From 5c37a7c504f63919341d277486e941c64584d171 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 10 May 2018 18:10:58 +0100 Subject: [PATCH] target/arm: Clear SVE high bits for FMOV MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use write_fp_dreg and clear_vec_high to zero the bits that need zeroing for these cases. Cc: qemu-stable@nongnu.org Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson Message-id: 20180502221552.3873-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell (cherry picked from commit 9a9f1f59521f46e8ff4527d9a2b52f83577e2aa3) Signed-off-by: Bruce Rogers --- target/arm/translate-a64.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index c91329249d..a2c26a5f0a 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -5438,31 +5438,24 @@ static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof) if (itof) { TCGv_i64 tcg_rn = cpu_reg(s, rn); + TCGv_i64 tmp; switch (type) { case 0: - { /* 32 bit */ - TCGv_i64 tmp = tcg_temp_new_i64(); + tmp = tcg_temp_new_i64(); tcg_gen_ext32u_i64(tmp, tcg_rn); - tcg_gen_st_i64(tmp, cpu_env, fp_reg_offset(s, rd, MO_64)); - tcg_gen_movi_i64(tmp, 0); - tcg_gen_st_i64(tmp, cpu_env, fp_reg_hi_offset(s, rd)); + write_fp_dreg(s, rd, tmp); tcg_temp_free_i64(tmp); break; - } case 1: - { /* 64 bit */ - TCGv_i64 tmp = tcg_const_i64(0); - tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_offset(s, rd, MO_64)); - tcg_gen_st_i64(tmp, cpu_env, fp_reg_hi_offset(s, rd)); - tcg_temp_free_i64(tmp); + write_fp_dreg(s, rd, tcg_rn); break; - } case 2: /* 64 bit to top half. */ tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_hi_offset(s, rd)); + clear_vec_high(s, true, rd); break; } } else {