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Tue, 10 Dec 2024 08:19:18 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH v2 24/69] target/arm: Convert FMOV, FABS, FNEG (scalar) to decodetree Date: Tue, 10 Dec 2024 10:16:48 -0600 Message-ID: <20241210161733.1830573-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241210161733.1830573-1-richard.henderson@linaro.org> References: <20241210161733.1830573-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::132; envelope-from=richard.henderson@linaro.org; helo=mail-lf1-x132.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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1733848006748116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell --- target/arm/tcg/translate-a64.c | 105 +++++++++++++++++++++++---------- target/arm/tcg/a64.decode | 7 +++ 2 files changed, 81 insertions(+), 31 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index f67360c4c5..383ee7f3f0 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -8283,6 +8283,67 @@ static bool trans_CSEL(DisasContext *s, arg_CSEL *a) return true; } =20 +typedef struct FPScalar1Int { + void (*gen_h)(TCGv_i32, TCGv_i32); + void (*gen_s)(TCGv_i32, TCGv_i32); + void (*gen_d)(TCGv_i64, TCGv_i64); +} FPScalar1Int; + +static bool do_fp1_scalar_int(DisasContext *s, arg_rr_e *a, + const FPScalar1Int *f) +{ + switch (a->esz) { + case MO_64: + if (fp_access_check(s)) { + TCGv_i64 t =3D read_fp_dreg(s, a->rn); + f->gen_d(t, t); + write_fp_dreg(s, a->rd, t); + } + break; + case MO_32: + if (fp_access_check(s)) { + TCGv_i32 t =3D read_fp_sreg(s, a->rn); + f->gen_s(t, t); + write_fp_sreg(s, a->rd, t); + } + break; + case MO_16: + if (!dc_isar_feature(aa64_fp16, s)) { + return false; + } + if (fp_access_check(s)) { + TCGv_i32 t =3D read_fp_hreg(s, a->rn); + f->gen_h(t, t); + write_fp_sreg(s, a->rd, t); + } + break; + default: + return false; + } + return true; +} + +static const FPScalar1Int f_scalar_fmov =3D { + tcg_gen_mov_i32, + tcg_gen_mov_i32, + tcg_gen_mov_i64, +}; +TRANS(FMOV_s, do_fp1_scalar_int, a, &f_scalar_fmov) + +static const FPScalar1Int f_scalar_fabs =3D { + gen_vfp_absh, + gen_vfp_abss, + gen_vfp_absd, +}; +TRANS(FABS_s, do_fp1_scalar_int, a, &f_scalar_fabs) + +static const FPScalar1Int f_scalar_fneg =3D { + gen_vfp_negh, + gen_vfp_negs, + gen_vfp_negd, +}; +TRANS(FNEG_s, do_fp1_scalar_int, a, &f_scalar_fneg) + /* Floating-point data-processing (1 source) - half precision */ static void handle_fp_1src_half(DisasContext *s, int opcode, int rd, int r= n) { @@ -8291,15 +8352,6 @@ static void handle_fp_1src_half(DisasContext *s, int= opcode, int rd, int rn) TCGv_i32 tcg_res =3D tcg_temp_new_i32(); =20 switch (opcode) { - case 0x0: /* FMOV */ - tcg_gen_mov_i32(tcg_res, tcg_op); - break; - case 0x1: /* FABS */ - gen_vfp_absh(tcg_res, tcg_op); - break; - case 0x2: /* FNEG */ - gen_vfp_negh(tcg_res, tcg_op); - break; case 0x3: /* FSQRT */ fpst =3D fpstatus_ptr(FPST_FPCR_F16); gen_helper_sqrt_f16(tcg_res, tcg_op, fpst); @@ -8327,6 +8379,9 @@ static void handle_fp_1src_half(DisasContext *s, int = opcode, int rd, int rn) gen_helper_advsimd_rinth(tcg_res, tcg_op, fpst); break; default: + case 0x0: /* FMOV */ + case 0x1: /* FABS */ + case 0x2: /* FNEG */ g_assert_not_reached(); } =20 @@ -8345,15 +8400,6 @@ static void handle_fp_1src_single(DisasContext *s, i= nt opcode, int rd, int rn) tcg_res =3D tcg_temp_new_i32(); =20 switch (opcode) { - case 0x0: /* FMOV */ - tcg_gen_mov_i32(tcg_res, tcg_op); - goto done; - case 0x1: /* FABS */ - gen_vfp_abss(tcg_res, tcg_op); - goto done; - case 0x2: /* FNEG */ - gen_vfp_negs(tcg_res, tcg_op); - goto done; case 0x3: /* FSQRT */ gen_helper_vfp_sqrts(tcg_res, tcg_op, tcg_env); goto done; @@ -8389,6 +8435,9 @@ static void handle_fp_1src_single(DisasContext *s, in= t opcode, int rd, int rn) gen_fpst =3D gen_helper_frint64_s; break; default: + case 0x0: /* FMOV */ + case 0x1: /* FABS */ + case 0x2: /* FNEG */ g_assert_not_reached(); } =20 @@ -8413,22 +8462,10 @@ static void handle_fp_1src_double(DisasContext *s, = int opcode, int rd, int rn) TCGv_ptr fpst; int rmode =3D -1; =20 - switch (opcode) { - case 0x0: /* FMOV */ - gen_gvec_fn2(s, false, rd, rn, tcg_gen_gvec_mov, 0); - return; - } - tcg_op =3D read_fp_dreg(s, rn); tcg_res =3D tcg_temp_new_i64(); =20 switch (opcode) { - case 0x1: /* FABS */ - gen_vfp_absd(tcg_res, tcg_op); - goto done; - case 0x2: /* FNEG */ - gen_vfp_negd(tcg_res, tcg_op); - goto done; case 0x3: /* FSQRT */ gen_helper_vfp_sqrtd(tcg_res, tcg_op, tcg_env); goto done; @@ -8461,6 +8498,9 @@ static void handle_fp_1src_double(DisasContext *s, in= t opcode, int rd, int rn) gen_fpst =3D gen_helper_frint64_d; break; default: + case 0x0: /* FMOV */ + case 0x1: /* FABS */ + case 0x2: /* FNEG */ g_assert_not_reached(); } =20 @@ -8581,7 +8621,7 @@ static void disas_fp_1src(DisasContext *s, uint32_t i= nsn) goto do_unallocated; } /* fall through */ - case 0x0 ... 0x3: + case 0x3: case 0x8 ... 0xc: case 0xe ... 0xf: /* 32-to-32 and 64-to-64 ops */ @@ -8631,6 +8671,9 @@ static void disas_fp_1src(DisasContext *s, uint32_t i= nsn) =20 default: do_unallocated: + case 0x0: /* FMOV */ + case 0x1: /* FABS */ + case 0x2: /* FNEG */ unallocated_encoding(s); break; } diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 7868b1cb24..b9cc8963da 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -47,6 +47,7 @@ @rr_h ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D1 @rr_d ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D3 @rr_sd ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D%esz_sd +@rr_hsd ........ ... ..... ...... rn:5 rd:5 &rr_e esz=3D%esz_h= sd =20 @rrr_b ........ ... rm:5 ...... rn:5 rd:5 &rrr_e esz=3D0 @rrr_h ........ ... rm:5 ...... rn:5 rd:5 &rrr_e esz=3D1 @@ -1321,6 +1322,12 @@ FMAXV_s 0110 1110 00 11000 01111 10 ..... ..= ... @rr_q1e2 FMINV_h 0.00 1110 10 11000 01111 10 ..... ..... @qrr_h FMINV_s 0110 1110 10 11000 01111 10 ..... ..... @rr_q1e2 =20 +# Floating-point data processing (1 source) + +FMOV_s 00011110 .. 1 000000 10000 ..... ..... @rr_hsd +FABS_s 00011110 .. 1 000001 10000 ..... ..... @rr_hsd +FNEG_s 00011110 .. 1 000010 10000 ..... ..... @rr_hsd + # Floating-point Immediate =20 FMOVI_s 0001 1110 .. 1 imm:8 100 00000 rd:5 esz=3D%esz_hsd --=20 2.43.0