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::default_print_float_info::0
 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
1091 # Return a regular expression that matches names used by this
1092 # architecture in GNU configury triplets.  The result is statically
1093 # allocated and must not be freed.  The default implementation simply
1094 # returns the BFD architecture name, which is correct in nearly every
1095 # case.
1096 m:const char *:gnu_triplet_regexp:void:::default_gnu_triplet_regexp::0
1097 EOF
1098 }
1099
1100 #
1101 # The .log file
1102 #
1103 exec > new-gdbarch.log
1104 function_list | while do_read
1105 do
1106     cat <<EOF
1107 ${class} ${returntype} ${function} ($formal)
1108 EOF
1109     for r in ${read}
1110     do
1111         eval echo \"\ \ \ \ ${r}=\${${r}}\"
1112     done
1113     if class_is_predicate_p && fallback_default_p
1114     then
1115         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1116         kill $$
1117         exit 1
1118     fi
1119     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
1120     then
1121         echo "Error: postdefault is useless when invalid_p=0" 1>&2
1122         kill $$
1123         exit 1
1124     fi
1125     if class_is_multiarch_p
1126     then
1127         if class_is_predicate_p ; then :
1128         elif test "x${predefault}" = "x"
1129         then
1130             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1131             kill $$
1132             exit 1
1133         fi
1134     fi
1135     echo ""
1136 done
1137
1138 exec 1>&2
1139 compare_new gdbarch.log
1140
1141
1142 copyright ()
1143 {
1144 cat <<EOF
1145 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1146 /* vi:set ro: */
1147
1148 /* Dynamic architecture support for GDB, the GNU debugger.
1149
1150    Copyright (C) 1998-2014 Free Software Foundation, Inc.
1151
1152    This file is part of GDB.
1153
1154    This program is free software; you can redistribute it and/or modify
1155    it under the terms of the GNU General Public License as published by
1156    the Free Software Foundation; either version 3 of the License, or
1157    (at your option) any later version.
1158
1159    This program is distributed in the hope that it will be useful,
1160    but WITHOUT ANY WARRANTY; without even the implied warranty of
1161    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1162    GNU General Public License for more details.
1163
1164    You should have received a copy of the GNU General Public License
1165    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
1166
1167 /* This file was created with the aid of \`\`gdbarch.sh''.
1168
1169    The Bourne shell script \`\`gdbarch.sh'' creates the files
1170    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1171    against the existing \`\`gdbarch.[hc]''.  Any differences found
1172    being reported.
1173
1174    If editing this file, please also run gdbarch.sh and merge any
1175    changes into that script. Conversely, when making sweeping changes
1176    to this file, modifying gdbarch.sh and using its output may prove
1177    easier.  */
1178
1179 EOF
1180 }
1181
1182 #
1183 # The .h file
1184 #
1185
1186 exec > new-gdbarch.h
1187 copyright
1188 cat <<EOF
1189 #ifndef GDBARCH_H
1190 #define GDBARCH_H
1191
1192 #include "frame.h"
1193
1194 struct floatformat;
1195 struct ui_file;
1196 struct value;
1197 struct objfile;
1198 struct obj_section;
1199 struct minimal_symbol;
1200 struct regcache;
1201 struct reggroup;
1202 struct regset;
1203 struct disassemble_info;
1204 struct target_ops;
1205 struct obstack;
1206 struct bp_target_info;
1207 struct target_desc;
1208 struct objfile;
1209 struct symbol;
1210 struct displaced_step_closure;
1211 struct core_regset_section;
1212 struct syscall;
1213 struct agent_expr;
1214 struct axs_value;
1215 struct stap_parse_info;
1216 struct ravenscar_arch_ops;
1217 struct elf_internal_linux_prpsinfo;
1218 struct mem_range;
1219 struct syscalls_info;
1220
1221 /* The architecture associated with the inferior through the
1222    connection to the target.
1223
1224    The architecture vector provides some information that is really a
1225    property of the inferior, accessed through a particular target:
1226    ptrace operations; the layout of certain RSP packets; the solib_ops
1227    vector; etc.  To differentiate architecture accesses to
1228    per-inferior/target properties from
1229    per-thread/per-frame/per-objfile properties, accesses to
1230    per-inferior/target properties should be made through this
1231    gdbarch.  */
1232
1233 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'.  */
1234 extern struct gdbarch *target_gdbarch (void);
1235
1236 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1237    gdbarch  method.  */
1238
1239 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1240   (struct objfile *objfile, void *cb_data);
1241
1242 typedef void (iterate_over_regset_sections_cb)
1243   (const char *sect_name, int size, const struct regset *regset,
1244    const char *human_name, void *cb_data);
1245 EOF
1246
1247 # function typedef's
1248 printf "\n"
1249 printf "\n"
1250 printf "/* The following are pre-initialized by GDBARCH.  */\n"
1251 function_list | while do_read
1252 do
1253     if class_is_info_p
1254     then
1255         printf "\n"
1256         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1257         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized.  */\n"
1258     fi
1259 done
1260
1261 # function typedef's
1262 printf "\n"
1263 printf "\n"
1264 printf "/* The following are initialized by the target dependent code.  */\n"
1265 function_list | while do_read
1266 do
1267     if [ -n "${comment}" ]
1268     then
1269         echo "${comment}" | sed \
1270             -e '2 s,#,/*,' \
1271             -e '3,$ s,#,  ,' \
1272             -e '$ s,$, */,'
1273     fi
1274
1275     if class_is_predicate_p
1276     then
1277         printf "\n"
1278         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
1279     fi
1280     if class_is_variable_p
1281     then
1282         printf "\n"
1283         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1284         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
1285     fi
1286     if class_is_function_p
1287     then
1288         printf "\n"
1289         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1290         then
1291             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
1292         elif class_is_multiarch_p
1293         then
1294             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
1295         else
1296             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
1297         fi
1298         if [ "x${formal}" = "xvoid" ]
1299         then
1300           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1301         else
1302           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
1303         fi
1304         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
1305     fi
1306 done
1307
1308 # close it off
1309 cat <<EOF
1310
1311 /* Definition for an unknown syscall, used basically in error-cases.  */
1312 #define UNKNOWN_SYSCALL (-1)
1313
1314 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1315
1316
1317 /* Mechanism for co-ordinating the selection of a specific
1318    architecture.
1319
1320    GDB targets (*-tdep.c) can register an interest in a specific
1321    architecture.  Other GDB components can register a need to maintain
1322    per-architecture data.
1323
1324    The mechanisms below ensures that there is only a loose connection
1325    between the set-architecture command and the various GDB
1326    components.  Each component can independently register their need
1327    to maintain architecture specific data with gdbarch.
1328
1329    Pragmatics:
1330
1331    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
1332    didn't scale.
1333
1334    The more traditional mega-struct containing architecture specific
1335    data for all the various GDB components was also considered.  Since
1336    GDB is built from a variable number of (fairly independent)
1337    components it was determined that the global aproach was not
1338    applicable.  */
1339
1340
1341 /* Register a new architectural family with GDB.
1342
1343    Register support for the specified ARCHITECTURE with GDB.  When
1344    gdbarch determines that the specified architecture has been
1345    selected, the corresponding INIT function is called.
1346
1347    --
1348
1349    The INIT function takes two parameters: INFO which contains the
1350    information available to gdbarch about the (possibly new)
1351    architecture; ARCHES which is a list of the previously created
1352    \`\`struct gdbarch'' for this architecture.
1353
1354    The INFO parameter is, as far as possible, be pre-initialized with
1355    information obtained from INFO.ABFD or the global defaults.
1356
1357    The ARCHES parameter is a linked list (sorted most recently used)
1358    of all the previously created architures for this architecture
1359    family.  The (possibly NULL) ARCHES->gdbarch can used to access
1360    values from the previously selected architecture for this
1361    architecture family.
1362
1363    The INIT function shall return any of: NULL - indicating that it
1364    doesn't recognize the selected architecture; an existing \`\`struct
1365    gdbarch'' from the ARCHES list - indicating that the new
1366    architecture is just a synonym for an earlier architecture (see
1367    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1368    - that describes the selected architecture (see gdbarch_alloc()).
1369
1370    The DUMP_TDEP function shall print out all target specific values.
1371    Care should be taken to ensure that the function works in both the
1372    multi-arch and non- multi-arch cases.  */
1373
1374 struct gdbarch_list
1375 {
1376   struct gdbarch *gdbarch;
1377   struct gdbarch_list *next;
1378 };
1379
1380 struct gdbarch_info
1381 {
1382   /* Use default: NULL (ZERO).  */
1383   const struct bfd_arch_info *bfd_arch_info;
1384
1385   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
1386   enum bfd_endian byte_order;
1387
1388   enum bfd_endian byte_order_for_code;
1389
1390   /* Use default: NULL (ZERO).  */
1391   bfd *abfd;
1392
1393   /* Use default: NULL (ZERO).  */
1394   struct gdbarch_tdep_info *tdep_info;
1395
1396   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
1397   enum gdb_osabi osabi;
1398
1399   /* Use default: NULL (ZERO).  */
1400   const struct target_desc *target_desc;
1401 };
1402
1403 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1404 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1405
1406 /* DEPRECATED - use gdbarch_register() */
1407 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1408
1409 extern void gdbarch_register (enum bfd_architecture architecture,
1410                               gdbarch_init_ftype *,
1411                               gdbarch_dump_tdep_ftype *);
1412
1413
1414 /* Return a freshly allocated, NULL terminated, array of the valid
1415    architecture names.  Since architectures are registered during the
1416    _initialize phase this function only returns useful information
1417    once initialization has been completed.  */
1418
1419 extern const char **gdbarch_printable_names (void);
1420
1421
1422 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1423    matches the information provided by INFO.  */
1424
1425 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1426
1427
1428 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
1429    basic initialization using values obtained from the INFO and TDEP
1430    parameters.  set_gdbarch_*() functions are called to complete the
1431    initialization of the object.  */
1432
1433 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1434
1435
1436 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1437    It is assumed that the caller freeds the \`\`struct
1438    gdbarch_tdep''.  */
1439
1440 extern void gdbarch_free (struct gdbarch *);
1441
1442
1443 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1444    obstack.  The memory is freed when the corresponding architecture
1445    is also freed.  */
1446
1447 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1448 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1449 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1450
1451
1452 /* Helper function.  Force an update of the current architecture.
1453
1454    The actual architecture selected is determined by INFO, \`\`(gdb) set
1455    architecture'' et.al., the existing architecture and BFD's default
1456    architecture.  INFO should be initialized to zero and then selected
1457    fields should be updated.
1458
1459    Returns non-zero if the update succeeds.  */
1460
1461 extern int gdbarch_update_p (struct gdbarch_info info);
1462
1463
1464 /* Helper function.  Find an architecture matching info.
1465
1466    INFO should be initialized using gdbarch_info_init, relevant fields
1467    set, and then finished using gdbarch_info_fill.
1468
1469    Returns the corresponding architecture, or NULL if no matching
1470    architecture was found.  */
1471
1472 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1473
1474
1475 /* Helper function.  Set the target gdbarch to "gdbarch".  */
1476
1477 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1478
1479
1480 /* Register per-architecture data-pointer.
1481
1482    Reserve space for a per-architecture data-pointer.  An identifier
1483    for the reserved data-pointer is returned.  That identifer should
1484    be saved in a local static variable.
1485
1486    Memory for the per-architecture data shall be allocated using
1487    gdbarch_obstack_zalloc.  That memory will be deleted when the
1488    corresponding architecture object is deleted.
1489
1490    When a previously created architecture is re-selected, the
1491    per-architecture data-pointer for that previous architecture is
1492    restored.  INIT() is not re-called.
1493
1494    Multiple registrarants for any architecture are allowed (and
1495    strongly encouraged).  */
1496
1497 struct gdbarch_data;
1498
1499 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1500 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1501 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1502 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1503 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1504                                          struct gdbarch_data *data,
1505                                          void *pointer);
1506
1507 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1508
1509
1510 /* Set the dynamic target-system-dependent parameters (architecture,
1511    byte-order, ...) using information found in the BFD.  */
1512
1513 extern void set_gdbarch_from_file (bfd *);
1514
1515
1516 /* Initialize the current architecture to the "first" one we find on
1517    our list.  */
1518
1519 extern void initialize_current_architecture (void);
1520
1521 /* gdbarch trace variable */
1522 extern unsigned int gdbarch_debug;
1523
1524 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1525
1526 #endif
1527 EOF
1528 exec 1>&2
1529 #../move-if-change new-gdbarch.h gdbarch.h
1530 compare_new gdbarch.h
1531
1532
1533 #
1534 # C file
1535 #
1536
1537 exec > new-gdbarch.c
1538 copyright
1539 cat <<EOF
1540
1541 #include "defs.h"
1542 #include "arch-utils.h"
1543
1544 #include "gdbcmd.h"
1545 #include "inferior.h"
1546 #include "symcat.h"
1547
1548 #include "floatformat.h"
1549 #include "reggroups.h"
1550 #include "osabi.h"
1551 #include "gdb_obstack.h"
1552 #include "observer.h"
1553 #include "regcache.h"
1554 #include "objfiles.h"
1555
1556 /* Static function declarations */
1557
1558 static void alloc_gdbarch_data (struct gdbarch *);
1559
1560 /* Non-zero if we want to trace architecture code.  */
1561
1562 #ifndef GDBARCH_DEBUG
1563 #define GDBARCH_DEBUG 0
1564 #endif
1565 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1566 static void
1567 show_gdbarch_debug (struct ui_file *file, int from_tty,
1568                     struct cmd_list_element *c, const char *value)
1569 {
1570   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1571 }
1572
1573 static const char *
1574 pformat (const struct floatformat **format)
1575 {
1576   if (format == NULL)
1577     return "(null)";
1578   else
1579     /* Just print out one of them - this is only for diagnostics.  */
1580     return format[0]->name;
1581 }
1582
1583 static const char *
1584 pstring (const char *string)
1585 {
1586   if (string == NULL)
1587     return "(null)";
1588   return string;
1589 }
1590
1591 /* Helper function to print a list of strings, represented as "const
1592    char *const *".  The list is printed comma-separated.  */
1593
1594 static char *
1595 pstring_list (const char *const *list)
1596 {
1597   static char ret[100];
1598   const char *const *p;
1599   size_t offset = 0;
1600
1601   if (list == NULL)
1602     return "(null)";
1603
1604   ret[0] = '\0';
1605   for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1606     {
1607       size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1608       offset += 2 + s;
1609     }
1610
1611   if (offset > 0)
1612     {
1613       gdb_assert (offset - 2 < sizeof (ret));
1614       ret[offset - 2] = '\0';
1615     }
1616
1617   return ret;
1618 }
1619
1620 EOF
1621
1622 # gdbarch open the gdbarch object
1623 printf "\n"
1624 printf "/* Maintain the struct gdbarch object.  */\n"
1625 printf "\n"
1626 printf "struct gdbarch\n"
1627 printf "{\n"
1628 printf "  /* Has this architecture been fully initialized?  */\n"
1629 printf "  int initialized_p;\n"
1630 printf "\n"
1631 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1632 printf "  struct obstack *obstack;\n"
1633 printf "\n"
1634 printf "  /* basic architectural information.  */\n"
1635 function_list | while do_read
1636 do
1637     if class_is_info_p
1638     then
1639         printf "  ${returntype} ${function};\n"
1640     fi
1641 done
1642 printf "\n"
1643 printf "  /* target specific vector.  */\n"
1644 printf "  struct gdbarch_tdep *tdep;\n"
1645 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1646 printf "\n"
1647 printf "  /* per-architecture data-pointers.  */\n"
1648 printf "  unsigned nr_data;\n"
1649 printf "  void **data;\n"
1650 printf "\n"
1651 cat <<EOF
1652   /* Multi-arch values.
1653
1654      When extending this structure you must:
1655
1656      Add the field below.
1657
1658      Declare set/get functions and define the corresponding
1659      macro in gdbarch.h.
1660
1661      gdbarch_alloc(): If zero/NULL is not a suitable default,
1662      initialize the new field.
1663
1664      verify_gdbarch(): Confirm that the target updated the field
1665      correctly.
1666
1667      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1668      field is dumped out
1669
1670      get_gdbarch(): Implement the set/get functions (probably using
1671      the macro's as shortcuts).
1672
1673      */
1674
1675 EOF
1676 function_list | while do_read
1677 do
1678     if class_is_variable_p
1679     then
1680         printf "  ${returntype} ${function};\n"
1681     elif class_is_function_p
1682     then
1683         printf "  gdbarch_${function}_ftype *${function};\n"
1684     fi
1685 done
1686 printf "};\n"
1687
1688 # Create a new gdbarch struct
1689 cat <<EOF
1690
1691 /* Create a new \`\`struct gdbarch'' based on information provided by
1692    \`\`struct gdbarch_info''.  */
1693 EOF
1694 printf "\n"
1695 cat <<EOF
1696 struct gdbarch *
1697 gdbarch_alloc (const struct gdbarch_info *info,
1698                struct gdbarch_tdep *tdep)
1699 {
1700   struct gdbarch *gdbarch;
1701
1702   /* Create an obstack for allocating all the per-architecture memory,
1703      then use that to allocate the architecture vector.  */
1704   struct obstack *obstack = XNEW (struct obstack);
1705   obstack_init (obstack);
1706   gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1707   memset (gdbarch, 0, sizeof (*gdbarch));
1708   gdbarch->obstack = obstack;
1709
1710   alloc_gdbarch_data (gdbarch);
1711
1712   gdbarch->tdep = tdep;
1713 EOF
1714 printf "\n"
1715 function_list | while do_read
1716 do
1717     if class_is_info_p
1718     then
1719         printf "  gdbarch->${function} = info->${function};\n"
1720     fi
1721 done
1722 printf "\n"
1723 printf "  /* Force the explicit initialization of these.  */\n"
1724 function_list | while do_read
1725 do
1726     if class_is_function_p || class_is_variable_p
1727     then
1728         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1729         then
1730           printf "  gdbarch->${function} = ${predefault};\n"
1731         fi
1732     fi
1733 done
1734 cat <<EOF
1735   /* gdbarch_alloc() */
1736
1737   return gdbarch;
1738 }
1739 EOF
1740
1741 # Free a gdbarch struct.
1742 printf "\n"
1743 printf "\n"
1744 cat <<EOF
1745 /* Allocate extra space using the per-architecture obstack.  */
1746
1747 void *
1748 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1749 {
1750   void *data = obstack_alloc (arch->obstack, size);
1751
1752   memset (data, 0, size);
1753   return data;
1754 }
1755
1756
1757 /* Free a gdbarch struct.  This should never happen in normal
1758    operation --- once you've created a gdbarch, you keep it around.
1759    However, if an architecture's init function encounters an error
1760    building the structure, it may need to clean up a partially
1761    constructed gdbarch.  */
1762
1763 void
1764 gdbarch_free (struct gdbarch *arch)
1765 {
1766   struct obstack *obstack;
1767
1768   gdb_assert (arch != NULL);
1769   gdb_assert (!arch->initialized_p);
1770   obstack = arch->obstack;
1771   obstack_free (obstack, 0); /* Includes the ARCH.  */
1772   xfree (obstack);
1773 }
1774 EOF
1775
1776 # verify a new architecture
1777 cat <<EOF
1778
1779
1780 /* Ensure that all values in a GDBARCH are reasonable.  */
1781
1782 static void
1783 verify_gdbarch (struct gdbarch *gdbarch)
1784 {
1785   struct ui_file *log;
1786   struct cleanup *cleanups;
1787   long length;
1788   char *buf;
1789
1790   log = mem_fileopen ();
1791   cleanups = make_cleanup_ui_file_delete (log);
1792   /* fundamental */
1793   if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1794     fprintf_unfiltered (log, "\n\tbyte-order");
1795   if (gdbarch->bfd_arch_info == NULL)
1796     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1797   /* Check those that need to be defined for the given multi-arch level.  */
1798 EOF
1799 function_list | while do_read
1800 do
1801     if class_is_function_p || class_is_variable_p
1802     then
1803         if [ "x${invalid_p}" = "x0" ]
1804         then
1805             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1806         elif class_is_predicate_p
1807         then
1808             printf "  /* Skip verify of ${function}, has predicate.  */\n"
1809         # FIXME: See do_read for potential simplification
1810         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1811         then
1812             printf "  if (${invalid_p})\n"
1813             printf "    gdbarch->${function} = ${postdefault};\n"
1814         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1815         then
1816             printf "  if (gdbarch->${function} == ${predefault})\n"
1817             printf "    gdbarch->${function} = ${postdefault};\n"
1818         elif [ -n "${postdefault}" ]
1819         then
1820             printf "  if (gdbarch->${function} == 0)\n"
1821             printf "    gdbarch->${function} = ${postdefault};\n"
1822         elif [ -n "${invalid_p}" ]
1823         then
1824             printf "  if (${invalid_p})\n"
1825             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1826         elif [ -n "${predefault}" ]
1827         then
1828             printf "  if (gdbarch->${function} == ${predefault})\n"
1829             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1830         fi
1831     fi
1832 done
1833 cat <<EOF
1834   buf = ui_file_xstrdup (log, &length);
1835   make_cleanup (xfree, buf);
1836   if (length > 0)
1837     internal_error (__FILE__, __LINE__,
1838                     _("verify_gdbarch: the following are invalid ...%s"),
1839                     buf);
1840   do_cleanups (cleanups);
1841 }
1842 EOF
1843
1844 # dump the structure
1845 printf "\n"
1846 printf "\n"
1847 cat <<EOF
1848 /* Print out the details of the current architecture.  */
1849
1850 void
1851 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1852 {
1853   const char *gdb_nm_file = "<not-defined>";
1854
1855 #if defined (GDB_NM_FILE)
1856   gdb_nm_file = GDB_NM_FILE;
1857 #endif
1858   fprintf_unfiltered (file,
1859                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1860                       gdb_nm_file);
1861 EOF
1862 function_list | sort -t: -k 3 | while do_read
1863 do
1864     # First the predicate
1865     if class_is_predicate_p
1866     then
1867         printf "  fprintf_unfiltered (file,\n"
1868         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1869         printf "                      gdbarch_${function}_p (gdbarch));\n"
1870     fi
1871     # Print the corresponding value.
1872     if class_is_function_p
1873     then
1874         printf "  fprintf_unfiltered (file,\n"
1875         printf "                      \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1876         printf "                      host_address_to_string (gdbarch->${function}));\n"
1877     else
1878         # It is a variable
1879         case "${print}:${returntype}" in
1880             :CORE_ADDR )
1881                 fmt="%s"
1882                 print="core_addr_to_string_nz (gdbarch->${function})"
1883                 ;;
1884             :* )
1885                 fmt="%s"
1886                 print="plongest (gdbarch->${function})"
1887                 ;;
1888             * )
1889                 fmt="%s"
1890                 ;;
1891         esac
1892         printf "  fprintf_unfiltered (file,\n"
1893         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1894         printf "                      ${print});\n"
1895     fi
1896 done
1897 cat <<EOF
1898   if (gdbarch->dump_tdep != NULL)
1899     gdbarch->dump_tdep (gdbarch, file);
1900 }
1901 EOF
1902
1903
1904 # GET/SET
1905 printf "\n"
1906 cat <<EOF
1907 struct gdbarch_tdep *
1908 gdbarch_tdep (struct gdbarch *gdbarch)
1909 {
1910   if (gdbarch_debug >= 2)
1911     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1912   return gdbarch->tdep;
1913 }
1914 EOF
1915 printf "\n"
1916 function_list | while do_read
1917 do
1918     if class_is_predicate_p
1919     then
1920         printf "\n"
1921         printf "int\n"
1922         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1923         printf "{\n"
1924         printf "  gdb_assert (gdbarch != NULL);\n"
1925         printf "  return ${predicate};\n"
1926         printf "}\n"
1927     fi
1928     if class_is_function_p
1929     then
1930         printf "\n"
1931         printf "${returntype}\n"
1932         if [ "x${formal}" = "xvoid" ]
1933         then
1934           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1935         else
1936           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1937         fi
1938         printf "{\n"
1939         printf "  gdb_assert (gdbarch != NULL);\n"
1940         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1941         if class_is_predicate_p && test -n "${predefault}"
1942         then
1943             # Allow a call to a function with a predicate.
1944             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1945         fi
1946         printf "  if (gdbarch_debug >= 2)\n"
1947         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1948         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1949         then
1950             if class_is_multiarch_p
1951             then
1952                 params="gdbarch"
1953             else
1954                 params=""
1955             fi
1956         else
1957             if class_is_multiarch_p
1958             then
1959                 params="gdbarch, ${actual}"
1960             else
1961                 params="${actual}"
1962             fi
1963         fi
1964         if [ "x${returntype}" = "xvoid" ]
1965         then
1966           printf "  gdbarch->${function} (${params});\n"
1967         else
1968           printf "  return gdbarch->${function} (${params});\n"
1969         fi
1970         printf "}\n"
1971         printf "\n"
1972         printf "void\n"
1973         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1974         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1975         printf "{\n"
1976         printf "  gdbarch->${function} = ${function};\n"
1977         printf "}\n"
1978     elif class_is_variable_p
1979     then
1980         printf "\n"
1981         printf "${returntype}\n"
1982         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1983         printf "{\n"
1984         printf "  gdb_assert (gdbarch != NULL);\n"
1985         if [ "x${invalid_p}" = "x0" ]
1986         then
1987             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1988         elif [ -n "${invalid_p}" ]
1989         then
1990             printf "  /* Check variable is valid.  */\n"
1991             printf "  gdb_assert (!(${invalid_p}));\n"
1992         elif [ -n "${predefault}" ]
1993         then
1994             printf "  /* Check variable changed from pre-default.  */\n"
1995             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1996         fi
1997         printf "  if (gdbarch_debug >= 2)\n"
1998         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1999         printf "  return gdbarch->${function};\n"
2000         printf "}\n"
2001         printf "\n"
2002         printf "void\n"
2003         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
2004         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
2005         printf "{\n"
2006         printf "  gdbarch->${function} = ${function};\n"
2007         printf "}\n"
2008     elif class_is_info_p
2009     then
2010         printf "\n"
2011         printf "${returntype}\n"
2012         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
2013         printf "{\n"
2014         printf "  gdb_assert (gdbarch != NULL);\n"
2015         printf "  if (gdbarch_debug >= 2)\n"
2016         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
2017         printf "  return gdbarch->${function};\n"
2018         printf "}\n"
2019     fi
2020 done
2021
2022 # All the trailing guff
2023 cat <<EOF
2024
2025
2026 /* Keep a registry of per-architecture data-pointers required by GDB
2027    modules.  */
2028
2029 struct gdbarch_data
2030 {
2031   unsigned index;
2032   int init_p;
2033   gdbarch_data_pre_init_ftype *pre_init;
2034   gdbarch_data_post_init_ftype *post_init;
2035 };
2036
2037 struct gdbarch_data_registration
2038 {
2039   struct gdbarch_data *data;
2040   struct gdbarch_data_registration *next;
2041 };
2042
2043 struct gdbarch_data_registry
2044 {
2045   unsigned nr;
2046   struct gdbarch_data_registration *registrations;
2047 };
2048
2049 struct gdbarch_data_registry gdbarch_data_registry =
2050 {
2051   0, NULL,
2052 };
2053
2054 static struct gdbarch_data *
2055 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2056                        gdbarch_data_post_init_ftype *post_init)
2057 {
2058   struct gdbarch_data_registration **curr;
2059
2060   /* Append the new registration.  */
2061   for (curr = &gdbarch_data_registry.registrations;
2062        (*curr) != NULL;
2063        curr = &(*curr)->next);
2064   (*curr) = XNEW (struct gdbarch_data_registration);
2065   (*curr)->next = NULL;
2066   (*curr)->data = XNEW (struct gdbarch_data);
2067   (*curr)->data->index = gdbarch_data_registry.nr++;
2068   (*curr)->data->pre_init = pre_init;
2069   (*curr)->data->post_init = post_init;
2070   (*curr)->data->init_p = 1;
2071   return (*curr)->data;
2072 }
2073
2074 struct gdbarch_data *
2075 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2076 {
2077   return gdbarch_data_register (pre_init, NULL);
2078 }
2079
2080 struct gdbarch_data *
2081 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2082 {
2083   return gdbarch_data_register (NULL, post_init);
2084 }
2085
2086 /* Create/delete the gdbarch data vector.  */
2087
2088 static void
2089 alloc_gdbarch_data (struct gdbarch *gdbarch)
2090 {
2091   gdb_assert (gdbarch->data == NULL);
2092   gdbarch->nr_data = gdbarch_data_registry.nr;
2093   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2094 }
2095
2096 /* Initialize the current value of the specified per-architecture
2097    data-pointer.  */
2098
2099 void
2100 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2101                              struct gdbarch_data *data,
2102                              void *pointer)
2103 {
2104   gdb_assert (data->index < gdbarch->nr_data);
2105   gdb_assert (gdbarch->data[data->index] == NULL);
2106   gdb_assert (data->pre_init == NULL);
2107   gdbarch->data[data->index] = pointer;
2108 }
2109
2110 /* Return the current value of the specified per-architecture
2111    data-pointer.  */
2112
2113 void *
2114 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2115 {
2116   gdb_assert (data->index < gdbarch->nr_data);
2117   if (gdbarch->data[data->index] == NULL)
2118     {
2119       /* The data-pointer isn't initialized, call init() to get a
2120          value.  */
2121       if (data->pre_init != NULL)
2122         /* Mid architecture creation: pass just the obstack, and not
2123            the entire architecture, as that way it isn't possible for
2124            pre-init code to refer to undefined architecture
2125            fields.  */
2126         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2127       else if (gdbarch->initialized_p
2128                && data->post_init != NULL)
2129         /* Post architecture creation: pass the entire architecture
2130            (as all fields are valid), but be careful to also detect
2131            recursive references.  */
2132         {
2133           gdb_assert (data->init_p);
2134           data->init_p = 0;
2135           gdbarch->data[data->index] = data->post_init (gdbarch);
2136           data->init_p = 1;
2137         }
2138       else
2139         /* The architecture initialization hasn't completed - punt -
2140          hope that the caller knows what they are doing.  Once
2141          deprecated_set_gdbarch_data has been initialized, this can be
2142          changed to an internal error.  */
2143         return NULL;
2144       gdb_assert (gdbarch->data[data->index] != NULL);
2145     }
2146   return gdbarch->data[data->index];
2147 }
2148
2149
2150 /* Keep a registry of the architectures known by GDB.  */
2151
2152 struct gdbarch_registration
2153 {
2154   enum bfd_architecture bfd_architecture;
2155   gdbarch_init_ftype *init;
2156   gdbarch_dump_tdep_ftype *dump_tdep;
2157   struct gdbarch_list *arches;
2158   struct gdbarch_registration *next;
2159 };
2160
2161 static struct gdbarch_registration *gdbarch_registry = NULL;
2162
2163 static void
2164 append_name (const char ***buf, int *nr, const char *name)
2165 {
2166   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
2167   (*buf)[*nr] = name;
2168   *nr += 1;
2169 }
2170
2171 const char **
2172 gdbarch_printable_names (void)
2173 {
2174   /* Accumulate a list of names based on the registed list of
2175      architectures.  */
2176   int nr_arches = 0;
2177   const char **arches = NULL;
2178   struct gdbarch_registration *rego;
2179
2180   for (rego = gdbarch_registry;
2181        rego != NULL;
2182        rego = rego->next)
2183     {
2184       const struct bfd_arch_info *ap;
2185       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2186       if (ap == NULL)
2187         internal_error (__FILE__, __LINE__,
2188                         _("gdbarch_architecture_names: multi-arch unknown"));
2189       do
2190         {
2191           append_name (&arches, &nr_arches, ap->printable_name);
2192           ap = ap->next;
2193         }
2194       while (ap != NULL);
2195     }
2196   append_name (&arches, &nr_arches, NULL);
2197   return arches;
2198 }
2199
2200
2201 void
2202 gdbarch_register (enum bfd_architecture bfd_architecture,
2203                   gdbarch_init_ftype *init,
2204                   gdbarch_dump_tdep_ftype *dump_tdep)
2205 {
2206   struct gdbarch_registration **curr;
2207   const struct bfd_arch_info *bfd_arch_info;
2208
2209   /* Check that BFD recognizes this architecture */
2210   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2211   if (bfd_arch_info == NULL)
2212     {
2213       internal_error (__FILE__, __LINE__,
2214                       _("gdbarch: Attempt to register "
2215                         "unknown architecture (%d)"),
2216                       bfd_architecture);
2217     }
2218   /* Check that we haven't seen this architecture before.  */
2219   for (curr = &gdbarch_registry;
2220        (*curr) != NULL;
2221        curr = &(*curr)->next)
2222     {
2223       if (bfd_architecture == (*curr)->bfd_architecture)
2224         internal_error (__FILE__, __LINE__,
2225                         _("gdbarch: Duplicate registration "
2226                           "of architecture (%s)"),
2227                         bfd_arch_info->printable_name);
2228     }
2229   /* log it */
2230   if (gdbarch_debug)
2231     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2232                         bfd_arch_info->printable_name,
2233                         host_address_to_string (init));
2234   /* Append it */
2235   (*curr) = XNEW (struct gdbarch_registration);
2236   (*curr)->bfd_architecture = bfd_architecture;
2237   (*curr)->init = init;
2238   (*curr)->dump_tdep = dump_tdep;
2239   (*curr)->arches = NULL;
2240   (*curr)->next = NULL;
2241 }
2242
2243 void
2244 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2245                        gdbarch_init_ftype *init)
2246 {
2247   gdbarch_register (bfd_architecture, init, NULL);
2248 }
2249
2250
2251 /* Look for an architecture using gdbarch_info.  */
2252
2253 struct gdbarch_list *
2254 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2255                              const struct gdbarch_info *info)
2256 {
2257   for (; arches != NULL; arches = arches->next)
2258     {
2259       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2260         continue;
2261       if (info->byte_order != arches->gdbarch->byte_order)
2262         continue;
2263       if (info->osabi != arches->gdbarch->osabi)
2264         continue;
2265       if (info->target_desc != arches->gdbarch->target_desc)
2266         continue;
2267       return arches;
2268     }
2269   return NULL;
2270 }
2271
2272
2273 /* Find an architecture that matches the specified INFO.  Create a new
2274    architecture if needed.  Return that new architecture.  */
2275
2276 struct gdbarch *
2277 gdbarch_find_by_info (struct gdbarch_info info)
2278 {
2279   struct gdbarch *new_gdbarch;
2280   struct gdbarch_registration *rego;
2281
2282   /* Fill in missing parts of the INFO struct using a number of
2283      sources: "set ..."; INFOabfd supplied; and the global
2284      defaults.  */
2285   gdbarch_info_fill (&info);
2286
2287   /* Must have found some sort of architecture.  */
2288   gdb_assert (info.bfd_arch_info != NULL);
2289
2290   if (gdbarch_debug)
2291     {
2292       fprintf_unfiltered (gdb_stdlog,
2293                           "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2294                           (info.bfd_arch_info != NULL
2295                            ? info.bfd_arch_info->printable_name
2296                            : "(null)"));
2297       fprintf_unfiltered (gdb_stdlog,
2298                           "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2299                           info.byte_order,
2300                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
2301                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2302                            : "default"));
2303       fprintf_unfiltered (gdb_stdlog,
2304                           "gdbarch_find_by_info: info.osabi %d (%s)\n",
2305                           info.osabi, gdbarch_osabi_name (info.osabi));
2306       fprintf_unfiltered (gdb_stdlog,
2307                           "gdbarch_find_by_info: info.abfd %s\n",
2308                           host_address_to_string (info.abfd));
2309       fprintf_unfiltered (gdb_stdlog,
2310                           "gdbarch_find_by_info: info.tdep_info %s\n",
2311                           host_address_to_string (info.tdep_info));
2312     }
2313
2314   /* Find the tdep code that knows about this architecture.  */
2315   for (rego = gdbarch_registry;
2316        rego != NULL;
2317        rego = rego->next)
2318     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2319       break;
2320   if (rego == NULL)
2321     {
2322       if (gdbarch_debug)
2323         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2324                             "No matching architecture\n");
2325       return 0;
2326     }
2327
2328   /* Ask the tdep code for an architecture that matches "info".  */
2329   new_gdbarch = rego->init (info, rego->arches);
2330
2331   /* Did the tdep code like it?  No.  Reject the change and revert to
2332      the old architecture.  */
2333   if (new_gdbarch == NULL)
2334     {
2335       if (gdbarch_debug)
2336         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2337                             "Target rejected architecture\n");
2338       return NULL;
2339     }
2340
2341   /* Is this a pre-existing architecture (as determined by already
2342      being initialized)?  Move it to the front of the architecture
2343      list (keeping the list sorted Most Recently Used).  */
2344   if (new_gdbarch->initialized_p)
2345     {
2346       struct gdbarch_list **list;
2347       struct gdbarch_list *this;
2348       if (gdbarch_debug)
2349         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2350                             "Previous architecture %s (%s) selected\n",
2351                             host_address_to_string (new_gdbarch),
2352                             new_gdbarch->bfd_arch_info->printable_name);
2353       /* Find the existing arch in the list.  */
2354       for (list = &rego->arches;
2355            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2356            list = &(*list)->next);
2357       /* It had better be in the list of architectures.  */
2358       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2359       /* Unlink THIS.  */
2360       this = (*list);
2361       (*list) = this->next;
2362       /* Insert THIS at the front.  */
2363       this->next = rego->arches;
2364       rego->arches = this;
2365       /* Return it.  */
2366       return new_gdbarch;
2367     }
2368
2369   /* It's a new architecture.  */
2370   if (gdbarch_debug)
2371     fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2372                         "New architecture %s (%s) selected\n",
2373                         host_address_to_string (new_gdbarch),
2374                         new_gdbarch->bfd_arch_info->printable_name);
2375
2376   /* Insert the new architecture into the front of the architecture
2377      list (keep the list sorted Most Recently Used).  */
2378   {
2379     struct gdbarch_list *this = XNEW (struct gdbarch_list);
2380     this->next = rego->arches;
2381     this->gdbarch = new_gdbarch;
2382     rego->arches = this;
2383   }
2384
2385   /* Check that the newly installed architecture is valid.  Plug in
2386      any post init values.  */
2387   new_gdbarch->dump_tdep = rego->dump_tdep;
2388   verify_gdbarch (new_gdbarch);
2389   new_gdbarch->initialized_p = 1;
2390
2391   if (gdbarch_debug)
2392     gdbarch_dump (new_gdbarch, gdb_stdlog);
2393
2394   return new_gdbarch;
2395 }
2396
2397 /* Make the specified architecture current.  */
2398
2399 void
2400 set_target_gdbarch (struct gdbarch *new_gdbarch)
2401 {
2402   gdb_assert (new_gdbarch != NULL);
2403   gdb_assert (new_gdbarch->initialized_p);
2404   current_inferior ()->gdbarch = new_gdbarch;
2405   observer_notify_architecture_changed (new_gdbarch);
2406   registers_changed ();
2407 }
2408
2409 /* Return the current inferior's arch.  */
2410
2411 struct gdbarch *
2412 target_gdbarch (void)
2413 {
2414   return current_inferior ()->gdbarch;
2415 }
2416
2417 extern void _initialize_gdbarch (void);
2418
2419 void
2420 _initialize_gdbarch (void)
2421 {
2422   add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2423 Set architecture debugging."), _("\\
2424 Show architecture debugging."), _("\\
2425 When non-zero, architecture debugging is enabled."),
2426                             NULL,
2427                             show_gdbarch_debug,
2428                             &setdebuglist, &showdebuglist);
2429 }
2430 EOF
2431
2432 # close things off
2433 exec 1>&2
2434 #../move-if-change new-gdbarch.c gdbarch.c
2435 compare_new gdbarch.c