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 */ 160