Upgrade GDB from 7.4.1 to 7.6.1 on the vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / i387-tdep.h
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1/* Target-dependent code for the i387.
2
ef5ccd6c 3 Copyright (C) 2000-2013 Free Software Foundation, Inc.
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4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20#ifndef I387_TDEP_H
21#define I387_TDEP_H
22
23struct gdbarch;
24struct frame_info;
25struct regcache;
26struct type;
27struct ui_file;
28
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29/* Number of i387 floating point registers. */
30#define I387_NUM_REGS 16
31
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32#define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
33#define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
34#define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
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35#define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
36#define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)
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37
38#define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
39#define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
40#define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
41#define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
42#define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
43#define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
44#define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
45#define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
46#define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
47#define I387_MXCSR_REGNUM(tdep) \
48 (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
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49#define I387_YMMENDH_REGNUM(tdep) \
50 (I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))
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51
52/* Print out the i387 floating point state. */
53
54extern void i387_print_float_info (struct gdbarch *gdbarch,
55 struct ui_file *file,
56 struct frame_info *frame,
57 const char *args);
58
59/* Return nonzero if a value of type TYPE stored in register REGNUM
60 needs any special handling. */
61
62extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum,
63 struct type *type);
64
65/* Read a value of type TYPE from register REGNUM in frame FRAME, and
66 return its contents in TO. */
67
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68extern int i387_register_to_value (struct frame_info *frame, int regnum,
69 struct type *type, gdb_byte *to,
70 int *optimizedp, int *unavailablep);
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71
72/* Write the contents FROM of a value of type TYPE into register
73 REGNUM in frame FRAME. */
74
75extern 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
88extern 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
96extern 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
103extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
104 const void *fxsave);
105
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106/* Similar to i387_supply_fxsave, but use XSAVE extended state. */
107
108extern void i387_supply_xsave (struct regcache *regcache, int regnum,
109 const void *xsave);
110
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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
116extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
117 void *fxsave);
118
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119/* Similar to i387_collect_fxsave, but use XSAVE extended state. */
120
121extern void i387_collect_xsave (const struct regcache *regcache,
122 int regnum, void *xsave, int gcore);
123
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124/* Prepare the FPU stack in REGCACHE for a function return. */
125
126extern void i387_return_value (struct gdbarch *gdbarch,
127 struct regcache *regcache);
128
129#endif /* i387-tdep.h */