluTVe5q9SCugJIdQe qxUrDbpCj48ytRx3b/q6Bb3lDyYJVR4w3zTvG/AY= From: David Gibson To: peter.maydell@linaro.org Date: Thu, 2 Feb 2017 16:14:12 +1100 Message-Id: <20170202051445.5735-75-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170202051445.5735-1-david@gibson.dropbear.id.au> References: <20170202051445.5735-1-david@gibson.dropbear.id.au> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2401:3900:2:1::2 Subject: [Qemu-devel] [PULL 074/107] ppc: Implement bcdsr. instruction X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, thuth@redhat.com, qemu-devel@nongnu.org, Jose Ricardo Ziviani , mdroth@linux.vnet.ibm.com, agraf@suse.de, aik@ozlabs.ru, qemu-ppc@nongnu.org, David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Jose Ricardo Ziviani bcdsr.: Decimal shift and round. This instruction works like bcds. however, when performing right shift, 1 will be added to the result if the last digit was >=3D 5. Signed-off-by: Jose Ricardo Ziviani Signed-off-by: David Gibson --- target/ppc/helper.h | 1 + target/ppc/int_helper.c | 48 +++++++++++++++++++++++++++++++++= ++++ target/ppc/translate/vmx-impl.inc.c | 1 + target/ppc/translate/vmx-ops.inc.c | 2 ++ 4 files changed, 52 insertions(+) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 161d537..3cac050 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -395,6 +395,7 @@ DEF_HELPER_4(bcdcpsgn, i32, avr, avr, avr, i32) DEF_HELPER_3(bcdsetsgn, i32, avr, avr, i32) DEF_HELPER_4(bcds, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdus, i32, avr, avr, avr, i32) +DEF_HELPER_4(bcdsr, i32, avr, avr, avr, i32) =20 DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xsaddqp, void, env, i32) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 9d88352..d309059 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -3143,6 +3143,54 @@ uint32_t helper_bcdus(ppc_avr_t *r, ppc_avr_t *a, pp= c_avr_t *b, uint32_t ps) return cr; } =20 +uint32_t helper_bcdsr(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t p= s) +{ + int cr; + int unused =3D 0; + int invalid =3D 0; + bool ox_flag =3D false; + int sgnb =3D bcd_get_sgn(b); + ppc_avr_t ret =3D *b; + ret.u64[LO_IDX] &=3D ~0xf; + +#if defined(HOST_WORDS_BIGENDIAN) + int i =3D a->s8[7]; + ppc_avr_t bcd_one =3D { .u64 =3D { 0, 0x10 } }; +#else + int i =3D a->s8[8]; + ppc_avr_t bcd_one =3D { .u64 =3D { 0x10, 0 } }; +#endif + + if (bcd_is_valid(b) =3D=3D false) { + return CRF_SO; + } + + if (unlikely(i > 31)) { + i =3D 31; + } else if (unlikely(i < -31)) { + i =3D -31; + } + + if (i > 0) { + ulshift(&ret.u64[LO_IDX], &ret.u64[HI_IDX], i * 4, &ox_flag); + } else { + urshift(&ret.u64[LO_IDX], &ret.u64[HI_IDX], -i * 4); + + if (bcd_get_digit(&ret, 0, &invalid) >=3D 5) { + bcd_add_mag(&ret, &ret, &bcd_one, &invalid, &unused); + } + } + bcd_put_digit(&ret, bcd_preferred_sgn(sgnb, ps), 0); + + cr =3D bcd_cmp_zero(&ret); + if (ox_flag) { + cr |=3D CRF_SO; + } + *r =3D ret; + + return cr; +} + void helper_vsbox(ppc_avr_t *r, ppc_avr_t *a) { int i; diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx= -impl.inc.c index fc54881..451abb5 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -1018,6 +1018,7 @@ GEN_BCD2(bcdsetsgn) GEN_BCD(bcdcpsgn); GEN_BCD(bcds); GEN_BCD(bcdus); +GEN_BCD(bcdsr); =20 static void gen_xpnd04_1(DisasContext *ctx) { diff --git a/target/ppc/translate/vmx-ops.inc.c b/target/ppc/translate/vmx-= ops.inc.c index cdd3abe..fa9c996 100644 --- a/target/ppc/translate/vmx-ops.inc.c +++ b/target/ppc/translate/vmx-ops.inc.c @@ -132,6 +132,8 @@ GEN_HANDLER_E_2(vprtybd, 0x4, 0x1, 0x18, 9, 0, PPC_NONE= , PPC2_ISA300), GEN_HANDLER_E_2(vprtybq, 0x4, 0x1, 0x18, 10, 0, PPC_NONE, PPC2_ISA300), =20 GEN_VXFORM_DUAL(vsubcuw, xpnd04_1, 0, 22, PPC_ALTIVEC, PPC_NONE), +GEN_VXFORM_300(bcdsr, 0, 23), +GEN_VXFORM_300(bcdsr, 0, 31), GEN_VXFORM_DUAL(vaddubs, vmul10uq, 0, 8, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM_DUAL(vadduhs, vmul10euq, 0, 9, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM(vadduws, 0, 10), --=20 2.9.3