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
  54 extern struct gdbarch *current_gdbarch;
  55
  56
  57 /* The following are pre-initialized by GDBARCH. */
  58
  59 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
  60 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */
  61
  62 extern int gdbarch_byte_order (struct gdbarch *gdbarch);
  63 /* set_gdbarch_byte_order() - not applicable - pre-initialized. */
  64
  65 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
  66 /* set_gdbarch_osabi() - not applicable - pre-initialized. */
  67
  68 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
  69 /* set_gdbarch_target_desc() - not applicable - pre-initialized. */
  70
  71
  72 /* The following are initialized by the target dependent code. */
  73
  74 /* Number of bits in a char or unsigned char for the target machine.
  75    Just like CHAR_BIT in <limits.h> but describes the target machine.
  76    v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
  77
  78    Number of bits in a short or unsigned short for the target machine. */
  79
  80 extern int gdbarch_short_bit (struct gdbarch *gdbarch);
  81 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
  82
  83 /* Number of bits in an int or unsigned int for the target machine. */
  84
  85 extern int gdbarch_int_bit (struct gdbarch *gdbarch);
  86 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
  87
  88 /* Number of bits in a long or unsigned long for the target machine. */
  89
  90 extern int gdbarch_long_bit (struct gdbarch *gdbarch);
  91 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
  92
  93 /* Number of bits in a long long or unsigned long long for the target
  94    machine. */
  95
  96 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
  97 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
  98
  99 /* The ABI default bit-size and format for "float", "double", and "long
 100    double".  These bit/format pairs should eventually be combined into
 101    a single object.  For the moment, just initialize them as a pair.
 102    Each format describes both the big and little endian layouts (if
 103    useful). */
 104
 105 extern int gdbarch_float_bit (struct gdbarch *gdbarch);
 106 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
 107
 108 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
 109 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
 110
 111 extern int gdbarch_double_bit (struct gdbarch *gdbarch);
 112 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
 113
 114 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
 115 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
 116
 117 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
 118 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
 119
 120 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
 121 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
 122
 123 /* For most targets, a pointer on the target and its representation as an
 124    address in GDB have the same size and "look the same".  For such a
 125    target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 126    / addr_bit will be set from it.
 127
 128    If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 129    also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 130    as well.
 131
 132    ptr_bit is the size of a pointer on the target */
 133
 134 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
 135 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
 136
 137 /* addr_bit is the size of a target address as represented in gdb */
 138
 139 extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
 140 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
 141
 142 /* One if `char' acts like `signed char', zero if `unsigned char'. */
 143
 144 extern int gdbarch_char_signed (struct gdbarch *gdbarch);
 145 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
 146
 147 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
 148
 149 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
 150 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
 151 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
 152
 153 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
 154
 155 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
 156 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
 157 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
 158
 159 /* Function for getting target's idea of a frame pointer.  FIXME: GDB's
 160    whole scheme for dealing with "frames" and "frame pointers" needs a
 161    serious shakedown. */
 162
 163 typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 164 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
 165 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
 166
 167 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
 168
 169 typedef void (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 170 extern void gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
 171 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
 172
 173 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
 174
 175 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 176 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
 177 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
 178
 179 extern int gdbarch_num_regs (struct gdbarch *gdbarch);
 180 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
 181
 182 /* This macro gives the number of pseudo-registers that live in the
 183    register namespace but do not get fetched or stored on the target.
 184    These pseudo-registers may be aliases for other registers,
 185    combinations of other registers, or they may be computed by GDB. */
 186
 187 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
 188 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
 189
 190 /* GDB's standard (or well known) register numbers.  These can map onto
 191    a real register or a pseudo (computed) register or not be defined at
 192    all (-1).
 193    gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
 194
 195 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
 196 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
 197
 198 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
 199 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
 200
 201 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
 202 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
 203
 204 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
 205 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
 206
 207 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
 208
 209 typedef int (gdbarch_stab_reg_to_regnum_ftype) (int stab_regnr);
 210 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
 211 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
 212
 213 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
 214
 215 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (int ecoff_regnr);
 216 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
 217 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
 218
 219 /* Provide a default mapping from a DWARF register number to a gdb REGNUM. */
 220
 221 typedef int (gdbarch_dwarf_reg_to_regnum_ftype) (int dwarf_regnr);
 222 extern int gdbarch_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int dwarf_regnr);
 223 extern void set_gdbarch_dwarf_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf_reg_to_regnum_ftype *dwarf_reg_to_regnum);
 224
 225 /* Convert from an sdb register number to an internal gdb register number. */
 226
 227 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (int sdb_regnr);
 228 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
 229 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
 230
 231 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (int dwarf2_regnr);
 232 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
 233 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
 234
 235 typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
 236 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
 237 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
 238
 239 /* Return the type of a register specified by the architecture.  Only
 240    the register cache should call this function directly; others should
 241    use "register_type". */
 242
 243 extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
 244
 245 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
 246 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
 247 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
 248
 249 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */
 250
 251 extern int gdbarch_unwind_dummy_id_p (struct gdbarch *gdbarch);
 252
 253 typedef struct frame_id (gdbarch_unwind_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *info);
 254 extern struct frame_id gdbarch_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *info);
 255 extern void set_gdbarch_unwind_dummy_id (struct gdbarch *gdbarch, gdbarch_unwind_dummy_id_ftype *unwind_dummy_id);
 256
 257 /* Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
 258    deprecated_fp_regnum. */
 259
 260 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
 261 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
 262
 263 /* See gdbint.texinfo.  See infcall.c. */
 264
 265 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
 266
 267 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);
 268 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);
 269 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
 270
 271 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
 272 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
 273
 274 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
 275
 276 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);
 277 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);
 278 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
 279
 280 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 281 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
 282 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
 283
 284 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
 285
 286 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 287 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 288 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
 289
 290 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
 291
 292 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 293 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
 294 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
 295
 296 /* MAP a GDB RAW register number onto a simulator register number.  See
 297    also include/...-sim.h. */
 298
 299 typedef int (gdbarch_register_sim_regno_ftype) (int reg_nr);
 300 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
 301 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
 302
 303 typedef int (gdbarch_cannot_fetch_register_ftype) (int regnum);
 304 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
 305 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
 306
 307 typedef int (gdbarch_cannot_store_register_ftype) (int regnum);
 308 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
 309 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
 310
 311 /* setjmp/longjmp support. */
 312
 313 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
 314
 315 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
 316 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
 317 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
 318
 319 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
 320 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
 321
 322 typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
 323 extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
 324 extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);
 325
 326 typedef void (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
 327 extern void gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
 328 extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);
 329
 330 typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 331 extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
 332 extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);
 333
 334 /* Construct a value representing the contents of register REGNUM in
 335    frame FRAME, interpreted as type TYPE.  The routine needs to
 336    allocate and return a struct value with all value attributes
 337    (but not the value contents) filled in. */
 338
 339 typedef struct value * (gdbarch_value_from_register_ftype) (struct type *type, int regnum, struct frame_info *frame);
 340 extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_info *frame);
 341 extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);
 342
 343 typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct type *type, const gdb_byte *buf);
 344 extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 345 extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);
 346
 347 typedef void (gdbarch_address_to_pointer_ftype) (struct type *type, gdb_byte *buf, CORE_ADDR addr);
 348 extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
 349 extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);
 350
 351 extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);
 352
 353 typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 354 extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
 355 extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);
 356
 357 /* It has been suggested that this, well actually its predecessor,
 358    should take the type/value of the function to be called and not the
 359    return type.  This is left as an exercise for the reader. */
 360
 361 extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
 362
 363 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);
 364 extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
 365 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
 366
 367 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (CORE_ADDR ip);
 368 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
 369 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
 370
 371 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
 372 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
 373 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
 374
 375 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 376 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
 377 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
 378
 379 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
 380
 381 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 382 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
 383 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
 384
 385 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct bp_target_info *bp_tgt);
 386 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 387 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
 388
 389 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct bp_target_info *bp_tgt);
 390 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
 391 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
 392
 393 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
 394 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
 395
 396 /* A function can be addressed by either it's "pointer" (possibly a
 397    descriptor address) or "entry point" (first executable instruction).
 398    The method "convert_from_func_ptr_addr" converting the former to the
 399    latter.  gdbarch_deprecated_function_start_offset is being used to implement
 400    a simplified subset of that functionality - the function's address
 401    corresponds to the "function pointer" and the function's start
 402    corresponds to the "function entry point" - and hence is redundant. */
 403
 404 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
 405 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
 406
 407 /* Return the remote protocol register number associated with this
 408    register.  Normally the identity mapping. */
 409
 410 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
 411 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
 412 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
 413
 414 /* Fetch the target specific address used to represent a load module. */
 415
 416 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
 417
 418 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
 419 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
 420 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
 421
 422 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
 423 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
 424
 425 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
 426
 427 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 428 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
 429 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
 430
 431 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
 432
 433 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
 434 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
 435 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
 436
 437 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 438    frame-base.  Enable frame-base before frame-unwind. */
 439
 440 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
 441
 442 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
 443 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
 444 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
 445
 446 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
 447
 448 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
 449 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
 450 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
 451
 452 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
 453 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
 454 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
 455
 456 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
 457 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
 458
 459 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 460 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
 461 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
 462
 463 /* On some machines there are bits in addresses which are not really
 464    part of the address, but are used by the kernel, the hardware, etc.
 465    for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 466    we get a "real" address such as one would find in a symbol table.
 467    This is used only for addresses of instructions, and even then I'm
 468    not sure it's used in all contexts.  It exists to deal with there
 469    being a few stray bits in the PC which would mislead us, not as some
 470    sort of generic thing to handle alignment or segmentation (it's
 471    possible it should be in TARGET_READ_PC instead). */
 472
 473 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (CORE_ADDR addr);
 474 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
 475 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
 476
 477 /* It is not at all clear why gdbarch_smash_text_address is not folded into
 478    gdbarch_addr_bits_remove. */
 479
 480 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (CORE_ADDR addr);
 481 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr);
 482 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address);
 483
 484 /* FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 485    indicates if the target needs software single step.  An ISA method to
 486    implement it.
 487
 488    FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 489    breakpoints using the breakpoint system instead of blatting memory directly
 490    (as with rs6000).
 491
 492    FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 493    target can single step.  If not, then implement single step using breakpoints.
 494
 495    A return value of 1 means that the software_single_step breakpoints
 496    were inserted; 0 means they were not. */
 497
 498 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
 499
 500 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
 501 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
 502 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
 503
 504 /* Return non-zero if the processor is executing a delay slot and a
 505    further single-step is needed before the instruction finishes. */
 506
 507 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
 508
 509 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
 510 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
 511 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
 512
 513 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 514    disassembler.  Perhaps objdump can handle it? */
 515
 516 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
 517 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
 518 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
 519
 520 typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
 521 extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
 522 extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);
 523
 524 /* If IN_SOLIB_DYNSYM_RESOLVE_CODE returns true, and SKIP_SOLIB_RESOLVER
 525    evaluates non-zero, this is the address where the debugger will place
 526    a step-resume breakpoint to get us past the dynamic linker. */
 527
 528 typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
 529 extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
 530 extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);
 531
 532 /* Some systems also have trampoline code for returning from shared libs. */
 533
 534 typedef int (gdbarch_in_solib_return_trampoline_ftype) (CORE_ADDR pc, char *name);
 535 extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
 536 extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
 537
 538 /* A target might have problems with watchpoints as soon as the stack
 539    frame of the current function has been destroyed.  This mostly happens
 540    as the first action in a funtion's epilogue.  in_function_epilogue_p()
 541    is defined to return a non-zero value if either the given addr is one
 542    instruction after the stack destroying instruction up to the trailing
 543    return instruction or if we can figure out that the stack frame has
 544    already been invalidated regardless of the value of addr.  Targets
 545    which don't suffer from that problem could just let this functionality
 546    untouched. */
 547
 548 typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
 549 extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr);
 550 extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p);
 551
 552 /* Given a vector of command-line arguments, return a newly allocated
 553    string which, when passed to the create_inferior function, will be
 554    parsed (on Unix systems, by the shell) to yield the same vector.
 555    This function should call error() if the argument vector is not
 556    representable for this target or if this target does not support
 557    command-line arguments.
 558    ARGC is the number of elements in the vector.
 559    ARGV is an array of strings, one per argument. */
 560
 561 typedef char * (gdbarch_construct_inferior_arguments_ftype) (struct gdbarch *gdbarch, int argc, char **argv);
 562 extern char * gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, int argc, char **argv);
 563 extern void set_gdbarch_construct_inferior_arguments (struct gdbarch *gdbarch, gdbarch_construct_inferior_arguments_ftype *construct_inferior_arguments);
 564
 565 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
 566 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
 567 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
 568
 569 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
 570 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
 571 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
 572
 573 extern const char * gdbarch_name_of_malloc (struct gdbarch *gdbarch);
 574 extern void set_gdbarch_name_of_malloc (struct gdbarch *gdbarch, const char * name_of_malloc);
 575
 576 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
 577 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
 578
 579 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
 580 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
 581
 582 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
 583
 584 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
 585 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
 586 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
 587
 588 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
 589
 590 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
 591 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
 592 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);
 593
 594 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
 595
 596 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 597 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
 598 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);
 599
 600 /* Is a register in a group */
 601
 602 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 603 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
 604 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
 605
 606 /* Fetch the pointer to the ith function argument. */
 607
 608 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
 609
 610 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
 611 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
 612 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
 613
 614 /* Return the appropriate register set for a core file section with
 615    name SECT_NAME and size SECT_SIZE. */
 616
 617 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch);
 618
 619 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 620 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
 621 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section);
 622
 623 /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 624    core file into buffer READBUF with length LEN. */
 625
 626 extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);
 627
 628 typedef LONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 629 extern LONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
 630 extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);
 631
 632 /* If the elements of C++ vtables are in-place function descriptors rather
 633    than normal function pointers (which may point to code or a descriptor),
 634    set this to one. */
 635
 636 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
 637 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
 638
 639 /* Set if the least significant bit of the delta is used instead of the least
 640    significant bit of the pfn for pointers to virtual member functions. */
 641
 642 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
 643 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
 644
 645 /* Advance PC to next instruction in order to skip a permanent breakpoint. */
 646
 647 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch);
 648
 649 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
 650 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
 651 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
 652
 653 /* Refresh overlay mapped state for section OSECT. */
 654
 655 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
 656
 657 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
 658 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
 659 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
 660
 661 extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);
 662
 663 typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 664 extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
 665 extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);
 666
 667 /* Handle special encoding of static variables in stabs debug info. */
 668
 669 extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);
 670
 671 typedef char * (gdbarch_static_transform_name_ftype) (char *name);
 672 extern char * gdbarch_static_transform_name (struct gdbarch *gdbarch, char *name);
 673 extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);
 674
 675 /* Set if the address in N_SO or N_FUN stabs may be zero. */
 676
 677 extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
 678 extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);
 679
 680 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 681
 682
 683 /* Mechanism for co-ordinating the selection of a specific
 684    architecture.
 685
 686    GDB targets (*-tdep.c) can register an interest in a specific
 687    architecture.  Other GDB components can register a need to maintain
 688    per-architecture data.
 689
 690    The mechanisms below ensures that there is only a loose connection
 691    between the set-architecture command and the various GDB
 692    components.  Each component can independently register their need
 693    to maintain architecture specific data with gdbarch.
 694
 695    Pragmatics:
 696
 697    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 698    didn't scale.
 699
 700    The more traditional mega-struct containing architecture specific
 701    data for all the various GDB components was also considered.  Since
 702    GDB is built from a variable number of (fairly independent)
 703    components it was determined that the global aproach was not
 704    applicable. */
 705
 706
 707 /* Register a new architectural family with GDB.
 708
 709    Register support for the specified ARCHITECTURE with GDB.  When
 710    gdbarch determines that the specified architecture has been
 711    selected, the corresponding INIT function is called.
 712
 713    --
 714
 715    The INIT function takes two parameters: INFO which contains the
 716    information available to gdbarch about the (possibly new)
 717    architecture; ARCHES which is a list of the previously created
 718    ``struct gdbarch'' for this architecture.
 719
 720    The INFO parameter is, as far as possible, be pre-initialized with
 721    information obtained from INFO.ABFD or the global defaults.
 722
 723    The ARCHES parameter is a linked list (sorted most recently used)
 724    of all the previously created architures for this architecture
 725    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 726    values from the previously selected architecture for this
 727    architecture family.  The global ``current_gdbarch'' shall not be
 728    used.
 729
 730    The INIT function shall return any of: NULL - indicating that it
 731    doesn't recognize the selected architecture; an existing ``struct
 732    gdbarch'' from the ARCHES list - indicating that the new
 733    architecture is just a synonym for an earlier architecture (see
 734    gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
 735    - that describes the selected architecture (see gdbarch_alloc()).
 736
 737    The DUMP_TDEP function shall print out all target specific values.
 738    Care should be taken to ensure that the function works in both the
 739    multi-arch and non- multi-arch cases. */
 740
 741 struct gdbarch_list
 742 {
 743   struct gdbarch *gdbarch;
 744   struct gdbarch_list *next;
 745 };
 746
 747 struct gdbarch_info
 748 {
 749   /* Use default: NULL (ZERO). */
 750   const struct bfd_arch_info *bfd_arch_info;
 751
 752   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
 753   int byte_order;
 754
 755   /* Use default: NULL (ZERO). */
 756   bfd *abfd;
 757
 758   /* Use default: NULL (ZERO). */
 759   struct gdbarch_tdep_info *tdep_info;
 760
 761   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
 762   enum gdb_osabi osabi;
 763
 764   /* Use default: NULL (ZERO).  */
 765   const struct target_desc *target_desc;
 766 };
 767
 768 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 769 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 770
 771 /* DEPRECATED - use gdbarch_register() */
 772 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 773
 774 extern void gdbarch_register (enum bfd_architecture architecture,
 775                               gdbarch_init_ftype *,
 776                               gdbarch_dump_tdep_ftype *);
 777
 778
 779 /* Return a freshly allocated, NULL terminated, array of the valid
 780    architecture names.  Since architectures are registered during the
 781    _initialize phase this function only returns useful information
 782    once initialization has been completed. */
 783
 784 extern const char **gdbarch_printable_names (void);
 785
 786
 787 /* Helper function.  Search the list of ARCHES for a GDBARCH that
 788    matches the information provided by INFO. */
 789
 790 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
 791
 792
 793 /* Helper function.  Create a preliminary ``struct gdbarch''.  Perform
 794    basic initialization using values obtained from the INFO and TDEP
 795    parameters.  set_gdbarch_*() functions are called to complete the
 796    initialization of the object. */
 797
 798 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
 799
 800
 801 /* Helper function.  Free a partially-constructed ``struct gdbarch''.
 802    It is assumed that the caller freeds the ``struct
 803    gdbarch_tdep''. */
 804
 805 extern void gdbarch_free (struct gdbarch *);
 806
 807
 808 /* Helper function.  Allocate memory from the ``struct gdbarch''
 809    obstack.  The memory is freed when the corresponding architecture
 810    is also freed.  */
 811
 812 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
 813 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
 814 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
 815
 816
 817 /* Helper function. Force an update of the current architecture.
 818
 819    The actual architecture selected is determined by INFO, ``(gdb) set
 820    architecture'' et.al., the existing architecture and BFD's default
 821    architecture.  INFO should be initialized to zero and then selected
 822    fields should be updated.
 823
 824    Returns non-zero if the update succeeds */
 825
 826 extern int gdbarch_update_p (struct gdbarch_info info);
 827
 828
 829 /* Helper function.  Find an architecture matching info.
 830
 831    INFO should be initialized using gdbarch_info_init, relevant fields
 832    set, and then finished using gdbarch_info_fill.
 833
 834    Returns the corresponding architecture, or NULL if no matching
 835    architecture was found.  "current_gdbarch" is not updated.  */
 836
 837 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
 838
 839
 840 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
 841
 842    FIXME: kettenis/20031124: Of the functions that follow, only
 843    gdbarch_from_bfd is supposed to survive.  The others will
 844    dissappear since in the future GDB will (hopefully) be truly
 845    multi-arch.  However, for now we're still stuck with the concept of
 846    a single active architecture.  */
 847
 848 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
 849
 850
 851 /* Register per-architecture data-pointer.
 852
 853    Reserve space for a per-architecture data-pointer.  An identifier
 854    for the reserved data-pointer is returned.  That identifer should
 855    be saved in a local static variable.
 856
 857    Memory for the per-architecture data shall be allocated using
 858    gdbarch_obstack_zalloc.  That memory will be deleted when the
 859    corresponding architecture object is deleted.
 860
 861    When a previously created architecture is re-selected, the
 862    per-architecture data-pointer for that previous architecture is
 863    restored.  INIT() is not re-called.
 864
 865    Multiple registrarants for any architecture are allowed (and
 866    strongly encouraged).  */
 867
 868 struct gdbarch_data;
 869
 870 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
 871 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
 872 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
 873 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
 874 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
 875                                          struct gdbarch_data *data,
 876                                          void *pointer);
 877
 878 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
 879
 880
 881 /* Set the dynamic target-system-dependent parameters (architecture,
 882    byte-order, ...) using information found in the BFD */
 883
 884 extern void set_gdbarch_from_file (bfd *);
 885
 886
 887 /* Initialize the current architecture to the "first" one we find on
 888    our list.  */
 889
 890 extern void initialize_current_architecture (void);
 891
 892 /* gdbarch trace variable */
 893 extern int gdbarch_debug;
 894
 895 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
 896
 897 #endif