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