3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998-2013 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} ${file}" 1>&2
43 # Format of the input table
44 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
50 # On some SH's, 'read' trims leading and trailing whitespace by
51 # default (e.g., bash), while on others (e.g., dash), it doesn't.
52 # Set IFS to empty to disable the trimming everywhere.
53 while IFS
='' read line
55 if test "${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}}\" = \"\
\"
96 m
) staticdefault
="${predefault}" ;;
97 M
) staticdefault
="0" ;;
98 * ) test "${staticdefault}" || staticdefault
=0 ;;
103 case "${invalid_p}" in
105 if test -n "${predefault}"
107 #invalid_p="gdbarch->${function} == ${predefault}"
108 predicate
="gdbarch->${function} != ${predefault}"
109 elif class_is_variable_p
111 predicate
="gdbarch->${function} != 0"
112 elif class_is_function_p
114 predicate
="gdbarch->${function} != NULL"
118 echo "Predicate function ${function} with invalid_p." 1>&2
125 # PREDEFAULT is a valid fallback definition of MEMBER when
126 # multi-arch is not enabled. This ensures that the
127 # default value, when multi-arch is the same as the
128 # default value when not multi-arch. POSTDEFAULT is
129 # always a valid definition of MEMBER as this again
130 # ensures consistency.
132 if [ -n "${postdefault}" ]
134 fallbackdefault
="${postdefault}"
135 elif [ -n "${predefault}" ]
137 fallbackdefault
="${predefault}"
142 #NOT YET: See gdbarch.log for basic verification of
157 fallback_default_p
()
159 [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
160 ||
[ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
163 class_is_variable_p
()
171 class_is_function_p
()
174 *f
* |
*F
* |
*m
* |
*M
* ) true
;;
179 class_is_multiarch_p
()
187 class_is_predicate_p
()
190 *F
* |
*V
* |
*M
* ) true
;;
204 # dump out/verify the doco
214 # F -> function + predicate
215 # hiding a function + predicate to test function validity
218 # V -> variable + predicate
219 # hiding a variable + predicate to test variables validity
221 # hiding something from the ``struct info'' object
222 # m -> multi-arch function
223 # hiding a multi-arch function (parameterised with the architecture)
224 # M -> multi-arch function + predicate
225 # hiding a multi-arch function + predicate to test function validity
229 # For functions, the return type; for variables, the data type
233 # For functions, the member function name; for variables, the
234 # variable name. Member function names are always prefixed with
235 # ``gdbarch_'' for name-space purity.
239 # The formal argument list. It is assumed that the formal
240 # argument list includes the actual name of each list element.
241 # A function with no arguments shall have ``void'' as the
242 # formal argument list.
246 # The list of actual arguments. The arguments specified shall
247 # match the FORMAL list given above. Functions with out
248 # arguments leave this blank.
252 # To help with the GDB startup a static gdbarch object is
253 # created. STATICDEFAULT is the value to insert into that
254 # static gdbarch object. Since this a static object only
255 # simple expressions can be used.
257 # If STATICDEFAULT is empty, zero is used.
261 # An initial value to assign to MEMBER of the freshly
262 # malloc()ed gdbarch object. After initialization, the
263 # freshly malloc()ed object is passed to the target
264 # architecture code for further updates.
266 # If PREDEFAULT is empty, zero is used.
268 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
269 # INVALID_P are specified, PREDEFAULT will be used as the
270 # default for the non- multi-arch target.
272 # A zero PREDEFAULT function will force the fallback to call
275 # Variable declarations can refer to ``gdbarch'' which will
276 # contain the current architecture. Care should be taken.
280 # A value to assign to MEMBER of the new gdbarch object should
281 # the target architecture code fail to change the PREDEFAULT
284 # If POSTDEFAULT is empty, no post update is performed.
286 # If both INVALID_P and POSTDEFAULT are non-empty then
287 # INVALID_P will be used to determine if MEMBER should be
288 # changed to POSTDEFAULT.
290 # If a non-empty POSTDEFAULT and a zero INVALID_P are
291 # specified, POSTDEFAULT will be used as the default for the
292 # non- multi-arch target (regardless of the value of
295 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
297 # Variable declarations can refer to ``gdbarch'' which
298 # will contain the current architecture. Care should be
303 # A predicate equation that validates MEMBER. Non-zero is
304 # returned if the code creating the new architecture failed to
305 # initialize MEMBER or the initialized the member is invalid.
306 # If POSTDEFAULT is non-empty then MEMBER will be updated to
307 # that value. If POSTDEFAULT is empty then internal_error()
310 # If INVALID_P is empty, a check that MEMBER is no longer
311 # equal to PREDEFAULT is used.
313 # The expression ``0'' disables the INVALID_P check making
314 # PREDEFAULT a legitimate value.
316 # See also PREDEFAULT and POSTDEFAULT.
320 # An optional expression that convers MEMBER to a value
321 # suitable for formatting using %s.
323 # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
324 # or plongest (anything else) is used.
326 garbage_at_eol
) : ;;
328 # Catches stray fields.
331 echo "Bad field ${field}"
339 # See below (DOCO) for description of each field
341 i:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (gdbarch)->printable_name
343 i:int:byte_order:::BFD_ENDIAN_BIG
344 i:int:byte_order_for_code:::BFD_ENDIAN_BIG
346 i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
348 i:const struct target_desc *:target_desc:::::::host_address_to_string (gdbarch->target_desc)
350 # The bit byte-order has to do just with numbering of bits in debugging symbols
351 # and such. Conceptually, it's quite separate from byte/word byte order.
352 v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
354 # Number of bits in a char or unsigned char for the target machine.
355 # Just like CHAR_BIT in <limits.h> but describes the target machine.
356 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
358 # Number of bits in a short or unsigned short for the target machine.
359 v:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
360 # Number of bits in an int or unsigned int for the target machine.
361 v:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
362 # Number of bits in a long or unsigned long for the target machine.
363 v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
364 # Number of bits in a long long or unsigned long long for the target
366 v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
367 # Alignment of a long long or unsigned long long for the target
369 v:int:long_long_align_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
371 # The ABI default bit-size and format for "half", "float", "double", and
372 # "long double". These bit/format pairs should eventually be combined
373 # into a single object. For the moment, just initialize them as a pair.
374 # Each format describes both the big and little endian layouts (if
377 v:int:half_bit:::16:2*TARGET_CHAR_BIT::0
378 v:const struct floatformat **:half_format:::::floatformats_ieee_half::pformat (gdbarch->half_format)
379 v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
380 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format)
381 v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
382 v:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (gdbarch->double_format)
383 v:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
384 v:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (gdbarch->long_double_format)
386 # For most targets, a pointer on the target and its representation as an
387 # address in GDB have the same size and "look the same". For such a
388 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
389 # / addr_bit will be set from it.
391 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
392 # also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
393 # gdbarch_address_to_pointer as well.
395 # ptr_bit is the size of a pointer on the target
396 v:int:ptr_bit:::8 * sizeof (void*):gdbarch->int_bit::0
397 # addr_bit is the size of a target address as represented in gdb
398 v:int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (gdbarch):
400 # dwarf2_addr_size is the target address size as used in the Dwarf debug
401 # info. For .debug_frame FDEs, this is supposed to be the target address
402 # size from the associated CU header, and which is equivalent to the
403 # DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
404 # Unfortunately there is no good way to determine this value. Therefore
405 # dwarf2_addr_size simply defaults to the target pointer size.
407 # dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
408 # defined using the target's pointer size so far.
410 # Note that dwarf2_addr_size only needs to be redefined by a target if the
411 # GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
412 # and if Dwarf versions < 4 need to be supported.
413 v:int:dwarf2_addr_size:::sizeof (void*):0:gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT:
415 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
416 v:int:char_signed:::1:-1:1
418 F:CORE_ADDR:read_pc:struct regcache *regcache:regcache
419 F:void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
420 # Function for getting target's idea of a frame pointer. FIXME: GDB's
421 # whole scheme for dealing with "frames" and "frame pointers" needs a
423 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
425 M:enum register_status:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
426 # Read a register into a new struct value. If the register is wholly
427 # or partly unavailable, this should call mark_value_bytes_unavailable
428 # as appropriate. If this is defined, then pseudo_register_read will
430 M:struct value *:pseudo_register_read_value:struct regcache *regcache, int cookednum:regcache, cookednum
431 M:void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
433 v:int:num_regs:::0:-1
434 # This macro gives the number of pseudo-registers that live in the
435 # register namespace but do not get fetched or stored on the target.
436 # These pseudo-registers may be aliases for other registers,
437 # combinations of other registers, or they may be computed by GDB.
438 v:int:num_pseudo_regs:::0:0::0
440 # Assemble agent expression bytecode to collect pseudo-register REG.
441 # Return -1 if something goes wrong, 0 otherwise.
442 M:int:ax_pseudo_register_collect:struct agent_expr *ax, int reg:ax, reg
444 # Assemble agent expression bytecode to push the value of pseudo-register
445 # REG on the interpreter stack.
446 # Return -1 if something goes wrong, 0 otherwise.
447 M:int:ax_pseudo_register_push_stack:struct agent_expr *ax, int reg:ax, reg
449 # GDB's standard (or well known) register numbers. These can map onto
450 # a real register or a pseudo (computed) register or not be defined at
452 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
453 v:int:sp_regnum:::-1:-1::0
454 v:int:pc_regnum:::-1:-1::0
455 v:int:ps_regnum:::-1:-1::0
456 v:int:fp0_regnum:::0:-1::0
457 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
458 m:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
459 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
460 m:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
461 # Convert from an sdb register number to an internal gdb register number.
462 m:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
463 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
464 m:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
465 m:const char *:register_name:int regnr:regnr::0
467 # Return the type of a register specified by the architecture. Only
468 # the register cache should call this function directly; others should
469 # use "register_type".
470 M:struct type *:register_type:int reg_nr:reg_nr
472 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
473 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
474 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
475 # deprecated_fp_regnum.
476 v:int:deprecated_fp_regnum:::-1:-1::0
478 # See gdbint.texinfo. See infcall.c.
479 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
480 v:int:call_dummy_location::::AT_ENTRY_POINT::0
481 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
483 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
484 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
485 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
486 # MAP a GDB RAW register number onto a simulator register number. See
487 # also include/...-sim.h.
488 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
489 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
490 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
491 # setjmp/longjmp support.
492 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
494 v:int:believe_pcc_promotion:::::::
496 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
497 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
498 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
499 # Construct a value representing the contents of register REGNUM in
500 # frame FRAME, interpreted as type TYPE. The routine needs to
501 # allocate and return a struct value with all value attributes
502 # (but not the value contents) filled in.
503 f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
505 m:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
506 m:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
507 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
509 # Return the return-value convention that will be used by FUNCTION
510 # to return a value of type VALTYPE. FUNCTION may be NULL in which
511 # case the return convention is computed based only on VALTYPE.
513 # If READBUF is not NULL, extract the return value and save it in this buffer.
515 # If WRITEBUF is not NULL, it contains a return value which will be
516 # stored into the appropriate register. This can be used when we want
517 # to force the value returned by a function (see the "return" command
519 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
521 # Return true if the return value of function is stored in the first hidden
522 # parameter. In theory, this feature should be language-dependent, specified
523 # by language and its ABI, such as C++. Unfortunately, compiler may
524 # implement it to a target-dependent feature. So that we need such hook here
525 # to be aware of this in GDB.
526 m:int:return_in_first_hidden_param_p:struct type *type:type::default_return_in_first_hidden_param_p::0
528 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
529 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
530 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
531 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
532 # Return the adjusted address and kind to use for Z0/Z1 packets.
533 # KIND is usually the memory length of the breakpoint, but may have a
534 # different target-specific meaning.
535 m:void:remote_breakpoint_from_pc:CORE_ADDR *pcptr, int *kindptr:pcptr, kindptr:0:default_remote_breakpoint_from_pc::0
536 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
537 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
538 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
539 v:CORE_ADDR:decr_pc_after_break:::0:::0
541 # A function can be addressed by either it's "pointer" (possibly a
542 # descriptor address) or "entry point" (first executable instruction).
543 # The method "convert_from_func_ptr_addr" converting the former to the
544 # latter. gdbarch_deprecated_function_start_offset is being used to implement
545 # a simplified subset of that functionality - the function's address
546 # corresponds to the "function pointer" and the function's start
547 # corresponds to the "function entry point" - and hence is redundant.
549 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
551 # Return the remote protocol register number associated with this
552 # register. Normally the identity mapping.
553 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
555 # Fetch the target specific address used to represent a load module.
556 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
558 v:CORE_ADDR:frame_args_skip:::0:::0
559 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
560 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
561 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
562 # frame-base. Enable frame-base before frame-unwind.
563 F:int:frame_num_args:struct frame_info *frame:frame
565 M:CORE_ADDR:frame_align:CORE_ADDR address:address
566 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
567 v:int:frame_red_zone_size
569 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
570 # On some machines there are bits in addresses which are not really
571 # part of the address, but are used by the kernel, the hardware, etc.
572 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
573 # we get a "real" address such as one would find in a symbol table.
574 # This is used only for addresses of instructions, and even then I'm
575 # not sure it's used in all contexts. It exists to deal with there
576 # being a few stray bits in the PC which would mislead us, not as some
577 # sort of generic thing to handle alignment or segmentation (it's
578 # possible it should be in TARGET_READ_PC instead).
579 m:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
581 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
582 # indicates if the target needs software single step. An ISA method to
585 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
586 # breakpoints using the breakpoint system instead of blatting memory directly
589 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
590 # target can single step. If not, then implement single step using breakpoints.
592 # A return value of 1 means that the software_single_step breakpoints
593 # were inserted; 0 means they were not.
594 F:int:software_single_step:struct frame_info *frame:frame
596 # Return non-zero if the processor is executing a delay slot and a
597 # further single-step is needed before the instruction finishes.
598 M:int:single_step_through_delay:struct frame_info *frame:frame
599 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
600 # disassembler. Perhaps objdump can handle it?
601 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
602 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
605 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
606 # evaluates non-zero, this is the address where the debugger will place
607 # a step-resume breakpoint to get us past the dynamic linker.
608 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
609 # Some systems also have trampoline code for returning from shared libs.
610 m:int:in_solib_return_trampoline:CORE_ADDR pc, const char *name:pc, name::generic_in_solib_return_trampoline::0
612 # A target might have problems with watchpoints as soon as the stack
613 # frame of the current function has been destroyed. This mostly happens
614 # as the first action in a funtion's epilogue. in_function_epilogue_p()
615 # is defined to return a non-zero value if either the given addr is one
616 # instruction after the stack destroying instruction up to the trailing
617 # return instruction or if we can figure out that the stack frame has
618 # already been invalidated regardless of the value of addr. Targets
619 # which don't suffer from that problem could just let this functionality
621 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
622 f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
623 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
624 v:int:cannot_step_breakpoint:::0:0::0
625 v:int:have_nonsteppable_watchpoint:::0:0::0
626 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
627 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
628 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
629 # Is a register in a group
630 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
631 # Fetch the pointer to the ith function argument.
632 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
634 # Return the appropriate register set for a core file section with
635 # name SECT_NAME and size SECT_SIZE.
636 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
638 # Supported register notes in a core file.
639 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
641 # Create core file notes
642 M:char *:make_corefile_notes:bfd *obfd, int *note_size:obfd, note_size
644 # The elfcore writer hook to use to write Linux prpsinfo notes to core
645 # files. Most Linux architectures use the same prpsinfo32 or
646 # prpsinfo64 layouts, and so won't need to provide this hook, as we
647 # call the Linux generic routines in bfd to write prpsinfo notes by
649 F:char *:elfcore_write_linux_prpsinfo:bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info:obfd, note_data, note_size, info
651 # Find core file memory regions
652 M:int:find_memory_regions:find_memory_region_ftype func, void *data:func, data
654 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
655 # core file into buffer READBUF with length LEN.
656 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
658 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
659 # libraries list from core file into buffer READBUF with length LEN.
660 M:LONGEST:core_xfer_shared_libraries_aix:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
662 # How the core target converts a PTID from a core file to a string.
663 M:char *:core_pid_to_str:ptid_t ptid:ptid
665 # BFD target to use when generating a core file.
666 V:const char *:gcore_bfd_target:::0:0:::pstring (gdbarch->gcore_bfd_target)
668 # If the elements of C++ vtables are in-place function descriptors rather
669 # than normal function pointers (which may point to code or a descriptor),
671 v:int:vtable_function_descriptors:::0:0::0
673 # Set if the least significant bit of the delta is used instead of the least
674 # significant bit of the pfn for pointers to virtual member functions.
675 v:int:vbit_in_delta:::0:0::0
677 # Advance PC to next instruction in order to skip a permanent breakpoint.
678 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
680 # The maximum length of an instruction on this architecture in bytes.
681 V:ULONGEST:max_insn_length:::0:0
683 # Copy the instruction at FROM to TO, and make any adjustments
684 # necessary to single-step it at that address.
686 # REGS holds the state the thread's registers will have before
687 # executing the copied instruction; the PC in REGS will refer to FROM,
688 # not the copy at TO. The caller should update it to point at TO later.
690 # Return a pointer to data of the architecture's choice to be passed
691 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
692 # the instruction's effects have been completely simulated, with the
693 # resulting state written back to REGS.
695 # For a general explanation of displaced stepping and how GDB uses it,
696 # see the comments in infrun.c.
698 # The TO area is only guaranteed to have space for
699 # gdbarch_max_insn_length (arch) bytes, so this function must not
700 # write more bytes than that to that area.
702 # If you do not provide this function, GDB assumes that the
703 # architecture does not support displaced stepping.
705 # If your architecture doesn't need to adjust instructions before
706 # single-stepping them, consider using simple_displaced_step_copy_insn
708 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
710 # Return true if GDB should use hardware single-stepping to execute
711 # the displaced instruction identified by CLOSURE. If false,
712 # GDB will simply restart execution at the displaced instruction
713 # location, and it is up to the target to ensure GDB will receive
714 # control again (e.g. by placing a software breakpoint instruction
715 # into the displaced instruction buffer).
717 # The default implementation returns false on all targets that
718 # provide a gdbarch_software_single_step routine, and true otherwise.
719 m:int:displaced_step_hw_singlestep:struct displaced_step_closure *closure:closure::default_displaced_step_hw_singlestep::0
721 # Fix up the state resulting from successfully single-stepping a
722 # displaced instruction, to give the result we would have gotten from
723 # stepping the instruction in its original location.
725 # REGS is the register state resulting from single-stepping the
726 # displaced instruction.
728 # CLOSURE is the result from the matching call to
729 # gdbarch_displaced_step_copy_insn.
731 # If you provide gdbarch_displaced_step_copy_insn.but not this
732 # function, then GDB assumes that no fixup is needed after
733 # single-stepping the instruction.
735 # For a general explanation of displaced stepping and how GDB uses it,
736 # see the comments in infrun.c.
737 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
739 # Free a closure returned by gdbarch_displaced_step_copy_insn.
741 # If you provide gdbarch_displaced_step_copy_insn, you must provide
742 # this function as well.
744 # If your architecture uses closures that don't need to be freed, then
745 # you can use simple_displaced_step_free_closure here.
747 # For a general explanation of displaced stepping and how GDB uses it,
748 # see the comments in infrun.c.
749 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
751 # Return the address of an appropriate place to put displaced
752 # instructions while we step over them. There need only be one such
753 # place, since we're only stepping one thread over a breakpoint at a
756 # For a general explanation of displaced stepping and how GDB uses it,
757 # see the comments in infrun.c.
758 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
760 # Relocate an instruction to execute at a different address. OLDLOC
761 # is the address in the inferior memory where the instruction to
762 # relocate is currently at. On input, TO points to the destination
763 # where we want the instruction to be copied (and possibly adjusted)
764 # to. On output, it points to one past the end of the resulting
765 # instruction(s). The effect of executing the instruction at TO shall
766 # be the same as if executing it at FROM. For example, call
767 # instructions that implicitly push the return address on the stack
768 # should be adjusted to return to the instruction after OLDLOC;
769 # relative branches, and other PC-relative instructions need the
770 # offset adjusted; etc.
771 M:void:relocate_instruction:CORE_ADDR *to, CORE_ADDR from:to, from::NULL
773 # Refresh overlay mapped state for section OSECT.
774 F:void:overlay_update:struct obj_section *osect:osect
776 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
778 # Handle special encoding of static variables in stabs debug info.
779 F:const char *:static_transform_name:const char *name:name
780 # Set if the address in N_SO or N_FUN stabs may be zero.
781 v:int:sofun_address_maybe_missing:::0:0::0
783 # Parse the instruction at ADDR storing in the record execution log
784 # the registers REGCACHE and memory ranges that will be affected when
785 # the instruction executes, along with their current values.
786 # Return -1 if something goes wrong, 0 otherwise.
787 M:int:process_record:struct regcache *regcache, CORE_ADDR addr:regcache, addr
789 # Save process state after a signal.
790 # Return -1 if something goes wrong, 0 otherwise.
791 M:int:process_record_signal:struct regcache *regcache, enum gdb_signal signal:regcache, signal
793 # Signal translation: translate inferior's signal (target's) number
794 # into GDB's representation. The implementation of this method must
795 # be host independent. IOW, don't rely on symbols of the NAT_FILE
796 # header (the nm-*.h files), the host <signal.h> header, or similar
797 # headers. This is mainly used when cross-debugging core files ---
798 # "Live" targets hide the translation behind the target interface
799 # (target_wait, target_resume, etc.).
800 M:enum gdb_signal:gdb_signal_from_target:int signo:signo
802 # Signal translation: translate the GDB's internal signal number into
803 # the inferior's signal (target's) representation. The implementation
804 # of this method must be host independent. IOW, don't rely on symbols
805 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
806 # header, or similar headers.
807 # Return the target signal number if found, or -1 if the GDB internal
808 # signal number is invalid.
809 M:int:gdb_signal_to_target:enum gdb_signal signal:signal
811 # Extra signal info inspection.
813 # Return a type suitable to inspect extra signal information.
814 M:struct type *:get_siginfo_type:void:
816 # Record architecture-specific information from the symbol table.
817 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
819 # Function for the 'catch syscall' feature.
821 # Get architecture-specific system calls information from registers.
822 M:LONGEST:get_syscall_number:ptid_t ptid:ptid
824 # SystemTap related fields and functions.
826 # Prefix used to mark an integer constant on the architecture's assembly
827 # For example, on x86 integer constants are written as:
829 # \$10 ;; integer constant 10
831 # in this case, this prefix would be the character \`\$\'.
832 v:const char *:stap_integer_prefix:::0:0::0:pstring (gdbarch->stap_integer_prefix)
834 # Suffix used to mark an integer constant on the architecture's assembly.
835 v:const char *:stap_integer_suffix:::0:0::0:pstring (gdbarch->stap_integer_suffix)
837 # Prefix used to mark a register name on the architecture's assembly.
838 # For example, on x86 the register name is written as:
840 # \%eax ;; register eax
842 # in this case, this prefix would be the character \`\%\'.
843 v:const char *:stap_register_prefix:::0:0::0:pstring (gdbarch->stap_register_prefix)
845 # Suffix used to mark a register name on the architecture's assembly
846 v:const char *:stap_register_suffix:::0:0::0:pstring (gdbarch->stap_register_suffix)
848 # Prefix used to mark a register indirection on the architecture's assembly.
849 # For example, on x86 the register indirection is written as:
851 # \(\%eax\) ;; indirecting eax
853 # in this case, this prefix would be the charater \`\(\'.
855 # Please note that we use the indirection prefix also for register
856 # displacement, e.g., \`4\(\%eax\)\' on x86.
857 v:const char *:stap_register_indirection_prefix:::0:0::0:pstring (gdbarch->stap_register_indirection_prefix)
859 # Suffix used to mark a register indirection on the architecture's assembly.
860 # For example, on x86 the register indirection is written as:
862 # \(\%eax\) ;; indirecting eax
864 # in this case, this prefix would be the charater \`\)\'.
866 # Please note that we use the indirection suffix also for register
867 # displacement, e.g., \`4\(\%eax\)\' on x86.
868 v:const char *:stap_register_indirection_suffix:::0:0::0:pstring (gdbarch->stap_register_indirection_suffix)
870 # Prefix used to name a register using GDB's nomenclature.
872 # For example, on PPC a register is represented by a number in the assembly
873 # language (e.g., \`10\' is the 10th general-purpose register). However,
874 # inside GDB this same register has an \`r\' appended to its name, so the 10th
875 # register would be represented as \`r10\' internally.
876 v:const char *:stap_gdb_register_prefix:::0:0::0:pstring (gdbarch->stap_gdb_register_prefix)
878 # Suffix used to name a register using GDB's nomenclature.
879 v:const char *:stap_gdb_register_suffix:::0:0::0:pstring (gdbarch->stap_gdb_register_suffix)
881 # Check if S is a single operand.
883 # Single operands can be:
884 # \- Literal integers, e.g. \`\$10\' on x86
885 # \- Register access, e.g. \`\%eax\' on x86
886 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
887 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
889 # This function should check for these patterns on the string
890 # and return 1 if some were found, or zero otherwise. Please try to match
891 # as much info as you can from the string, i.e., if you have to match
892 # something like \`\(\%\', do not match just the \`\(\'.
893 M:int:stap_is_single_operand:const char *s:s
895 # Function used to handle a "special case" in the parser.
897 # A "special case" is considered to be an unknown token, i.e., a token
898 # that the parser does not know how to parse. A good example of special
899 # case would be ARM's register displacement syntax:
901 # [R0, #4] ;; displacing R0 by 4
903 # Since the parser assumes that a register displacement is of the form:
905 # <number> <indirection_prefix> <register_name> <indirection_suffix>
907 # it means that it will not be able to recognize and parse this odd syntax.
908 # Therefore, we should add a special case function that will handle this token.
910 # This function should generate the proper expression form of the expression
911 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
912 # and so on). It should also return 1 if the parsing was successful, or zero
913 # if the token was not recognized as a special token (in this case, returning
914 # zero means that the special parser is deferring the parsing to the generic
915 # parser), and should advance the buffer pointer (p->arg).
916 M:int:stap_parse_special_token:struct stap_parse_info *p:p
919 # True if the list of shared libraries is one and only for all
920 # processes, as opposed to a list of shared libraries per inferior.
921 # This usually means that all processes, although may or may not share
922 # an address space, will see the same set of symbols at the same
924 v:int:has_global_solist:::0:0::0
926 # On some targets, even though each inferior has its own private
927 # address space, the debug interface takes care of making breakpoints
928 # visible to all address spaces automatically. For such cases,
929 # this property should be set to true.
930 v:int:has_global_breakpoints:::0:0::0
932 # True if inferiors share an address space (e.g., uClinux).
933 m:int:has_shared_address_space:void:::default_has_shared_address_space::0
935 # True if a fast tracepoint can be set at an address.
936 m:int:fast_tracepoint_valid_at:CORE_ADDR addr, int *isize, char **msg:addr, isize, msg::default_fast_tracepoint_valid_at::0
938 # Return the "auto" target charset.
939 f:const char *:auto_charset:void::default_auto_charset:default_auto_charset::0
940 # Return the "auto" target wide charset.
941 f:const char *:auto_wide_charset:void::default_auto_wide_charset:default_auto_wide_charset::0
943 # If non-empty, this is a file extension that will be opened in place
944 # of the file extension reported by the shared library list.
946 # This is most useful for toolchains that use a post-linker tool,
947 # where the names of the files run on the target differ in extension
948 # compared to the names of the files GDB should load for debug info.
949 v:const char *:solib_symbols_extension:::::::pstring (gdbarch->solib_symbols_extension)
951 # If true, the target OS has DOS-based file system semantics. That
952 # is, absolute paths include a drive name, and the backslash is
953 # considered a directory separator.
954 v:int:has_dos_based_file_system:::0:0::0
956 # Generate bytecodes to collect the return address in a frame.
957 # Since the bytecodes run on the target, possibly with GDB not even
958 # connected, the full unwinding machinery is not available, and
959 # typically this function will issue bytecodes for one or more likely
960 # places that the return address may be found.
961 m:void:gen_return_address:struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope:ax, value, scope::default_gen_return_address::0
963 # Implement the "info proc" command.
964 M:void:info_proc:char *args, enum info_proc_what what:args, what
966 # Implement the "info proc" command for core files. Noe that there
967 # are two "info_proc"-like methods on gdbarch -- one for core files,
968 # one for live targets.
969 M:void:core_info_proc:char *args, enum info_proc_what what:args, what
971 # Iterate over all objfiles in the order that makes the most sense
972 # for the architecture to make global symbol searches.
974 # CB is a callback function where OBJFILE is the objfile to be searched,
975 # and CB_DATA a pointer to user-defined data (the same data that is passed
976 # when calling this gdbarch method). The iteration stops if this function
979 # CB_DATA is a pointer to some user-defined data to be passed to
982 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
983 # inspected when the symbol search was requested.
984 m:void:iterate_over_objfiles_in_search_order:iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile:cb, cb_data, current_objfile:0:default_iterate_over_objfiles_in_search_order::0
986 # Ravenscar arch-dependent ops.
987 v:struct ravenscar_arch_ops *:ravenscar_ops:::NULL:NULL::0:host_address_to_string (gdbarch->ravenscar_ops)
994 exec > new-gdbarch.log
995 function_list |
while do_read
998 ${class} ${returntype} ${function} ($formal)
1002 eval echo \"\ \ \ \
${r}=\
${${r}}\"
1004 if class_is_predicate_p
&& fallback_default_p
1006 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1010 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
1012 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1016 if class_is_multiarch_p
1018 if class_is_predicate_p
; then :
1019 elif test "x${predefault}" = "x"
1021 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1030 compare_new gdbarch.log
1036 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1039 /* Dynamic architecture support for GDB, the GNU debugger.
1041 Copyright (C) 1998-2013 Free Software Foundation, Inc.
1043 This file is part of GDB.
1045 This program is free software; you can redistribute it and/or modify
1046 it under the terms of the GNU General Public License as published by
1047 the Free Software Foundation; either version 3 of the License, or
1048 (at your option) any later version.
1050 This program is distributed in the hope that it will be useful,
1051 but WITHOUT ANY WARRANTY; without even the implied warranty of
1052 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1053 GNU General Public License for more details.
1055 You should have received a copy of the GNU General Public License
1056 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1058 /* This file was created with the aid of \`\`gdbarch.sh''.
1060 The Bourne shell script \`\`gdbarch.sh'' creates the files
1061 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1062 against the existing \`\`gdbarch.[hc]''. Any differences found
1065 If editing this file, please also run gdbarch.sh and merge any
1066 changes into that script. Conversely, when making sweeping changes
1067 to this file, modifying gdbarch.sh and using its output may prove
1077 exec > new-gdbarch.h
1089 struct minimal_symbol;
1093 struct disassemble_info;
1096 struct bp_target_info;
1098 struct displaced_step_closure;
1099 struct core_regset_section;
1103 struct stap_parse_info;
1104 struct ravenscar_arch_ops;
1105 struct elf_internal_linux_prpsinfo;
1107 /* The architecture associated with the inferior through the
1108 connection to the target.
1110 The architecture vector provides some information that is really a
1111 property of the inferior, accessed through a particular target:
1112 ptrace operations; the layout of certain RSP packets; the solib_ops
1113 vector; etc. To differentiate architecture accesses to
1114 per-inferior/target properties from
1115 per-thread/per-frame/per-objfile properties, accesses to
1116 per-inferior/target properties should be made through this
1119 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1120 extern struct gdbarch *target_gdbarch (void);
1122 /* The initial, default architecture. It uses host values (for want of a better
1124 extern struct gdbarch startup_gdbarch;
1127 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1130 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1131 (struct objfile *objfile, void *cb_data);
1134 # function typedef's
1137 printf "/* The following are pre-initialized by GDBARCH. */\n"
1138 function_list |
while do_read
1143 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1144 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
1148 # function typedef's
1151 printf "/* The following are initialized by the target dependent code. */\n"
1152 function_list |
while do_read
1154 if [ -n "${comment}" ]
1156 echo "${comment}" |
sed \
1162 if class_is_predicate_p
1165 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
1167 if class_is_variable_p
1170 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1171 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
1173 if class_is_function_p
1176 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1178 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
1179 elif class_is_multiarch_p
1181 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
1183 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
1185 if [ "x${formal}" = "xvoid" ]
1187 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1189 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
1191 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
1198 /* Definition for an unknown syscall, used basically in error-cases. */
1199 #define UNKNOWN_SYSCALL (-1)
1201 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1204 /* Mechanism for co-ordinating the selection of a specific
1207 GDB targets (*-tdep.c) can register an interest in a specific
1208 architecture. Other GDB components can register a need to maintain
1209 per-architecture data.
1211 The mechanisms below ensures that there is only a loose connection
1212 between the set-architecture command and the various GDB
1213 components. Each component can independently register their need
1214 to maintain architecture specific data with gdbarch.
1218 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1221 The more traditional mega-struct containing architecture specific
1222 data for all the various GDB components was also considered. Since
1223 GDB is built from a variable number of (fairly independent)
1224 components it was determined that the global aproach was not
1228 /* Register a new architectural family with GDB.
1230 Register support for the specified ARCHITECTURE with GDB. When
1231 gdbarch determines that the specified architecture has been
1232 selected, the corresponding INIT function is called.
1236 The INIT function takes two parameters: INFO which contains the
1237 information available to gdbarch about the (possibly new)
1238 architecture; ARCHES which is a list of the previously created
1239 \`\`struct gdbarch'' for this architecture.
1241 The INFO parameter is, as far as possible, be pre-initialized with
1242 information obtained from INFO.ABFD or the global defaults.
1244 The ARCHES parameter is a linked list (sorted most recently used)
1245 of all the previously created architures for this architecture
1246 family. The (possibly NULL) ARCHES->gdbarch can used to access
1247 values from the previously selected architecture for this
1248 architecture family.
1250 The INIT function shall return any of: NULL - indicating that it
1251 doesn't recognize the selected architecture; an existing \`\`struct
1252 gdbarch'' from the ARCHES list - indicating that the new
1253 architecture is just a synonym for an earlier architecture (see
1254 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1255 - that describes the selected architecture (see gdbarch_alloc()).
1257 The DUMP_TDEP function shall print out all target specific values.
1258 Care should be taken to ensure that the function works in both the
1259 multi-arch and non- multi-arch cases. */
1263 struct gdbarch *gdbarch;
1264 struct gdbarch_list *next;
1269 /* Use default: NULL (ZERO). */
1270 const struct bfd_arch_info *bfd_arch_info;
1272 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1275 int byte_order_for_code;
1277 /* Use default: NULL (ZERO). */
1280 /* Use default: NULL (ZERO). */
1281 struct gdbarch_tdep_info *tdep_info;
1283 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1284 enum gdb_osabi osabi;
1286 /* Use default: NULL (ZERO). */
1287 const struct target_desc *target_desc;
1290 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1291 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1293 /* DEPRECATED - use gdbarch_register() */
1294 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1296 extern void gdbarch_register (enum bfd_architecture architecture,
1297 gdbarch_init_ftype *,
1298 gdbarch_dump_tdep_ftype *);
1301 /* Return a freshly allocated, NULL terminated, array of the valid
1302 architecture names. Since architectures are registered during the
1303 _initialize phase this function only returns useful information
1304 once initialization has been completed. */
1306 extern const char **gdbarch_printable_names (void);
1309 /* Helper function. Search the list of ARCHES for a GDBARCH that
1310 matches the information provided by INFO. */
1312 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1315 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1316 basic initialization using values obtained from the INFO and TDEP
1317 parameters. set_gdbarch_*() functions are called to complete the
1318 initialization of the object. */
1320 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1323 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1324 It is assumed that the caller freeds the \`\`struct
1327 extern void gdbarch_free (struct gdbarch *);
1330 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1331 obstack. The memory is freed when the corresponding architecture
1334 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1335 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1336 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1339 /* Helper function. Force an update of the current architecture.
1341 The actual architecture selected is determined by INFO, \`\`(gdb) set
1342 architecture'' et.al., the existing architecture and BFD's default
1343 architecture. INFO should be initialized to zero and then selected
1344 fields should be updated.
1346 Returns non-zero if the update succeeds. */
1348 extern int gdbarch_update_p (struct gdbarch_info info);
1351 /* Helper function. Find an architecture matching info.
1353 INFO should be initialized using gdbarch_info_init, relevant fields
1354 set, and then finished using gdbarch_info_fill.
1356 Returns the corresponding architecture, or NULL if no matching
1357 architecture was found. */
1359 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1362 /* Helper function. Set the target gdbarch to "gdbarch". */
1364 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1367 /* Register per-architecture data-pointer.
1369 Reserve space for a per-architecture data-pointer. An identifier
1370 for the reserved data-pointer is returned. That identifer should
1371 be saved in a local static variable.
1373 Memory for the per-architecture data shall be allocated using
1374 gdbarch_obstack_zalloc. That memory will be deleted when the
1375 corresponding architecture object is deleted.
1377 When a previously created architecture is re-selected, the
1378 per-architecture data-pointer for that previous architecture is
1379 restored. INIT() is not re-called.
1381 Multiple registrarants for any architecture are allowed (and
1382 strongly encouraged). */
1384 struct gdbarch_data;
1386 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1387 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1388 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1389 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1390 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1391 struct gdbarch_data *data,
1394 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1397 /* Set the dynamic target-system-dependent parameters (architecture,
1398 byte-order, ...) using information found in the BFD. */
1400 extern void set_gdbarch_from_file (bfd *);
1403 /* Initialize the current architecture to the "first" one we find on
1406 extern void initialize_current_architecture (void);
1408 /* gdbarch trace variable */
1409 extern unsigned int gdbarch_debug;
1411 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1416 #../move-if-change new-gdbarch.h gdbarch.h
1417 compare_new gdbarch.h
1424 exec > new-gdbarch.c
1429 #include "arch-utils.h"
1432 #include "inferior.h"
1435 #include "floatformat.h"
1437 #include "gdb_assert.h"
1438 #include "gdb_string.h"
1439 #include "reggroups.h"
1441 #include "gdb_obstack.h"
1442 #include "observer.h"
1443 #include "regcache.h"
1444 #include "objfiles.h"
1446 /* Static function declarations */
1448 static void alloc_gdbarch_data (struct gdbarch *);
1450 /* Non-zero if we want to trace architecture code. */
1452 #ifndef GDBARCH_DEBUG
1453 #define GDBARCH_DEBUG 0
1455 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1457 show_gdbarch_debug (struct ui_file *file, int from_tty,
1458 struct cmd_list_element *c, const char *value)
1460 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1464 pformat (const struct floatformat **format)
1469 /* Just print out one of them - this is only for diagnostics. */
1470 return format[0]->name;
1474 pstring (const char *string)
1483 # gdbarch open the gdbarch object
1485 printf "/* Maintain the struct gdbarch object. */\n"
1487 printf "struct gdbarch\n"
1489 printf " /* Has this architecture been fully initialized? */\n"
1490 printf " int initialized_p;\n"
1492 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1493 printf " struct obstack *obstack;\n"
1495 printf " /* basic architectural information. */\n"
1496 function_list |
while do_read
1500 printf " ${returntype} ${function};\n"
1504 printf " /* target specific vector. */\n"
1505 printf " struct gdbarch_tdep *tdep;\n"
1506 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1508 printf " /* per-architecture data-pointers. */\n"
1509 printf " unsigned nr_data;\n"
1510 printf " void **data;\n"
1513 /* Multi-arch values.
1515 When extending this structure you must:
1517 Add the field below.
1519 Declare set/get functions and define the corresponding
1522 gdbarch_alloc(): If zero/NULL is not a suitable default,
1523 initialize the new field.
1525 verify_gdbarch(): Confirm that the target updated the field
1528 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1531 \`\`startup_gdbarch()'': Append an initial value to the static
1532 variable (base values on the host's c-type system).
1534 get_gdbarch(): Implement the set/get functions (probably using
1535 the macro's as shortcuts).
1540 function_list |
while do_read
1542 if class_is_variable_p
1544 printf " ${returntype} ${function};\n"
1545 elif class_is_function_p
1547 printf " gdbarch_${function}_ftype *${function};\n"
1552 # A pre-initialized vector
1556 /* The default architecture uses host values (for want of a better
1560 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1562 printf "struct gdbarch startup_gdbarch =\n"
1564 printf " 1, /* Always initialized. */\n"
1565 printf " NULL, /* The obstack. */\n"
1566 printf " /* basic architecture information. */\n"
1567 function_list |
while do_read
1571 printf " ${staticdefault}, /* ${function} */\n"
1575 /* target specific vector and its dump routine. */
1577 /*per-architecture data-pointers. */
1579 /* Multi-arch values */
1581 function_list |
while do_read
1583 if class_is_function_p || class_is_variable_p
1585 printf " ${staticdefault}, /* ${function} */\n"
1589 /* startup_gdbarch() */
1594 # Create a new gdbarch struct
1597 /* Create a new \`\`struct gdbarch'' based on information provided by
1598 \`\`struct gdbarch_info''. */
1603 gdbarch_alloc (const struct gdbarch_info *info,
1604 struct gdbarch_tdep *tdep)
1606 struct gdbarch *gdbarch;
1608 /* Create an obstack for allocating all the per-architecture memory,
1609 then use that to allocate the architecture vector. */
1610 struct obstack *obstack = XMALLOC (struct obstack);
1611 obstack_init (obstack);
1612 gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1613 memset (gdbarch, 0, sizeof (*gdbarch));
1614 gdbarch->obstack = obstack;
1616 alloc_gdbarch_data (gdbarch);
1618 gdbarch->tdep = tdep;
1621 function_list |
while do_read
1625 printf " gdbarch->${function} = info->${function};\n"
1629 printf " /* Force the explicit initialization of these. */\n"
1630 function_list |
while do_read
1632 if class_is_function_p || class_is_variable_p
1634 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1636 printf " gdbarch->${function} = ${predefault};\n"
1641 /* gdbarch_alloc() */
1647 # Free a gdbarch struct.
1651 /* Allocate extra space using the per-architecture obstack. */
1654 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1656 void *data = obstack_alloc (arch->obstack, size);
1658 memset (data, 0, size);
1663 /* Free a gdbarch struct. This should never happen in normal
1664 operation --- once you've created a gdbarch, you keep it around.
1665 However, if an architecture's init function encounters an error
1666 building the structure, it may need to clean up a partially
1667 constructed gdbarch. */
1670 gdbarch_free (struct gdbarch *arch)
1672 struct obstack *obstack;
1674 gdb_assert (arch != NULL);
1675 gdb_assert (!arch->initialized_p);
1676 obstack = arch->obstack;
1677 obstack_free (obstack, 0); /* Includes the ARCH. */
1682 # verify a new architecture
1686 /* Ensure that all values in a GDBARCH are reasonable. */
1689 verify_gdbarch (struct gdbarch *gdbarch)
1691 struct ui_file *log;
1692 struct cleanup *cleanups;
1696 log = mem_fileopen ();
1697 cleanups = make_cleanup_ui_file_delete (log);
1699 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1700 fprintf_unfiltered (log, "\n\tbyte-order");
1701 if (gdbarch->bfd_arch_info == NULL)
1702 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1703 /* Check those that need to be defined for the given multi-arch level. */
1705 function_list |
while do_read
1707 if class_is_function_p || class_is_variable_p
1709 if [ "x${invalid_p}" = "x0" ]
1711 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1712 elif class_is_predicate_p
1714 printf " /* Skip verify of ${function}, has predicate. */\n"
1715 # FIXME: See do_read for potential simplification
1716 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1718 printf " if (${invalid_p})\n"
1719 printf " gdbarch->${function} = ${postdefault};\n"
1720 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1722 printf " if (gdbarch->${function} == ${predefault})\n"
1723 printf " gdbarch->${function} = ${postdefault};\n"
1724 elif [ -n "${postdefault}" ]
1726 printf " if (gdbarch->${function} == 0)\n"
1727 printf " gdbarch->${function} = ${postdefault};\n"
1728 elif [ -n "${invalid_p}" ]
1730 printf " if (${invalid_p})\n"
1731 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1732 elif [ -n "${predefault}" ]
1734 printf " if (gdbarch->${function} == ${predefault})\n"
1735 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1740 buf = ui_file_xstrdup (log, &length);
1741 make_cleanup (xfree, buf);
1743 internal_error (__FILE__, __LINE__,
1744 _("verify_gdbarch: the following are invalid ...%s"),
1746 do_cleanups (cleanups);
1750 # dump the structure
1754 /* Print out the details of the current architecture. */
1757 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1759 const char *gdb_nm_file = "<not-defined>";
1761 #if defined (GDB_NM_FILE)
1762 gdb_nm_file = GDB_NM_FILE;
1764 fprintf_unfiltered (file,
1765 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1768 function_list |
sort -t: -k 3 |
while do_read
1770 # First the predicate
1771 if class_is_predicate_p
1773 printf " fprintf_unfiltered (file,\n"
1774 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1775 printf " gdbarch_${function}_p (gdbarch));\n"
1777 # Print the corresponding value.
1778 if class_is_function_p
1780 printf " fprintf_unfiltered (file,\n"
1781 printf " \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1782 printf " host_address_to_string (gdbarch->${function}));\n"
1785 case "${print}:${returntype}" in
1788 print
="core_addr_to_string_nz (gdbarch->${function})"
1792 print
="plongest (gdbarch->${function})"
1798 printf " fprintf_unfiltered (file,\n"
1799 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1800 printf " ${print});\n"
1804 if (gdbarch->dump_tdep != NULL)
1805 gdbarch->dump_tdep (gdbarch, file);
1813 struct gdbarch_tdep *
1814 gdbarch_tdep (struct gdbarch *gdbarch)
1816 if (gdbarch_debug >= 2)
1817 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1818 return gdbarch->tdep;
1822 function_list |
while do_read
1824 if class_is_predicate_p
1828 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1830 printf " gdb_assert (gdbarch != NULL);\n"
1831 printf " return ${predicate};\n"
1834 if class_is_function_p
1837 printf "${returntype}\n"
1838 if [ "x${formal}" = "xvoid" ]
1840 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1842 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1845 printf " gdb_assert (gdbarch != NULL);\n"
1846 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1847 if class_is_predicate_p
&& test -n "${predefault}"
1849 # Allow a call to a function with a predicate.
1850 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1852 printf " if (gdbarch_debug >= 2)\n"
1853 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1854 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1856 if class_is_multiarch_p
1863 if class_is_multiarch_p
1865 params
="gdbarch, ${actual}"
1870 if [ "x${returntype}" = "xvoid" ]
1872 printf " gdbarch->${function} (${params});\n"
1874 printf " return gdbarch->${function} (${params});\n"
1879 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1880 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1882 printf " gdbarch->${function} = ${function};\n"
1884 elif class_is_variable_p
1887 printf "${returntype}\n"
1888 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1890 printf " gdb_assert (gdbarch != NULL);\n"
1891 if [ "x${invalid_p}" = "x0" ]
1893 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1894 elif [ -n "${invalid_p}" ]
1896 printf " /* Check variable is valid. */\n"
1897 printf " gdb_assert (!(${invalid_p}));\n"
1898 elif [ -n "${predefault}" ]
1900 printf " /* Check variable changed from pre-default. */\n"
1901 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1903 printf " if (gdbarch_debug >= 2)\n"
1904 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1905 printf " return gdbarch->${function};\n"
1909 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1910 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1912 printf " gdbarch->${function} = ${function};\n"
1914 elif class_is_info_p
1917 printf "${returntype}\n"
1918 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1920 printf " gdb_assert (gdbarch != NULL);\n"
1921 printf " if (gdbarch_debug >= 2)\n"
1922 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1923 printf " return gdbarch->${function};\n"
1928 # All the trailing guff
1932 /* Keep a registry of per-architecture data-pointers required by GDB
1939 gdbarch_data_pre_init_ftype *pre_init;
1940 gdbarch_data_post_init_ftype *post_init;
1943 struct gdbarch_data_registration
1945 struct gdbarch_data *data;
1946 struct gdbarch_data_registration *next;
1949 struct gdbarch_data_registry
1952 struct gdbarch_data_registration *registrations;
1955 struct gdbarch_data_registry gdbarch_data_registry =
1960 static struct gdbarch_data *
1961 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1962 gdbarch_data_post_init_ftype *post_init)
1964 struct gdbarch_data_registration **curr;
1966 /* Append the new registration. */
1967 for (curr = &gdbarch_data_registry.registrations;
1969 curr = &(*curr)->next);
1970 (*curr) = XMALLOC (struct gdbarch_data_registration);
1971 (*curr)->next = NULL;
1972 (*curr)->data = XMALLOC (struct gdbarch_data);
1973 (*curr)->data->index = gdbarch_data_registry.nr++;
1974 (*curr)->data->pre_init = pre_init;
1975 (*curr)->data->post_init = post_init;
1976 (*curr)->data->init_p = 1;
1977 return (*curr)->data;
1980 struct gdbarch_data *
1981 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1983 return gdbarch_data_register (pre_init, NULL);
1986 struct gdbarch_data *
1987 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1989 return gdbarch_data_register (NULL, post_init);
1992 /* Create/delete the gdbarch data vector. */
1995 alloc_gdbarch_data (struct gdbarch *gdbarch)
1997 gdb_assert (gdbarch->data == NULL);
1998 gdbarch->nr_data = gdbarch_data_registry.nr;
1999 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2002 /* Initialize the current value of the specified per-architecture
2006 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2007 struct gdbarch_data *data,
2010 gdb_assert (data->index < gdbarch->nr_data);
2011 gdb_assert (gdbarch->data[data->index] == NULL);
2012 gdb_assert (data->pre_init == NULL);
2013 gdbarch->data[data->index] = pointer;
2016 /* Return the current value of the specified per-architecture
2020 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2022 gdb_assert (data->index < gdbarch->nr_data);
2023 if (gdbarch->data[data->index] == NULL)
2025 /* The data-pointer isn't initialized, call init() to get a
2027 if (data->pre_init != NULL)
2028 /* Mid architecture creation: pass just the obstack, and not
2029 the entire architecture, as that way it isn't possible for
2030 pre-init code to refer to undefined architecture
2032 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2033 else if (gdbarch->initialized_p
2034 && data->post_init != NULL)
2035 /* Post architecture creation: pass the entire architecture
2036 (as all fields are valid), but be careful to also detect
2037 recursive references. */
2039 gdb_assert (data->init_p);
2041 gdbarch->data[data->index] = data->post_init (gdbarch);
2045 /* The architecture initialization hasn't completed - punt -
2046 hope that the caller knows what they are doing. Once
2047 deprecated_set_gdbarch_data has been initialized, this can be
2048 changed to an internal error. */
2050 gdb_assert (gdbarch->data[data->index] != NULL);
2052 return gdbarch->data[data->index];
2056 /* Keep a registry of the architectures known by GDB. */
2058 struct gdbarch_registration
2060 enum bfd_architecture bfd_architecture;
2061 gdbarch_init_ftype *init;
2062 gdbarch_dump_tdep_ftype *dump_tdep;
2063 struct gdbarch_list *arches;
2064 struct gdbarch_registration *next;
2067 static struct gdbarch_registration *gdbarch_registry = NULL;
2070 append_name (const char ***buf, int *nr, const char *name)
2072 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
2078 gdbarch_printable_names (void)
2080 /* Accumulate a list of names based on the registed list of
2083 const char **arches = NULL;
2084 struct gdbarch_registration *rego;
2086 for (rego = gdbarch_registry;
2090 const struct bfd_arch_info *ap;
2091 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2093 internal_error (__FILE__, __LINE__,
2094 _("gdbarch_architecture_names: multi-arch unknown"));
2097 append_name (&arches, &nr_arches, ap->printable_name);
2102 append_name (&arches, &nr_arches, NULL);
2108 gdbarch_register (enum bfd_architecture bfd_architecture,
2109 gdbarch_init_ftype *init,
2110 gdbarch_dump_tdep_ftype *dump_tdep)
2112 struct gdbarch_registration **curr;
2113 const struct bfd_arch_info *bfd_arch_info;
2115 /* Check that BFD recognizes this architecture */
2116 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2117 if (bfd_arch_info == NULL)
2119 internal_error (__FILE__, __LINE__,
2120 _("gdbarch: Attempt to register "
2121 "unknown architecture (%d)"),
2124 /* Check that we haven't seen this architecture before. */
2125 for (curr = &gdbarch_registry;
2127 curr = &(*curr)->next)
2129 if (bfd_architecture == (*curr)->bfd_architecture)
2130 internal_error (__FILE__, __LINE__,
2131 _("gdbarch: Duplicate registration "
2132 "of architecture (%s)"),
2133 bfd_arch_info->printable_name);
2137 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2138 bfd_arch_info->printable_name,
2139 host_address_to_string (init));
2141 (*curr) = XMALLOC (struct gdbarch_registration);
2142 (*curr)->bfd_architecture = bfd_architecture;
2143 (*curr)->init = init;
2144 (*curr)->dump_tdep = dump_tdep;
2145 (*curr)->arches = NULL;
2146 (*curr)->next = NULL;
2150 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2151 gdbarch_init_ftype *init)
2153 gdbarch_register (bfd_architecture, init, NULL);
2157 /* Look for an architecture using gdbarch_info. */
2159 struct gdbarch_list *
2160 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2161 const struct gdbarch_info *info)
2163 for (; arches != NULL; arches = arches->next)
2165 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2167 if (info->byte_order != arches->gdbarch->byte_order)
2169 if (info->osabi != arches->gdbarch->osabi)
2171 if (info->target_desc != arches->gdbarch->target_desc)
2179 /* Find an architecture that matches the specified INFO. Create a new
2180 architecture if needed. Return that new architecture. */
2183 gdbarch_find_by_info (struct gdbarch_info info)
2185 struct gdbarch *new_gdbarch;
2186 struct gdbarch_registration *rego;
2188 /* Fill in missing parts of the INFO struct using a number of
2189 sources: "set ..."; INFOabfd supplied; and the global
2191 gdbarch_info_fill (&info);
2193 /* Must have found some sort of architecture. */
2194 gdb_assert (info.bfd_arch_info != NULL);
2198 fprintf_unfiltered (gdb_stdlog,
2199 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2200 (info.bfd_arch_info != NULL
2201 ? info.bfd_arch_info->printable_name
2203 fprintf_unfiltered (gdb_stdlog,
2204 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2206 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2207 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2209 fprintf_unfiltered (gdb_stdlog,
2210 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2211 info.osabi, gdbarch_osabi_name (info.osabi));
2212 fprintf_unfiltered (gdb_stdlog,
2213 "gdbarch_find_by_info: info.abfd %s\n",
2214 host_address_to_string (info.abfd));
2215 fprintf_unfiltered (gdb_stdlog,
2216 "gdbarch_find_by_info: info.tdep_info %s\n",
2217 host_address_to_string (info.tdep_info));
2220 /* Find the tdep code that knows about this architecture. */
2221 for (rego = gdbarch_registry;
2224 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2229 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2230 "No matching architecture\n");
2234 /* Ask the tdep code for an architecture that matches "info". */
2235 new_gdbarch = rego->init (info, rego->arches);
2237 /* Did the tdep code like it? No. Reject the change and revert to
2238 the old architecture. */
2239 if (new_gdbarch == NULL)
2242 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2243 "Target rejected architecture\n");
2247 /* Is this a pre-existing architecture (as determined by already
2248 being initialized)? Move it to the front of the architecture
2249 list (keeping the list sorted Most Recently Used). */
2250 if (new_gdbarch->initialized_p)
2252 struct gdbarch_list **list;
2253 struct gdbarch_list *this;
2255 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2256 "Previous architecture %s (%s) selected\n",
2257 host_address_to_string (new_gdbarch),
2258 new_gdbarch->bfd_arch_info->printable_name);
2259 /* Find the existing arch in the list. */
2260 for (list = ®o->arches;
2261 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2262 list = &(*list)->next);
2263 /* It had better be in the list of architectures. */
2264 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2267 (*list) = this->next;
2268 /* Insert THIS at the front. */
2269 this->next = rego->arches;
2270 rego->arches = this;
2275 /* It's a new architecture. */
2277 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2278 "New architecture %s (%s) selected\n",
2279 host_address_to_string (new_gdbarch),
2280 new_gdbarch->bfd_arch_info->printable_name);
2282 /* Insert the new architecture into the front of the architecture
2283 list (keep the list sorted Most Recently Used). */
2285 struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
2286 this->next = rego->arches;
2287 this->gdbarch = new_gdbarch;
2288 rego->arches = this;
2291 /* Check that the newly installed architecture is valid. Plug in
2292 any post init values. */
2293 new_gdbarch->dump_tdep = rego->dump_tdep;
2294 verify_gdbarch (new_gdbarch);
2295 new_gdbarch->initialized_p = 1;
2298 gdbarch_dump (new_gdbarch, gdb_stdlog);
2303 /* Make the specified architecture current. */
2306 set_target_gdbarch (struct gdbarch *new_gdbarch)
2308 gdb_assert (new_gdbarch != NULL);
2309 gdb_assert (new_gdbarch->initialized_p);
2310 current_inferior ()->gdbarch = new_gdbarch;
2311 observer_notify_architecture_changed (new_gdbarch);
2312 registers_changed ();
2315 /* Return the current inferior's arch. */
2318 target_gdbarch (void)
2320 return current_inferior ()->gdbarch;
2323 extern void _initialize_gdbarch (void);
2326 _initialize_gdbarch (void)
2328 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2329 Set architecture debugging."), _("\\
2330 Show architecture debugging."), _("\\
2331 When non-zero, architecture debugging is enabled."),
2334 &setdebuglist, &showdebuglist);
2340 #../move-if-change new-gdbarch.c gdbarch.c
2341 compare_new gdbarch.c