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 # 2008, 2009, 2010 Free Software Foundation, Inc.
   7 #
   8 # This file is part of GDB.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 # Make certain that the script is not running in an internationalized
  24 # environment.
  25 LANG=C ; export LANG
  26 LC_ALL=C ; export LC_ALL
  27
  28
  29 compare_new ()
  30 {
  31     file=$1
  32     if test ! -r ${file}
  33     then
  34         echo "${file} missing? cp new-${file} ${file}" 1>&2
  35     elif diff -u ${file} new-${file}
  36     then
  37         echo "${file} unchanged" 1>&2
  38     else
  39         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  40     fi
  41 }
  42
  43
  44 # Format of the input table
  45 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
  46
  47 do_read ()
  48 {
  49     comment=""
  50     class=""
  51     while read line
  52     do
  53         if test "${line}" = ""
  54         then
  55             continue
  56         elif test "${line}" = "#" -a "${comment}" = ""
  57         then
  58             continue
  59         elif expr "${line}" : "#" > /dev/null
  60         then
  61             comment="${comment}
  62 ${line}"
  63         else
  64
  65             # The semantics of IFS varies between different SH's.  Some
  66             # treat ``::' as three fields while some treat it as just too.
  67             # Work around this by eliminating ``::'' ....
  68             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  69
  70             OFS="${IFS}" ; IFS="[:]"
  71             eval read ${read} <<EOF
  72 ${line}
  73 EOF
  74             IFS="${OFS}"
  75
  76             if test -n "${garbage_at_eol}"
  77             then
  78                 echo "Garbage at end-of-line in ${line}" 1>&2
  79                 kill $$
  80                 exit 1
  81             fi
  82
  83             # .... and then going back through each field and strip out those
  84             # that ended up with just that space character.
  85             for r in ${read}
  86             do
  87                 if eval test \"\${${r}}\" = \"\ \"
  88                 then
  89                     eval ${r}=""
  90                 fi
  91             done
  92
  93             case "${class}" in
  94                 m ) staticdefault="${predefault}" ;;
  95                 M ) staticdefault="0" ;;
  96                 * ) test "${staticdefault}" || staticdefault=0 ;;
  97             esac
  98
  99             case "${class}" in
 100             F | V | M )
 101                 case "${invalid_p}" in
 102                 "" )
 103                     if test -n "${predefault}"
 104                     then
 105                         #invalid_p="gdbarch->${function} == ${predefault}"
 106                         predicate="gdbarch->${function} != ${predefault}"
 107                     elif class_is_variable_p
 108                     then
 109                         predicate="gdbarch->${function} != 0"
 110                     elif class_is_function_p
 111                     then
 112                         predicate="gdbarch->${function} != NULL"
 113                     fi
 114                     ;;
 115                 * )
 116                     echo "Predicate function ${function} with invalid_p." 1>&2
 117                     kill $$
 118                     exit 1
 119                     ;;
 120                 esac
 121             esac
 122
 123             # PREDEFAULT is a valid fallback definition of MEMBER when
 124             # multi-arch is not enabled.  This ensures that the
 125             # default value, when multi-arch is the same as the
 126             # default value when not multi-arch.  POSTDEFAULT is
 127             # always a valid definition of MEMBER as this again
 128             # ensures consistency.
 129
 130             if [ -n "${postdefault}" ]
 131             then
 132                 fallbackdefault="${postdefault}"
 133             elif [ -n "${predefault}" ]
 134             then
 135                 fallbackdefault="${predefault}"
 136             else
 137                 fallbackdefault="0"
 138             fi
 139
 140             #NOT YET: See gdbarch.log for basic verification of
 141             # database
 142
 143             break
 144         fi
 145     done
 146     if [ -n "${class}" ]
 147     then
 148         true
 149     else
 150         false
 151     fi
 152 }
 153
 154
 155 fallback_default_p ()
 156 {
 157     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 158         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 159 }
 160
 161 class_is_variable_p ()
 162 {
 163     case "${class}" in
 164         *v* | *V* ) true ;;
 165         * ) false ;;
 166     esac
 167 }
 168
 169 class_is_function_p ()
 170 {
 171     case "${class}" in
 172         *f* | *F* | *m* | *M* ) true ;;
 173         * ) false ;;
 174     esac
 175 }
 176
 177 class_is_multiarch_p ()
 178 {
 179     case "${class}" in
 180         *m* | *M* ) true ;;
 181         * ) false ;;
 182     esac
 183 }
 184
 185 class_is_predicate_p ()
 186 {
 187     case "${class}" in
 188         *F* | *V* | *M* ) true ;;
 189         * ) false ;;
 190     esac
 191 }
 192
 193 class_is_info_p ()
 194 {
 195     case "${class}" in
 196         *i* ) true ;;
 197         * ) false ;;
 198     esac
 199 }
 200
 201
 202 # dump out/verify the doco
 203 for field in ${read}
 204 do
 205   case ${field} in
 206
 207     class ) : ;;
 208
 209         # # -> line disable
 210         # f -> function
 211         #   hiding a function
 212         # F -> function + predicate
 213         #   hiding a function + predicate to test function validity
 214         # v -> variable
 215         #   hiding a variable
 216         # V -> variable + predicate
 217         #   hiding a variable + predicate to test variables validity
 218         # i -> set from info
 219         #   hiding something from the ``struct info'' object
 220         # m -> multi-arch function
 221         #   hiding a multi-arch function (parameterised with the architecture)
 222         # M -> multi-arch function + predicate
 223         #   hiding a multi-arch function + predicate to test function validity
 224
 225     returntype ) : ;;
 226
 227         # For functions, the return type; for variables, the data type
 228
 229     function ) : ;;
 230
 231         # For functions, the member function name; for variables, the
 232         # variable name.  Member function names are always prefixed with
 233         # ``gdbarch_'' for name-space purity.
 234
 235     formal ) : ;;
 236
 237         # The formal argument list.  It is assumed that the formal
 238         # argument list includes the actual name of each list element.
 239         # A function with no arguments shall have ``void'' as the
 240         # formal argument list.
 241
 242     actual ) : ;;
 243
 244         # The list of actual arguments.  The arguments specified shall
 245         # match the FORMAL list given above.  Functions with out
 246         # arguments leave this blank.
 247
 248     staticdefault ) : ;;
 249
 250         # To help with the GDB startup a static gdbarch object is
 251         # created.  STATICDEFAULT is the value to insert into that
 252         # static gdbarch object.  Since this a static object only
 253         # simple expressions can be used.
 254
 255         # If STATICDEFAULT is empty, zero is used.
 256
 257     predefault ) : ;;
 258
 259         # An initial value to assign to MEMBER of the freshly
 260         # malloc()ed gdbarch object.  After initialization, the
 261         # freshly malloc()ed object is passed to the target
 262         # architecture code for further updates.
 263
 264         # If PREDEFAULT is empty, zero is used.
 265
 266         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 267         # INVALID_P are specified, PREDEFAULT will be used as the
 268         # default for the non- multi-arch target.
 269
 270         # A zero PREDEFAULT function will force the fallback to call
 271         # internal_error().
 272
 273         # Variable declarations can refer to ``gdbarch'' which will
 274         # contain the current architecture.  Care should be taken.
 275
 276     postdefault ) : ;;
 277
 278         # A value to assign to MEMBER of the new gdbarch object should
 279         # the target architecture code fail to change the PREDEFAULT
 280         # value.
 281
 282         # If POSTDEFAULT is empty, no post update is performed.
 283
 284         # If both INVALID_P and POSTDEFAULT are non-empty then
 285         # INVALID_P will be used to determine if MEMBER should be
 286         # changed to POSTDEFAULT.
 287
 288         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 289         # specified, POSTDEFAULT will be used as the default for the
 290         # non- multi-arch target (regardless of the value of
 291         # PREDEFAULT).
 292
 293         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 294
 295         # Variable declarations can refer to ``gdbarch'' which
 296         # will contain the current architecture.  Care should be
 297         # taken.
 298
 299     invalid_p ) : ;;
 300
 301         # A predicate equation that validates MEMBER.  Non-zero is
 302         # returned if the code creating the new architecture failed to
 303         # initialize MEMBER or the initialized the member is invalid.
 304         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 305         # that value.  If POSTDEFAULT is empty then internal_error()
 306         # is called.
 307
 308         # If INVALID_P is empty, a check that MEMBER is no longer
 309         # equal to PREDEFAULT is used.
 310
 311         # The expression ``0'' disables the INVALID_P check making
 312         # PREDEFAULT a legitimate value.
 313
 314         # See also PREDEFAULT and POSTDEFAULT.
 315
 316     print ) : ;;
 317
 318         # An optional expression that convers MEMBER to a value
 319         # suitable for formatting using %s.
 320
 321         # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
 322         # or plongest (anything else) is used.
 323
 324     garbage_at_eol ) : ;;
 325
 326         # Catches stray fields.
 327
 328     *)
 329         echo "Bad field ${field}"
 330         exit 1;;
 331   esac
 332 done
 333
 334
 335 function_list ()
 336 {
 337   # See below (DOCO) for description of each field
 338   cat <<EOF
 339 i:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (gdbarch)->printable_name
 340 #
 341 i:int:byte_order:::BFD_ENDIAN_BIG
 342 i:int:byte_order_for_code:::BFD_ENDIAN_BIG
 343 #
 344 i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
 345 #
 346 i:const struct target_desc *:target_desc:::::::host_address_to_string (gdbarch->target_desc)
 347
 348 # The bit byte-order has to do just with numbering of bits in debugging symbols
 349 # and such.  Conceptually, it's quite separate from byte/word byte order.
 350 v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
 351
 352 # Number of bits in a char or unsigned char for the target machine.
 353 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 354 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 355 #
 356 # Number of bits in a short or unsigned short for the target machine.
 357 v:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 358 # Number of bits in an int or unsigned int for the target machine.
 359 v:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 360 # Number of bits in a long or unsigned long for the target machine.
 361 v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 362 # Number of bits in a long long or unsigned long long for the target
 363 # machine.
 364 v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
 365
 366 # The ABI default bit-size and format for "float", "double", and "long
 367 # double".  These bit/format pairs should eventually be combined into
 368 # a single object.  For the moment, just initialize them as a pair.
 369 # Each format describes both the big and little endian layouts (if
 370 # useful).
 371
 372 v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 373 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format)
 374 v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 375 v:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (gdbarch->double_format)
 376 v:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
 377 v:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (gdbarch->long_double_format)
 378
 379 # For most targets, a pointer on the target and its representation as an
 380 # address in GDB have the same size and "look the same".  For such a
 381 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
 382 # / addr_bit will be set from it.
 383 #
 384 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
 385 # also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
 386 # as well.
 387 #
 388 # ptr_bit is the size of a pointer on the target
 389 v:int:ptr_bit:::8 * sizeof (void*):gdbarch->int_bit::0
 390 # addr_bit is the size of a target address as represented in gdb
 391 v:int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (gdbarch):
 392 #
 393 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 394 v:int:char_signed:::1:-1:1
 395 #
 396 F:CORE_ADDR:read_pc:struct regcache *regcache:regcache
 397 F:void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
 398 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 399 # whole scheme for dealing with "frames" and "frame pointers" needs a
 400 # serious shakedown.
 401 m:void:virtual_frame_pointer:CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset:pc, frame_regnum, frame_offset:0:legacy_virtual_frame_pointer::0
 402 #
 403 M:void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
 404 M:void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
 405 #
 406 v:int:num_regs:::0:-1
 407 # This macro gives the number of pseudo-registers that live in the
 408 # register namespace but do not get fetched or stored on the target.
 409 # These pseudo-registers may be aliases for other registers,
 410 # combinations of other registers, or they may be computed by GDB.
 411 v:int:num_pseudo_regs:::0:0::0
 412
 413 # GDB's standard (or well known) register numbers.  These can map onto
 414 # a real register or a pseudo (computed) register or not be defined at
 415 # all (-1).
 416 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
 417 v:int:sp_regnum:::-1:-1::0
 418 v:int:pc_regnum:::-1:-1::0
 419 v:int:ps_regnum:::-1:-1::0
 420 v:int:fp0_regnum:::0:-1::0
 421 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
 422 m:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
 423 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
 424 m:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
 425 # Convert from an sdb register number to an internal gdb register number.
 426 m:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
 427 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
 428 m:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
 429 m:const char *:register_name:int regnr:regnr::0
 430
 431 # Return the type of a register specified by the architecture.  Only
 432 # the register cache should call this function directly; others should
 433 # use "register_type".
 434 M:struct type *:register_type:int reg_nr:reg_nr
 435
 436 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
 437 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
 438 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
 439 # deprecated_fp_regnum.
 440 v:int:deprecated_fp_regnum:::-1:-1::0
 441
 442 # See gdbint.texinfo.  See infcall.c.
 443 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
 444 v:int:call_dummy_location::::AT_ENTRY_POINT::0
 445 M:CORE_ADDR:push_dummy_code:CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache:sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache
 446
 447 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
 448 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 449 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
 450 # MAP a GDB RAW register number onto a simulator register number.  See
 451 # also include/...-sim.h.
 452 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
 453 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
 454 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
 455 # setjmp/longjmp support.
 456 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
 457 #
 458 v:int:believe_pcc_promotion:::::::
 459 #
 460 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
 461 f:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
 462 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
 463 # Construct a value representing the contents of register REGNUM in
 464 # frame FRAME, interpreted as type TYPE.  The routine needs to
 465 # allocate and return a struct value with all value attributes
 466 # (but not the value contents) filled in.
 467 f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
 468 #
 469 m:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
 470 m:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
 471 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
 472
 473 # Return the return-value convention that will be used by FUNCTYPE
 474 # to return a value of type VALTYPE.  FUNCTYPE may be NULL in which
 475 # case the return convention is computed based only on VALTYPE.
 476 #
 477 # If READBUF is not NULL, extract the return value and save it in this buffer.
 478 #
 479 # If WRITEBUF is not NULL, it contains a return value which will be
 480 # stored into the appropriate register.  This can be used when we want
 481 # to force the value returned by a function (see the "return" command
 482 # for instance).
 483 M:enum return_value_convention:return_value:struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:functype, valtype, regcache, readbuf, writebuf
 484
 485 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
 486 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
 487 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
 488 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
 489 # Return the adjusted address and kind to use for Z0/Z1 packets.
 490 # KIND is usually the memory length of the breakpoint, but may have a
 491 # different target-specific meaning.
 492 m:void:remote_breakpoint_from_pc:CORE_ADDR *pcptr, int *kindptr:pcptr, kindptr:0:default_remote_breakpoint_from_pc::0
 493 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
 494 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
 495 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
 496 v:CORE_ADDR:decr_pc_after_break:::0:::0
 497
 498 # A function can be addressed by either it's "pointer" (possibly a
 499 # descriptor address) or "entry point" (first executable instruction).
 500 # The method "convert_from_func_ptr_addr" converting the former to the
 501 # latter.  gdbarch_deprecated_function_start_offset is being used to implement
 502 # a simplified subset of that functionality - the function's address
 503 # corresponds to the "function pointer" and the function's start
 504 # corresponds to the "function entry point" - and hence is redundant.
 505
 506 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
 507
 508 # Return the remote protocol register number associated with this
 509 # register.  Normally the identity mapping.
 510 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
 511
 512 # Fetch the target specific address used to represent a load module.
 513 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
 514 #
 515 v:CORE_ADDR:frame_args_skip:::0:::0
 516 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
 517 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
 518 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
 519 # frame-base.  Enable frame-base before frame-unwind.
 520 F:int:frame_num_args:struct frame_info *frame:frame
 521 #
 522 M:CORE_ADDR:frame_align:CORE_ADDR address:address
 523 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
 524 v:int:frame_red_zone_size
 525 #
 526 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
 527 # On some machines there are bits in addresses which are not really
 528 # part of the address, but are used by the kernel, the hardware, etc.
 529 # for special purposes.  gdbarch_addr_bits_remove takes out any such bits so
 530 # we get a "real" address such as one would find in a symbol table.
 531 # This is used only for addresses of instructions, and even then I'm
 532 # not sure it's used in all contexts.  It exists to deal with there
 533 # being a few stray bits in the PC which would mislead us, not as some
 534 # sort of generic thing to handle alignment or segmentation (it's
 535 # possible it should be in TARGET_READ_PC instead).
 536 m:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
 537 # It is not at all clear why gdbarch_smash_text_address is not folded into
 538 # gdbarch_addr_bits_remove.
 539 m:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
 540
 541 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that
 542 # indicates if the target needs software single step.  An ISA method to
 543 # implement it.
 544 #
 545 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
 546 # breakpoints using the breakpoint system instead of blatting memory directly
 547 # (as with rs6000).
 548 #
 549 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the
 550 # target can single step.  If not, then implement single step using breakpoints.
 551 #
 552 # A return value of 1 means that the software_single_step breakpoints
 553 # were inserted; 0 means they were not.
 554 F:int:software_single_step:struct frame_info *frame:frame
 555
 556 # Return non-zero if the processor is executing a delay slot and a
 557 # further single-step is needed before the instruction finishes.
 558 M:int:single_step_through_delay:struct frame_info *frame:frame
 559 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
 560 # disassembler.  Perhaps objdump can handle it?
 561 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
 562 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
 563
 564
 565 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
 566 # evaluates non-zero, this is the address where the debugger will place
 567 # a step-resume breakpoint to get us past the dynamic linker.
 568 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
 569 # Some systems also have trampoline code for returning from shared libs.
 570 m:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
 571
 572 # A target might have problems with watchpoints as soon as the stack
 573 # frame of the current function has been destroyed.  This mostly happens
 574 # as the first action in a funtion's epilogue.  in_function_epilogue_p()
 575 # is defined to return a non-zero value if either the given addr is one
 576 # instruction after the stack destroying instruction up to the trailing
 577 # return instruction or if we can figure out that the stack frame has
 578 # already been invalidated regardless of the value of addr.  Targets
 579 # which don't suffer from that problem could just let this functionality
 580 # untouched.
 581 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
 582 f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
 583 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
 584 v:int:cannot_step_breakpoint:::0:0::0
 585 v:int:have_nonsteppable_watchpoint:::0:0::0
 586 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
 587 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
 588 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
 589 # Is a register in a group
 590 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
 591 # Fetch the pointer to the ith function argument.
 592 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
 593
 594 # Return the appropriate register set for a core file section with
 595 # name SECT_NAME and size SECT_SIZE.
 596 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
 597
 598 # When creating core dumps, some systems encode the PID in addition
 599 # to the LWP id in core file register section names.  In those cases, the
 600 # "XXX" in ".reg/XXX" is encoded as [LWPID << 16 | PID].  This setting
 601 # is set to true for such architectures; false if "XXX" represents an LWP
 602 # or thread id with no special encoding.
 603 v:int:core_reg_section_encodes_pid:::0:0::0
 604
 605 # Supported register notes in a core file.
 606 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
 607
 608 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
 609 # core file into buffer READBUF with length LEN.
 610 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
 611
 612 # How the core_stratum layer converts a PTID from a core file to a
 613 # string.
 614 M:char *:core_pid_to_str:ptid_t ptid:ptid
 615
 616 # BFD target to use when generating a core file.
 617 V:const char *:gcore_bfd_target:::0:0:::gdbarch->gcore_bfd_target
 618
 619 # If the elements of C++ vtables are in-place function descriptors rather
 620 # than normal function pointers (which may point to code or a descriptor),
 621 # set this to one.
 622 v:int:vtable_function_descriptors:::0:0::0
 623
 624 # Set if the least significant bit of the delta is used instead of the least
 625 # significant bit of the pfn for pointers to virtual member functions.
 626 v:int:vbit_in_delta:::0:0::0
 627
 628 # Advance PC to next instruction in order to skip a permanent breakpoint.
 629 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
 630
 631 # The maximum length of an instruction on this architecture.
 632 V:ULONGEST:max_insn_length:::0:0
 633
 634 # Copy the instruction at FROM to TO, and make any adjustments
 635 # necessary to single-step it at that address.
 636 #
 637 # REGS holds the state the thread's registers will have before
 638 # executing the copied instruction; the PC in REGS will refer to FROM,
 639 # not the copy at TO.  The caller should update it to point at TO later.
 640 #
 641 # Return a pointer to data of the architecture's choice to be passed
 642 # to gdbarch_displaced_step_fixup.  Or, return NULL to indicate that
 643 # the instruction's effects have been completely simulated, with the
 644 # resulting state written back to REGS.
 645 #
 646 # For a general explanation of displaced stepping and how GDB uses it,
 647 # see the comments in infrun.c.
 648 #
 649 # The TO area is only guaranteed to have space for
 650 # gdbarch_max_insn_length (arch) bytes, so this function must not
 651 # write more bytes than that to that area.
 652 #
 653 # If you do not provide this function, GDB assumes that the
 654 # architecture does not support displaced stepping.
 655 #
 656 # If your architecture doesn't need to adjust instructions before
 657 # single-stepping them, consider using simple_displaced_step_copy_insn
 658 # here.
 659 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
 660
 661 # Return true if GDB should use hardware single-stepping to execute
 662 # the displaced instruction identified by CLOSURE.  If false,
 663 # GDB will simply restart execution at the displaced instruction
 664 # location, and it is up to the target to ensure GDB will receive
 665 # control again (e.g. by placing a software breakpoint instruction
 666 # into the displaced instruction buffer).
 667 #
 668 # The default implementation returns false on all targets that
 669 # provide a gdbarch_software_single_step routine, and true otherwise.
 670 m:int:displaced_step_hw_singlestep:struct displaced_step_closure *closure:closure::default_displaced_step_hw_singlestep::0
 671
 672 # Fix up the state resulting from successfully single-stepping a
 673 # displaced instruction, to give the result we would have gotten from
 674 # stepping the instruction in its original location.
 675 #
 676 # REGS is the register state resulting from single-stepping the
 677 # displaced instruction.
 678 #
 679 # CLOSURE is the result from the matching call to
 680 # gdbarch_displaced_step_copy_insn.
 681 #
 682 # If you provide gdbarch_displaced_step_copy_insn.but not this
 683 # function, then GDB assumes that no fixup is needed after
 684 # single-stepping the instruction.
 685 #
 686 # For a general explanation of displaced stepping and how GDB uses it,
 687 # see the comments in infrun.c.
 688 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
 689
 690 # Free a closure returned by gdbarch_displaced_step_copy_insn.
 691 #
 692 # If you provide gdbarch_displaced_step_copy_insn, you must provide
 693 # this function as well.
 694 #
 695 # If your architecture uses closures that don't need to be freed, then
 696 # you can use simple_displaced_step_free_closure here.
 697 #
 698 # For a general explanation of displaced stepping and how GDB uses it,
 699 # see the comments in infrun.c.
 700 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
 701
 702 # Return the address of an appropriate place to put displaced
 703 # instructions while we step over them.  There need only be one such
 704 # place, since we're only stepping one thread over a breakpoint at a
 705 # time.
 706 #
 707 # For a general explanation of displaced stepping and how GDB uses it,
 708 # see the comments in infrun.c.
 709 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
 710
 711 # Refresh overlay mapped state for section OSECT.
 712 F:void:overlay_update:struct obj_section *osect:osect
 713
 714 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
 715
 716 # Handle special encoding of static variables in stabs debug info.
 717 F:char *:static_transform_name:char *name:name
 718 # Set if the address in N_SO or N_FUN stabs may be zero.
 719 v:int:sofun_address_maybe_missing:::0:0::0
 720
 721 # Parse the instruction at ADDR storing in the record execution log
 722 # the registers REGCACHE and memory ranges that will be affected when
 723 # the instruction executes, along with their current values.
 724 # Return -1 if something goes wrong, 0 otherwise.
 725 M:int:process_record:struct regcache *regcache, CORE_ADDR addr:regcache, addr
 726
 727 # Save process state after a signal.
 728 # Return -1 if something goes wrong, 0 otherwise.
 729 M:int:process_record_signal:struct regcache *regcache, enum target_signal signal:regcache, signal
 730
 731 # Signal translation: translate inferior's signal (host's) number into
 732 # GDB's representation.
 733 m:enum target_signal:target_signal_from_host:int signo:signo::default_target_signal_from_host::0
 734 # Signal translation: translate GDB's signal number into inferior's host
 735 # signal number.
 736 m:int:target_signal_to_host:enum target_signal ts:ts::default_target_signal_to_host::0
 737
 738 # Extra signal info inspection.
 739 #
 740 # Return a type suitable to inspect extra signal information.
 741 M:struct type *:get_siginfo_type:void:
 742
 743 # Record architecture-specific information from the symbol table.
 744 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
 745
 746 # Function for the 'catch syscall' feature.
 747
 748 # Get architecture-specific system calls information from registers.
 749 M:LONGEST:get_syscall_number:ptid_t ptid:ptid
 750
 751 # True if the list of shared libraries is one and only for all
 752 # processes, as opposed to a list of shared libraries per inferior.
 753 # This usually means that all processes, although may or may not share
 754 # an address space, will see the same set of symbols at the same
 755 # addresses.
 756 v:int:has_global_solist:::0:0::0
 757
 758 # On some targets, even though each inferior has its own private
 759 # address space, the debug interface takes care of making breakpoints
 760 # visible to all address spaces automatically.  For such cases,
 761 # this property should be set to true.
 762 v:int:has_global_breakpoints:::0:0::0
 763
 764 # True if inferiors share an address space (e.g., uClinux).
 765 m:int:has_shared_address_space:void:::default_has_shared_address_space::0
 766
 767 # True if a fast tracepoint can be set at an address.
 768 m:int:fast_tracepoint_valid_at:CORE_ADDR addr, int *isize, char **msg:addr, isize, msg::default_fast_tracepoint_valid_at::0
 769
 770 # Return the "auto" target charset.
 771 f:const char *:auto_charset:void::default_auto_charset:default_auto_charset::0
 772 # Return the "auto" target wide charset.
 773 f:const char *:auto_wide_charset:void::default_auto_wide_charset:default_auto_wide_charset::0
 774
 775 # If non-empty, this is a file extension that will be opened in place
 776 # of the file extension reported by the shared library list.
 777 #
 778 # This is most useful for toolchains that use a post-linker tool,
 779 # where the names of the files run on the target differ in extension
 780 # compared to the names of the files GDB should load for debug info.
 781 v:const char *:solib_symbols_extension:::::::pstring (gdbarch->solib_symbols_extension)
 782
 783 # If true, the target OS has DOS-based file system semantics.  That
 784 # is, absolute paths include a drive name, and the backslash is
 785 # considered a directory separator.
 786 v:int:has_dos_based_file_system:::0:0::0
 787 EOF
 788 }
 789
 790 #
 791 # The .log file
 792 #
 793 exec > new-gdbarch.log
 794 function_list | while do_read
 795 do
 796     cat <<EOF
 797 ${class} ${returntype} ${function} ($formal)
 798 EOF
 799     for r in ${read}
 800     do
 801         eval echo \"\ \ \ \ ${r}=\${${r}}\"
 802     done
 803     if class_is_predicate_p && fallback_default_p
 804     then
 805         echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
 806         kill $$
 807         exit 1
 808     fi
 809     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
 810     then
 811         echo "Error: postdefault is useless when invalid_p=0" 1>&2
 812         kill $$
 813         exit 1
 814     fi
 815     if class_is_multiarch_p
 816     then
 817         if class_is_predicate_p ; then :
 818         elif test "x${predefault}" = "x"
 819         then
 820             echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
 821             kill $$
 822             exit 1
 823         fi
 824     fi
 825     echo ""
 826 done
 827
 828 exec 1>&2
 829 compare_new gdbarch.log
 830
 831
 832 copyright ()
 833 {
 834 cat <<EOF
 835 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
 836
 837 /* Dynamic architecture support for GDB, the GNU debugger.
 838
 839    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
 840    2007, 2008, 2009 Free Software Foundation, Inc.
 841
 842    This file is part of GDB.
 843
 844    This program is free software; you can redistribute it and/or modify
 845    it under the terms of the GNU General Public License as published by
 846    the Free Software Foundation; either version 3 of the License, or
 847    (at your option) any later version.
 848
 849    This program is distributed in the hope that it will be useful,
 850    but WITHOUT ANY WARRANTY; without even the implied warranty of
 851    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 852    GNU General Public License for more details.
 853
 854    You should have received a copy of the GNU General Public License
 855    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 856
 857 /* This file was created with the aid of \`\`gdbarch.sh''.
 858
 859    The Bourne shell script \`\`gdbarch.sh'' creates the files
 860    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
 861    against the existing \`\`gdbarch.[hc]''.  Any differences found
 862    being reported.
 863
 864    If editing this file, please also run gdbarch.sh and merge any
 865    changes into that script. Conversely, when making sweeping changes
 866    to this file, modifying gdbarch.sh and using its output may prove
 867    easier. */
 868
 869 EOF
 870 }
 871
 872 #
 873 # The .h file
 874 #
 875
 876 exec > new-gdbarch.h
 877 copyright
 878 cat <<EOF
 879 #ifndef GDBARCH_H
 880 #define GDBARCH_H
 881
 882 struct floatformat;
 883 struct ui_file;
 884 struct frame_info;
 885 struct value;
 886 struct objfile;
 887 struct obj_section;
 888 struct minimal_symbol;
 889 struct regcache;
 890 struct reggroup;
 891 struct regset;
 892 struct disassemble_info;
 893 struct target_ops;
 894 struct obstack;
 895 struct bp_target_info;
 896 struct target_desc;
 897 struct displaced_step_closure;
 898 struct core_regset_section;
 899 struct syscall;
 900
 901 /* The architecture associated with the connection to the target.
 902
 903    The architecture vector provides some information that is really
 904    a property of the target: The layout of certain packets, for instance;
 905    or the solib_ops vector.  Etc.  To differentiate architecture accesses
 906    to per-target properties from per-thread/per-frame/per-objfile properties,
 907    accesses to per-target properties should be made through target_gdbarch.
 908
 909    Eventually, when support for multiple targets is implemented in
 910    GDB, this global should be made target-specific.  */
 911 extern struct gdbarch *target_gdbarch;
 912 EOF
 913
 914 # function typedef's
 915 printf "\n"
 916 printf "\n"
 917 printf "/* The following are pre-initialized by GDBARCH. */\n"
 918 function_list | while do_read
 919 do
 920     if class_is_info_p
 921     then
 922         printf "\n"
 923         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 924         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
 925     fi
 926 done
 927
 928 # function typedef's
 929 printf "\n"
 930 printf "\n"
 931 printf "/* The following are initialized by the target dependent code. */\n"
 932 function_list | while do_read
 933 do
 934     if [ -n "${comment}" ]
 935     then
 936         echo "${comment}" | sed \
 937             -e '2 s,#,/*,' \
 938             -e '3,$ s,#,  ,' \
 939             -e '$ s,$, */,'
 940     fi
 941
 942     if class_is_predicate_p
 943     then
 944         printf "\n"
 945         printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 946     fi
 947     if class_is_variable_p
 948     then
 949         printf "\n"
 950         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 951         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
 952     fi
 953     if class_is_function_p
 954     then
 955         printf "\n"
 956         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
 957         then
 958             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
 959         elif class_is_multiarch_p
 960         then
 961             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
 962         else
 963             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
 964         fi
 965         if [ "x${formal}" = "xvoid" ]
 966         then
 967           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 968         else
 969           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
 970         fi
 971         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
 972     fi
 973 done
 974
 975 # close it off
 976 cat <<EOF
 977
 978 /* Definition for an unknown syscall, used basically in error-cases.  */
 979 #define UNKNOWN_SYSCALL (-1)
 980
 981 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 982
 983
 984 /* Mechanism for co-ordinating the selection of a specific
 985    architecture.
 986
 987    GDB targets (*-tdep.c) can register an interest in a specific
 988    architecture.  Other GDB components can register a need to maintain
 989    per-architecture data.
 990
 991    The mechanisms below ensures that there is only a loose connection
 992    between the set-architecture command and the various GDB
 993    components.  Each component can independently register their need
 994    to maintain architecture specific data with gdbarch.
 995
 996    Pragmatics:
 997
 998    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 999    didn't scale.
1000
1001    The more traditional mega-struct containing architecture specific
1002    data for all the various GDB components was also considered.  Since
1003    GDB is built from a variable number of (fairly independent)
1004    components it was determined that the global aproach was not
1005    applicable. */
1006
1007
1008 /* Register a new architectural family with GDB.
1009
1010    Register support for the specified ARCHITECTURE with GDB.  When
1011    gdbarch determines that the specified architecture has been
1012    selected, the corresponding INIT function is called.
1013
1014    --
1015
1016    The INIT function takes two parameters: INFO which contains the
1017    information available to gdbarch about the (possibly new)
1018    architecture; ARCHES which is a list of the previously created
1019    \`\`struct gdbarch'' for this architecture.
1020
1021    The INFO parameter is, as far as possible, be pre-initialized with
1022    information obtained from INFO.ABFD or the global defaults.
1023
1024    The ARCHES parameter is a linked list (sorted most recently used)
1025    of all the previously created architures for this architecture
1026    family.  The (possibly NULL) ARCHES->gdbarch can used to access
1027    values from the previously selected architecture for this
1028    architecture family.
1029
1030    The INIT function shall return any of: NULL - indicating that it
1031    doesn't recognize the selected architecture; an existing \`\`struct
1032    gdbarch'' from the ARCHES list - indicating that the new
1033    architecture is just a synonym for an earlier architecture (see
1034    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1035    - that describes the selected architecture (see gdbarch_alloc()).
1036
1037    The DUMP_TDEP function shall print out all target specific values.
1038    Care should be taken to ensure that the function works in both the
1039    multi-arch and non- multi-arch cases. */
1040
1041 struct gdbarch_list
1042 {
1043   struct gdbarch *gdbarch;
1044   struct gdbarch_list *next;
1045 };
1046
1047 struct gdbarch_info
1048 {
1049   /* Use default: NULL (ZERO). */
1050   const struct bfd_arch_info *bfd_arch_info;
1051
1052   /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO).  */
1053   int byte_order;
1054
1055   int byte_order_for_code;
1056
1057   /* Use default: NULL (ZERO). */
1058   bfd *abfd;
1059
1060   /* Use default: NULL (ZERO). */
1061   struct gdbarch_tdep_info *tdep_info;
1062
1063   /* Use default: GDB_OSABI_UNINITIALIZED (-1).  */
1064   enum gdb_osabi osabi;
1065
1066   /* Use default: NULL (ZERO).  */
1067   const struct target_desc *target_desc;
1068 };
1069
1070 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1071 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1072
1073 /* DEPRECATED - use gdbarch_register() */
1074 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1075
1076 extern void gdbarch_register (enum bfd_architecture architecture,
1077                               gdbarch_init_ftype *,
1078                               gdbarch_dump_tdep_ftype *);
1079
1080
1081 /* Return a freshly allocated, NULL terminated, array of the valid
1082    architecture names.  Since architectures are registered during the
1083    _initialize phase this function only returns useful information
1084    once initialization has been completed. */
1085
1086 extern const char **gdbarch_printable_names (void);
1087
1088
1089 /* Helper function.  Search the list of ARCHES for a GDBARCH that
1090    matches the information provided by INFO. */
1091
1092 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1093
1094
1095 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
1096    basic initialization using values obtained from the INFO and TDEP
1097    parameters.  set_gdbarch_*() functions are called to complete the
1098    initialization of the object. */
1099
1100 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1101
1102
1103 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
1104    It is assumed that the caller freeds the \`\`struct
1105    gdbarch_tdep''. */
1106
1107 extern void gdbarch_free (struct gdbarch *);
1108
1109
1110 /* Helper function.  Allocate memory from the \`\`struct gdbarch''
1111    obstack.  The memory is freed when the corresponding architecture
1112    is also freed.  */
1113
1114 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1115 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1116 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1117
1118
1119 /* Helper function. Force an update of the current architecture.
1120
1121    The actual architecture selected is determined by INFO, \`\`(gdb) set
1122    architecture'' et.al., the existing architecture and BFD's default
1123    architecture.  INFO should be initialized to zero and then selected
1124    fields should be updated.
1125
1126    Returns non-zero if the update succeeds */
1127
1128 extern int gdbarch_update_p (struct gdbarch_info info);
1129
1130
1131 /* Helper function.  Find an architecture matching info.
1132
1133    INFO should be initialized using gdbarch_info_init, relevant fields
1134    set, and then finished using gdbarch_info_fill.
1135
1136    Returns the corresponding architecture, or NULL if no matching
1137    architecture was found.  */
1138
1139 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1140
1141
1142 /* Helper function.  Set the global "target_gdbarch" to "gdbarch".
1143
1144    FIXME: kettenis/20031124: Of the functions that follow, only
1145    gdbarch_from_bfd is supposed to survive.  The others will
1146    dissappear since in the future GDB will (hopefully) be truly
1147    multi-arch.  However, for now we're still stuck with the concept of
1148    a single active architecture.  */
1149
1150 extern void deprecated_target_gdbarch_select_hack (struct gdbarch *gdbarch);
1151
1152
1153 /* Register per-architecture data-pointer.
1154
1155    Reserve space for a per-architecture data-pointer.  An identifier
1156    for the reserved data-pointer is returned.  That identifer should
1157    be saved in a local static variable.
1158
1159    Memory for the per-architecture data shall be allocated using
1160    gdbarch_obstack_zalloc.  That memory will be deleted when the
1161    corresponding architecture object is deleted.
1162
1163    When a previously created architecture is re-selected, the
1164    per-architecture data-pointer for that previous architecture is
1165    restored.  INIT() is not re-called.
1166
1167    Multiple registrarants for any architecture are allowed (and
1168    strongly encouraged).  */
1169
1170 struct gdbarch_data;
1171
1172 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1173 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1174 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1175 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1176 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1177                                          struct gdbarch_data *data,
1178                                          void *pointer);
1179
1180 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1181
1182
1183 /* Set the dynamic target-system-dependent parameters (architecture,
1184    byte-order, ...) using information found in the BFD */
1185
1186 extern void set_gdbarch_from_file (bfd *);
1187
1188
1189 /* Initialize the current architecture to the "first" one we find on
1190    our list.  */
1191
1192 extern void initialize_current_architecture (void);
1193
1194 /* gdbarch trace variable */
1195 extern int gdbarch_debug;
1196
1197 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1198
1199 #endif
1200 EOF
1201 exec 1>&2
1202 #../move-if-change new-gdbarch.h gdbarch.h
1203 compare_new gdbarch.h
1204
1205
1206 #
1207 # C file
1208 #
1209
1210 exec > new-gdbarch.c
1211 copyright
1212 cat <<EOF
1213
1214 #include "defs.h"
1215 #include "arch-utils.h"
1216
1217 #include "gdbcmd.h"
1218 #include "inferior.h"
1219 #include "symcat.h"
1220
1221 #include "floatformat.h"
1222
1223 #include "gdb_assert.h"
1224 #include "gdb_string.h"
1225 #include "reggroups.h"
1226 #include "osabi.h"
1227 #include "gdb_obstack.h"
1228 #include "observer.h"
1229 #include "regcache.h"
1230
1231 /* Static function declarations */
1232
1233 static void alloc_gdbarch_data (struct gdbarch *);
1234
1235 /* Non-zero if we want to trace architecture code.  */
1236
1237 #ifndef GDBARCH_DEBUG
1238 #define GDBARCH_DEBUG 0
1239 #endif
1240 int gdbarch_debug = GDBARCH_DEBUG;
1241 static void
1242 show_gdbarch_debug (struct ui_file *file, int from_tty,
1243                     struct cmd_list_element *c, const char *value)
1244 {
1245   fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1246 }
1247
1248 static const char *
1249 pformat (const struct floatformat **format)
1250 {
1251   if (format == NULL)
1252     return "(null)";
1253   else
1254     /* Just print out one of them - this is only for diagnostics.  */
1255     return format[0]->name;
1256 }
1257
1258 static const char *
1259 pstring (const char *string)
1260 {
1261   if (string == NULL)
1262     return "(null)";
1263   return string;
1264 }
1265
1266 EOF
1267
1268 # gdbarch open the gdbarch object
1269 printf "\n"
1270 printf "/* Maintain the struct gdbarch object */\n"
1271 printf "\n"
1272 printf "struct gdbarch\n"
1273 printf "{\n"
1274 printf "  /* Has this architecture been fully initialized?  */\n"
1275 printf "  int initialized_p;\n"
1276 printf "\n"
1277 printf "  /* An obstack bound to the lifetime of the architecture.  */\n"
1278 printf "  struct obstack *obstack;\n"
1279 printf "\n"
1280 printf "  /* basic architectural information */\n"
1281 function_list | while do_read
1282 do
1283     if class_is_info_p
1284     then
1285         printf "  ${returntype} ${function};\n"
1286     fi
1287 done
1288 printf "\n"
1289 printf "  /* target specific vector. */\n"
1290 printf "  struct gdbarch_tdep *tdep;\n"
1291 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1292 printf "\n"
1293 printf "  /* per-architecture data-pointers */\n"
1294 printf "  unsigned nr_data;\n"
1295 printf "  void **data;\n"
1296 printf "\n"
1297 printf "  /* per-architecture swap-regions */\n"
1298 printf "  struct gdbarch_swap *swap;\n"
1299 printf "\n"
1300 cat <<EOF
1301   /* Multi-arch values.
1302
1303      When extending this structure you must:
1304
1305      Add the field below.
1306
1307      Declare set/get functions and define the corresponding
1308      macro in gdbarch.h.
1309
1310      gdbarch_alloc(): If zero/NULL is not a suitable default,
1311      initialize the new field.
1312
1313      verify_gdbarch(): Confirm that the target updated the field
1314      correctly.
1315
1316      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1317      field is dumped out
1318
1319      \`\`startup_gdbarch()'': Append an initial value to the static
1320      variable (base values on the host's c-type system).
1321
1322      get_gdbarch(): Implement the set/get functions (probably using
1323      the macro's as shortcuts).
1324
1325      */
1326
1327 EOF
1328 function_list | while do_read
1329 do
1330     if class_is_variable_p
1331     then
1332         printf "  ${returntype} ${function};\n"
1333     elif class_is_function_p
1334     then
1335         printf "  gdbarch_${function}_ftype *${function};\n"
1336     fi
1337 done
1338 printf "};\n"
1339
1340 # A pre-initialized vector
1341 printf "\n"
1342 printf "\n"
1343 cat <<EOF
1344 /* The default architecture uses host values (for want of a better
1345    choice). */
1346 EOF
1347 printf "\n"
1348 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1349 printf "\n"
1350 printf "struct gdbarch startup_gdbarch =\n"
1351 printf "{\n"
1352 printf "  1, /* Always initialized.  */\n"
1353 printf "  NULL, /* The obstack.  */\n"
1354 printf "  /* basic architecture information */\n"
1355 function_list | while do_read
1356 do
1357     if class_is_info_p
1358     then
1359         printf "  ${staticdefault},  /* ${function} */\n"
1360     fi
1361 done
1362 cat <<EOF
1363   /* target specific vector and its dump routine */
1364   NULL, NULL,
1365   /*per-architecture data-pointers and swap regions */
1366   0, NULL, NULL,
1367   /* Multi-arch values */
1368 EOF
1369 function_list | while do_read
1370 do
1371     if class_is_function_p || class_is_variable_p
1372     then
1373         printf "  ${staticdefault},  /* ${function} */\n"
1374     fi
1375 done
1376 cat <<EOF
1377   /* startup_gdbarch() */
1378 };
1379
1380 struct gdbarch *target_gdbarch = &startup_gdbarch;
1381 EOF
1382
1383 # Create a new gdbarch struct
1384 cat <<EOF
1385
1386 /* Create a new \`\`struct gdbarch'' based on information provided by
1387    \`\`struct gdbarch_info''. */
1388 EOF
1389 printf "\n"
1390 cat <<EOF
1391 struct gdbarch *
1392 gdbarch_alloc (const struct gdbarch_info *info,
1393                struct gdbarch_tdep *tdep)
1394 {
1395   struct gdbarch *gdbarch;
1396
1397   /* Create an obstack for allocating all the per-architecture memory,
1398      then use that to allocate the architecture vector.  */
1399   struct obstack *obstack = XMALLOC (struct obstack);
1400   obstack_init (obstack);
1401   gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1402   memset (gdbarch, 0, sizeof (*gdbarch));
1403   gdbarch->obstack = obstack;
1404
1405   alloc_gdbarch_data (gdbarch);
1406
1407   gdbarch->tdep = tdep;
1408 EOF
1409 printf "\n"
1410 function_list | while do_read
1411 do
1412     if class_is_info_p
1413     then
1414         printf "  gdbarch->${function} = info->${function};\n"
1415     fi
1416 done
1417 printf "\n"
1418 printf "  /* Force the explicit initialization of these. */\n"
1419 function_list | while do_read
1420 do
1421     if class_is_function_p || class_is_variable_p
1422     then
1423         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1424         then
1425           printf "  gdbarch->${function} = ${predefault};\n"
1426         fi
1427     fi
1428 done
1429 cat <<EOF
1430   /* gdbarch_alloc() */
1431
1432   return gdbarch;
1433 }
1434 EOF
1435
1436 # Free a gdbarch struct.
1437 printf "\n"
1438 printf "\n"
1439 cat <<EOF
1440 /* Allocate extra space using the per-architecture obstack.  */
1441
1442 void *
1443 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1444 {
1445   void *data = obstack_alloc (arch->obstack, size);
1446   memset (data, 0, size);
1447   return data;
1448 }
1449
1450
1451 /* Free a gdbarch struct.  This should never happen in normal
1452    operation --- once you've created a gdbarch, you keep it around.
1453    However, if an architecture's init function encounters an error
1454    building the structure, it may need to clean up a partially
1455    constructed gdbarch.  */
1456
1457 void
1458 gdbarch_free (struct gdbarch *arch)
1459 {
1460   struct obstack *obstack;
1461   gdb_assert (arch != NULL);
1462   gdb_assert (!arch->initialized_p);
1463   obstack = arch->obstack;
1464   obstack_free (obstack, 0); /* Includes the ARCH.  */
1465   xfree (obstack);
1466 }
1467 EOF
1468
1469 # verify a new architecture
1470 cat <<EOF
1471
1472
1473 /* Ensure that all values in a GDBARCH are reasonable.  */
1474
1475 static void
1476 verify_gdbarch (struct gdbarch *gdbarch)
1477 {
1478   struct ui_file *log;
1479   struct cleanup *cleanups;
1480   long length;
1481   char *buf;
1482   log = mem_fileopen ();
1483   cleanups = make_cleanup_ui_file_delete (log);
1484   /* fundamental */
1485   if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1486     fprintf_unfiltered (log, "\n\tbyte-order");
1487   if (gdbarch->bfd_arch_info == NULL)
1488     fprintf_unfiltered (log, "\n\tbfd_arch_info");
1489   /* Check those that need to be defined for the given multi-arch level. */
1490 EOF
1491 function_list | while do_read
1492 do
1493     if class_is_function_p || class_is_variable_p
1494     then
1495         if [ "x${invalid_p}" = "x0" ]
1496         then
1497             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1498         elif class_is_predicate_p
1499         then
1500             printf "  /* Skip verify of ${function}, has predicate */\n"
1501         # FIXME: See do_read for potential simplification
1502         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1503         then
1504             printf "  if (${invalid_p})\n"
1505             printf "    gdbarch->${function} = ${postdefault};\n"
1506         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1507         then
1508             printf "  if (gdbarch->${function} == ${predefault})\n"
1509             printf "    gdbarch->${function} = ${postdefault};\n"
1510         elif [ -n "${postdefault}" ]
1511         then
1512             printf "  if (gdbarch->${function} == 0)\n"
1513             printf "    gdbarch->${function} = ${postdefault};\n"
1514         elif [ -n "${invalid_p}" ]
1515         then
1516             printf "  if (${invalid_p})\n"
1517             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1518         elif [ -n "${predefault}" ]
1519         then
1520             printf "  if (gdbarch->${function} == ${predefault})\n"
1521             printf "    fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1522         fi
1523     fi
1524 done
1525 cat <<EOF
1526   buf = ui_file_xstrdup (log, &length);
1527   make_cleanup (xfree, buf);
1528   if (length > 0)
1529     internal_error (__FILE__, __LINE__,
1530                     _("verify_gdbarch: the following are invalid ...%s"),
1531                     buf);
1532   do_cleanups (cleanups);
1533 }
1534 EOF
1535
1536 # dump the structure
1537 printf "\n"
1538 printf "\n"
1539 cat <<EOF
1540 /* Print out the details of the current architecture. */
1541
1542 void
1543 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1544 {
1545   const char *gdb_nm_file = "<not-defined>";
1546 #if defined (GDB_NM_FILE)
1547   gdb_nm_file = GDB_NM_FILE;
1548 #endif
1549   fprintf_unfiltered (file,
1550                       "gdbarch_dump: GDB_NM_FILE = %s\\n",
1551                       gdb_nm_file);
1552 EOF
1553 function_list | sort -t: -k 3 | while do_read
1554 do
1555     # First the predicate
1556     if class_is_predicate_p
1557     then
1558         printf "  fprintf_unfiltered (file,\n"
1559         printf "                      \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1560         printf "                      gdbarch_${function}_p (gdbarch));\n"
1561     fi
1562     # Print the corresponding value.
1563     if class_is_function_p
1564     then
1565         printf "  fprintf_unfiltered (file,\n"
1566         printf "                      \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1567         printf "                      host_address_to_string (gdbarch->${function}));\n"
1568     else
1569         # It is a variable
1570         case "${print}:${returntype}" in
1571             :CORE_ADDR )
1572                 fmt="%s"
1573                 print="core_addr_to_string_nz (gdbarch->${function})"
1574                 ;;
1575             :* )
1576                 fmt="%s"
1577                 print="plongest (gdbarch->${function})"
1578                 ;;
1579             * )
1580                 fmt="%s"
1581                 ;;
1582         esac
1583         printf "  fprintf_unfiltered (file,\n"
1584         printf "                      \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1585         printf "                      ${print});\n"
1586     fi
1587 done
1588 cat <<EOF
1589   if (gdbarch->dump_tdep != NULL)
1590     gdbarch->dump_tdep (gdbarch, file);
1591 }
1592 EOF
1593
1594
1595 # GET/SET
1596 printf "\n"
1597 cat <<EOF
1598 struct gdbarch_tdep *
1599 gdbarch_tdep (struct gdbarch *gdbarch)
1600 {
1601   if (gdbarch_debug >= 2)
1602     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1603   return gdbarch->tdep;
1604 }
1605 EOF
1606 printf "\n"
1607 function_list | while do_read
1608 do
1609     if class_is_predicate_p
1610     then
1611         printf "\n"
1612         printf "int\n"
1613         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1614         printf "{\n"
1615         printf "  gdb_assert (gdbarch != NULL);\n"
1616         printf "  return ${predicate};\n"
1617         printf "}\n"
1618     fi
1619     if class_is_function_p
1620     then
1621         printf "\n"
1622         printf "${returntype}\n"
1623         if [ "x${formal}" = "xvoid" ]
1624         then
1625           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1626         else
1627           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1628         fi
1629         printf "{\n"
1630         printf "  gdb_assert (gdbarch != NULL);\n"
1631         printf "  gdb_assert (gdbarch->${function} != NULL);\n"
1632         if class_is_predicate_p && test -n "${predefault}"
1633         then
1634             # Allow a call to a function with a predicate.
1635             printf "  /* Do not check predicate: ${predicate}, allow call.  */\n"
1636         fi
1637         printf "  if (gdbarch_debug >= 2)\n"
1638         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1639         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1640         then
1641             if class_is_multiarch_p
1642             then
1643                 params="gdbarch"
1644             else
1645                 params=""
1646             fi
1647         else
1648             if class_is_multiarch_p
1649             then
1650                 params="gdbarch, ${actual}"
1651             else
1652                 params="${actual}"
1653             fi
1654         fi
1655         if [ "x${returntype}" = "xvoid" ]
1656         then
1657           printf "  gdbarch->${function} (${params});\n"
1658         else
1659           printf "  return gdbarch->${function} (${params});\n"
1660         fi
1661         printf "}\n"
1662         printf "\n"
1663         printf "void\n"
1664         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1665         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1666         printf "{\n"
1667         printf "  gdbarch->${function} = ${function};\n"
1668         printf "}\n"
1669     elif class_is_variable_p
1670     then
1671         printf "\n"
1672         printf "${returntype}\n"
1673         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1674         printf "{\n"
1675         printf "  gdb_assert (gdbarch != NULL);\n"
1676         if [ "x${invalid_p}" = "x0" ]
1677         then
1678             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1679         elif [ -n "${invalid_p}" ]
1680         then
1681             printf "  /* Check variable is valid.  */\n"
1682             printf "  gdb_assert (!(${invalid_p}));\n"
1683         elif [ -n "${predefault}" ]
1684         then
1685             printf "  /* Check variable changed from pre-default.  */\n"
1686             printf "  gdb_assert (gdbarch->${function} != ${predefault});\n"
1687         fi
1688         printf "  if (gdbarch_debug >= 2)\n"
1689         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1690         printf "  return gdbarch->${function};\n"
1691         printf "}\n"
1692         printf "\n"
1693         printf "void\n"
1694         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1695         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1696         printf "{\n"
1697         printf "  gdbarch->${function} = ${function};\n"
1698         printf "}\n"
1699     elif class_is_info_p
1700     then
1701         printf "\n"
1702         printf "${returntype}\n"
1703         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1704         printf "{\n"
1705         printf "  gdb_assert (gdbarch != NULL);\n"
1706         printf "  if (gdbarch_debug >= 2)\n"
1707         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1708         printf "  return gdbarch->${function};\n"
1709         printf "}\n"
1710     fi
1711 done
1712
1713 # All the trailing guff
1714 cat <<EOF
1715
1716
1717 /* Keep a registry of per-architecture data-pointers required by GDB
1718    modules. */
1719
1720 struct gdbarch_data
1721 {
1722   unsigned index;
1723   int init_p;
1724   gdbarch_data_pre_init_ftype *pre_init;
1725   gdbarch_data_post_init_ftype *post_init;
1726 };
1727
1728 struct gdbarch_data_registration
1729 {
1730   struct gdbarch_data *data;
1731   struct gdbarch_data_registration *next;
1732 };
1733
1734 struct gdbarch_data_registry
1735 {
1736   unsigned nr;
1737   struct gdbarch_data_registration *registrations;
1738 };
1739
1740 struct gdbarch_data_registry gdbarch_data_registry =
1741 {
1742   0, NULL,
1743 };
1744
1745 static struct gdbarch_data *
1746 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1747                        gdbarch_data_post_init_ftype *post_init)
1748 {
1749   struct gdbarch_data_registration **curr;
1750   /* Append the new registraration.  */
1751   for (curr = &gdbarch_data_registry.registrations;
1752        (*curr) != NULL;
1753        curr = &(*curr)->next);
1754   (*curr) = XMALLOC (struct gdbarch_data_registration);
1755   (*curr)->next = NULL;
1756   (*curr)->data = XMALLOC (struct gdbarch_data);
1757   (*curr)->data->index = gdbarch_data_registry.nr++;
1758   (*curr)->data->pre_init = pre_init;
1759   (*curr)->data->post_init = post_init;
1760   (*curr)->data->init_p = 1;
1761   return (*curr)->data;
1762 }
1763
1764 struct gdbarch_data *
1765 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1766 {
1767   return gdbarch_data_register (pre_init, NULL);
1768 }
1769
1770 struct gdbarch_data *
1771 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1772 {
1773   return gdbarch_data_register (NULL, post_init);
1774 }
1775
1776 /* Create/delete the gdbarch data vector. */
1777
1778 static void
1779 alloc_gdbarch_data (struct gdbarch *gdbarch)
1780 {
1781   gdb_assert (gdbarch->data == NULL);
1782   gdbarch->nr_data = gdbarch_data_registry.nr;
1783   gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1784 }
1785
1786 /* Initialize the current value of the specified per-architecture
1787    data-pointer. */
1788
1789 void
1790 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1791                              struct gdbarch_data *data,
1792                              void *pointer)
1793 {
1794   gdb_assert (data->index < gdbarch->nr_data);
1795   gdb_assert (gdbarch->data[data->index] == NULL);
1796   gdb_assert (data->pre_init == NULL);
1797   gdbarch->data[data->index] = pointer;
1798 }
1799
1800 /* Return the current value of the specified per-architecture
1801    data-pointer. */
1802
1803 void *
1804 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1805 {
1806   gdb_assert (data->index < gdbarch->nr_data);
1807   if (gdbarch->data[data->index] == NULL)
1808     {
1809       /* The data-pointer isn't initialized, call init() to get a
1810          value.  */
1811       if (data->pre_init != NULL)
1812         /* Mid architecture creation: pass just the obstack, and not
1813            the entire architecture, as that way it isn't possible for
1814            pre-init code to refer to undefined architecture
1815            fields.  */
1816         gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1817       else if (gdbarch->initialized_p
1818                && data->post_init != NULL)
1819         /* Post architecture creation: pass the entire architecture
1820            (as all fields are valid), but be careful to also detect
1821            recursive references.  */
1822         {
1823           gdb_assert (data->init_p);
1824           data->init_p = 0;
1825           gdbarch->data[data->index] = data->post_init (gdbarch);
1826           data->init_p = 1;
1827         }
1828       else
1829         /* The architecture initialization hasn't completed - punt -
1830          hope that the caller knows what they are doing.  Once
1831          deprecated_set_gdbarch_data has been initialized, this can be
1832          changed to an internal error.  */
1833         return NULL;
1834       gdb_assert (gdbarch->data[data->index] != NULL);
1835     }
1836   return gdbarch->data[data->index];
1837 }
1838
1839
1840 /* Keep a registry of the architectures known by GDB. */
1841
1842 struct gdbarch_registration
1843 {
1844   enum bfd_architecture bfd_architecture;
1845   gdbarch_init_ftype *init;
1846   gdbarch_dump_tdep_ftype *dump_tdep;
1847   struct gdbarch_list *arches;
1848   struct gdbarch_registration *next;
1849 };
1850
1851 static struct gdbarch_registration *gdbarch_registry = NULL;
1852
1853 static void
1854 append_name (const char ***buf, int *nr, const char *name)
1855 {
1856   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1857   (*buf)[*nr] = name;
1858   *nr += 1;
1859 }
1860
1861 const char **
1862 gdbarch_printable_names (void)
1863 {
1864   /* Accumulate a list of names based on the registed list of
1865      architectures. */
1866   int nr_arches = 0;
1867   const char **arches = NULL;
1868   struct gdbarch_registration *rego;
1869   for (rego = gdbarch_registry;
1870        rego != NULL;
1871        rego = rego->next)
1872     {
1873       const struct bfd_arch_info *ap;
1874       ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1875       if (ap == NULL)
1876         internal_error (__FILE__, __LINE__,
1877                         _("gdbarch_architecture_names: multi-arch unknown"));
1878       do
1879         {
1880           append_name (&arches, &nr_arches, ap->printable_name);
1881           ap = ap->next;
1882         }
1883       while (ap != NULL);
1884     }
1885   append_name (&arches, &nr_arches, NULL);
1886   return arches;
1887 }
1888
1889
1890 void
1891 gdbarch_register (enum bfd_architecture bfd_architecture,
1892                   gdbarch_init_ftype *init,
1893                   gdbarch_dump_tdep_ftype *dump_tdep)
1894 {
1895   struct gdbarch_registration **curr;
1896   const struct bfd_arch_info *bfd_arch_info;
1897   /* Check that BFD recognizes this architecture */
1898   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1899   if (bfd_arch_info == NULL)
1900     {
1901       internal_error (__FILE__, __LINE__,
1902                       _("gdbarch: Attempt to register unknown architecture (%d)"),
1903                       bfd_architecture);
1904     }
1905   /* Check that we haven't seen this architecture before */
1906   for (curr = &gdbarch_registry;
1907        (*curr) != NULL;
1908        curr = &(*curr)->next)
1909     {
1910       if (bfd_architecture == (*curr)->bfd_architecture)
1911         internal_error (__FILE__, __LINE__,
1912                         _("gdbarch: Duplicate registraration of architecture (%s)"),
1913                         bfd_arch_info->printable_name);
1914     }
1915   /* log it */
1916   if (gdbarch_debug)
1917     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
1918                         bfd_arch_info->printable_name,
1919                         host_address_to_string (init));
1920   /* Append it */
1921   (*curr) = XMALLOC (struct gdbarch_registration);
1922   (*curr)->bfd_architecture = bfd_architecture;
1923   (*curr)->init = init;
1924   (*curr)->dump_tdep = dump_tdep;
1925   (*curr)->arches = NULL;
1926   (*curr)->next = NULL;
1927 }
1928
1929 void
1930 register_gdbarch_init (enum bfd_architecture bfd_architecture,
1931                        gdbarch_init_ftype *init)
1932 {
1933   gdbarch_register (bfd_architecture, init, NULL);
1934 }
1935
1936
1937 /* Look for an architecture using gdbarch_info.  */
1938
1939 struct gdbarch_list *
1940 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
1941                              const struct gdbarch_info *info)
1942 {
1943   for (; arches != NULL; arches = arches->next)
1944     {
1945       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
1946         continue;
1947       if (info->byte_order != arches->gdbarch->byte_order)
1948         continue;
1949       if (info->osabi != arches->gdbarch->osabi)
1950         continue;
1951       if (info->target_desc != arches->gdbarch->target_desc)
1952         continue;
1953       return arches;
1954     }
1955   return NULL;
1956 }
1957
1958
1959 /* Find an architecture that matches the specified INFO.  Create a new
1960    architecture if needed.  Return that new architecture.  */
1961
1962 struct gdbarch *
1963 gdbarch_find_by_info (struct gdbarch_info info)
1964 {
1965   struct gdbarch *new_gdbarch;
1966   struct gdbarch_registration *rego;
1967
1968   /* Fill in missing parts of the INFO struct using a number of
1969      sources: "set ..."; INFOabfd supplied; and the global
1970      defaults.  */
1971   gdbarch_info_fill (&info);
1972
1973   /* Must have found some sort of architecture. */
1974   gdb_assert (info.bfd_arch_info != NULL);
1975
1976   if (gdbarch_debug)
1977     {
1978       fprintf_unfiltered (gdb_stdlog,
1979                           "gdbarch_find_by_info: info.bfd_arch_info %s\n",
1980                           (info.bfd_arch_info != NULL
1981                            ? info.bfd_arch_info->printable_name
1982                            : "(null)"));
1983       fprintf_unfiltered (gdb_stdlog,
1984                           "gdbarch_find_by_info: info.byte_order %d (%s)\n",
1985                           info.byte_order,
1986                           (info.byte_order == BFD_ENDIAN_BIG ? "big"
1987                            : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
1988                            : "default"));
1989       fprintf_unfiltered (gdb_stdlog,
1990                           "gdbarch_find_by_info: info.osabi %d (%s)\n",
1991                           info.osabi, gdbarch_osabi_name (info.osabi));
1992       fprintf_unfiltered (gdb_stdlog,
1993                           "gdbarch_find_by_info: info.abfd %s\n",
1994                           host_address_to_string (info.abfd));
1995       fprintf_unfiltered (gdb_stdlog,
1996                           "gdbarch_find_by_info: info.tdep_info %s\n",
1997                           host_address_to_string (info.tdep_info));
1998     }
1999
2000   /* Find the tdep code that knows about this architecture.  */
2001   for (rego = gdbarch_registry;
2002        rego != NULL;
2003        rego = rego->next)
2004     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2005       break;
2006   if (rego == NULL)
2007     {
2008       if (gdbarch_debug)
2009         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2010                             "No matching architecture\n");
2011       return 0;
2012     }
2013
2014   /* Ask the tdep code for an architecture that matches "info".  */
2015   new_gdbarch = rego->init (info, rego->arches);
2016
2017   /* Did the tdep code like it?  No.  Reject the change and revert to
2018      the old architecture.  */
2019   if (new_gdbarch == NULL)
2020     {
2021       if (gdbarch_debug)
2022         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2023                             "Target rejected architecture\n");
2024       return NULL;
2025     }
2026
2027   /* Is this a pre-existing architecture (as determined by already
2028      being initialized)?  Move it to the front of the architecture
2029      list (keeping the list sorted Most Recently Used).  */
2030   if (new_gdbarch->initialized_p)
2031     {
2032       struct gdbarch_list **list;
2033       struct gdbarch_list *this;
2034       if (gdbarch_debug)
2035         fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2036                             "Previous architecture %s (%s) selected\n",
2037                             host_address_to_string (new_gdbarch),
2038                             new_gdbarch->bfd_arch_info->printable_name);
2039       /* Find the existing arch in the list.  */
2040       for (list = &rego->arches;
2041            (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2042            list = &(*list)->next);
2043       /* It had better be in the list of architectures.  */
2044       gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2045       /* Unlink THIS.  */
2046       this = (*list);
2047       (*list) = this->next;
2048       /* Insert THIS at the front.  */
2049       this->next = rego->arches;
2050       rego->arches = this;
2051       /* Return it.  */
2052       return new_gdbarch;
2053     }
2054
2055   /* It's a new architecture.  */
2056   if (gdbarch_debug)
2057     fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2058                         "New architecture %s (%s) selected\n",
2059                         host_address_to_string (new_gdbarch),
2060                         new_gdbarch->bfd_arch_info->printable_name);
2061
2062   /* Insert the new architecture into the front of the architecture
2063      list (keep the list sorted Most Recently Used).  */
2064   {
2065     struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2066     this->next = rego->arches;
2067     this->gdbarch = new_gdbarch;
2068     rego->arches = this;
2069   }
2070
2071   /* Check that the newly installed architecture is valid.  Plug in
2072      any post init values.  */
2073   new_gdbarch->dump_tdep = rego->dump_tdep;
2074   verify_gdbarch (new_gdbarch);
2075   new_gdbarch->initialized_p = 1;
2076
2077   if (gdbarch_debug)
2078     gdbarch_dump (new_gdbarch, gdb_stdlog);
2079
2080   return new_gdbarch;
2081 }
2082
2083 /* Make the specified architecture current.  */
2084
2085 void
2086 deprecated_target_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2087 {
2088   gdb_assert (new_gdbarch != NULL);
2089   gdb_assert (new_gdbarch->initialized_p);
2090   target_gdbarch = new_gdbarch;
2091   observer_notify_architecture_changed (new_gdbarch);
2092   registers_changed ();
2093 }
2094
2095 extern void _initialize_gdbarch (void);
2096
2097 void
2098 _initialize_gdbarch (void)
2099 {
2100   add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2101 Set architecture debugging."), _("\\
2102 Show architecture debugging."), _("\\
2103 When non-zero, architecture debugging is enabled."),
2104                             NULL,
2105                             show_gdbarch_debug,
2106                             &setdebuglist, &showdebuglist);
2107 }
2108 EOF
2109
2110 # close things off
2111 exec 1>&2
2112 #../move-if-change new-gdbarch.c gdbarch.c
2113 compare_new gdbarch.c