1 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */ 2 3 /* Dynamic architecture support for GDB, the GNU debugger. 4 5 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 6 Free Software Foundation, Inc. 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 22 23 /* This file was created with the aid of ``gdbarch.sh''. 24 25 The Bourne shell script ``gdbarch.sh'' creates the files 26 ``new-gdbarch.c'' and ``new-gdbarch.h and then compares them 27 against the existing ``gdbarch.[hc]''. Any differences found 28 being reported. 29 30 If editing this file, please also run gdbarch.sh and merge any 31 changes into that script. Conversely, when making sweeping changes 32 to this file, modifying gdbarch.sh and using its output may prove 33 easier. */ 34 35 #ifndef GDBARCH_H 36 #define GDBARCH_H 37 38 struct floatformat; 39 struct ui_file; 40 struct frame_info; 41 struct value; 42 struct objfile; 43 struct obj_section; 44 struct minimal_symbol; 45 struct regcache; 46 struct reggroup; 47 struct regset; 48 struct disassemble_info; 49 struct target_ops; 50 struct obstack; 51 struct bp_target_info; 52 struct target_desc; 53 struct displaced_step_closure; 54 struct core_regset_section; 55 struct syscall; 56 57 /* The architecture associated with the connection to the target. 58 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. 64 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; 68 69 70 /* The following are pre-initialized by GDBARCH. */ 71 72 extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch); 73 /* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */ 74 75 extern int gdbarch_byte_order (struct gdbarch *gdbarch); 76 /* set_gdbarch_byte_order() - not applicable - pre-initialized. */ 77 78 extern int gdbarch_byte_order_for_code (struct gdbarch *gdbarch); 79 /* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized. */ 80 81 extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch); 82 /* set_gdbarch_osabi() - not applicable - pre-initialized. */ 83 84 extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch); 85 /* set_gdbarch_target_desc() - not applicable - pre-initialized. */ 86 87 88 /* The following are initialized by the target dependent code. */ 89 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. */ 92 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); 95 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: 99 100 Number of bits in a short or unsigned short for the target machine. */ 101 102 extern int gdbarch_short_bit (struct gdbarch *gdbarch); 103 extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit); 104 105 /* Number of bits in an int or unsigned int for the target machine. */ 106 107 extern int gdbarch_int_bit (struct gdbarch *gdbarch); 108 extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit); 109 110 /* Number of bits in a long or unsigned long for the target machine. */ 111 112 extern int gdbarch_long_bit (struct gdbarch *gdbarch); 113 extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit); 114 115 /* Number of bits in a long long or unsigned long long for the target 116 machine. */ 117 118 extern int gdbarch_long_long_bit (struct gdbarch *gdbarch); 119 extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit); 120 121 /* The ABI default bit-size and format for "float", "double", and "long 122 double". These bit/format pairs should eventually be combined into 123 a single object. For the moment, just initialize them as a pair. 124 Each format describes both the big and little endian layouts (if 125 useful). */ 126 127 extern int gdbarch_float_bit (struct gdbarch *gdbarch); 128 extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit); 129 130 extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch); 131 extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format); 132 133 extern int gdbarch_double_bit (struct gdbarch *gdbarch); 134 extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit); 135 136 extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch); 137 extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format); 138 139 extern int gdbarch_long_double_bit (struct gdbarch *gdbarch); 140 extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit); 141 142 extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch); 143 extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format); 144 145 /* For most targets, a pointer on the target and its representation as an 146 address in GDB have the same size and "look the same". For such a 147 target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit 148 / addr_bit will be set from it. 149 150 If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably 151 also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer 152 as well. 153 154 ptr_bit is the size of a pointer on the target */ 155 156 extern int gdbarch_ptr_bit (struct gdbarch *gdbarch); 157 extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit); 158 159 /* addr_bit is the size of a target address as represented in gdb */ 160 161 extern int gdbarch_addr_bit (struct gdbarch *gdbarch); 162 extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit); 163 164 /* One if `char' acts like `signed char', zero if `unsigned char'. */ 165 166 extern int gdbarch_char_signed (struct gdbarch *gdbarch); 167 extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed); 168 169 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch); 170 171 typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache); 172 extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache); 173 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc); 174 175 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch); 176 177 typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val); 178 extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val); 179 extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc); 180 181 /* Function for getting target's idea of a frame pointer. FIXME: GDB's 182 whole scheme for dealing with "frames" and "frame pointers" needs a 183 serious shakedown. */ 184 185 typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset); 186 extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset); 187 extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer); 188 189 extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch); 190 191 typedef void (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf); 192 extern void gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf); 193 extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read); 194 195 extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch); 196 197 typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf); 198 extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf); 199 extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write); 200 201 extern int gdbarch_num_regs (struct gdbarch *gdbarch); 202 extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs); 203 204 /* This macro gives the number of pseudo-registers that live in the 205 register namespace but do not get fetched or stored on the target. 206 These pseudo-registers may be aliases for other registers, 207 combinations of other registers, or they may be computed by GDB. */ 208 209 extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch); 210 extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs); 211 212 /* GDB's standard (or well known) register numbers. These can map onto 213 a real register or a pseudo (computed) register or not be defined at 214 all (-1). 215 gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */ 216 217 extern int gdbarch_sp_regnum (struct gdbarch *gdbarch); 218 extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum); 219 220 extern int gdbarch_pc_regnum (struct gdbarch *gdbarch); 221 extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum); 222 223 extern int gdbarch_ps_regnum (struct gdbarch *gdbarch); 224 extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum); 225 226 extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch); 227 extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum); 228 229 /* Convert stab register number (from `r' declaration) to a gdb REGNUM. */ 230 231 typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr); 232 extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr); 233 extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum); 234 235 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */ 236 237 typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr); 238 extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr); 239 extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum); 240 241 /* Convert from an sdb register number to an internal gdb register number. */ 242 243 typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr); 244 extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr); 245 extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum); 246 247 /* Provide a default mapping from a DWARF2 register number to a gdb REGNUM. */ 248 249 typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr); 250 extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr); 251 extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum); 252 253 typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr); 254 extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr); 255 extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name); 256 257 /* Return the type of a register specified by the architecture. Only 258 the register cache should call this function directly; others should 259 use "register_type". */ 260 261 extern int gdbarch_register_type_p (struct gdbarch *gdbarch); 262 263 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr); 264 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr); 265 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type); 266 267 /* See gdbint.texinfo, and PUSH_DUMMY_CALL. */ 268 269 extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch); 270 271 typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame); 272 extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame); 273 extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id); 274 275 /* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete 276 deprecated_fp_regnum. */ 277 278 extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch); 279 extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum); 280 281 /* See gdbint.texinfo. See infcall.c. */ 282 283 extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch); 284 285 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); 286 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); 287 extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call); 288 289 extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch); 290 extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location); 291 292 extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch); 293 294 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); 295 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); 296 extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code); 297 298 typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all); 299 extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all); 300 extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info); 301 302 extern int gdbarch_print_float_info_p (struct gdbarch *gdbarch); 303 304 typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args); 305 extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args); 306 extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info); 307 308 extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch); 309 310 typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args); 311 extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args); 312 extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info); 313 314 /* MAP a GDB RAW register number onto a simulator register number. See 315 also include/...-sim.h. */ 316 317 typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr); 318 extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr); 319 extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno); 320 321 typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum); 322 extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum); 323 extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register); 324 325 typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum); 326 extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum); 327 extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register); 328 329 /* setjmp/longjmp support. */ 330 331 extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch); 332 333 typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc); 334 extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc); 335 extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target); 336 337 extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch); 338 extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion); 339 340 typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type); 341 extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type); 342 extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p); 343 344 typedef void (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf); 345 extern void gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf); 346 extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value); 347 348 typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf); 349 extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf); 350 extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register); 351 352 /* Construct a value representing the contents of register REGNUM in 353 frame FRAME, interpreted as type TYPE. The routine needs to 354 allocate and return a struct value with all value attributes 355 (but not the value contents) filled in. */ 356 357 typedef struct value * (gdbarch_value_from_register_ftype) (struct type *type, int regnum, struct frame_info *frame); 358 extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_info *frame); 359 extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register); 360 361 typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf); 362 extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf); 363 extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address); 364 365 typedef void (gdbarch_address_to_pointer_ftype) (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr); 366 extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr); 367 extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer); 368 369 extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch); 370 371 typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf); 372 extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf); 373 extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address); 374 375 /* Return the return-value convention that will be used by FUNCTYPE 376 to return a value of type VALTYPE. FUNCTYPE may be NULL in which 377 case the return convention is computed based only on VALTYPE. 378 379 If READBUF is not NULL, extract the return value and save it in this buffer. 380 381 If WRITEBUF is not NULL, it contains a return value which will be 382 stored into the appropriate register. This can be used when we want 383 to force the value returned by a function (see the "return" command 384 for instance). */ 385 386 extern int gdbarch_return_value_p (struct gdbarch *gdbarch); 387 388 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); 389 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); 390 extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value); 391 392 typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip); 393 extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip); 394 extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue); 395 396 extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch); 397 398 typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip); 399 extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip); 400 extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue); 401 402 typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs); 403 extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs); 404 extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than); 405 406 typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr); 407 extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr); 408 extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc); 409 410 extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch); 411 412 typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr); 413 extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr); 414 extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address); 415 416 typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt); 417 extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt); 418 extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint); 419 420 typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt); 421 extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt); 422 extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint); 423 424 extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch); 425 extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break); 426 427 /* A function can be addressed by either it's "pointer" (possibly a 428 descriptor address) or "entry point" (first executable instruction). 429 The method "convert_from_func_ptr_addr" converting the former to the 430 latter. gdbarch_deprecated_function_start_offset is being used to implement 431 a simplified subset of that functionality - the function's address 432 corresponds to the "function pointer" and the function's start 433 corresponds to the "function entry point" - and hence is redundant. */ 434 435 extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch); 436 extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset); 437 438 /* Return the remote protocol register number associated with this 439 register. Normally the identity mapping. */ 440 441 typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno); 442 extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno); 443 extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number); 444 445 /* Fetch the target specific address used to represent a load module. */ 446 447 extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch); 448 449 typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile); 450 extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile); 451 extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address); 452 453 extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch); 454 extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip); 455 456 extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch); 457 458 typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame); 459 extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame); 460 extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc); 461 462 extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch); 463 464 typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame); 465 extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame); 466 extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp); 467 468 /* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame 469 frame-base. Enable frame-base before frame-unwind. */ 470 471 extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch); 472 473 typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame); 474 extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame); 475 extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args); 476 477 extern int gdbarch_frame_align_p (struct gdbarch *gdbarch); 478 479 typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address); 480 extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address); 481 extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align); 482 483 typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type); 484 extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type); 485 extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr); 486 487 extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch); 488 extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size); 489 490 typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ); 491 extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ); 492 extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr); 493 494 /* On some machines there are bits in addresses which are not really 495 part of the address, but are used by the kernel, the hardware, etc. 496 for special purposes. gdbarch_addr_bits_remove takes out any such bits so 497 we get a "real" address such as one would find in a symbol table. 498 This is used only for addresses of instructions, and even then I'm 499 not sure it's used in all contexts. It exists to deal with there 500 being a few stray bits in the PC which would mislead us, not as some 501 sort of generic thing to handle alignment or segmentation (it's 502 possible it should be in TARGET_READ_PC instead). */ 503 504 typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr); 505 extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr); 506 extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove); 507 508 /* It is not at all clear why gdbarch_smash_text_address is not folded into 509 gdbarch_addr_bits_remove. */ 510 511 typedef CORE_ADDR (gdbarch_smash_text_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr); 512 extern CORE_ADDR gdbarch_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr); 513 extern void set_gdbarch_smash_text_address (struct gdbarch *gdbarch, gdbarch_smash_text_address_ftype *smash_text_address); 514 515 /* FIXME/cagney/2001-01-18: This should be split in two. A target method that 516 indicates if the target needs software single step. An ISA method to 517 implement it. 518 519 FIXME/cagney/2001-01-18: This should be replaced with something that inserts 520 breakpoints using the breakpoint system instead of blatting memory directly 521 (as with rs6000). 522 523 FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the 524 target can single step. If not, then implement single step using breakpoints. 525 526 A return value of 1 means that the software_single_step breakpoints 527 were inserted; 0 means they were not. */ 528 529 extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch); 530 531 typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame); 532 extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame); 533 extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step); 534 535 /* Return non-zero if the processor is executing a delay slot and a 536 further single-step is needed before the instruction finishes. */ 537 538 extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch); 539 540 typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame); 541 extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame); 542 extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay); 543 544 /* FIXME: cagney/2003-08-28: Need to find a better way of selecting the 545 disassembler. Perhaps objdump can handle it? */ 546 547 typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info); 548 extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info); 549 extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn); 550 551 typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc); 552 extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc); 553 extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code); 554 555 /* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER 556 evaluates non-zero, this is the address where the debugger will place 557 a step-resume breakpoint to get us past the dynamic linker. */ 558 559 typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc); 560 extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc); 561 extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver); 562 563 /* Some systems also have trampoline code for returning from shared libs. */ 564 565 typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, char *name); 566 extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, char *name); 567 extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline); 568 569 /* A target might have problems with watchpoints as soon as the stack 570 frame of the current function has been destroyed. This mostly happens 571 as the first action in a funtion's epilogue. in_function_epilogue_p() 572 is defined to return a non-zero value if either the given addr is one 573 instruction after the stack destroying instruction up to the trailing 574 return instruction or if we can figure out that the stack frame has 575 already been invalidated regardless of the value of addr. Targets 576 which don't suffer from that problem could just let this functionality 577 untouched. */ 578 579 typedef int (gdbarch_in_function_epilogue_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr); 580 extern int gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR addr); 581 extern void set_gdbarch_in_function_epilogue_p (struct gdbarch *gdbarch, gdbarch_in_function_epilogue_p_ftype *in_function_epilogue_p); 582 583 typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym); 584 extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym); 585 extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special); 586 587 typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym); 588 extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym); 589 extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special); 590 591 extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch); 592 extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint); 593 594 extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch); 595 extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint); 596 597 extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch); 598 599 typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class); 600 extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class); 601 extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags); 602 603 extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch); 604 605 typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags); 606 extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags); 607 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); 608 609 extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch); 610 611 typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr); 612 extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr); 613 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); 614 615 /* Is a register in a group */ 616 617 typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup); 618 extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup); 619 extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p); 620 621 /* Fetch the pointer to the ith function argument. */ 622 623 extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch); 624 625 typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type); 626 extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type); 627 extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument); 628 629 /* Return the appropriate register set for a core file section with 630 name SECT_NAME and size SECT_SIZE. */ 631 632 extern int gdbarch_regset_from_core_section_p (struct gdbarch *gdbarch); 633 634 typedef const struct regset * (gdbarch_regset_from_core_section_ftype) (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size); 635 extern const struct regset * gdbarch_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size); 636 extern void set_gdbarch_regset_from_core_section (struct gdbarch *gdbarch, gdbarch_regset_from_core_section_ftype *regset_from_core_section); 637 638 /* When creating core dumps, some systems encode the PID in addition 639 to the LWP id in core file register section names. In those cases, the 640 "XXX" in ".reg/XXX" is encoded as [LWPID << 16 | PID]. This setting 641 is set to true for such architectures; false if "XXX" represents an LWP 642 or thread id with no special encoding. */ 643 644 extern int gdbarch_core_reg_section_encodes_pid (struct gdbarch *gdbarch); 645 extern void set_gdbarch_core_reg_section_encodes_pid (struct gdbarch *gdbarch, int core_reg_section_encodes_pid); 646 647 /* Supported register notes in a core file. */ 648 649 extern struct core_regset_section * gdbarch_core_regset_sections (struct gdbarch *gdbarch); 650 extern void set_gdbarch_core_regset_sections (struct gdbarch *gdbarch, struct core_regset_section * core_regset_sections); 651 652 /* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from 653 core file into buffer READBUF with length LEN. */ 654 655 extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch); 656 657 typedef LONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len); 658 extern LONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, LONGEST len); 659 extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries); 660 661 /* How the core_stratum layer converts a PTID from a core file to a 662 string. */ 663 664 extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch); 665 666 typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid); 667 extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid); 668 extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str); 669 670 /* BFD target to use when generating a core file. */ 671 672 extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch); 673 674 extern const char * gdbarch_gcore_bfd_target (struct gdbarch *gdbarch); 675 extern void set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch, const char * gcore_bfd_target); 676 677 /* If the elements of C++ vtables are in-place function descriptors rather 678 than normal function pointers (which may point to code or a descriptor), 679 set this to one. */ 680 681 extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch); 682 extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors); 683 684 /* Set if the least significant bit of the delta is used instead of the least 685 significant bit of the pfn for pointers to virtual member functions. */ 686 687 extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch); 688 extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta); 689 690 /* Advance PC to next instruction in order to skip a permanent breakpoint. */ 691 692 extern int gdbarch_skip_permanent_breakpoint_p (struct gdbarch *gdbarch); 693 694 typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache); 695 extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache); 696 extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint); 697 698 /* The maximum length of an instruction on this architecture. */ 699 700 extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch); 701 702 extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch); 703 extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length); 704 705 /* Copy the instruction at FROM to TO, and make any adjustments 706 necessary to single-step it at that address. 707 708 REGS holds the state the thread's registers will have before 709 executing the copied instruction; the PC in REGS will refer to FROM, 710 not the copy at TO. The caller should update it to point at TO later. 711 712 Return a pointer to data of the architecture's choice to be passed 713 to gdbarch_displaced_step_fixup. Or, return NULL to indicate that 714 the instruction's effects have been completely simulated, with the 715 resulting state written back to REGS. 716 717 For a general explanation of displaced stepping and how GDB uses it, 718 see the comments in infrun.c. 719 720 The TO area is only guaranteed to have space for 721 gdbarch_max_insn_length (arch) bytes, so this function must not 722 write more bytes than that to that area. 723 724 If you do not provide this function, GDB assumes that the 725 architecture does not support displaced stepping. 726 727 If your architecture doesn't need to adjust instructions before 728 single-stepping them, consider using simple_displaced_step_copy_insn 729 here. */ 730 731 extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch); 732 733 typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); 734 extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); 735 extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn); 736 737 /* Return true if GDB should use hardware single-stepping to execute 738 the displaced instruction identified by CLOSURE. If false, 739 GDB will simply restart execution at the displaced instruction 740 location, and it is up to the target to ensure GDB will receive 741 control again (e.g. by placing a software breakpoint instruction 742 into the displaced instruction buffer). 743 744 The default implementation returns false on all targets that 745 provide a gdbarch_software_single_step routine, and true otherwise. */ 746 747 typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure); 748 extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure); 749 extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep); 750 751 /* Fix up the state resulting from successfully single-stepping a 752 displaced instruction, to give the result we would have gotten from 753 stepping the instruction in its original location. 754 755 REGS is the register state resulting from single-stepping the 756 displaced instruction. 757 758 CLOSURE is the result from the matching call to 759 gdbarch_displaced_step_copy_insn. 760 761 If you provide gdbarch_displaced_step_copy_insn.but not this 762 function, then GDB assumes that no fixup is needed after 763 single-stepping the instruction. 764 765 For a general explanation of displaced stepping and how GDB uses it, 766 see the comments in infrun.c. */ 767 768 extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch); 769 770 typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); 771 extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); 772 extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup); 773 774 /* Free a closure returned by gdbarch_displaced_step_copy_insn. 775 776 If you provide gdbarch_displaced_step_copy_insn, you must provide 777 this function as well. 778 779 If your architecture uses closures that don't need to be freed, then 780 you can use simple_displaced_step_free_closure here. 781 782 For a general explanation of displaced stepping and how GDB uses it, 783 see the comments in infrun.c. */ 784 785 typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure); 786 extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure); 787 extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure); 788 789 /* Return the address of an appropriate place to put displaced 790 instructions while we step over them. There need only be one such 791 place, since we're only stepping one thread over a breakpoint at a 792 time. 793 794 For a general explanation of displaced stepping and how GDB uses it, 795 see the comments in infrun.c. */ 796 797 typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch); 798 extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch); 799 extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location); 800 801 /* Refresh overlay mapped state for section OSECT. */ 802 803 extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch); 804 805 typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect); 806 extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect); 807 extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update); 808 809 extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch); 810 811 typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd); 812 extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd); 813 extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description); 814 815 /* Handle special encoding of static variables in stabs debug info. */ 816 817 extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch); 818 819 typedef char * (gdbarch_static_transform_name_ftype) (char *name); 820 extern char * gdbarch_static_transform_name (struct gdbarch *gdbarch, char *name); 821 extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name); 822 823 /* Set if the address in N_SO or N_FUN stabs may be zero. */ 824 825 extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch); 826 extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing); 827 828 /* Parse the instruction at ADDR storing in the record execution log 829 the registers REGCACHE and memory ranges that will be affected when 830 the instruction executes, along with their current values. 831 Return -1 if something goes wrong, 0 otherwise. */ 832 833 extern int gdbarch_process_record_p (struct gdbarch *gdbarch); 834 835 typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr); 836 extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr); 837 extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record); 838 839 /* Save process state after a signal. 840 Return -1 if something goes wrong, 0 otherwise. */ 841 842 extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch); 843 844 typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal); 845 extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum target_signal signal); 846 extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal); 847 848 /* Signal translation: translate inferior's signal (host's) number into 849 GDB's representation. */ 850 851 typedef enum target_signal (gdbarch_target_signal_from_host_ftype) (struct gdbarch *gdbarch, int signo); 852 extern enum target_signal gdbarch_target_signal_from_host (struct gdbarch *gdbarch, int signo); 853 extern void set_gdbarch_target_signal_from_host (struct gdbarch *gdbarch, gdbarch_target_signal_from_host_ftype *target_signal_from_host); 854 855 /* Signal translation: translate GDB's signal number into inferior's host 856 signal number. */ 857 858 typedef int (gdbarch_target_signal_to_host_ftype) (struct gdbarch *gdbarch, enum target_signal ts); 859 extern int gdbarch_target_signal_to_host (struct gdbarch *gdbarch, enum target_signal ts); 860 extern void set_gdbarch_target_signal_to_host (struct gdbarch *gdbarch, gdbarch_target_signal_to_host_ftype *target_signal_to_host); 861 862 /* Extra signal info inspection. 863 864 Return a type suitable to inspect extra signal information. */ 865 866 extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch); 867 868 typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch); 869 extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch); 870 extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type); 871 872 /* Record architecture-specific information from the symbol table. */ 873 874 extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch); 875 876 typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym); 877 extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym); 878 extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol); 879 880 /* Function for the 'catch syscall' feature. 881 Get architecture-specific system calls information from registers. */ 882 883 extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch); 884 885 typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid); 886 extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid); 887 extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number); 888 889 /* True if the list of shared libraries is one and only for all 890 processes, as opposed to a list of shared libraries per inferior. 891 This usually means that all processes, although may or may not share 892 an address space, will see the same set of symbols at the same 893 addresses. */ 894 895 extern int gdbarch_has_global_solist (struct gdbarch *gdbarch); 896 extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist); 897 898 /* On some targets, even though each inferior has its own private 899 address space, the debug interface takes care of making breakpoints 900 visible to all address spaces automatically. For such cases, 901 this property should be set to true. */ 902 903 extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch); 904 extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints); 905 906 /* Definition for an unknown syscall, used basically in error-cases. */ 907 #define UNKNOWN_SYSCALL (-1) 908 909 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch); 910 911 912 /* Mechanism for co-ordinating the selection of a specific 913 architecture. 914 915 GDB targets (*-tdep.c) can register an interest in a specific 916 architecture. Other GDB components can register a need to maintain 917 per-architecture data. 918 919 The mechanisms below ensures that there is only a loose connection 920 between the set-architecture command and the various GDB 921 components. Each component can independently register their need 922 to maintain architecture specific data with gdbarch. 923 924 Pragmatics: 925 926 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It 927 didn't scale. 928 929 The more traditional mega-struct containing architecture specific 930 data for all the various GDB components was also considered. Since 931 GDB is built from a variable number of (fairly independent) 932 components it was determined that the global aproach was not 933 applicable. */ 934 935 936 /* Register a new architectural family with GDB. 937 938 Register support for the specified ARCHITECTURE with GDB. When 939 gdbarch determines that the specified architecture has been 940 selected, the corresponding INIT function is called. 941 942 -- 943 944 The INIT function takes two parameters: INFO which contains the 945 information available to gdbarch about the (possibly new) 946 architecture; ARCHES which is a list of the previously created 947 ``struct gdbarch'' for this architecture. 948 949 The INFO parameter is, as far as possible, be pre-initialized with 950 information obtained from INFO.ABFD or the global defaults. 951 952 The ARCHES parameter is a linked list (sorted most recently used) 953 of all the previously created architures for this architecture 954 family. The (possibly NULL) ARCHES->gdbarch can used to access 955 values from the previously selected architecture for this 956 architecture family. 957 958 The INIT function shall return any of: NULL - indicating that it 959 doesn't recognize the selected architecture; an existing ``struct 960 gdbarch'' from the ARCHES list - indicating that the new 961 architecture is just a synonym for an earlier architecture (see 962 gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch'' 963 - that describes the selected architecture (see gdbarch_alloc()). 964 965 The DUMP_TDEP function shall print out all target specific values. 966 Care should be taken to ensure that the function works in both the 967 multi-arch and non- multi-arch cases. */ 968 969 struct gdbarch_list 970 { 971 struct gdbarch *gdbarch; 972 struct gdbarch_list *next; 973 }; 974 975 struct gdbarch_info 976 { 977 /* Use default: NULL (ZERO). */ 978 const struct bfd_arch_info *bfd_arch_info; 979 980 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */ 981 int byte_order; 982 983 int byte_order_for_code; 984 985 /* Use default: NULL (ZERO). */ 986 bfd *abfd; 987 988 /* Use default: NULL (ZERO). */ 989 struct gdbarch_tdep_info *tdep_info; 990 991 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */ 992 enum gdb_osabi osabi; 993 994 /* Use default: NULL (ZERO). */ 995 const struct target_desc *target_desc; 996 }; 997 998 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches); 999 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file); 1000 1001 /* DEPRECATED - use gdbarch_register() */ 1002 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *); 1003 1004 extern void gdbarch_register (enum bfd_architecture architecture, 1005 gdbarch_init_ftype *, 1006 gdbarch_dump_tdep_ftype *); 1007 1008 1009 /* Return a freshly allocated, NULL terminated, array of the valid 1010 architecture names. Since architectures are registered during the 1011 _initialize phase this function only returns useful information 1012 once initialization has been completed. */ 1013 1014 extern const char **gdbarch_printable_names (void); 1015 1016 1017 /* Helper function. Search the list of ARCHES for a GDBARCH that 1018 matches the information provided by INFO. */ 1019 1020 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info); 1021 1022 1023 /* Helper function. Create a preliminary ``struct gdbarch''. Perform 1024 basic initialization using values obtained from the INFO and TDEP 1025 parameters. set_gdbarch_*() functions are called to complete the 1026 initialization of the object. */ 1027 1028 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep); 1029 1030 1031 /* Helper function. Free a partially-constructed ``struct gdbarch''. 1032 It is assumed that the caller freeds the ``struct 1033 gdbarch_tdep''. */ 1034 1035 extern void gdbarch_free (struct gdbarch *); 1036 1037 1038 /* Helper function. Allocate memory from the ``struct gdbarch'' 1039 obstack. The memory is freed when the corresponding architecture 1040 is also freed. */ 1041 1042 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size); 1043 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE))) 1044 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE))) 1045 1046 1047 /* Helper function. Force an update of the current architecture. 1048 1049 The actual architecture selected is determined by INFO, ``(gdb) set 1050 architecture'' et.al., the existing architecture and BFD's default 1051 architecture. INFO should be initialized to zero and then selected 1052 fields should be updated. 1053 1054 Returns non-zero if the update succeeds */ 1055 1056 extern int gdbarch_update_p (struct gdbarch_info info); 1057 1058 1059 /* Helper function. Find an architecture matching info. 1060 1061 INFO should be initialized using gdbarch_info_init, relevant fields 1062 set, and then finished using gdbarch_info_fill. 1063 1064 Returns the corresponding architecture, or NULL if no matching 1065 architecture was found. */ 1066 1067 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info); 1068 1069 1070 /* Helper function. Set the global "target_gdbarch" to "gdbarch". 1071 1072 FIXME: kettenis/20031124: Of the functions that follow, only 1073 gdbarch_from_bfd is supposed to survive. The others will 1074 dissappear since in the future GDB will (hopefully) be truly 1075 multi-arch. However, for now we're still stuck with the concept of 1076 a single active architecture. */ 1077 1078 extern void deprecated_target_gdbarch_select_hack (struct gdbarch *gdbarch); 1079 1080 1081 /* Register per-architecture data-pointer. 1082 1083 Reserve space for a per-architecture data-pointer. An identifier 1084 for the reserved data-pointer is returned. That identifer should 1085 be saved in a local static variable. 1086 1087 Memory for the per-architecture data shall be allocated using 1088 gdbarch_obstack_zalloc. That memory will be deleted when the 1089 corresponding architecture object is deleted. 1090 1091 When a previously created architecture is re-selected, the 1092 per-architecture data-pointer for that previous architecture is 1093 restored. INIT() is not re-called. 1094 1095 Multiple registrarants for any architecture are allowed (and 1096 strongly encouraged). */ 1097 1098 struct gdbarch_data; 1099 1100 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack); 1101 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init); 1102 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch); 1103 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init); 1104 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch, 1105 struct gdbarch_data *data, 1106 void *pointer); 1107 1108 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *); 1109 1110 1111 /* Set the dynamic target-system-dependent parameters (architecture, 1112 byte-order, ...) using information found in the BFD */ 1113 1114 extern void set_gdbarch_from_file (bfd *); 1115 1116 1117 /* Initialize the current architecture to the "first" one we find on 1118 our list. */ 1119 1120 extern void initialize_current_architecture (void); 1121 1122 /* gdbarch trace variable */ 1123 extern int gdbarch_debug; 1124 1125 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file); 1126 1127 #endif 1128