From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55448) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fB99S-00041C-7N for qemu-devel@nongnu.org; Tue, 24 Apr 2018 21:23:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fB99R-0007PT-8s for qemu-devel@nongnu.org; Tue, 24 Apr 2018 21:23:18 -0400 Received: from mail-pf0-x242.google.com ([2607:f8b0:400e:c00::242]:34310) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fB99R-0007Ob-2B for qemu-devel@nongnu.org; Tue, 24 Apr 2018 21:23:17 -0400 Received: by mail-pf0-x242.google.com with SMTP id a14so3243592pfi.1 for ; Tue, 24 Apr 2018 18:23:16 -0700 (PDT) From: Richard Henderson Date: Tue, 24 Apr 2018 15:22:56 -1000 Message-Id: <20180425012300.14698-6-richard.henderson@linaro.org> In-Reply-To: <20180425012300.14698-1-richard.henderson@linaro.org> References: <20180425012300.14698-1-richard.henderson@linaro.org> Subject: [Qemu-devel] [PATCH 5/9] target/arm: Implement FMOV (general) for fp16 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, alex.bennee@linaro.org 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(-) 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)) { -- 2.14.3