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[97.126.112.211]) by smtp.gmail.com with ESMTPSA id b84-v6sm28179157pfm.123.2018.05.30.11.01.35 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 30 May 2018 11:01:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=n4+8RuZr2vOITB8cmfVyUiCIxF+yQylQx7PTF/yIixM=; b=Dl5Y5W4DHJgZqkXnw+IqhcCknC/CFQSYMHTdosnJwOfDzIymQPTunAiyApmPDMuuiW kldJ+zEslXfkuPJ7LIoVjd5EsWdzTab+wpDBsFgnOt0Ky5TnpriczwGZ2uOEQNl6tJ9R 8v43liJ1U8ka4JXlez0Bb7+Z5NUuRoYgt2oZ4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=n4+8RuZr2vOITB8cmfVyUiCIxF+yQylQx7PTF/yIixM=; b=Uyi0NvV/r126q5nNk/jI9UBJ1twx/StxHgiogwGuxI2U9REcZ+czpMjLcvLkz3KGQb 5oATw4dmSRp+YMJhV+NCyvp9nkrdWl+dQqmUmg4bIrafpr4QCIbatmHhgTFNwVk3STaf 2IZzPq/IsTePFvBExH+74gb4/CpFmgSl7LsMhSddFzETo9UhM3pBvSsU1Ap0JYJTt5Wo kcTsqoSkS27mapHc9j2h57kwfFzZ/q/5P9y0DbtyCU4R4m4onRERF2lOpLJqY6oBHPtb enzvxlhCfKXx6fS/IGaq9Y8BQKPbi7MlB/9qaUYwmgQJwI7p4yoDZVUjNTuWp5MYJuak Zj0g== X-Gm-Message-State: ALKqPwdmeSzk66XbCfIM02WKeLdjST/Vaysuv5QK0pmh5wsrlAhGQpy8 D014A+Yj3d8WOIJ+/65zFjw/1ttgSvc= X-Google-Smtp-Source: ADUXVKKVH9FrFM2wT05IWaXEcaW0zFxLiNK6/bj7xTvOnXtcz083u38w3tM9i+gUz0MaK4mLIDwmmQ== X-Received: by 2002:a17:902:74c8:: with SMTP id f8-v6mr3832181plt.317.1527703297024; Wed, 30 May 2018 11:01:37 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Wed, 30 May 2018 11:01:11 -0700 Message-Id: <20180530180120.13355-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180530180120.13355-1-richard.henderson@linaro.org> References: <20180530180120.13355-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::236 Subject: [Qemu-devel] [PATCH v3b 09/18] target/arm: Implement SVE vector splice (predicated) 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: peter.maydell@linaro.org, qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/helper-sve.h | 2 ++ target/arm/sve_helper.c | 37 +++++++++++++++++++++++++++++++++++++ target/arm/translate-sve.c | 13 +++++++++++++ target/arm/sve.decode | 3 +++ 4 files changed, 55 insertions(+) diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h index 3b7c54905d..c3f8a2b502 100644 --- a/target/arm/helper-sve.h +++ b/target/arm/helper-sve.h @@ -479,6 +479,8 @@ DEF_HELPER_FLAGS_4(sve_rbit_h, TCG_CALL_NO_RWG, void, p= tr, ptr, ptr, i32) DEF_HELPER_FLAGS_4(sve_rbit_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_4(sve_rbit_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32) =20 +DEF_HELPER_FLAGS_5(sve_splice, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, = i32) + DEF_HELPER_FLAGS_5(sve_and_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr= , i32) DEF_HELPER_FLAGS_5(sve_bic_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr= , i32) DEF_HELPER_FLAGS_5(sve_eor_pppp, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr= , i32) diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index f8579a25e3..f6d4b2139a 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -2108,3 +2108,40 @@ int32_t HELPER(sve_last_active_element)(void *vg, ui= nt32_t pred_desc) =20 return last_active_element(vg, DIV_ROUND_UP(oprsz, 8), esz); } + +void HELPER(sve_splice)(void *vd, void *vn, void *vm, void *vg, uint32_t d= esc) +{ + intptr_t opr_sz =3D simd_oprsz(desc) / 8; + int esz =3D simd_data(desc); + uint64_t pg, first_g, last_g, len, mask =3D pred_esz_masks[esz]; + intptr_t i, first_i, last_i; + ARMVectorReg tmp; + + first_i =3D last_i =3D 0; + first_g =3D last_g =3D 0; + + /* Find the extent of the active elements within VG. */ + for (i =3D QEMU_ALIGN_UP(opr_sz, 8) - 8; i >=3D 0; i -=3D 8) { + pg =3D *(uint64_t *)(vg + i) & mask; + if (pg) { + if (last_g =3D=3D 0) { + last_g =3D pg; + last_i =3D i; + } + first_g =3D pg; + first_i =3D i; + } + } + + len =3D 0; + if (first_g !=3D 0) { + first_i =3D first_i * 8 + ctz64(first_g); + last_i =3D last_i * 8 + 63 - clz64(last_g); + len =3D last_i - first_i + (1 << esz); + if (vd =3D=3D vm) { + vm =3D memcpy(&tmp, vm, opr_sz * 8); + } + swap_memmove(vd, vn + first_i, len); + } + swap_memmove(vd + len, vm, opr_sz * 8 - len); +} diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 90561a8b50..cf3624b439 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -2671,6 +2671,19 @@ static bool trans_RBIT(DisasContext *s, arg_rpr_esz = *a, uint32_t insn) return do_zpz_ool(s, a, fns[a->esz]); } =20 +static bool trans_SPLICE(DisasContext *s, arg_rprr_esz *a, uint32_t insn) +{ + if (sve_access_check(s)) { + unsigned vsz =3D vec_full_reg_size(s); + tcg_gen_gvec_4_ool(vec_full_reg_offset(s, a->rd), + vec_full_reg_offset(s, a->rn), + vec_full_reg_offset(s, a->rm), + pred_full_reg_offset(s, a->pg), + vsz, vsz, a->esz, gen_helper_sve_splice); + } + return true; +} + /* *** SVE Memory - 32-bit Gather and Unsized Contiguous Group */ diff --git a/target/arm/sve.decode b/target/arm/sve.decode index 95eb4968a9..a9fa631252 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -463,6 +463,9 @@ REVH 00000101 .. 1001 01 100 ... ..... .....= @rd_pg_rn REVW 00000101 .. 1001 10 100 ... ..... ..... @rd_pg_rn RBIT 00000101 .. 1001 11 100 ... ..... ..... @rd_pg_rn =20 +# SVE vector splice (predicated) +SPLICE 00000101 .. 101 100 100 ... ..... ..... @rdn_pg_rm + ### SVE Predicate Logical Operations Group =20 # SVE predicate logical operations --=20 2.17.0