1 /* Target-dependent code for the i387. 2 3 Copyright (C) 2000-2023 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 class frame_info_ptr; 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 #define I387_NUM_PKEYS_REGS 1 48 49 #define I387_PKRU_REGNUM(tdep) ((tdep)->pkru_regnum) 50 #define I387_K0_REGNUM(tdep) ((tdep)->k0_regnum) 51 #define I387_NUM_ZMMH_REGS(tdep) ((tdep)->num_zmm_regs) 52 #define I387_ZMM0H_REGNUM(tdep) ((tdep)->zmm0h_regnum) 53 #define I387_NUM_YMM_AVX512_REGS(tdep) ((tdep)->num_ymm_avx512_regs) 54 #define I387_YMM16H_REGNUM(tdep) ((tdep)->ymm16h_regnum) 55 56 #define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8) 57 #define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1) 58 #define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2) 59 #define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3) 60 #define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4) 61 #define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5) 62 #define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6) 63 #define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7) 64 #define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16) 65 #define I387_XMM16_REGNUM(tdep) ((tdep)->xmm16_regnum) 66 #define I387_MXCSR_REGNUM(tdep) \ 67 (I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep)) 68 #define I387_YMM0_REGNUM(tdep) (I387_MXCSR_REGNUM(tdep) + 1) 69 #define I387_YMMENDH_REGNUM(tdep) \ 70 (I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep)) 71 72 #define I387_MPXEND_REGNUM(tdep) \ 73 (I387_BND0R_REGNUM (tdep) + I387_NUM_MPX_REGS) 74 75 #define I387_KEND_REGNUM(tdep) \ 76 (I387_K0_REGNUM (tdep) + I387_NUM_K_REGS) 77 #define I387_ZMMENDH_REGNUM(tdep) \ 78 (I387_ZMM0H_REGNUM (tdep) + I387_NUM_ZMMH_REGS (tdep)) 79 #define I387_YMMH_AVX512_END_REGNUM(tdep) \ 80 (I387_YMM16H_REGNUM (tdep) + I387_NUM_YMM_AVX512_REGS (tdep)) 81 #define I387_XMM_AVX512_END_REGNUM(tdep) \ 82 (I387_XMM16_REGNUM (tdep) + I387_NUM_XMM_AVX512_REGS (tdep)) 83 84 #define I387_PKEYSEND_REGNUM(tdep) \ 85 (I387_PKRU_REGNUM (tdep) + I387_NUM_PKEYS_REGS) 86 87 /* Print out the i387 floating point state. */ 88 89 extern void i387_print_float_info (struct gdbarch *gdbarch, 90 struct ui_file *file, 91 frame_info_ptr frame, 92 const char *args); 93 94 /* Return nonzero if a value of type TYPE stored in register REGNUM 95 needs any special handling. */ 96 97 extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum, 98 struct type *type); 99 100 /* Read a value of type TYPE from register REGNUM in frame FRAME, and 101 return its contents in TO. */ 102 103 extern int i387_register_to_value (frame_info_ptr frame, int regnum, 104 struct type *type, gdb_byte *to, 105 int *optimizedp, int *unavailablep); 106 107 /* Write the contents FROM of a value of type TYPE into register 108 REGNUM in frame FRAME. */ 109 110 extern void i387_value_to_register (frame_info_ptr frame, int regnum, 111 struct type *type, const gdb_byte *from); 112 113 114 /* Size of the memory area use by the 'fsave' and 'fxsave' 115 instructions. */ 116 #define I387_SIZEOF_FSAVE 108 117 #define I387_SIZEOF_FXSAVE 512 118 119 /* Fill register REGNUM in REGCACHE with the appropriate value from 120 *FSAVE. This function masks off any of the reserved bits in 121 *FSAVE. */ 122 123 extern void i387_supply_fsave (struct regcache *regcache, int regnum, 124 const void *fsave); 125 126 /* Fill register REGNUM (if it is a floating-point register) in *FSAVE 127 with the value from REGCACHE. If REGNUM is -1, do this for all 128 registers. This function doesn't touch any of the reserved bits in 129 *FSAVE. */ 130 131 extern void i387_collect_fsave (const struct regcache *regcache, int regnum, 132 void *fsave); 133 134 /* Fill register REGNUM in REGCACHE with the appropriate 135 floating-point or SSE register value from *FXSAVE. This function 136 masks off any of the reserved bits in *FXSAVE. */ 137 138 extern void i387_supply_fxsave (struct regcache *regcache, int regnum, 139 const void *fxsave); 140 141 /* Similar to i387_supply_fxsave, but use XSAVE extended state. */ 142 143 extern void i387_supply_xsave (struct regcache *regcache, int regnum, 144 const void *xsave); 145 146 /* Fill register REGNUM (if it is a floating-point or SSE register) in 147 *FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for 148 all registers. This function doesn't touch any of the reserved 149 bits in *FXSAVE. */ 150 151 extern void i387_collect_fxsave (const struct regcache *regcache, int regnum, 152 void *fxsave); 153 154 /* Similar to i387_collect_fxsave, but use XSAVE extended state. */ 155 156 extern void i387_collect_xsave (const struct regcache *regcache, 157 int regnum, void *xsave, int gcore); 158 159 /* Extract a bitset from XSAVE indicating which features are available in 160 the inferior, but not yet initialised. */ 161 162 extern ULONGEST i387_xsave_get_clear_bv (struct gdbarch *gdbarch, 163 const void *xsave); 164 165 /* Prepare the FPU stack in REGCACHE for a function return. */ 166 167 extern void i387_return_value (struct gdbarch *gdbarch, 168 struct regcache *regcache); 169 170 /* Set all bnd registers to the INIT state. INIT state means 171 all memory range can be accessed. */ 172 extern void i387_reset_bnd_regs (struct gdbarch *gdbarch, 173 struct regcache *regcache); 174 #endif /* i387-tdep.h */ 175