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, 2007
   6    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
  56 extern struct gdbarch *current_gdbarch;
  57 extern struct gdbarch *target_gdbarch;
  58
  59
  60 /* The following are pre-initialized by GDBARCH. */
  61
  62 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
  63 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */
  64
  65 extern int gdbarch_byte_order (struct gdbarch *gdbarch);
  66 /* set_gdbarch_byte_order() - not applicable - pre-initialized. */
  67
  68 extern int gdbarch_byte_order_for_code (struct gdbarch *gdbarch);
  69 /* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized. */
  70
  71 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
  72 /* set_gdbarch_osabi() - not applicable - pre-initialized. */
  73
  74 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
  75 /* set_gdbarch_target_desc() - not applicable - pre-initialized. */
  76
  77
  78 /* The following are initialized by the target dependent code. */
  79
  80 /* The bit byte-order has to do just with numbering of bits in debugging symbols
  81    and such.  Conceptually, it's quite separate from byte/word byte order. */
  82
  83 extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
  84 extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);
  85
  86 /* Number of bits in a char or unsigned char for the target machine.
  87    Just like CHAR_BIT in <limits.h> but describes the target machine.
  88    v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
  89
  90    Number of bits in a short or unsigned short for the target machine. */
  91
  92 extern int gdbarch_short_bit (struct gdbarch *gdbarch);
  93 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
  94
  95 /* Number of bits in an int or unsigned int for the target machine. */
  96
  97 extern int gdbarch_int_bit (struct gdbarch *gdbarch);
  98 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
  99
 100 /* Number of bits in a long or unsigned long for the target machine. */
 101
 102 extern int gdbarch_long_bit (struct gdbarch *gdbarch);
 103 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
 104
 105 /* Number of bits in a long long or unsigned long long for the target
 106    machine. */
 107
 108 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
 109 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
 110
 111 /* The ABI default bit-size and format for "float", "double", and "long
 112    double".  These bit/format pairs should eventually be combined into
 113    a single object.  For the moment, just initialize them as a pair.
 114    Each format describes both the big and little endian layouts (if
 115    useful). */
 116
 117 extern int gdbarch_float_bit (struct gdbarch *gdbarch);
 118 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
 119
 120 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
 121 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
 122
 123 extern int gdbarch_double_bit (struct gdbarch *gdbarch);
 124 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
 125
 126 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
 127 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
 128
 129 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
 130 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
 131
 132 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
 133 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
 134
 135 /* For most targets, a pointer on the target and its representation as an
 136    address in GDB have the same size and "look the same".  For such a
 137    target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 138    / addr_bit will be set from it.
 139
 140    If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 141    also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 142    as well.
 143
 144    ptr_bit is the size of a pointer on the target */
 145
 146 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
 147 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
 148
 149 /* addr_bit is the size of a target address as represented in gdb */
 150
 151 extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
 152 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
 153
 154 /* One if `char' acts like `signed char', zero if `unsigned char'. */
 155
 156 extern int gdbarch_char_signed (struct gdbarch *gdbarch);
 157 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
 158
 159 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
 160
 161 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
 162 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
 163 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
 164
 165 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
 166
 167 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
 168 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
 169 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
 170
 171 /* Function for getting target's idea of a frame pointer.  FIXME: GDB's
 172    whole scheme for dealing with "frames" and "frame pointers" needs a
 173    serious shakedown. */
 174
 175 typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 176 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 177 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
 178
 179 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
 180
 181 typedef void (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 182 extern void gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 183 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
 184
 185 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
 186
 187 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 188 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 189 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
 190
 191 extern int gdbarch_num_regs (struct gdbarch *gdbarch);
 192 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
 193
 194 /* This macro gives the number of pseudo-registers that live in the
 195    register namespace but do not get fetched or stored on the target.
 196    These pseudo-registers may be aliases for other registers,
 197    combinations of other registers, or they may be computed by GDB. */
 198
 199 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
 200 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
 201
 202 /* GDB's standard (or well known) register numbers.  These can map onto
 203    a real register or a pseudo (computed) register or not be defined at
 204    all (-1).
 205    gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
 206
 207 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
 208 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
 209
 210 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
 211 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
 212
 213 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
 214 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
 215
 216 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
 217 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
 218
 219 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
 220
 221 typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr);
 222 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
 223 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
 224
 225 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
 226
 227 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr);
 228 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
 229 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
 230
 231 /* Convert from an sdb register number to an internal gdb register number. */
 232
 233 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr);
 234 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
 235 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
 236
 237 /* Provide a default mapping from a DWARF2 register number to a gdb REGNUM. */
 238
 239 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr);
 240 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
 241 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
 242
 243 typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
 244 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
 245 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
 246
 247 /* Return the type of a register specified by the architecture.  Only
 248    the register cache should call this function directly; others should
 249    use "register_type". */
 250
 251 extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
 252
 253 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
 254 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
 255 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
 256
 257 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */
 258
 259 extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch);
 260
 261 typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame);
 262 extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame);
 263 extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);
 264
 265 /* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
 266    deprecated_fp_regnum. */
 267
 268 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
 269 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
 270
 271 /* See gdbint.texinfo.  See infcall.c. */
 272
 273 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
 274
 275 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);
 276 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);
 277 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
 278
 279 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
 280 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
 281
 282 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
 283
 284 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);
 285 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);
 286 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
 287
 288 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 289 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 290 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
 291
 292 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
 293
 294 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 295 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 296 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
 297
 298 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
 299
 300 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 301 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 302 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
 303
 304 /* MAP a GDB RAW register number onto a simulator register number.  See
 305    also include/...-sim.h. */
 306
 307 typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr);
 308 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
 309 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
 310
 311 typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum);
 312 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
 313 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
 314
 315 typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum);
 316 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
 317 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
 318
 319 /* setjmp/longjmp support. */
 320
 321 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
 322
 323 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
 324 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
 325 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
 326
 327 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
 328 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
 329
 330 typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
 331 extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
 332 extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);
 333
 334 typedef void (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
 335 extern void gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
 336 extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);
 337
 338 typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 339 extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 340 extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);
 341
 342 /* Construct a value representing the contents of register REGNUM in
 343    frame FRAME, interpreted as type TYPE.  The routine needs to
 344    allocate and return a struct value with all value attributes
 345    (but not the value contents) filled in. */
 346
 347 typedef struct value * (gdbarch_value_from_register_ftype) (struct type *type, int regnum, struct frame_info *frame);
 348 extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_info *frame);
 349 extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);
 350
 351 typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct type *type, const gdb_byte *buf);
 352 extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 353 extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);
 354
 355 typedef void (gdbarch_address_to_pointer_ftype) (struct type *type, gdb_byte *buf, CORE_ADDR addr);
 356 extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
 357 extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);
 358
 359 extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);
 360
 361 typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 362 extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 363 extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);
 364
 365 /* Return the return-value convention that will be used by FUNCTYPE
 366    to return a value of type VALTYPE.  FUNCTYPE may be NULL in which
 367    case the return convention is computed based only on VALTYPE.
 368
 369    If READBUF is not NULL, extract the return value and save it in this buffer.
 370
 371    If WRITEBUF is not NULL, it contains a return value which will be
 372    stored into the appropriate register.  This can be used when we want
 373    to force the value returned by a function (see the "return" command
 374    for instance). */
 375
 376 extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
 377
 378 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);
 379 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);
 380 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
 381
 382 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
 383 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 384 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
 385
 386 extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch);
 387
 388 typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
 389 extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 390 extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue);
 391
 392 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
 393 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
 394 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
 395
 396 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 397 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 398 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
 399
 400 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
 401
 402 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 403 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 404 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
 405
 406 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 407 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 408 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
 409
 410 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 411 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 412 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
 413
 414 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
 415 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
 416
 417 /* A function can be addressed by either it's "pointer" (possibly a
 418    descriptor address) or "entry point" (first executable instruction).
 419    The method "convert_from_func_ptr_addr" converting the former to the
 420    latter.  gdbarch_deprecated_function_start_offset is being used to implement
 421    a simplified subset of that functionality - the function's address
 422    corresponds to the "function pointer" and the function's start
 423    corresponds to the "function entry point" - and hence is redundant. */
 424
 425 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
 426 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
 427
 428 /* Return the remote protocol register number associated with this
 429    register.  Normally the identity mapping. */
 430
 431 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
 432 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
 433 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
 434
 435 /* Fetch the target specific address used to represent a load module. */
 436
 437 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
 438
 439 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
 440 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
 441 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
 442
 443 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
 444 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
 445
 446 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
 447
 448 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 449 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
 450 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
 451
 452 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
 453
 454 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 455 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
 456 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
 457
 458 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 459    frame-base.  Enable frame-base before frame-unwind. */
 460
 461 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
 462
 463 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
 464 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
 465 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
 466
 467 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
 468
 469 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
 470 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
 471 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
 472
 473 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
 474 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
 475 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
 476
 477 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
 478 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
 479
 480 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 481 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 482 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
 483
 484 /* On some machines there are bits in addresses which are not really
 485    part of the address, but are used by the kernel, the hardware, etc.
 486    for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 487    we get a "real" address such as one would find in a symbol table.
 488    This is used only for addresses of instructions, and even then I'm
 489    not sure it's used in all contexts.  It exists to deal with there
 490    being a few stray bits in the PC which would mislead us, not as some
 491    sort of generic thing to handle alignment or segmentation (it's
 492    possible it should be in TARGET_READ_PC instead). */
 493
 494 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 495 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
 496 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
 497
 498 /* It is not at all clear why gdbarch_smash_text_address is not folded into
 499    gdbarch_addr_bits_remove. */
 500
 501 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 502 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr);
 503 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address);
 504
 505 /* FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 506    indicates if the target needs software single step.  An ISA method to
 507    implement it.
 508
 509    FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 510    breakpoints using the breakpoint system instead of blatting memory directly
 511    (as with rs6000).
 512
 513    FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 514    target can single step.  If not, then implement single step using breakpoints.
 515
 516    A return value of 1 means that the software_single_step breakpoints
 517    were inserted; 0 means they were not. */
 518
 519 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
 520
 521 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
 522 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
 523 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
 524
 525 /* Return non-zero if the processor is executing a delay slot and a
 526    further single-step is needed before the instruction finishes. */
 527
 528 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
 529
 530 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
 531 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
 532 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
 533
 534 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 535    disassembler.  Perhaps objdump can handle it? */
 536
 537 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
 538 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
 539 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
 540
 541 typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
 542 extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
 543 extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);
 544
 545 /* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
 546    evaluates non-zero, this is the address where the debugger will place
 547    a step-resume breakpoint to get us past the dynamic linker. */
 548
 549 typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
 550 extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
 551 extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);
 552
 553 /* Some systems also have trampoline code for returning from shared libs. */
 554
 555 typedef int (gdbarch_in_solib_return_trampoline_ftype) (CORE_ADDR pc, char *name);
 556 extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
 557 extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
 558
 559 /* A target might have problems with watchpoints as soon as the stack
 560    frame of the current function has been destroyed.  This mostly happens
 561    as the first action in a funtion's epilogue.  in_function_epilogue_p()
 562    is defined to return a non-zero value if either the given addr is one
 563    instruction after the stack destroying instruction up to the trailing
 564    return instruction or if we can figure out that the stack frame has
 565    already been invalidated regardless of the value of addr.  Targets
 566    which don't suffer from that problem could just let this functionality
 567    untouched. */
 568
 569 typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 570 extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr);
 571 extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p);
 572
 573 /* Given a vector of command-line arguments, return a newly allocated
 574    string which, when passed to the create_inferior function, will be
 575    parsed (on Unix systems, by the shell) to yield the same vector.
 576    This function should call error() if the argument vector is not
 577    representable for this target or if this target does not support
 578    command-line arguments.
 579    ARGC is the number of elements in the vector.
 580    ARGV is an array of strings, one per argument. */
 581
 582 typedef char * (gdbarch_construct_inferior_arguments_ftype) (struct gdbarch *gdbarch, int argc, char **argv);
 583 extern char * gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, int argc, char **argv);
 584 extern void set_gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, gdbarch_construct_inferior_arguments_ftype *construct_inferior_arguments);
 585
 586 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
 587 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
 588 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
 589
 590 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
 591 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
 592 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
 593
 594 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
 595 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
 596
 597 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
 598 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
 599
 600 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
 601
 602 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
 603 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
 604 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
 605
 606 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
 607
 608 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
 609 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
 610 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);
 611
 612 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
 613
 614 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 615 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 616 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);
 617
 618 /* Is a register in a group */
 619
 620 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 621 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 622 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
 623
 624 /* Fetch the pointer to the ith function argument. */
 625
 626 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
 627
 628 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
 629 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
 630 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
 631
 632 /* Return the appropriate register set for a core file section with
 633    name SECT_NAME and size SECT_SIZE. */
 634
 635 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch);
 636
 637 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 638 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 639 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section);
 640
 641 /* Supported register notes in a core file. */
 642
 643 extern struct core_regset_section * gdbarch_core_regset_sections (struct gdbarch *gdbarch);
 644 extern void set_gdbarch_core_regset_sections (struct gdbarch *gdbarch, struct core_regset_section * core_regset_sections);
 645
 646 /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 647    core file into buffer READBUF with length LEN. */
 648
 649 extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);
 650
 651 typedef LONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 652 extern LONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 653 extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);
 654
 655 /* If the elements of C++ vtables are in-place function descriptors rather
 656    than normal function pointers (which may point to code or a descriptor),
 657    set this to one. */
 658
 659 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
 660 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
 661
 662 /* Set if the least significant bit of the delta is used instead of the least
 663    significant bit of the pfn for pointers to virtual member functions. */
 664
 665 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
 666 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
 667
 668 /* Advance PC to next instruction in order to skip a permanent breakpoint. */
 669
 670 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch);
 671
 672 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
 673 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
 674 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
 675
 676 /* The maximum length of an instruction on this architecture. */
 677
 678 extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch);
 679
 680 extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch);
 681 extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length);
 682
 683 /* Copy the instruction at FROM to TO, and make any adjustments
 684    necessary to single-step it at that address.
 685
 686    REGS holds the state the thread's registers will have before
 687    executing the copied instruction; the PC in REGS will refer to FROM,
 688    not the copy at TO.  The caller should update it to point at TO later.
 689
 690    Return a pointer to data of the architecture's choice to be passed
 691    to gdbarch_displaced_step_fixup.  Or, return NULL to indicate that
 692    the instruction's effects have been completely simulated, with the
 693    resulting state written back to REGS.
 694
 695    For a general explanation of displaced stepping and how GDB uses it,
 696    see the comments in infrun.c.
 697
 698    The TO area is only guaranteed to have space for
 699    gdbarch_max_insn_length (arch) bytes, so this function must not
 700    write more bytes than that to that area.
 701
 702    If you do not provide this function, GDB assumes that the
 703    architecture does not support displaced stepping.
 704
 705    If your architecture doesn't need to adjust instructions before
 706    single-stepping them, consider using simple_displaced_step_copy_insn
 707    here. */
 708
 709 extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch);
 710
 711 typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 712 extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 713 extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);
 714
 715 /* Fix up the state resulting from successfully single-stepping a
 716    displaced instruction, to give the result we would have gotten from
 717    stepping the instruction in its original location.
 718
 719    REGS is the register state resulting from single-stepping the
 720    displaced instruction.
 721
 722    CLOSURE is the result from the matching call to
 723    gdbarch_displaced_step_copy_insn.
 724
 725    If you provide gdbarch_displaced_step_copy_insn.but not this
 726    function, then GDB assumes that no fixup is needed after
 727    single-stepping the instruction.
 728
 729    For a general explanation of displaced stepping and how GDB uses it,
 730    see the comments in infrun.c. */
 731
 732 extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch);
 733
 734 typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 735 extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
 736 extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup);
 737
 738 /* Free a closure returned by gdbarch_displaced_step_copy_insn.
 739
 740    If you provide gdbarch_displaced_step_copy_insn, you must provide
 741    this function as well.
 742
 743    If your architecture uses closures that don't need to be freed, then
 744    you can use simple_displaced_step_free_closure here.
 745
 746    For a general explanation of displaced stepping and how GDB uses it,
 747    see the comments in infrun.c. */
 748
 749 typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 750 extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
 751 extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure);
 752
 753 /* Return the address of an appropriate place to put displaced
 754    instructions while we step over them.  There need only be one such
 755    place, since we're only stepping one thread over a breakpoint at a
 756    time.
 757
 758    For a general explanation of displaced stepping and how GDB uses it,
 759    see the comments in infrun.c. */
 760
 761 typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch);
 762 extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch);
 763 extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location);
 764
 765 /* Refresh overlay mapped state for section OSECT. */
 766
 767 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
 768
 769 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
 770 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
 771 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
 772
 773 extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);
 774
 775 typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 776 extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 777 extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);
 778
 779 /* Handle special encoding of static variables in stabs debug info. */
 780
 781 extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);
 782
 783 typedef char * (gdbarch_static_transform_name_ftype) (char *name);
 784 extern char * gdbarch_static_transform_name (struct gdbarch *gdbarch, char *name);
 785 extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);
 786
 787 /* Set if the address in N_SO or N_FUN stabs may be zero. */
 788
 789 extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
 790 extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);
 791
 792 /* Signal translation: translate inferior's signal (host's) number into
 793    GDB's representation. */
 794
 795 typedef enum target_signal (gdbarch_target_signal_from_host_ftype) (struct gdbarch *gdbarch, int signo);
 796 extern enum target_signal gdbarch_target_signal_from_host (struct gdbarch *gdbarch, int signo);
 797 extern void set_gdbarch_target_signal_from_host (struct gdbarch *gdbarch, gdbarch_target_signal_from_host_ftype *target_signal_from_host);
 798
 799 /* Signal translation: translate GDB's signal number into inferior's host
 800    signal number. */
 801
 802 typedef int (gdbarch_target_signal_to_host_ftype) (struct gdbarch *gdbarch, enum target_signal ts);
 803 extern int gdbarch_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts);
 804 extern void set_gdbarch_target_signal_to_host (struct gdbarch *gdbarch, gdbarch_target_signal_to_host_ftype *target_signal_to_host);
 805
 806 /* Record architecture-specific information from the symbol table. */
 807
 808 extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);
 809
 810 typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
 811 extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
 812 extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);
 813
 814 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 815
 816
 817 /* Mechanism for co-ordinating the selection of a specific
 818    architecture.
 819
 820    GDB targets (*-tdep.c) can register an interest in a specific
 821    architecture.  Other GDB components can register a need to maintain
 822    per-architecture data.
 823
 824    The mechanisms below ensures that there is only a loose connection
 825    between the set-architecture command and the various GDB
 826    components.  Each component can independently register their need
 827    to maintain architecture specific data with gdbarch.
 828
 829    Pragmatics:
 830
 831    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 832    didn't scale.
 833
 834    The more traditional mega-struct containing architecture specific
 835    data for all the various GDB components was also considered.  Since
 836    GDB is built from a variable number of (fairly independent)
 837    components it was determined that the global aproach was not
 838    applicable. */
 839
 840
 841 /* Register a new architectural family with GDB.
 842
 843    Register support for the specified ARCHITECTURE with GDB.  When
 844    gdbarch determines that the specified architecture has been
 845    selected, the corresponding INIT function is called.
 846
 847    --
 848
 849    The INIT function takes two parameters: INFO which contains the
 850    information available to gdbarch about the (possibly new)
 851    architecture; ARCHES which is a list of the previously created
 852    ``struct gdbarch'' for this architecture.
 853
 854    The INFO parameter is, as far as possible, be pre-initialized with
 855    information obtained from INFO.ABFD or the global defaults.
 856
 857    The ARCHES parameter is a linked list (sorted most recently used)
 858    of all the previously created architures for this architecture
 859    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 860    values from the previously selected architecture for this
 861    architecture family.  The global ``current_gdbarch'' shall not be
 862    used.
 863
 864    The INIT function shall return any of: NULL - indicating that it
 865    doesn't recognize the selected architecture; an existing ``struct
 866    gdbarch'' from the ARCHES list - indicating that the new
 867    architecture is just a synonym for an earlier architecture (see
 868    gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
 869    - that describes the selected architecture (see gdbarch_alloc()).
 870
 871    The DUMP_TDEP function shall print out all target specific values.
 872    Care should be taken to ensure that the function works in both the
 873    multi-arch and non- multi-arch cases. */
 874
 875 struct gdbarch_list
 876 {
 877   struct gdbarch *gdbarch;
 878   struct gdbarch_list *next;
 879 };
 880
 881 struct gdbarch_info
 882 {
 883   /* Use default: NULL (ZERO). */
 884   const struct bfd_arch_info *bfd_arch_info;
 885
 886   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
 887   int byte_order;
 888
 889   int byte_order_for_code;
 890
 891   /* Use default: NULL (ZERO). */
 892   bfd *abfd;
 893
 894   /* Use default: NULL (ZERO). */
 895   struct gdbarch_tdep_info *tdep_info;
 896
 897   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
 898   enum gdb_osabi osabi;
 899
 900   /* Use default: NULL (ZERO).  */
 901   const struct target_desc *target_desc;
 902 };
 903
 904 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 905 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 906
 907 /* DEPRECATED - use gdbarch_register() */
 908 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 909
 910 extern void gdbarch_register (enum bfd_architecture architecture,
 911                               gdbarch_init_ftype *,
 912                               gdbarch_dump_tdep_ftype *);
 913
 914
 915 /* Return a freshly allocated, NULL terminated, array of the valid
 916    architecture names.  Since architectures are registered during the
 917    _initialize phase this function only returns useful information
 918    once initialization has been completed. */
 919
 920 extern const char **gdbarch_printable_names (void);
 921
 922
 923 /* Helper function.  Search the list of ARCHES for a GDBARCH that
 924    matches the information provided by INFO. */
 925
 926 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
 927
 928
 929 /* Helper function.  Create a preliminary ``struct gdbarch''.  Perform
 930    basic initialization using values obtained from the INFO and TDEP
 931    parameters.  set_gdbarch_*() functions are called to complete the
 932    initialization of the object. */
 933
 934 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
 935
 936
 937 /* Helper function.  Free a partially-constructed ``struct gdbarch''.
 938    It is assumed that the caller freeds the ``struct
 939    gdbarch_tdep''. */
 940
 941 extern void gdbarch_free (struct gdbarch *);
 942
 943
 944 /* Helper function.  Allocate memory from the ``struct gdbarch''
 945    obstack.  The memory is freed when the corresponding architecture
 946    is also freed.  */
 947
 948 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
 949 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
 950 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
 951
 952
 953 /* Helper function. Force an update of the current architecture.
 954
 955    The actual architecture selected is determined by INFO, ``(gdb) set
 956    architecture'' et.al., the existing architecture and BFD's default
 957    architecture.  INFO should be initialized to zero and then selected
 958    fields should be updated.
 959
 960    Returns non-zero if the update succeeds */
 961
 962 extern int gdbarch_update_p (struct gdbarch_info info);
 963
 964
 965 /* Helper function.  Find an architecture matching info.
 966
 967    INFO should be initialized using gdbarch_info_init, relevant fields
 968    set, and then finished using gdbarch_info_fill.
 969
 970    Returns the corresponding architecture, or NULL if no matching
 971    architecture was found.  "current_gdbarch" is not updated.  */
 972
 973 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
 974
 975
 976 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
 977
 978    FIXME: kettenis/20031124: Of the functions that follow, only
 979    gdbarch_from_bfd is supposed to survive.  The others will
 980    dissappear since in the future GDB will (hopefully) be truly
 981    multi-arch.  However, for now we're still stuck with the concept of
 982    a single active architecture.  */
 983
 984 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
 985
 986
 987 /* Register per-architecture data-pointer.
 988
 989    Reserve space for a per-architecture data-pointer.  An identifier
 990    for the reserved data-pointer is returned.  That identifer should
 991    be saved in a local static variable.
 992
 993    Memory for the per-architecture data shall be allocated using
 994    gdbarch_obstack_zalloc.  That memory will be deleted when the
 995    corresponding architecture object is deleted.
 996
 997    When a previously created architecture is re-selected, the
 998    per-architecture data-pointer for that previous architecture is
 999    restored.  INIT() is not re-called.
1000
1001    Multiple registrarants for any architecture are allowed (and
1002    strongly encouraged).  */
1003
1004 struct gdbarch_data;
1005
1006 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1007 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1008 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1009 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1010 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1011                                          struct gdbarch_data *data,
1012                                          void *pointer);
1013
1014 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1015
1016
1017 /* Set the dynamic target-system-dependent parameters (architecture,
1018    byte-order, ...) using information found in the BFD */
1019
1020 extern void set_gdbarch_from_file (bfd *);
1021
1022
1023 /* Initialize the current architecture to the "first" one we find on
1024    our list.  */
1025
1026 extern void initialize_current_architecture (void);
1027
1028 /* gdbarch trace variable */
1029 extern int gdbarch_debug;
1030
1031 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1032
1033 #endif