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[76.173.164.138]) by smtp.gmail.com with ESMTPSA id z127sm27767966pfb.72.2018.04.24.18.23.14 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 24 Apr 2018 18:23:15 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Tue, 24 Apr 2018 15:22:56 -1000 Message-Id: <20180425012300.14698-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180425012300.14698-1-richard.henderson@linaro.org> References: <20180425012300.14698-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c00::242 Subject: [Qemu-devel] [PATCH 5/9] target/arm: Implement FMOV (general) 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: peter.maydell@linaro.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Adding the fp16 moves to/from general registers. Signed-off-by: Richard Henderson --- target/arm/translate-a64.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) -- 2.14.3 diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index f2241d8174..36bb5f6f08 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -5375,6 +5375,15 @@ static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof) tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_hi_offset(s, rd)); clear_vec_high(s, true, rd); break; + case 3: + /* 16 bit */ + tmp = tcg_temp_new_i64(); + tcg_gen_ext16u_i64(tmp, tcg_rn); + write_fp_dreg(s, rd, tmp); + tcg_temp_free_i64(tmp); + break; + default: + g_assert_not_reached(); } } else { TCGv_i64 tcg_rd = cpu_reg(s, rd); @@ -5392,6 +5401,12 @@ static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof) /* 64 bits from top half */ tcg_gen_ld_i64(tcg_rd, cpu_env, fp_reg_hi_offset(s, rn)); break; + case 3: + /* 16 bit */ + tcg_gen_ld16u_i64(tcg_rd, cpu_env, fp_reg_offset(s, rn, MO_16)); + break; + default: + g_assert_not_reached(); } } } @@ -5431,10 +5446,15 @@ static void disas_fp_int_conv(DisasContext *s, uint32_t insn) case 0xa: /* 64 bit */ case 0xd: /* 64 bit to top half of quad */ break; + case 0x6: /* 16-bit */ + if (arm_dc_feature(s, ARM_FEATURE_V8_FP16)) { + break; + } + /* fallthru */ default: /* all other sf/type/rmode combinations are invalid */ unallocated_encoding(s); - break; + return; } if (!fp_access_check(s)) {