3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
6 # 2008 Free Software Foundation, Inc.
8 # This file is part of GDB.
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 3 of the License, or
13 # (at your option) any later version.
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
23 # Make certain that the script is not running in an internationalized
26 LC_ALL
=c
; export LC_ALL
34 echo "${file} missing? cp new-${file} ${file}" 1>&2
35 elif diff -u ${file} new-
${file}
37 echo "${file} unchanged" 1>&2
39 echo "${file} has changed? cp new-${file} ${file}" 1>&2
44 # Format of the input table
45 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
53 if test "${line}" = ""
56 elif test "${line}" = "#" -a "${comment}" = ""
59 elif expr "${line}" : "#" > /dev
/null
65 # The semantics of IFS varies between different SH's. Some
66 # treat ``::' as three fields while some treat it as just too.
67 # Work around this by eliminating ``::'' ....
68 line
="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"
70 OFS
="${IFS}" ; IFS
="[:]"
71 eval read ${read} <<EOF
76 if test -n "${garbage_at_eol}"
78 echo "Garbage at end-of-line in ${line}" 1>&2
83 # .... and then going back through each field and strip out those
84 # that ended up with just that space character.
87 if eval test \"\
${${r}}\" = \"\
\"
94 m
) staticdefault
="${predefault}" ;;
95 M
) staticdefault
="0" ;;
96 * ) test "${staticdefault}" || staticdefault
=0 ;;
101 case "${invalid_p}" in
103 if test -n "${predefault}"
105 #invalid_p="gdbarch->${function} == ${predefault}"
106 predicate
="gdbarch->${function} != ${predefault}"
107 elif class_is_variable_p
109 predicate
="gdbarch->${function} != 0"
110 elif class_is_function_p
112 predicate
="gdbarch->${function} != NULL"
116 echo "Predicate function ${function} with invalid_p." 1>&2
123 # PREDEFAULT is a valid fallback definition of MEMBER when
124 # multi-arch is not enabled. This ensures that the
125 # default value, when multi-arch is the same as the
126 # default value when not multi-arch. POSTDEFAULT is
127 # always a valid definition of MEMBER as this again
128 # ensures consistency.
130 if [ -n "${postdefault}" ]
132 fallbackdefault
="${postdefault}"
133 elif [ -n "${predefault}" ]
135 fallbackdefault
="${predefault}"
140 #NOT YET: See gdbarch.log for basic verification of
155 fallback_default_p
()
157 [ -n "${postdefault}" -a "x${invalid_p}" != "x0" ] \
158 ||
[ -n "${predefault}" -a "x${invalid_p}" = "x0" ]
161 class_is_variable_p
()
169 class_is_function_p
()
172 *f
* |
*F
* |
*m
* |
*M
* ) true
;;
177 class_is_multiarch_p
()
185 class_is_predicate_p
()
188 *F
* |
*V
* |
*M
* ) true
;;
202 # dump out/verify the doco
212 # F -> function + predicate
213 # hiding a function + predicate to test function validity
216 # V -> variable + predicate
217 # hiding a variable + predicate to test variables validity
219 # hiding something from the ``struct info'' object
220 # m -> multi-arch function
221 # hiding a multi-arch function (parameterised with the architecture)
222 # M -> multi-arch function + predicate
223 # hiding a multi-arch function + predicate to test function validity
227 # For functions, the return type; for variables, the data type
231 # For functions, the member function name; for variables, the
232 # variable name. Member function names are always prefixed with
233 # ``gdbarch_'' for name-space purity.
237 # The formal argument list. It is assumed that the formal
238 # argument list includes the actual name of each list element.
239 # A function with no arguments shall have ``void'' as the
240 # formal argument list.
244 # The list of actual arguments. The arguments specified shall
245 # match the FORMAL list given above. Functions with out
246 # arguments leave this blank.
250 # To help with the GDB startup a static gdbarch object is
251 # created. STATICDEFAULT is the value to insert into that
252 # static gdbarch object. Since this a static object only
253 # simple expressions can be used.
255 # If STATICDEFAULT is empty, zero is used.
259 # An initial value to assign to MEMBER of the freshly
260 # malloc()ed gdbarch object. After initialization, the
261 # freshly malloc()ed object is passed to the target
262 # architecture code for further updates.
264 # If PREDEFAULT is empty, zero is used.
266 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
267 # INVALID_P are specified, PREDEFAULT will be used as the
268 # default for the non- multi-arch target.
270 # A zero PREDEFAULT function will force the fallback to call
273 # Variable declarations can refer to ``gdbarch'' which will
274 # contain the current architecture. Care should be taken.
278 # A value to assign to MEMBER of the new gdbarch object should
279 # the target architecture code fail to change the PREDEFAULT
282 # If POSTDEFAULT is empty, no post update is performed.
284 # If both INVALID_P and POSTDEFAULT are non-empty then
285 # INVALID_P will be used to determine if MEMBER should be
286 # changed to POSTDEFAULT.
288 # If a non-empty POSTDEFAULT and a zero INVALID_P are
289 # specified, POSTDEFAULT will be used as the default for the
290 # non- multi-arch target (regardless of the value of
293 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
295 # Variable declarations can refer to ``gdbarch'' which
296 # will contain the current architecture. Care should be
301 # A predicate equation that validates MEMBER. Non-zero is
302 # returned if the code creating the new architecture failed to
303 # initialize MEMBER or the initialized the member is invalid.
304 # If POSTDEFAULT is non-empty then MEMBER will be updated to
305 # that value. If POSTDEFAULT is empty then internal_error()
308 # If INVALID_P is empty, a check that MEMBER is no longer
309 # equal to PREDEFAULT is used.
311 # The expression ``0'' disables the INVALID_P check making
312 # PREDEFAULT a legitimate value.
314 # See also PREDEFAULT and POSTDEFAULT.
318 # An optional expression that convers MEMBER to a value
319 # suitable for formatting using %s.
321 # If PRINT is empty, paddr_nz (for CORE_ADDR) or paddr_d
322 # (anything else) is used.
324 garbage_at_eol
) : ;;
326 # Catches stray fields.
329 echo "Bad field ${field}"
337 # See below (DOCO) for description of each field
339 i:const struct bfd_arch_info *:bfd_arch_info:::&bfd_default_arch_struct::::gdbarch_bfd_arch_info (gdbarch)->printable_name
341 i:int:byte_order:::BFD_ENDIAN_BIG
342 i:int:byte_order_for_code:::BFD_ENDIAN_BIG
344 i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
346 i:const struct target_desc *:target_desc:::::::paddr_d ((long) gdbarch->target_desc)
348 # The bit byte-order has to do just with numbering of bits in debugging symbols
349 # and such. Conceptually, it's quite separate from byte/word byte order.
350 v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
352 # Number of bits in a char or unsigned char for the target machine.
353 # Just like CHAR_BIT in <limits.h> but describes the target machine.
354 # v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
356 # Number of bits in a short or unsigned short for the target machine.
357 v:int:short_bit:::8 * sizeof (short):2*TARGET_CHAR_BIT::0
358 # Number of bits in an int or unsigned int for the target machine.
359 v:int:int_bit:::8 * sizeof (int):4*TARGET_CHAR_BIT::0
360 # Number of bits in a long or unsigned long for the target machine.
361 v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0
362 # Number of bits in a long long or unsigned long long for the target
364 v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0
366 # The ABI default bit-size and format for "float", "double", and "long
367 # double". These bit/format pairs should eventually be combined into
368 # a single object. For the moment, just initialize them as a pair.
369 # Each format describes both the big and little endian layouts (if
372 v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0
373 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format)
374 v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0
375 v:const struct floatformat **:double_format:::::floatformats_ieee_double::pformat (gdbarch->double_format)
376 v:int:long_double_bit:::8 * sizeof (long double):8*TARGET_CHAR_BIT::0
377 v:const struct floatformat **:long_double_format:::::floatformats_ieee_double::pformat (gdbarch->long_double_format)
379 # For most targets, a pointer on the target and its representation as an
380 # address in GDB have the same size and "look the same". For such a
381 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
382 # / addr_bit will be set from it.
384 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
385 # also need to set gdbarch_pointer_to_address and gdbarch_address_to_pointer
388 # ptr_bit is the size of a pointer on the target
389 v:int:ptr_bit:::8 * sizeof (void*):gdbarch->int_bit::0
390 # addr_bit is the size of a target address as represented in gdb
391 v:int:addr_bit:::8 * sizeof (void*):0:gdbarch_ptr_bit (gdbarch):
393 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
394 v:int:char_signed:::1:-1:1
396 F:CORE_ADDR:read_pc:struct regcache *regcache:regcache
397 F:void:write_pc:struct regcache *regcache, CORE_ADDR val:regcache, val
398 # Function for getting target's idea of a frame pointer. FIXME: GDB's
399 # whole scheme for dealing with "frames" and "frame pointers" needs a
401 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
403 M:void:pseudo_register_read:struct regcache *regcache, int cookednum, gdb_byte *buf:regcache, cookednum, buf
404 M:void:pseudo_register_write:struct regcache *regcache, int cookednum, const gdb_byte *buf:regcache, cookednum, buf
406 v:int:num_regs:::0:-1
407 # This macro gives the number of pseudo-registers that live in the
408 # register namespace but do not get fetched or stored on the target.
409 # These pseudo-registers may be aliases for other registers,
410 # combinations of other registers, or they may be computed by GDB.
411 v:int:num_pseudo_regs:::0:0::0
413 # GDB's standard (or well known) register numbers. These can map onto
414 # a real register or a pseudo (computed) register or not be defined at
416 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
417 v:int:sp_regnum:::-1:-1::0
418 v:int:pc_regnum:::-1:-1::0
419 v:int:ps_regnum:::-1:-1::0
420 v:int:fp0_regnum:::0:-1::0
421 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
422 m:int:stab_reg_to_regnum:int stab_regnr:stab_regnr::no_op_reg_to_regnum::0
423 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
424 m:int:ecoff_reg_to_regnum:int ecoff_regnr:ecoff_regnr::no_op_reg_to_regnum::0
425 # Convert from an sdb register number to an internal gdb register number.
426 m:int:sdb_reg_to_regnum:int sdb_regnr:sdb_regnr::no_op_reg_to_regnum::0
427 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
428 m:int:dwarf2_reg_to_regnum:int dwarf2_regnr:dwarf2_regnr::no_op_reg_to_regnum::0
429 m:const char *:register_name:int regnr:regnr::0
431 # Return the type of a register specified by the architecture. Only
432 # the register cache should call this function directly; others should
433 # use "register_type".
434 M:struct type *:register_type:int reg_nr:reg_nr
436 # See gdbint.texinfo, and PUSH_DUMMY_CALL.
437 M:struct frame_id:dummy_id:struct frame_info *this_frame:this_frame
438 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
439 # deprecated_fp_regnum.
440 v:int:deprecated_fp_regnum:::-1:-1::0
442 # See gdbint.texinfo. See infcall.c.
443 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
444 v:int:call_dummy_location::::AT_ENTRY_POINT::0
445 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
447 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
448 M:void:print_float_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
449 M:void:print_vector_info:struct ui_file *file, struct frame_info *frame, const char *args:file, frame, args
450 # MAP a GDB RAW register number onto a simulator register number. See
451 # also include/...-sim.h.
452 m:int:register_sim_regno:int reg_nr:reg_nr::legacy_register_sim_regno::0
453 m:int:cannot_fetch_register:int regnum:regnum::cannot_register_not::0
454 m:int:cannot_store_register:int regnum:regnum::cannot_register_not::0
455 # setjmp/longjmp support.
456 F:int:get_longjmp_target:struct frame_info *frame, CORE_ADDR *pc:frame, pc
458 v:int:believe_pcc_promotion:::::::
460 m:int:convert_register_p:int regnum, struct type *type:regnum, type:0:generic_convert_register_p::0
461 f:void:register_to_value:struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf:frame, regnum, type, buf:0
462 f:void:value_to_register:struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf:frame, regnum, type, buf:0
463 # Construct a value representing the contents of register REGNUM in
464 # frame FRAME, interpreted as type TYPE. The routine needs to
465 # allocate and return a struct value with all value attributes
466 # (but not the value contents) filled in.
467 f:struct value *:value_from_register:struct type *type, int regnum, struct frame_info *frame:type, regnum, frame::default_value_from_register::0
469 f:CORE_ADDR:pointer_to_address:struct type *type, const gdb_byte *buf:type, buf::unsigned_pointer_to_address::0
470 f:void:address_to_pointer:struct type *type, gdb_byte *buf, CORE_ADDR addr:type, buf, addr::unsigned_address_to_pointer::0
471 M:CORE_ADDR:integer_to_address:struct type *type, const gdb_byte *buf:type, buf
473 # Return the return-value convention that will be used by FUNCTYPE
474 # to return a value of type VALTYPE. FUNCTYPE may be NULL in which
475 # case the return convention is computed based only on VALTYPE.
477 # If READBUF is not NULL, extract the return value and save it in this buffer.
479 # If WRITEBUF is not NULL, it contains a return value which will be
480 # stored into the appropriate register. This can be used when we want
481 # to force the value returned by a function (see the "return" command
483 M:enum return_value_convention:return_value:struct type *functype, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf:functype, valtype, regcache, readbuf, writebuf
485 m:CORE_ADDR:skip_prologue:CORE_ADDR ip:ip:0:0
486 M:CORE_ADDR:skip_main_prologue:CORE_ADDR ip:ip
487 f:int:inner_than:CORE_ADDR lhs, CORE_ADDR rhs:lhs, rhs:0:0
488 m:const gdb_byte *:breakpoint_from_pc:CORE_ADDR *pcptr, int *lenptr:pcptr, lenptr::0:
489 M:CORE_ADDR:adjust_breakpoint_address:CORE_ADDR bpaddr:bpaddr
490 m:int:memory_insert_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_insert_breakpoint::0
491 m:int:memory_remove_breakpoint:struct bp_target_info *bp_tgt:bp_tgt:0:default_memory_remove_breakpoint::0
492 v:CORE_ADDR:decr_pc_after_break:::0:::0
494 # A function can be addressed by either it's "pointer" (possibly a
495 # descriptor address) or "entry point" (first executable instruction).
496 # The method "convert_from_func_ptr_addr" converting the former to the
497 # latter. gdbarch_deprecated_function_start_offset is being used to implement
498 # a simplified subset of that functionality - the function's address
499 # corresponds to the "function pointer" and the function's start
500 # corresponds to the "function entry point" - and hence is redundant.
502 v:CORE_ADDR:deprecated_function_start_offset:::0:::0
504 # Return the remote protocol register number associated with this
505 # register. Normally the identity mapping.
506 m:int:remote_register_number:int regno:regno::default_remote_register_number::0
508 # Fetch the target specific address used to represent a load module.
509 F:CORE_ADDR:fetch_tls_load_module_address:struct objfile *objfile:objfile
511 v:CORE_ADDR:frame_args_skip:::0:::0
512 M:CORE_ADDR:unwind_pc:struct frame_info *next_frame:next_frame
513 M:CORE_ADDR:unwind_sp:struct frame_info *next_frame:next_frame
514 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
515 # frame-base. Enable frame-base before frame-unwind.
516 F:int:frame_num_args:struct frame_info *frame:frame
518 M:CORE_ADDR:frame_align:CORE_ADDR address:address
519 m:int:stabs_argument_has_addr:struct type *type:type::default_stabs_argument_has_addr::0
520 v:int:frame_red_zone_size
522 m:CORE_ADDR:convert_from_func_ptr_addr:CORE_ADDR addr, struct target_ops *targ:addr, targ::convert_from_func_ptr_addr_identity::0
523 # On some machines there are bits in addresses which are not really
524 # part of the address, but are used by the kernel, the hardware, etc.
525 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
526 # we get a "real" address such as one would find in a symbol table.
527 # This is used only for addresses of instructions, and even then I'm
528 # not sure it's used in all contexts. It exists to deal with there
529 # being a few stray bits in the PC which would mislead us, not as some
530 # sort of generic thing to handle alignment or segmentation (it's
531 # possible it should be in TARGET_READ_PC instead).
532 f:CORE_ADDR:addr_bits_remove:CORE_ADDR addr:addr::core_addr_identity::0
533 # It is not at all clear why gdbarch_smash_text_address is not folded into
534 # gdbarch_addr_bits_remove.
535 f:CORE_ADDR:smash_text_address:CORE_ADDR addr:addr::core_addr_identity::0
537 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
538 # indicates if the target needs software single step. An ISA method to
541 # FIXME/cagney/2001-01-18: This should be replaced with something that inserts
542 # breakpoints using the breakpoint system instead of blatting memory directly
545 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
546 # target can single step. If not, then implement single step using breakpoints.
548 # A return value of 1 means that the software_single_step breakpoints
549 # were inserted; 0 means they were not.
550 F:int:software_single_step:struct frame_info *frame:frame
552 # Return non-zero if the processor is executing a delay slot and a
553 # further single-step is needed before the instruction finishes.
554 M:int:single_step_through_delay:struct frame_info *frame:frame
555 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
556 # disassembler. Perhaps objdump can handle it?
557 f:int:print_insn:bfd_vma vma, struct disassemble_info *info:vma, info::0:
558 f:CORE_ADDR:skip_trampoline_code:struct frame_info *frame, CORE_ADDR pc:frame, pc::generic_skip_trampoline_code::0
561 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
562 # evaluates non-zero, this is the address where the debugger will place
563 # a step-resume breakpoint to get us past the dynamic linker.
564 m:CORE_ADDR:skip_solib_resolver:CORE_ADDR pc:pc::generic_skip_solib_resolver::0
565 # Some systems also have trampoline code for returning from shared libs.
566 f:int:in_solib_return_trampoline:CORE_ADDR pc, char *name:pc, name::generic_in_solib_return_trampoline::0
568 # A target might have problems with watchpoints as soon as the stack
569 # frame of the current function has been destroyed. This mostly happens
570 # as the first action in a funtion's epilogue. in_function_epilogue_p()
571 # is defined to return a non-zero value if either the given addr is one
572 # instruction after the stack destroying instruction up to the trailing
573 # return instruction or if we can figure out that the stack frame has
574 # already been invalidated regardless of the value of addr. Targets
575 # which don't suffer from that problem could just let this functionality
577 m:int:in_function_epilogue_p:CORE_ADDR addr:addr:0:generic_in_function_epilogue_p::0
578 # Given a vector of command-line arguments, return a newly allocated
579 # string which, when passed to the create_inferior function, will be
580 # parsed (on Unix systems, by the shell) to yield the same vector.
581 # This function should call error() if the argument vector is not
582 # representable for this target or if this target does not support
583 # command-line arguments.
584 # ARGC is the number of elements in the vector.
585 # ARGV is an array of strings, one per argument.
586 m:char *:construct_inferior_arguments:int argc, char **argv:argc, argv::construct_inferior_arguments::0
587 f:void:elf_make_msymbol_special:asymbol *sym, struct minimal_symbol *msym:sym, msym::default_elf_make_msymbol_special::0
588 f:void:coff_make_msymbol_special:int val, struct minimal_symbol *msym:val, msym::default_coff_make_msymbol_special::0
589 v:const char *:name_of_malloc:::"malloc":"malloc"::0:gdbarch->name_of_malloc
590 v:int:cannot_step_breakpoint:::0:0::0
591 v:int:have_nonsteppable_watchpoint:::0:0::0
592 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
593 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
594 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
595 # Is a register in a group
596 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
597 # Fetch the pointer to the ith function argument.
598 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
600 # Return the appropriate register set for a core file section with
601 # name SECT_NAME and size SECT_SIZE.
602 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
604 # Supported register notes in a core file.
605 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
607 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
608 # core file into buffer READBUF with length LEN.
609 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
611 # If the elements of C++ vtables are in-place function descriptors rather
612 # than normal function pointers (which may point to code or a descriptor),
614 v:int:vtable_function_descriptors:::0:0::0
616 # Set if the least significant bit of the delta is used instead of the least
617 # significant bit of the pfn for pointers to virtual member functions.
618 v:int:vbit_in_delta:::0:0::0
620 # Advance PC to next instruction in order to skip a permanent breakpoint.
621 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
623 # The maximum length of an instruction on this architecture.
624 V:ULONGEST:max_insn_length:::0:0
626 # Copy the instruction at FROM to TO, and make any adjustments
627 # necessary to single-step it at that address.
629 # REGS holds the state the thread's registers will have before
630 # executing the copied instruction; the PC in REGS will refer to FROM,
631 # not the copy at TO. The caller should update it to point at TO later.
633 # Return a pointer to data of the architecture's choice to be passed
634 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
635 # the instruction's effects have been completely simulated, with the
636 # resulting state written back to REGS.
638 # For a general explanation of displaced stepping and how GDB uses it,
639 # see the comments in infrun.c.
641 # The TO area is only guaranteed to have space for
642 # gdbarch_max_insn_length (arch) bytes, so this function must not
643 # write more bytes than that to that area.
645 # If you do not provide this function, GDB assumes that the
646 # architecture does not support displaced stepping.
648 # If your architecture doesn't need to adjust instructions before
649 # single-stepping them, consider using simple_displaced_step_copy_insn
651 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
653 # Fix up the state resulting from successfully single-stepping a
654 # displaced instruction, to give the result we would have gotten from
655 # stepping the instruction in its original location.
657 # REGS is the register state resulting from single-stepping the
658 # displaced instruction.
660 # CLOSURE is the result from the matching call to
661 # gdbarch_displaced_step_copy_insn.
663 # If you provide gdbarch_displaced_step_copy_insn.but not this
664 # function, then GDB assumes that no fixup is needed after
665 # single-stepping the instruction.
667 # For a general explanation of displaced stepping and how GDB uses it,
668 # see the comments in infrun.c.
669 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
671 # Free a closure returned by gdbarch_displaced_step_copy_insn.
673 # If you provide gdbarch_displaced_step_copy_insn, you must provide
674 # this function as well.
676 # If your architecture uses closures that don't need to be freed, then
677 # you can use simple_displaced_step_free_closure here.
679 # For a general explanation of displaced stepping and how GDB uses it,
680 # see the comments in infrun.c.
681 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
683 # Return the address of an appropriate place to put displaced
684 # instructions while we step over them. There need only be one such
685 # place, since we're only stepping one thread over a breakpoint at a
688 # For a general explanation of displaced stepping and how GDB uses it,
689 # see the comments in infrun.c.
690 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
692 # Refresh overlay mapped state for section OSECT.
693 F:void:overlay_update:struct obj_section *osect:osect
695 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
697 # Handle special encoding of static variables in stabs debug info.
698 F:char *:static_transform_name:char *name:name
699 # Set if the address in N_SO or N_FUN stabs may be zero.
700 v:int:sofun_address_maybe_missing:::0:0::0
702 # Signal translation: translate inferior's signal (host's) number into
703 # GDB's representation.
704 m:enum target_signal:target_signal_from_host:int signo:signo::default_target_signal_from_host::0
705 # Signal translation: translate GDB's signal number into inferior's host
707 m:int:target_signal_to_host:enum target_signal ts:ts::default_target_signal_to_host::0
709 # Record architecture-specific information from the symbol table.
710 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
717 exec > new-gdbarch.log
718 function_list |
while do_read
721 ${class} ${returntype} ${function} ($formal)
725 eval echo \"\ \ \ \
${r}=\
${${r}}\"
727 if class_is_predicate_p
&& fallback_default_p
729 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
733 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
735 echo "Error: postdefault is useless when invalid_p=0" 1>&2
739 if class_is_multiarch_p
741 if class_is_predicate_p
; then :
742 elif test "x${predefault}" = "x"
744 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
753 compare_new gdbarch.log
759 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
761 /* Dynamic architecture support for GDB, the GNU debugger.
763 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
764 Free Software Foundation, Inc.
766 This file is part of GDB.
768 This program is free software; you can redistribute it and/or modify
769 it under the terms of the GNU General Public License as published by
770 the Free Software Foundation; either version 3 of the License, or
771 (at your option) any later version.
773 This program is distributed in the hope that it will be useful,
774 but WITHOUT ANY WARRANTY; without even the implied warranty of
775 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
776 GNU General Public License for more details.
778 You should have received a copy of the GNU General Public License
779 along with this program. If not, see <http://www.gnu.org/licenses/>. */
781 /* This file was created with the aid of \`\`gdbarch.sh''.
783 The Bourne shell script \`\`gdbarch.sh'' creates the files
784 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
785 against the existing \`\`gdbarch.[hc]''. Any differences found
788 If editing this file, please also run gdbarch.sh and merge any
789 changes into that script. Conversely, when making sweeping changes
790 to this file, modifying gdbarch.sh and using its output may prove
812 struct minimal_symbol;
816 struct disassemble_info;
819 struct bp_target_info;
821 struct displaced_step_closure;
822 struct core_regset_section;
824 extern struct gdbarch *current_gdbarch;
825 extern struct gdbarch *target_gdbarch;
831 printf "/* The following are pre-initialized by GDBARCH. */\n"
832 function_list |
while do_read
837 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
838 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
845 printf "/* The following are initialized by the target dependent code. */\n"
846 function_list |
while do_read
848 if [ -n "${comment}" ]
850 echo "${comment}" |
sed \
856 if class_is_predicate_p
859 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
861 if class_is_variable_p
864 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
865 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
867 if class_is_function_p
870 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
872 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
873 elif class_is_multiarch_p
875 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
877 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
879 if [ "x${formal}" = "xvoid" ]
881 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
883 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
885 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
892 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
895 /* Mechanism for co-ordinating the selection of a specific
898 GDB targets (*-tdep.c) can register an interest in a specific
899 architecture. Other GDB components can register a need to maintain
900 per-architecture data.
902 The mechanisms below ensures that there is only a loose connection
903 between the set-architecture command and the various GDB
904 components. Each component can independently register their need
905 to maintain architecture specific data with gdbarch.
909 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
912 The more traditional mega-struct containing architecture specific
913 data for all the various GDB components was also considered. Since
914 GDB is built from a variable number of (fairly independent)
915 components it was determined that the global aproach was not
919 /* Register a new architectural family with GDB.
921 Register support for the specified ARCHITECTURE with GDB. When
922 gdbarch determines that the specified architecture has been
923 selected, the corresponding INIT function is called.
927 The INIT function takes two parameters: INFO which contains the
928 information available to gdbarch about the (possibly new)
929 architecture; ARCHES which is a list of the previously created
930 \`\`struct gdbarch'' for this architecture.
932 The INFO parameter is, as far as possible, be pre-initialized with
933 information obtained from INFO.ABFD or the global defaults.
935 The ARCHES parameter is a linked list (sorted most recently used)
936 of all the previously created architures for this architecture
937 family. The (possibly NULL) ARCHES->gdbarch can used to access
938 values from the previously selected architecture for this
939 architecture family. The global \`\`current_gdbarch'' shall not be
942 The INIT function shall return any of: NULL - indicating that it
943 doesn't recognize the selected architecture; an existing \`\`struct
944 gdbarch'' from the ARCHES list - indicating that the new
945 architecture is just a synonym for an earlier architecture (see
946 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
947 - that describes the selected architecture (see gdbarch_alloc()).
949 The DUMP_TDEP function shall print out all target specific values.
950 Care should be taken to ensure that the function works in both the
951 multi-arch and non- multi-arch cases. */
955 struct gdbarch *gdbarch;
956 struct gdbarch_list *next;
961 /* Use default: NULL (ZERO). */
962 const struct bfd_arch_info *bfd_arch_info;
964 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
967 int byte_order_for_code;
969 /* Use default: NULL (ZERO). */
972 /* Use default: NULL (ZERO). */
973 struct gdbarch_tdep_info *tdep_info;
975 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
976 enum gdb_osabi osabi;
978 /* Use default: NULL (ZERO). */
979 const struct target_desc *target_desc;
982 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
983 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
985 /* DEPRECATED - use gdbarch_register() */
986 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
988 extern void gdbarch_register (enum bfd_architecture architecture,
989 gdbarch_init_ftype *,
990 gdbarch_dump_tdep_ftype *);
993 /* Return a freshly allocated, NULL terminated, array of the valid
994 architecture names. Since architectures are registered during the
995 _initialize phase this function only returns useful information
996 once initialization has been completed. */
998 extern const char **gdbarch_printable_names (void);
1001 /* Helper function. Search the list of ARCHES for a GDBARCH that
1002 matches the information provided by INFO. */
1004 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1007 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1008 basic initialization using values obtained from the INFO and TDEP
1009 parameters. set_gdbarch_*() functions are called to complete the
1010 initialization of the object. */
1012 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1015 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1016 It is assumed that the caller freeds the \`\`struct
1019 extern void gdbarch_free (struct gdbarch *);
1022 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1023 obstack. The memory is freed when the corresponding architecture
1026 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1027 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1028 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1031 /* Helper function. Force an update of the current architecture.
1033 The actual architecture selected is determined by INFO, \`\`(gdb) set
1034 architecture'' et.al., the existing architecture and BFD's default
1035 architecture. INFO should be initialized to zero and then selected
1036 fields should be updated.
1038 Returns non-zero if the update succeeds */
1040 extern int gdbarch_update_p (struct gdbarch_info info);
1043 /* Helper function. Find an architecture matching info.
1045 INFO should be initialized using gdbarch_info_init, relevant fields
1046 set, and then finished using gdbarch_info_fill.
1048 Returns the corresponding architecture, or NULL if no matching
1049 architecture was found. "current_gdbarch" is not updated. */
1051 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1054 /* Helper function. Set the global "current_gdbarch" to "gdbarch".
1056 FIXME: kettenis/20031124: Of the functions that follow, only
1057 gdbarch_from_bfd is supposed to survive. The others will
1058 dissappear since in the future GDB will (hopefully) be truly
1059 multi-arch. However, for now we're still stuck with the concept of
1060 a single active architecture. */
1062 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1065 /* Register per-architecture data-pointer.
1067 Reserve space for a per-architecture data-pointer. An identifier
1068 for the reserved data-pointer is returned. That identifer should
1069 be saved in a local static variable.
1071 Memory for the per-architecture data shall be allocated using
1072 gdbarch_obstack_zalloc. That memory will be deleted when the
1073 corresponding architecture object is deleted.
1075 When a previously created architecture is re-selected, the
1076 per-architecture data-pointer for that previous architecture is
1077 restored. INIT() is not re-called.
1079 Multiple registrarants for any architecture are allowed (and
1080 strongly encouraged). */
1082 struct gdbarch_data;
1084 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1085 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1086 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1087 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1088 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1089 struct gdbarch_data *data,
1092 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1095 /* Set the dynamic target-system-dependent parameters (architecture,
1096 byte-order, ...) using information found in the BFD */
1098 extern void set_gdbarch_from_file (bfd *);
1101 /* Initialize the current architecture to the "first" one we find on
1104 extern void initialize_current_architecture (void);
1106 /* gdbarch trace variable */
1107 extern int gdbarch_debug;
1109 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1114 #../move-if-change new-gdbarch.h gdbarch.h
1115 compare_new gdbarch.h
1122 exec > new-gdbarch.c
1127 #include "arch-utils.h"
1130 #include "inferior.h"
1133 #include "floatformat.h"
1135 #include "gdb_assert.h"
1136 #include "gdb_string.h"
1137 #include "reggroups.h"
1139 #include "gdb_obstack.h"
1140 #include "observer.h"
1141 #include "regcache.h"
1143 /* Static function declarations */
1145 static void alloc_gdbarch_data (struct gdbarch *);
1147 /* Non-zero if we want to trace architecture code. */
1149 #ifndef GDBARCH_DEBUG
1150 #define GDBARCH_DEBUG 0
1152 int gdbarch_debug = GDBARCH_DEBUG;
1154 show_gdbarch_debug (struct ui_file *file, int from_tty,
1155 struct cmd_list_element *c, const char *value)
1157 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1161 pformat (const struct floatformat **format)
1166 /* Just print out one of them - this is only for diagnostics. */
1167 return format[0]->name;
1172 # gdbarch open the gdbarch object
1174 printf "/* Maintain the struct gdbarch object */\n"
1176 printf "struct gdbarch\n"
1178 printf " /* Has this architecture been fully initialized? */\n"
1179 printf " int initialized_p;\n"
1181 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1182 printf " struct obstack *obstack;\n"
1184 printf " /* basic architectural information */\n"
1185 function_list |
while do_read
1189 printf " ${returntype} ${function};\n"
1193 printf " /* target specific vector. */\n"
1194 printf " struct gdbarch_tdep *tdep;\n"
1195 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1197 printf " /* per-architecture data-pointers */\n"
1198 printf " unsigned nr_data;\n"
1199 printf " void **data;\n"
1201 printf " /* per-architecture swap-regions */\n"
1202 printf " struct gdbarch_swap *swap;\n"
1205 /* Multi-arch values.
1207 When extending this structure you must:
1209 Add the field below.
1211 Declare set/get functions and define the corresponding
1214 gdbarch_alloc(): If zero/NULL is not a suitable default,
1215 initialize the new field.
1217 verify_gdbarch(): Confirm that the target updated the field
1220 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1223 \`\`startup_gdbarch()'': Append an initial value to the static
1224 variable (base values on the host's c-type system).
1226 get_gdbarch(): Implement the set/get functions (probably using
1227 the macro's as shortcuts).
1232 function_list |
while do_read
1234 if class_is_variable_p
1236 printf " ${returntype} ${function};\n"
1237 elif class_is_function_p
1239 printf " gdbarch_${function}_ftype *${function};\n"
1244 # A pre-initialized vector
1248 /* The default architecture uses host values (for want of a better
1252 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1254 printf "struct gdbarch startup_gdbarch =\n"
1256 printf " 1, /* Always initialized. */\n"
1257 printf " NULL, /* The obstack. */\n"
1258 printf " /* basic architecture information */\n"
1259 function_list |
while do_read
1263 printf " ${staticdefault}, /* ${function} */\n"
1267 /* target specific vector and its dump routine */
1269 /*per-architecture data-pointers and swap regions */
1271 /* Multi-arch values */
1273 function_list |
while do_read
1275 if class_is_function_p || class_is_variable_p
1277 printf " ${staticdefault}, /* ${function} */\n"
1281 /* startup_gdbarch() */
1284 struct gdbarch *current_gdbarch = &startup_gdbarch;
1285 struct gdbarch *target_gdbarch = &startup_gdbarch;
1288 # Create a new gdbarch struct
1291 /* Create a new \`\`struct gdbarch'' based on information provided by
1292 \`\`struct gdbarch_info''. */
1297 gdbarch_alloc (const struct gdbarch_info *info,
1298 struct gdbarch_tdep *tdep)
1300 struct gdbarch *gdbarch;
1302 /* Create an obstack for allocating all the per-architecture memory,
1303 then use that to allocate the architecture vector. */
1304 struct obstack *obstack = XMALLOC (struct obstack);
1305 obstack_init (obstack);
1306 gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1307 memset (gdbarch, 0, sizeof (*gdbarch));
1308 gdbarch->obstack = obstack;
1310 alloc_gdbarch_data (gdbarch);
1312 gdbarch->tdep = tdep;
1315 function_list |
while do_read
1319 printf " gdbarch->${function} = info->${function};\n"
1323 printf " /* Force the explicit initialization of these. */\n"
1324 function_list |
while do_read
1326 if class_is_function_p || class_is_variable_p
1328 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1330 printf " gdbarch->${function} = ${predefault};\n"
1335 /* gdbarch_alloc() */
1341 # Free a gdbarch struct.
1345 /* Allocate extra space using the per-architecture obstack. */
1348 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1350 void *data = obstack_alloc (arch->obstack, size);
1351 memset (data, 0, size);
1356 /* Free a gdbarch struct. This should never happen in normal
1357 operation --- once you've created a gdbarch, you keep it around.
1358 However, if an architecture's init function encounters an error
1359 building the structure, it may need to clean up a partially
1360 constructed gdbarch. */
1363 gdbarch_free (struct gdbarch *arch)
1365 struct obstack *obstack;
1366 gdb_assert (arch != NULL);
1367 gdb_assert (!arch->initialized_p);
1368 obstack = arch->obstack;
1369 obstack_free (obstack, 0); /* Includes the ARCH. */
1374 # verify a new architecture
1378 /* Ensure that all values in a GDBARCH are reasonable. */
1381 verify_gdbarch (struct gdbarch *gdbarch)
1383 struct ui_file *log;
1384 struct cleanup *cleanups;
1387 log = mem_fileopen ();
1388 cleanups = make_cleanup_ui_file_delete (log);
1390 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1391 fprintf_unfiltered (log, "\n\tbyte-order");
1392 if (gdbarch->bfd_arch_info == NULL)
1393 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1394 /* Check those that need to be defined for the given multi-arch level. */
1396 function_list |
while do_read
1398 if class_is_function_p || class_is_variable_p
1400 if [ "x${invalid_p}" = "x0" ]
1402 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1403 elif class_is_predicate_p
1405 printf " /* Skip verify of ${function}, has predicate */\n"
1406 # FIXME: See do_read for potential simplification
1407 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1409 printf " if (${invalid_p})\n"
1410 printf " gdbarch->${function} = ${postdefault};\n"
1411 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1413 printf " if (gdbarch->${function} == ${predefault})\n"
1414 printf " gdbarch->${function} = ${postdefault};\n"
1415 elif [ -n "${postdefault}" ]
1417 printf " if (gdbarch->${function} == 0)\n"
1418 printf " gdbarch->${function} = ${postdefault};\n"
1419 elif [ -n "${invalid_p}" ]
1421 printf " if (${invalid_p})\n"
1422 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1423 elif [ -n "${predefault}" ]
1425 printf " if (gdbarch->${function} == ${predefault})\n"
1426 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1431 buf = ui_file_xstrdup (log, &dummy);
1432 make_cleanup (xfree, buf);
1433 if (strlen (buf) > 0)
1434 internal_error (__FILE__, __LINE__,
1435 _("verify_gdbarch: the following are invalid ...%s"),
1437 do_cleanups (cleanups);
1441 # dump the structure
1445 /* Print out the details of the current architecture. */
1448 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1450 const char *gdb_nm_file = "<not-defined>";
1451 #if defined (GDB_NM_FILE)
1452 gdb_nm_file = GDB_NM_FILE;
1454 fprintf_unfiltered (file,
1455 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1458 function_list |
sort -t: -k 3 |
while do_read
1460 # First the predicate
1461 if class_is_predicate_p
1463 printf " fprintf_unfiltered (file,\n"
1464 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1465 printf " gdbarch_${function}_p (gdbarch));\n"
1467 # Print the corresponding value.
1468 if class_is_function_p
1470 printf " fprintf_unfiltered (file,\n"
1471 printf " \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1472 printf " (long) gdbarch->${function});\n"
1475 case "${print}:${returntype}" in
1478 print
="paddr_nz (gdbarch->${function})"
1482 print
="paddr_d (gdbarch->${function})"
1488 printf " fprintf_unfiltered (file,\n"
1489 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1490 printf " ${print});\n"
1494 if (gdbarch->dump_tdep != NULL)
1495 gdbarch->dump_tdep (gdbarch, file);
1503 struct gdbarch_tdep *
1504 gdbarch_tdep (struct gdbarch *gdbarch)
1506 if (gdbarch_debug >= 2)
1507 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1508 return gdbarch->tdep;
1512 function_list |
while do_read
1514 if class_is_predicate_p
1518 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1520 printf " gdb_assert (gdbarch != NULL);\n"
1521 printf " return ${predicate};\n"
1524 if class_is_function_p
1527 printf "${returntype}\n"
1528 if [ "x${formal}" = "xvoid" ]
1530 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1532 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1535 printf " gdb_assert (gdbarch != NULL);\n"
1536 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1537 if class_is_predicate_p
&& test -n "${predefault}"
1539 # Allow a call to a function with a predicate.
1540 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1542 printf " if (gdbarch_debug >= 2)\n"
1543 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1544 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1546 if class_is_multiarch_p
1553 if class_is_multiarch_p
1555 params
="gdbarch, ${actual}"
1560 if [ "x${returntype}" = "xvoid" ]
1562 printf " gdbarch->${function} (${params});\n"
1564 printf " return gdbarch->${function} (${params});\n"
1569 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1570 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1572 printf " gdbarch->${function} = ${function};\n"
1574 elif class_is_variable_p
1577 printf "${returntype}\n"
1578 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1580 printf " gdb_assert (gdbarch != NULL);\n"
1581 if [ "x${invalid_p}" = "x0" ]
1583 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1584 elif [ -n "${invalid_p}" ]
1586 printf " /* Check variable is valid. */\n"
1587 printf " gdb_assert (!(${invalid_p}));\n"
1588 elif [ -n "${predefault}" ]
1590 printf " /* Check variable changed from pre-default. */\n"
1591 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1593 printf " if (gdbarch_debug >= 2)\n"
1594 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1595 printf " return gdbarch->${function};\n"
1599 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1600 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1602 printf " gdbarch->${function} = ${function};\n"
1604 elif class_is_info_p
1607 printf "${returntype}\n"
1608 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1610 printf " gdb_assert (gdbarch != NULL);\n"
1611 printf " if (gdbarch_debug >= 2)\n"
1612 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1613 printf " return gdbarch->${function};\n"
1618 # All the trailing guff
1622 /* Keep a registry of per-architecture data-pointers required by GDB
1629 gdbarch_data_pre_init_ftype *pre_init;
1630 gdbarch_data_post_init_ftype *post_init;
1633 struct gdbarch_data_registration
1635 struct gdbarch_data *data;
1636 struct gdbarch_data_registration *next;
1639 struct gdbarch_data_registry
1642 struct gdbarch_data_registration *registrations;
1645 struct gdbarch_data_registry gdbarch_data_registry =
1650 static struct gdbarch_data *
1651 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1652 gdbarch_data_post_init_ftype *post_init)
1654 struct gdbarch_data_registration **curr;
1655 /* Append the new registraration. */
1656 for (curr = &gdbarch_data_registry.registrations;
1658 curr = &(*curr)->next);
1659 (*curr) = XMALLOC (struct gdbarch_data_registration);
1660 (*curr)->next = NULL;
1661 (*curr)->data = XMALLOC (struct gdbarch_data);
1662 (*curr)->data->index = gdbarch_data_registry.nr++;
1663 (*curr)->data->pre_init = pre_init;
1664 (*curr)->data->post_init = post_init;
1665 (*curr)->data->init_p = 1;
1666 return (*curr)->data;
1669 struct gdbarch_data *
1670 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1672 return gdbarch_data_register (pre_init, NULL);
1675 struct gdbarch_data *
1676 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1678 return gdbarch_data_register (NULL, post_init);
1681 /* Create/delete the gdbarch data vector. */
1684 alloc_gdbarch_data (struct gdbarch *gdbarch)
1686 gdb_assert (gdbarch->data == NULL);
1687 gdbarch->nr_data = gdbarch_data_registry.nr;
1688 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1691 /* Initialize the current value of the specified per-architecture
1695 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1696 struct gdbarch_data *data,
1699 gdb_assert (data->index < gdbarch->nr_data);
1700 gdb_assert (gdbarch->data[data->index] == NULL);
1701 gdb_assert (data->pre_init == NULL);
1702 gdbarch->data[data->index] = pointer;
1705 /* Return the current value of the specified per-architecture
1709 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1711 gdb_assert (data->index < gdbarch->nr_data);
1712 if (gdbarch->data[data->index] == NULL)
1714 /* The data-pointer isn't initialized, call init() to get a
1716 if (data->pre_init != NULL)
1717 /* Mid architecture creation: pass just the obstack, and not
1718 the entire architecture, as that way it isn't possible for
1719 pre-init code to refer to undefined architecture
1721 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1722 else if (gdbarch->initialized_p
1723 && data->post_init != NULL)
1724 /* Post architecture creation: pass the entire architecture
1725 (as all fields are valid), but be careful to also detect
1726 recursive references. */
1728 gdb_assert (data->init_p);
1730 gdbarch->data[data->index] = data->post_init (gdbarch);
1734 /* The architecture initialization hasn't completed - punt -
1735 hope that the caller knows what they are doing. Once
1736 deprecated_set_gdbarch_data has been initialized, this can be
1737 changed to an internal error. */
1739 gdb_assert (gdbarch->data[data->index] != NULL);
1741 return gdbarch->data[data->index];
1745 /* Keep a registry of the architectures known by GDB. */
1747 struct gdbarch_registration
1749 enum bfd_architecture bfd_architecture;
1750 gdbarch_init_ftype *init;
1751 gdbarch_dump_tdep_ftype *dump_tdep;
1752 struct gdbarch_list *arches;
1753 struct gdbarch_registration *next;
1756 static struct gdbarch_registration *gdbarch_registry = NULL;
1759 append_name (const char ***buf, int *nr, const char *name)
1761 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1767 gdbarch_printable_names (void)
1769 /* Accumulate a list of names based on the registed list of
1771 enum bfd_architecture a;
1773 const char **arches = NULL;
1774 struct gdbarch_registration *rego;
1775 for (rego = gdbarch_registry;
1779 const struct bfd_arch_info *ap;
1780 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1782 internal_error (__FILE__, __LINE__,
1783 _("gdbarch_architecture_names: multi-arch unknown"));
1786 append_name (&arches, &nr_arches, ap->printable_name);
1791 append_name (&arches, &nr_arches, NULL);
1797 gdbarch_register (enum bfd_architecture bfd_architecture,
1798 gdbarch_init_ftype *init,
1799 gdbarch_dump_tdep_ftype *dump_tdep)
1801 struct gdbarch_registration **curr;
1802 const struct bfd_arch_info *bfd_arch_info;
1803 /* Check that BFD recognizes this architecture */
1804 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1805 if (bfd_arch_info == NULL)
1807 internal_error (__FILE__, __LINE__,
1808 _("gdbarch: Attempt to register unknown architecture (%d)"),
1811 /* Check that we haven't seen this architecture before */
1812 for (curr = &gdbarch_registry;
1814 curr = &(*curr)->next)
1816 if (bfd_architecture == (*curr)->bfd_architecture)
1817 internal_error (__FILE__, __LINE__,
1818 _("gdbarch: Duplicate registraration of architecture (%s)"),
1819 bfd_arch_info->printable_name);
1823 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
1824 bfd_arch_info->printable_name,
1827 (*curr) = XMALLOC (struct gdbarch_registration);
1828 (*curr)->bfd_architecture = bfd_architecture;
1829 (*curr)->init = init;
1830 (*curr)->dump_tdep = dump_tdep;
1831 (*curr)->arches = NULL;
1832 (*curr)->next = NULL;
1836 register_gdbarch_init (enum bfd_architecture bfd_architecture,
1837 gdbarch_init_ftype *init)
1839 gdbarch_register (bfd_architecture, init, NULL);
1843 /* Look for an architecture using gdbarch_info. */
1845 struct gdbarch_list *
1846 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
1847 const struct gdbarch_info *info)
1849 for (; arches != NULL; arches = arches->next)
1851 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
1853 if (info->byte_order != arches->gdbarch->byte_order)
1855 if (info->osabi != arches->gdbarch->osabi)
1857 if (info->target_desc != arches->gdbarch->target_desc)
1865 /* Find an architecture that matches the specified INFO. Create a new
1866 architecture if needed. Return that new architecture. Assumes
1867 that there is no current architecture. */
1869 static struct gdbarch *
1870 find_arch_by_info (struct gdbarch_info info)
1872 struct gdbarch *new_gdbarch;
1873 struct gdbarch_registration *rego;
1875 /* The existing architecture has been swapped out - all this code
1876 works from a clean slate. */
1877 gdb_assert (current_gdbarch == NULL);
1879 /* Fill in missing parts of the INFO struct using a number of
1880 sources: "set ..."; INFOabfd supplied; and the global
1882 gdbarch_info_fill (&info);
1884 /* Must have found some sort of architecture. */
1885 gdb_assert (info.bfd_arch_info != NULL);
1889 fprintf_unfiltered (gdb_stdlog,
1890 "find_arch_by_info: info.bfd_arch_info %s\n",
1891 (info.bfd_arch_info != NULL
1892 ? info.bfd_arch_info->printable_name
1894 fprintf_unfiltered (gdb_stdlog,
1895 "find_arch_by_info: info.byte_order %d (%s)\n",
1897 (info.byte_order == BFD_ENDIAN_BIG ? "big"
1898 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
1900 fprintf_unfiltered (gdb_stdlog,
1901 "find_arch_by_info: info.osabi %d (%s)\n",
1902 info.osabi, gdbarch_osabi_name (info.osabi));
1903 fprintf_unfiltered (gdb_stdlog,
1904 "find_arch_by_info: info.abfd 0x%lx\n",
1906 fprintf_unfiltered (gdb_stdlog,
1907 "find_arch_by_info: info.tdep_info 0x%lx\n",
1908 (long) info.tdep_info);
1911 /* Find the tdep code that knows about this architecture. */
1912 for (rego = gdbarch_registry;
1915 if (rego->bfd_architecture == info.bfd_arch_info->arch)
1920 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1921 "No matching architecture\n");
1925 /* Ask the tdep code for an architecture that matches "info". */
1926 new_gdbarch = rego->init (info, rego->arches);
1928 /* Did the tdep code like it? No. Reject the change and revert to
1929 the old architecture. */
1930 if (new_gdbarch == NULL)
1933 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1934 "Target rejected architecture\n");
1938 /* Is this a pre-existing architecture (as determined by already
1939 being initialized)? Move it to the front of the architecture
1940 list (keeping the list sorted Most Recently Used). */
1941 if (new_gdbarch->initialized_p)
1943 struct gdbarch_list **list;
1944 struct gdbarch_list *this;
1946 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1947 "Previous architecture 0x%08lx (%s) selected\n",
1949 new_gdbarch->bfd_arch_info->printable_name);
1950 /* Find the existing arch in the list. */
1951 for (list = ®o->arches;
1952 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
1953 list = &(*list)->next);
1954 /* It had better be in the list of architectures. */
1955 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
1958 (*list) = this->next;
1959 /* Insert THIS at the front. */
1960 this->next = rego->arches;
1961 rego->arches = this;
1966 /* It's a new architecture. */
1968 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1969 "New architecture 0x%08lx (%s) selected\n",
1971 new_gdbarch->bfd_arch_info->printable_name);
1973 /* Insert the new architecture into the front of the architecture
1974 list (keep the list sorted Most Recently Used). */
1976 struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
1977 this->next = rego->arches;
1978 this->gdbarch = new_gdbarch;
1979 rego->arches = this;
1982 /* Check that the newly installed architecture is valid. Plug in
1983 any post init values. */
1984 new_gdbarch->dump_tdep = rego->dump_tdep;
1985 verify_gdbarch (new_gdbarch);
1986 new_gdbarch->initialized_p = 1;
1989 gdbarch_dump (new_gdbarch, gdb_stdlog);
1995 gdbarch_find_by_info (struct gdbarch_info info)
1997 struct gdbarch *new_gdbarch;
1999 /* Save the previously selected architecture, setting the global to
2000 NULL. This stops things like gdbarch->init() trying to use the
2001 previous architecture's configuration. The previous architecture
2002 may not even be of the same architecture family. The most recent
2003 architecture of the same family is found at the head of the
2004 rego->arches list. */
2005 struct gdbarch *old_gdbarch = current_gdbarch;
2006 current_gdbarch = NULL;
2008 /* Find the specified architecture. */
2009 new_gdbarch = find_arch_by_info (info);
2011 /* Restore the existing architecture. */
2012 gdb_assert (current_gdbarch == NULL);
2013 current_gdbarch = old_gdbarch;
2018 /* Make the specified architecture current. */
2021 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2023 gdb_assert (new_gdbarch != NULL);
2024 gdb_assert (current_gdbarch != NULL);
2025 gdb_assert (new_gdbarch->initialized_p);
2026 current_gdbarch = new_gdbarch;
2027 target_gdbarch = new_gdbarch;
2028 observer_notify_architecture_changed (new_gdbarch);
2029 registers_changed ();
2032 extern void _initialize_gdbarch (void);
2035 _initialize_gdbarch (void)
2037 struct cmd_list_element *c;
2039 add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2040 Set architecture debugging."), _("\\
2041 Show architecture debugging."), _("\\
2042 When non-zero, architecture debugging is enabled."),
2045 &setdebuglist, &showdebuglist);
2051 #../move-if-change new-gdbarch.c gdbarch.c
2052 compare_new gdbarch.c