| | 1 | /* Target-dependent code for the i387. |
| | 2 | |
| | 3 | Copyright (C) 2000-2013 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_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) |
| | 37 | |
| | 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)) |
| | 51 | |
| | 52 | /* Print out the i387 floating point state. */ |
| | 53 | |
| | 54 | extern void i387_print_float_info (struct gdbarch *gdbarch, |
| | 55 | struct ui_file *file, |
| | 56 | struct frame_info *frame, |
| | 57 | const char *args); |
| | 58 | |
| | 59 | /* Return nonzero if a value of type TYPE stored in register REGNUM |
| | 60 | needs any special handling. */ |
| | 61 | |
| | 62 | extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum, |
| | 63 | struct type *type); |
| | 64 | |
| | 65 | /* Read a value of type TYPE from register REGNUM in frame FRAME, and |
| | 66 | return its contents in TO. */ |
| | 67 | |
| | 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); |
| | 71 | |
| | 72 | /* Write the contents FROM of a value of type TYPE into register |
| | 73 | REGNUM in frame FRAME. */ |
| | 74 | |
| | 75 | extern void i387_value_to_register (struct frame_info *frame, int regnum, |
| | 76 | struct type *type, const gdb_byte *from); |
| | 77 | \f |
| | 78 | |
| | 79 | /* Size of the memory area use by the 'fsave' and 'fxsave' |
| | 80 | instructions. */ |
| | 81 | #define I387_SIZEOF_FSAVE 108 |
| | 82 | #define I387_SIZEOF_FXSAVE 512 |
| | 83 | |
| | 84 | /* Fill register REGNUM in REGCACHE with the appropriate value from |
| | 85 | *FSAVE. This function masks off any of the reserved bits in |
| | 86 | *FSAVE. */ |
| | 87 | |
| | 88 | extern void i387_supply_fsave (struct regcache *regcache, int regnum, |
| | 89 | const void *fsave); |
| | 90 | |
| | 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 |
| | 94 | *FSAVE. */ |
| | 95 | |
| | 96 | extern void i387_collect_fsave (const struct regcache *regcache, int regnum, |
| | 97 | void *fsave); |
| | 98 | |
| | 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. */ |
| | 102 | |
| | 103 | extern void i387_supply_fxsave (struct regcache *regcache, int regnum, |
| | 104 | const void *fxsave); |
| | 105 | |
| | 106 | /* Similar to i387_supply_fxsave, but use XSAVE extended state. */ |
| | 107 | |
| | 108 | extern void i387_supply_xsave (struct regcache *regcache, int regnum, |
| | 109 | const void *xsave); |
| | 110 | |
| | 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 |
| | 114 | bits in *FXSAVE. */ |
| | 115 | |
| | 116 | extern void i387_collect_fxsave (const struct regcache *regcache, int regnum, |
| | 117 | void *fxsave); |
| | 118 | |
| | 119 | /* Similar to i387_collect_fxsave, but use XSAVE extended state. */ |
| | 120 | |
| | 121 | extern void i387_collect_xsave (const struct regcache *regcache, |
| | 122 | int regnum, void *xsave, int gcore); |
| | 123 | |
| | 124 | /* Prepare the FPU stack in REGCACHE for a function return. */ |
| | 125 | |
| | 126 | extern void i387_return_value (struct gdbarch *gdbarch, |
| | 127 | struct regcache *regcache); |
| | 128 | |
| | 129 | #endif /* i387-tdep.h */ |
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