diff options
| -rw-r--r-- | target/m68k/fpu_helper.c | 5 | ||||
| -rw-r--r-- | target/m68k/helper.h | 1 | ||||
| -rw-r--r-- | target/m68k/softfloat.c | 81 | ||||
| -rw-r--r-- | target/m68k/softfloat.h | 1 | ||||
| -rw-r--r-- | target/m68k/translate.c | 3 |
5 files changed, 91 insertions, 0 deletions
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; |