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    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 2 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, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23    Boston, MA 02110-1301, USA.  */
  24
  25 /* This file was created with the aid of ``gdbarch.sh''.
  26
  27    The Bourne shell script ``gdbarch.sh'' creates the files
  28    ``new-gdbarch.c'' and ``new-gdbarch.h and then compares them
  29    against the existing ``gdbarch.[hc]''.  Any differences found
  30    being reported.
  31
  32    If editing this file, please also run gdbarch.sh and merge any
  33    changes into that script. Conversely, when making sweeping changes
  34    to this file, modifying gdbarch.sh and using its output may prove
  35    easier. */
  36
  37 #ifndef GDBARCH_H
  38 #define GDBARCH_H
  39
  40 struct floatformat;
  41 struct ui_file;
  42 struct frame_info;
  43 struct value;
  44 struct objfile;
  45 struct obj_section;
  46 struct minimal_symbol;
  47 struct regcache;
  48 struct reggroup;
  49 struct regset;
  50 struct disassemble_info;
  51 struct target_ops;
  52 struct obstack;
  53 struct bp_target_info;
  54 struct target_desc;
  55
  56 extern struct gdbarch *current_gdbarch;
  57
  58
  59 /* The following are pre-initialized by GDBARCH. */
  60
  61 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
  62 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */
  63
  64 extern int gdbarch_byte_order (struct gdbarch *gdbarch);
  65 /* set_gdbarch_byte_order() - not applicable - pre-initialized. */
  66
  67 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
  68 /* set_gdbarch_osabi() - not applicable - pre-initialized. */
  69
  70 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
  71 /* set_gdbarch_target_desc() - not applicable - pre-initialized. */
  72
  73
  74 /* The following are initialized by the target dependent code. */
  75
  76 /* Number of bits in a char or unsigned char for the target machine.
  77    Just like CHAR_BIT in <limits.h> but describes the target machine.
  78    v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
  79
  80    Number of bits in a short or unsigned short for the target machine. */
  81
  82 extern int gdbarch_short_bit (struct gdbarch *gdbarch);
  83 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
  84
  85 /* Number of bits in an int or unsigned int for the target machine. */
  86
  87 extern int gdbarch_int_bit (struct gdbarch *gdbarch);
  88 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
  89
  90 /* Number of bits in a long or unsigned long for the target machine. */
  91
  92 extern int gdbarch_long_bit (struct gdbarch *gdbarch);
  93 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
  94
  95 /* Number of bits in a long long or unsigned long long for the target
  96    machine. */
  97
  98 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
  99 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
 100
 101 /* The ABI default bit-size and format for "float", "double", and "long
 102    double".  These bit/format pairs should eventually be combined into
 103    a single object.  For the moment, just initialize them as a pair.
 104    Each format describes both the big and little endian layouts (if
 105    useful). */
 106
 107 extern int gdbarch_float_bit (struct gdbarch *gdbarch);
 108 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
 109
 110 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
 111 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
 112
 113 extern int gdbarch_double_bit (struct gdbarch *gdbarch);
 114 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
 115
 116 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
 117 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
 118
 119 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
 120 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
 121
 122 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
 123 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
 124
 125 /* For most targets, a pointer on the target and its representation as an
 126    address in GDB have the same size and "look the same".  For such a
 127    target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 128    / addr_bit will be set from it.
 129
 130    If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 131    also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 132    as well.
 133
 134    ptr_bit is the size of a pointer on the target */
 135
 136 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
 137 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
 138
 139 /* addr_bit is the size of a target address as represented in gdb */
 140
 141 extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
 142 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
 143
 144 /* One if `char' acts like `signed char', zero if `unsigned char'. */
 145
 146 extern int gdbarch_char_signed (struct gdbarch *gdbarch);
 147 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
 148
 149 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
 150
 151 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
 152 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
 153 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
 154
 155 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
 156
 157 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
 158 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
 159 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
 160
 161 /* Function for getting target's idea of a frame pointer.  FIXME: GDB's
 162    whole scheme for dealing with "frames" and "frame pointers" needs a
 163    serious shakedown. */
 164
 165 typedef void (gdbarch_virtual_frame_pointer_ftype) (CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 166 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 167 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
 168
 169 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
 170
 171 typedef void (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 172 extern void gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 173 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
 174
 175 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
 176
 177 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 178 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 179 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
 180
 181 extern int gdbarch_num_regs (struct gdbarch *gdbarch);
 182 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
 183
 184 /* This macro gives the number of pseudo-registers that live in the
 185    register namespace but do not get fetched or stored on the target.
 186    These pseudo-registers may be aliases for other registers,
 187    combinations of other registers, or they may be computed by GDB. */
 188
 189 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
 190 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
 191
 192 /* GDB's standard (or well known) register numbers.  These can map onto
 193    a real register or a pseudo (computed) register or not be defined at
 194    all (-1).
 195    gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
 196
 197 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
 198 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
 199
 200 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
 201 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
 202
 203 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
 204 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
 205
 206 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
 207 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
 208
 209 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
 210
 211 typedef int (gdbarch_stab_reg_to_regnum_ftype) (int stab_regnr);
 212 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
 213 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
 214
 215 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
 216
 217 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (int ecoff_regnr);
 218 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
 219 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
 220
 221 /* Provide a default mapping from a DWARF register number to a gdb REGNUM. */
 222
 223 typedef int (gdbarch_dwarf_reg_to_regnum_ftype) (int dwarf_regnr);
 224 extern int gdbarch_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int dwarf_regnr);
 225 extern void set_gdbarch_dwarf_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf_reg_to_regnum_ftype *dwarf_reg_to_regnum);
 226
 227 /* Convert from an sdb register number to an internal gdb register number. */
 228
 229 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (int sdb_regnr);
 230 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
 231 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
 232
 233 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (int dwarf2_regnr);
 234 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
 235 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
 236
 237 typedef const char * (gdbarch_register_name_ftype) (int regnr);
 238 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
 239 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
 240
 241 /* Return the type of a register specified by the architecture.  Only
 242    the register cache should call this function directly; others should
 243    use "register_type". */
 244
 245 extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
 246
 247 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
 248 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
 249 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
 250
 251 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */
 252
 253 extern int gdbarch_unwind_dummy_id_p (struct gdbarch *gdbarch);
 254
 255 typedef struct frame_id (gdbarch_unwind_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *info);
 256 extern struct frame_id gdbarch_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *info);
 257 extern void set_gdbarch_unwind_dummy_id (struct gdbarch *gdbarch, gdbarch_unwind_dummy_id_ftype *unwind_dummy_id);
 258
 259 /* Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
 260    deprecated_fp_regnum. */
 261
 262 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
 263 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
 264
 265 /* See gdbint.texinfo.  See infcall.c. */
 266
 267 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
 268
 269 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);
 270 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);
 271 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
 272
 273 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
 274 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
 275
 276 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
 277
 278 typedef CORE_ADDR (gdbarch_push_dummy_code_ftype) (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
 279 extern CORE_ADDR gdbarch_push_dummy_code (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
 280 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
 281
 282 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 283 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 284 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
 285
 286 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
 287
 288 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 289 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 290 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
 291
 292 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
 293
 294 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 295 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 296 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
 297
 298 /* MAP a GDB RAW register number onto a simulator register number.  See
 299    also include/...-sim.h. */
 300
 301 typedef int (gdbarch_register_sim_regno_ftype) (int reg_nr);
 302 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
 303 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
 304
 305 typedef int (gdbarch_cannot_fetch_register_ftype) (int regnum);
 306 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
 307 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
 308
 309 typedef int (gdbarch_cannot_store_register_ftype) (int regnum);
 310 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
 311 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
 312
 313 /* setjmp/longjmp support. */
 314
 315 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
 316
 317 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
 318 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
 319 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
 320
 321 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
 322 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
 323 #if !defined (GDB_TM_FILE) && defined (BELIEVE_PCC_PROMOTION)
 324 #error "Non multi-arch definition of BELIEVE_PCC_PROMOTION"
 325 #endif
 326 #if !defined (BELIEVE_PCC_PROMOTION)
 327 #define BELIEVE_PCC_PROMOTION (gdbarch_believe_pcc_promotion (current_gdbarch))
 328 #endif
 329
 330 typedef int (gdbarch_convert_register_p_ftype) (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 /* It has been suggested that this, well actually its predecessor,
 366    should take the type/value of the function to be called and not the
 367    return type.  This is left as an exercise for the reader.
 368    NOTE: cagney/2004-06-13: The function stack.c:return_command uses
 369    the predicate with default hack to avoid calling store_return_value
 370    (via legacy_return_value), when a small struct is involved. */
 371
 372 extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
 373
 374 typedef enum return_value_convention (gdbarch_return_value_ftype) (struct gdbarch *gdbarch, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
 375 extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
 376 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
 377
 378 /* The deprecated methods extract_return_value, store_return_value,
 379    DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS and
 380    deprecated_use_struct_convention have all been folded into
 381    RETURN_VALUE. */
 382
 383 typedef void (gdbarch_extract_return_value_ftype) (struct type *type, struct regcache *regcache, gdb_byte *valbuf);
 384 extern void gdbarch_extract_return_value (struct gdbarch *gdbarch, struct type *type, struct regcache *regcache, gdb_byte *valbuf);
 385 extern void set_gdbarch_extract_return_value (struct gdbarch *gdbarch, gdbarch_extract_return_value_ftype *extract_return_value);
 386
 387 typedef void (gdbarch_store_return_value_ftype) (struct type *type, struct regcache *regcache, const gdb_byte *valbuf);
 388 extern void gdbarch_store_return_value (struct gdbarch *gdbarch, struct type *type, struct regcache *regcache, const gdb_byte *valbuf);
 389 extern void set_gdbarch_store_return_value (struct gdbarch *gdbarch, gdbarch_store_return_value_ftype *store_return_value);
 390
 391 typedef int (gdbarch_deprecated_use_struct_convention_ftype) (int gcc_p, struct type *value_type);
 392 extern int gdbarch_deprecated_use_struct_convention (struct gdbarch *gdbarch, int gcc_p, struct type *value_type);
 393 extern void set_gdbarch_deprecated_use_struct_convention (struct gdbarch *gdbarch, gdbarch_deprecated_use_struct_convention_ftype *deprecated_use_struct_convention);
 394
 395 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (CORE_ADDR ip);
 396 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 397 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
 398
 399 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
 400 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
 401 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
 402
 403 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (CORE_ADDR *pcptr, int *lenptr);
 404 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 405 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
 406
 407 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
 408
 409 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 410 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 411 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
 412
 413 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct bp_target_info *bp_tgt);
 414 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 415 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
 416
 417 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct bp_target_info *bp_tgt);
 418 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 419 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
 420
 421 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
 422 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
 423
 424 /* A function can be addressed by either it's "pointer" (possibly a
 425    descriptor address) or "entry point" (first executable instruction).
 426    The method "convert_from_func_ptr_addr" converting the former to the
 427    latter.  gdbarch_deprecated_function_start_offset is being used to implement
 428    a simplified subset of that functionality - the function's address
 429    corresponds to the "function pointer" and the function's start
 430    corresponds to the "function entry point" - and hence is redundant. */
 431
 432 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
 433 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
 434
 435 /* Return the remote protocol register number associated with this
 436    register.  Normally the identity mapping. */
 437
 438 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
 439 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
 440 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
 441
 442 /* Fetch the target specific address used to represent a load module. */
 443
 444 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
 445
 446 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
 447 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
 448 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
 449
 450 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
 451 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
 452
 453 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
 454
 455 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 456 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
 457 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
 458
 459 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
 460
 461 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 462 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
 463 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
 464
 465 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 466    frame-base.  Enable frame-base before frame-unwind. */
 467
 468 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
 469
 470 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
 471 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
 472 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
 473
 474 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
 475
 476 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
 477 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
 478 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
 479
 480 /* deprecated_reg_struct_has_addr has been replaced by
 481    stabs_argument_has_addr. */
 482
 483 extern int gdbarch_deprecated_reg_struct_has_addr_p (struct gdbarch *gdbarch);
 484
 485 typedef int (gdbarch_deprecated_reg_struct_has_addr_ftype) (int gcc_p, struct type *type);
 486 extern int gdbarch_deprecated_reg_struct_has_addr (struct gdbarch *gdbarch, int gcc_p, struct type *type);
 487 extern void set_gdbarch_deprecated_reg_struct_has_addr (struct gdbarch *gdbarch, gdbarch_deprecated_reg_struct_has_addr_ftype *deprecated_reg_struct_has_addr);
 488
 489 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
 490 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
 491 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
 492
 493 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
 494 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
 495
 496 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 497 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 498 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
 499
 500 /* On some machines there are bits in addresses which are not really
 501    part of the address, but are used by the kernel, the hardware, etc.
 502    for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 503    we get a "real" address such as one would find in a symbol table.
 504    This is used only for addresses of instructions, and even then I'm
 505    not sure it's used in all contexts.  It exists to deal with there
 506    being a few stray bits in the PC which would mislead us, not as some
 507    sort of generic thing to handle alignment or segmentation (it's
 508    possible it should be in TARGET_READ_PC instead). */
 509
 510 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (CORE_ADDR addr);
 511 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
 512 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
 513
 514 /* It is not at all clear why gdbarch_smash_text_address is not folded into
 515    gdbarch_addr_bits_remove. */
 516
 517 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (CORE_ADDR addr);
 518 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr);
 519 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address);
 520
 521 /* FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 522    indicates if the target needs software single step.  An ISA method to
 523    implement it.
 524
 525    FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 526    breakpoints using the breakpoint system instead of blatting memory directly
 527    (as with rs6000).
 528
 529    FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 530    target can single step.  If not, then implement single step using breakpoints.
 531
 532    A return value of 1 means that the software_single_step breakpoints
 533    were inserted; 0 means they were not. */
 534
 535 #if defined (SOFTWARE_SINGLE_STEP)
 536 /* Legacy for systems yet to multi-arch SOFTWARE_SINGLE_STEP */
 537 #if !defined (SOFTWARE_SINGLE_STEP_P)
 538 #define SOFTWARE_SINGLE_STEP_P() (1)
 539 #endif
 540 #endif
 541
 542 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
 543 #if !defined (GDB_TM_FILE) && defined (SOFTWARE_SINGLE_STEP_P)
 544 #error "Non multi-arch definition of SOFTWARE_SINGLE_STEP"
 545 #endif
 546 #if !defined (SOFTWARE_SINGLE_STEP_P)
 547 #define SOFTWARE_SINGLE_STEP_P() (gdbarch_software_single_step_p (current_gdbarch))
 548 #endif
 549
 550 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
 551 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
 552 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
 553 #if !defined (GDB_TM_FILE) && defined (SOFTWARE_SINGLE_STEP)
 554 #error "Non multi-arch definition of SOFTWARE_SINGLE_STEP"
 555 #endif
 556 #if !defined (SOFTWARE_SINGLE_STEP)
 557 #define SOFTWARE_SINGLE_STEP(frame) (gdbarch_software_single_step (current_gdbarch, frame))
 558 #endif
 559
 560 /* Return non-zero if the processor is executing a delay slot and a
 561    further single-step is needed before the instruction finishes. */
 562
 563 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
 564
 565 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
 566 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
 567 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
 568
 569 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 570    disassembler.  Perhaps objdump can handle it? */
 571
 572 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
 573 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
 574 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
 575 #if !defined (GDB_TM_FILE) && defined (TARGET_PRINT_INSN)
 576 #error "Non multi-arch definition of TARGET_PRINT_INSN"
 577 #endif
 578 #if !defined (TARGET_PRINT_INSN)
 579 #define TARGET_PRINT_INSN(vma, info) (gdbarch_print_insn (current_gdbarch, vma, info))
 580 #endif
 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) (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 /* Given a vector of command-line arguments, return a newly allocated
 615    string which, when passed to the create_inferior function, will be
 616    parsed (on Unix systems, by the shell) to yield the same vector.
 617    This function should call error() if the argument vector is not
 618    representable for this target or if this target does not support
 619    command-line arguments.
 620    ARGC is the number of elements in the vector.
 621    ARGV is an array of strings, one per argument. */
 622
 623 typedef char * (gdbarch_construct_inferior_arguments_ftype) (struct gdbarch *gdbarch, int argc, char **argv);
 624 extern char * gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, int argc, char **argv);
 625 extern void set_gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, gdbarch_construct_inferior_arguments_ftype *construct_inferior_arguments);
 626
 627 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
 628 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
 629 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
 630
 631 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
 632 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
 633 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
 634
 635 extern const char * gdbarch_name_of_malloc (struct gdbarch *gdbarch);
 636 extern void set_gdbarch_name_of_malloc (struct gdbarch *gdbarch, const char * name_of_malloc);
 637
 638 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
 639 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
 640
 641 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
 642 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
 643
 644 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
 645
 646 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
 647 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
 648 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
 649
 650 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
 651
 652 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
 653 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
 654 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);
 655
 656 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
 657
 658 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 659 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 660 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);
 661
 662 /* Is a register in a group */
 663
 664 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 665 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 666 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
 667
 668 /* Fetch the pointer to the ith function argument. */
 669
 670 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
 671
 672 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
 673 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
 674 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
 675
 676 /* Return the appropriate register set for a core file section with
 677    name SECT_NAME and size SECT_SIZE. */
 678
 679 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch);
 680
 681 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 682 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 683 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section);
 684
 685 /* If the elements of C++ vtables are in-place function descriptors rather
 686    than normal function pointers (which may point to code or a descriptor),
 687    set this to one. */
 688
 689 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
 690 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
 691
 692 /* Set if the least significant bit of the delta is used instead of the least
 693    significant bit of the pfn for pointers to virtual member functions. */
 694
 695 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
 696 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
 697
 698 /* Advance PC to next instruction in order to skip a permanent breakpoint. */
 699
 700 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch);
 701
 702 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
 703 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
 704 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
 705
 706 /* Refresh overlay mapped state for section OSECT. */
 707
 708 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
 709
 710 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
 711 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
 712 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
 713
 714 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 715
 716
 717 /* Mechanism for co-ordinating the selection of a specific
 718    architecture.
 719
 720    GDB targets (*-tdep.c) can register an interest in a specific
 721    architecture.  Other GDB components can register a need to maintain
 722    per-architecture data.
 723
 724    The mechanisms below ensures that there is only a loose connection
 725    between the set-architecture command and the various GDB
 726    components.  Each component can independently register their need
 727    to maintain architecture specific data with gdbarch.
 728
 729    Pragmatics:
 730
 731    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 732    didn't scale.
 733
 734    The more traditional mega-struct containing architecture specific
 735    data for all the various GDB components was also considered.  Since
 736    GDB is built from a variable number of (fairly independent)
 737    components it was determined that the global aproach was not
 738    applicable. */
 739
 740
 741 /* Register a new architectural family with GDB.
 742
 743    Register support for the specified ARCHITECTURE with GDB.  When
 744    gdbarch determines that the specified architecture has been
 745    selected, the corresponding INIT function is called.
 746
 747    --
 748
 749    The INIT function takes two parameters: INFO which contains the
 750    information available to gdbarch about the (possibly new)
 751    architecture; ARCHES which is a list of the previously created
 752    ``struct gdbarch'' for this architecture.
 753
 754    The INFO parameter is, as far as possible, be pre-initialized with
 755    information obtained from INFO.ABFD or the global defaults.
 756
 757    The ARCHES parameter is a linked list (sorted most recently used)
 758    of all the previously created architures for this architecture
 759    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 760    values from the previously selected architecture for this
 761    architecture family.  The global ``current_gdbarch'' shall not be
 762    used.
 763
 764    The INIT function shall return any of: NULL - indicating that it
 765    doesn't recognize the selected architecture; an existing ``struct
 766    gdbarch'' from the ARCHES list - indicating that the new
 767    architecture is just a synonym for an earlier architecture (see
 768    gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
 769    - that describes the selected architecture (see gdbarch_alloc()).
 770
 771    The DUMP_TDEP function shall print out all target specific values.
 772    Care should be taken to ensure that the function works in both the
 773    multi-arch and non- multi-arch cases. */
 774
 775 struct gdbarch_list
 776 {
 777   struct gdbarch *gdbarch;
 778   struct gdbarch_list *next;
 779 };
 780
 781 struct gdbarch_info
 782 {
 783   /* Use default: NULL (ZERO). */
 784   const struct bfd_arch_info *bfd_arch_info;
 785
 786   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
 787   int byte_order;
 788
 789   /* Use default: NULL (ZERO). */
 790   bfd *abfd;
 791
 792   /* Use default: NULL (ZERO). */
 793   struct gdbarch_tdep_info *tdep_info;
 794
 795   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
 796   enum gdb_osabi osabi;
 797
 798   /* Use default: NULL (ZERO).  */
 799   const struct target_desc *target_desc;
 800 };
 801
 802 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 803 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 804
 805 /* DEPRECATED - use gdbarch_register() */
 806 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 807
 808 extern void gdbarch_register (enum bfd_architecture architecture,
 809                               gdbarch_init_ftype *,
 810                               gdbarch_dump_tdep_ftype *);
 811
 812
 813 /* Return a freshly allocated, NULL terminated, array of the valid
 814    architecture names.  Since architectures are registered during the
 815    _initialize phase this function only returns useful information
 816    once initialization has been completed. */
 817
 818 extern const char **gdbarch_printable_names (void);
 819
 820
 821 /* Helper function.  Search the list of ARCHES for a GDBARCH that
 822    matches the information provided by INFO. */
 823
 824 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
 825
 826
 827 /* Helper function.  Create a preliminary ``struct gdbarch''.  Perform
 828    basic initialization using values obtained from the INFO and TDEP
 829    parameters.  set_gdbarch_*() functions are called to complete the
 830    initialization of the object. */
 831
 832 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
 833
 834
 835 /* Helper function.  Free a partially-constructed ``struct gdbarch''.
 836    It is assumed that the caller freeds the ``struct
 837    gdbarch_tdep''. */
 838
 839 extern void gdbarch_free (struct gdbarch *);
 840
 841
 842 /* Helper function.  Allocate memory from the ``struct gdbarch''
 843    obstack.  The memory is freed when the corresponding architecture
 844    is also freed.  */
 845
 846 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
 847 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
 848 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
 849
 850
 851 /* Helper function. Force an update of the current architecture.
 852
 853    The actual architecture selected is determined by INFO, ``(gdb) set
 854    architecture'' et.al., the existing architecture and BFD's default
 855    architecture.  INFO should be initialized to zero and then selected
 856    fields should be updated.
 857
 858    Returns non-zero if the update succeeds */
 859
 860 extern int gdbarch_update_p (struct gdbarch_info info);
 861
 862
 863 /* Helper function.  Find an architecture matching info.
 864
 865    INFO should be initialized using gdbarch_info_init, relevant fields
 866    set, and then finished using gdbarch_info_fill.
 867
 868    Returns the corresponding architecture, or NULL if no matching
 869    architecture was found.  "current_gdbarch" is not updated.  */
 870
 871 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
 872
 873
 874 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
 875
 876    FIXME: kettenis/20031124: Of the functions that follow, only
 877    gdbarch_from_bfd is supposed to survive.  The others will
 878    dissappear since in the future GDB will (hopefully) be truly
 879    multi-arch.  However, for now we're still stuck with the concept of
 880    a single active architecture.  */
 881
 882 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
 883
 884
 885 /* Register per-architecture data-pointer.
 886
 887    Reserve space for a per-architecture data-pointer.  An identifier
 888    for the reserved data-pointer is returned.  That identifer should
 889    be saved in a local static variable.
 890
 891    Memory for the per-architecture data shall be allocated using
 892    gdbarch_obstack_zalloc.  That memory will be deleted when the
 893    corresponding architecture object is deleted.
 894
 895    When a previously created architecture is re-selected, the
 896    per-architecture data-pointer for that previous architecture is
 897    restored.  INIT() is not re-called.
 898
 899    Multiple registrarants for any architecture are allowed (and
 900    strongly encouraged).  */
 901
 902 struct gdbarch_data;
 903
 904 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
 905 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
 906 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
 907 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
 908 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
 909                                          struct gdbarch_data *data,
 910                                          void *pointer);
 911
 912 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
 913
 914
 915
 916 /* Register per-architecture memory region.
 917
 918    Provide a memory-region swap mechanism.  Per-architecture memory
 919    region are created.  These memory regions are swapped whenever the
 920    architecture is changed.  For a new architecture, the memory region
 921    is initialized with zero (0) and the INIT function is called.
 922
 923    Memory regions are swapped / initialized in the order that they are
 924    registered.  NULL DATA and/or INIT values can be specified.
 925
 926    New code should use gdbarch_data_register_*(). */
 927
 928 typedef void (gdbarch_swap_ftype) (void);
 929 extern void deprecated_register_gdbarch_swap (void *data, unsigned long size, gdbarch_swap_ftype *init);
 930 #define DEPRECATED_REGISTER_GDBARCH_SWAP(VAR) deprecated_register_gdbarch_swap (&(VAR), sizeof ((VAR)), NULL)
 931
 932
 933
 934 /* Set the dynamic target-system-dependent parameters (architecture,
 935    byte-order, ...) using information found in the BFD */
 936
 937 extern void set_gdbarch_from_file (bfd *);
 938
 939
 940 /* Initialize the current architecture to the "first" one we find on
 941    our list.  */
 942
 943 extern void initialize_current_architecture (void);
 944
 945 /* gdbarch trace variable */
 946 extern int gdbarch_debug;
 947
 948 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
 949
 950 #endif