1 /* Target-dependent code for the i387.
3 Copyright (C) 2000-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
29 /* Number of i387 floating point registers. */
30 #define I387_NUM_REGS 16
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)
35 #define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
36 #define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)
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))
49 #define I387_YMMENDH_REGNUM(tdep) \
50 (I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))
52 /* Print out the i387 floating point state. */
54 extern void i387_print_float_info (struct gdbarch
*gdbarch
,
56 struct frame_info
*frame
,
59 /* Return nonzero if a value of type TYPE stored in register REGNUM
60 needs any special handling. */
62 extern int i387_convert_register_p (struct gdbarch
*gdbarch
, int regnum
,
65 /* Read a value of type TYPE from register REGNUM in frame FRAME, and
66 return its contents in TO. */
68 extern int i387_register_to_value (struct frame_info
*frame
, int regnum
,
69 struct type
*type
, gdb_byte
*to
,
70 int *optimizedp
, int *unavailablep
);
72 /* Write the contents FROM of a value of type TYPE into register
73 REGNUM in frame FRAME. */
75 extern void i387_value_to_register (struct frame_info
*frame
, int regnum
,
76 struct type
*type
, const gdb_byte
*from
);
79 /* Size of the memory area use by the 'fsave' and 'fxsave'
81 #define I387_SIZEOF_FSAVE 108
82 #define I387_SIZEOF_FXSAVE 512
84 /* Fill register REGNUM in REGCACHE with the appropriate value from
85 *FSAVE. This function masks off any of the reserved bits in
88 extern void i387_supply_fsave (struct regcache
*regcache
, int regnum
,
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
96 extern void i387_collect_fsave (const struct regcache
*regcache
, int regnum
,
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. */
103 extern void i387_supply_fxsave (struct regcache
*regcache
, int regnum
,
106 /* Similar to i387_supply_fxsave, but use XSAVE extended state. */
108 extern void i387_supply_xsave (struct regcache
*regcache
, int regnum
,
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
116 extern void i387_collect_fxsave (const struct regcache
*regcache
, int regnum
,
119 /* Similar to i387_collect_fxsave, but use XSAVE extended state. */
121 extern void i387_collect_xsave (const struct regcache
*regcache
,
122 int regnum
, void *xsave
, int gcore
);
124 /* Prepare the FPU stack in REGCACHE for a function return. */
126 extern void i387_return_value (struct gdbarch
*gdbarch
,
127 struct regcache
*regcache
);
129 #endif /* i387-tdep.h */
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