3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
6 # 2008, 2009 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, core_addr_to_string_nz (for CORE_ADDR)
322 # or plongest (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:::::::plongest ((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 m: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 m: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:int:cannot_step_breakpoint:::0:0::0
590 v:int:have_nonsteppable_watchpoint:::0:0::0
591 F:int:address_class_type_flags:int byte_size, int dwarf2_addr_class:byte_size, dwarf2_addr_class
592 M:const char *:address_class_type_flags_to_name:int type_flags:type_flags
593 M:int:address_class_name_to_type_flags:const char *name, int *type_flags_ptr:name, type_flags_ptr
594 # Is a register in a group
595 m:int:register_reggroup_p:int regnum, struct reggroup *reggroup:regnum, reggroup::default_register_reggroup_p::0
596 # Fetch the pointer to the ith function argument.
597 F:CORE_ADDR:fetch_pointer_argument:struct frame_info *frame, int argi, struct type *type:frame, argi, type
599 # Return the appropriate register set for a core file section with
600 # name SECT_NAME and size SECT_SIZE.
601 M:const struct regset *:regset_from_core_section:const char *sect_name, size_t sect_size:sect_name, sect_size
603 # Supported register notes in a core file.
604 v:struct core_regset_section *:core_regset_sections:const char *name, int len::::::host_address_to_string (gdbarch->core_regset_sections)
606 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
607 # core file into buffer READBUF with length LEN.
608 M:LONGEST:core_xfer_shared_libraries:gdb_byte *readbuf, ULONGEST offset, LONGEST len:readbuf, offset, len
610 # If the elements of C++ vtables are in-place function descriptors rather
611 # than normal function pointers (which may point to code or a descriptor),
613 v:int:vtable_function_descriptors:::0:0::0
615 # Set if the least significant bit of the delta is used instead of the least
616 # significant bit of the pfn for pointers to virtual member functions.
617 v:int:vbit_in_delta:::0:0::0
619 # Advance PC to next instruction in order to skip a permanent breakpoint.
620 F:void:skip_permanent_breakpoint:struct regcache *regcache:regcache
622 # The maximum length of an instruction on this architecture.
623 V:ULONGEST:max_insn_length:::0:0
625 # Copy the instruction at FROM to TO, and make any adjustments
626 # necessary to single-step it at that address.
628 # REGS holds the state the thread's registers will have before
629 # executing the copied instruction; the PC in REGS will refer to FROM,
630 # not the copy at TO. The caller should update it to point at TO later.
632 # Return a pointer to data of the architecture's choice to be passed
633 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
634 # the instruction's effects have been completely simulated, with the
635 # resulting state written back to REGS.
637 # For a general explanation of displaced stepping and how GDB uses it,
638 # see the comments in infrun.c.
640 # The TO area is only guaranteed to have space for
641 # gdbarch_max_insn_length (arch) bytes, so this function must not
642 # write more bytes than that to that area.
644 # If you do not provide this function, GDB assumes that the
645 # architecture does not support displaced stepping.
647 # If your architecture doesn't need to adjust instructions before
648 # single-stepping them, consider using simple_displaced_step_copy_insn
650 M:struct displaced_step_closure *:displaced_step_copy_insn:CORE_ADDR from, CORE_ADDR to, struct regcache *regs:from, to, regs
652 # Fix up the state resulting from successfully single-stepping a
653 # displaced instruction, to give the result we would have gotten from
654 # stepping the instruction in its original location.
656 # REGS is the register state resulting from single-stepping the
657 # displaced instruction.
659 # CLOSURE is the result from the matching call to
660 # gdbarch_displaced_step_copy_insn.
662 # If you provide gdbarch_displaced_step_copy_insn.but not this
663 # function, then GDB assumes that no fixup is needed after
664 # single-stepping the instruction.
666 # For a general explanation of displaced stepping and how GDB uses it,
667 # see the comments in infrun.c.
668 M:void:displaced_step_fixup:struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs:closure, from, to, regs::NULL
670 # Free a closure returned by gdbarch_displaced_step_copy_insn.
672 # If you provide gdbarch_displaced_step_copy_insn, you must provide
673 # this function as well.
675 # If your architecture uses closures that don't need to be freed, then
676 # you can use simple_displaced_step_free_closure here.
678 # For a general explanation of displaced stepping and how GDB uses it,
679 # see the comments in infrun.c.
680 m:void:displaced_step_free_closure:struct displaced_step_closure *closure:closure::NULL::(! gdbarch->displaced_step_free_closure) != (! gdbarch->displaced_step_copy_insn)
682 # Return the address of an appropriate place to put displaced
683 # instructions while we step over them. There need only be one such
684 # place, since we're only stepping one thread over a breakpoint at a
687 # For a general explanation of displaced stepping and how GDB uses it,
688 # see the comments in infrun.c.
689 m:CORE_ADDR:displaced_step_location:void:::NULL::(! gdbarch->displaced_step_location) != (! gdbarch->displaced_step_copy_insn)
691 # Refresh overlay mapped state for section OSECT.
692 F:void:overlay_update:struct obj_section *osect:osect
694 M:const struct target_desc *:core_read_description:struct target_ops *target, bfd *abfd:target, abfd
696 # Handle special encoding of static variables in stabs debug info.
697 F:char *:static_transform_name:char *name:name
698 # Set if the address in N_SO or N_FUN stabs may be zero.
699 v:int:sofun_address_maybe_missing:::0:0::0
701 # Signal translation: translate inferior's signal (host's) number into
702 # GDB's representation.
703 m:enum target_signal:target_signal_from_host:int signo:signo::default_target_signal_from_host::0
704 # Signal translation: translate GDB's signal number into inferior's host
706 m:int:target_signal_to_host:enum target_signal ts:ts::default_target_signal_to_host::0
708 # Record architecture-specific information from the symbol table.
709 M:void:record_special_symbol:struct objfile *objfile, asymbol *sym:objfile, sym
711 # True if the list of shared libraries is one and only for all
712 # processes, as opposed to a list of shared libraries per inferior.
713 # When this property is true, GDB assumes that since shared libraries
714 # are shared across processes, so is all code. Hence, GDB further
715 # assumes an inserted breakpoint location is visible to all processes.
716 v:int:has_global_solist:::0:0::0
723 exec > new-gdbarch.log
724 function_list | while do_read
727 ${class} ${returntype} ${function} ($formal)
731 eval echo \"\ \ \ \ ${r}=\${${r}}\"
733 if class_is_predicate_p && fallback_default_p
735 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
739 if [ "x${invalid_p}" = "x0" -a -n "${postdefault}" ]
741 echo "Error: postdefault is useless when invalid_p=0" 1>&2
745 if class_is_multiarch_p
747 if class_is_predicate_p ; then :
748 elif test "x${predefault}" = "x"
750 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
759 compare_new gdbarch.log
765 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED */
767 /* Dynamic architecture support for GDB, the GNU debugger.
769 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
770 Free Software Foundation, Inc.
772 This file is part of GDB.
774 This program is free software; you can redistribute it and/or modify
775 it under the terms of the GNU General Public License as published by
776 the Free Software Foundation; either version 3 of the License, or
777 (at your option) any later version.
779 This program is distributed in the hope that it will be useful,
780 but WITHOUT ANY WARRANTY; without even the implied warranty of
781 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
782 GNU General Public License for more details.
784 You should have received a copy of the GNU General Public License
785 along with this program. If not, see <http://www.gnu.org/licenses/>. */
787 /* This file was created with the aid of \`\`gdbarch.sh''.
789 The Bourne shell script \`\`gdbarch.sh'' creates the files
790 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
791 against the existing \`\`gdbarch.[hc]''. Any differences found
794 If editing this file, please also run gdbarch.sh and merge any
795 changes into that script. Conversely, when making sweeping changes
796 to this file, modifying gdbarch.sh and using its output may prove
818 struct minimal_symbol;
822 struct disassemble_info;
825 struct bp_target_info;
827 struct displaced_step_closure;
828 struct core_regset_section;
830 extern struct gdbarch *current_gdbarch;
831 extern struct gdbarch *target_gdbarch;
837 printf "/* The following are pre-initialized by GDBARCH. */\n"
838 function_list | while do_read
843 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
844 printf "/* set_gdbarch_${function}() - not applicable - pre-initialized. */\n"
851 printf "/* The following are initialized by the target dependent code. */\n"
852 function_list | while do_read
854 if [ -n "${comment}" ]
856 echo "${comment}" | sed \
862 if class_is_predicate_p
865 printf "extern int gdbarch_${function}_p (struct gdbarch *gdbarch);\n"
867 if class_is_variable_p
870 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
871 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, ${returntype} ${function});\n"
873 if class_is_function_p
876 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
878 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch);\n"
879 elif class_is_multiarch_p
881 printf "typedef ${returntype} (gdbarch_${function}_ftype) (struct gdbarch *gdbarch, ${formal});\n"
883 printf "typedef ${returntype} (gdbarch_${function}_ftype) (${formal});\n"
885 if [ "x${formal}" = "xvoid" ]
887 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch);\n"
889 printf "extern ${returntype} gdbarch_${function} (struct gdbarch *gdbarch, ${formal});\n"
891 printf "extern void set_gdbarch_${function} (struct gdbarch *gdbarch, gdbarch_${function}_ftype *${function});\n"
898 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
901 /* Mechanism for co-ordinating the selection of a specific
904 GDB targets (*-tdep.c) can register an interest in a specific
905 architecture. Other GDB components can register a need to maintain
906 per-architecture data.
908 The mechanisms below ensures that there is only a loose connection
909 between the set-architecture command and the various GDB
910 components. Each component can independently register their need
911 to maintain architecture specific data with gdbarch.
915 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
918 The more traditional mega-struct containing architecture specific
919 data for all the various GDB components was also considered. Since
920 GDB is built from a variable number of (fairly independent)
921 components it was determined that the global aproach was not
925 /* Register a new architectural family with GDB.
927 Register support for the specified ARCHITECTURE with GDB. When
928 gdbarch determines that the specified architecture has been
929 selected, the corresponding INIT function is called.
933 The INIT function takes two parameters: INFO which contains the
934 information available to gdbarch about the (possibly new)
935 architecture; ARCHES which is a list of the previously created
936 \`\`struct gdbarch'' for this architecture.
938 The INFO parameter is, as far as possible, be pre-initialized with
939 information obtained from INFO.ABFD or the global defaults.
941 The ARCHES parameter is a linked list (sorted most recently used)
942 of all the previously created architures for this architecture
943 family. The (possibly NULL) ARCHES->gdbarch can used to access
944 values from the previously selected architecture for this
945 architecture family. The global \`\`current_gdbarch'' shall not be
948 The INIT function shall return any of: NULL - indicating that it
949 doesn't recognize the selected architecture; an existing \`\`struct
950 gdbarch'' from the ARCHES list - indicating that the new
951 architecture is just a synonym for an earlier architecture (see
952 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
953 - that describes the selected architecture (see gdbarch_alloc()).
955 The DUMP_TDEP function shall print out all target specific values.
956 Care should be taken to ensure that the function works in both the
957 multi-arch and non- multi-arch cases. */
961 struct gdbarch *gdbarch;
962 struct gdbarch_list *next;
967 /* Use default: NULL (ZERO). */
968 const struct bfd_arch_info *bfd_arch_info;
970 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
973 int byte_order_for_code;
975 /* Use default: NULL (ZERO). */
978 /* Use default: NULL (ZERO). */
979 struct gdbarch_tdep_info *tdep_info;
981 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
982 enum gdb_osabi osabi;
984 /* Use default: NULL (ZERO). */
985 const struct target_desc *target_desc;
988 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
989 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
991 /* DEPRECATED - use gdbarch_register() */
992 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
994 extern void gdbarch_register (enum bfd_architecture architecture,
995 gdbarch_init_ftype *,
996 gdbarch_dump_tdep_ftype *);
999 /* Return a freshly allocated, NULL terminated, array of the valid
1000 architecture names. Since architectures are registered during the
1001 _initialize phase this function only returns useful information
1002 once initialization has been completed. */
1004 extern const char **gdbarch_printable_names (void);
1007 /* Helper function. Search the list of ARCHES for a GDBARCH that
1008 matches the information provided by INFO. */
1010 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1013 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1014 basic initialization using values obtained from the INFO and TDEP
1015 parameters. set_gdbarch_*() functions are called to complete the
1016 initialization of the object. */
1018 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1021 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1022 It is assumed that the caller freeds the \`\`struct
1025 extern void gdbarch_free (struct gdbarch *);
1028 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1029 obstack. The memory is freed when the corresponding architecture
1032 extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
1033 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
1034 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
1037 /* Helper function. Force an update of the current architecture.
1039 The actual architecture selected is determined by INFO, \`\`(gdb) set
1040 architecture'' et.al., the existing architecture and BFD's default
1041 architecture. INFO should be initialized to zero and then selected
1042 fields should be updated.
1044 Returns non-zero if the update succeeds */
1046 extern int gdbarch_update_p (struct gdbarch_info info);
1049 /* Helper function. Find an architecture matching info.
1051 INFO should be initialized using gdbarch_info_init, relevant fields
1052 set, and then finished using gdbarch_info_fill.
1054 Returns the corresponding architecture, or NULL if no matching
1055 architecture was found. "current_gdbarch" is not updated. */
1057 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1060 /* Helper function. Set the global "current_gdbarch" to "gdbarch".
1062 FIXME: kettenis/20031124: Of the functions that follow, only
1063 gdbarch_from_bfd is supposed to survive. The others will
1064 dissappear since in the future GDB will (hopefully) be truly
1065 multi-arch. However, for now we're still stuck with the concept of
1066 a single active architecture. */
1068 extern void deprecated_current_gdbarch_select_hack (struct gdbarch *gdbarch);
1071 /* Register per-architecture data-pointer.
1073 Reserve space for a per-architecture data-pointer. An identifier
1074 for the reserved data-pointer is returned. That identifer should
1075 be saved in a local static variable.
1077 Memory for the per-architecture data shall be allocated using
1078 gdbarch_obstack_zalloc. That memory will be deleted when the
1079 corresponding architecture object is deleted.
1081 When a previously created architecture is re-selected, the
1082 per-architecture data-pointer for that previous architecture is
1083 restored. INIT() is not re-called.
1085 Multiple registrarants for any architecture are allowed (and
1086 strongly encouraged). */
1088 struct gdbarch_data;
1090 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1091 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1092 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1093 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1094 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1095 struct gdbarch_data *data,
1098 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1101 /* Set the dynamic target-system-dependent parameters (architecture,
1102 byte-order, ...) using information found in the BFD */
1104 extern void set_gdbarch_from_file (bfd *);
1107 /* Initialize the current architecture to the "first" one we find on
1110 extern void initialize_current_architecture (void);
1112 /* gdbarch trace variable */
1113 extern int gdbarch_debug;
1115 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1120 #../move-if-change new-gdbarch.h gdbarch.h
1121 compare_new gdbarch.h
1128 exec > new-gdbarch.c
1133 #include "arch-utils.h"
1136 #include "inferior.h"
1139 #include "floatformat.h"
1141 #include "gdb_assert.h"
1142 #include "gdb_string.h"
1143 #include "reggroups.h"
1145 #include "gdb_obstack.h"
1146 #include "observer.h"
1147 #include "regcache.h"
1149 /* Static function declarations */
1151 static void alloc_gdbarch_data (struct gdbarch *);
1153 /* Non-zero if we want to trace architecture code. */
1155 #ifndef GDBARCH_DEBUG
1156 #define GDBARCH_DEBUG 0
1158 int gdbarch_debug = GDBARCH_DEBUG;
1160 show_gdbarch_debug (struct ui_file *file, int from_tty,
1161 struct cmd_list_element *c, const char *value)
1163 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1167 pformat (const struct floatformat **format)
1172 /* Just print out one of them - this is only for diagnostics. */
1173 return format[0]->name;
1178 # gdbarch open the gdbarch object
1180 printf "/* Maintain the struct gdbarch object */\n"
1182 printf "struct gdbarch\n"
1184 printf " /* Has this architecture been fully initialized? */\n"
1185 printf " int initialized_p;\n"
1187 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1188 printf " struct obstack *obstack;\n"
1190 printf " /* basic architectural information */\n"
1191 function_list | while do_read
1195 printf " ${returntype} ${function};\n"
1199 printf " /* target specific vector. */\n"
1200 printf " struct gdbarch_tdep *tdep;\n"
1201 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1203 printf " /* per-architecture data-pointers */\n"
1204 printf " unsigned nr_data;\n"
1205 printf " void **data;\n"
1207 printf " /* per-architecture swap-regions */\n"
1208 printf " struct gdbarch_swap *swap;\n"
1211 /* Multi-arch values.
1213 When extending this structure you must:
1215 Add the field below.
1217 Declare set/get functions and define the corresponding
1220 gdbarch_alloc(): If zero/NULL is not a suitable default,
1221 initialize the new field.
1223 verify_gdbarch(): Confirm that the target updated the field
1226 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1229 \`\`startup_gdbarch()'': Append an initial value to the static
1230 variable (base values on the host's c-type system).
1232 get_gdbarch(): Implement the set/get functions (probably using
1233 the macro's as shortcuts).
1238 function_list | while do_read
1240 if class_is_variable_p
1242 printf " ${returntype} ${function};\n"
1243 elif class_is_function_p
1245 printf " gdbarch_${function}_ftype *${function};\n"
1250 # A pre-initialized vector
1254 /* The default architecture uses host values (for want of a better
1258 printf "extern const struct bfd_arch_info bfd_default_arch_struct;\n"
1260 printf "struct gdbarch startup_gdbarch =\n"
1262 printf " 1, /* Always initialized. */\n"
1263 printf " NULL, /* The obstack. */\n"
1264 printf " /* basic architecture information */\n"
1265 function_list | while do_read
1269 printf " ${staticdefault}, /* ${function} */\n"
1273 /* target specific vector and its dump routine */
1275 /*per-architecture data-pointers and swap regions */
1277 /* Multi-arch values */
1279 function_list | while do_read
1281 if class_is_function_p || class_is_variable_p
1283 printf " ${staticdefault}, /* ${function} */\n"
1287 /* startup_gdbarch() */
1290 struct gdbarch *current_gdbarch = &startup_gdbarch;
1291 struct gdbarch *target_gdbarch = &startup_gdbarch;
1294 # Create a new gdbarch struct
1297 /* Create a new \`\`struct gdbarch'' based on information provided by
1298 \`\`struct gdbarch_info''. */
1303 gdbarch_alloc (const struct gdbarch_info *info,
1304 struct gdbarch_tdep *tdep)
1306 struct gdbarch *gdbarch;
1308 /* Create an obstack for allocating all the per-architecture memory,
1309 then use that to allocate the architecture vector. */
1310 struct obstack *obstack = XMALLOC (struct obstack);
1311 obstack_init (obstack);
1312 gdbarch = obstack_alloc (obstack, sizeof (*gdbarch));
1313 memset (gdbarch, 0, sizeof (*gdbarch));
1314 gdbarch->obstack = obstack;
1316 alloc_gdbarch_data (gdbarch);
1318 gdbarch->tdep = tdep;
1321 function_list | while do_read
1325 printf " gdbarch->${function} = info->${function};\n"
1329 printf " /* Force the explicit initialization of these. */\n"
1330 function_list | while do_read
1332 if class_is_function_p || class_is_variable_p
1334 if [ -n "${predefault}" -a "x${predefault}" != "x0" ]
1336 printf " gdbarch->${function} = ${predefault};\n"
1341 /* gdbarch_alloc() */
1347 # Free a gdbarch struct.
1351 /* Allocate extra space using the per-architecture obstack. */
1354 gdbarch_obstack_zalloc (struct gdbarch *arch, long size)
1356 void *data = obstack_alloc (arch->obstack, size);
1357 memset (data, 0, size);
1362 /* Free a gdbarch struct. This should never happen in normal
1363 operation --- once you've created a gdbarch, you keep it around.
1364 However, if an architecture's init function encounters an error
1365 building the structure, it may need to clean up a partially
1366 constructed gdbarch. */
1369 gdbarch_free (struct gdbarch *arch)
1371 struct obstack *obstack;
1372 gdb_assert (arch != NULL);
1373 gdb_assert (!arch->initialized_p);
1374 obstack = arch->obstack;
1375 obstack_free (obstack, 0); /* Includes the ARCH. */
1380 # verify a new architecture
1384 /* Ensure that all values in a GDBARCH are reasonable. */
1387 verify_gdbarch (struct gdbarch *gdbarch)
1389 struct ui_file *log;
1390 struct cleanup *cleanups;
1393 log = mem_fileopen ();
1394 cleanups = make_cleanup_ui_file_delete (log);
1396 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1397 fprintf_unfiltered (log, "\n\tbyte-order");
1398 if (gdbarch->bfd_arch_info == NULL)
1399 fprintf_unfiltered (log, "\n\tbfd_arch_info");
1400 /* Check those that need to be defined for the given multi-arch level. */
1402 function_list | while do_read
1404 if class_is_function_p || class_is_variable_p
1406 if [ "x${invalid_p}" = "x0" ]
1408 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1409 elif class_is_predicate_p
1411 printf " /* Skip verify of ${function}, has predicate */\n"
1412 # FIXME: See do_read for potential simplification
1413 elif [ -n "${invalid_p}" -a -n "${postdefault}" ]
1415 printf " if (${invalid_p})\n"
1416 printf " gdbarch->${function} = ${postdefault};\n"
1417 elif [ -n "${predefault}" -a -n "${postdefault}" ]
1419 printf " if (gdbarch->${function} == ${predefault})\n"
1420 printf " gdbarch->${function} = ${postdefault};\n"
1421 elif [ -n "${postdefault}" ]
1423 printf " if (gdbarch->${function} == 0)\n"
1424 printf " gdbarch->${function} = ${postdefault};\n"
1425 elif [ -n "${invalid_p}" ]
1427 printf " if (${invalid_p})\n"
1428 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1429 elif [ -n "${predefault}" ]
1431 printf " if (gdbarch->${function} == ${predefault})\n"
1432 printf " fprintf_unfiltered (log, \"\\\\n\\\\t${function}\");\n"
1437 buf = ui_file_xstrdup (log, &dummy);
1438 make_cleanup (xfree, buf);
1439 if (strlen (buf) > 0)
1440 internal_error (__FILE__, __LINE__,
1441 _("verify_gdbarch: the following are invalid ...%s"),
1443 do_cleanups (cleanups);
1447 # dump the structure
1451 /* Print out the details of the current architecture. */
1454 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1456 const char *gdb_nm_file = "<not-defined>";
1457 #if defined (GDB_NM_FILE)
1458 gdb_nm_file = GDB_NM_FILE;
1460 fprintf_unfiltered (file,
1461 "gdbarch_dump: GDB_NM_FILE = %s\\n",
1464 function_list | sort -t: -k 3 | while do_read
1466 # First the predicate
1467 if class_is_predicate_p
1469 printf " fprintf_unfiltered (file,\n"
1470 printf " \"gdbarch_dump: gdbarch_${function}_p() = %%d\\\\n\",\n"
1471 printf " gdbarch_${function}_p (gdbarch));\n"
1473 # Print the corresponding value.
1474 if class_is_function_p
1476 printf " fprintf_unfiltered (file,\n"
1477 printf " \"gdbarch_dump: ${function} = <0x%%lx>\\\\n\",\n"
1478 printf " (long) gdbarch->${function});\n"
1481 case "${print}:${returntype}" in
1484 print="core_addr_to_string_nz (gdbarch->${function})"
1488 print="plongest (gdbarch->${function})"
1494 printf " fprintf_unfiltered (file,\n"
1495 printf " \"gdbarch_dump: ${function} = %s\\\\n\",\n" "${fmt}"
1496 printf " ${print});\n"
1500 if (gdbarch->dump_tdep != NULL)
1501 gdbarch->dump_tdep (gdbarch, file);
1509 struct gdbarch_tdep *
1510 gdbarch_tdep (struct gdbarch *gdbarch)
1512 if (gdbarch_debug >= 2)
1513 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
1514 return gdbarch->tdep;
1518 function_list | while do_read
1520 if class_is_predicate_p
1524 printf "gdbarch_${function}_p (struct gdbarch *gdbarch)\n"
1526 printf " gdb_assert (gdbarch != NULL);\n"
1527 printf " return ${predicate};\n"
1530 if class_is_function_p
1533 printf "${returntype}\n"
1534 if [ "x${formal}" = "xvoid" ]
1536 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1538 printf "gdbarch_${function} (struct gdbarch *gdbarch, ${formal})\n"
1541 printf " gdb_assert (gdbarch != NULL);\n"
1542 printf " gdb_assert (gdbarch->${function} != NULL);\n"
1543 if class_is_predicate_p && test -n "${predefault}"
1545 # Allow a call to a function with a predicate.
1546 printf " /* Do not check predicate: ${predicate}, allow call. */\n"
1548 printf " if (gdbarch_debug >= 2)\n"
1549 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1550 if [ "x${actual}" = "x-" -o "x${actual}" = "x" ]
1552 if class_is_multiarch_p
1559 if class_is_multiarch_p
1561 params="gdbarch, ${actual}"
1566 if [ "x${returntype}" = "xvoid" ]
1568 printf " gdbarch->${function} (${params});\n"
1570 printf " return gdbarch->${function} (${params});\n"
1575 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1576 printf " `echo ${function} | sed -e 's/./ /g'` gdbarch_${function}_ftype ${function})\n"
1578 printf " gdbarch->${function} = ${function};\n"
1580 elif class_is_variable_p
1583 printf "${returntype}\n"
1584 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1586 printf " gdb_assert (gdbarch != NULL);\n"
1587 if [ "x${invalid_p}" = "x0" ]
1589 printf " /* Skip verify of ${function}, invalid_p == 0 */\n"
1590 elif [ -n "${invalid_p}" ]
1592 printf " /* Check variable is valid. */\n"
1593 printf " gdb_assert (!(${invalid_p}));\n"
1594 elif [ -n "${predefault}" ]
1596 printf " /* Check variable changed from pre-default. */\n"
1597 printf " gdb_assert (gdbarch->${function} != ${predefault});\n"
1599 printf " if (gdbarch_debug >= 2)\n"
1600 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1601 printf " return gdbarch->${function};\n"
1605 printf "set_gdbarch_${function} (struct gdbarch *gdbarch,\n"
1606 printf " `echo ${function} | sed -e 's/./ /g'` ${returntype} ${function})\n"
1608 printf " gdbarch->${function} = ${function};\n"
1610 elif class_is_info_p
1613 printf "${returntype}\n"
1614 printf "gdbarch_${function} (struct gdbarch *gdbarch)\n"
1616 printf " gdb_assert (gdbarch != NULL);\n"
1617 printf " if (gdbarch_debug >= 2)\n"
1618 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_${function} called\\\\n\");\n"
1619 printf " return gdbarch->${function};\n"
1624 # All the trailing guff
1628 /* Keep a registry of per-architecture data-pointers required by GDB
1635 gdbarch_data_pre_init_ftype *pre_init;
1636 gdbarch_data_post_init_ftype *post_init;
1639 struct gdbarch_data_registration
1641 struct gdbarch_data *data;
1642 struct gdbarch_data_registration *next;
1645 struct gdbarch_data_registry
1648 struct gdbarch_data_registration *registrations;
1651 struct gdbarch_data_registry gdbarch_data_registry =
1656 static struct gdbarch_data *
1657 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
1658 gdbarch_data_post_init_ftype *post_init)
1660 struct gdbarch_data_registration **curr;
1661 /* Append the new registraration. */
1662 for (curr = &gdbarch_data_registry.registrations;
1664 curr = &(*curr)->next);
1665 (*curr) = XMALLOC (struct gdbarch_data_registration);
1666 (*curr)->next = NULL;
1667 (*curr)->data = XMALLOC (struct gdbarch_data);
1668 (*curr)->data->index = gdbarch_data_registry.nr++;
1669 (*curr)->data->pre_init = pre_init;
1670 (*curr)->data->post_init = post_init;
1671 (*curr)->data->init_p = 1;
1672 return (*curr)->data;
1675 struct gdbarch_data *
1676 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
1678 return gdbarch_data_register (pre_init, NULL);
1681 struct gdbarch_data *
1682 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
1684 return gdbarch_data_register (NULL, post_init);
1687 /* Create/delete the gdbarch data vector. */
1690 alloc_gdbarch_data (struct gdbarch *gdbarch)
1692 gdb_assert (gdbarch->data == NULL);
1693 gdbarch->nr_data = gdbarch_data_registry.nr;
1694 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
1697 /* Initialize the current value of the specified per-architecture
1701 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1702 struct gdbarch_data *data,
1705 gdb_assert (data->index < gdbarch->nr_data);
1706 gdb_assert (gdbarch->data[data->index] == NULL);
1707 gdb_assert (data->pre_init == NULL);
1708 gdbarch->data[data->index] = pointer;
1711 /* Return the current value of the specified per-architecture
1715 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
1717 gdb_assert (data->index < gdbarch->nr_data);
1718 if (gdbarch->data[data->index] == NULL)
1720 /* The data-pointer isn't initialized, call init() to get a
1722 if (data->pre_init != NULL)
1723 /* Mid architecture creation: pass just the obstack, and not
1724 the entire architecture, as that way it isn't possible for
1725 pre-init code to refer to undefined architecture
1727 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
1728 else if (gdbarch->initialized_p
1729 && data->post_init != NULL)
1730 /* Post architecture creation: pass the entire architecture
1731 (as all fields are valid), but be careful to also detect
1732 recursive references. */
1734 gdb_assert (data->init_p);
1736 gdbarch->data[data->index] = data->post_init (gdbarch);
1740 /* The architecture initialization hasn't completed - punt -
1741 hope that the caller knows what they are doing. Once
1742 deprecated_set_gdbarch_data has been initialized, this can be
1743 changed to an internal error. */
1745 gdb_assert (gdbarch->data[data->index] != NULL);
1747 return gdbarch->data[data->index];
1751 /* Keep a registry of the architectures known by GDB. */
1753 struct gdbarch_registration
1755 enum bfd_architecture bfd_architecture;
1756 gdbarch_init_ftype *init;
1757 gdbarch_dump_tdep_ftype *dump_tdep;
1758 struct gdbarch_list *arches;
1759 struct gdbarch_registration *next;
1762 static struct gdbarch_registration *gdbarch_registry = NULL;
1765 append_name (const char ***buf, int *nr, const char *name)
1767 *buf = xrealloc (*buf, sizeof (char**) * (*nr + 1));
1773 gdbarch_printable_names (void)
1775 /* Accumulate a list of names based on the registed list of
1777 enum bfd_architecture a;
1779 const char **arches = NULL;
1780 struct gdbarch_registration *rego;
1781 for (rego = gdbarch_registry;
1785 const struct bfd_arch_info *ap;
1786 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
1788 internal_error (__FILE__, __LINE__,
1789 _("gdbarch_architecture_names: multi-arch unknown"));
1792 append_name (&arches, &nr_arches, ap->printable_name);
1797 append_name (&arches, &nr_arches, NULL);
1803 gdbarch_register (enum bfd_architecture bfd_architecture,
1804 gdbarch_init_ftype *init,
1805 gdbarch_dump_tdep_ftype *dump_tdep)
1807 struct gdbarch_registration **curr;
1808 const struct bfd_arch_info *bfd_arch_info;
1809 /* Check that BFD recognizes this architecture */
1810 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
1811 if (bfd_arch_info == NULL)
1813 internal_error (__FILE__, __LINE__,
1814 _("gdbarch: Attempt to register unknown architecture (%d)"),
1817 /* Check that we haven't seen this architecture before */
1818 for (curr = &gdbarch_registry;
1820 curr = &(*curr)->next)
1822 if (bfd_architecture == (*curr)->bfd_architecture)
1823 internal_error (__FILE__, __LINE__,
1824 _("gdbarch: Duplicate registraration of architecture (%s)"),
1825 bfd_arch_info->printable_name);
1829 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, 0x%08lx)\n",
1830 bfd_arch_info->printable_name,
1833 (*curr) = XMALLOC (struct gdbarch_registration);
1834 (*curr)->bfd_architecture = bfd_architecture;
1835 (*curr)->init = init;
1836 (*curr)->dump_tdep = dump_tdep;
1837 (*curr)->arches = NULL;
1838 (*curr)->next = NULL;
1842 register_gdbarch_init (enum bfd_architecture bfd_architecture,
1843 gdbarch_init_ftype *init)
1845 gdbarch_register (bfd_architecture, init, NULL);
1849 /* Look for an architecture using gdbarch_info. */
1851 struct gdbarch_list *
1852 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
1853 const struct gdbarch_info *info)
1855 for (; arches != NULL; arches = arches->next)
1857 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
1859 if (info->byte_order != arches->gdbarch->byte_order)
1861 if (info->osabi != arches->gdbarch->osabi)
1863 if (info->target_desc != arches->gdbarch->target_desc)
1871 /* Find an architecture that matches the specified INFO. Create a new
1872 architecture if needed. Return that new architecture. Assumes
1873 that there is no current architecture. */
1875 static struct gdbarch *
1876 find_arch_by_info (struct gdbarch_info info)
1878 struct gdbarch *new_gdbarch;
1879 struct gdbarch_registration *rego;
1881 /* The existing architecture has been swapped out - all this code
1882 works from a clean slate. */
1883 gdb_assert (current_gdbarch == NULL);
1885 /* Fill in missing parts of the INFO struct using a number of
1886 sources: "set ..."; INFOabfd supplied; and the global
1888 gdbarch_info_fill (&info);
1890 /* Must have found some sort of architecture. */
1891 gdb_assert (info.bfd_arch_info != NULL);
1895 fprintf_unfiltered (gdb_stdlog,
1896 "find_arch_by_info: info.bfd_arch_info %s\n",
1897 (info.bfd_arch_info != NULL
1898 ? info.bfd_arch_info->printable_name
1900 fprintf_unfiltered (gdb_stdlog,
1901 "find_arch_by_info: info.byte_order %d (%s)\n",
1903 (info.byte_order == BFD_ENDIAN_BIG ? "big"
1904 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
1906 fprintf_unfiltered (gdb_stdlog,
1907 "find_arch_by_info: info.osabi %d (%s)\n",
1908 info.osabi, gdbarch_osabi_name (info.osabi));
1909 fprintf_unfiltered (gdb_stdlog,
1910 "find_arch_by_info: info.abfd 0x%lx\n",
1912 fprintf_unfiltered (gdb_stdlog,
1913 "find_arch_by_info: info.tdep_info 0x%lx\n",
1914 (long) info.tdep_info);
1917 /* Find the tdep code that knows about this architecture. */
1918 for (rego = gdbarch_registry;
1921 if (rego->bfd_architecture == info.bfd_arch_info->arch)
1926 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1927 "No matching architecture\n");
1931 /* Ask the tdep code for an architecture that matches "info". */
1932 new_gdbarch = rego->init (info, rego->arches);
1934 /* Did the tdep code like it? No. Reject the change and revert to
1935 the old architecture. */
1936 if (new_gdbarch == NULL)
1939 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1940 "Target rejected architecture\n");
1944 /* Is this a pre-existing architecture (as determined by already
1945 being initialized)? Move it to the front of the architecture
1946 list (keeping the list sorted Most Recently Used). */
1947 if (new_gdbarch->initialized_p)
1949 struct gdbarch_list **list;
1950 struct gdbarch_list *this;
1952 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1953 "Previous architecture 0x%08lx (%s) selected\n",
1955 new_gdbarch->bfd_arch_info->printable_name);
1956 /* Find the existing arch in the list. */
1957 for (list = ®o->arches;
1958 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
1959 list = &(*list)->next);
1960 /* It had better be in the list of architectures. */
1961 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
1964 (*list) = this->next;
1965 /* Insert THIS at the front. */
1966 this->next = rego->arches;
1967 rego->arches = this;
1972 /* It's a new architecture. */
1974 fprintf_unfiltered (gdb_stdlog, "find_arch_by_info: "
1975 "New architecture 0x%08lx (%s) selected\n",
1977 new_gdbarch->bfd_arch_info->printable_name);
1979 /* Insert the new architecture into the front of the architecture
1980 list (keep the list sorted Most Recently Used). */
1982 struct gdbarch_list *this = XMALLOC (struct gdbarch_list);
1983 this->next = rego->arches;
1984 this->gdbarch = new_gdbarch;
1985 rego->arches = this;
1988 /* Check that the newly installed architecture is valid. Plug in
1989 any post init values. */
1990 new_gdbarch->dump_tdep = rego->dump_tdep;
1991 verify_gdbarch (new_gdbarch);
1992 new_gdbarch->initialized_p = 1;
1995 gdbarch_dump (new_gdbarch, gdb_stdlog);
2001 gdbarch_find_by_info (struct gdbarch_info info)
2003 struct gdbarch *new_gdbarch;
2005 /* Save the previously selected architecture, setting the global to
2006 NULL. This stops things like gdbarch->init() trying to use the
2007 previous architecture's configuration. The previous architecture
2008 may not even be of the same architecture family. The most recent
2009 architecture of the same family is found at the head of the
2010 rego->arches list. */
2011 struct gdbarch *old_gdbarch = current_gdbarch;
2012 current_gdbarch = NULL;
2014 /* Find the specified architecture. */
2015 new_gdbarch = find_arch_by_info (info);
2017 /* Restore the existing architecture. */
2018 gdb_assert (current_gdbarch == NULL);
2019 current_gdbarch = old_gdbarch;
2024 /* Make the specified architecture current. */
2027 deprecated_current_gdbarch_select_hack (struct gdbarch *new_gdbarch)
2029 gdb_assert (new_gdbarch != NULL);
2030 gdb_assert (current_gdbarch != NULL);
2031 gdb_assert (new_gdbarch->initialized_p);
2032 current_gdbarch = new_gdbarch;
2033 target_gdbarch = new_gdbarch;
2034 observer_notify_architecture_changed (new_gdbarch);
2035 registers_changed ();
2038 extern void _initialize_gdbarch (void);
2041 _initialize_gdbarch (void)
2043 struct cmd_list_element *c;
2045 add_setshow_zinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2046 Set architecture debugging."), _("\\
2047 Show architecture debugging."), _("\\
2048 When non-zero, architecture debugging is enabled."),
2051 &setdebuglist, &showdebuglist);
2057 #../move-if-change new-gdbarch.c gdbarch.c
2058 compare_new gdbarch.c