3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
6 # Free Software Foundation, Inc.
8 # This file is part of GDB.
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 2 of the License, or
13 # (at your option) any later version.
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.
20 # You should have received a copy of the GNU General Public License
21 # along with this program; if not, write to the Free Software
22 # Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 # Boston, MA 02110-1301, USA.
25 # Make certain that the script is not running in an internationalized
28 LC_ALL
=c
; export LC_ALL
36 echo "${file} missing? cp new-${file} ${file}" 1>&2
37 elif diff -u ${file} new-
${file}
39 echo "${file} unchanged" 1>&2
41 echo "${file} has changed? cp new-${file} ${file}" 1>&2
46 # Format of the input table
47 read="class macro returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
55 if test "${line}" = ""
58 elif test "${line}" = "#" -a "${comment}" = ""
61 elif expr "${line}" : "#" > /dev
/null
67 # The semantics of IFS varies between different SH's. Some
68 # treat ``::' as three fields while some treat it as just too.
69 # Work around this by eliminating ``::'' ....
70 line
="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
72 OFS
="${IFS}" ; IFS
="[:]"
73 eval read ${read} <<EOF
78 if test -n "${garbage_at_eol}"
80 echo "Garbage at end-of-line in ${line}" 1>&2
85 # .... and then going back through each field and strip out those
86 # that ended up with just that space character.
89 if eval test \"\
${${r}}\" = \"\
\"
95 FUNCTION
=`echo ${function} | tr '[a-z]' '[A-Z]'`
96 if test "x${macro}" = "x="
98 # Provide a UCASE version of function (for when there isn't MACRO)
100 elif test "${macro}" = "${FUNCTION}"
102 echo "${function}: Specify = for macro field" 1>&2
107 # Check that macro definition wasn't supplied for multi-arch
110 if test "${macro}" != ""
112 echo "Error: Function ${function} multi-arch yet macro ${macro} supplied" 1>&2
119 m
) staticdefault
="${predefault}" ;;
120 M
) staticdefault
="0" ;;
121 * ) test "${staticdefault}" || staticdefault
=0 ;;
126 case "${invalid_p}" in
128 if test -n "${predefault}"
130 #invalid_p="gdbarch->${function} == ${predefault}"
131 predicate
="gdbarch->${function} != ${predefault}"
132 elif class_is_variable_p
134 predicate
="gdbarch->${function} != 0"
135 elif class_is_function_p
137 predicate
="gdbarch->${function} != NULL"
141 echo "Predicate function ${function} with invalid_p." 1>&2
148 # PREDEFAULT is a valid fallback definition of MEMBER when
149 # multi-arch is not enabled. This ensures that the
150 # default value, when multi-arch is the same as the
151 # default value when not multi-arch. POSTDEFAULT is
152 # always a valid definition of MEMBER as this again
153 # ensures consistency.
155 if [ -n "${postdefault}" ]
157 fallbackdefault
="${postdefault}"
158 elif [ -n "${predefault}" ]
160 fallbackdefault
="${predefault}"
165 #NOT YET: See gdbarch.log for basic verification of
180 fallback_default_p
()
182 [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
183 ||
[ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
186 class_is_variable_p
()
194 class_is_function_p
()
197 *f
* |
*F
* |
*m
* |
*M
* ) true
;;
202 class_is_multiarch_p
()
210 class_is_predicate_p
()
213 *F
* |
*V
* |
*M
* ) true
;;
227 # dump out/verify the doco
237 # F -> function + predicate
238 # hiding a function + predicate to test function validity
241 # V -> variable + predicate
242 # hiding a variable + predicate to test variables validity
244 # hiding something from the ``struct info'' object
245 # m -> multi-arch function
246 # hiding a multi-arch function (parameterised with the architecture)
247 # M -> multi-arch function + predicate
248 # hiding a multi-arch function + predicate to test function validity
252 # The name of the legacy C macro by which this method can be
253 # accessed. If empty, no macro is defined. If "=", a macro
254 # formed from the upper-case function name is used.
258 # For functions, the return type; for variables, the data type
262 # For functions, the member function name; for variables, the
263 # variable name. Member function names are always prefixed with
264 # ``gdbarch_'' for name-space purity.
268 # The formal argument list. It is assumed that the formal
269 # argument list includes the actual name of each list element.
270 # A function with no arguments shall have ``void'' as the
271 # formal argument list.
275 # The list of actual arguments. The arguments specified shall
276 # match the FORMAL list given above. Functions with out
277 # arguments leave this blank.
281 # To help with the GDB startup a static gdbarch object is
282 # created. STATICDEFAULT is the value to insert into that
283 # static gdbarch object. Since this a static object only
284 # simple expressions can be used.
286 # If STATICDEFAULT is empty, zero is used.
290 # An initial value to assign to MEMBER of the freshly
291 # malloc()ed gdbarch object. After initialization, the
292 # freshly malloc()ed object is passed to the target
293 # architecture code for further updates.
295 # If PREDEFAULT is empty, zero is used.
297 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
298 # INVALID_P are specified, PREDEFAULT will be used as the
299 # default for the non- multi-arch target.
301 # A zero PREDEFAULT function will force the fallback to call
304 # Variable declarations can refer to ``gdbarch'' which will
305 # contain the current architecture. Care should be taken.
309 # A value to assign to MEMBER of the new gdbarch object should
310 # the target architecture code fail to change the PREDEFAULT
313 # If POSTDEFAULT is empty, no post update is performed.
315 # If both INVALID_P and POSTDEFAULT are non-empty then
316 # INVALID_P will be used to determine if MEMBER should be
317 # changed to POSTDEFAULT.
319 # If a non-empty POSTDEFAULT and a zero INVALID_P are
320 # specified, POSTDEFAULT will be used as the default for the
321 # non- multi-arch target (regardless of the value of
324 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
326 # Variable declarations can refer to ``current_gdbarch'' which
327 # will contain the current architecture. Care should be
332 # A predicate equation that validates MEMBER. Non-zero is
333 # returned if the code creating the new architecture failed to
334 # initialize MEMBER or the initialized the member is invalid.
335 # If POSTDEFAULT is non-empty then MEMBER will be updated to
336 # that value. If POSTDEFAULT is empty then internal_error()
339 # If INVALID_P is empty, a check that MEMBER is no longer
340 # equal to PREDEFAULT is used.
342 # The expression ``0'' disables the INVALID_P check making
343 # PREDEFAULT a legitimate value.
345 # See also PREDEFAULT and POSTDEFAULT.
349 # An optional expression that convers MEMBER to a value
350 # suitable for formatting using %s.
352 # If PRINT is empty, paddr_nz (for CORE_ADDR) or paddr_d
353 # (anything else) is used.
355 garbage_at_eol
) : ;;
357 # Catches stray fields.
360 echo "Bad field ${field}"
368 # See below (DOCO) for description of each field
370 i:TARGET_ARCHITECTURE:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::TARGET_ARCHITECTURE->printable_name
372 i:TARGET_BYTE_ORDER:int:byte_order:::BFD_ENDIAN_BIG
374 i:TARGET_OSABI:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
376 i::const struct target_desc *:target_desc:::::::paddr_d ((long) current_gdbarch->target_desc)
377 # Number of bits in a char or unsigned char for the target machine.
378 # Just like CHAR_BIT in <limits.h> but describes the target machine.
379 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
381 # Number of bits in a short or unsigned short for the target machine.
382 v:TARGET_SHORT_BIT:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
383 # Number of bits in an int or unsigned int for the target machine.
384 v:TARGET_INT_BIT:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
385 # Number of bits in a long or unsigned long for the target machine.
386 v:TARGET_LONG_BIT:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
387 # Number of bits in a long long or unsigned long long for the target
389 v:TARGET_LONG_LONG_BIT:int:long_long_bit:::8 * sizeof (LONGEST):2*TARGET_LONG_BIT::0
391 # The ABI default bit-size and format for "float", "double", and "long
392 # double". These bit/format pairs should eventually be combined into
393 # a single object. For the moment, just initialize them as a pair.
395 v:TARGET_FLOAT_BIT:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
396 v:TARGET_FLOAT_FORMAT:const struct floatformat *:float_format:::::default_float_format (current_gdbarch)::pformat (current_gdbarch->float_format)
397 v:TARGET_DOUBLE_BIT:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
398 v:TARGET_DOUBLE_FORMAT:const struct floatformat *:double_format:::::default_double_format (current_gdbarch)::pformat (current_gdbarch->double_format)
399 v:TARGET_LONG_DOUBLE_BIT:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
400 v:TARGET_LONG_DOUBLE_FORMAT:const struct floatformat *:long_double_format:::::default_double_format (current_gdbarch)::pformat (current_gdbarch->long_double_format)
402 # For most targets, a pointer on the target and its representation as an
403 # address in GDB have the same size and "look the same". For such a
404 # target, you need only set TARGET_PTR_BIT / ptr_bit and TARGET_ADDR_BIT
405 # / addr_bit will be set from it.
407 # If TARGET_PTR_BIT and TARGET_ADDR_BIT are different, you'll probably
408 # also need to set POINTER_TO_ADDRESS and ADDRESS_TO_POINTER as well.
410 # ptr_bit is the size of a pointer on the target
411 v:TARGET_PTR_BIT:int:ptr_bit:::8 * sizeof (void*):TARGET_INT_BIT::0
412 # addr_bit is the size of a target address as represented in gdb
413 v:TARGET_ADDR_BIT:int:addr_bit:::8 * sizeof (void*):0:TARGET_PTR_BIT:
414 # Number of bits in a BFD_VMA for the target object file format.
415 v:TARGET_BFD_VMA_BIT:int:bfd_vma_bit:::8 * sizeof (void*):TARGET_ARCHITECTURE->bits_per_address::0
417 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
418 v:TARGET_CHAR_SIGNED:int:char_signed:::1:-1:1
420 F:TARGET_READ_PC:CORE_ADDR:read_pc:ptid_t ptid:ptid
421 f:TARGET_WRITE_PC:void:write_pc:CORE_ADDR val, ptid_t ptid:val, ptid:0:generic_target_write_pc::0
422 # UNWIND_SP is a direct replacement for TARGET_READ_SP.
423 F:TARGET_READ_SP:CORE_ADDR:read_sp:void
424 # Function for getting target's idea of a frame pointer. FIXME: GDB's
425 # whole scheme for dealing with "frames" and "frame pointers" needs a
427 f:TARGET_VIRTUAL_FRAME_POINTER:void:virtual_frame_pointer:CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset:pc, frame_regnum, frame_offset:0:legacy_virtual_frame_pointer::0
429 M::void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
430 M::void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
432 v:=:int:num_regs:::0:-1
433 # This macro gives the number of pseudo-registers that live in the
434 # register namespace but do not get fetched or stored on the target.
435 # These pseudo-registers may be aliases for other registers,
436 # combinations of other registers, or they may be computed by GDB.
437 v:=:int:num_pseudo_regs:::0:0::0
439 # GDB's standard (or well known) register numbers. These can map onto
440 # a real register or a pseudo (computed) register or not be defined at
442 # SP_REGNUM will hopefully be replaced by UNWIND_SP.
443 v:=:int:sp_regnum:::-1:-1::0
444 v:=:int:pc_regnum:::-1:-1::0
445 v:=:int:ps_regnum:::-1:-1::0
446 v:=:int:fp0_regnum:::0:-1::0
447 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
448 f:=:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
449 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
450 f:=:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
451 # Provide a default mapping from a DWARF register number to a gdb REGNUM.
452 f:=:int:dwarf_reg_to_regnum:int dwarf_regnr:dwarf_regnr::no_op_reg_to_regnum::0
453 # Convert from an sdb register number to an internal gdb register number.
454 f:=:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
455 f:=:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
456 f:=:const char *:register_name:int regnr:regnr
458 # REGISTER_TYPE is a direct replacement for DEPRECATED_REGISTER_VIRTUAL_TYPE.
459 M::struct type *:register_type:int reg_nr:reg_nr
460 # If the value returned by DEPRECATED_REGISTER_BYTE agrees with the
461 # register offsets computed using just REGISTER_TYPE, this can be
462 # deleted. See: maint print registers. NOTE: cagney/2002-05-02: This
463 # function with predicate has a valid (callable) initial value. As a
464 # consequence, even when the predicate is false, the corresponding
465 # function works. This simplifies the migration process - old code,
466 # calling DEPRECATED_REGISTER_BYTE, doesn't need to be modified.
467 F:=:int:deprecated_register_byte:int reg_nr:reg_nr:generic_register_byte:generic_register_byte
469 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
470 M::struct frame_id:unwind_dummy_id:struct frame_info *info:info
471 # Implement UNWIND_DUMMY_ID and PUSH_DUMMY_CALL, then delete
472 # DEPRECATED_FP_REGNUM.
473 v:=:int:deprecated_fp_regnum:::-1:-1::0
475 # See gdbint.texinfo. See infcall.c.
476 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
477 # DEPRECATED_REGISTER_SIZE can be deleted.
478 v:=:int:deprecated_register_size
479 v:=:int:call_dummy_location::::AT_ENTRY_POINT::0
480 M::CORE_ADDR:push_dummy_code:CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr:sp, funaddr, using_gcc, args, nargs, value_type, real_pc, bp_addr
482 m::void:print_registers_info:struct ui_file *file, struct frame_info *frame, int regnum, int all:file, frame, regnum, all::default_print_registers_info::0
483 M::void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
484 M::void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
485 # MAP a GDB RAW register number onto a simulator register number. See
486 # also include/...-sim.h.
487 f:=:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
488 F:=:int:register_bytes_ok:long nr_bytes:nr_bytes
489 f:=:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
490 f:=:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
491 # setjmp/longjmp support.
492 F:=:int:get_longjmp_target:CORE_ADDR *pc:pc
494 v:=:int:believe_pcc_promotion:::::::
496 f:=:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
497 f:=:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
498 f:=:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
500 f:=:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
501 f:=:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
502 M::CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
504 # NOTE: kettenis/2005-09-01: Replaced by PUSH_DUMMY_CALL.
505 F:=:void:deprecated_store_struct_return:CORE_ADDR addr, CORE_ADDR sp:addr, sp
507 # It has been suggested that this, well actually its predecessor,
508 # should take the type/value of the function to be called and not the
509 # return type. This is left as an exercise for the reader.
511 # NOTE: cagney/2004-06-13: The function stack.c:return_command uses
512 # the predicate with default hack to avoid calling STORE_RETURN_VALUE
513 # (via legacy_return_value), when a small struct is involved.
515 M::enum return_value_convention:return_value:struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:valtype, regcache, readbuf, writebuf::legacy_return_value
517 # The deprecated methods EXTRACT_RETURN_VALUE, STORE_RETURN_VALUE,
518 # DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS and
519 # DEPRECATED_USE_STRUCT_CONVENTION have all been folded into
522 f:=:void:extract_return_value:struct type *type, struct regcache *regcache, gdb_byte *valbuf:type, regcache, valbuf::legacy_extract_return_value::0
523 f:=:void:store_return_value:struct type *type, struct regcache *regcache, const gdb_byte *valbuf:type, regcache, valbuf::legacy_store_return_value::0
524 f:=:void:deprecated_extract_return_value:struct type *type, gdb_byte *regbuf, gdb_byte *valbuf:type, regbuf, valbuf
525 f:=:void:deprecated_store_return_value:struct type *type, gdb_byte *valbuf:type, valbuf
526 f:=:int:deprecated_use_struct_convention:int gcc_p, struct type *value_type:gcc_p, value_type::generic_use_struct_convention::0
528 # As of 2004-01-17 only the 32-bit SPARC ABI has been identified as an
529 # ABI suitable for the implementation of a robust extract
530 # struct-convention return-value address method (the sparc saves the
531 # address in the callers frame). All the other cases so far examined,
532 # the DEPRECATED_EXTRACT_STRUCT_VALUE implementation has been
533 # erreneous - the code was incorrectly assuming that the return-value
534 # address, stored in a register, was preserved across the entire
537 # For the moment retain DEPRECATED_EXTRACT_STRUCT_VALUE as a marker of
538 # the ABIs that are still to be analyzed - perhaps this should simply
539 # be deleted. The commented out extract_returned_value_address method
540 # is provided as a starting point for the 32-bit SPARC. It, or
541 # something like it, along with changes to both infcmd.c and stack.c
542 # will be needed for that case to work. NB: It is passed the callers
543 # frame since it is only after the callee has returned that this
546 #M::CORE_ADDR:extract_returned_value_address:struct frame_info *caller_frame:caller_frame
547 F:=:CORE_ADDR:deprecated_extract_struct_value_address:struct regcache *regcache:regcache
550 f:=:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
551 f:=:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
552 f:=:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
553 M::CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
554 f:=:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
555 f:=:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
556 v:=:CORE_ADDR:decr_pc_after_break:::0:::0
558 # A function can be addressed by either it's "pointer" (possibly a
559 # descriptor address) or "entry point" (first executable instruction).
560 # The method "convert_from_func_ptr_addr" converting the former to the
561 # latter. DEPRECATED_FUNCTION_START_OFFSET is being used to implement
562 # a simplified subset of that functionality - the function's address
563 # corresponds to the "function pointer" and the function's start
564 # corresponds to the "function entry point" - and hence is redundant.
566 v:=:CORE_ADDR:deprecated_function_start_offset:::0:::0
568 m::void:remote_translate_xfer_address:struct regcache *regcache, CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len:regcache, gdb_addr, gdb_len, rem_addr, rem_len::generic_remote_translate_xfer_address::0
570 # Fetch the target specific address used to represent a load module.
571 F:=:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
573 v:=:CORE_ADDR:frame_args_skip:::0:::0
574 M::CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
575 M::CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
576 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
577 # frame-base. Enable frame-base before frame-unwind.
578 F:=:int:frame_num_args:struct frame_info *frame:frame
580 # DEPRECATED_STACK_ALIGN has been replaced by an initial aligning call
581 # to frame_align and the requirement that methods such as
582 # push_dummy_call and frame_red_zone_size maintain correct stack/frame
584 F:=:CORE_ADDR:deprecated_stack_align:CORE_ADDR sp:sp
585 M::CORE_ADDR:frame_align:CORE_ADDR address:address
586 # DEPRECATED_REG_STRUCT_HAS_ADDR has been replaced by
587 # stabs_argument_has_addr.
588 F:=:int:deprecated_reg_struct_has_addr:int gcc_p, struct type *type:gcc_p, type
589 m::int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
590 v:=:int:frame_red_zone_size
592 m::CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
593 # On some machines there are bits in addresses which are not really
594 # part of the address, but are used by the kernel, the hardware, etc.
595 # for special purposes. ADDR_BITS_REMOVE takes out any such bits so
596 # we get a "real" address such as one would find in a symbol table.
597 # This is used only for addresses of instructions, and even then I'm
598 # not sure it's used in all contexts. It exists to deal with there
599 # being a few stray bits in the PC which would mislead us, not as some
600 # sort of generic thing to handle alignment or segmentation (it's
601 # possible it should be in TARGET_READ_PC instead).
602 f:=:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
603 # It is not at all clear why SMASH_TEXT_ADDRESS is not folded into
605 f:=:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
606 # FIXME/cagney/2001-01-18: This should be split in two. A target method that indicates if
607 # the target needs software single step. An ISA method to implement it.
609 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts breakpoints
610 # using the breakpoint system instead of blatting memory directly (as with rs6000).
612 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the target can
613 # single step. If not, then implement single step using breakpoints.
614 F:=:void:software_single_step:enum target_signal sig, int insert_breakpoints_p:sig, insert_breakpoints_p
615 # Return non-zero if the processor is executing a delay slot and a
616 # further single-step is needed before the instruction finishes.
617 M::int:single_step_through_delay:struct frame_info *frame:frame
618 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
619 # disassembler. Perhaps objdump can handle it?
620 f:TARGET_PRINT_INSN:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
621 f:=:CORE_ADDR:skip_trampoline_code:CORE_ADDR pc:pc::generic_skip_trampoline_code::0
624 # If IN_SOLIB_DYNSYM_RESOLVE_CODE returns true, and SKIP_SOLIB_RESOLVER
625 # evaluates non-zero, this is the address where the debugger will place
626 # a step-resume breakpoint to get us past the dynamic linker.
627 m::CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
628 # Some systems also have trampoline code for returning from shared libs.
629 f:=:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
631 # A target might have problems with watchpoints as soon as the stack
632 # frame of the current function has been destroyed. This mostly happens
633 # as the first action in a funtion's epilogue. in_function_epilogue_p()
634 # is defined to return a non-zero value if either the given addr is one
635 # instruction after the stack destroying instruction up to the trailing
636 # return instruction or if we can figure out that the stack frame has
637 # already been invalidated regardless of the value of addr. Targets
638 # which don't suffer from that problem could just let this functionality
640 m::int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
641 # Given a vector of command-line arguments, return a newly allocated
642 # string which, when passed to the create_inferior function, will be
643 # parsed (on Unix systems, by the shell) to yield the same vector.
644 # This function should call error() if the argument vector is not
645 # representable for this target or if this target does not support
646 # command-line arguments.
647 # ARGC is the number of elements in the vector.
648 # ARGV is an array of strings, one per argument.
649 m::char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
650 f:=:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
651 f:=:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
652 v:=:const char *:name_of_malloc:::"malloc":"malloc"::0:NAME_OF_MALLOC
653 v:=:int:cannot_step_breakpoint:::0:0::0
654 v:=:int:have_nonsteppable_watchpoint:::0:0::0
655 F:=:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
656 M::const char *:address_class_type_flags_to_name:int type_flags:type_flags
657 M::int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
658 # Is a register in a group
659 m::int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
660 # Fetch the pointer to the ith function argument.
661 F:=:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
663 # Return the appropriate register set for a core file section with
664 # name SECT_NAME and size SECT_SIZE.
665 M::const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
667 # If the elements of C++ vtables are in-place function descriptors rather
668 # than normal function pointers (which may point to code or a descriptor),
670 v::int:vtable_function_descriptors:::0:0::0
672 # Set if the least significant bit of the delta is used instead of the least
673 # significant bit of the pfn for pointers to virtual member functions.
674 v::int:vbit_in_delta:::0:0::0
681 exec > new-gdbarch.log
682 function_list |
while do_read
685 ${class} ${returntype} ${function} ($formal)
689 eval echo \"\ \ \ \
${r}=\
${${r}}\"
691 if class_is_predicate_p
&& fallback_default_p
693 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
697 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
699 echo "Error: postdefault is useless when invalid_p=0" 1>&2
703 if class_is_multiarch_p
705 if class_is_predicate_p
; then :
706 elif test "x${predefault}" = "x"
708 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
717 compare_new gdbarch.log
723 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
725 /* Dynamic architecture support for GDB, the GNU debugger.
727 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
728 Free Software Foundation, Inc.
730 This file is part of GDB.
732 This program is free software; you can redistribute it and/or modify
733 it under the terms of the GNU General Public License as published by
734 the Free Software Foundation; either version 2 of the License, or
735 (at your option) any later version.
737 This program is distributed in the hope that it will be useful,
738 but WITHOUT ANY WARRANTY; without even the implied warranty of
739 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
740 GNU General Public License for more details.
742 You should have received a copy of the GNU General Public License
743 along with this program; if not, write to the Free Software
744 Foundation, Inc., 51 Franklin Street, Fifth Floor,
745 Boston, MA 02110-1301, USA. */
747 /* This file was created with the aid of \`\`gdbarch.sh''.
749 The Bourne shell script \`\`gdbarch.sh'' creates the files
750 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
751 against the existing \`\`gdbarch.[hc]''. Any differences found
754 If editing this file, please also run gdbarch.sh and merge any
755 changes into that script. Conversely, when making sweeping changes
756 to this file, modifying gdbarch.sh and using its output may prove
777 struct minimal_symbol;
781 struct disassemble_info;
784 struct bp_target_info;
787 extern struct gdbarch *current_gdbarch;
793 printf "/* The following are pre-initialized by GDBARCH. */\n"
794 function_list |
while do_read
799 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
800 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
801 if test -n "${macro}"
803 printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
804 printf "#error \"Non multi-arch definition of ${macro}\"\n"
806 printf "#if !defined (${macro})\n"
807 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
816 printf "/* The following are initialized by the target dependent code. */\n"
817 function_list |
while do_read
819 if [ -n "${comment}" ]
821 echo "${comment}" |
sed \
827 if class_is_predicate_p
829 if test -n "${macro}"
832 printf "#if defined (${macro})\n"
833 printf "/* Legacy for systems yet to multi-arch ${macro} */\n"
834 printf "#if !defined (${macro}_P)\n"
835 printf "#define ${macro}_P() (1)\n"
840 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
841 if test -n "${macro}"
843 printf "#if !defined (GDB_TM_FILE) && defined (${macro}_P)\n"
844 printf "#error \"Non multi-arch definition of ${macro}\"\n"
846 printf "#if !defined (${macro}_P)\n"
847 printf "#define ${macro}_P() (gdbarch_${function}_p (current_gdbarch))\n"
851 if class_is_variable_p
854 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
855 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
856 if test -n "${macro}"
858 printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
859 printf "#error \"Non multi-arch definition of ${macro}\"\n"
861 printf "#if !defined (${macro})\n"
862 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
866 if class_is_function_p
869 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
871 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
872 elif class_is_multiarch_p
874 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
876 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
878 if [ "x${formal}" = "xvoid" ]
880 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
882 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
884 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
885 if test -n "${macro}"
887 printf "#if !defined (GDB_TM_FILE) && defined (${macro})\n"
888 printf "#error \"Non multi-arch definition of ${macro}\"\n"
890 if [ "x${actual}" = "x" ]
892 d
="#define ${macro}() (gdbarch_${function} (current_gdbarch))"
893 elif [ "x${actual}" = "x-" ]
895 d
="#define ${macro} (gdbarch_${function} (current_gdbarch))"
897 d
="#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))"
899 printf "#if !defined (${macro})\n"
900 if [ "x${actual}" = "x" ]
902 printf "#define ${macro}() (gdbarch_${function} (current_gdbarch))\n"
903 elif [ "x${actual}" = "x-" ]
905 printf "#define ${macro} (gdbarch_${function} (current_gdbarch))\n"
907 printf "#define ${macro}(${actual}) (gdbarch_${function} (current_gdbarch, ${actual}))\n"
917 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
920 /* Mechanism for co-ordinating the selection of a specific
923 GDB targets (*-tdep.c) can register an interest in a specific
924 architecture. Other GDB components can register a need to maintain
925 per-architecture data.
927 The mechanisms below ensures that there is only a loose connection
928 between the set-architecture command and the various GDB
929 components. Each component can independently register their need
930 to maintain architecture specific data with gdbarch.
934 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
937 The more traditional mega-struct containing architecture specific
938 data for all the various GDB components was also considered. Since
939 GDB is built from a variable number of (fairly independent)
940 components it was determined that the global aproach was not
944 /* Register a new architectural family with GDB.
946 Register support for the specified ARCHITECTURE with GDB. When
947 gdbarch determines that the specified architecture has been
948 selected, the corresponding INIT function is called.
952 The INIT function takes two parameters: INFO which contains the
953 information available to gdbarch about the (possibly new)
954 architecture; ARCHES which is a list of the previously created
955 \`\`struct gdbarch'' for this architecture.
957 The INFO parameter is, as far as possible, be pre-initialized with
958 information obtained from INFO.ABFD or the global defaults.
960 The ARCHES parameter is a linked list (sorted most recently used)
961 of all the previously created architures for this architecture
962 family. The (possibly NULL) ARCHES->gdbarch can used to access
963 values from the previously selected architecture for this
964 architecture family. The global \`\`current_gdbarch'' shall not be
967 The INIT function shall return any of: NULL - indicating that it
968 doesn't recognize the selected architecture; an existing \`\`struct
969 gdbarch'' from the ARCHES list - indicating that the new
970 architecture is just a synonym for an earlier architecture (see
971 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
972 - that describes the selected architecture (see gdbarch_alloc()).
974 The DUMP_TDEP function shall print out all target specific values.
975 Care should be taken to ensure that the function works in both the
976 multi-arch and non- multi-arch cases. */
980 struct gdbarch *gdbarch;
981 struct gdbarch_list *next;
986 /* Use default: NULL (ZERO). */
987 const struct bfd_arch_info *bfd_arch_info;
989 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
992 /* Use default: NULL (ZERO). */
995 /* Use default: NULL (ZERO). */
996 struct gdbarch_tdep_info *tdep_info;
998 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
999 enum gdb_osabi osabi;
1001 /* Use default: NULL (ZERO). */
1002 const struct target_desc *target_desc;
1005 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1006 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1008 /* DEPRECATED - use gdbarch_register() */
1009 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1011 extern void gdbarch_register (enum bfd_architecture architecture,
1012 gdbarch_init_ftype *,
1013 gdbarch_dump_tdep_ftype *);
1016 /* Return a freshly allocated, NULL terminated, array of the valid
1017 architecture names. Since architectures are registered during the
1018 _initialize phase this function only returns useful information
1019 once initialization has been completed. */
1021 extern const char **gdbarch_printable_names (void);
1024 /* Helper function. Search the list of ARCHES for a GDBARCH that
1025 matches the information provided by INFO. */
1027 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1030 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1031 basic initialization using values obtained from the INFO and TDEP
1032 parameters. set_gdbarch_*() functions are called to complete the
1033 initialization of the object. */
1035 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1038 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1039 It is assumed that the caller freeds the \`\`struct
1042 extern void gdbarch_free (struct gdbarch *);
1045 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1046 obstack. The memory is freed when the corresponding architecture
1049 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1050 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1051 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1054 /* Helper function. Force an update of the current architecture.
1056 The actual architecture selected is determined by INFO, \`\`(gdb) set
1057 architecture'' et.al., the existing architecture and BFD's default
1058 architecture. INFO should be initialized to zero and then selected
1059 fields should be updated.
1061 Returns non-zero if the update succeeds */
1063 extern int gdbarch_update_p (struct gdbarch_info info);
1066 /* Helper function. Find an architecture matching info.
1068 INFO should be initialized using gdbarch_info_init, relevant fields
1069 set, and then finished using gdbarch_info_fill.
1071 Returns the corresponding architecture, or NULL if no matching
1072 architecture was found. "current_gdbarch" is not updated. */
1074 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1077 /* Helper function. Set the global "current_gdbarch" to "gdbarch".
1079 FIXME: kettenis/20031124: Of the functions that follow, only
1080 gdbarch_from_bfd is supposed to survive. The others will
1081 dissappear since in the future GDB will (hopefully) be truly
1082 multi-arch. However, for now we're still stuck with the concept of
1083 a single active architecture. */
1085 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1088 /* Register per-architecture data-pointer.
1090 Reserve space for a per-architecture data-pointer. An identifier
1091 for the reserved data-pointer is returned. That identifer should
1092 be saved in a local static variable.
1094 Memory for the per-architecture data shall be allocated using
1095 gdbarch_obstack_zalloc. That memory will be deleted when the
1096 corresponding architecture object is deleted.
1098 When a previously created architecture is re-selected, the
1099 per-architecture data-pointer for that previous architecture is
1100 restored. INIT() is not re-called.
1102 Multiple registrarants for any architecture are allowed (and
1103 strongly encouraged). */
1105 struct gdbarch_data;
1107 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1108 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1109 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1110 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1111 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1112 struct gdbarch_data *data,
1115 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1119 /* Register per-architecture memory region.
1121 Provide a memory-region swap mechanism. Per-architecture memory
1122 region are created. These memory regions are swapped whenever the
1123 architecture is changed. For a new architecture, the memory region
1124 is initialized with zero (0) and the INIT function is called.
1126 Memory regions are swapped / initialized in the order that they are
1127 registered. NULL DATA and/or INIT values can be specified.
1129 New code should use gdbarch_data_register_*(). */
1131 typedef void (gdbarch_swap_ftype) (void);
1132 extern void deprecated_register_gdbarch_swap (void *data, unsigned long size, gdbarch_swap_ftype *init);
1133 #define DEPRECATED_REGISTER_GDBARCH_SWAP(VAR) deprecated_register_gdbarch_swap (&(VAR), sizeof ((VAR)), NULL)
1137 /* Set the dynamic target-system-dependent parameters (architecture,
1138 byte-order, ...) using information found in the BFD */
1140 extern void set_gdbarch_from_file (bfd *);
1143 /* Initialize the current architecture to the "first" one we find on
1146 extern void initialize_current_architecture (void);
1148 /* gdbarch trace variable */
1149 extern int gdbarch_debug;
1151 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1156 #../move-if-change new-gdbarch.h gdbarch.h
1157 compare_new gdbarch.h
1164 exec > new-gdbarch.c
1169 #include "arch-utils.h"
1172 #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
1175 #include "floatformat.h"
1177 #include "gdb_assert.h"
1178 #include "gdb_string.h"
1179 #include "gdb-events.h"
1180 #include "reggroups.h"
1182 #include "gdb_obstack.h"
1184 /* Static function declarations */
1186 static void alloc_gdbarch_data (struct gdbarch *);
1188 /* Non-zero if we want to trace architecture code. */
1190 #ifndef GDBARCH_DEBUG
1191 #define GDBARCH_DEBUG 0
1193 int gdbarch_debug = GDBARCH_DEBUG;
1195 show_gdbarch_debug (struct ui_file *file, int from_tty,
1196 struct cmd_list_element *c, const char *value)
1198 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1202 pformat (const struct floatformat *format)
1207 return format->name;
1212 # gdbarch open the gdbarch object
1214 printf "/* Maintain the struct gdbarch object */\n"
1216 printf "struct gdbarch\n"
1218 printf " /* Has this architecture been fully initialized? */\n"
1219 printf " int initialized_p;\n"
1221 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1222 printf " struct obstack *obstack;\n"
1224 printf " /* basic architectural information */\n"
1225 function_list |
while do_read
1229 printf " ${returntype} ${function};\n"
1233 printf " /* target specific vector. */\n"
1234 printf " struct gdbarch_tdep *tdep;\n"
1235 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1237 printf " /* per-architecture data-pointers */\n"
1238 printf " unsigned nr_data;\n"
1239 printf " void **data;\n"
1241 printf " /* per-architecture swap-regions */\n"
1242 printf " struct gdbarch_swap *swap;\n"
1245 /* Multi-arch values.
1247 When extending this structure you must:
1249 Add the field below.
1251 Declare set/get functions and define the corresponding
1254 gdbarch_alloc(): If zero/NULL is not a suitable default,
1255 initialize the new field.
1257 verify_gdbarch(): Confirm that the target updated the field
1260 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1263 \`\`startup_gdbarch()'': Append an initial value to the static
1264 variable (base values on the host's c-type system).
1266 get_gdbarch(): Implement the set/get functions (probably using
1267 the macro's as shortcuts).
1272 function_list |
while do_read
1274 if class_is_variable_p
1276 printf " ${returntype} ${function};\n"
1277 elif class_is_function_p
1279 printf " gdbarch_${function}_ftype *${function};\n"
1284 # A pre-initialized vector
1288 /* The default architecture uses host values (for want of a better
1292 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1294 printf "struct gdbarch startup_gdbarch =\n"
1296 printf " 1, /* Always initialized. */\n"
1297 printf " NULL, /* The obstack. */\n"
1298 printf " /* basic architecture information */\n"
1299 function_list |
while do_read
1303 printf " ${staticdefault}, /* ${function} */\n"
1307 /* target specific vector and its dump routine */
1309 /*per-architecture data-pointers and swap regions */
1311 /* Multi-arch values */
1313 function_list |
while do_read
1315 if class_is_function_p || class_is_variable_p
1317 printf " ${staticdefault}, /* ${function} */\n"
1321 /* startup_gdbarch() */
1324 struct gdbarch *current_gdbarch = &startup_gdbarch;
1327 # Create a new gdbarch struct
1330 /* Create a new \`\`struct gdbarch'' based on information provided by
1331 \`\`struct gdbarch_info''. */
1336 gdbarch_alloc (const struct gdbarch_info *info,
1337 struct gdbarch_tdep *tdep)
1339 /* NOTE: The new architecture variable is named \`\`current_gdbarch''
1340 so that macros such as TARGET_DOUBLE_BIT, when expanded, refer to
1341 the current local architecture and not the previous global
1342 architecture. This ensures that the new architectures initial
1343 values are not influenced by the previous architecture. Once
1344 everything is parameterised with gdbarch, this will go away. */
1345 struct gdbarch *current_gdbarch;
1347 /* Create an obstack for allocating all the per-architecture memory,
1348 then use that to allocate the architecture vector. */
1349 struct obstack *obstack = XMALLOC (struct obstack);
1350 obstack_init (obstack);
1351 current_gdbarch = obstack_alloc (obstack, sizeof (*current_gdbarch));
1352 memset (current_gdbarch, 0, sizeof (*current_gdbarch));
1353 current_gdbarch->obstack = obstack;
1355 alloc_gdbarch_data (current_gdbarch);
1357 current_gdbarch->tdep = tdep;
1360 function_list |
while do_read
1364 printf " current_gdbarch->${function} = info->${function};\n"
1368 printf " /* Force the explicit initialization of these. */\n"
1369 function_list |
while do_read
1371 if class_is_function_p || class_is_variable_p
1373 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1375 printf " current_gdbarch->${function} = ${predefault};\n"
1380 /* gdbarch_alloc() */
1382 return current_gdbarch;
1386 # Free a gdbarch struct.
1390 /* Allocate extra space using the per-architecture obstack. */
1393 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1395 void *data = obstack_alloc (arch->obstack, size);
1396 memset (data, 0, size);
1401 /* Free a gdbarch struct. This should never happen in normal
1402 operation --- once you've created a gdbarch, you keep it around.
1403 However, if an architecture's init function encounters an error
1404 building the structure, it may need to clean up a partially
1405 constructed gdbarch. */
1408 gdbarch_free (struct gdbarch *arch)
1410 struct obstack *obstack;
1411 gdb_assert (arch != NULL);
1412 gdb_assert (!arch->initialized_p);
1413 obstack = arch->obstack;
1414 obstack_free (obstack, 0); /* Includes the ARCH. */
1419 # verify a new architecture
1423 /* Ensure that all values in a GDBARCH are reasonable. */
1425 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1426 just happens to match the global variable \`\`current_gdbarch''. That
1427 way macros refering to that variable get the local and not the global
1428 version - ulgh. Once everything is parameterised with gdbarch, this
1432 verify_gdbarch (struct gdbarch *current_gdbarch)
1434 struct ui_file *log;
1435 struct cleanup *cleanups;
1438 log = mem_fileopen ();
1439 cleanups = make_cleanup_ui_file_delete (log);
1441 if (current_gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1442 fprintf_unfiltered (log, "\n\tbyte-order");
1443 if (current_gdbarch->bfd_arch_info == NULL)
1444 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1445 /* Check those that need to be defined for the given multi-arch level. */
1447 function_list |
while do_read
1449 if class_is_function_p || class_is_variable_p
1451 if [ "x${invalid_p}" = "x0" ]
1453 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1454 elif class_is_predicate_p
1456 printf " /* Skip verify of ${function}, has predicate */\n"
1457 # FIXME: See do_read for potential simplification
1458 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1460 printf " if (${invalid_p})\n"
1461 printf " current_gdbarch->${function} = ${postdefault};\n"
1462 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1464 printf " if (current_gdbarch->${function} == ${predefault})\n"
1465 printf " current_gdbarch->${function} = ${postdefault};\n"
1466 elif [ -n "${postdefault}" ]
1468 printf " if (current_gdbarch->${function} == 0)\n"
1469 printf " current_gdbarch->${function} = ${postdefault};\n"
1470 elif [ -n "${invalid_p}" ]
1472 printf " if (${invalid_p})\n"
1473 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1474 elif [ -n "${predefault}" ]
1476 printf " if (current_gdbarch->${function} == ${predefault})\n"
1477 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1482 buf = ui_file_xstrdup (log, &dummy);
1483 make_cleanup (xfree, buf);
1484 if (strlen (buf) > 0)
1485 internal_error (__FILE__, __LINE__,
1486 _("verify_gdbarch: the following are invalid ...%s"),
1488 do_cleanups (cleanups);
1492 # dump the structure
1496 /* Print out the details of the current architecture. */
1498 /* NOTE/WARNING: The parameter is called \`\`current_gdbarch'' so that it
1499 just happens to match the global variable \`\`current_gdbarch''. That
1500 way macros refering to that variable get the local and not the global
1501 version - ulgh. Once everything is parameterised with gdbarch, this
1505 gdbarch_dump (struct gdbarch *current_gdbarch, struct ui_file *file)
1507 const char *gdb_xm_file = "<not-defined>";
1508 const char *gdb_nm_file = "<not-defined>";
1509 const char *gdb_tm_file = "<not-defined>";
1510 #if defined (GDB_XM_FILE)
1511 gdb_xm_file = GDB_XM_FILE;
1513 fprintf_unfiltered (file,
1514 "gdbarch_dump: GDB_XM_FILE = %s\\n",
1516 #if defined (GDB_NM_FILE)
1517 gdb_nm_file = GDB_NM_FILE;
1519 fprintf_unfiltered (file,
1520 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1522 #if defined (GDB_TM_FILE)
1523 gdb_tm_file = GDB_TM_FILE;
1525 fprintf_unfiltered (file,
1526 "gdbarch_dump: GDB_TM_FILE = %s\\n",
1529 function_list |
sort -t: -k 4 |
while do_read
1531 # First the predicate
1532 if class_is_predicate_p
1534 if test -n "${macro}"
1536 printf "#ifdef ${macro}_P\n"
1537 printf " fprintf_unfiltered (file,\n"
1538 printf " \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1539 printf " \"${macro}_P()\",\n"
1540 printf " XSTRING (${macro}_P ()));\n"
1543 printf " fprintf_unfiltered (file,\n"
1544 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1545 printf " gdbarch_${function}_p (current_gdbarch));\n"
1547 # Print the macro definition.
1548 if test -n "${macro}"
1550 printf "#ifdef ${macro}\n"
1551 if class_is_function_p
1553 printf " fprintf_unfiltered (file,\n"
1554 printf " \"gdbarch_dump: %%s # %%s\\\\n\",\n"
1555 printf " \"${macro}(${actual})\",\n"
1556 printf " XSTRING (${macro} (${actual})));\n"
1558 printf " fprintf_unfiltered (file,\n"
1559 printf " \"gdbarch_dump: ${macro} # %%s\\\\n\",\n"
1560 printf " XSTRING (${macro}));\n"
1564 # Print the corresponding value.
1565 if class_is_function_p
1567 printf " fprintf_unfiltered (file,\n"
1568 printf " \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1569 printf " (long) current_gdbarch->${function});\n"
1572 case "${print}:${returntype}" in
1575 print
="paddr_nz (current_gdbarch->${function})"
1579 print
="paddr_d (current_gdbarch->${function})"
1585 printf " fprintf_unfiltered (file,\n"
1586 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1587 printf " ${print});\n"
1591 if (current_gdbarch->dump_tdep != NULL)
1592 current_gdbarch->dump_tdep (current_gdbarch, file);
1600 struct gdbarch_tdep *
1601 gdbarch_tdep (struct gdbarch *gdbarch)
1603 if (gdbarch_debug >= 2)
1604 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1605 return gdbarch->tdep;
1609 function_list |
while do_read
1611 if class_is_predicate_p
1615 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1617 printf " gdb_assert (gdbarch != NULL);\n"
1618 printf " return ${predicate};\n"
1621 if class_is_function_p
1624 printf "${returntype}\n"
1625 if [ "x${formal}" = "xvoid" ]
1627 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1629 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1632 printf " gdb_assert (gdbarch != NULL);\n"
1633 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1634 if class_is_predicate_p
&& test -n "${predefault}"
1636 # Allow a call to a function with a predicate.
1637 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1639 printf " if (gdbarch_debug >= 2)\n"
1640 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1641 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1643 if class_is_multiarch_p
1650 if class_is_multiarch_p
1652 params
="gdbarch, ${actual}"
1657 if [ "x${returntype}" = "xvoid" ]
1659 printf " gdbarch->${function} (${params});\n"
1661 printf " return gdbarch->${function} (${params});\n"
1666 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1667 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1669 printf " gdbarch->${function} = ${function};\n"
1671 elif class_is_variable_p
1674 printf "${returntype}\n"
1675 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1677 printf " gdb_assert (gdbarch != NULL);\n"
1678 if [ "x${invalid_p}" = "x0" ]
1680 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1681 elif [ -n "${invalid_p}" ]
1683 printf " /* Check variable is valid. */\n"
1684 printf " gdb_assert (!(${invalid_p}));\n"
1685 elif [ -n "${predefault}" ]
1687 printf " /* Check variable changed from pre-default. */\n"
1688 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1690 printf " if (gdbarch_debug >= 2)\n"
1691 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1692 printf " return gdbarch->${function};\n"
1696 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1697 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1699 printf " gdbarch->${function} = ${function};\n"
1701 elif class_is_info_p
1704 printf "${returntype}\n"
1705 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1707 printf " gdb_assert (gdbarch != NULL);\n"
1708 printf " if (gdbarch_debug >= 2)\n"
1709 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1710 printf " return gdbarch->${function};\n"
1715 # All the trailing guff
1719 /* Keep a registry of per-architecture data-pointers required by GDB
1726 gdbarch_data_pre_init_ftype *pre_init;
1727 gdbarch_data_post_init_ftype *post_init;
1730 struct gdbarch_data_registration
1732 struct gdbarch_data *data;
1733 struct gdbarch_data_registration *next;
1736 struct gdbarch_data_registry
1739 struct gdbarch_data_registration *registrations;
1742 struct gdbarch_data_registry gdbarch_data_registry =
1747 static struct gdbarch_data *
1748 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1749 gdbarch_data_post_init_ftype *post_init)
1751 struct gdbarch_data_registration **curr;
1752 /* Append the new registraration. */
1753 for (curr = &gdbarch_data_registry.registrations;
1755 curr = &(*curr)->next);
1756 (*curr) = XMALLOC (struct gdbarch_data_registration);
1757 (*curr)->next = NULL;
1758 (*curr)->data = XMALLOC (struct gdbarch_data);
1759 (*curr)->data->index = gdbarch_data_registry.nr++;
1760 (*curr)->data->pre_init = pre_init;
1761 (*curr)->data->post_init = post_init;
1762 (*curr)->data->init_p = 1;
1763 return (*curr)->data;
1766 struct gdbarch_data *
1767 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1769 return gdbarch_data_register (pre_init, NULL);
1772 struct gdbarch_data *
1773 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1775 return gdbarch_data_register (NULL, post_init);
1778 /* Create/delete the gdbarch data vector. */
1781 alloc_gdbarch_data (struct gdbarch *gdbarch)
1783 gdb_assert (gdbarch->data == NULL);
1784 gdbarch->nr_data = gdbarch_data_registry.nr;
1785 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1788 /* Initialize the current value of the specified per-architecture
1792 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1793 struct gdbarch_data *data,
1796 gdb_assert (data->index < gdbarch->nr_data);
1797 gdb_assert (gdbarch->data[data->index] == NULL);
1798 gdb_assert (data->pre_init == NULL);
1799 gdbarch->data[data->index] = pointer;
1802 /* Return the current value of the specified per-architecture
1806 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1808 gdb_assert (data->index < gdbarch->nr_data);
1809 if (gdbarch->data[data->index] == NULL)
1811 /* The data-pointer isn't initialized, call init() to get a
1813 if (data->pre_init != NULL)
1814 /* Mid architecture creation: pass just the obstack, and not
1815 the entire architecture, as that way it isn't possible for
1816 pre-init code to refer to undefined architecture
1818 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1819 else if (gdbarch->initialized_p
1820 && data->post_init != NULL)
1821 /* Post architecture creation: pass the entire architecture
1822 (as all fields are valid), but be careful to also detect
1823 recursive references. */
1825 gdb_assert (data->init_p);
1827 gdbarch->data[data->index] = data->post_init (gdbarch);
1831 /* The architecture initialization hasn't completed - punt -
1832 hope that the caller knows what they are doing. Once
1833 deprecated_set_gdbarch_data has been initialized, this can be
1834 changed to an internal error. */
1836 gdb_assert (gdbarch->data[data->index] != NULL);
1838 return gdbarch->data[data->index];
1843 /* Keep a registry of swapped data required by GDB modules. */
1848 struct gdbarch_swap_registration *source;
1849 struct gdbarch_swap *next;
1852 struct gdbarch_swap_registration
1855 unsigned long sizeof_data;
1856 gdbarch_swap_ftype *init;
1857 struct gdbarch_swap_registration *next;
1860 struct gdbarch_swap_registry
1863 struct gdbarch_swap_registration *registrations;
1866 struct gdbarch_swap_registry gdbarch_swap_registry =
1872 deprecated_register_gdbarch_swap (void *data,
1873 unsigned long sizeof_data,
1874 gdbarch_swap_ftype *init)
1876 struct gdbarch_swap_registration **rego;
1877 for (rego = &gdbarch_swap_registry.registrations;
1879 rego = &(*rego)->next);
1880 (*rego) = XMALLOC (struct gdbarch_swap_registration);
1881 (*rego)->next = NULL;
1882 (*rego)->init = init;
1883 (*rego)->data = data;
1884 (*rego)->sizeof_data = sizeof_data;
1888 current_gdbarch_swap_init_hack (void)
1890 struct gdbarch_swap_registration *rego;
1891 struct gdbarch_swap **curr = ¤t_gdbarch->swap;
1892 for (rego = gdbarch_swap_registry.registrations;
1896 if (rego->data != NULL)
1898 (*curr) = GDBARCH_OBSTACK_ZALLOC (current_gdbarch,
1899 struct gdbarch_swap);
1900 (*curr)->source = rego;
1901 (*curr)->swap = gdbarch_obstack_zalloc (current_gdbarch,
1903 (*curr)->next = NULL;
1904 curr = &(*curr)->next;
1906 if (rego->init != NULL)
1911 static struct gdbarch *
1912 current_gdbarch_swap_out_hack (void)
1914 struct gdbarch *old_gdbarch = current_gdbarch;
1915 struct gdbarch_swap *curr;
1917 gdb_assert (old_gdbarch != NULL);
1918 for (curr = old_gdbarch->swap;
1922 memcpy (curr->swap, curr->source->data, curr->source->sizeof_data);
1923 memset (curr->source->data, 0, curr->source->sizeof_data);
1925 current_gdbarch = NULL;
1930 current_gdbarch_swap_in_hack (struct gdbarch *new_gdbarch)
1932 struct gdbarch_swap *curr;
1934 gdb_assert (current_gdbarch == NULL);
1935 for (curr = new_gdbarch->swap;
1938 memcpy (curr->source->data, curr->swap, curr->source->sizeof_data);
1939 current_gdbarch = new_gdbarch;
1943 /* Keep a registry of the architectures known by GDB. */
1945 struct gdbarch_registration
1947 enum bfd_architecture bfd_architecture;
1948 gdbarch_init_ftype *init;
1949 gdbarch_dump_tdep_ftype *dump_tdep;
1950 struct gdbarch_list *arches;
1951 struct gdbarch_registration *next;
1954 static struct gdbarch_registration *gdbarch_registry = NULL;
1957 append_name (const char ***buf, int *nr, const char *name)
1959 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1965 gdbarch_printable_names (void)
1967 /* Accumulate a list of names based on the registed list of
1969 enum bfd_architecture a;
1971 const char **arches = NULL;
1972 struct gdbarch_registration *rego;
1973 for (rego = gdbarch_registry;
1977 const struct bfd_arch_info *ap;
1978 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1980 internal_error (__FILE__, __LINE__,
1981 _("gdbarch_architecture_names: multi-arch unknown"));
1984 append_name (&arches, &nr_arches, ap->printable_name);
1989 append_name (&arches, &nr_arches, NULL);
1995 gdbarch_register (enum bfd_architecture bfd_architecture,
1996 gdbarch_init_ftype *init,
1997 gdbarch_dump_tdep_ftype *dump_tdep)
1999 struct gdbarch_registration **curr;
2000 const struct bfd_arch_info *bfd_arch_info;
2001 /* Check that BFD recognizes this architecture */
2002 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2003 if (bfd_arch_info == NULL)
2005 internal_error (__FILE__, __LINE__,
2006 _("gdbarch: Attempt to register unknown architecture (%d)"),
2009 /* Check that we haven't seen this architecture before */
2010 for (curr = &gdbarch_registry;
2012 curr = &(*curr)->next)
2014 if (bfd_architecture == (*curr)->bfd_architecture)
2015 internal_error (__FILE__, __LINE__,
2016 _("gdbarch: Duplicate registraration of architecture (%s)"),
2017 bfd_arch_info->printable_name);
2021 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
2022 bfd_arch_info->printable_name,
2025 (*curr) = XMALLOC (struct gdbarch_registration);
2026 (*curr)->bfd_architecture = bfd_architecture;
2027 (*curr)->init = init;
2028 (*curr)->dump_tdep = dump_tdep;
2029 (*curr)->arches = NULL;
2030 (*curr)->next = NULL;
2034 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2035 gdbarch_init_ftype *init)
2037 gdbarch_register (bfd_architecture, init, NULL);
2041 /* Look for an architecture using gdbarch_info. */
2043 struct gdbarch_list *
2044 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2045 const struct gdbarch_info *info)
2047 for (; arches != NULL; arches = arches->next)
2049 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2051 if (info->byte_order != arches->gdbarch->byte_order)
2053 if (info->osabi != arches->gdbarch->osabi)
2055 if (info->target_desc != arches->gdbarch->target_desc)
2063 /* Find an architecture that matches the specified INFO. Create a new
2064 architecture if needed. Return that new architecture. Assumes
2065 that there is no current architecture. */
2067 static struct gdbarch *
2068 find_arch_by_info (struct gdbarch_info info)
2070 struct gdbarch *new_gdbarch;
2071 struct gdbarch_registration *rego;
2073 /* The existing architecture has been swapped out - all this code
2074 works from a clean slate. */
2075 gdb_assert (current_gdbarch == NULL);
2077 /* Fill in missing parts of the INFO struct using a number of
2078 sources: "set ..."; INFOabfd supplied; and the global
2080 gdbarch_info_fill (&info);
2082 /* Must have found some sort of architecture. */
2083 gdb_assert (info.bfd_arch_info != NULL);
2087 fprintf_unfiltered (gdb_stdlog,
2088 "find_arch_by_info: info.bfd_arch_info %s\n",
2089 (info.bfd_arch_info != NULL
2090 ? info.bfd_arch_info->printable_name
2092 fprintf_unfiltered (gdb_stdlog,
2093 "find_arch_by_info: info.byte_order %d (%s)\n",
2095 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2096 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2098 fprintf_unfiltered (gdb_stdlog,
2099 "find_arch_by_info: info.osabi %d (%s)\n",
2100 info.osabi, gdbarch_osabi_name (info.osabi));
2101 fprintf_unfiltered (gdb_stdlog,
2102 "find_arch_by_info: info.abfd 0x%lx\n",
2104 fprintf_unfiltered (gdb_stdlog,
2105 "find_arch_by_info: info.tdep_info 0x%lx\n",
2106 (long) info.tdep_info);
2109 /* Find the tdep code that knows about this architecture. */
2110 for (rego = gdbarch_registry;
2113 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2118 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2119 "No matching architecture\n");
2123 /* Ask the tdep code for an architecture that matches "info". */
2124 new_gdbarch = rego->init (info, rego->arches);
2126 /* Did the tdep code like it? No. Reject the change and revert to
2127 the old architecture. */
2128 if (new_gdbarch == NULL)
2131 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2132 "Target rejected architecture\n");
2136 /* Is this a pre-existing architecture (as determined by already
2137 being initialized)? Move it to the front of the architecture
2138 list (keeping the list sorted Most Recently Used). */
2139 if (new_gdbarch->initialized_p)
2141 struct gdbarch_list **list;
2142 struct gdbarch_list *this;
2144 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2145 "Previous architecture 0x%08lx (%s) selected\n",
2147 new_gdbarch->bfd_arch_info->printable_name);
2148 /* Find the existing arch in the list. */
2149 for (list = ®o->arches;
2150 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2151 list = &(*list)->next);
2152 /* It had better be in the list of architectures. */
2153 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2156 (*list) = this->next;
2157 /* Insert THIS at the front. */
2158 this->next = rego->arches;
2159 rego->arches = this;
2164 /* It's a new architecture. */
2166 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
2167 "New architecture 0x%08lx (%s) selected\n",
2169 new_gdbarch->bfd_arch_info->printable_name);
2171 /* Insert the new architecture into the front of the architecture
2172 list (keep the list sorted Most Recently Used). */
2174 struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2175 this->next = rego->arches;
2176 this->gdbarch = new_gdbarch;
2177 rego->arches = this;
2180 /* Check that the newly installed architecture is valid. Plug in
2181 any post init values. */
2182 new_gdbarch->dump_tdep = rego->dump_tdep;
2183 verify_gdbarch (new_gdbarch);
2184 new_gdbarch->initialized_p = 1;
2186 /* Initialize any per-architecture swap areas. This phase requires
2187 a valid global CURRENT_GDBARCH. Set it momentarially, and then
2188 swap the entire architecture out. */
2189 current_gdbarch = new_gdbarch;
2190 current_gdbarch_swap_init_hack ();
2191 current_gdbarch_swap_out_hack ();
2194 gdbarch_dump (new_gdbarch, gdb_stdlog);
2200 gdbarch_find_by_info (struct gdbarch_info info)
2202 /* Save the previously selected architecture, setting the global to
2203 NULL. This stops things like gdbarch->init() trying to use the
2204 previous architecture's configuration. The previous architecture
2205 may not even be of the same architecture family. The most recent
2206 architecture of the same family is found at the head of the
2207 rego->arches list. */
2208 struct gdbarch *old_gdbarch = current_gdbarch_swap_out_hack ();
2210 /* Find the specified architecture. */
2211 struct gdbarch *new_gdbarch = find_arch_by_info (info);
2213 /* Restore the existing architecture. */
2214 gdb_assert (current_gdbarch == NULL);
2215 current_gdbarch_swap_in_hack (old_gdbarch);
2220 /* Make the specified architecture current, swapping the existing one
2224 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2226 gdb_assert (new_gdbarch != NULL);
2227 gdb_assert (current_gdbarch != NULL);
2228 gdb_assert (new_gdbarch->initialized_p);
2229 current_gdbarch_swap_out_hack ();
2230 current_gdbarch_swap_in_hack (new_gdbarch);
2231 architecture_changed_event ();
2232 flush_cached_frames ();
2235 extern void _initialize_gdbarch (void);
2238 _initialize_gdbarch (void)
2240 struct cmd_list_element *c;
2242 add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2243 Set architecture debugging."), _("\\
2244 Show architecture debugging."), _("\\
2245 When non-zero, architecture debugging is enabled."),
2248 &setdebuglist, &showdebuglist);
2254 #../move-if-change new-gdbarch.c gdbarch.c
2255 compare_new gdbarch.c