1 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
3 /* Dynamic architecture support for GDB, the GNU debugger.
5 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
6 2007, 2008, 2009 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
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
44 struct minimal_symbol;
48 struct disassemble_info;
51 struct bp_target_info;
53 struct displaced_step_closure;
54 struct core_regset_section;
57 /* The architecture associated with the connection to the target.
59 The architecture vector provides some information that is really
60 a property of the target: The layout of certain packets, for instance;
61 or the solib_ops vector. Etc. To differentiate architecture accesses
62 to per-target properties from per-thread/per-frame/per-objfile properties,
63 accesses to per-target properties should be made through target_gdbarch.
65 Eventually, when support for multiple targets is implemented in
66 GDB, this global should be made target-specific. */
67 extern struct gdbarch *target_gdbarch;
70 /* The following are pre-initialized by GDBARCH. */
72 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
73 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */
75 extern int gdbarch_byte_order (struct gdbarch *gdbarch);
76 /* set_gdbarch_byte_order() - not applicable - pre-initialized. */
78 extern int gdbarch_byte_order_for_code (struct gdbarch *gdbarch);
79 /* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized. */
81 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
82 /* set_gdbarch_osabi() - not applicable - pre-initialized. */
84 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
85 /* set_gdbarch_target_desc() - not applicable - pre-initialized. */
88 /* The following are initialized by the target dependent code. */
90 /* The bit byte-order has to do just with numbering of bits in debugging symbols
91 and such. Conceptually, it's quite separate from byte/word byte order. */
93 extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
94 extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);
96 /* Number of bits in a char or unsigned char for the target machine.
97 Just like CHAR_BIT in <limits.h> but describes the target machine.
98 v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
100 Number of bits in a short or unsigned short for the target machine. */
102 extern int gdbarch_short_bit (struct gdbarch *gdbarch);
103 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
105 /* Number of bits in an int or unsigned int for the target machine. */
107 extern int gdbarch_int_bit (struct gdbarch *gdbarch);
108 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
110 /* Number of bits in a long or unsigned long for the target machine. */
112 extern int gdbarch_long_bit (struct gdbarch *gdbarch);
113 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
115 /* Number of bits in a long long or unsigned long long for the target
118 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
119 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
121 /* The ABI default bit-size and format for "half", "float", "double", and
122 "long double". These bit/format pairs should eventually be combined
123 into a single object. For the moment, just initialize them as a pair.
124 Each format describes both the big and little endian layouts (if
127 extern int gdbarch_half_bit (struct gdbarch *gdbarch);
128 extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit);
130 extern const struct floatformat ** gdbarch_half_format (struct gdbarch *gdbarch);
131 extern void set_gdbarch_half_format (struct gdbarch *gdbarch, const struct floatformat ** half_format);
133 extern int gdbarch_float_bit (struct gdbarch *gdbarch);
134 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
136 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
137 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
139 extern int gdbarch_double_bit (struct gdbarch *gdbarch);
140 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
142 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
143 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
145 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
146 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
148 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
149 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
151 /* For most targets, a pointer on the target and its representation as an
152 address in GDB have the same size and "look the same". For such a
153 target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
154 / addr_bit will be set from it.
156 If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
157 also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
160 ptr_bit is the size of a pointer on the target */
162 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
163 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
165 /* addr_bit is the size of a target address as represented in gdb */
167 extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
168 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
170 /* One if `char' acts like `signed char', zero if `unsigned char'. */
172 extern int gdbarch_char_signed (struct gdbarch *gdbarch);
173 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
175 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
177 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
178 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
179 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
181 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
183 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
184 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
185 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
187 /* Function for getting target's idea of a frame pointer. FIXME: GDB's
188 whole scheme for dealing with "frames" and "frame pointers" needs a
189 serious shakedown. */
191 typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
192 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
193 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
195 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
197 typedef void (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
198 extern void gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
199 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
201 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
203 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
204 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
205 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
207 extern int gdbarch_num_regs (struct gdbarch *gdbarch);
208 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
210 /* This macro gives the number of pseudo-registers that live in the
211 register namespace but do not get fetched or stored on the target.
212 These pseudo-registers may be aliases for other registers,
213 combinations of other registers, or they may be computed by GDB. */
215 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
216 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
218 /* GDB's standard (or well known) register numbers. These can map onto
219 a real register or a pseudo (computed) register or not be defined at
221 gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
223 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
224 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
226 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
227 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
229 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
230 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
232 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
233 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
235 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
237 typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr);
238 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
239 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
241 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
243 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr);
244 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
245 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
247 /* Convert from an sdb register number to an internal gdb register number. */
249 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr);
250 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
251 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
253 /* Provide a default mapping from a DWARF2 register number to a gdb REGNUM. */
255 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr);
256 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
257 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
259 typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
260 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
261 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
263 /* Return the type of a register specified by the architecture. Only
264 the register cache should call this function directly; others should
265 use "register_type". */
267 extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
269 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
270 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
271 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
273 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */
275 extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch);
277 typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame);
278 extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame);
279 extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);
281 /* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
282 deprecated_fp_regnum. */
284 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
285 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
287 /* See gdbint.texinfo. See infcall.c. */
289 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
291 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);
292 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);
293 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
295 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
296 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
298 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
300 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);
301 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);
302 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
304 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
305 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
306 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
308 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch);
310 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
311 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
312 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
314 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
316 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
317 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
318 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
320 /* MAP a GDB RAW register number onto a simulator register number. See
321 also include/...-sim.h. */
323 typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr);
324 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
325 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
327 typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum);
328 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
329 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
331 typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum);
332 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
333 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
335 /* setjmp/longjmp support. */
337 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
339 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
340 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
341 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
343 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
344 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
346 typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
347 extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
348 extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);
350 typedef void (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
351 extern void gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf);
352 extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);
354 typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
355 extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
356 extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);
358 /* Construct a value representing the contents of register REGNUM in
359 frame FRAME, interpreted as type TYPE. The routine needs to
360 allocate and return a struct value with all value attributes
361 (but not the value contents) filled in. */
363 typedef struct value * (gdbarch_value_from_register_ftype) (struct type *type, int regnum, struct frame_info *frame);
364 extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_info *frame);
365 extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);
367 typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
368 extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
369 extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);
371 typedef void (gdbarch_address_to_pointer_ftype) (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
372 extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
373 extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);
375 extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);
377 typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
378 extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
379 extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);
381 /* Return the return-value convention that will be used by FUNCTYPE
382 to return a value of type VALTYPE. FUNCTYPE may be NULL in which
383 case the return convention is computed based only on VALTYPE.
385 If READBUF is not NULL, extract the return value and save it in this buffer.
387 If WRITEBUF is not NULL, it contains a return value which will be
388 stored into the appropriate register. This can be used when we want
389 to force the value returned by a function (see the "return" command
392 extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
394 typedef enum return_value_convention (gdbarch_return_value_ftype) (struct gdbarch *gdbarch, struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
395 extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
396 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
398 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
399 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
400 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
402 extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch);
404 typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
405 extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
406 extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue);
408 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
409 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
410 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
412 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
413 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
414 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
416 /* Return the adjusted address and kind to use for Z0/Z1 packets.
417 KIND is usually the memory length of the breakpoint, but may have a
418 different target-specific meaning. */
420 typedef void (gdbarch_remote_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
421 extern void gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
422 extern void set_gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_remote_breakpoint_from_pc_ftype *remote_breakpoint_from_pc);
424 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
426 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
427 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
428 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
430 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
431 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
432 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
434 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
435 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
436 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
438 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
439 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
441 /* A function can be addressed by either it's "pointer" (possibly a
442 descriptor address) or "entry point" (first executable instruction).
443 The method "convert_from_func_ptr_addr" converting the former to the
444 latter. gdbarch_deprecated_function_start_offset is being used to implement
445 a simplified subset of that functionality - the function's address
446 corresponds to the "function pointer" and the function's start
447 corresponds to the "function entry point" - and hence is redundant. */
449 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
450 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
452 /* Return the remote protocol register number associated with this
453 register. Normally the identity mapping. */
455 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
456 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
457 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
459 /* Fetch the target specific address used to represent a load module. */
461 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
463 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
464 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
465 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
467 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
468 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
470 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
472 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
473 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
474 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
476 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
478 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
479 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
480 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
482 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
483 frame-base. Enable frame-base before frame-unwind. */
485 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
487 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
488 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
489 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
491 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
493 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
494 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
495 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
497 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
498 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
499 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
501 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
502 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
504 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
505 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
506 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
508 /* On some machines there are bits in addresses which are not really
509 part of the address, but are used by the kernel, the hardware, etc.
510 for special purposes. gdbarch_addr_bits_remove takes out any such bits so
511 we get a "real" address such as one would find in a symbol table.
512 This is used only for addresses of instructions, and even then I'm
513 not sure it's used in all contexts. It exists to deal with there
514 being a few stray bits in the PC which would mislead us, not as some
515 sort of generic thing to handle alignment or segmentation (it's
516 possible it should be in TARGET_READ_PC instead). */
518 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
519 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
520 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
522 /* It is not at all clear why gdbarch_smash_text_address is not folded into
523 gdbarch_addr_bits_remove. */
525 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
526 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr);
527 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address);
529 /* FIXME/cagney/2001-01-18: This should be split in two. A target method that
530 indicates if the target needs software single step. An ISA method to
533 FIXME/cagney/2001-01-18: This should be replaced with something that inserts
534 breakpoints using the breakpoint system instead of blatting memory directly
537 FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
538 target can single step. If not, then implement single step using breakpoints.
540 A return value of 1 means that the software_single_step breakpoints
541 were inserted; 0 means they were not. */
543 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
545 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
546 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
547 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
549 /* Return non-zero if the processor is executing a delay slot and a
550 further single-step is needed before the instruction finishes. */
552 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
554 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
555 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
556 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
558 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
559 disassembler. Perhaps objdump can handle it? */
561 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
562 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
563 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
565 typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
566 extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
567 extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);
569 /* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
570 evaluates non-zero, this is the address where the debugger will place
571 a step-resume breakpoint to get us past the dynamic linker. */
573 typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
574 extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
575 extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);
577 /* Some systems also have trampoline code for returning from shared libs. */
579 typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
580 extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char *name);
581 extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
583 /* A target might have problems with watchpoints as soon as the stack
584 frame of the current function has been destroyed. This mostly happens
585 as the first action in a funtion's epilogue. in_function_epilogue_p()
586 is defined to return a non-zero value if either the given addr is one
587 instruction after the stack destroying instruction up to the trailing
588 return instruction or if we can figure out that the stack frame has
589 already been invalidated regardless of the value of addr. Targets
590 which don't suffer from that problem could just let this functionality
593 typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
594 extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr);
595 extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p);
597 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
598 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
599 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
601 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
602 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
603 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
605 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
606 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
608 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
609 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
611 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
613 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
614 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
615 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
617 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
619 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
620 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
621 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);
623 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
625 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
626 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
627 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);
629 /* Is a register in a group */
631 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
632 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
633 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
635 /* Fetch the pointer to the ith function argument. */
637 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
639 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
640 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
641 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
643 /* Return the appropriate register set for a core file section with
644 name SECT_NAME and size SECT_SIZE. */
646 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch);
648 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
649 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size);
650 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section);
652 /* When creating core dumps, some systems encode the PID in addition
653 to the LWP id in core file register section names. In those cases, the
654 "XXX" in ".reg/XXX" is encoded as [LWPID << 16 | PID]. This setting
655 is set to true for such architectures; false if "XXX" represents an LWP
656 or thread id with no special encoding. */
658 extern int gdbarch_core_reg_section_encodes_pid (struct gdbarch *gdbarch);
659 extern void set_gdbarch_core_reg_section_encodes_pid (struct gdbarch *gdbarch, int core_reg_section_encodes_pid);
661 /* Supported register notes in a core file. */
663 extern struct core_regset_section * gdbarch_core_regset_sections (struct gdbarch *gdbarch);
664 extern void set_gdbarch_core_regset_sections (struct gdbarch *gdbarch, struct core_regset_section * core_regset_sections);
666 /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
667 core file into buffer READBUF with length LEN. */
669 extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);
671 typedef LONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
672 extern LONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len);
673 extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);
675 /* How the core_stratum layer converts a PTID from a core file to a
678 extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch);
680 typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
681 extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
682 extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str);
684 /* BFD target to use when generating a core file. */
686 extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch);
688 extern const char * gdbarch_gcore_bfd_target (struct gdbarch *gdbarch);
689 extern void set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch, const char * gcore_bfd_target);
691 /* If the elements of C++ vtables are in-place function descriptors rather
692 than normal function pointers (which may point to code or a descriptor),
695 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
696 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
698 /* Set if the least significant bit of the delta is used instead of the least
699 significant bit of the pfn for pointers to virtual member functions. */
701 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
702 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
704 /* Advance PC to next instruction in order to skip a permanent breakpoint. */
706 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch);
708 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
709 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
710 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
712 /* The maximum length of an instruction on this architecture. */
714 extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch);
716 extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch);
717 extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length);
719 /* Copy the instruction at FROM to TO, and make any adjustments
720 necessary to single-step it at that address.
722 REGS holds the state the thread's registers will have before
723 executing the copied instruction; the PC in REGS will refer to FROM,
724 not the copy at TO. The caller should update it to point at TO later.
726 Return a pointer to data of the architecture's choice to be passed
727 to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
728 the instruction's effects have been completely simulated, with the
729 resulting state written back to REGS.
731 For a general explanation of displaced stepping and how GDB uses it,
732 see the comments in infrun.c.
734 The TO area is only guaranteed to have space for
735 gdbarch_max_insn_length (arch) bytes, so this function must not
736 write more bytes than that to that area.
738 If you do not provide this function, GDB assumes that the
739 architecture does not support displaced stepping.
741 If your architecture doesn't need to adjust instructions before
742 single-stepping them, consider using simple_displaced_step_copy_insn
745 extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch);
747 typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
748 extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
749 extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);
751 /* Return true if GDB should use hardware single-stepping to execute
752 the displaced instruction identified by CLOSURE. If false,
753 GDB will simply restart execution at the displaced instruction
754 location, and it is up to the target to ensure GDB will receive
755 control again (e.g. by placing a software breakpoint instruction
756 into the displaced instruction buffer).
758 The default implementation returns false on all targets that
759 provide a gdbarch_software_single_step routine, and true otherwise. */
761 typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
762 extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
763 extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);
765 /* Fix up the state resulting from successfully single-stepping a
766 displaced instruction, to give the result we would have gotten from
767 stepping the instruction in its original location.
769 REGS is the register state resulting from single-stepping the
770 displaced instruction.
772 CLOSURE is the result from the matching call to
773 gdbarch_displaced_step_copy_insn.
775 If you provide gdbarch_displaced_step_copy_insn.but not this
776 function, then GDB assumes that no fixup is needed after
777 single-stepping the instruction.
779 For a general explanation of displaced stepping and how GDB uses it,
780 see the comments in infrun.c. */
782 extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch);
784 typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
785 extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
786 extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup);
788 /* Free a closure returned by gdbarch_displaced_step_copy_insn.
790 If you provide gdbarch_displaced_step_copy_insn, you must provide
791 this function as well.
793 If your architecture uses closures that don't need to be freed, then
794 you can use simple_displaced_step_free_closure here.
796 For a general explanation of displaced stepping and how GDB uses it,
797 see the comments in infrun.c. */
799 typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
800 extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
801 extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure);
803 /* Return the address of an appropriate place to put displaced
804 instructions while we step over them. There need only be one such
805 place, since we're only stepping one thread over a breakpoint at a
808 For a general explanation of displaced stepping and how GDB uses it,
809 see the comments in infrun.c. */
811 typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch);
812 extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch);
813 extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location);
815 /* Relocate an instruction to execute at a different address. OLDLOC
816 is the address in the inferior memory where the instruction to
817 relocate is currently at. On input, TO points to the destination
818 where we want the instruction to be copied (and possibly adjusted)
819 to. On output, it points to one past the end of the resulting
820 instruction(s). The effect of executing the instruction at TO shall
821 be the same as if executing it at FROM. For example, call
822 instructions that implicitly push the return address on the stack
823 should be adjusted to return to the instruction after OLDLOC;
824 relative branches, and other PC-relative instructions need the
825 offset adjusted; etc. */
827 extern int gdbarch_relocate_instruction_p (struct gdbarch *gdbarch);
829 typedef void (gdbarch_relocate_instruction_ftype) (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
830 extern void gdbarch_relocate_instruction (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
831 extern void set_gdbarch_relocate_instruction (struct gdbarch *gdbarch, gdbarch_relocate_instruction_ftype *relocate_instruction);
833 /* Refresh overlay mapped state for section OSECT. */
835 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
837 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
838 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
839 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
841 extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);
843 typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
844 extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
845 extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);
847 /* Handle special encoding of static variables in stabs debug info. */
849 extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);
851 typedef char * (gdbarch_static_transform_name_ftype) (char *name);
852 extern char * gdbarch_static_transform_name (struct gdbarch *gdbarch, char *name);
853 extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);
855 /* Set if the address in N_SO or N_FUN stabs may be zero. */
857 extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
858 extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);
860 /* Parse the instruction at ADDR storing in the record execution log
861 the registers REGCACHE and memory ranges that will be affected when
862 the instruction executes, along with their current values.
863 Return -1 if something goes wrong, 0 otherwise. */
865 extern int gdbarch_process_record_p (struct gdbarch *gdbarch);
867 typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
868 extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
869 extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record);
871 /* Save process state after a signal.
872 Return -1 if something goes wrong, 0 otherwise. */
874 extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch);
876 typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
877 extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal);
878 extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal);
880 /* Signal translation: translate inferior's signal (host's) number into
881 GDB's representation. */
883 typedef enum target_signal (gdbarch_target_signal_from_host_ftype) (struct gdbarch *gdbarch, int signo);
884 extern enum target_signal gdbarch_target_signal_from_host (struct gdbarch *gdbarch, int signo);
885 extern void set_gdbarch_target_signal_from_host (struct gdbarch *gdbarch, gdbarch_target_signal_from_host_ftype *target_signal_from_host);
887 /* Signal translation: translate GDB's signal number into inferior's host
890 typedef int (gdbarch_target_signal_to_host_ftype) (struct gdbarch *gdbarch, enum target_signal ts);
891 extern int gdbarch_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts);
892 extern void set_gdbarch_target_signal_to_host (struct gdbarch *gdbarch, gdbarch_target_signal_to_host_ftype *target_signal_to_host);
894 /* Extra signal info inspection.
896 Return a type suitable to inspect extra signal information. */
898 extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch);
900 typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch);
901 extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch);
902 extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type);
904 /* Record architecture-specific information from the symbol table. */
906 extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);
908 typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
909 extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
910 extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);
912 /* Function for the 'catch syscall' feature.
913 Get architecture-specific system calls information from registers. */
915 extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch);
917 typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
918 extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid);
919 extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number);
921 /* True if the list of shared libraries is one and only for all
922 processes, as opposed to a list of shared libraries per inferior.
923 This usually means that all processes, although may or may not share
924 an address space, will see the same set of symbols at the same
927 extern int gdbarch_has_global_solist (struct gdbarch *gdbarch);
928 extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist);
930 /* On some targets, even though each inferior has its own private
931 address space, the debug interface takes care of making breakpoints
932 visible to all address spaces automatically. For such cases,
933 this property should be set to true. */
935 extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch);
936 extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints);
938 /* True if inferiors share an address space (e.g., uClinux). */
940 typedef int (gdbarch_has_shared_address_space_ftype) (struct gdbarch *gdbarch);
941 extern int gdbarch_has_shared_address_space (struct gdbarch *gdbarch);
942 extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbarch_has_shared_address_space_ftype *has_shared_address_space);
944 /* True if a fast tracepoint can be set at an address. */
946 typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
947 extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, int *isize, char **msg);
948 extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at);
950 /* Return the "auto" target charset. */
952 typedef const char * (gdbarch_auto_charset_ftype) (void);
953 extern const char * gdbarch_auto_charset (struct gdbarch *gdbarch);
954 extern void set_gdbarch_auto_charset (struct gdbarch *gdbarch, gdbarch_auto_charset_ftype *auto_charset);
956 /* Return the "auto" target wide charset. */
958 typedef const char * (gdbarch_auto_wide_charset_ftype) (void);
959 extern const char * gdbarch_auto_wide_charset (struct gdbarch *gdbarch);
960 extern void set_gdbarch_auto_wide_charset (struct gdbarch *gdbarch, gdbarch_auto_wide_charset_ftype *auto_wide_charset);
962 /* If non-empty, this is a file extension that will be opened in place
963 of the file extension reported by the shared library list.
965 This is most useful for toolchains that use a post-linker tool,
966 where the names of the files run on the target differ in extension
967 compared to the names of the files GDB should load for debug info. */
969 extern const char * gdbarch_solib_symbols_extension (struct gdbarch *gdbarch);
970 extern void set_gdbarch_solib_symbols_extension (struct gdbarch *gdbarch, const char * solib_symbols_extension);
972 /* If true, the target OS has DOS-based file system semantics. That
973 is, absolute paths include a drive name, and the backslash is
974 considered a directory separator. */
976 extern int gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch);
977 extern void set_gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch, int has_dos_based_file_system);
979 /* Definition for an unknown syscall, used basically in error-cases. */
980 #define UNKNOWN_SYSCALL (-1)
982 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
985 /* Mechanism for co-ordinating the selection of a specific
988 GDB targets (*-tdep.c) can register an interest in a specific
989 architecture. Other GDB components can register a need to maintain
990 per-architecture data.
992 The mechanisms below ensures that there is only a loose connection
993 between the set-architecture command and the various GDB
994 components. Each component can independently register their need
995 to maintain architecture specific data with gdbarch.
999 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1002 The more traditional mega-struct containing architecture specific
1003 data for all the various GDB components was also considered. Since
1004 GDB is built from a variable number of (fairly independent)
1005 components it was determined that the global aproach was not
1009 /* Register a new architectural family with GDB.
1011 Register support for the specified ARCHITECTURE with GDB. When
1012 gdbarch determines that the specified architecture has been
1013 selected, the corresponding INIT function is called.
1017 The INIT function takes two parameters: INFO which contains the
1018 information available to gdbarch about the (possibly new)
1019 architecture; ARCHES which is a list of the previously created
1020 ``struct gdbarch'' for this architecture.
1022 The INFO parameter is, as far as possible, be pre-initialized with
1023 information obtained from INFO.ABFD or the global defaults.
1025 The ARCHES parameter is a linked list (sorted most recently used)
1026 of all the previously created architures for this architecture
1027 family. The (possibly NULL) ARCHES->gdbarch can used to access
1028 values from the previously selected architecture for this
1029 architecture family.
1031 The INIT function shall return any of: NULL - indicating that it
1032 doesn't recognize the selected architecture; an existing ``struct
1033 gdbarch'' from the ARCHES list - indicating that the new
1034 architecture is just a synonym for an earlier architecture (see
1035 gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
1036 - that describes the selected architecture (see gdbarch_alloc()).
1038 The DUMP_TDEP function shall print out all target specific values.
1039 Care should be taken to ensure that the function works in both the
1040 multi-arch and non- multi-arch cases. */
1044 struct gdbarch *gdbarch;
1045 struct gdbarch_list *next;
1050 /* Use default: NULL (ZERO). */
1051 const struct bfd_arch_info *bfd_arch_info;
1053 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1056 int byte_order_for_code;
1058 /* Use default: NULL (ZERO). */
1061 /* Use default: NULL (ZERO). */
1062 struct gdbarch_tdep_info *tdep_info;
1064 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1065 enum gdb_osabi osabi;
1067 /* Use default: NULL (ZERO). */
1068 const struct target_desc *target_desc;
1071 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1072 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1074 /* DEPRECATED - use gdbarch_register() */
1075 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1077 extern void gdbarch_register (enum bfd_architecture architecture,
1078 gdbarch_init_ftype *,
1079 gdbarch_dump_tdep_ftype *);
1082 /* Return a freshly allocated, NULL terminated, array of the valid
1083 architecture names. Since architectures are registered during the
1084 _initialize phase this function only returns useful information
1085 once initialization has been completed. */
1087 extern const char **gdbarch_printable_names (void);
1090 /* Helper function. Search the list of ARCHES for a GDBARCH that
1091 matches the information provided by INFO. */
1093 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1096 /* Helper function. Create a preliminary ``struct gdbarch''. Perform
1097 basic initialization using values obtained from the INFO and TDEP
1098 parameters. set_gdbarch_*() functions are called to complete the
1099 initialization of the object. */
1101 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1104 /* Helper function. Free a partially-constructed ``struct gdbarch''.
1105 It is assumed that the caller freeds the ``struct
1108 extern void gdbarch_free (struct gdbarch *);
1111 /* Helper function. Allocate memory from the ``struct gdbarch''
1112 obstack. The memory is freed when the corresponding architecture
1115 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1116 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1117 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1120 /* Helper function. Force an update of the current architecture.
1122 The actual architecture selected is determined by INFO, ``(gdb) set
1123 architecture'' et.al., the existing architecture and BFD's default
1124 architecture. INFO should be initialized to zero and then selected
1125 fields should be updated.
1127 Returns non-zero if the update succeeds */
1129 extern int gdbarch_update_p (struct gdbarch_info info);
1132 /* Helper function. Find an architecture matching info.
1134 INFO should be initialized using gdbarch_info_init, relevant fields
1135 set, and then finished using gdbarch_info_fill.
1137 Returns the corresponding architecture, or NULL if no matching
1138 architecture was found. */
1140 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1143 /* Helper function. Set the global "target_gdbarch" to "gdbarch".
1145 FIXME: kettenis/20031124: Of the functions that follow, only
1146 gdbarch_from_bfd is supposed to survive. The others will
1147 dissappear since in the future GDB will (hopefully) be truly
1148 multi-arch. However, for now we're still stuck with the concept of
1149 a single active architecture. */
1151 extern void deprecated_target_gdbarch_select_hack (struct gdbarch *gdbarch);
1154 /* Register per-architecture data-pointer.
1156 Reserve space for a per-architecture data-pointer. An identifier
1157 for the reserved data-pointer is returned. That identifer should
1158 be saved in a local static variable.
1160 Memory for the per-architecture data shall be allocated using
1161 gdbarch_obstack_zalloc. That memory will be deleted when the
1162 corresponding architecture object is deleted.
1164 When a previously created architecture is re-selected, the
1165 per-architecture data-pointer for that previous architecture is
1166 restored. INIT() is not re-called.
1168 Multiple registrarants for any architecture are allowed (and
1169 strongly encouraged). */
1171 struct gdbarch_data;
1173 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1174 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1175 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1176 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1177 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1178 struct gdbarch_data *data,
1181 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1184 /* Set the dynamic target-system-dependent parameters (architecture,
1185 byte-order, ...) using information found in the BFD */
1187 extern void set_gdbarch_from_file (bfd *);
1190 /* Initialize the current architecture to the "first" one we find on
1193 extern void initialize_current_architecture (void);
1195 /* gdbarch trace variable */
1196 extern int gdbarch_debug;
1198 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);