1 /* Target-dependent code for the i387.
3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GDB.
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.
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.
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/>. */
30 #define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
31 #define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
32 #define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
34 #define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
35 #define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
36 #define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
37 #define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
38 #define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
39 #define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
40 #define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
41 #define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
42 #define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
43 #define I387_MXCSR_REGNUM(tdep) \
44 (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
46 /* Print out the i387 floating point state. */
48 extern void i387_print_float_info (struct gdbarch
*gdbarch
,
50 struct frame_info
*frame
,
53 /* Return nonzero if a value of type TYPE stored in register REGNUM
54 needs any special handling. */
56 extern int i387_convert_register_p (struct gdbarch
*gdbarch
, int regnum
,
59 /* Read a value of type TYPE from register REGNUM in frame FRAME, and
60 return its contents in TO. */
62 extern void i387_register_to_value (struct frame_info
*frame
, int regnum
,
63 struct type
*type
, gdb_byte
*to
);
65 /* Write the contents FROM of a value of type TYPE into register
66 REGNUM in frame FRAME. */
68 extern void i387_value_to_register (struct frame_info
*frame
, int regnum
,
69 struct type
*type
, const gdb_byte
*from
);
72 /* Size of the memory area use by the 'fsave' and 'fxsave'
74 #define I387_SIZEOF_FSAVE 108
75 #define I387_SIZEOF_FXSAVE 512
77 /* Fill register REGNUM in REGCACHE with the appropriate value from
78 *FSAVE. This function masks off any of the reserved bits in
81 extern void i387_supply_fsave (struct regcache
*regcache
, int regnum
,
84 /* Fill register REGNUM (if it is a floating-point register) in *FSAVE
85 with the value from REGCACHE. If REGNUM is -1, do this for all
86 registers. This function doesn't touch any of the reserved bits in
89 extern void i387_collect_fsave (const struct regcache
*regcache
, int regnum
,
92 /* Fill register REGNUM in REGCACHE with the appropriate
93 floating-point or SSE register value from *FXSAVE. This function
94 masks off any of the reserved bits in *FXSAVE. */
96 extern void i387_supply_fxsave (struct regcache
*regcache
, int regnum
,
99 /* Fill register REGNUM (if it is a floating-point or SSE register) in
100 *FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for
101 all registers. This function doesn't touch any of the reserved
104 extern void i387_collect_fxsave (const struct regcache
*regcache
, int regnum
,
107 /* Prepare the FPU stack in REGCACHE for a function return. */
109 extern void i387_return_value (struct gdbarch
*gdbarch
,
110 struct regcache
*regcache
);
112 #endif /* i387-tdep.h */
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