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[69.222.133.165]) by smtp.gmail.com with ESMTPSA id f84sm33383540oig.43.2019.08.09.21.13.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 09 Aug 2019 21:13:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=tSn61jr3E0eccd5dUu+yzc0P1TL3PTMW/+yDPp+cvf8=; b=KqCKaaV7/38wjZlNBqNcubY1258iiuc0QHQ81A224k92q5fVIpZcT8EY1ZYy/Eldc9 rior9IE8vOegdK82p2R70rVglh8GHIHj5wF2hyTxJDZmcQzN+vF7G+mFBV/kAWfdp58I llvvCJx8xkCUvmsJscYv7+GvsdotyHoMo7TgeS5tou3OGqXqbGlwmfhv/TDklUxCl8YU PmWUgLmp0tCs6PIxryLR1YlB28cn0z7vor78nWkzKiCydXSgpiaIf8nu5taHoav0c9qZ opKrC+u1r6vA40GzHMmRMZYeFFkEeQ1BSgmqgrX1lJMl9RGbxLXauigjler+WZKq3sax eFPQ== 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=tSn61jr3E0eccd5dUu+yzc0P1TL3PTMW/+yDPp+cvf8=; b=MocrB/SZe/kdOZ1tYVgKgVonIzcctQUSP4Y116KFr9JUUI0BVUyrijUuRm01HEDeUV 61l4JEVE5x3HjTv1QKeuj9QkjG/XGg6AtfG1jnZnlm5nEbnFCqhUY3VrLjcjvks857fo qBk6qoFUsTh7cxF+QBy3JGre0yYR/b0IOExQ9EZev3g7jRCx9iGSitE0Rn4AgjfUkYMm IDRAiz2lhpUVmAJpWLkGdO+JsPjBvVCYJSDdruPsVrBOJp05Fv8t8MxGD7sIiaTQAzU6 48YYf1mQ2AVQfpr3pxSPSKG3bsOvr3QMSXyaINEFktYOEXtHvXKbmIlbS4YsoWwdec/g 4DUw== X-Gm-Message-State: APjAAAWIwI9ogU9ahUlC2IxTRJlJjP7RnNUBJKPtNDBc84peNLYjsZe7 6ys6hyQfpF4qVXN/rP2H13x+Z1aD X-Google-Smtp-Source: APXvYqyi8gxyLPBivNSp6TZja/vQ+rwToIcDNi57U//6BljhGjweO3vY7ise+UyYDucxNNZWSPt5Qw== X-Received: by 2002:a9d:67cf:: with SMTP id c15mr19033922otn.326.1565410404532; Fri, 09 Aug 2019 21:13:24 -0700 (PDT) From: Jan Bobek To: qemu-devel@nongnu.org Date: Sat, 10 Aug 2019 00:12:34 -0400 Message-Id: <20190810041255.6820-19-jan.bobek@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190810041255.6820-1-jan.bobek@gmail.com> References: <20190810041255.6820-1-jan.bobek@gmail.com> 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::341 Subject: [Qemu-devel] [RFC PATCH v2 18/39] target/i386: introduce modifier for direct-only operand decoding 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: Jan Bobek , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson 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" Many operands can only decode successfully if the ModR/M byte has the direct form (i.e. MOD=3D3). Capture this common aspect by introducing a special operand-initialization statement wrapper. Signed-off-by: Jan Bobek --- target/i386/translate.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/i386/translate.c b/target/i386/translate.c index 4a2dae6238..0bee7288e6 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -4601,6 +4601,15 @@ static int ck_cpuid(CPUX86State *env, DisasContext *= s, int ck_cpuid_feat) #define INSNOP_FINALIZE_NOOP /* no-op */ #define INSNOP_FINALIZE_INVALID g_assert_not_reached() =20 +#define INSNOP_INIT_DIRECT_ONLY(init_stmt) \ + do { \ + if (decode_modrm_mod(env, s, modrm) =3D=3D 3) { \ + init_stmt; \ + } else { \ + INSNOP_INIT_FAIL; \ + } \ + } while (0) + static void gen_sse_ng(CPUX86State *env, DisasContext *s, int b) { enum { --=20 2.20.1