gdb/gdbarch.sh

   1 #!/bin/sh -u
   2
   3 # Architecture commands for GDB, the GNU debugger.
   4 #
   5 # Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free
   6 # 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 2 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, write to the Free Software
  22 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23
  24 # Make certain that the script is running in an internationalized
  25 # environment.
  26 LANG=c ; export LANG
  27 LC_ALL=c ; export LC_ALL
  28
  29
  30 compare_new ()
  31 {
  32     file=$1
  33     if test ! -r ${file}
  34     then
  35         echo "${file} missing? cp new-${file} ${file}" 1>&2
  36     elif diff -u ${file} new-${file}
  37     then
  38         echo "${file} unchanged" 1>&2
  39     else
  40         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  41     fi
  42 }
  43
  44
  45 # Format of the input table
  46 read="class macro returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
  47
  48 do_read ()
  49 {
  50     comment=""
  51     class=""
  52     while read line
  53     do
  54         if test "${line}" = ""
  55         then
  56             continue
  57         elif test "${line}" = "#" -a "${comment}" = ""
  58         then
  59             continue
  60         elif expr "${line}" : "#" > /dev/null
  61         then
  62             comment="${comment}
  63 ${line}"
  64         else
  65
  66             # The semantics of IFS varies between different SH's.  Some
  67             # treat ``::' as three fields while some treat it as just too.
  68             # Work around this by eliminating ``::'' ....
  69             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  70
  71             OFS="${IFS}" ; IFS="[:]"
  72             eval read ${read} <<EOF
  73 ${line}
  74 EOF
  75             IFS="${OFS}"
  76
  77             if test -n "${garbage_at_eol}"
  78             then
  79                 echo "Garbage at end-of-line in ${line}" 1>&2
  80                 kill $$
  81                 exit 1
  82             fi
  83
  84             # .... and then going back through each field and strip out those
  85             # that ended up with just that space character.
  86             for r in ${read}
  87             do
  88                 if eval test \"\${${r}}\" = \"\ \"
  89                 then
  90                     eval ${r}=""
  91                 fi
  92             done
  93
  94             FUNCTION=`echo ${function} | tr '[a-z]' '[A-Z]'`
  95             if test "x${macro}" = "x="
  96             then
  97                 # Provide a UCASE version of function (for when there isn't MACRO)
  98                 macro="${FUNCTION}"
  99             elif test "${macro}" = "${FUNCTION}"
 100             then
 101                 echo "${function}: Specify = for macro field" 1>&2
 102                 kill $$
 103                 exit 1
 104             fi
 105
 106             # Check that macro definition wasn't supplied for multi-arch
 107             case "${class}" in
 108                 [mM] )
 109                     if test "${macro}" != ""
 110                     then
 111                         echo "Error: Function ${function} multi-arch yet macro ${macro} supplied" 1>&2
 112                         kill $$
 113                         exit 1
 114                     fi
 115             esac
 116
 117             case "${class}" in
 118                 m ) staticdefault="${predefault}" ;;
 119                 M ) staticdefault="0" ;;
 120                 * ) test "${staticdefault}" || staticdefault=0 ;;
 121             esac
 122
 123             case "${class}" in
 124             F | V | M )
 125                 case "${invalid_p}" in
 126                 "" )
 127                     if test -n "${predefault}"
 128                     then
 129                         #invalid_p="gdbarch->${function} == ${predefault}"
 130                         predicate="gdbarch->${function} != ${predefault}"
 131                     elif class_is_variable_p
 132                     then
 133                         predicate="gdbarch->${function} != 0"
 134                     elif class_is_function_p
 135                     then
 136                         predicate="gdbarch->${function} != NULL"
 137                     fi
 138                     ;;
 139                 * )
 140                     echo "Predicate function ${function} with invalid_p." 1>&2
 141                     kill $$
 142                     exit 1
 143                     ;;
 144                 esac
 145             esac
 146
 147             # PREDEFAULT is a valid fallback definition of MEMBER when
 148             # multi-arch is not enabled.  This ensures that the
 149             # default value, when multi-arch is the same as the
 150             # default value when not multi-arch.  POSTDEFAULT is
 151             # always a valid definition of MEMBER as this again
 152             # ensures consistency.
 153
 154             if [ -n "${postdefault}" ]
 155             then
 156                 fallbackdefault="${postdefault}"
 157             elif [ -n "${predefault}" ]
 158             then
 159                 fallbackdefault="${predefault}"
 160             else
 161                 fallbackdefault="0"
 162             fi
 163
 164             #NOT YET: See gdbarch.log for basic verification of
 165             # database
 166
 167             break
 168         fi
 169     done
 170     if [ -n "${class}" ]
 171     then
 172         true
 173     else
 174         false
 175     fi
 176 }
 177
 178
 179 fallback_default_p ()
 180 {
 181     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 182         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 183 }
 184
 185 class_is_variable_p ()
 186 {
 187     case "${class}" in
 188         *v* | *V* ) true ;;
 189         * ) false ;;
 190     esac
 191 }
 192
 193 class_is_function_p ()
 194 {
 195     case "${class}" in
 196         *f* | *F* | *m* | *M* ) true ;;
 197         * ) false ;;
 198     esac
 199 }
 200
 201 class_is_multiarch_p ()
 202 {
 203     case "${class}" in
 204         *m* | *M* ) true ;;
 205         * ) false ;;
 206     esac
 207 }
 208
 209 class_is_predicate_p ()
 210 {
 211     case "${class}" in
 212         *F* | *V* | *M* ) true ;;
 213         * ) false ;;
 214     esac
 215 }
 216
 217 class_is_info_p ()
 218 {
 219     case "${class}" in
 220         *i* ) true ;;
 221         * ) false ;;
 222     esac
 223 }
 224
 225
 226 # dump out/verify the doco
 227 for field in ${read}
 228 do
 229   case ${field} in
 230
 231     class ) : ;;
 232
 233         # # -> line disable
 234         # f -> function
 235         #   hiding a function
 236         # F -> function + predicate
 237         #   hiding a function + predicate to test function validity
 238         # v -> variable
 239         #   hiding a variable
 240         # V -> variable + predicate
 241         #   hiding a variable + predicate to test variables validity
 242         # i -> set from info
 243         #   hiding something from the ``struct info'' object
 244         # m -> multi-arch function
 245         #   hiding a multi-arch function (parameterised with the architecture)
 246         # M -> multi-arch function + predicate
 247         #   hiding a multi-arch function + predicate to test function validity
 248
 249     macro ) : ;;
 250
 251         # The name of the legacy C macro by which this method can be
 252         # accessed.  If empty, no macro is defined.  If "=", a macro
 253         # formed from the upper-case function name is used.
 254
 255     returntype ) : ;;
 256
 257         # For functions, the return type; for variables, the data type
 258
 259     function ) : ;;
 260
 261         # For functions, the member function name; for variables, the
 262         # variable name.  Member function names are always prefixed with
 263         # ``gdbarch_'' for name-space purity.
 264
 265     formal ) : ;;
 266
 267         # The formal argument list.  It is assumed that the formal
 268         # argument list includes the actual name of each list element.
 269         # A function with no arguments shall have ``void'' as the
 270         # formal argument list.
 271
 272     actual ) : ;;
 273
 274         # The list of actual arguments.  The arguments specified shall
 275         # match the FORMAL list given above.  Functions with out
 276         # arguments leave this blank.
 277
 278     staticdefault ) : ;;
 279
 280         # To help with the GDB startup a static gdbarch object is
 281         # created.  STATICDEFAULT is the value to insert into that
 282         # static gdbarch object.  Since this a static object only
 283         # simple expressions can be used.
 284
 285         # If STATICDEFAULT is empty, zero is used.
 286
 287     predefault ) : ;;
 288
 289         # An initial value to assign to MEMBER of the freshly
 290         # malloc()ed gdbarch object.  After initialization, the
 291         # freshly malloc()ed object is passed to the target
 292         # architecture code for further updates.
 293
 294         # If PREDEFAULT is empty, zero is used.
 295
 296         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 297         # INVALID_P are specified, PREDEFAULT will be used as the
 298         # default for the non- multi-arch target.
 299
 300         # A zero PREDEFAULT function will force the fallback to call
 301         # internal_error().
 302
 303         # Variable declarations can refer to ``gdbarch'' which will
 304         # contain the current architecture.  Care should be taken.
 305
 306     postdefault ) : ;;
 307
 308         # A value to assign to MEMBER of the new gdbarch object should
 309         # the target architecture code fail to change the PREDEFAULT
 310         # value.
 311
 312         # If POSTDEFAULT is empty, no post update is performed.
 313
 314         # If both INVALID_P and POSTDEFAULT are non-empty then
 315         # INVALID_P will be used to determine if MEMBER should be
 316         # changed to POSTDEFAULT.
 317
 318         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 319         # specified, POSTDEFAULT will be used as the default for the
 320         # non- multi-arch target (regardless of the value of
 321         # PREDEFAULT).
 322
 323         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 324
 325         # Variable declarations can refer to ``current_gdbarch'' which
 326         # will contain the current architecture.  Care should be
 327         # taken.
 328
 329     invalid_p ) : ;;
 330
 331         # A predicate equation that validates MEMBER.  Non-zero is
 332         # returned if the code creating the new architecture failed to
 333         # initialize MEMBER or the initialized the member is invalid.
 334         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 335         # that value.  If POSTDEFAULT is empty then internal_error()
 336         # is called.
 337
 338         # If INVALID_P is empty, a check that MEMBER is no longer
 339         # equal to PREDEFAULT is used.
 340
 341         # The expression ``0'' disables the INVALID_P check making
 342         # PREDEFAULT a legitimate value.
 343
 344         # See also PREDEFAULT and POSTDEFAULT.
 345
 346     print ) : ;;
 347
 348         # An optional expression that convers MEMBER to a value
 349         # suitable for formatting using %s.
 350
 351         # If PRINT is empty, paddr_nz (for CORE_ADDR) or paddr_d
 352         # (anything else) is used.
 353
 354     garbage_at_eol ) : ;;
 355
 356         # Catches stray fields.
 357
 358     *)
 359         echo "Bad field ${field}"
 360         exit 1;;
 361   esac
 362 done
 363
 364
 365 function_list ()
 366 {
 367   # See below (DOCO) for description of each field
 368   cat <<EOF
 369 i:TARGET_ARCHITECTURE:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::TARGET_ARCHITECTURE->printable_name
 370 #
 371 i:TARGET_BYTE_ORDER:int:byte_order:::BFD_ENDIAN_BIG
 372 #
 373 i:TARGET_OSABI:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
 374 # Number of bits in a char or unsigned char for the target machine.
 375 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 376 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 377 #
 378 # Number of bits in a short or unsigned short for the target machine.
 379 v:TARGET_SHORT_BIT:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 380 # Number of bits in an int or unsigned int for the target machine.
 381 v:TARGET_INT_BIT:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 382 # Number of bits in a long or unsigned long for the target machine.
 383 v:TARGET_LONG_BIT:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 384 # Number of bits in a long long or unsigned long long for the target
 385 # machine.
 386 v:TARGET_LONG_LONG_BIT:int:long_long_bit:::8 * sizeof (LONGEST):2*TARGET_LONG_BIT::0
 387
 388 # The ABI default bit-size and format for "float", "double", and "long
 389 # double".  These bit/format pairs should eventually be combined into
 390 # a single object.  For the moment, just initialize them as a pair.
 391
 392 v:TARGET_FLOAT_BIT:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 393 v:TARGET_FLOAT_FORMAT:const struct floatformat *:float_format:::::default_float_format (current_gdbarch)::pformat (current_gdbarch->float_format)
 394 v:TARGET_DOUBLE_BIT:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 395 v:TARGET_DOUBLE_FORMAT:const struct floatformat *:double_format:::::default_double_format (current_gdbarch)::pformat (current_gdbarch->double_format)
 396 v:TARGET_LONG_DOUBLE_BIT:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
 397 v:TARGET_LONG_DOUBLE_FORMAT:const struct floatformat *:long_double_format:::::default_double_format (current_gdbarch)::pformat (current_gdbarch->long_double_format)
 398
 399 # For most targets, a pointer on the target and its representation as an
 400 # address in GDB have the same size and "look the same".  For such a
 401 # target, you need only set TARGET_PTR_BIT / ptr_bit and TARGET_ADDR_BIT
 402 # / addr_bit will be set from it.
 403 #
 404 # If TARGET_PTR_BIT and TARGET_ADDR_BIT are different, you'll probably
 405 # also need to set POINTER_TO_ADDRESS and ADDRESS_TO_POINTER as well.
 406 #
 407 # ptr_bit is the size of a pointer on the target
 408 v:TARGET_PTR_BIT:int:ptr_bit:::8 * sizeof (void*):TARGET_INT_BIT::0
 409 # addr_bit is the size of a target address as represented in gdb
 410 v:TARGET_ADDR_BIT:int:addr_bit:::8 * sizeof (void*):0:TARGET_PTR_BIT:
 411 # Number of bits in a BFD_VMA for the target object file format.
 412 v:TARGET_BFD_VMA_BIT:int:bfd_vma_bit:::8 * sizeof (void*):TARGET_ARCHITECTURE->bits_per_address::0
 413 #
 414 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 415 v:TARGET_CHAR_SIGNED:int:char_signed:::1:-1:1
 416 #
 417 F:TARGET_READ_PC:CORE_ADDR:read_pc:ptid_t ptid:ptid
 418 f:TARGET_WRITE_PC:void:write_pc:CORE_ADDR val, ptid_t ptid:val, ptid:0:generic_target_write_pc::0
 419 # UNWIND_SP is a direct replacement for TARGET_READ_SP.
 420 F:TARGET_READ_SP:CORE_ADDR:read_sp:void
 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:TARGET_VIRTUAL_FRAME_POINTER: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 # 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 # REGISTER_TYPE is a direct replacement for DEPRECATED_REGISTER_VIRTUAL_TYPE.
 456 M::struct type *:register_type:int reg_nr:reg_nr
 457 # If the value returned by DEPRECATED_REGISTER_BYTE agrees with the
 458 # register offsets computed using just REGISTER_TYPE, this can be
 459 # deleted.  See: maint print registers.  NOTE: cagney/2002-05-02: This
 460 # function with predicate has a valid (callable) initial value.  As a
 461 # consequence, even when the predicate is false, the corresponding
 462 # function works.  This simplifies the migration process - old code,
 463 # calling DEPRECATED_REGISTER_BYTE, doesn't need to be modified.
 464 F:=:int:deprecated_register_byte:int reg_nr:reg_nr:generic_register_byte:generic_register_byte
 465
 466 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
 467 M::struct frame_id:unwind_dummy_id:struct frame_info *info:info
 468 # Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
 469 # DEPRECATED_FP_REGNUM.
 470 v:=:int:deprecated_fp_regnum:::-1:-1::0
 471
 472 # See gdbint.texinfo.  See infcall.c.  New, all singing all dancing,
 473 # replacement for DEPRECATED_PUSH_ARGUMENTS.
 474 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
 475 # PUSH_DUMMY_CALL is a direct replacement for DEPRECATED_PUSH_ARGUMENTS.
 476 F:=:CORE_ADDR:deprecated_push_arguments:int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr:nargs, args, sp, struct_return, struct_addr
 477 # DEPRECATED_REGISTER_SIZE can be deleted.
 478 v:=:int:deprecated_register_size
 479 v:=:int:call_dummy_location::::AT_ENTRY_POINT::0
 480 M::CORE_ADDR:push_dummy_code:CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr:sp, funaddr, using_gcc, args, nargs, value_type, real_pc, bp_addr
 481
 482 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
 483 M::void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 484 M::void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 485 # MAP a GDB RAW register number onto a simulator register number.  See
 486 # also include/...-sim.h.
 487 f:=:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
 488 F:=:int:register_bytes_ok:long nr_bytes:nr_bytes
 489 f:=:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
 490 f:=:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
 491 # setjmp/longjmp support.
 492 F:=:int:get_longjmp_target:CORE_ADDR *pc:pc
 493 #
 494 v:=:int:believe_pcc_promotion:::::::
 495 #
 496 f:=:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
 497 f:=:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
 498 f:=:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
 499 #
 500 f:=:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
 501 f:=:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
 502 M::CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
 503 #
 504 # NOTE: cagney/2003-03-24: Replaced by PUSH_ARGUMENTS.
 505 F:=:void:deprecated_store_struct_return:CORE_ADDR addr, CORE_ADDR sp:addr, sp
 506
 507 # It has been suggested that this, well actually its predecessor,
 508 # should take the type/value of the function to be called and not the
 509 # return type.  This is left as an exercise for the reader.
 510
 511 # NOTE: cagney/2004-06-13: The function stack.c:return_command uses
 512 # the predicate with default hack to avoid calling STORE_RETURN_VALUE
 513 # (via legacy_return_value), when a small struct is involved.
 514
 515 M::enum return_value_convention:return_value:struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:valtype, regcache, readbuf, writebuf::legacy_return_value
 516
 517 # The deprecated methods EXTRACT_RETURN_VALUE, STORE_RETURN_VALUE,
 518 # DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS and
 519 # DEPRECATED_USE_STRUCT_CONVENTION have all been folded into
 520 # RETURN_VALUE.
 521
 522 f:=:void:extract_return_value:struct type *type, struct regcache *regcache, gdb_byte *valbuf:type, regcache, valbuf::legacy_extract_return_value::0
 523 f:=:void:store_return_value:struct type *type, struct regcache *regcache, const gdb_byte *valbuf:type, regcache, valbuf::legacy_store_return_value::0
 524 f:=:void:deprecated_extract_return_value:struct type *type, gdb_byte *regbuf, gdb_byte *valbuf:type, regbuf, valbuf
 525 f:=:void:deprecated_store_return_value:struct type *type, gdb_byte *valbuf:type, valbuf
 526 f:=:int:deprecated_use_struct_convention:int gcc_p, struct type *value_type:gcc_p, value_type::generic_use_struct_convention::0
 527
 528 # As of 2004-01-17 only the 32-bit SPARC ABI has been identified as an
 529 # ABI suitable for the implementation of a robust extract
 530 # struct-convention return-value address method (the sparc saves the
 531 # address in the callers frame).  All the other cases so far examined,
 532 # the DEPRECATED_EXTRACT_STRUCT_VALUE implementation has been
 533 # erreneous - the code was incorrectly assuming that the return-value
 534 # address, stored in a register, was preserved across the entire
 535 # function call.
 536
 537 # For the moment retain DEPRECATED_EXTRACT_STRUCT_VALUE as a marker of
 538 # the ABIs that are still to be analyzed - perhaps this should simply
 539 # be deleted.  The commented out extract_returned_value_address method
 540 # is provided as a starting point for the 32-bit SPARC.  It, or
 541 # something like it, along with changes to both infcmd.c and stack.c
 542 # will be needed for that case to work.  NB: It is passed the callers
 543 # frame since it is only after the callee has returned that this
 544 # function is used.
 545
 546 #M::CORE_ADDR:extract_returned_value_address:struct frame_info *caller_frame:caller_frame
 547 F:=:CORE_ADDR:deprecated_extract_struct_value_address:struct regcache *regcache:regcache
 548
 549 #
 550 f:=:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
 551 f:=:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
 552 f:=:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
 553 M::CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
 554 f:=:int:memory_insert_breakpoint:CORE_ADDR addr, gdb_byte *contents_cache:addr, contents_cache:0:default_memory_insert_breakpoint::0
 555 f:=:int:memory_remove_breakpoint:CORE_ADDR addr, gdb_byte *contents_cache:addr, contents_cache:0:default_memory_remove_breakpoint::0
 556 v:=:CORE_ADDR:decr_pc_after_break:::0:::0
 557
 558 # A function can be addressed by either it's "pointer" (possibly a
 559 # descriptor address) or "entry point" (first executable instruction).
 560 # The method "convert_from_func_ptr_addr" converting the former to the
 561 # latter.  DEPRECATED_FUNCTION_START_OFFSET is being used to implement
 562 # a simplified subset of that functionality - the function's address
 563 # corresponds to the "function pointer" and the function's start
 564 # corresponds to the "function entry point" - and hence is redundant.
 565
 566 v:=:CORE_ADDR:deprecated_function_start_offset:::0:::0
 567
 568 m::void:remote_translate_xfer_address:struct regcache *regcache, CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len:regcache, gdb_addr, gdb_len, rem_addr, rem_len::generic_remote_translate_xfer_address::0
 569
 570 # Fetch the target specific address used to represent a load module.
 571 F:=:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
 572 #
 573 v:=:CORE_ADDR:frame_args_skip:::0:::0
 574 M::CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
 575 M::CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
 576 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 577 # frame-base.  Enable frame-base before frame-unwind.
 578 F:=:CORE_ADDR:deprecated_saved_pc_after_call:struct frame_info *frame:frame
 579 F:=:int:frame_num_args:struct frame_info *frame:frame
 580 #
 581 # DEPRECATED_STACK_ALIGN has been replaced by an initial aligning call
 582 # to frame_align and the requirement that methods such as
 583 # push_dummy_call and frame_red_zone_size maintain correct stack/frame
 584 # alignment.
 585 F:=:CORE_ADDR:deprecated_stack_align:CORE_ADDR sp:sp
 586 M::CORE_ADDR:frame_align:CORE_ADDR address:address
 587 # DEPRECATED_REG_STRUCT_HAS_ADDR has been replaced by
 588 # stabs_argument_has_addr.
 589 F:=:int:deprecated_reg_struct_has_addr:int gcc_p, struct type *type:gcc_p, type
 590 m::int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
 591 v:=:int:frame_red_zone_size
 592 #
 593 m::CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
 594 # On some machines there are bits in addresses which are not really
 595 # part of the address, but are used by the kernel, the hardware, etc.
 596 # for special purposes.  ADDR_BITS_REMOVE takes out any such bits so
 597 # we get a "real" address such as one would find in a symbol table.
 598 # This is used only for addresses of instructions, and even then I'm
 599 # not sure it's used in all contexts.  It exists to deal with there
 600 # being a few stray bits in the PC which would mislead us, not as some
 601 # sort of generic thing to handle alignment or segmentation (it's
 602 # possible it should be in TARGET_READ_PC instead).
 603 f:=:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
 604 # It is not at all clear why SMASH_TEXT_ADDRESS is not folded into
 605 # ADDR_BITS_REMOVE.
 606 f:=:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
 607 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that indicates if
 608 # the target needs software single step.  An ISA method to implement it.
 609 #
 610 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts breakpoints
 611 # using the breakpoint system instead of blatting memory directly (as with rs6000).
 612 #
 613 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the target can
 614 # single step.  If not, then implement single step using breakpoints.
 615 F:=:void:software_single_step:enum target_signal sig, int insert_breakpoints_p:sig, insert_breakpoints_p
 616 # Return non-zero if the processor is executing a delay slot and a
 617 # further single-step is needed before the instruction finishes.
 618 M::int:single_step_through_delay:struct frame_info *frame:frame
 619 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 620 # disassembler.  Perhaps objdump can handle it?
 621 f:TARGET_PRINT_INSN:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
 622 f:=:CORE_ADDR:skip_trampoline_code:CORE_ADDR pc:pc::generic_skip_trampoline_code::0
 623
 624
 625 # If IN_SOLIB_DYNSYM_RESOLVE_CODE returns true, and SKIP_SOLIB_RESOLVER
 626 # evaluates non-zero, this is the address where the debugger will place
 627 # a step-resume breakpoint to get us past the dynamic linker.
 628 m::CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
 629 # Some systems also have trampoline code for returning from shared libs.
 630 f:=:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
 631
 632 # A target might have problems with watchpoints as soon as the stack
 633 # frame of the current function has been destroyed.  This mostly happens
 634 # as the first action in a funtion's epilogue.  in_function_epilogue_p()
 635 # is defined to return a non-zero value if either the given addr is one
 636 # instruction after the stack destroying instruction up to the trailing
 637 # return instruction or if we can figure out that the stack frame has
 638 # already been invalidated regardless of the value of addr.  Targets
 639 # which don't suffer from that problem could just let this functionality
 640 # untouched.
 641 m::int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
 642 # Given a vector of command-line arguments, return a newly allocated
 643 # string which, when passed to the create_inferior function, will be
 644 # parsed (on Unix systems, by the shell) to yield the same vector.
 645 # This function should call error() if the argument vector is not
 646 # representable for this target or if this target does not support
 647 # command-line arguments.
 648 # ARGC is the number of elements in the vector.
 649 # ARGV is an array of strings, one per argument.
 650 m::char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
 651 f:=:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
 652 f:=:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
 653 v:=:const char *:name_of_malloc:::"malloc":"malloc"::0:NAME_OF_MALLOC
 654 v:=:int:cannot_step_breakpoint:::0:0::0
 655 v:=:int:have_nonsteppable_watchpoint:::0:0::0
 656 F:=:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
 657 M::const char *:address_class_type_flags_to_name:int type_flags:type_flags
 658 M::int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
 659 # Is a register in a group
 660 m::int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
 661 # Fetch the pointer to the ith function argument.
 662 F:=:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
 663
 664 # Return the appropriate register set for a core file section with
 665 # name SECT_NAME and size SECT_SIZE.
 666 M::const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
 667 EOF
 668 }
 669
 670 #
 671 # The .log file
 672 #
 673 exec > new-gdbarch.log
 674 function_list | while do_read
 675 do
 676     cat <<EOF
 677 ${class} ${returntype} ${function} ($formal)
 678 EOF
 679     for r in ${read}
 680     do
 681         eval echo \"\ \ \ \ ${r}=\${${r}}\"
 682     done
 683     if class_is_predicate_p && fallback_default_p
 684     then
 685         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
 686         kill $$
 687         exit 1
 688     fi
 689     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
 690     then
 691         echo "Error: postdefault is useless when invalid_p=0" 1>&2
 692         kill $$
 693         exit 1
 694     fi
 695     if class_is_multiarch_p
 696     then
 697         if class_is_predicate_p ; then :
 698         elif test "x${predefault}" = "x"
 699         then
 700             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
 701             kill $$
 702             exit 1
 703         fi
 704     fi
 705     echo ""
 706 done
 707
 708 exec 1>&2
 709 compare_new gdbarch.log
 710
 711
 712 copyright ()
 713 {
 714 cat <<EOF
 715 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
 716
 717 /* Dynamic architecture support for GDB, the GNU debugger.
 718
 719    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free
 720    Software Foundation, Inc.
 721
 722    This file is part of GDB.
 723
 724    This program is free software; you can redistribute it and/or modify
 725    it under the terms of the GNU General Public License as published by
 726    the Free Software Foundation; either version 2 of the License, or
 727    (at your option) any later version.
 728
 729    This program is distributed in the hope that it will be useful,
 730    but WITHOUT ANY WARRANTY; without even the implied warranty of
 731    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 732    GNU General Public License for more details.
 733
 734    You should have received a copy of the GNU General Public License
 735    along with this program; if not, write to the Free Software
 736    Foundation, Inc., 59 Temple Place - Suite 330,
 737    Boston, MA 02111-1307, USA.  */
 738
 739 /* This file was created with the aid of \`\`gdbarch.sh''.
 740
 741    The Bourne shell script \`\`gdbarch.sh'' creates the files
 742    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
 743    against the existing \`\`gdbarch.[hc]''.  Any differences found
 744    being reported.
 745
 746    If editing this file, please also run gdbarch.sh and merge any
 747    changes into that script. Conversely, when making sweeping changes
 748    to this file, modifying gdbarch.sh and using its output may prove
 749    easier. */
 750
 751 EOF
 752 }
 753
 754 #
 755 # The .h file
 756 #
 757
 758 exec > new-gdbarch.h
 759 copyright
 760 cat <<EOF
 761 #ifndef GDBARCH_H
 762 #define GDBARCH_H
 763
 764 struct floatformat;
 765 struct ui_file;
 766 struct frame_info;
 767 struct value;
 768 struct objfile;
 769 struct minimal_symbol;
 770 struct regcache;
 771 struct reggroup;
 772 struct regset;
 773 struct disassemble_info;
 774 struct target_ops;
 775 struct obstack;
 776
 777 extern struct gdbarch *current_gdbarch;
 778 EOF
 779
 780 # function typedef's
 781 printf "\n"
 782 printf "\n"
 783 printf "/* The following are pre-initialized by GDBARCH. */\n"
 784 function_list | while do_read
 785 do
 786     if class_is_info_p
 787     then
 788         printf "\n"
 789         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 790         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
 791         if test -n "${macro}"
 792         then
 793             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 794             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 795             printf "#endif\n"
 796             printf "#if !defined (${macro})\n"
 797             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 798             printf "#endif\n"
 799         fi
 800     fi
 801 done
 802
 803 # function typedef's
 804 printf "\n"
 805 printf "\n"
 806 printf "/* The following are initialized by the target dependent code. */\n"
 807 function_list | while do_read
 808 do
 809     if [ -n "${comment}" ]
 810     then
 811         echo "${comment}" | sed \
 812             -e '2 s,#,/*,' \
 813             -e '3,$ s,#,  ,' \
 814             -e '$ s,$, */,'
 815     fi
 816
 817     if class_is_predicate_p
 818     then
 819         if test -n "${macro}"
 820         then
 821             printf "\n"
 822             printf "#if defined (${macro})\n"
 823             printf "/* Legacy for systems yet to multi-arch ${macro} */\n"
 824             printf "#if !defined (${macro}_P)\n"
 825             printf "#define ${macro}_P() (1)\n"
 826             printf "#endif\n"
 827             printf "#endif\n"
 828         fi
 829         printf "\n"
 830         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 831         if test -n "${macro}"
 832         then
 833             printf "#if !defined (GDB_TM_FILE) && defined (${macro}_P)\n"
 834             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 835             printf "#endif\n"
 836             printf "#if !defined (${macro}_P)\n"
 837             printf "#define ${macro}_P() (gdbarch_${function}_p (current_gdbarch))\n"
 838             printf "#endif\n"
 839         fi
 840     fi
 841     if class_is_variable_p
 842     then
 843         printf "\n"
 844         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 845         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
 846         if test -n "${macro}"
 847         then
 848             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 849             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 850             printf "#endif\n"
 851             printf "#if !defined (${macro})\n"
 852             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 853             printf "#endif\n"
 854         fi
 855     fi
 856     if class_is_function_p
 857     then
 858         printf "\n"
 859         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
 860         then
 861             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
 862         elif class_is_multiarch_p
 863         then
 864             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
 865         else
 866             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
 867         fi
 868         if [ "x${formal}" = "xvoid" ]
 869         then
 870           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 871         else
 872           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
 873         fi
 874         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
 875         if test -n "${macro}"
 876         then
 877             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 878             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 879             printf "#endif\n"
 880             if [ "x${actual}" = "x" ]
 881             then
 882                 d="#define ${macro}() (gdbarch_${function} (current_gdbarch))"
 883             elif [ "x${actual}" = "x-" ]
 884             then
 885                 d="#define ${macro} (gdbarch_${function} (current_gdbarch))"
 886             else
 887                 d="#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))"
 888             fi
 889             printf "#if !defined (${macro})\n"
 890             if [ "x${actual}" = "x" ]
 891             then
 892                 printf "#define ${macro}() (gdbarch_${function} (current_gdbarch))\n"
 893             elif [ "x${actual}" = "x-" ]
 894             then
 895                 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 896             else
 897                 printf "#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))\n"
 898             fi
 899             printf "#endif\n"
 900         fi
 901     fi
 902 done
 903
 904 # close it off
 905 cat <<EOF
 906
 907 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 908
 909
 910 /* Mechanism for co-ordinating the selection of a specific
 911    architecture.
 912
 913    GDB targets (*-tdep.c) can register an interest in a specific
 914    architecture.  Other GDB components can register a need to maintain
 915    per-architecture data.
 916
 917    The mechanisms below ensures that there is only a loose connection
 918    between the set-architecture command and the various GDB
 919    components.  Each component can independently register their need
 920    to maintain architecture specific data with gdbarch.
 921
 922    Pragmatics:
 923
 924    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 925    didn't scale.
 926
 927    The more traditional mega-struct containing architecture specific
 928    data for all the various GDB components was also considered.  Since
 929    GDB is built from a variable number of (fairly independent)
 930    components it was determined that the global aproach was not
 931    applicable. */
 932
 933
 934 /* Register a new architectural family with GDB.
 935
 936    Register support for the specified ARCHITECTURE with GDB.  When
 937    gdbarch determines that the specified architecture has been
 938    selected, the corresponding INIT function is called.
 939
 940    --
 941
 942    The INIT function takes two parameters: INFO which contains the
 943    information available to gdbarch about the (possibly new)
 944    architecture; ARCHES which is a list of the previously created
 945    \`\`struct gdbarch'' for this architecture.
 946
 947    The INFO parameter is, as far as possible, be pre-initialized with
 948    information obtained from INFO.ABFD or the previously selected
 949    architecture.
 950
 951    The ARCHES parameter is a linked list (sorted most recently used)
 952    of all the previously created architures for this architecture
 953    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 954    values from the previously selected architecture for this
 955    architecture family.  The global \`\`current_gdbarch'' shall not be
 956    used.
 957
 958    The INIT function shall return any of: NULL - indicating that it
 959    doesn't recognize the selected architecture; an existing \`\`struct
 960    gdbarch'' from the ARCHES list - indicating that the new
 961    architecture is just a synonym for an earlier architecture (see
 962    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
 963    - that describes the selected architecture (see gdbarch_alloc()).
 964
 965    The DUMP_TDEP function shall print out all target specific values.
 966    Care should be taken to ensure that the function works in both the
 967    multi-arch and non- multi-arch cases. */
 968
 969 struct gdbarch_list
 970 {
 971   struct gdbarch *gdbarch;
 972   struct gdbarch_list *next;
 973 };
 974
 975 struct gdbarch_info
 976 {
 977   /* Use default: NULL (ZERO). */
 978   const struct bfd_arch_info *bfd_arch_info;
 979
 980   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
 981   int byte_order;
 982
 983   /* Use default: NULL (ZERO). */
 984   bfd *abfd;
 985
 986   /* Use default: NULL (ZERO). */
 987   struct gdbarch_tdep_info *tdep_info;
 988
 989   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
 990   enum gdb_osabi osabi;
 991 };
 992
 993 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 994 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 995
 996 /* DEPRECATED - use gdbarch_register() */
 997 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 998
 999 extern void gdbarch_register (enum bfd_architecture architecture,
1000                               gdbarch_init_ftype *,
1001                               gdbarch_dump_tdep_ftype *);
1002
1003
1004 /* Return a freshly allocated, NULL terminated, array of the valid
1005    architecture names.  Since architectures are registered during the
1006    _initialize phase this function only returns useful information
1007    once initialization has been completed. */
1008
1009 extern const char **gdbarch_printable_names (void);
1010
1011
1012 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1013    matches the information provided by INFO. */
1014
1015 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches,  const struct gdbarch_info *info);
1016
1017
1018 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
1019    basic initialization using values obtained from the INFO andTDEP
1020    parameters.  set_gdbarch_*() functions are called to complete the
1021    initialization of the object. */
1022
1023 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1024
1025
1026 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1027    It is assumed that the caller freeds the \`\`struct
1028    gdbarch_tdep''. */
1029
1030 extern void gdbarch_free (struct gdbarch *);
1031
1032
1033 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1034    obstack.  The memory is freed when the corresponding architecture
1035    is also freed.  */
1036
1037 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1038 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1039 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1040
1041
1042 /* Helper function. Force an update of the current architecture.
1043
1044    The actual architecture selected is determined by INFO, \`\`(gdb) set
1045    architecture'' et.al., the existing architecture and BFD's default
1046    architecture.  INFO should be initialized to zero and then selected
1047    fields should be updated.
1048
1049    Returns non-zero if the update succeeds */
1050
1051 extern int gdbarch_update_p (struct gdbarch_info info);
1052
1053
1054 /* Helper function.  Find an architecture matching info.
1055
1056    INFO should be initialized using gdbarch_info_init, relevant fields
1057    set, and then finished using gdbarch_info_fill.
1058
1059    Returns the corresponding architecture, or NULL if no matching
1060    architecture was found.  "current_gdbarch" is not updated.  */
1061
1062 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1063
1064
1065 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
1066
1067    FIXME: kettenis/20031124: Of the functions that follow, only
1068    gdbarch_from_bfd is supposed to survive.  The others will
1069    dissappear since in the future GDB will (hopefully) be truly
1070    multi-arch.  However, for now we're still stuck with the concept of
1071    a single active architecture.  */
1072
1073 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1074
1075
1076 /* Register per-architecture data-pointer.
1077
1078    Reserve space for a per-architecture data-pointer.  An identifier
1079    for the reserved data-pointer is returned.  That identifer should
1080    be saved in a local static variable.
1081
1082    Memory for the per-architecture data shall be allocated using
1083    gdbarch_obstack_zalloc.  That memory will be deleted when the
1084    corresponding architecture object is deleted.
1085
1086    When a previously created architecture is re-selected, the
1087    per-architecture data-pointer for that previous architecture is
1088    restored.  INIT() is not re-called.
1089
1090    Multiple registrarants for any architecture are allowed (and
1091    strongly encouraged).  */
1092
1093 struct gdbarch_data;
1094
1095 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1096 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1097 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1098 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1099 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1100                                          struct gdbarch_data *data,
1101                                          void *pointer);
1102
1103 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1104
1105
1106
1107 /* Register per-architecture memory region.
1108
1109    Provide a memory-region swap mechanism.  Per-architecture memory
1110    region are created.  These memory regions are swapped whenever the
1111    architecture is changed.  For a new architecture, the memory region
1112    is initialized with zero (0) and the INIT function is called.
1113
1114    Memory regions are swapped / initialized in the order that they are
1115    registered.  NULL DATA and/or INIT values can be specified.
1116
1117    New code should use gdbarch_data_register_*(). */
1118
1119 typedef void (gdbarch_swap_ftype) (void);
1120 extern void deprecated_register_gdbarch_swap (void *data, unsigned long size, gdbarch_swap_ftype *init);
1121 #define DEPRECATED_REGISTER_GDBARCH_SWAP(VAR) deprecated_register_gdbarch_swap (&(VAR), sizeof ((VAR)), NULL)
1122
1123
1124
1125 /* Set the dynamic target-system-dependent parameters (architecture,
1126    byte-order, ...) using information found in the BFD */
1127
1128 extern void set_gdbarch_from_file (bfd *);
1129
1130
1131 /* Initialize the current architecture to the "first" one we find on
1132    our list.  */
1133
1134 extern void initialize_current_architecture (void);
1135
1136 /* gdbarch trace variable */
1137 extern int gdbarch_debug;
1138
1139 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1140
1141 #endif
1142 EOF
1143 exec 1>&2
1144 #../move-if-change new-gdbarch.h gdbarch.h
1145 compare_new gdbarch.h
1146
1147
1148 #
1149 # C file
1150 #
1151
1152 exec > new-gdbarch.c
1153 copyright
1154 cat <<EOF
1155
1156 #include "defs.h"
1157 #include "arch-utils.h"
1158
1159 #include "gdbcmd.h"
1160 #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
1161 #include "symcat.h"
1162
1163 #include "floatformat.h"
1164
1165 #include "gdb_assert.h"
1166 #include "gdb_string.h"
1167 #include "gdb-events.h"
1168 #include "reggroups.h"
1169 #include "osabi.h"
1170 #include "gdb_obstack.h"
1171
1172 /* Static function declarations */
1173
1174 static void alloc_gdbarch_data (struct gdbarch *);
1175
1176 /* Non-zero if we want to trace architecture code.  */
1177
1178 #ifndef GDBARCH_DEBUG
1179 #define GDBARCH_DEBUG 0
1180 #endif
1181 int gdbarch_debug = GDBARCH_DEBUG;
1182 static void
1183 show_gdbarch_debug (struct ui_file *file, int from_tty,
1184                     struct cmd_list_element *c, const char *value)
1185 {
1186   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1187 }
1188
1189 static const char *
1190 pformat (const struct floatformat *format)
1191 {
1192   if (format == NULL)
1193     return "(null)";
1194   else
1195     return  format->name;
1196 }
1197
1198 EOF
1199
1200 # gdbarch open the gdbarch object
1201 printf "\n"
1202 printf "/* Maintain the struct gdbarch object */\n"
1203 printf "\n"
1204 printf "struct gdbarch\n"
1205 printf "{\n"
1206 printf "  /* Has this architecture been fully initialized?  */\n"
1207 printf "  int initialized_p;\n"
1208 printf "\n"
1209 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1210 printf "  struct obstack *obstack;\n"
1211 printf "\n"
1212 printf "  /* basic architectural information */\n"
1213 function_list | while do_read
1214 do
1215     if class_is_info_p
1216     then
1217         printf "  ${returntype} ${function};\n"
1218     fi
1219 done
1220 printf "\n"
1221 printf "  /* target specific vector. */\n"
1222 printf "  struct gdbarch_tdep *tdep;\n"
1223 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1224 printf "\n"
1225 printf "  /* per-architecture data-pointers */\n"
1226 printf "  unsigned nr_data;\n"
1227 printf "  void **data;\n"
1228 printf "\n"
1229 printf "  /* per-architecture swap-regions */\n"
1230 printf "  struct gdbarch_swap *swap;\n"
1231 printf "\n"
1232 cat <<EOF
1233   /* Multi-arch values.
1234
1235      When extending this structure you must:
1236
1237      Add the field below.
1238
1239      Declare set/get functions and define the corresponding
1240      macro in gdbarch.h.
1241
1242      gdbarch_alloc(): If zero/NULL is not a suitable default,
1243      initialize the new field.
1244
1245      verify_gdbarch(): Confirm that the target updated the field
1246      correctly.
1247
1248      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1249      field is dumped out
1250
1251      \`\`startup_gdbarch()'': Append an initial value to the static
1252      variable (base values on the host's c-type system).
1253
1254      get_gdbarch(): Implement the set/get functions (probably using
1255      the macro's as shortcuts).
1256
1257      */
1258
1259 EOF
1260 function_list | while do_read
1261 do
1262     if class_is_variable_p
1263     then
1264         printf "  ${returntype} ${function};\n"
1265     elif class_is_function_p
1266     then
1267         printf "  gdbarch_${function}_ftype *${function};\n"
1268     fi
1269 done
1270 printf "};\n"
1271
1272 # A pre-initialized vector
1273 printf "\n"
1274 printf "\n"
1275 cat <<EOF
1276 /* The default architecture uses host values (for want of a better
1277    choice). */
1278 EOF
1279 printf "\n"
1280 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1281 printf "\n"
1282 printf "struct gdbarch startup_gdbarch =\n"
1283 printf "{\n"
1284 printf "  1, /* Always initialized.  */\n"
1285 printf "  NULL, /* The obstack.  */\n"
1286 printf "  /* basic architecture information */\n"
1287 function_list | while do_read
1288 do
1289     if class_is_info_p
1290     then
1291         printf "  ${staticdefault},  /* ${function} */\n"
1292     fi
1293 done
1294 cat <<EOF
1295   /* target specific vector and its dump routine */
1296   NULL, NULL,
1297   /*per-architecture data-pointers and swap regions */
1298   0, NULL, NULL,
1299   /* Multi-arch values */
1300 EOF
1301 function_list | while do_read
1302 do
1303     if class_is_function_p || class_is_variable_p
1304     then
1305         printf "  ${staticdefault},  /* ${function} */\n"
1306     fi
1307 done
1308 cat <<EOF
1309   /* startup_gdbarch() */
1310 };
1311
1312 struct gdbarch *current_gdbarch = &startup_gdbarch;
1313 EOF
1314
1315 # Create a new gdbarch struct
1316 cat <<EOF
1317
1318 /* Create a new \`\`struct gdbarch'' based on information provided by
1319    \`\`struct gdbarch_info''. */
1320 EOF
1321 printf "\n"
1322 cat <<EOF
1323 struct gdbarch *
1324 gdbarch_alloc (const struct gdbarch_info *info,
1325                struct gdbarch_tdep *tdep)
1326 {
1327   /* NOTE: The new architecture variable is named \`\`current_gdbarch''
1328      so that macros such as TARGET_DOUBLE_BIT, when expanded, refer to
1329      the current local architecture and not the previous global
1330      architecture.  This ensures that the new architectures initial
1331      values are not influenced by the previous architecture.  Once
1332      everything is parameterised with gdbarch, this will go away.  */
1333   struct gdbarch *current_gdbarch;
1334
1335   /* Create an obstack for allocating all the per-architecture memory,
1336      then use that to allocate the architecture vector.  */
1337   struct obstack *obstack = XMALLOC (struct obstack);
1338   obstack_init (obstack);
1339   current_gdbarch = obstack_alloc (obstack, sizeof (*current_gdbarch));
1340   memset (current_gdbarch, 0, sizeof (*current_gdbarch));
1341   current_gdbarch->obstack = obstack;
1342
1343   alloc_gdbarch_data (current_gdbarch);
1344
1345   current_gdbarch->tdep = tdep;
1346 EOF
1347 printf "\n"
1348 function_list | while do_read
1349 do
1350     if class_is_info_p
1351     then
1352         printf "  current_gdbarch->${function} = info->${function};\n"
1353     fi
1354 done
1355 printf "\n"
1356 printf "  /* Force the explicit initialization of these. */\n"
1357 function_list | while do_read
1358 do
1359     if class_is_function_p || class_is_variable_p
1360     then
1361         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1362         then
1363           printf "  current_gdbarch->${function} = ${predefault};\n"
1364         fi
1365     fi
1366 done
1367 cat <<EOF
1368   /* gdbarch_alloc() */
1369
1370   return current_gdbarch;
1371 }
1372 EOF
1373
1374 # Free a gdbarch struct.
1375 printf "\n"
1376 printf "\n"
1377 cat <<EOF
1378 /* Allocate extra space using the per-architecture obstack.  */
1379
1380 void *
1381 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1382 {
1383   void *data = obstack_alloc (arch->obstack, size);
1384   memset (data, 0, size);
1385   return data;
1386 }
1387
1388
1389 /* Free a gdbarch struct.  This should never happen in normal
1390    operation --- once you've created a gdbarch, you keep it around.
1391    However, if an architecture's init function encounters an error
1392    building the structure, it may need to clean up a partially
1393    constructed gdbarch.  */
1394
1395 void
1396 gdbarch_free (struct gdbarch *arch)
1397 {
1398   struct obstack *obstack;
1399   gdb_assert (arch != NULL);
1400   gdb_assert (!arch->initialized_p);
1401   obstack = arch->obstack;
1402   obstack_free (obstack, 0); /* Includes the ARCH.  */
1403   xfree (obstack);
1404 }
1405 EOF
1406
1407 # verify a new architecture
1408 cat <<EOF
1409
1410
1411 /* Ensure that all values in a GDBARCH are reasonable.  */
1412
1413 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1414    just happens to match the global variable \`\`current_gdbarch''.  That
1415    way macros refering to that variable get the local and not the global
1416    version - ulgh.  Once everything is parameterised with gdbarch, this
1417    will go away. */
1418
1419 static void
1420 verify_gdbarch (struct gdbarch *current_gdbarch)
1421 {
1422   struct ui_file *log;
1423   struct cleanup *cleanups;
1424   long dummy;
1425   char *buf;
1426   log = mem_fileopen ();
1427   cleanups = make_cleanup_ui_file_delete (log);
1428   /* fundamental */
1429   if (current_gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1430     fprintf_unfiltered (log, "\n\tbyte-order");
1431   if (current_gdbarch->bfd_arch_info == NULL)
1432     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1433   /* Check those that need to be defined for the given multi-arch level. */
1434 EOF
1435 function_list | while do_read
1436 do
1437     if class_is_function_p || class_is_variable_p
1438     then
1439         if [ "x${invalid_p}" = "x0" ]
1440         then
1441             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1442         elif class_is_predicate_p
1443         then
1444             printf "  /* Skip verify of ${function}, has predicate */\n"
1445         # FIXME: See do_read for potential simplification
1446         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1447         then
1448             printf "  if (${invalid_p})\n"
1449             printf "    current_gdbarch->${function} = ${postdefault};\n"
1450         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1451         then
1452             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1453             printf "    current_gdbarch->${function} = ${postdefault};\n"
1454         elif [ -n "${postdefault}" ]
1455         then
1456             printf "  if (current_gdbarch->${function} == 0)\n"
1457             printf "    current_gdbarch->${function} = ${postdefault};\n"
1458         elif [ -n "${invalid_p}" ]
1459         then
1460             printf "  if (${invalid_p})\n"
1461             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1462         elif [ -n "${predefault}" ]
1463         then
1464             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1465             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1466         fi
1467     fi
1468 done
1469 cat <<EOF
1470   buf = ui_file_xstrdup (log, &dummy);
1471   make_cleanup (xfree, buf);
1472   if (strlen (buf) > 0)
1473     internal_error (__FILE__, __LINE__,
1474                     _("verify_gdbarch: the following are invalid ...%s"),
1475                     buf);
1476   do_cleanups (cleanups);
1477 }
1478 EOF
1479
1480 # dump the structure
1481 printf "\n"
1482 printf "\n"
1483 cat <<EOF
1484 /* Print out the details of the current architecture. */
1485
1486 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1487    just happens to match the global variable \`\`current_gdbarch''.  That
1488    way macros refering to that variable get the local and not the global
1489    version - ulgh.  Once everything is parameterised with gdbarch, this
1490    will go away. */
1491
1492 void
1493 gdbarch_dump (struct gdbarch *current_gdbarch, struct ui_file *file)
1494 {
1495   const char *gdb_xm_file = "<not-defined>";
1496   const char *gdb_nm_file = "<not-defined>";
1497   const char *gdb_tm_file = "<not-defined>";
1498 #if defined (GDB_XM_FILE)
1499   gdb_xm_file = GDB_XM_FILE;
1500 #endif
1501   fprintf_unfiltered (file,
1502                       "gdbarch_dump: GDB_XM_FILE = %s\\n",
1503                       gdb_xm_file);
1504 #if defined (GDB_NM_FILE)
1505   gdb_nm_file = GDB_NM_FILE;
1506 #endif
1507   fprintf_unfiltered (file,
1508                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1509                       gdb_nm_file);
1510 #if defined (GDB_TM_FILE)
1511   gdb_tm_file = GDB_TM_FILE;
1512 #endif
1513   fprintf_unfiltered (file,
1514                       "gdbarch_dump: GDB_TM_FILE = %s\\n",
1515                       gdb_tm_file);
1516 EOF
1517 function_list | sort -t: -k 4 | while do_read
1518 do
1519     # First the predicate
1520     if class_is_predicate_p
1521     then
1522         if test -n "${macro}"
1523         then
1524             printf "#ifdef ${macro}_P\n"
1525             printf "  fprintf_unfiltered (file,\n"
1526             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1527             printf "                      \"${macro}_P()\",\n"
1528             printf "                      XSTRING (${macro}_P ()));\n"
1529             printf "#endif\n"
1530         fi
1531         printf "  fprintf_unfiltered (file,\n"
1532         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1533         printf "                      gdbarch_${function}_p (current_gdbarch));\n"
1534     fi
1535     # Print the macro definition.
1536     if test -n "${macro}"
1537     then
1538         printf "#ifdef ${macro}\n"
1539         if class_is_function_p
1540         then
1541             printf "  fprintf_unfiltered (file,\n"
1542             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1543             printf "                      \"${macro}(${actual})\",\n"
1544             printf "                      XSTRING (${macro} (${actual})));\n"
1545         else
1546             printf "  fprintf_unfiltered (file,\n"
1547             printf "                      \"gdbarch_dump: ${macro} # %%s\\\\n\",\n"
1548             printf "                      XSTRING (${macro}));\n"
1549         fi
1550         printf "#endif\n"
1551     fi
1552     # Print the corresponding value.
1553     if class_is_function_p
1554     then
1555         printf "  fprintf_unfiltered (file,\n"
1556         printf "                      \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1557         printf "                      (long) current_gdbarch->${function});\n"
1558     else
1559         # It is a variable
1560         case "${print}:${returntype}" in
1561             :CORE_ADDR )
1562                 fmt="0x%s"
1563                 print="paddr_nz (current_gdbarch->${function})"
1564                 ;;
1565             :* )
1566                 fmt="%s"
1567                 print="paddr_d (current_gdbarch->${function})"
1568                 ;;
1569             * )
1570                 fmt="%s"
1571                 ;;
1572         esac
1573         printf "  fprintf_unfiltered (file,\n"
1574         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1575         printf "                      ${print});\n"
1576     fi
1577 done
1578 cat <<EOF
1579   if (current_gdbarch->dump_tdep != NULL)
1580     current_gdbarch->dump_tdep (current_gdbarch, file);
1581 }
1582 EOF
1583
1584
1585 # GET/SET
1586 printf "\n"
1587 cat <<EOF
1588 struct gdbarch_tdep *
1589 gdbarch_tdep (struct gdbarch *gdbarch)
1590 {
1591   if (gdbarch_debug >= 2)
1592     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1593   return gdbarch->tdep;
1594 }
1595 EOF
1596 printf "\n"
1597 function_list | while do_read
1598 do
1599     if class_is_predicate_p
1600     then
1601         printf "\n"
1602         printf "int\n"
1603         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1604         printf "{\n"
1605         printf "  gdb_assert (gdbarch != NULL);\n"
1606         printf "  return ${predicate};\n"
1607         printf "}\n"
1608     fi
1609     if class_is_function_p
1610     then
1611         printf "\n"
1612         printf "${returntype}\n"
1613         if [ "x${formal}" = "xvoid" ]
1614         then
1615           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1616         else
1617           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1618         fi
1619         printf "{\n"
1620         printf "  gdb_assert (gdbarch != NULL);\n"
1621         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1622         if class_is_predicate_p && test -n "${predefault}"
1623         then
1624             # Allow a call to a function with a predicate.
1625             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1626         fi
1627         printf "  if (gdbarch_debug >= 2)\n"
1628         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1629         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1630         then
1631             if class_is_multiarch_p
1632             then
1633                 params="gdbarch"
1634             else
1635                 params=""
1636             fi
1637         else
1638             if class_is_multiarch_p
1639             then
1640                 params="gdbarch, ${actual}"
1641             else
1642                 params="${actual}"
1643             fi
1644         fi
1645         if [ "x${returntype}" = "xvoid" ]
1646         then
1647           printf "  gdbarch->${function} (${params});\n"
1648         else
1649           printf "  return gdbarch->${function} (${params});\n"
1650         fi
1651         printf "}\n"
1652         printf "\n"
1653         printf "void\n"
1654         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1655         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1656         printf "{\n"
1657         printf "  gdbarch->${function} = ${function};\n"
1658         printf "}\n"
1659     elif class_is_variable_p
1660     then
1661         printf "\n"
1662         printf "${returntype}\n"
1663         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1664         printf "{\n"
1665         printf "  gdb_assert (gdbarch != NULL);\n"
1666         if [ "x${invalid_p}" = "x0" ]
1667         then
1668             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1669         elif [ -n "${invalid_p}" ]
1670         then
1671             printf "  /* Check variable is valid.  */\n"
1672             printf "  gdb_assert (!(${invalid_p}));\n"
1673         elif [ -n "${predefault}" ]
1674         then
1675             printf "  /* Check variable changed from pre-default.  */\n"
1676             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1677         fi
1678         printf "  if (gdbarch_debug >= 2)\n"
1679         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1680         printf "  return gdbarch->${function};\n"
1681         printf "}\n"
1682         printf "\n"
1683         printf "void\n"
1684         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1685         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1686         printf "{\n"
1687         printf "  gdbarch->${function} = ${function};\n"
1688         printf "}\n"
1689     elif class_is_info_p
1690     then
1691         printf "\n"
1692         printf "${returntype}\n"
1693         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1694         printf "{\n"
1695         printf "  gdb_assert (gdbarch != NULL);\n"
1696         printf "  if (gdbarch_debug >= 2)\n"
1697         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1698         printf "  return gdbarch->${function};\n"
1699         printf "}\n"
1700     fi
1701 done
1702
1703 # All the trailing guff
1704 cat <<EOF
1705
1706
1707 /* Keep a registry of per-architecture data-pointers required by GDB
1708    modules. */
1709
1710 struct gdbarch_data
1711 {
1712   unsigned index;
1713   int init_p;
1714   gdbarch_data_pre_init_ftype *pre_init;
1715   gdbarch_data_post_init_ftype *post_init;
1716 };
1717
1718 struct gdbarch_data_registration
1719 {
1720   struct gdbarch_data *data;
1721   struct gdbarch_data_registration *next;
1722 };
1723
1724 struct gdbarch_data_registry
1725 {
1726   unsigned nr;
1727   struct gdbarch_data_registration *registrations;
1728 };
1729
1730 struct gdbarch_data_registry gdbarch_data_registry =
1731 {
1732   0, NULL,
1733 };
1734
1735 static struct gdbarch_data *
1736 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1737                        gdbarch_data_post_init_ftype *post_init)
1738 {
1739   struct gdbarch_data_registration **curr;
1740   /* Append the new registraration.  */
1741   for (curr = &gdbarch_data_registry.registrations;
1742        (*curr) != NULL;
1743        curr = &(*curr)->next);
1744   (*curr) = XMALLOC (struct gdbarch_data_registration);
1745   (*curr)->next = NULL;
1746   (*curr)->data = XMALLOC (struct gdbarch_data);
1747   (*curr)->data->index = gdbarch_data_registry.nr++;
1748   (*curr)->data->pre_init = pre_init;
1749   (*curr)->data->post_init = post_init;
1750   (*curr)->data->init_p = 1;
1751   return (*curr)->data;
1752 }
1753
1754 struct gdbarch_data *
1755 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1756 {
1757   return gdbarch_data_register (pre_init, NULL);
1758 }
1759
1760 struct gdbarch_data *
1761 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1762 {
1763   return gdbarch_data_register (NULL, post_init);
1764 }
1765
1766 /* Create/delete the gdbarch data vector. */
1767
1768 static void
1769 alloc_gdbarch_data (struct gdbarch *gdbarch)
1770 {
1771   gdb_assert (gdbarch->data == NULL);
1772   gdbarch->nr_data = gdbarch_data_registry.nr;
1773   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1774 }
1775
1776 /* Initialize the current value of the specified per-architecture
1777    data-pointer. */
1778
1779 void
1780 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1781                              struct gdbarch_data *data,
1782                              void *pointer)
1783 {
1784   gdb_assert (data->index < gdbarch->nr_data);
1785   gdb_assert (gdbarch->data[data->index] == NULL);
1786   gdb_assert (data->pre_init == NULL);
1787   gdbarch->data[data->index] = pointer;
1788 }
1789
1790 /* Return the current value of the specified per-architecture
1791    data-pointer. */
1792
1793 void *
1794 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1795 {
1796   gdb_assert (data->index < gdbarch->nr_data);
1797   if (gdbarch->data[data->index] == NULL)
1798     {
1799       /* The data-pointer isn't initialized, call init() to get a
1800          value.  */
1801       if (data->pre_init != NULL)
1802         /* Mid architecture creation: pass just the obstack, and not
1803            the entire architecture, as that way it isn't possible for
1804            pre-init code to refer to undefined architecture
1805            fields.  */
1806         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1807       else if (gdbarch->initialized_p
1808                && data->post_init != NULL)
1809         /* Post architecture creation: pass the entire architecture
1810            (as all fields are valid), but be careful to also detect
1811            recursive references.  */
1812         {
1813           gdb_assert (data->init_p);
1814           data->init_p = 0;
1815           gdbarch->data[data->index] = data->post_init (gdbarch);
1816           data->init_p = 1;
1817         }
1818       else
1819         /* The architecture initialization hasn't completed - punt -
1820          hope that the caller knows what they are doing.  Once
1821          deprecated_set_gdbarch_data has been initialized, this can be
1822          changed to an internal error.  */
1823         return NULL;
1824       gdb_assert (gdbarch->data[data->index] != NULL);
1825     }
1826   return gdbarch->data[data->index];
1827 }
1828
1829
1830
1831 /* Keep a registry of swapped data required by GDB modules. */
1832
1833 struct gdbarch_swap
1834 {
1835   void *swap;
1836   struct gdbarch_swap_registration *source;
1837   struct gdbarch_swap *next;
1838 };
1839
1840 struct gdbarch_swap_registration
1841 {
1842   void *data;
1843   unsigned long sizeof_data;
1844   gdbarch_swap_ftype *init;
1845   struct gdbarch_swap_registration *next;
1846 };
1847
1848 struct gdbarch_swap_registry
1849 {
1850   int nr;
1851   struct gdbarch_swap_registration *registrations;
1852 };
1853
1854 struct gdbarch_swap_registry gdbarch_swap_registry =
1855 {
1856   0, NULL,
1857 };
1858
1859 void
1860 deprecated_register_gdbarch_swap (void *data,
1861                                   unsigned long sizeof_data,
1862                                   gdbarch_swap_ftype *init)
1863 {
1864   struct gdbarch_swap_registration **rego;
1865   for (rego = &gdbarch_swap_registry.registrations;
1866        (*rego) != NULL;
1867        rego = &(*rego)->next);
1868   (*rego) = XMALLOC (struct gdbarch_swap_registration);
1869   (*rego)->next = NULL;
1870   (*rego)->init = init;
1871   (*rego)->data = data;
1872   (*rego)->sizeof_data = sizeof_data;
1873 }
1874
1875 static void
1876 current_gdbarch_swap_init_hack (void)
1877 {
1878   struct gdbarch_swap_registration *rego;
1879   struct gdbarch_swap **curr = &current_gdbarch->swap;
1880   for (rego = gdbarch_swap_registry.registrations;
1881        rego != NULL;
1882        rego = rego->next)
1883     {
1884       if (rego->data != NULL)
1885         {
1886           (*curr) = GDBARCH_OBSTACK_ZALLOC (current_gdbarch,
1887                                             struct gdbarch_swap);
1888           (*curr)->source = rego;
1889           (*curr)->swap = gdbarch_obstack_zalloc (current_gdbarch,
1890                                                   rego->sizeof_data);
1891           (*curr)->next = NULL;
1892           curr = &(*curr)->next;
1893         }
1894       if (rego->init != NULL)
1895         rego->init ();
1896     }
1897 }
1898
1899 static struct gdbarch *
1900 current_gdbarch_swap_out_hack (void)
1901 {
1902   struct gdbarch *old_gdbarch = current_gdbarch;
1903   struct gdbarch_swap *curr;
1904
1905   gdb_assert (old_gdbarch != NULL);
1906   for (curr = old_gdbarch->swap;
1907        curr != NULL;
1908        curr = curr->next)
1909     {
1910       memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
1911       memset (curr->source->data, 0, curr->source->sizeof_data);
1912     }
1913   current_gdbarch = NULL;
1914   return old_gdbarch;
1915 }
1916
1917 static void
1918 current_gdbarch_swap_in_hack (struct gdbarch *new_gdbarch)
1919 {
1920   struct gdbarch_swap *curr;
1921
1922   gdb_assert (current_gdbarch == NULL);
1923   for (curr = new_gdbarch->swap;
1924        curr != NULL;
1925        curr = curr->next)
1926     memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
1927   current_gdbarch = new_gdbarch;
1928 }
1929
1930
1931 /* Keep a registry of the architectures known by GDB. */
1932
1933 struct gdbarch_registration
1934 {
1935   enum bfd_architecture bfd_architecture;
1936   gdbarch_init_ftype *init;
1937   gdbarch_dump_tdep_ftype *dump_tdep;
1938   struct gdbarch_list *arches;
1939   struct gdbarch_registration *next;
1940 };
1941
1942 static struct gdbarch_registration *gdbarch_registry = NULL;
1943
1944 static void
1945 append_name (const char ***buf, int *nr, const char *name)
1946 {
1947   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1948   (*buf)[*nr] = name;
1949   *nr += 1;
1950 }
1951
1952 const char **
1953 gdbarch_printable_names (void)
1954 {
1955   /* Accumulate a list of names based on the registed list of
1956      architectures. */
1957   enum bfd_architecture a;
1958   int nr_arches = 0;
1959   const char **arches = NULL;
1960   struct gdbarch_registration *rego;
1961   for (rego = gdbarch_registry;
1962        rego != NULL;
1963        rego = rego->next)
1964     {
1965       const struct bfd_arch_info *ap;
1966       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1967       if (ap == NULL)
1968         internal_error (__FILE__, __LINE__,
1969                         _("gdbarch_architecture_names: multi-arch unknown"));
1970       do
1971         {
1972           append_name (&arches, &nr_arches, ap->printable_name);
1973           ap = ap->next;
1974         }
1975       while (ap != NULL);
1976     }
1977   append_name (&arches, &nr_arches, NULL);
1978   return arches;
1979 }
1980
1981
1982 void
1983 gdbarch_register (enum bfd_architecture bfd_architecture,
1984                   gdbarch_init_ftype *init,
1985                   gdbarch_dump_tdep_ftype *dump_tdep)
1986 {
1987   struct gdbarch_registration **curr;
1988   const struct bfd_arch_info *bfd_arch_info;
1989   /* Check that BFD recognizes this architecture */
1990   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1991   if (bfd_arch_info == NULL)
1992     {
1993       internal_error (__FILE__, __LINE__,
1994                       _("gdbarch: Attempt to register unknown architecture (%d)"),
1995                       bfd_architecture);
1996     }
1997   /* Check that we haven't seen this architecture before */
1998   for (curr = &gdbarch_registry;
1999        (*curr) != NULL;
2000        curr = &(*curr)->next)
2001     {
2002       if (bfd_architecture == (*curr)->bfd_architecture)
2003         internal_error (__FILE__, __LINE__,
2004                         _("gdbarch: Duplicate registraration of architecture (%s)"),
2005                         bfd_arch_info->printable_name);
2006     }
2007   /* log it */
2008   if (gdbarch_debug)
2009     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
2010                         bfd_arch_info->printable_name,
2011                         (long) init);
2012   /* Append it */
2013   (*curr) = XMALLOC (struct gdbarch_registration);
2014   (*curr)->bfd_architecture = bfd_architecture;
2015   (*curr)->init = init;
2016   (*curr)->dump_tdep = dump_tdep;
2017   (*curr)->arches = NULL;
2018   (*curr)->next = NULL;
2019 }
2020
2021 void
2022 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2023                        gdbarch_init_ftype *init)
2024 {
2025   gdbarch_register (bfd_architecture, init, NULL);
2026 }
2027
2028
2029 /* Look for an architecture using gdbarch_info.  Base search on only
2030    BFD_ARCH_INFO and BYTE_ORDER. */
2031
2032 struct gdbarch_list *
2033 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2034                              const struct gdbarch_info *info)
2035 {
2036   for (; arches != NULL; arches = arches->next)
2037     {
2038       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2039         continue;
2040       if (info->byte_order != arches->gdbarch->byte_order)
2041         continue;
2042       if (info->osabi != arches->gdbarch->osabi)
2043         continue;
2044       return arches;
2045     }
2046   return NULL;
2047 }
2048
2049
2050 /* Find an architecture that matches the specified INFO.  Create a new
2051    architecture if needed.  Return that new architecture.  Assumes
2052    that there is no current architecture.  */
2053
2054 static struct gdbarch *
2055 find_arch_by_info (struct gdbarch *old_gdbarch, struct gdbarch_info info)
2056 {
2057   struct gdbarch *new_gdbarch;
2058   struct gdbarch_registration *rego;
2059
2060   /* The existing architecture has been swapped out - all this code
2061      works from a clean slate.  */
2062   gdb_assert (current_gdbarch == NULL);
2063
2064   /* Fill in missing parts of the INFO struct using a number of
2065      sources: "set ..."; INFOabfd supplied; and the existing
2066      architecture.  */
2067   gdbarch_info_fill (old_gdbarch, &info);
2068
2069   /* Must have found some sort of architecture. */
2070   gdb_assert (info.bfd_arch_info != NULL);
2071
2072   if (gdbarch_debug)
2073     {
2074       fprintf_unfiltered (gdb_stdlog,
2075                           "find_arch_by_info: info.bfd_arch_info %s\n",
2076                           (info.bfd_arch_info != NULL
2077                            ? info.bfd_arch_info->printable_name
2078                            : "(null)"));
2079       fprintf_unfiltered (gdb_stdlog,
2080                           "find_arch_by_info: info.byte_order %d (%s)\n",
2081                           info.byte_order,
2082                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
2083                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2084                            : "default"));
2085       fprintf_unfiltered (gdb_stdlog,
2086                           "find_arch_by_info: info.osabi %d (%s)\n",
2087                           info.osabi, gdbarch_osabi_name (info.osabi));
2088       fprintf_unfiltered (gdb_stdlog,
2089                           "find_arch_by_info: info.abfd 0x%lx\n",
2090                           (long) info.abfd);
2091       fprintf_unfiltered (gdb_stdlog,
2092                           "find_arch_by_info: info.tdep_info 0x%lx\n",
2093                           (long) info.tdep_info);
2094     }
2095
2096   /* Find the tdep code that knows about this architecture.  */
2097   for (rego = gdbarch_registry;
2098        rego != NULL;
2099        rego = rego->next)
2100     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2101       break;
2102   if (rego == NULL)
2103     {
2104       if (gdbarch_debug)
2105         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2106                             "No matching architecture\n");
2107       return 0;
2108     }
2109
2110   /* Ask the tdep code for an architecture that matches "info".  */
2111   new_gdbarch = rego->init (info, rego->arches);
2112
2113   /* Did the tdep code like it?  No.  Reject the change and revert to
2114      the old architecture.  */
2115   if (new_gdbarch == NULL)
2116     {
2117       if (gdbarch_debug)
2118         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2119                             "Target rejected architecture\n");
2120       return NULL;
2121     }
2122
2123   /* Is this a pre-existing architecture (as determined by already
2124      being initialized)?  Move it to the front of the architecture
2125      list (keeping the list sorted Most Recently Used).  */
2126   if (new_gdbarch->initialized_p)
2127     {
2128       struct gdbarch_list **list;
2129       struct gdbarch_list *this;
2130       if (gdbarch_debug)
2131         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2132                             "Previous architecture 0x%08lx (%s) selected\n",
2133                             (long) new_gdbarch,
2134                             new_gdbarch->bfd_arch_info->printable_name);
2135       /* Find the existing arch in the list.  */
2136       for (list = &rego->arches;
2137            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2138            list = &(*list)->next);
2139       /* It had better be in the list of architectures.  */
2140       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2141       /* Unlink THIS.  */
2142       this = (*list);
2143       (*list) = this->next;
2144       /* Insert THIS at the front.  */
2145       this->next = rego->arches;
2146       rego->arches = this;
2147       /* Return it.  */
2148       return new_gdbarch;
2149     }
2150
2151   /* It's a new architecture.  */
2152   if (gdbarch_debug)
2153     fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2154                         "New architecture 0x%08lx (%s) selected\n",
2155                         (long) new_gdbarch,
2156                         new_gdbarch->bfd_arch_info->printable_name);
2157
2158   /* Insert the new architecture into the front of the architecture
2159      list (keep the list sorted Most Recently Used).  */
2160   {
2161     struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2162     this->next = rego->arches;
2163     this->gdbarch = new_gdbarch;
2164     rego->arches = this;
2165   }
2166
2167   /* Check that the newly installed architecture is valid.  Plug in
2168      any post init values.  */
2169   new_gdbarch->dump_tdep = rego->dump_tdep;
2170   verify_gdbarch (new_gdbarch);
2171   new_gdbarch->initialized_p = 1;
2172
2173   /* Initialize any per-architecture swap areas.  This phase requires
2174      a valid global CURRENT_GDBARCH.  Set it momentarially, and then
2175      swap the entire architecture out.  */
2176   current_gdbarch = new_gdbarch;
2177   current_gdbarch_swap_init_hack ();
2178   current_gdbarch_swap_out_hack ();
2179
2180   if (gdbarch_debug)
2181     gdbarch_dump (new_gdbarch, gdb_stdlog);
2182
2183   return new_gdbarch;
2184 }
2185
2186 struct gdbarch *
2187 gdbarch_find_by_info (struct gdbarch_info info)
2188 {
2189   /* Save the previously selected architecture, setting the global to
2190      NULL.  This stops things like gdbarch->init() trying to use the
2191      previous architecture's configuration.  The previous architecture
2192      may not even be of the same architecture family.  The most recent
2193      architecture of the same family is found at the head of the
2194      rego->arches list.  */
2195   struct gdbarch *old_gdbarch = current_gdbarch_swap_out_hack ();
2196
2197   /* Find the specified architecture.  */
2198   struct gdbarch *new_gdbarch = find_arch_by_info (old_gdbarch, info);
2199
2200   /* Restore the existing architecture.  */
2201   gdb_assert (current_gdbarch == NULL);
2202   current_gdbarch_swap_in_hack (old_gdbarch);
2203
2204   return new_gdbarch;
2205 }
2206
2207 /* Make the specified architecture current, swapping the existing one
2208    out.  */
2209
2210 void
2211 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2212 {
2213   gdb_assert (new_gdbarch != NULL);
2214   gdb_assert (current_gdbarch != NULL);
2215   gdb_assert (new_gdbarch->initialized_p);
2216   current_gdbarch_swap_out_hack ();
2217   current_gdbarch_swap_in_hack (new_gdbarch);
2218   architecture_changed_event ();
2219   flush_cached_frames ();
2220 }
2221
2222 extern void _initialize_gdbarch (void);
2223
2224 void
2225 _initialize_gdbarch (void)
2226 {
2227   struct cmd_list_element *c;
2228
2229   add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2230 Set architecture debugging."), _("\\
2231 Show architecture debugging."), _("\\
2232 When non-zero, architecture debugging is enabled."),
2233                             NULL,
2234                             show_gdbarch_debug,
2235                             &setdebuglist, &showdebuglist);
2236 }
2237 EOF
2238
2239 # close things off
2240 exec 1>&2
2241 #../move-if-change new-gdbarch.c gdbarch.c
2242 compare_new gdbarch.c