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e750d25e | 1 | /* Target-dependent code for the i387. |
2de139ba MK |
2 | |
3 | Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc. | |
b2450fc5 MK |
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 2 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, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
e750d25e JT |
22 | #ifndef I387_TDEP_H |
23 | #define I387_TDEP_H | |
b2450fc5 | 24 | |
da3331ec AC |
25 | struct gdbarch; |
26 | struct ui_file; | |
27 | struct frame_info; | |
d532c08f | 28 | struct type; |
da3331ec | 29 | |
5716833c MK |
30 | /* Because the number of general-purpose registers is different for |
31 | AMD64, the floating-point registers and SSE registers get shifted. | |
32 | The following definitions are intended to help writing code that | |
33 | needs the register numbers of floating-point registers and SSE | |
34 | registers. In order to use these, one should provide a definition | |
35 | for I387_ST0_REGNUM, and possibly I387_NUM_XMM_REGS, preferably by | |
36 | using a local "#define" in the body of the function that uses this. | |
37 | Please "#undef" them before the end of the function. */ | |
38 | ||
39 | #define I387_FCTRL_REGNUM (I387_ST0_REGNUM + 8) | |
40 | #define I387_FSTAT_REGNUM (I387_FCTRL_REGNUM + 1) | |
41 | #define I387_FTAG_REGNUM (I387_FCTRL_REGNUM + 2) | |
42 | #define I387_FISEG_REGNUM (I387_FCTRL_REGNUM + 3) | |
43 | #define I387_FIOFF_REGNUM (I387_FCTRL_REGNUM + 4) | |
44 | #define I387_FOSEG_REGNUM (I387_FCTRL_REGNUM + 5) | |
45 | #define I387_FOOFF_REGNUM (I387_FCTRL_REGNUM + 6) | |
46 | #define I387_FOP_REGNUM (I387_FCTRL_REGNUM + 7) | |
47 | #define I387_XMM0_REGNUM (I387_ST0_REGNUM + 16) | |
48 | #define I387_MXCSR_REGNUM (I387_XMM0_REGNUM + I387_NUM_XMM_REGS) | |
49 | \f | |
50 | ||
61113f8b MK |
51 | /* Print out the i387 floating point state. */ |
52 | ||
53 | extern void i387_print_float_info (struct gdbarch *gdbarch, | |
54 | struct ui_file *file, | |
8e186fd6 AC |
55 | struct frame_info *frame, |
56 | const char *args); | |
61113f8b | 57 | |
d532c08f MK |
58 | /* Read a value of type TYPE from register REGNUM in frame FRAME, and |
59 | return its contents in TO. */ | |
60 | ||
61 | extern void i387_register_to_value (struct frame_info *frame, int regnum, | |
62 | struct type *type, void *to); | |
63 | ||
64 | /* Write the contents FROM of a value of type TYPE into register | |
65 | REGNUM in frame FRAME. */ | |
66 | ||
67 | extern void i387_value_to_register (struct frame_info *frame, int regnum, | |
68 | struct type *type, const void *from); | |
2de139ba MK |
69 | \f |
70 | ||
71 | /* Size of the memory area use by the 'fsave' and 'fxsave' | |
72 | instructions. */ | |
73 | #define I387_SIZEOF_FSAVE 108 | |
74 | #define I387_SIZEOF_FXSAVE 512 | |
d532c08f | 75 | |
ed504bdf | 76 | /* Fill register REGNUM in GDB's register cache with the appropriate |
f31e928c MK |
77 | value from *FSAVE. This function masks off any of the reserved |
78 | bits in *FSAVE. */ | |
79 | ||
5716833c | 80 | extern void i387_supply_fsave (const void *fsave, int regnum); |
b2450fc5 | 81 | |
f31e928c | 82 | /* Fill register REGNUM (if it is a floating-point register) in *FSAVE |
ed504bdf | 83 | with the value in GDB's register cache. If REGNUM is -1, do this |
b2450fc5 MK |
84 | for all registers. This function doesn't touch any of the reserved |
85 | bits in *FSAVE. */ | |
86 | ||
5716833c | 87 | extern void i387_fill_fsave (void *fsave, int regnum); |
e2890f08 | 88 | |
ed504bdf MK |
89 | /* Fill register REGNUM in GDB's register cache with the appropriate |
90 | floating-point or SSE register value from *FXSAVE. This function | |
91 | masks off any of the reserved bits in *FXSAVE. */ | |
e2890f08 | 92 | |
5716833c | 93 | extern void i387_supply_fxsave (const void *fxsave, int regnum); |
e2890f08 | 94 | |
f31e928c | 95 | /* Fill register REGNUM (if it is a floating-point or SSE register) in |
ed504bdf | 96 | *FXSAVE with the value in GDB's register cache. If REGNUM is -1, do |
e2890f08 MK |
97 | this for all registers. This function doesn't touch any of the |
98 | reserved bits in *FXSAVE. */ | |
99 | ||
5716833c | 100 | extern void i387_fill_fxsave (void *fxsave, int regnum); |
b2450fc5 | 101 | |
e750d25e | 102 | #endif /* i387-tdep.h */ |