gdb/sparc-tdep.h

   1 /* Target-dependent code for SPARC.
   2
   3    Copyright (C) 2003-2021 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 * const *fpu_register_names;
  68   size_t fpu_registers_num;
  69   const char * const *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 \f
 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 \f
 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 void sparc32nbsd_init_abi (struct gdbarch_info info,
 259                                   struct gdbarch *gdbarch);
 260
 261 extern struct trad_frame_saved_reg *
 262   sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame);
 263
 264 #endif /* sparc-tdep.h */