mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-06-11 13:29:30 +00:00
136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/*
|
|
* types.h - basic types for fpu registers
|
|
*
|
|
* Basilisk II (C) 1997-2008 Christian Bauer
|
|
*
|
|
* MC68881/68040 fpu emulation
|
|
*
|
|
* Original UAE FPU, copyright 1996 Herman ten Brugge
|
|
* Rewrite for x86, copyright 1999-2000 Lauri Pesonen
|
|
* New framework, copyright 2000 Gwenole Beauchesne
|
|
* Adapted for JIT compilation (c) Bernd Meyer, 2000
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef FPU_TYPES_H
|
|
#define FPU_TYPES_H
|
|
|
|
#include "sysdeps.h"
|
|
|
|
/* Default behavior is *not* to use long doubles */
|
|
#undef USE_LONG_DOUBLE
|
|
#undef USE_QUAD_DOUBLE
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* --- Original UAE fpu core --- */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#if defined(FPU_UAE)
|
|
|
|
/* 4-byte floats */
|
|
typedef float uae_f32;
|
|
|
|
/* 8-byte floats */
|
|
typedef double uae_f64;
|
|
|
|
/* Original UAE FPU registers are only 8 bytes long */
|
|
typedef uae_f64 fpu_register;
|
|
typedef fpu_register fpu_extended;
|
|
typedef uae_f64 fpu_double;
|
|
typedef uae_f32 fpu_single;
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* --- Optimized core for x86 --- */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#elif defined(FPU_X86)
|
|
|
|
/* 4-byte floats */
|
|
typedef float uae_f32;
|
|
|
|
/* 8-byte floats */
|
|
typedef double uae_f64;
|
|
|
|
/* At least 10-byte floats are required */
|
|
#if SIZEOF_LONG_DOUBLE >= 10
|
|
typedef long double fpu_register;
|
|
#else
|
|
#error "No float type at least 10 bytes long, you lose."
|
|
#endif
|
|
|
|
/* X86 FPU has a custom register type that maps to a native X86 register */
|
|
typedef fpu_register fpu_extended;
|
|
typedef uae_f64 fpu_double;
|
|
typedef uae_f32 fpu_single;
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
/* --- C99 implementation --- */
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#elif defined(FPU_IEEE)
|
|
|
|
#if HOST_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
|
|
#error "No IEEE float format, you lose."
|
|
#endif
|
|
|
|
/* 4-byte floats */
|
|
#if SIZEOF_FLOAT == 4
|
|
typedef float uae_f32;
|
|
#elif SIZEOF_DOUBLE == 4
|
|
typedef double uae_f32;
|
|
#else
|
|
#error "No 4 byte float type, you lose."
|
|
#endif
|
|
|
|
/* 8-byte floats */
|
|
#if SIZEOF_DOUBLE == 8
|
|
typedef double uae_f64;
|
|
#elif SIZEOF_LONG_DOUBLE == 8
|
|
typedef long double uae_f64;
|
|
#else
|
|
#error "No 8 byte float type, you lose."
|
|
#endif
|
|
|
|
/* 12-byte or 16-byte floats */
|
|
#if SIZEOF_LONG_DOUBLE == 12
|
|
typedef long double uae_f96;
|
|
typedef uae_f96 fpu_register;
|
|
#define USE_LONG_DOUBLE 1
|
|
#elif SIZEOF_LONG_DOUBLE == 16 && (defined(__i386__) || defined(__x86_64__))
|
|
/* Long doubles on x86-64 are really held in old x87 FPU stack. */
|
|
typedef long double uae_f128;
|
|
typedef uae_f128 fpu_register;
|
|
#define USE_LONG_DOUBLE 1
|
|
#elif 0
|
|
/* Disable for now and probably for good as (i) the emulator
|
|
implementation is not correct, (ii) I don't know of any CPU which
|
|
handles this kind of format *natively* with conformance to IEEE. */
|
|
typedef long double uae_f128;
|
|
typedef uae_f128 fpu_register;
|
|
#define USE_QUAD_DOUBLE 1
|
|
#else
|
|
typedef uae_f64 fpu_register;
|
|
#endif
|
|
|
|
/* We need all those floating-point types */
|
|
typedef fpu_register fpu_extended;
|
|
typedef uae_f64 fpu_double;
|
|
typedef uae_f32 fpu_single;
|
|
|
|
#endif
|
|
|
|
#endif /* FPU_TYPES_H */
|