gdb/gdbarch.h - gdb

Data types defined

Macros defined

Source code

  1. /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
  2. /* vi:set ro: */

  4. /* Dynamic architecture support for GDB, the GNU debugger.

  6.    Copyright (C) 1998-2015 Free Software Foundation, Inc.

  8.    This file is part of GDB.

  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.

  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.

  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/>.  */

  23. /* This file was created with the aid of ``gdbarch.sh''.

  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.

  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.  */

  35. #ifndef GDBARCH_H
  36. ‌#define GDBARCH_H

  38. #include "frame.h"

  40. struct floatformat;
  41. struct ui_file;
  42. struct value;
  43. struct objfile;
  44. struct obj_section;
  45. struct minimal_symbol;
  46. struct regcache;
  47. struct reggroup;
  48. struct regset;
  49. struct disassemble_info;
  50. struct target_ops;
  51. struct obstack;
  52. struct bp_target_info;
  53. struct target_desc;
  54. struct objfile;
  55. struct symbol;
  56. struct displaced_step_closure;
  57. struct core_regset_section;
  58. struct syscall;
  59. struct agent_expr;
  60. struct axs_value;
  61. struct stap_parse_info;
  62. struct ravenscar_arch_ops;
  63. struct elf_internal_linux_prpsinfo;
  64. struct mem_range;
  65. struct syscalls_info;

  67. /* The architecture associated with the inferior through the
  68.    connection to the target.

  70.    The architecture vector provides some information that is really a
  71.    property of the inferior, accessed through a particular target:
  72.    ptrace operations; the layout of certain RSP packets; the solib_ops
  73.    vector; etc.  To differentiate architecture accesses to
  74.    per-inferior/target properties from
  75.    per-thread/per-frame/per-objfile properties, accesses to
  76.    per-inferior/target properties should be made through this
  77.    gdbarch.  */

  79. /* This is a convenience wrapper for 'current_inferior ()->gdbarch'.  */
  80. extern struct gdbarch *target_gdbarch (void);

  82. /* Callback type for the 'iterate_over_objfiles_in_search_order'
  83.    gdbarch  method.  */

  85. ‌typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
  86.   (struct objfile *objfile, void *cb_data);

  88. ‌typedef void (iterate_over_regset_sections_cb)
  89.   (const char *sect_name, int size, const struct regset *regset,
  90.    const char *human_name, void *cb_data);


  93. /* The following are pre-initialized by GDBARCH.  */

  95. extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
  96. /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized.  */

  98. extern enum bfd_endian gdbarch_byte_order (struct gdbarch *gdbarch);
  99. /* set_gdbarch_byte_order() - not applicable - pre-initialized.  */

  101. extern enum bfd_endian gdbarch_byte_order_for_code (struct gdbarch *gdbarch);
  102. /* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized.  */

  104. extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
  105. /* set_gdbarch_osabi() - not applicable - pre-initialized.  */

  107. extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
  108. /* set_gdbarch_target_desc() - not applicable - pre-initialized.  */


  111. /* The following are initialized by the target dependent code.  */

  113. /* The bit byte-order has to do just with numbering of bits in debugging symbols
  114.    and such.  Conceptually, it's quite separate from byte/word byte order. */

  116. extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
  117. extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);

  119. /* Number of bits in a char or unsigned char for the target machine.
  120.    Just like CHAR_BIT in <limits.h> but describes the target machine.
  121.    v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:

  123.    Number of bits in a short or unsigned short for the target machine. */

  125. extern int gdbarch_short_bit (struct gdbarch *gdbarch);
  126. extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);

  128. /* Number of bits in an int or unsigned int for the target machine. */

  130. extern int gdbarch_int_bit (struct gdbarch *gdbarch);
  131. extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);

  133. /* Number of bits in a long or unsigned long for the target machine. */

  135. extern int gdbarch_long_bit (struct gdbarch *gdbarch);
  136. extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);

  138. /* Number of bits in a long long or unsigned long long for the target
  139.    machine. */

  141. extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
  142. extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);

  144. /* Alignment of a long long or unsigned long long for the target
  145.    machine. */

  147. extern int gdbarch_long_long_align_bit (struct gdbarch *gdbarch);
  148. extern void set_gdbarch_long_long_align_bit (struct gdbarch *gdbarch, int long_long_align_bit);

  150. /* The ABI default bit-size and format for "half", "float", "double", and
  151.    "long double".  These bit/format pairs should eventually be combined
  152.    into a single object.  For the moment, just initialize them as a pair.
  153.    Each format describes both the big and little endian layouts (if
  154.    useful). */

  156. extern int gdbarch_half_bit (struct gdbarch *gdbarch);
  157. extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit);

  159. extern const struct floatformat ** gdbarch_half_format (struct gdbarch *gdbarch);
  160. extern void set_gdbarch_half_format (struct gdbarch *gdbarch, const struct floatformat ** half_format);

  162. extern int gdbarch_float_bit (struct gdbarch *gdbarch);
  163. extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);

  165. extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
  166. extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);

  168. extern int gdbarch_double_bit (struct gdbarch *gdbarch);
  169. extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);

  171. extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
  172. extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);

  174. extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
  175. extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);

  177. extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
  178. extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);

  180. /* For most targets, a pointer on the target and its representation as an
  181.    address in GDB have the same size and "look the same".  For such a
  182.    target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
  183.    / addr_bit will be set from it.

  185.    If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
  186.    also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
  187.    gdbarch_address_to_pointer as well.

  189.    ptr_bit is the size of a pointer on the target */

  191. extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
  192. extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);

  194. /* addr_bit is the size of a target address as represented in gdb */

  196. extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
  197. extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);

  199. /* dwarf2_addr_size is the target address size as used in the Dwarf debug
  200.    info.  For .debug_frame FDEs, this is supposed to be the target address
  201.    size from the associated CU header, and which is equivalent to the
  202.    DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
  203.    Unfortunately there is no good way to determine this value.  Therefore
  204.    dwarf2_addr_size simply defaults to the target pointer size.

  206.    dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
  207.    defined using the target's pointer size so far.

  209.    Note that dwarf2_addr_size only needs to be redefined by a target if the
  210.    GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
  211.    and if Dwarf versions < 4 need to be supported. */

  213. extern int gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch);
  214. extern void set_gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch, int dwarf2_addr_size);

  216. /* One if `char' acts like `signed char', zero if `unsigned char'. */

  218. extern int gdbarch_char_signed (struct gdbarch *gdbarch);
  219. extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);

  221. extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);

  223. ‌typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
  224. extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
  225. extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);

  227. extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);

  229. ‌typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
  230. extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
  231. extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);

  233. /* Function for getting target's idea of a frame pointer.  FIXME: GDB's
  234.    whole scheme for dealing with "frames" and "frame pointers" needs a
  235.    serious shakedown. */

  237. ‌typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
  238. extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
  239. extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);

  241. extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);

  243. ‌typedef enum register_status (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
  244. extern enum register_status gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
  245. extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);

  247. /* Read a register into a new struct value.  If the register is wholly
  248.    or partly unavailable, this should call mark_value_bytes_unavailable
  249.    as appropriate.  If this is defined, then pseudo_register_read will
  250.    never be called. */

  252. extern int gdbarch_pseudo_register_read_value_p (struct gdbarch *gdbarch);

  254. ‌typedef struct value * (gdbarch_pseudo_register_read_value_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
  255. extern struct value * gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
  256. extern void set_gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_value_ftype *pseudo_register_read_value);

  258. extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);

  260. ‌typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
  261. extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
  262. extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);

  264. extern int gdbarch_num_regs (struct gdbarch *gdbarch);
  265. extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);

  267. /* This macro gives the number of pseudo-registers that live in the
  268.    register namespace but do not get fetched or stored on the target.
  269.    These pseudo-registers may be aliases for other registers,
  270.    combinations of other registers, or they may be computed by GDB. */

  272. extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
  273. extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);

  275. /* Assemble agent expression bytecode to collect pseudo-register REG.
  276.    Return -1 if something goes wrong, 0 otherwise. */

  278. extern int gdbarch_ax_pseudo_register_collect_p (struct gdbarch *gdbarch);

  280. ‌typedef int (gdbarch_ax_pseudo_register_collect_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
  281. extern int gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
  282. extern void set_gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_collect_ftype *ax_pseudo_register_collect);

  284. /* Assemble agent expression bytecode to push the value of pseudo-register
  285.    REG on the interpreter stack.
  286.    Return -1 if something goes wrong, 0 otherwise. */

  288. extern int gdbarch_ax_pseudo_register_push_stack_p (struct gdbarch *gdbarch);

  290. ‌typedef int (gdbarch_ax_pseudo_register_push_stack_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
  291. extern int gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
  292. extern void set_gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_push_stack_ftype *ax_pseudo_register_push_stack);

  294. /* GDB's standard (or well known) register numbers.  These can map onto
  295.    a real register or a pseudo (computed) register or not be defined at
  296.    all (-1).
  297.    gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */

  299. extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
  300. extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);

  302. extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
  303. extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);

  305. extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
  306. extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);

  308. extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
  309. extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);

  311. /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */

  313. ‌typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr);
  314. extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
  315. extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);

  317. /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */

  319. ‌typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr);
  320. extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
  321. extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);

  323. /* Convert from an sdb register number to an internal gdb register number. */

  325. ‌typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr);
  326. extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
  327. extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);

  329. /* Provide a default mapping from a DWARF2 register number to a gdb REGNUM. */

  331. ‌typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr);
  332. extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
  333. extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);

  335. ‌typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
  336. extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
  337. extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);

  339. /* Return the type of a register specified by the architecture.  Only
  340.    the register cache should call this function directly; others should
  341.    use "register_type". */

  343. extern int gdbarch_register_type_p (struct gdbarch *gdbarch);

  345. ‌typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
  346. extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
  347. extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);

  349. extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch);

  351. ‌typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame);
  352. extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame);
  353. extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);

  355. /* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
  356.    deprecated_fp_regnum. */

  358. extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
  359. extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);

  361. extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);

  363. ‌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);
  364. 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);
  365. extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);

  367. extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
  368. extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);

  370. extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);

  372. ‌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);
  373. 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);
  374. extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);

  376. ‌typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
  377. extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
  378. extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);

  380. ‌typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
  381. extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
  382. extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);

  384. extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);

  386. ‌typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
  387. extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
  388. extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);

  390. /* MAP a GDB RAW register number onto a simulator register number.  See
  391.    also include/...-sim.h. */

  393. ‌typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr);
  394. extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
  395. extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);

  397. ‌typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum);
  398. extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
  399. extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);

  401. ‌typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum);
  402. extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
  403. extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);

  405. /* Determine the address where a longjmp will land and save this address
  406.    in PC.  Return nonzero on success.

  408.    FRAME corresponds to the longjmp frame. */

  410. extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);

  412. ‌typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
  413. extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
  414. extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);

  416. extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
  417. extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);

  419. ‌typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
  420. extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
  421. extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);

  423. ‌typedef int (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
  424. extern int gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
  425. extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);

  427. ‌typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
  428. extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
  429. extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);

  431. /* Construct a value representing the contents of register REGNUM in
  432.    frame FRAME_ID, interpreted as type TYPE.  The routine needs to
  433.    allocate and return a struct value with all value attributes
  434.    (but not the value contents) filled in. */

  436. ‌typedef struct value * (gdbarch_value_from_register_ftype) (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_id frame_id);
  437. extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_id frame_id);
  438. extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);

  440. ‌typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
  441. extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
  442. extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);

  444. ‌typedef void (gdbarch_address_to_pointer_ftype) (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
  445. extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
  446. extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);

  448. extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);

  450. ‌typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
  451. extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
  452. extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);

  454. /* Return the return-value convention that will be used by FUNCTION
  455.    to return a value of type VALTYPE.  FUNCTION may be NULL in which
  456.    case the return convention is computed based only on VALTYPE.

  458.    If READBUF is not NULL, extract the return value and save it in this buffer.

  460.    If WRITEBUF is not NULL, it contains a return value which will be
  461.    stored into the appropriate register.  This can be used when we want
  462.    to force the value returned by a function (see the "return" command
  463.    for instance). */

  465. extern int gdbarch_return_value_p (struct gdbarch *gdbarch);

  467. ‌typedef enum return_value_convention (gdbarch_return_value_ftype) (struct gdbarch *gdbarch, struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
  468. extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
  469. extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);

  471. /* Return true if the return value of function is stored in the first hidden
  472.    parameter.  In theory, this feature should be language-dependent, specified
  473.    by language and its ABI, such as C++.  Unfortunately, compiler may
  474.    implement it to a target-dependent feature.  So that we need such hook here
  475.    to be aware of this in GDB. */

  477. ‌typedef int (gdbarch_return_in_first_hidden_param_p_ftype) (struct gdbarch *gdbarch, struct type *type);
  478. extern int gdbarch_return_in_first_hidden_param_p (struct gdbarch *gdbarch, struct type *type);
  479. extern void set_gdbarch_return_in_first_hidden_param_p (struct gdbarch *gdbarch, gdbarch_return_in_first_hidden_param_p_ftype *return_in_first_hidden_param_p);

  481. ‌typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
  482. extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
  483. extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);

  485. extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch);

  487. ‌typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
  488. extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
  489. extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue);

  491. /* On some platforms, a single function may provide multiple entry points,
  492.    e.g. one that is used for function-pointer calls and a different one
  493.    that is used for direct function calls.
  494.    In order to ensure that breakpoints set on the function will trigger
  495.    no matter via which entry point the function is entered, a platform
  496.    may provide the skip_entrypoint callback.  It is called with IP set
  497.    to the main entry point of a function (as determined by the symbol table),
  498.    and should return the address of the innermost entry point, where the
  499.    actual breakpoint needs to be set.  Note that skip_entrypoint is used
  500.    by GDB common code even when debugging optimized code, where skip_prologue
  501.    is not used. */

  503. extern int gdbarch_skip_entrypoint_p (struct gdbarch *gdbarch);

  505. ‌typedef CORE_ADDR (gdbarch_skip_entrypoint_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
  506. extern CORE_ADDR gdbarch_skip_entrypoint (struct gdbarch *gdbarch, CORE_ADDR ip);
  507. extern void set_gdbarch_skip_entrypoint (struct gdbarch *gdbarch, gdbarch_skip_entrypoint_ftype *skip_entrypoint);

  509. ‌typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
  510. extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
  511. extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);

  513. ‌typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
  514. extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
  515. extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);

  517. /* Return the adjusted address and kind to use for Z0/Z1 packets.
  518.    KIND is usually the memory length of the breakpoint, but may have a
  519.    different target-specific meaning. */

  521. ‌typedef void (gdbarch_remote_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
  522. extern void gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
  523. extern void set_gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_remote_breakpoint_from_pc_ftype *remote_breakpoint_from_pc);

  525. extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);

  527. ‌typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
  528. extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
  529. extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);

  531. ‌typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
  532. extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
  533. extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);

  535. ‌typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
  536. extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
  537. extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);

  539. extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
  540. extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);

  542. /* A function can be addressed by either it's "pointer" (possibly a
  543.    descriptor address) or "entry point" (first executable instruction).
  544.    The method "convert_from_func_ptr_addr" converting the former to the
  545.    latter.  gdbarch_deprecated_function_start_offset is being used to implement
  546.    a simplified subset of that functionality - the function's address
  547.    corresponds to the "function pointer" and the function's start
  548.    corresponds to the "function entry point" - and hence is redundant. */

  550. extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
  551. extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);

  553. /* Return the remote protocol register number associated with this
  554.    register.  Normally the identity mapping. */

  556. ‌typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
  557. extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
  558. extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);

  560. /* Fetch the target specific address used to represent a load module. */

  562. extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);

  564. ‌typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
  565. extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
  566. extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);

  568. extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
  569. extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);

  571. extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);

  573. ‌typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
  574. extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
  575. extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);

  577. extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);

  579. ‌typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
  580. extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
  581. extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);

  583. /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
  584.    frame-base.  Enable frame-base before frame-unwind. */

  586. extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);

  588. ‌typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
  589. extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
  590. extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);

  592. extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);

  594. ‌typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
  595. extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
  596. extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);

  598. ‌typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
  599. extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
  600. extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);

  602. extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
  603. extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);

  605. ‌typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
  606. extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
  607. extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);

  609. /* On some machines there are bits in addresses which are not really
  610.    part of the address, but are used by the kernel, the hardware, etc.
  611.    for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
  612.    we get a "real" address such as one would find in a symbol table.
  613.    This is used only for addresses of instructions, and even then I'm
  614.    not sure it's used in all contexts.  It exists to deal with there
  615.    being a few stray bits in the PC which would mislead us, not as some
  616.    sort of generic thing to handle alignment or segmentation (it's
  617.    possible it should be in TARGET_READ_PC instead). */

  619. ‌typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
  620. extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
  621. extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);

  623. /* FIXME/cagney/2001-01-18: This should be split in two.  A target method that
  624.    indicates if the target needs software single step.  An ISA method to
  625.    implement it.

  627.    FIXME/cagney/2001-01-18: This should be replaced with something that inserts
  628.    breakpoints using the breakpoint system instead of blatting memory directly
  629.    (as with rs6000).

  631.    FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
  632.    target can single step.  If not, then implement single step using breakpoints.

  634.    A return value of 1 means that the software_single_step breakpoints
  635.    were inserted; 0 means they were not. */

  637. extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);

  639. ‌typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
  640. extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
  641. extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);

  643. /* Return non-zero if the processor is executing a delay slot and a
  644.    further single-step is needed before the instruction finishes. */

  646. extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);

  648. ‌typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
  649. extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
  650. extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);

  652. /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
  653.    disassembler.  Perhaps objdump can handle it? */

  655. ‌typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
  656. extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
  657. extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);

  659. ‌typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
  660. extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
  661. extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);

  663. /* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
  664.    evaluates non-zero, this is the address where the debugger will place
  665.    a step-resume breakpoint to get us past the dynamic linker. */

  667. ‌typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
  668. extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
  669. extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);

  671. /* Some systems also have trampoline code for returning from shared libs. */

  673. ‌typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, const char *name);
  674. extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, const char *name);
  675. extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);

  677. /* A target might have problems with watchpoints as soon as the stack
  678.    frame of the current function has been destroyed.  This mostly happens
  679.    as the first action in a funtion's epilogue.  in_function_epilogue_p()
  680.    is defined to return a non-zero value if either the given addr is one
  681.    instruction after the stack destroying instruction up to the trailing
  682.    return instruction or if we can figure out that the stack frame has
  683.    already been invalidated regardless of the value of addr.  Targets
  684.    which don't suffer from that problem could just let this functionality
  685.    untouched. */

  687. ‌typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
  688. extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr);
  689. extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p);

  691. /* Process an ELF symbol in the minimal symbol table in a backend-specific
  692.    way.  Normally this hook is supposed to do nothing, however if required,
  693.    then this hook can be used to apply tranformations to symbols that are
  694.    considered special in some way.  For example the MIPS backend uses it
  695.    to interpret `st_other' information to mark compressed code symbols so
  696.    that they can be treated in the appropriate manner in the processing of
  697.    the main symbol table and DWARF-2 records. */

  699. extern int gdbarch_elf_make_msymbol_special_p (struct gdbarch *gdbarch);

  701. ‌typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
  702. extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
  703. extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);

  705. ‌typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
  706. extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
  707. extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);

  709. /* Process a symbol in the main symbol table in a backend-specific way.
  710.    Normally this hook is supposed to do nothing, however if required,
  711.    then this hook can be used to apply tranformations to symbols that
  712.    are considered special in some way.  This is currently used by the
  713.    MIPS backend to make sure compressed code symbols have the ISA bit
  714.    set.  This in turn is needed for symbol values seen in GDB to match
  715.    the values used at the runtime by the program itself, for function
  716.    and label references. */

  718. ‌typedef void (gdbarch_make_symbol_special_ftype) (struct symbol *sym, struct objfile *objfile);
  719. extern void gdbarch_make_symbol_special (struct gdbarch *gdbarch, struct symbol *sym, struct objfile *objfile);
  720. extern void set_gdbarch_make_symbol_special (struct gdbarch *gdbarch, gdbarch_make_symbol_special_ftype *make_symbol_special);

  722. /* Adjust the address retrieved from a DWARF-2 record other than a line
  723.    entry in a backend-specific way.  Normally this hook is supposed to
  724.    return the address passed unchanged, however if that is incorrect for
  725.    any reason, then this hook can be used to fix the address up in the
  726.    required manner.  This is currently used by the MIPS backend to make
  727.    sure addresses in FDE, range records, etc. referring to compressed
  728.    code have the ISA bit set, matching line information and the symbol
  729.    table. */

  731. ‌typedef CORE_ADDR (gdbarch_adjust_dwarf2_addr_ftype) (CORE_ADDR pc);
  732. extern CORE_ADDR gdbarch_adjust_dwarf2_addr (struct gdbarch *gdbarch, CORE_ADDR pc);
  733. extern void set_gdbarch_adjust_dwarf2_addr (struct gdbarch *gdbarch, gdbarch_adjust_dwarf2_addr_ftype *adjust_dwarf2_addr);

  735. /* Adjust the address updated by a line entry in a backend-specific way.
  736.    Normally this hook is supposed to return the address passed unchanged,
  737.    however in the case of inconsistencies in these records, this hook can
  738.    be used to fix them up in the required manner.  This is currently used
  739.    by the MIPS backend to make sure all line addresses in compressed code
  740.    are presented with the ISA bit set, which is not always the case.  This
  741.    in turn ensures breakpoint addresses are correctly matched against the
  742.    stop PC. */

  744. ‌typedef CORE_ADDR (gdbarch_adjust_dwarf2_line_ftype) (CORE_ADDR addr, int rel);
  745. extern CORE_ADDR gdbarch_adjust_dwarf2_line (struct gdbarch *gdbarch, CORE_ADDR addr, int rel);
  746. extern void set_gdbarch_adjust_dwarf2_line (struct gdbarch *gdbarch, gdbarch_adjust_dwarf2_line_ftype *adjust_dwarf2_line);

  748. extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
  749. extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);

  751. extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
  752. extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);

  754. extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);

  756. ‌typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
  757. extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
  758. extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);

  760. extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);

  762. ‌typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
  763. extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
  764. 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);

  766. /* Return the appropriate type_flags for the supplied address class.
  767.    This function should return 1 if the address class was recognized and
  768.    type_flags was set, zero otherwise. */

  770. extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);

  772. ‌typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
  773. extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
  774. 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);

  776. /* Is a register in a group */

  778. ‌typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
  779. extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
  780. extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);

  782. /* Fetch the pointer to the ith function argument. */

  784. extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);

  786. ‌typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
  787. extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
  788. extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);

  790. /* Iterate over all supported register notes in a core file.  For each
  791.    supported register note section, the iterator must call CB and pass
  792.    CB_DATA unchanged.  If REGCACHE is not NULL, the iterator can limit
  793.    the supported register note sections based on the current register
  794.    values.  Otherwise it should enumerate all supported register note
  795.    sections. */

  797. extern int gdbarch_iterate_over_regset_sections_p (struct gdbarch *gdbarch);

  799. ‌typedef void (gdbarch_iterate_over_regset_sections_ftype) (struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache);
  800. extern void gdbarch_iterate_over_regset_sections (struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache);
  801. extern void set_gdbarch_iterate_over_regset_sections (struct gdbarch *gdbarch, gdbarch_iterate_over_regset_sections_ftype *iterate_over_regset_sections);

  803. /* Create core file notes */

  805. extern int gdbarch_make_corefile_notes_p (struct gdbarch *gdbarch);

  807. ‌typedef char * (gdbarch_make_corefile_notes_ftype) (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
  808. extern char * gdbarch_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
  809. extern void set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch, gdbarch_make_corefile_notes_ftype *make_corefile_notes);

  811. /* The elfcore writer hook to use to write Linux prpsinfo notes to core
  812.    files.  Most Linux architectures use the same prpsinfo32 or
  813.    prpsinfo64 layouts, and so won't need to provide this hook, as we
  814.    call the Linux generic routines in bfd to write prpsinfo notes by
  815.    default. */

  817. extern int gdbarch_elfcore_write_linux_prpsinfo_p (struct gdbarch *gdbarch);

  819. ‌typedef char * (gdbarch_elfcore_write_linux_prpsinfo_ftype) (bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
  820. extern char * gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
  821. extern void set_gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, gdbarch_elfcore_write_linux_prpsinfo_ftype *elfcore_write_linux_prpsinfo);

  823. /* Find core file memory regions */

  825. extern int gdbarch_find_memory_regions_p (struct gdbarch *gdbarch);

  827. ‌typedef int (gdbarch_find_memory_regions_ftype) (struct gdbarch *gdbarch, find_memory_region_ftype func, void *data);
  828. extern int gdbarch_find_memory_regions (struct gdbarch *gdbarch, find_memory_region_ftype func, void *data);
  829. extern void set_gdbarch_find_memory_regions (struct gdbarch *gdbarch, gdbarch_find_memory_regions_ftype *find_memory_regions);

  831. /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
  832.    core file into buffer READBUF with length LEN.  Return the number of bytes read
  833.    (zero indicates failure).
  834.    failed, otherwise, return the red length of READBUF. */

  836. extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);

  838. ‌typedef ULONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
  839. extern ULONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
  840. extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);

  842. /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
  843.    libraries list from core file into buffer READBUF with length LEN.
  844.    Return the number of bytes read (zero indicates failure). */

  846. extern int gdbarch_core_xfer_shared_libraries_aix_p (struct gdbarch *gdbarch);

  848. ‌typedef ULONGEST (gdbarch_core_xfer_shared_libraries_aix_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
  849. extern ULONGEST gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
  850. extern void set_gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_aix_ftype *core_xfer_shared_libraries_aix);

  852. /* How the core target converts a PTID from a core file to a string. */

  854. extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch);

  856. ‌typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
  857. extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
  858. extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str);

  860. /* BFD target to use when generating a core file. */

  862. extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch);

  864. extern const char * gdbarch_gcore_bfd_target (struct gdbarch *gdbarch);
  865. extern void set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch, const char * gcore_bfd_target);

  867. /* If the elements of C++ vtables are in-place function descriptors rather
  868.    than normal function pointers (which may point to code or a descriptor),
  869.    set this to one. */

  871. extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
  872. extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);

  874. /* Set if the least significant bit of the delta is used instead of the least
  875.    significant bit of the pfn for pointers to virtual member functions. */

  877. extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
  878. extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);

  880. /* Advance PC to next instruction in order to skip a permanent breakpoint. */

  882. ‌typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
  883. extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
  884. extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);

  886. /* The maximum length of an instruction on this architecture in bytes. */

  888. extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch);

  890. extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch);
  891. extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length);

  893. /* Copy the instruction at FROM to TO, and make any adjustments
  894.    necessary to single-step it at that address.

  896.    REGS holds the state the thread's registers will have before
  897.    executing the copied instruction; the PC in REGS will refer to FROM,
  898.    not the copy at TO.  The caller should update it to point at TO later.

  900.    Return a pointer to data of the architecture's choice to be passed
  901.    to gdbarch_displaced_step_fixup.  Or, return NULL to indicate that
  902.    the instruction's effects have been completely simulated, with the
  903.    resulting state written back to REGS.

  905.    For a general explanation of displaced stepping and how GDB uses it,
  906.    see the comments in infrun.c.

  908.    The TO area is only guaranteed to have space for
  909.    gdbarch_max_insn_length (arch) bytes, so this function must not
  910.    write more bytes than that to that area.

  912.    If you do not provide this function, GDB assumes that the
  913.    architecture does not support displaced stepping.

  915.    If your architecture doesn't need to adjust instructions before
  916.    single-stepping them, consider using simple_displaced_step_copy_insn
  917.    here. */

  919. extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch);

  921. ‌typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
  922. extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
  923. extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);

  925. /* Return true if GDB should use hardware single-stepping to execute
  926.    the displaced instruction identified by CLOSURE.  If false,
  927.    GDB will simply restart execution at the displaced instruction
  928.    location, and it is up to the target to ensure GDB will receive
  929.    control again (e.g. by placing a software breakpoint instruction
  930.    into the displaced instruction buffer).

  932.    The default implementation returns false on all targets that
  933.    provide a gdbarch_software_single_step routine, and true otherwise. */

  935. ‌typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
  936. extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
  937. extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);

  939. /* Fix up the state resulting from successfully single-stepping a
  940.    displaced instruction, to give the result we would have gotten from
  941.    stepping the instruction in its original location.

  943.    REGS is the register state resulting from single-stepping the
  944.    displaced instruction.

  946.    CLOSURE is the result from the matching call to
  947.    gdbarch_displaced_step_copy_insn.

  949.    If you provide gdbarch_displaced_step_copy_insn.but not this
  950.    function, then GDB assumes that no fixup is needed after
  951.    single-stepping the instruction.

  953.    For a general explanation of displaced stepping and how GDB uses it,
  954.    see the comments in infrun.c. */

  956. extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch);

  958. ‌typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
  959. extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
  960. extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup);

  962. /* Free a closure returned by gdbarch_displaced_step_copy_insn.

  964.    If you provide gdbarch_displaced_step_copy_insn, you must provide
  965.    this function as well.

  967.    If your architecture uses closures that don't need to be freed, then
  968.    you can use simple_displaced_step_free_closure here.

  970.    For a general explanation of displaced stepping and how GDB uses it,
  971.    see the comments in infrun.c. */

  973. ‌typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
  974. extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
  975. extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure);

  977. /* Return the address of an appropriate place to put displaced
  978.    instructions while we step over them.  There need only be one such
  979.    place, since we're only stepping one thread over a breakpoint at a
  980.    time.

  982.    For a general explanation of displaced stepping and how GDB uses it,
  983.    see the comments in infrun.c. */

  985. ‌typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch);
  986. extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch);
  987. extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location);

  989. /* Relocate an instruction to execute at a different address.  OLDLOC
  990.    is the address in the inferior memory where the instruction to
  991.    relocate is currently at.  On input, TO points to the destination
  992.    where we want the instruction to be copied (and possibly adjusted)
  993.    to.  On output, it points to one past the end of the resulting
  994.    instruction(s).  The effect of executing the instruction at TO shall
  995.    be the same as if executing it at FROM.  For example, call
  996.    instructions that implicitly push the return address on the stack
  997.    should be adjusted to return to the instruction after OLDLOC;
  998.    relative branches, and other PC-relative instructions need the
  999.    offset adjusted; etc. */

  1001. extern int gdbarch_relocate_instruction_p (struct gdbarch *gdbarch);

  1003. ‌typedef void (gdbarch_relocate_instruction_ftype) (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
  1004. extern void gdbarch_relocate_instruction (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
  1005. extern void set_gdbarch_relocate_instruction (struct gdbarch *gdbarch, gdbarch_relocate_instruction_ftype *relocate_instruction);

  1007. /* Refresh overlay mapped state for section OSECT. */

  1009. extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);

  1011. ‌typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
  1012. extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
  1013. extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);

  1015. extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);

  1017. ‌typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
  1018. extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
  1019. extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);

  1021. /* Handle special encoding of static variables in stabs debug info. */

  1023. extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);

  1025. ‌typedef const char * (gdbarch_static_transform_name_ftype) (const char *name);
  1026. extern const char * gdbarch_static_transform_name (struct gdbarch *gdbarch, const char *name);
  1027. extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);

  1029. /* Set if the address in N_SO or N_FUN stabs may be zero. */

  1031. extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
  1032. extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);

  1034. /* Parse the instruction at ADDR storing in the record execution log
  1035.    the registers REGCACHE and memory ranges that will be affected when
  1036.    the instruction executes, along with their current values.
  1037.    Return -1 if something goes wrong, 0 otherwise. */

  1039. extern int gdbarch_process_record_p (struct gdbarch *gdbarch);

  1041. ‌typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
  1042. extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
  1043. extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record);

  1045. /* Save process state after a signal.
  1046.    Return -1 if something goes wrong, 0 otherwise. */

  1048. extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch);

  1050. ‌typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum gdb_signal signal);
  1051. extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum gdb_signal signal);
  1052. extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal);

  1054. /* Signal translation: translate inferior's signal (target's) number
  1055.    into GDB's representation.  The implementation of this method must
  1056.    be host independent.  IOW, don't rely on symbols of the NAT_FILE
  1057.    header (the nm-*.h files), the host <signal.h> header, or similar
  1058.    headers.  This is mainly used when cross-debugging core files ---
  1059.    "Live" targets hide the translation behind the target interface
  1060.    (target_wait, target_resume, etc.). */

  1062. extern int gdbarch_gdb_signal_from_target_p (struct gdbarch *gdbarch);

  1064. ‌typedef enum gdb_signal (gdbarch_gdb_signal_from_target_ftype) (struct gdbarch *gdbarch, int signo);
  1065. extern enum gdb_signal gdbarch_gdb_signal_from_target (struct gdbarch *gdbarch, int signo);
  1066. extern void set_gdbarch_gdb_signal_from_target (struct gdbarch *gdbarch, gdbarch_gdb_signal_from_target_ftype *gdb_signal_from_target);

  1068. /* Signal translation: translate the GDB's internal signal number into
  1069.    the inferior's signal (target's) representation.  The implementation
  1070.    of this method must be host independent.  IOW, don't rely on symbols
  1071.    of the NAT_FILE header (the nm-*.h files), the host <signal.h>
  1072.    header, or similar headers.
  1073.    Return the target signal number if found, or -1 if the GDB internal
  1074.    signal number is invalid. */

  1076. extern int gdbarch_gdb_signal_to_target_p (struct gdbarch *gdbarch);

  1078. ‌typedef int (gdbarch_gdb_signal_to_target_ftype) (struct gdbarch *gdbarch, enum gdb_signal signal);
  1079. extern int gdbarch_gdb_signal_to_target (struct gdbarch *gdbarch, enum gdb_signal signal);
  1080. extern void set_gdbarch_gdb_signal_to_target (struct gdbarch *gdbarch, gdbarch_gdb_signal_to_target_ftype *gdb_signal_to_target);

  1082. /* Extra signal info inspection.

  1084.    Return a type suitable to inspect extra signal information. */

  1086. extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch);

  1088. ‌typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch);
  1089. extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch);
  1090. extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type);

  1092. /* Record architecture-specific information from the symbol table. */

  1094. extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);

  1096. ‌typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
  1097. extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
  1098. extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);

  1100. /* Function for the 'catch syscall' feature.
  1101.    Get architecture-specific system calls information from registers. */

  1103. extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch);

  1105. ‌typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
  1106. extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid);
  1107. extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number);

  1109. /* The filename of the XML syscall for this architecture. */

  1111. extern const char * gdbarch_xml_syscall_file (struct gdbarch *gdbarch);
  1112. extern void set_gdbarch_xml_syscall_file (struct gdbarch *gdbarch, const char * xml_syscall_file);

  1114. /* Information about system calls from this architecture */

  1116. extern struct syscalls_info * gdbarch_syscalls_info (struct gdbarch *gdbarch);
  1117. extern void set_gdbarch_syscalls_info (struct gdbarch *gdbarch, struct syscalls_info * syscalls_info);

  1119. /* SystemTap related fields and functions.
  1120.    A NULL-terminated array of prefixes used to mark an integer constant
  1121.    on the architecture's assembly.
  1122.    For example, on x86 integer constants are written as:

  1124.     $10 ;; integer constant 10

  1126.    in this case, this prefix would be the character `$'. */

  1128. extern const char *const * gdbarch_stap_integer_prefixes (struct gdbarch *gdbarch);
  1129. extern void set_gdbarch_stap_integer_prefixes (struct gdbarch *gdbarch, const char *const * stap_integer_prefixes);

  1131. /* A NULL-terminated array of suffixes used to mark an integer constant
  1132.    on the architecture's assembly. */

  1134. extern const char *const * gdbarch_stap_integer_suffixes (struct gdbarch *gdbarch);
  1135. extern void set_gdbarch_stap_integer_suffixes (struct gdbarch *gdbarch, const char *const * stap_integer_suffixes);

  1137. /* A NULL-terminated array of prefixes used to mark a register name on
  1138.    the architecture's assembly.
  1139.    For example, on x86 the register name is written as:

  1141.     %eax ;; register eax

  1143.    in this case, this prefix would be the character `%'. */

  1145. extern const char *const * gdbarch_stap_register_prefixes (struct gdbarch *gdbarch);
  1146. extern void set_gdbarch_stap_register_prefixes (struct gdbarch *gdbarch, const char *const * stap_register_prefixes);

  1148. /* A NULL-terminated array of suffixes used to mark a register name on
  1149.    the architecture's assembly. */

  1151. extern const char *const * gdbarch_stap_register_suffixes (struct gdbarch *gdbarch);
  1152. extern void set_gdbarch_stap_register_suffixes (struct gdbarch *gdbarch, const char *const * stap_register_suffixes);

  1154. /* A NULL-terminated array of prefixes used to mark a register
  1155.    indirection on the architecture's assembly.
  1156.    For example, on x86 the register indirection is written as:

  1158.     (%eax) ;; indirecting eax

  1160.    in this case, this prefix would be the charater `('.

  1162.    Please note that we use the indirection prefix also for register
  1163.    displacement, e.g., `4(%eax)' on x86. */

  1165. extern const char *const * gdbarch_stap_register_indirection_prefixes (struct gdbarch *gdbarch);
  1166. extern void set_gdbarch_stap_register_indirection_prefixes (struct gdbarch *gdbarch, const char *const * stap_register_indirection_prefixes);

  1168. /* A NULL-terminated array of suffixes used to mark a register
  1169.    indirection on the architecture's assembly.
  1170.    For example, on x86 the register indirection is written as:

  1172.     (%eax) ;; indirecting eax

  1174.    in this case, this prefix would be the charater `)'.

  1176.    Please note that we use the indirection suffix also for register
  1177.    displacement, e.g., `4(%eax)' on x86. */

  1179. extern const char *const * gdbarch_stap_register_indirection_suffixes (struct gdbarch *gdbarch);
  1180. extern void set_gdbarch_stap_register_indirection_suffixes (struct gdbarch *gdbarch, const char *const * stap_register_indirection_suffixes);

  1182. /* Prefix(es) used to name a register using GDB's nomenclature.

  1184.    For example, on PPC a register is represented by a number in the assembly
  1185.    language (e.g., `10' is the 10th general-purpose register).  However,
  1186.    inside GDB this same register has an `r' appended to its name, so the 10th
  1187.    register would be represented as `r10' internally. */

  1189. extern const char * gdbarch_stap_gdb_register_prefix (struct gdbarch *gdbarch);
  1190. extern void set_gdbarch_stap_gdb_register_prefix (struct gdbarch *gdbarch, const char * stap_gdb_register_prefix);

  1192. /* Suffix used to name a register using GDB's nomenclature. */

  1194. extern const char * gdbarch_stap_gdb_register_suffix (struct gdbarch *gdbarch);
  1195. extern void set_gdbarch_stap_gdb_register_suffix (struct gdbarch *gdbarch, const char * stap_gdb_register_suffix);

  1197. /* Check if S is a single operand.

  1199.    Single operands can be:
  1200.     - Literal integers, e.g. `$10' on x86
  1201.     - Register access, e.g. `%eax' on x86
  1202.     - Register indirection, e.g. `(%eax)' on x86
  1203.     - Register displacement, e.g. `4(%eax)' on x86

  1205.    This function should check for these patterns on the string
  1206.    and return 1 if some were found, or zero otherwise.  Please try to match
  1207.    as much info as you can from the string, i.e., if you have to match
  1208.    something like `(%', do not match just the `('. */

  1210. extern int gdbarch_stap_is_single_operand_p (struct gdbarch *gdbarch);

  1212. ‌typedef int (gdbarch_stap_is_single_operand_ftype) (struct gdbarch *gdbarch, const char *s);
  1213. extern int gdbarch_stap_is_single_operand (struct gdbarch *gdbarch, const char *s);
  1214. extern void set_gdbarch_stap_is_single_operand (struct gdbarch *gdbarch, gdbarch_stap_is_single_operand_ftype *stap_is_single_operand);

  1216. /* Function used to handle a "special case" in the parser.

  1218.    A "special case" is considered to be an unknown token, i.e., a token
  1219.    that the parser does not know how to parse.  A good example of special
  1220.    case would be ARM's register displacement syntax:

  1222.     [R0, #4]  ;; displacing R0 by 4

  1224.    Since the parser assumes that a register displacement is of the form:

  1226.     <number> <indirection_prefix> <register_name> <indirection_suffix>

  1228.    it means that it will not be able to recognize and parse this odd syntax.
  1229.    Therefore, we should add a special case function that will handle this token.

  1231.    This function should generate the proper expression form of the expression
  1232.    using GDB's internal expression mechanism (e.g., `write_exp_elt_opcode'
  1233.    and so on).  It should also return 1 if the parsing was successful, or zero
  1234.    if the token was not recognized as a special token (in this case, returning
  1235.    zero means that the special parser is deferring the parsing to the generic
  1236.    parser), and should advance the buffer pointer (p->arg). */

  1238. extern int gdbarch_stap_parse_special_token_p (struct gdbarch *gdbarch);

  1240. ‌typedef int (gdbarch_stap_parse_special_token_ftype) (struct gdbarch *gdbarch, struct stap_parse_info *p);
  1241. extern int gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, struct stap_parse_info *p);
  1242. extern void set_gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, gdbarch_stap_parse_special_token_ftype *stap_parse_special_token);

  1244. /* True if the list of shared libraries is one and only for all
  1245.    processes, as opposed to a list of shared libraries per inferior.
  1246.    This usually means that all processes, although may or may not share
  1247.    an address space, will see the same set of symbols at the same
  1248.    addresses. */

  1250. extern int gdbarch_has_global_solist (struct gdbarch *gdbarch);
  1251. extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist);

  1253. /* On some targets, even though each inferior has its own private
  1254.    address space, the debug interface takes care of making breakpoints
  1255.    visible to all address spaces automatically.  For such cases,
  1256.    this property should be set to true. */

  1258. extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch);
  1259. extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints);

  1261. /* True if inferiors share an address space (e.g., uClinux). */

  1263. ‌typedef int (gdbarch_has_shared_address_space_ftype) (struct gdbarch *gdbarch);
  1264. extern int gdbarch_has_shared_address_space (struct gdbarch *gdbarch);
  1265. extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbarch_has_shared_address_space_ftype *has_shared_address_space);

  1267. /* True if a fast tracepoint can be set at an address. */

  1269. ‌typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
  1270. extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
  1271. extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at);

  1273. /* Return the "auto" target charset. */

  1275. ‌typedef const char * (gdbarch_auto_charset_ftype) (void);
  1276. extern const char * gdbarch_auto_charset (struct gdbarch *gdbarch);
  1277. extern void set_gdbarch_auto_charset (struct gdbarch *gdbarch, gdbarch_auto_charset_ftype *auto_charset);

  1279. /* Return the "auto" target wide charset. */

  1281. ‌typedef const char * (gdbarch_auto_wide_charset_ftype) (void);
  1282. extern const char * gdbarch_auto_wide_charset (struct gdbarch *gdbarch);
  1283. extern void set_gdbarch_auto_wide_charset (struct gdbarch *gdbarch, gdbarch_auto_wide_charset_ftype *auto_wide_charset);

  1285. /* If non-empty, this is a file extension that will be opened in place
  1286.    of the file extension reported by the shared library list.

  1288.    This is most useful for toolchains that use a post-linker tool,
  1289.    where the names of the files run on the target differ in extension
  1290.    compared to the names of the files GDB should load for debug info. */

  1292. extern const char * gdbarch_solib_symbols_extension (struct gdbarch *gdbarch);
  1293. extern void set_gdbarch_solib_symbols_extension (struct gdbarch *gdbarch, const char * solib_symbols_extension);

  1295. /* If true, the target OS has DOS-based file system semantics.  That
  1296.    is, absolute paths include a drive name, and the backslash is
  1297.    considered a directory separator. */

  1299. extern int gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch);
  1300. extern void set_gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch, int has_dos_based_file_system);

  1302. /* Generate bytecodes to collect the return address in a frame.
  1303.    Since the bytecodes run on the target, possibly with GDB not even
  1304.    connected, the full unwinding machinery is not available, and
  1305.    typically this function will issue bytecodes for one or more likely
  1306.    places that the return address may be found. */

  1308. ‌typedef void (gdbarch_gen_return_address_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
  1309. extern void gdbarch_gen_return_address (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
  1310. extern void set_gdbarch_gen_return_address (struct gdbarch *gdbarch, gdbarch_gen_return_address_ftype *gen_return_address);

  1312. /* Implement the "info proc" command. */

  1314. extern int gdbarch_info_proc_p (struct gdbarch *gdbarch);

  1316. ‌typedef void (gdbarch_info_proc_ftype) (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
  1317. extern void gdbarch_info_proc (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
  1318. extern void set_gdbarch_info_proc (struct gdbarch *gdbarch, gdbarch_info_proc_ftype *info_proc);

  1320. /* Implement the "info proc" command for core files.  Noe that there
  1321.    are two "info_proc"-like methods on gdbarch -- one for core files,
  1322.    one for live targets. */

  1324. extern int gdbarch_core_info_proc_p (struct gdbarch *gdbarch);

  1326. ‌typedef void (gdbarch_core_info_proc_ftype) (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
  1327. extern void gdbarch_core_info_proc (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
  1328. extern void set_gdbarch_core_info_proc (struct gdbarch *gdbarch, gdbarch_core_info_proc_ftype *core_info_proc);

  1330. /* Iterate over all objfiles in the order that makes the most sense
  1331.    for the architecture to make global symbol searches.

  1333.    CB is a callback function where OBJFILE is the objfile to be searched,
  1334.    and CB_DATA a pointer to user-defined data (the same data that is passed
  1335.    when calling this gdbarch method).  The iteration stops if this function
  1336.    returns nonzero.

  1338.    CB_DATA is a pointer to some user-defined data to be passed to
  1339.    the callback.

  1341.    If not NULL, CURRENT_OBJFILE corresponds to the objfile being
  1342.    inspected when the symbol search was requested. */

  1344. ‌typedef void (gdbarch_iterate_over_objfiles_in_search_order_ftype) (struct gdbarch *gdbarch, iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile);
  1345. extern void gdbarch_iterate_over_objfiles_in_search_order (struct gdbarch *gdbarch, iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile);
  1346. extern void set_gdbarch_iterate_over_objfiles_in_search_order (struct gdbarch *gdbarch, gdbarch_iterate_over_objfiles_in_search_order_ftype *iterate_over_objfiles_in_search_order);

  1348. /* Ravenscar arch-dependent ops. */

  1350. extern struct ravenscar_arch_ops * gdbarch_ravenscar_ops (struct gdbarch *gdbarch);
  1351. extern void set_gdbarch_ravenscar_ops (struct gdbarch *gdbarch, struct ravenscar_arch_ops * ravenscar_ops);

  1353. /* Return non-zero if the instruction at ADDR is a call; zero otherwise. */

  1355. ‌typedef int (gdbarch_insn_is_call_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
  1356. extern int gdbarch_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr);
  1357. extern void set_gdbarch_insn_is_call (struct gdbarch *gdbarch, gdbarch_insn_is_call_ftype *insn_is_call);

  1359. /* Return non-zero if the instruction at ADDR is a return; zero otherwise. */

  1361. ‌typedef int (gdbarch_insn_is_ret_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
  1362. extern int gdbarch_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr);
  1363. extern void set_gdbarch_insn_is_ret (struct gdbarch *gdbarch, gdbarch_insn_is_ret_ftype *insn_is_ret);

  1365. /* Return non-zero if the instruction at ADDR is a jump; zero otherwise. */

  1367. ‌typedef int (gdbarch_insn_is_jump_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
  1368. extern int gdbarch_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr);
  1369. extern void set_gdbarch_insn_is_jump (struct gdbarch *gdbarch, gdbarch_insn_is_jump_ftype *insn_is_jump);

  1371. /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
  1372.    Return 0 if *READPTR is already at the end of the buffer.
  1373.    Return -1 if there is insufficient buffer for a whole entry.
  1374.    Return 1 if an entry was read into *TYPEP and *VALP. */

  1376. extern int gdbarch_auxv_parse_p (struct gdbarch *gdbarch);

  1378. ‌typedef int (gdbarch_auxv_parse_ftype) (struct gdbarch *gdbarch, gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp);
  1379. extern int gdbarch_auxv_parse (struct gdbarch *gdbarch, gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp);
  1380. extern void set_gdbarch_auxv_parse (struct gdbarch *gdbarch, gdbarch_auxv_parse_ftype *auxv_parse);

  1382. /* Find the address range of the current inferior's vsyscall/vDSO, and
  1383.    write it to *RANGE.  If the vsyscall's length can't be determined, a
  1384.    range with zero length is returned.  Returns true if the vsyscall is
  1385.    found, false otherwise. */

  1387. ‌typedef int (gdbarch_vsyscall_range_ftype) (struct gdbarch *gdbarch, struct mem_range *range);
  1388. extern int gdbarch_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range);
  1389. extern void set_gdbarch_vsyscall_range (struct gdbarch *gdbarch, gdbarch_vsyscall_range_ftype *vsyscall_range);

  1391. /* Allocate SIZE bytes of PROT protected page aligned memory in inferior.
  1392.    PROT has GDB_MMAP_PROT_* bitmask format.
  1393.    Throw an error if it is not possible.  Returned address is always valid. */

  1395. ‌typedef CORE_ADDR (gdbarch_infcall_mmap_ftype) (CORE_ADDR size, unsigned prot);
  1396. extern CORE_ADDR gdbarch_infcall_mmap (struct gdbarch *gdbarch, CORE_ADDR size, unsigned prot);
  1397. extern void set_gdbarch_infcall_mmap (struct gdbarch *gdbarch, gdbarch_infcall_mmap_ftype *infcall_mmap);

  1399. /* Return string (caller has to use xfree for it) with options for GCC
  1400.    to produce code for this target, typically "-m64", "-m32" or "-m31".
  1401.    These options are put before CU's DW_AT_producer compilation options so that
  1402.    they can override it.  Method may also return NULL. */

  1404. ‌typedef char * (gdbarch_gcc_target_options_ftype) (struct gdbarch *gdbarch);
  1405. extern char * gdbarch_gcc_target_options (struct gdbarch *gdbarch);
  1406. extern void set_gdbarch_gcc_target_options (struct gdbarch *gdbarch, gdbarch_gcc_target_options_ftype *gcc_target_options);

  1408. /* Return a regular expression that matches names used by this
  1409.    architecture in GNU configury triplets.  The result is statically
  1410.    allocated and must not be freed.  The default implementation simply
  1411.    returns the BFD architecture name, which is correct in nearly every
  1412.    case. */

  1414. ‌typedef const char * (gdbarch_gnu_triplet_regexp_ftype) (struct gdbarch *gdbarch);
  1415. extern const char * gdbarch_gnu_triplet_regexp (struct gdbarch *gdbarch);
  1416. extern void set_gdbarch_gnu_triplet_regexp (struct gdbarch *gdbarch, gdbarch_gnu_triplet_regexp_ftype *gnu_triplet_regexp);

  1418. /* Definition for an unknown syscall, used basically in error-cases.  */
  1419. ‌#define UNKNOWN_SYSCALL (-1)

  1421. extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);


  1424. /* Mechanism for co-ordinating the selection of a specific
  1425.    architecture.

  1427.    GDB targets (*-tdep.c) can register an interest in a specific
  1428.    architecture.  Other GDB components can register a need to maintain
  1429.    per-architecture data.

  1431.    The mechanisms below ensures that there is only a loose connection
  1432.    between the set-architecture command and the various GDB
  1433.    components.  Each component can independently register their need
  1434.    to maintain architecture specific data with gdbarch.

  1436.    Pragmatics:

  1438.    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
  1439.    didn't scale.

  1441.    The more traditional mega-struct containing architecture specific
  1442.    data for all the various GDB components was also considered.  Since
  1443.    GDB is built from a variable number of (fairly independent)
  1444.    components it was determined that the global aproach was not
  1445.    applicable.  */


  1448. /* Register a new architectural family with GDB.

  1450.    Register support for the specified ARCHITECTURE with GDB.  When
  1451.    gdbarch determines that the specified architecture has been
  1452.    selected, the corresponding INIT function is called.

  1454.    --

  1456.    The INIT function takes two parameters: INFO which contains the
  1457.    information available to gdbarch about the (possibly new)
  1458.    architecture; ARCHES which is a list of the previously created
  1459.    ``struct gdbarch'' for this architecture.

  1461.    The INFO parameter is, as far as possible, be pre-initialized with
  1462.    information obtained from INFO.ABFD or the global defaults.

  1464.    The ARCHES parameter is a linked list (sorted most recently used)
  1465.    of all the previously created architures for this architecture
  1466.    family.  The (possibly NULL) ARCHES->gdbarch can used to access
  1467.    values from the previously selected architecture for this
  1468.    architecture family.

  1470.    The INIT function shall return any of: NULL - indicating that it
  1471.    doesn't recognize the selected architecture; an existing ``struct
  1472.    gdbarch'' from the ARCHES list - indicating that the new
  1473.    architecture is just a synonym for an earlier architecture (see
  1474.    gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
  1475.    - that describes the selected architecture (see gdbarch_alloc()).

  1477.    The DUMP_TDEP function shall print out all target specific values.
  1478.    Care should be taken to ensure that the function works in both the
  1479.    multi-arch and non- multi-arch cases.  */

  1481. ‌struct gdbarch_list
  1482. {
  1483.   struct gdbarch *gdbarch;
  1484.   struct gdbarch_list *next;
  1485. };

  1487. ‌struct gdbarch_info
  1488. {
  1489.   /* Use default: NULL (ZERO).  */
  1490.   const struct bfd_arch_info *bfd_arch_info;

  1492.   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
  1493.   enum bfd_endian byte_order;

  1495.   enum bfd_endian byte_order_for_code;

  1497.   /* Use default: NULL (ZERO).  */
  1498.   bfd *abfd;

  1500.   /* Use default: NULL (ZERO).  */
  1501.   struct gdbarch_tdep_info *tdep_info;

  1503.   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
  1504.   enum gdb_osabi osabi;

  1506.   /* Use default: NULL (ZERO).  */
  1507.   const struct target_desc *target_desc;
  1508. };

  1510. ‌typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
  1511. ‌typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);

  1513. /* DEPRECATED - use gdbarch_register() */
  1514. extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);

  1516. extern void gdbarch_register (enum bfd_architecture architecture,
  1517.                               gdbarch_init_ftype *,
  1518.                               gdbarch_dump_tdep_ftype *);


  1521. /* Return a freshly allocated, NULL terminated, array of the valid
  1522.    architecture names.  Since architectures are registered during the
  1523.    _initialize phase this function only returns useful information
  1524.    once initialization has been completed.  */

  1526. extern const char **gdbarch_printable_names (void);


  1529. /* Helper function.  Search the list of ARCHES for a GDBARCH that
  1530.    matches the information provided by INFO.  */

  1532. extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);


  1535. /* Helper function.  Create a preliminary ``struct gdbarch''.  Perform
  1536.    basic initialization using values obtained from the INFO and TDEP
  1537.    parameters.  set_gdbarch_*() functions are called to complete the
  1538.    initialization of the object.  */

  1540. extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);


  1543. /* Helper function.  Free a partially-constructed ``struct gdbarch''.
  1544.    It is assumed that the caller freeds the ``struct
  1545.    gdbarch_tdep''.  */

  1547. extern void gdbarch_free (struct gdbarch *);


  1550. /* Helper function.  Allocate memory from the ``struct gdbarch''
  1551.    obstack.  The memory is freed when the corresponding architecture
  1552.    is also freed.  */

  1554. extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
  1555. ‌#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
  1556. ‌#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))


  1559. /* Helper function.  Force an update of the current architecture.

  1561.    The actual architecture selected is determined by INFO, ``(gdb) set
  1562.    architecture'' et.al., the existing architecture and BFD's default
  1563.    architecture.  INFO should be initialized to zero and then selected
  1564.    fields should be updated.

  1566.    Returns non-zero if the update succeeds.  */

  1568. extern int gdbarch_update_p (struct gdbarch_info info);


  1571. /* Helper function.  Find an architecture matching info.

  1573.    INFO should be initialized using gdbarch_info_init, relevant fields
  1574.    set, and then finished using gdbarch_info_fill.

  1576.    Returns the corresponding architecture, or NULL if no matching
  1577.    architecture was found.  */

  1579. extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);


  1582. /* Helper function.  Set the target gdbarch to "gdbarch".  */

  1584. extern void set_target_gdbarch (struct gdbarch *gdbarch);


  1587. /* Register per-architecture data-pointer.

  1589.    Reserve space for a per-architecture data-pointer.  An identifier
  1590.    for the reserved data-pointer is returned.  That identifer should
  1591.    be saved in a local static variable.

  1593.    Memory for the per-architecture data shall be allocated using
  1594.    gdbarch_obstack_zalloc.  That memory will be deleted when the
  1595.    corresponding architecture object is deleted.

  1597.    When a previously created architecture is re-selected, the
  1598.    per-architecture data-pointer for that previous architecture is
  1599.    restored.  INIT() is not re-called.

  1601.    Multiple registrarants for any architecture are allowed (and
  1602.    strongly encouraged).  */

  1604. struct gdbarch_data;

  1606. ‌typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
  1607. extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
  1608. ‌typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
  1609. extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
  1610. extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
  1611.                                          struct gdbarch_data *data,
  1612.                                          void *pointer);

  1614. extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);


  1617. /* Set the dynamic target-system-dependent parameters (architecture,
  1618.    byte-order, ...) using information found in the BFD.  */

  1620. extern void set_gdbarch_from_file (bfd *);


  1623. /* Initialize the current architecture to the "first" one we find on
  1624.    our list.  */

  1626. extern void initialize_current_architecture (void);

  1628. /* gdbarch trace variable */
  1629. extern unsigned int gdbarch_debug;

  1631. extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);

  1633. #endif