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target/arm: Handle FPCR.NEP for 1-input scalar operations

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Handle FPCR.NEP for the 1-input scalar operations.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Peter Maydell 2025-02-01 16:39:22 +00:00
parent 053b39aad9
commit 3f88032ce2
1 changed files with 14 additions and 12 deletions
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26
target/arm/tcg/translate-a64.c
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@ -8509,17 +8509,17 @@ static bool do_fp1_scalar_with_fpsttype(DisasContext *s, arg_rr_e *a,
case MO_64: case MO_64:
t64 = read_fp_dreg(s, a->rn); t64 = read_fp_dreg(s, a->rn);
f->gen_d(t64, t64, fpst); f->gen_d(t64, t64, fpst);
write_fp_dreg(s, a->rd, t64); write_fp_dreg_merging(s, a->rd, a->rd, t64);
break; break;
case MO_32: case MO_32:
t32 = read_fp_sreg(s, a->rn); t32 = read_fp_sreg(s, a->rn);
f->gen_s(t32, t32, fpst); f->gen_s(t32, t32, fpst);
write_fp_sreg(s, a->rd, t32); write_fp_sreg_merging(s, a->rd, a->rd, t32);
break; break;
case MO_16: case MO_16:
t32 = read_fp_hreg(s, a->rn); t32 = read_fp_hreg(s, a->rn);
f->gen_h(t32, t32, fpst); f->gen_h(t32, t32, fpst);
write_fp_sreg(s, a->rd, t32); write_fp_hreg_merging(s, a->rd, a->rd, t32);
break; break;
default: default:
g_assert_not_reached(); g_assert_not_reached();
@ -8640,7 +8640,7 @@ static bool trans_FCVT_s_ds(DisasContext *s, arg_rr *a)
TCGv_ptr fpst = fpstatus_ptr(FPST_A64); TCGv_ptr fpst = fpstatus_ptr(FPST_A64);
gen_helper_vfp_fcvtds(tcg_rd, tcg_rn, fpst); gen_helper_vfp_fcvtds(tcg_rd, tcg_rn, fpst);
write_fp_dreg(s, a->rd, tcg_rd); write_fp_dreg_merging(s, a->rd, a->rd, tcg_rd);
} }
return true; return true;
} }
@ -8653,8 +8653,8 @@ static bool trans_FCVT_s_hs(DisasContext *s, arg_rr *a)
TCGv_ptr fpst = fpstatus_ptr(FPST_A64); TCGv_ptr fpst = fpstatus_ptr(FPST_A64);
gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp); gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp);
/* write_fp_sreg is OK here because top half of result is zero */ /* write_fp_hreg_merging is OK here because top half of result is zero */
write_fp_sreg(s, a->rd, tmp); write_fp_hreg_merging(s, a->rd, a->rd, tmp);
} }
return true; return true;
} }
@ -8667,7 +8667,7 @@ static bool trans_FCVT_s_sd(DisasContext *s, arg_rr *a)
TCGv_ptr fpst = fpstatus_ptr(FPST_A64); TCGv_ptr fpst = fpstatus_ptr(FPST_A64);
gen_helper_vfp_fcvtsd(tcg_rd, tcg_rn, fpst); gen_helper_vfp_fcvtsd(tcg_rd, tcg_rn, fpst);
write_fp_sreg(s, a->rd, tcg_rd); write_fp_sreg_merging(s, a->rd, a->rd, tcg_rd);
} }
return true; return true;
} }
@ -8681,8 +8681,8 @@ static bool trans_FCVT_s_hd(DisasContext *s, arg_rr *a)
TCGv_ptr fpst = fpstatus_ptr(FPST_A64); TCGv_ptr fpst = fpstatus_ptr(FPST_A64);
gen_helper_vfp_fcvt_f64_to_f16(tcg_rd, tcg_rn, fpst, ahp); gen_helper_vfp_fcvt_f64_to_f16(tcg_rd, tcg_rn, fpst, ahp);
/* write_fp_sreg is OK here because top half of tcg_rd is zero */ /* write_fp_hreg_merging is OK here because top half of tcg_rd is zero */
write_fp_sreg(s, a->rd, tcg_rd); write_fp_hreg_merging(s, a->rd, a->rd, tcg_rd);
} }
return true; return true;
} }
@ -8696,7 +8696,7 @@ static bool trans_FCVT_s_sh(DisasContext *s, arg_rr *a)
TCGv_i32 tcg_ahp = get_ahp_flag(); TCGv_i32 tcg_ahp = get_ahp_flag();
gen_helper_vfp_fcvt_f16_to_f32(tcg_rd, tcg_rn, tcg_fpst, tcg_ahp); gen_helper_vfp_fcvt_f16_to_f32(tcg_rd, tcg_rn, tcg_fpst, tcg_ahp);
write_fp_sreg(s, a->rd, tcg_rd); write_fp_sreg_merging(s, a->rd, a->rd, tcg_rd);
} }
return true; return true;
} }
@ -8710,7 +8710,7 @@ static bool trans_FCVT_s_dh(DisasContext *s, arg_rr *a)
TCGv_i32 tcg_ahp = get_ahp_flag(); TCGv_i32 tcg_ahp = get_ahp_flag();
gen_helper_vfp_fcvt_f16_to_f64(tcg_rd, tcg_rn, tcg_fpst, tcg_ahp); gen_helper_vfp_fcvt_f16_to_f64(tcg_rd, tcg_rn, tcg_fpst, tcg_ahp);
write_fp_dreg(s, a->rd, tcg_rd); write_fp_dreg_merging(s, a->rd, a->rd, tcg_rd);
} }
return true; return true;
} }
@ -8958,7 +8958,9 @@ static bool do_fcvt_f(DisasContext *s, arg_fcvt *a,
do_fcvt_scalar(s, a->esz | (is_signed ? MO_SIGN : 0), do_fcvt_scalar(s, a->esz | (is_signed ? MO_SIGN : 0),
a->esz, tcg_int, a->shift, a->rn, rmode); a->esz, tcg_int, a->shift, a->rn, rmode);
clear_vec(s, a->rd); if (!s->fpcr_nep) {
clear_vec(s, a->rd);
}
write_vec_element(s, tcg_int, a->rd, 0, a->esz); write_vec_element(s, tcg_int, a->rd, 0, a->esz);
return true; return true;
} }