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[97.113.13.231]) by smtp.gmail.com with ESMTPSA id w6sm6984152pge.30.2019.05.16.19.39.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 May 2019 19:39:55 -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; bh=bpjcbv60JSWpD1TbbxFv9kSVFeLonJbRE1N/VVDdCYY=; b=HqnN2aDQgiFqND352ve6KVLTaO4Q9XVPo7FXMkHVE1WdPJ9RBrME/+ujRRC+5mD4Gl yQb0yvKmninXLieoV5nYWKMq7w3iCbjq5nZECfsfnuQxGnoirZothbRwXt2xkf8L1Pej 7FASrYglahBrOJ511wPIIdA/AzVxVr1VlpY7hoTw5Frwxi5hQmUfmZAGsZQSVjRGkRTK xSCey+7Qn4PwNlgmdcc/WpJIOzeLB5F0DEdWru25r1lp+9STa3paYjxuSTDgHoH9YbsB w2kSdkS5R5jkkiY/X+t6SHNoT7WTBZkLeedOejqwXsD1Iw2p7sros9qNCe5BEZ8vq0e8 7Zew== 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; bh=bpjcbv60JSWpD1TbbxFv9kSVFeLonJbRE1N/VVDdCYY=; b=DNIfeGP0g2E46ihkOIobI9WdkgMTFYV5qcjAXa7+A1I81s0afhJH4/daDI0oEBPMV7 HHMI31SbQXPCS3Gj3k6aJ1Ox73WyEnkaA2ovu7sr8zxS47gxmPwFLUf9d5lypkG6W4ep RBa1DqKuz76Lb4JZPSa0CVkZRHn2oqgUEWHo5o3bV51KDdy9uK/KW3zbaUEEwBYSgdS5 emcWZcqj17ZZHv71zal+chXPHTI/YLpcXEf35uXOH+qkeKVrDqE3oFrLccAtykVB7SIC ojc7FQVGRARQ/Nj/nxLv/78ls+FEH2ppNsL4ZufEjzha7DGH6AtEzhBoYG+lmzO+eqoF CLuA== X-Gm-Message-State: APjAAAXcTzyL1sczLwOdr/OhomVr2+IJmHvfTfgltDz3DvggfDpp0fvL NV44T6D7tXAntv3wTkPOECKkbQAvL00= X-Google-Smtp-Source: APXvYqzPhRr0N1Di7+jtQwzCaAbonStS3001NEvT4QgiOsEYQQb3C+FfEznyqXIhrofcc4m9rdEPBg== X-Received: by 2002:a65:5086:: with SMTP id r6mr54706673pgp.301.1558060796081; Thu, 16 May 2019 19:39:56 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Thu, 16 May 2019 19:39:23 -0700 Message-Id: <20190517023924.1686-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190517023924.1686-1-richard.henderson@linaro.org> References: <20190517023924.1686-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::444 Subject: [Qemu-devel] [PATCH v8 24/25] target/ppc: Use qemu_guest_getrandom for DARN X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, berrange@redhat.com, armbru@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We now have an interface for guest visible random numbers. Acked-by: David Gibson Reviewed-by: Laurent Vivier Signed-off-by: Richard Henderson --- target/ppc/int_helper.c | 39 +++++++++++++++++++++++++++------------ 1 file changed, 27 insertions(+), 12 deletions(-) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index f6a088ac08..9af779ad38 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -23,6 +23,8 @@ #include "exec/helper-proto.h" #include "crypto/aes.h" #include "fpu/softfloat.h" +#include "qapi/error.h" +#include "qemu/guest-random.h" =20 #include "helper_regs.h" /*************************************************************************= ****/ @@ -158,25 +160,38 @@ uint32_t helper_cmpeqb(target_ulong ra, target_ulong = rb) #undef hasvalue =20 /* - * Return invalid random number. - * - * FIXME: Add rng backend or other mechanism to get cryptographically suit= able - * random number + * Return a random number. */ -target_ulong helper_darn32(void) +uint64_t helper_darn32(void) { - return -1; + Error *err =3D NULL; + uint32_t ret; + + if (qemu_guest_getrandom(&ret, sizeof(ret), &err) < 0) { + qemu_log_mask(LOG_UNIMP, "darn: Crypto failure: %s", + error_get_pretty(err)); + error_free(err); + return -1; + } + + return ret; } =20 -target_ulong helper_darn64(void) +uint64_t helper_darn64(void) { - return -1; + Error *err =3D NULL; + uint64_t ret; + + if (qemu_guest_getrandom(&ret, sizeof(ret), &err) < 0) { + qemu_log_mask(LOG_UNIMP, "darn: Crypto failure: %s", + error_get_pretty(err)); + error_free(err); + return -1; + } + + return ret; } =20 -#endif - -#if defined(TARGET_PPC64) - uint64_t helper_bpermd(uint64_t rs, uint64_t rb) { int i; --=20 2.17.1