3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998-2012 Free Software Foundation, Inc.
7 # This file is part of GDB.
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 # Make certain that the script is not running in an internationalized
25 LC_ALL=C ; export LC_ALL
33 echo "${file} missing? cp new-${file} ${file}" 1>&2
34 elif diff -u ${file} new-${file}
36 echo "${file} unchanged" 1>&2
38 echo "${file} has changed? cp new-${file} ${file}" 1>&2
43 # Format of the input table
44 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
52 if test "${line}" = ""
55 elif test "${line}" = "#" -a "${comment}" = ""
58 elif expr "${line}" : "#" > /dev/null
64 # The semantics of IFS varies between different SH's. Some
65 # treat ``::' as three fields while some treat it as just too.
66 # Work around this by eliminating ``::'' ....
67 line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
69 OFS="${IFS}" ; IFS="[:]"
70 eval read ${read} <<EOF
75 if test -n "${garbage_at_eol}"
77 echo "Garbage at end-of-line in ${line}" 1>&2
82 # .... and then going back through each field and strip out those
83 # that ended up with just that space character.
86 if eval test \"\${${r}}\" = \"\ \"
93 m ) staticdefault="${predefault}" ;;
94 M ) staticdefault="0" ;;
95 * ) test "${staticdefault}" || staticdefault=0 ;;
100 case "${invalid_p}" in
102 if test -n "${predefault}"
104 #invalid_p="gdbarch->${function} == ${predefault}"
105 predicate="gdbarch->${function} != ${predefault}"
106 elif class_is_variable_p
108 predicate="gdbarch->${function} != 0"
109 elif class_is_function_p
111 predicate="gdbarch->${function} != NULL"
115 echo "Predicate function ${function} with invalid_p." 1>&2
122 # PREDEFAULT is a valid fallback definition of MEMBER when
123 # multi-arch is not enabled. This ensures that the
124 # default value, when multi-arch is the same as the
125 # default value when not multi-arch. POSTDEFAULT is
126 # always a valid definition of MEMBER as this again
127 # ensures consistency.
129 if [ -n "${postdefault}" ]
131 fallbackdefault="${postdefault}"
132 elif [ -n "${predefault}" ]
134 fallbackdefault="${predefault}"
139 #NOT YET: See gdbarch.log for basic verification of
154 fallback_default_p ()
156 [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
157 || [ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
160 class_is_variable_p ()
168 class_is_function_p ()
171 *f* | *F* | *m* | *M* ) true ;;
176 class_is_multiarch_p ()
184 class_is_predicate_p ()
187 *F* | *V* | *M* ) true ;;
201 # dump out/verify the doco
211 # F -> function + predicate
212 # hiding a function + predicate to test function validity
215 # V -> variable + predicate
216 # hiding a variable + predicate to test variables validity
218 # hiding something from the ``struct info'' object
219 # m -> multi-arch function
220 # hiding a multi-arch function (parameterised with the architecture)
221 # M -> multi-arch function + predicate
222 # hiding a multi-arch function + predicate to test function validity
226 # For functions, the return type; for variables, the data type
230 # For functions, the member function name; for variables, the
231 # variable name. Member function names are always prefixed with
232 # ``gdbarch_'' for name-space purity.
236 # The formal argument list. It is assumed that the formal
237 # argument list includes the actual name of each list element.
238 # A function with no arguments shall have ``void'' as the
239 # formal argument list.
243 # The list of actual arguments. The arguments specified shall
244 # match the FORMAL list given above. Functions with out
245 # arguments leave this blank.
249 # To help with the GDB startup a static gdbarch object is
250 # created. STATICDEFAULT is the value to insert into that
251 # static gdbarch object. Since this a static object only
252 # simple expressions can be used.
254 # If STATICDEFAULT is empty, zero is used.
258 # An initial value to assign to MEMBER of the freshly
259 # malloc()ed gdbarch object. After initialization, the
260 # freshly malloc()ed object is passed to the target
261 # architecture code for further updates.
263 # If PREDEFAULT is empty, zero is used.
265 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
266 # INVALID_P are specified, PREDEFAULT will be used as the
267 # default for the non- multi-arch target.
269 # A zero PREDEFAULT function will force the fallback to call
272 # Variable declarations can refer to ``gdbarch'' which will
273 # contain the current architecture. Care should be taken.
277 # A value to assign to MEMBER of the new gdbarch object should
278 # the target architecture code fail to change the PREDEFAULT
281 # If POSTDEFAULT is empty, no post update is performed.
283 # If both INVALID_P and POSTDEFAULT are non-empty then
284 # INVALID_P will be used to determine if MEMBER should be
285 # changed to POSTDEFAULT.
287 # If a non-empty POSTDEFAULT and a zero INVALID_P are
288 # specified, POSTDEFAULT will be used as the default for the
289 # non- multi-arch target (regardless of the value of
292 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
294 # Variable declarations can refer to ``gdbarch'' which
295 # will contain the current architecture. Care should be
300 # A predicate equation that validates MEMBER. Non-zero is
301 # returned if the code creating the new architecture failed to
302 # initialize MEMBER or the initialized the member is invalid.
303 # If POSTDEFAULT is non-empty then MEMBER will be updated to
304 # that value. If POSTDEFAULT is empty then internal_error()
307 # If INVALID_P is empty, a check that MEMBER is no longer
308 # equal to PREDEFAULT is used.
310 # The expression ``0'' disables the INVALID_P check making
311 # PREDEFAULT a legitimate value.
313 # See also PREDEFAULT and POSTDEFAULT.
317 # An optional expression that convers MEMBER to a value
318 # suitable for formatting using %s.
320 # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
321 # or plongest (anything else) is used.
323 garbage_at_eol ) : ;;
325 # Catches stray fields.
328 echo "Bad field ${field}"
336 # See below (DOCO) for description of each field
338 i:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (gdbarch)->printable_name
340 i:int:byte_order:::BFD_ENDIAN_BIG
341 i:int:byte_order_for_code:::BFD_ENDIAN_BIG
343 i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
345 i:const struct target_desc *:target_desc:::::::host_address_to_string (gdbarch->target_desc)
347 # The bit byte-order has to do just with numbering of bits in debugging symbols
348 # and such. Conceptually, it's quite separate from byte/word byte order.
349 v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
351 # Number of bits in a char or unsigned char for the target machine.
352 # Just like CHAR_BIT in <limits.h> but describes the target machine.
353 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
355 # Number of bits in a short or unsigned short for the target machine.
356 v:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
357 # Number of bits in an int or unsigned int for the target machine.
358 v:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
359 # Number of bits in a long or unsigned long for the target machine.
360 v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
361 # Number of bits in a long long or unsigned long long for the target
363 v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
364 # Alignment of a long long or unsigned long long for the target
366 v:int:long_long_align_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
368 # The ABI default bit-size and format for "half", "float", "double", and
369 # "long double". These bit/format pairs should eventually be combined
370 # into a single object. For the moment, just initialize them as a pair.
371 # Each format describes both the big and little endian layouts (if
374 v:int:half_bit:::16:2*TARGET_CHAR_BIT::0
375 v:const struct floatformat **:half_format:::::floatformats_ieee_half::pformat (gdbarch->half_format)
376 v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
377 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format)
378 v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
379 v:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (gdbarch->double_format)
380 v:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
381 v:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (gdbarch->long_double_format)
383 # For most targets, a pointer on the target and its representation as an
384 # address in GDB have the same size and "look the same". For such a
385 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
386 # / addr_bit will be set from it.
388 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
389 # also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
390 # gdbarch_address_to_pointer as well.
392 # ptr_bit is the size of a pointer on the target
393 v:int:ptr_bit:::8 * sizeof (void*):gdbarch->int_bit::0
394 # addr_bit is the size of a target address as represented in gdb
395 v:int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (gdbarch):
397 # dwarf2_addr_size is the target address size as used in the Dwarf debug
398 # info. For .debug_frame FDEs, this is supposed to be the target address
399 # size from the associated CU header, and which is equivalent to the
400 # DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
401 # Unfortunately there is no good way to determine this value. Therefore
402 # dwarf2_addr_size simply defaults to the target pointer size.
404 # dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
405 # defined using the target's pointer size so far.
407 # Note that dwarf2_addr_size only needs to be redefined by a target if the
408 # GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
409 # and if Dwarf versions < 4 need to be supported.
410 v:int:dwarf2_addr_size:::sizeof (void*):0:gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT:
412 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
413 v:int:char_signed:::1:-1:1
415 F:CORE_ADDR:read_pc:struct regcache *regcache:regcache
416 F:void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
417 # Function for getting target's idea of a frame pointer. FIXME: GDB's
418 # whole scheme for dealing with "frames" and "frame pointers" needs a
420 m:void:virtual_frame_pointer:CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset:pc, frame_regnum, frame_offset:0:legacy_virtual_frame_pointer::0
422 M:enum register_status:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
423 # Read a register into a new struct value. If the register is wholly
424 # or partly unavailable, this should call mark_value_bytes_unavailable
425 # as appropriate. If this is defined, then pseudo_register_read will
427 M:struct value *:pseudo_register_read_value:struct regcache *regcache, int cookednum:regcache, cookednum
428 M:void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
430 v:int:num_regs:::0:-1
431 # This macro gives the number of pseudo-registers that live in the
432 # register namespace but do not get fetched or stored on the target.
433 # These pseudo-registers may be aliases for other registers,
434 # combinations of other registers, or they may be computed by GDB.
435 v:int:num_pseudo_regs:::0:0::0
437 # Assemble agent expression bytecode to collect pseudo-register REG.
438 # Return -1 if something goes wrong, 0 otherwise.
439 M:int:ax_pseudo_register_collect:struct agent_expr *ax, int reg:ax, reg
441 # Assemble agent expression bytecode to push the value of pseudo-register
442 # REG on the interpreter stack.
443 # Return -1 if something goes wrong, 0 otherwise.
444 M:int:ax_pseudo_register_push_stack:struct agent_expr *ax, int reg:ax, reg
446 # GDB's standard (or well known) register numbers. These can map onto
447 # a real register or a pseudo (computed) register or not be defined at
449 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
450 v:int:sp_regnum:::-1:-1::0
451 v:int:pc_regnum:::-1:-1::0
452 v:int:ps_regnum:::-1:-1::0
453 v:int:fp0_regnum:::0:-1::0
454 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
455 m:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
456 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
457 m:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
458 # Convert from an sdb register number to an internal gdb register number.
459 m:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
460 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
461 m:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
462 m:const char *:register_name:int regnr:regnr::0
464 # Return the type of a register specified by the architecture. Only
465 # the register cache should call this function directly; others should
466 # use "register_type".
467 M:struct type *:register_type:int reg_nr:reg_nr
469 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
470 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
471 # Implement 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 v:int:call_dummy_location::::AT_ENTRY_POINT::0
478 M:CORE_ADDR:push_dummy_code:CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache:sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache
480 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
481 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
482 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
483 # MAP a GDB RAW register number onto a simulator register number. See
484 # also include/...-sim.h.
485 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
486 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
487 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
488 # setjmp/longjmp support.
489 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
491 v:int:believe_pcc_promotion:::::::
493 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
494 f:int:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep:frame, regnum, type, buf, optimizedp, unavailablep:0
495 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
496 # Construct a value representing the contents of register REGNUM in
497 # frame FRAME, interpreted as type TYPE. The routine needs to
498 # allocate and return a struct value with all value attributes
499 # (but not the value contents) filled in.
500 f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
502 m:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
503 m:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
504 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
506 # Return the return-value convention that will be used by FUNCTION
507 # to return a value of type VALTYPE. FUNCTION may be NULL in which
508 # case the return convention is computed based only on VALTYPE.
510 # If READBUF is not NULL, extract the return value and save it in this buffer.
512 # If WRITEBUF is not NULL, it contains a return value which will be
513 # stored into the appropriate register. This can be used when we want
514 # to force the value returned by a function (see the "return" command
516 M:enum return_value_convention:return_value:struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:function, valtype, regcache, readbuf, writebuf
518 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
519 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
520 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
521 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
522 # Return the adjusted address and kind to use for Z0/Z1 packets.
523 # KIND is usually the memory length of the breakpoint, but may have a
524 # different target-specific meaning.
525 m:void:remote_breakpoint_from_pc:CORE_ADDR *pcptr, int *kindptr:pcptr, kindptr:0:default_remote_breakpoint_from_pc::0
526 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
527 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
528 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
529 v:CORE_ADDR:decr_pc_after_break:::0:::0
531 # A function can be addressed by either it's "pointer" (possibly a
532 # descriptor address) or "entry point" (first executable instruction).
533 # The method "convert_from_func_ptr_addr" converting the former to the
534 # latter. gdbarch_deprecated_function_start_offset is being used to implement
535 # a simplified subset of that functionality - the function's address
536 # corresponds to the "function pointer" and the function's start
537 # corresponds to the "function entry point" - and hence is redundant.
539 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
541 # Return the remote protocol register number associated with this
542 # register. Normally the identity mapping.
543 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
545 # Fetch the target specific address used to represent a load module.
546 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
548 v:CORE_ADDR:frame_args_skip:::0:::0
549 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
550 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
551 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
552 # frame-base. Enable frame-base before frame-unwind.
553 F:int:frame_num_args:struct frame_info *frame:frame
555 M:CORE_ADDR:frame_align:CORE_ADDR address:address
556 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
557 v:int:frame_red_zone_size
559 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
560 # On some machines there are bits in addresses which are not really
561 # part of the address, but are used by the kernel, the hardware, etc.
562 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
563 # we get a "real" address such as one would find in a symbol table.
564 # This is used only for addresses of instructions, and even then I'm
565 # not sure it's used in all contexts. It exists to deal with there
566 # being a few stray bits in the PC which would mislead us, not as some
567 # sort of generic thing to handle alignment or segmentation (it's
568 # possible it should be in TARGET_READ_PC instead).
569 m:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
570 # It is not at all clear why gdbarch_smash_text_address is not folded into
571 # gdbarch_addr_bits_remove.
572 m:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
574 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
575 # indicates if the target needs software single step. An ISA method to
578 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
579 # breakpoints using the breakpoint system instead of blatting memory directly
582 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
583 # target can single step. If not, then implement single step using breakpoints.
585 # A return value of 1 means that the software_single_step breakpoints
586 # were inserted; 0 means they were not.
587 F:int:software_single_step:struct frame_info *frame:frame
589 # Return non-zero if the processor is executing a delay slot and a
590 # further single-step is needed before the instruction finishes.
591 M:int:single_step_through_delay:struct frame_info *frame:frame
592 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
593 # disassembler. Perhaps objdump can handle it?
594 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
595 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
598 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
599 # evaluates non-zero, this is the address where the debugger will place
600 # a step-resume breakpoint to get us past the dynamic linker.
601 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
602 # Some systems also have trampoline code for returning from shared libs.
603 m:int:in_solib_return_trampoline:CORE_ADDR pc, const char *name:pc, name::generic_in_solib_return_trampoline::0
605 # A target might have problems with watchpoints as soon as the stack
606 # frame of the current function has been destroyed. This mostly happens
607 # as the first action in a funtion's epilogue. in_function_epilogue_p()
608 # is defined to return a non-zero value if either the given addr is one
609 # instruction after the stack destroying instruction up to the trailing
610 # return instruction or if we can figure out that the stack frame has
611 # already been invalidated regardless of the value of addr. Targets
612 # which don't suffer from that problem could just let this functionality
614 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
615 f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
616 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
617 v:int:cannot_step_breakpoint:::0:0::0
618 v:int:have_nonsteppable_watchpoint:::0:0::0
619 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
620 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
621 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
622 # Is a register in a group
623 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
624 # Fetch the pointer to the ith function argument.
625 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
627 # Return the appropriate register set for a core file section with
628 # name SECT_NAME and size SECT_SIZE.
629 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
631 # Supported register notes in a core file.
632 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
634 # Create core file notes
635 M:char *:make_corefile_notes:bfd *obfd, int *note_size:obfd, note_size
637 # Find core file memory regions
638 M:int:find_memory_regions:find_memory_region_ftype func, void *data:func, data
640 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
641 # core file into buffer READBUF with length LEN.
642 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
644 # How the core target converts a PTID from a core file to a string.
645 M:char *:core_pid_to_str:ptid_t ptid:ptid
647 # BFD target to use when generating a core file.
648 V:const char *:gcore_bfd_target:::0:0:::pstring (gdbarch->gcore_bfd_target)
650 # If the elements of C++ vtables are in-place function descriptors rather
651 # than normal function pointers (which may point to code or a descriptor),
653 v:int:vtable_function_descriptors:::0:0::0
655 # Set if the least significant bit of the delta is used instead of the least
656 # significant bit of the pfn for pointers to virtual member functions.
657 v:int:vbit_in_delta:::0:0::0
659 # Advance PC to next instruction in order to skip a permanent breakpoint.
660 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
662 # The maximum length of an instruction on this architecture in bytes.
663 V:ULONGEST:max_insn_length:::0:0
665 # Copy the instruction at FROM to TO, and make any adjustments
666 # necessary to single-step it at that address.
668 # REGS holds the state the thread's registers will have before
669 # executing the copied instruction; the PC in REGS will refer to FROM,
670 # not the copy at TO. The caller should update it to point at TO later.
672 # Return a pointer to data of the architecture's choice to be passed
673 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
674 # the instruction's effects have been completely simulated, with the
675 # resulting state written back to REGS.
677 # For a general explanation of displaced stepping and how GDB uses it,
678 # see the comments in infrun.c.
680 # The TO area is only guaranteed to have space for
681 # gdbarch_max_insn_length (arch) bytes, so this function must not
682 # write more bytes than that to that area.
684 # If you do not provide this function, GDB assumes that the
685 # architecture does not support displaced stepping.
687 # If your architecture doesn't need to adjust instructions before
688 # single-stepping them, consider using simple_displaced_step_copy_insn
690 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
692 # Return true if GDB should use hardware single-stepping to execute
693 # the displaced instruction identified by CLOSURE. If false,
694 # GDB will simply restart execution at the displaced instruction
695 # location, and it is up to the target to ensure GDB will receive
696 # control again (e.g. by placing a software breakpoint instruction
697 # into the displaced instruction buffer).
699 # The default implementation returns false on all targets that
700 # provide a gdbarch_software_single_step routine, and true otherwise.
701 m:int:displaced_step_hw_singlestep:struct displaced_step_closure *closure:closure::default_displaced_step_hw_singlestep::0
703 # Fix up the state resulting from successfully single-stepping a
704 # displaced instruction, to give the result we would have gotten from
705 # stepping the instruction in its original location.
707 # REGS is the register state resulting from single-stepping the
708 # displaced instruction.
710 # CLOSURE is the result from the matching call to
711 # gdbarch_displaced_step_copy_insn.
713 # If you provide gdbarch_displaced_step_copy_insn.but not this
714 # function, then GDB assumes that no fixup is needed after
715 # single-stepping the instruction.
717 # For a general explanation of displaced stepping and how GDB uses it,
718 # see the comments in infrun.c.
719 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
721 # Free a closure returned by gdbarch_displaced_step_copy_insn.
723 # If you provide gdbarch_displaced_step_copy_insn, you must provide
724 # this function as well.
726 # If your architecture uses closures that don't need to be freed, then
727 # you can use simple_displaced_step_free_closure here.
729 # For a general explanation of displaced stepping and how GDB uses it,
730 # see the comments in infrun.c.
731 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
733 # Return the address of an appropriate place to put displaced
734 # instructions while we step over them. There need only be one such
735 # place, since we're only stepping one thread over a breakpoint at a
738 # For a general explanation of displaced stepping and how GDB uses it,
739 # see the comments in infrun.c.
740 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
742 # Relocate an instruction to execute at a different address. OLDLOC
743 # is the address in the inferior memory where the instruction to
744 # relocate is currently at. On input, TO points to the destination
745 # where we want the instruction to be copied (and possibly adjusted)
746 # to. On output, it points to one past the end of the resulting
747 # instruction(s). The effect of executing the instruction at TO shall
748 # be the same as if executing it at FROM. For example, call
749 # instructions that implicitly push the return address on the stack
750 # should be adjusted to return to the instruction after OLDLOC;
751 # relative branches, and other PC-relative instructions need the
752 # offset adjusted; etc.
753 M:void:relocate_instruction:CORE_ADDR *to, CORE_ADDR from:to, from::NULL
755 # Refresh overlay mapped state for section OSECT.
756 F:void:overlay_update:struct obj_section *osect:osect
758 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
760 # Handle special encoding of static variables in stabs debug info.
761 F:const char *:static_transform_name:const char *name:name
762 # Set if the address in N_SO or N_FUN stabs may be zero.
763 v:int:sofun_address_maybe_missing:::0:0::0
765 # Parse the instruction at ADDR storing in the record execution log
766 # the registers REGCACHE and memory ranges that will be affected when
767 # the instruction executes, along with their current values.
768 # Return -1 if something goes wrong, 0 otherwise.
769 M:int:process_record:struct regcache *regcache, CORE_ADDR addr:regcache, addr
771 # Save process state after a signal.
772 # Return -1 if something goes wrong, 0 otherwise.
773 M:int:process_record_signal:struct regcache *regcache, enum gdb_signal signal:regcache, signal
775 # Signal translation: translate inferior's signal (host's) number into
776 # GDB's representation.
777 m:enum gdb_signal:gdb_signal_from_host:int signo:signo::default_gdb_signal_from_host::0
779 # Extra signal info inspection.
781 # Return a type suitable to inspect extra signal information.
782 M:struct type *:get_siginfo_type:void:
784 # Record architecture-specific information from the symbol table.
785 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
787 # Function for the 'catch syscall' feature.
789 # Get architecture-specific system calls information from registers.
790 M:LONGEST:get_syscall_number:ptid_t ptid:ptid
792 # SystemTap related fields and functions.
794 # Prefix used to mark an integer constant on the architecture's assembly
795 # For example, on x86 integer constants are written as:
797 # \$10 ;; integer constant 10
799 # in this case, this prefix would be the character \`\$\'.
800 v:const char *:stap_integer_prefix:::0:0::0:gdbarch->stap_integer_prefix
802 # Suffix used to mark an integer constant on the architecture's assembly.
803 v:const char *:stap_integer_suffix:::0:0::0:gdbarch->stap_integer_suffix
805 # Prefix used to mark a register name on the architecture's assembly.
806 # For example, on x86 the register name is written as:
808 # \%eax ;; register eax
810 # in this case, this prefix would be the character \`\%\'.
811 v:const char *:stap_register_prefix:::0:0::0:gdbarch->stap_register_prefix
813 # Suffix used to mark a register name on the architecture's assembly
814 v:const char *:stap_register_suffix:::0:0::0:gdbarch->stap_register_suffix
816 # Prefix used to mark a register indirection on the architecture's assembly.
817 # For example, on x86 the register indirection is written as:
819 # \(\%eax\) ;; indirecting eax
821 # in this case, this prefix would be the charater \`\(\'.
823 # Please note that we use the indirection prefix also for register
824 # displacement, e.g., \`4\(\%eax\)\' on x86.
825 v:const char *:stap_register_indirection_prefix:::0:0::0:gdbarch->stap_register_indirection_prefix
827 # Suffix used to mark a register indirection on the architecture's assembly.
828 # For example, on x86 the register indirection is written as:
830 # \(\%eax\) ;; indirecting eax
832 # in this case, this prefix would be the charater \`\)\'.
834 # Please note that we use the indirection suffix also for register
835 # displacement, e.g., \`4\(\%eax\)\' on x86.
836 v:const char *:stap_register_indirection_suffix:::0:0::0:gdbarch->stap_register_indirection_suffix
838 # Prefix used to name a register using GDB's nomenclature.
840 # For example, on PPC a register is represented by a number in the assembly
841 # language (e.g., \`10\' is the 10th general-purpose register). However,
842 # inside GDB this same register has an \`r\' appended to its name, so the 10th
843 # register would be represented as \`r10\' internally.
844 v:const char *:stap_gdb_register_prefix:::0:0::0:gdbarch->stap_gdb_register_prefix
846 # Suffix used to name a register using GDB's nomenclature.
847 v:const char *:stap_gdb_register_suffix:::0:0::0:gdbarch->stap_gdb_register_suffix
849 # Check if S is a single operand.
851 # Single operands can be:
852 # \- Literal integers, e.g. \`\$10\' on x86
853 # \- Register access, e.g. \`\%eax\' on x86
854 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
855 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
857 # This function should check for these patterns on the string
858 # and return 1 if some were found, or zero otherwise. Please try to match
859 # as much info as you can from the string, i.e., if you have to match
860 # something like \`\(\%\', do not match just the \`\(\'.
861 M:int:stap_is_single_operand:const char *s:s
863 # Function used to handle a "special case" in the parser.
865 # A "special case" is considered to be an unknown token, i.e., a token
866 # that the parser does not know how to parse. A good example of special
867 # case would be ARM's register displacement syntax:
869 # [R0, #4] ;; displacing R0 by 4
871 # Since the parser assumes that a register displacement is of the form:
873 # <number> <indirection_prefix> <register_name> <indirection_suffix>
875 # it means that it will not be able to recognize and parse this odd syntax.
876 # Therefore, we should add a special case function that will handle this token.
878 # This function should generate the proper expression form of the expression
879 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
880 # and so on). It should also return 1 if the parsing was successful, or zero
881 # if the token was not recognized as a special token (in this case, returning
882 # zero means that the special parser is deferring the parsing to the generic
883 # parser), and should advance the buffer pointer (p->arg).
884 M:int:stap_parse_special_token:struct stap_parse_info *p:p
887 # True if the list of shared libraries is one and only for all
888 # processes, as opposed to a list of shared libraries per inferior.
889 # This usually means that all processes, although may or may not share
890 # an address space, will see the same set of symbols at the same
892 v:int:has_global_solist:::0:0::0
894 # On some targets, even though each inferior has its own private
895 # address space, the debug interface takes care of making breakpoints
896 # visible to all address spaces automatically. For such cases,
897 # this property should be set to true.
898 v:int:has_global_breakpoints:::0:0::0
900 # True if inferiors share an address space (e.g., uClinux).
901 m:int:has_shared_address_space:void:::default_has_shared_address_space::0
903 # True if a fast tracepoint can be set at an address.
904 m:int:fast_tracepoint_valid_at:CORE_ADDR addr, int *isize, char **msg:addr, isize, msg::default_fast_tracepoint_valid_at::0
906 # Return the "auto" target charset.
907 f:const char *:auto_charset:void::default_auto_charset:default_auto_charset::0
908 # Return the "auto" target wide charset.
909 f:const char *:auto_wide_charset:void::default_auto_wide_charset:default_auto_wide_charset::0
911 # If non-empty, this is a file extension that will be opened in place
912 # of the file extension reported by the shared library list.
914 # This is most useful for toolchains that use a post-linker tool,
915 # where the names of the files run on the target differ in extension
916 # compared to the names of the files GDB should load for debug info.
917 v:const char *:solib_symbols_extension:::::::pstring (gdbarch->solib_symbols_extension)
919 # If true, the target OS has DOS-based file system semantics. That
920 # is, absolute paths include a drive name, and the backslash is
921 # considered a directory separator.
922 v:int:has_dos_based_file_system:::0:0::0
924 # Generate bytecodes to collect the return address in a frame.
925 # Since the bytecodes run on the target, possibly with GDB not even
926 # connected, the full unwinding machinery is not available, and
927 # typically this function will issue bytecodes for one or more likely
928 # places that the return address may be found.
929 m:void:gen_return_address:struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope:ax, value, scope::default_gen_return_address::0
931 # Implement the "info proc" command.
932 M:void:info_proc:char *args, enum info_proc_what what:args, what
940 exec > new-gdbarch.log
941 function_list | while do_read
944 ${class} ${returntype} ${function} ($formal)
948 eval echo \"\ \ \ \ ${r}=\${${r}}\"
950 if class_is_predicate_p && fallback_default_p
952 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
956 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
958 echo "Error: postdefault is useless when invalid_p=0" 1>&2
962 if class_is_multiarch_p
964 if class_is_predicate_p ; then :
965 elif test "x${predefault}" = "x"
967 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
976 compare_new gdbarch.log
982 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
984 /* Dynamic architecture support for GDB, the GNU debugger.
986 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
987 2007, 2008, 2009 Free Software Foundation, Inc.
989 This file is part of GDB.
991 This program is free software; you can redistribute it and/or modify
992 it under the terms of the GNU General Public License as published by
993 the Free Software Foundation; either version 3 of the License, or
994 (at your option) any later version.
996 This program is distributed in the hope that it will be useful,
997 but WITHOUT ANY WARRANTY; without even the implied warranty of
998 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
999 GNU General Public License for more details.
1001 You should have received a copy of the GNU General Public License
1002 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1004 /* This file was created with the aid of \`\`gdbarch.sh''.
1006 The Bourne shell script \`\`gdbarch.sh'' creates the files
1007 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1008 against the existing \`\`gdbarch.[hc]''. Any differences found
1011 If editing this file, please also run gdbarch.sh and merge any
1012 changes into that script. Conversely, when making sweeping changes
1013 to this file, modifying gdbarch.sh and using its output may prove
1023 exec > new-gdbarch.h
1035 struct minimal_symbol;
1039 struct disassemble_info;
1042 struct bp_target_info;
1044 struct displaced_step_closure;
1045 struct core_regset_section;
1049 struct stap_parse_info;
1051 /* The architecture associated with the connection to the target.
1053 The architecture vector provides some information that is really
1054 a property of the target: The layout of certain packets, for instance;
1055 or the solib_ops vector. Etc. To differentiate architecture accesses
1056 to per-target properties from per-thread/per-frame/per-objfile properties,
1057 accesses to per-target properties should be made through target_gdbarch.
1059 Eventually, when support for multiple targets is implemented in
1060 GDB, this global should be made target-specific. */
1061 extern struct gdbarch *target_gdbarch;
1064 # function typedef's
1067 printf "/* The following are pre-initialized by GDBARCH. */\n"
1068 function_list | while do_read
1073 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1074 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
1078 # function typedef's
1081 printf "/* The following are initialized by the target dependent code. */\n"
1082 function_list | while do_read
1084 if [ -n "${comment}" ]
1086 echo "${comment}" | sed \
1092 if class_is_predicate_p
1095 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
1097 if class_is_variable_p
1100 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1101 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
1103 if class_is_function_p
1106 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1108 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
1109 elif class_is_multiarch_p
1111 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
1113 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
1115 if [ "x${formal}" = "xvoid" ]
1117 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1119 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
1121 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
1128 /* Definition for an unknown syscall, used basically in error-cases. */
1129 #define UNKNOWN_SYSCALL (-1)
1131 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1134 /* Mechanism for co-ordinating the selection of a specific
1137 GDB targets (*-tdep.c) can register an interest in a specific
1138 architecture. Other GDB components can register a need to maintain
1139 per-architecture data.
1141 The mechanisms below ensures that there is only a loose connection
1142 between the set-architecture command and the various GDB
1143 components. Each component can independently register their need
1144 to maintain architecture specific data with gdbarch.
1148 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1151 The more traditional mega-struct containing architecture specific
1152 data for all the various GDB components was also considered. Since
1153 GDB is built from a variable number of (fairly independent)
1154 components it was determined that the global aproach was not
1158 /* Register a new architectural family with GDB.
1160 Register support for the specified ARCHITECTURE with GDB. When
1161 gdbarch determines that the specified architecture has been
1162 selected, the corresponding INIT function is called.
1166 The INIT function takes two parameters: INFO which contains the
1167 information available to gdbarch about the (possibly new)
1168 architecture; ARCHES which is a list of the previously created
1169 \`\`struct gdbarch'' for this architecture.
1171 The INFO parameter is, as far as possible, be pre-initialized with
1172 information obtained from INFO.ABFD or the global defaults.
1174 The ARCHES parameter is a linked list (sorted most recently used)
1175 of all the previously created architures for this architecture
1176 family. The (possibly NULL) ARCHES->gdbarch can used to access
1177 values from the previously selected architecture for this
1178 architecture family.
1180 The INIT function shall return any of: NULL - indicating that it
1181 doesn't recognize the selected architecture; an existing \`\`struct
1182 gdbarch'' from the ARCHES list - indicating that the new
1183 architecture is just a synonym for an earlier architecture (see
1184 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1185 - that describes the selected architecture (see gdbarch_alloc()).
1187 The DUMP_TDEP function shall print out all target specific values.
1188 Care should be taken to ensure that the function works in both the
1189 multi-arch and non- multi-arch cases. */
1193 struct gdbarch *gdbarch;
1194 struct gdbarch_list *next;
1199 /* Use default: NULL (ZERO). */
1200 const struct bfd_arch_info *bfd_arch_info;
1202 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1205 int byte_order_for_code;
1207 /* Use default: NULL (ZERO). */
1210 /* Use default: NULL (ZERO). */
1211 struct gdbarch_tdep_info *tdep_info;
1213 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1214 enum gdb_osabi osabi;
1216 /* Use default: NULL (ZERO). */
1217 const struct target_desc *target_desc;
1220 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1221 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1223 /* DEPRECATED - use gdbarch_register() */
1224 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1226 extern void gdbarch_register (enum bfd_architecture architecture,
1227 gdbarch_init_ftype *,
1228 gdbarch_dump_tdep_ftype *);
1231 /* Return a freshly allocated, NULL terminated, array of the valid
1232 architecture names. Since architectures are registered during the
1233 _initialize phase this function only returns useful information
1234 once initialization has been completed. */
1236 extern const char **gdbarch_printable_names (void);
1239 /* Helper function. Search the list of ARCHES for a GDBARCH that
1240 matches the information provided by INFO. */
1242 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1245 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1246 basic initialization using values obtained from the INFO and TDEP
1247 parameters. set_gdbarch_*() functions are called to complete the
1248 initialization of the object. */
1250 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1253 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1254 It is assumed that the caller freeds the \`\`struct
1257 extern void gdbarch_free (struct gdbarch *);
1260 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1261 obstack. The memory is freed when the corresponding architecture
1264 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1265 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1266 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1269 /* Helper function. Force an update of the current architecture.
1271 The actual architecture selected is determined by INFO, \`\`(gdb) set
1272 architecture'' et.al., the existing architecture and BFD's default
1273 architecture. INFO should be initialized to zero and then selected
1274 fields should be updated.
1276 Returns non-zero if the update succeeds. */
1278 extern int gdbarch_update_p (struct gdbarch_info info);
1281 /* Helper function. Find an architecture matching info.
1283 INFO should be initialized using gdbarch_info_init, relevant fields
1284 set, and then finished using gdbarch_info_fill.
1286 Returns the corresponding architecture, or NULL if no matching
1287 architecture was found. */
1289 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1292 /* Helper function. Set the global "target_gdbarch" to "gdbarch".
1294 FIXME: kettenis/20031124: Of the functions that follow, only
1295 gdbarch_from_bfd is supposed to survive. The others will
1296 dissappear since in the future GDB will (hopefully) be truly
1297 multi-arch. However, for now we're still stuck with the concept of
1298 a single active architecture. */
1300 extern void deprecated_target_gdbarch_select_hack (struct gdbarch *gdbarch);
1303 /* Register per-architecture data-pointer.
1305 Reserve space for a per-architecture data-pointer. An identifier
1306 for the reserved data-pointer is returned. That identifer should
1307 be saved in a local static variable.
1309 Memory for the per-architecture data shall be allocated using
1310 gdbarch_obstack_zalloc. That memory will be deleted when the
1311 corresponding architecture object is deleted.
1313 When a previously created architecture is re-selected, the
1314 per-architecture data-pointer for that previous architecture is
1315 restored. INIT() is not re-called.
1317 Multiple registrarants for any architecture are allowed (and
1318 strongly encouraged). */
1320 struct gdbarch_data;
1322 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1323 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1324 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1325 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1326 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1327 struct gdbarch_data *data,
1330 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1333 /* Set the dynamic target-system-dependent parameters (architecture,
1334 byte-order, ...) using information found in the BFD. */
1336 extern void set_gdbarch_from_file (bfd *);
1339 /* Initialize the current architecture to the "first" one we find on
1342 extern void initialize_current_architecture (void);
1344 /* gdbarch trace variable */
1345 extern int gdbarch_debug;
1347 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1352 #../move-if-change new-gdbarch.h gdbarch.h
1353 compare_new gdbarch.h
1360 exec > new-gdbarch.c
1365 #include "arch-utils.h"
1368 #include "inferior.h"
1371 #include "floatformat.h"
1373 #include "gdb_assert.h"
1374 #include "gdb_string.h"
1375 #include "reggroups.h"
1377 #include "gdb_obstack.h"
1378 #include "observer.h"
1379 #include "regcache.h"
1381 /* Static function declarations */
1383 static void alloc_gdbarch_data (struct gdbarch *);
1385 /* Non-zero if we want to trace architecture code. */
1387 #ifndef GDBARCH_DEBUG
1388 #define GDBARCH_DEBUG 0
1390 int gdbarch_debug = GDBARCH_DEBUG;
1392 show_gdbarch_debug (struct ui_file *file, int from_tty,
1393 struct cmd_list_element *c, const char *value)
1395 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1399 pformat (const struct floatformat **format)
1404 /* Just print out one of them - this is only for diagnostics. */
1405 return format[0]->name;
1409 pstring (const char *string)
1418 # gdbarch open the gdbarch object
1420 printf "/* Maintain the struct gdbarch object. */\n"
1422 printf "struct gdbarch\n"
1424 printf " /* Has this architecture been fully initialized? */\n"
1425 printf " int initialized_p;\n"
1427 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1428 printf " struct obstack *obstack;\n"
1430 printf " /* basic architectural information. */\n"
1431 function_list | while do_read
1435 printf " ${returntype} ${function};\n"
1439 printf " /* target specific vector. */\n"
1440 printf " struct gdbarch_tdep *tdep;\n"
1441 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1443 printf " /* per-architecture data-pointers. */\n"
1444 printf " unsigned nr_data;\n"
1445 printf " void **data;\n"
1447 printf " /* per-architecture swap-regions. */\n"
1448 printf " struct gdbarch_swap *swap;\n"
1451 /* Multi-arch values.
1453 When extending this structure you must:
1455 Add the field below.
1457 Declare set/get functions and define the corresponding
1460 gdbarch_alloc(): If zero/NULL is not a suitable default,
1461 initialize the new field.
1463 verify_gdbarch(): Confirm that the target updated the field
1466 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1469 \`\`startup_gdbarch()'': Append an initial value to the static
1470 variable (base values on the host's c-type system).
1472 get_gdbarch(): Implement the set/get functions (probably using
1473 the macro's as shortcuts).
1478 function_list | while do_read
1480 if class_is_variable_p
1482 printf " ${returntype} ${function};\n"
1483 elif class_is_function_p
1485 printf " gdbarch_${function}_ftype *${function};\n"
1490 # A pre-initialized vector
1494 /* The default architecture uses host values (for want of a better
1498 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1500 printf "struct gdbarch startup_gdbarch =\n"
1502 printf " 1, /* Always initialized. */\n"
1503 printf " NULL, /* The obstack. */\n"
1504 printf " /* basic architecture information. */\n"
1505 function_list | while do_read
1509 printf " ${staticdefault}, /* ${function} */\n"
1513 /* target specific vector and its dump routine. */
1515 /*per-architecture data-pointers and swap regions. */
1517 /* Multi-arch values */
1519 function_list | while do_read
1521 if class_is_function_p || class_is_variable_p
1523 printf " ${staticdefault}, /* ${function} */\n"
1527 /* startup_gdbarch() */
1530 struct gdbarch *target_gdbarch = &startup_gdbarch;
1533 # Create a new gdbarch struct
1536 /* Create a new \`\`struct gdbarch'' based on information provided by
1537 \`\`struct gdbarch_info''. */
1542 gdbarch_alloc (const struct gdbarch_info *info,
1543 struct gdbarch_tdep *tdep)
1545 struct gdbarch *gdbarch;
1547 /* Create an obstack for allocating all the per-architecture memory,
1548 then use that to allocate the architecture vector. */
1549 struct obstack *obstack = XMALLOC (struct obstack);
1550 obstack_init (obstack);
1551 gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1552 memset (gdbarch, 0, sizeof (*gdbarch));
1553 gdbarch->obstack = obstack;
1555 alloc_gdbarch_data (gdbarch);
1557 gdbarch->tdep = tdep;
1560 function_list | while do_read
1564 printf " gdbarch->${function} = info->${function};\n"
1568 printf " /* Force the explicit initialization of these. */\n"
1569 function_list | while do_read
1571 if class_is_function_p || class_is_variable_p
1573 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1575 printf " gdbarch->${function} = ${predefault};\n"
1580 /* gdbarch_alloc() */
1586 # Free a gdbarch struct.
1590 /* Allocate extra space using the per-architecture obstack. */
1593 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1595 void *data = obstack_alloc (arch->obstack, size);
1597 memset (data, 0, size);
1602 /* Free a gdbarch struct. This should never happen in normal
1603 operation --- once you've created a gdbarch, you keep it around.
1604 However, if an architecture's init function encounters an error
1605 building the structure, it may need to clean up a partially
1606 constructed gdbarch. */
1609 gdbarch_free (struct gdbarch *arch)
1611 struct obstack *obstack;
1613 gdb_assert (arch != NULL);
1614 gdb_assert (!arch->initialized_p);
1615 obstack = arch->obstack;
1616 obstack_free (obstack, 0); /* Includes the ARCH. */
1621 # verify a new architecture
1625 /* Ensure that all values in a GDBARCH are reasonable. */
1628 verify_gdbarch (struct gdbarch *gdbarch)
1630 struct ui_file *log;
1631 struct cleanup *cleanups;
1635 log = mem_fileopen ();
1636 cleanups = make_cleanup_ui_file_delete (log);
1638 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1639 fprintf_unfiltered (log, "\n\tbyte-order");
1640 if (gdbarch->bfd_arch_info == NULL)
1641 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1642 /* Check those that need to be defined for the given multi-arch level. */
1644 function_list | while do_read
1646 if class_is_function_p || class_is_variable_p
1648 if [ "x${invalid_p}" = "x0" ]
1650 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1651 elif class_is_predicate_p
1653 printf " /* Skip verify of ${function}, has predicate. */\n"
1654 # FIXME: See do_read for potential simplification
1655 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1657 printf " if (${invalid_p})\n"
1658 printf " gdbarch->${function} = ${postdefault};\n"
1659 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1661 printf " if (gdbarch->${function} == ${predefault})\n"
1662 printf " gdbarch->${function} = ${postdefault};\n"
1663 elif [ -n "${postdefault}" ]
1665 printf " if (gdbarch->${function} == 0)\n"
1666 printf " gdbarch->${function} = ${postdefault};\n"
1667 elif [ -n "${invalid_p}" ]
1669 printf " if (${invalid_p})\n"
1670 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1671 elif [ -n "${predefault}" ]
1673 printf " if (gdbarch->${function} == ${predefault})\n"
1674 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1679 buf = ui_file_xstrdup (log, &length);
1680 make_cleanup (xfree, buf);
1682 internal_error (__FILE__, __LINE__,
1683 _("verify_gdbarch: the following are invalid ...%s"),
1685 do_cleanups (cleanups);
1689 # dump the structure
1693 /* Print out the details of the current architecture. */
1696 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1698 const char *gdb_nm_file = "<not-defined>";
1700 #if defined (GDB_NM_FILE)
1701 gdb_nm_file = GDB_NM_FILE;
1703 fprintf_unfiltered (file,
1704 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1707 function_list | sort -t: -k 3 | while do_read
1709 # First the predicate
1710 if class_is_predicate_p
1712 printf " fprintf_unfiltered (file,\n"
1713 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1714 printf " gdbarch_${function}_p (gdbarch));\n"
1716 # Print the corresponding value.
1717 if class_is_function_p
1719 printf " fprintf_unfiltered (file,\n"
1720 printf " \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1721 printf " host_address_to_string (gdbarch->${function}));\n"
1724 case "${print}:${returntype}" in
1727 print="core_addr_to_string_nz (gdbarch->${function})"
1731 print="plongest (gdbarch->${function})"
1737 printf " fprintf_unfiltered (file,\n"
1738 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1739 printf " ${print});\n"
1743 if (gdbarch->dump_tdep != NULL)
1744 gdbarch->dump_tdep (gdbarch, file);
1752 struct gdbarch_tdep *
1753 gdbarch_tdep (struct gdbarch *gdbarch)
1755 if (gdbarch_debug >= 2)
1756 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1757 return gdbarch->tdep;
1761 function_list | while do_read
1763 if class_is_predicate_p
1767 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1769 printf " gdb_assert (gdbarch != NULL);\n"
1770 printf " return ${predicate};\n"
1773 if class_is_function_p
1776 printf "${returntype}\n"
1777 if [ "x${formal}" = "xvoid" ]
1779 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1781 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1784 printf " gdb_assert (gdbarch != NULL);\n"
1785 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1786 if class_is_predicate_p && test -n "${predefault}"
1788 # Allow a call to a function with a predicate.
1789 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1791 printf " if (gdbarch_debug >= 2)\n"
1792 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1793 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1795 if class_is_multiarch_p
1802 if class_is_multiarch_p
1804 params="gdbarch, ${actual}"
1809 if [ "x${returntype}" = "xvoid" ]
1811 printf " gdbarch->${function} (${params});\n"
1813 printf " return gdbarch->${function} (${params});\n"
1818 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1819 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1821 printf " gdbarch->${function} = ${function};\n"
1823 elif class_is_variable_p
1826 printf "${returntype}\n"
1827 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1829 printf " gdb_assert (gdbarch != NULL);\n"
1830 if [ "x${invalid_p}" = "x0" ]
1832 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1833 elif [ -n "${invalid_p}" ]
1835 printf " /* Check variable is valid. */\n"
1836 printf " gdb_assert (!(${invalid_p}));\n"
1837 elif [ -n "${predefault}" ]
1839 printf " /* Check variable changed from pre-default. */\n"
1840 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1842 printf " if (gdbarch_debug >= 2)\n"
1843 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1844 printf " return gdbarch->${function};\n"
1848 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1849 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1851 printf " gdbarch->${function} = ${function};\n"
1853 elif class_is_info_p
1856 printf "${returntype}\n"
1857 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1859 printf " gdb_assert (gdbarch != NULL);\n"
1860 printf " if (gdbarch_debug >= 2)\n"
1861 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1862 printf " return gdbarch->${function};\n"
1867 # All the trailing guff
1871 /* Keep a registry of per-architecture data-pointers required by GDB
1878 gdbarch_data_pre_init_ftype *pre_init;
1879 gdbarch_data_post_init_ftype *post_init;
1882 struct gdbarch_data_registration
1884 struct gdbarch_data *data;
1885 struct gdbarch_data_registration *next;
1888 struct gdbarch_data_registry
1891 struct gdbarch_data_registration *registrations;
1894 struct gdbarch_data_registry gdbarch_data_registry =
1899 static struct gdbarch_data *
1900 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1901 gdbarch_data_post_init_ftype *post_init)
1903 struct gdbarch_data_registration **curr;
1905 /* Append the new registration. */
1906 for (curr = &gdbarch_data_registry.registrations;
1908 curr = &(*curr)->next);
1909 (*curr) = XMALLOC (struct gdbarch_data_registration);
1910 (*curr)->next = NULL;
1911 (*curr)->data = XMALLOC (struct gdbarch_data);
1912 (*curr)->data->index = gdbarch_data_registry.nr++;
1913 (*curr)->data->pre_init = pre_init;
1914 (*curr)->data->post_init = post_init;
1915 (*curr)->data->init_p = 1;
1916 return (*curr)->data;
1919 struct gdbarch_data *
1920 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1922 return gdbarch_data_register (pre_init, NULL);
1925 struct gdbarch_data *
1926 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1928 return gdbarch_data_register (NULL, post_init);
1931 /* Create/delete the gdbarch data vector. */
1934 alloc_gdbarch_data (struct gdbarch *gdbarch)
1936 gdb_assert (gdbarch->data == NULL);
1937 gdbarch->nr_data = gdbarch_data_registry.nr;
1938 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1941 /* Initialize the current value of the specified per-architecture
1945 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1946 struct gdbarch_data *data,
1949 gdb_assert (data->index < gdbarch->nr_data);
1950 gdb_assert (gdbarch->data[data->index] == NULL);
1951 gdb_assert (data->pre_init == NULL);
1952 gdbarch->data[data->index] = pointer;
1955 /* Return the current value of the specified per-architecture
1959 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1961 gdb_assert (data->index < gdbarch->nr_data);
1962 if (gdbarch->data[data->index] == NULL)
1964 /* The data-pointer isn't initialized, call init() to get a
1966 if (data->pre_init != NULL)
1967 /* Mid architecture creation: pass just the obstack, and not
1968 the entire architecture, as that way it isn't possible for
1969 pre-init code to refer to undefined architecture
1971 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1972 else if (gdbarch->initialized_p
1973 && data->post_init != NULL)
1974 /* Post architecture creation: pass the entire architecture
1975 (as all fields are valid), but be careful to also detect
1976 recursive references. */
1978 gdb_assert (data->init_p);
1980 gdbarch->data[data->index] = data->post_init (gdbarch);
1984 /* The architecture initialization hasn't completed - punt -
1985 hope that the caller knows what they are doing. Once
1986 deprecated_set_gdbarch_data has been initialized, this can be
1987 changed to an internal error. */
1989 gdb_assert (gdbarch->data[data->index] != NULL);
1991 return gdbarch->data[data->index];
1995 /* Keep a registry of the architectures known by GDB. */
1997 struct gdbarch_registration
1999 enum bfd_architecture bfd_architecture;
2000 gdbarch_init_ftype *init;
2001 gdbarch_dump_tdep_ftype *dump_tdep;
2002 struct gdbarch_list *arches;
2003 struct gdbarch_registration *next;
2006 static struct gdbarch_registration *gdbarch_registry = NULL;
2009 append_name (const char ***buf, int *nr, const char *name)
2011 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
2017 gdbarch_printable_names (void)
2019 /* Accumulate a list of names based on the registed list of
2022 const char **arches = NULL;
2023 struct gdbarch_registration *rego;
2025 for (rego = gdbarch_registry;
2029 const struct bfd_arch_info *ap;
2030 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2032 internal_error (__FILE__, __LINE__,
2033 _("gdbarch_architecture_names: multi-arch unknown"));
2036 append_name (&arches, &nr_arches, ap->printable_name);
2041 append_name (&arches, &nr_arches, NULL);
2047 gdbarch_register (enum bfd_architecture bfd_architecture,
2048 gdbarch_init_ftype *init,
2049 gdbarch_dump_tdep_ftype *dump_tdep)
2051 struct gdbarch_registration **curr;
2052 const struct bfd_arch_info *bfd_arch_info;
2054 /* Check that BFD recognizes this architecture */
2055 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2056 if (bfd_arch_info == NULL)
2058 internal_error (__FILE__, __LINE__,
2059 _("gdbarch: Attempt to register "
2060 "unknown architecture (%d)"),
2063 /* Check that we haven't seen this architecture before. */
2064 for (curr = &gdbarch_registry;
2066 curr = &(*curr)->next)
2068 if (bfd_architecture == (*curr)->bfd_architecture)
2069 internal_error (__FILE__, __LINE__,
2070 _("gdbarch: Duplicate registration "
2071 "of architecture (%s)"),
2072 bfd_arch_info->printable_name);
2076 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2077 bfd_arch_info->printable_name,
2078 host_address_to_string (init));
2080 (*curr) = XMALLOC (struct gdbarch_registration);
2081 (*curr)->bfd_architecture = bfd_architecture;
2082 (*curr)->init = init;
2083 (*curr)->dump_tdep = dump_tdep;
2084 (*curr)->arches = NULL;
2085 (*curr)->next = NULL;
2089 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2090 gdbarch_init_ftype *init)
2092 gdbarch_register (bfd_architecture, init, NULL);
2096 /* Look for an architecture using gdbarch_info. */
2098 struct gdbarch_list *
2099 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2100 const struct gdbarch_info *info)
2102 for (; arches != NULL; arches = arches->next)
2104 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2106 if (info->byte_order != arches->gdbarch->byte_order)
2108 if (info->osabi != arches->gdbarch->osabi)
2110 if (info->target_desc != arches->gdbarch->target_desc)
2118 /* Find an architecture that matches the specified INFO. Create a new
2119 architecture if needed. Return that new architecture. */
2122 gdbarch_find_by_info (struct gdbarch_info info)
2124 struct gdbarch *new_gdbarch;
2125 struct gdbarch_registration *rego;
2127 /* Fill in missing parts of the INFO struct using a number of
2128 sources: "set ..."; INFOabfd supplied; and the global
2130 gdbarch_info_fill (&info);
2132 /* Must have found some sort of architecture. */
2133 gdb_assert (info.bfd_arch_info != NULL);
2137 fprintf_unfiltered (gdb_stdlog,
2138 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2139 (info.bfd_arch_info != NULL
2140 ? info.bfd_arch_info->printable_name
2142 fprintf_unfiltered (gdb_stdlog,
2143 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2145 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2146 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2148 fprintf_unfiltered (gdb_stdlog,
2149 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2150 info.osabi, gdbarch_osabi_name (info.osabi));
2151 fprintf_unfiltered (gdb_stdlog,
2152 "gdbarch_find_by_info: info.abfd %s\n",
2153 host_address_to_string (info.abfd));
2154 fprintf_unfiltered (gdb_stdlog,
2155 "gdbarch_find_by_info: info.tdep_info %s\n",
2156 host_address_to_string (info.tdep_info));
2159 /* Find the tdep code that knows about this architecture. */
2160 for (rego = gdbarch_registry;
2163 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2168 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2169 "No matching architecture\n");
2173 /* Ask the tdep code for an architecture that matches "info". */
2174 new_gdbarch = rego->init (info, rego->arches);
2176 /* Did the tdep code like it? No. Reject the change and revert to
2177 the old architecture. */
2178 if (new_gdbarch == NULL)
2181 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2182 "Target rejected architecture\n");
2186 /* Is this a pre-existing architecture (as determined by already
2187 being initialized)? Move it to the front of the architecture
2188 list (keeping the list sorted Most Recently Used). */
2189 if (new_gdbarch->initialized_p)
2191 struct gdbarch_list **list;
2192 struct gdbarch_list *this;
2194 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2195 "Previous architecture %s (%s) selected\n",
2196 host_address_to_string (new_gdbarch),
2197 new_gdbarch->bfd_arch_info->printable_name);
2198 /* Find the existing arch in the list. */
2199 for (list = ®o->arches;
2200 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2201 list = &(*list)->next);
2202 /* It had better be in the list of architectures. */
2203 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2206 (*list) = this->next;
2207 /* Insert THIS at the front. */
2208 this->next = rego->arches;
2209 rego->arches = this;
2214 /* It's a new architecture. */
2216 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2217 "New architecture %s (%s) selected\n",
2218 host_address_to_string (new_gdbarch),
2219 new_gdbarch->bfd_arch_info->printable_name);
2221 /* Insert the new architecture into the front of the architecture
2222 list (keep the list sorted Most Recently Used). */
2224 struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2225 this->next = rego->arches;
2226 this->gdbarch = new_gdbarch;
2227 rego->arches = this;
2230 /* Check that the newly installed architecture is valid. Plug in
2231 any post init values. */
2232 new_gdbarch->dump_tdep = rego->dump_tdep;
2233 verify_gdbarch (new_gdbarch);
2234 new_gdbarch->initialized_p = 1;
2237 gdbarch_dump (new_gdbarch, gdb_stdlog);
2242 /* Make the specified architecture current. */
2245 deprecated_target_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2247 gdb_assert (new_gdbarch != NULL);
2248 gdb_assert (new_gdbarch->initialized_p);
2249 target_gdbarch = new_gdbarch;
2250 observer_notify_architecture_changed (new_gdbarch);
2251 registers_changed ();
2254 extern void _initialize_gdbarch (void);
2257 _initialize_gdbarch (void)
2259 add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2260 Set architecture debugging."), _("\\
2261 Show architecture debugging."), _("\\
2262 When non-zero, architecture debugging is enabled."),
2265 &setdebuglist, &showdebuglist);
2271 #../move-if-change new-gdbarch.c gdbarch.c
2272 compare_new gdbarch.c