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e750d25e | 1 | /* Target-dependent code for the i387. |
2de139ba | 2 | |
4c38e0a4 | 3 | Copyright (C) 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 |
6aba47ca | 4 | Free Software Foundation, Inc. |
b2450fc5 MK |
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
b2450fc5 MK |
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 | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b2450fc5 | 20 | |
e750d25e JT |
21 | #ifndef I387_TDEP_H |
22 | #define I387_TDEP_H | |
b2450fc5 | 23 | |
da3331ec | 24 | struct gdbarch; |
da3331ec | 25 | struct frame_info; |
41d041d6 | 26 | struct regcache; |
d532c08f | 27 | struct type; |
41d041d6 | 28 | struct ui_file; |
da3331ec | 29 | |
90884b2b L |
30 | /* Number of i387 floating point registers. */ |
31 | #define I387_NUM_REGS 16 | |
32 | ||
20a6ec49 MD |
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 | ||
37 | #define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8) | |
38 | #define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1) | |
39 | #define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2) | |
40 | #define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3) | |
41 | #define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4) | |
42 | #define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5) | |
43 | #define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6) | |
44 | #define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7) | |
45 | #define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16) | |
46 | #define I387_MXCSR_REGNUM(tdep) \ | |
47 | (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep)) | |
5716833c | 48 | |
61113f8b MK |
49 | /* Print out the i387 floating point state. */ |
50 | ||
51 | extern void i387_print_float_info (struct gdbarch *gdbarch, | |
52 | struct ui_file *file, | |
8e186fd6 AC |
53 | struct frame_info *frame, |
54 | const char *args); | |
61113f8b | 55 | |
83acabca DJ |
56 | /* Return nonzero if a value of type TYPE stored in register REGNUM |
57 | needs any special handling. */ | |
58 | ||
0abe36f5 MD |
59 | extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum, |
60 | struct type *type); | |
83acabca | 61 | |
d532c08f MK |
62 | /* Read a value of type TYPE from register REGNUM in frame FRAME, and |
63 | return its contents in TO. */ | |
64 | ||
65 | extern void i387_register_to_value (struct frame_info *frame, int regnum, | |
42835c2b | 66 | struct type *type, gdb_byte *to); |
d532c08f MK |
67 | |
68 | /* Write the contents FROM of a value of type TYPE into register | |
69 | REGNUM in frame FRAME. */ | |
70 | ||
71 | extern void i387_value_to_register (struct frame_info *frame, int regnum, | |
42835c2b | 72 | struct type *type, const gdb_byte *from); |
2de139ba MK |
73 | \f |
74 | ||
75 | /* Size of the memory area use by the 'fsave' and 'fxsave' | |
76 | instructions. */ | |
77 | #define I387_SIZEOF_FSAVE 108 | |
78 | #define I387_SIZEOF_FXSAVE 512 | |
d532c08f | 79 | |
41d041d6 MK |
80 | /* Fill register REGNUM in REGCACHE with the appropriate value from |
81 | *FSAVE. This function masks off any of the reserved bits in | |
82 | *FSAVE. */ | |
f31e928c | 83 | |
41d041d6 MK |
84 | extern void i387_supply_fsave (struct regcache *regcache, int regnum, |
85 | const void *fsave); | |
b2450fc5 | 86 | |
63b6c53f MK |
87 | /* Fill register REGNUM (if it is a floating-point register) in *FSAVE |
88 | with the value from REGCACHE. If REGNUM is -1, do this for all | |
89 | registers. This function doesn't touch any of the reserved bits in | |
90 | *FSAVE. */ | |
91 | ||
92 | extern void i387_collect_fsave (const struct regcache *regcache, int regnum, | |
93 | void *fsave); | |
94 | ||
41d041d6 | 95 | /* Fill register REGNUM in REGCACHE with the appropriate |
ed504bdf MK |
96 | floating-point or SSE register value from *FXSAVE. This function |
97 | masks off any of the reserved bits in *FXSAVE. */ | |
e2890f08 | 98 | |
41d041d6 MK |
99 | extern void i387_supply_fxsave (struct regcache *regcache, int regnum, |
100 | const void *fxsave); | |
e2890f08 | 101 | |
80571bff MK |
102 | /* Fill register REGNUM (if it is a floating-point or SSE register) in |
103 | *FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for | |
104 | all registers. This function doesn't touch any of the reserved | |
105 | bits in *FXSAVE. */ | |
106 | ||
107 | extern void i387_collect_fxsave (const struct regcache *regcache, int regnum, | |
108 | void *fxsave); | |
109 | ||
efb1c01c MK |
110 | /* Prepare the FPU stack in REGCACHE for a function return. */ |
111 | ||
112 | extern void i387_return_value (struct gdbarch *gdbarch, | |
113 | struct regcache *regcache); | |
114 | ||
e750d25e | 115 | #endif /* i387-tdep.h */ |