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/tmp/gdb-7.10/gdb/i387-tdep.h
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1 /* Target-dependent code for the i387.
2 
3  Copyright (C) 2000-2015 Free Software Foundation, Inc.
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 
23 struct gdbarch;
24 struct frame_info;
25 struct regcache;
26 struct type;
27 struct ui_file;
28 
29 /* Number of i387 floating point registers. */
30 #define I387_NUM_REGS 16
31 
32 #define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
33 #define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
34 #define I387_NUM_XMM_AVX512_REGS(tdep) ((tdep)->num_xmm_avx512_regs)
35 #define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
36 #define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
37 #define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)
38 
39 #define I387_BND0R_REGNUM(tdep) ((tdep)->bnd0r_regnum)
40 #define I387_BNDCFGU_REGNUM(tdep) ((tdep)->bndcfgu_regnum)
41 
42 /* Set of constants used for 32 and 64-bit. */
43 #define I387_NUM_MPX_REGS 6
44 #define I387_NUM_BND_REGS 4
45 #define I387_NUM_MPX_CTRL_REGS 2
46 #define I387_NUM_K_REGS 8
47 
48 #define I387_K0_REGNUM(tdep) ((tdep)->k0_regnum)
49 #define I387_NUM_ZMMH_REGS(tdep) ((tdep)->num_zmm_regs)
50 #define I387_ZMM0H_REGNUM(tdep) ((tdep)->zmm0h_regnum)
51 #define I387_NUM_YMM_AVX512_REGS(tdep) ((tdep)->num_ymm_avx512_regs)
52 #define I387_YMM16H_REGNUM(tdep) ((tdep)->ymm16h_regnum)
53 
54 #define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
55 #define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
56 #define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
57 #define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
58 #define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
59 #define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
60 #define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
61 #define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
62 #define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
63 #define I387_XMM16_REGNUM(tdep) ((tdep)->xmm16_regnum)
64 #define I387_MXCSR_REGNUM(tdep) \
65  (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
66 #define I387_YMM0_REGNUM(tdep) (I387_MXCSR_REGNUM(tdep) + 1)
67 #define I387_YMMENDH_REGNUM(tdep) \
68  (I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))
69 
70 #define I387_MPXEND_REGNUM(tdep) \
71  (I387_BND0R_REGNUM (tdep) + I387_NUM_MPX_REGS)
72 
73 #define I387_KEND_REGNUM(tdep) \
74  (I387_K0_REGNUM (tdep) + I387_NUM_K_REGS)
75 #define I387_ZMMENDH_REGNUM(tdep) \
76  (I387_ZMM0H_REGNUM (tdep) + I387_NUM_ZMMH_REGS (tdep))
77 #define I387_YMMH_AVX512_END_REGNUM(tdep) \
78  (I387_YMM16H_REGNUM (tdep) + I387_NUM_YMM_AVX512_REGS (tdep))
79 #define I387_XMM_AVX512_END_REGNUM(tdep) \
80  (I387_XMM16_REGNUM (tdep) + I387_NUM_XMM_AVX512_REGS (tdep))
81 
82 /* Print out the i387 floating point state. */
83 
84 extern void i387_print_float_info (struct gdbarch *gdbarch,
85  struct ui_file *file,
86  struct frame_info *frame,
87  const char *args);
88 
89 /* Return nonzero if a value of type TYPE stored in register REGNUM
90  needs any special handling. */
91 
92 extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum,
93  struct type *type);
94 
95 /* Read a value of type TYPE from register REGNUM in frame FRAME, and
96  return its contents in TO. */
97 
98 extern int i387_register_to_value (struct frame_info *frame, int regnum,
99  struct type *type, gdb_byte *to,
100  int *optimizedp, int *unavailablep);
101 
102 /* Write the contents FROM of a value of type TYPE into register
103  REGNUM in frame FRAME. */
104 
105 extern void i387_value_to_register (struct frame_info *frame, int regnum,
106  struct type *type, const gdb_byte *from);
107 
108 
109 /* Size of the memory area use by the 'fsave' and 'fxsave'
110  instructions. */
111 #define I387_SIZEOF_FSAVE 108
112 #define I387_SIZEOF_FXSAVE 512
113 
114 /* Fill register REGNUM in REGCACHE with the appropriate value from
115  *FSAVE. This function masks off any of the reserved bits in
116  *FSAVE. */
117 
118 extern void i387_supply_fsave (struct regcache *regcache, int regnum,
119  const void *fsave);
120 
121 /* Fill register REGNUM (if it is a floating-point register) in *FSAVE
122  with the value from REGCACHE. If REGNUM is -1, do this for all
123  registers. This function doesn't touch any of the reserved bits in
124  *FSAVE. */
125 
126 extern void i387_collect_fsave (const struct regcache *regcache, int regnum,
127  void *fsave);
128 
129 /* Fill register REGNUM in REGCACHE with the appropriate
130  floating-point or SSE register value from *FXSAVE. This function
131  masks off any of the reserved bits in *FXSAVE. */
132 
133 extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
134  const void *fxsave);
135 
136 /* Similar to i387_supply_fxsave, but use XSAVE extended state. */
137 
138 extern void i387_supply_xsave (struct regcache *regcache, int regnum,
139  const void *xsave);
140 
141 /* Fill register REGNUM (if it is a floating-point or SSE register) in
142  *FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for
143  all registers. This function doesn't touch any of the reserved
144  bits in *FXSAVE. */
145 
146 extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
147  void *fxsave);
148 
149 /* Similar to i387_collect_fxsave, but use XSAVE extended state. */
150 
151 extern void i387_collect_xsave (const struct regcache *regcache,
152  int regnum, void *xsave, int gcore);
153 
154 /* Prepare the FPU stack in REGCACHE for a function return. */
155 
156 extern void i387_return_value (struct gdbarch *gdbarch,
157  struct regcache *regcache);
158 
159 #endif /* i387-tdep.h */
void i387_supply_fxsave(struct regcache *regcache, int regnum, const void *fxsave)
Definition: i387-tdep.c:595
int i387_convert_register_p(struct gdbarch *gdbarch, int regnum, struct type *type)
Definition: i387-tdep.c:338
void i387_value_to_register(struct frame_info *frame, int regnum, struct type *type, const gdb_byte *from)
Definition: i387-tdep.c:390
void i387_print_float_info(struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args)
Definition: i387-tdep.c:215
int * from
Definition: varobj.h:282
Definition: gdbtypes.h:749
int regnum
Definition: aarch64-tdep.c:69
void i387_return_value(struct gdbarch *gdbarch, struct regcache *regcache)
Definition: i387-tdep.c:1756
void i387_collect_fxsave(const struct regcache *regcache, int regnum, void *fxsave)
Definition: i387-tdep.c:678
bfd_byte gdb_byte
Definition: common-types.h:38
void i387_collect_xsave(const struct regcache *regcache, int regnum, void *xsave, int gcore)
Definition: i387-tdep.c:1267
void i387_collect_fsave(const struct regcache *regcache, int regnum, void *fsave)
Definition: i387-tdep.c:502
void i387_supply_fsave(struct regcache *regcache, int regnum, const void *fsave)
Definition: i387-tdep.c:447
int i387_register_to_value(struct frame_info *frame, int regnum, struct type *type, gdb_byte *to, int *optimizedp, int *unavailablep)
Definition: i387-tdep.c:358
int int * to
Definition: varobj.h:282
void i387_supply_xsave(struct regcache *regcache, int regnum, const void *xsave)
Definition: i387-tdep.c:894