[people/teissler/ipfire-2.x.git] / src / hwinfo / src / x86emu / include / x86emu / fpu_regs.h

/****************************************************************************
*
*						Realmode X86 Emulator Library
*
*            	Copyright (C) 1996-1999 SciTech Software, Inc.
* 				     Copyright (C) David Mosberger-Tang
* 					   Copyright (C) 1999 Egbert Eich
*
*  ========================================================================
*
*  Permission to use, copy, modify, distribute, and sell this software and
*  its documentation for any purpose is hereby granted without fee,
*  provided that the above copyright notice appear in all copies and that
*  both that copyright notice and this permission notice appear in
*  supporting documentation, and that the name of the authors not be used
*  in advertising or publicity pertaining to distribution of the software
*  without specific, written prior permission.  The authors makes no
*  representations about the suitability of this software for any purpose.
*  It is provided "as is" without express or implied warranty.
*
*  THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
*  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
*  EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
*  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
*  USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
*  OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
*  PERFORMANCE OF THIS SOFTWARE.
*
*  ========================================================================
*
* Language:		ANSI C
* Environment:	Any
* Developer:    Kendall Bennett
*
* Description:  Header file for FPU register definitions.
*
****************************************************************************/
/* $XFree86: xc/extras/x86emu/include/x86emu/fpu_regs.h,v 1.2 2003/10/22 20:03:05 tsi Exp $ */

#ifndef __X86EMU_FPU_REGS_H
#define __X86EMU_FPU_REGS_H

#ifdef X86_FPU_SUPPORT

#ifdef PACK
# pragma PACK
#endif

/* Basic 8087 register can hold any of the following values: */

union x86_fpu_reg_u {
    s8                  tenbytes[10];
    double              dval;
    float               fval;
    s16                 sval;
    s32                 lval;
	};

struct x86_fpu_reg {
	union x86_fpu_reg_u reg;
	char                tag;
	};

/*
 * Since we are not going to worry about the problems of aliasing
 * registers, every time a register is modified, its result type is
 * set in the tag fields for that register.  If some operation
 * attempts to access the type in a way inconsistent with its current
 * storage format, then we flag the operation.  If common, we'll
 * attempt the conversion.
 */

#define  X86_FPU_VALID          0x80
#define  X86_FPU_REGTYP(r)      ((r) & 0x7F)

#define  X86_FPU_WORD           0x0
#define  X86_FPU_SHORT          0x1
#define  X86_FPU_LONG           0x2
#define  X86_FPU_FLOAT          0x3
#define  X86_FPU_DOUBLE         0x4
#define  X86_FPU_LDBL           0x5
#define  X86_FPU_BSD            0x6

#define  X86_FPU_STKTOP  0

struct x86_fpu_registers {
    struct x86_fpu_reg  x86_fpu_stack[8];
    int                 x86_fpu_flags;
    int                 x86_fpu_config;         /* rounding modes, etc. */
    short               x86_fpu_tos, x86_fpu_bos;
	};

#ifdef END_PACK
# pragma END_PACK
#endif

/*
 * There are two versions of the following macro.
 *
 * One version is for opcode D9, for which there are more than 32
 * instructions encoded in the second byte of the opcode.
 *
 * The other version, deals with all the other 7 i87 opcodes, for
 * which there are only 32 strings needed to describe the
 * instructions.
 */

#endif /* X86_FPU_SUPPORT */

#ifdef DEBUG
# define DECODE_PRINTINSTR32(t,mod,rh,rl)     	\
	DECODE_PRINTF(t[(mod<<3)+(rh)]);
# define DECODE_PRINTINSTR256(t,mod,rh,rl)    	\
	DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]);
#else
# define DECODE_PRINTINSTR32(t,mod,rh,rl)
# define DECODE_PRINTINSTR256(t,mod,rh,rl)
#endif

#endif /* __X86EMU_FPU_REGS_H */
Commit	Line	Data
a6316ce4 MT	1	/****************************************************************************
	2	*
	3	* Realmode X86 Emulator Library
	4	*
	5	* Copyright (C) 1996-1999 SciTech Software, Inc.
	6	* Copyright (C) David Mosberger-Tang
	7	* Copyright (C) 1999 Egbert Eich
	8	*
	9	* ========================================================================
	10	*
	11	* Permission to use, copy, modify, distribute, and sell this software and
	12	* its documentation for any purpose is hereby granted without fee,
	13	* provided that the above copyright notice appear in all copies and that
	14	* both that copyright notice and this permission notice appear in
	15	* supporting documentation, and that the name of the authors not be used
	16	* in advertising or publicity pertaining to distribution of the software
	17	* without specific, written prior permission. The authors makes no
	18	* representations about the suitability of this software for any purpose.
	19	* It is provided "as is" without express or implied warranty.
	20	*
	21	* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	22	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
	23	* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	24	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
	25	* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
	26	* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
	27	* PERFORMANCE OF THIS SOFTWARE.
	28	*
	29	* ========================================================================
	30	*
	31	* Language: ANSI C
	32	* Environment: Any
	33	* Developer: Kendall Bennett
	34	*
	35	* Description: Header file for FPU register definitions.
	36	*
	37	****************************************************************************/
	38	/* $XFree86: xc/extras/x86emu/include/x86emu/fpu_regs.h,v 1.2 2003/10/22 20:03:05 tsi Exp $ */
	39
	40	#ifndef __X86EMU_FPU_REGS_H
	41	#define __X86EMU_FPU_REGS_H
	42
	43	#ifdef X86_FPU_SUPPORT
	44
	45	#ifdef PACK
	46	# pragma PACK
	47	#endif
	48
	49	/* Basic 8087 register can hold any of the following values: */
	50
	51	union x86_fpu_reg_u {
	52	s8 tenbytes[10];
	53	double dval;
	54	float fval;
	55	s16 sval;
	56	s32 lval;
	57	};
	58
	59	struct x86_fpu_reg {
	60	union x86_fpu_reg_u reg;
	61	char tag;
	62	};
	63
	64	/*
65	* Since we are not going to worry about the problems of aliasing
66	* registers, every time a register is modified, its result type is
67	* set in the tag fields for that register. If some operation
68	* attempts to access the type in a way inconsistent with its current
69	* storage format, then we flag the operation. If common, we'll
70	* attempt the conversion.
71	*/
72
73	#define X86_FPU_VALID 0x80
74	#define X86_FPU_REGTYP(r) ((r) & 0x7F)
75
76	#define X86_FPU_WORD 0x0
77	#define X86_FPU_SHORT 0x1
78	#define X86_FPU_LONG 0x2
79	#define X86_FPU_FLOAT 0x3
80	#define X86_FPU_DOUBLE 0x4
81	#define X86_FPU_LDBL 0x5
82	#define X86_FPU_BSD 0x6
83
84	#define X86_FPU_STKTOP 0
85
86	struct x86_fpu_registers {
87	struct x86_fpu_reg x86_fpu_stack[8];
88	int x86_fpu_flags;
89	int x86_fpu_config; /* rounding modes, etc. */
90	short x86_fpu_tos, x86_fpu_bos;
91	};
92
93	#ifdef END_PACK
94	# pragma END_PACK
95	#endif
96
97	/*
98	* There are two versions of the following macro.
99	*
100	* One version is for opcode D9, for which there are more than 32
101	* instructions encoded in the second byte of the opcode.
102	*
103	* The other version, deals with all the other 7 i87 opcodes, for
104	* which there are only 32 strings needed to describe the
105	* instructions.
106	*/
107
108	#endif /* X86_FPU_SUPPORT */
109
110	#ifdef DEBUG
111	# define DECODE_PRINTINSTR32(t,mod,rh,rl) \
112	DECODE_PRINTF(t[(mod<<3)+(rh)]);
113	# define DECODE_PRINTINSTR256(t,mod,rh,rl) \
114	DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]);
115	#else
116	# define DECODE_PRINTINSTR32(t,mod,rh,rl)
117	# define DECODE_PRINTINSTR256(t,mod,rh,rl)
118	#endif
119
120	#endif /* __X86EMU_FPU_REGS_H */