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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id n10sm18891677wre.95.2021.06.07.09.59.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Jun 2021 09:59:04 -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 :mime-version:content-transfer-encoding; bh=2oJrX54+hHuJxkwNX+ULxYMNiVeTFery1qUjoDjgSmg=; b=uliYyc0urce3GNKzw8b7WmAfbZjYNj3o+fRRdI0WkiSRgZKHwnlceOjApEH+qn+B5I TLY8M1yVhTpF9gx1qZ78Jmu0qJFg9Yo0wAATBVqZIiIELYVWMO8RR0YW8AswcJZq5znr OZkVmh99Fw/RQssVgm/WWs7ERPagI/tMuEnZE1yOMdRjBY5axQhD/IDaQtUE7zHJx11m 1lefekegqupng0w9I8igyhr4CJsq/bNf3zCqzbugET4hjGIWeDBuxwlrE0C5NaIAzvGf SRg4sXfXrQvMHQ8BdqEpJ3125BVQoBuDwdbFsTSn9ePB82Uf/TVcPAMZU+VD5RhcPp9f XOBw== 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:mime-version:content-transfer-encoding; bh=2oJrX54+hHuJxkwNX+ULxYMNiVeTFery1qUjoDjgSmg=; b=D3zzPL6qhjhIRi4hqnDZ74xKVX6cPdmFirU7Njc2nzmk6aqYqdZBnP81XdMTJejhcZ HybCD5SuisSUYK2ShBNwNA60KQYqV+eqpn2ImyMZs8iw9Lw2UGl4fnexyLagkoFKE9dY 2p6GOqbAUuJS/mTbBMFeiJFIVA6Q8Gk14NnWpgzz6FquTY8npoTQIyPgC6Of9AMFgByo egs1fZzZcg6H0OZkuUSy2MxUpZeZ3bnIzlTuJqdvmjhSWP0dqzBxDYIS7+FgCrU+1XxH RQV8NS0RlKfnkpgU8Trj/D+XoqO0FMI27G66i6uvmcou0/Yatn7Pc10X3KWzGu4R79rx b5bQ== X-Gm-Message-State: AOAM533vKIw843HR91+4XiJlSQQ8w8tf8TjR5uQ+ZIqS2+K/Da2Qppf4 xd9UjL6H1/ibHGAG6YmdUBWpSQ== X-Google-Smtp-Source: ABdhPJz0ZEHgWD3LoF55JaTgoCy01U6qHHHDNGHHUZDX4OIBx2y3VSV6wwancGcBba3EJXwGrx5Z1Q== X-Received: by 2002:a05:600c:2284:: with SMTP id 4mr17791680wmf.146.1623085144615; Mon, 07 Jun 2021 09:59:04 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 52/55] target/arm: Implement MVE VCADD Date: Mon, 7 Jun 2021 17:58:18 +0100 Message-Id: <20210607165821.9892-53-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210607165821.9892-1-peter.maydell@linaro.org> References: <20210607165821.9892-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32c; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 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: Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Implement the MVE VCADD insn, which performs a complex add with rotate. Note that the size=3D0b11 encoding is VSBC. The architecture grants some leeway for the "destination and Vm source overlap" case for the size MO_32 case, but we choose not to make use of it, instead always calculating all 16 bytes worth of results before setting the destination register. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/helper-mve.h | 8 ++++++++ target/arm/mve.decode | 7 ++++++- target/arm/mve_helper.c | 31 +++++++++++++++++++++++++++++++ target/arm/translate-mve.c | 7 +++++++ 4 files changed, 52 insertions(+), 1 deletion(-) diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h index 686e5d9a39b..6e345470cbb 100644 --- a/target/arm/helper-mve.h +++ b/target/arm/helper-mve.h @@ -251,6 +251,14 @@ DEF_HELPER_FLAGS_4(mve_vrhadduw, TCG_CALL_NO_WG, void,= env, ptr, ptr, ptr) DEF_HELPER_FLAGS_5(mve_vadc, TCG_CALL_NO_WG, i32, env, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(mve_vsbc, TCG_CALL_NO_WG, i32, env, ptr, ptr, ptr, i32) =20 +DEF_HELPER_FLAGS_4(mve_vcadd90b, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) +DEF_HELPER_FLAGS_4(mve_vcadd90h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) +DEF_HELPER_FLAGS_4(mve_vcadd90w, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) + +DEF_HELPER_FLAGS_4(mve_vcadd270b, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) +DEF_HELPER_FLAGS_4(mve_vcadd270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) +DEF_HELPER_FLAGS_4(mve_vcadd270w, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr) + DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, = i32) DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, = i32) DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, = i32) diff --git a/target/arm/mve.decode b/target/arm/mve.decode index 6a4aae7a1fc..c0979f3941b 100644 --- a/target/arm/mve.decode +++ b/target/arm/mve.decode @@ -164,7 +164,12 @@ VRHADD_S 111 0 1111 0 . .. ... 0 ... 0 0001 . = 1 . 0 ... 0 @2op VRHADD_U 111 1 1111 0 . .. ... 0 ... 0 0001 . 1 . 0 ... 0 @2op =20 VADC 1110 1110 0 . 11 ... 0 ... . 1111 . 0 . 0 ... 0 @vadc -VSBC 1111 1110 0 . 11 ... 0 ... . 1111 . 0 . 0 ... 0 @vadc + +{ + VCADD90 1111 1110 0 . .. ... 0 ... 0 1111 . 0 . 0 ... 0 @2op + VCADD270 1111 1110 0 . .. ... 0 ... 1 1111 . 0 . 0 ... 0 @2op + VSBC 1111 1110 0 . 11 ... 0 ... . 1111 . 0 . 0 ... 0 @vadc +} =20 # Vector miscellaneous =20 diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c index e07f12c8389..2c8ef25b208 100644 --- a/target/arm/mve_helper.c +++ b/target/arm/mve_helper.c @@ -610,6 +610,37 @@ DO_2OP_U(vrhaddu, DO_RHADD_U) DO_VADC(vadc, ) DO_VADC(vsbc, DO_NOT) =20 +#define DO_VCADD(OP, ESIZE, TYPE, H, FN0, FN1) \ + void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vn, void= *vm) \ + { \ + TYPE *d =3D vd, *n =3D vn, *m =3D vm; = \ + uint16_t mask =3D mve_element_mask(env); \ + unsigned e; \ + TYPE r[16 / ESIZE]; \ + /* Calculate all results first to avoid overwriting inputs */ \ + for (e =3D 0; e < 16 / ESIZE; e++) { \ + if (!(e & 1)) { \ + r[e] =3D FN0(n[H(e)], m[H(e + 1)]); \ + } else { \ + r[e] =3D FN1(n[H(e)], m[H(e - 1)]); \ + } \ + } \ + for (e =3D 0; e < 16 / ESIZE; e++, mask >>=3D ESIZE) { = \ + uint64_t bytemask =3D mask_to_bytemask##ESIZE(mask); \ + d[H(e)] &=3D ~bytemask; \ + d[H(e)] |=3D (r[e] & bytemask); \ + } \ + mve_advance_vpt(env); \ + } + +#define DO_VCADD_ALL(OP, FN0, FN1) \ + DO_VCADD(OP##b, 1, int8_t, H1, FN0, FN1) \ + DO_VCADD(OP##h, 2, int16_t, H1, FN0, FN1) \ + DO_VCADD(OP##w, 4, int32_t, H1, FN0, FN1) + +DO_VCADD_ALL(vcadd90, DO_SUB, DO_ADD) +DO_VCADD_ALL(vcadd270, DO_ADD, DO_SUB) + static inline int32_t do_sat_bhw(int64_t val, int64_t min, int64_t max, bo= ol *s) { if (val > max) { diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c index 2ed499a6de2..8e3989b0176 100644 --- a/target/arm/translate-mve.c +++ b/target/arm/translate-mve.c @@ -440,6 +440,13 @@ DO_2OP(VQRDMLSDH, vqrdmlsdh) DO_2OP(VQRDMLSDHX, vqrdmlsdhx) DO_2OP(VRHADD_S, vrhadds) DO_2OP(VRHADD_U, vrhaddu) +/* + * VCADD Qd =3D=3D Qm at size MO_32 is UNPREDICTABLE; we choose not to dia= gnose + * so we can reuse the DO_2OP macro. (Our implementation calculates the + * "expected" results in this case.) + */ +DO_2OP(VCADD90, vcadd90) +DO_2OP(VCADD270, vcadd270) =20 static bool trans_VQDMULLB(DisasContext *s, arg_2op *a) { --=20 2.20.1