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 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., 51 Franklin Street, Fifth Floor,
  23 # Boston, MA 02110-1301, USA.
  24
  25 # Make certain that the script is not running in an internationalized
  26 # environment.
  27 LANG=c ; export LANG
  28 LC_ALL=c ; export LC_ALL
  29
  30
  31 compare_new ()
  32 {
  33     file=$1
  34     if test ! -r ${file}
  35     then
  36         echo "${file} missing? cp new-${file} ${file}" 1>&2
  37     elif diff -u ${file} new-${file}
  38     then
  39         echo "${file} unchanged" 1>&2
  40     else
  41         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  42     fi
  43 }
  44
  45
  46 # Format of the input table
  47 read="class macro returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
  48
  49 do_read ()
  50 {
  51     comment=""
  52     class=""
  53     while read line
  54     do
  55         if test "${line}" = ""
  56         then
  57             continue
  58         elif test "${line}" = "#" -a "${comment}" = ""
  59         then
  60             continue
  61         elif expr "${line}" : "#" > /dev/null
  62         then
  63             comment="${comment}
  64 ${line}"
  65         else
  66
  67             # The semantics of IFS varies between different SH's.  Some
  68             # treat ``::' as three fields while some treat it as just too.
  69             # Work around this by eliminating ``::'' ....
  70             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  71
  72             OFS="${IFS}" ; IFS="[:]"
  73             eval read ${read} <<EOF
  74 ${line}
  75 EOF
  76             IFS="${OFS}"
  77
  78             if test -n "${garbage_at_eol}"
  79             then
  80                 echo "Garbage at end-of-line in ${line}" 1>&2
  81                 kill $$
  82                 exit 1
  83             fi
  84
  85             # .... and then going back through each field and strip out those
  86             # that ended up with just that space character.
  87             for r in ${read}
  88             do
  89                 if eval test \"\${${r}}\" = \"\ \"
  90                 then
  91                     eval ${r}=""
  92                 fi
  93             done
  94
  95             FUNCTION=`echo ${function} | tr '[a-z]' '[A-Z]'`
  96             if test "x${macro}" = "x="
  97             then
  98                 # Provide a UCASE version of function (for when there isn't MACRO)
  99                 macro="${FUNCTION}"
 100             elif test "${macro}" = "${FUNCTION}"
 101             then
 102                 echo "${function}: Specify = for macro field" 1>&2
 103                 kill $$
 104                 exit 1
 105             fi
 106
 107             # Check that macro definition wasn't supplied for multi-arch
 108             case "${class}" in
 109                 [mM] )
 110                     if test "${macro}" != ""
 111                     then
 112                         echo "Error: Function ${function} multi-arch yet macro ${macro} supplied" 1>&2
 113                         kill $$
 114                         exit 1
 115                     fi
 116             esac
 117
 118             case "${class}" in
 119                 m ) staticdefault="${predefault}" ;;
 120                 M ) staticdefault="0" ;;
 121                 * ) test "${staticdefault}" || staticdefault=0 ;;
 122             esac
 123
 124             case "${class}" in
 125             F | V | M )
 126                 case "${invalid_p}" in
 127                 "" )
 128                     if test -n "${predefault}"
 129                     then
 130                         #invalid_p="gdbarch->${function} == ${predefault}"
 131                         predicate="gdbarch->${function} != ${predefault}"
 132                     elif class_is_variable_p
 133                     then
 134                         predicate="gdbarch->${function} != 0"
 135                     elif class_is_function_p
 136                     then
 137                         predicate="gdbarch->${function} != NULL"
 138                     fi
 139                     ;;
 140                 * )
 141                     echo "Predicate function ${function} with invalid_p." 1>&2
 142                     kill $$
 143                     exit 1
 144                     ;;
 145                 esac
 146             esac
 147
 148             # PREDEFAULT is a valid fallback definition of MEMBER when
 149             # multi-arch is not enabled.  This ensures that the
 150             # default value, when multi-arch is the same as the
 151             # default value when not multi-arch.  POSTDEFAULT is
 152             # always a valid definition of MEMBER as this again
 153             # ensures consistency.
 154
 155             if [ -n "${postdefault}" ]
 156             then
 157                 fallbackdefault="${postdefault}"
 158             elif [ -n "${predefault}" ]
 159             then
 160                 fallbackdefault="${predefault}"
 161             else
 162                 fallbackdefault="0"
 163             fi
 164
 165             #NOT YET: See gdbarch.log for basic verification of
 166             # database
 167
 168             break
 169         fi
 170     done
 171     if [ -n "${class}" ]
 172     then
 173         true
 174     else
 175         false
 176     fi
 177 }
 178
 179
 180 fallback_default_p ()
 181 {
 182     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 183         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 184 }
 185
 186 class_is_variable_p ()
 187 {
 188     case "${class}" in
 189         *v* | *V* ) true ;;
 190         * ) false ;;
 191     esac
 192 }
 193
 194 class_is_function_p ()
 195 {
 196     case "${class}" in
 197         *f* | *F* | *m* | *M* ) true ;;
 198         * ) false ;;
 199     esac
 200 }
 201
 202 class_is_multiarch_p ()
 203 {
 204     case "${class}" in
 205         *m* | *M* ) true ;;
 206         * ) false ;;
 207     esac
 208 }
 209
 210 class_is_predicate_p ()
 211 {
 212     case "${class}" in
 213         *F* | *V* | *M* ) true ;;
 214         * ) false ;;
 215     esac
 216 }
 217
 218 class_is_info_p ()
 219 {
 220     case "${class}" in
 221         *i* ) true ;;
 222         * ) false ;;
 223     esac
 224 }
 225
 226
 227 # dump out/verify the doco
 228 for field in ${read}
 229 do
 230   case ${field} in
 231
 232     class ) : ;;
 233
 234         # # -> line disable
 235         # f -> function
 236         #   hiding a function
 237         # F -> function + predicate
 238         #   hiding a function + predicate to test function validity
 239         # v -> variable
 240         #   hiding a variable
 241         # V -> variable + predicate
 242         #   hiding a variable + predicate to test variables validity
 243         # i -> set from info
 244         #   hiding something from the ``struct info'' object
 245         # m -> multi-arch function
 246         #   hiding a multi-arch function (parameterised with the architecture)
 247         # M -> multi-arch function + predicate
 248         #   hiding a multi-arch function + predicate to test function validity
 249
 250     macro ) : ;;
 251
 252         # The name of the legacy C macro by which this method can be
 253         # accessed.  If empty, no macro is defined.  If "=", a macro
 254         # formed from the upper-case function name is used.
 255
 256     returntype ) : ;;
 257
 258         # For functions, the return type; for variables, the data type
 259
 260     function ) : ;;
 261
 262         # For functions, the member function name; for variables, the
 263         # variable name.  Member function names are always prefixed with
 264         # ``gdbarch_'' for name-space purity.
 265
 266     formal ) : ;;
 267
 268         # The formal argument list.  It is assumed that the formal
 269         # argument list includes the actual name of each list element.
 270         # A function with no arguments shall have ``void'' as the
 271         # formal argument list.
 272
 273     actual ) : ;;
 274
 275         # The list of actual arguments.  The arguments specified shall
 276         # match the FORMAL list given above.  Functions with out
 277         # arguments leave this blank.
 278
 279     staticdefault ) : ;;
 280
 281         # To help with the GDB startup a static gdbarch object is
 282         # created.  STATICDEFAULT is the value to insert into that
 283         # static gdbarch object.  Since this a static object only
 284         # simple expressions can be used.
 285
 286         # If STATICDEFAULT is empty, zero is used.
 287
 288     predefault ) : ;;
 289
 290         # An initial value to assign to MEMBER of the freshly
 291         # malloc()ed gdbarch object.  After initialization, the
 292         # freshly malloc()ed object is passed to the target
 293         # architecture code for further updates.
 294
 295         # If PREDEFAULT is empty, zero is used.
 296
 297         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 298         # INVALID_P are specified, PREDEFAULT will be used as the
 299         # default for the non- multi-arch target.
 300
 301         # A zero PREDEFAULT function will force the fallback to call
 302         # internal_error().
 303
 304         # Variable declarations can refer to ``gdbarch'' which will
 305         # contain the current architecture.  Care should be taken.
 306
 307     postdefault ) : ;;
 308
 309         # A value to assign to MEMBER of the new gdbarch object should
 310         # the target architecture code fail to change the PREDEFAULT
 311         # value.
 312
 313         # If POSTDEFAULT is empty, no post update is performed.
 314
 315         # If both INVALID_P and POSTDEFAULT are non-empty then
 316         # INVALID_P will be used to determine if MEMBER should be
 317         # changed to POSTDEFAULT.
 318
 319         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 320         # specified, POSTDEFAULT will be used as the default for the
 321         # non- multi-arch target (regardless of the value of
 322         # PREDEFAULT).
 323
 324         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 325
 326         # Variable declarations can refer to ``current_gdbarch'' which
 327         # will contain the current architecture.  Care should be
 328         # taken.
 329
 330     invalid_p ) : ;;
 331
 332         # A predicate equation that validates MEMBER.  Non-zero is
 333         # returned if the code creating the new architecture failed to
 334         # initialize MEMBER or the initialized the member is invalid.
 335         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 336         # that value.  If POSTDEFAULT is empty then internal_error()
 337         # is called.
 338
 339         # If INVALID_P is empty, a check that MEMBER is no longer
 340         # equal to PREDEFAULT is used.
 341
 342         # The expression ``0'' disables the INVALID_P check making
 343         # PREDEFAULT a legitimate value.
 344
 345         # See also PREDEFAULT and POSTDEFAULT.
 346
 347     print ) : ;;
 348
 349         # An optional expression that convers MEMBER to a value
 350         # suitable for formatting using %s.
 351
 352         # If PRINT is empty, paddr_nz (for CORE_ADDR) or paddr_d
 353         # (anything else) is used.
 354
 355     garbage_at_eol ) : ;;
 356
 357         # Catches stray fields.
 358
 359     *)
 360         echo "Bad field ${field}"
 361         exit 1;;
 362   esac
 363 done
 364
 365
 366 function_list ()
 367 {
 368   # See below (DOCO) for description of each field
 369   cat <<EOF
 370 i:TARGET_ARCHITECTURE:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::TARGET_ARCHITECTURE->printable_name
 371 #
 372 i::int:byte_order:::BFD_ENDIAN_BIG
 373 #
 374 i::enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
 375 #
 376 i::const struct target_desc *:target_desc:::::::paddr_d ((long) current_gdbarch->target_desc)
 377 # Number of bits in a char or unsigned char for the target machine.
 378 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 379 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 380 #
 381 # Number of bits in a short or unsigned short for the target machine.
 382 v:TARGET_SHORT_BIT:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 383 # Number of bits in an int or unsigned int for the target machine.
 384 v:TARGET_INT_BIT:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 385 # Number of bits in a long or unsigned long for the target machine.
 386 v:TARGET_LONG_BIT:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 387 # Number of bits in a long long or unsigned long long for the target
 388 # machine.
 389 v:TARGET_LONG_LONG_BIT:int:long_long_bit:::8 * sizeof (LONGEST):2*TARGET_LONG_BIT::0
 390
 391 # The ABI default bit-size and format for "float", "double", and "long
 392 # double".  These bit/format pairs should eventually be combined into
 393 # a single object.  For the moment, just initialize them as a pair.
 394 # Each format describes both the big and little endian layouts (if
 395 # useful).
 396
 397 v:TARGET_FLOAT_BIT:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 398 v:TARGET_FLOAT_FORMAT:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (current_gdbarch->float_format)
 399 v:TARGET_DOUBLE_BIT:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 400 v:TARGET_DOUBLE_FORMAT:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (current_gdbarch->double_format)
 401 v:TARGET_LONG_DOUBLE_BIT:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
 402 v:TARGET_LONG_DOUBLE_FORMAT:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (current_gdbarch->long_double_format)
 403
 404 # For most targets, a pointer on the target and its representation as an
 405 # address in GDB have the same size and "look the same".  For such a
 406 # target, you need only set TARGET_PTR_BIT / ptr_bit and TARGET_ADDR_BIT
 407 # / addr_bit will be set from it.
 408 #
 409 # If TARGET_PTR_BIT and TARGET_ADDR_BIT are different, you'll probably
 410 # also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 411 # as well.
 412 #
 413 # ptr_bit is the size of a pointer on the target
 414 v:TARGET_PTR_BIT:int:ptr_bit:::8 * sizeof (void*):TARGET_INT_BIT::0
 415 # addr_bit is the size of a target address as represented in gdb
 416 v:TARGET_ADDR_BIT:int:addr_bit:::8 * sizeof (void*):0:TARGET_PTR_BIT:
 417 # Number of bits in a BFD_VMA for the target object file format.
 418 v:TARGET_BFD_VMA_BIT:int:bfd_vma_bit:::8 * sizeof (void*):TARGET_ARCHITECTURE->bits_per_address::0
 419 #
 420 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 421 v::int:char_signed:::1:-1:1
 422 #
 423 F:TARGET_READ_PC:CORE_ADDR:read_pc:ptid_t ptid:ptid
 424 f:TARGET_WRITE_PC:void:write_pc:CORE_ADDR val, ptid_t ptid:val, ptid:0:generic_target_write_pc::0
 425 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 426 # whole scheme for dealing with "frames" and "frame pointers" needs a
 427 # serious shakedown.
 428 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
 429 #
 430 M::void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
 431 M::void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
 432 #
 433 v::int:num_regs:::0:-1
 434 # This macro gives the number of pseudo-registers that live in the
 435 # register namespace but do not get fetched or stored on the target.
 436 # These pseudo-registers may be aliases for other registers,
 437 # combinations of other registers, or they may be computed by GDB.
 438 v::int:num_pseudo_regs:::0:0::0
 439
 440 # GDB's standard (or well known) register numbers.  These can map onto
 441 # a real register or a pseudo (computed) register or not be defined at
 442 # all (-1).
 443 # SP_REGNUM will hopefully be replaced by UNWIND_SP.
 444 v:=:int:sp_regnum:::-1:-1::0
 445 v:=:int:pc_regnum:::-1:-1::0
 446 v:=:int:ps_regnum:::-1:-1::0
 447 v:=:int:fp0_regnum:::0:-1::0
 448 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
 449 f:=:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
 450 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
 451 f:=:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
 452 # Provide a default mapping from a DWARF register number to a gdb REGNUM.
 453 f:=:int:dwarf_reg_to_regnum:int dwarf_regnr:dwarf_regnr::no_op_reg_to_regnum::0
 454 # Convert from an sdb register number to an internal gdb register number.
 455 f:=:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
 456 f:=:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
 457 f:=:const char *:register_name:int regnr:regnr
 458
 459 # Return the type of a register specified by the architecture.  Only
 460 # the register cache should call this function directly; others should
 461 # use "register_type".
 462 M::struct type *:register_type:int reg_nr:reg_nr
 463
 464 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
 465 M::struct frame_id:unwind_dummy_id:struct frame_info *info:info
 466 # Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
 467 # DEPRECATED_FP_REGNUM.
 468 v:=:int:deprecated_fp_regnum:::-1:-1::0
 469
 470 # See gdbint.texinfo.  See infcall.c.
 471 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
 472 # DEPRECATED_REGISTER_SIZE can be deleted.
 473 v:=:int:deprecated_register_size
 474 v::int:call_dummy_location::::AT_ENTRY_POINT::0
 475 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
 476
 477 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
 478 M::void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 479 M::void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 480 # MAP a GDB RAW register number onto a simulator register number.  See
 481 # also include/...-sim.h.
 482 f:=:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
 483 F:=:int:register_bytes_ok:long nr_bytes:nr_bytes
 484 f::int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
 485 f::int:cannot_store_register:int regnum:regnum::cannot_register_not::0
 486 # setjmp/longjmp support.
 487 F::int:get_longjmp_target:CORE_ADDR *pc:pc
 488 #
 489 v:=:int:believe_pcc_promotion:::::::
 490 #
 491 f:=:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
 492 f:=:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
 493 f:=:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
 494 # Construct a value representing the contents of register REGNUM in
 495 # frame FRAME, interpreted as type TYPE.  The routine needs to
 496 # allocate and return a struct value with all value attributes
 497 # (but not the value contents) filled in.
 498 f::struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::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 # It has been suggested that this, well actually its predecessor,
 505 # should take the type/value of the function to be called and not the
 506 # return type.  This is left as an exercise for the reader.
 507
 508 # NOTE: cagney/2004-06-13: The function stack.c:return_command uses
 509 # the predicate with default hack to avoid calling STORE_RETURN_VALUE
 510 # (via legacy_return_value), when a small struct is involved.
 511
 512 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
 513
 514 # The deprecated methods EXTRACT_RETURN_VALUE, STORE_RETURN_VALUE,
 515 # DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS and
 516 # DEPRECATED_USE_STRUCT_CONVENTION have all been folded into
 517 # RETURN_VALUE.
 518
 519 f:=:void:extract_return_value:struct type *type, struct regcache *regcache, gdb_byte *valbuf:type, regcache, valbuf:0
 520 f:=:void:store_return_value:struct type *type, struct regcache *regcache, const gdb_byte *valbuf:type, regcache, valbuf:0
 521 f:=:int:deprecated_use_struct_convention:int gcc_p, struct type *value_type:gcc_p, value_type::generic_use_struct_convention::0
 522
 523 # As of 2004-01-17 only the 32-bit SPARC ABI has been identified as an
 524 # ABI suitable for the implementation of a robust extract
 525 # struct-convention return-value address method (the sparc saves the
 526 # address in the callers frame).  All the other cases so far examined,
 527 # the DEPRECATED_EXTRACT_STRUCT_VALUE implementation has been
 528 # erreneous - the code was incorrectly assuming that the return-value
 529 # address, stored in a register, was preserved across the entire
 530 # function call.
 531
 532 # For the moment retain DEPRECATED_EXTRACT_STRUCT_VALUE as a marker of
 533 # the ABIs that are still to be analyzed - perhaps this should simply
 534 # be deleted.  The commented out extract_returned_value_address method
 535 # is provided as a starting point for the 32-bit SPARC.  It, or
 536 # something like it, along with changes to both infcmd.c and stack.c
 537 # will be needed for that case to work.  NB: It is passed the callers
 538 # frame since it is only after the callee has returned that this
 539 # function is used.
 540
 541 #M::CORE_ADDR:extract_returned_value_address:struct frame_info *caller_frame:caller_frame
 542 F:=:CORE_ADDR:deprecated_extract_struct_value_address:struct regcache *regcache:regcache
 543
 544 #
 545 f:=:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
 546 f:=:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
 547 f:=:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
 548 M::CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
 549 f:=:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
 550 f:=:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
 551 v:=:CORE_ADDR:decr_pc_after_break:::0:::0
 552
 553 # A function can be addressed by either it's "pointer" (possibly a
 554 # descriptor address) or "entry point" (first executable instruction).
 555 # The method "convert_from_func_ptr_addr" converting the former to the
 556 # latter.  DEPRECATED_FUNCTION_START_OFFSET is being used to implement
 557 # a simplified subset of that functionality - the function's address
 558 # corresponds to the "function pointer" and the function's start
 559 # corresponds to the "function entry point" - and hence is redundant.
 560
 561 v:=:CORE_ADDR:deprecated_function_start_offset:::0:::0
 562
 563 # Return the remote protocol register number associated with this
 564 # register.  Normally the identity mapping.
 565 m::int:remote_register_number:int regno:regno::default_remote_register_number::0
 566
 567 # Fetch the target specific address used to represent a load module.
 568 F:=:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
 569 #
 570 v:=:CORE_ADDR:frame_args_skip:::0:::0
 571 M::CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
 572 M::CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
 573 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 574 # frame-base.  Enable frame-base before frame-unwind.
 575 F:=:int:frame_num_args:struct frame_info *frame:frame
 576 #
 577 # DEPRECATED_STACK_ALIGN has been replaced by an initial aligning call
 578 # to frame_align and the requirement that methods such as
 579 # push_dummy_call and frame_red_zone_size maintain correct stack/frame
 580 # alignment.
 581 F:=:CORE_ADDR:deprecated_stack_align:CORE_ADDR sp:sp
 582 M::CORE_ADDR:frame_align:CORE_ADDR address:address
 583 # DEPRECATED_REG_STRUCT_HAS_ADDR has been replaced by
 584 # stabs_argument_has_addr.
 585 F:=:int:deprecated_reg_struct_has_addr:int gcc_p, struct type *type:gcc_p, type
 586 m::int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
 587 v:=:int:frame_red_zone_size
 588 #
 589 m::CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
 590 # On some machines there are bits in addresses which are not really
 591 # part of the address, but are used by the kernel, the hardware, etc.
 592 # for special purposes.  ADDR_BITS_REMOVE takes out any such bits so
 593 # we get a "real" address such as one would find in a symbol table.
 594 # This is used only for addresses of instructions, and even then I'm
 595 # not sure it's used in all contexts.  It exists to deal with there
 596 # being a few stray bits in the PC which would mislead us, not as some
 597 # sort of generic thing to handle alignment or segmentation (it's
 598 # possible it should be in TARGET_READ_PC instead).
 599 f:=:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
 600 # It is not at all clear why SMASH_TEXT_ADDRESS is not folded into
 601 # ADDR_BITS_REMOVE.
 602 f:=:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
 603
 604 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 605 # indicates if the target needs software single step.  An ISA method to
 606 # implement it.
 607 #
 608 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 609 # breakpoints using the breakpoint system instead of blatting memory directly
 610 # (as with rs6000).
 611 #
 612 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 613 # target can single step.  If not, then implement single step using breakpoints.
 614 #
 615 # A return value of 1 means that the software_single_step breakpoints
 616 # were inserted; 0 means they were not.
 617 F:=:int:software_single_step:struct regcache *regcache:regcache
 618
 619 # Return non-zero if the processor is executing a delay slot and a
 620 # further single-step is needed before the instruction finishes.
 621 M::int:single_step_through_delay:struct frame_info *frame:frame
 622 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 623 # disassembler.  Perhaps objdump can handle it?
 624 f:TARGET_PRINT_INSN:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
 625 f:=:CORE_ADDR:skip_trampoline_code:CORE_ADDR pc:pc::generic_skip_trampoline_code::0
 626
 627
 628 # If IN_SOLIB_DYNSYM_RESOLVE_CODE returns true, and SKIP_SOLIB_RESOLVER
 629 # evaluates non-zero, this is the address where the debugger will place
 630 # a step-resume breakpoint to get us past the dynamic linker.
 631 m::CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
 632 # Some systems also have trampoline code for returning from shared libs.
 633 f:=:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
 634
 635 # A target might have problems with watchpoints as soon as the stack
 636 # frame of the current function has been destroyed.  This mostly happens
 637 # as the first action in a funtion's epilogue.  in_function_epilogue_p()
 638 # is defined to return a non-zero value if either the given addr is one
 639 # instruction after the stack destroying instruction up to the trailing
 640 # return instruction or if we can figure out that the stack frame has
 641 # already been invalidated regardless of the value of addr.  Targets
 642 # which don't suffer from that problem could just let this functionality
 643 # untouched.
 644 m::int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
 645 # Given a vector of command-line arguments, return a newly allocated
 646 # string which, when passed to the create_inferior function, will be
 647 # parsed (on Unix systems, by the shell) to yield the same vector.
 648 # This function should call error() if the argument vector is not
 649 # representable for this target or if this target does not support
 650 # command-line arguments.
 651 # ARGC is the number of elements in the vector.
 652 # ARGV is an array of strings, one per argument.
 653 m::char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
 654 f:=:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
 655 f:=:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
 656 v:=:const char *:name_of_malloc:::"malloc":"malloc"::0:NAME_OF_MALLOC
 657 v:=:int:cannot_step_breakpoint:::0:0::0
 658 v:=:int:have_nonsteppable_watchpoint:::0:0::0
 659 F:=:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
 660 M::const char *:address_class_type_flags_to_name:int type_flags:type_flags
 661 M::int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
 662 # Is a register in a group
 663 m::int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
 664 # Fetch the pointer to the ith function argument.
 665 F:=:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
 666
 667 # Return the appropriate register set for a core file section with
 668 # name SECT_NAME and size SECT_SIZE.
 669 M::const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
 670
 671 # If the elements of C++ vtables are in-place function descriptors rather
 672 # than normal function pointers (which may point to code or a descriptor),
 673 # set this to one.
 674 v::int:vtable_function_descriptors:::0:0::0
 675
 676 # Set if the least significant bit of the delta is used instead of the least
 677 # significant bit of the pfn for pointers to virtual member functions.
 678 v::int:vbit_in_delta:::0:0::0
 679
 680 # Advance PC to next instruction in order to skip a permanent breakpoint.
 681 F::void:skip_permanent_breakpoint:struct regcache *regcache:regcache
 682
 683 # Refresh overlay mapped state for section OSECT.
 684 F::void:overlay_update:struct obj_section *osect:osect
 685 EOF
 686 }
 687
 688 #
 689 # The .log file
 690 #
 691 exec > new-gdbarch.log
 692 function_list | while do_read
 693 do
 694     cat <<EOF
 695 ${class} ${returntype} ${function} ($formal)
 696 EOF
 697     for r in ${read}
 698     do
 699         eval echo \"\ \ \ \ ${r}=\${${r}}\"
 700     done
 701     if class_is_predicate_p && fallback_default_p
 702     then
 703         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
 704         kill $$
 705         exit 1
 706     fi
 707     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
 708     then
 709         echo "Error: postdefault is useless when invalid_p=0" 1>&2
 710         kill $$
 711         exit 1
 712     fi
 713     if class_is_multiarch_p
 714     then
 715         if class_is_predicate_p ; then :
 716         elif test "x${predefault}" = "x"
 717         then
 718             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
 719             kill $$
 720             exit 1
 721         fi
 722     fi
 723     echo ""
 724 done
 725
 726 exec 1>&2
 727 compare_new gdbarch.log
 728
 729
 730 copyright ()
 731 {
 732 cat <<EOF
 733 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
 734
 735 /* Dynamic architecture support for GDB, the GNU debugger.
 736
 737    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
 738    Free Software Foundation, Inc.
 739
 740    This file is part of GDB.
 741
 742    This program is free software; you can redistribute it and/or modify
 743    it under the terms of the GNU General Public License as published by
 744    the Free Software Foundation; either version 2 of the License, or
 745    (at your option) any later version.
 746
 747    This program is distributed in the hope that it will be useful,
 748    but WITHOUT ANY WARRANTY; without even the implied warranty of
 749    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 750    GNU General Public License for more details.
 751
 752    You should have received a copy of the GNU General Public License
 753    along with this program; if not, write to the Free Software
 754    Foundation, Inc., 51 Franklin Street, Fifth Floor,
 755    Boston, MA 02110-1301, USA.  */
 756
 757 /* This file was created with the aid of \`\`gdbarch.sh''.
 758
 759    The Bourne shell script \`\`gdbarch.sh'' creates the files
 760    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
 761    against the existing \`\`gdbarch.[hc]''.  Any differences found
 762    being reported.
 763
 764    If editing this file, please also run gdbarch.sh and merge any
 765    changes into that script. Conversely, when making sweeping changes
 766    to this file, modifying gdbarch.sh and using its output may prove
 767    easier. */
 768
 769 EOF
 770 }
 771
 772 #
 773 # The .h file
 774 #
 775
 776 exec > new-gdbarch.h
 777 copyright
 778 cat <<EOF
 779 #ifndef GDBARCH_H
 780 #define GDBARCH_H
 781
 782 struct floatformat;
 783 struct ui_file;
 784 struct frame_info;
 785 struct value;
 786 struct objfile;
 787 struct obj_section;
 788 struct minimal_symbol;
 789 struct regcache;
 790 struct reggroup;
 791 struct regset;
 792 struct disassemble_info;
 793 struct target_ops;
 794 struct obstack;
 795 struct bp_target_info;
 796 struct target_desc;
 797
 798 extern struct gdbarch *current_gdbarch;
 799 EOF
 800
 801 # function typedef's
 802 printf "\n"
 803 printf "\n"
 804 printf "/* The following are pre-initialized by GDBARCH. */\n"
 805 function_list | while do_read
 806 do
 807     if class_is_info_p
 808     then
 809         printf "\n"
 810         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 811         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
 812         if test -n "${macro}"
 813         then
 814             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 815             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 816             printf "#endif\n"
 817             printf "#if !defined (${macro})\n"
 818             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 819             printf "#endif\n"
 820         fi
 821     fi
 822 done
 823
 824 # function typedef's
 825 printf "\n"
 826 printf "\n"
 827 printf "/* The following are initialized by the target dependent code. */\n"
 828 function_list | while do_read
 829 do
 830     if [ -n "${comment}" ]
 831     then
 832         echo "${comment}" | sed \
 833             -e '2 s,#,/*,' \
 834             -e '3,$ s,#,  ,' \
 835             -e '$ s,$, */,'
 836     fi
 837
 838     if class_is_predicate_p
 839     then
 840         if test -n "${macro}"
 841         then
 842             printf "\n"
 843             printf "#if defined (${macro})\n"
 844             printf "/* Legacy for systems yet to multi-arch ${macro} */\n"
 845             printf "#if !defined (${macro}_P)\n"
 846             printf "#define ${macro}_P() (1)\n"
 847             printf "#endif\n"
 848             printf "#endif\n"
 849         fi
 850         printf "\n"
 851         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 852         if test -n "${macro}"
 853         then
 854             printf "#if !defined (GDB_TM_FILE) && defined (${macro}_P)\n"
 855             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 856             printf "#endif\n"
 857             printf "#if !defined (${macro}_P)\n"
 858             printf "#define ${macro}_P() (gdbarch_${function}_p (current_gdbarch))\n"
 859             printf "#endif\n"
 860         fi
 861     fi
 862     if class_is_variable_p
 863     then
 864         printf "\n"
 865         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 866         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
 867         if test -n "${macro}"
 868         then
 869             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 870             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 871             printf "#endif\n"
 872             printf "#if !defined (${macro})\n"
 873             printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 874             printf "#endif\n"
 875         fi
 876     fi
 877     if class_is_function_p
 878     then
 879         printf "\n"
 880         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
 881         then
 882             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
 883         elif class_is_multiarch_p
 884         then
 885             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
 886         else
 887             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
 888         fi
 889         if [ "x${formal}" = "xvoid" ]
 890         then
 891           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 892         else
 893           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
 894         fi
 895         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
 896         if test -n "${macro}"
 897         then
 898             printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
 899             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 900             printf "#endif\n"
 901             if [ "x${actual}" = "x" ]
 902             then
 903                 d="#define ${macro}() (gdbarch_${function} (current_gdbarch))"
 904             elif [ "x${actual}" = "x-" ]
 905             then
 906                 d="#define ${macro} (gdbarch_${function} (current_gdbarch))"
 907             else
 908                 d="#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))"
 909             fi
 910             printf "#if !defined (${macro})\n"
 911             if [ "x${actual}" = "x" ]
 912             then
 913                 printf "#define ${macro}() (gdbarch_${function} (current_gdbarch))\n"
 914             elif [ "x${actual}" = "x-" ]
 915             then
 916                 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 917             else
 918                 printf "#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))\n"
 919             fi
 920             printf "#endif\n"
 921         fi
 922     fi
 923 done
 924
 925 # close it off
 926 cat <<EOF
 927
 928 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 929
 930
 931 /* Mechanism for co-ordinating the selection of a specific
 932    architecture.
 933
 934    GDB targets (*-tdep.c) can register an interest in a specific
 935    architecture.  Other GDB components can register a need to maintain
 936    per-architecture data.
 937
 938    The mechanisms below ensures that there is only a loose connection
 939    between the set-architecture command and the various GDB
 940    components.  Each component can independently register their need
 941    to maintain architecture specific data with gdbarch.
 942
 943    Pragmatics:
 944
 945    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 946    didn't scale.
 947
 948    The more traditional mega-struct containing architecture specific
 949    data for all the various GDB components was also considered.  Since
 950    GDB is built from a variable number of (fairly independent)
 951    components it was determined that the global aproach was not
 952    applicable. */
 953
 954
 955 /* Register a new architectural family with GDB.
 956
 957    Register support for the specified ARCHITECTURE with GDB.  When
 958    gdbarch determines that the specified architecture has been
 959    selected, the corresponding INIT function is called.
 960
 961    --
 962
 963    The INIT function takes two parameters: INFO which contains the
 964    information available to gdbarch about the (possibly new)
 965    architecture; ARCHES which is a list of the previously created
 966    \`\`struct gdbarch'' for this architecture.
 967
 968    The INFO parameter is, as far as possible, be pre-initialized with
 969    information obtained from INFO.ABFD or the global defaults.
 970
 971    The ARCHES parameter is a linked list (sorted most recently used)
 972    of all the previously created architures for this architecture
 973    family.  The (possibly NULL) ARCHES->gdbarch can used to access
 974    values from the previously selected architecture for this
 975    architecture family.  The global \`\`current_gdbarch'' shall not be
 976    used.
 977
 978    The INIT function shall return any of: NULL - indicating that it
 979    doesn't recognize the selected architecture; an existing \`\`struct
 980    gdbarch'' from the ARCHES list - indicating that the new
 981    architecture is just a synonym for an earlier architecture (see
 982    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
 983    - that describes the selected architecture (see gdbarch_alloc()).
 984
 985    The DUMP_TDEP function shall print out all target specific values.
 986    Care should be taken to ensure that the function works in both the
 987    multi-arch and non- multi-arch cases. */
 988
 989 struct gdbarch_list
 990 {
 991   struct gdbarch *gdbarch;
 992   struct gdbarch_list *next;
 993 };
 994
 995 struct gdbarch_info
 996 {
 997   /* Use default: NULL (ZERO). */
 998   const struct bfd_arch_info *bfd_arch_info;
 999
1000   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
1001   int byte_order;
1002
1003   /* Use default: NULL (ZERO). */
1004   bfd *abfd;
1005
1006   /* Use default: NULL (ZERO). */
1007   struct gdbarch_tdep_info *tdep_info;
1008
1009   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
1010   enum gdb_osabi osabi;
1011
1012   /* Use default: NULL (ZERO).  */
1013   const struct target_desc *target_desc;
1014 };
1015
1016 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1017 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1018
1019 /* DEPRECATED - use gdbarch_register() */
1020 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1021
1022 extern void gdbarch_register (enum bfd_architecture architecture,
1023                               gdbarch_init_ftype *,
1024                               gdbarch_dump_tdep_ftype *);
1025
1026
1027 /* Return a freshly allocated, NULL terminated, array of the valid
1028    architecture names.  Since architectures are registered during the
1029    _initialize phase this function only returns useful information
1030    once initialization has been completed. */
1031
1032 extern const char **gdbarch_printable_names (void);
1033
1034
1035 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1036    matches the information provided by INFO. */
1037
1038 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1039
1040
1041 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
1042    basic initialization using values obtained from the INFO and TDEP
1043    parameters.  set_gdbarch_*() functions are called to complete the
1044    initialization of the object. */
1045
1046 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1047
1048
1049 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1050    It is assumed that the caller freeds the \`\`struct
1051    gdbarch_tdep''. */
1052
1053 extern void gdbarch_free (struct gdbarch *);
1054
1055
1056 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1057    obstack.  The memory is freed when the corresponding architecture
1058    is also freed.  */
1059
1060 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1061 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1062 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1063
1064
1065 /* Helper function. Force an update of the current architecture.
1066
1067    The actual architecture selected is determined by INFO, \`\`(gdb) set
1068    architecture'' et.al., the existing architecture and BFD's default
1069    architecture.  INFO should be initialized to zero and then selected
1070    fields should be updated.
1071
1072    Returns non-zero if the update succeeds */
1073
1074 extern int gdbarch_update_p (struct gdbarch_info info);
1075
1076
1077 /* Helper function.  Find an architecture matching info.
1078
1079    INFO should be initialized using gdbarch_info_init, relevant fields
1080    set, and then finished using gdbarch_info_fill.
1081
1082    Returns the corresponding architecture, or NULL if no matching
1083    architecture was found.  "current_gdbarch" is not updated.  */
1084
1085 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1086
1087
1088 /* Helper function.  Set the global "current_gdbarch" to "gdbarch".
1089
1090    FIXME: kettenis/20031124: Of the functions that follow, only
1091    gdbarch_from_bfd is supposed to survive.  The others will
1092    dissappear since in the future GDB will (hopefully) be truly
1093    multi-arch.  However, for now we're still stuck with the concept of
1094    a single active architecture.  */
1095
1096 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1097
1098
1099 /* Register per-architecture data-pointer.
1100
1101    Reserve space for a per-architecture data-pointer.  An identifier
1102    for the reserved data-pointer is returned.  That identifer should
1103    be saved in a local static variable.
1104
1105    Memory for the per-architecture data shall be allocated using
1106    gdbarch_obstack_zalloc.  That memory will be deleted when the
1107    corresponding architecture object is deleted.
1108
1109    When a previously created architecture is re-selected, the
1110    per-architecture data-pointer for that previous architecture is
1111    restored.  INIT() is not re-called.
1112
1113    Multiple registrarants for any architecture are allowed (and
1114    strongly encouraged).  */
1115
1116 struct gdbarch_data;
1117
1118 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1119 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1120 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1121 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1122 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1123                                          struct gdbarch_data *data,
1124                                          void *pointer);
1125
1126 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1127
1128
1129
1130 /* Register per-architecture memory region.
1131
1132    Provide a memory-region swap mechanism.  Per-architecture memory
1133    region are created.  These memory regions are swapped whenever the
1134    architecture is changed.  For a new architecture, the memory region
1135    is initialized with zero (0) and the INIT function is called.
1136
1137    Memory regions are swapped / initialized in the order that they are
1138    registered.  NULL DATA and/or INIT values can be specified.
1139
1140    New code should use gdbarch_data_register_*(). */
1141
1142 typedef void (gdbarch_swap_ftype) (void);
1143 extern void deprecated_register_gdbarch_swap (void *data, unsigned long size, gdbarch_swap_ftype *init);
1144 #define DEPRECATED_REGISTER_GDBARCH_SWAP(VAR) deprecated_register_gdbarch_swap (&(VAR), sizeof ((VAR)), NULL)
1145
1146
1147
1148 /* Set the dynamic target-system-dependent parameters (architecture,
1149    byte-order, ...) using information found in the BFD */
1150
1151 extern void set_gdbarch_from_file (bfd *);
1152
1153
1154 /* Initialize the current architecture to the "first" one we find on
1155    our list.  */
1156
1157 extern void initialize_current_architecture (void);
1158
1159 /* gdbarch trace variable */
1160 extern int gdbarch_debug;
1161
1162 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1163
1164 #endif
1165 EOF
1166 exec 1>&2
1167 #../move-if-change new-gdbarch.h gdbarch.h
1168 compare_new gdbarch.h
1169
1170
1171 #
1172 # C file
1173 #
1174
1175 exec > new-gdbarch.c
1176 copyright
1177 cat <<EOF
1178
1179 #include "defs.h"
1180 #include "arch-utils.h"
1181
1182 #include "gdbcmd.h"
1183 #include "inferior.h"
1184 #include "symcat.h"
1185
1186 #include "floatformat.h"
1187
1188 #include "gdb_assert.h"
1189 #include "gdb_string.h"
1190 #include "gdb-events.h"
1191 #include "reggroups.h"
1192 #include "osabi.h"
1193 #include "gdb_obstack.h"
1194
1195 /* Static function declarations */
1196
1197 static void alloc_gdbarch_data (struct gdbarch *);
1198
1199 /* Non-zero if we want to trace architecture code.  */
1200
1201 #ifndef GDBARCH_DEBUG
1202 #define GDBARCH_DEBUG 0
1203 #endif
1204 int gdbarch_debug = GDBARCH_DEBUG;
1205 static void
1206 show_gdbarch_debug (struct ui_file *file, int from_tty,
1207                     struct cmd_list_element *c, const char *value)
1208 {
1209   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1210 }
1211
1212 static const char *
1213 pformat (const struct floatformat **format)
1214 {
1215   if (format == NULL)
1216     return "(null)";
1217   else
1218     /* Just print out one of them - this is only for diagnostics.  */
1219     return format[0]->name;
1220 }
1221
1222 EOF
1223
1224 # gdbarch open the gdbarch object
1225 printf "\n"
1226 printf "/* Maintain the struct gdbarch object */\n"
1227 printf "\n"
1228 printf "struct gdbarch\n"
1229 printf "{\n"
1230 printf "  /* Has this architecture been fully initialized?  */\n"
1231 printf "  int initialized_p;\n"
1232 printf "\n"
1233 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1234 printf "  struct obstack *obstack;\n"
1235 printf "\n"
1236 printf "  /* basic architectural information */\n"
1237 function_list | while do_read
1238 do
1239     if class_is_info_p
1240     then
1241         printf "  ${returntype} ${function};\n"
1242     fi
1243 done
1244 printf "\n"
1245 printf "  /* target specific vector. */\n"
1246 printf "  struct gdbarch_tdep *tdep;\n"
1247 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1248 printf "\n"
1249 printf "  /* per-architecture data-pointers */\n"
1250 printf "  unsigned nr_data;\n"
1251 printf "  void **data;\n"
1252 printf "\n"
1253 printf "  /* per-architecture swap-regions */\n"
1254 printf "  struct gdbarch_swap *swap;\n"
1255 printf "\n"
1256 cat <<EOF
1257   /* Multi-arch values.
1258
1259      When extending this structure you must:
1260
1261      Add the field below.
1262
1263      Declare set/get functions and define the corresponding
1264      macro in gdbarch.h.
1265
1266      gdbarch_alloc(): If zero/NULL is not a suitable default,
1267      initialize the new field.
1268
1269      verify_gdbarch(): Confirm that the target updated the field
1270      correctly.
1271
1272      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1273      field is dumped out
1274
1275      \`\`startup_gdbarch()'': Append an initial value to the static
1276      variable (base values on the host's c-type system).
1277
1278      get_gdbarch(): Implement the set/get functions (probably using
1279      the macro's as shortcuts).
1280
1281      */
1282
1283 EOF
1284 function_list | while do_read
1285 do
1286     if class_is_variable_p
1287     then
1288         printf "  ${returntype} ${function};\n"
1289     elif class_is_function_p
1290     then
1291         printf "  gdbarch_${function}_ftype *${function};\n"
1292     fi
1293 done
1294 printf "};\n"
1295
1296 # A pre-initialized vector
1297 printf "\n"
1298 printf "\n"
1299 cat <<EOF
1300 /* The default architecture uses host values (for want of a better
1301    choice). */
1302 EOF
1303 printf "\n"
1304 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1305 printf "\n"
1306 printf "struct gdbarch startup_gdbarch =\n"
1307 printf "{\n"
1308 printf "  1, /* Always initialized.  */\n"
1309 printf "  NULL, /* The obstack.  */\n"
1310 printf "  /* basic architecture information */\n"
1311 function_list | while do_read
1312 do
1313     if class_is_info_p
1314     then
1315         printf "  ${staticdefault},  /* ${function} */\n"
1316     fi
1317 done
1318 cat <<EOF
1319   /* target specific vector and its dump routine */
1320   NULL, NULL,
1321   /*per-architecture data-pointers and swap regions */
1322   0, NULL, NULL,
1323   /* Multi-arch values */
1324 EOF
1325 function_list | while do_read
1326 do
1327     if class_is_function_p || class_is_variable_p
1328     then
1329         printf "  ${staticdefault},  /* ${function} */\n"
1330     fi
1331 done
1332 cat <<EOF
1333   /* startup_gdbarch() */
1334 };
1335
1336 struct gdbarch *current_gdbarch = &startup_gdbarch;
1337 EOF
1338
1339 # Create a new gdbarch struct
1340 cat <<EOF
1341
1342 /* Create a new \`\`struct gdbarch'' based on information provided by
1343    \`\`struct gdbarch_info''. */
1344 EOF
1345 printf "\n"
1346 cat <<EOF
1347 struct gdbarch *
1348 gdbarch_alloc (const struct gdbarch_info *info,
1349                struct gdbarch_tdep *tdep)
1350 {
1351   /* NOTE: The new architecture variable is named \`\`current_gdbarch''
1352      so that macros such as TARGET_DOUBLE_BIT, when expanded, refer to
1353      the current local architecture and not the previous global
1354      architecture.  This ensures that the new architectures initial
1355      values are not influenced by the previous architecture.  Once
1356      everything is parameterised with gdbarch, this will go away.  */
1357   struct gdbarch *current_gdbarch;
1358
1359   /* Create an obstack for allocating all the per-architecture memory,
1360      then use that to allocate the architecture vector.  */
1361   struct obstack *obstack = XMALLOC (struct obstack);
1362   obstack_init (obstack);
1363   current_gdbarch = obstack_alloc (obstack, sizeof (*current_gdbarch));
1364   memset (current_gdbarch, 0, sizeof (*current_gdbarch));
1365   current_gdbarch->obstack = obstack;
1366
1367   alloc_gdbarch_data (current_gdbarch);
1368
1369   current_gdbarch->tdep = tdep;
1370 EOF
1371 printf "\n"
1372 function_list | while do_read
1373 do
1374     if class_is_info_p
1375     then
1376         printf "  current_gdbarch->${function} = info->${function};\n"
1377     fi
1378 done
1379 printf "\n"
1380 printf "  /* Force the explicit initialization of these. */\n"
1381 function_list | while do_read
1382 do
1383     if class_is_function_p || class_is_variable_p
1384     then
1385         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1386         then
1387           printf "  current_gdbarch->${function} = ${predefault};\n"
1388         fi
1389     fi
1390 done
1391 cat <<EOF
1392   /* gdbarch_alloc() */
1393
1394   return current_gdbarch;
1395 }
1396 EOF
1397
1398 # Free a gdbarch struct.
1399 printf "\n"
1400 printf "\n"
1401 cat <<EOF
1402 /* Allocate extra space using the per-architecture obstack.  */
1403
1404 void *
1405 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1406 {
1407   void *data = obstack_alloc (arch->obstack, size);
1408   memset (data, 0, size);
1409   return data;
1410 }
1411
1412
1413 /* Free a gdbarch struct.  This should never happen in normal
1414    operation --- once you've created a gdbarch, you keep it around.
1415    However, if an architecture's init function encounters an error
1416    building the structure, it may need to clean up a partially
1417    constructed gdbarch.  */
1418
1419 void
1420 gdbarch_free (struct gdbarch *arch)
1421 {
1422   struct obstack *obstack;
1423   gdb_assert (arch != NULL);
1424   gdb_assert (!arch->initialized_p);
1425   obstack = arch->obstack;
1426   obstack_free (obstack, 0); /* Includes the ARCH.  */
1427   xfree (obstack);
1428 }
1429 EOF
1430
1431 # verify a new architecture
1432 cat <<EOF
1433
1434
1435 /* Ensure that all values in a GDBARCH are reasonable.  */
1436
1437 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1438    just happens to match the global variable \`\`current_gdbarch''.  That
1439    way macros refering to that variable get the local and not the global
1440    version - ulgh.  Once everything is parameterised with gdbarch, this
1441    will go away. */
1442
1443 static void
1444 verify_gdbarch (struct gdbarch *current_gdbarch)
1445 {
1446   struct ui_file *log;
1447   struct cleanup *cleanups;
1448   long dummy;
1449   char *buf;
1450   log = mem_fileopen ();
1451   cleanups = make_cleanup_ui_file_delete (log);
1452   /* fundamental */
1453   if (current_gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1454     fprintf_unfiltered (log, "\n\tbyte-order");
1455   if (current_gdbarch->bfd_arch_info == NULL)
1456     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1457   /* Check those that need to be defined for the given multi-arch level. */
1458 EOF
1459 function_list | while do_read
1460 do
1461     if class_is_function_p || class_is_variable_p
1462     then
1463         if [ "x${invalid_p}" = "x0" ]
1464         then
1465             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1466         elif class_is_predicate_p
1467         then
1468             printf "  /* Skip verify of ${function}, has predicate */\n"
1469         # FIXME: See do_read for potential simplification
1470         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1471         then
1472             printf "  if (${invalid_p})\n"
1473             printf "    current_gdbarch->${function} = ${postdefault};\n"
1474         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1475         then
1476             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1477             printf "    current_gdbarch->${function} = ${postdefault};\n"
1478         elif [ -n "${postdefault}" ]
1479         then
1480             printf "  if (current_gdbarch->${function} == 0)\n"
1481             printf "    current_gdbarch->${function} = ${postdefault};\n"
1482         elif [ -n "${invalid_p}" ]
1483         then
1484             printf "  if (${invalid_p})\n"
1485             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1486         elif [ -n "${predefault}" ]
1487         then
1488             printf "  if (current_gdbarch->${function} == ${predefault})\n"
1489             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1490         fi
1491     fi
1492 done
1493 cat <<EOF
1494   buf = ui_file_xstrdup (log, &dummy);
1495   make_cleanup (xfree, buf);
1496   if (strlen (buf) > 0)
1497     internal_error (__FILE__, __LINE__,
1498                     _("verify_gdbarch: the following are invalid ...%s"),
1499                     buf);
1500   do_cleanups (cleanups);
1501 }
1502 EOF
1503
1504 # dump the structure
1505 printf "\n"
1506 printf "\n"
1507 cat <<EOF
1508 /* Print out the details of the current architecture. */
1509
1510 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1511    just happens to match the global variable \`\`current_gdbarch''.  That
1512    way macros refering to that variable get the local and not the global
1513    version - ulgh.  Once everything is parameterised with gdbarch, this
1514    will go away. */
1515
1516 void
1517 gdbarch_dump (struct gdbarch *current_gdbarch, struct ui_file *file)
1518 {
1519   const char *gdb_xm_file = "<not-defined>";
1520   const char *gdb_nm_file = "<not-defined>";
1521   const char *gdb_tm_file = "<not-defined>";
1522 #if defined (GDB_XM_FILE)
1523   gdb_xm_file = GDB_XM_FILE;
1524 #endif
1525   fprintf_unfiltered (file,
1526                       "gdbarch_dump: GDB_XM_FILE = %s\\n",
1527                       gdb_xm_file);
1528 #if defined (GDB_NM_FILE)
1529   gdb_nm_file = GDB_NM_FILE;
1530 #endif
1531   fprintf_unfiltered (file,
1532                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1533                       gdb_nm_file);
1534 #if defined (GDB_TM_FILE)
1535   gdb_tm_file = GDB_TM_FILE;
1536 #endif
1537   fprintf_unfiltered (file,
1538                       "gdbarch_dump: GDB_TM_FILE = %s\\n",
1539                       gdb_tm_file);
1540 EOF
1541 function_list | sort -t: -k 4 | while do_read
1542 do
1543     # First the predicate
1544     if class_is_predicate_p
1545     then
1546         if test -n "${macro}"
1547         then
1548             printf "#ifdef ${macro}_P\n"
1549             printf "  fprintf_unfiltered (file,\n"
1550             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1551             printf "                      \"${macro}_P()\",\n"
1552             printf "                      XSTRING (${macro}_P ()));\n"
1553             printf "#endif\n"
1554         fi
1555         printf "  fprintf_unfiltered (file,\n"
1556         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1557         printf "                      gdbarch_${function}_p (current_gdbarch));\n"
1558     fi
1559     # Print the macro definition.
1560     if test -n "${macro}"
1561     then
1562         printf "#ifdef ${macro}\n"
1563         if class_is_function_p
1564         then
1565             printf "  fprintf_unfiltered (file,\n"
1566             printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1567             printf "                      \"${macro}(${actual})\",\n"
1568             printf "                      XSTRING (${macro} (${actual})));\n"
1569         else
1570             printf "  fprintf_unfiltered (file,\n"
1571             printf "                      \"gdbarch_dump: ${macro} # %%s\\\\n\",\n"
1572             printf "                      XSTRING (${macro}));\n"
1573         fi
1574         printf "#endif\n"
1575     fi
1576     # Print the corresponding value.
1577     if class_is_function_p
1578     then
1579         printf "  fprintf_unfiltered (file,\n"
1580         printf "                      \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1581         printf "                      (long) current_gdbarch->${function});\n"
1582     else
1583         # It is a variable
1584         case "${print}:${returntype}" in
1585             :CORE_ADDR )
1586                 fmt="0x%s"
1587                 print="paddr_nz (current_gdbarch->${function})"
1588                 ;;
1589             :* )
1590                 fmt="%s"
1591                 print="paddr_d (current_gdbarch->${function})"
1592                 ;;
1593             * )
1594                 fmt="%s"
1595                 ;;
1596         esac
1597         printf "  fprintf_unfiltered (file,\n"
1598         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1599         printf "                      ${print});\n"
1600     fi
1601 done
1602 cat <<EOF
1603   if (current_gdbarch->dump_tdep != NULL)
1604     current_gdbarch->dump_tdep (current_gdbarch, file);
1605 }
1606 EOF
1607
1608
1609 # GET/SET
1610 printf "\n"
1611 cat <<EOF
1612 struct gdbarch_tdep *
1613 gdbarch_tdep (struct gdbarch *gdbarch)
1614 {
1615   if (gdbarch_debug >= 2)
1616     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1617   return gdbarch->tdep;
1618 }
1619 EOF
1620 printf "\n"
1621 function_list | while do_read
1622 do
1623     if class_is_predicate_p
1624     then
1625         printf "\n"
1626         printf "int\n"
1627         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1628         printf "{\n"
1629         printf "  gdb_assert (gdbarch != NULL);\n"
1630         printf "  return ${predicate};\n"
1631         printf "}\n"
1632     fi
1633     if class_is_function_p
1634     then
1635         printf "\n"
1636         printf "${returntype}\n"
1637         if [ "x${formal}" = "xvoid" ]
1638         then
1639           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1640         else
1641           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1642         fi
1643         printf "{\n"
1644         printf "  gdb_assert (gdbarch != NULL);\n"
1645         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1646         if class_is_predicate_p && test -n "${predefault}"
1647         then
1648             # Allow a call to a function with a predicate.
1649             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1650         fi
1651         printf "  if (gdbarch_debug >= 2)\n"
1652         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1653         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1654         then
1655             if class_is_multiarch_p
1656             then
1657                 params="gdbarch"
1658             else
1659                 params=""
1660             fi
1661         else
1662             if class_is_multiarch_p
1663             then
1664                 params="gdbarch, ${actual}"
1665             else
1666                 params="${actual}"
1667             fi
1668         fi
1669         if [ "x${returntype}" = "xvoid" ]
1670         then
1671           printf "  gdbarch->${function} (${params});\n"
1672         else
1673           printf "  return gdbarch->${function} (${params});\n"
1674         fi
1675         printf "}\n"
1676         printf "\n"
1677         printf "void\n"
1678         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1679         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1680         printf "{\n"
1681         printf "  gdbarch->${function} = ${function};\n"
1682         printf "}\n"
1683     elif class_is_variable_p
1684     then
1685         printf "\n"
1686         printf "${returntype}\n"
1687         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1688         printf "{\n"
1689         printf "  gdb_assert (gdbarch != NULL);\n"
1690         if [ "x${invalid_p}" = "x0" ]
1691         then
1692             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1693         elif [ -n "${invalid_p}" ]
1694         then
1695             printf "  /* Check variable is valid.  */\n"
1696             printf "  gdb_assert (!(${invalid_p}));\n"
1697         elif [ -n "${predefault}" ]
1698         then
1699             printf "  /* Check variable changed from pre-default.  */\n"
1700             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1701         fi
1702         printf "  if (gdbarch_debug >= 2)\n"
1703         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1704         printf "  return gdbarch->${function};\n"
1705         printf "}\n"
1706         printf "\n"
1707         printf "void\n"
1708         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1709         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1710         printf "{\n"
1711         printf "  gdbarch->${function} = ${function};\n"
1712         printf "}\n"
1713     elif class_is_info_p
1714     then
1715         printf "\n"
1716         printf "${returntype}\n"
1717         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1718         printf "{\n"
1719         printf "  gdb_assert (gdbarch != NULL);\n"
1720         printf "  if (gdbarch_debug >= 2)\n"
1721         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1722         printf "  return gdbarch->${function};\n"
1723         printf "}\n"
1724     fi
1725 done
1726
1727 # All the trailing guff
1728 cat <<EOF
1729
1730
1731 /* Keep a registry of per-architecture data-pointers required by GDB
1732    modules. */
1733
1734 struct gdbarch_data
1735 {
1736   unsigned index;
1737   int init_p;
1738   gdbarch_data_pre_init_ftype *pre_init;
1739   gdbarch_data_post_init_ftype *post_init;
1740 };
1741
1742 struct gdbarch_data_registration
1743 {
1744   struct gdbarch_data *data;
1745   struct gdbarch_data_registration *next;
1746 };
1747
1748 struct gdbarch_data_registry
1749 {
1750   unsigned nr;
1751   struct gdbarch_data_registration *registrations;
1752 };
1753
1754 struct gdbarch_data_registry gdbarch_data_registry =
1755 {
1756   0, NULL,
1757 };
1758
1759 static struct gdbarch_data *
1760 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1761                        gdbarch_data_post_init_ftype *post_init)
1762 {
1763   struct gdbarch_data_registration **curr;
1764   /* Append the new registraration.  */
1765   for (curr = &gdbarch_data_registry.registrations;
1766        (*curr) != NULL;
1767        curr = &(*curr)->next);
1768   (*curr) = XMALLOC (struct gdbarch_data_registration);
1769   (*curr)->next = NULL;
1770   (*curr)->data = XMALLOC (struct gdbarch_data);
1771   (*curr)->data->index = gdbarch_data_registry.nr++;
1772   (*curr)->data->pre_init = pre_init;
1773   (*curr)->data->post_init = post_init;
1774   (*curr)->data->init_p = 1;
1775   return (*curr)->data;
1776 }
1777
1778 struct gdbarch_data *
1779 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1780 {
1781   return gdbarch_data_register (pre_init, NULL);
1782 }
1783
1784 struct gdbarch_data *
1785 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1786 {
1787   return gdbarch_data_register (NULL, post_init);
1788 }
1789
1790 /* Create/delete the gdbarch data vector. */
1791
1792 static void
1793 alloc_gdbarch_data (struct gdbarch *gdbarch)
1794 {
1795   gdb_assert (gdbarch->data == NULL);
1796   gdbarch->nr_data = gdbarch_data_registry.nr;
1797   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1798 }
1799
1800 /* Initialize the current value of the specified per-architecture
1801    data-pointer. */
1802
1803 void
1804 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1805                              struct gdbarch_data *data,
1806                              void *pointer)
1807 {
1808   gdb_assert (data->index < gdbarch->nr_data);
1809   gdb_assert (gdbarch->data[data->index] == NULL);
1810   gdb_assert (data->pre_init == NULL);
1811   gdbarch->data[data->index] = pointer;
1812 }
1813
1814 /* Return the current value of the specified per-architecture
1815    data-pointer. */
1816
1817 void *
1818 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1819 {
1820   gdb_assert (data->index < gdbarch->nr_data);
1821   if (gdbarch->data[data->index] == NULL)
1822     {
1823       /* The data-pointer isn't initialized, call init() to get a
1824          value.  */
1825       if (data->pre_init != NULL)
1826         /* Mid architecture creation: pass just the obstack, and not
1827            the entire architecture, as that way it isn't possible for
1828            pre-init code to refer to undefined architecture
1829            fields.  */
1830         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1831       else if (gdbarch->initialized_p
1832                && data->post_init != NULL)
1833         /* Post architecture creation: pass the entire architecture
1834            (as all fields are valid), but be careful to also detect
1835            recursive references.  */
1836         {
1837           gdb_assert (data->init_p);
1838           data->init_p = 0;
1839           gdbarch->data[data->index] = data->post_init (gdbarch);
1840           data->init_p = 1;
1841         }
1842       else
1843         /* The architecture initialization hasn't completed - punt -
1844          hope that the caller knows what they are doing.  Once
1845          deprecated_set_gdbarch_data has been initialized, this can be
1846          changed to an internal error.  */
1847         return NULL;
1848       gdb_assert (gdbarch->data[data->index] != NULL);
1849     }
1850   return gdbarch->data[data->index];
1851 }
1852
1853
1854
1855 /* Keep a registry of swapped data required by GDB modules. */
1856
1857 struct gdbarch_swap
1858 {
1859   void *swap;
1860   struct gdbarch_swap_registration *source;
1861   struct gdbarch_swap *next;
1862 };
1863
1864 struct gdbarch_swap_registration
1865 {
1866   void *data;
1867   unsigned long sizeof_data;
1868   gdbarch_swap_ftype *init;
1869   struct gdbarch_swap_registration *next;
1870 };
1871
1872 struct gdbarch_swap_registry
1873 {
1874   int nr;
1875   struct gdbarch_swap_registration *registrations;
1876 };
1877
1878 struct gdbarch_swap_registry gdbarch_swap_registry =
1879 {
1880   0, NULL,
1881 };
1882
1883 void
1884 deprecated_register_gdbarch_swap (void *data,
1885                                   unsigned long sizeof_data,
1886                                   gdbarch_swap_ftype *init)
1887 {
1888   struct gdbarch_swap_registration **rego;
1889   for (rego = &gdbarch_swap_registry.registrations;
1890        (*rego) != NULL;
1891        rego = &(*rego)->next);
1892   (*rego) = XMALLOC (struct gdbarch_swap_registration);
1893   (*rego)->next = NULL;
1894   (*rego)->init = init;
1895   (*rego)->data = data;
1896   (*rego)->sizeof_data = sizeof_data;
1897 }
1898
1899 static void
1900 current_gdbarch_swap_init_hack (void)
1901 {
1902   struct gdbarch_swap_registration *rego;
1903   struct gdbarch_swap **curr = &current_gdbarch->swap;
1904   for (rego = gdbarch_swap_registry.registrations;
1905        rego != NULL;
1906        rego = rego->next)
1907     {
1908       if (rego->data != NULL)
1909         {
1910           (*curr) = GDBARCH_OBSTACK_ZALLOC (current_gdbarch,
1911                                             struct gdbarch_swap);
1912           (*curr)->source = rego;
1913           (*curr)->swap = gdbarch_obstack_zalloc (current_gdbarch,
1914                                                   rego->sizeof_data);
1915           (*curr)->next = NULL;
1916           curr = &(*curr)->next;
1917         }
1918       if (rego->init != NULL)
1919         rego->init ();
1920     }
1921 }
1922
1923 static struct gdbarch *
1924 current_gdbarch_swap_out_hack (void)
1925 {
1926   struct gdbarch *old_gdbarch = current_gdbarch;
1927   struct gdbarch_swap *curr;
1928
1929   gdb_assert (old_gdbarch != NULL);
1930   for (curr = old_gdbarch->swap;
1931        curr != NULL;
1932        curr = curr->next)
1933     {
1934       memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
1935       memset (curr->source->data, 0, curr->source->sizeof_data);
1936     }
1937   current_gdbarch = NULL;
1938   return old_gdbarch;
1939 }
1940
1941 static void
1942 current_gdbarch_swap_in_hack (struct gdbarch *new_gdbarch)
1943 {
1944   struct gdbarch_swap *curr;
1945
1946   gdb_assert (current_gdbarch == NULL);
1947   for (curr = new_gdbarch->swap;
1948        curr != NULL;
1949        curr = curr->next)
1950     memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
1951   current_gdbarch = new_gdbarch;
1952 }
1953
1954
1955 /* Keep a registry of the architectures known by GDB. */
1956
1957 struct gdbarch_registration
1958 {
1959   enum bfd_architecture bfd_architecture;
1960   gdbarch_init_ftype *init;
1961   gdbarch_dump_tdep_ftype *dump_tdep;
1962   struct gdbarch_list *arches;
1963   struct gdbarch_registration *next;
1964 };
1965
1966 static struct gdbarch_registration *gdbarch_registry = NULL;
1967
1968 static void
1969 append_name (const char ***buf, int *nr, const char *name)
1970 {
1971   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1972   (*buf)[*nr] = name;
1973   *nr += 1;
1974 }
1975
1976 const char **
1977 gdbarch_printable_names (void)
1978 {
1979   /* Accumulate a list of names based on the registed list of
1980      architectures. */
1981   enum bfd_architecture a;
1982   int nr_arches = 0;
1983   const char **arches = NULL;
1984   struct gdbarch_registration *rego;
1985   for (rego = gdbarch_registry;
1986        rego != NULL;
1987        rego = rego->next)
1988     {
1989       const struct bfd_arch_info *ap;
1990       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1991       if (ap == NULL)
1992         internal_error (__FILE__, __LINE__,
1993                         _("gdbarch_architecture_names: multi-arch unknown"));
1994       do
1995         {
1996           append_name (&arches, &nr_arches, ap->printable_name);
1997           ap = ap->next;
1998         }
1999       while (ap != NULL);
2000     }
2001   append_name (&arches, &nr_arches, NULL);
2002   return arches;
2003 }
2004
2005
2006 void
2007 gdbarch_register (enum bfd_architecture bfd_architecture,
2008                   gdbarch_init_ftype *init,
2009                   gdbarch_dump_tdep_ftype *dump_tdep)
2010 {
2011   struct gdbarch_registration **curr;
2012   const struct bfd_arch_info *bfd_arch_info;
2013   /* Check that BFD recognizes this architecture */
2014   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2015   if (bfd_arch_info == NULL)
2016     {
2017       internal_error (__FILE__, __LINE__,
2018                       _("gdbarch: Attempt to register unknown architecture (%d)"),
2019                       bfd_architecture);
2020     }
2021   /* Check that we haven't seen this architecture before */
2022   for (curr = &gdbarch_registry;
2023        (*curr) != NULL;
2024        curr = &(*curr)->next)
2025     {
2026       if (bfd_architecture == (*curr)->bfd_architecture)
2027         internal_error (__FILE__, __LINE__,
2028                         _("gdbarch: Duplicate registraration of architecture (%s)"),
2029                         bfd_arch_info->printable_name);
2030     }
2031   /* log it */
2032   if (gdbarch_debug)
2033     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
2034                         bfd_arch_info->printable_name,
2035                         (long) init);
2036   /* Append it */
2037   (*curr) = XMALLOC (struct gdbarch_registration);
2038   (*curr)->bfd_architecture = bfd_architecture;
2039   (*curr)->init = init;
2040   (*curr)->dump_tdep = dump_tdep;
2041   (*curr)->arches = NULL;
2042   (*curr)->next = NULL;
2043 }
2044
2045 void
2046 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2047                        gdbarch_init_ftype *init)
2048 {
2049   gdbarch_register (bfd_architecture, init, NULL);
2050 }
2051
2052
2053 /* Look for an architecture using gdbarch_info.  */
2054
2055 struct gdbarch_list *
2056 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2057                              const struct gdbarch_info *info)
2058 {
2059   for (; arches != NULL; arches = arches->next)
2060     {
2061       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2062         continue;
2063       if (info->byte_order != arches->gdbarch->byte_order)
2064         continue;
2065       if (info->osabi != arches->gdbarch->osabi)
2066         continue;
2067       if (info->target_desc != arches->gdbarch->target_desc)
2068         continue;
2069       return arches;
2070     }
2071   return NULL;
2072 }
2073
2074
2075 /* Find an architecture that matches the specified INFO.  Create a new
2076    architecture if needed.  Return that new architecture.  Assumes
2077    that there is no current architecture.  */
2078
2079 static struct gdbarch *
2080 find_arch_by_info (struct gdbarch_info info)
2081 {
2082   struct gdbarch *new_gdbarch;
2083   struct gdbarch_registration *rego;
2084
2085   /* The existing architecture has been swapped out - all this code
2086      works from a clean slate.  */
2087   gdb_assert (current_gdbarch == NULL);
2088
2089   /* Fill in missing parts of the INFO struct using a number of
2090      sources: "set ..."; INFOabfd supplied; and the global
2091      defaults.  */
2092   gdbarch_info_fill (&info);
2093
2094   /* Must have found some sort of architecture. */
2095   gdb_assert (info.bfd_arch_info != NULL);
2096
2097   if (gdbarch_debug)
2098     {
2099       fprintf_unfiltered (gdb_stdlog,
2100                           "find_arch_by_info: info.bfd_arch_info %s\n",
2101                           (info.bfd_arch_info != NULL
2102                            ? info.bfd_arch_info->printable_name
2103                            : "(null)"));
2104       fprintf_unfiltered (gdb_stdlog,
2105                           "find_arch_by_info: info.byte_order %d (%s)\n",
2106                           info.byte_order,
2107                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
2108                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2109                            : "default"));
2110       fprintf_unfiltered (gdb_stdlog,
2111                           "find_arch_by_info: info.osabi %d (%s)\n",
2112                           info.osabi, gdbarch_osabi_name (info.osabi));
2113       fprintf_unfiltered (gdb_stdlog,
2114                           "find_arch_by_info: info.abfd 0x%lx\n",
2115                           (long) info.abfd);
2116       fprintf_unfiltered (gdb_stdlog,
2117                           "find_arch_by_info: info.tdep_info 0x%lx\n",
2118                           (long) info.tdep_info);
2119     }
2120
2121   /* Find the tdep code that knows about this architecture.  */
2122   for (rego = gdbarch_registry;
2123        rego != NULL;
2124        rego = rego->next)
2125     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2126       break;
2127   if (rego == NULL)
2128     {
2129       if (gdbarch_debug)
2130         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2131                             "No matching architecture\n");
2132       return 0;
2133     }
2134
2135   /* Ask the tdep code for an architecture that matches "info".  */
2136   new_gdbarch = rego->init (info, rego->arches);
2137
2138   /* Did the tdep code like it?  No.  Reject the change and revert to
2139      the old architecture.  */
2140   if (new_gdbarch == NULL)
2141     {
2142       if (gdbarch_debug)
2143         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2144                             "Target rejected architecture\n");
2145       return NULL;
2146     }
2147
2148   /* Is this a pre-existing architecture (as determined by already
2149      being initialized)?  Move it to the front of the architecture
2150      list (keeping the list sorted Most Recently Used).  */
2151   if (new_gdbarch->initialized_p)
2152     {
2153       struct gdbarch_list **list;
2154       struct gdbarch_list *this;
2155       if (gdbarch_debug)
2156         fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2157                             "Previous architecture 0x%08lx (%s) selected\n",
2158                             (long) new_gdbarch,
2159                             new_gdbarch->bfd_arch_info->printable_name);
2160       /* Find the existing arch in the list.  */
2161       for (list = &rego->arches;
2162            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2163            list = &(*list)->next);
2164       /* It had better be in the list of architectures.  */
2165       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2166       /* Unlink THIS.  */
2167       this = (*list);
2168       (*list) = this->next;
2169       /* Insert THIS at the front.  */
2170       this->next = rego->arches;
2171       rego->arches = this;
2172       /* Return it.  */
2173       return new_gdbarch;
2174     }
2175
2176   /* It's a new architecture.  */
2177   if (gdbarch_debug)
2178     fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2179                         "New architecture 0x%08lx (%s) selected\n",
2180                         (long) new_gdbarch,
2181                         new_gdbarch->bfd_arch_info->printable_name);
2182
2183   /* Insert the new architecture into the front of the architecture
2184      list (keep the list sorted Most Recently Used).  */
2185   {
2186     struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2187     this->next = rego->arches;
2188     this->gdbarch = new_gdbarch;
2189     rego->arches = this;
2190   }
2191
2192   /* Check that the newly installed architecture is valid.  Plug in
2193      any post init values.  */
2194   new_gdbarch->dump_tdep = rego->dump_tdep;
2195   verify_gdbarch (new_gdbarch);
2196   new_gdbarch->initialized_p = 1;
2197
2198   /* Initialize any per-architecture swap areas.  This phase requires
2199      a valid global CURRENT_GDBARCH.  Set it momentarially, and then
2200      swap the entire architecture out.  */
2201   current_gdbarch = new_gdbarch;
2202   current_gdbarch_swap_init_hack ();
2203   current_gdbarch_swap_out_hack ();
2204
2205   if (gdbarch_debug)
2206     gdbarch_dump (new_gdbarch, gdb_stdlog);
2207
2208   return new_gdbarch;
2209 }
2210
2211 struct gdbarch *
2212 gdbarch_find_by_info (struct gdbarch_info info)
2213 {
2214   /* Save the previously selected architecture, setting the global to
2215      NULL.  This stops things like gdbarch->init() trying to use the
2216      previous architecture's configuration.  The previous architecture
2217      may not even be of the same architecture family.  The most recent
2218      architecture of the same family is found at the head of the
2219      rego->arches list.  */
2220   struct gdbarch *old_gdbarch = current_gdbarch_swap_out_hack ();
2221
2222   /* Find the specified architecture.  */
2223   struct gdbarch *new_gdbarch = find_arch_by_info (info);
2224
2225   /* Restore the existing architecture.  */
2226   gdb_assert (current_gdbarch == NULL);
2227   current_gdbarch_swap_in_hack (old_gdbarch);
2228
2229   return new_gdbarch;
2230 }
2231
2232 /* Make the specified architecture current, swapping the existing one
2233    out.  */
2234
2235 void
2236 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2237 {
2238   gdb_assert (new_gdbarch != NULL);
2239   gdb_assert (current_gdbarch != NULL);
2240   gdb_assert (new_gdbarch->initialized_p);
2241   current_gdbarch_swap_out_hack ();
2242   current_gdbarch_swap_in_hack (new_gdbarch);
2243   architecture_changed_event ();
2244   reinit_frame_cache ();
2245 }
2246
2247 extern void _initialize_gdbarch (void);
2248
2249 void
2250 _initialize_gdbarch (void)
2251 {
2252   struct cmd_list_element *c;
2253
2254   add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2255 Set architecture debugging."), _("\\
2256 Show architecture debugging."), _("\\
2257 When non-zero, architecture debugging is enabled."),
2258                             NULL,
2259                             show_gdbarch_debug,
2260                             &setdebuglist, &showdebuglist);
2261 }
2262 EOF
2263
2264 # close things off
2265 exec 1>&2
2266 #../move-if-change new-gdbarch.c gdbarch.c
2267 compare_new gdbarch.c