[deliverable/binutils-gdb.git] / gdb / i387-tdep.h

/* Target-dependent code for the i387.

   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
   Free Software Foundation, Inc.

   This file is part of GDB.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#ifndef I387_TDEP_H
#define I387_TDEP_H

struct gdbarch;
struct frame_info;
struct regcache;
struct type;
struct ui_file;

/* Number of i387 floating point registers.  */
#define I387_NUM_REGS	16

#define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
#define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
#define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
#define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
#define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)

#define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
#define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
#define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
#define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
#define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
#define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
#define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
#define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
#define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
#define I387_MXCSR_REGNUM(tdep) \
  (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
#define I387_YMMENDH_REGNUM(tdep) \
  (I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))

/* Print out the i387 floating point state.  */

extern void i387_print_float_info (struct gdbarch *gdbarch,
				   struct ui_file *file,
				   struct frame_info *frame,
				   const char *args);

/* Return nonzero if a value of type TYPE stored in register REGNUM
   needs any special handling.  */

extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum,
				    struct type *type);

/* Read a value of type TYPE from register REGNUM in frame FRAME, and
   return its contents in TO.  */

extern void i387_register_to_value (struct frame_info *frame, int regnum,
				    struct type *type, gdb_byte *to);

/* Write the contents FROM of a value of type TYPE into register
   REGNUM in frame FRAME.  */

extern void i387_value_to_register (struct frame_info *frame, int regnum,
				    struct type *type, const gdb_byte *from);
\f

/* Size of the memory area use by the 'fsave' and 'fxsave'
   instructions.  */
#define I387_SIZEOF_FSAVE	108
#define I387_SIZEOF_FXSAVE	512

/* Fill register REGNUM in REGCACHE with the appropriate value from
   *FSAVE.  This function masks off any of the reserved bits in
   *FSAVE.  */

extern void i387_supply_fsave (struct regcache *regcache, int regnum,
			       const void *fsave);

/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
   with the value from REGCACHE.  If REGNUM is -1, do this for all
   registers.  This function doesn't touch any of the reserved bits in
   *FSAVE.  */

extern void i387_collect_fsave (const struct regcache *regcache, int regnum,
				void *fsave);

/* Fill register REGNUM in REGCACHE with the appropriate
   floating-point or SSE register value from *FXSAVE.  This function
   masks off any of the reserved bits in *FXSAVE.  */

extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
				const void *fxsave);

/* Similar to i387_supply_fxsave, but use XSAVE extended state.  */

extern void i387_supply_xsave (struct regcache *regcache, int regnum,
			       const void *xsave);

/* Fill register REGNUM (if it is a floating-point or SSE register) in
   *FXSAVE with the value from REGCACHE.  If REGNUM is -1, do this for
   all registers.  This function doesn't touch any of the reserved
   bits in *FXSAVE.  */

extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
				 void *fxsave);

/* Similar to i387_collect_fxsave, but use XSAVE extended state.  */

extern void i387_collect_xsave (const struct regcache *regcache,
				int regnum, void *xsave, int gcore);

/* Prepare the FPU stack in REGCACHE for a function return.  */

extern void i387_return_value (struct gdbarch *gdbarch,
			       struct regcache *regcache);

#endif /* i387-tdep.h */
Commit	Line	Data
	1	/* Target-dependent code for the i387.
	2
	3	Copyright (C) 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
	4	Free Software Foundation, Inc.
	5
	6	This file is part of GDB.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	20
	21	#ifndef I387_TDEP_H
	22	#define I387_TDEP_H
	23
	24	struct gdbarch;
	25	struct frame_info;
	26	struct regcache;
	27	struct type;
	28	struct ui_file;
	29
	30	/* Number of i387 floating point registers. */
	31	#define I387_NUM_REGS 16
	32
	33	#define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
	34	#define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
	35	#define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
	36	#define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
	37	#define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)
	38
	39	#define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
	40	#define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
	41	#define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
	42	#define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
	43	#define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
	44	#define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
	45	#define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
	46	#define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
	47	#define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
	48	#define I387_MXCSR_REGNUM(tdep) \
	49	(I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
	50	#define I387_YMMENDH_REGNUM(tdep) \
	51	(I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))
	52
	53	/* Print out the i387 floating point state. */
	54
	55	extern void i387_print_float_info (struct gdbarch *gdbarch,
	56	struct ui_file *file,
	57	struct frame_info *frame,
	58	const char *args);
	59
	60	/* Return nonzero if a value of type TYPE stored in register REGNUM
	61	needs any special handling. */
	62
	63	extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum,
	64	struct type *type);
	65
	66	/* Read a value of type TYPE from register REGNUM in frame FRAME, and
	67	return its contents in TO. */
	68
	69	extern void i387_register_to_value (struct frame_info *frame, int regnum,
	70	struct type type, gdb_byte to);
	71
	72	/* Write the contents FROM of a value of type TYPE into register
	73	REGNUM in frame FRAME. */
	74
	75	extern void i387_value_to_register (struct frame_info *frame, int regnum,
	76	struct type type, const gdb_byte from);
	77	\f
	78
	79	/* Size of the memory area use by the 'fsave' and 'fxsave'
	80	instructions. */
	81	#define I387_SIZEOF_FSAVE 108
	82	#define I387_SIZEOF_FXSAVE 512
	83
	84	/* Fill register REGNUM in REGCACHE with the appropriate value from
	85	*FSAVE. This function masks off any of the reserved bits in
	86	FSAVE. /
	87
	88	extern void i387_supply_fsave (struct regcache *regcache, int regnum,
	89	const void *fsave);
	90
	91	/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
	92	with the value from REGCACHE. If REGNUM is -1, do this for all
	93	registers. This function doesn't touch any of the reserved bits in
	94	FSAVE. /
	95
	96	extern void i387_collect_fsave (const struct regcache *regcache, int regnum,
	97	void *fsave);
	98
	99	/* Fill register REGNUM in REGCACHE with the appropriate
	100	floating-point or SSE register value from *FXSAVE. This function
	101	masks off any of the reserved bits in FXSAVE. /
	102
	103	extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
	104	const void *fxsave);
	105
	106	/* Similar to i387_supply_fxsave, but use XSAVE extended state. */
	107
	108	extern void i387_supply_xsave (struct regcache *regcache, int regnum,
	109	const void *xsave);
	110
	111	/* Fill register REGNUM (if it is a floating-point or SSE register) in
	112	*FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for
	113	all registers. This function doesn't touch any of the reserved
	114	bits in FXSAVE. /
	115
	116	extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
	117	void *fxsave);
	118
	119	/* Similar to i387_collect_fxsave, but use XSAVE extended state. */
	120
	121	extern void i387_collect_xsave (const struct regcache *regcache,
	122	int regnum, void *xsave, int gcore);
	123
	124	/* Prepare the FPU stack in REGCACHE for a function return. */
	125
	126	extern void i387_return_value (struct gdbarch *gdbarch,
	127	struct regcache *regcache);
	128
	129	#endif /* i387-tdep.h */