From patchwork Mon Mar 12 20:27:19 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 884853 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=vivier.eu Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 400V4t0g54z9sSh for ; Tue, 13 Mar 2018 07:31:26 +1100 (AEDT) Received: from localhost ([::1]:34503 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evU6N-0007dv-RK for incoming@patchwork.ozlabs.org; Mon, 12 Mar 2018 16:31:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44839) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evU3I-0005Oa-AQ for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1evU3G-0005e1-8B for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:12 -0400 Received: from mout.kundenserver.de ([212.227.126.187]:49919) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1evU3F-0005Y1-Rd for qemu-devel@nongnu.org; Mon, 12 Mar 2018 16:28:10 -0400 Received: from localhost.localdomain ([78.238.229.36]) by mrelayeu.kundenserver.de (mreue005 [212.227.15.167]) with ESMTPSA (Nemesis) id 0M5cGS-1ekIrE10SO-00xe75; Mon, 12 Mar 2018 21:27:48 +0100 From: Laurent Vivier To: qemu-devel@nongnu.org Date: Mon, 12 Mar 2018 21:27:19 +0100 Message-Id: <20180312202728.23790-3-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:K0:04zm45usTcsKhMuk97MS7qaHEf+Z4KxcrRlt+6DR7RiVZOWwaKV J+KoKgdphdA9iBKRICvqrW+kn7scKMG9bKxLXw0mnjjMM/KvgUR2E5flFzBw2E7QHMRG0Tk XIqaSPbMN4y/5y8LRbKiymPg/o62ERFKFsH8mfQ86502aJgs0ijXstEAkw2q3t6oJgCi0Os Otp+naqX1g9KYI4viKQPw== X-UI-Out-Filterresults: notjunk:1; V01:K0:PXl3NI9SZzc=:R7tngmo86xgH8OgvZ/4P41 fSuigKPeyJTxX68KFdxUtzpBH8GZ7X+kTYXp69SB45+eiciXUYC714D/GN6Dmh6Qo1L5xaOeq JfVRdXhdhIkK7M33UPun2eqfnEL+JFUhvI+El83tRba8sD1UUhGyWQF7um2mshA4Hr7brNBB6 +6z41dhdz2hkJySMO84KmgVL4bouqeVH1LUfTVNSPukSyfrvlgeLODIw00SWcaE6WUPs1gJRn 9BttisBLJ0FGHEO73V6p6rlL3TZHnWLC0TiKlXo2oC5JCyKjPRLslsMl4NwhJypjf8f78/HUW FKhF3w4w5d6ilkEDwkLEdu1wNLXuzVSg34wLG8Bor2p7pgr6PyxF3h37nFkmBXxCt37Y0KfqL WC8a8IeE1LxbaA7LBnH1Ijlv26DyvUqqXX1eLHinPxUJeOE0+FWeWhho89VByvqwAyfV5Bf7t j4nLWziKl9/z1GHCMjv+pjdtORb49Wre6v5IWLtxyGpjt+ziKhBxnjvJ3DOasqLouuJCP5AXI H73KBqC/uWNxlMNfHjCVrjGOaGdb+g0KSnaM43uVxmNwFvrsTx8S7yTcSLIts6ArlETNT7H6S uuYlRJ3t/IChLuAveTfERdBcA7LQQDxvko7DWlpy9TvsSb84He9d4oLN39N3dOIquhEcM34wC u1vLJN0gWub4BmWsWjfbo2C8FAI3pgiSVz+Xvd0EXzYHzKn49NGBr3Z5UmpontPW1pZl76Znv H6lUPAOCxJG6huIwkprIUToCTJ6GdR0RexzogA== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.126.187 Subject: [Qemu-devel] [PATCH 02/11] target/m68k: implement fsin 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Using a local m68k floatx80_sin() [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 | 247 +++++++++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 + 5 files changed, 257 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index c41115ea05..a6cfb4db1a 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -597,3 +597,8 @@ void HELPER(ftan)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_tan(val->d, &env->fp_status); } + +void HELPER(fsin)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_sin(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index af9480fe49..6d8bfaab64 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -76,6 +76,7 @@ DEF_HELPER_3(fetox, void, env, fp, fp) 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(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 488dbc522b..6fb9665336 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -1476,3 +1476,250 @@ floatx80 floatx80_tan(floatx80 a, float_status *status) } } } + +/*---------------------------------------------------------------------------- + | Sine + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_sin(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 = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 0); + } + + adjn = 0; + + user_rnd_mode = status->float_rounding_mode; + user_rnd_prec = status->floatx80_rounding_precision; + status->float_rounding_mode = float_round_nearest_even; + status->floatx80_rounding_precision = 80; + + compact = floatx80_make_compact(aExp, aSig); + + fp0 = a; + + if (compact < 0x3FD78000 || compact > 0x4004BC7E) { + /* 2^(-40) > |X| > 15 PI */ + if (compact > 0x3FFF8000) { /* |X| >= 15 PI */ + /* REDUCEX */ + fp1 = packFloatx80(0, 0, 0); + if (compact == 0x7FFEFFFF) { + twopi1 = packFloatx80(aSign ^ 1, 0x7FFE, + LIT64(0xC90FDAA200000000)); + twopi2 = packFloatx80(aSign ^ 1, 0x7FDC, + LIT64(0x85A308D300000000)); + fp0 = floatx80_add(fp0, twopi1, status); + fp1 = fp0; + fp0 = floatx80_add(fp0, twopi2, status); + fp1 = floatx80_sub(fp1, fp0, status); + fp1 = floatx80_add(fp1, twopi2, status); + } + loop: + xSign = extractFloatx80Sign(fp0); + xExp = extractFloatx80Exp(fp0); + xExp -= 0x3FFF; + if (xExp <= 28) { + l = 0; + endflag = 1; + } else { + l = xExp - 27; + endflag = 0; + } + invtwopi = packFloatx80(0, 0x3FFE - l, + LIT64(0xA2F9836E4E44152A)); /* INVTWOPI */ + twopi1 = packFloatx80(0, 0x3FFF + l, LIT64(0xC90FDAA200000000)); + twopi2 = packFloatx80(0, 0x3FDD + l, LIT64(0x85A308D300000000)); + + /* SIGN(INARG)*2^63 IN SGL */ + twoto63 = packFloat32(xSign, 0xBE, 0); + + fp2 = floatx80_mul(fp0, invtwopi, status); + fp2 = floatx80_add(fp2, float32_to_floatx80(twoto63, status), + status); /* THE FRACT PART OF FP2 IS ROUNDED */ + fp2 = floatx80_sub(fp2, float32_to_floatx80(twoto63, status), + status); /* FP2 is N */ + fp4 = floatx80_mul(twopi1, fp2, status); /* W = N*P1 */ + fp5 = floatx80_mul(twopi2, fp2, status); /* w = N*P2 */ + fp3 = floatx80_add(fp4, fp5, status); /* FP3 is P */ + fp4 = floatx80_sub(fp4, fp3, status); /* W-P */ + fp0 = floatx80_sub(fp0, fp3, status); /* FP0 is A := R - P */ + fp4 = floatx80_add(fp4, fp5, status); /* FP4 is p = (W-P)+w */ + fp3 = fp0; /* FP3 is A */ + fp1 = floatx80_sub(fp1, fp4, status); /* FP1 is a := r - p */ + fp0 = floatx80_add(fp0, fp1, status); /* FP0 is R := A+a */ + + if (endflag > 0) { + n = floatx80_to_int32(fp2, status); + goto sincont; + } + fp3 = floatx80_sub(fp3, fp0, status); /* A-R */ + fp1 = floatx80_add(fp1, fp3, status); /* FP1 is r := (A-R)+a */ + goto loop; + } else { + /* SINSM */ + fp0 = float32_to_floatx80(make_float32(0x3F800000), + status); /* 1 */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + if (adjn) { + /* COSTINY */ + a = floatx80_sub(fp0, float32_to_floatx80( + make_float32(0x00800000), status), status); + } else { + /* SINTINY */ + a = floatx80_move(a, status); + } + float_raise(float_flag_inexact, status); + + return a; + } + } else { + fp1 = floatx80_mul(fp0, float64_to_floatx80( + make_float64(0x3FE45F306DC9C883), status), + status); /* X*2/PI */ + + n = floatx80_to_int32(fp1, status); + j = 32 + n; + + fp0 = floatx80_sub(fp0, pi_tbl[j], status); /* X-Y1 */ + fp0 = floatx80_sub(fp0, float32_to_floatx80(pi_tbl2[j], status), + status); /* FP0 IS R = (X-Y1)-Y2 */ + + sincont: + if ((n + adjn) & 1) { + /* COSPOLY */ + fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */ + fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */ + fp2 = float64_to_floatx80(make_float64(0x3D2AC4D0D6011EE3), + status); /* B8 */ + fp3 = float64_to_floatx80(make_float64(0xBDA9396F9F45AC19), + status); /* B7 */ + + xSign = extractFloatx80Sign(fp0); /* X IS S */ + xExp = extractFloatx80Exp(fp0); + xSig = extractFloatx80Frac(fp0); + + if (((n + adjn) >> 1) & 1) { + xSign ^= 1; + posneg1 = make_float32(0xBF800000); /* -1 */ + } else { + xSign ^= 0; + posneg1 = make_float32(0x3F800000); /* 1 */ + } /* X IS NOW R'= SGN*R */ + + fp2 = floatx80_mul(fp2, fp1, status); /* TB8 */ + fp3 = floatx80_mul(fp3, fp1, status); /* TB7 */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3E21EED90612C972), status), + status); /* B6+TB8 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBE927E4FB79D9FCF), status), + status); /* B5+TB7 */ + fp2 = floatx80_mul(fp2, fp1, status); /* T(B6+TB8) */ + fp3 = floatx80_mul(fp3, fp1, status); /* T(B5+TB7) */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3EFA01A01A01D423), status), + status); /* B4+T(B6+TB8) */ + fp4 = packFloatx80(1, 0x3FF5, LIT64(0xB60B60B60B61D438)); + fp3 = floatx80_add(fp3, fp4, status); /* B3+T(B5+TB7) */ + fp2 = floatx80_mul(fp2, fp1, status); /* T(B4+T(B6+TB8)) */ + fp1 = floatx80_mul(fp1, fp3, status); /* T(B3+T(B5+TB7)) */ + fp4 = packFloatx80(0, 0x3FFA, LIT64(0xAAAAAAAAAAAAAB5E)); + fp2 = floatx80_add(fp2, fp4, status); /* B2+T(B4+T(B6+TB8)) */ + fp1 = floatx80_add(fp1, float32_to_floatx80( + make_float32(0xBF000000), status), + status); /* B1+T(B3+T(B5+TB7)) */ + fp0 = floatx80_mul(fp0, fp2, status); /* S(B2+T(B4+T(B6+TB8))) */ + fp0 = floatx80_add(fp0, fp1, status); /* [B1+T(B3+T(B5+TB7))]+ + * [S(B2+T(B4+T(B6+TB8)))] + */ + + x = packFloatx80(xSign, xExp, xSig); + fp0 = floatx80_mul(fp0, x, status); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, float32_to_floatx80(posneg1, status), status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + /* SINPOLY */ + xSign = extractFloatx80Sign(fp0); /* X IS R */ + xExp = extractFloatx80Exp(fp0); + xSig = extractFloatx80Frac(fp0); + + xSign ^= ((n + adjn) >> 1) & 1; /* X IS NOW R'= SGN*R */ + + fp0 = floatx80_mul(fp0, fp0, status); /* FP0 IS S */ + fp1 = floatx80_mul(fp0, fp0, status); /* FP1 IS T */ + fp3 = float64_to_floatx80(make_float64(0xBD6AAA77CCC994F5), + status); /* A7 */ + fp2 = float64_to_floatx80(make_float64(0x3DE612097AAE8DA1), + status); /* A6 */ + fp3 = floatx80_mul(fp3, fp1, status); /* T*A7 */ + fp2 = floatx80_mul(fp2, fp1, status); /* T*A6 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBE5AE6452A118AE4), status), + status); /* A5+T*A7 */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3EC71DE3A5341531), status), + status); /* A4+T*A6 */ + fp3 = floatx80_mul(fp3, fp1, status); /* T(A5+TA7) */ + fp2 = floatx80_mul(fp2, fp1, status); /* T(A4+TA6) */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBF2A01A01A018B59), status), + status); /* A3+T(A5+TA7) */ + fp4 = packFloatx80(0, 0x3FF8, LIT64(0x88888888888859AF)); + fp2 = floatx80_add(fp2, fp4, status); /* A2+T(A4+TA6) */ + fp1 = floatx80_mul(fp1, fp3, status); /* T(A3+T(A5+TA7)) */ + fp2 = floatx80_mul(fp2, fp0, status); /* S(A2+T(A4+TA6)) */ + fp4 = packFloatx80(1, 0x3FFC, LIT64(0xAAAAAAAAAAAAAA99)); + fp1 = floatx80_add(fp1, fp4, status); /* A1+T(A3+T(A5+TA7)) */ + fp1 = floatx80_add(fp1, fp2, + status); /* [A1+T(A3+T(A5+TA7))]+ + * [S(A2+T(A4+TA6))] + */ + + x = packFloatx80(xSign, xExp, xSig); + fp0 = floatx80_mul(fp0, x, status); /* R'*S */ + fp0 = floatx80_mul(fp0, fp1, status); /* SIN(R')-R' */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = 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 c5ac54d87b..e8ccf69ba8 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -35,4 +35,5 @@ floatx80 floatx80_etox(floatx80 a, float_status *status); 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); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index af8cdc2580..05ab75e43f 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5057,6 +5057,9 @@ DISAS_INSN(fpu) case 0x06: /* flognp1 */ gen_helper_flognp1(cpu_env, cpu_dest, cpu_src); break; + case 0x0e: /* fsin */ + gen_helper_fsin(cpu_env, cpu_dest, cpu_src); + break; case 0x0f: /* ftan */ gen_helper_ftan(cpu_env, cpu_dest, cpu_src); break;