gdb/gdbarch.h

   1 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
   2
   3 /* Dynamic architecture support for GDB, the GNU debugger.
   4
   5    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   6    2007, 2008, 2009 Free Software Foundation, Inc.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 /* This file was created with the aid of ``gdbarch.sh''.
  24
  25    The Bourne shell script ``gdbarch.sh'' creates the files
  26    ``new-gdbarch.c'' and ``new-gdbarch.h and then compares them
  27    against the existing ``gdbarch.[hc]''.  Any differences found
  28    being reported.
  29
  30    If editing this file, please also run gdbarch.sh and merge any
  31    changes into that script. Conversely, when making sweeping changes
  32    to this file, modifying gdbarch.sh and using its output may prove
  33    easier.  */
  34
  35 #ifndef GDBARCH_H
  36 #define GDBARCH_H
  37
  38 struct floatformat;
  39 struct ui_file;
  40 struct frame_info;
  41 struct value;
  42 struct objfile;
  43 struct obj_section;
  44 struct minimal_symbol;
  45 struct regcache;
  46 struct reggroup;
  47 struct regset;
  48 struct disassemble_info;
  49 struct target_ops;
  50 struct obstack;
  51 struct bp_target_info;
  52 struct target_desc;
  53 struct displaced_step_closure;
  54 struct core_regset_section;
  55 struct syscall;
  56 struct agent_expr;
  57 struct axs_value;
  58
  59 /* The architecture associated with the connection to the target.
  60
  61    The architecture vector provides some information that is really
  62    a property of the target: The layout of certain packets, for instance;
  63    or the solib_ops vector.  Etc.  To differentiate architecture accesses
  64    to per-target properties from per-thread/per-frame/per-objfile properties,
  65    accesses to per-target properties should be made through target_gdbarch.
  66
  67    Eventually, when support for multiple targets is implemented in
  68    GDB, this global should be made target-specific.  */
  69 extern struct gdbarch *target_gdbarch;
  70
  71
  72 /* The following are pre-initialized by GDBARCH.  */
  73
  74 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
  75 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized.  */
  76
  77 extern int gdbarch_byte_order (struct gdbarch *gdbarch);
  78 /* set_gdbarch_byte_order() - not applicable - pre-initialized.  */
  79
  80 extern int gdbarch_byte_order_for_code (struct gdbarch *gdbarch);
  81 /* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized.  */
  82
  83 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
  84 /* set_gdbarch_osabi() - not applicable - pre-initialized.  */
  85
  86 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
  87 /* set_gdbarch_target_desc() - not applicable - pre-initialized.  */
  88
  89
  90 /* The following are initialized by the target dependent code.  */
  91
  92 /* The bit byte-order has to do just with numbering of bits in debugging symbols
  93    and such.  Conceptually, it's quite separate from byte/word byte order. */
  94
  95 extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
  96 extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);
  97
  98 /* Number of bits in a char or unsigned char for the target machine.
  99    Just like CHAR_BIT in <limits.h> but describes the target machine.
 100    v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 101
 102    Number of bits in a short or unsigned short for the target machine. */
 103
 104 extern int gdbarch_short_bit (struct gdbarch *gdbarch);
 105 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
 106
 107 /* Number of bits in an int or unsigned int for the target machine. */
 108
 109 extern int gdbarch_int_bit (struct gdbarch *gdbarch);
 110 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
 111
 112 /* Number of bits in a long or unsigned long for the target machine. */
 113
 114 extern int gdbarch_long_bit (struct gdbarch *gdbarch);
 115 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
 116
 117 /* Number of bits in a long long or unsigned long long for the target
 118    machine. */
 119
 120 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
 121 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
 122
 123 /* Alignment of a long long or unsigned long long for the target
 124    machine. */
 125
 126 extern int gdbarch_long_long_align_bit (struct gdbarch *gdbarch);
 127 extern void set_gdbarch_long_long_align_bit (struct gdbarch *gdbarch, int long_long_align_bit);
 128
 129 /* The ABI default bit-size and format for "half", "float", "double", and
 130    "long double".  These bit/format pairs should eventually be combined
 131    into a single object.  For the moment, just initialize them as a pair.
 132    Each format describes both the big and little endian layouts (if
 133    useful). */
 134
 135 extern int gdbarch_half_bit (struct gdbarch *gdbarch);
 136 extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit);
 137
 138 extern const struct floatformat ** gdbarch_half_format (struct gdbarch *gdbarch);
 139 extern void set_gdbarch_half_format (struct gdbarch *gdbarch, const struct floatformat ** half_format);
 140
 141 extern int gdbarch_float_bit (struct gdbarch *gdbarch);
 142 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
 143
 144 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
 145 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
 146
 147 extern int gdbarch_double_bit (struct gdbarch *gdbarch);
 148 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
 149
 150 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
 151 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
 152
 153 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
 154 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
 155
 156 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
 157 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
 158
 159 /* For most targets, a pointer on the target and its representation as an
 160    address in GDB have the same size and "look the same".  For such a
 161    target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 162    / addr_bit will be set from it.
 163
 164    If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 165    also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
 166    gdbarch_address_to_pointer as well.
 167
 168    ptr_bit is the size of a pointer on the target */
 169
 170 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
 171 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
 172
 173 /* addr_bit is the size of a target address as represented in gdb */
 174
 175 extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
 176 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
 177
 178 /* dwarf2_addr_size is the target address size as used in the Dwarf debug
 179    info.  For .debug_frame FDEs, this is supposed to be the target address
 180    size from the associated CU header, and which is equivalent to the
 181    DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
 182    Unfortunately there is no good way to determine this value.  Therefore
 183    dwarf2_addr_size simply defaults to the target pointer size.
 184
 185    dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
 186    defined using the target's pointer size so far.
 187
 188    Note that dwarf2_addr_size only needs to be redefined by a target if the
 189    GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
 190    and if Dwarf versions < 4 need to be supported. */
 191
 192 extern int gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch);
 193 extern void set_gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch, int dwarf2_addr_size);
 194
 195 /* One if `char' acts like `signed char', zero if `unsigned char'. */
 196
 197 extern int gdbarch_char_signed (struct gdbarch *gdbarch);
 198 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
 199
 200 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
 201
 202 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
 203 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
 204 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
 205
 206 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
 207
 208 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
 209 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
 210 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
 211
 212 /* Function for getting target's idea of a frame pointer.  FIXME: GDB's
 213    whole scheme for dealing with "frames" and "frame pointers" needs a
 214    serious shakedown. */
 215
 216 typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 217 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 218 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
 219
 220 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
 221
 222 typedef enum register_status (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 223 extern enum register_status gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 224 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
 225
 226 /* Read a register into a new struct value.  If the register is wholly
 227    or partly unavailable, this should call mark_value_bytes_unavailable
 228    as appropriate.  If this is defined, then pseudo_register_read will
 229    never be called. */
 230
 231 extern int gdbarch_pseudo_register_read_value_p (struct gdbarch *gdbarch);
 232
 233 typedef struct value * (gdbarch_pseudo_register_read_value_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
 234 extern struct value * gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
 235 extern void set_gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_value_ftype *pseudo_register_read_value);
 236
 237 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
 238
 239 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 240 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 241 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
 242
 243 extern int gdbarch_num_regs (struct gdbarch *gdbarch);
 244 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
 245
 246 /* This macro gives the number of pseudo-registers that live in the
 247    register namespace but do not get fetched or stored on the target.
 248    These pseudo-registers may be aliases for other registers,
 249    combinations of other registers, or they may be computed by GDB. */
 250
 251 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
 252 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
 253
 254 /* Assemble agent expression bytecode to collect pseudo-register REG.
 255    Return -1 if something goes wrong, 0 otherwise. */
 256
 257 extern int gdbarch_ax_pseudo_register_collect_p (struct gdbarch *gdbarch);
 258
 259 typedef int (gdbarch_ax_pseudo_register_collect_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
 260 extern int gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
 261 extern void set_gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_collect_ftype *ax_pseudo_register_collect);
 262
 263 /* Assemble agent expression bytecode to push the value of pseudo-register
 264    REG on the interpreter stack.
 265    Return -1 if something goes wrong, 0 otherwise. */
 266
 267 extern int gdbarch_ax_pseudo_register_push_stack_p (struct gdbarch *gdbarch);
 268
 269 typedef int (gdbarch_ax_pseudo_register_push_stack_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
 270 extern int gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
 271 extern void set_gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_push_stack_ftype *ax_pseudo_register_push_stack);
 272
 273 /* GDB's standard (or well known) register numbers.  These can map onto
 274    a real register or a pseudo (computed) register or not be defined at
 275    all (-1).
 276    gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
 277
 278 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
 279 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
 280
 281 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
 282 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
 283
 284 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
 285 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
 286
 287 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
 288 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
 289
 290 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
 291
 292 typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr);
 293 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
 294 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
 295
 296 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
 297
 298 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr);
 299 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
 300 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
 301
 302 /* Convert from an sdb register number to an internal gdb register number. */
 303
 304 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr);
 305 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
 306 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
 307
 308 /* Provide a default mapping from a DWARF2 register number to a gdb REGNUM. */
 309
 310 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr);
 311 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
 312 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
 313
 314 typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
 315 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
 316 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
 317
 318 /* Return the type of a register specified by the architecture.  Only
 319    the register cache should call this function directly; others should
 320    use "register_type". */
 321
 322 extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
 323
 324 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
 325 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
 326 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
 327
 328 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */
 329
 330 extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch);
 331
 332 typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame);
 333 extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame);
 334 extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);
 335
 336 /* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
 337    deprecated_fp_regnum. */
 338
 339 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
 340 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
 341
 342 /* See gdbint.texinfo.  See infcall.c. */
 343
 344 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
 345
 346 typedef CORE_ADDR (gdbarch_push_dummy_call_ftype) (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr);
 347 extern CORE_ADDR gdbarch_push_dummy_call (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr);
 348 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
 349
 350 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
 351 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
 352
 353 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
 354
 355 typedef CORE_ADDR (gdbarch_push_dummy_code_ftype) (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
 356 extern CORE_ADDR gdbarch_push_dummy_code (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
 357 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
 358
 359 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 360 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 361 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
 362
 363 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
 364
 365 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 366 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 367 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
 368
 369 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
 370
 371 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 372 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 373 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
 374
 375 /* MAP a GDB RAW register number onto a simulator register number.  See
 376    also include/...-sim.h. */
 377
 378 typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr);
 379 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
 380 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
 381
 382 typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum);
 383 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
 384 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
 385
 386 typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum);
 387 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
 388 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
 389
 390 /* setjmp/longjmp support. */
 391
 392 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
 393
 394 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
 395 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
 396 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
 397
 398 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
 399 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
 400
 401 typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
 402 extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
 403 extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);
 404
 405 typedef int (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
 406 extern int gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
 407 extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);
 408
 409 typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 410 extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 411 extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);
 412
 413 /* Construct a value representing the contents of register REGNUM in
 414    frame FRAME, interpreted as type TYPE.  The routine needs to
 415    allocate and return a struct value with all value attributes
 416    (but not the value contents) filled in. */
 417
 418 typedef struct value * (gdbarch_value_from_register_ftype) (struct type *type, int regnum, struct frame_info *frame);
 419 extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_info *frame);
 420 extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);
 421
 422 typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 423 extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 424 extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);
 425
 426 typedef void (gdbarch_address_to_pointer_ftype) (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
 427 extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
 428 extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);
 429
 430 extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);
 431
 432 typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 433 extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 434 extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);
 435
 436 /* Return the return-value convention that will be used by FUNCTYPE
 437    to return a value of type VALTYPE.  FUNCTYPE may be NULL in which
 438    case the return convention is computed based only on VALTYPE.
 439
 440    If READBUF is not NULL, extract the return value and save it in this buffer.
 441
 442    If WRITEBUF is not NULL, it contains a return value which will be
 443    stored into the appropriate register.  This can be used when we want
 444    to force the value returned by a function (see the "return" command
 445    for instance). */
 446
 447 extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
 448
 449 typedef enum return_value_convention (gdbarch_return_value_ftype) (struct gdbarch *gdbarch, struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
 450 extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
 451 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
 452
 453 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
 454 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 455 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
 456
 457 extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch);
 458
 459 typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
 460 extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 461 extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue);
 462
 463 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
 464 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
 465 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
 466
 467 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 468 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 469 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
 470
 471 /* Return the adjusted address and kind to use for Z0/Z1 packets.
 472    KIND is usually the memory length of the breakpoint, but may have a
 473    different target-specific meaning. */
 474
 475 typedef void (gdbarch_remote_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
 476 extern void gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
 477 extern void set_gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_remote_breakpoint_from_pc_ftype *remote_breakpoint_from_pc);
 478
 479 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
 480
 481 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 482 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 483 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
 484
 485 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 486 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 487 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
 488
 489 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 490 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 491 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
 492
 493 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
 494 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
 495
 496 /* A function can be addressed by either it's "pointer" (possibly a
 497    descriptor address) or "entry point" (first executable instruction).
 498    The method "convert_from_func_ptr_addr" converting the former to the
 499    latter.  gdbarch_deprecated_function_start_offset is being used to implement
 500    a simplified subset of that functionality - the function's address
 501    corresponds to the "function pointer" and the function's start
 502    corresponds to the "function entry point" - and hence is redundant. */
 503
 504 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
 505 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
 506
 507 /* Return the remote protocol register number associated with this
 508    register.  Normally the identity mapping. */
 509
 510 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
 511 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
 512 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
 513
 514 /* Fetch the target specific address used to represent a load module. */
 515
 516 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
 517
 518 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
 519 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
 520 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
 521
 522 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
 523 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
 524
 525 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
 526
 527 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 528 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
 529 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
 530
 531 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
 532
 533 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 534 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
 535 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
 536
 537 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 538    frame-base.  Enable frame-base before frame-unwind. */
 539
 540 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
 541
 542 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
 543 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
 544 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
 545
 546 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
 547
 548 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
 549 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
 550 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
 551
 552 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
 553 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
 554 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
 555
 556 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
 557 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
 558
 559 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 560 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 561 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
 562
 563 /* On some machines there are bits in addresses which are not really
 564    part of the address, but are used by the kernel, the hardware, etc.
 565    for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 566    we get a "real" address such as one would find in a symbol table.
 567    This is used only for addresses of instructions, and even then I'm
 568    not sure it's used in all contexts.  It exists to deal with there
 569    being a few stray bits in the PC which would mislead us, not as some
 570    sort of generic thing to handle alignment or segmentation (it's
 571    possible it should be in TARGET_READ_PC instead). */
 572
 573 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 574 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
 575 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
 576
 577 /* It is not at all clear why gdbarch_smash_text_address is not folded into
 578    gdbarch_addr_bits_remove. */
 579
 580 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 581 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr);
 582 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address);
 583
 584 /* FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 585    indicates if the target needs software single step.  An ISA method to
 586    implement it.
 587
 588    FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 589    breakpoints using the breakpoint system instead of blatting memory directly
 590    (as with rs6000).
 591
 592    FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 593    target can single step.  If not, then implement single step using breakpoints.
 594
 595    A return value of 1 means that the software_single_step breakpoints
 596    were inserted; 0 means they were not. */
 597
 598 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
 599
 600 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
 601 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
 602 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
 603
 604 /* Return non-zero if the processor is executing a delay slot and a
 605    further single-step is needed before the instruction finishes. */
 606
 607 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
 608
 609 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
 610 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
 611 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
 612
 613 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 614    disassembler.  Perhaps objdump can handle it? */
 615
 616 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
 617 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
 618 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
 619
 620 typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
 621 extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
 622 extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);
 623
 624 /* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
 625    evaluates non-zero, this is the address where the debugger will place
 626    a step-resume breakpoint to get us past the dynamic linker. */
 627
 628 typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
 629 extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
 630 extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);
 631
 632 /* Some systems also have trampoline code for returning from shared libs. */
 633
 634 typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
 635 extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
 636 extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
 637
 638 /* A target might have problems with watchpoints as soon as the stack
 639    frame of the current function has been destroyed.  This mostly happens
 640    as the first action in a funtion's epilogue.  in_function_epilogue_p()
 641    is defined to return a non-zero value if either the given addr is one
 642    instruction after the stack destroying instruction up to the trailing
 643    return instruction or if we can figure out that the stack frame has
 644    already been invalidated regardless of the value of addr.  Targets
 645    which don't suffer from that problem could just let this functionality
 646    untouched. */
 647
 648 typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 649 extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr);
 650 extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p);
 651
 652 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
 653 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
 654 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
 655
 656 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
 657 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
 658 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
 659
 660 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
 661 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
 662
 663 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
 664 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
 665
 666 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
 667
 668 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
 669 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
 670 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
 671
 672 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
 673
 674 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
 675 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
 676 extern void set_gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_to_name_ftype *address_class_type_flags_to_name);
 677
 678 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
 679
 680 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 681 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 682 extern void set_gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_name_to_type_flags_ftype *address_class_name_to_type_flags);
 683
 684 /* Is a register in a group */
 685
 686 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 687 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 688 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
 689
 690 /* Fetch the pointer to the ith function argument. */
 691
 692 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
 693
 694 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
 695 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
 696 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
 697
 698 /* Return the appropriate register set for a core file section with
 699    name SECT_NAME and size SECT_SIZE. */
 700
 701 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch);
 702
 703 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 704 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 705 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section);
 706
 707 /* Supported register notes in a core file. */
 708
 709 extern struct core_regset_section * gdbarch_core_regset_sections (struct gdbarch *gdbarch);
 710 extern void set_gdbarch_core_regset_sections (struct gdbarch *gdbarch, struct core_regset_section * core_regset_sections);
 711
 712 /* Create core file notes */
 713
 714 extern int gdbarch_make_corefile_notes_p (struct gdbarch *gdbarch);
 715
 716 typedef char * (gdbarch_make_corefile_notes_ftype) (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
 717 extern char * gdbarch_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
 718 extern void set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch, gdbarch_make_corefile_notes_ftype *make_corefile_notes);
 719
 720 /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 721    core file into buffer READBUF with length LEN. */
 722
 723 extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);
 724
 725 typedef LONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 726 extern LONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 727 extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);
 728
 729 /* How the core target converts a PTID from a core file to a string. */
 730
 731 extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch);
 732
 733 typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
 734 extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
 735 extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str);
 736
 737 /* BFD target to use when generating a core file. */
 738
 739 extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch);
 740
 741 extern const char * gdbarch_gcore_bfd_target (struct gdbarch *gdbarch);
 742 extern void set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch, const char * gcore_bfd_target);
 743
 744 /* If the elements of C++ vtables are in-place function descriptors rather
 745    than normal function pointers (which may point to code or a descriptor),
 746    set this to one. */
 747
 748 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
 749 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
 750
 751 /* Set if the least significant bit of the delta is used instead of the least
 752    significant bit of the pfn for pointers to virtual member functions. */
 753
 754 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
 755 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
 756
 757 /* Advance PC to next instruction in order to skip a permanent breakpoint. */
 758
 759 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch);
 760
 761 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
 762 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
 763 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
 764
 765 /* The maximum length of an instruction on this architecture in bytes. */
 766
 767 extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch);
 768
 769 extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch);
 770 extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length);
 771
 772 /* Copy the instruction at FROM to TO, and make any adjustments
 773    necessary to single-step it at that address.
 774
 775    REGS holds the state the thread's registers will have before
 776    executing the copied instruction; the PC in REGS will refer to FROM,
 777    not the copy at TO.  The caller should update it to point at TO later.
 778
 779    Return a pointer to data of the architecture's choice to be passed
 780    to gdbarch_displaced_step_fixup.  Or, return NULL to indicate that
 781    the instruction's effects have been completely simulated, with the
 782    resulting state written back to REGS.
 783
 784    For a general explanation of displaced stepping and how GDB uses it,
 785    see the comments in infrun.c.
 786
 787    The TO area is only guaranteed to have space for
 788    gdbarch_max_insn_length (arch) bytes, so this function must not
 789    write more bytes than that to that area.
 790
 791    If you do not provide this function, GDB assumes that the
 792    architecture does not support displaced stepping.
 793
 794    If your architecture doesn't need to adjust instructions before
 795    single-stepping them, consider using simple_displaced_step_copy_insn
 796    here. */
 797
 798 extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch);
 799
 800 typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 801 extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 802 extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);
 803
 804 /* Return true if GDB should use hardware single-stepping to execute
 805    the displaced instruction identified by CLOSURE.  If false,
 806    GDB will simply restart execution at the displaced instruction
 807    location, and it is up to the target to ensure GDB will receive
 808    control again (e.g. by placing a software breakpoint instruction
 809    into the displaced instruction buffer).
 810
 811    The default implementation returns false on all targets that
 812    provide a gdbarch_software_single_step routine, and true otherwise. */
 813
 814 typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 815 extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 816 extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);
 817
 818 /* Fix up the state resulting from successfully single-stepping a
 819    displaced instruction, to give the result we would have gotten from
 820    stepping the instruction in its original location.
 821
 822    REGS is the register state resulting from single-stepping the
 823    displaced instruction.
 824
 825    CLOSURE is the result from the matching call to
 826    gdbarch_displaced_step_copy_insn.
 827
 828    If you provide gdbarch_displaced_step_copy_insn.but not this
 829    function, then GDB assumes that no fixup is needed after
 830    single-stepping the instruction.
 831
 832    For a general explanation of displaced stepping and how GDB uses it,
 833    see the comments in infrun.c. */
 834
 835 extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch);
 836
 837 typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 838 extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 839 extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup);
 840
 841 /* Free a closure returned by gdbarch_displaced_step_copy_insn.
 842
 843    If you provide gdbarch_displaced_step_copy_insn, you must provide
 844    this function as well.
 845
 846    If your architecture uses closures that don't need to be freed, then
 847    you can use simple_displaced_step_free_closure here.
 848
 849    For a general explanation of displaced stepping and how GDB uses it,
 850    see the comments in infrun.c. */
 851
 852 typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 853 extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 854 extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure);
 855
 856 /* Return the address of an appropriate place to put displaced
 857    instructions while we step over them.  There need only be one such
 858    place, since we're only stepping one thread over a breakpoint at a
 859    time.
 860
 861    For a general explanation of displaced stepping and how GDB uses it,
 862    see the comments in infrun.c. */
 863
 864 typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch);
 865 extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch);
 866 extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location);
 867
 868 /* Relocate an instruction to execute at a different address.  OLDLOC
 869    is the address in the inferior memory where the instruction to
 870    relocate is currently at.  On input, TO points to the destination
 871    where we want the instruction to be copied (and possibly adjusted)
 872    to.  On output, it points to one past the end of the resulting
 873    instruction(s).  The effect of executing the instruction at TO shall
 874    be the same as if executing it at FROM.  For example, call
 875    instructions that implicitly push the return address on the stack
 876    should be adjusted to return to the instruction after OLDLOC;
 877    relative branches, and other PC-relative instructions need the
 878    offset adjusted; etc. */
 879
 880 extern int gdbarch_relocate_instruction_p (struct gdbarch *gdbarch);
 881
 882 typedef void (gdbarch_relocate_instruction_ftype) (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
 883 extern void gdbarch_relocate_instruction (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
 884 extern void set_gdbarch_relocate_instruction (struct gdbarch *gdbarch, gdbarch_relocate_instruction_ftype *relocate_instruction);
 885
 886 /* Refresh overlay mapped state for section OSECT. */
 887
 888 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
 889
 890 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
 891 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
 892 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
 893
 894 extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);
 895
 896 typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 897 extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 898 extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);
 899
 900 /* Handle special encoding of static variables in stabs debug info. */
 901
 902 extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);
 903
 904 typedef char * (gdbarch_static_transform_name_ftype) (char *name);
 905 extern char * gdbarch_static_transform_name (struct gdbarch *gdbarch, char *name);
 906 extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);
 907
 908 /* Set if the address in N_SO or N_FUN stabs may be zero. */
 909
 910 extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
 911 extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);
 912
 913 /* Parse the instruction at ADDR storing in the record execution log
 914    the registers REGCACHE and memory ranges that will be affected when
 915    the instruction executes, along with their current values.
 916    Return -1 if something goes wrong, 0 otherwise. */
 917
 918 extern int gdbarch_process_record_p (struct gdbarch *gdbarch);
 919
 920 typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
 921 extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
 922 extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record);
 923
 924 /* Save process state after a signal.
 925    Return -1 if something goes wrong, 0 otherwise. */
 926
 927 extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch);
 928
 929 typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
 930 extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
 931 extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal);
 932
 933 /* Signal translation: translate inferior's signal (host's) number into
 934    GDB's representation. */
 935
 936 typedef enum target_signal (gdbarch_target_signal_from_host_ftype) (struct gdbarch *gdbarch, int signo);
 937 extern enum target_signal gdbarch_target_signal_from_host (struct gdbarch *gdbarch, int signo);
 938 extern void set_gdbarch_target_signal_from_host (struct gdbarch *gdbarch, gdbarch_target_signal_from_host_ftype *target_signal_from_host);
 939
 940 /* Signal translation: translate GDB's signal number into inferior's host
 941    signal number. */
 942
 943 typedef int (gdbarch_target_signal_to_host_ftype) (struct gdbarch *gdbarch, enum target_signal ts);
 944 extern int gdbarch_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts);
 945 extern void set_gdbarch_target_signal_to_host (struct gdbarch *gdbarch, gdbarch_target_signal_to_host_ftype *target_signal_to_host);
 946
 947 /* Extra signal info inspection.
 948
 949    Return a type suitable to inspect extra signal information. */
 950
 951 extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch);
 952
 953 typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch);
 954 extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch);
 955 extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type);
 956
 957 /* Record architecture-specific information from the symbol table. */
 958
 959 extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);
 960
 961 typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
 962 extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
 963 extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);
 964
 965 /* Function for the 'catch syscall' feature.
 966    Get architecture-specific system calls information from registers. */
 967
 968 extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch);
 969
 970 typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
 971 extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid);
 972 extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number);
 973
 974 /* True if the list of shared libraries is one and only for all
 975    processes, as opposed to a list of shared libraries per inferior.
 976    This usually means that all processes, although may or may not share
 977    an address space, will see the same set of symbols at the same
 978    addresses. */
 979
 980 extern int gdbarch_has_global_solist (struct gdbarch *gdbarch);
 981 extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist);
 982
 983 /* On some targets, even though each inferior has its own private
 984    address space, the debug interface takes care of making breakpoints
 985    visible to all address spaces automatically.  For such cases,
 986    this property should be set to true. */
 987
 988 extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch);
 989 extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints);
 990
 991 /* True if inferiors share an address space (e.g., uClinux). */
 992
 993 typedef int (gdbarch_has_shared_address_space_ftype) (struct gdbarch *gdbarch);
 994 extern int gdbarch_has_shared_address_space (struct gdbarch *gdbarch);
 995 extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbarch_has_shared_address_space_ftype *has_shared_address_space);
 996
 997 /* True if a fast tracepoint can be set at an address. */
 998
 999 typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
1000 extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
1001 extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at);
1002
1003 /* Return the "auto" target charset. */
1004
1005 typedef const char * (gdbarch_auto_charset_ftype) (void);
1006 extern const char * gdbarch_auto_charset (struct gdbarch *gdbarch);
1007 extern void set_gdbarch_auto_charset (struct gdbarch *gdbarch, gdbarch_auto_charset_ftype *auto_charset);
1008
1009 /* Return the "auto" target wide charset. */
1010
1011 typedef const char * (gdbarch_auto_wide_charset_ftype) (void);
1012 extern const char * gdbarch_auto_wide_charset (struct gdbarch *gdbarch);
1013 extern void set_gdbarch_auto_wide_charset (struct gdbarch *gdbarch, gdbarch_auto_wide_charset_ftype *auto_wide_charset);
1014
1015 /* If non-empty, this is a file extension that will be opened in place
1016    of the file extension reported by the shared library list.
1017
1018    This is most useful for toolchains that use a post-linker tool,
1019    where the names of the files run on the target differ in extension
1020    compared to the names of the files GDB should load for debug info. */
1021
1022 extern const char * gdbarch_solib_symbols_extension (struct gdbarch *gdbarch);
1023 extern void set_gdbarch_solib_symbols_extension (struct gdbarch *gdbarch, const char * solib_symbols_extension);
1024
1025 /* If true, the target OS has DOS-based file system semantics.  That
1026    is, absolute paths include a drive name, and the backslash is
1027    considered a directory separator. */
1028
1029 extern int gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch);
1030 extern void set_gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch, int has_dos_based_file_system);
1031
1032 /* Generate bytecodes to collect the return address in a frame.
1033    Since the bytecodes run on the target, possibly with GDB not even
1034    connected, the full unwinding machinery is not available, and
1035    typically this function will issue bytecodes for one or more likely
1036    places that the return address may be found. */
1037
1038 typedef void (gdbarch_gen_return_address_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
1039 extern void gdbarch_gen_return_address (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
1040 extern void set_gdbarch_gen_return_address (struct gdbarch *gdbarch, gdbarch_gen_return_address_ftype *gen_return_address);
1041
1042 /* Implement the "info proc" command. */
1043
1044 extern int gdbarch_info_proc_p (struct gdbarch *gdbarch);
1045
1046 typedef void (gdbarch_info_proc_ftype) (struct gdbarch *gdbarch, char *args, enum info_proc_what what);
1047 extern void gdbarch_info_proc (struct gdbarch *gdbarch, char *args, enum info_proc_what what);
1048 extern void set_gdbarch_info_proc (struct gdbarch *gdbarch, gdbarch_info_proc_ftype *info_proc);
1049
1050 /* Definition for an unknown syscall, used basically in error-cases.  */
1051 #define UNKNOWN_SYSCALL (-1)
1052
1053 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1054
1055
1056 /* Mechanism for co-ordinating the selection of a specific
1057    architecture.
1058
1059    GDB targets (*-tdep.c) can register an interest in a specific
1060    architecture.  Other GDB components can register a need to maintain
1061    per-architecture data.
1062
1063    The mechanisms below ensures that there is only a loose connection
1064    between the set-architecture command and the various GDB
1065    components.  Each component can independently register their need
1066    to maintain architecture specific data with gdbarch.
1067
1068    Pragmatics:
1069
1070    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
1071    didn't scale.
1072
1073    The more traditional mega-struct containing architecture specific
1074    data for all the various GDB components was also considered.  Since
1075    GDB is built from a variable number of (fairly independent)
1076    components it was determined that the global aproach was not
1077    applicable.  */
1078
1079
1080 /* Register a new architectural family with GDB.
1081
1082    Register support for the specified ARCHITECTURE with GDB.  When
1083    gdbarch determines that the specified architecture has been
1084    selected, the corresponding INIT function is called.
1085
1086    --
1087
1088    The INIT function takes two parameters: INFO which contains the
1089    information available to gdbarch about the (possibly new)
1090    architecture; ARCHES which is a list of the previously created
1091    ``struct gdbarch'' for this architecture.
1092
1093    The INFO parameter is, as far as possible, be pre-initialized with
1094    information obtained from INFO.ABFD or the global defaults.
1095
1096    The ARCHES parameter is a linked list (sorted most recently used)
1097    of all the previously created architures for this architecture
1098    family.  The (possibly NULL) ARCHES->gdbarch can used to access
1099    values from the previously selected architecture for this
1100    architecture family.
1101
1102    The INIT function shall return any of: NULL - indicating that it
1103    doesn't recognize the selected architecture; an existing ``struct
1104    gdbarch'' from the ARCHES list - indicating that the new
1105    architecture is just a synonym for an earlier architecture (see
1106    gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
1107    - that describes the selected architecture (see gdbarch_alloc()).
1108
1109    The DUMP_TDEP function shall print out all target specific values.
1110    Care should be taken to ensure that the function works in both the
1111    multi-arch and non- multi-arch cases.  */
1112
1113 struct gdbarch_list
1114 {
1115   struct gdbarch *gdbarch;
1116   struct gdbarch_list *next;
1117 };
1118
1119 struct gdbarch_info
1120 {
1121   /* Use default: NULL (ZERO).  */
1122   const struct bfd_arch_info *bfd_arch_info;
1123
1124   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
1125   int byte_order;
1126
1127   int byte_order_for_code;
1128
1129   /* Use default: NULL (ZERO).  */
1130   bfd *abfd;
1131
1132   /* Use default: NULL (ZERO).  */
1133   struct gdbarch_tdep_info *tdep_info;
1134
1135   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
1136   enum gdb_osabi osabi;
1137
1138   /* Use default: NULL (ZERO).  */
1139   const struct target_desc *target_desc;
1140 };
1141
1142 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1143 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1144
1145 /* DEPRECATED - use gdbarch_register() */
1146 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1147
1148 extern void gdbarch_register (enum bfd_architecture architecture,
1149                               gdbarch_init_ftype *,
1150                               gdbarch_dump_tdep_ftype *);
1151
1152
1153 /* Return a freshly allocated, NULL terminated, array of the valid
1154    architecture names.  Since architectures are registered during the
1155    _initialize phase this function only returns useful information
1156    once initialization has been completed.  */
1157
1158 extern const char **gdbarch_printable_names (void);
1159
1160
1161 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1162    matches the information provided by INFO.  */
1163
1164 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1165
1166
1167 /* Helper function.  Create a preliminary ``struct gdbarch''.  Perform
1168    basic initialization using values obtained from the INFO and TDEP
1169    parameters.  set_gdbarch_*() functions are called to complete the
1170    initialization of the object.  */
1171
1172 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1173
1174
1175 /* Helper function.  Free a partially-constructed ``struct gdbarch''.
1176    It is assumed that the caller freeds the ``struct
1177    gdbarch_tdep''.  */
1178
1179 extern void gdbarch_free (struct gdbarch *);
1180
1181
1182 /* Helper function.  Allocate memory from the ``struct gdbarch''
1183    obstack.  The memory is freed when the corresponding architecture
1184    is also freed.  */
1185
1186 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1187 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1188 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1189
1190
1191 /* Helper function.  Force an update of the current architecture.
1192
1193    The actual architecture selected is determined by INFO, ``(gdb) set
1194    architecture'' et.al., the existing architecture and BFD's default
1195    architecture.  INFO should be initialized to zero and then selected
1196    fields should be updated.
1197
1198    Returns non-zero if the update succeeds.  */
1199
1200 extern int gdbarch_update_p (struct gdbarch_info info);
1201
1202
1203 /* Helper function.  Find an architecture matching info.
1204
1205    INFO should be initialized using gdbarch_info_init, relevant fields
1206    set, and then finished using gdbarch_info_fill.
1207
1208    Returns the corresponding architecture, or NULL if no matching
1209    architecture was found.  */
1210
1211 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1212
1213
1214 /* Helper function.  Set the global "target_gdbarch" to "gdbarch".
1215
1216    FIXME: kettenis/20031124: Of the functions that follow, only
1217    gdbarch_from_bfd is supposed to survive.  The others will
1218    dissappear since in the future GDB will (hopefully) be truly
1219    multi-arch.  However, for now we're still stuck with the concept of
1220    a single active architecture.  */
1221
1222 extern void deprecated_target_gdbarch_select_hack (struct gdbarch *gdbarch);
1223
1224
1225 /* Register per-architecture data-pointer.
1226
1227    Reserve space for a per-architecture data-pointer.  An identifier
1228    for the reserved data-pointer is returned.  That identifer should
1229    be saved in a local static variable.
1230
1231    Memory for the per-architecture data shall be allocated using
1232    gdbarch_obstack_zalloc.  That memory will be deleted when the
1233    corresponding architecture object is deleted.
1234
1235    When a previously created architecture is re-selected, the
1236    per-architecture data-pointer for that previous architecture is
1237    restored.  INIT() is not re-called.
1238
1239    Multiple registrarants for any architecture are allowed (and
1240    strongly encouraged).  */
1241
1242 struct gdbarch_data;
1243
1244 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1245 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1246 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1247 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1248 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1249                                          struct gdbarch_data *data,
1250                                          void *pointer);
1251
1252 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1253
1254
1255 /* Set the dynamic target-system-dependent parameters (architecture,
1256    byte-order, ...) using information found in the BFD.  */
1257
1258 extern void set_gdbarch_from_file (bfd *);
1259
1260
1261 /* Initialize the current architecture to the "first" one we find on
1262    our list.  */
1263
1264 extern void initialize_current_architecture (void);
1265
1266 /* gdbarch trace variable */
1267 extern int gdbarch_debug;
1268
1269 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1270
1271 #endif