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[97.126.123.70]) by smtp.gmail.com with ESMTPSA id g69sm6824842pje.34.2020.03.12.12.42.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Mar 2020 12:42:41 -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=Smx0MhjIAblCuxDsW4fQawwrkcOGFEYFkfhp999nt6s=; b=cbH31Di9eWnm7xBxmIPPoPDx6u3hvM44tAQf8SBzLmev6t6MsJ6JKpAggJ1kdMIwfr 29QLsWOLKIV/GBdBFAAos/1SSoYkdRQilSvqfqKDFGXMwK9VS3y9KBtq3uMMPdZRCweJ SSRyK9dc4ZfGdnxxXSZQC5PM2CXC7+sEe9ASQOUS0crepDcrmxQvZW65dDSxQ7kaZvH6 zGNBjwLwSrE8O2nPwLsuYr1Df93Ch4zHAUKTJanlZW0WmY/47IveniyARmTirq4oVHt9 Pyz6vC5hjrOVfaDZD5vkb0STwSCM16TKFFs1xGqFQUNSEauidiYeFy6byIk5AcFOulJ/ 8SbA== 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=Smx0MhjIAblCuxDsW4fQawwrkcOGFEYFkfhp999nt6s=; b=UfZN/wO6DVkMHPonQNeHVnfCjAhxp5pXCeCkJDap2fO67V3VcsqGQw42a6XD0wgIae thGaFkdxsAGCTPfyr1OOBDW3qjxKy80JbpCvhN+m+QwVQL0ixubmEsNJkvTzQS3DhseX MNWZjBZb9LGSIpN/8hU2jbAO9zEuYlY823KvuxYy+CLg4ChVk3lZ7uaJt9m8KatRrXKB 8BzvZqhzwzVFCQ6oTNrs0aF1jpgBDMFpMobBGYGoOGJo7FrsiOAfsTniVImHLH3UweF1 Q9nLGhu3fxYHrNSDv4bRRxvDSeJAvrav9wOzDiGM59D0ji3wsaZ6iU553fSf6J6Rb5fl q7qg== X-Gm-Message-State: ANhLgQ3fPkt4d5d39rMcFuG1H971kh06LBmFbGcrgXplkRKjGtxdHg1Q w9aPunw3X1bujl4GoiA146lhy3fojCM= X-Google-Smtp-Source: ADFU+vsUYgo0QV0IXMcrceFM0NBZFcc5/in0k4BkSy9QTqsscMASK4d+LJD/JrBlupmDKJw33F3Jaw== X-Received: by 2002:a62:be0a:: with SMTP id l10mr10243743pff.110.1584042162090; Thu, 12 Mar 2020 12:42:42 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v6 16/42] target/arm: Implement the STGP instruction Date: Thu, 12 Mar 2020 12:41:53 -0700 Message-Id: <20200312194219.24406-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200312194219.24406-1-richard.henderson@linaro.org> References: <20200312194219.24406-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::443 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: peter.maydell@linaro.org, qemu-arm@nongnu.org, alex.bennee@linaro.org 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" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- v3: Handle atomicity, require pre-cleaned address. v6: Fix constant offset shift, non-checked address, use pre-computed ata. --- target/arm/translate-a64.c | 29 ++++++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index b99973b5b1..048140ddc0 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -2735,7 +2735,7 @@ static void disas_ld_lit(DisasContext *s, uint32_t in= sn) * +-----+-------+---+---+-------+---+-------+-------+------+------+ * * opc: LDP/STP/LDNP/STNP 00 -> 32 bit, 10 -> 64 bit - * LDPSW 01 + * LDPSW/STGP 01 * LDP/STP/LDNP/STNP (SIMD) 00 -> 32 bit, 01 -> 64 bit, 10 -> 128 bit * V: 0 -> GPR, 1 -> Vector * idx: 00 -> signed offset with non-temporal hint, 01 -> post-index, @@ -2760,6 +2760,7 @@ static void disas_ldst_pair(DisasContext *s, uint32_t= insn) bool is_signed =3D false; bool postindex =3D false; bool wback =3D false; + bool set_tag =3D false; =20 TCGv_i64 clean_addr, dirty_addr; =20 @@ -2772,6 +2773,14 @@ static void disas_ldst_pair(DisasContext *s, uint32_= t insn) =20 if (is_vector) { size =3D 2 + opc; + } else if (opc =3D=3D 1 && !is_load) { + /* STGP */ + if (!dc_isar_feature(aa64_mte_insn_reg, s) || index =3D=3D 0) { + unallocated_encoding(s); + return; + } + size =3D 3; + set_tag =3D true; } else { size =3D 2 + extract32(opc, 1, 1); is_signed =3D extract32(opc, 0, 1); @@ -2812,7 +2821,7 @@ static void disas_ldst_pair(DisasContext *s, uint32_t= insn) return; } =20 - offset <<=3D size; + offset <<=3D (set_tag ? LOG2_TAG_GRANULE : size); =20 if (rn =3D=3D 31) { gen_check_sp_alignment(s); @@ -2822,8 +2831,22 @@ static void disas_ldst_pair(DisasContext *s, uint32_= t insn) if (!postindex) { tcg_gen_addi_i64(dirty_addr, dirty_addr, offset); } - clean_addr =3D clean_data_tbi(s, dirty_addr); =20 + if (set_tag) { + if (!s->ata) { + /* + * TODO: We could rely on the stores below, at least for + * system mode, if we arrange to add MO_ALIGN_16. + */ + gen_helper_stg_stub(cpu_env, dirty_addr); + } else if (tb_cflags(s->base.tb) & CF_PARALLEL) { + gen_helper_stg_parallel(cpu_env, dirty_addr, dirty_addr); + } else { + gen_helper_stg(cpu_env, dirty_addr, dirty_addr); + } + } + + clean_addr =3D clean_data_tbi(s, dirty_addr); if (is_vector) { if (is_load) { do_fp_ld(s, rt, clean_addr, size); --=20 2.20.1