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[174.21.142.130]) by smtp.gmail.com with ESMTPSA id h22-20020a056a001a5600b004f7c17b291asm5101357pfv.87.2022.03.16.22.06.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 22:06:12 -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=5de5JN0djpoCpESfODi2INQYJ/S5KNFn/Rt19ewlkfA=; b=SGOpv71IaKANlR+ST5w88ZsiGxfarPuTYBpEO79CszyARAtHQ+aznHE/icIoGGE3VL Iro4hZrMjQDOFTRCoTempDhujfBmUVWKXcPfNOE8JkP/TXxXEt3Z0g4rQwBGxW3uBkQF +E11P64cY78YRFZGKjR2F3HS1MwAgKwvrsIJhvAnkuRCCr5HYquZKpaLasDL11Ov/aIr oEeo2IbV+g7v1+qPtj/Dw3DxKxYSzWZaGLiAJ/D66zfXiMFdEkjuSu0M9ptOZXH/z+Ad fSISgtntkQBbIoVtEKILkzm99tegdiSp7LsaWNkPXqHzLo7+BdlRgb+h2tcfg9PNRqzk K7UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=5de5JN0djpoCpESfODi2INQYJ/S5KNFn/Rt19ewlkfA=; b=YUZT0yLCPXPj27WQM/2ybLDR9Fa35LWogNIgvigIryKaw69zKpUWrFcl9kiJcYWZii N63njljDsVuUiHPqJNX3a8riHzDY1Vtz1sUrpwmT5fGT6SqOXHdzaLSIQiIIu+QkTxxB VuwT6Urp0QZE30fxs7rHjI7Bv5nk/HFD6vHlh3xv8VNKUkH1Qfk7z53mcv0pwP5+Dmeq ljgw7yx/mEPee2jRI4rW72cOxrimkNeldcySPmzOwZi2HxtdLPrVCK4pC1RyM6X9uhxf 7+6CF3HaaSsI5bYMLG5rKQXL0/WAhniANH0nPN8nZZ3aL0RsWlTaiPlyKJxjr0DMYUg8 WOjQ== X-Gm-Message-State: AOAM531oIXvsYrfjo3U9hKCHdWvpqhehm62dkwycJimKy+XC7rRkwb7/ DwVn7H2dcNQeNVDvTEHd/W4yIMY15FKDUg== X-Google-Smtp-Source: ABdhPJyPyTXXVGyF7AjoogIOHUe4ip97V++EYNT8eZ82aV+hX2X3v4MxiQLKA4EIZRdMu5I0s2ATrg== X-Received: by 2002:a63:388:0:b0:37c:8577:c8f3 with SMTP id 130-20020a630388000000b0037c8577c8f3mr2369102pgd.148.1647493573102; Wed, 16 Mar 2022 22:06:13 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH for-7.1 v6 34/51] target/nios2: Enable unaligned traps for system mode Date: Wed, 16 Mar 2022 22:05:21 -0700 Message-Id: <20220317050538.924111-35-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317050538.924111-1-richard.henderson@linaro.org> References: <20220317050538.924111-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::42d (failed) 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::42d; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42d.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 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, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marex@denx.de, amir.gonnen@neuroblade.ai Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1647495292671100001 Content-Type: text/plain; charset="utf-8" Unaligned traps are optional, but required with an mmu. Turn them on always, because the fallback behaviour is not documented (though presumably it discards low bits). Enable alignment checks in the config file. Unwind the guest pc properly from do_unaligned_access. Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/nios2/helper.c | 4 ++-- configs/targets/nios2-softmmu.mak | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/target/nios2/helper.c b/target/nios2/helper.c index 460032adc0..bf40cff779 100644 --- a/target/nios2/helper.c +++ b/target/nios2/helper.c @@ -264,8 +264,8 @@ void nios2_cpu_do_unaligned_access(CPUState *cs, vaddr = addr, CPUNios2State *env =3D &cpu->env; =20 env->ctrl[CR_BADADDR] =3D addr; - env->ctrl[CR_EXCEPTION] =3D FIELD_DP32(0, CR_EXCEPTION, CAUSE, EXCP_UN= ALIGN); - helper_raise_exception(env, EXCP_UNALIGN); + cs->exception_index =3D EXCP_UNALIGN; + cpu_loop_exit_restore(cs, retaddr); } =20 bool nios2_cpu_tlb_fill(CPUState *cs, vaddr address, int size, diff --git a/configs/targets/nios2-softmmu.mak b/configs/targets/nios2-soft= mmu.mak index 9a372f0717..1e93b54cd1 100644 --- a/configs/targets/nios2-softmmu.mak +++ b/configs/targets/nios2-softmmu.mak @@ -1 +1,2 @@ TARGET_ARCH=3Dnios2 +TARGET_ALIGNED_ONLY=3Dy --=20 2.25.1