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X-Received-From: 2607:f8b0:4003:c06::230 Subject: [Qemu-devel] [PATCH 84/99] target/arm: Implement FMOV (immediate) for fp16 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: Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= , qemu-stable@nongnu.org, Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 From: Alex Benn=C3=A9e All the hard work is already done by vfp_expand_imm, we just need to make sure we pick up the correct size. Cc: qemu-stable@nongnu.org Reviewed-by: Peter Maydell Signed-off-by: Alex Benn=C3=A9e Tested-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson Message-id: 20180512003217.9105-11-richard.henderson@linaro.org [rth: Merge unallocated_encoding check with TCGMemOp conversion.] Signed-off-by: Richard Henderson Signed-off-by: Peter Maydell (cherry picked from commit 6ba28ddb9be37bdb67e3e38007a53ccbdcd010df) Signed-off-by: Michael Roth --- target/arm/translate-a64.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 7075f27e05..f4587c3814 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -5431,11 +5431,25 @@ static void disas_fp_imm(DisasContext *s, uint32_t = insn) { int rd =3D extract32(insn, 0, 5); int imm8 =3D extract32(insn, 13, 8); - int is_double =3D extract32(insn, 22, 2); + int type =3D extract32(insn, 22, 2); uint64_t imm; TCGv_i64 tcg_res; + TCGMemOp sz; =20 - if (is_double > 1) { + switch (type) { + case 0: + sz =3D MO_32; + break; + case 1: + sz =3D MO_64; + break; + case 3: + sz =3D MO_16; + if (arm_dc_feature(s, ARM_FEATURE_V8_FP16)) { + break; + } + /* fallthru */ + default: unallocated_encoding(s); return; } @@ -5444,7 +5458,7 @@ static void disas_fp_imm(DisasContext *s, uint32_t in= sn) return; } =20 - imm =3D vfp_expand_imm(MO_32 + is_double, imm8); + imm =3D vfp_expand_imm(sz, imm8); =20 tcg_res =3D tcg_const_i64(imm); write_fp_dreg(s, rd, tcg_res); --=20 2.17.1