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[69.222.133.165]) by smtp.gmail.com with ESMTPSA id 206sm16077696ywk.44.2019.07.31.10.57.42 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 31 Jul 2019 10:57:42 -0700 (PDT) From: Jan Bobek To: qemu-devel@nongnu.org Date: Wed, 31 Jul 2019 13:56:45 -0400 Message-Id: <20190731175702.4916-6-jan.bobek@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190731175702.4916-1-jan.bobek@gmail.com> References: <20190731175702.4916-1-jan.bobek@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::b43 Subject: [Qemu-devel] [RFC PATCH v1 05/22] target/i386: introduce gen_ld_modrm_* helpers 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: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson , Jan Bobek Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" These help with decoding/loading ModR/M vector operands; the operand's register offset is returned, which is suitable for use with gvec infrastructure. Signed-off-by: Jan Bobek --- target/i386/translate.c | 47 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/target/i386/translate.c b/target/i386/translate.c index 9e22eca2dc..7548677e1f 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -3040,6 +3040,53 @@ static const struct SSEOpHelper_eppi sse_op_table7[256] = { [0xdf] = AESNI_OP(aeskeygenassist), }; +static inline void gen_ld_modrm_PqQq(CPUX86State *env, DisasContext *s, int modrm, + uint32_t* dofs, uint32_t* aofs) +{ + const int mod = (modrm >> 6) & 3; + const int reg = (modrm >> 3) & 7; /* no REX_R */ + *dofs = offsetof(CPUX86State, fpregs[reg].mmx); + + if(mod == 3) { + const int rm = modrm & 7; /* no REX_B */ + + *aofs = offsetof(CPUX86State, fpregs[rm].mmx); + } else { + *aofs = offsetof(CPUX86State, mmx_t0); + + gen_lea_modrm(env, s, modrm); + gen_ldq_env_A0(s, *aofs); + } +} + +static inline void gen_ld_modrm_VxWx(CPUX86State *env, DisasContext *s, int modrm, + uint32_t* dofs, uint32_t* aofs) +{ + const int mod = (modrm >> 6) & 3; + const int reg = ((modrm >> 3) & 7) | REX_R(s); + *dofs = offsetof(CPUX86State, xmm_regs[reg]); + + if(mod == 3) { + const int rm = (modrm & 7) | REX_B(s); + + *aofs = offsetof(CPUX86State, xmm_regs[rm]); + } else { + *aofs = offsetof(CPUX86State, xmm_t0); + + gen_lea_modrm(env, s, modrm); + gen_ldo_env_A0(s, *aofs); /* FIXME this needs to load 32 bytes for YMM */ + } +} + +static inline void gen_ld_modrm_VxHxWx(CPUX86State *env, DisasContext *s, int modrm, + uint32_t* dofs, uint32_t* aofs, uint32_t* bofs) +{ + assert(s->prefix & PREFIX_VEX); + + gen_ld_modrm_VxWx(env, s, modrm, dofs, bofs); + *aofs = offsetof(CPUX86State, xmm_regs[s->vex_v]); +} + static void gen_sse(CPUX86State *env, DisasContext *s, int b) { int b1, op1_offset, op2_offset, is_xmm, val; -- 2.20.1