gdb/gdbarch.sh

   1 #!/bin/sh -u
   2
   3 # Architecture commands for GDB, the GNU debugger.
   4 # Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   5 #
   6 # This file is part of GDB.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21
  22 compare_new ()
  23 {
  24     file=$1
  25     if test ! -r ${file}
  26     then
  27         echo "${file} missing? cp new-${file} ${file}" 1>&2
  28     elif diff -c ${file} new-${file}
  29     then
  30         echo "${file} unchanged" 1>&2
  31     else
  32         echo "${file} has changed? cp new-${file} ${file}" 1>&2
  33     fi
  34 }
  35
  36
  37 # Format of the input table
  38 read="class level macro returntype function formal actual attrib staticdefault predefault postdefault invalid_p fmt print print_p description"
  39
  40 do_read ()
  41 {
  42     comment=""
  43     class=""
  44     while read line
  45     do
  46         if test "${line}" = ""
  47         then
  48             continue
  49         elif test "${line}" = "#" -a "${comment}" = ""
  50         then
  51             continue
  52         elif expr "${line}" : "#" > /dev/null
  53         then
  54             comment="${comment}
  55 ${line}"
  56         else
  57
  58             # The semantics of IFS varies between different SH's.  Some
  59             # treat ``::' as three fields while some treat it as just too.
  60             # Work around this by eliminating ``::'' ....
  61             line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
  62
  63             OFS="${IFS}" ; IFS="[:]"
  64             eval read ${read} <<EOF
  65 ${line}
  66 EOF
  67             IFS="${OFS}"
  68
  69             # .... and then going back through each field and strip out those
  70             # that ended up with just that space character.
  71             for r in ${read}
  72             do
  73                 if eval test \"\${${r}}\" = \"\ \"
  74                 then
  75                     eval ${r}=""
  76                 fi
  77             done
  78
  79             test "${staticdefault}" || staticdefault=0
  80             # NOT YET: Breaks BELIEVE_PCC_PROMOTION and confuses non-
  81             # multi-arch defaults.
  82             # test "${predefault}" || predefault=0
  83             test "${fmt}" || fmt="%ld"
  84             test "${print}" || print="(long) ${macro}"
  85             case "${invalid_p}" in
  86                 0 ) valid_p=1 ;;
  87                 "" )
  88                     if [ -n "${predefault}" ]
  89                     then
  90                         #invalid_p="gdbarch->${function} == ${predefault}"
  91                         valid_p="gdbarch->${function} != ${predefault}"
  92                     else
  93                         #invalid_p="gdbarch->${function} == 0"
  94                         valid_p="gdbarch->${function} != 0"
  95                     fi
  96                     ;;
  97                 * ) valid_p="!(${invalid_p})"
  98             esac
  99
 100             # PREDEFAULT is a valid fallback definition of MEMBER when
 101             # multi-arch is not enabled.  This ensures that the
 102             # default value, when multi-arch is the same as the
 103             # default value when not multi-arch.  POSTDEFAULT is
 104             # always a valid definition of MEMBER as this again
 105             # ensures consistency.
 106
 107             if [ -n "${postdefault}" ]
 108             then
 109                 fallbackdefault="${postdefault}"
 110             elif [ -n "${predefault}" ]
 111             then
 112                 fallbackdefault="${predefault}"
 113             else
 114                 fallbackdefault="0"
 115             fi
 116
 117             #NOT YET: See gdbarch.log for basic verification of
 118             # database
 119
 120             break
 121         fi
 122     done
 123     if [ -n "${class}" ]
 124     then
 125         true
 126     else
 127         false
 128     fi
 129 }
 130
 131
 132 fallback_default_p ()
 133 {
 134     [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
 135         || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
 136 }
 137
 138 class_is_variable_p ()
 139 {
 140     case "${class}" in
 141         *v* | *V* ) true ;;
 142         * ) false ;;
 143     esac
 144 }
 145
 146 class_is_function_p ()
 147 {
 148     case "${class}" in
 149         *f* | *F* | *m* | *M* ) true ;;
 150         * ) false ;;
 151     esac
 152 }
 153
 154 class_is_multiarch_p ()
 155 {
 156     case "${class}" in
 157         *m* | *M* ) true ;;
 158         * ) false ;;
 159     esac
 160 }
 161
 162 class_is_predicate_p ()
 163 {
 164     case "${class}" in
 165         *F* | *V* | *M* ) true ;;
 166         * ) false ;;
 167     esac
 168 }
 169
 170 class_is_info_p ()
 171 {
 172     case "${class}" in
 173         *i* ) true ;;
 174         * ) false ;;
 175     esac
 176 }
 177
 178
 179 # dump out/verify the doco
 180 for field in ${read}
 181 do
 182   case ${field} in
 183
 184     class ) : ;;
 185
 186         # # -> line disable
 187         # f -> function
 188         #   hiding a function
 189         # F -> function + predicate
 190         #   hiding a function + predicate to test function validity
 191         # v -> variable
 192         #   hiding a variable
 193         # V -> variable + predicate
 194         #   hiding a variable + predicate to test variables validity
 195         # i -> set from info
 196         #   hiding something from the ``struct info'' object
 197         # m -> multi-arch function
 198         #   hiding a multi-arch function (parameterised with the architecture)
 199         # M -> multi-arch function + predicate
 200         #   hiding a multi-arch function + predicate to test function validity
 201
 202     level ) : ;;
 203
 204         # See GDB_MULTI_ARCH description.  Having GDB_MULTI_ARCH >=
 205         # LEVEL is a predicate on checking that a given method is
 206         # initialized (using INVALID_P).
 207
 208     macro ) : ;;
 209
 210         # The name of the MACRO that this method is to be accessed by.
 211
 212     returntype ) : ;;
 213
 214         # For functions, the return type; for variables, the data type
 215
 216     function ) : ;;
 217
 218         # For functions, the member function name; for variables, the
 219         # variable name.  Member function names are always prefixed with
 220         # ``gdbarch_'' for name-space purity.
 221
 222     formal ) : ;;
 223
 224         # The formal argument list.  It is assumed that the formal
 225         # argument list includes the actual name of each list element.
 226         # A function with no arguments shall have ``void'' as the
 227         # formal argument list.
 228
 229     actual ) : ;;
 230
 231         # The list of actual arguments.  The arguments specified shall
 232         # match the FORMAL list given above.  Functions with out
 233         # arguments leave this blank.
 234
 235     attrib ) : ;;
 236
 237         # Any GCC attributes that should be attached to the function
 238         # declaration.  At present this field is unused.
 239
 240     staticdefault ) : ;;
 241
 242         # To help with the GDB startup a static gdbarch object is
 243         # created.  STATICDEFAULT is the value to insert into that
 244         # static gdbarch object.  Since this a static object only
 245         # simple expressions can be used.
 246
 247         # If STATICDEFAULT is empty, zero is used.
 248
 249     predefault ) : ;;
 250
 251         # An initial value to assign to MEMBER of the freshly
 252         # malloc()ed gdbarch object.  After initialization, the
 253         # freshly malloc()ed object is passed to the target
 254         # architecture code for further updates.
 255
 256         # If PREDEFAULT is empty, zero is used.
 257
 258         # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
 259         # INVALID_P are specified, PREDEFAULT will be used as the
 260         # default for the non- multi-arch target.
 261
 262         # A zero PREDEFAULT function will force the fallback to call
 263         # internal_error().
 264
 265         # Variable declarations can refer to ``gdbarch'' which will
 266         # contain the current architecture.  Care should be taken.
 267
 268     postdefault ) : ;;
 269
 270         # A value to assign to MEMBER of the new gdbarch object should
 271         # the target architecture code fail to change the PREDEFAULT
 272         # value.
 273
 274         # If POSTDEFAULT is empty, no post update is performed.
 275
 276         # If both INVALID_P and POSTDEFAULT are non-empty then
 277         # INVALID_P will be used to determine if MEMBER should be
 278         # changed to POSTDEFAULT.
 279
 280         # If a non-empty POSTDEFAULT and a zero INVALID_P are
 281         # specified, POSTDEFAULT will be used as the default for the
 282         # non- multi-arch target (regardless of the value of
 283         # PREDEFAULT).
 284
 285         # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
 286
 287         # Variable declarations can refer to ``gdbarch'' which will
 288         # contain the current architecture.  Care should be taken.
 289
 290     invalid_p ) : ;;
 291
 292         # A predicate equation that validates MEMBER.  Non-zero is
 293         # returned if the code creating the new architecture failed to
 294         # initialize MEMBER or the initialized the member is invalid.
 295         # If POSTDEFAULT is non-empty then MEMBER will be updated to
 296         # that value.  If POSTDEFAULT is empty then internal_error()
 297         # is called.
 298
 299         # If INVALID_P is empty, a check that MEMBER is no longer
 300         # equal to PREDEFAULT is used.
 301
 302         # The expression ``0'' disables the INVALID_P check making
 303         # PREDEFAULT a legitimate value.
 304
 305         # See also PREDEFAULT and POSTDEFAULT.
 306
 307     fmt ) : ;;
 308
 309         # printf style format string that can be used to print out the
 310         # MEMBER.  Sometimes "%s" is useful.  For functions, this is
 311         # ignored and the function address is printed.
 312
 313         # If FMT is empty, ``%ld'' is used.
 314
 315     print ) : ;;
 316
 317         # An optional equation that casts MEMBER to a value suitable
 318         # for formatting by FMT.
 319
 320         # If PRINT is empty, ``(long)'' is used.
 321
 322     print_p ) : ;;
 323
 324         # An optional indicator for any predicte to wrap around the
 325         # print member code.
 326
 327         #   () -> Call a custom function to do the dump.
 328         #   exp -> Wrap print up in ``if (${print_p}) ...
 329         #   ``'' -> No predicate
 330
 331         # If PRINT_P is empty, ``1'' is always used.
 332
 333     description ) : ;;
 334
 335         # Currently unused.
 336
 337     *) exit 1;;
 338   esac
 339 done
 340
 341
 342 function_list ()
 343 {
 344   # See below (DOCO) for description of each field
 345   cat <<EOF
 346 i:2:TARGET_ARCHITECTURE:const struct bfd_arch_info *:bfd_arch_info::::&bfd_default_arch_struct::::%s:TARGET_ARCHITECTURE->printable_name:TARGET_ARCHITECTURE != NULL
 347 #
 348 i:2:TARGET_BYTE_ORDER:int:byte_order::::BIG_ENDIAN
 349 # Number of bits in a char or unsigned char for the target machine.
 350 # Just like CHAR_BIT in <limits.h> but describes the target machine.
 351 # v::TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
 352 #
 353 # Number of bits in a short or unsigned short for the target machine.
 354 v::TARGET_SHORT_BIT:int:short_bit::::8 * sizeof (short):2*TARGET_CHAR_BIT::0
 355 # Number of bits in an int or unsigned int for the target machine.
 356 v::TARGET_INT_BIT:int:int_bit::::8 * sizeof (int):4*TARGET_CHAR_BIT::0
 357 # Number of bits in a long or unsigned long for the target machine.
 358 v::TARGET_LONG_BIT:int:long_bit::::8 * sizeof (long):4*TARGET_CHAR_BIT::0
 359 # Number of bits in a long long or unsigned long long for the target
 360 # machine.
 361 v::TARGET_LONG_LONG_BIT:int:long_long_bit::::8 * sizeof (LONGEST):2*TARGET_LONG_BIT::0
 362 # Number of bits in a float for the target machine.
 363 v::TARGET_FLOAT_BIT:int:float_bit::::8 * sizeof (float):4*TARGET_CHAR_BIT::0
 364 # Number of bits in a double for the target machine.
 365 v::TARGET_DOUBLE_BIT:int:double_bit::::8 * sizeof (double):8*TARGET_CHAR_BIT::0
 366 # Number of bits in a long double for the target machine.
 367 v::TARGET_LONG_DOUBLE_BIT:int:long_double_bit::::8 * sizeof (long double):2*TARGET_DOUBLE_BIT::0
 368 # For most targets, a pointer on the target and its representation as an
 369 # address in GDB have the same size and "look the same".  For such a
 370 # target, you need only set TARGET_PTR_BIT / ptr_bit and TARGET_ADDR_BIT
 371 # / addr_bit will be set from it.
 372 #
 373 # If TARGET_PTR_BIT and TARGET_ADDR_BIT are different, you'll probably
 374 # also need to set POINTER_TO_ADDRESS and ADDRESS_TO_POINTER as well.
 375 #
 376 # ptr_bit is the size of a pointer on the target
 377 v::TARGET_PTR_BIT:int:ptr_bit::::8 * sizeof (void*):TARGET_INT_BIT::0
 378 # addr_bit is the size of a target address as represented in gdb
 379 v::TARGET_ADDR_BIT:int:addr_bit::::8 * sizeof (void*):0:TARGET_PTR_BIT:
 380 # Number of bits in a BFD_VMA for the target object file format.
 381 v::TARGET_BFD_VMA_BIT:int:bfd_vma_bit::::8 * sizeof (void*):TARGET_ARCHITECTURE->bits_per_address::0
 382 #
 383 v::IEEE_FLOAT:int:ieee_float::::0:0::0:::
 384 #
 385 f::TARGET_READ_PC:CORE_ADDR:read_pc:ptid_t ptid:ptid::0:generic_target_read_pc::0
 386 f::TARGET_WRITE_PC:void:write_pc:CORE_ADDR val, ptid_t ptid:val, ptid::0:generic_target_write_pc::0
 387 f::TARGET_READ_FP:CORE_ADDR:read_fp:void:::0:generic_target_read_fp::0
 388 f::TARGET_WRITE_FP:void:write_fp:CORE_ADDR val:val::0:generic_target_write_fp::0
 389 f::TARGET_READ_SP:CORE_ADDR:read_sp:void:::0:generic_target_read_sp::0
 390 f::TARGET_WRITE_SP:void:write_sp:CORE_ADDR val:val::0:generic_target_write_sp::0
 391 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 392 # whole scheme for dealing with "frames" and "frame pointers" needs a
 393 # serious shakedown.
 394 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
 395 #
 396 M:::void:register_read:int regnum, char *buf:regnum, buf:
 397 M:::void:register_write:int regnum, char *buf:regnum, buf:
 398 #
 399 v:2:NUM_REGS:int:num_regs::::0:-1
 400 # This macro gives the number of pseudo-registers that live in the
 401 # register namespace but do not get fetched or stored on the target.
 402 # These pseudo-registers may be aliases for other registers,
 403 # combinations of other registers, or they may be computed by GDB.
 404 v:2:NUM_PSEUDO_REGS:int:num_pseudo_regs::::0:0::0:::
 405 v:2:SP_REGNUM:int:sp_regnum::::0:-1
 406 v:2:FP_REGNUM:int:fp_regnum::::0:-1
 407 v:2:PC_REGNUM:int:pc_regnum::::0:-1
 408 v:2:FP0_REGNUM:int:fp0_regnum::::0:-1::0
 409 v:2:NPC_REGNUM:int:npc_regnum::::0:-1::0
 410 v:2:NNPC_REGNUM:int:nnpc_regnum::::0:-1::0
 411 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
 412 f:2:STAB_REG_TO_REGNUM:int:stab_reg_to_regnum:int stab_regnr:stab_regnr:::no_op_reg_to_regnum::0
 413 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
 414 f:2:ECOFF_REG_TO_REGNUM:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr:::no_op_reg_to_regnum::0
 415 # Provide a default mapping from a DWARF register number to a gdb REGNUM.
 416 f:2:DWARF_REG_TO_REGNUM:int:dwarf_reg_to_regnum:int dwarf_regnr:dwarf_regnr:::no_op_reg_to_regnum::0
 417 # Convert from an sdb register number to an internal gdb register number.
 418 # This should be defined in tm.h, if REGISTER_NAMES is not set up
 419 # to map one to one onto the sdb register numbers.
 420 f:2:SDB_REG_TO_REGNUM:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr:::no_op_reg_to_regnum::0
 421 f:2:DWARF2_REG_TO_REGNUM:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr:::no_op_reg_to_regnum::0
 422 f:2:REGISTER_NAME:char *:register_name:int regnr:regnr:::legacy_register_name::0
 423 v:2:REGISTER_SIZE:int:register_size::::0:-1
 424 v:2:REGISTER_BYTES:int:register_bytes::::0:-1
 425 f:2:REGISTER_BYTE:int:register_byte:int reg_nr:reg_nr::0:0
 426 f:2:REGISTER_RAW_SIZE:int:register_raw_size:int reg_nr:reg_nr::0:0
 427 v:2:MAX_REGISTER_RAW_SIZE:int:max_register_raw_size::::0:-1
 428 f:2:REGISTER_VIRTUAL_SIZE:int:register_virtual_size:int reg_nr:reg_nr::0:0
 429 v:2:MAX_REGISTER_VIRTUAL_SIZE:int:max_register_virtual_size::::0:-1
 430 f:2:REGISTER_VIRTUAL_TYPE:struct type *:register_virtual_type:int reg_nr:reg_nr::0:0
 431 f:2:DO_REGISTERS_INFO:void:do_registers_info:int reg_nr, int fpregs:reg_nr, fpregs:::do_registers_info::0
 432 # MAP a GDB RAW register number onto a simulator register number.  See
 433 # also include/...-sim.h.
 434 f:2:REGISTER_SIM_REGNO:int:register_sim_regno:int reg_nr:reg_nr:::default_register_sim_regno::0
 435 F:2:REGISTER_BYTES_OK:int:register_bytes_ok:long nr_bytes:nr_bytes::0:0
 436 f:2:CANNOT_FETCH_REGISTER:int:cannot_fetch_register:int regnum:regnum:::cannot_register_not::0
 437 f:2:CANNOT_STORE_REGISTER:int:cannot_store_register:int regnum:regnum:::cannot_register_not::0
 438 #
 439 v:1:USE_GENERIC_DUMMY_FRAMES:int:use_generic_dummy_frames::::0:-1
 440 v:2:CALL_DUMMY_LOCATION:int:call_dummy_location::::0:0
 441 f:2:CALL_DUMMY_ADDRESS:CORE_ADDR:call_dummy_address:void:::0:0::gdbarch->call_dummy_location == AT_ENTRY_POINT && gdbarch->call_dummy_address == 0
 442 v:2:CALL_DUMMY_START_OFFSET:CORE_ADDR:call_dummy_start_offset::::0:-1:::0x%08lx
 443 v:2:CALL_DUMMY_BREAKPOINT_OFFSET:CORE_ADDR:call_dummy_breakpoint_offset::::0:-1::gdbarch->call_dummy_breakpoint_offset_p && gdbarch->call_dummy_breakpoint_offset == -1:0x%08lx::CALL_DUMMY_BREAKPOINT_OFFSET_P
 444 v:1:CALL_DUMMY_BREAKPOINT_OFFSET_P:int:call_dummy_breakpoint_offset_p::::0:-1
 445 v:2:CALL_DUMMY_LENGTH:int:call_dummy_length::::0:-1:::::CALL_DUMMY_LOCATION == BEFORE_TEXT_END || CALL_DUMMY_LOCATION == AFTER_TEXT_END
 446 f:2:PC_IN_CALL_DUMMY:int:pc_in_call_dummy:CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address:pc, sp, frame_address::0:0
 447 v:1:CALL_DUMMY_P:int:call_dummy_p::::0:-1
 448 v:2:CALL_DUMMY_WORDS:LONGEST *:call_dummy_words::::0:legacy_call_dummy_words::0:0x%08lx
 449 v:2:SIZEOF_CALL_DUMMY_WORDS:int:sizeof_call_dummy_words::::0:legacy_sizeof_call_dummy_words::0:0x%08lx
 450 v:1:CALL_DUMMY_STACK_ADJUST_P:int:call_dummy_stack_adjust_p::::0:-1:::0x%08lx
 451 v:2:CALL_DUMMY_STACK_ADJUST:int:call_dummy_stack_adjust::::0:::gdbarch->call_dummy_stack_adjust_p && gdbarch->call_dummy_stack_adjust == 0:0x%08lx::CALL_DUMMY_STACK_ADJUST_P
 452 f:2:FIX_CALL_DUMMY:void:fix_call_dummy:char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, struct value **args, struct type *type, int gcc_p:dummy, pc, fun, nargs, args, type, gcc_p:::0
 453 f:2:INIT_FRAME_PC_FIRST:void:init_frame_pc_first:int fromleaf, struct frame_info *prev:fromleaf, prev:::init_frame_pc_noop::0
 454 f:2:INIT_FRAME_PC:void:init_frame_pc:int fromleaf, struct frame_info *prev:fromleaf, prev:::init_frame_pc_default::0
 455 #
 456 v:2:BELIEVE_PCC_PROMOTION:int:believe_pcc_promotion:::::::
 457 v:2:BELIEVE_PCC_PROMOTION_TYPE:int:believe_pcc_promotion_type:::::::
 458 f:2:COERCE_FLOAT_TO_DOUBLE:int:coerce_float_to_double:struct type *formal, struct type *actual:formal, actual:::default_coerce_float_to_double::0
 459 f:1:GET_SAVED_REGISTER:void:get_saved_register:char *raw_buffer, int *optimized, CORE_ADDR *addrp, struct frame_info *frame, int regnum, enum lval_type *lval:raw_buffer, optimized, addrp, frame, regnum, lval::generic_get_saved_register:0
 460 #
 461 f:1:REGISTER_CONVERTIBLE:int:register_convertible:int nr:nr:::generic_register_convertible_not::0
 462 f:2:REGISTER_CONVERT_TO_VIRTUAL:void:register_convert_to_virtual:int regnum, struct type *type, char *from, char *to:regnum, type, from, to:::0::0
 463 f:2:REGISTER_CONVERT_TO_RAW:void:register_convert_to_raw:struct type *type, int regnum, char *from, char *to:type, regnum, from, to:::0::0
 464 # This function is called when the value of a pseudo-register needs to
 465 # be updated.  Typically it will be defined on a per-architecture
 466 # basis.
 467 f:2:FETCH_PSEUDO_REGISTER:void:fetch_pseudo_register:int regnum:regnum:::0::0
 468 # This function is called when the value of a pseudo-register needs to
 469 # be set or stored.  Typically it will be defined on a
 470 # per-architecture basis.
 471 f:2:STORE_PSEUDO_REGISTER:void:store_pseudo_register:int regnum:regnum:::0::0
 472 #
 473 f:2:POINTER_TO_ADDRESS:CORE_ADDR:pointer_to_address:struct type *type, void *buf:type, buf:::unsigned_pointer_to_address::0
 474 f:2:ADDRESS_TO_POINTER:void:address_to_pointer:struct type *type, void *buf, CORE_ADDR addr:type, buf, addr:::unsigned_address_to_pointer::0
 475 F:2:INTEGER_TO_ADDRESS:CORE_ADDR:integer_to_address:struct type *type, void *buf:type, buf
 476 #
 477 f:2:RETURN_VALUE_ON_STACK:int:return_value_on_stack:struct type *type:type:::generic_return_value_on_stack_not::0
 478 f:2:EXTRACT_RETURN_VALUE:void:extract_return_value:struct type *type, char *regbuf, char *valbuf:type, regbuf, valbuf::0:0
 479 f:1:PUSH_ARGUMENTS:CORE_ADDR:push_arguments:int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr:nargs, args, sp, struct_return, struct_addr::0:0
 480 f:2:PUSH_DUMMY_FRAME:void:push_dummy_frame:void:-:::0
 481 f:1:PUSH_RETURN_ADDRESS:CORE_ADDR:push_return_address:CORE_ADDR pc, CORE_ADDR sp:pc, sp:::0
 482 f:2:POP_FRAME:void:pop_frame:void:-:::0
 483 #
 484 f:2:STORE_STRUCT_RETURN:void:store_struct_return:CORE_ADDR addr, CORE_ADDR sp:addr, sp:::0
 485 f:2:STORE_RETURN_VALUE:void:store_return_value:struct type *type, char *valbuf:type, valbuf:::0
 486 F:2:EXTRACT_STRUCT_VALUE_ADDRESS:CORE_ADDR:extract_struct_value_address:char *regbuf:regbuf:::0
 487 f:2:USE_STRUCT_CONVENTION:int:use_struct_convention:int gcc_p, struct type *value_type:gcc_p, value_type:::0
 488 #
 489 f:2:FRAME_INIT_SAVED_REGS:void:frame_init_saved_regs:struct frame_info *frame:frame::0:0
 490 f:2:INIT_EXTRA_FRAME_INFO:void:init_extra_frame_info:int fromleaf, struct frame_info *frame:fromleaf, frame:::0
 491 #
 492 f:2:SKIP_PROLOGUE:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip::0:0
 493 f:2:PROLOGUE_FRAMELESS_P:int:prologue_frameless_p:CORE_ADDR ip:ip::0:generic_prologue_frameless_p::0
 494 f:2:INNER_THAN:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs::0:0
 495 f:2:BREAKPOINT_FROM_PC:unsigned char *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr:::legacy_breakpoint_from_pc::0
 496 f:2:MEMORY_INSERT_BREAKPOINT:int:memory_insert_breakpoint:CORE_ADDR addr, char *contents_cache:addr, contents_cache::0:default_memory_insert_breakpoint::0
 497 f:2:MEMORY_REMOVE_BREAKPOINT:int:memory_remove_breakpoint:CORE_ADDR addr, char *contents_cache:addr, contents_cache::0:default_memory_remove_breakpoint::0
 498 v:2:DECR_PC_AFTER_BREAK:CORE_ADDR:decr_pc_after_break::::0:-1
 499 f::PREPARE_TO_PROCEED:int:prepare_to_proceed:int select_it:select_it::0:default_prepare_to_proceed::0
 500 v:2:FUNCTION_START_OFFSET:CORE_ADDR:function_start_offset::::0:-1
 501 #
 502 f:2:REMOTE_TRANSLATE_XFER_ADDRESS:void:remote_translate_xfer_address:CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len:gdb_addr, gdb_len, rem_addr, rem_len:::generic_remote_translate_xfer_address::0
 503 #
 504 v:2:FRAME_ARGS_SKIP:CORE_ADDR:frame_args_skip::::0:-1
 505 f:2:FRAMELESS_FUNCTION_INVOCATION:int:frameless_function_invocation:struct frame_info *fi:fi:::generic_frameless_function_invocation_not::0
 506 f:2:FRAME_CHAIN:CORE_ADDR:frame_chain:struct frame_info *frame:frame::0:0
 507 f:1:FRAME_CHAIN_VALID:int:frame_chain_valid:CORE_ADDR chain, struct frame_info *thisframe:chain, thisframe::0:0
 508 f:2:FRAME_SAVED_PC:CORE_ADDR:frame_saved_pc:struct frame_info *fi:fi::0:0
 509 f:2:FRAME_ARGS_ADDRESS:CORE_ADDR:frame_args_address:struct frame_info *fi:fi::0:0
 510 f:2:FRAME_LOCALS_ADDRESS:CORE_ADDR:frame_locals_address:struct frame_info *fi:fi::0:0
 511 f:2:SAVED_PC_AFTER_CALL:CORE_ADDR:saved_pc_after_call:struct frame_info *frame:frame::0:0
 512 f:2:FRAME_NUM_ARGS:int:frame_num_args:struct frame_info *frame:frame::0:0
 513 #
 514 F:2:STACK_ALIGN:CORE_ADDR:stack_align:CORE_ADDR sp:sp::0:0
 515 v:1:EXTRA_STACK_ALIGNMENT_NEEDED:int:extra_stack_alignment_needed::::0:1::0:::
 516 F:2:REG_STRUCT_HAS_ADDR:int:reg_struct_has_addr:int gcc_p, struct type *type:gcc_p, type::0:0
 517 F:2:SAVE_DUMMY_FRAME_TOS:void:save_dummy_frame_tos:CORE_ADDR sp:sp::0:0
 518 v:2:PARM_BOUNDARY:int:parm_boundary
 519 #
 520 v:2:TARGET_FLOAT_FORMAT:const struct floatformat *:float_format::::::default_float_format (gdbarch)
 521 v:2:TARGET_DOUBLE_FORMAT:const struct floatformat *:double_format::::::default_double_format (gdbarch)
 522 v:2:TARGET_LONG_DOUBLE_FORMAT:const struct floatformat *:long_double_format::::::&floatformat_unknown
 523 f:2:CONVERT_FROM_FUNC_PTR_ADDR:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr:addr:::core_addr_identity::0
 524 # On some machines there are bits in addresses which are not really
 525 # part of the address, but are used by the kernel, the hardware, etc.
 526 # for special purposes.  ADDR_BITS_REMOVE takes out any such bits so
 527 # we get a "real" address such as one would find in a symbol table.
 528 # This is used only for addresses of instructions, and even then I'm
 529 # not sure it's used in all contexts.  It exists to deal with there
 530 # being a few stray bits in the PC which would mislead us, not as some
 531 # sort of generic thing to handle alignment or segmentation (it's
 532 # possible it should be in TARGET_READ_PC instead).
 533 f:2:ADDR_BITS_REMOVE:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr:::core_addr_identity::0
 534 # FIXME/cagney/2001-01-18: This should be split in two.  A target method that indicates if
 535 # the target needs software single step.  An ISA method to implement it.
 536 #
 537 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts breakpoints
 538 # using the breakpoint system instead of blatting memory directly (as with rs6000).
 539 #
 540 # FIXME/cagney/2001-01-18: The logic is backwards.  It should be asking if the target can
 541 # single step.  If not, then implement single step using breakpoints.
 542 F:2:SOFTWARE_SINGLE_STEP:void:software_single_step:enum target_signal sig, int insert_breakpoints_p:sig, insert_breakpoints_p::0:0
 543 f:2:TARGET_PRINT_INSN:int:print_insn:bfd_vma vma, disassemble_info *info:vma, info:::legacy_print_insn::0
 544 f:2:SKIP_TRAMPOLINE_CODE:CORE_ADDR:skip_trampoline_code:CORE_ADDR pc:pc:::generic_skip_trampoline_code::0
 545 # For SVR4 shared libraries, each call goes through a small piece of
 546 # trampoline code in the ".plt" section.  IN_SOLIB_CALL_TRAMPOLINE evaluates
 547 # to nonzero if we are current stopped in one of these.
 548 f:2:IN_SOLIB_CALL_TRAMPOLINE:int:in_solib_call_trampoline:CORE_ADDR pc, char *name:pc, name:::generic_in_solib_call_trampoline::0
 549 EOF
 550 }
 551
 552 #
 553 # The .log file
 554 #
 555 exec > new-gdbarch.log
 556 function_list | while do_read
 557 do
 558     cat <<EOF
 559 ${class} ${macro}(${actual})
 560   ${returntype} ${function} ($formal)${attrib}
 561 EOF
 562     for r in ${read}
 563     do
 564         eval echo \"\ \ \ \ ${r}=\${${r}}\"
 565     done
 566 #    #fallbackdefault=${fallbackdefault}
 567 #    #valid_p=${valid_p}
 568 #EOF
 569     if class_is_predicate_p && fallback_default_p
 570     then
 571         echo "Error: predicate function ${macro} can not have a non- multi-arch default" 1>&2
 572         kill $$
 573         exit 1
 574     fi
 575     if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
 576     then
 577         echo "Error: postdefault is useless when invalid_p=0" 1>&2
 578         kill $$
 579         exit 1
 580     fi
 581     echo ""
 582 done
 583
 584 exec 1>&2
 585 compare_new gdbarch.log
 586
 587
 588 copyright ()
 589 {
 590 cat <<EOF
 591 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
 592
 593 /* Dynamic architecture support for GDB, the GNU debugger.
 594    Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
 595
 596    This file is part of GDB.
 597
 598    This program is free software; you can redistribute it and/or modify
 599    it under the terms of the GNU General Public License as published by
 600    the Free Software Foundation; either version 2 of the License, or
 601    (at your option) any later version.
 602
 603    This program is distributed in the hope that it will be useful,
 604    but WITHOUT ANY WARRANTY; without even the implied warranty of
 605    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 606    GNU General Public License for more details.
 607
 608    You should have received a copy of the GNU General Public License
 609    along with this program; if not, write to the Free Software
 610    Foundation, Inc., 59 Temple Place - Suite 330,
 611    Boston, MA 02111-1307, USA.  */
 612
 613 /* This file was created with the aid of \`\`gdbarch.sh''.
 614
 615    The Bourne shell script \`\`gdbarch.sh'' creates the files
 616    \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
 617    against the existing \`\`gdbarch.[hc]''.  Any differences found
 618    being reported.
 619
 620    If editing this file, please also run gdbarch.sh and merge any
 621    changes into that script. Conversely, when making sweeping changes
 622    to this file, modifying gdbarch.sh and using its output may prove
 623    easier. */
 624
 625 EOF
 626 }
 627
 628 #
 629 # The .h file
 630 #
 631
 632 exec > new-gdbarch.h
 633 copyright
 634 cat <<EOF
 635 #ifndef GDBARCH_H
 636 #define GDBARCH_H
 637
 638 #include "dis-asm.h" /* Get defs for disassemble_info, which unfortunately is a typedef. */
 639 #if !GDB_MULTI_ARCH
 640 #include "value.h" /* For default_coerce_float_to_double which is referenced by a macro.  */
 641 #endif
 642
 643 struct frame_info;
 644 struct value;
 645
 646
 647 extern struct gdbarch *current_gdbarch;
 648
 649
 650 /* If any of the following are defined, the target wasn't correctly
 651    converted. */
 652
 653 #if GDB_MULTI_ARCH
 654 #if defined (EXTRA_FRAME_INFO)
 655 #error "EXTRA_FRAME_INFO: replaced by struct frame_extra_info"
 656 #endif
 657 #endif
 658
 659 #if GDB_MULTI_ARCH
 660 #if defined (FRAME_FIND_SAVED_REGS)
 661 #error "FRAME_FIND_SAVED_REGS: replaced by FRAME_INIT_SAVED_REGS"
 662 #endif
 663 #endif
 664
 665 #if (GDB_MULTI_ARCH >= GDB_MULTI_ARCH_PURE) && defined (GDB_TM_FILE)
 666 #error "GDB_TM_FILE: Pure multi-arch targets do not have a tm.h file."
 667 #endif
 668 EOF
 669
 670 # function typedef's
 671 printf "\n"
 672 printf "\n"
 673 printf "/* The following are pre-initialized by GDBARCH. */\n"
 674 function_list | while do_read
 675 do
 676     if class_is_info_p
 677     then
 678         printf "\n"
 679         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 680         printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
 681         printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) && defined (${macro})\n"
 682         printf "#error \"Non multi-arch definition of ${macro}\"\n"
 683         printf "#endif\n"
 684         printf "#if GDB_MULTI_ARCH\n"
 685         printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (${macro})\n"
 686         printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 687         printf "#endif\n"
 688         printf "#endif\n"
 689     fi
 690 done
 691
 692 # function typedef's
 693 printf "\n"
 694 printf "\n"
 695 printf "/* The following are initialized by the target dependent code. */\n"
 696 function_list | while do_read
 697 do
 698     if [ -n "${comment}" ]
 699     then
 700         echo "${comment}" | sed \
 701             -e '2 s,#,/*,' \
 702             -e '3,$ s,#,  ,' \
 703             -e '$ s,$, */,'
 704     fi
 705     if class_is_multiarch_p
 706     then
 707         if class_is_predicate_p
 708         then
 709             printf "\n"
 710             printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 711         fi
 712     else
 713         if class_is_predicate_p
 714         then
 715             printf "\n"
 716             printf "#if defined (${macro})\n"
 717             printf "/* Legacy for systems yet to multi-arch ${macro} */\n"
 718             #printf "#if (GDB_MULTI_ARCH <= GDB_MULTI_ARCH_PARTIAL) && defined (${macro})\n"
 719             printf "#if !defined (${macro}_P)\n"
 720             printf "#define ${macro}_P() (1)\n"
 721             printf "#endif\n"
 722             printf "#endif\n"
 723             printf "\n"
 724             printf "/* Default predicate for non- multi-arch targets. */\n"
 725             printf "#if (!GDB_MULTI_ARCH) && !defined (${macro}_P)\n"
 726             printf "#define ${macro}_P() (0)\n"
 727             printf "#endif\n"
 728             printf "\n"
 729             printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
 730             printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) && defined (${macro}_P)\n"
 731             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 732             printf "#endif\n"
 733             printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (${macro}_P)\n"
 734             printf "#define ${macro}_P() (gdbarch_${function}_p (current_gdbarch))\n"
 735             printf "#endif\n"
 736         fi
 737     fi
 738     if class_is_variable_p
 739     then
 740         if fallback_default_p || class_is_predicate_p
 741         then
 742             printf "\n"
 743             printf "/* Default (value) for non- multi-arch platforms. */\n"
 744             printf "#if (!GDB_MULTI_ARCH) && !defined (${macro})\n"
 745             echo "#define ${macro} (${fallbackdefault})" \
 746                 | sed -e 's/\([^a-z_]\)\(gdbarch[^a-z_]\)/\1current_\2/g'
 747             printf "#endif\n"
 748         fi
 749         printf "\n"
 750         printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 751         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
 752         printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) && defined (${macro})\n"
 753         printf "#error \"Non multi-arch definition of ${macro}\"\n"
 754         printf "#endif\n"
 755         printf "#if GDB_MULTI_ARCH\n"
 756         printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (${macro})\n"
 757         printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 758         printf "#endif\n"
 759         printf "#endif\n"
 760     fi
 761     if class_is_function_p
 762     then
 763         if class_is_multiarch_p ; then :
 764         elif fallback_default_p || class_is_predicate_p
 765         then
 766             printf "\n"
 767             printf "/* Default (function) for non- multi-arch platforms. */\n"
 768             printf "#if (!GDB_MULTI_ARCH) && !defined (${macro})\n"
 769             if [ "x${fallbackdefault}" = "x0" ]
 770             then
 771                 printf "#define ${macro}(${actual}) (internal_error (__FILE__, __LINE__, \"${macro}\"), 0)\n"
 772             else
 773                 # FIXME: Should be passing current_gdbarch through!
 774                 echo "#define ${macro}(${actual}) (${fallbackdefault} (${actual}))" \
 775                     | sed -e 's/\([^a-z_]\)\(gdbarch[^a-z_]\)/\1current_\2/g'
 776             fi
 777             printf "#endif\n"
 778         fi
 779         printf "\n"
 780         if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
 781         then
 782             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
 783         elif class_is_multiarch_p
 784         then
 785             printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
 786         else
 787             printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
 788         fi
 789         if [ "x${formal}" = "xvoid" ]
 790         then
 791           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
 792         else
 793           printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
 794         fi
 795         printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
 796         if class_is_multiarch_p ; then :
 797         else
 798             printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) && defined (${macro})\n"
 799             printf "#error \"Non multi-arch definition of ${macro}\"\n"
 800             printf "#endif\n"
 801             printf "#if GDB_MULTI_ARCH\n"
 802             printf "#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (${macro})\n"
 803             if [ "x${actual}" = "x" ]
 804             then
 805                 printf "#define ${macro}() (gdbarch_${function} (current_gdbarch))\n"
 806             elif [ "x${actual}" = "x-" ]
 807             then
 808                 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
 809             else
 810                 printf "#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))\n"
 811             fi
 812             printf "#endif\n"
 813             printf "#endif\n"
 814         fi
 815     fi
 816 done
 817
 818 # close it off
 819 cat <<EOF
 820
 821 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
 822
 823
 824 /* Mechanism for co-ordinating the selection of a specific
 825    architecture.
 826
 827    GDB targets (*-tdep.c) can register an interest in a specific
 828    architecture.  Other GDB components can register a need to maintain
 829    per-architecture data.
 830
 831    The mechanisms below ensures that there is only a loose connection
 832    between the set-architecture command and the various GDB
 833    components.  Each component can independently register their need
 834    to maintain architecture specific data with gdbarch.
 835
 836    Pragmatics:
 837
 838    Previously, a single TARGET_ARCHITECTURE_HOOK was provided.  It
 839    didn't scale.
 840
 841    The more traditional mega-struct containing architecture specific
 842    data for all the various GDB components was also considered.  Since
 843    GDB is built from a variable number of (fairly independent)
 844    components it was determined that the global aproach was not
 845    applicable. */
 846
 847
 848 /* Register a new architectural family with GDB.
 849
 850    Register support for the specified ARCHITECTURE with GDB.  When
 851    gdbarch determines that the specified architecture has been
 852    selected, the corresponding INIT function is called.
 853
 854    --
 855
 856    The INIT function takes two parameters: INFO which contains the
 857    information available to gdbarch about the (possibly new)
 858    architecture; ARCHES which is a list of the previously created
 859    \`\`struct gdbarch'' for this architecture.
 860
 861    The INIT function parameter INFO shall, as far as possible, be
 862    pre-initialized with information obtained from INFO.ABFD or
 863    previously selected architecture (if similar).  INIT shall ensure
 864    that the INFO.BYTE_ORDER is non-zero.
 865
 866    The INIT function shall return any of: NULL - indicating that it
 867    doesn't recognize the selected architecture; an existing \`\`struct
 868    gdbarch'' from the ARCHES list - indicating that the new
 869    architecture is just a synonym for an earlier architecture (see
 870    gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
 871    - that describes the selected architecture (see gdbarch_alloc()).
 872
 873    The DUMP_TDEP function shall print out all target specific values.
 874    Care should be taken to ensure that the function works in both the
 875    multi-arch and non- multi-arch cases. */
 876
 877 struct gdbarch_list
 878 {
 879   struct gdbarch *gdbarch;
 880   struct gdbarch_list *next;
 881 };
 882
 883 struct gdbarch_info
 884 {
 885   /* Use default: NULL (ZERO). */
 886   const struct bfd_arch_info *bfd_arch_info;
 887
 888   /* Use default: 0 (ZERO). */
 889   int byte_order;
 890
 891   /* Use default: NULL (ZERO). */
 892   bfd *abfd;
 893
 894   /* Use default: NULL (ZERO). */
 895   struct gdbarch_tdep_info *tdep_info;
 896 };
 897
 898 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
 899 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
 900
 901 /* DEPRECATED - use gdbarch_register() */
 902 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
 903
 904 extern void gdbarch_register (enum bfd_architecture architecture,
 905                               gdbarch_init_ftype *,
 906                               gdbarch_dump_tdep_ftype *);
 907
 908
 909 /* Return a freshly allocated, NULL terminated, array of the valid
 910    architecture names.  Since architectures are registered during the
 911    _initialize phase this function only returns useful information
 912    once initialization has been completed. */
 913
 914 extern const char **gdbarch_printable_names (void);
 915
 916
 917 /* Helper function.  Search the list of ARCHES for a GDBARCH that
 918    matches the information provided by INFO. */
 919
 920 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches,  const struct gdbarch_info *info);
 921
 922
 923 /* Helper function.  Create a preliminary \`\`struct gdbarch''.  Perform
 924    basic initialization using values obtained from the INFO andTDEP
 925    parameters.  set_gdbarch_*() functions are called to complete the
 926    initialization of the object. */
 927
 928 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
 929
 930
 931 /* Helper function.  Free a partially-constructed \`\`struct gdbarch''.
 932    It is assumed that the caller freeds the \`\`struct
 933    gdbarch_tdep''. */
 934
 935 extern void gdbarch_free (struct gdbarch *);
 936
 937
 938 /* Helper function. Force an update of the current architecture.
 939
 940    The actual architecture selected is determined by INFO, \`\`(gdb) set
 941    architecture'' et.al., the existing architecture and BFD's default
 942    architecture.  INFO should be initialized to zero and then selected
 943    fields should be updated.
 944
 945    Returns non-zero if the update succeeds */
 946
 947 extern int gdbarch_update_p (struct gdbarch_info info);
 948
 949
 950
 951 /* Register per-architecture data-pointer.
 952
 953    Reserve space for a per-architecture data-pointer.  An identifier
 954    for the reserved data-pointer is returned.  That identifer should
 955    be saved in a local static variable.
 956
 957    The per-architecture data-pointer can be initialized in one of two
 958    ways: The value can be set explicitly using a call to
 959    set_gdbarch_data(); the value can be set implicitly using the value
 960    returned by a non-NULL INIT() callback.  INIT(), when non-NULL is
 961    called after the basic architecture vector has been created.
 962
 963    When a previously created architecture is re-selected, the
 964    per-architecture data-pointer for that previous architecture is
 965    restored.  INIT() is not called.
 966
 967    During initialization, multiple assignments of the data-pointer are
 968    allowed, non-NULL values are deleted by calling FREE().  If the
 969    architecture is deleted using gdbarch_free() all non-NULL data
 970    pointers are also deleted using FREE().
 971
 972    Multiple registrarants for any architecture are allowed (and
 973    strongly encouraged).  */
 974
 975 struct gdbarch_data;
 976
 977 typedef void *(gdbarch_data_init_ftype) (struct gdbarch *gdbarch);
 978 typedef void (gdbarch_data_free_ftype) (struct gdbarch *gdbarch,
 979                                         void *pointer);
 980 extern struct gdbarch_data *register_gdbarch_data (gdbarch_data_init_ftype *init,
 981                                                    gdbarch_data_free_ftype *free);
 982 extern void set_gdbarch_data (struct gdbarch *gdbarch,
 983                               struct gdbarch_data *data,
 984                               void *pointer);
 985
 986 extern void *gdbarch_data (struct gdbarch_data*);
 987
 988
 989 /* Register per-architecture memory region.
 990
 991    Provide a memory-region swap mechanism.  Per-architecture memory
 992    region are created.  These memory regions are swapped whenever the
 993    architecture is changed.  For a new architecture, the memory region
 994    is initialized with zero (0) and the INIT function is called.
 995
 996    Memory regions are swapped / initialized in the order that they are
 997    registered.  NULL DATA and/or INIT values can be specified.
 998
 999    New code should use register_gdbarch_data(). */
1000
1001 typedef void (gdbarch_swap_ftype) (void);
1002 extern void register_gdbarch_swap (void *data, unsigned long size, gdbarch_swap_ftype *init);
1003 #define REGISTER_GDBARCH_SWAP(VAR) register_gdbarch_swap (&(VAR), sizeof ((VAR)), NULL)
1004
1005
1006
1007 /* The target-system-dependent byte order is dynamic */
1008
1009 /* TARGET_BYTE_ORDER_SELECTABLE_P determines if the target endianness
1010    is selectable at runtime.  The user can use the \`\`set endian''
1011    command to change it.  TARGET_BYTE_ORDER_AUTO is nonzero when
1012    target_byte_order should be auto-detected (from the program image
1013    say). */
1014
1015 #if GDB_MULTI_ARCH
1016 /* Multi-arch GDB is always bi-endian. */
1017 #define TARGET_BYTE_ORDER_SELECTABLE_P 1
1018 #endif
1019
1020 #ifndef TARGET_BYTE_ORDER_SELECTABLE_P
1021 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SLECTABLE
1022    when they should have defined TARGET_BYTE_ORDER_SELECTABLE_P 1 */
1023 #ifdef TARGET_BYTE_ORDER_SELECTABLE
1024 #define TARGET_BYTE_ORDER_SELECTABLE_P 1
1025 #else
1026 #define TARGET_BYTE_ORDER_SELECTABLE_P 0
1027 #endif
1028 #endif
1029
1030 extern int target_byte_order;
1031 #ifdef TARGET_BYTE_ORDER_SELECTABLE
1032 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SELECTABLE
1033    and expect defs.h to re-define TARGET_BYTE_ORDER. */
1034 #undef TARGET_BYTE_ORDER
1035 #endif
1036 #ifndef TARGET_BYTE_ORDER
1037 #define TARGET_BYTE_ORDER (target_byte_order + 0)
1038 #endif
1039
1040 extern int target_byte_order_auto;
1041 #ifndef TARGET_BYTE_ORDER_AUTO
1042 #define TARGET_BYTE_ORDER_AUTO (target_byte_order_auto + 0)
1043 #endif
1044
1045
1046
1047 /* The target-system-dependent BFD architecture is dynamic */
1048
1049 extern int target_architecture_auto;
1050 #ifndef TARGET_ARCHITECTURE_AUTO
1051 #define TARGET_ARCHITECTURE_AUTO (target_architecture_auto + 0)
1052 #endif
1053
1054 extern const struct bfd_arch_info *target_architecture;
1055 #ifndef TARGET_ARCHITECTURE
1056 #define TARGET_ARCHITECTURE (target_architecture + 0)
1057 #endif
1058
1059
1060 /* The target-system-dependent disassembler is semi-dynamic */
1061
1062 extern int dis_asm_read_memory (bfd_vma memaddr, bfd_byte *myaddr,
1063                                 unsigned int len, disassemble_info *info);
1064
1065 extern void dis_asm_memory_error (int status, bfd_vma memaddr,
1066                                   disassemble_info *info);
1067
1068 extern void dis_asm_print_address (bfd_vma addr,
1069                                    disassemble_info *info);
1070
1071 extern int (*tm_print_insn) (bfd_vma, disassemble_info*);
1072 extern disassemble_info tm_print_insn_info;
1073 #ifndef TARGET_PRINT_INSN_INFO
1074 #define TARGET_PRINT_INSN_INFO (&tm_print_insn_info)
1075 #endif
1076
1077
1078
1079 /* Set the dynamic target-system-dependent parameters (architecture,
1080    byte-order, ...) using information found in the BFD */
1081
1082 extern void set_gdbarch_from_file (bfd *);
1083
1084
1085 /* Initialize the current architecture to the "first" one we find on
1086    our list.  */
1087
1088 extern void initialize_current_architecture (void);
1089
1090 /* For non-multiarched targets, do any initialization of the default
1091    gdbarch object necessary after the _initialize_MODULE functions
1092    have run.  */
1093 extern void initialize_non_multiarch ();
1094
1095 /* gdbarch trace variable */
1096 extern int gdbarch_debug;
1097
1098 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1099
1100 #endif
1101 EOF
1102 exec 1>&2
1103 #../move-if-change new-gdbarch.h gdbarch.h
1104 compare_new gdbarch.h
1105
1106
1107 #
1108 # C file
1109 #
1110
1111 exec > new-gdbarch.c
1112 copyright
1113 cat <<EOF
1114
1115 #include "defs.h"
1116 #include "arch-utils.h"
1117
1118 #if GDB_MULTI_ARCH
1119 #include "gdbcmd.h"
1120 #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
1121 #else
1122 /* Just include everything in sight so that the every old definition
1123    of macro is visible. */
1124 #include "gdb_string.h"
1125 #include <ctype.h>
1126 #include "symtab.h"
1127 #include "frame.h"
1128 #include "inferior.h"
1129 #include "breakpoint.h"
1130 #include "gdb_wait.h"
1131 #include "gdbcore.h"
1132 #include "gdbcmd.h"
1133 #include "target.h"
1134 #include "gdbthread.h"
1135 #include "annotate.h"
1136 #include "symfile.h"            /* for overlay functions */
1137 #include "value.h"              /* For old tm.h/nm.h macros.  */
1138 #endif
1139 #include "symcat.h"
1140
1141 #include "floatformat.h"
1142
1143 #include "gdb_assert.h"
1144 #include "gdb-events.h"
1145
1146 /* Static function declarations */
1147
1148 static void verify_gdbarch (struct gdbarch *gdbarch);
1149 static void alloc_gdbarch_data (struct gdbarch *);
1150 static void init_gdbarch_data (struct gdbarch *);
1151 static void free_gdbarch_data (struct gdbarch *);
1152 static void init_gdbarch_swap (struct gdbarch *);
1153 static void swapout_gdbarch_swap (struct gdbarch *);
1154 static void swapin_gdbarch_swap (struct gdbarch *);
1155
1156 /* Convenience macro for allocting typesafe memory. */
1157
1158 #ifndef XMALLOC
1159 #define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
1160 #endif
1161
1162
1163 /* Non-zero if we want to trace architecture code.  */
1164
1165 #ifndef GDBARCH_DEBUG
1166 #define GDBARCH_DEBUG 0
1167 #endif
1168 int gdbarch_debug = GDBARCH_DEBUG;
1169
1170 EOF
1171
1172 # gdbarch open the gdbarch object
1173 printf "\n"
1174 printf "/* Maintain the struct gdbarch object */\n"
1175 printf "\n"
1176 printf "struct gdbarch\n"
1177 printf "{\n"
1178 printf "  /* basic architectural information */\n"
1179 function_list | while do_read
1180 do
1181     if class_is_info_p
1182     then
1183         printf "  ${returntype} ${function};\n"
1184     fi
1185 done
1186 printf "\n"
1187 printf "  /* target specific vector. */\n"
1188 printf "  struct gdbarch_tdep *tdep;\n"
1189 printf "  gdbarch_dump_tdep_ftype *dump_tdep;\n"
1190 printf "\n"
1191 printf "  /* per-architecture data-pointers */\n"
1192 printf "  unsigned nr_data;\n"
1193 printf "  void **data;\n"
1194 printf "\n"
1195 printf "  /* per-architecture swap-regions */\n"
1196 printf "  struct gdbarch_swap *swap;\n"
1197 printf "\n"
1198 cat <<EOF
1199   /* Multi-arch values.
1200
1201      When extending this structure you must:
1202
1203      Add the field below.
1204
1205      Declare set/get functions and define the corresponding
1206      macro in gdbarch.h.
1207
1208      gdbarch_alloc(): If zero/NULL is not a suitable default,
1209      initialize the new field.
1210
1211      verify_gdbarch(): Confirm that the target updated the field
1212      correctly.
1213
1214      gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1215      field is dumped out
1216
1217      \`\`startup_gdbarch()'': Append an initial value to the static
1218      variable (base values on the host's c-type system).
1219
1220      get_gdbarch(): Implement the set/get functions (probably using
1221      the macro's as shortcuts).
1222
1223      */
1224
1225 EOF
1226 function_list | while do_read
1227 do
1228     if class_is_variable_p
1229     then
1230         printf "  ${returntype} ${function};\n"
1231     elif class_is_function_p
1232     then
1233         printf "  gdbarch_${function}_ftype *${function}${attrib};\n"
1234     fi
1235 done
1236 printf "};\n"
1237
1238 # A pre-initialized vector
1239 printf "\n"
1240 printf "\n"
1241 cat <<EOF
1242 /* The default architecture uses host values (for want of a better
1243    choice). */
1244 EOF
1245 printf "\n"
1246 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1247 printf "\n"
1248 printf "struct gdbarch startup_gdbarch =\n"
1249 printf "{\n"
1250 printf "  /* basic architecture information */\n"
1251 function_list | while do_read
1252 do
1253     if class_is_info_p
1254     then
1255         printf "  ${staticdefault},\n"
1256     fi
1257 done
1258 cat <<EOF
1259   /* target specific vector and its dump routine */
1260   NULL, NULL,
1261   /*per-architecture data-pointers and swap regions */
1262   0, NULL, NULL,
1263   /* Multi-arch values */
1264 EOF
1265 function_list | while do_read
1266 do
1267     if class_is_function_p || class_is_variable_p
1268     then
1269         printf "  ${staticdefault},\n"
1270     fi
1271 done
1272 cat <<EOF
1273   /* startup_gdbarch() */
1274 };
1275
1276 struct gdbarch *current_gdbarch = &startup_gdbarch;
1277
1278 /* Do any initialization needed for a non-multiarch configuration
1279    after the _initialize_MODULE functions have been run.  */
1280 void
1281 initialize_non_multiarch ()
1282 {
1283   alloc_gdbarch_data (&startup_gdbarch);
1284   init_gdbarch_data (&startup_gdbarch);
1285 }
1286 EOF
1287
1288 # Create a new gdbarch struct
1289 printf "\n"
1290 printf "\n"
1291 cat <<EOF
1292 /* Create a new \`\`struct gdbarch'' based on information provided by
1293    \`\`struct gdbarch_info''. */
1294 EOF
1295 printf "\n"
1296 cat <<EOF
1297 struct gdbarch *
1298 gdbarch_alloc (const struct gdbarch_info *info,
1299                struct gdbarch_tdep *tdep)
1300 {
1301   /* NOTE: The new architecture variable is named \`\`current_gdbarch''
1302      so that macros such as TARGET_DOUBLE_BIT, when expanded, refer to
1303      the current local architecture and not the previous global
1304      architecture.  This ensures that the new architectures initial
1305      values are not influenced by the previous architecture.  Once
1306      everything is parameterised with gdbarch, this will go away.  */
1307   struct gdbarch *current_gdbarch = XMALLOC (struct gdbarch);
1308   memset (current_gdbarch, 0, sizeof (*current_gdbarch));
1309
1310   alloc_gdbarch_data (current_gdbarch);
1311
1312   current_gdbarch->tdep = tdep;
1313 EOF
1314 printf "\n"
1315 function_list | while do_read
1316 do
1317     if class_is_info_p
1318     then
1319         printf "  current_gdbarch->${function} = info->${function};\n"
1320     fi
1321 done
1322 printf "\n"
1323 printf "  /* Force the explicit initialization of these. */\n"
1324 function_list | while do_read
1325 do
1326     if class_is_function_p || class_is_variable_p
1327     then
1328         if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1329         then
1330           printf "  current_gdbarch->${function} = ${predefault};\n"
1331         fi
1332     fi
1333 done
1334 cat <<EOF
1335   /* gdbarch_alloc() */
1336
1337   return current_gdbarch;
1338 }
1339 EOF
1340
1341 # Free a gdbarch struct.
1342 printf "\n"
1343 printf "\n"
1344 cat <<EOF
1345 /* Free a gdbarch struct.  This should never happen in normal
1346    operation --- once you've created a gdbarch, you keep it around.
1347    However, if an architecture's init function encounters an error
1348    building the structure, it may need to clean up a partially
1349    constructed gdbarch.  */
1350
1351 void
1352 gdbarch_free (struct gdbarch *arch)
1353 {
1354   gdb_assert (arch != NULL);
1355   free_gdbarch_data (arch);
1356   xfree (arch);
1357 }
1358 EOF
1359
1360 # verify a new architecture
1361 printf "\n"
1362 printf "\n"
1363 printf "/* Ensure that all values in a GDBARCH are reasonable. */\n"
1364 printf "\n"
1365 cat <<EOF
1366 static void
1367 verify_gdbarch (struct gdbarch *gdbarch)
1368 {
1369   /* Only perform sanity checks on a multi-arch target. */
1370   if (!GDB_MULTI_ARCH)
1371     return;
1372   /* fundamental */
1373   if (gdbarch->byte_order == 0)
1374     internal_error (__FILE__, __LINE__,
1375                     "verify_gdbarch: byte-order unset");
1376   if (gdbarch->bfd_arch_info == NULL)
1377     internal_error (__FILE__, __LINE__,
1378                     "verify_gdbarch: bfd_arch_info unset");
1379   /* Check those that need to be defined for the given multi-arch level. */
1380 EOF
1381 function_list | while do_read
1382 do
1383     if class_is_function_p || class_is_variable_p
1384     then
1385         if [ "x${invalid_p}" = "x0" ]
1386         then
1387             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1388         elif class_is_predicate_p
1389         then
1390             printf "  /* Skip verify of ${function}, has predicate */\n"
1391         # FIXME: See do_read for potential simplification
1392         elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1393         then
1394             printf "  if (${invalid_p})\n"
1395             printf "    gdbarch->${function} = ${postdefault};\n"
1396         elif [ -n "${predefault}" -a -n "${postdefault}" ]
1397         then
1398             printf "  if (gdbarch->${function} == ${predefault})\n"
1399             printf "    gdbarch->${function} = ${postdefault};\n"
1400         elif [ -n "${postdefault}" ]
1401         then
1402             printf "  if (gdbarch->${function} == 0)\n"
1403             printf "    gdbarch->${function} = ${postdefault};\n"
1404         elif [ -n "${invalid_p}" ]
1405         then
1406             printf "  if ((GDB_MULTI_ARCH >= ${level})\n"
1407             printf "      && (${invalid_p}))\n"
1408             printf "    internal_error (__FILE__, __LINE__,\n"
1409             printf "                    \"gdbarch: verify_gdbarch: ${function} invalid\");\n"
1410         elif [ -n "${predefault}" ]
1411         then
1412             printf "  if ((GDB_MULTI_ARCH >= ${level})\n"
1413             printf "      && (gdbarch->${function} == ${predefault}))\n"
1414             printf "    internal_error (__FILE__, __LINE__,\n"
1415             printf "                    \"gdbarch: verify_gdbarch: ${function} invalid\");\n"
1416         fi
1417     fi
1418 done
1419 cat <<EOF
1420 }
1421 EOF
1422
1423 # dump the structure
1424 printf "\n"
1425 printf "\n"
1426 cat <<EOF
1427 /* Print out the details of the current architecture. */
1428
1429 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1430    just happens to match the global variable \`\`current_gdbarch''.  That
1431    way macros refering to that variable get the local and not the global
1432    version - ulgh.  Once everything is parameterised with gdbarch, this
1433    will go away. */
1434
1435 void
1436 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1437 {
1438   fprintf_unfiltered (file,
1439                       "gdbarch_dump: GDB_MULTI_ARCH = %d\\n",
1440                       GDB_MULTI_ARCH);
1441 EOF
1442 function_list | sort -t: +2 | while do_read
1443 do
1444     # multiarch functions don't have macros.
1445     if class_is_multiarch_p
1446     then
1447         printf "  if (GDB_MULTI_ARCH)\n"
1448         printf "    fprintf_unfiltered (file,\n"
1449         printf "                        \"gdbarch_dump: ${function} = 0x%%08lx\\\\n\",\n"
1450         printf "                        (long) current_gdbarch->${function});\n"
1451         continue
1452     fi
1453     printf "#ifdef ${macro}\n"
1454     if [ "x${returntype}" = "xvoid" ]
1455     then
1456         printf "#if GDB_MULTI_ARCH\n"
1457         printf "  /* Macro might contain \`[{}]' when not multi-arch */\n"
1458     fi
1459     if class_is_function_p
1460     then
1461         printf "  fprintf_unfiltered (file,\n"
1462         printf "                      \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1463         printf "                      \"${macro}(${actual})\",\n"
1464         printf "                      XSTRING (${macro} (${actual})));\n"
1465     else
1466         printf "  fprintf_unfiltered (file,\n"
1467         printf "                      \"gdbarch_dump: ${macro} # %%s\\\\n\",\n"
1468         printf "                      XSTRING (${macro}));\n"
1469     fi
1470     if [ "x${returntype}" = "xvoid" ]
1471     then
1472         printf "#endif\n"
1473     fi
1474     if [ "x${print_p}" = "x()" ]
1475     then
1476         printf "  gdbarch_dump_${function} (current_gdbarch);\n"
1477     elif [ "x${print_p}" = "x0" ]
1478     then
1479         printf "  /* skip print of ${macro}, print_p == 0. */\n"
1480     elif [ -n "${print_p}" ]
1481     then
1482         printf "  if (${print_p})\n"
1483         printf "    fprintf_unfiltered (file,\n"
1484         printf "                        \"gdbarch_dump: ${macro} = %s\\\\n\",\n" "${fmt}"
1485         printf "                        ${print});\n"
1486     elif class_is_function_p
1487     then
1488         printf "  if (GDB_MULTI_ARCH)\n"
1489         printf "    fprintf_unfiltered (file,\n"
1490         printf "                        \"gdbarch_dump: ${macro} = 0x%%08lx\\\\n\",\n"
1491         printf "                        (long) current_gdbarch->${function}\n"
1492         printf "                        /*${macro} ()*/);\n"
1493     else
1494         printf "  fprintf_unfiltered (file,\n"
1495         printf "                      \"gdbarch_dump: ${macro} = %s\\\\n\",\n" "${fmt}"
1496         printf "                      ${print});\n"
1497     fi
1498     printf "#endif\n"
1499 done
1500 cat <<EOF
1501   if (current_gdbarch->dump_tdep != NULL)
1502     current_gdbarch->dump_tdep (current_gdbarch, file);
1503 }
1504 EOF
1505
1506
1507 # GET/SET
1508 printf "\n"
1509 cat <<EOF
1510 struct gdbarch_tdep *
1511 gdbarch_tdep (struct gdbarch *gdbarch)
1512 {
1513   if (gdbarch_debug >= 2)
1514     fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1515   return gdbarch->tdep;
1516 }
1517 EOF
1518 printf "\n"
1519 function_list | while do_read
1520 do
1521     if class_is_predicate_p
1522     then
1523         printf "\n"
1524         printf "int\n"
1525         printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1526         printf "{\n"
1527         if [ -n "${valid_p}" ]
1528         then
1529             printf "  return ${valid_p};\n"
1530         else
1531             printf "#error \"gdbarch_${function}_p: not defined\"\n"
1532         fi
1533         printf "}\n"
1534     fi
1535     if class_is_function_p
1536     then
1537         printf "\n"
1538         printf "${returntype}\n"
1539         if [ "x${formal}" = "xvoid" ]
1540         then
1541           printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1542         else
1543           printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1544         fi
1545         printf "{\n"
1546         printf "  if (gdbarch->${function} == 0)\n"
1547         printf "    internal_error (__FILE__, __LINE__,\n"
1548         printf "                    \"gdbarch: gdbarch_${function} invalid\");\n"
1549         printf "  if (gdbarch_debug >= 2)\n"
1550         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1551         if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1552         then
1553             if class_is_multiarch_p
1554             then
1555                 params="gdbarch"
1556             else
1557                 params=""
1558             fi
1559         else
1560             if class_is_multiarch_p
1561             then
1562                 params="gdbarch, ${actual}"
1563             else
1564                 params="${actual}"
1565             fi
1566         fi
1567         if [ "x${returntype}" = "xvoid" ]
1568         then
1569           printf "  gdbarch->${function} (${params});\n"
1570         else
1571           printf "  return gdbarch->${function} (${params});\n"
1572         fi
1573         printf "}\n"
1574         printf "\n"
1575         printf "void\n"
1576         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1577         printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_${function}_ftype ${function})\n"
1578         printf "{\n"
1579         printf "  gdbarch->${function} = ${function};\n"
1580         printf "}\n"
1581     elif class_is_variable_p
1582     then
1583         printf "\n"
1584         printf "${returntype}\n"
1585         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1586         printf "{\n"
1587         if [ "x${invalid_p}" = "x0" ]
1588         then
1589             printf "  /* Skip verify of ${function}, invalid_p == 0 */\n"
1590         elif [ -n "${invalid_p}" ]
1591         then
1592           printf "  if (${invalid_p})\n"
1593           printf "    internal_error (__FILE__, __LINE__,\n"
1594           printf "                    \"gdbarch: gdbarch_${function} invalid\");\n"
1595         elif [ -n "${predefault}" ]
1596         then
1597           printf "  if (gdbarch->${function} == ${predefault})\n"
1598           printf "    internal_error (__FILE__, __LINE__,\n"
1599           printf "                    \"gdbarch: gdbarch_${function} invalid\");\n"
1600         fi
1601         printf "  if (gdbarch_debug >= 2)\n"
1602         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1603         printf "  return gdbarch->${function};\n"
1604         printf "}\n"
1605         printf "\n"
1606         printf "void\n"
1607         printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1608         printf "            `echo ${function} | sed -e 's/./ /g'`  ${returntype} ${function})\n"
1609         printf "{\n"
1610         printf "  gdbarch->${function} = ${function};\n"
1611         printf "}\n"
1612     elif class_is_info_p
1613     then
1614         printf "\n"
1615         printf "${returntype}\n"
1616         printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1617         printf "{\n"
1618         printf "  if (gdbarch_debug >= 2)\n"
1619         printf "    fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1620         printf "  return gdbarch->${function};\n"
1621         printf "}\n"
1622     fi
1623 done
1624
1625 # All the trailing guff
1626 cat <<EOF
1627
1628
1629 /* Keep a registry of per-architecture data-pointers required by GDB
1630    modules. */
1631
1632 struct gdbarch_data
1633 {
1634   unsigned index;
1635   gdbarch_data_init_ftype *init;
1636   gdbarch_data_free_ftype *free;
1637 };
1638
1639 struct gdbarch_data_registration
1640 {
1641   struct gdbarch_data *data;
1642   struct gdbarch_data_registration *next;
1643 };
1644
1645 struct gdbarch_data_registry
1646 {
1647   unsigned nr;
1648   struct gdbarch_data_registration *registrations;
1649 };
1650
1651 struct gdbarch_data_registry gdbarch_data_registry =
1652 {
1653   0, NULL,
1654 };
1655
1656 struct gdbarch_data *
1657 register_gdbarch_data (gdbarch_data_init_ftype *init,
1658                        gdbarch_data_free_ftype *free)
1659 {
1660   struct gdbarch_data_registration **curr;
1661   for (curr = &gdbarch_data_registry.registrations;
1662        (*curr) != NULL;
1663        curr = &(*curr)->next);
1664   (*curr) = XMALLOC (struct gdbarch_data_registration);
1665   (*curr)->next = NULL;
1666   (*curr)->data = XMALLOC (struct gdbarch_data);
1667   (*curr)->data->index = gdbarch_data_registry.nr++;
1668   (*curr)->data->init = init;
1669   (*curr)->data->free = free;
1670   return (*curr)->data;
1671 }
1672
1673
1674 /* Walk through all the registered users initializing each in turn. */
1675
1676 static void
1677 init_gdbarch_data (struct gdbarch *gdbarch)
1678 {
1679   struct gdbarch_data_registration *rego;
1680   for (rego = gdbarch_data_registry.registrations;
1681        rego != NULL;
1682        rego = rego->next)
1683     {
1684       struct gdbarch_data *data = rego->data;
1685       gdb_assert (data->index < gdbarch->nr_data);
1686       if (data->init != NULL)
1687         {
1688           void *pointer = data->init (gdbarch);
1689           set_gdbarch_data (gdbarch, data, pointer);
1690         }
1691     }
1692 }
1693
1694 /* Create/delete the gdbarch data vector. */
1695
1696 static void
1697 alloc_gdbarch_data (struct gdbarch *gdbarch)
1698 {
1699   gdb_assert (gdbarch->data == NULL);
1700   gdbarch->nr_data = gdbarch_data_registry.nr;
1701   gdbarch->data = xcalloc (gdbarch->nr_data, sizeof (void*));
1702 }
1703
1704 static void
1705 free_gdbarch_data (struct gdbarch *gdbarch)
1706 {
1707   struct gdbarch_data_registration *rego;
1708   gdb_assert (gdbarch->data != NULL);
1709   for (rego = gdbarch_data_registry.registrations;
1710        rego != NULL;
1711        rego = rego->next)
1712     {
1713       struct gdbarch_data *data = rego->data;
1714       gdb_assert (data->index < gdbarch->nr_data);
1715       if (data->free != NULL && gdbarch->data[data->index] != NULL)
1716         {
1717           data->free (gdbarch, gdbarch->data[data->index]);
1718           gdbarch->data[data->index] = NULL;
1719         }
1720     }
1721   xfree (gdbarch->data);
1722   gdbarch->data = NULL;
1723 }
1724
1725
1726 /* Initialize the current value of thee specified per-architecture
1727    data-pointer. */
1728
1729 void
1730 set_gdbarch_data (struct gdbarch *gdbarch,
1731                   struct gdbarch_data *data,
1732                   void *pointer)
1733 {
1734   gdb_assert (data->index < gdbarch->nr_data);
1735   if (data->free != NULL && gdbarch->data[data->index] != NULL)
1736     data->free (gdbarch, gdbarch->data[data->index]);
1737   gdbarch->data[data->index] = pointer;
1738 }
1739
1740 /* Return the current value of the specified per-architecture
1741    data-pointer. */
1742
1743 void *
1744 gdbarch_data (struct gdbarch_data *data)
1745 {
1746   gdb_assert (data->index < current_gdbarch->nr_data);
1747   return current_gdbarch->data[data->index];
1748 }
1749
1750
1751
1752 /* Keep a registry of swapped data required by GDB modules. */
1753
1754 struct gdbarch_swap
1755 {
1756   void *swap;
1757   struct gdbarch_swap_registration *source;
1758   struct gdbarch_swap *next;
1759 };
1760
1761 struct gdbarch_swap_registration
1762 {
1763   void *data;
1764   unsigned long sizeof_data;
1765   gdbarch_swap_ftype *init;
1766   struct gdbarch_swap_registration *next;
1767 };
1768
1769 struct gdbarch_swap_registry
1770 {
1771   int nr;
1772   struct gdbarch_swap_registration *registrations;
1773 };
1774
1775 struct gdbarch_swap_registry gdbarch_swap_registry =
1776 {
1777   0, NULL,
1778 };
1779
1780 void
1781 register_gdbarch_swap (void *data,
1782                        unsigned long sizeof_data,
1783                        gdbarch_swap_ftype *init)
1784 {
1785   struct gdbarch_swap_registration **rego;
1786   for (rego = &gdbarch_swap_registry.registrations;
1787        (*rego) != NULL;
1788        rego = &(*rego)->next);
1789   (*rego) = XMALLOC (struct gdbarch_swap_registration);
1790   (*rego)->next = NULL;
1791   (*rego)->init = init;
1792   (*rego)->data = data;
1793   (*rego)->sizeof_data = sizeof_data;
1794 }
1795
1796
1797 static void
1798 init_gdbarch_swap (struct gdbarch *gdbarch)
1799 {
1800   struct gdbarch_swap_registration *rego;
1801   struct gdbarch_swap **curr = &gdbarch->swap;
1802   for (rego = gdbarch_swap_registry.registrations;
1803        rego != NULL;
1804        rego = rego->next)
1805     {
1806       if (rego->data != NULL)
1807         {
1808           (*curr) = XMALLOC (struct gdbarch_swap);
1809           (*curr)->source = rego;
1810           (*curr)->swap = xmalloc (rego->sizeof_data);
1811           (*curr)->next = NULL;
1812           memset (rego->data, 0, rego->sizeof_data);
1813           curr = &(*curr)->next;
1814         }
1815       if (rego->init != NULL)
1816         rego->init ();
1817     }
1818 }
1819
1820 static void
1821 swapout_gdbarch_swap (struct gdbarch *gdbarch)
1822 {
1823   struct gdbarch_swap *curr;
1824   for (curr = gdbarch->swap;
1825        curr != NULL;
1826        curr = curr->next)
1827     memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
1828 }
1829
1830 static void
1831 swapin_gdbarch_swap (struct gdbarch *gdbarch)
1832 {
1833   struct gdbarch_swap *curr;
1834   for (curr = gdbarch->swap;
1835        curr != NULL;
1836        curr = curr->next)
1837     memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
1838 }
1839
1840
1841 /* Keep a registry of the architectures known by GDB. */
1842
1843 struct gdbarch_registration
1844 {
1845   enum bfd_architecture bfd_architecture;
1846   gdbarch_init_ftype *init;
1847   gdbarch_dump_tdep_ftype *dump_tdep;
1848   struct gdbarch_list *arches;
1849   struct gdbarch_registration *next;
1850 };
1851
1852 static struct gdbarch_registration *gdbarch_registry = NULL;
1853
1854 static void
1855 append_name (const char ***buf, int *nr, const char *name)
1856 {
1857   *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1858   (*buf)[*nr] = name;
1859   *nr += 1;
1860 }
1861
1862 const char **
1863 gdbarch_printable_names (void)
1864 {
1865   if (GDB_MULTI_ARCH)
1866     {
1867       /* Accumulate a list of names based on the registed list of
1868          architectures. */
1869       enum bfd_architecture a;
1870       int nr_arches = 0;
1871       const char **arches = NULL;
1872       struct gdbarch_registration *rego;
1873       for (rego = gdbarch_registry;
1874            rego != NULL;
1875            rego = rego->next)
1876         {
1877           const struct bfd_arch_info *ap;
1878           ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1879           if (ap == NULL)
1880             internal_error (__FILE__, __LINE__,
1881                             "gdbarch_architecture_names: multi-arch unknown");
1882           do
1883             {
1884               append_name (&arches, &nr_arches, ap->printable_name);
1885               ap = ap->next;
1886             }
1887           while (ap != NULL);
1888         }
1889       append_name (&arches, &nr_arches, NULL);
1890       return arches;
1891     }
1892   else
1893     /* Just return all the architectures that BFD knows.  Assume that
1894        the legacy architecture framework supports them. */
1895     return bfd_arch_list ();
1896 }
1897
1898
1899 void
1900 gdbarch_register (enum bfd_architecture bfd_architecture,
1901                   gdbarch_init_ftype *init,
1902                   gdbarch_dump_tdep_ftype *dump_tdep)
1903 {
1904   struct gdbarch_registration **curr;
1905   const struct bfd_arch_info *bfd_arch_info;
1906   /* Check that BFD recognizes this architecture */
1907   bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1908   if (bfd_arch_info == NULL)
1909     {
1910       internal_error (__FILE__, __LINE__,
1911                       "gdbarch: Attempt to register unknown architecture (%d)",
1912                       bfd_architecture);
1913     }
1914   /* Check that we haven't seen this architecture before */
1915   for (curr = &gdbarch_registry;
1916        (*curr) != NULL;
1917        curr = &(*curr)->next)
1918     {
1919       if (bfd_architecture == (*curr)->bfd_architecture)
1920         internal_error (__FILE__, __LINE__,
1921                         "gdbarch: Duplicate registraration of architecture (%s)",
1922                         bfd_arch_info->printable_name);
1923     }
1924   /* log it */
1925   if (gdbarch_debug)
1926     fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
1927                         bfd_arch_info->printable_name,
1928                         (long) init);
1929   /* Append it */
1930   (*curr) = XMALLOC (struct gdbarch_registration);
1931   (*curr)->bfd_architecture = bfd_architecture;
1932   (*curr)->init = init;
1933   (*curr)->dump_tdep = dump_tdep;
1934   (*curr)->arches = NULL;
1935   (*curr)->next = NULL;
1936   /* When non- multi-arch, install whatever target dump routine we've
1937      been provided - hopefully that routine has been written correctly
1938      and works regardless of multi-arch. */
1939   if (!GDB_MULTI_ARCH && dump_tdep != NULL
1940       && startup_gdbarch.dump_tdep == NULL)
1941     startup_gdbarch.dump_tdep = dump_tdep;
1942 }
1943
1944 void
1945 register_gdbarch_init (enum bfd_architecture bfd_architecture,
1946                        gdbarch_init_ftype *init)
1947 {
1948   gdbarch_register (bfd_architecture, init, NULL);
1949 }
1950
1951
1952 /* Look for an architecture using gdbarch_info.  Base search on only
1953    BFD_ARCH_INFO and BYTE_ORDER. */
1954
1955 struct gdbarch_list *
1956 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
1957                              const struct gdbarch_info *info)
1958 {
1959   for (; arches != NULL; arches = arches->next)
1960     {
1961       if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
1962         continue;
1963       if (info->byte_order != arches->gdbarch->byte_order)
1964         continue;
1965       return arches;
1966     }
1967   return NULL;
1968 }
1969
1970
1971 /* Update the current architecture. Return ZERO if the update request
1972    failed. */
1973
1974 int
1975 gdbarch_update_p (struct gdbarch_info info)
1976 {
1977   struct gdbarch *new_gdbarch;
1978   struct gdbarch_list **list;
1979   struct gdbarch_registration *rego;
1980
1981   /* Fill in missing parts of the INFO struct using a number of
1982      sources: \`\`set ...''; INFOabfd supplied; existing target.  */
1983
1984   /* \`\`(gdb) set architecture ...'' */
1985   if (info.bfd_arch_info == NULL
1986       && !TARGET_ARCHITECTURE_AUTO)
1987     info.bfd_arch_info = TARGET_ARCHITECTURE;
1988   if (info.bfd_arch_info == NULL
1989       && info.abfd != NULL
1990       && bfd_get_arch (info.abfd) != bfd_arch_unknown
1991       && bfd_get_arch (info.abfd) != bfd_arch_obscure)
1992     info.bfd_arch_info = bfd_get_arch_info (info.abfd);
1993   if (info.bfd_arch_info == NULL)
1994     info.bfd_arch_info = TARGET_ARCHITECTURE;
1995
1996   /* \`\`(gdb) set byte-order ...'' */
1997   if (info.byte_order == 0
1998       && !TARGET_BYTE_ORDER_AUTO)
1999     info.byte_order = TARGET_BYTE_ORDER;
2000   /* From the INFO struct. */
2001   if (info.byte_order == 0
2002       && info.abfd != NULL)
2003     info.byte_order = (bfd_big_endian (info.abfd) ? BIG_ENDIAN
2004                        : bfd_little_endian (info.abfd) ? LITTLE_ENDIAN
2005                        : 0);
2006   /* From the current target. */
2007   if (info.byte_order == 0)
2008     info.byte_order = TARGET_BYTE_ORDER;
2009
2010   /* Must have found some sort of architecture. */
2011   gdb_assert (info.bfd_arch_info != NULL);
2012
2013   if (gdbarch_debug)
2014     {
2015       fprintf_unfiltered (gdb_stdlog,
2016                           "gdbarch_update: info.bfd_arch_info %s\n",
2017                           (info.bfd_arch_info != NULL
2018                            ? info.bfd_arch_info->printable_name
2019                            : "(null)"));
2020       fprintf_unfiltered (gdb_stdlog,
2021                           "gdbarch_update: info.byte_order %d (%s)\n",
2022                           info.byte_order,
2023                           (info.byte_order == BIG_ENDIAN ? "big"
2024                            : info.byte_order == LITTLE_ENDIAN ? "little"
2025                            : "default"));
2026       fprintf_unfiltered (gdb_stdlog,
2027                           "gdbarch_update: info.abfd 0x%lx\n",
2028                           (long) info.abfd);
2029       fprintf_unfiltered (gdb_stdlog,
2030                           "gdbarch_update: info.tdep_info 0x%lx\n",
2031                           (long) info.tdep_info);
2032     }
2033
2034   /* Find the target that knows about this architecture. */
2035   for (rego = gdbarch_registry;
2036        rego != NULL;
2037        rego = rego->next)
2038     if (rego->bfd_architecture == info.bfd_arch_info->arch)
2039       break;
2040   if (rego == NULL)
2041     {
2042       if (gdbarch_debug)
2043         fprintf_unfiltered (gdb_stdlog, "gdbarch_update: No matching architecture\\n");
2044       return 0;
2045     }
2046
2047   /* Ask the target for a replacement architecture. */
2048   new_gdbarch = rego->init (info, rego->arches);
2049
2050   /* Did the target like it?  No. Reject the change. */
2051   if (new_gdbarch == NULL)
2052     {
2053       if (gdbarch_debug)
2054         fprintf_unfiltered (gdb_stdlog, "gdbarch_update: Target rejected architecture\\n");
2055       return 0;
2056     }
2057
2058   /* Did the architecture change?  No. Do nothing. */
2059   if (current_gdbarch == new_gdbarch)
2060     {
2061       if (gdbarch_debug)
2062         fprintf_unfiltered (gdb_stdlog, "gdbarch_update: Architecture 0x%08lx (%s) unchanged\\n",
2063                             (long) new_gdbarch,
2064                             new_gdbarch->bfd_arch_info->printable_name);
2065       return 1;
2066     }
2067
2068   /* Swap all data belonging to the old target out */
2069   swapout_gdbarch_swap (current_gdbarch);
2070
2071   /* Is this a pre-existing architecture?  Yes. Swap it in.  */
2072   for (list = &rego->arches;
2073        (*list) != NULL;
2074        list = &(*list)->next)
2075     {
2076       if ((*list)->gdbarch == new_gdbarch)
2077         {
2078           if (gdbarch_debug)
2079             fprintf_unfiltered (gdb_stdlog,
2080                                 "gdbarch_update: Previous architecture 0x%08lx (%s) selected\\n",
2081                                 (long) new_gdbarch,
2082                                 new_gdbarch->bfd_arch_info->printable_name);
2083           current_gdbarch = new_gdbarch;
2084           swapin_gdbarch_swap (new_gdbarch);
2085           architecture_changed_event ();
2086           return 1;
2087         }
2088     }
2089
2090   /* Append this new architecture to this targets list. */
2091   (*list) = XMALLOC (struct gdbarch_list);
2092   (*list)->next = NULL;
2093   (*list)->gdbarch = new_gdbarch;
2094
2095   /* Switch to this new architecture.  Dump it out. */
2096   current_gdbarch = new_gdbarch;
2097   if (gdbarch_debug)
2098     {
2099       fprintf_unfiltered (gdb_stdlog,
2100                           "gdbarch_update: New architecture 0x%08lx (%s) selected\\n",
2101                           (long) new_gdbarch,
2102                           new_gdbarch->bfd_arch_info->printable_name);
2103     }
2104
2105   /* Check that the newly installed architecture is valid.  Plug in
2106      any post init values.  */
2107   new_gdbarch->dump_tdep = rego->dump_tdep;
2108   verify_gdbarch (new_gdbarch);
2109
2110   /* Initialize the per-architecture memory (swap) areas.
2111      CURRENT_GDBARCH must be update before these modules are
2112      called. */
2113   init_gdbarch_swap (new_gdbarch);
2114
2115   /* Initialize the per-architecture data-pointer of all parties that
2116      registered an interest in this architecture.  CURRENT_GDBARCH
2117      must be updated before these modules are called. */
2118   init_gdbarch_data (new_gdbarch);
2119   architecture_changed_event ();
2120
2121   if (gdbarch_debug)
2122     gdbarch_dump (current_gdbarch, gdb_stdlog);
2123
2124   return 1;
2125 }
2126
2127
2128 /* Disassembler */
2129
2130 /* Pointer to the target-dependent disassembly function.  */
2131 int (*tm_print_insn) (bfd_vma, disassemble_info *);
2132 disassemble_info tm_print_insn_info;
2133
2134
2135 extern void _initialize_gdbarch (void);
2136
2137 void
2138 _initialize_gdbarch (void)
2139 {
2140   struct cmd_list_element *c;
2141
2142   INIT_DISASSEMBLE_INFO_NO_ARCH (tm_print_insn_info, gdb_stdout, (fprintf_ftype)fprintf_filtered);
2143   tm_print_insn_info.flavour = bfd_target_unknown_flavour;
2144   tm_print_insn_info.read_memory_func = dis_asm_read_memory;
2145   tm_print_insn_info.memory_error_func = dis_asm_memory_error;
2146   tm_print_insn_info.print_address_func = dis_asm_print_address;
2147
2148   add_show_from_set (add_set_cmd ("arch",
2149                                   class_maintenance,
2150                                   var_zinteger,
2151                                   (char *)&gdbarch_debug,
2152                                   "Set architecture debugging.\\n\\
2153 When non-zero, architecture debugging is enabled.", &setdebuglist),
2154                      &showdebuglist);
2155   c = add_set_cmd ("archdebug",
2156                    class_maintenance,
2157                    var_zinteger,
2158                    (char *)&gdbarch_debug,
2159                    "Set architecture debugging.\\n\\
2160 When non-zero, architecture debugging is enabled.", &setlist);
2161
2162   deprecate_cmd (c, "set debug arch");
2163   deprecate_cmd (add_show_from_set (c, &showlist), "show debug arch");
2164 }
2165 EOF
2166
2167 # close things off
2168 exec 1>&2
2169 #../move-if-change new-gdbarch.c gdbarch.c
2170 compare_new gdbarch.c