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[187.189.51.144]) by smtp.gmail.com with ESMTPSA id l129sm5602078qkd.76.2021.03.12.17.00.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Mar 2021 17:00:33 -0800 (PST) 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=nDEzeJHZqdUXe/dXYq7qR5PEy35VBqTIPDXHrdEdgcc=; b=rdX/gwg0Drc1E7xFQw2PVwZmhkKIC/HII37i3ThQJ1jXFfdR7rHuwgGyIF7qUF+yvT QZjCV7AWVHyBP814ChDIMkubbwRch8EPQGPh8Cq5Lp0aQRQ53lgawxg23js2FKBI0XJc KTNIoXf0UKBiy4BPh9LTXjWWkVFMmVhfxtjK8mAUIDCNp4ExvEXHfUqEqyKXOiTN0t9j o0fTeo/jNMDuh5g00X9kfdFE2SYp4d1P7WCxTyUdi8ZXb2y/i/x5GAG7J4qcGvyv5YjR mgUeF0al5Q6fU3uveOir69l+QzUPCJPFOlLtW96motydU7jMs+EIZDatXlZUUbWwty9C i+hw== 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=nDEzeJHZqdUXe/dXYq7qR5PEy35VBqTIPDXHrdEdgcc=; b=dErKJQx6HIlWyM+Qd9gGpoJgDLf3ikc37i5YuUahAFoljoZuzJAvG2b3AG5A2Sxdet qNeL3cfDETPtiSTyFlwcNNafr7pde3/k6qYjPl2XsyLUz4/WFspcoBE1570orxGlLRyl bVre87FKU1tKEolhtNfFls9CkiIpsjfwTEsaFZgsFLJucaVTB8jktcRyWTJz8kGTvQr7 /riohpXaOxaKKLLnWOZc8qIQ3ADc2Sx9qtRGOVR6hKS5Mx81q65uJBdnGGUm/Vq4RB9v 96XkiCwxdbKWxe/cPvNWsM4a9hHSVSDrpihfFnme1mLrQL7LgHw/PLmYQVjC/eym/t5z Mr2Q== X-Gm-Message-State: AOAM533XFVZEtuDOiNMg/jODu3AaaCMkwsZKZ84z/mab5Zio9dDKrMxT iq79Dm4g3djZL7VUcwfO/KDQBlkdYcdAnKst X-Google-Smtp-Source: ABdhPJwq9m7Hke47Q1t6+9cN1FxtfgmHBcM8gn5MJXWgCjVSSwCqI3wnJq5rUc3CcXhseRgnyR2FIQ== X-Received: by 2002:a05:6214:553:: with SMTP id ci19mr969240qvb.18.1615597233357; Fri, 12 Mar 2021 17:00:33 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 10/15] target/ppc: Create helper_scv Date: Fri, 12 Mar 2021 19:00:13 -0600 Message-Id: <20210313010018.819153-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210313010018.819153-1-richard.henderson@linaro.org> References: <20210313010018.819153-1-richard.henderson@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=2607:f8b0:4864:20::f2f; envelope-from=richard.henderson@linaro.org; helo=mail-qv1-xf2f.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, SPF_PASS=-0.001 autolearn=unavailable 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: ivan@vmfacility.fr, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Perform the test against FSCR_SCV at runtime, in the helper. This means we can remove the incorrect set against SCV in ppc_tr_init_disas_context and do not need to add an HFLAGS bit. Signed-off-by: Richard Henderson --- target/ppc/helper.h | 1 + target/ppc/excp_helper.c | 9 +++++++++ target/ppc/translate.c | 20 +++++++------------- 3 files changed, 17 insertions(+), 13 deletions(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 6a4dccf70c..513066d54d 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -13,6 +13,7 @@ DEF_HELPER_1(rfci, void, env) DEF_HELPER_1(rfdi, void, env) DEF_HELPER_1(rfmci, void, env) #if defined(TARGET_PPC64) +DEF_HELPER_2(scv, noreturn, env, i32) DEF_HELPER_2(pminsn, void, env, i32) DEF_HELPER_1(rfid, void, env) DEF_HELPER_1(rfscv, void, env) diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index 85de7e6c90..5c95e0c103 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -1130,6 +1130,15 @@ void helper_store_msr(CPUPPCState *env, target_ulong= val) } =20 #if defined(TARGET_PPC64) +void helper_scv(CPUPPCState *env, uint32_t lev) +{ + if (env->spr[SPR_FSCR] & (1ull << FSCR_SCV)) { + raise_exception_err(env, POWERPC_EXCP_SYSCALL_VECTORED, lev); + } else { + raise_exception_err(env, POWERPC_EXCP_FU, FSCR_IC_SCV); + } +} + void helper_pminsn(CPUPPCState *env, powerpc_pm_insn_t insn) { CPUState *cs; diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 7912495f28..d48c554290 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -173,7 +173,6 @@ struct DisasContext { bool vsx_enabled; bool spe_enabled; bool tm_enabled; - bool scv_enabled; bool gtse; ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */ int singlestep_enabled; @@ -4081,15 +4080,16 @@ static void gen_sc(DisasContext *ctx) #if !defined(CONFIG_USER_ONLY) static void gen_scv(DisasContext *ctx) { - uint32_t lev; + uint32_t lev =3D (ctx->opcode >> 5) & 0x7F; =20 - if (unlikely(!ctx->scv_enabled)) { - gen_exception_err(ctx, POWERPC_EXCP_FU, FSCR_IC_SCV); - return; + /* Set the PC back to the faulting instruction. */ + if (ctx->exception =3D=3D POWERPC_EXCP_NONE) { + gen_update_nip(ctx, ctx->base.pc_next - 4); } + gen_helper_scv(cpu_env, tcg_constant_i32(lev)); =20 - lev =3D (ctx->opcode >> 5) & 0x7F; - gen_exception_err(ctx, POWERPC_SYSCALL_VECTORED, lev); + /* This need not be exact, just not POWERPC_EXCP_NONE */ + ctx->exception =3D POWERPC_SYSCALL_VECTORED; } #endif #endif @@ -7907,12 +7907,6 @@ static void ppc_tr_init_disas_context(DisasContextBa= se *dcbase, CPUState *cs) ctx->spe_enabled =3D (hflags >> HFLAGS_SPE) & 1; ctx->altivec_enabled =3D (hflags >> HFLAGS_VR) & 1; ctx->vsx_enabled =3D (hflags >> HFLAGS_VSX) & 1; - if ((env->flags & POWERPC_FLAG_SCV) - && (env->spr[SPR_FSCR] & (1ull << FSCR_SCV))) { - ctx->scv_enabled =3D true; - } else { - ctx->scv_enabled =3D false; - } ctx->tm_enabled =3D (hflags >> HFLAGS_TM) & 1; ctx->gtse =3D !!(env->spr[SPR_LPCR] & LPCR_GTSE); =20 --=20 2.25.1