1 /* Target-dependent code for SPARC. 2 3 Copyright (C) 2003-2020 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 SPARC_TDEP_H 21 #define SPARC_TDEP_H 1 22 23 #define SPARC_CORE_REGISTERS \ 24 "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \ 25 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \ 26 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \ 27 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7" 28 29 struct frame_info; 30 struct gdbarch; 31 struct regcache; 32 struct regset; 33 struct trad_frame_saved_reg; 34 35 /* Register offsets for the general-purpose register set. */ 36 37 struct sparc_gregmap 38 { 39 int r_psr_offset; 40 int r_pc_offset; 41 int r_npc_offset; 42 int r_y_offset; 43 int r_wim_offset; 44 int r_tbr_offset; 45 int r_g1_offset; 46 int r_l0_offset; 47 int r_y_size; 48 }; 49 50 struct sparc_fpregmap 51 { 52 int r_f0_offset; 53 int r_fsr_offset; 54 }; 55 56 /* SPARC architecture-specific information. */ 57 58 struct gdbarch_tdep 59 { 60 /* Register numbers for the PN and nPC registers. The definitions 61 for (64-bit) UltraSPARC differ from the (32-bit) SPARC 62 definitions. */ 63 int pc_regnum; 64 int npc_regnum; 65 66 /* Register names specific for architecture (sparc32 vs. sparc64) */ 67 const char **fpu_register_names; 68 size_t fpu_registers_num; 69 const char **cp0_register_names; 70 size_t cp0_registers_num; 71 72 /* Register sets. */ 73 const struct regset *gregset; 74 size_t sizeof_gregset; 75 const struct regset *fpregset; 76 size_t sizeof_fpregset; 77 78 /* Offset of saved PC in jmp_buf. */ 79 int jb_pc_offset; 80 81 /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't 82 treat the PLT special when doing prologue analysis. */ 83 size_t plt_entry_size; 84 85 /* Alternative location for trap return. Used for single-stepping. */ 86 CORE_ADDR (*step_trap) (struct frame_info *frame, unsigned long insn); 87 88 /* ISA-specific data types. */ 89 struct type *sparc_psr_type; 90 struct type *sparc_fsr_type; 91 struct type *sparc64_ccr_type; 92 struct type *sparc64_pstate_type; 93 struct type *sparc64_fsr_type; 94 struct type *sparc64_fprs_type; 95 }; 96 97 /* Register numbers of various important registers. */ 98 99 enum sparc_regnum 100 { 101 SPARC_G0_REGNUM = 0, /* %g0 */ 102 SPARC_G1_REGNUM, 103 SPARC_G2_REGNUM, 104 SPARC_G3_REGNUM, 105 SPARC_G4_REGNUM, 106 SPARC_G5_REGNUM, 107 SPARC_G6_REGNUM, 108 SPARC_G7_REGNUM, /* %g7 */ 109 SPARC_O0_REGNUM, /* %o0 */ 110 SPARC_O1_REGNUM, 111 SPARC_O2_REGNUM, 112 SPARC_O3_REGNUM, 113 SPARC_O4_REGNUM, 114 SPARC_O5_REGNUM, 115 SPARC_SP_REGNUM, /* %sp (%o6) */ 116 SPARC_O7_REGNUM, /* %o7 */ 117 SPARC_L0_REGNUM, /* %l0 */ 118 SPARC_L1_REGNUM, 119 SPARC_L2_REGNUM, 120 SPARC_L3_REGNUM, 121 SPARC_L4_REGNUM, 122 SPARC_L5_REGNUM, 123 SPARC_L6_REGNUM, 124 SPARC_L7_REGNUM, /* %l7 */ 125 SPARC_I0_REGNUM, /* %i0 */ 126 SPARC_I1_REGNUM, 127 SPARC_I2_REGNUM, 128 SPARC_I3_REGNUM, 129 SPARC_I4_REGNUM, 130 SPARC_I5_REGNUM, 131 SPARC_FP_REGNUM, /* %fp (%i6) */ 132 SPARC_I7_REGNUM, /* %i7 */ 133 SPARC_F0_REGNUM, /* %f0 */ 134 SPARC_F1_REGNUM, 135 SPARC_F2_REGNUM, 136 SPARC_F3_REGNUM, 137 SPARC_F4_REGNUM, 138 SPARC_F5_REGNUM, 139 SPARC_F6_REGNUM, 140 SPARC_F7_REGNUM, 141 SPARC_F31_REGNUM /* %f31 */ 142 = SPARC_F0_REGNUM + 31 143 }; 144 145 enum sparc32_regnum 146 { 147 SPARC32_Y_REGNUM /* %y */ 148 = SPARC_F31_REGNUM + 1, 149 SPARC32_PSR_REGNUM, /* %psr */ 150 SPARC32_WIM_REGNUM, /* %wim */ 151 SPARC32_TBR_REGNUM, /* %tbr */ 152 SPARC32_PC_REGNUM, /* %pc */ 153 SPARC32_NPC_REGNUM, /* %npc */ 154 SPARC32_FSR_REGNUM, /* %fsr */ 155 SPARC32_CSR_REGNUM, /* %csr */ 156 }; 157 158 /* Pseudo registers. */ 159 enum sparc32_pseudo_regnum 160 { 161 SPARC32_D0_REGNUM = 0, /* %d0 */ 162 SPARC32_D30_REGNUM /* %d30 */ 163 = SPARC32_D0_REGNUM + 15 164 }; 165 166 167 struct sparc_frame_cache 168 { 169 /* Base address. */ 170 CORE_ADDR base; 171 CORE_ADDR pc; 172 173 /* Do we have a frame? */ 174 int frameless_p; 175 176 /* The offset from the base register to the CFA. */ 177 int frame_offset; 178 179 /* Mask of `local' and `in' registers saved in the register save area. */ 180 unsigned short int saved_regs_mask; 181 182 /* Mask of `out' registers copied or renamed to their `in' sibling. */ 183 unsigned char copied_regs_mask; 184 185 /* Do we have a Structure, Union or Quad-Precision return value? */ 186 int struct_return_p; 187 188 /* Table of saved registers. */ 189 struct trad_frame_saved_reg *saved_regs; 190 }; 191 192 /* Fetch the instruction at PC. */ 193 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc); 194 195 /* Fetch StackGhost Per-Process XOR cookie. */ 196 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch); 197 198 /* Record the effect of a SAVE instruction on CACHE. */ 199 extern void sparc_record_save_insn (struct sparc_frame_cache *cache); 200 201 /* Do a full analysis of the prologue at PC and update CACHE accordingly. */ 202 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch, 203 CORE_ADDR pc, CORE_ADDR current_pc, 204 struct sparc_frame_cache *cache); 205 206 extern struct sparc_frame_cache * 207 sparc_frame_cache (struct frame_info *this_frame, void **this_cache); 208 209 extern struct sparc_frame_cache * 210 sparc32_frame_cache (struct frame_info *this_frame, void **this_cache); 211 212 extern int 213 sparc_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc); 214 215 216 217 extern void sparc_supply_rwindow (struct regcache *regcache, 218 CORE_ADDR sp, int regnum); 219 extern void sparc_collect_rwindow (const struct regcache *regcache, 220 CORE_ADDR sp, int regnum); 221 222 /* Register offsets for SunOS 4. */ 223 extern const struct sparc_gregmap sparc32_sunos4_gregmap; 224 extern const struct sparc_fpregmap sparc32_sunos4_fpregmap; 225 extern const struct sparc_fpregmap sparc32_bsd_fpregmap; 226 227 extern void sparc32_supply_gregset (const struct sparc_gregmap *gregmap, 228 struct regcache *regcache, 229 int regnum, const void *gregs); 230 extern void sparc32_collect_gregset (const struct sparc_gregmap *gregmap, 231 const struct regcache *regcache, 232 int regnum, void *gregs); 233 extern void sparc32_supply_fpregset (const struct sparc_fpregmap *fpregmap, 234 struct regcache *regcache, 235 int regnum, const void *fpregs); 236 extern void sparc32_collect_fpregset (const struct sparc_fpregmap *fpregmap, 237 const struct regcache *regcache, 238 int regnum, void *fpregs); 239 240 extern int sparc_is_annulled_branch_insn (CORE_ADDR pc); 241 242 /* Functions and variables exported from sparc-sol2-tdep.c. */ 243 244 /* Register offsets for Solaris 2. */ 245 extern const struct sparc_gregmap sparc32_sol2_gregmap; 246 extern const struct sparc_fpregmap sparc32_sol2_fpregmap; 247 248 /* Functions and variables exported from sparcnbsd-tdep.c. */ 249 250 /* Register offsets for NetBSD. */ 251 extern const struct sparc_gregmap sparc32nbsd_gregmap; 252 253 /* Return the address of a system call's alternative return 254 address. */ 255 extern CORE_ADDR sparcnbsd_step_trap (struct frame_info *frame, 256 unsigned long insn); 257 258 extern struct trad_frame_saved_reg * 259 sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame); 260 261 #endif /* sparc-tdep.h */ 262