From patchwork Thu Jun 24 10:54:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 12341849 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 709C4C48BDF for ; Thu, 24 Jun 2021 11:13:22 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3147D611CE for ; Thu, 24 Jun 2021 11:13:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3147D611CE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:41720 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lwNIP-0004p7-5a for qemu-devel@archiver.kernel.org; Thu, 24 Jun 2021 07:13:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42516) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lwN4f-0005RU-ES; Thu, 24 Jun 2021 06:59:09 -0400 Received: from out28-100.mail.aliyun.com ([115.124.28.100]:44552) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lwN4c-0005sa-Nm; Thu, 24 Jun 2021 06:59:09 -0400 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.07436302|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_system_inform|0.566827-0.00798608-0.425187; FP=0|0|0|0|0|-1|-1|-1; HT=ay29a033018047211; MF=zhiwei_liu@c-sky.com; NM=1; PH=DS; RN=6; RT=6; SR=0; TI=SMTPD_---.KXK7-XE_1624532340; Received: from roman-VirtualBox.hz.ali.com(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.KXK7-XE_1624532340) by smtp.aliyun-inc.com(10.147.42.16); Thu, 24 Jun 2021 18:59:00 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v3 05/37] target/riscv: SIMD 16-bit Shift Instructions Date: Thu, 24 Jun 2021 18:54:49 +0800 Message-Id: <20210624105521.3964-6-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210624105521.3964-1-zhiwei_liu@c-sky.com> References: <20210624105521.3964-1-zhiwei_liu@c-sky.com> Received-SPF: none client-ip=115.124.28.100; envelope-from=zhiwei_liu@c-sky.com; helo=out28-100.mail.aliyun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: palmer@dabbelt.com, bin.meng@windriver.com, Alistair.Francis@wdc.com, LIU Zhiwei Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Instructions include right arithmetic shift, right logic shift, and left shift. The shift can be an immediate or a register scalar. The right shift has rounding operation. And the left shift has saturation operation. Signed-off-by: LIU Zhiwei Reviewed-by: Alistair Francis --- target/riscv/helper.h | 9 ++ target/riscv/insn32.decode | 17 ++++ target/riscv/insn_trans/trans_rvp.c.inc | 59 ++++++++++++++ target/riscv/packed_helper.c | 104 ++++++++++++++++++++++++ 4 files changed, 189 insertions(+) diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 629ff13402..de7b4fc17d 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -1188,3 +1188,12 @@ DEF_HELPER_3(rsub8, tl, env, tl, tl) DEF_HELPER_3(ursub8, tl, env, tl, tl) DEF_HELPER_3(ksub8, tl, env, tl, tl) DEF_HELPER_3(uksub8, tl, env, tl, tl) + +DEF_HELPER_3(sra16, tl, env, tl, tl) +DEF_HELPER_3(sra16_u, tl, env, tl, tl) +DEF_HELPER_3(srl16, tl, env, tl, tl) +DEF_HELPER_3(srl16_u, tl, env, tl, tl) +DEF_HELPER_3(sll16, tl, env, tl, tl) +DEF_HELPER_3(ksll16, tl, env, tl, tl) +DEF_HELPER_3(kslra16, tl, env, tl, tl) +DEF_HELPER_3(kslra16_u, tl, env, tl, tl) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 13e1222296..44c497f28a 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -24,6 +24,7 @@ %sh5 20:5 %sh7 20:7 +%sh4 20:4 %csr 20:12 %rm 12:3 %nf 29:3 !function=ex_plus_1 @@ -61,6 +62,7 @@ @j .................... ..... ....... &j imm=%imm_j %rd @sh ...... ...... ..... ... ..... ....... &shift shamt=%sh7 %rs1 %rd +@sh4 ...... ...... ..... ... ..... ....... &shift shamt=%sh4 %rs1 %rd @csr ............ ..... ... ..... ....... %csr %rs1 %rd @atom_ld ..... aq:1 rl:1 ..... ........ ..... ....... &atomic rs2=0 %rs1 %rd @@ -775,3 +777,18 @@ rsub8 0000101 ..... ..... 000 ..... 1110111 @r ursub8 0010101 ..... ..... 000 ..... 1110111 @r ksub8 0001101 ..... ..... 000 ..... 1110111 @r uksub8 0011101 ..... ..... 000 ..... 1110111 @r + +sra16 0101000 ..... ..... 000 ..... 1110111 @r +sra16_u 0110000 ..... ..... 000 ..... 1110111 @r +srai16 0111000 0.... ..... 000 ..... 1110111 @sh4 +srai16_u 0111000 1.... ..... 000 ..... 1110111 @sh4 +srl16 0101001 ..... ..... 000 ..... 1110111 @r +srl16_u 0110001 ..... ..... 000 ..... 1110111 @r +srli16 0111001 0.... ..... 000 ..... 1110111 @sh4 +srli16_u 0111001 1.... ..... 000 ..... 1110111 @sh4 +sll16 0101010 ..... ..... 000 ..... 1110111 @r +slli16 0111010 0.... ..... 000 ..... 1110111 @sh4 +ksll16 0110010 ..... ..... 000 ..... 1110111 @r +kslli16 0111010 1.... ..... 000 ..... 1110111 @sh4 +kslra16 0101011 ..... ..... 000 ..... 1110111 @r +kslra16_u 0110011 ..... ..... 000 ..... 1110111 @r diff --git a/target/riscv/insn_trans/trans_rvp.c.inc b/target/riscv/insn_trans/trans_rvp.c.inc index 80bec35ac9..afafa49824 100644 --- a/target/riscv/insn_trans/trans_rvp.c.inc +++ b/target/riscv/insn_trans/trans_rvp.c.inc @@ -128,3 +128,62 @@ GEN_RVP_R_OOL(rsub8); GEN_RVP_R_OOL(ursub8); GEN_RVP_R_OOL(ksub8); GEN_RVP_R_OOL(uksub8); + +/* 16-bit Shift Instructions */ +GEN_RVP_R_OOL(sra16); +GEN_RVP_R_OOL(srl16); +GEN_RVP_R_OOL(sll16); +GEN_RVP_R_OOL(sra16_u); +GEN_RVP_R_OOL(srl16_u); +GEN_RVP_R_OOL(ksll16); +GEN_RVP_R_OOL(kslra16); +GEN_RVP_R_OOL(kslra16_u); + +static bool +rvp_shifti_ool(DisasContext *ctx, arg_shift *a, + void (* fn)(TCGv, TCGv_ptr, TCGv, TCGv)) +{ + TCGv src1, dst, shift; + + src1 = tcg_temp_new(); + dst = tcg_temp_new(); + + gen_get_gpr(src1, a->rs1); + shift = tcg_const_tl(a->shamt); + fn(dst, cpu_env, src1, shift); + gen_set_gpr(a->rd, dst); + + tcg_temp_free(src1); + tcg_temp_free(dst); + tcg_temp_free(shift); + return true; +} + +static inline bool +rvp_shifti(DisasContext *ctx, arg_shift *a, + void (* vecop)(TCGv, TCGv, target_long), + void (* op)(TCGv, TCGv_ptr, TCGv, TCGv)) +{ + if (!has_ext(ctx, RVP)) { + return false; + } + + if (a->rd && a->rs1 && vecop) { + vecop(cpu_gpr[a->rd], cpu_gpr[a->rs1], a->shamt); + return true; + } + return rvp_shifti_ool(ctx, a, op); +} + +#define GEN_RVP_SHIFTI(NAME, VECOP, OP) \ +static bool trans_##NAME(DisasContext *s, arg_shift *a) \ +{ \ + return rvp_shifti(s, a, VECOP, OP); \ +} + +GEN_RVP_SHIFTI(srai16, tcg_gen_vec_sar16i_tl, gen_helper_sra16); +GEN_RVP_SHIFTI(srli16, tcg_gen_vec_shr16i_tl, gen_helper_srl16); +GEN_RVP_SHIFTI(slli16, tcg_gen_vec_shl16i_tl, gen_helper_sll16); +GEN_RVP_SHIFTI(srai16_u, NULL, gen_helper_sra16_u); +GEN_RVP_SHIFTI(srli16_u, NULL, gen_helper_srl16_u); +GEN_RVP_SHIFTI(kslli16, NULL, gen_helper_ksll16); diff --git a/target/riscv/packed_helper.c b/target/riscv/packed_helper.c index 62db072204..7e31c2fe46 100644 --- a/target/riscv/packed_helper.c +++ b/target/riscv/packed_helper.c @@ -425,3 +425,107 @@ static inline void do_uksub8(CPURISCVState *env, void *vd, void *va, } RVPR(uksub8, 1, 1); + +/* 16-bit Shift Instructions */ +static inline void do_sra16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va; + uint8_t shift = *(uint8_t *)vb & 0xf; + d[i] = a[i] >> shift; +} + +RVPR(sra16, 1, 2); + +static inline void do_srl16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + uint16_t *d = vd, *a = va; + uint8_t shift = *(uint8_t *)vb & 0xf; + d[i] = a[i] >> shift; +} + +RVPR(srl16, 1, 2); + +static inline void do_sll16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + uint16_t *d = vd, *a = va; + uint8_t shift = *(uint8_t *)vb & 0xf; + d[i] = a[i] << shift; +} + +RVPR(sll16, 1, 2); + +static inline void do_sra16_u(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va; + uint8_t shift = *(uint8_t *)vb & 0xf; + + d[i] = vssra16(env, 0, a[i], shift); +} + +RVPR(sra16_u, 1, 2); + +static inline void do_srl16_u(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + uint16_t *d = vd, *a = va; + uint8_t shift = *(uint8_t *)vb & 0xf; + + d[i] = vssrl16(env, 0, a[i], shift); +} + +RVPR(srl16_u, 1, 2); + +static inline void do_ksll16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va, result; + uint8_t shift = *(uint8_t *)vb & 0xf; + + result = a[i] << shift; + if (shift > (clrsb32(a[i]) - 16)) { + env->vxsat = 0x1; + d[i] = (a[i] & INT16_MIN) ? INT16_MIN : INT16_MAX; + } else { + d[i] = result; + } +} + +RVPR(ksll16, 1, 2); + +static inline void do_kslra16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va; + int32_t shift = sextract32((*(target_ulong *)vb), 0, 5); + + if (shift >= 0) { + do_ksll16(env, vd, va, vb, i); + } else { + shift = -shift; + shift = (shift == 16) ? 15 : shift; + d[i] = a[i] >> shift; + } +} + +RVPR(kslra16, 1, 2); + +static inline void do_kslra16_u(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va; + int32_t shift = sextract32((*(uint32_t *)vb), 0, 5); + + if (shift >= 0) { + do_ksll16(env, vd, va, vb, i); + } else { + shift = -shift; + shift = (shift == 16) ? 15 : shift; + d[i] = vssra16(env, 0, a[i], shift); + } +} + +RVPR(kslra16_u, 1, 2);