From 273401809c8a8330e5430f2c958467efa7079b2c Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:18 +0100 Subject: [PATCH 01/11] target/m68k: implement ftan Using a local m68k floatx80_tan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-2-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 + target/m68k/helper.h | 1 + target/m68k/softfloat.c | 210 ++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/softfloat_fpsp_tables.h | 136 ++++++++++++++++++ target/m68k/translate.c | 3 + 6 files changed, 356 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 62cbb0dff1..c41115ea05 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -592,3 +592,8 @@ void HELPER(ftentox)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_tentox(val->d, &env->fp_status); } + +void HELPER(ftan)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_tan(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 9a9734c196..af9480fe49 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -75,6 +75,7 @@ DEF_HELPER_3(flog2, void, env, fp, fp) 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(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 4bd5b9e6b7..488dbc522b 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -1266,3 +1266,213 @@ floatx80 floatx80_tentox(floatx80 a, float_status *status) return a; } } + +/*---------------------------------------------------------------------------- + | Tangent + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_tan(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, invtwopi, twopi1, twopi2; + float32 twoto63; + flag 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); + } + + 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 tancont; + } + fp3 = floatx80_sub(fp3, fp0, status); /* A-R */ + fp1 = floatx80_add(fp1, fp3, status); /* FP1 is r := (A-R)+a */ + goto loop; + } else { + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + 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 */ + + tancont: + if (n & 1) { + /* NODD */ + fp1 = fp0; /* R */ + fp0 = floatx80_mul(fp0, fp0, status); /* S = R*R */ + fp3 = float64_to_floatx80(make_float64(0x3EA0B759F50F8688), + status); /* Q4 */ + fp2 = float64_to_floatx80(make_float64(0xBEF2BAA5A8924F04), + status); /* P3 */ + fp3 = floatx80_mul(fp3, fp0, status); /* SQ4 */ + fp2 = floatx80_mul(fp2, fp0, status); /* SP3 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBF346F59B39BA65F), status), + status); /* Q3+SQ4 */ + fp4 = packFloatx80(0, 0x3FF6, LIT64(0xE073D3FC199C4A00)); + fp2 = floatx80_add(fp2, fp4, status); /* P2+SP3 */ + fp3 = floatx80_mul(fp3, fp0, status); /* S(Q3+SQ4) */ + fp2 = floatx80_mul(fp2, fp0, status); /* S(P2+SP3) */ + fp4 = packFloatx80(0, 0x3FF9, LIT64(0xD23CD68415D95FA1)); + fp3 = floatx80_add(fp3, fp4, status); /* Q2+S(Q3+SQ4) */ + fp4 = packFloatx80(1, 0x3FFC, LIT64(0x8895A6C5FB423BCA)); + fp2 = floatx80_add(fp2, fp4, status); /* P1+S(P2+SP3) */ + fp3 = floatx80_mul(fp3, fp0, status); /* S(Q2+S(Q3+SQ4)) */ + fp2 = floatx80_mul(fp2, fp0, status); /* S(P1+S(P2+SP3)) */ + fp4 = packFloatx80(1, 0x3FFD, LIT64(0xEEF57E0DA84BC8CE)); + fp3 = floatx80_add(fp3, fp4, status); /* Q1+S(Q2+S(Q3+SQ4)) */ + fp2 = floatx80_mul(fp2, fp1, status); /* RS(P1+S(P2+SP3)) */ + fp0 = floatx80_mul(fp0, fp3, status); /* S(Q1+S(Q2+S(Q3+SQ4))) */ + fp1 = floatx80_add(fp1, fp2, status); /* R+RS(P1+S(P2+SP3)) */ + fp0 = floatx80_add(fp0, float32_to_floatx80( + make_float32(0x3F800000), status), + status); /* 1+S(Q1+S(Q2+S(Q3+SQ4))) */ + + xSign = extractFloatx80Sign(fp1); + xExp = extractFloatx80Exp(fp1); + xSig = extractFloatx80Frac(fp1); + xSign ^= 1; + fp1 = packFloatx80(xSign, xExp, xSig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_div(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + fp1 = floatx80_mul(fp0, fp0, status); /* S = R*R */ + fp3 = float64_to_floatx80(make_float64(0x3EA0B759F50F8688), + status); /* Q4 */ + fp2 = float64_to_floatx80(make_float64(0xBEF2BAA5A8924F04), + status); /* P3 */ + fp3 = floatx80_mul(fp3, fp1, status); /* SQ4 */ + fp2 = floatx80_mul(fp2, fp1, status); /* SP3 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBF346F59B39BA65F), status), + status); /* Q3+SQ4 */ + fp4 = packFloatx80(0, 0x3FF6, LIT64(0xE073D3FC199C4A00)); + fp2 = floatx80_add(fp2, fp4, status); /* P2+SP3 */ + fp3 = floatx80_mul(fp3, fp1, status); /* S(Q3+SQ4) */ + fp2 = floatx80_mul(fp2, fp1, status); /* S(P2+SP3) */ + fp4 = packFloatx80(0, 0x3FF9, LIT64(0xD23CD68415D95FA1)); + fp3 = floatx80_add(fp3, fp4, status); /* Q2+S(Q3+SQ4) */ + fp4 = packFloatx80(1, 0x3FFC, LIT64(0x8895A6C5FB423BCA)); + fp2 = floatx80_add(fp2, fp4, status); /* P1+S(P2+SP3) */ + fp3 = floatx80_mul(fp3, fp1, status); /* S(Q2+S(Q3+SQ4)) */ + fp2 = floatx80_mul(fp2, fp1, status); /* S(P1+S(P2+SP3)) */ + fp4 = packFloatx80(1, 0x3FFD, LIT64(0xEEF57E0DA84BC8CE)); + fp3 = floatx80_add(fp3, fp4, status); /* Q1+S(Q2+S(Q3+SQ4)) */ + fp2 = floatx80_mul(fp2, fp0, status); /* RS(P1+S(P2+SP3)) */ + fp1 = floatx80_mul(fp1, fp3, status); /* S(Q1+S(Q2+S(Q3+SQ4))) */ + fp0 = floatx80_add(fp0, fp2, status); /* R+RS(P1+S(P2+SP3)) */ + fp1 = floatx80_add(fp1, float32_to_floatx80( + make_float32(0x3F800000), status), + status); /* 1+S(Q1+S(Q2+S(Q3+SQ4))) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_div(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index d28e49fe9f..c5ac54d87b 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -34,4 +34,5 @@ floatx80 floatx80_log2(floatx80 a, float_status *status); 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); #endif diff --git a/target/m68k/softfloat_fpsp_tables.h b/target/m68k/softfloat_fpsp_tables.h index dd76dc0373..a9c86a5af2 100644 --- a/target/m68k/softfloat_fpsp_tables.h +++ b/target/m68k/softfloat_fpsp_tables.h @@ -371,4 +371,140 @@ static const uint32_t exp2_tbl2[64] = { 0xBFBDBF4A, 0x3FBEC01A, 0x3FBE8CAC, 0xBFBCBB3F, 0x3FBEF73A, 0xBFB8B795, 0x3FBEF84B, 0xBFBEF581 }; + +static const floatx80 pi_tbl[65] = { + make_floatx80_init(0xC004, 0xC90FDAA22168C235), + make_floatx80_init(0xC004, 0xC2C75BCD105D7C23), + make_floatx80_init(0xC004, 0xBC7EDCF7FF523611), + make_floatx80_init(0xC004, 0xB6365E22EE46F000), + make_floatx80_init(0xC004, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0xC004, 0xA9A56078CC3063DD), + make_floatx80_init(0xC004, 0xA35CE1A3BB251DCB), + make_floatx80_init(0xC004, 0x9D1462CEAA19D7B9), + make_floatx80_init(0xC004, 0x96CBE3F9990E91A8), + make_floatx80_init(0xC004, 0x9083652488034B96), + make_floatx80_init(0xC004, 0x8A3AE64F76F80584), + make_floatx80_init(0xC004, 0x83F2677A65ECBF73), + make_floatx80_init(0xC003, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0xC003, 0xEEC2D3A087AC669F), + make_floatx80_init(0xC003, 0xE231D5F66595DA7B), + make_floatx80_init(0xC003, 0xD5A0D84C437F4E58), + make_floatx80_init(0xC003, 0xC90FDAA22168C235), + make_floatx80_init(0xC003, 0xBC7EDCF7FF523611), + make_floatx80_init(0xC003, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0xC003, 0xA35CE1A3BB251DCB), + make_floatx80_init(0xC003, 0x96CBE3F9990E91A8), + make_floatx80_init(0xC003, 0x8A3AE64F76F80584), + make_floatx80_init(0xC002, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0xC002, 0xE231D5F66595DA7B), + make_floatx80_init(0xC002, 0xC90FDAA22168C235), + make_floatx80_init(0xC002, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0xC002, 0x96CBE3F9990E91A8), + make_floatx80_init(0xC001, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0xC001, 0xC90FDAA22168C235), + make_floatx80_init(0xC001, 0x96CBE3F9990E91A8), + make_floatx80_init(0xC000, 0xC90FDAA22168C235), + make_floatx80_init(0xBFFF, 0xC90FDAA22168C235), + make_floatx80_init(0x0000, 0x0000000000000000), + make_floatx80_init(0x3FFF, 0xC90FDAA22168C235), + make_floatx80_init(0x4000, 0xC90FDAA22168C235), + make_floatx80_init(0x4001, 0x96CBE3F9990E91A8), + make_floatx80_init(0x4001, 0xC90FDAA22168C235), + make_floatx80_init(0x4001, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0x4002, 0x96CBE3F9990E91A8), + make_floatx80_init(0x4002, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0x4002, 0xC90FDAA22168C235), + make_floatx80_init(0x4002, 0xE231D5F66595DA7B), + make_floatx80_init(0x4002, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0x4003, 0x8A3AE64F76F80584), + make_floatx80_init(0x4003, 0x96CBE3F9990E91A8), + make_floatx80_init(0x4003, 0xA35CE1A3BB251DCB), + make_floatx80_init(0x4003, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0x4003, 0xBC7EDCF7FF523611), + make_floatx80_init(0x4003, 0xC90FDAA22168C235), + make_floatx80_init(0x4003, 0xD5A0D84C437F4E58), + make_floatx80_init(0x4003, 0xE231D5F66595DA7B), + make_floatx80_init(0x4003, 0xEEC2D3A087AC669F), + make_floatx80_init(0x4003, 0xFB53D14AA9C2F2C2), + make_floatx80_init(0x4004, 0x83F2677A65ECBF73), + make_floatx80_init(0x4004, 0x8A3AE64F76F80584), + make_floatx80_init(0x4004, 0x9083652488034B96), + make_floatx80_init(0x4004, 0x96CBE3F9990E91A8), + make_floatx80_init(0x4004, 0x9D1462CEAA19D7B9), + make_floatx80_init(0x4004, 0xA35CE1A3BB251DCB), + make_floatx80_init(0x4004, 0xA9A56078CC3063DD), + make_floatx80_init(0x4004, 0xAFEDDF4DDD3BA9EE), + make_floatx80_init(0x4004, 0xB6365E22EE46F000), + make_floatx80_init(0x4004, 0xBC7EDCF7FF523611), + make_floatx80_init(0x4004, 0xC2C75BCD105D7C23), + make_floatx80_init(0x4004, 0xC90FDAA22168C235) +}; + +static const float32 pi_tbl2[65] = { + const_float32(0x21800000), + const_float32(0xA0D00000), + const_float32(0xA1E80000), + const_float32(0x21480000), + const_float32(0xA1200000), + const_float32(0x21FC0000), + const_float32(0x21100000), + const_float32(0xA1580000), + const_float32(0x21E00000), + const_float32(0x20B00000), + const_float32(0xA1880000), + const_float32(0x21C40000), + const_float32(0x20000000), + const_float32(0x21380000), + const_float32(0xA1300000), + const_float32(0x9FC00000), + const_float32(0x21000000), + const_float32(0xA1680000), + const_float32(0xA0A00000), + const_float32(0x20900000), + const_float32(0x21600000), + const_float32(0xA1080000), + const_float32(0x1F800000), + const_float32(0xA0B00000), + const_float32(0x20800000), + const_float32(0xA0200000), + const_float32(0x20E00000), + const_float32(0x1F000000), + const_float32(0x20000000), + const_float32(0x20600000), + const_float32(0x1F800000), + const_float32(0x1F000000), + const_float32(0x00000000), + const_float32(0x9F000000), + const_float32(0x9F800000), + const_float32(0xA0600000), + const_float32(0xA0000000), + const_float32(0x9F000000), + const_float32(0xA0E00000), + const_float32(0x20200000), + const_float32(0xA0800000), + const_float32(0x20B00000), + const_float32(0x9F800000), + const_float32(0x21080000), + const_float32(0xA1600000), + const_float32(0xA0900000), + const_float32(0x20A00000), + const_float32(0x21680000), + const_float32(0xA1000000), + const_float32(0x1FC00000), + const_float32(0x21300000), + const_float32(0xA1380000), + const_float32(0xA0000000), + const_float32(0xA1C40000), + const_float32(0x21880000), + const_float32(0xA0B00000), + const_float32(0xA1E00000), + const_float32(0x21580000), + const_float32(0xA1100000), + const_float32(0xA1FC0000), + const_float32(0x21200000), + const_float32(0xA1480000), + const_float32(0x21E80000), + const_float32(0x20D00000), + const_float32(0xA1800000), +}; #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 6d5bde0777..af8cdc2580 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 0x0f: /* ftan */ + gen_helper_ftan(cpu_env, cpu_dest, cpu_src); + break; case 0x10: /* fetox */ gen_helper_fetox(cpu_env, cpu_dest, cpu_src); break; From 5add1ac42faffd3d3639101fa778dced693a65a3 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:19 +0100 Subject: [PATCH 02/11] target/m68k: implement fsin Using a local m68k floatx80_sin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-3-laurent@vivier.eu> --- 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; From 68d0ed37866de2c5cafc4e2589e263961b2e8cd6 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:20 +0100 Subject: [PATCH 03/11] target/m68k: implement fcos Using a local m68k floatx80_cos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-4-laurent@vivier.eu> --- 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 = floatx80_sin(val->d, &env->fp_status); } + +void HELPER(fcos)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = 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) 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 *status) } } } + +/*---------------------------------------------------------------------------- + | 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 = 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(0, one_exp, one_sig); + } + + adjn = 1; + + 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 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; From 47446c9ce34b6685ffe20e829ff6c9aaefd3af0a Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:21 +0100 Subject: [PATCH 04/11] target/m68k: implement fsincos using floatx80_sin() and floatx80_cos() Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-5-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 11 +++++++++++ target/m68k/helper.h | 1 + target/m68k/translate.c | 8 ++++++++ 3 files changed, 20 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 71df19c685..36e34d42a8 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -607,3 +607,14 @@ void HELPER(fcos)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_cos(val->d, &env->fp_status); } + +void HELPER(fsincos)(CPUM68KState *env, FPReg *res0, FPReg *res1, FPReg *val) +{ + floatx80 a = val->d; + /* If res0 and res1 specify the same floating-point data register, + * the sine result is stored in the register, and the cosine + * result is discarded. + */ + res1->d = floatx80_cos(a, &env->fp_status); + res0->d = floatx80_sin(a, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 767baf75a3..a168ffbaea 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -78,6 +78,7 @@ 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) +DEF_HELPER_4(fsincos, void, env, fp, fp, fp) DEF_HELPER_3(mac_move, void, env, i32, i32) DEF_HELPER_3(macmulf, i64, env, i32, i32) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index f47388da4b..a78edd8825 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5159,6 +5159,14 @@ DISAS_INSN(fpu) case 0x6c: /* fdsub */ gen_helper_fdsub(cpu_env, cpu_dest, cpu_src, cpu_dest); break; + case 0x30: case 0x31: case 0x32: + case 0x33: case 0x34: case 0x35: + case 0x36: case 0x37: { + TCGv_ptr cpu_dest2 = gen_fp_ptr(REG(ext, 0)); + gen_helper_fsincos(cpu_env, cpu_dest, cpu_dest2, cpu_src); + tcg_temp_free_ptr(cpu_dest2); + } + break; case 0x38: /* fcmp */ gen_helper_fcmp(cpu_env, cpu_src, cpu_dest); return; From 8c992abc892c90caf1d4dd5b4482cda052a280ba Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:22 +0100 Subject: [PATCH 05/11] target/m68k: implement fatan Using a local m68k floatx80_atan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-6-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 + target/m68k/helper.h | 1 + target/m68k/softfloat.c | 200 ++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/softfloat_fpsp_tables.h | 131 ++++++++++++++++++ target/m68k/translate.c | 3 + 6 files changed, 341 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 36e34d42a8..47328490ee 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -618,3 +618,8 @@ void HELPER(fsincos)(CPUM68KState *env, FPReg *res0, FPReg *res1, FPReg *val) res1->d = floatx80_cos(a, &env->fp_status); res0->d = floatx80_sin(a, &env->fp_status); } + +void HELPER(fatan)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_atan(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index a168ffbaea..304569e997 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -79,6 +79,7 @@ DEF_HELPER_3(ftan, void, env, fp, fp) DEF_HELPER_3(fsin, void, env, fp, fp) DEF_HELPER_3(fcos, void, env, fp, fp) DEF_HELPER_4(fsincos, void, env, fp, fp, fp) +DEF_HELPER_3(fatan, 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 a3a12a0bcb..00ac9a1e0a 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -23,6 +23,9 @@ #include "fpu/softfloat-macros.h" #include "softfloat_fpsp_tables.h" +#define piby2_exp 0x3FFF +#define pi_sig LIT64(0xc90fdaa22168c235) + static floatx80 propagateFloatx80NaNOneArg(floatx80 a, float_status *status) { if (floatx80_is_signaling_nan(a, status)) { @@ -1967,3 +1970,200 @@ floatx80 floatx80_cos(floatx80 a, float_status *status) } } } + +/*---------------------------------------------------------------------------- + | Arc tangent + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_atan(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact, tbl_index; + floatx80 fp0, fp1, fp2, fp3, xsave; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + a = packFloatx80(aSign, piby2_exp, pi_sig); + float_raise(float_flag_inexact, status); + return floatx80_move(a, status); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 0); + } + + compact = floatx80_make_compact(aExp, aSig); + + 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; + + if (compact < 0x3FFB8000 || compact > 0x4002FFFF) { + /* |X| >= 16 or |X| < 1/16 */ + if (compact > 0x3FFF8000) { /* |X| >= 16 */ + if (compact > 0x40638000) { /* |X| > 2^(100) */ + fp0 = packFloatx80(aSign, piby2_exp, pi_sig); + fp1 = packFloatx80(aSign, 0x0001, one_sig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_sub(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + fp0 = a; + fp1 = packFloatx80(1, one_exp, one_sig); /* -1 */ + fp1 = floatx80_div(fp1, fp0, status); /* X' = -1/X */ + xsave = fp1; + fp0 = floatx80_mul(fp1, fp1, status); /* Y = X'*X' */ + fp1 = floatx80_mul(fp0, fp0, status); /* Z = Y*Y */ + fp3 = float64_to_floatx80(make_float64(0xBFB70BF398539E6A), + status); /* C5 */ + fp2 = float64_to_floatx80(make_float64(0x3FBC7187962D1D7D), + status); /* C4 */ + fp3 = floatx80_mul(fp3, fp1, status); /* Z*C5 */ + fp2 = floatx80_mul(fp2, fp1, status); /* Z*C4 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBFC24924827107B8), status), + status); /* C3+Z*C5 */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3FC999999996263E), status), + status); /* C2+Z*C4 */ + fp1 = floatx80_mul(fp1, fp3, status); /* Z*(C3+Z*C5) */ + fp2 = floatx80_mul(fp2, fp0, status); /* Y*(C2+Z*C4) */ + fp1 = floatx80_add(fp1, float64_to_floatx80( + make_float64(0xBFD5555555555536), status), + status); /* C1+Z*(C3+Z*C5) */ + fp0 = floatx80_mul(fp0, xsave, status); /* X'*Y */ + /* [Y*(C2+Z*C4)]+[C1+Z*(C3+Z*C5)] */ + fp1 = floatx80_add(fp1, fp2, status); + /* X'*Y*([B1+Z*(B3+Z*B5)]+[Y*(B2+Z*(B4+Z*B6))]) ?? */ + fp0 = floatx80_mul(fp0, fp1, status); + fp0 = floatx80_add(fp0, xsave, status); + fp1 = packFloatx80(aSign, piby2_exp, pi_sig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } else { /* |X| < 1/16 */ + if (compact < 0x3FD78000) { /* |X| < 2^(-40) */ + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_move(a, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + fp0 = a; + xsave = a; + fp0 = floatx80_mul(fp0, fp0, status); /* Y = X*X */ + fp1 = floatx80_mul(fp0, fp0, status); /* Z = Y*Y */ + fp2 = float64_to_floatx80(make_float64(0x3FB344447F876989), + status); /* B6 */ + fp3 = float64_to_floatx80(make_float64(0xBFB744EE7FAF45DB), + status); /* B5 */ + fp2 = floatx80_mul(fp2, fp1, status); /* Z*B6 */ + fp3 = floatx80_mul(fp3, fp1, status); /* Z*B5 */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3FBC71C646940220), status), + status); /* B4+Z*B6 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0xBFC24924921872F9), + status), status); /* B3+Z*B5 */ + fp2 = floatx80_mul(fp2, fp1, status); /* Z*(B4+Z*B6) */ + fp1 = floatx80_mul(fp1, fp3, status); /* Z*(B3+Z*B5) */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3FC9999999998FA9), status), + status); /* B2+Z*(B4+Z*B6) */ + fp1 = floatx80_add(fp1, float64_to_floatx80( + make_float64(0xBFD5555555555555), status), + status); /* B1+Z*(B3+Z*B5) */ + fp2 = floatx80_mul(fp2, fp0, status); /* Y*(B2+Z*(B4+Z*B6)) */ + fp0 = floatx80_mul(fp0, xsave, status); /* X*Y */ + /* [B1+Z*(B3+Z*B5)]+[Y*(B2+Z*(B4+Z*B6))] */ + fp1 = floatx80_add(fp1, fp2, status); + /* X*Y*([B1+Z*(B3+Z*B5)]+[Y*(B2+Z*(B4+Z*B6))]) */ + fp0 = floatx80_mul(fp0, fp1, status); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, xsave, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } + } else { + aSig &= LIT64(0xF800000000000000); + aSig |= LIT64(0x0400000000000000); + xsave = packFloatx80(aSign, aExp, aSig); /* F */ + fp0 = a; + fp1 = a; /* X */ + fp2 = packFloatx80(0, one_exp, one_sig); /* 1 */ + fp1 = floatx80_mul(fp1, xsave, status); /* X*F */ + fp0 = floatx80_sub(fp0, xsave, status); /* X-F */ + fp1 = floatx80_add(fp1, fp2, status); /* 1 + X*F */ + fp0 = floatx80_div(fp0, fp1, status); /* U = (X-F)/(1+X*F) */ + + tbl_index = compact; + + tbl_index &= 0x7FFF0000; + tbl_index -= 0x3FFB0000; + tbl_index >>= 1; + tbl_index += compact & 0x00007800; + tbl_index >>= 11; + + fp3 = atan_tbl[tbl_index]; + + fp3.high |= aSign ? 0x8000 : 0; /* ATAN(F) */ + + fp1 = floatx80_mul(fp0, fp0, status); /* V = U*U */ + fp2 = float64_to_floatx80(make_float64(0xBFF6687E314987D8), + status); /* A3 */ + fp2 = floatx80_add(fp2, fp1, status); /* A3+V */ + fp2 = floatx80_mul(fp2, fp1, status); /* V*(A3+V) */ + fp1 = floatx80_mul(fp1, fp0, status); /* U*V */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x4002AC6934A26DB3), status), + status); /* A2+V*(A3+V) */ + fp1 = floatx80_mul(fp1, float64_to_floatx80( + make_float64(0xBFC2476F4E1DA28E), status), + status); /* A1+U*V */ + fp1 = floatx80_mul(fp1, fp2, status); /* A1*U*V*(A2+V*(A3+V)) */ + fp0 = floatx80_add(fp0, fp1, status); /* ATAN(U) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, fp3, status); /* ATAN(X) */ + + float_raise(float_flag_inexact, status); + + return a; + } +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index 4fd5b2c609..eec45f3ffe 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -37,4 +37,5 @@ 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); +floatx80 floatx80_atan(floatx80 a, float_status *status); #endif diff --git a/target/m68k/softfloat_fpsp_tables.h b/target/m68k/softfloat_fpsp_tables.h index a9c86a5af2..3f1419ee6e 100644 --- a/target/m68k/softfloat_fpsp_tables.h +++ b/target/m68k/softfloat_fpsp_tables.h @@ -507,4 +507,135 @@ static const float32 pi_tbl2[65] = { const_float32(0x20D00000), const_float32(0xA1800000), }; + +static const floatx80 atan_tbl[128] = { + make_floatx80_init(0x3FFB, 0x83D152C5060B7A51), + make_floatx80_init(0x3FFB, 0x8BC8544565498B8B), + make_floatx80_init(0x3FFB, 0x93BE406017626B0D), + make_floatx80_init(0x3FFB, 0x9BB3078D35AEC202), + make_floatx80_init(0x3FFB, 0xA3A69A525DDCE7DE), + make_floatx80_init(0x3FFB, 0xAB98E94362765619), + make_floatx80_init(0x3FFB, 0xB389E502F9C59862), + make_floatx80_init(0x3FFB, 0xBB797E436B09E6FB), + make_floatx80_init(0x3FFB, 0xC367A5C739E5F446), + make_floatx80_init(0x3FFB, 0xCB544C61CFF7D5C6), + make_floatx80_init(0x3FFB, 0xD33F62F82488533E), + make_floatx80_init(0x3FFB, 0xDB28DA8162404C77), + make_floatx80_init(0x3FFB, 0xE310A4078AD34F18), + make_floatx80_init(0x3FFB, 0xEAF6B0A8188EE1EB), + make_floatx80_init(0x3FFB, 0xF2DAF1949DBE79D5), + make_floatx80_init(0x3FFB, 0xFABD581361D47E3E), + make_floatx80_init(0x3FFC, 0x8346AC210959ECC4), + make_floatx80_init(0x3FFC, 0x8B232A08304282D8), + make_floatx80_init(0x3FFC, 0x92FB70B8D29AE2F9), + make_floatx80_init(0x3FFC, 0x9ACF476F5CCD1CB4), + make_floatx80_init(0x3FFC, 0xA29E76304954F23F), + make_floatx80_init(0x3FFC, 0xAA68C5D08AB85230), + make_floatx80_init(0x3FFC, 0xB22DFFFD9D539F83), + make_floatx80_init(0x3FFC, 0xB9EDEF453E900EA5), + make_floatx80_init(0x3FFC, 0xC1A85F1CC75E3EA5), + make_floatx80_init(0x3FFC, 0xC95D1BE828138DE6), + make_floatx80_init(0x3FFC, 0xD10BF300840D2DE4), + make_floatx80_init(0x3FFC, 0xD8B4B2BA6BC05E7A), + make_floatx80_init(0x3FFC, 0xE0572A6BB42335F6), + make_floatx80_init(0x3FFC, 0xE7F32A70EA9CAA8F), + make_floatx80_init(0x3FFC, 0xEF88843264ECEFAA), + make_floatx80_init(0x3FFC, 0xF7170A28ECC06666), + make_floatx80_init(0x3FFD, 0x812FD288332DAD32), + make_floatx80_init(0x3FFD, 0x88A8D1B1218E4D64), + make_floatx80_init(0x3FFD, 0x9012AB3F23E4AEE8), + make_floatx80_init(0x3FFD, 0x976CC3D411E7F1B9), + make_floatx80_init(0x3FFD, 0x9EB689493889A227), + make_floatx80_init(0x3FFD, 0xA5EF72C34487361B), + make_floatx80_init(0x3FFD, 0xAD1700BAF07A7227), + make_floatx80_init(0x3FFD, 0xB42CBCFAFD37EFB7), + make_floatx80_init(0x3FFD, 0xBB303A940BA80F89), + make_floatx80_init(0x3FFD, 0xC22115C6FCAEBBAF), + make_floatx80_init(0x3FFD, 0xC8FEF3E686331221), + make_floatx80_init(0x3FFD, 0xCFC98330B4000C70), + make_floatx80_init(0x3FFD, 0xD6807AA1102C5BF9), + make_floatx80_init(0x3FFD, 0xDD2399BC31252AA3), + make_floatx80_init(0x3FFD, 0xE3B2A8556B8FC517), + make_floatx80_init(0x3FFD, 0xEA2D764F64315989), + make_floatx80_init(0x3FFD, 0xF3BF5BF8BAD1A21D), + make_floatx80_init(0x3FFE, 0x801CE39E0D205C9A), + make_floatx80_init(0x3FFE, 0x8630A2DADA1ED066), + make_floatx80_init(0x3FFE, 0x8C1AD445F3E09B8C), + make_floatx80_init(0x3FFE, 0x91DB8F1664F350E2), + make_floatx80_init(0x3FFE, 0x97731420365E538C), + make_floatx80_init(0x3FFE, 0x9CE1C8E6A0B8CDBA), + make_floatx80_init(0x3FFE, 0xA22832DBCADAAE09), + make_floatx80_init(0x3FFE, 0xA746F2DDB7602294), + make_floatx80_init(0x3FFE, 0xAC3EC0FB997DD6A2), + make_floatx80_init(0x3FFE, 0xB110688AEBDC6F6A), + make_floatx80_init(0x3FFE, 0xB5BCC49059ECC4B0), + make_floatx80_init(0x3FFE, 0xBA44BC7DD470782F), + make_floatx80_init(0x3FFE, 0xBEA94144FD049AAC), + make_floatx80_init(0x3FFE, 0xC2EB4ABB661628B6), + make_floatx80_init(0x3FFE, 0xC70BD54CE602EE14), + make_floatx80_init(0x3FFE, 0xCD000549ADEC7159), + make_floatx80_init(0x3FFE, 0xD48457D2D8EA4EA3), + make_floatx80_init(0x3FFE, 0xDB948DA712DECE3B), + make_floatx80_init(0x3FFE, 0xE23855F969E8096A), + make_floatx80_init(0x3FFE, 0xE8771129C4353259), + make_floatx80_init(0x3FFE, 0xEE57C16E0D379C0D), + make_floatx80_init(0x3FFE, 0xF3E10211A87C3779), + make_floatx80_init(0x3FFE, 0xF919039D758B8D41), + make_floatx80_init(0x3FFE, 0xFE058B8F64935FB3), + make_floatx80_init(0x3FFF, 0x8155FB497B685D04), + make_floatx80_init(0x3FFF, 0x83889E3549D108E1), + make_floatx80_init(0x3FFF, 0x859CFA76511D724B), + make_floatx80_init(0x3FFF, 0x87952ECFFF8131E7), + make_floatx80_init(0x3FFF, 0x89732FD19557641B), + make_floatx80_init(0x3FFF, 0x8B38CAD101932A35), + make_floatx80_init(0x3FFF, 0x8CE7A8D8301EE6B5), + make_floatx80_init(0x3FFF, 0x8F46A39E2EAE5281), + make_floatx80_init(0x3FFF, 0x922DA7D791888487), + make_floatx80_init(0x3FFF, 0x94D19FCBDEDF5241), + make_floatx80_init(0x3FFF, 0x973AB94419D2A08B), + make_floatx80_init(0x3FFF, 0x996FF00E08E10B96), + make_floatx80_init(0x3FFF, 0x9B773F9512321DA7), + make_floatx80_init(0x3FFF, 0x9D55CC320F935624), + make_floatx80_init(0x3FFF, 0x9F100575006CC571), + make_floatx80_init(0x3FFF, 0xA0A9C290D97CC06C), + make_floatx80_init(0x3FFF, 0xA22659EBEBC0630A), + make_floatx80_init(0x3FFF, 0xA388B4AFF6EF0EC9), + make_floatx80_init(0x3FFF, 0xA4D35F1061D292C4), + make_floatx80_init(0x3FFF, 0xA60895DCFBE3187E), + make_floatx80_init(0x3FFF, 0xA72A51DC7367BEAC), + make_floatx80_init(0x3FFF, 0xA83A51530956168F), + make_floatx80_init(0x3FFF, 0xA93A20077539546E), + make_floatx80_init(0x3FFF, 0xAA9E7245023B2605), + make_floatx80_init(0x3FFF, 0xAC4C84BA6FE4D58F), + make_floatx80_init(0x3FFF, 0xADCE4A4A606B9712), + make_floatx80_init(0x3FFF, 0xAF2A2DCD8D263C9C), + make_floatx80_init(0x3FFF, 0xB0656F81F22265C7), + make_floatx80_init(0x3FFF, 0xB18465150F71496A), + make_floatx80_init(0x3FFF, 0xB28AAA156F9ADA35), + make_floatx80_init(0x3FFF, 0xB37B44FF3766B895), + make_floatx80_init(0x3FFF, 0xB458C3DCE9630433), + make_floatx80_init(0x3FFF, 0xB525529D562246BD), + make_floatx80_init(0x3FFF, 0xB5E2CCA95F9D88CC), + make_floatx80_init(0x3FFF, 0xB692CADA7ACA1ADA), + make_floatx80_init(0x3FFF, 0xB736AEA7A6925838), + make_floatx80_init(0x3FFF, 0xB7CFAB287E9F7B36), + make_floatx80_init(0x3FFF, 0xB85ECC66CB219835), + make_floatx80_init(0x3FFF, 0xB8E4FD5A20A593DA), + make_floatx80_init(0x3FFF, 0xB99F41F64AFF9BB5), + make_floatx80_init(0x3FFF, 0xBA7F1E17842BBE7B), + make_floatx80_init(0x3FFF, 0xBB4712857637E17D), + make_floatx80_init(0x3FFF, 0xBBFABE8A4788DF6F), + make_floatx80_init(0x3FFF, 0xBC9D0FAD2B689D79), + make_floatx80_init(0x3FFF, 0xBD306A39471ECD86), + make_floatx80_init(0x3FFF, 0xBDB6C731856AF18A), + make_floatx80_init(0x3FFF, 0xBE31CAC502E80D70), + make_floatx80_init(0x3FFF, 0xBEA2D55CE33194E2), + make_floatx80_init(0x3FFF, 0xBF0B10B7C03128F0), + make_floatx80_init(0x3FFF, 0xBF6B7A18DACB778D), + make_floatx80_init(0x3FFF, 0xBFC4EA4663FA18F6), + make_floatx80_init(0x3FFF, 0xC0181BDE8B89A454), + make_floatx80_init(0x3FFF, 0xC065B066CFBF6439), + make_floatx80_init(0x3FFF, 0xC0AE345F56340AE6), + make_floatx80_init(0x3FFF, 0xC0F222919CB9E6A7) +}; #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index a78edd8825..88015e7ed8 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 0x0a: /* fatan */ + gen_helper_fatan(cpu_env, cpu_dest, cpu_src); + break; case 0x0e: /* fsin */ gen_helper_fsin(cpu_env, cpu_dest, cpu_src); break; From bc20b34e03b51725d7f008551b5f56f1da07ab6a Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:23 +0100 Subject: [PATCH 06/11] target/m68k: implement fasin Using a local m68k floatx80_asin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-7-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 ++++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 65 ++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 ++ 5 files changed, 75 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 47328490ee..972cc97d96 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -623,3 +623,8 @@ void HELPER(fatan)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_atan(val->d, &env->fp_status); } + +void HELPER(fasin)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_asin(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 304569e997..e1aca375e0 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -80,6 +80,7 @@ DEF_HELPER_3(fsin, void, env, fp, fp) DEF_HELPER_3(fcos, void, env, fp, fp) DEF_HELPER_4(fsincos, void, env, fp, fp, fp) DEF_HELPER_3(fatan, void, env, fp, fp) +DEF_HELPER_3(fasin, 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 00ac9a1e0a..91f0435ac3 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2167,3 +2167,68 @@ floatx80 floatx80_atan(floatx80 a, float_status *status) return a; } } + +/*---------------------------------------------------------------------------- + | Arc sine + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_asin(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1, fp2, one; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF && (uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 0); + } + + compact = floatx80_make_compact(aExp, aSig); + + if (compact >= 0x3FFF8000) { /* |X| >= 1 */ + if (aExp == one_exp && aSig == one_sig) { /* |X| == 1 */ + float_raise(float_flag_inexact, status); + a = packFloatx80(aSign, piby2_exp, pi_sig); + return floatx80_move(a, status); + } else { /* |X| > 1 */ + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + + } /* |X| < 1 */ + + 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; + + one = packFloatx80(0, one_exp, one_sig); + fp0 = a; + + fp1 = floatx80_sub(one, fp0, status); /* 1 - X */ + fp2 = floatx80_add(one, fp0, status); /* 1 + X */ + fp1 = floatx80_mul(fp2, fp1, status); /* (1+X)*(1-X) */ + fp1 = floatx80_sqrt(fp1, status); /* SQRT((1+X)*(1-X)) */ + fp0 = floatx80_div(fp0, fp1, status); /* X/SQRT((1+X)*(1-X)) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_atan(fp0, status); /* ATAN(X/SQRT((1+X)*(1-X))) */ + + float_raise(float_flag_inexact, status); + + return a; +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index eec45f3ffe..ca0eb674aa 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -38,4 +38,5 @@ floatx80 floatx80_tan(floatx80 a, float_status *status); floatx80 floatx80_sin(floatx80 a, float_status *status); floatx80 floatx80_cos(floatx80 a, float_status *status); floatx80 floatx80_atan(floatx80 a, float_status *status); +floatx80 floatx80_asin(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 88015e7ed8..d4169c4533 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5060,6 +5060,9 @@ DISAS_INSN(fpu) case 0x0a: /* fatan */ gen_helper_fatan(cpu_env, cpu_dest, cpu_src); break; + case 0x0c: /* fasin */ + gen_helper_fasin(cpu_env, cpu_dest, cpu_src); + break; case 0x0e: /* fsin */ gen_helper_fsin(cpu_env, cpu_dest, cpu_src); break; From c84813b807fc82c68ff6d72387f95b15ad283bf6 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:24 +0100 Subject: [PATCH 07/11] target/m68k: implement facos Using a local m68k floatx80_acos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-8-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 +++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 70 ++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 ++ 5 files changed, 80 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 972cc97d96..18ad6999cb 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -628,3 +628,8 @@ void HELPER(fasin)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_asin(val->d, &env->fp_status); } + +void HELPER(facos)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_acos(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index e1aca375e0..83247a8143 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -81,6 +81,7 @@ DEF_HELPER_3(fcos, void, env, fp, fp) DEF_HELPER_4(fsincos, void, env, fp, fp, fp) DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) +DEF_HELPER_3(facos, 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 91f0435ac3..3d66f6946f 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -23,6 +23,7 @@ #include "fpu/softfloat-macros.h" #include "softfloat_fpsp_tables.h" +#define pi_exp 0x4000 #define piby2_exp 0x3FFF #define pi_sig LIT64(0xc90fdaa22168c235) @@ -2232,3 +2233,72 @@ floatx80 floatx80_asin(floatx80 a, float_status *status) return a; } + +/*---------------------------------------------------------------------------- + | Arc cosine + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_acos(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1, one; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF && (uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + if (aExp == 0 && aSig == 0) { + float_raise(float_flag_inexact, status); + return roundAndPackFloatx80(status->floatx80_rounding_precision, 0, + piby2_exp, pi_sig, 0, status); + } + + compact = floatx80_make_compact(aExp, aSig); + + if (compact >= 0x3FFF8000) { /* |X| >= 1 */ + if (aExp == one_exp && aSig == one_sig) { /* |X| == 1 */ + if (aSign) { /* X == -1 */ + a = packFloatx80(0, pi_exp, pi_sig); + float_raise(float_flag_inexact, status); + return floatx80_move(a, status); + } else { /* X == +1 */ + return packFloatx80(0, 0, 0); + } + } else { /* |X| > 1 */ + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + } /* |X| < 1 */ + + 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; + + one = packFloatx80(0, one_exp, one_sig); + fp0 = a; + + fp1 = floatx80_add(one, fp0, status); /* 1 + X */ + fp0 = floatx80_sub(one, fp0, status); /* 1 - X */ + fp0 = floatx80_div(fp0, fp1, status); /* (1-X)/(1+X) */ + fp0 = floatx80_sqrt(fp0, status); /* SQRT((1-X)/(1+X)) */ + fp0 = floatx80_atan(fp0, status); /* ATAN(SQRT((1-X)/(1+X))) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, fp0, status); /* 2 * ATAN(SQRT((1-X)/(1+X))) */ + + float_raise(float_flag_inexact, status); + + return a; +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index ca0eb674aa..1140491c81 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -39,4 +39,5 @@ floatx80 floatx80_sin(floatx80 a, float_status *status); floatx80 floatx80_cos(floatx80 a, float_status *status); floatx80 floatx80_atan(floatx80 a, float_status *status); floatx80 floatx80_asin(floatx80 a, float_status *status); +floatx80 floatx80_acos(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index d4169c4533..5fad76c785 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5105,6 +5105,9 @@ DISAS_INSN(fpu) case 0x5e: /* fdneg */ gen_helper_fdneg(cpu_env, cpu_dest, cpu_src); break; + case 0x1c: /* facos */ + gen_helper_facos(cpu_env, cpu_dest, cpu_src); + break; case 0x1d: /* fcos */ gen_helper_fcos(cpu_env, cpu_dest, cpu_src); break; From e3655afa137b2e0999537eef273a2845ba21d68c Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:25 +0100 Subject: [PATCH 08/11] target/m68k: implement fatanh Using a local m68k floatx80_atanh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-9-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 ++++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 65 ++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 ++ 5 files changed, 75 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 18ad6999cb..38b663e1d2 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -633,3 +633,8 @@ void HELPER(facos)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_acos(val->d, &env->fp_status); } + +void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_atanh(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 83247a8143..092baec3d5 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -82,6 +82,7 @@ DEF_HELPER_4(fsincos, void, env, fp, fp, fp) DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) +DEF_HELPER_3(fatanh, 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 3d66f6946f..5ce8413e96 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2302,3 +2302,68 @@ floatx80 floatx80_acos(floatx80 a, float_status *status) return a; } + +/*---------------------------------------------------------------------------- + | Hyperbolic arc tangent + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_atanh(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1, fp2, one; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF && (uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 0); + } + + compact = floatx80_make_compact(aExp, aSig); + + if (compact >= 0x3FFF8000) { /* |X| >= 1 */ + if (aExp == one_exp && aSig == one_sig) { /* |X| == 1 */ + float_raise(float_flag_divbyzero, status); + return packFloatx80(aSign, floatx80_infinity.high, + floatx80_infinity.low); + } else { /* |X| > 1 */ + float_raise(float_flag_invalid, status); + return floatx80_default_nan(status); + } + } /* |X| < 1 */ + + 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; + + one = packFloatx80(0, one_exp, one_sig); + fp2 = packFloatx80(aSign, 0x3FFE, one_sig); /* SIGN(X) * (1/2) */ + fp0 = packFloatx80(0, aExp, aSig); /* Y = |X| */ + fp1 = packFloatx80(1, aExp, aSig); /* -Y */ + fp0 = floatx80_add(fp0, fp0, status); /* 2Y */ + fp1 = floatx80_add(fp1, one, status); /* 1-Y */ + fp0 = floatx80_div(fp0, fp1, status); /* Z = 2Y/(1-Y) */ + fp0 = floatx80_lognp1(fp0, status); /* LOG1P(Z) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, fp2, + status); /* ATANH(X) = SIGN(X) * (1/2) * LOG1P(Z) */ + + float_raise(float_flag_inexact, status); + + return a; +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index 1140491c81..e9943aed20 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -40,4 +40,5 @@ floatx80 floatx80_cos(floatx80 a, float_status *status); floatx80 floatx80_atan(floatx80 a, float_status *status); floatx80 floatx80_asin(floatx80 a, float_status *status); floatx80 floatx80_acos(floatx80 a, float_status *status); +floatx80 floatx80_atanh(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 5fad76c785..2f7caa0ca0 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5063,6 +5063,9 @@ DISAS_INSN(fpu) case 0x0c: /* fasin */ gen_helper_fasin(cpu_env, cpu_dest, cpu_src); break; + case 0x0d: /* fatanh */ + gen_helper_fatanh(cpu_env, cpu_dest, cpu_src); + break; case 0x0e: /* fsin */ gen_helper_fsin(cpu_env, cpu_dest, cpu_src); break; From 9937b02965c2a7dbc4b21d98e29b082bab095aa5 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:26 +0100 Subject: [PATCH 09/11] target/m68k: implement ftanh Using local m68k floatx80_tanh() and floatx80_etoxm1() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-10-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 + target/m68k/helper.h | 1 + target/m68k/softfloat.c | 366 +++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 2 + target/m68k/translate.c | 3 + 5 files changed, 377 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 38b663e1d2..7d68879f34 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -638,3 +638,8 @@ void HELPER(fatanh)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_atanh(val->d, &env->fp_status); } + +void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_tanh(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 092baec3d5..f100141367 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -83,6 +83,7 @@ DEF_HELPER_3(fatan, void, env, fp, fp) DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp) +DEF_HELPER_3(ftanh, 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 5ce8413e96..4ce5783f03 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2367,3 +2367,369 @@ floatx80 floatx80_atanh(floatx80 a, float_status *status) return a; } + +/*---------------------------------------------------------------------------- + | e to x minus 1 + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_etoxm1(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact, n, j, m, m1; + floatx80 fp0, fp1, fp2, fp3, l2, sc, onebysc; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + if (aSign) { + return packFloatx80(aSign, one_exp, one_sig); + } + return packFloatx80(0, floatx80_infinity.high, + floatx80_infinity.low); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 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; + + if (aExp >= 0x3FFD) { /* |X| >= 1/4 */ + compact = floatx80_make_compact(aExp, aSig); + + if (compact <= 0x4004C215) { /* |X| <= 70 log2 */ + fp0 = a; + fp1 = a; + fp0 = floatx80_mul(fp0, float32_to_floatx80( + make_float32(0x42B8AA3B), status), + status); /* 64/log2 * X */ + n = floatx80_to_int32(fp0, status); /* int(64/log2*X) */ + fp0 = int32_to_floatx80(n, status); + + j = n & 0x3F; /* J = N mod 64 */ + m = n / 64; /* NOTE: this is really arithmetic right shift by 6 */ + if (n < 0 && j) { + /* arithmetic right shift is division and + * round towards minus infinity + */ + m--; + } + m1 = -m; + /*m += 0x3FFF; // biased exponent of 2^(M) */ + /*m1 += 0x3FFF; // biased exponent of -2^(-M) */ + + fp2 = fp0; /* N */ + fp0 = floatx80_mul(fp0, float32_to_floatx80( + make_float32(0xBC317218), status), + status); /* N * L1, L1 = lead(-log2/64) */ + l2 = packFloatx80(0, 0x3FDC, LIT64(0x82E308654361C4C6)); + fp2 = floatx80_mul(fp2, l2, status); /* N * L2, L1+L2 = -log2/64 */ + fp0 = floatx80_add(fp0, fp1, status); /* X + N*L1 */ + fp0 = floatx80_add(fp0, fp2, status); /* R */ + + fp1 = floatx80_mul(fp0, fp0, status); /* S = R*R */ + fp2 = float32_to_floatx80(make_float32(0x3950097B), + status); /* A6 */ + fp2 = floatx80_mul(fp2, fp1, status); /* fp2 is S*A6 */ + fp3 = floatx80_mul(float32_to_floatx80(make_float32(0x3AB60B6A), + status), fp1, status); /* fp3 is S*A5 */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3F81111111174385), status), + status); /* fp2 IS A4+S*A6 */ + fp3 = floatx80_add(fp3, float64_to_floatx80( + make_float64(0x3FA5555555554F5A), status), + status); /* fp3 is A3+S*A5 */ + fp2 = floatx80_mul(fp2, fp1, status); /* fp2 IS S*(A4+S*A6) */ + fp3 = floatx80_mul(fp3, fp1, status); /* fp3 IS S*(A3+S*A5) */ + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3FC5555555555555), status), + status); /* fp2 IS A2+S*(A4+S*A6) */ + fp3 = floatx80_add(fp3, float32_to_floatx80( + make_float32(0x3F000000), status), + status); /* fp3 IS A1+S*(A3+S*A5) */ + fp2 = floatx80_mul(fp2, fp1, + status); /* fp2 IS S*(A2+S*(A4+S*A6)) */ + fp1 = floatx80_mul(fp1, fp3, + status); /* fp1 IS S*(A1+S*(A3+S*A5)) */ + fp2 = floatx80_mul(fp2, fp0, + status); /* fp2 IS R*S*(A2+S*(A4+S*A6)) */ + fp0 = floatx80_add(fp0, fp1, + status); /* fp0 IS R+S*(A1+S*(A3+S*A5)) */ + fp0 = floatx80_add(fp0, fp2, status); /* fp0 IS EXP(R) - 1 */ + + fp0 = floatx80_mul(fp0, exp_tbl[j], + status); /* 2^(J/64)*(Exp(R)-1) */ + + if (m >= 64) { + fp1 = float32_to_floatx80(exp_tbl2[j], status); + onebysc = packFloatx80(1, m1 + 0x3FFF, one_sig); /* -2^(-M) */ + fp1 = floatx80_add(fp1, onebysc, status); + fp0 = floatx80_add(fp0, fp1, status); + fp0 = floatx80_add(fp0, exp_tbl[j], status); + } else if (m < -3) { + fp0 = floatx80_add(fp0, float32_to_floatx80(exp_tbl2[j], + status), status); + fp0 = floatx80_add(fp0, exp_tbl[j], status); + onebysc = packFloatx80(1, m1 + 0x3FFF, one_sig); /* -2^(-M) */ + fp0 = floatx80_add(fp0, onebysc, status); + } else { /* -3 <= m <= 63 */ + fp1 = exp_tbl[j]; + fp0 = floatx80_add(fp0, float32_to_floatx80(exp_tbl2[j], + status), status); + onebysc = packFloatx80(1, m1 + 0x3FFF, one_sig); /* -2^(-M) */ + fp1 = floatx80_add(fp1, onebysc, status); + fp0 = floatx80_add(fp0, fp1, status); + } + + sc = packFloatx80(0, m + 0x3FFF, one_sig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, sc, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { /* |X| > 70 log2 */ + if (aSign) { + fp0 = float32_to_floatx80(make_float32(0xBF800000), + status); /* -1 */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, float32_to_floatx80( + make_float32(0x00800000), status), + status); /* -1 + 2^(-126) */ + + float_raise(float_flag_inexact, status); + + return a; + } else { + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + return floatx80_etox(a, status); + } + } + } else { /* |X| < 1/4 */ + if (aExp >= 0x3FBE) { + fp0 = a; + fp0 = floatx80_mul(fp0, fp0, status); /* S = X*X */ + fp1 = float32_to_floatx80(make_float32(0x2F30CAA8), + status); /* B12 */ + fp1 = floatx80_mul(fp1, fp0, status); /* S * B12 */ + fp2 = float32_to_floatx80(make_float32(0x310F8290), + status); /* B11 */ + fp1 = floatx80_add(fp1, float32_to_floatx80( + make_float32(0x32D73220), status), + status); /* B10 */ + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, fp0, status); + fp2 = floatx80_add(fp2, float32_to_floatx80( + make_float32(0x3493F281), status), + status); /* B9 */ + fp1 = floatx80_add(fp1, float64_to_floatx80( + make_float64(0x3EC71DE3A5774682), status), + status); /* B8 */ + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, fp0, status); + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3EFA01A019D7CB68), status), + status); /* B7 */ + fp1 = floatx80_add(fp1, float64_to_floatx80( + make_float64(0x3F2A01A01A019DF3), status), + status); /* B6 */ + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, fp0, status); + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3F56C16C16C170E2), status), + status); /* B5 */ + fp1 = floatx80_add(fp1, float64_to_floatx80( + make_float64(0x3F81111111111111), status), + status); /* B4 */ + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, fp0, status); + fp2 = floatx80_add(fp2, float64_to_floatx80( + make_float64(0x3FA5555555555555), status), + status); /* B3 */ + fp3 = packFloatx80(0, 0x3FFC, LIT64(0xAAAAAAAAAAAAAAAB)); + fp1 = floatx80_add(fp1, fp3, status); /* B2 */ + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, fp0, status); + + fp2 = floatx80_mul(fp2, fp0, status); + fp1 = floatx80_mul(fp1, a, status); + + fp0 = floatx80_mul(fp0, float32_to_floatx80( + make_float32(0x3F000000), status), + status); /* S*B1 */ + fp1 = floatx80_add(fp1, fp2, status); /* Q */ + fp0 = floatx80_add(fp0, fp1, status); /* S*B1+Q */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, a, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { /* |X| < 2^(-65) */ + sc = packFloatx80(1, 1, one_sig); + fp0 = a; + + if (aExp < 0x0033) { /* |X| < 2^(-16382) */ + fp0 = floatx80_mul(fp0, float64_to_floatx80( + make_float64(0x48B0000000000000), status), + status); + fp0 = floatx80_add(fp0, sc, status); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, float64_to_floatx80( + make_float64(0x3730000000000000), status), + status); + } else { + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, sc, status); + } + + float_raise(float_flag_inexact, status); + + return a; + } + } +} + +/*---------------------------------------------------------------------------- + | Hyperbolic tangent + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_tanh(floatx80 a, float_status *status) +{ + flag aSign, vSign; + int32_t aExp, vExp; + uint64_t aSig, vSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1; + uint32_t sign; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + return packFloatx80(aSign, one_exp, one_sig); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 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); + + if (compact < 0x3FD78000 || compact > 0x3FFFDDCE) { + /* TANHBORS */ + if (compact < 0x3FFF8000) { + /* TANHSM */ + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_move(a, status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + if (compact > 0x40048AA1) { + /* TANHHUGE */ + sign = 0x3F800000; + sign |= aSign ? 0x80000000 : 0x00000000; + fp0 = float32_to_floatx80(make_float32(sign), status); + sign &= 0x80000000; + sign ^= 0x80800000; /* -SIGN(X)*EPS */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, float32_to_floatx80(make_float32(sign), + status), status); + + float_raise(float_flag_inexact, status); + + return a; + } else { + fp0 = packFloatx80(0, aExp + 1, aSig); /* Y = 2|X| */ + fp0 = floatx80_etox(fp0, status); /* FP0 IS EXP(Y) */ + fp0 = floatx80_add(fp0, float32_to_floatx80( + make_float32(0x3F800000), + status), status); /* EXP(Y)+1 */ + sign = aSign ? 0x80000000 : 0x00000000; + fp1 = floatx80_div(float32_to_floatx80(make_float32( + sign ^ 0xC0000000), status), fp0, + status); /* -SIGN(X)*2 / [EXP(Y)+1] */ + fp0 = float32_to_floatx80(make_float32(sign | 0x3F800000), + status); /* SIGN */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp1, fp0, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } + } else { /* 2**(-40) < |X| < (5/2)LOG2 */ + fp0 = packFloatx80(0, aExp + 1, aSig); /* Y = 2|X| */ + fp0 = floatx80_etoxm1(fp0, status); /* FP0 IS Z = EXPM1(Y) */ + fp1 = floatx80_add(fp0, float32_to_floatx80(make_float32(0x40000000), + status), + status); /* Z+2 */ + + vSign = extractFloatx80Sign(fp1); + vExp = extractFloatx80Exp(fp1); + vSig = extractFloatx80Frac(fp1); + + fp1 = packFloatx80(vSign ^ aSign, vExp, vSig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_div(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index e9943aed20..4cdb5a49ca 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -41,4 +41,6 @@ floatx80 floatx80_atan(floatx80 a, float_status *status); floatx80 floatx80_asin(floatx80 a, float_status *status); floatx80 floatx80_acos(floatx80 a, float_status *status); floatx80 floatx80_atanh(floatx80 a, float_status *status); +floatx80 floatx80_etoxm1(floatx80 a, float_status *status); +floatx80 floatx80_tanh(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 2f7caa0ca0..0caae904b5 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 0x09: /* ftanh */ + gen_helper_ftanh(cpu_env, cpu_dest, cpu_src); + break; case 0x0a: /* fatan */ gen_helper_fatan(cpu_env, cpu_dest, cpu_src); break; From eee6b892a6063c2807ecf33a2f62a8d7cca7652c Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:27 +0100 Subject: [PATCH 10/11] target/m68k: implement fsinh Using a local m68k floatx80_sinh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-11-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 +++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 89 ++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 ++ 5 files changed, 99 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 7d68879f34..4c969dfe00 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -643,3 +643,8 @@ void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_tanh(val->d, &env->fp_status); } + +void HELPER(fsinh)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_sinh(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index f100141367..acdca1af03 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -84,6 +84,7 @@ DEF_HELPER_3(fasin, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp) DEF_HELPER_3(ftanh, void, env, fp, fp) +DEF_HELPER_3(fsinh, 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 4ce5783f03..1528bfd147 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2733,3 +2733,92 @@ floatx80 floatx80_tanh(floatx80 a, float_status *status) return a; } } + +/*---------------------------------------------------------------------------- + | Hyperbolic sine + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_sinh(floatx80 a, float_status *status) +{ + flag aSign; + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1, fp2; + float32 fact; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + aSign = extractFloatx80Sign(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + return packFloatx80(aSign, floatx80_infinity.high, + floatx80_infinity.low); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(aSign, 0, 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); + + if (compact > 0x400CB167) { + /* SINHBIG */ + if (compact > 0x400CB2B3) { + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + return roundAndPackFloatx80(status->floatx80_rounding_precision, + aSign, 0x8000, aSig, 0, status); + } else { + fp0 = floatx80_abs(a); /* Y = |X| */ + fp0 = floatx80_sub(fp0, float64_to_floatx80( + make_float64(0x40C62D38D3D64634), status), + status); /* (|X|-16381LOG2_LEAD) */ + fp0 = floatx80_sub(fp0, float64_to_floatx80( + make_float64(0x3D6F90AEB1E75CC7), status), + status); /* |X| - 16381 LOG2, ACCURATE */ + fp0 = floatx80_etox(fp0, status); + fp2 = packFloatx80(aSign, 0x7FFB, one_sig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, fp2, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } else { /* |X| < 16380 LOG2 */ + fp0 = floatx80_abs(a); /* Y = |X| */ + fp0 = floatx80_etoxm1(fp0, status); /* FP0 IS Z = EXPM1(Y) */ + fp1 = floatx80_add(fp0, float32_to_floatx80(make_float32(0x3F800000), + status), status); /* 1+Z */ + fp2 = fp0; + fp0 = floatx80_div(fp0, fp1, status); /* Z/(1+Z) */ + fp0 = floatx80_add(fp0, fp2, status); + + fact = packFloat32(aSign, 0x7E, 0); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, float32_to_floatx80(fact, status), status); + + float_raise(float_flag_inexact, status); + + return a; + } +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index 4cdb5a49ca..f033abf9ea 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -43,4 +43,5 @@ floatx80 floatx80_acos(floatx80 a, float_status *status); floatx80 floatx80_atanh(floatx80 a, float_status *status); floatx80 floatx80_etoxm1(floatx80 a, float_status *status); floatx80 floatx80_tanh(floatx80 a, float_status *status); +floatx80 floatx80_sinh(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 0caae904b5..7d83aaf91d 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5042,6 +5042,9 @@ DISAS_INSN(fpu) case 1: /* fint */ gen_helper_firound(cpu_env, cpu_dest, cpu_src); break; + case 2: /* fsinh */ + gen_helper_fsinh(cpu_env, cpu_dest, cpu_src); + break; case 3: /* fintrz */ gen_helper_fitrunc(cpu_env, cpu_dest, cpu_src); break; From 02f9124ebe26c36f0f7ed58085bd963e4372b2cd Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 12 Mar 2018 21:27:28 +0100 Subject: [PATCH 11/11] target/m68k: implement fcosh Using a local m68k floatx80_cosh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier Message-Id: <20180312202728.23790-12-laurent@vivier.eu> --- target/m68k/fpu_helper.c | 5 +++ target/m68k/helper.h | 1 + target/m68k/softfloat.c | 81 ++++++++++++++++++++++++++++++++++++++++ target/m68k/softfloat.h | 1 + target/m68k/translate.c | 3 ++ 5 files changed, 91 insertions(+) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 4c969dfe00..6eeffdf9bb 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -648,3 +648,8 @@ void HELPER(fsinh)(CPUM68KState *env, FPReg *res, FPReg *val) { res->d = floatx80_sinh(val->d, &env->fp_status); } + +void HELPER(fcosh)(CPUM68KState *env, FPReg *res, FPReg *val) +{ + res->d = floatx80_cosh(val->d, &env->fp_status); +} diff --git a/target/m68k/helper.h b/target/m68k/helper.h index acdca1af03..feee7be626 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -85,6 +85,7 @@ DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp) DEF_HELPER_3(ftanh, void, env, fp, fp) DEF_HELPER_3(fsinh, void, env, fp, fp) +DEF_HELPER_3(fcosh, 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 1528bfd147..dffb371c71 100644 --- a/target/m68k/softfloat.c +++ b/target/m68k/softfloat.c @@ -2822,3 +2822,84 @@ floatx80 floatx80_sinh(floatx80 a, float_status *status) return a; } } + +/*---------------------------------------------------------------------------- + | Hyperbolic cosine + *----------------------------------------------------------------------------*/ + +floatx80 floatx80_cosh(floatx80 a, float_status *status) +{ + int32_t aExp; + uint64_t aSig; + + int8_t user_rnd_mode, user_rnd_prec; + + int32_t compact; + floatx80 fp0, fp1; + + aSig = extractFloatx80Frac(a); + aExp = extractFloatx80Exp(a); + + if (aExp == 0x7FFF) { + if ((uint64_t) (aSig << 1)) { + return propagateFloatx80NaNOneArg(a, status); + } + return packFloatx80(0, floatx80_infinity.high, + floatx80_infinity.low); + } + + if (aExp == 0 && aSig == 0) { + return packFloatx80(0, one_exp, one_sig); + } + + 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); + + if (compact > 0x400CB167) { + if (compact > 0x400CB2B3) { + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + return roundAndPackFloatx80(status->floatx80_rounding_precision, 0, + 0x8000, one_sig, 0, status); + } else { + fp0 = packFloatx80(0, aExp, aSig); + fp0 = floatx80_sub(fp0, float64_to_floatx80( + make_float64(0x40C62D38D3D64634), status), + status); + fp0 = floatx80_sub(fp0, float64_to_floatx80( + make_float64(0x3D6F90AEB1E75CC7), status), + status); + fp0 = floatx80_etox(fp0, status); + fp1 = packFloatx80(0, 0x7FFB, one_sig); + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_mul(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; + } + } + + fp0 = packFloatx80(0, aExp, aSig); /* |X| */ + fp0 = floatx80_etox(fp0, status); /* EXP(|X|) */ + fp0 = floatx80_mul(fp0, float32_to_floatx80(make_float32(0x3F000000), + status), status); /* (1/2)*EXP(|X|) */ + fp1 = float32_to_floatx80(make_float32(0x3E800000), status); /* 1/4 */ + fp1 = floatx80_div(fp1, fp0, status); /* 1/(2*EXP(|X|)) */ + + status->float_rounding_mode = user_rnd_mode; + status->floatx80_rounding_precision = user_rnd_prec; + + a = floatx80_add(fp0, fp1, status); + + float_raise(float_flag_inexact, status); + + return a; +} diff --git a/target/m68k/softfloat.h b/target/m68k/softfloat.h index f033abf9ea..602661d5a8 100644 --- a/target/m68k/softfloat.h +++ b/target/m68k/softfloat.h @@ -44,4 +44,5 @@ floatx80 floatx80_atanh(floatx80 a, float_status *status); floatx80 floatx80_etoxm1(floatx80 a, float_status *status); floatx80 floatx80_tanh(floatx80 a, float_status *status); floatx80 floatx80_sinh(floatx80 a, float_status *status); +floatx80 floatx80_cosh(floatx80 a, float_status *status); #endif diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 7d83aaf91d..cef6f663ad 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5105,6 +5105,9 @@ DISAS_INSN(fpu) case 0x5c: /* fdabs */ gen_helper_fdabs(cpu_env, cpu_dest, cpu_src); break; + case 0x19: /* fcosh */ + gen_helper_fcosh(cpu_env, cpu_dest, cpu_src); + break; case 0x1a: /* fneg */ gen_helper_fneg(cpu_env, cpu_dest, cpu_src); break;