target/m68k: implement fsinh

Using a local m68k floatx80_sinh()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]

Backports commit eee6b892a6063c2807ecf33a2f62a8d7cca7652c from qemu
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Laurent Vivier 2018-03-15 16:26:04 -04:00 committed by Lioncash
parent b4660c5bd0
commit 1f57951ca6
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5 changed files with 99 additions and 0 deletions

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@ -654,3 +654,8 @@ void HELPER(ftanh)(CPUM68KState *env, FPReg *res, FPReg *val)
{ {
res->d = floatx80_tanh(val->d, &env->fp_status); 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);
}

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@ -86,6 +86,7 @@ DEF_HELPER_3(fasin, void, env, fp, fp)
DEF_HELPER_3(facos, void, env, fp, fp) DEF_HELPER_3(facos, void, env, fp, fp)
DEF_HELPER_3(fatanh, void, env, fp, fp) DEF_HELPER_3(fatanh, void, env, fp, fp)
DEF_HELPER_3(ftanh, 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(mac_move, void, env, i32, i32)
DEF_HELPER_3(macmulf, i64, env, i32, i32) DEF_HELPER_3(macmulf, i64, env, i32, i32)

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@ -2733,3 +2733,92 @@ floatx80 floatx80_tanh(floatx80 a, float_status *status)
return a; 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;
}
}

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@ -43,4 +43,5 @@ floatx80 floatx80_acos(floatx80 a, float_status *status);
floatx80 floatx80_atanh(floatx80 a, float_status *status); floatx80 floatx80_atanh(floatx80 a, float_status *status);
floatx80 floatx80_etoxm1(floatx80 a, float_status *status); floatx80 floatx80_etoxm1(floatx80 a, float_status *status);
floatx80 floatx80_tanh(floatx80 a, float_status *status); floatx80 floatx80_tanh(floatx80 a, float_status *status);
floatx80 floatx80_sinh(floatx80 a, float_status *status);
#endif #endif

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@ -5276,6 +5276,9 @@ DISAS_INSN(fpu)
case 1: /* fint */ case 1: /* fint */
gen_helper_firound(tcg_ctx, uc->cpu_env, cpu_dest, cpu_src); gen_helper_firound(tcg_ctx, uc->cpu_env, cpu_dest, cpu_src);
break; break;
case 2: /* fsinh */
gen_helper_fsinh(tcg_ctx, uc->cpu_env, cpu_dest, cpu_src);
break;
case 3: /* fintrz */ case 3: /* fintrz */
gen_helper_fitrunc(tcg_ctx, uc->cpu_env, cpu_dest, cpu_src); gen_helper_fitrunc(tcg_ctx, uc->cpu_env, cpu_dest, cpu_src);
break; break;