gdb/gdbarch.sh

   1 #!/bin/sh -u
   2
   3 # Architecture commands for GDB, the GNU debugger.
   4 #
   5 # Copyright (C) 1998-2014 Free Software Foundation, Inc.
   6 #
   7 # This file is part of GDB.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 3 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 # Make certain that the script is not running in an internationalized
  23 # environment.
  24 LANG=C ; export LANG
  25 LC_ALL=C ; export LC_ALL
  26
  27
  28 compare_new ()
  29 {
  30     file=$1
  31     if test ! -r ${file}
  32     then
  33         echo "${file} missing? cp new-${file} ${file}" 1>&2
  34     elif diff -u ${file} new-${file}
  35     then
  36         echo "${file} unchanged" 1>&2
  37     else
  38         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  39     fi
  40 }
  41
  42
  43 # Format of the input table
  44 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
  45
  46 do_read ()
  47 {
  48     comment=""
  49     class=""
  50     # On some SH's, 'read' trims leading and trailing whitespace by
  51     # default (e.g., bash), while on others (e.g., dash), it doesn't.
  52     # Set IFS to empty to disable the trimming everywhere.
  53     while IFS='' read line
  54     do
  55         if test "${line}" = ""
  56         then
  57             continue
  58         elif test "${line}" = "#" -a "${comment}" = ""
  59         then
  60             continue
  61         elif expr "${line}" : "#" > /dev/null
  62         then
  63             comment="${comment}
  64 ${line}"
  65         else
  66
  67             # The semantics of IFS varies between different SH's.  Some
  68             # treat ``::' as three fields while some treat it as just too.
  69             # Work around this by eliminating ``::'' ....
  70             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  71
  72             OFS="${IFS}" ; IFS="[:]"
  73             eval read ${read} <<EOF
  74 ${line}
  75 EOF
  76             IFS="${OFS}"
  77
  78             if test -n "${garbage_at_eol}"
  79             then
  80                 echo "Garbage at end-of-line in ${line}" 1>&2
  81                 kill $$
  82                 exit 1
  83             fi
  84
  85             # .... and then going back through each field and strip out those
  86             # that ended up with just that space character.
  87             for r in ${read}
  88             do
  89                 if eval test \"\${${r}}\" = \"\ \"
  90                 then
  91                     eval ${r}=""
  92                 fi
  93             done
  94
  95             case "${class}" in
  96                 m ) staticdefault="${predefault}" ;;
  97                 M ) staticdefault="0" ;;
  98                 * ) test "${staticdefault}" || staticdefault=0 ;;
  99             esac
 100
 101             case "${class}" in
 102             F | V | M )
 103                 case "${invalid_p}" in
 104                 "" )
 105                     if test -n "${predefault}"
 106                     then
 107                         #invalid_p="gdbarch->${function} == ${predefault}"
 108                         predicate="gdbarch->${function} != ${predefault}"
 109                     elif class_is_variable_p
 110                     then
 111                         predicate="gdbarch->${function} != 0"
 112                     elif class_is_function_p
 113                     then
 114                         predicate="gdbarch->${function} != NULL"
 115                     fi
 116                     ;;
 117                 * )
 118                     echo "Predicate function ${function} with invalid_p." 1>&2
 119                     kill $$
 120                     exit 1
 121                     ;;
 122                 esac
 123             esac
 124
 125             # PREDEFAULT is a valid fallback definition of MEMBER when
 126             # multi-arch is not enabled.  This ensures that the
 127             # default value, when multi-arch is the same as the
 128             # default value when not multi-arch.  POSTDEFAULT is
 129             # always a valid definition of MEMBER as this again
 130             # ensures consistency.
 131
 132             if [ -n "${postdefault}" ]
 133             then
 134                 fallbackdefault="${postdefault}"
 135             elif [ -n "${predefault}" ]
 136             then
 137                 fallbackdefault="${predefault}"
 138             else
 139                 fallbackdefault="0"
 140             fi
 141
 142             #NOT YET: See gdbarch.log for basic verification of
 143             # database
 144
 145             break
 146         fi
 147     done
 148     if [ -n "${class}" ]
 149     then
 150         true
 151     else
 152         false
 153     fi
 154 }
 155
 156
 157 fallback_default_p ()
 158 {
 159     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 160         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 161 }
 162
 163 class_is_variable_p ()
 164 {
 165     case "${class}" in
 166         *v* | *V* ) true ;;
 167         * ) false ;;
 168     esac
 169 }
 170
 171 class_is_function_p ()
 172 {
 173     case "${class}" in
 174         *f* | *F* | *m* | *M* ) true ;;
 175         * ) false ;;
 176     esac
 177 }
 178
 179 class_is_multiarch_p ()
 180 {
 181     case "${class}" in
 182         *m* | *M* ) true ;;
 183         * ) false ;;
 184     esac
 185 }
 186
 187 class_is_predicate_p ()
 188 {
 189     case "${class}" in
 190         *F* | *V* | *M* ) true ;;
 191         * ) false ;;
 192     esac
 193 }
 194
 195 class_is_info_p ()
 196 {
 197     case "${class}" in
 198         *i* ) true ;;
 199         * ) false ;;
 200     esac
 201 }
 202
 203
 204 # dump out/verify the doco
 205 for field in ${read}
 206 do
 207   case ${field} in
 208
 209     class ) : ;;
 210
 211         # # -> line disable
 212         # f -> function
 213         #   hiding a function
 214         # F -> function + predicate
 215         #   hiding a function + predicate to test function validity
 216         # v -> variable
 217         #   hiding a variable
 218         # V -> variable + predicate
 219         #   hiding a variable + predicate to test variables validity
 220         # i -> set from info
 221         #   hiding something from the ``struct info'' object
 222         # m -> multi-arch function
 223         #   hiding a multi-arch function (parameterised with the architecture)
 224         # M -> multi-arch function + predicate
 225         #   hiding a multi-arch function + predicate to test function validity
 226
 227     returntype ) : ;;
 228
 229         # For functions, the return type; for variables, the data type
 230
 231     function ) : ;;
 232
 233         # For functions, the member function name; for variables, the
 234         # variable name.  Member function names are always prefixed with
 235         # ``gdbarch_'' for name-space purity.
 236
 237     formal ) : ;;
 238
 239         # The formal argument list.  It is assumed that the formal
 240         # argument list includes the actual name of each list element.
 241         # A function with no arguments shall have ``void'' as the
 242         # formal argument list.
 243
 244     actual ) : ;;
 245
 246         # The list of actual arguments.  The arguments specified shall
 247         # match the FORMAL list given above.  Functions with out
 248         # arguments leave this blank.
 249
 250     staticdefault ) : ;;
 251
 252         # To help with the GDB startup a static gdbarch object is
 253         # created.  STATICDEFAULT is the value to insert into that
 254         # static gdbarch object.  Since this a static object only
 255         # simple expressions can be used.
 256
 257         # If STATICDEFAULT is empty, zero is used.
 258
 259     predefault ) : ;;
 260
 261         # An initial value to assign to MEMBER of the freshly
 262         # malloc()ed gdbarch object.  After initialization, the
 263         # freshly malloc()ed object is passed to the target
 264         # architecture code for further updates.
 265
 266         # If PREDEFAULT is empty, zero is used.
 267
 268         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 269         # INVALID_P are specified, PREDEFAULT will be used as the
 270         # default for the non- multi-arch target.
 271
 272         # A zero PREDEFAULT function will force the fallback to call
 273         # internal_error().
 274
 275         # Variable declarations can refer to ``gdbarch'' which will
 276         # contain the current architecture.  Care should be taken.
 277
 278     postdefault ) : ;;
 279
 280         # A value to assign to MEMBER of the new gdbarch object should
 281         # the target architecture code fail to change the PREDEFAULT
 282         # value.
 283
 284         # If POSTDEFAULT is empty, no post update is performed.
 285
 286         # If both INVALID_P and POSTDEFAULT are non-empty then
 287         # INVALID_P will be used to determine if MEMBER should be
 288         # changed to POSTDEFAULT.
 289
 290         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 291         # specified, POSTDEFAULT will be used as the default for the
 292         # non- multi-arch target (regardless of the value of
 293         # PREDEFAULT).
 294
 295         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 296
 297         # Variable declarations can refer to ``gdbarch'' which
 298         # will contain the current architecture.  Care should be
 299         # taken.
 300
 301     invalid_p ) : ;;
 302
 303         # A predicate equation that validates MEMBER.  Non-zero is
 304         # returned if the code creating the new architecture failed to
 305         # initialize MEMBER or the initialized the member is invalid.
 306         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 307         # that value.  If POSTDEFAULT is empty then internal_error()
 308         # is called.
 309
 310         # If INVALID_P is empty, a check that MEMBER is no longer
 311         # equal to PREDEFAULT is used.
 312
 313         # The expression ``0'' disables the INVALID_P check making
 314         # PREDEFAULT a legitimate value.
 315
 316         # See also PREDEFAULT and POSTDEFAULT.
 317
 318     print ) : ;;
 319
 320         # An optional expression that convers MEMBER to a value
 321         # suitable for formatting using %s.
 322
 323         # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
 324         # or plongest (anything else) is used.
 325
 326     garbage_at_eol ) : ;;
 327
 328         # Catches stray fields.
 329
 330     *)
 331         echo "Bad field ${field}"
 332         exit 1;;
 333   esac
 334 done
 335
 336
 337 function_list ()
 338 {
 339   # See below (DOCO) for description of each field
 340   cat <<EOF
 341 i:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (gdbarch)->printable_name
 342 #
 343 i:enum bfd_endian:byte_order:::BFD_ENDIAN_BIG
 344 i:enum bfd_endian:byte_order_for_code:::BFD_ENDIAN_BIG
 345 #
 346 i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
 347 #
 348 i:const struct target_desc *:target_desc:::::::host_address_to_string (gdbarch->target_desc)
 349
 350 # The bit byte-order has to do just with numbering of bits in debugging symbols
 351 # and such.  Conceptually, it's quite separate from byte/word byte order.
 352 v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
 353
 354 # Number of bits in a char or unsigned char for the target machine.
 355 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 356 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 357 #
 358 # Number of bits in a short or unsigned short for the target machine.
 359 v:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 360 # Number of bits in an int or unsigned int for the target machine.
 361 v:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 362 # Number of bits in a long or unsigned long for the target machine.
 363 v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 364 # Number of bits in a long long or unsigned long long for the target
 365 # machine.
 366 v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
 367 # Alignment of a long long or unsigned long long for the target
 368 # machine.
 369 v:int:long_long_align_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
 370
 371 # The ABI default bit-size and format for "half", "float", "double", and
 372 # "long double".  These bit/format pairs should eventually be combined
 373 # into a single object.  For the moment, just initialize them as a pair.
 374 # Each format describes both the big and little endian layouts (if
 375 # useful).
 376
 377 v:int:half_bit:::16:2*TARGET_CHAR_BIT::0
 378 v:const struct floatformat **:half_format:::::floatformats_ieee_half::pformat (gdbarch->half_format)
 379 v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 380 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format)
 381 v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 382 v:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (gdbarch->double_format)
 383 v:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
 384 v:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (gdbarch->long_double_format)
 385
 386 # For most targets, a pointer on the target and its representation as an
 387 # address in GDB have the same size and "look the same".  For such a
 388 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 389 # / addr_bit will be set from it.
 390 #
 391 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 392 # also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
 393 # gdbarch_address_to_pointer as well.
 394 #
 395 # ptr_bit is the size of a pointer on the target
 396 v:int:ptr_bit:::8 * sizeof (void*):gdbarch->int_bit::0
 397 # addr_bit is the size of a target address as represented in gdb
 398 v:int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (gdbarch):
 399 #
 400 # dwarf2_addr_size is the target address size as used in the Dwarf debug
 401 # info.  For .debug_frame FDEs, this is supposed to be the target address
 402 # size from the associated CU header, and which is equivalent to the
 403 # DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
 404 # Unfortunately there is no good way to determine this value.  Therefore
 405 # dwarf2_addr_size simply defaults to the target pointer size.
 406 #
 407 # dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
 408 # defined using the target's pointer size so far.
 409 #
 410 # Note that dwarf2_addr_size only needs to be redefined by a target if the
 411 # GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
 412 # and if Dwarf versions < 4 need to be supported.
 413 v:int:dwarf2_addr_size:::sizeof (void*):0:gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT:
 414 #
 415 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 416 v:int:char_signed:::1:-1:1
 417 #
 418 F:CORE_ADDR:read_pc:struct regcache *regcache:regcache
 419 F:void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
 420 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 421 # whole scheme for dealing with "frames" and "frame pointers" needs a
 422 # serious shakedown.
 423 m:void:virtual_frame_pointer:CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset:pc, frame_regnum, frame_offset:0:legacy_virtual_frame_pointer::0
 424 #
 425 M:enum register_status:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
 426 # Read a register into a new struct value.  If the register is wholly
 427 # or partly unavailable, this should call mark_value_bytes_unavailable
 428 # as appropriate.  If this is defined, then pseudo_register_read will
 429 # never be called.
 430 M:struct value *:pseudo_register_read_value:struct regcache *regcache, int cookednum:regcache, cookednum
 431 M:void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
 432 #
 433 v:int:num_regs:::0:-1
 434 # This macro gives the number of pseudo-registers that live in the
 435 # register namespace but do not get fetched or stored on the target.
 436 # These pseudo-registers may be aliases for other registers,
 437 # combinations of other registers, or they may be computed by GDB.
 438 v:int:num_pseudo_regs:::0:0::0
 439
 440 # Assemble agent expression bytecode to collect pseudo-register REG.
 441 # Return -1 if something goes wrong, 0 otherwise.
 442 M:int:ax_pseudo_register_collect:struct agent_expr *ax, int reg:ax, reg
 443
 444 # Assemble agent expression bytecode to push the value of pseudo-register
 445 # REG on the interpreter stack.
 446 # Return -1 if something goes wrong, 0 otherwise.
 447 M:int:ax_pseudo_register_push_stack:struct agent_expr *ax, int reg:ax, reg
 448
 449 # GDB's standard (or well known) register numbers.  These can map onto
 450 # a real register or a pseudo (computed) register or not be defined at
 451 # all (-1).
 452 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
 453 v:int:sp_regnum:::-1:-1::0
 454 v:int:pc_regnum:::-1:-1::0
 455 v:int:ps_regnum:::-1:-1::0
 456 v:int:fp0_regnum:::0:-1::0
 457 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
 458 m:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
 459 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
 460 m:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
 461 # Convert from an sdb register number to an internal gdb register number.
 462 m:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
 463 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
 464 m:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
 465 m:const char *:register_name:int regnr:regnr::0
 466
 467 # Return the type of a register specified by the architecture.  Only
 468 # the register cache should call this function directly; others should
 469 # use "register_type".
 470 M:struct type *:register_type:int reg_nr:reg_nr
 471
 472 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
 473 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
 474 # deprecated_fp_regnum.
 475 v:int:deprecated_fp_regnum:::-1:-1::0
 476
 477 M:CORE_ADDR:push_dummy_call: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:function, regcache, bp_addr, nargs, args, sp, struct_return, struct_addr
 478 v:int:call_dummy_location::::AT_ENTRY_POINT::0
 479 M:CORE_ADDR:push_dummy_code: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:sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache
 480
 481 m:void:print_registers_info:struct ui_file *file, struct frame_info *frame, int regnum, int all:file, frame, regnum, all::default_print_registers_info::0
 482 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 483 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 484 # MAP a GDB RAW register number onto a simulator register number.  See
 485 # also include/...-sim.h.
 486 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
 487 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
 488 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
 489
 490 # Determine the address where a longjmp will land and save this address
 491 # in PC.  Return nonzero on success.
 492 #
 493 # FRAME corresponds to the longjmp frame.
 494 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
 495
 496 #
 497 v:int:believe_pcc_promotion:::::::
 498 #
 499 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
 500 f:int:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep:frame, regnum, type, buf, optimizedp, unavailablep:0
 501 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
 502 # Construct a value representing the contents of register REGNUM in
 503 # frame FRAME_ID, interpreted as type TYPE.  The routine needs to
 504 # allocate and return a struct value with all value attributes
 505 # (but not the value contents) filled in.
 506 m:struct value *:value_from_register:struct type *type, int regnum, struct frame_id frame_id:type, regnum, frame_id::default_value_from_register::0
 507 #
 508 m:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
 509 m:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
 510 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
 511
 512 # Return the return-value convention that will be used by FUNCTION
 513 # to return a value of type VALTYPE.  FUNCTION may be NULL in which
 514 # case the return convention is computed based only on VALTYPE.
 515 #
 516 # If READBUF is not NULL, extract the return value and save it in this buffer.
 517 #
 518 # If WRITEBUF is not NULL, it contains a return value which will be
 519 # stored into the appropriate register.  This can be used when we want
 520 # to force the value returned by a function (see the "return" command
 521 # for instance).
 522 M:enum return_value_convention:return_value:struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:function, valtype, regcache, readbuf, writebuf
 523
 524 # Return true if the return value of function is stored in the first hidden
 525 # parameter.  In theory, this feature should be language-dependent, specified
 526 # by language and its ABI, such as C++.  Unfortunately, compiler may
 527 # implement it to a target-dependent feature.  So that we need such hook here
 528 # to be aware of this in GDB.
 529 m:int:return_in_first_hidden_param_p:struct type *type:type::default_return_in_first_hidden_param_p::0
 530
 531 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
 532 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
 533 # On some platforms, a single function may provide multiple entry points,
 534 # e.g. one that is used for function-pointer calls and a different one
 535 # that is used for direct function calls.
 536 # In order to ensure that breakpoints set on the function will trigger
 537 # no matter via which entry point the function is entered, a platform
 538 # may provide the skip_entrypoint callback.  It is called with IP set
 539 # to the main entry point of a function (as determined by the symbol table),
 540 # and should return the address of the innermost entry point, where the
 541 # actual breakpoint needs to be set.  Note that skip_entrypoint is used
 542 # by GDB common code even when debugging optimized code, where skip_prologue
 543 # is not used.
 544 M:CORE_ADDR:skip_entrypoint:CORE_ADDR ip:ip
 545
 546 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
 547 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
 548 # Return the adjusted address and kind to use for Z0/Z1 packets.
 549 # KIND is usually the memory length of the breakpoint, but may have a
 550 # different target-specific meaning.
 551 m:void:remote_breakpoint_from_pc:CORE_ADDR *pcptr, int *kindptr:pcptr, kindptr:0:default_remote_breakpoint_from_pc::0
 552 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
 553 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
 554 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
 555 v:CORE_ADDR:decr_pc_after_break:::0:::0
 556
 557 # A function can be addressed by either it's "pointer" (possibly a
 558 # descriptor address) or "entry point" (first executable instruction).
 559 # The method "convert_from_func_ptr_addr" converting the former to the
 560 # latter.  gdbarch_deprecated_function_start_offset is being used to implement
 561 # a simplified subset of that functionality - the function's address
 562 # corresponds to the "function pointer" and the function's start
 563 # corresponds to the "function entry point" - and hence is redundant.
 564
 565 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
 566
 567 # Return the remote protocol register number associated with this
 568 # register.  Normally the identity mapping.
 569 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
 570
 571 # Fetch the target specific address used to represent a load module.
 572 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
 573 #
 574 v:CORE_ADDR:frame_args_skip:::0:::0
 575 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
 576 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
 577 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 578 # frame-base.  Enable frame-base before frame-unwind.
 579 F:int:frame_num_args:struct frame_info *frame:frame
 580 #
 581 M:CORE_ADDR:frame_align:CORE_ADDR address:address
 582 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
 583 v:int:frame_red_zone_size
 584 #
 585 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
 586 # On some machines there are bits in addresses which are not really
 587 # part of the address, but are used by the kernel, the hardware, etc.
 588 # for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 589 # we get a "real" address such as one would find in a symbol table.
 590 # This is used only for addresses of instructions, and even then I'm
 591 # not sure it's used in all contexts.  It exists to deal with there
 592 # being a few stray bits in the PC which would mislead us, not as some
 593 # sort of generic thing to handle alignment or segmentation (it's
 594 # possible it should be in TARGET_READ_PC instead).
 595 m:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
 596
 597 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 598 # indicates if the target needs software single step.  An ISA method to
 599 # implement it.
 600 #
 601 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 602 # breakpoints using the breakpoint system instead of blatting memory directly
 603 # (as with rs6000).
 604 #
 605 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 606 # target can single step.  If not, then implement single step using breakpoints.
 607 #
 608 # A return value of 1 means that the software_single_step breakpoints
 609 # were inserted; 0 means they were not.
 610 F:int:software_single_step:struct frame_info *frame:frame
 611
 612 # Return non-zero if the processor is executing a delay slot and a
 613 # further single-step is needed before the instruction finishes.
 614 M:int:single_step_through_delay:struct frame_info *frame:frame
 615 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 616 # disassembler.  Perhaps objdump can handle it?
 617 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
 618 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
 619
 620
 621 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
 622 # evaluates non-zero, this is the address where the debugger will place
 623 # a step-resume breakpoint to get us past the dynamic linker.
 624 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
 625 # Some systems also have trampoline code for returning from shared libs.
 626 m:int:in_solib_return_trampoline:CORE_ADDR pc, const char *name:pc, name::generic_in_solib_return_trampoline::0
 627
 628 # A target might have problems with watchpoints as soon as the stack
 629 # frame of the current function has been destroyed.  This mostly happens
 630 # as the first action in a funtion's epilogue.  in_function_epilogue_p()
 631 # is defined to return a non-zero value if either the given addr is one
 632 # instruction after the stack destroying instruction up to the trailing
 633 # return instruction or if we can figure out that the stack frame has
 634 # already been invalidated regardless of the value of addr.  Targets
 635 # which don't suffer from that problem could just let this functionality
 636 # untouched.
 637 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
 638 # Process an ELF symbol in the minimal symbol table in a backend-specific
 639 # way.  Normally this hook is supposed to do nothing, however if required,
 640 # then this hook can be used to apply tranformations to symbols that are
 641 # considered special in some way.  For example the MIPS backend uses it
 642 # to interpret \`st_other' information to mark compressed code symbols so
 643 # that they can be treated in the appropriate manner in the processing of
 644 # the main symbol table and DWARF-2 records.
 645 F:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym
 646 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
 647 # Process a symbol in the main symbol table in a backend-specific way.
 648 # Normally this hook is supposed to do nothing, however if required,
 649 # then this hook can be used to apply tranformations to symbols that
 650 # are considered special in some way.  This is currently used by the
 651 # MIPS backend to make sure compressed code symbols have the ISA bit
 652 # set.  This in turn is needed for symbol values seen in GDB to match
 653 # the values used at the runtime by the program itself, for function
 654 # and label references.
 655 f:void:make_symbol_special:struct symbol *sym, struct objfile *objfile:sym, objfile::default_make_symbol_special::0
 656 # Adjust the address retrieved from a DWARF-2 record other than a line
 657 # entry in a backend-specific way.  Normally this hook is supposed to
 658 # return the address passed unchanged, however if that is incorrect for
 659 # any reason, then this hook can be used to fix the address up in the
 660 # required manner.  This is currently used by the MIPS backend to make
 661 # sure addresses in FDE, range records, etc. referring to compressed
 662 # code have the ISA bit set, matching line information and the symbol
 663 # table.
 664 f:CORE_ADDR:adjust_dwarf2_addr:CORE_ADDR pc:pc::default_adjust_dwarf2_addr::0
 665 # Adjust the address updated by a line entry in a backend-specific way.
 666 # Normally this hook is supposed to return the address passed unchanged,
 667 # however in the case of inconsistencies in these records, this hook can
 668 # be used to fix them up in the required manner.  This is currently used
 669 # by the MIPS backend to make sure all line addresses in compressed code
 670 # are presented with the ISA bit set, which is not always the case.  This
 671 # in turn ensures breakpoint addresses are correctly matched against the
 672 # stop PC.
 673 f:CORE_ADDR:adjust_dwarf2_line:CORE_ADDR addr, int rel:addr, rel::default_adjust_dwarf2_line::0
 674 v:int:cannot_step_breakpoint:::0:0::0
 675 v:int:have_nonsteppable_watchpoint:::0:0::0
 676 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
 677 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
 678
 679 # Return the appropriate type_flags for the supplied address class.
 680 # This function should return 1 if the address class was recognized and
 681 # type_flags was set, zero otherwise.
 682 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
 683 # Is a register in a group
 684 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
 685 # Fetch the pointer to the ith function argument.
 686 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
 687
 688 # Iterate over all supported register notes in a core file.  For each
 689 # supported register note section, the iterator must call CB and pass
 690 # CB_DATA unchanged.  If REGCACHE is not NULL, the iterator can limit
 691 # the supported register note sections based on the current register
 692 # values.  Otherwise it should enumerate all supported register note
 693 # sections.
 694 M:void:iterate_over_regset_sections:iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache:cb, cb_data, regcache
 695
 696 # Create core file notes
 697 M:char *:make_corefile_notes:bfd *obfd, int *note_size:obfd, note_size
 698
 699 # The elfcore writer hook to use to write Linux prpsinfo notes to core
 700 # files.  Most Linux architectures use the same prpsinfo32 or
 701 # prpsinfo64 layouts, and so won't need to provide this hook, as we
 702 # call the Linux generic routines in bfd to write prpsinfo notes by
 703 # default.
 704 F:char *:elfcore_write_linux_prpsinfo:bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info:obfd, note_data, note_size, info
 705
 706 # Find core file memory regions
 707 M:int:find_memory_regions:find_memory_region_ftype func, void *data:func, data
 708
 709 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 710 # core file into buffer READBUF with length LEN.  Return the number of bytes read
 711 # (zero indicates failure).
 712 # failed, otherwise, return the red length of READBUF.
 713 M:ULONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, ULONGEST len:readbuf, offset, len
 714
 715 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
 716 # libraries list from core file into buffer READBUF with length LEN.
 717 # Return the number of bytes read (zero indicates failure).
 718 M:ULONGEST:core_xfer_shared_libraries_aix:gdb_byte *readbuf, ULONGEST offset, ULONGEST len:readbuf, offset, len
 719
 720 # How the core target converts a PTID from a core file to a string.
 721 M:char *:core_pid_to_str:ptid_t ptid:ptid
 722
 723 # BFD target to use when generating a core file.
 724 V:const char *:gcore_bfd_target:::0:0:::pstring (gdbarch->gcore_bfd_target)
 725
 726 # If the elements of C++ vtables are in-place function descriptors rather
 727 # than normal function pointers (which may point to code or a descriptor),
 728 # set this to one.
 729 v:int:vtable_function_descriptors:::0:0::0
 730
 731 # Set if the least significant bit of the delta is used instead of the least
 732 # significant bit of the pfn for pointers to virtual member functions.
 733 v:int:vbit_in_delta:::0:0::0
 734
 735 # Advance PC to next instruction in order to skip a permanent breakpoint.
 736 f:void:skip_permanent_breakpoint:struct regcache *regcache:regcache:default_skip_permanent_breakpoint:default_skip_permanent_breakpoint::0
 737
 738 # The maximum length of an instruction on this architecture in bytes.
 739 V:ULONGEST:max_insn_length:::0:0
 740
 741 # Copy the instruction at FROM to TO, and make any adjustments
 742 # necessary to single-step it at that address.
 743 #
 744 # REGS holds the state the thread's registers will have before
 745 # executing the copied instruction; the PC in REGS will refer to FROM,
 746 # not the copy at TO.  The caller should update it to point at TO later.
 747 #
 748 # Return a pointer to data of the architecture's choice to be passed
 749 # to gdbarch_displaced_step_fixup.  Or, return NULL to indicate that
 750 # the instruction's effects have been completely simulated, with the
 751 # resulting state written back to REGS.
 752 #
 753 # For a general explanation of displaced stepping and how GDB uses it,
 754 # see the comments in infrun.c.
 755 #
 756 # The TO area is only guaranteed to have space for
 757 # gdbarch_max_insn_length (arch) bytes, so this function must not
 758 # write more bytes than that to that area.
 759 #
 760 # If you do not provide this function, GDB assumes that the
 761 # architecture does not support displaced stepping.
 762 #
 763 # If your architecture doesn't need to adjust instructions before
 764 # single-stepping them, consider using simple_displaced_step_copy_insn
 765 # here.
 766 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
 767
 768 # Return true if GDB should use hardware single-stepping to execute
 769 # the displaced instruction identified by CLOSURE.  If false,
 770 # GDB will simply restart execution at the displaced instruction
 771 # location, and it is up to the target to ensure GDB will receive
 772 # control again (e.g. by placing a software breakpoint instruction
 773 # into the displaced instruction buffer).
 774 #
 775 # The default implementation returns false on all targets that
 776 # provide a gdbarch_software_single_step routine, and true otherwise.
 777 m:int:displaced_step_hw_singlestep:struct displaced_step_closure *closure:closure::default_displaced_step_hw_singlestep::0
 778
 779 # Fix up the state resulting from successfully single-stepping a
 780 # displaced instruction, to give the result we would have gotten from
 781 # stepping the instruction in its original location.
 782 #
 783 # REGS is the register state resulting from single-stepping the
 784 # displaced instruction.
 785 #
 786 # CLOSURE is the result from the matching call to
 787 # gdbarch_displaced_step_copy_insn.
 788 #
 789 # If you provide gdbarch_displaced_step_copy_insn.but not this
 790 # function, then GDB assumes that no fixup is needed after
 791 # single-stepping the instruction.
 792 #
 793 # For a general explanation of displaced stepping and how GDB uses it,
 794 # see the comments in infrun.c.
 795 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
 796
 797 # Free a closure returned by gdbarch_displaced_step_copy_insn.
 798 #
 799 # If you provide gdbarch_displaced_step_copy_insn, you must provide
 800 # this function as well.
 801 #
 802 # If your architecture uses closures that don't need to be freed, then
 803 # you can use simple_displaced_step_free_closure here.
 804 #
 805 # For a general explanation of displaced stepping and how GDB uses it,
 806 # see the comments in infrun.c.
 807 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
 808
 809 # Return the address of an appropriate place to put displaced
 810 # instructions while we step over them.  There need only be one such
 811 # place, since we're only stepping one thread over a breakpoint at a
 812 # time.
 813 #
 814 # For a general explanation of displaced stepping and how GDB uses it,
 815 # see the comments in infrun.c.
 816 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
 817
 818 # Relocate an instruction to execute at a different address.  OLDLOC
 819 # is the address in the inferior memory where the instruction to
 820 # relocate is currently at.  On input, TO points to the destination
 821 # where we want the instruction to be copied (and possibly adjusted)
 822 # to.  On output, it points to one past the end of the resulting
 823 # instruction(s).  The effect of executing the instruction at TO shall
 824 # be the same as if executing it at FROM.  For example, call
 825 # instructions that implicitly push the return address on the stack
 826 # should be adjusted to return to the instruction after OLDLOC;
 827 # relative branches, and other PC-relative instructions need the
 828 # offset adjusted; etc.
 829 M:void:relocate_instruction:CORE_ADDR *to, CORE_ADDR from:to, from::NULL
 830
 831 # Refresh overlay mapped state for section OSECT.
 832 F:void:overlay_update:struct obj_section *osect:osect
 833
 834 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
 835
 836 # Handle special encoding of static variables in stabs debug info.
 837 F:const char *:static_transform_name:const char *name:name
 838 # Set if the address in N_SO or N_FUN stabs may be zero.
 839 v:int:sofun_address_maybe_missing:::0:0::0
 840
 841 # Parse the instruction at ADDR storing in the record execution log
 842 # the registers REGCACHE and memory ranges that will be affected when
 843 # the instruction executes, along with their current values.
 844 # Return -1 if something goes wrong, 0 otherwise.
 845 M:int:process_record:struct regcache *regcache, CORE_ADDR addr:regcache, addr
 846
 847 # Save process state after a signal.
 848 # Return -1 if something goes wrong, 0 otherwise.
 849 M:int:process_record_signal:struct regcache *regcache, enum gdb_signal signal:regcache, signal
 850
 851 # Signal translation: translate inferior's signal (target's) number
 852 # into GDB's representation.  The implementation of this method must
 853 # be host independent.  IOW, don't rely on symbols of the NAT_FILE
 854 # header (the nm-*.h files), the host <signal.h> header, or similar
 855 # headers.  This is mainly used when cross-debugging core files ---
 856 # "Live" targets hide the translation behind the target interface
 857 # (target_wait, target_resume, etc.).
 858 M:enum gdb_signal:gdb_signal_from_target:int signo:signo
 859
 860 # Signal translation: translate the GDB's internal signal number into
 861 # the inferior's signal (target's) representation.  The implementation
 862 # of this method must be host independent.  IOW, don't rely on symbols
 863 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
 864 # header, or similar headers.
 865 # Return the target signal number if found, or -1 if the GDB internal
 866 # signal number is invalid.
 867 M:int:gdb_signal_to_target:enum gdb_signal signal:signal
 868
 869 # Extra signal info inspection.
 870 #
 871 # Return a type suitable to inspect extra signal information.
 872 M:struct type *:get_siginfo_type:void:
 873
 874 # Record architecture-specific information from the symbol table.
 875 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
 876
 877 # Function for the 'catch syscall' feature.
 878
 879 # Get architecture-specific system calls information from registers.
 880 M:LONGEST:get_syscall_number:ptid_t ptid:ptid
 881
 882 # The filename of the XML syscall for this architecture.
 883 v:const char *:xml_syscall_file:::0:0::0:pstring (gdbarch->xml_syscall_file)
 884
 885 # Information about system calls from this architecture
 886 v:struct syscalls_info *:syscalls_info:::0:0::0:host_address_to_string (gdbarch->syscalls_info)
 887
 888 # SystemTap related fields and functions.
 889
 890 # A NULL-terminated array of prefixes used to mark an integer constant
 891 # on the architecture's assembly.
 892 # For example, on x86 integer constants are written as:
 893 #
 894 #  \$10 ;; integer constant 10
 895 #
 896 # in this case, this prefix would be the character \`\$\'.
 897 v:const char *const *:stap_integer_prefixes:::0:0::0:pstring_list (gdbarch->stap_integer_prefixes)
 898
 899 # A NULL-terminated array of suffixes used to mark an integer constant
 900 # on the architecture's assembly.
 901 v:const char *const *:stap_integer_suffixes:::0:0::0:pstring_list (gdbarch->stap_integer_suffixes)
 902
 903 # A NULL-terminated array of prefixes used to mark a register name on
 904 # the architecture's assembly.
 905 # For example, on x86 the register name is written as:
 906 #
 907 #  \%eax ;; register eax
 908 #
 909 # in this case, this prefix would be the character \`\%\'.
 910 v:const char *const *:stap_register_prefixes:::0:0::0:pstring_list (gdbarch->stap_register_prefixes)
 911
 912 # A NULL-terminated array of suffixes used to mark a register name on
 913 # the architecture's assembly.
 914 v:const char *const *:stap_register_suffixes:::0:0::0:pstring_list (gdbarch->stap_register_suffixes)
 915
 916 # A NULL-terminated array of prefixes used to mark a register
 917 # indirection on the architecture's assembly.
 918 # For example, on x86 the register indirection is written as:
 919 #
 920 #  \(\%eax\) ;; indirecting eax
 921 #
 922 # in this case, this prefix would be the charater \`\(\'.
 923 #
 924 # Please note that we use the indirection prefix also for register
 925 # displacement, e.g., \`4\(\%eax\)\' on x86.
 926 v:const char *const *:stap_register_indirection_prefixes:::0:0::0:pstring_list (gdbarch->stap_register_indirection_prefixes)
 927
 928 # A NULL-terminated array of suffixes used to mark a register
 929 # indirection on the architecture's assembly.
 930 # For example, on x86 the register indirection is written as:
 931 #
 932 #  \(\%eax\) ;; indirecting eax
 933 #
 934 # in this case, this prefix would be the charater \`\)\'.
 935 #
 936 # Please note that we use the indirection suffix also for register
 937 # displacement, e.g., \`4\(\%eax\)\' on x86.
 938 v:const char *const *:stap_register_indirection_suffixes:::0:0::0:pstring_list (gdbarch->stap_register_indirection_suffixes)
 939
 940 # Prefix(es) used to name a register using GDB's nomenclature.
 941 #
 942 # For example, on PPC a register is represented by a number in the assembly
 943 # language (e.g., \`10\' is the 10th general-purpose register).  However,
 944 # inside GDB this same register has an \`r\' appended to its name, so the 10th
 945 # register would be represented as \`r10\' internally.
 946 v:const char *:stap_gdb_register_prefix:::0:0::0:pstring (gdbarch->stap_gdb_register_prefix)
 947
 948 # Suffix used to name a register using GDB's nomenclature.
 949 v:const char *:stap_gdb_register_suffix:::0:0::0:pstring (gdbarch->stap_gdb_register_suffix)
 950
 951 # Check if S is a single operand.
 952 #
 953 # Single operands can be:
 954 #  \- Literal integers, e.g. \`\$10\' on x86
 955 #  \- Register access, e.g. \`\%eax\' on x86
 956 #  \- Register indirection, e.g. \`\(\%eax\)\' on x86
 957 #  \- Register displacement, e.g. \`4\(\%eax\)\' on x86
 958 #
 959 # This function should check for these patterns on the string
 960 # and return 1 if some were found, or zero otherwise.  Please try to match
 961 # as much info as you can from the string, i.e., if you have to match
 962 # something like \`\(\%\', do not match just the \`\(\'.
 963 M:int:stap_is_single_operand:const char *s:s
 964
 965 # Function used to handle a "special case" in the parser.
 966 #
 967 # A "special case" is considered to be an unknown token, i.e., a token
 968 # that the parser does not know how to parse.  A good example of special
 969 # case would be ARM's register displacement syntax:
 970 #
 971 #  [R0, #4]  ;; displacing R0 by 4
 972 #
 973 # Since the parser assumes that a register displacement is of the form:
 974 #
 975 #  <number> <indirection_prefix> <register_name> <indirection_suffix>
 976 #
 977 # it means that it will not be able to recognize and parse this odd syntax.
 978 # Therefore, we should add a special case function that will handle this token.
 979 #
 980 # This function should generate the proper expression form of the expression
 981 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
 982 # and so on).  It should also return 1 if the parsing was successful, or zero
 983 # if the token was not recognized as a special token (in this case, returning
 984 # zero means that the special parser is deferring the parsing to the generic
 985 # parser), and should advance the buffer pointer (p->arg).
 986 M:int:stap_parse_special_token:struct stap_parse_info *p:p
 987
 988
 989 # True if the list of shared libraries is one and only for all
 990 # processes, as opposed to a list of shared libraries per inferior.
 991 # This usually means that all processes, although may or may not share
 992 # an address space, will see the same set of symbols at the same
 993 # addresses.
 994 v:int:has_global_solist:::0:0::0
 995
 996 # On some targets, even though each inferior has its own private
 997 # address space, the debug interface takes care of making breakpoints
 998 # visible to all address spaces automatically.  For such cases,
 999 # this property should be set to true.
1000 v:int:has_global_breakpoints:::0:0::0
1001
1002 # True if inferiors share an address space (e.g., uClinux).
1003 m:int:has_shared_address_space:void:::default_has_shared_address_space::0
1004
1005 # True if a fast tracepoint can be set at an address.
1006 m:int:fast_tracepoint_valid_at:CORE_ADDR addr, int *isize, char **msg:addr, isize, msg::default_fast_tracepoint_valid_at::0
1007
1008 # Return the "auto" target charset.
1009 f:const char *:auto_charset:void::default_auto_charset:default_auto_charset::0
1010 # Return the "auto" target wide charset.
1011 f:const char *:auto_wide_charset:void::default_auto_wide_charset:default_auto_wide_charset::0
1012
1013 # If non-empty, this is a file extension that will be opened in place
1014 # of the file extension reported by the shared library list.
1015 #
1016 # This is most useful for toolchains that use a post-linker tool,
1017 # where the names of the files run on the target differ in extension
1018 # compared to the names of the files GDB should load for debug info.
1019 v:const char *:solib_symbols_extension:::::::pstring (gdbarch->solib_symbols_extension)
1020
1021 # If true, the target OS has DOS-based file system semantics.  That
1022 # is, absolute paths include a drive name, and the backslash is
1023 # considered a directory separator.
1024 v:int:has_dos_based_file_system:::0:0::0
1025
1026 # Generate bytecodes to collect the return address in a frame.
1027 # Since the bytecodes run on the target, possibly with GDB not even
1028 # connected, the full unwinding machinery is not available, and
1029 # typically this function will issue bytecodes for one or more likely
1030 # places that the return address may be found.
1031 m:void:gen_return_address:struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope:ax, value, scope::default_gen_return_address::0
1032
1033 # Implement the "info proc" command.
1034 M:void:info_proc:const char *args, enum info_proc_what what:args, what
1035
1036 # Implement the "info proc" command for core files.  Noe that there
1037 # are two "info_proc"-like methods on gdbarch -- one for core files,
1038 # one for live targets.
1039 M:void:core_info_proc:const char *args, enum info_proc_what what:args, what
1040
1041 # Iterate over all objfiles in the order that makes the most sense
1042 # for the architecture to make global symbol searches.
1043 #
1044 # CB is a callback function where OBJFILE is the objfile to be searched,
1045 # and CB_DATA a pointer to user-defined data (the same data that is passed
1046 # when calling this gdbarch method).  The iteration stops if this function
1047 # returns nonzero.
1048 #
1049 # CB_DATA is a pointer to some user-defined data to be passed to
1050 # the callback.
1051 #
1052 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1053 # inspected when the symbol search was requested.
1054 m:void:iterate_over_objfiles_in_search_order:iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile:cb, cb_data, current_objfile:0:default_iterate_over_objfiles_in_search_order::0
1055
1056 # Ravenscar arch-dependent ops.
1057 v:struct ravenscar_arch_ops *:ravenscar_ops:::NULL:NULL::0:host_address_to_string (gdbarch->ravenscar_ops)
1058
1059 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1060 m:int:insn_is_call:CORE_ADDR addr:addr::default_insn_is_call::0
1061
1062 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1063 m:int:insn_is_ret:CORE_ADDR addr:addr::default_insn_is_ret::0
1064
1065 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1066 m:int:insn_is_jump:CORE_ADDR addr:addr::default_insn_is_jump::0
1067
1068 # Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
1069 # Return 0 if *READPTR is already at the end of the buffer.
1070 # Return -1 if there is insufficient buffer for a whole entry.
1071 # Return 1 if an entry was read into *TYPEP and *VALP.
1072 M:int:auxv_parse:gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp:readptr, endptr, typep, valp
1073
1074 # Find the address range of the current inferior's vsyscall/vDSO, and
1075 # write it to *RANGE.  If the vsyscall's length can't be determined, a
1076 # range with zero length is returned.  Returns true if the vsyscall is
1077 # found, false otherwise.
1078 m:int:vsyscall_range:struct mem_range *range:range::default_vsyscall_range::0
1079
1080 # Allocate SIZE bytes of PROT protected page aligned memory in inferior.
1081 # PROT has GDB_MMAP_PROT_* bitmask format.
1082 # Throw an error if it is not possible.  Returned address is always valid.
1083 f:CORE_ADDR:infcall_mmap:CORE_ADDR size, unsigned prot:size, prot::default_infcall_mmap::0
1084
1085 # Return string (caller has to use xfree for it) with options for GCC
1086 # to produce code for this target, typically "-m64", "-m32" or "-m31".
1087 # These options are put before CU's DW_AT_producer compilation options so that
1088 # they can override it.  Method may also return NULL.
1089 m:char *:gcc_target_options:void:::default_gcc_target_options::0
1090 EOF
1091 }
1092
1093 #
1094 # The .log file
1095 #
1096 exec > new-gdbarch.log
1097 function_list | while do_read
1098 do
1099     cat <<EOF
1100 ${class} ${returntype} ${function} ($formal)
1101 EOF
1102     for r in ${read}
1103     do
1104         eval echo \"\ \ \ \ ${r}=\${${r}}\"
1105     done
1106     if class_is_predicate_p && fallback_default_p
1107     then
1108         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1109         kill $$
1110         exit 1
1111     fi
1112     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
1113     then
1114         echo "Error: postdefault is useless when invalid_p=0" 1>&2
1115         kill $$
1116         exit 1
1117     fi
1118     if class_is_multiarch_p
1119     then
1120         if class_is_predicate_p ; then :
1121         elif test "x${predefault}" = "x"
1122         then
1123             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1124             kill $$
1125             exit 1
1126         fi
1127     fi
1128     echo ""
1129 done
1130
1131 exec 1>&2
1132 compare_new gdbarch.log
1133
1134
1135 copyright ()
1136 {
1137 cat <<EOF
1138 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1139 /* vi:set ro: */
1140
1141 /* Dynamic architecture support for GDB, the GNU debugger.
1142
1143    Copyright (C) 1998-2014 Free Software Foundation, Inc.
1144
1145    This file is part of GDB.
1146
1147    This program is free software; you can redistribute it and/or modify
1148    it under the terms of the GNU General Public License as published by
1149    the Free Software Foundation; either version 3 of the License, or
1150    (at your option) any later version.
1151
1152    This program is distributed in the hope that it will be useful,
1153    but WITHOUT ANY WARRANTY; without even the implied warranty of
1154    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1155    GNU General Public License for more details.
1156
1157    You should have received a copy of the GNU General Public License
1158    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
1159
1160 /* This file was created with the aid of \`\`gdbarch.sh''.
1161
1162    The Bourne shell script \`\`gdbarch.sh'' creates the files
1163    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1164    against the existing \`\`gdbarch.[hc]''.  Any differences found
1165    being reported.
1166
1167    If editing this file, please also run gdbarch.sh and merge any
1168    changes into that script. Conversely, when making sweeping changes
1169    to this file, modifying gdbarch.sh and using its output may prove
1170    easier.  */
1171
1172 EOF
1173 }
1174
1175 #
1176 # The .h file
1177 #
1178
1179 exec > new-gdbarch.h
1180 copyright
1181 cat <<EOF
1182 #ifndef GDBARCH_H
1183 #define GDBARCH_H
1184
1185 #include "frame.h"
1186
1187 struct floatformat;
1188 struct ui_file;
1189 struct value;
1190 struct objfile;
1191 struct obj_section;
1192 struct minimal_symbol;
1193 struct regcache;
1194 struct reggroup;
1195 struct regset;
1196 struct disassemble_info;
1197 struct target_ops;
1198 struct obstack;
1199 struct bp_target_info;
1200 struct target_desc;
1201 struct objfile;
1202 struct symbol;
1203 struct displaced_step_closure;
1204 struct core_regset_section;
1205 struct syscall;
1206 struct agent_expr;
1207 struct axs_value;
1208 struct stap_parse_info;
1209 struct ravenscar_arch_ops;
1210 struct elf_internal_linux_prpsinfo;
1211 struct mem_range;
1212 struct syscalls_info;
1213
1214 /* The architecture associated with the inferior through the
1215    connection to the target.
1216
1217    The architecture vector provides some information that is really a
1218    property of the inferior, accessed through a particular target:
1219    ptrace operations; the layout of certain RSP packets; the solib_ops
1220    vector; etc.  To differentiate architecture accesses to
1221    per-inferior/target properties from
1222    per-thread/per-frame/per-objfile properties, accesses to
1223    per-inferior/target properties should be made through this
1224    gdbarch.  */
1225
1226 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'.  */
1227 extern struct gdbarch *target_gdbarch (void);
1228
1229 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1230    gdbarch  method.  */
1231
1232 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1233   (struct objfile *objfile, void *cb_data);
1234
1235 typedef void (iterate_over_regset_sections_cb)
1236   (const char *sect_name, int size, const struct regset *regset,
1237    const char *human_name, void *cb_data);
1238 EOF
1239
1240 # function typedef's
1241 printf "\n"
1242 printf "\n"
1243 printf "/* The following are pre-initialized by GDBARCH.  */\n"
1244 function_list | while do_read
1245 do
1246     if class_is_info_p
1247     then
1248         printf "\n"
1249         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1250         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized.  */\n"
1251     fi
1252 done
1253
1254 # function typedef's
1255 printf "\n"
1256 printf "\n"
1257 printf "/* The following are initialized by the target dependent code.  */\n"
1258 function_list | while do_read
1259 do
1260     if [ -n "${comment}" ]
1261     then
1262         echo "${comment}" | sed \
1263             -e '2 s,#,/*,' \
1264             -e '3,$ s,#,  ,' \
1265             -e '$ s,$, */,'
1266     fi
1267
1268     if class_is_predicate_p
1269     then
1270         printf "\n"
1271         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
1272     fi
1273     if class_is_variable_p
1274     then
1275         printf "\n"
1276         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1277         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
1278     fi
1279     if class_is_function_p
1280     then
1281         printf "\n"
1282         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1283         then
1284             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
1285         elif class_is_multiarch_p
1286         then
1287             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
1288         else
1289             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
1290         fi
1291         if [ "x${formal}" = "xvoid" ]
1292         then
1293           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1294         else
1295           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
1296         fi
1297         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
1298     fi
1299 done
1300
1301 # close it off
1302 cat <<EOF
1303
1304 /* Definition for an unknown syscall, used basically in error-cases.  */
1305 #define UNKNOWN_SYSCALL (-1)
1306
1307 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1308
1309
1310 /* Mechanism for co-ordinating the selection of a specific
1311    architecture.
1312
1313    GDB targets (*-tdep.c) can register an interest in a specific
1314    architecture.  Other GDB components can register a need to maintain
1315    per-architecture data.
1316
1317    The mechanisms below ensures that there is only a loose connection
1318    between the set-architecture command and the various GDB
1319    components.  Each component can independently register their need
1320    to maintain architecture specific data with gdbarch.
1321
1322    Pragmatics:
1323
1324    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
1325    didn't scale.
1326
1327    The more traditional mega-struct containing architecture specific
1328    data for all the various GDB components was also considered.  Since
1329    GDB is built from a variable number of (fairly independent)
1330    components it was determined that the global aproach was not
1331    applicable.  */
1332
1333
1334 /* Register a new architectural family with GDB.
1335
1336    Register support for the specified ARCHITECTURE with GDB.  When
1337    gdbarch determines that the specified architecture has been
1338    selected, the corresponding INIT function is called.
1339
1340    --
1341
1342    The INIT function takes two parameters: INFO which contains the
1343    information available to gdbarch about the (possibly new)
1344    architecture; ARCHES which is a list of the previously created
1345    \`\`struct gdbarch'' for this architecture.
1346
1347    The INFO parameter is, as far as possible, be pre-initialized with
1348    information obtained from INFO.ABFD or the global defaults.
1349
1350    The ARCHES parameter is a linked list (sorted most recently used)
1351    of all the previously created architures for this architecture
1352    family.  The (possibly NULL) ARCHES->gdbarch can used to access
1353    values from the previously selected architecture for this
1354    architecture family.
1355
1356    The INIT function shall return any of: NULL - indicating that it
1357    doesn't recognize the selected architecture; an existing \`\`struct
1358    gdbarch'' from the ARCHES list - indicating that the new
1359    architecture is just a synonym for an earlier architecture (see
1360    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1361    - that describes the selected architecture (see gdbarch_alloc()).
1362
1363    The DUMP_TDEP function shall print out all target specific values.
1364    Care should be taken to ensure that the function works in both the
1365    multi-arch and non- multi-arch cases.  */
1366
1367 struct gdbarch_list
1368 {
1369   struct gdbarch *gdbarch;
1370   struct gdbarch_list *next;
1371 };
1372
1373 struct gdbarch_info
1374 {
1375   /* Use default: NULL (ZERO).  */
1376   const struct bfd_arch_info *bfd_arch_info;
1377
1378   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
1379   enum bfd_endian byte_order;
1380
1381   enum bfd_endian byte_order_for_code;
1382
1383   /* Use default: NULL (ZERO).  */
1384   bfd *abfd;
1385
1386   /* Use default: NULL (ZERO).  */
1387   struct gdbarch_tdep_info *tdep_info;
1388
1389   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
1390   enum gdb_osabi osabi;
1391
1392   /* Use default: NULL (ZERO).  */
1393   const struct target_desc *target_desc;
1394 };
1395
1396 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1397 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1398
1399 /* DEPRECATED - use gdbarch_register() */
1400 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1401
1402 extern void gdbarch_register (enum bfd_architecture architecture,
1403                               gdbarch_init_ftype *,
1404                               gdbarch_dump_tdep_ftype *);
1405
1406
1407 /* Return a freshly allocated, NULL terminated, array of the valid
1408    architecture names.  Since architectures are registered during the
1409    _initialize phase this function only returns useful information
1410    once initialization has been completed.  */
1411
1412 extern const char **gdbarch_printable_names (void);
1413
1414
1415 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1416    matches the information provided by INFO.  */
1417
1418 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1419
1420
1421 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
1422    basic initialization using values obtained from the INFO and TDEP
1423    parameters.  set_gdbarch_*() functions are called to complete the
1424    initialization of the object.  */
1425
1426 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1427
1428
1429 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1430    It is assumed that the caller freeds the \`\`struct
1431    gdbarch_tdep''.  */
1432
1433 extern void gdbarch_free (struct gdbarch *);
1434
1435
1436 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1437    obstack.  The memory is freed when the corresponding architecture
1438    is also freed.  */
1439
1440 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1441 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1442 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1443
1444
1445 /* Helper function.  Force an update of the current architecture.
1446
1447    The actual architecture selected is determined by INFO, \`\`(gdb) set
1448    architecture'' et.al., the existing architecture and BFD's default
1449    architecture.  INFO should be initialized to zero and then selected
1450    fields should be updated.
1451
1452    Returns non-zero if the update succeeds.  */
1453
1454 extern int gdbarch_update_p (struct gdbarch_info info);
1455
1456
1457 /* Helper function.  Find an architecture matching info.
1458
1459    INFO should be initialized using gdbarch_info_init, relevant fields
1460    set, and then finished using gdbarch_info_fill.
1461
1462    Returns the corresponding architecture, or NULL if no matching
1463    architecture was found.  */
1464
1465 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1466
1467
1468 /* Helper function.  Set the target gdbarch to "gdbarch".  */
1469
1470 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1471
1472
1473 /* Register per-architecture data-pointer.
1474
1475    Reserve space for a per-architecture data-pointer.  An identifier
1476    for the reserved data-pointer is returned.  That identifer should
1477    be saved in a local static variable.
1478
1479    Memory for the per-architecture data shall be allocated using
1480    gdbarch_obstack_zalloc.  That memory will be deleted when the
1481    corresponding architecture object is deleted.
1482
1483    When a previously created architecture is re-selected, the
1484    per-architecture data-pointer for that previous architecture is
1485    restored.  INIT() is not re-called.
1486
1487    Multiple registrarants for any architecture are allowed (and
1488    strongly encouraged).  */
1489
1490 struct gdbarch_data;
1491
1492 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1493 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1494 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1495 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1496 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1497                                          struct gdbarch_data *data,
1498                                          void *pointer);
1499
1500 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1501
1502
1503 /* Set the dynamic target-system-dependent parameters (architecture,
1504    byte-order, ...) using information found in the BFD.  */
1505
1506 extern void set_gdbarch_from_file (bfd *);
1507
1508
1509 /* Initialize the current architecture to the "first" one we find on
1510    our list.  */
1511
1512 extern void initialize_current_architecture (void);
1513
1514 /* gdbarch trace variable */
1515 extern unsigned int gdbarch_debug;
1516
1517 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1518
1519 #endif
1520 EOF
1521 exec 1>&2
1522 #../move-if-change new-gdbarch.h gdbarch.h
1523 compare_new gdbarch.h
1524
1525
1526 #
1527 # C file
1528 #
1529
1530 exec > new-gdbarch.c
1531 copyright
1532 cat <<EOF
1533
1534 #include "defs.h"
1535 #include "arch-utils.h"
1536
1537 #include "gdbcmd.h"
1538 #include "inferior.h"
1539 #include "symcat.h"
1540
1541 #include "floatformat.h"
1542 #include "reggroups.h"
1543 #include "osabi.h"
1544 #include "gdb_obstack.h"
1545 #include "observer.h"
1546 #include "regcache.h"
1547 #include "objfiles.h"
1548
1549 /* Static function declarations */
1550
1551 static void alloc_gdbarch_data (struct gdbarch *);
1552
1553 /* Non-zero if we want to trace architecture code.  */
1554
1555 #ifndef GDBARCH_DEBUG
1556 #define GDBARCH_DEBUG 0
1557 #endif
1558 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1559 static void
1560 show_gdbarch_debug (struct ui_file *file, int from_tty,
1561                     struct cmd_list_element *c, const char *value)
1562 {
1563   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1564 }
1565
1566 static const char *
1567 pformat (const struct floatformat **format)
1568 {
1569   if (format == NULL)
1570     return "(null)";
1571   else
1572     /* Just print out one of them - this is only for diagnostics.  */
1573     return format[0]->name;
1574 }
1575
1576 static const char *
1577 pstring (const char *string)
1578 {
1579   if (string == NULL)
1580     return "(null)";
1581   return string;
1582 }
1583
1584 /* Helper function to print a list of strings, represented as "const
1585    char *const *".  The list is printed comma-separated.  */
1586
1587 static char *
1588 pstring_list (const char *const *list)
1589 {
1590   static char ret[100];
1591   const char *const *p;
1592   size_t offset = 0;
1593
1594   if (list == NULL)
1595     return "(null)";
1596
1597   ret[0] = '\0';
1598   for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1599     {
1600       size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1601       offset += 2 + s;
1602     }
1603
1604   if (offset > 0)
1605     {
1606       gdb_assert (offset - 2 < sizeof (ret));
1607       ret[offset - 2] = '\0';
1608     }
1609
1610   return ret;
1611 }
1612
1613 EOF
1614
1615 # gdbarch open the gdbarch object
1616 printf "\n"
1617 printf "/* Maintain the struct gdbarch object.  */\n"
1618 printf "\n"
1619 printf "struct gdbarch\n"
1620 printf "{\n"
1621 printf "  /* Has this architecture been fully initialized?  */\n"
1622 printf "  int initialized_p;\n"
1623 printf "\n"
1624 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1625 printf "  struct obstack *obstack;\n"
1626 printf "\n"
1627 printf "  /* basic architectural information.  */\n"
1628 function_list | while do_read
1629 do
1630     if class_is_info_p
1631     then
1632         printf "  ${returntype} ${function};\n"
1633     fi
1634 done
1635 printf "\n"
1636 printf "  /* target specific vector.  */\n"
1637 printf "  struct gdbarch_tdep *tdep;\n"
1638 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1639 printf "\n"
1640 printf "  /* per-architecture data-pointers.  */\n"
1641 printf "  unsigned nr_data;\n"
1642 printf "  void **data;\n"
1643 printf "\n"
1644 cat <<EOF
1645   /* Multi-arch values.
1646
1647      When extending this structure you must:
1648
1649      Add the field below.
1650
1651      Declare set/get functions and define the corresponding
1652      macro in gdbarch.h.
1653
1654      gdbarch_alloc(): If zero/NULL is not a suitable default,
1655      initialize the new field.
1656
1657      verify_gdbarch(): Confirm that the target updated the field
1658      correctly.
1659
1660      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1661      field is dumped out
1662
1663      get_gdbarch(): Implement the set/get functions (probably using
1664      the macro's as shortcuts).
1665
1666      */
1667
1668 EOF
1669 function_list | while do_read
1670 do
1671     if class_is_variable_p
1672     then
1673         printf "  ${returntype} ${function};\n"
1674     elif class_is_function_p
1675     then
1676         printf "  gdbarch_${function}_ftype *${function};\n"
1677     fi
1678 done
1679 printf "};\n"
1680
1681 # Create a new gdbarch struct
1682 cat <<EOF
1683
1684 /* Create a new \`\`struct gdbarch'' based on information provided by
1685    \`\`struct gdbarch_info''.  */
1686 EOF
1687 printf "\n"
1688 cat <<EOF
1689 struct gdbarch *
1690 gdbarch_alloc (const struct gdbarch_info *info,
1691                struct gdbarch_tdep *tdep)
1692 {
1693   struct gdbarch *gdbarch;
1694
1695   /* Create an obstack for allocating all the per-architecture memory,
1696      then use that to allocate the architecture vector.  */
1697   struct obstack *obstack = XNEW (struct obstack);
1698   obstack_init (obstack);
1699   gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1700   memset (gdbarch, 0, sizeof (*gdbarch));
1701   gdbarch->obstack = obstack;
1702
1703   alloc_gdbarch_data (gdbarch);
1704
1705   gdbarch->tdep = tdep;
1706 EOF
1707 printf "\n"
1708 function_list | while do_read
1709 do
1710     if class_is_info_p
1711     then
1712         printf "  gdbarch->${function} = info->${function};\n"
1713     fi
1714 done
1715 printf "\n"
1716 printf "  /* Force the explicit initialization of these.  */\n"
1717 function_list | while do_read
1718 do
1719     if class_is_function_p || class_is_variable_p
1720     then
1721         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1722         then
1723           printf "  gdbarch->${function} = ${predefault};\n"
1724         fi
1725     fi
1726 done
1727 cat <<EOF
1728   /* gdbarch_alloc() */
1729
1730   return gdbarch;
1731 }
1732 EOF
1733
1734 # Free a gdbarch struct.
1735 printf "\n"
1736 printf "\n"
1737 cat <<EOF
1738 /* Allocate extra space using the per-architecture obstack.  */
1739
1740 void *
1741 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1742 {
1743   void *data = obstack_alloc (arch->obstack, size);
1744
1745   memset (data, 0, size);
1746   return data;
1747 }
1748
1749
1750 /* Free a gdbarch struct.  This should never happen in normal
1751    operation --- once you've created a gdbarch, you keep it around.
1752    However, if an architecture's init function encounters an error
1753    building the structure, it may need to clean up a partially
1754    constructed gdbarch.  */
1755
1756 void
1757 gdbarch_free (struct gdbarch *arch)
1758 {
1759   struct obstack *obstack;
1760
1761   gdb_assert (arch != NULL);
1762   gdb_assert (!arch->initialized_p);
1763   obstack = arch->obstack;
1764   obstack_free (obstack, 0); /* Includes the ARCH.  */
1765   xfree (obstack);
1766 }
1767 EOF
1768
1769 # verify a new architecture
1770 cat <<EOF
1771
1772
1773 /* Ensure that all values in a GDBARCH are reasonable.  */
1774
1775 static void
1776 verify_gdbarch (struct gdbarch *gdbarch)
1777 {
1778   struct ui_file *log;
1779   struct cleanup *cleanups;
1780   long length;
1781   char *buf;
1782
1783   log = mem_fileopen ();
1784   cleanups = make_cleanup_ui_file_delete (log);
1785   /* fundamental */
1786   if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1787     fprintf_unfiltered (log, "\n\tbyte-order");
1788   if (gdbarch->bfd_arch_info == NULL)
1789     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1790   /* Check those that need to be defined for the given multi-arch level.  */
1791 EOF
1792 function_list | while do_read
1793 do
1794     if class_is_function_p || class_is_variable_p
1795     then
1796         if [ "x${invalid_p}" = "x0" ]
1797         then
1798             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1799         elif class_is_predicate_p
1800         then
1801             printf "  /* Skip verify of ${function}, has predicate.  */\n"
1802         # FIXME: See do_read for potential simplification
1803         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1804         then
1805             printf "  if (${invalid_p})\n"
1806             printf "    gdbarch->${function} = ${postdefault};\n"
1807         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1808         then
1809             printf "  if (gdbarch->${function} == ${predefault})\n"
1810             printf "    gdbarch->${function} = ${postdefault};\n"
1811         elif [ -n "${postdefault}" ]
1812         then
1813             printf "  if (gdbarch->${function} == 0)\n"
1814             printf "    gdbarch->${function} = ${postdefault};\n"
1815         elif [ -n "${invalid_p}" ]
1816         then
1817             printf "  if (${invalid_p})\n"
1818             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1819         elif [ -n "${predefault}" ]
1820         then
1821             printf "  if (gdbarch->${function} == ${predefault})\n"
1822             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1823         fi
1824     fi
1825 done
1826 cat <<EOF
1827   buf = ui_file_xstrdup (log, &length);
1828   make_cleanup (xfree, buf);
1829   if (length > 0)
1830     internal_error (__FILE__, __LINE__,
1831                     _("verify_gdbarch: the following are invalid ...%s"),
1832                     buf);
1833   do_cleanups (cleanups);
1834 }
1835 EOF
1836
1837 # dump the structure
1838 printf "\n"
1839 printf "\n"
1840 cat <<EOF
1841 /* Print out the details of the current architecture.  */
1842
1843 void
1844 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1845 {
1846   const char *gdb_nm_file = "<not-defined>";
1847
1848 #if defined (GDB_NM_FILE)
1849   gdb_nm_file = GDB_NM_FILE;
1850 #endif
1851   fprintf_unfiltered (file,
1852                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1853                       gdb_nm_file);
1854 EOF
1855 function_list | sort -t: -k 3 | while do_read
1856 do
1857     # First the predicate
1858     if class_is_predicate_p
1859     then
1860         printf "  fprintf_unfiltered (file,\n"
1861         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1862         printf "                      gdbarch_${function}_p (gdbarch));\n"
1863     fi
1864     # Print the corresponding value.
1865     if class_is_function_p
1866     then
1867         printf "  fprintf_unfiltered (file,\n"
1868         printf "                      \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1869         printf "                      host_address_to_string (gdbarch->${function}));\n"
1870     else
1871         # It is a variable
1872         case "${print}:${returntype}" in
1873             :CORE_ADDR )
1874                 fmt="%s"
1875                 print="core_addr_to_string_nz (gdbarch->${function})"
1876                 ;;
1877             :* )
1878                 fmt="%s"
1879                 print="plongest (gdbarch->${function})"
1880                 ;;
1881             * )
1882                 fmt="%s"
1883                 ;;
1884         esac
1885         printf "  fprintf_unfiltered (file,\n"
1886         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1887         printf "                      ${print});\n"
1888     fi
1889 done
1890 cat <<EOF
1891   if (gdbarch->dump_tdep != NULL)
1892     gdbarch->dump_tdep (gdbarch, file);
1893 }
1894 EOF
1895
1896
1897 # GET/SET
1898 printf "\n"
1899 cat <<EOF
1900 struct gdbarch_tdep *
1901 gdbarch_tdep (struct gdbarch *gdbarch)
1902 {
1903   if (gdbarch_debug >= 2)
1904     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1905   return gdbarch->tdep;
1906 }
1907 EOF
1908 printf "\n"
1909 function_list | while do_read
1910 do
1911     if class_is_predicate_p
1912     then
1913         printf "\n"
1914         printf "int\n"
1915         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1916         printf "{\n"
1917         printf "  gdb_assert (gdbarch != NULL);\n"
1918         printf "  return ${predicate};\n"
1919         printf "}\n"
1920     fi
1921     if class_is_function_p
1922     then
1923         printf "\n"
1924         printf "${returntype}\n"
1925         if [ "x${formal}" = "xvoid" ]
1926         then
1927           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1928         else
1929           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1930         fi
1931         printf "{\n"
1932         printf "  gdb_assert (gdbarch != NULL);\n"
1933         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1934         if class_is_predicate_p && test -n "${predefault}"
1935         then
1936             # Allow a call to a function with a predicate.
1937             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1938         fi
1939         printf "  if (gdbarch_debug >= 2)\n"
1940         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1941         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1942         then
1943             if class_is_multiarch_p
1944             then
1945                 params="gdbarch"
1946             else
1947                 params=""
1948             fi
1949         else
1950             if class_is_multiarch_p
1951             then
1952                 params="gdbarch, ${actual}"
1953             else
1954                 params="${actual}"
1955             fi
1956         fi
1957         if [ "x${returntype}" = "xvoid" ]
1958         then
1959           printf "  gdbarch->${function} (${params});\n"
1960         else
1961           printf "  return gdbarch->${function} (${params});\n"
1962         fi
1963         printf "}\n"
1964         printf "\n"
1965         printf "void\n"
1966         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1967         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1968         printf "{\n"
1969         printf "  gdbarch->${function} = ${function};\n"
1970         printf "}\n"
1971     elif class_is_variable_p
1972     then
1973         printf "\n"
1974         printf "${returntype}\n"
1975         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1976         printf "{\n"
1977         printf "  gdb_assert (gdbarch != NULL);\n"
1978         if [ "x${invalid_p}" = "x0" ]
1979         then
1980             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1981         elif [ -n "${invalid_p}" ]
1982         then
1983             printf "  /* Check variable is valid.  */\n"
1984             printf "  gdb_assert (!(${invalid_p}));\n"
1985         elif [ -n "${predefault}" ]
1986         then
1987             printf "  /* Check variable changed from pre-default.  */\n"
1988             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1989         fi
1990         printf "  if (gdbarch_debug >= 2)\n"
1991         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1992         printf "  return gdbarch->${function};\n"
1993         printf "}\n"
1994         printf "\n"
1995         printf "void\n"
1996         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1997         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1998         printf "{\n"
1999         printf "  gdbarch->${function} = ${function};\n"
2000         printf "}\n"
2001     elif class_is_info_p
2002     then
2003         printf "\n"
2004         printf "${returntype}\n"
2005         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
2006         printf "{\n"
2007         printf "  gdb_assert (gdbarch != NULL);\n"
2008         printf "  if (gdbarch_debug >= 2)\n"
2009         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
2010         printf "  return gdbarch->${function};\n"
2011         printf "}\n"
2012     fi
2013 done
2014
2015 # All the trailing guff
2016 cat <<EOF
2017
2018
2019 /* Keep a registry of per-architecture data-pointers required by GDB
2020    modules.  */
2021
2022 struct gdbarch_data
2023 {
2024   unsigned index;
2025   int init_p;
2026   gdbarch_data_pre_init_ftype *pre_init;
2027   gdbarch_data_post_init_ftype *post_init;
2028 };
2029
2030 struct gdbarch_data_registration
2031 {
2032   struct gdbarch_data *data;
2033   struct gdbarch_data_registration *next;
2034 };
2035
2036 struct gdbarch_data_registry
2037 {
2038   unsigned nr;
2039   struct gdbarch_data_registration *registrations;
2040 };
2041
2042 struct gdbarch_data_registry gdbarch_data_registry =
2043 {
2044   0, NULL,
2045 };
2046
2047 static struct gdbarch_data *
2048 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2049                        gdbarch_data_post_init_ftype *post_init)
2050 {
2051   struct gdbarch_data_registration **curr;
2052
2053   /* Append the new registration.  */
2054   for (curr = &gdbarch_data_registry.registrations;
2055        (*curr) != NULL;
2056        curr = &(*curr)->next);
2057   (*curr) = XNEW (struct gdbarch_data_registration);
2058   (*curr)->next = NULL;
2059   (*curr)->data = XNEW (struct gdbarch_data);
2060   (*curr)->data->index = gdbarch_data_registry.nr++;
2061   (*curr)->data->pre_init = pre_init;
2062   (*curr)->data->post_init = post_init;
2063   (*curr)->data->init_p = 1;
2064   return (*curr)->data;
2065 }
2066
2067 struct gdbarch_data *
2068 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2069 {
2070   return gdbarch_data_register (pre_init, NULL);
2071 }
2072
2073 struct gdbarch_data *
2074 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2075 {
2076   return gdbarch_data_register (NULL, post_init);
2077 }
2078
2079 /* Create/delete the gdbarch data vector.  */
2080
2081 static void
2082 alloc_gdbarch_data (struct gdbarch *gdbarch)
2083 {
2084   gdb_assert (gdbarch->data == NULL);
2085   gdbarch->nr_data = gdbarch_data_registry.nr;
2086   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2087 }
2088
2089 /* Initialize the current value of the specified per-architecture
2090    data-pointer.  */
2091
2092 void
2093 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2094                              struct gdbarch_data *data,
2095                              void *pointer)
2096 {
2097   gdb_assert (data->index < gdbarch->nr_data);
2098   gdb_assert (gdbarch->data[data->index] == NULL);
2099   gdb_assert (data->pre_init == NULL);
2100   gdbarch->data[data->index] = pointer;
2101 }
2102
2103 /* Return the current value of the specified per-architecture
2104    data-pointer.  */
2105
2106 void *
2107 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2108 {
2109   gdb_assert (data->index < gdbarch->nr_data);
2110   if (gdbarch->data[data->index] == NULL)
2111     {
2112       /* The data-pointer isn't initialized, call init() to get a
2113          value.  */
2114       if (data->pre_init != NULL)
2115         /* Mid architecture creation: pass just the obstack, and not
2116            the entire architecture, as that way it isn't possible for
2117            pre-init code to refer to undefined architecture
2118            fields.  */
2119         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2120       else if (gdbarch->initialized_p
2121                && data->post_init != NULL)
2122         /* Post architecture creation: pass the entire architecture
2123            (as all fields are valid), but be careful to also detect
2124            recursive references.  */
2125         {
2126           gdb_assert (data->init_p);
2127           data->init_p = 0;
2128           gdbarch->data[data->index] = data->post_init (gdbarch);
2129           data->init_p = 1;
2130         }
2131       else
2132         /* The architecture initialization hasn't completed - punt -
2133          hope that the caller knows what they are doing.  Once
2134          deprecated_set_gdbarch_data has been initialized, this can be
2135          changed to an internal error.  */
2136         return NULL;
2137       gdb_assert (gdbarch->data[data->index] != NULL);
2138     }
2139   return gdbarch->data[data->index];
2140 }
2141
2142
2143 /* Keep a registry of the architectures known by GDB.  */
2144
2145 struct gdbarch_registration
2146 {
2147   enum bfd_architecture bfd_architecture;
2148   gdbarch_init_ftype *init;
2149   gdbarch_dump_tdep_ftype *dump_tdep;
2150   struct gdbarch_list *arches;
2151   struct gdbarch_registration *next;
2152 };
2153
2154 static struct gdbarch_registration *gdbarch_registry = NULL;
2155
2156 static void
2157 append_name (const char ***buf, int *nr, const char *name)
2158 {
2159   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
2160   (*buf)[*nr] = name;
2161   *nr += 1;
2162 }
2163
2164 const char **
2165 gdbarch_printable_names (void)
2166 {
2167   /* Accumulate a list of names based on the registed list of
2168      architectures.  */
2169   int nr_arches = 0;
2170   const char **arches = NULL;
2171   struct gdbarch_registration *rego;
2172
2173   for (rego = gdbarch_registry;
2174        rego != NULL;
2175        rego = rego->next)
2176     {
2177       const struct bfd_arch_info *ap;
2178       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2179       if (ap == NULL)
2180         internal_error (__FILE__, __LINE__,
2181                         _("gdbarch_architecture_names: multi-arch unknown"));
2182       do
2183         {
2184           append_name (&arches, &nr_arches, ap->printable_name);
2185           ap = ap->next;
2186         }
2187       while (ap != NULL);
2188     }
2189   append_name (&arches, &nr_arches, NULL);
2190   return arches;
2191 }
2192
2193
2194 void
2195 gdbarch_register (enum bfd_architecture bfd_architecture,
2196                   gdbarch_init_ftype *init,
2197                   gdbarch_dump_tdep_ftype *dump_tdep)
2198 {
2199   struct gdbarch_registration **curr;
2200   const struct bfd_arch_info *bfd_arch_info;
2201
2202   /* Check that BFD recognizes this architecture */
2203   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2204   if (bfd_arch_info == NULL)
2205     {
2206       internal_error (__FILE__, __LINE__,
2207                       _("gdbarch: Attempt to register "
2208                         "unknown architecture (%d)"),
2209                       bfd_architecture);
2210     }
2211   /* Check that we haven't seen this architecture before.  */
2212   for (curr = &gdbarch_registry;
2213        (*curr) != NULL;
2214        curr = &(*curr)->next)
2215     {
2216       if (bfd_architecture == (*curr)->bfd_architecture)
2217         internal_error (__FILE__, __LINE__,
2218                         _("gdbarch: Duplicate registration "
2219                           "of architecture (%s)"),
2220                         bfd_arch_info->printable_name);
2221     }
2222   /* log it */
2223   if (gdbarch_debug)
2224     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2225                         bfd_arch_info->printable_name,
2226                         host_address_to_string (init));
2227   /* Append it */
2228   (*curr) = XNEW (struct gdbarch_registration);
2229   (*curr)->bfd_architecture = bfd_architecture;
2230   (*curr)->init = init;
2231   (*curr)->dump_tdep = dump_tdep;
2232   (*curr)->arches = NULL;
2233   (*curr)->next = NULL;
2234 }
2235
2236 void
2237 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2238                        gdbarch_init_ftype *init)
2239 {
2240   gdbarch_register (bfd_architecture, init, NULL);
2241 }
2242
2243
2244 /* Look for an architecture using gdbarch_info.  */
2245
2246 struct gdbarch_list *
2247 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2248                              const struct gdbarch_info *info)
2249 {
2250   for (; arches != NULL; arches = arches->next)
2251     {
2252       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2253         continue;
2254       if (info->byte_order != arches->gdbarch->byte_order)
2255         continue;
2256       if (info->osabi != arches->gdbarch->osabi)
2257         continue;
2258       if (info->target_desc != arches->gdbarch->target_desc)
2259         continue;
2260       return arches;
2261     }
2262   return NULL;
2263 }
2264
2265
2266 /* Find an architecture that matches the specified INFO.  Create a new
2267    architecture if needed.  Return that new architecture.  */
2268
2269 struct gdbarch *
2270 gdbarch_find_by_info (struct gdbarch_info info)
2271 {
2272   struct gdbarch *new_gdbarch;
2273   struct gdbarch_registration *rego;
2274
2275   /* Fill in missing parts of the INFO struct using a number of
2276      sources: "set ..."; INFOabfd supplied; and the global
2277      defaults.  */
2278   gdbarch_info_fill (&info);
2279
2280   /* Must have found some sort of architecture.  */
2281   gdb_assert (info.bfd_arch_info != NULL);
2282
2283   if (gdbarch_debug)
2284     {
2285       fprintf_unfiltered (gdb_stdlog,
2286                           "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2287                           (info.bfd_arch_info != NULL
2288                            ? info.bfd_arch_info->printable_name
2289                            : "(null)"));
2290       fprintf_unfiltered (gdb_stdlog,
2291                           "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2292                           info.byte_order,
2293                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
2294                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2295                            : "default"));
2296       fprintf_unfiltered (gdb_stdlog,
2297                           "gdbarch_find_by_info: info.osabi %d (%s)\n",
2298                           info.osabi, gdbarch_osabi_name (info.osabi));
2299       fprintf_unfiltered (gdb_stdlog,
2300                           "gdbarch_find_by_info: info.abfd %s\n",
2301                           host_address_to_string (info.abfd));
2302       fprintf_unfiltered (gdb_stdlog,
2303                           "gdbarch_find_by_info: info.tdep_info %s\n",
2304                           host_address_to_string (info.tdep_info));
2305     }
2306
2307   /* Find the tdep code that knows about this architecture.  */
2308   for (rego = gdbarch_registry;
2309        rego != NULL;
2310        rego = rego->next)
2311     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2312       break;
2313   if (rego == NULL)
2314     {
2315       if (gdbarch_debug)
2316         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2317                             "No matching architecture\n");
2318       return 0;
2319     }
2320
2321   /* Ask the tdep code for an architecture that matches "info".  */
2322   new_gdbarch = rego->init (info, rego->arches);
2323
2324   /* Did the tdep code like it?  No.  Reject the change and revert to
2325      the old architecture.  */
2326   if (new_gdbarch == NULL)
2327     {
2328       if (gdbarch_debug)
2329         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2330                             "Target rejected architecture\n");
2331       return NULL;
2332     }
2333
2334   /* Is this a pre-existing architecture (as determined by already
2335      being initialized)?  Move it to the front of the architecture
2336      list (keeping the list sorted Most Recently Used).  */
2337   if (new_gdbarch->initialized_p)
2338     {
2339       struct gdbarch_list **list;
2340       struct gdbarch_list *this;
2341       if (gdbarch_debug)
2342         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2343                             "Previous architecture %s (%s) selected\n",
2344                             host_address_to_string (new_gdbarch),
2345                             new_gdbarch->bfd_arch_info->printable_name);
2346       /* Find the existing arch in the list.  */
2347       for (list = &rego->arches;
2348            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2349            list = &(*list)->next);
2350       /* It had better be in the list of architectures.  */
2351       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2352       /* Unlink THIS.  */
2353       this = (*list);
2354       (*list) = this->next;
2355       /* Insert THIS at the front.  */
2356       this->next = rego->arches;
2357       rego->arches = this;
2358       /* Return it.  */
2359       return new_gdbarch;
2360     }
2361
2362   /* It's a new architecture.  */
2363   if (gdbarch_debug)
2364     fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2365                         "New architecture %s (%s) selected\n",
2366                         host_address_to_string (new_gdbarch),
2367                         new_gdbarch->bfd_arch_info->printable_name);
2368
2369   /* Insert the new architecture into the front of the architecture
2370      list (keep the list sorted Most Recently Used).  */
2371   {
2372     struct gdbarch_list *this = XNEW (struct gdbarch_list);
2373     this->next = rego->arches;
2374     this->gdbarch = new_gdbarch;
2375     rego->arches = this;
2376   }
2377
2378   /* Check that the newly installed architecture is valid.  Plug in
2379      any post init values.  */
2380   new_gdbarch->dump_tdep = rego->dump_tdep;
2381   verify_gdbarch (new_gdbarch);
2382   new_gdbarch->initialized_p = 1;
2383
2384   if (gdbarch_debug)
2385     gdbarch_dump (new_gdbarch, gdb_stdlog);
2386
2387   return new_gdbarch;
2388 }
2389
2390 /* Make the specified architecture current.  */
2391
2392 void
2393 set_target_gdbarch (struct gdbarch *new_gdbarch)
2394 {
2395   gdb_assert (new_gdbarch != NULL);
2396   gdb_assert (new_gdbarch->initialized_p);
2397   current_inferior ()->gdbarch = new_gdbarch;
2398   observer_notify_architecture_changed (new_gdbarch);
2399   registers_changed ();
2400 }
2401
2402 /* Return the current inferior's arch.  */
2403
2404 struct gdbarch *
2405 target_gdbarch (void)
2406 {
2407   return current_inferior ()->gdbarch;
2408 }
2409
2410 extern void _initialize_gdbarch (void);
2411
2412 void
2413 _initialize_gdbarch (void)
2414 {
2415   add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2416 Set architecture debugging."), _("\\
2417 Show architecture debugging."), _("\\
2418 When non-zero, architecture debugging is enabled."),
2419                             NULL,
2420                             show_gdbarch_debug,
2421                             &setdebuglist, &showdebuglist);
2422 }
2423 EOF
2424
2425 # close things off
2426 exec 1>&2
2427 #../move-if-change new-gdbarch.c gdbarch.c
2428 compare_new gdbarch.c