gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003-2024 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 #include "gdbarch.h"
  24
  25 #define SPARC_CORE_REGISTERS                      \
  26   "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
  27   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \
  28   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
  29   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7"
  30
  31 class frame_info_ptr;
  32 struct gdbarch;
  33 struct regcache;
  34 struct regset;
  35 struct trad_frame_saved_reg;
  36
  37 /* Register offsets for the general-purpose register set.  */
  38
  39 struct sparc_gregmap
  40 {
  41   int r_psr_offset;
  42   int r_pc_offset;
  43   int r_npc_offset;
  44   int r_y_offset;
  45   int r_wim_offset;
  46   int r_tbr_offset;
  47   int r_g1_offset;
  48   int r_l0_offset;
  49   int r_y_size;
  50 };
  51
  52 struct sparc_fpregmap
  53 {
  54   int r_f0_offset;
  55   int r_fsr_offset;
  56 };
  57
  58 /* SPARC architecture-specific information.  */
  59
  60 struct sparc_gdbarch_tdep : gdbarch_tdep_base
  61 {
  62   /* Register numbers for the PN and nPC registers.  The definitions
  63      for (64-bit) UltraSPARC differ from the (32-bit) SPARC
  64      definitions.  */
  65   int pc_regnum = 0;
  66   int npc_regnum = 0;
  67
  68   /* Register names specific for architecture (sparc32 vs. sparc64) */
  69   const char * const *fpu_register_names = nullptr;
  70   size_t fpu_registers_num = 0;
  71   const char * const *cp0_register_names = nullptr;
  72   size_t cp0_registers_num = 0;
  73
  74   /* Register sets.  */
  75   const struct regset *gregset = nullptr;
  76   size_t sizeof_gregset = 0;
  77   const struct regset *fpregset = nullptr;
  78   size_t sizeof_fpregset = 0;
  79
  80   /* Offset of saved PC in jmp_buf.  */
  81   int jb_pc_offset = 0;
  82
  83   /* Size of an Procedure Linkage Table (PLT) entry, 0 if we shouldn't
  84      treat the PLT special when doing prologue analysis.  */
  85   size_t plt_entry_size = 0;
  86
  87   /* Alternative location for trap return.  Used for single-stepping.  */
  88   CORE_ADDR (*step_trap) (frame_info_ptr frame, unsigned long insn)
  89     = nullptr;
  90
  91   /* ISA-specific data types.  */
  92   struct type *sparc_psr_type = nullptr;
  93   struct type *sparc_fsr_type = nullptr;
  94   struct type *sparc64_ccr_type = nullptr;
  95   struct type *sparc64_pstate_type = nullptr;
  96   struct type *sparc64_fsr_type = nullptr;
  97   struct type *sparc64_fprs_type = nullptr;
  98 };
  99
 100 /* Register numbers of various important registers.  */
 101
 102 enum sparc_regnum
 103 {
 104   SPARC_G0_REGNUM = 0,          /* %g0 */
 105   SPARC_G1_REGNUM,
 106   SPARC_G2_REGNUM,
 107   SPARC_G3_REGNUM,
 108   SPARC_G4_REGNUM,
 109   SPARC_G5_REGNUM,
 110   SPARC_G6_REGNUM,
 111   SPARC_G7_REGNUM,              /* %g7 */
 112   SPARC_O0_REGNUM,              /* %o0 */
 113   SPARC_O1_REGNUM,
 114   SPARC_O2_REGNUM,
 115   SPARC_O3_REGNUM,
 116   SPARC_O4_REGNUM,
 117   SPARC_O5_REGNUM,
 118   SPARC_SP_REGNUM,              /* %sp (%o6) */
 119   SPARC_O7_REGNUM,              /* %o7 */
 120   SPARC_L0_REGNUM,              /* %l0 */
 121   SPARC_L1_REGNUM,
 122   SPARC_L2_REGNUM,
 123   SPARC_L3_REGNUM,
 124   SPARC_L4_REGNUM,
 125   SPARC_L5_REGNUM,
 126   SPARC_L6_REGNUM,
 127   SPARC_L7_REGNUM,              /* %l7 */
 128   SPARC_I0_REGNUM,              /* %i0 */
 129   SPARC_I1_REGNUM,
 130   SPARC_I2_REGNUM,
 131   SPARC_I3_REGNUM,
 132   SPARC_I4_REGNUM,
 133   SPARC_I5_REGNUM,
 134   SPARC_FP_REGNUM,              /* %fp (%i6) */
 135   SPARC_I7_REGNUM,              /* %i7 */
 136   SPARC_F0_REGNUM,              /* %f0 */
 137   SPARC_F1_REGNUM,
 138   SPARC_F2_REGNUM,
 139   SPARC_F3_REGNUM,
 140   SPARC_F4_REGNUM,
 141   SPARC_F5_REGNUM,
 142   SPARC_F6_REGNUM,
 143   SPARC_F7_REGNUM,
 144   SPARC_F31_REGNUM              /* %f31 */
 145   = SPARC_F0_REGNUM + 31
 146 };
 147
 148 enum sparc32_regnum
 149 {
 150   SPARC32_Y_REGNUM              /* %y */
 151   = SPARC_F31_REGNUM + 1,
 152   SPARC32_PSR_REGNUM,           /* %psr */
 153   SPARC32_WIM_REGNUM,           /* %wim */
 154   SPARC32_TBR_REGNUM,           /* %tbr */
 155   SPARC32_PC_REGNUM,            /* %pc */
 156   SPARC32_NPC_REGNUM,           /* %npc */
 157   SPARC32_FSR_REGNUM,           /* %fsr */
 158   SPARC32_CSR_REGNUM,           /* %csr */
 159 };
 160
 161 /* Pseudo registers.  */
 162 enum sparc32_pseudo_regnum
 163 {
 164   SPARC32_D0_REGNUM = 0,        /* %d0 */
 165   SPARC32_D30_REGNUM            /* %d30 */
 166   = SPARC32_D0_REGNUM + 15
 167 };
 168 \f
 169
 170 struct sparc_frame_cache
 171 {
 172   /* Base address.  */
 173   CORE_ADDR base;
 174   CORE_ADDR pc;
 175
 176   /* Do we have a frame?  */
 177   int frameless_p;
 178
 179   /* The offset from the base register to the CFA.  */
 180   int frame_offset;
 181
 182   /* Mask of `local' and `in' registers saved in the register save area.  */
 183   unsigned short int saved_regs_mask;
 184
 185   /* Mask of `out' registers copied or renamed to their `in' sibling.  */
 186   unsigned char copied_regs_mask;
 187
 188   /* Do we have a Structure, Union or Quad-Precision return value?  */
 189   int struct_return_p;
 190
 191   /* Table of saved registers.  */
 192   struct trad_frame_saved_reg *saved_regs;
 193 };
 194
 195 /* Fetch the instruction at PC.  */
 196 extern unsigned long sparc_fetch_instruction (CORE_ADDR pc);
 197
 198 /* Fetch StackGhost Per-Process XOR cookie.  */
 199 extern ULONGEST sparc_fetch_wcookie (struct gdbarch *gdbarch);
 200
 201 /* Record the effect of a SAVE instruction on CACHE.  */
 202 extern void sparc_record_save_insn (struct sparc_frame_cache *cache);
 203
 204 /* Do a full analysis of the prologue at PC and update CACHE accordingly.  */
 205 extern CORE_ADDR sparc_analyze_prologue (struct gdbarch *gdbarch,
 206                                          CORE_ADDR pc, CORE_ADDR current_pc,
 207                                          struct sparc_frame_cache *cache);
 208
 209 extern struct sparc_frame_cache *
 210   sparc_frame_cache (frame_info_ptr this_frame, void **this_cache);
 211
 212 extern struct sparc_frame_cache *
 213   sparc32_frame_cache (frame_info_ptr this_frame, void **this_cache);
 214
 215 extern int
 216   sparc_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc);
 217
 218 \f
 219
 220 extern void sparc_supply_rwindow (struct regcache *regcache,
 221                                   CORE_ADDR sp, int regnum);
 222 extern void sparc_collect_rwindow (const struct regcache *regcache,
 223                                    CORE_ADDR sp, int regnum);
 224
 225 /* Register offsets for SunOS 4.  */
 226 extern const struct sparc_gregmap sparc32_sunos4_gregmap;
 227 extern const struct sparc_fpregmap sparc32_sunos4_fpregmap;
 228 extern const struct sparc_fpregmap sparc32_bsd_fpregmap;
 229
 230 extern void sparc32_supply_gregset (const struct sparc_gregmap *gregmap,
 231                                     struct regcache *regcache,
 232                                     int regnum, const void *gregs);
 233 extern void sparc32_collect_gregset (const struct sparc_gregmap *gregmap,
 234                                      const struct regcache *regcache,
 235                                      int regnum, void *gregs);
 236 extern void sparc32_supply_fpregset (const struct sparc_fpregmap *fpregmap,
 237                                      struct regcache *regcache,
 238                                      int regnum, const void *fpregs);
 239 extern void sparc32_collect_fpregset (const struct sparc_fpregmap *fpregmap,
 240                                       const struct regcache *regcache,
 241                                       int regnum, void *fpregs);
 242
 243 extern int sparc_is_annulled_branch_insn (CORE_ADDR pc);
 244
 245 /* Functions and variables exported from sparc-sol2-tdep.c.  */
 246
 247 /* Register offsets for Solaris 2.  */
 248 extern const struct sparc_gregmap sparc32_sol2_gregmap;
 249 extern const struct sparc_fpregmap sparc32_sol2_fpregmap;
 250
 251 /* Functions and variables exported from sparc-netbsd-tdep.c.  */
 252
 253 /* Register offsets for NetBSD.  */
 254 extern const struct sparc_gregmap sparc32nbsd_gregmap;
 255
 256 /* Return the address of a system call's alternative return
 257    address.  */
 258 extern CORE_ADDR sparcnbsd_step_trap (frame_info_ptr frame,
 259                                       unsigned long insn);
 260
 261 extern void sparc32nbsd_init_abi (struct gdbarch_info info,
 262                                   struct gdbarch *gdbarch);
 263
 264 extern struct trad_frame_saved_reg *
 265   sparc32nbsd_sigcontext_saved_regs (frame_info_ptr next_frame);
 266
 267 #endif /* sparc-tdep.h */