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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4393f202721sm82660455e9.21.2025.02.11.08.26.08 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Feb 2025 08:26:08 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 11/68] target/arm: Use FPST_FPCR_AH for FRECPE, FRECPS, FRECPX, FRSQRTE, FRSQRTS Date: Tue, 11 Feb 2025 16:24:57 +0000 Message-Id: <20250211162554.4135349-12-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250211162554.4135349-1-peter.maydell@linaro.org> References: <20250211162554.4135349-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org For the instructions FRECPE, FRECPS, FRECPX, FRSQRTE, FRSQRTS, use FPST_FPCR_AH or FPST_FPCR_AH_F16 when FPCR.AH is 1, so that they get the required behaviour changes. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/tcg/translate-a64.h | 13 ++++ target/arm/tcg/translate-a64.c | 119 +++++++++++++++++++++++++-------- target/arm/tcg/translate-sve.c | 30 ++++++--- 3 files changed, 127 insertions(+), 35 deletions(-) diff --git a/target/arm/tcg/translate-a64.h b/target/arm/tcg/translate-a64.h index 0fcf7cb63ad..7d3b59ccd96 100644 --- a/target/arm/tcg/translate-a64.h +++ b/target/arm/tcg/translate-a64.h @@ -185,6 +185,19 @@ static inline TCGv_ptr pred_full_reg_ptr(DisasContext *s, int regno) return ret; } +/* + * Return the ARMFPStatusFlavour to use based on element size and + * whether FPCR.AH is set. + */ +static inline ARMFPStatusFlavour select_ah_fpst(DisasContext *s, MemOp esz) +{ + if (s->fpcr_ah) { + return esz == MO_16 ? FPST_AH_F16 : FPST_AH; + } else { + return esz == MO_16 ? FPST_A64_F16 : FPST_A64; + } +} + bool disas_sve(DisasContext *, uint32_t); bool disas_sme(DisasContext *, uint32_t); diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index be3f4489e5e..1556980c761 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -712,10 +712,10 @@ static void gen_gvec_op3_ool(DisasContext *s, bool is_q, int rd, * an out-of-line helper. */ static void gen_gvec_op3_fpst(DisasContext *s, bool is_q, int rd, int rn, - int rm, bool is_fp16, int data, + int rm, ARMFPStatusFlavour fpsttype, int data, gen_helper_gvec_3_ptr *fn) { - TCGv_ptr fpst = fpstatus_ptr(is_fp16 ? FPST_A64_F16 : FPST_A64); + TCGv_ptr fpst = fpstatus_ptr(fpsttype); tcg_gen_gvec_3_ptr(vec_full_reg_offset(s, rd), vec_full_reg_offset(s, rn), vec_full_reg_offset(s, rm), fpst, @@ -5025,14 +5025,16 @@ typedef struct FPScalar { void (*gen_d)(TCGv_i64, TCGv_i64, TCGv_i64, TCGv_ptr); } FPScalar; -static bool do_fp3_scalar(DisasContext *s, arg_rrr_e *a, const FPScalar *f) +static bool do_fp3_scalar_with_fpsttype(DisasContext *s, arg_rrr_e *a, + const FPScalar *f, + ARMFPStatusFlavour fpsttype) { switch (a->esz) { case MO_64: if (fp_access_check(s)) { TCGv_i64 t0 = read_fp_dreg(s, a->rn); TCGv_i64 t1 = read_fp_dreg(s, a->rm); - f->gen_d(t0, t0, t1, fpstatus_ptr(FPST_A64)); + f->gen_d(t0, t0, t1, fpstatus_ptr(fpsttype)); write_fp_dreg(s, a->rd, t0); } break; @@ -5040,7 +5042,7 @@ static bool do_fp3_scalar(DisasContext *s, arg_rrr_e *a, const FPScalar *f) if (fp_access_check(s)) { TCGv_i32 t0 = read_fp_sreg(s, a->rn); TCGv_i32 t1 = read_fp_sreg(s, a->rm); - f->gen_s(t0, t0, t1, fpstatus_ptr(FPST_A64)); + f->gen_s(t0, t0, t1, fpstatus_ptr(fpsttype)); write_fp_sreg(s, a->rd, t0); } break; @@ -5051,7 +5053,7 @@ static bool do_fp3_scalar(DisasContext *s, arg_rrr_e *a, const FPScalar *f) if (fp_access_check(s)) { TCGv_i32 t0 = read_fp_hreg(s, a->rn); TCGv_i32 t1 = read_fp_hreg(s, a->rm); - f->gen_h(t0, t0, t1, fpstatus_ptr(FPST_A64_F16)); + f->gen_h(t0, t0, t1, fpstatus_ptr(fpsttype)); write_fp_sreg(s, a->rd, t0); } break; @@ -5061,6 +5063,18 @@ static bool do_fp3_scalar(DisasContext *s, arg_rrr_e *a, const FPScalar *f) return true; } +static bool do_fp3_scalar(DisasContext *s, arg_rrr_e *a, const FPScalar *f) +{ + return do_fp3_scalar_with_fpsttype(s, a, f, + a->esz == MO_16 ? + FPST_A64_F16 : FPST_A64); +} + +static bool do_fp3_scalar_ah(DisasContext *s, arg_rrr_e *a, const FPScalar *f) +{ + return do_fp3_scalar_with_fpsttype(s, a, f, select_ah_fpst(s, a->esz)); +} + static const FPScalar f_scalar_fadd = { gen_helper_vfp_addh, gen_helper_vfp_adds, @@ -5214,14 +5228,14 @@ static const FPScalar f_scalar_frecps = { gen_helper_recpsf_f32, gen_helper_recpsf_f64, }; -TRANS(FRECPS_s, do_fp3_scalar, a, &f_scalar_frecps) +TRANS(FRECPS_s, do_fp3_scalar_ah, a, &f_scalar_frecps) static const FPScalar f_scalar_frsqrts = { gen_helper_rsqrtsf_f16, gen_helper_rsqrtsf_f32, gen_helper_rsqrtsf_f64, }; -TRANS(FRSQRTS_s, do_fp3_scalar, a, &f_scalar_frsqrts) +TRANS(FRSQRTS_s, do_fp3_scalar_ah, a, &f_scalar_frsqrts) static bool do_fcmp0_s(DisasContext *s, arg_rr_e *a, const FPScalar *f, bool swap) @@ -5472,8 +5486,10 @@ TRANS(CMHS_s, do_cmop_d, a, TCG_COND_GEU) TRANS(CMEQ_s, do_cmop_d, a, TCG_COND_EQ) TRANS(CMTST_s, do_cmop_d, a, TCG_COND_TSTNE) -static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a, int data, - gen_helper_gvec_3_ptr * const fns[3]) +static bool do_fp3_vector_with_fpsttype(DisasContext *s, arg_qrrr_e *a, + int data, + gen_helper_gvec_3_ptr * const fns[3], + ARMFPStatusFlavour fpsttype) { MemOp esz = a->esz; int check = fp_access_check_vector_hsd(s, a->q, esz); @@ -5482,11 +5498,26 @@ static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a, int data, return check == 0; } - gen_gvec_op3_fpst(s, a->q, a->rd, a->rn, a->rm, - esz == MO_16, data, fns[esz - 1]); + gen_gvec_op3_fpst(s, a->q, a->rd, a->rn, a->rm, fpsttype, + data, fns[esz - 1]); return true; } +static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a, int data, + gen_helper_gvec_3_ptr * const fns[3]) +{ + return do_fp3_vector_with_fpsttype(s, a, data, fns, + a->esz == MO_16 ? + FPST_A64_F16 : FPST_A64); +} + +static bool do_fp3_vector_ah(DisasContext *s, arg_qrrr_e *a, int data, + gen_helper_gvec_3_ptr * const f[3]) +{ + return do_fp3_vector_with_fpsttype(s, a, data, f, + select_ah_fpst(s, a->esz)); +} + static gen_helper_gvec_3_ptr * const f_vector_fadd[3] = { gen_helper_gvec_fadd_h, gen_helper_gvec_fadd_s, @@ -5611,14 +5642,14 @@ static gen_helper_gvec_3_ptr * const f_vector_frecps[3] = { gen_helper_gvec_recps_s, gen_helper_gvec_recps_d, }; -TRANS(FRECPS_v, do_fp3_vector, a, 0, f_vector_frecps) +TRANS(FRECPS_v, do_fp3_vector_ah, a, 0, f_vector_frecps) static gen_helper_gvec_3_ptr * const f_vector_frsqrts[3] = { gen_helper_gvec_rsqrts_h, gen_helper_gvec_rsqrts_s, gen_helper_gvec_rsqrts_d, }; -TRANS(FRSQRTS_v, do_fp3_vector, a, 0, f_vector_frsqrts) +TRANS(FRSQRTS_v, do_fp3_vector_ah, a, 0, f_vector_frsqrts) static gen_helper_gvec_3_ptr * const f_vector_faddp[3] = { gen_helper_gvec_faddp_h, @@ -6374,7 +6405,8 @@ static bool do_fp3_vector_idx(DisasContext *s, arg_qrrx_e *a, } gen_gvec_op3_fpst(s, a->q, a->rd, a->rn, a->rm, - esz == MO_16, a->idx, fns[esz - 1]); + esz == MO_16 ? FPST_A64_F16 : FPST_A64, + a->idx, fns[esz - 1]); return true; } @@ -8383,8 +8415,9 @@ typedef struct FPScalar1 { void (*gen_d)(TCGv_i64, TCGv_i64, TCGv_ptr); } FPScalar1; -static bool do_fp1_scalar(DisasContext *s, arg_rr_e *a, - const FPScalar1 *f, int rmode) +static bool do_fp1_scalar_with_fpsttype(DisasContext *s, arg_rr_e *a, + const FPScalar1 *f, int rmode, + ARMFPStatusFlavour fpsttype) { TCGv_i32 tcg_rmode = NULL; TCGv_ptr fpst; @@ -8396,7 +8429,7 @@ static bool do_fp1_scalar(DisasContext *s, arg_rr_e *a, return check == 0; } - fpst = fpstatus_ptr(a->esz == MO_16 ? FPST_A64_F16 : FPST_A64); + fpst = fpstatus_ptr(fpsttype); if (rmode >= 0) { tcg_rmode = gen_set_rmode(rmode, fpst); } @@ -8427,6 +8460,20 @@ static bool do_fp1_scalar(DisasContext *s, arg_rr_e *a, return true; } +static bool do_fp1_scalar(DisasContext *s, arg_rr_e *a, + const FPScalar1 *f, int rmode) +{ + return do_fp1_scalar_with_fpsttype(s, a, f, rmode, + a->esz == MO_16 ? + FPST_A64_F16 : FPST_A64); +} + +static bool do_fp1_scalar_ah(DisasContext *s, arg_rr_e *a, + const FPScalar1 *f, int rmode) +{ + return do_fp1_scalar_with_fpsttype(s, a, f, rmode, select_ah_fpst(s, a->esz)); +} + static const FPScalar1 f_scalar_fsqrt = { gen_helper_vfp_sqrth, gen_helper_vfp_sqrts, @@ -8481,21 +8528,21 @@ static const FPScalar1 f_scalar_frecpe = { gen_helper_recpe_f32, gen_helper_recpe_f64, }; -TRANS(FRECPE_s, do_fp1_scalar, a, &f_scalar_frecpe, -1) +TRANS(FRECPE_s, do_fp1_scalar_ah, a, &f_scalar_frecpe, -1) static const FPScalar1 f_scalar_frecpx = { gen_helper_frecpx_f16, gen_helper_frecpx_f32, gen_helper_frecpx_f64, }; -TRANS(FRECPX_s, do_fp1_scalar, a, &f_scalar_frecpx, -1) +TRANS(FRECPX_s, do_fp1_scalar_ah, a, &f_scalar_frecpx, -1) static const FPScalar1 f_scalar_frsqrte = { gen_helper_rsqrte_f16, gen_helper_rsqrte_f32, gen_helper_rsqrte_f64, }; -TRANS(FRSQRTE_s, do_fp1_scalar, a, &f_scalar_frsqrte, -1) +TRANS(FRSQRTE_s, do_fp1_scalar_ah, a, &f_scalar_frsqrte, -1) static bool trans_FCVT_s_ds(DisasContext *s, arg_rr *a) { @@ -9350,9 +9397,10 @@ TRANS_FEAT(FRINT64Z_v, aa64_frint, do_fp1_vector, a, &f_scalar_frint64, FPROUNDING_ZERO) TRANS_FEAT(FRINT64X_v, aa64_frint, do_fp1_vector, a, &f_scalar_frint64, -1) -static bool do_gvec_op2_fpst(DisasContext *s, MemOp esz, bool is_q, - int rd, int rn, int data, - gen_helper_gvec_2_ptr * const fns[3]) +static bool do_gvec_op2_fpst_with_fpsttype(DisasContext *s, MemOp esz, + bool is_q, int rd, int rn, int data, + gen_helper_gvec_2_ptr * const fns[3], + ARMFPStatusFlavour fpsttype) { int check = fp_access_check_vector_hsd(s, is_q, esz); TCGv_ptr fpst; @@ -9361,7 +9409,7 @@ static bool do_gvec_op2_fpst(DisasContext *s, MemOp esz, bool is_q, return check == 0; } - fpst = fpstatus_ptr(esz == MO_16 ? FPST_A64_F16 : FPST_A64); + fpst = fpstatus_ptr(fpsttype); tcg_gen_gvec_2_ptr(vec_full_reg_offset(s, rd), vec_full_reg_offset(s, rn), fpst, is_q ? 16 : 8, vec_full_reg_size(s), @@ -9369,6 +9417,23 @@ static bool do_gvec_op2_fpst(DisasContext *s, MemOp esz, bool is_q, return true; } +static bool do_gvec_op2_fpst(DisasContext *s, MemOp esz, bool is_q, + int rd, int rn, int data, + gen_helper_gvec_2_ptr * const fns[3]) +{ + return do_gvec_op2_fpst_with_fpsttype(s, esz, is_q, rd, rn, data, fns, + esz == MO_16 ? FPST_A64_F16 : + FPST_A64); +} + +static bool do_gvec_op2_ah_fpst(DisasContext *s, MemOp esz, bool is_q, + int rd, int rn, int data, + gen_helper_gvec_2_ptr * const fns[3]) +{ + return do_gvec_op2_fpst_with_fpsttype(s, esz, is_q, rd, rn, data, + fns, select_ah_fpst(s, esz)); +} + static gen_helper_gvec_2_ptr * const f_scvtf_v[] = { gen_helper_gvec_vcvt_sh, gen_helper_gvec_vcvt_sf, @@ -9478,14 +9543,14 @@ static gen_helper_gvec_2_ptr * const f_frecpe[] = { gen_helper_gvec_frecpe_s, gen_helper_gvec_frecpe_d, }; -TRANS(FRECPE_v, do_gvec_op2_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frecpe) +TRANS(FRECPE_v, do_gvec_op2_ah_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frecpe) static gen_helper_gvec_2_ptr * const f_frsqrte[] = { gen_helper_gvec_frsqrte_h, gen_helper_gvec_frsqrte_s, gen_helper_gvec_frsqrte_d, }; -TRANS(FRSQRTE_v, do_gvec_op2_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frsqrte) +TRANS(FRSQRTE_v, do_gvec_op2_ah_fpst, a->esz, a->q, a->rd, a->rn, 0, f_frsqrte) static bool trans_FCVTL_v(DisasContext *s, arg_qrr_e *a) { diff --git a/target/arm/tcg/translate-sve.c b/target/arm/tcg/translate-sve.c index e1788330aa7..c084bb58e7e 100644 --- a/target/arm/tcg/translate-sve.c +++ b/target/arm/tcg/translate-sve.c @@ -137,11 +137,11 @@ static bool gen_gvec_fpst_zz(DisasContext *s, gen_helper_gvec_2_ptr *fn, return true; } -static bool gen_gvec_fpst_arg_zz(DisasContext *s, gen_helper_gvec_2_ptr *fn, - arg_rr_esz *a, int data) +static bool gen_gvec_fpst_ah_arg_zz(DisasContext *s, gen_helper_gvec_2_ptr *fn, + arg_rr_esz *a, int data) { return gen_gvec_fpst_zz(s, fn, a->rd, a->rn, data, - a->esz == MO_16 ? FPST_A64_F16 : FPST_A64); + select_ah_fpst(s, a->esz)); } /* Invoke an out-of-line helper on 3 Zregs. */ @@ -194,6 +194,13 @@ static bool gen_gvec_fpst_arg_zzz(DisasContext *s, gen_helper_gvec_3_ptr *fn, a->esz == MO_16 ? FPST_A64_F16 : FPST_A64); } +static bool gen_gvec_fpst_ah_arg_zzz(DisasContext *s, gen_helper_gvec_3_ptr *fn, + arg_rrr_esz *a, int data) +{ + return gen_gvec_fpst_zzz(s, fn, a->rd, a->rn, a->rm, data, + select_ah_fpst(s, a->esz)); +} + /* Invoke an out-of-line helper on 4 Zregs. */ static bool gen_gvec_ool_zzzz(DisasContext *s, gen_helper_gvec_4 *fn, int rd, int rn, int rm, int ra, int data) @@ -3597,13 +3604,13 @@ static gen_helper_gvec_2_ptr * const frecpe_fns[] = { NULL, gen_helper_gvec_frecpe_h, gen_helper_gvec_frecpe_s, gen_helper_gvec_frecpe_d, }; -TRANS_FEAT(FRECPE, aa64_sve, gen_gvec_fpst_arg_zz, frecpe_fns[a->esz], a, 0) +TRANS_FEAT(FRECPE, aa64_sve, gen_gvec_fpst_ah_arg_zz, frecpe_fns[a->esz], a, 0) static gen_helper_gvec_2_ptr * const frsqrte_fns[] = { NULL, gen_helper_gvec_frsqrte_h, gen_helper_gvec_frsqrte_s, gen_helper_gvec_frsqrte_d, }; -TRANS_FEAT(FRSQRTE, aa64_sve, gen_gvec_fpst_arg_zz, frsqrte_fns[a->esz], a, 0) +TRANS_FEAT(FRSQRTE, aa64_sve, gen_gvec_fpst_ah_arg_zz, frsqrte_fns[a->esz], a, 0) /* *** SVE Floating Point Compare with Zero Group @@ -3707,11 +3714,18 @@ static bool trans_FADDA(DisasContext *s, arg_rprr_esz *a) }; \ TRANS_FEAT(NAME, aa64_sve, gen_gvec_fpst_arg_zzz, name##_fns[a->esz], a, 0) +#define DO_FP3_AH(NAME, name) \ + static gen_helper_gvec_3_ptr * const name##_fns[4] = { \ + NULL, gen_helper_gvec_##name##_h, \ + gen_helper_gvec_##name##_s, gen_helper_gvec_##name##_d \ + }; \ + TRANS_FEAT(NAME, aa64_sve, gen_gvec_fpst_ah_arg_zzz, name##_fns[a->esz], a, 0) + DO_FP3(FADD_zzz, fadd) DO_FP3(FSUB_zzz, fsub) DO_FP3(FMUL_zzz, fmul) -DO_FP3(FRECPS, recps) -DO_FP3(FRSQRTS, rsqrts) +DO_FP3_AH(FRECPS, recps) +DO_FP3_AH(FRSQRTS, rsqrts) #undef DO_FP3 @@ -3993,7 +4007,7 @@ static gen_helper_gvec_3_ptr * const frecpx_fns[] = { gen_helper_sve_frecpx_s, gen_helper_sve_frecpx_d, }; TRANS_FEAT(FRECPX, aa64_sve, gen_gvec_fpst_arg_zpz, frecpx_fns[a->esz], - a, 0, a->esz == MO_16 ? FPST_A64_F16 : FPST_A64) + a, 0, select_ah_fpst(s, a->esz)) static gen_helper_gvec_3_ptr * const fsqrt_fns[] = { NULL, gen_helper_sve_fsqrt_h,