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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]:44152 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jbjOS-0002Sw-JE for qemu-devel@archiver.kernel.org; Thu, 21 May 2020 07:29:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42102) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jbjNs-0001VQ-2A; Thu, 21 May 2020 07:29:08 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:54229) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jbjNr-0006Tn-13; Thu, 21 May 2020 07:29:07 -0400 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.0765337|-1; CH=blue; DM=|OVERLOAD|false|; DS=CONTINUE|ham_system_inform|0.0020033-6.25929e-05-0.997934; FP=0|0|0|0|0|-1|-1|-1; HT=e02c03306; MF=zhiwei_liu@c-sky.com; NM=1; PH=DS; RN=8; RT=8; SR=0; TI=SMTPD_---.HbeAXGn_1590060540; Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.HbeAXGn_1590060540) by smtp.aliyun-inc.com(10.147.40.200); Thu, 21 May 2020 19:29:01 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v8 52/62] target/riscv: vmfirst find-first-set mask bit Date: Thu, 21 May 2020 17:44:03 +0800 Message-Id: <20200521094413.10425-53-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200521094413.10425-1-zhiwei_liu@c-sky.com> References: <20200521094413.10425-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 Received-SPF: none client-ip=121.197.200.217; envelope-from=zhiwei_liu@c-sky.com; helo=smtp2200-217.mail.aliyun.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/21 05:19:14 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] 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, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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: richard.henderson@linaro.org, wxy194768@alibaba-inc.com, wenmeng_zhang@c-sky.com, alistair.francis@wdc.com, palmer@dabbelt.com, LIU Zhiwei Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: LIU Zhiwei Reviewed-by: Richard Henderson --- target/riscv/helper.h | 2 ++ target/riscv/insn32.decode | 1 + target/riscv/insn_trans/trans_rvv.inc.c | 32 +++++++++++++++++++++++++ target/riscv/vector_helper.c | 19 +++++++++++++++ 4 files changed, 54 insertions(+) diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 7ae41ebc2c..e78298e479 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -1097,3 +1097,5 @@ DEF_HELPER_6(vmornot_mm, void, ptr, ptr, ptr, ptr, env, i32) DEF_HELPER_6(vmxnor_mm, void, ptr, ptr, ptr, ptr, env, i32) DEF_HELPER_4(vmpopc_m, tl, ptr, ptr, env, i32) + +DEF_HELPER_4(vmfirst_m, tl, ptr, ptr, env, i32) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index decb7f773f..4c7706561a 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -554,6 +554,7 @@ vmnor_mm 011110 - ..... ..... 010 ..... 1010111 @r vmornot_mm 011100 - ..... ..... 010 ..... 1010111 @r vmxnor_mm 011111 - ..... ..... 010 ..... 1010111 @r vmpopc_m 010100 . ..... ----- 010 ..... 1010111 @r2_vm +vmfirst_m 010101 . ..... ----- 010 ..... 1010111 @r2_vm vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm vsetvl 1000000 ..... ..... 111 ..... 1010111 @r diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index 7792845e53..29aefa1534 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -2412,3 +2412,35 @@ static bool trans_vmpopc_m(DisasContext *s, arg_rmr *a) } return false; } + +/* vmfirst find-first-set mask bit */ +static bool trans_vmfirst_m(DisasContext *s, arg_rmr *a) +{ + if (vext_check_isa_ill(s)) { + TCGv_ptr src2, mask; + TCGv dst; + TCGv_i32 desc; + uint32_t data = 0; + data = FIELD_DP32(data, VDATA, MLEN, s->mlen); + data = FIELD_DP32(data, VDATA, VM, a->vm); + data = FIELD_DP32(data, VDATA, LMUL, s->lmul); + + mask = tcg_temp_new_ptr(); + src2 = tcg_temp_new_ptr(); + dst = tcg_temp_new(); + desc = tcg_const_i32(simd_desc(0, s->vlen / 8, data)); + + tcg_gen_addi_ptr(src2, cpu_env, vreg_ofs(s, a->rs2)); + tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); + + gen_helper_vmfirst_m(dst, mask, src2, cpu_env, desc); + gen_set_gpr(a->rd, dst); + + tcg_temp_free_ptr(mask); + tcg_temp_free_ptr(src2); + tcg_temp_free(dst); + tcg_temp_free_i32(desc); + return true; + } + return false; +} diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 75627d335d..38ecce1dc7 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -4561,3 +4561,22 @@ target_ulong HELPER(vmpopc_m)(void *v0, void *vs2, CPURISCVState *env, } return cnt; } + +/* vmfirst find-first-set mask bit*/ +target_ulong HELPER(vmfirst_m)(void *v0, void *vs2, CPURISCVState *env, + uint32_t desc) +{ + uint32_t mlen = vext_mlen(desc); + uint32_t vm = vext_vm(desc); + uint32_t vl = env->vl; + int i; + + for (i = 0; i < vl; i++) { + if (vm || vext_elem_mask(v0, mlen, i)) { + if (vext_elem_mask(vs2, mlen, i)) { + return i; + } + } + } + return -1LL; +}