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[189.204.159.171]) by smtp.gmail.com with ESMTPSA id x23sm3902825ood.28.2021.03.23.11.43.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Mar 2021 11:43:47 -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=7hjRKYvKwPhnZczNplHlGNdiwX+bsNrNu6SiB/+LyZA=; b=SQ+27xqYoHWPUGePhOitizEXdptaRcrdXHQgtC4NW9zjekptoDHGDF81yh0ntBfEG6 EMP2KScax0ugWNK1FwUDxaIiPrjEveOM0W6nxIhmyMcLBAyCdk8cG7PeiP+gYvsM8zz3 dQqKwVBIXCRCB8krnm70V4xRj3+NTy0SVi+gOPeImUCizWNF5i02wp0ehd2cvyolQgoo zM1v5dIbVyHq9qXwgyFE4a10Kgjrei35ihYJGb0R3EOvv14UQfU79N8PgiEu2PmN3oob yVbLiQAS5ETJEOUTDbOPns0z5TflCj3uPmUo6j5ZmuMwYBD2OYwjvLj0VEREQnTANLoa dWuw== 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=7hjRKYvKwPhnZczNplHlGNdiwX+bsNrNu6SiB/+LyZA=; b=FFygN3echDfi6l30ELVJApBS2FiFU7xLjxE7fExYap0Bz1IzQBQlafN/LhV6NB1IuP 0eCKfgNQY323nHe2++q9q6Jbg4/n+8rcbqKnT3cF/3HFTTyy6dLahWM6gKuZaf9cl5RB HnrA8Xed30dOw1ilrjXLbVqXXkYSjwoZ2WVoRQQlBmTsLKN1H+AfteDEHDrDJ9BoOcGB OTRUpNGKeHufMIzQ5RdmjfcTeKLfLiEjR4BWjLOLHLF7ZhBZrMq0WZUhE/Fh3CHgWTaw CRnOqVtZc2xqn63KcGcXiCJt3yVAUl5cQfT8Df5utVuy8JkQ/o1/QQwAEpWte6+F2rDy PA2w== X-Gm-Message-State: AOAM530TQzzBt+afaa8AHGR0ZT5brbcfG8pU2V5/8qHZ6KIn/OFu6ilU sy1XRpjIe/cJIaYs7sjnEzBqbrO4Z9pXr9iL X-Google-Smtp-Source: ABdhPJzu7vBnI7kjkVVd1shqGGiFs0FupDxDwwWwuHgeMGJcj+U9bnMmPSDEwB7prpZ+AKWVtofEcQ== X-Received: by 2002:a05:6808:b09:: with SMTP id s9mr4369537oij.36.1616525028288; Tue, 23 Mar 2021 11:43:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 04/10] target/ppc: Put dbcr0 single-step bits into hflags Date: Tue, 23 Mar 2021 12:43:34 -0600 Message-Id: <20210323184340.619757-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210323184340.619757-1-richard.henderson@linaro.org> References: <20210323184340.619757-1-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::230; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x230.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: 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" Because these bits were not in hflags, the code generated for single-stepping on BookE was essentially random. Recompute hflags when storing to dbcr0. Reviewed-by: David Gibson Signed-off-by: Richard Henderson --- target/ppc/helper_regs.c | 24 +++++++++++++++++------- target/ppc/misc_helper.c | 3 +++ target/ppc/translate.c | 11 ----------- 3 files changed, 20 insertions(+), 18 deletions(-) diff --git a/target/ppc/helper_regs.c b/target/ppc/helper_regs.c index df9673b90f..e345966b6b 100644 --- a/target/ppc/helper_regs.c +++ b/target/ppc/helper_regs.c @@ -114,13 +114,23 @@ void hreg_compute_hflags(CPUPPCState *env) hflags |=3D le << MSR_LE; } =20 - if (ppc_flags & POWERPC_FLAG_BE) { - QEMU_BUILD_BUG_ON(MSR_BE !=3D HFLAGS_BE); - msr_mask |=3D 1 << MSR_BE; - } - if (ppc_flags & POWERPC_FLAG_SE) { - QEMU_BUILD_BUG_ON(MSR_SE !=3D HFLAGS_SE); - msr_mask |=3D 1 << MSR_SE; + if (ppc_flags & POWERPC_FLAG_DE) { + target_ulong dbcr0 =3D env->spr[SPR_BOOKE_DBCR0]; + if (dbcr0 & DBCR0_ICMP) { + hflags |=3D 1 << HFLAGS_SE; + } + if (dbcr0 & DBCR0_BRT) { + hflags |=3D 1 << HFLAGS_BE; + } + } else { + if (ppc_flags & POWERPC_FLAG_BE) { + QEMU_BUILD_BUG_ON(MSR_BE !=3D HFLAGS_BE); + msr_mask |=3D 1 << MSR_BE; + } + if (ppc_flags & POWERPC_FLAG_SE) { + QEMU_BUILD_BUG_ON(MSR_SE !=3D HFLAGS_SE); + msr_mask |=3D 1 << MSR_SE; + } } =20 if (msr_is_64bit(env, msr)) { diff --git a/target/ppc/misc_helper.c b/target/ppc/misc_helper.c index b04b4d7c6e..002958be26 100644 --- a/target/ppc/misc_helper.c +++ b/target/ppc/misc_helper.c @@ -215,6 +215,9 @@ void helper_store_403_pbr(CPUPPCState *env, uint32_t nu= m, target_ulong value) =20 void helper_store_40x_dbcr0(CPUPPCState *env, target_ulong val) { + /* Bits 26 & 27 affect single-stepping. */ + hreg_compute_hflags(env); + /* Bits 28 & 29 affect reset or shutdown. */ store_40x_dbcr0(env, val); } =20 diff --git a/target/ppc/translate.c b/target/ppc/translate.c index a85b890bb0..7912495f28 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -7923,17 +7923,6 @@ static void ppc_tr_init_disas_context(DisasContextBa= se *dcbase, CPUState *cs) if ((hflags >> HFLAGS_BE) & 1) { ctx->singlestep_enabled |=3D CPU_BRANCH_STEP; } - if ((env->flags & POWERPC_FLAG_DE) && msr_de) { - ctx->singlestep_enabled =3D 0; - target_ulong dbcr0 =3D env->spr[SPR_BOOKE_DBCR0]; - if (dbcr0 & DBCR0_ICMP) { - ctx->singlestep_enabled |=3D CPU_SINGLE_STEP; - } - if (dbcr0 & DBCR0_BRT) { - ctx->singlestep_enabled |=3D CPU_BRANCH_STEP; - } - - } if (unlikely(ctx->base.singlestep_enabled)) { ctx->singlestep_enabled |=3D GDBSTUB_SINGLE_STEP; } --=20 2.25.1