3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998-2014 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:enum bfd_endian:byte_order:::BFD_ENDIAN_BIG
344 i:enum bfd_endian: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 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
473 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
474 # deprecated_fp_regnum.
475 v:int:deprecated_fp_regnum:::-1:-1::0
477 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
478 v:int:call_dummy_location::::AT_ENTRY_POINT::0
479 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
481 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
482 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
483 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
484 # MAP a GDB RAW register number onto a simulator register number. See
485 # also include/...-sim.h.
486 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
487 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
488 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
490 # Determine the address where a longjmp will land and save this address
491 # in PC. Return nonzero on success.
493 # FRAME corresponds to the longjmp frame.
494 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
497 v:int:believe_pcc_promotion:::::::
499 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
500 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
501 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
502 # Construct a value representing the contents of register REGNUM in
503 # frame FRAME, interpreted as type TYPE. The routine needs to
504 # allocate and return a struct value with all value attributes
505 # (but not the value contents) filled in.
506 f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
508 m:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
509 m:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
510 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
512 # Return the return-value convention that will be used by FUNCTION
513 # to return a value of type VALTYPE. FUNCTION may be NULL in which
514 # case the return convention is computed based only on VALTYPE.
516 # If READBUF is not NULL, extract the return value and save it in this buffer.
518 # If WRITEBUF is not NULL, it contains a return value which will be
519 # stored into the appropriate register. This can be used when we want
520 # to force the value returned by a function (see the "return" command
522 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
524 # Return true if the return value of function is stored in the first hidden
525 # parameter. In theory, this feature should be language-dependent, specified
526 # by language and its ABI, such as C++. Unfortunately, compiler may
527 # implement it to a target-dependent feature. So that we need such hook here
528 # to be aware of this in GDB.
529 m:int:return_in_first_hidden_param_p:struct type *type:type::default_return_in_first_hidden_param_p::0
531 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
532 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
533 # On some platforms, a single function may provide multiple entry points,
534 # e.g. one that is used for function-pointer calls and a different one
535 # that is used for direct function calls.
536 # In order to ensure that breakpoints set on the function will trigger
537 # no matter via which entry point the function is entered, a platform
538 # may provide the skip_entrypoint callback. It is called with IP set
539 # to the main entry point of a function (as determined by the symbol table),
540 # and should return the address of the innermost entry point, where the
541 # actual breakpoint needs to be set. Note that skip_entrypoint is used
542 # by GDB common code even when debugging optimized code, where skip_prologue
544 M:CORE_ADDR:skip_entrypoint:CORE_ADDR ip:ip
546 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
547 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
548 # Return the adjusted address and kind to use for Z0/Z1 packets.
549 # KIND is usually the memory length of the breakpoint, but may have a
550 # different target-specific meaning.
551 m:void:remote_breakpoint_from_pc:CORE_ADDR *pcptr, int *kindptr:pcptr, kindptr:0:default_remote_breakpoint_from_pc::0
552 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
553 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
554 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
555 v:CORE_ADDR:decr_pc_after_break:::0:::0
557 # A function can be addressed by either it's "pointer" (possibly a
558 # descriptor address) or "entry point" (first executable instruction).
559 # The method "convert_from_func_ptr_addr" converting the former to the
560 # latter. gdbarch_deprecated_function_start_offset is being used to implement
561 # a simplified subset of that functionality - the function's address
562 # corresponds to the "function pointer" and the function's start
563 # corresponds to the "function entry point" - and hence is redundant.
565 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
567 # Return the remote protocol register number associated with this
568 # register. Normally the identity mapping.
569 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
571 # Fetch the target specific address used to represent a load module.
572 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
574 v:CORE_ADDR:frame_args_skip:::0:::0
575 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
576 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
577 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
578 # frame-base. Enable frame-base before frame-unwind.
579 F:int:frame_num_args:struct frame_info *frame:frame
581 M:CORE_ADDR:frame_align:CORE_ADDR address:address
582 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
583 v:int:frame_red_zone_size
585 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
586 # On some machines there are bits in addresses which are not really
587 # part of the address, but are used by the kernel, the hardware, etc.
588 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
589 # we get a "real" address such as one would find in a symbol table.
590 # This is used only for addresses of instructions, and even then I'm
591 # not sure it's used in all contexts. It exists to deal with there
592 # being a few stray bits in the PC which would mislead us, not as some
593 # sort of generic thing to handle alignment or segmentation (it's
594 # possible it should be in TARGET_READ_PC instead).
595 m:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
597 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
598 # indicates if the target needs software single step. An ISA method to
601 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
602 # breakpoints using the breakpoint system instead of blatting memory directly
605 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
606 # target can single step. If not, then implement single step using breakpoints.
608 # A return value of 1 means that the software_single_step breakpoints
609 # were inserted; 0 means they were not.
610 F:int:software_single_step:struct frame_info *frame:frame
612 # Return non-zero if the processor is executing a delay slot and a
613 # further single-step is needed before the instruction finishes.
614 M:int:single_step_through_delay:struct frame_info *frame:frame
615 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
616 # disassembler. Perhaps objdump can handle it?
617 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
618 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
621 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
622 # evaluates non-zero, this is the address where the debugger will place
623 # a step-resume breakpoint to get us past the dynamic linker.
624 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
625 # Some systems also have trampoline code for returning from shared libs.
626 m:int:in_solib_return_trampoline:CORE_ADDR pc, const char *name:pc, name::generic_in_solib_return_trampoline::0
628 # A target might have problems with watchpoints as soon as the stack
629 # frame of the current function has been destroyed. This mostly happens
630 # as the first action in a funtion's epilogue. in_function_epilogue_p()
631 # is defined to return a non-zero value if either the given addr is one
632 # instruction after the stack destroying instruction up to the trailing
633 # return instruction or if we can figure out that the stack frame has
634 # already been invalidated regardless of the value of addr. Targets
635 # which don't suffer from that problem could just let this functionality
637 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
638 f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
639 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
640 v:int:cannot_step_breakpoint:::0:0::0
641 v:int:have_nonsteppable_watchpoint:::0:0::0
642 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
643 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
645 # Return the appropriate type_flags for the supplied address class.
646 # This function should return 1 if the address class was recognized and
647 # type_flags was set, zero otherwise.
648 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
649 # Is a register in a group
650 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
651 # Fetch the pointer to the ith function argument.
652 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
654 # Return the appropriate register set for a core file section with
655 # name SECT_NAME and size SECT_SIZE.
656 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
658 # Supported register notes in a core file.
659 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
661 # Create core file notes
662 M:char *:make_corefile_notes:bfd *obfd, int *note_size:obfd, note_size
664 # The elfcore writer hook to use to write Linux prpsinfo notes to core
665 # files. Most Linux architectures use the same prpsinfo32 or
666 # prpsinfo64 layouts, and so won't need to provide this hook, as we
667 # call the Linux generic routines in bfd to write prpsinfo notes by
669 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
671 # Find core file memory regions
672 M:int:find_memory_regions:find_memory_region_ftype func, void *data:func, data
674 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
675 # core file into buffer READBUF with length LEN.
676 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, ULONGEST len:readbuf, offset, len
678 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
679 # libraries list from core file into buffer READBUF with length LEN.
680 M:LONGEST:core_xfer_shared_libraries_aix:gdb_byte *readbuf, ULONGEST offset, ULONGEST len:readbuf, offset, len
682 # How the core target converts a PTID from a core file to a string.
683 M:char *:core_pid_to_str:ptid_t ptid:ptid
685 # BFD target to use when generating a core file.
686 V:const char *:gcore_bfd_target:::0:0:::pstring (gdbarch->gcore_bfd_target)
688 # If the elements of C++ vtables are in-place function descriptors rather
689 # than normal function pointers (which may point to code or a descriptor),
691 v:int:vtable_function_descriptors:::0:0::0
693 # Set if the least significant bit of the delta is used instead of the least
694 # significant bit of the pfn for pointers to virtual member functions.
695 v:int:vbit_in_delta:::0:0::0
697 # Advance PC to next instruction in order to skip a permanent breakpoint.
698 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
700 # The maximum length of an instruction on this architecture in bytes.
701 V:ULONGEST:max_insn_length:::0:0
703 # Copy the instruction at FROM to TO, and make any adjustments
704 # necessary to single-step it at that address.
706 # REGS holds the state the thread's registers will have before
707 # executing the copied instruction; the PC in REGS will refer to FROM,
708 # not the copy at TO. The caller should update it to point at TO later.
710 # Return a pointer to data of the architecture's choice to be passed
711 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
712 # the instruction's effects have been completely simulated, with the
713 # resulting state written back to REGS.
715 # For a general explanation of displaced stepping and how GDB uses it,
716 # see the comments in infrun.c.
718 # The TO area is only guaranteed to have space for
719 # gdbarch_max_insn_length (arch) bytes, so this function must not
720 # write more bytes than that to that area.
722 # If you do not provide this function, GDB assumes that the
723 # architecture does not support displaced stepping.
725 # If your architecture doesn't need to adjust instructions before
726 # single-stepping them, consider using simple_displaced_step_copy_insn
728 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
730 # Return true if GDB should use hardware single-stepping to execute
731 # the displaced instruction identified by CLOSURE. If false,
732 # GDB will simply restart execution at the displaced instruction
733 # location, and it is up to the target to ensure GDB will receive
734 # control again (e.g. by placing a software breakpoint instruction
735 # into the displaced instruction buffer).
737 # The default implementation returns false on all targets that
738 # provide a gdbarch_software_single_step routine, and true otherwise.
739 m:int:displaced_step_hw_singlestep:struct displaced_step_closure *closure:closure::default_displaced_step_hw_singlestep::0
741 # Fix up the state resulting from successfully single-stepping a
742 # displaced instruction, to give the result we would have gotten from
743 # stepping the instruction in its original location.
745 # REGS is the register state resulting from single-stepping the
746 # displaced instruction.
748 # CLOSURE is the result from the matching call to
749 # gdbarch_displaced_step_copy_insn.
751 # If you provide gdbarch_displaced_step_copy_insn.but not this
752 # function, then GDB assumes that no fixup is needed after
753 # single-stepping the instruction.
755 # For a general explanation of displaced stepping and how GDB uses it,
756 # see the comments in infrun.c.
757 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
759 # Free a closure returned by gdbarch_displaced_step_copy_insn.
761 # If you provide gdbarch_displaced_step_copy_insn, you must provide
762 # this function as well.
764 # If your architecture uses closures that don't need to be freed, then
765 # you can use simple_displaced_step_free_closure here.
767 # For a general explanation of displaced stepping and how GDB uses it,
768 # see the comments in infrun.c.
769 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
771 # Return the address of an appropriate place to put displaced
772 # instructions while we step over them. There need only be one such
773 # place, since we're only stepping one thread over a breakpoint at a
776 # For a general explanation of displaced stepping and how GDB uses it,
777 # see the comments in infrun.c.
778 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
780 # Relocate an instruction to execute at a different address. OLDLOC
781 # is the address in the inferior memory where the instruction to
782 # relocate is currently at. On input, TO points to the destination
783 # where we want the instruction to be copied (and possibly adjusted)
784 # to. On output, it points to one past the end of the resulting
785 # instruction(s). The effect of executing the instruction at TO shall
786 # be the same as if executing it at FROM. For example, call
787 # instructions that implicitly push the return address on the stack
788 # should be adjusted to return to the instruction after OLDLOC;
789 # relative branches, and other PC-relative instructions need the
790 # offset adjusted; etc.
791 M:void:relocate_instruction:CORE_ADDR *to, CORE_ADDR from:to, from::NULL
793 # Refresh overlay mapped state for section OSECT.
794 F:void:overlay_update:struct obj_section *osect:osect
796 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
798 # Handle special encoding of static variables in stabs debug info.
799 F:const char *:static_transform_name:const char *name:name
800 # Set if the address in N_SO or N_FUN stabs may be zero.
801 v:int:sofun_address_maybe_missing:::0:0::0
803 # Parse the instruction at ADDR storing in the record execution log
804 # the registers REGCACHE and memory ranges that will be affected when
805 # the instruction executes, along with their current values.
806 # Return -1 if something goes wrong, 0 otherwise.
807 M:int:process_record:struct regcache *regcache, CORE_ADDR addr:regcache, addr
809 # Save process state after a signal.
810 # Return -1 if something goes wrong, 0 otherwise.
811 M:int:process_record_signal:struct regcache *regcache, enum gdb_signal signal:regcache, signal
813 # Signal translation: translate inferior's signal (target's) number
814 # into GDB's representation. The implementation of this method must
815 # be host independent. IOW, don't rely on symbols of the NAT_FILE
816 # header (the nm-*.h files), the host <signal.h> header, or similar
817 # headers. This is mainly used when cross-debugging core files ---
818 # "Live" targets hide the translation behind the target interface
819 # (target_wait, target_resume, etc.).
820 M:enum gdb_signal:gdb_signal_from_target:int signo:signo
822 # Signal translation: translate the GDB's internal signal number into
823 # the inferior's signal (target's) representation. The implementation
824 # of this method must be host independent. IOW, don't rely on symbols
825 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
826 # header, or similar headers.
827 # Return the target signal number if found, or -1 if the GDB internal
828 # signal number is invalid.
829 M:int:gdb_signal_to_target:enum gdb_signal signal:signal
831 # Extra signal info inspection.
833 # Return a type suitable to inspect extra signal information.
834 M:struct type *:get_siginfo_type:void:
836 # Record architecture-specific information from the symbol table.
837 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
839 # Function for the 'catch syscall' feature.
841 # Get architecture-specific system calls information from registers.
842 M:LONGEST:get_syscall_number:ptid_t ptid:ptid
844 # SystemTap related fields and functions.
846 # A NULL-terminated array of prefixes used to mark an integer constant
847 # on the architecture's assembly.
848 # For example, on x86 integer constants are written as:
850 # \$10 ;; integer constant 10
852 # in this case, this prefix would be the character \`\$\'.
853 v:const char *const *:stap_integer_prefixes:::0:0::0:pstring_list (gdbarch->stap_integer_prefixes)
855 # A NULL-terminated array of suffixes used to mark an integer constant
856 # on the architecture's assembly.
857 v:const char *const *:stap_integer_suffixes:::0:0::0:pstring_list (gdbarch->stap_integer_suffixes)
859 # A NULL-terminated array of prefixes used to mark a register name on
860 # the architecture's assembly.
861 # For example, on x86 the register name is written as:
863 # \%eax ;; register eax
865 # in this case, this prefix would be the character \`\%\'.
866 v:const char *const *:stap_register_prefixes:::0:0::0:pstring_list (gdbarch->stap_register_prefixes)
868 # A NULL-terminated array of suffixes used to mark a register name on
869 # the architecture's assembly.
870 v:const char *const *:stap_register_suffixes:::0:0::0:pstring_list (gdbarch->stap_register_suffixes)
872 # A NULL-terminated array of prefixes used to mark a register
873 # indirection on the architecture's assembly.
874 # For example, on x86 the register indirection is written as:
876 # \(\%eax\) ;; indirecting eax
878 # in this case, this prefix would be the charater \`\(\'.
880 # Please note that we use the indirection prefix also for register
881 # displacement, e.g., \`4\(\%eax\)\' on x86.
882 v:const char *const *:stap_register_indirection_prefixes:::0:0::0:pstring_list (gdbarch->stap_register_indirection_prefixes)
884 # A NULL-terminated array of suffixes used to mark a register
885 # indirection on the architecture's assembly.
886 # For example, on x86 the register indirection is written as:
888 # \(\%eax\) ;; indirecting eax
890 # in this case, this prefix would be the charater \`\)\'.
892 # Please note that we use the indirection suffix also for register
893 # displacement, e.g., \`4\(\%eax\)\' on x86.
894 v:const char *const *:stap_register_indirection_suffixes:::0:0::0:pstring_list (gdbarch->stap_register_indirection_suffixes)
896 # Prefix(es) used to name a register using GDB's nomenclature.
898 # For example, on PPC a register is represented by a number in the assembly
899 # language (e.g., \`10\' is the 10th general-purpose register). However,
900 # inside GDB this same register has an \`r\' appended to its name, so the 10th
901 # register would be represented as \`r10\' internally.
902 v:const char *:stap_gdb_register_prefix:::0:0::0:pstring (gdbarch->stap_gdb_register_prefix)
904 # Suffix used to name a register using GDB's nomenclature.
905 v:const char *:stap_gdb_register_suffix:::0:0::0:pstring (gdbarch->stap_gdb_register_suffix)
907 # Check if S is a single operand.
909 # Single operands can be:
910 # \- Literal integers, e.g. \`\$10\' on x86
911 # \- Register access, e.g. \`\%eax\' on x86
912 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
913 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
915 # This function should check for these patterns on the string
916 # and return 1 if some were found, or zero otherwise. Please try to match
917 # as much info as you can from the string, i.e., if you have to match
918 # something like \`\(\%\', do not match just the \`\(\'.
919 M:int:stap_is_single_operand:const char *s:s
921 # Function used to handle a "special case" in the parser.
923 # A "special case" is considered to be an unknown token, i.e., a token
924 # that the parser does not know how to parse. A good example of special
925 # case would be ARM's register displacement syntax:
927 # [R0, #4] ;; displacing R0 by 4
929 # Since the parser assumes that a register displacement is of the form:
931 # <number> <indirection_prefix> <register_name> <indirection_suffix>
933 # it means that it will not be able to recognize and parse this odd syntax.
934 # Therefore, we should add a special case function that will handle this token.
936 # This function should generate the proper expression form of the expression
937 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
938 # and so on). It should also return 1 if the parsing was successful, or zero
939 # if the token was not recognized as a special token (in this case, returning
940 # zero means that the special parser is deferring the parsing to the generic
941 # parser), and should advance the buffer pointer (p->arg).
942 M:int:stap_parse_special_token:struct stap_parse_info *p:p
945 # True if the list of shared libraries is one and only for all
946 # processes, as opposed to a list of shared libraries per inferior.
947 # This usually means that all processes, although may or may not share
948 # an address space, will see the same set of symbols at the same
950 v:int:has_global_solist:::0:0::0
952 # On some targets, even though each inferior has its own private
953 # address space, the debug interface takes care of making breakpoints
954 # visible to all address spaces automatically. For such cases,
955 # this property should be set to true.
956 v:int:has_global_breakpoints:::0:0::0
958 # True if inferiors share an address space (e.g., uClinux).
959 m:int:has_shared_address_space:void:::default_has_shared_address_space::0
961 # True if a fast tracepoint can be set at an address.
962 m:int:fast_tracepoint_valid_at:CORE_ADDR addr, int *isize, char **msg:addr, isize, msg::default_fast_tracepoint_valid_at::0
964 # Return the "auto" target charset.
965 f:const char *:auto_charset:void::default_auto_charset:default_auto_charset::0
966 # Return the "auto" target wide charset.
967 f:const char *:auto_wide_charset:void::default_auto_wide_charset:default_auto_wide_charset::0
969 # If non-empty, this is a file extension that will be opened in place
970 # of the file extension reported by the shared library list.
972 # This is most useful for toolchains that use a post-linker tool,
973 # where the names of the files run on the target differ in extension
974 # compared to the names of the files GDB should load for debug info.
975 v:const char *:solib_symbols_extension:::::::pstring (gdbarch->solib_symbols_extension)
977 # If true, the target OS has DOS-based file system semantics. That
978 # is, absolute paths include a drive name, and the backslash is
979 # considered a directory separator.
980 v:int:has_dos_based_file_system:::0:0::0
982 # Generate bytecodes to collect the return address in a frame.
983 # Since the bytecodes run on the target, possibly with GDB not even
984 # connected, the full unwinding machinery is not available, and
985 # typically this function will issue bytecodes for one or more likely
986 # places that the return address may be found.
987 m:void:gen_return_address:struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope:ax, value, scope::default_gen_return_address::0
989 # Implement the "info proc" command.
990 M:void:info_proc:char *args, enum info_proc_what what:args, what
992 # Implement the "info proc" command for core files. Noe that there
993 # are two "info_proc"-like methods on gdbarch -- one for core files,
994 # one for live targets.
995 M:void:core_info_proc:char *args, enum info_proc_what what:args, what
997 # Iterate over all objfiles in the order that makes the most sense
998 # for the architecture to make global symbol searches.
1000 # CB is a callback function where OBJFILE is the objfile to be searched,
1001 # and CB_DATA a pointer to user-defined data (the same data that is passed
1002 # when calling this gdbarch method). The iteration stops if this function
1005 # CB_DATA is a pointer to some user-defined data to be passed to
1008 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1009 # inspected when the symbol search was requested.
1010 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
1012 # Ravenscar arch-dependent ops.
1013 v:struct ravenscar_arch_ops *:ravenscar_ops:::NULL:NULL::0:host_address_to_string (gdbarch->ravenscar_ops)
1015 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1016 m:int:insn_is_call:CORE_ADDR addr:addr::default_insn_is_call::0
1018 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1019 m:int:insn_is_ret:CORE_ADDR addr:addr::default_insn_is_ret::0
1021 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1022 m:int:insn_is_jump:CORE_ADDR addr:addr::default_insn_is_jump::0
1029 exec > new-gdbarch.log
1030 function_list |
while do_read
1033 ${class} ${returntype} ${function} ($formal)
1037 eval echo \"\ \ \ \
${r}=\
${${r}}\"
1039 if class_is_predicate_p
&& fallback_default_p
1041 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1045 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
1047 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1051 if class_is_multiarch_p
1053 if class_is_predicate_p
; then :
1054 elif test "x${predefault}" = "x"
1056 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1065 compare_new gdbarch.log
1071 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1074 /* Dynamic architecture support for GDB, the GNU debugger.
1076 Copyright (C) 1998-2014 Free Software Foundation, Inc.
1078 This file is part of GDB.
1080 This program is free software; you can redistribute it and/or modify
1081 it under the terms of the GNU General Public License as published by
1082 the Free Software Foundation; either version 3 of the License, or
1083 (at your option) any later version.
1085 This program is distributed in the hope that it will be useful,
1086 but WITHOUT ANY WARRANTY; without even the implied warranty of
1087 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1088 GNU General Public License for more details.
1090 You should have received a copy of the GNU General Public License
1091 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1093 /* This file was created with the aid of \`\`gdbarch.sh''.
1095 The Bourne shell script \`\`gdbarch.sh'' creates the files
1096 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1097 against the existing \`\`gdbarch.[hc]''. Any differences found
1100 If editing this file, please also run gdbarch.sh and merge any
1101 changes into that script. Conversely, when making sweeping changes
1102 to this file, modifying gdbarch.sh and using its output may prove
1112 exec > new-gdbarch.h
1124 struct minimal_symbol;
1128 struct disassemble_info;
1131 struct bp_target_info;
1133 struct displaced_step_closure;
1134 struct core_regset_section;
1138 struct stap_parse_info;
1139 struct ravenscar_arch_ops;
1140 struct elf_internal_linux_prpsinfo;
1142 /* The architecture associated with the inferior through the
1143 connection to the target.
1145 The architecture vector provides some information that is really a
1146 property of the inferior, accessed through a particular target:
1147 ptrace operations; the layout of certain RSP packets; the solib_ops
1148 vector; etc. To differentiate architecture accesses to
1149 per-inferior/target properties from
1150 per-thread/per-frame/per-objfile properties, accesses to
1151 per-inferior/target properties should be made through this
1154 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1155 extern struct gdbarch *target_gdbarch (void);
1157 /* The initial, default architecture. It uses host values (for want of a better
1159 extern struct gdbarch startup_gdbarch;
1162 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1165 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1166 (struct objfile *objfile, void *cb_data);
1169 # function typedef's
1172 printf "/* The following are pre-initialized by GDBARCH. */\n"
1173 function_list |
while do_read
1178 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1179 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
1183 # function typedef's
1186 printf "/* The following are initialized by the target dependent code. */\n"
1187 function_list |
while do_read
1189 if [ -n "${comment}" ]
1191 echo "${comment}" |
sed \
1197 if class_is_predicate_p
1200 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
1202 if class_is_variable_p
1205 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1206 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
1208 if class_is_function_p
1211 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1213 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
1214 elif class_is_multiarch_p
1216 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
1218 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
1220 if [ "x${formal}" = "xvoid" ]
1222 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
1224 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
1226 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
1233 /* Definition for an unknown syscall, used basically in error-cases. */
1234 #define UNKNOWN_SYSCALL (-1)
1236 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1239 /* Mechanism for co-ordinating the selection of a specific
1242 GDB targets (*-tdep.c) can register an interest in a specific
1243 architecture. Other GDB components can register a need to maintain
1244 per-architecture data.
1246 The mechanisms below ensures that there is only a loose connection
1247 between the set-architecture command and the various GDB
1248 components. Each component can independently register their need
1249 to maintain architecture specific data with gdbarch.
1253 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1256 The more traditional mega-struct containing architecture specific
1257 data for all the various GDB components was also considered. Since
1258 GDB is built from a variable number of (fairly independent)
1259 components it was determined that the global aproach was not
1263 /* Register a new architectural family with GDB.
1265 Register support for the specified ARCHITECTURE with GDB. When
1266 gdbarch determines that the specified architecture has been
1267 selected, the corresponding INIT function is called.
1271 The INIT function takes two parameters: INFO which contains the
1272 information available to gdbarch about the (possibly new)
1273 architecture; ARCHES which is a list of the previously created
1274 \`\`struct gdbarch'' for this architecture.
1276 The INFO parameter is, as far as possible, be pre-initialized with
1277 information obtained from INFO.ABFD or the global defaults.
1279 The ARCHES parameter is a linked list (sorted most recently used)
1280 of all the previously created architures for this architecture
1281 family. The (possibly NULL) ARCHES->gdbarch can used to access
1282 values from the previously selected architecture for this
1283 architecture family.
1285 The INIT function shall return any of: NULL - indicating that it
1286 doesn't recognize the selected architecture; an existing \`\`struct
1287 gdbarch'' from the ARCHES list - indicating that the new
1288 architecture is just a synonym for an earlier architecture (see
1289 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1290 - that describes the selected architecture (see gdbarch_alloc()).
1292 The DUMP_TDEP function shall print out all target specific values.
1293 Care should be taken to ensure that the function works in both the
1294 multi-arch and non- multi-arch cases. */
1298 struct gdbarch *gdbarch;
1299 struct gdbarch_list *next;
1304 /* Use default: NULL (ZERO). */
1305 const struct bfd_arch_info *bfd_arch_info;
1307 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1308 enum bfd_endian byte_order;
1310 enum bfd_endian byte_order_for_code;
1312 /* Use default: NULL (ZERO). */
1315 /* Use default: NULL (ZERO). */
1316 struct gdbarch_tdep_info *tdep_info;
1318 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1319 enum gdb_osabi osabi;
1321 /* Use default: NULL (ZERO). */
1322 const struct target_desc *target_desc;
1325 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1326 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1328 /* DEPRECATED - use gdbarch_register() */
1329 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1331 extern void gdbarch_register (enum bfd_architecture architecture,
1332 gdbarch_init_ftype *,
1333 gdbarch_dump_tdep_ftype *);
1336 /* Return a freshly allocated, NULL terminated, array of the valid
1337 architecture names. Since architectures are registered during the
1338 _initialize phase this function only returns useful information
1339 once initialization has been completed. */
1341 extern const char **gdbarch_printable_names (void);
1344 /* Helper function. Search the list of ARCHES for a GDBARCH that
1345 matches the information provided by INFO. */
1347 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1350 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1351 basic initialization using values obtained from the INFO and TDEP
1352 parameters. set_gdbarch_*() functions are called to complete the
1353 initialization of the object. */
1355 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1358 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1359 It is assumed that the caller freeds the \`\`struct
1362 extern void gdbarch_free (struct gdbarch *);
1365 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1366 obstack. The memory is freed when the corresponding architecture
1369 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1370 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1371 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1374 /* Helper function. Force an update of the current architecture.
1376 The actual architecture selected is determined by INFO, \`\`(gdb) set
1377 architecture'' et.al., the existing architecture and BFD's default
1378 architecture. INFO should be initialized to zero and then selected
1379 fields should be updated.
1381 Returns non-zero if the update succeeds. */
1383 extern int gdbarch_update_p (struct gdbarch_info info);
1386 /* Helper function. Find an architecture matching info.
1388 INFO should be initialized using gdbarch_info_init, relevant fields
1389 set, and then finished using gdbarch_info_fill.
1391 Returns the corresponding architecture, or NULL if no matching
1392 architecture was found. */
1394 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1397 /* Helper function. Set the target gdbarch to "gdbarch". */
1399 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1402 /* Register per-architecture data-pointer.
1404 Reserve space for a per-architecture data-pointer. An identifier
1405 for the reserved data-pointer is returned. That identifer should
1406 be saved in a local static variable.
1408 Memory for the per-architecture data shall be allocated using
1409 gdbarch_obstack_zalloc. That memory will be deleted when the
1410 corresponding architecture object is deleted.
1412 When a previously created architecture is re-selected, the
1413 per-architecture data-pointer for that previous architecture is
1414 restored. INIT() is not re-called.
1416 Multiple registrarants for any architecture are allowed (and
1417 strongly encouraged). */
1419 struct gdbarch_data;
1421 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1422 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1423 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1424 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1425 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1426 struct gdbarch_data *data,
1429 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1432 /* Set the dynamic target-system-dependent parameters (architecture,
1433 byte-order, ...) using information found in the BFD. */
1435 extern void set_gdbarch_from_file (bfd *);
1438 /* Initialize the current architecture to the "first" one we find on
1441 extern void initialize_current_architecture (void);
1443 /* gdbarch trace variable */
1444 extern unsigned int gdbarch_debug;
1446 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1451 #../move-if-change new-gdbarch.h gdbarch.h
1452 compare_new gdbarch.h
1459 exec > new-gdbarch.c
1464 #include "arch-utils.h"
1467 #include "inferior.h"
1470 #include "floatformat.h"
1472 #include "gdb_assert.h"
1474 #include "reggroups.h"
1476 #include "gdb_obstack.h"
1477 #include "observer.h"
1478 #include "regcache.h"
1479 #include "objfiles.h"
1481 /* Static function declarations */
1483 static void alloc_gdbarch_data (struct gdbarch *);
1485 /* Non-zero if we want to trace architecture code. */
1487 #ifndef GDBARCH_DEBUG
1488 #define GDBARCH_DEBUG 0
1490 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1492 show_gdbarch_debug (struct ui_file *file, int from_tty,
1493 struct cmd_list_element *c, const char *value)
1495 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1499 pformat (const struct floatformat **format)
1504 /* Just print out one of them - this is only for diagnostics. */
1505 return format[0]->name;
1509 pstring (const char *string)
1516 /* Helper function to print a list of strings, represented as "const
1517 char *const *". The list is printed comma-separated. */
1520 pstring_list (const char *const *list)
1522 static char ret[100];
1523 const char *const *p;
1530 for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1532 size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1538 gdb_assert (offset - 2 < sizeof (ret));
1539 ret[offset - 2] = '\0';
1547 # gdbarch open the gdbarch object
1549 printf "/* Maintain the struct gdbarch object. */\n"
1551 printf "struct gdbarch\n"
1553 printf " /* Has this architecture been fully initialized? */\n"
1554 printf " int initialized_p;\n"
1556 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1557 printf " struct obstack *obstack;\n"
1559 printf " /* basic architectural information. */\n"
1560 function_list |
while do_read
1564 printf " ${returntype} ${function};\n"
1568 printf " /* target specific vector. */\n"
1569 printf " struct gdbarch_tdep *tdep;\n"
1570 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1572 printf " /* per-architecture data-pointers. */\n"
1573 printf " unsigned nr_data;\n"
1574 printf " void **data;\n"
1577 /* Multi-arch values.
1579 When extending this structure you must:
1581 Add the field below.
1583 Declare set/get functions and define the corresponding
1586 gdbarch_alloc(): If zero/NULL is not a suitable default,
1587 initialize the new field.
1589 verify_gdbarch(): Confirm that the target updated the field
1592 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1595 \`\`startup_gdbarch()'': Append an initial value to the static
1596 variable (base values on the host's c-type system).
1598 get_gdbarch(): Implement the set/get functions (probably using
1599 the macro's as shortcuts).
1604 function_list |
while do_read
1606 if class_is_variable_p
1608 printf " ${returntype} ${function};\n"
1609 elif class_is_function_p
1611 printf " gdbarch_${function}_ftype *${function};\n"
1616 # A pre-initialized vector
1620 /* The default architecture uses host values (for want of a better
1624 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1626 printf "struct gdbarch startup_gdbarch =\n"
1628 printf " 1, /* Always initialized. */\n"
1629 printf " NULL, /* The obstack. */\n"
1630 printf " /* basic architecture information. */\n"
1631 function_list |
while do_read
1635 printf " ${staticdefault}, /* ${function} */\n"
1639 /* target specific vector and its dump routine. */
1641 /*per-architecture data-pointers. */
1643 /* Multi-arch values */
1645 function_list |
while do_read
1647 if class_is_function_p || class_is_variable_p
1649 printf " ${staticdefault}, /* ${function} */\n"
1653 /* startup_gdbarch() */
1658 # Create a new gdbarch struct
1661 /* Create a new \`\`struct gdbarch'' based on information provided by
1662 \`\`struct gdbarch_info''. */
1667 gdbarch_alloc (const struct gdbarch_info *info,
1668 struct gdbarch_tdep *tdep)
1670 struct gdbarch *gdbarch;
1672 /* Create an obstack for allocating all the per-architecture memory,
1673 then use that to allocate the architecture vector. */
1674 struct obstack *obstack = XNEW (struct obstack);
1675 obstack_init (obstack);
1676 gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1677 memset (gdbarch, 0, sizeof (*gdbarch));
1678 gdbarch->obstack = obstack;
1680 alloc_gdbarch_data (gdbarch);
1682 gdbarch->tdep = tdep;
1685 function_list |
while do_read
1689 printf " gdbarch->${function} = info->${function};\n"
1693 printf " /* Force the explicit initialization of these. */\n"
1694 function_list |
while do_read
1696 if class_is_function_p || class_is_variable_p
1698 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1700 printf " gdbarch->${function} = ${predefault};\n"
1705 /* gdbarch_alloc() */
1711 # Free a gdbarch struct.
1715 /* Allocate extra space using the per-architecture obstack. */
1718 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1720 void *data = obstack_alloc (arch->obstack, size);
1722 memset (data, 0, size);
1727 /* Free a gdbarch struct. This should never happen in normal
1728 operation --- once you've created a gdbarch, you keep it around.
1729 However, if an architecture's init function encounters an error
1730 building the structure, it may need to clean up a partially
1731 constructed gdbarch. */
1734 gdbarch_free (struct gdbarch *arch)
1736 struct obstack *obstack;
1738 gdb_assert (arch != NULL);
1739 gdb_assert (!arch->initialized_p);
1740 obstack = arch->obstack;
1741 obstack_free (obstack, 0); /* Includes the ARCH. */
1746 # verify a new architecture
1750 /* Ensure that all values in a GDBARCH are reasonable. */
1753 verify_gdbarch (struct gdbarch *gdbarch)
1755 struct ui_file *log;
1756 struct cleanup *cleanups;
1760 log = mem_fileopen ();
1761 cleanups = make_cleanup_ui_file_delete (log);
1763 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1764 fprintf_unfiltered (log, "\n\tbyte-order");
1765 if (gdbarch->bfd_arch_info == NULL)
1766 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1767 /* Check those that need to be defined for the given multi-arch level. */
1769 function_list |
while do_read
1771 if class_is_function_p || class_is_variable_p
1773 if [ "x${invalid_p}" = "x0" ]
1775 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1776 elif class_is_predicate_p
1778 printf " /* Skip verify of ${function}, has predicate. */\n"
1779 # FIXME: See do_read for potential simplification
1780 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1782 printf " if (${invalid_p})\n"
1783 printf " gdbarch->${function} = ${postdefault};\n"
1784 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1786 printf " if (gdbarch->${function} == ${predefault})\n"
1787 printf " gdbarch->${function} = ${postdefault};\n"
1788 elif [ -n "${postdefault}" ]
1790 printf " if (gdbarch->${function} == 0)\n"
1791 printf " gdbarch->${function} = ${postdefault};\n"
1792 elif [ -n "${invalid_p}" ]
1794 printf " if (${invalid_p})\n"
1795 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1796 elif [ -n "${predefault}" ]
1798 printf " if (gdbarch->${function} == ${predefault})\n"
1799 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1804 buf = ui_file_xstrdup (log, &length);
1805 make_cleanup (xfree, buf);
1807 internal_error (__FILE__, __LINE__,
1808 _("verify_gdbarch: the following are invalid ...%s"),
1810 do_cleanups (cleanups);
1814 # dump the structure
1818 /* Print out the details of the current architecture. */
1821 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1823 const char *gdb_nm_file = "<not-defined>";
1825 #if defined (GDB_NM_FILE)
1826 gdb_nm_file = GDB_NM_FILE;
1828 fprintf_unfiltered (file,
1829 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1832 function_list |
sort -t: -k 3 |
while do_read
1834 # First the predicate
1835 if class_is_predicate_p
1837 printf " fprintf_unfiltered (file,\n"
1838 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1839 printf " gdbarch_${function}_p (gdbarch));\n"
1841 # Print the corresponding value.
1842 if class_is_function_p
1844 printf " fprintf_unfiltered (file,\n"
1845 printf " \"gdbarch_dump: ${function} = <%%s>\\\\n\",\n"
1846 printf " host_address_to_string (gdbarch->${function}));\n"
1849 case "${print}:${returntype}" in
1852 print
="core_addr_to_string_nz (gdbarch->${function})"
1856 print
="plongest (gdbarch->${function})"
1862 printf " fprintf_unfiltered (file,\n"
1863 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1864 printf " ${print});\n"
1868 if (gdbarch->dump_tdep != NULL)
1869 gdbarch->dump_tdep (gdbarch, file);
1877 struct gdbarch_tdep *
1878 gdbarch_tdep (struct gdbarch *gdbarch)
1880 if (gdbarch_debug >= 2)
1881 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1882 return gdbarch->tdep;
1886 function_list |
while do_read
1888 if class_is_predicate_p
1892 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1894 printf " gdb_assert (gdbarch != NULL);\n"
1895 printf " return ${predicate};\n"
1898 if class_is_function_p
1901 printf "${returntype}\n"
1902 if [ "x${formal}" = "xvoid" ]
1904 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1906 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1909 printf " gdb_assert (gdbarch != NULL);\n"
1910 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1911 if class_is_predicate_p
&& test -n "${predefault}"
1913 # Allow a call to a function with a predicate.
1914 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1916 printf " if (gdbarch_debug >= 2)\n"
1917 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1918 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1920 if class_is_multiarch_p
1927 if class_is_multiarch_p
1929 params
="gdbarch, ${actual}"
1934 if [ "x${returntype}" = "xvoid" ]
1936 printf " gdbarch->${function} (${params});\n"
1938 printf " return gdbarch->${function} (${params});\n"
1943 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1944 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1946 printf " gdbarch->${function} = ${function};\n"
1948 elif class_is_variable_p
1951 printf "${returntype}\n"
1952 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1954 printf " gdb_assert (gdbarch != NULL);\n"
1955 if [ "x${invalid_p}" = "x0" ]
1957 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1958 elif [ -n "${invalid_p}" ]
1960 printf " /* Check variable is valid. */\n"
1961 printf " gdb_assert (!(${invalid_p}));\n"
1962 elif [ -n "${predefault}" ]
1964 printf " /* Check variable changed from pre-default. */\n"
1965 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1967 printf " if (gdbarch_debug >= 2)\n"
1968 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1969 printf " return gdbarch->${function};\n"
1973 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1974 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1976 printf " gdbarch->${function} = ${function};\n"
1978 elif class_is_info_p
1981 printf "${returntype}\n"
1982 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1984 printf " gdb_assert (gdbarch != NULL);\n"
1985 printf " if (gdbarch_debug >= 2)\n"
1986 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1987 printf " return gdbarch->${function};\n"
1992 # All the trailing guff
1996 /* Keep a registry of per-architecture data-pointers required by GDB
2003 gdbarch_data_pre_init_ftype *pre_init;
2004 gdbarch_data_post_init_ftype *post_init;
2007 struct gdbarch_data_registration
2009 struct gdbarch_data *data;
2010 struct gdbarch_data_registration *next;
2013 struct gdbarch_data_registry
2016 struct gdbarch_data_registration *registrations;
2019 struct gdbarch_data_registry gdbarch_data_registry =
2024 static struct gdbarch_data *
2025 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2026 gdbarch_data_post_init_ftype *post_init)
2028 struct gdbarch_data_registration **curr;
2030 /* Append the new registration. */
2031 for (curr = &gdbarch_data_registry.registrations;
2033 curr = &(*curr)->next);
2034 (*curr) = XNEW (struct gdbarch_data_registration);
2035 (*curr)->next = NULL;
2036 (*curr)->data = XNEW (struct gdbarch_data);
2037 (*curr)->data->index = gdbarch_data_registry.nr++;
2038 (*curr)->data->pre_init = pre_init;
2039 (*curr)->data->post_init = post_init;
2040 (*curr)->data->init_p = 1;
2041 return (*curr)->data;
2044 struct gdbarch_data *
2045 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2047 return gdbarch_data_register (pre_init, NULL);
2050 struct gdbarch_data *
2051 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2053 return gdbarch_data_register (NULL, post_init);
2056 /* Create/delete the gdbarch data vector. */
2059 alloc_gdbarch_data (struct gdbarch *gdbarch)
2061 gdb_assert (gdbarch->data == NULL);
2062 gdbarch->nr_data = gdbarch_data_registry.nr;
2063 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2066 /* Initialize the current value of the specified per-architecture
2070 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2071 struct gdbarch_data *data,
2074 gdb_assert (data->index < gdbarch->nr_data);
2075 gdb_assert (gdbarch->data[data->index] == NULL);
2076 gdb_assert (data->pre_init == NULL);
2077 gdbarch->data[data->index] = pointer;
2080 /* Return the current value of the specified per-architecture
2084 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2086 gdb_assert (data->index < gdbarch->nr_data);
2087 if (gdbarch->data[data->index] == NULL)
2089 /* The data-pointer isn't initialized, call init() to get a
2091 if (data->pre_init != NULL)
2092 /* Mid architecture creation: pass just the obstack, and not
2093 the entire architecture, as that way it isn't possible for
2094 pre-init code to refer to undefined architecture
2096 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2097 else if (gdbarch->initialized_p
2098 && data->post_init != NULL)
2099 /* Post architecture creation: pass the entire architecture
2100 (as all fields are valid), but be careful to also detect
2101 recursive references. */
2103 gdb_assert (data->init_p);
2105 gdbarch->data[data->index] = data->post_init (gdbarch);
2109 /* The architecture initialization hasn't completed - punt -
2110 hope that the caller knows what they are doing. Once
2111 deprecated_set_gdbarch_data has been initialized, this can be
2112 changed to an internal error. */
2114 gdb_assert (gdbarch->data[data->index] != NULL);
2116 return gdbarch->data[data->index];
2120 /* Keep a registry of the architectures known by GDB. */
2122 struct gdbarch_registration
2124 enum bfd_architecture bfd_architecture;
2125 gdbarch_init_ftype *init;
2126 gdbarch_dump_tdep_ftype *dump_tdep;
2127 struct gdbarch_list *arches;
2128 struct gdbarch_registration *next;
2131 static struct gdbarch_registration *gdbarch_registry = NULL;
2134 append_name (const char ***buf, int *nr, const char *name)
2136 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
2142 gdbarch_printable_names (void)
2144 /* Accumulate a list of names based on the registed list of
2147 const char **arches = NULL;
2148 struct gdbarch_registration *rego;
2150 for (rego = gdbarch_registry;
2154 const struct bfd_arch_info *ap;
2155 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2157 internal_error (__FILE__, __LINE__,
2158 _("gdbarch_architecture_names: multi-arch unknown"));
2161 append_name (&arches, &nr_arches, ap->printable_name);
2166 append_name (&arches, &nr_arches, NULL);
2172 gdbarch_register (enum bfd_architecture bfd_architecture,
2173 gdbarch_init_ftype *init,
2174 gdbarch_dump_tdep_ftype *dump_tdep)
2176 struct gdbarch_registration **curr;
2177 const struct bfd_arch_info *bfd_arch_info;
2179 /* Check that BFD recognizes this architecture */
2180 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2181 if (bfd_arch_info == NULL)
2183 internal_error (__FILE__, __LINE__,
2184 _("gdbarch: Attempt to register "
2185 "unknown architecture (%d)"),
2188 /* Check that we haven't seen this architecture before. */
2189 for (curr = &gdbarch_registry;
2191 curr = &(*curr)->next)
2193 if (bfd_architecture == (*curr)->bfd_architecture)
2194 internal_error (__FILE__, __LINE__,
2195 _("gdbarch: Duplicate registration "
2196 "of architecture (%s)"),
2197 bfd_arch_info->printable_name);
2201 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2202 bfd_arch_info->printable_name,
2203 host_address_to_string (init));
2205 (*curr) = XNEW (struct gdbarch_registration);
2206 (*curr)->bfd_architecture = bfd_architecture;
2207 (*curr)->init = init;
2208 (*curr)->dump_tdep = dump_tdep;
2209 (*curr)->arches = NULL;
2210 (*curr)->next = NULL;
2214 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2215 gdbarch_init_ftype *init)
2217 gdbarch_register (bfd_architecture, init, NULL);
2221 /* Look for an architecture using gdbarch_info. */
2223 struct gdbarch_list *
2224 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2225 const struct gdbarch_info *info)
2227 for (; arches != NULL; arches = arches->next)
2229 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2231 if (info->byte_order != arches->gdbarch->byte_order)
2233 if (info->osabi != arches->gdbarch->osabi)
2235 if (info->target_desc != arches->gdbarch->target_desc)
2243 /* Find an architecture that matches the specified INFO. Create a new
2244 architecture if needed. Return that new architecture. */
2247 gdbarch_find_by_info (struct gdbarch_info info)
2249 struct gdbarch *new_gdbarch;
2250 struct gdbarch_registration *rego;
2252 /* Fill in missing parts of the INFO struct using a number of
2253 sources: "set ..."; INFOabfd supplied; and the global
2255 gdbarch_info_fill (&info);
2257 /* Must have found some sort of architecture. */
2258 gdb_assert (info.bfd_arch_info != NULL);
2262 fprintf_unfiltered (gdb_stdlog,
2263 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2264 (info.bfd_arch_info != NULL
2265 ? info.bfd_arch_info->printable_name
2267 fprintf_unfiltered (gdb_stdlog,
2268 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2270 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2271 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2273 fprintf_unfiltered (gdb_stdlog,
2274 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2275 info.osabi, gdbarch_osabi_name (info.osabi));
2276 fprintf_unfiltered (gdb_stdlog,
2277 "gdbarch_find_by_info: info.abfd %s\n",
2278 host_address_to_string (info.abfd));
2279 fprintf_unfiltered (gdb_stdlog,
2280 "gdbarch_find_by_info: info.tdep_info %s\n",
2281 host_address_to_string (info.tdep_info));
2284 /* Find the tdep code that knows about this architecture. */
2285 for (rego = gdbarch_registry;
2288 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2293 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2294 "No matching architecture\n");
2298 /* Ask the tdep code for an architecture that matches "info". */
2299 new_gdbarch = rego->init (info, rego->arches);
2301 /* Did the tdep code like it? No. Reject the change and revert to
2302 the old architecture. */
2303 if (new_gdbarch == NULL)
2306 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2307 "Target rejected architecture\n");
2311 /* Is this a pre-existing architecture (as determined by already
2312 being initialized)? Move it to the front of the architecture
2313 list (keeping the list sorted Most Recently Used). */
2314 if (new_gdbarch->initialized_p)
2316 struct gdbarch_list **list;
2317 struct gdbarch_list *this;
2319 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2320 "Previous architecture %s (%s) selected\n",
2321 host_address_to_string (new_gdbarch),
2322 new_gdbarch->bfd_arch_info->printable_name);
2323 /* Find the existing arch in the list. */
2324 for (list = ®o->arches;
2325 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2326 list = &(*list)->next);
2327 /* It had better be in the list of architectures. */
2328 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2331 (*list) = this->next;
2332 /* Insert THIS at the front. */
2333 this->next = rego->arches;
2334 rego->arches = this;
2339 /* It's a new architecture. */
2341 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2342 "New architecture %s (%s) selected\n",
2343 host_address_to_string (new_gdbarch),
2344 new_gdbarch->bfd_arch_info->printable_name);
2346 /* Insert the new architecture into the front of the architecture
2347 list (keep the list sorted Most Recently Used). */
2349 struct gdbarch_list *this = XNEW (struct gdbarch_list);
2350 this->next = rego->arches;
2351 this->gdbarch = new_gdbarch;
2352 rego->arches = this;
2355 /* Check that the newly installed architecture is valid. Plug in
2356 any post init values. */
2357 new_gdbarch->dump_tdep = rego->dump_tdep;
2358 verify_gdbarch (new_gdbarch);
2359 new_gdbarch->initialized_p = 1;
2362 gdbarch_dump (new_gdbarch, gdb_stdlog);
2367 /* Make the specified architecture current. */
2370 set_target_gdbarch (struct gdbarch *new_gdbarch)
2372 gdb_assert (new_gdbarch != NULL);
2373 gdb_assert (new_gdbarch->initialized_p);
2374 current_inferior ()->gdbarch = new_gdbarch;
2375 observer_notify_architecture_changed (new_gdbarch);
2376 registers_changed ();
2379 /* Return the current inferior's arch. */
2382 target_gdbarch (void)
2384 return current_inferior ()->gdbarch;
2387 extern void _initialize_gdbarch (void);
2390 _initialize_gdbarch (void)
2392 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2393 Set architecture debugging."), _("\\
2394 Show architecture debugging."), _("\\
2395 When non-zero, architecture debugging is enabled."),
2398 &setdebuglist, &showdebuglist);
2404 #../move-if-change new-gdbarch.c gdbarch.c
2405 compare_new gdbarch.c