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Mon, 12 Mar 2018 16:28:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1evU3I-0005pN-M9 for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:15 -0400 Received: from mout.kundenserver.de ([212.227.126.134]:58591) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1evU3I-0005jD-9g for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:12 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue005 [212.227.15.167]) with ESMTPSA (Nemesis) id 0MaG7g-1fFDp7245I-00Jvdn; Mon, 12 Mar 2018 21:27:50 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Date: Mon, 12 Mar 2018 21:27:20 +0100 Message-Id: <20180312202728.23790-4-laurent@vivier.eu> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180312202728.23790-1-laurent@vivier.eu> References: <20180312202728.23790-1-laurent@vivier.eu> X-Provags-ID: V03:K0:XTtkFI3hpDFCLutmSjJ2F40qPN3g8Iv3NGZFHQT2vokvryseW6s ojIhF1TOp95AGtmAurZrFlAo3CbWhn90LlKQEomSjV5LUEXWD+yVhJd8guCisBuia+oWBxN 4EzwGsJFW+kfYLKO4DgS85r5TKIMbmQTRq+9M4ZkH43iChPIDrKrUp4tn+DHtNFGB4yewro sGWWtHPKmaZKvzn0V2S4A== X-UI-Out-Filterresults: notjunk:1;V01:K0:ZvGs1RRtsUo=:k8bPKB0VXeQMFgEUE3W1gB KTUxTq0umxjQugFl9ETWoJjXuy/vsV0MiZKJOjIiFfXQLBF8phVEhdWpgOp1UdBiXdB7MNK0D uhXjqI1bRaE0za5prwo/h7fLdGL9TjRGyaXJu2Y2V4wKDnuUSpqOtPnO2gp6wPpHXbHHKfBgB MXW9Jp4f0WkUxctT88AZvaBMqLz5bj08/pkHqiSnLDSALRuY2jao5iEiXCijx8CaArOIgYxPG 38SFYQP3fmxN6IXE1W3KTqUS8cKb/ae6Wu3Mk+J311lpMQA0x066+BcgMpiXpGAX3JHVeJ0Mi sAjp7agxUqKxXdgEXayHfZgE1ZWJV1ipOPSwJEK8pPZB0BIbSCG4tQHIaga2oIbQ+pImSeBte KyNDe0srwEWrr6sM1MvepUOJGQrt26LThmZDrrbVejGcMc7eLkYd2DN61O8KgJXRdJ5FcegqT VGpn6A2R+rRJHI14pmt1AGtzlDGktK7YdGdxRqEHpeB3/G5AhB3CltXIpR7GIADc/ch3DOvTZ isB42ss/MvSA+QLdouaXeRZIR1dPsGxrcAktZgRm919lQ41xX7i/5aedKxlzejzPLy5i9Li5t JC68zvwCIGqeNmNcLpmEAv1wH4alyJP2qYl7hGvXZ5ZxziVE5aPokqat1cLY5/2EyelpsXJ2V 0fvwLsrYM5FHaCoccKgiYgDs7Kb/ZgniGmL/jpvlTjyN49p8RB5jXC6YUA79QiqdCrpfxo7p7 i2JIQhaWMvNZvkTSU4lty6ryjhYpog3cjUa7IA== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.126.134 Subject: [Qemu-devel] [PATCH 03/11] target/m68k: implement fcos X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Laurent Vivier , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Using a local m68k floatx80_cos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier --- target/m68k/fpu_helper.c | 5 + target/m68k/helper.h | 1 + target/m68k/softfloat.c | 244 +++++++++++++++++++++++++++++++++++++++++++= ++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 + 5 files changed, 254 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index a6cfb4db1a..71df19c685 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -602,3 +602,8 @@ void HELPER(fsin)(CPUM68KState *env, FPReg *res, FPReg = *val) { res->d =3D floatx80_sin(val->d, &env->fp_status); } + +void HELPER(fcos)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d =3D floatx80_cos(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 6d8bfaab64..767baf75a3 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -77,6 +77,7 @@ DEF_HELPER_3(ftwotox, void, env, fp, fp) DEF_HELPER_3(ftentox, void, env, fp, fp) DEF_HELPER_3(ftan, void, env, fp, fp) DEF_HELPER_3(fsin, void, env, fp, fp) +DEF_HELPER_3(fcos, void, env, fp, fp) =20 DEF_HELPER_3(mac_move, void, env, i32, i32) DEF_HELPER_3(macmulf, i64, env, i32, i32) diff --git a/target/m68k/softfloat.c b/target/m68k/softfloat.c index 6fb9665336..a3a12a0bcb 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -1723,3 +1723,247 @@ floatx80 floatx80_sin(floatx80 a, float_status *sta= tus) } } } + +/*------------------------------------------------------------------------= ---- + | Cosine + *------------------------------------------------------------------------= ----*/ + +floatx80 floatx80_cos(floatx80 a, float_status *status) +{ + flag aSign, xSign; + int32_t aExp, xExp; + uint64_t aSig, xSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact, l, n, j; + floatx80 fp0, fp1, fp2, fp3, fp4, fp5, x, invtwopi, twopi1, twopi2; + float32 posneg1, twoto63; + flag adjn, endflag; + + aSig =3D extractFloatx80Frac(a); + aExp =3D extractFloatx80Exp(a); + aSign =3D extractFloatx80Sign(a); + + if (aExp =3D=3D 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + + if (aExp =3D=3D 0 && aSig =3D=3D 0) { + return packFloatx80(0, one_exp, one_sig); + } + + adjn =3D 1; + + user_rnd_mode =3D status->float_rounding_mode; + user_rnd_prec =3D status->floatx80_rounding_precision; + status->float_rounding_mode =3D float_round_nearest_even; + status->floatx80_rounding_precision =3D 80; + + compact =3D floatx80_make_compact(aExp, aSig); + + fp0 =3D a; + + if (compact < 0x3FD78000 || compact > 0x4004BC7E) { + /* 2^(-40) > |X| > 15 PI */ + if (compact > 0x3FFF8000) { /* |X| >=3D 15 PI */ + /* REDUCEX */ + fp1 =3D packFloatx80(0, 0, 0); + if (compact =3D=3D 0x7FFEFFFF) { + twopi1 =3D packFloatx80(aSign ^ 1, 0x7FFE, + LIT64(0xC90FDAA200000000)); + twopi2 =3D packFloatx80(aSign ^ 1, 0x7FDC, + LIT64(0x85A308D300000000)); + fp0 =3D floatx80_add(fp0, twopi1, status); + fp1 =3D fp0; + fp0 =3D floatx80_add(fp0, twopi2, status); + fp1 =3D floatx80_sub(fp1, fp0, status); + fp1 =3D floatx80_add(fp1, twopi2, status); + } + loop: + xSign =3D extractFloatx80Sign(fp0); + xExp =3D extractFloatx80Exp(fp0); + xExp -=3D 0x3FFF; + if (xExp <=3D 28) { + l =3D 0; + endflag =3D 1; + } else { + l =3D xExp - 27; + endflag =3D 0; + } + invtwopi =3D packFloatx80(0, 0x3FFE - l, + LIT64(0xA2F9836E4E44152A)); /* INVTWOP= I */ + twopi1 =3D packFloatx80(0, 0x3FFF + l, LIT64(0xC90FDAA20000000= 0)); + twopi2 =3D packFloatx80(0, 0x3FDD + l, LIT64(0x85A308D30000000= 0)); + + /* SIGN(INARG)*2^63 IN SGL */ + twoto63 =3D packFloat32(xSign, 0xBE, 0); + + fp2 =3D floatx80_mul(fp0, invtwopi, status); + fp2 =3D floatx80_add(fp2, float32_to_floatx80(twoto63, status), + status); /* THE FRACT PART OF FP2 IS ROUNDE= D */ + fp2 =3D floatx80_sub(fp2, float32_to_floatx80(twoto63, status), + status); /* FP2 is N */ + fp4 =3D floatx80_mul(twopi1, fp2, status); /* W =3D N*P1 */ + fp5 =3D floatx80_mul(twopi2, fp2, status); /* w =3D N*P2 */ + fp3 =3D floatx80_add(fp4, fp5, status); /* FP3 is P */ + fp4 =3D floatx80_sub(fp4, fp3, status); /* W-P */ + fp0 =3D floatx80_sub(fp0, fp3, status); /* FP0 is A :=3D R - P= */ + fp4 =3D floatx80_add(fp4, fp5, status); /* FP4 is p =3D (W-P)+= w */ + fp3 =3D fp0; /* FP3 is A */ + fp1 =3D floatx80_sub(fp1, fp4, status); /* FP1 is a :=3D r - p= */ + fp0 =3D floatx80_add(fp0, fp1, status); /* FP0 is R :=3D A+a */ + + if (endflag > 0) { + n =3D floatx80_to_int32(fp2, status); + goto sincont; + } + fp3 =3D floatx80_sub(fp3, fp0, status); /* A-R */ + fp1 =3D floatx80_add(fp1, fp3, status); /* FP1 is r :=3D (A-R)= +a */ + goto loop; + } else { + /* SINSM */ + fp0 =3D float32_to_floatx80(make_float32(0x3F800000), status);= /* 1 */ + + status->float_rounding_mode =3D user_rnd_mode; + status->floatx80_rounding_precision =3D user_rnd_prec; + + if (adjn) { + /* COSTINY */ + a =3D floatx80_sub(fp0, float32_to_floatx80( + make_float32(0x00800000), status), + status); + } else { + /* SINTINY */ + a =3D floatx80_move(a, status); + } + float_raise(float_flag_inexact, status); + + return a; + } + } else { + fp1 =3D floatx80_mul(fp0, float64_to_floatx80( + make_float64(0x3FE45F306DC9C883), status), + status); /* X*2/PI */ + + n =3D floatx80_to_int32(fp1, status); + j =3D 32 + n; + + fp0 =3D floatx80_sub(fp0, pi_tbl[j], status); /* X-Y1 */ + fp0 =3D floatx80_sub(fp0, float32_to_floatx80(pi_tbl2[j], status), + status); /* FP0 IS R =3D (X-Y1)-Y2 */ + + sincont: + if ((n + adjn) & 1) { + /* COSPOLY */ + fp0 =3D floatx80_mul(fp0, fp0, status); /* FP0 IS S */ + fp1 =3D floatx80_mul(fp0, fp0, status); /* FP1 IS T */ + fp2 =3D float64_to_floatx80(make_float64(0x3D2AC4D0D6011EE3), + status); /* B8 */ + fp3 =3D float64_to_floatx80(make_float64(0xBDA9396F9F45AC19), + status); /* B7 */ + + xSign =3D extractFloatx80Sign(fp0); /* X IS S */ + xExp =3D extractFloatx80Exp(fp0); + xSig =3D extractFloatx80Frac(fp0); + + if (((n + adjn) >> 1) & 1) { + xSign ^=3D 1; + posneg1 =3D make_float32(0xBF800000); /* -1 */ + } else { + xSign ^=3D 0; + posneg1 =3D make_float32(0x3F800000); /* 1 */ + } /* X IS NOW R'=3D SGN*R */ + + fp2 =3D floatx80_mul(fp2, fp1, status); /* TB8 */ + fp3 =3D floatx80_mul(fp3, fp1, status); /* TB7 */ + fp2 =3D floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3E21EED90612C972), status), + status); /* B6+TB8 */ + fp3 =3D floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBE927E4FB79D9FCF), status), + status); /* B5+TB7 */ + fp2 =3D floatx80_mul(fp2, fp1, status); /* T(B6+TB8) */ + fp3 =3D floatx80_mul(fp3, fp1, status); /* T(B5+TB7) */ + fp2 =3D floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3EFA01A01A01D423), status), + status); /* B4+T(B6+TB8) */ + fp4 =3D packFloatx80(1, 0x3FF5, LIT64(0xB60B60B60B61D438)); + fp3 =3D floatx80_add(fp3, fp4, status); /* B3+T(B5+TB7) */ + fp2 =3D floatx80_mul(fp2, fp1, status); /* T(B4+T(B6+TB8)) */ + fp1 =3D floatx80_mul(fp1, fp3, status); /* T(B3+T(B5+TB7)) */ + fp4 =3D packFloatx80(0, 0x3FFA, LIT64(0xAAAAAAAAAAAAAB5E)); + fp2 =3D floatx80_add(fp2, fp4, status); /* B2+T(B4+T(B6+TB8)) = */ + fp1 =3D floatx80_add(fp1, float32_to_floatx80( + make_float32(0xBF000000), status), + status); /* B1+T(B3+T(B5+TB7)) */ + fp0 =3D floatx80_mul(fp0, fp2, status); /* S(B2+T(B4+T(B6+TB8)= )) */ + fp0 =3D floatx80_add(fp0, fp1, status); + /* [B1+T(B3+T(B5+TB7))]+[S(B2+T(B4+T(B6+TB8)= ))] */ + + x =3D packFloatx80(xSign, xExp, xSig); + fp0 =3D floatx80_mul(fp0, x, status); + + status->float_rounding_mode =3D user_rnd_mode; + status->floatx80_rounding_precision =3D user_rnd_prec; + + a =3D floatx80_add(fp0, float32_to_floatx80(posneg1, status), = status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + /* SINPOLY */ + xSign =3D extractFloatx80Sign(fp0); /* X IS R */ + xExp =3D extractFloatx80Exp(fp0); + xSig =3D extractFloatx80Frac(fp0); + + xSign ^=3D ((n + adjn) >> 1) & 1; /* X IS NOW R'=3D SGN*R */ + + fp0 =3D floatx80_mul(fp0, fp0, status); /* FP0 IS S */ + fp1 =3D floatx80_mul(fp0, fp0, status); /* FP1 IS T */ + fp3 =3D float64_to_floatx80(make_float64(0xBD6AAA77CCC994F5), + status); /* A7 */ + fp2 =3D float64_to_floatx80(make_float64(0x3DE612097AAE8DA1), + status); /* A6 */ + fp3 =3D floatx80_mul(fp3, fp1, status); /* T*A7 */ + fp2 =3D floatx80_mul(fp2, fp1, status); /* T*A6 */ + fp3 =3D floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBE5AE6452A118AE4), status), + status); /* A5+T*A7 */ + fp2 =3D floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3EC71DE3A5341531), status), + status); /* A4+T*A6 */ + fp3 =3D floatx80_mul(fp3, fp1, status); /* T(A5+TA7) */ + fp2 =3D floatx80_mul(fp2, fp1, status); /* T(A4+TA6) */ + fp3 =3D floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBF2A01A01A018B59), status), + status); /* A3+T(A5+TA7) */ + fp4 =3D packFloatx80(0, 0x3FF8, LIT64(0x88888888888859AF)); + fp2 =3D floatx80_add(fp2, fp4, status); /* A2+T(A4+TA6) */ + fp1 =3D floatx80_mul(fp1, fp3, status); /* T(A3+T(A5+TA7)) */ + fp2 =3D floatx80_mul(fp2, fp0, status); /* S(A2+T(A4+TA6)) */ + fp4 =3D packFloatx80(1, 0x3FFC, LIT64(0xAAAAAAAAAAAAAA99)); + fp1 =3D floatx80_add(fp1, fp4, status); /* A1+T(A3+T(A5+TA7)) = */ + fp1 =3D floatx80_add(fp1, fp2, status); + /* [A1+T(A3+T(A5+TA7))]+[S(A2+T(A4+TA6= ))] */ + + x =3D packFloatx80(xSign, xExp, xSig); + fp0 =3D floatx80_mul(fp0, x, status); /* R'*S */ + fp0 =3D floatx80_mul(fp0, fp1, status); /* SIN(R')-R' */ + + status->float_rounding_mode =3D user_rnd_mode; + status->floatx80_rounding_precision =3D user_rnd_prec; + + a =3D floatx80_add(fp0, x, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index e8ccf69ba8..4fd5b2c609 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -36,4 +36,5 @@ floatx80 floatx80_twotox(floatx80 a, float_status *status= ); floatx80 floatx80_tentox(floatx80 a, float_status *status); floatx80 floatx80_tan(floatx80 a, float_status *status); floatx80 floatx80_sin(floatx80 a, float_status *status); +floatx80 floatx80_cos(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 05ab75e43f..f47388da4b 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5099,6 +5099,9 @@ DISAS_INSN(fpu) case 0x5e: /* fdneg */ gen_helper_fdneg(cpu_env, cpu_dest, cpu_src); break; + case 0x1d: /* fcos */ + gen_helper_fcos(cpu_env, cpu_dest, cpu_src); + break; case 0x1e: /* fgetexp */ gen_helper_fgetexp(cpu_env, cpu_dest, cpu_src); break; --=20 2.14.3