gdb/gdbarch.sh

   1 #!/bin/sh -u
   2
   3 # Architecture commands for GDB, the GNU debugger.
   4 #
   5 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   6 # Free Software Foundation, Inc.
   7 #
   8 # This file is part of GDB.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 # Make certain that the script is not running in an internationalized
  24 # environment.
  25 LANG=c ; export LANG
  26 LC_ALL=c ; export LC_ALL
  27
  28
  29 compare_new ()
  30 {
  31     file=$1
  32     if test ! -r ${file}
  33     then
  34         echo "${file} missing? cp new-${file} ${file}" 1>&2
  35     elif diff -u ${file} new-${file}
  36     then
  37         echo "${file} unchanged" 1>&2
  38     else
  39         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  40     fi
  41 }
  42
  43
  44 # Format of the input table
  45 read="class macro returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
  46
  47 do_read ()
  48 {
  49     comment=""
  50     class=""
  51     while read line
  52     do
  53         if test "${line}" = ""
  54         then
  55             continue
  56         elif test "${line}" = "#" -a "${comment}" = ""
  57         then
  58             continue
  59         elif expr "${line}" : "#" > /dev/null
  60         then
  61             comment="${comment}
  62 ${line}"
  63         else
  64
  65             # The semantics of IFS varies between different SH's.  Some
  66             # treat ``::' as three fields while some treat it as just too.
  67             # Work around this by eliminating ``::'' ....
  68             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  69
  70             OFS="${IFS}" ; IFS="[:]"
  71             eval read ${read} <<EOF
  72 ${line}
  73 EOF
  74             IFS="${OFS}"
  75
  76             if test -n "${garbage_at_eol}"
  77             then
  78                 echo "Garbage at end-of-line in ${line}" 1>&2
  79                 kill $$
  80                 exit 1
  81             fi
  82
  83             # .... and then going back through each field and strip out those
  84             # that ended up with just that space character.
  85             for r in ${read}
  86             do
  87                 if eval test \"\${${r}}\" = \"\ \"
  88                 then
  89                     eval ${r}=""
  90                 fi
  91             done
  92
  93             FUNCTION=`echo ${function} | tr '[a-z]' '[A-Z]'`
  94             if test "x${macro}" = "x="
  95             then
  96                 # Provide a UCASE version of function (for when there isn't MACRO)
  97                 macro="${FUNCTION}"
  98             elif test "${macro}" = "${FUNCTION}"
  99             then
 100                 echo "${function}: Specify = for macro field" 1>&2
 101                 kill $$
 102                 exit 1
 103             fi
 104
 105             # Check that macro definition wasn't supplied for multi-arch
 106             case "${class}" in
 107                 [mM] )
 108                     if test "${macro}" != ""
 109                     then
 110                         echo "Error: Function ${function} multi-arch yet macro ${macro} supplied" 1>&2
 111                         kill $$
 112                         exit 1
 113                     fi
 114             esac
 115
 116             case "${class}" in
 117                 m ) staticdefault="${predefault}" ;;
 118                 M ) staticdefault="0" ;;
 119                 * ) test "${staticdefault}" || staticdefault=0 ;;
 120             esac
 121
 122             case "${class}" in
 123             F | V | M )
 124                 case "${invalid_p}" in
 125                 "" )
 126                     if test -n "${predefault}"
 127                     then
 128                         #invalid_p="gdbarch->${function} == ${predefault}"
 129                         predicate="gdbarch->${function} != ${predefault}"
 130                     elif class_is_variable_p
 131                     then
 132                         predicate="gdbarch->${function} != 0"
 133                     elif class_is_function_p
 134                     then
 135                         predicate="gdbarch->${function} != NULL"
 136                     fi
 137                     ;;
 138                 * )
 139                     echo "Predicate function ${function} with invalid_p." 1>&2
 140                     kill $$
 141                     exit 1
 142                     ;;
 143                 esac
 144             esac
 145
 146             # PREDEFAULT is a valid fallback definition of MEMBER when
 147             # multi-arch is not enabled.  This ensures that the
 148             # default value, when multi-arch is the same as the
 149             # default value when not multi-arch.  POSTDEFAULT is
 150             # always a valid definition of MEMBER as this again
 151             # ensures consistency.
 152
 153             if [ -n "${postdefault}" ]
 154             then
 155                 fallbackdefault="${postdefault}"
 156             elif [ -n "${predefault}" ]
 157             then
 158                 fallbackdefault="${predefault}"
 159             else
 160                 fallbackdefault="0"
 161             fi
 162
 163             #NOT YET: See gdbarch.log for basic verification of
 164             # database
 165
 166             break
 167         fi
 168     done
 169     if [ -n "${class}" ]
 170     then
 171         true
 172     else
 173         false
 174     fi
 175 }
 176
 177
 178 fallback_default_p ()
 179 {
 180     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 181         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 182 }
 183
 184 class_is_variable_p ()
 185 {
 186     case "${class}" in
 187         *v* | *V* ) true ;;
 188         * ) false ;;
 189     esac
 190 }
 191
 192 class_is_function_p ()
 193 {
 194     case "${class}" in
 195         *f* | *F* | *m* | *M* ) true ;;
 196         * ) false ;;
 197     esac
 198 }
 199
 200 class_is_multiarch_p ()
 201 {
 202     case "${class}" in
 203         *m* | *M* ) true ;;
 204         * ) false ;;
 205     esac
 206 }
 207
 208 class_is_predicate_p ()
 209 {
 210     case "${class}" in
 211         *F* | *V* | *M* ) true ;;
 212         * ) false ;;
 213     esac
 214 }
 215
 216 class_is_info_p ()
 217 {
 218     case "${class}" in
 219         *i* ) true ;;
 220         * ) false ;;
 221     esac
 222 }
 223
 224
 225 # dump out/verify the doco
 226 for field in ${read}
 227 do
 228   case ${field} in
 229
 230     class ) : ;;
 231
 232         # # -> line disable
 233         # f -> function
 234         #   hiding a function
 235         # F -> function + predicate
 236         #   hiding a function + predicate to test function validity
 237         # v -> variable
 238         #   hiding a variable
 239         # V -> variable + predicate
 240         #   hiding a variable + predicate to test variables validity
 241         # i -> set from info
 242         #   hiding something from the ``struct info'' object
 243         # m -> multi-arch function
 244         #   hiding a multi-arch function (parameterised with the architecture)
 245         # M -> multi-arch function + predicate
 246         #   hiding a multi-arch function + predicate to test function validity
 247
 248     macro ) : ;;
 249
 250         # The name of the legacy C macro by which this method can be
 251         # accessed.  If empty, no macro is defined.  If "=", a macro
 252         # formed from the upper-case function name is used.
 253
 254     returntype ) : ;;
 255
 256         # For functions, the return type; for variables, the data type
 257
 258     function ) : ;;
 259
 260         # For functions, the member function name; for variables, the
 261         # variable name.  Member function names are always prefixed with
 262         # ``gdbarch_'' for name-space purity.
 263
 264     formal ) : ;;
 265
 266         # The formal argument list.  It is assumed that the formal
 267         # argument list includes the actual name of each list element.
 268         # A function with no arguments shall have ``void'' as the
 269         # formal argument list.
 270
 271     actual ) : ;;
 272
 273         # The list of actual arguments.  The arguments specified shall
 274         # match the FORMAL list given above.  Functions with out
 275         # arguments leave this blank.
 276
 277     staticdefault ) : ;;
 278
 279         # To help with the GDB startup a static gdbarch object is
 280         # created.  STATICDEFAULT is the value to insert into that
 281         # static gdbarch object.  Since this a static object only
 282         # simple expressions can be used.
 283
 284         # If STATICDEFAULT is empty, zero is used.
 285
 286     predefault ) : ;;
 287
 288         # An initial value to assign to MEMBER of the freshly
 289         # malloc()ed gdbarch object.  After initialization, the
 290         # freshly malloc()ed object is passed to the target
 291         # architecture code for further updates.
 292
 293         # If PREDEFAULT is empty, zero is used.
 294
 295         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 296         # INVALID_P are specified, PREDEFAULT will be used as the
 297         # default for the non- multi-arch target.
 298
 299         # A zero PREDEFAULT function will force the fallback to call
 300         # internal_error().
 301
 302         # Variable declarations can refer to ``gdbarch'' which will
 303         # contain the current architecture.  Care should be taken.
 304
 305     postdefault ) : ;;
 306
 307         # A value to assign to MEMBER of the new gdbarch object should
 308         # the target architecture code fail to change the PREDEFAULT
 309         # value.
 310
 311         # If POSTDEFAULT is empty, no post update is performed.
 312
 313         # If both INVALID_P and POSTDEFAULT are non-empty then
 314         # INVALID_P will be used to determine if MEMBER should be
 315         # changed to POSTDEFAULT.
 316
 317         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 318         # specified, POSTDEFAULT will be used as the default for the
 319         # non- multi-arch target (regardless of the value of
 320         # PREDEFAULT).
 321
 322         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 323
 324         # Variable declarations can refer to ``current_gdbarch'' which
 325         # will contain the current architecture.  Care should be
 326         # taken.
 327
 328     invalid_p ) : ;;
 329
 330         # A predicate equation that validates MEMBER.  Non-zero is
 331         # returned if the code creating the new architecture failed to
 332         # initialize MEMBER or the initialized the member is invalid.
 333         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 334         # that value.  If POSTDEFAULT is empty then internal_error()
 335         # is called.
 336
 337         # If INVALID_P is empty, a check that MEMBER is no longer
 338         # equal to PREDEFAULT is used.
 339
 340         # The expression ``0'' disables the INVALID_P check making
 341         # PREDEFAULT a legitimate value.
 342
 343         # See also PREDEFAULT and POSTDEFAULT.
 344
 345     print ) : ;;
 346
 347         # An optional expression that convers MEMBER to a value
 348         # suitable for formatting using %s.
 349
 350         # If PRINT is empty, paddr_nz (for CORE_ADDR) or paddr_d
 351         # (anything else) is used.
 352
 353     garbage_at_eol ) : ;;
 354
 355         # Catches stray fields.
 356
 357     *)
 358         echo "Bad field ${field}"
 359         exit 1;;
 360   esac
 361 done
 362
 363
 364 function_list ()
 365 {
 366   # See below (DOCO) for description of each field
 367   cat <<EOF
 368 i::const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (current_gdbarch)->printable_name
 369 #
 370 i::int:byte_order:::BFD_ENDIAN_BIG
 371 #
 372 i::enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
 373 #
 374 i::const struct target_desc *:target_desc:::::::paddr_d ((long) current_gdbarch->target_desc)
 375 # Number of bits in a char or unsigned char for the target machine.
 376 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 377 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 378 #
 379 # Number of bits in a short or unsigned short for the target machine.
 380 v::int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 381 # Number of bits in an int or unsigned int for the target machine.
 382 v::int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 383 # Number of bits in a long or unsigned long for the target machine.
 384 v::int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 385 # Number of bits in a long long or unsigned long long for the target
 386 # machine.
 387 v::int:long_long_bit:::8 * sizeof (LONGEST):2*current_gdbarch->long_bit::0
 388
 389 # The ABI default bit-size and format for "float", "double", and "long
 390 # double".  These bit/format pairs should eventually be combined into
 391 # a single object.  For the moment, just initialize them as a pair.
 392 # Each format describes both the big and little endian layouts (if
 393 # useful).
 394
 395 v::int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 396 v::const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (current_gdbarch->float_format)
 397 v::int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 398 v::const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (current_gdbarch->double_format)
 399 v::int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
 400 v::const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (current_gdbarch->long_double_format)
 401
 402 # For most targets, a pointer on the target and its representation as an
 403 # address in GDB have the same size and "look the same".  For such a
 404 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 405 # / addr_bit will be set from it.
 406 #
 407 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 408 # also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 409 # as well.
 410 #
 411 # ptr_bit is the size of a pointer on the target
 412 v::int:ptr_bit:::8 * sizeof (void*):current_gdbarch->int_bit::0
 413 # addr_bit is the size of a target address as represented in gdb
 414 v::int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (current_gdbarch):
 415 #
 416 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 417 v::int:char_signed:::1:-1:1
 418 #
 419 F::CORE_ADDR:read_pc:struct regcache *regcache:regcache
 420 F::void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
 421 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 422 # whole scheme for dealing with "frames" and "frame pointers" needs a
 423 # serious shakedown.
 424 f::void:virtual_frame_pointer:CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset:pc, frame_regnum, frame_offset:0:legacy_virtual_frame_pointer::0
 425 #
 426 M::void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
 427 M::void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
 428 #
 429 v::int:num_regs:::0:-1
 430 # This macro gives the number of pseudo-registers that live in the
 431 # register namespace but do not get fetched or stored on the target.
 432 # These pseudo-registers may be aliases for other registers,
 433 # combinations of other registers, or they may be computed by GDB.
 434 v::int:num_pseudo_regs:::0:0::0
 435
 436 # GDB's standard (or well known) register numbers.  These can map onto
 437 # a real register or a pseudo (computed) register or not be defined at
 438 # all (-1).
 439 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
 440 v::int:sp_regnum:::-1:-1::0
 441 v::int:pc_regnum:::-1:-1::0
 442 v::int:ps_regnum:::-1:-1::0
 443 v::int:fp0_regnum:::0:-1::0
 444 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
 445 f::int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
 446 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
 447 f::int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
 448 # Provide a default mapping from a DWARF register number to a gdb REGNUM.
 449 f::int:dwarf_reg_to_regnum:int dwarf_regnr:dwarf_regnr::no_op_reg_to_regnum::0
 450 # Convert from an sdb register number to an internal gdb register number.
 451 f::int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
 452 f::int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
 453 f::const char *:register_name:int regnr:regnr
 454
 455 # Return the type of a register specified by the architecture.  Only
 456 # the register cache should call this function directly; others should
 457 # use "register_type".
 458 M::struct type *:register_type:int reg_nr:reg_nr
 459
 460 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
 461 M::struct frame_id:unwind_dummy_id:struct frame_info *info:info
 462 # Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
 463 # deprecated_fp_regnum.
 464 v::int:deprecated_fp_regnum:::-1:-1::0
 465
 466 # See gdbint.texinfo.  See infcall.c.
 467 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
 468 v::int:call_dummy_location::::AT_ENTRY_POINT::0
 469 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
 470
 471 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
 472 M::void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 473 M::void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 474 # MAP a GDB RAW register number onto a simulator register number.  See
 475 # also include/...-sim.h.
 476 f::int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
 477 f::int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
 478 f::int:cannot_store_register:int regnum:regnum::cannot_register_not::0
 479 # setjmp/longjmp support.
 480 F::int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
 481 #
 482 v::int:believe_pcc_promotion:::::::
 483 #
 484 f::int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
 485 f::void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
 486 f::void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
 487 # Construct a value representing the contents of register REGNUM in
 488 # frame FRAME, interpreted as type TYPE.  The routine needs to
 489 # allocate and return a struct value with all value attributes
 490 # (but not the value contents) filled in.
 491 f::struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
 492 #
 493 f::CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
 494 f::void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
 495 M::CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
 496
 497 # It has been suggested that this, well actually its predecessor,
 498 # should take the type/value of the function to be called and not the
 499 # return type.  This is left as an exercise for the reader.
 500
 501 M::enum return_value_convention:return_value:struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:valtype, regcache, readbuf, writebuf
 502
 503 f::CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
 504 f::int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
 505 f::const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
 506 M::CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
 507 f::int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
 508 f::int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
 509 v::CORE_ADDR:decr_pc_after_break:::0:::0
 510
 511 # A function can be addressed by either it's "pointer" (possibly a
 512 # descriptor address) or "entry point" (first executable instruction).
 513 # The method "convert_from_func_ptr_addr" converting the former to the
 514 # latter.  gdbarch_deprecated_function_start_offset is being used to implement
 515 # a simplified subset of that functionality - the function's address
 516 # corresponds to the "function pointer" and the function's start
 517 # corresponds to the "function entry point" - and hence is redundant.
 518
 519 v::CORE_ADDR:deprecated_function_start_offset:::0:::0
 520
 521 # Return the remote protocol register number associated with this
 522 # register.  Normally the identity mapping.
 523 m::int:remote_register_number:int regno:regno::default_remote_register_number::0
 524
 525 # Fetch the target specific address used to represent a load module.
 526 F::CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
 527 #
 528 v::CORE_ADDR:frame_args_skip:::0:::0
 529 M::CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
 530 M::CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
 531 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 532 # frame-base.  Enable frame-base before frame-unwind.
 533 F::int:frame_num_args:struct frame_info *frame:frame
 534 #
 535 M::CORE_ADDR:frame_align:CORE_ADDR address:address
 536 m::int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
 537 v::int:frame_red_zone_size
 538 #
 539 m::CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
 540 # On some machines there are bits in addresses which are not really
 541 # part of the address, but are used by the kernel, the hardware, etc.
 542 # for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 543 # we get a "real" address such as one would find in a symbol table.
 544 # This is used only for addresses of instructions, and even then I'm
 545 # not sure it's used in all contexts.  It exists to deal with there
 546 # being a few stray bits in the PC which would mislead us, not as some
 547 # sort of generic thing to handle alignment or segmentation (it's
 548 # possible it should be in TARGET_READ_PC instead).
 549 f::CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
 550 # It is not at all clear why gdbarch_smash_text_address is not folded into
 551 # gdbarch_addr_bits_remove.
 552 f::CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
 553
 554 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 555 # indicates if the target needs software single step.  An ISA method to
 556 # implement it.
 557 #
 558 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 559 # breakpoints using the breakpoint system instead of blatting memory directly
 560 # (as with rs6000).
 561 #
 562 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 563 # target can single step.  If not, then implement single step using breakpoints.
 564 #
 565 # A return value of 1 means that the software_single_step breakpoints
 566 # were inserted; 0 means they were not.
 567 F::int:software_single_step:struct frame_info *frame:frame
 568
 569 # Return non-zero if the processor is executing a delay slot and a
 570 # further single-step is needed before the instruction finishes.
 571 M::int:single_step_through_delay:struct frame_info *frame:frame
 572 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 573 # disassembler.  Perhaps objdump can handle it?
 574 f::int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
 575 f::CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
 576
 577
 578 # If IN_SOLIB_DYNSYM_RESOLVE_CODE returns true, and SKIP_SOLIB_RESOLVER
 579 # evaluates non-zero, this is the address where the debugger will place
 580 # a step-resume breakpoint to get us past the dynamic linker.
 581 m::CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
 582 # Some systems also have trampoline code for returning from shared libs.
 583 f::int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
 584
 585 # A target might have problems with watchpoints as soon as the stack
 586 # frame of the current function has been destroyed.  This mostly happens
 587 # as the first action in a funtion's epilogue.  in_function_epilogue_p()
 588 # is defined to return a non-zero value if either the given addr is one
 589 # instruction after the stack destroying instruction up to the trailing
 590 # return instruction or if we can figure out that the stack frame has
 591 # already been invalidated regardless of the value of addr.  Targets
 592 # which don't suffer from that problem could just let this functionality
 593 # untouched.
 594 m::int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
 595 # Given a vector of command-line arguments, return a newly allocated
 596 # string which, when passed to the create_inferior function, will be
 597 # parsed (on Unix systems, by the shell) to yield the same vector.
 598 # This function should call error() if the argument vector is not
 599 # representable for this target or if this target does not support
 600 # command-line arguments.
 601 # ARGC is the number of elements in the vector.
 602 # ARGV is an array of strings, one per argument.
 603 m::char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
 604 f::void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
 605 f::void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
 606 v::const char *:name_of_malloc:::"malloc":"malloc"::0:current_gdbarch->name_of_malloc
 607 v::int:cannot_step_breakpoint:::0:0::0
 608 v::int:have_nonsteppable_watchpoint:::0:0::0
 609 F::int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
 610 M::const char *:address_class_type_flags_to_name:int type_flags:type_flags
 611 M::int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
 612 # Is a register in a group
 613 m::int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
 614 # Fetch the pointer to the ith function argument.
 615 F::CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
 616
 617 # Return the appropriate register set for a core file section with
 618 # name SECT_NAME and size SECT_SIZE.
 619 M::const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
 620
 621 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 622 # core file into buffer READBUF with length LEN.
 623 M::LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
 624
 625 # If the elements of C++ vtables are in-place function descriptors rather
 626 # than normal function pointers (which may point to code or a descriptor),
 627 # set this to one.
 628 v::int:vtable_function_descriptors:::0:0::0
 629
 630 # Set if the least significant bit of the delta is used instead of the least
 631 # significant bit of the pfn for pointers to virtual member functions.
 632 v::int:vbit_in_delta:::0:0::0
 633
 634 # Advance PC to next instruction in order to skip a permanent breakpoint.
 635 F::void:skip_permanent_breakpoint:struct regcache *regcache:regcache
 636
 637 # Refresh overlay mapped state for section OSECT.
 638 F::void:overlay_update:struct obj_section *osect:osect
 639
 640 M::const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
 641 EOF
 642 }
 643
 644 #
 645 # The .log file
 646 #
 647 exec > new-gdbarch.log
 648 function_list | while do_read
 649 do
 650     cat <<EOF
 651 ${class} ${returntype} ${function} ($formal)
 652 EOF
 653     for r in ${read}
 654     do
 655         eval echo \"\ \ \ \ ${r}=\${${r}}\"
 656     done
 657     if class_is_predicate_p && fallback_default_p
 658     then
 659         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
 660         kill $$
 661         exit 1
 662     fi
 663     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
 664     then
 665         echo "Error: postdefault is useless when invalid_p=0" 1>&2
 666         kill $$
 667         exit 1
 668     fi
 669     if class_is_multiarch_p
 670     then
 671         if class_is_predicate_p ; then :
 672         elif test "x${predefault}" = "x"
 673         then
 674             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
 675             kill $$
 676             exit 1
 677         fi
 678     fi
 679     echo ""
 680 done
 681
 682 exec 1>&2
 683 compare_new gdbarch.log
 684
 685
 686 copyright ()
 687 {
 688 cat <<EOF
 689 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
 690
 691 /* Dynamic architecture support for GDB, the GNU debugger.
 692
 693    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
 694    Free Software Foundation, Inc.
 695
 696    This file is part of GDB.
 697
 698    This program is free software; you can redistribute it and/or modify
 699    it under the terms of the GNU General Public License as published by
 700    the Free Software Foundation; either version 3 of the License, or
 701    (at your option) any later version.
 702
 703    This program is distributed in the hope that it will be useful,
 704    but WITHOUT ANY WARRANTY; without even the implied warranty of
 705    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 706    GNU General Public License for more details.
 707
 708    You should have received a copy of the GNU General Public License
 709    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 710
 711 /* This file was created with the aid of \`\`gdbarch.sh''.
 712
 713    The Bourne shell script \`\`gdbarch.sh'' creates the files
 714    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
 715    against the existing \`\`gdbarch.[hc]''.  Any differences found
 716    being reported.
 717
 718    If editing this file, please also run gdbarch.sh and merge any
 719    changes into that script. Conversely, when making sweeping changes
 720    to this file, modifying gdbarch.sh and using its output may prove
 721    easier. */
 722
 723 EOF
 724 }
 725
 726 #
 727 # The .h file
 728 #
 729
 730 exec > new-gdbarch.h
 731 copyright
 732 cat <<EOF
 733 #ifndef GDBARCH_H
 734 #define GDBARCH_H
 735
 736 struct floatformat;
 737 struct ui_file;
 738 struct frame_info;
 739 struct value;
 740 struct objfile;
 741 struct obj_section;
 742 struct minimal_symbol;
 743 struct regcache;
 744 struct reggroup;
 745 struct regset;
 746 struct disassemble_info;
 747 struct target_ops;
 748 struct obstack;
 749 struct bp_target_info;
 750 struct target_desc;
 751
 752 extern struct gdbarch *current_gdbarch;
 753 EOF
 754
 755 # function typedef's
 756 printf "\n"
 757 printf "\n"
 758 printf "/* The following are pre-initialized by GDBARCH. */\n"
 759 function_list | while do_read
 760 do
 761     if class_is_info_p
 762     then
 763         printf "\n"
 764         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 765         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
 766         if test -n "${macro}"
 767         then
 768             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 769             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 770             printf "#endif\n"
 771             printf "#if !defined (${macro})\n"
 772             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 773             printf "#endif\n"
 774         fi
 775     fi
 776 done
 777
 778 # function typedef's
 779 printf "\n"
 780 printf "\n"
 781 printf "/* The following are initialized by the target dependent code. */\n"
 782 function_list | while do_read
 783 do
 784     if [ -n "${comment}" ]
 785     then
 786         echo "${comment}" | sed \
 787             -e '2 s,#,/*,' \
 788             -e '3,$ s,#,  ,' \
 789             -e '$ s,$, */,'
 790     fi
 791
 792     if class_is_predicate_p
 793     then
 794         if test -n "${macro}"
 795         then
 796             printf "\n"
 797             printf "#if defined (${macro})\n"
 798             printf "/* Legacy for systems yet to multi-arch ${macro} */\n"
 799             printf "#if !defined (${macro}_P)\n"
 800             printf "#define ${macro}_P() (1)\n"
 801             printf "#endif\n"
 802             printf "#endif\n"
 803         fi
 804         printf "\n"
 805         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 806         if test -n "${macro}"
 807         then
 808             printf "#if !defined (GDB_TM_FILE) && defined (${macro}_P)\n"
 809             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 810             printf "#endif\n"
 811             printf "#if !defined (${macro}_P)\n"
 812             printf "#define ${macro}_P() (gdbarch_${function}_p (current_gdbarch))\n"
 813             printf "#endif\n"
 814         fi
 815     fi
 816     if class_is_variable_p
 817     then
 818         printf "\n"
 819         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 820         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
 821         if test -n "${macro}"
 822         then
 823             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 824             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 825             printf "#endif\n"
 826             printf "#if !defined (${macro})\n"
 827             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 828             printf "#endif\n"
 829         fi
 830     fi
 831     if class_is_function_p
 832     then
 833         printf "\n"
 834         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
 835         then
 836             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
 837         elif class_is_multiarch_p
 838         then
 839             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
 840         else
 841             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
 842         fi
 843         if [ "x${formal}" = "xvoid" ]
 844         then
 845           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 846         else
 847           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
 848         fi
 849         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
 850         if test -n "${macro}"
 851         then
 852             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 853             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 854             printf "#endif\n"
 855             if [ "x${actual}" = "x" ]
 856             then
 857                 d="#define ${macro}() (gdbarch_${function} (current_gdbarch))"
 858             elif [ "x${actual}" = "x-" ]
 859             then
 860                 d="#define ${macro} (gdbarch_${function} (current_gdbarch))"
 861             else
 862                 d="#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))"
 863             fi
 864             printf "#if !defined (${macro})\n"
 865             if [ "x${actual}" = "x" ]
 866             then
 867                 printf "#define ${macro}() (gdbarch_${function} (current_gdbarch))\n"
 868             elif [ "x${actual}" = "x-" ]
 869             then
 870                 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 871             else
 872                 printf "#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))\n"
 873             fi
 874             printf "#endif\n"
 875         fi
 876     fi
 877 done
 878
 879 # close it off
 880 cat <<EOF
 881
 882 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 883
 884
 885 /* Mechanism for co-ordinating the selection of a specific
 886    architecture.
 887
 888    GDB targets (*-tdep.c) can register an interest in a specific
 889    architecture.  Other GDB components can register a need to maintain
 890    per-architecture data.
 891
 892    The mechanisms below ensures that there is only a loose connection
 893    between the set-architecture command and the various GDB
 894    components.  Each component can independently register their need
 895    to maintain architecture specific data with gdbarch.
 896
 897    Pragmatics:
 898
 899    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 900    didn't scale.
 901
 902    The more traditional mega-struct containing architecture specific
 903    data for all the various GDB components was also considered.  Since
 904    GDB is built from a variable number of (fairly independent)
 905    components it was determined that the global aproach was not
 906    applicable. */
 907
 908
 909 /* Register a new architectural family with GDB.
 910
 911    Register support for the specified ARCHITECTURE with GDB.  When
 912    gdbarch determines that the specified architecture has been
 913    selected, the corresponding INIT function is called.
 914
 915    --
 916
 917    The INIT function takes two parameters: INFO which contains the
 918    information available to gdbarch about the (possibly new)
 919    architecture; ARCHES which is a list of the previously created
 920    \`\`struct gdbarch'' for this architecture.
 921
 922    The INFO parameter is, as far as possible, be pre-initialized with
 923    information obtained from INFO.ABFD or the global defaults.
 924
 925    The ARCHES parameter is a linked list (sorted most recently used)
 926    of all the previously created architures for this architecture
 927    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 928    values from the previously selected architecture for this
 929    architecture family.  The global \`\`current_gdbarch'' shall not be
 930    used.
 931
 932    The INIT function shall return any of: NULL - indicating that it
 933    doesn't recognize the selected architecture; an existing \`\`struct
 934    gdbarch'' from the ARCHES list - indicating that the new
 935    architecture is just a synonym for an earlier architecture (see
 936    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
 937    - that describes the selected architecture (see gdbarch_alloc()).
 938
 939    The DUMP_TDEP function shall print out all target specific values.
 940    Care should be taken to ensure that the function works in both the
 941    multi-arch and non- multi-arch cases. */
 942
 943 struct gdbarch_list
 944 {
 945   struct gdbarch *gdbarch;
 946   struct gdbarch_list *next;
 947 };
 948
 949 struct gdbarch_info
 950 {
 951   /* Use default: NULL (ZERO). */
 952   const struct bfd_arch_info *bfd_arch_info;
 953
 954   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
 955   int byte_order;
 956
 957   /* Use default: NULL (ZERO). */
 958   bfd *abfd;
 959
 960   /* Use default: NULL (ZERO). */
 961   struct gdbarch_tdep_info *tdep_info;
 962
 963   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
 964   enum gdb_osabi osabi;
 965
 966   /* Use default: NULL (ZERO).  */
 967   const struct target_desc *target_desc;
 968 };
 969
 970 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 971 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 972
 973 /* DEPRECATED - use gdbarch_register() */
 974 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 975
 976 extern void gdbarch_register (enum bfd_architecture architecture,
 977                               gdbarch_init_ftype *,
 978                               gdbarch_dump_tdep_ftype *);
 979
 980
 981 /* Return a freshly allocated, NULL terminated, array of the valid
 982    architecture names.  Since architectures are registered during the
 983    _initialize phase this function only returns useful information
 984    once initialization has been completed. */
 985
 986 extern const char **gdbarch_printable_names (void);
 987
 988
 989 /* Helper function.  Search the list of ARCHES for a GDBARCH that
 990    matches the information provided by INFO. */
 991
 992 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
 993
 994
 995 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
 996    basic initialization using values obtained from the INFO and TDEP
 997    parameters.  set_gdbarch_*() functions are called to complete the
 998    initialization of the object. */
 999
1000 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1001
1002
1003 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1004    It is assumed that the caller freeds the \`\`struct
1005    gdbarch_tdep''. */
1006
1007 extern void gdbarch_free (struct gdbarch *);
1008
1009
1010 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1011    obstack.  The memory is freed when the corresponding architecture
1012    is also freed.  */
1013
1014 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1015 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1016 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1017
1018
1019 /* Helper function. Force an update of the current architecture.
1020
1021    The actual architecture selected is determined by INFO, \`\`(gdb) set
1022    architecture'' et.al., the existing architecture and BFD's default
1023    architecture.  INFO should be initialized to zero and then selected
1024    fields should be updated.
1025
1026    Returns non-zero if the update succeeds */
1027
1028 extern int gdbarch_update_p (struct gdbarch_info info);
1029
1030
1031 /* Helper function.  Find an architecture matching info.
1032
1033    INFO should be initialized using gdbarch_info_init, relevant fields
1034    set, and then finished using gdbarch_info_fill.
1035
1036    Returns the corresponding architecture, or NULL if no matching
1037    architecture was found.  "current_gdbarch" is not updated.  */
1038
1039 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1040
1041
1042 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
1043
1044    FIXME: kettenis/20031124: Of the functions that follow, only
1045    gdbarch_from_bfd is supposed to survive.  The others will
1046    dissappear since in the future GDB will (hopefully) be truly
1047    multi-arch.  However, for now we're still stuck with the concept of
1048    a single active architecture.  */
1049
1050 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1051
1052
1053 /* Register per-architecture data-pointer.
1054
1055    Reserve space for a per-architecture data-pointer.  An identifier
1056    for the reserved data-pointer is returned.  That identifer should
1057    be saved in a local static variable.
1058
1059    Memory for the per-architecture data shall be allocated using
1060    gdbarch_obstack_zalloc.  That memory will be deleted when the
1061    corresponding architecture object is deleted.
1062
1063    When a previously created architecture is re-selected, the
1064    per-architecture data-pointer for that previous architecture is
1065    restored.  INIT() is not re-called.
1066
1067    Multiple registrarants for any architecture are allowed (and
1068    strongly encouraged).  */
1069
1070 struct gdbarch_data;
1071
1072 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1073 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1074 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1075 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1076 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1077                                          struct gdbarch_data *data,
1078                                          void *pointer);
1079
1080 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1081
1082
1083 /* Set the dynamic target-system-dependent parameters (architecture,
1084    byte-order, ...) using information found in the BFD */
1085
1086 extern void set_gdbarch_from_file (bfd *);
1087
1088
1089 /* Initialize the current architecture to the "first" one we find on
1090    our list.  */
1091
1092 extern void initialize_current_architecture (void);
1093
1094 /* gdbarch trace variable */
1095 extern int gdbarch_debug;
1096
1097 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1098
1099 #endif
1100 EOF
1101 exec 1>&2
1102 #../move-if-change new-gdbarch.h gdbarch.h
1103 compare_new gdbarch.h
1104
1105
1106 #
1107 # C file
1108 #
1109
1110 exec > new-gdbarch.c
1111 copyright
1112 cat <<EOF
1113
1114 #include "defs.h"
1115 #include "arch-utils.h"
1116
1117 #include "gdbcmd.h"
1118 #include "inferior.h"
1119 #include "symcat.h"
1120
1121 #include "floatformat.h"
1122
1123 #include "gdb_assert.h"
1124 #include "gdb_string.h"
1125 #include "gdb-events.h"
1126 #include "reggroups.h"
1127 #include "osabi.h"
1128 #include "gdb_obstack.h"
1129
1130 /* Static function declarations */
1131
1132 static void alloc_gdbarch_data (struct gdbarch *);
1133
1134 /* Non-zero if we want to trace architecture code.  */
1135
1136 #ifndef GDBARCH_DEBUG
1137 #define GDBARCH_DEBUG 0
1138 #endif
1139 int gdbarch_debug = GDBARCH_DEBUG;
1140 static void
1141 show_gdbarch_debug (struct ui_file *file, int from_tty,
1142                     struct cmd_list_element *c, const char *value)
1143 {
1144   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1145 }
1146
1147 static const char *
1148 pformat (const struct floatformat **format)
1149 {
1150   if (format == NULL)
1151     return "(null)";
1152   else
1153     /* Just print out one of them - this is only for diagnostics.  */
1154     return format[0]->name;
1155 }
1156
1157 EOF
1158
1159 # gdbarch open the gdbarch object
1160 printf "\n"
1161 printf "/* Maintain the struct gdbarch object */\n"
1162 printf "\n"
1163 printf "struct gdbarch\n"
1164 printf "{\n"
1165 printf "  /* Has this architecture been fully initialized?  */\n"
1166 printf "  int initialized_p;\n"
1167 printf "\n"
1168 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1169 printf "  struct obstack *obstack;\n"
1170 printf "\n"
1171 printf "  /* basic architectural information */\n"
1172 function_list | while do_read
1173 do
1174     if class_is_info_p
1175     then
1176         printf "  ${returntype} ${function};\n"
1177     fi
1178 done
1179 printf "\n"
1180 printf "  /* target specific vector. */\n"
1181 printf "  struct gdbarch_tdep *tdep;\n"
1182 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1183 printf "\n"
1184 printf "  /* per-architecture data-pointers */\n"
1185 printf "  unsigned nr_data;\n"
1186 printf "  void **data;\n"
1187 printf "\n"
1188 printf "  /* per-architecture swap-regions */\n"
1189 printf "  struct gdbarch_swap *swap;\n"
1190 printf "\n"
1191 cat <<EOF
1192   /* Multi-arch values.
1193
1194      When extending this structure you must:
1195
1196      Add the field below.
1197
1198      Declare set/get functions and define the corresponding
1199      macro in gdbarch.h.
1200
1201      gdbarch_alloc(): If zero/NULL is not a suitable default,
1202      initialize the new field.
1203
1204      verify_gdbarch(): Confirm that the target updated the field
1205      correctly.
1206
1207      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1208      field is dumped out
1209
1210      \`\`startup_gdbarch()'': Append an initial value to the static
1211      variable (base values on the host's c-type system).
1212
1213      get_gdbarch(): Implement the set/get functions (probably using
1214      the macro's as shortcuts).
1215
1216      */
1217
1218 EOF
1219 function_list | while do_read
1220 do
1221     if class_is_variable_p
1222     then
1223         printf "  ${returntype} ${function};\n"
1224     elif class_is_function_p
1225     then
1226         printf "  gdbarch_${function}_ftype *${function};\n"
1227     fi
1228 done
1229 printf "};\n"
1230
1231 # A pre-initialized vector
1232 printf "\n"
1233 printf "\n"
1234 cat <<EOF
1235 /* The default architecture uses host values (for want of a better
1236    choice). */
1237 EOF
1238 printf "\n"
1239 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1240 printf "\n"
1241 printf "struct gdbarch startup_gdbarch =\n"
1242 printf "{\n"
1243 printf "  1, /* Always initialized.  */\n"
1244 printf "  NULL, /* The obstack.  */\n"
1245 printf "  /* basic architecture information */\n"
1246 function_list | while do_read
1247 do
1248     if class_is_info_p
1249     then
1250         printf "  ${staticdefault},  /* ${function} */\n"
1251     fi
1252 done
1253 cat <<EOF
1254   /* target specific vector and its dump routine */
1255   NULL, NULL,
1256   /*per-architecture data-pointers and swap regions */
1257   0, NULL, NULL,
1258   /* Multi-arch values */
1259 EOF
1260 function_list | while do_read
1261 do
1262     if class_is_function_p || class_is_variable_p
1263     then
1264         printf "  ${staticdefault},  /* ${function} */\n"
1265     fi
1266 done
1267 cat <<EOF
1268   /* startup_gdbarch() */
1269 };
1270
1271 struct gdbarch *current_gdbarch = &startup_gdbarch;
1272 EOF
1273
1274 # Create a new gdbarch struct
1275 cat <<EOF
1276
1277 /* Create a new \`\`struct gdbarch'' based on information provided by
1278    \`\`struct gdbarch_info''. */
1279 EOF
1280 printf "\n"
1281 cat <<EOF
1282 struct gdbarch *
1283 gdbarch_alloc (const struct gdbarch_info *info,
1284                struct gdbarch_tdep *tdep)
1285 {
1286   /* NOTE: The new architecture variable is named \`\`current_gdbarch''
1287      so that macros such as TARGET_ARCHITECTURE, when expanded, refer to
1288      the current local architecture and not the previous global
1289      architecture.  This ensures that the new architectures initial
1290      values are not influenced by the previous architecture.  Once
1291      everything is parameterised with gdbarch, this will go away.  */
1292   struct gdbarch *current_gdbarch;
1293
1294   /* Create an obstack for allocating all the per-architecture memory,
1295      then use that to allocate the architecture vector.  */
1296   struct obstack *obstack = XMALLOC (struct obstack);
1297   obstack_init (obstack);
1298   current_gdbarch = obstack_alloc (obstack, sizeof (*current_gdbarch));
1299   memset (current_gdbarch, 0, sizeof (*current_gdbarch));
1300   current_gdbarch->obstack = obstack;
1301
1302   alloc_gdbarch_data (current_gdbarch);
1303
1304   current_gdbarch->tdep = tdep;
1305 EOF
1306 printf "\n"
1307 function_list | while do_read
1308 do
1309     if class_is_info_p
1310     then
1311         printf "  current_gdbarch->${function} = info->${function};\n"
1312     fi
1313 done
1314 printf "\n"
1315 printf "  /* Force the explicit initialization of these. */\n"
1316 function_list | while do_read
1317 do
1318     if class_is_function_p || class_is_variable_p
1319     then
1320         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1321         then
1322           printf "  current_gdbarch->${function} = ${predefault};\n"
1323         fi
1324     fi
1325 done
1326 cat <<EOF
1327   /* gdbarch_alloc() */
1328
1329   return current_gdbarch;
1330 }
1331 EOF
1332
1333 # Free a gdbarch struct.
1334 printf "\n"
1335 printf "\n"
1336 cat <<EOF
1337 /* Allocate extra space using the per-architecture obstack.  */
1338
1339 void *
1340 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1341 {
1342   void *data = obstack_alloc (arch->obstack, size);
1343   memset (data, 0, size);
1344   return data;
1345 }
1346
1347
1348 /* Free a gdbarch struct.  This should never happen in normal
1349    operation --- once you've created a gdbarch, you keep it around.
1350    However, if an architecture's init function encounters an error
1351    building the structure, it may need to clean up a partially
1352    constructed gdbarch.  */
1353
1354 void
1355 gdbarch_free (struct gdbarch *arch)
1356 {
1357   struct obstack *obstack;
1358   gdb_assert (arch != NULL);
1359   gdb_assert (!arch->initialized_p);
1360   obstack = arch->obstack;
1361   obstack_free (obstack, 0); /* Includes the ARCH.  */
1362   xfree (obstack);
1363 }
1364 EOF
1365
1366 # verify a new architecture
1367 cat <<EOF
1368
1369
1370 /* Ensure that all values in a GDBARCH are reasonable.  */
1371
1372 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1373    just happens to match the global variable \`\`current_gdbarch''.  That
1374    way macros refering to that variable get the local and not the global
1375    version - ulgh.  Once everything is parameterised with gdbarch, this
1376    will go away. */
1377
1378 static void
1379 verify_gdbarch (struct gdbarch *current_gdbarch)
1380 {
1381   struct ui_file *log;
1382   struct cleanup *cleanups;
1383   long dummy;
1384   char *buf;
1385   log = mem_fileopen ();
1386   cleanups = make_cleanup_ui_file_delete (log);
1387   /* fundamental */
1388   if (current_gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1389     fprintf_unfiltered (log, "\n\tbyte-order");
1390   if (current_gdbarch->bfd_arch_info == NULL)
1391     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1392   /* Check those that need to be defined for the given multi-arch level. */
1393 EOF
1394 function_list | while do_read
1395 do
1396     if class_is_function_p || class_is_variable_p
1397     then
1398         if [ "x${invalid_p}" = "x0" ]
1399         then
1400             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1401         elif class_is_predicate_p
1402         then
1403             printf "  /* Skip verify of ${function}, has predicate */\n"
1404         # FIXME: See do_read for potential simplification
1405         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1406         then
1407             printf "  if (${invalid_p})\n"
1408             printf "    current_gdbarch->${function} = ${postdefault};\n"
1409         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1410         then
1411             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1412             printf "    current_gdbarch->${function} = ${postdefault};\n"
1413         elif [ -n "${postdefault}" ]
1414         then
1415             printf "  if (current_gdbarch->${function} == 0)\n"
1416             printf "    current_gdbarch->${function} = ${postdefault};\n"
1417         elif [ -n "${invalid_p}" ]
1418         then
1419             printf "  if (${invalid_p})\n"
1420             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1421         elif [ -n "${predefault}" ]
1422         then
1423             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1424             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1425         fi
1426     fi
1427 done
1428 cat <<EOF
1429   buf = ui_file_xstrdup (log, &dummy);
1430   make_cleanup (xfree, buf);
1431   if (strlen (buf) > 0)
1432     internal_error (__FILE__, __LINE__,
1433                     _("verify_gdbarch: the following are invalid ...%s"),
1434                     buf);
1435   do_cleanups (cleanups);
1436 }
1437 EOF
1438
1439 # dump the structure
1440 printf "\n"
1441 printf "\n"
1442 cat <<EOF
1443 /* Print out the details of the current architecture. */
1444
1445 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1446    just happens to match the global variable \`\`current_gdbarch''.  That
1447    way macros refering to that variable get the local and not the global
1448    version - ulgh.  Once everything is parameterised with gdbarch, this
1449    will go away. */
1450
1451 void
1452 gdbarch_dump (struct gdbarch *current_gdbarch, struct ui_file *file)
1453 {
1454   const char *gdb_xm_file = "<not-defined>";
1455   const char *gdb_nm_file = "<not-defined>";
1456   const char *gdb_tm_file = "<not-defined>";
1457 #if defined (GDB_XM_FILE)
1458   gdb_xm_file = GDB_XM_FILE;
1459 #endif
1460   fprintf_unfiltered (file,
1461                       "gdbarch_dump: GDB_XM_FILE = %s\\n",
1462                       gdb_xm_file);
1463 #if defined (GDB_NM_FILE)
1464   gdb_nm_file = GDB_NM_FILE;
1465 #endif
1466   fprintf_unfiltered (file,
1467                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1468                       gdb_nm_file);
1469 #if defined (GDB_TM_FILE)
1470   gdb_tm_file = GDB_TM_FILE;
1471 #endif
1472   fprintf_unfiltered (file,
1473                       "gdbarch_dump: GDB_TM_FILE = %s\\n",
1474                       gdb_tm_file);
1475 EOF
1476 function_list | sort -t: -k 4 | while do_read
1477 do
1478     # First the predicate
1479     if class_is_predicate_p
1480     then
1481         if test -n "${macro}"
1482         then
1483             printf "#ifdef ${macro}_P\n"
1484             printf "  fprintf_unfiltered (file,\n"
1485             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1486             printf "                      \"${macro}_P()\",\n"
1487             printf "                      XSTRING (${macro}_P ()));\n"
1488             printf "#endif\n"
1489         fi
1490         printf "  fprintf_unfiltered (file,\n"
1491         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1492         printf "                      gdbarch_${function}_p (current_gdbarch));\n"
1493     fi
1494     # Print the macro definition.
1495     if test -n "${macro}"
1496     then
1497         printf "#ifdef ${macro}\n"
1498         if class_is_function_p
1499         then
1500             printf "  fprintf_unfiltered (file,\n"
1501             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1502             printf "                      \"${macro}(${actual})\",\n"
1503             printf "                      XSTRING (${macro} (${actual})));\n"
1504         else
1505             printf "  fprintf_unfiltered (file,\n"
1506             printf "                      \"gdbarch_dump: ${macro} # %%s\\\\n\",\n"
1507             printf "                      XSTRING (${macro}));\n"
1508         fi
1509         printf "#endif\n"
1510     fi
1511     # Print the corresponding value.
1512     if class_is_function_p
1513     then
1514         printf "  fprintf_unfiltered (file,\n"
1515         printf "                      \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1516         printf "                      (long) current_gdbarch->${function});\n"
1517     else
1518         # It is a variable
1519         case "${print}:${returntype}" in
1520             :CORE_ADDR )
1521                 fmt="0x%s"
1522                 print="paddr_nz (current_gdbarch->${function})"
1523                 ;;
1524             :* )
1525                 fmt="%s"
1526                 print="paddr_d (current_gdbarch->${function})"
1527                 ;;
1528             * )
1529                 fmt="%s"
1530                 ;;
1531         esac
1532         printf "  fprintf_unfiltered (file,\n"
1533         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1534         printf "                      ${print});\n"
1535     fi
1536 done
1537 cat <<EOF
1538   if (current_gdbarch->dump_tdep != NULL)
1539     current_gdbarch->dump_tdep (current_gdbarch, file);
1540 }
1541 EOF
1542
1543
1544 # GET/SET
1545 printf "\n"
1546 cat <<EOF
1547 struct gdbarch_tdep *
1548 gdbarch_tdep (struct gdbarch *gdbarch)
1549 {
1550   if (gdbarch_debug >= 2)
1551     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1552   return gdbarch->tdep;
1553 }
1554 EOF
1555 printf "\n"
1556 function_list | while do_read
1557 do
1558     if class_is_predicate_p
1559     then
1560         printf "\n"
1561         printf "int\n"
1562         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1563         printf "{\n"
1564         printf "  gdb_assert (gdbarch != NULL);\n"
1565         printf "  return ${predicate};\n"
1566         printf "}\n"
1567     fi
1568     if class_is_function_p
1569     then
1570         printf "\n"
1571         printf "${returntype}\n"
1572         if [ "x${formal}" = "xvoid" ]
1573         then
1574           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1575         else
1576           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1577         fi
1578         printf "{\n"
1579         printf "  gdb_assert (gdbarch != NULL);\n"
1580         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1581         if class_is_predicate_p && test -n "${predefault}"
1582         then
1583             # Allow a call to a function with a predicate.
1584             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1585         fi
1586         printf "  if (gdbarch_debug >= 2)\n"
1587         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1588         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1589         then
1590             if class_is_multiarch_p
1591             then
1592                 params="gdbarch"
1593             else
1594                 params=""
1595             fi
1596         else
1597             if class_is_multiarch_p
1598             then
1599                 params="gdbarch, ${actual}"
1600             else
1601                 params="${actual}"
1602             fi
1603         fi
1604         if [ "x${returntype}" = "xvoid" ]
1605         then
1606           printf "  gdbarch->${function} (${params});\n"
1607         else
1608           printf "  return gdbarch->${function} (${params});\n"
1609         fi
1610         printf "}\n"
1611         printf "\n"
1612         printf "void\n"
1613         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1614         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1615         printf "{\n"
1616         printf "  gdbarch->${function} = ${function};\n"
1617         printf "}\n"
1618     elif class_is_variable_p
1619     then
1620         printf "\n"
1621         printf "${returntype}\n"
1622         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1623         printf "{\n"
1624         printf "  gdb_assert (gdbarch != NULL);\n"
1625         if [ "x${invalid_p}" = "x0" ]
1626         then
1627             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1628         elif [ -n "${invalid_p}" ]
1629         then
1630             printf "  /* Check variable is valid.  */\n"
1631             printf "  gdb_assert (!(${invalid_p}));\n"
1632         elif [ -n "${predefault}" ]
1633         then
1634             printf "  /* Check variable changed from pre-default.  */\n"
1635             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1636         fi
1637         printf "  if (gdbarch_debug >= 2)\n"
1638         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1639         printf "  return gdbarch->${function};\n"
1640         printf "}\n"
1641         printf "\n"
1642         printf "void\n"
1643         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1644         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1645         printf "{\n"
1646         printf "  gdbarch->${function} = ${function};\n"
1647         printf "}\n"
1648     elif class_is_info_p
1649     then
1650         printf "\n"
1651         printf "${returntype}\n"
1652         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1653         printf "{\n"
1654         printf "  gdb_assert (gdbarch != NULL);\n"
1655         printf "  if (gdbarch_debug >= 2)\n"
1656         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1657         printf "  return gdbarch->${function};\n"
1658         printf "}\n"
1659     fi
1660 done
1661
1662 # All the trailing guff
1663 cat <<EOF
1664
1665
1666 /* Keep a registry of per-architecture data-pointers required by GDB
1667    modules. */
1668
1669 struct gdbarch_data
1670 {
1671   unsigned index;
1672   int init_p;
1673   gdbarch_data_pre_init_ftype *pre_init;
1674   gdbarch_data_post_init_ftype *post_init;
1675 };
1676
1677 struct gdbarch_data_registration
1678 {
1679   struct gdbarch_data *data;
1680   struct gdbarch_data_registration *next;
1681 };
1682
1683 struct gdbarch_data_registry
1684 {
1685   unsigned nr;
1686   struct gdbarch_data_registration *registrations;
1687 };
1688
1689 struct gdbarch_data_registry gdbarch_data_registry =
1690 {
1691   0, NULL,
1692 };
1693
1694 static struct gdbarch_data *
1695 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1696                        gdbarch_data_post_init_ftype *post_init)
1697 {
1698   struct gdbarch_data_registration **curr;
1699   /* Append the new registraration.  */
1700   for (curr = &gdbarch_data_registry.registrations;
1701        (*curr) != NULL;
1702        curr = &(*curr)->next);
1703   (*curr) = XMALLOC (struct gdbarch_data_registration);
1704   (*curr)->next = NULL;
1705   (*curr)->data = XMALLOC (struct gdbarch_data);
1706   (*curr)->data->index = gdbarch_data_registry.nr++;
1707   (*curr)->data->pre_init = pre_init;
1708   (*curr)->data->post_init = post_init;
1709   (*curr)->data->init_p = 1;
1710   return (*curr)->data;
1711 }
1712
1713 struct gdbarch_data *
1714 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1715 {
1716   return gdbarch_data_register (pre_init, NULL);
1717 }
1718
1719 struct gdbarch_data *
1720 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1721 {
1722   return gdbarch_data_register (NULL, post_init);
1723 }
1724
1725 /* Create/delete the gdbarch data vector. */
1726
1727 static void
1728 alloc_gdbarch_data (struct gdbarch *gdbarch)
1729 {
1730   gdb_assert (gdbarch->data == NULL);
1731   gdbarch->nr_data = gdbarch_data_registry.nr;
1732   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1733 }
1734
1735 /* Initialize the current value of the specified per-architecture
1736    data-pointer. */
1737
1738 void
1739 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1740                              struct gdbarch_data *data,
1741                              void *pointer)
1742 {
1743   gdb_assert (data->index < gdbarch->nr_data);
1744   gdb_assert (gdbarch->data[data->index] == NULL);
1745   gdb_assert (data->pre_init == NULL);
1746   gdbarch->data[data->index] = pointer;
1747 }
1748
1749 /* Return the current value of the specified per-architecture
1750    data-pointer. */
1751
1752 void *
1753 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1754 {
1755   gdb_assert (data->index < gdbarch->nr_data);
1756   if (gdbarch->data[data->index] == NULL)
1757     {
1758       /* The data-pointer isn't initialized, call init() to get a
1759          value.  */
1760       if (data->pre_init != NULL)
1761         /* Mid architecture creation: pass just the obstack, and not
1762            the entire architecture, as that way it isn't possible for
1763            pre-init code to refer to undefined architecture
1764            fields.  */
1765         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1766       else if (gdbarch->initialized_p
1767                && data->post_init != NULL)
1768         /* Post architecture creation: pass the entire architecture
1769            (as all fields are valid), but be careful to also detect
1770            recursive references.  */
1771         {
1772           gdb_assert (data->init_p);
1773           data->init_p = 0;
1774           gdbarch->data[data->index] = data->post_init (gdbarch);
1775           data->init_p = 1;
1776         }
1777       else
1778         /* The architecture initialization hasn't completed - punt -
1779          hope that the caller knows what they are doing.  Once
1780          deprecated_set_gdbarch_data has been initialized, this can be
1781          changed to an internal error.  */
1782         return NULL;
1783       gdb_assert (gdbarch->data[data->index] != NULL);
1784     }
1785   return gdbarch->data[data->index];
1786 }
1787
1788
1789 /* Keep a registry of the architectures known by GDB. */
1790
1791 struct gdbarch_registration
1792 {
1793   enum bfd_architecture bfd_architecture;
1794   gdbarch_init_ftype *init;
1795   gdbarch_dump_tdep_ftype *dump_tdep;
1796   struct gdbarch_list *arches;
1797   struct gdbarch_registration *next;
1798 };
1799
1800 static struct gdbarch_registration *gdbarch_registry = NULL;
1801
1802 static void
1803 append_name (const char ***buf, int *nr, const char *name)
1804 {
1805   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1806   (*buf)[*nr] = name;
1807   *nr += 1;
1808 }
1809
1810 const char **
1811 gdbarch_printable_names (void)
1812 {
1813   /* Accumulate a list of names based on the registed list of
1814      architectures. */
1815   enum bfd_architecture a;
1816   int nr_arches = 0;
1817   const char **arches = NULL;
1818   struct gdbarch_registration *rego;
1819   for (rego = gdbarch_registry;
1820        rego != NULL;
1821        rego = rego->next)
1822     {
1823       const struct bfd_arch_info *ap;
1824       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1825       if (ap == NULL)
1826         internal_error (__FILE__, __LINE__,
1827                         _("gdbarch_architecture_names: multi-arch unknown"));
1828       do
1829         {
1830           append_name (&arches, &nr_arches, ap->printable_name);
1831           ap = ap->next;
1832         }
1833       while (ap != NULL);
1834     }
1835   append_name (&arches, &nr_arches, NULL);
1836   return arches;
1837 }
1838
1839
1840 void
1841 gdbarch_register (enum bfd_architecture bfd_architecture,
1842                   gdbarch_init_ftype *init,
1843                   gdbarch_dump_tdep_ftype *dump_tdep)
1844 {
1845   struct gdbarch_registration **curr;
1846   const struct bfd_arch_info *bfd_arch_info;
1847   /* Check that BFD recognizes this architecture */
1848   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1849   if (bfd_arch_info == NULL)
1850     {
1851       internal_error (__FILE__, __LINE__,
1852                       _("gdbarch: Attempt to register unknown architecture (%d)"),
1853                       bfd_architecture);
1854     }
1855   /* Check that we haven't seen this architecture before */
1856   for (curr = &gdbarch_registry;
1857        (*curr) != NULL;
1858        curr = &(*curr)->next)
1859     {
1860       if (bfd_architecture == (*curr)->bfd_architecture)
1861         internal_error (__FILE__, __LINE__,
1862                         _("gdbarch: Duplicate registraration of architecture (%s)"),
1863                         bfd_arch_info->printable_name);
1864     }
1865   /* log it */
1866   if (gdbarch_debug)
1867     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
1868                         bfd_arch_info->printable_name,
1869                         (long) init);
1870   /* Append it */
1871   (*curr) = XMALLOC (struct gdbarch_registration);
1872   (*curr)->bfd_architecture = bfd_architecture;
1873   (*curr)->init = init;
1874   (*curr)->dump_tdep = dump_tdep;
1875   (*curr)->arches = NULL;
1876   (*curr)->next = NULL;
1877 }
1878
1879 void
1880 register_gdbarch_init (enum bfd_architecture bfd_architecture,
1881                        gdbarch_init_ftype *init)
1882 {
1883   gdbarch_register (bfd_architecture, init, NULL);
1884 }
1885
1886
1887 /* Look for an architecture using gdbarch_info.  */
1888
1889 struct gdbarch_list *
1890 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
1891                              const struct gdbarch_info *info)
1892 {
1893   for (; arches != NULL; arches = arches->next)
1894     {
1895       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
1896         continue;
1897       if (info->byte_order != arches->gdbarch->byte_order)
1898         continue;
1899       if (info->osabi != arches->gdbarch->osabi)
1900         continue;
1901       if (info->target_desc != arches->gdbarch->target_desc)
1902         continue;
1903       return arches;
1904     }
1905   return NULL;
1906 }
1907
1908
1909 /* Find an architecture that matches the specified INFO.  Create a new
1910    architecture if needed.  Return that new architecture.  Assumes
1911    that there is no current architecture.  */
1912
1913 static struct gdbarch *
1914 find_arch_by_info (struct gdbarch_info info)
1915 {
1916   struct gdbarch *new_gdbarch;
1917   struct gdbarch_registration *rego;
1918
1919   /* The existing architecture has been swapped out - all this code
1920      works from a clean slate.  */
1921   gdb_assert (current_gdbarch == NULL);
1922
1923   /* Fill in missing parts of the INFO struct using a number of
1924      sources: "set ..."; INFOabfd supplied; and the global
1925      defaults.  */
1926   gdbarch_info_fill (&info);
1927
1928   /* Must have found some sort of architecture. */
1929   gdb_assert (info.bfd_arch_info != NULL);
1930
1931   if (gdbarch_debug)
1932     {
1933       fprintf_unfiltered (gdb_stdlog,
1934                           "find_arch_by_info: info.bfd_arch_info %s\n",
1935                           (info.bfd_arch_info != NULL
1936                            ? info.bfd_arch_info->printable_name
1937                            : "(null)"));
1938       fprintf_unfiltered (gdb_stdlog,
1939                           "find_arch_by_info: info.byte_order %d (%s)\n",
1940                           info.byte_order,
1941                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
1942                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
1943                            : "default"));
1944       fprintf_unfiltered (gdb_stdlog,
1945                           "find_arch_by_info: info.osabi %d (%s)\n",
1946                           info.osabi, gdbarch_osabi_name (info.osabi));
1947       fprintf_unfiltered (gdb_stdlog,
1948                           "find_arch_by_info: info.abfd 0x%lx\n",
1949                           (long) info.abfd);
1950       fprintf_unfiltered (gdb_stdlog,
1951                           "find_arch_by_info: info.tdep_info 0x%lx\n",
1952                           (long) info.tdep_info);
1953     }
1954
1955   /* Find the tdep code that knows about this architecture.  */
1956   for (rego = gdbarch_registry;
1957        rego != NULL;
1958        rego = rego->next)
1959     if (rego->bfd_architecture == info.bfd_arch_info->arch)
1960       break;
1961   if (rego == NULL)
1962     {
1963       if (gdbarch_debug)
1964         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1965                             "No matching architecture\n");
1966       return 0;
1967     }
1968
1969   /* Ask the tdep code for an architecture that matches "info".  */
1970   new_gdbarch = rego->init (info, rego->arches);
1971
1972   /* Did the tdep code like it?  No.  Reject the change and revert to
1973      the old architecture.  */
1974   if (new_gdbarch == NULL)
1975     {
1976       if (gdbarch_debug)
1977         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1978                             "Target rejected architecture\n");
1979       return NULL;
1980     }
1981
1982   /* Is this a pre-existing architecture (as determined by already
1983      being initialized)?  Move it to the front of the architecture
1984      list (keeping the list sorted Most Recently Used).  */
1985   if (new_gdbarch->initialized_p)
1986     {
1987       struct gdbarch_list **list;
1988       struct gdbarch_list *this;
1989       if (gdbarch_debug)
1990         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1991                             "Previous architecture 0x%08lx (%s) selected\n",
1992                             (long) new_gdbarch,
1993                             new_gdbarch->bfd_arch_info->printable_name);
1994       /* Find the existing arch in the list.  */
1995       for (list = &rego->arches;
1996            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
1997            list = &(*list)->next);
1998       /* It had better be in the list of architectures.  */
1999       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2000       /* Unlink THIS.  */
2001       this = (*list);
2002       (*list) = this->next;
2003       /* Insert THIS at the front.  */
2004       this->next = rego->arches;
2005       rego->arches = this;
2006       /* Return it.  */
2007       return new_gdbarch;
2008     }
2009
2010   /* It's a new architecture.  */
2011   if (gdbarch_debug)
2012     fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2013                         "New architecture 0x%08lx (%s) selected\n",
2014                         (long) new_gdbarch,
2015                         new_gdbarch->bfd_arch_info->printable_name);
2016
2017   /* Insert the new architecture into the front of the architecture
2018      list (keep the list sorted Most Recently Used).  */
2019   {
2020     struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2021     this->next = rego->arches;
2022     this->gdbarch = new_gdbarch;
2023     rego->arches = this;
2024   }
2025
2026   /* Check that the newly installed architecture is valid.  Plug in
2027      any post init values.  */
2028   new_gdbarch->dump_tdep = rego->dump_tdep;
2029   verify_gdbarch (new_gdbarch);
2030   new_gdbarch->initialized_p = 1;
2031
2032   if (gdbarch_debug)
2033     gdbarch_dump (new_gdbarch, gdb_stdlog);
2034
2035   return new_gdbarch;
2036 }
2037
2038 struct gdbarch *
2039 gdbarch_find_by_info (struct gdbarch_info info)
2040 {
2041   struct gdbarch *new_gdbarch;
2042
2043   /* Save the previously selected architecture, setting the global to
2044      NULL.  This stops things like gdbarch->init() trying to use the
2045      previous architecture's configuration.  The previous architecture
2046      may not even be of the same architecture family.  The most recent
2047      architecture of the same family is found at the head of the
2048      rego->arches list.  */
2049   struct gdbarch *old_gdbarch = current_gdbarch;
2050   current_gdbarch = NULL;
2051
2052   /* Find the specified architecture.  */
2053   new_gdbarch = find_arch_by_info (info);
2054
2055   /* Restore the existing architecture.  */
2056   gdb_assert (current_gdbarch == NULL);
2057   current_gdbarch = old_gdbarch;
2058
2059   return new_gdbarch;
2060 }
2061
2062 /* Make the specified architecture current.  */
2063
2064 void
2065 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2066 {
2067   gdb_assert (new_gdbarch != NULL);
2068   gdb_assert (current_gdbarch != NULL);
2069   gdb_assert (new_gdbarch->initialized_p);
2070   current_gdbarch = new_gdbarch;
2071   architecture_changed_event ();
2072   reinit_frame_cache ();
2073 }
2074
2075 extern void _initialize_gdbarch (void);
2076
2077 void
2078 _initialize_gdbarch (void)
2079 {
2080   struct cmd_list_element *c;
2081
2082   add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2083 Set architecture debugging."), _("\\
2084 Show architecture debugging."), _("\\
2085 When non-zero, architecture debugging is enabled."),
2086                             NULL,
2087                             show_gdbarch_debug,
2088                             &setdebuglist, &showdebuglist);
2089 }
2090 EOF
2091
2092 # close things off
2093 exec 1>&2
2094 #../move-if-change new-gdbarch.c gdbarch.c
2095 compare_new gdbarch.c