3 # Architecture commands for GDB, the GNU debugger.
5 # Copyright (C) 1998-2020 Free Software Foundation, Inc.
7 # This file is part of GDB.
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 # Make certain that the script is not running in an internationalized
25 LC_ALL
=C
; export LC_ALL
31 if test ! -r "${file}"
33 echo "${file} missing? cp new-${file} ${file}" 1>&2
34 elif diff -u "${file}" "new-${file}"
36 echo "${file} unchanged" 1>&2
38 echo "${file} has changed? cp new-${file} ${file}" 1>&2
43 # Format of the input table
44 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
50 # On some SH's, 'read' trims leading and trailing whitespace by
51 # default (e.g., bash), while on others (e.g., dash), it doesn't.
52 # Set IFS to empty to disable the trimming everywhere.
53 # shellcheck disable=SC2162
54 while IFS
='' read line
56 if test "${line}" = ""
59 elif test "${line}" = "#" -a "${comment}" = ""
62 elif expr "${line}" : "#" > /dev
/null
68 # The semantics of IFS varies between different SH's. Some
69 # treat ``;;' as three fields while some treat it as just two.
70 # Work around this by eliminating ``;;'' ....
71 line
="$(echo "${line}" | sed -e 's/;;/; ;/g' -e 's/;;/; ;/g')"
73 OFS
="${IFS}" ; IFS
="[;]"
74 eval read "${read}" <<EOF
79 if test -n "${garbage_at_eol:-}"
81 echo "Garbage at end-of-line in ${line}" 1>&2
86 # .... and then going back through each field and strip out those
87 # that ended up with just that space character.
90 if eval test "\"\${${r}}\" = ' '"
97 m
) staticdefault
="${predefault:-}" ;;
98 M
) staticdefault
="0" ;;
99 * ) test "${staticdefault}" || staticdefault
=0 ;;
104 case "${invalid_p:-}" in
106 if test -n "${predefault}"
108 #invalid_p="gdbarch->${function} == ${predefault}"
109 predicate
="gdbarch->${function:-} != ${predefault}"
110 elif class_is_variable_p
112 predicate
="gdbarch->${function} != 0"
113 elif class_is_function_p
115 predicate
="gdbarch->${function} != NULL"
119 echo "Predicate function ${function} with invalid_p." 1>&2
126 #NOT YET: See gdbarch.log for basic verification of
141 fallback_default_p
()
143 { [ -n "${postdefault:-}" ] && [ "x${invalid_p}" != "x0" ]; } \
144 || { [ -n "${predefault}" ] && [ "x${invalid_p}" = "x0" ]; }
147 class_is_variable_p
()
155 class_is_function_p
()
158 *f
* |
*F
* |
*m
* |
*M
* ) true
;;
163 class_is_multiarch_p
()
171 class_is_predicate_p
()
174 *F
* |
*V
* |
*M
* ) true
;;
188 # dump out/verify the doco
198 # F -> function + predicate
199 # hiding a function + predicate to test function validity
202 # V -> variable + predicate
203 # hiding a variable + predicate to test variables validity
205 # hiding something from the ``struct info'' object
206 # m -> multi-arch function
207 # hiding a multi-arch function (parameterised with the architecture)
208 # M -> multi-arch function + predicate
209 # hiding a multi-arch function + predicate to test function validity
213 # For functions, the return type; for variables, the data type
217 # For functions, the member function name; for variables, the
218 # variable name. Member function names are always prefixed with
219 # ``gdbarch_'' for name-space purity.
223 # The formal argument list. It is assumed that the formal
224 # argument list includes the actual name of each list element.
225 # A function with no arguments shall have ``void'' as the
226 # formal argument list.
230 # The list of actual arguments. The arguments specified shall
231 # match the FORMAL list given above. Functions with out
232 # arguments leave this blank.
236 # To help with the GDB startup a static gdbarch object is
237 # created. STATICDEFAULT is the value to insert into that
238 # static gdbarch object. Since this a static object only
239 # simple expressions can be used.
241 # If STATICDEFAULT is empty, zero is used.
245 # An initial value to assign to MEMBER of the freshly
246 # malloc()ed gdbarch object. After initialization, the
247 # freshly malloc()ed object is passed to the target
248 # architecture code for further updates.
250 # If PREDEFAULT is empty, zero is used.
252 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
253 # INVALID_P are specified, PREDEFAULT will be used as the
254 # default for the non- multi-arch target.
256 # A zero PREDEFAULT function will force the fallback to call
259 # Variable declarations can refer to ``gdbarch'' which will
260 # contain the current architecture. Care should be taken.
264 # A value to assign to MEMBER of the new gdbarch object should
265 # the target architecture code fail to change the PREDEFAULT
268 # If POSTDEFAULT is empty, no post update is performed.
270 # If both INVALID_P and POSTDEFAULT are non-empty then
271 # INVALID_P will be used to determine if MEMBER should be
272 # changed to POSTDEFAULT.
274 # If a non-empty POSTDEFAULT and a zero INVALID_P are
275 # specified, POSTDEFAULT will be used as the default for the
276 # non- multi-arch target (regardless of the value of
279 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
281 # Variable declarations can refer to ``gdbarch'' which
282 # will contain the current architecture. Care should be
287 # A predicate equation that validates MEMBER. Non-zero is
288 # returned if the code creating the new architecture failed to
289 # initialize MEMBER or the initialized the member is invalid.
290 # If POSTDEFAULT is non-empty then MEMBER will be updated to
291 # that value. If POSTDEFAULT is empty then internal_error()
294 # If INVALID_P is empty, a check that MEMBER is no longer
295 # equal to PREDEFAULT is used.
297 # The expression ``0'' disables the INVALID_P check making
298 # PREDEFAULT a legitimate value.
300 # See also PREDEFAULT and POSTDEFAULT.
304 # An optional expression that convers MEMBER to a value
305 # suitable for formatting using %s.
307 # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
308 # or plongest (anything else) is used.
310 garbage_at_eol
) : ;;
312 # Catches stray fields.
315 echo "Bad field ${field}"
323 # See below (DOCO) for description of each field
325 i;const struct bfd_arch_info *;bfd_arch_info;;;&bfd_default_arch_struct;;;;gdbarch_bfd_arch_info (gdbarch)->printable_name
327 i;enum bfd_endian;byte_order;;;BFD_ENDIAN_BIG
328 i;enum bfd_endian;byte_order_for_code;;;BFD_ENDIAN_BIG
330 i;enum gdb_osabi;osabi;;;GDB_OSABI_UNKNOWN
332 i;const struct target_desc *;target_desc;;;;;;;host_address_to_string (gdbarch->target_desc)
334 # Number of bits in a short or unsigned short for the target machine.
335 v;int;short_bit;;;8 * sizeof (short);2*TARGET_CHAR_BIT;;0
336 # Number of bits in an int or unsigned int for the target machine.
337 v;int;int_bit;;;8 * sizeof (int);4*TARGET_CHAR_BIT;;0
338 # Number of bits in a long or unsigned long for the target machine.
339 v;int;long_bit;;;8 * sizeof (long);4*TARGET_CHAR_BIT;;0
340 # Number of bits in a long long or unsigned long long for the target
342 v;int;long_long_bit;;;8 * sizeof (LONGEST);2*gdbarch->long_bit;;0
344 # The ABI default bit-size and format for "half", "float", "double", and
345 # "long double". These bit/format pairs should eventually be combined
346 # into a single object. For the moment, just initialize them as a pair.
347 # Each format describes both the big and little endian layouts (if
350 v;int;half_bit;;;16;2*TARGET_CHAR_BIT;;0
351 v;const struct floatformat **;half_format;;;;;floatformats_ieee_half;;pformat (gdbarch->half_format)
352 v;int;float_bit;;;8 * sizeof (float);4*TARGET_CHAR_BIT;;0
353 v;const struct floatformat **;float_format;;;;;floatformats_ieee_single;;pformat (gdbarch->float_format)
354 v;int;double_bit;;;8 * sizeof (double);8*TARGET_CHAR_BIT;;0
355 v;const struct floatformat **;double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->double_format)
356 v;int;long_double_bit;;;8 * sizeof (long double);8*TARGET_CHAR_BIT;;0
357 v;const struct floatformat **;long_double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->long_double_format)
359 # The ABI default bit-size for "wchar_t". wchar_t is a built-in type
360 # starting with C++11.
361 v;int;wchar_bit;;;8 * sizeof (wchar_t);4*TARGET_CHAR_BIT;;0
362 # One if \`wchar_t' is signed, zero if unsigned.
363 v;int;wchar_signed;;;1;-1;1
365 # Returns the floating-point format to be used for values of length LENGTH.
366 # NAME, if non-NULL, is the type name, which may be used to distinguish
367 # different target formats of the same length.
368 m;const struct floatformat **;floatformat_for_type;const char *name, int length;name, length;0;default_floatformat_for_type;;0
370 # For most targets, a pointer on the target and its representation as an
371 # address in GDB have the same size and "look the same". For such a
372 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
373 # / addr_bit will be set from it.
375 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
376 # also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
377 # gdbarch_address_to_pointer as well.
379 # ptr_bit is the size of a pointer on the target
380 v;int;ptr_bit;;;8 * sizeof (void*);gdbarch->int_bit;;0
381 # addr_bit is the size of a target address as represented in gdb
382 v;int;addr_bit;;;8 * sizeof (void*);0;gdbarch_ptr_bit (gdbarch);
384 # dwarf2_addr_size is the target address size as used in the Dwarf debug
385 # info. For .debug_frame FDEs, this is supposed to be the target address
386 # size from the associated CU header, and which is equivalent to the
387 # DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
388 # Unfortunately there is no good way to determine this value. Therefore
389 # dwarf2_addr_size simply defaults to the target pointer size.
391 # dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
392 # defined using the target's pointer size so far.
394 # Note that dwarf2_addr_size only needs to be redefined by a target if the
395 # GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
396 # and if Dwarf versions < 4 need to be supported.
397 v;int;dwarf2_addr_size;;;sizeof (void*);0;gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
399 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
400 v;int;char_signed;;;1;-1;1
402 F;CORE_ADDR;read_pc;readable_regcache *regcache;regcache
403 F;void;write_pc;struct regcache *regcache, CORE_ADDR val;regcache, val
404 # Function for getting target's idea of a frame pointer. FIXME: GDB's
405 # whole scheme for dealing with "frames" and "frame pointers" needs a
407 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
409 M;enum register_status;pseudo_register_read;readable_regcache *regcache, int cookednum, gdb_byte *buf;regcache, cookednum, buf
410 # Read a register into a new struct value. If the register is wholly
411 # or partly unavailable, this should call mark_value_bytes_unavailable
412 # as appropriate. If this is defined, then pseudo_register_read will
414 M;struct value *;pseudo_register_read_value;readable_regcache *regcache, int cookednum;regcache, cookednum
415 M;void;pseudo_register_write;struct regcache *regcache, int cookednum, const gdb_byte *buf;regcache, cookednum, buf
417 v;int;num_regs;;;0;-1
418 # This macro gives the number of pseudo-registers that live in the
419 # register namespace but do not get fetched or stored on the target.
420 # These pseudo-registers may be aliases for other registers,
421 # combinations of other registers, or they may be computed by GDB.
422 v;int;num_pseudo_regs;;;0;0;;0
424 # Assemble agent expression bytecode to collect pseudo-register REG.
425 # Return -1 if something goes wrong, 0 otherwise.
426 M;int;ax_pseudo_register_collect;struct agent_expr *ax, int reg;ax, reg
428 # Assemble agent expression bytecode to push the value of pseudo-register
429 # REG on the interpreter stack.
430 # Return -1 if something goes wrong, 0 otherwise.
431 M;int;ax_pseudo_register_push_stack;struct agent_expr *ax, int reg;ax, reg
433 # Some targets/architectures can do extra processing/display of
434 # segmentation faults. E.g., Intel MPX boundary faults.
435 # Call the architecture dependent function to handle the fault.
436 # UIOUT is the output stream where the handler will place information.
437 M;void;handle_segmentation_fault;struct ui_out *uiout;uiout
439 # GDB's standard (or well known) register numbers. These can map onto
440 # a real register or a pseudo (computed) register or not be defined at
442 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
443 v;int;sp_regnum;;;-1;-1;;0
444 v;int;pc_regnum;;;-1;-1;;0
445 v;int;ps_regnum;;;-1;-1;;0
446 v;int;fp0_regnum;;;0;-1;;0
447 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
448 m;int;stab_reg_to_regnum;int stab_regnr;stab_regnr;;no_op_reg_to_regnum;;0
449 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
450 m;int;ecoff_reg_to_regnum;int ecoff_regnr;ecoff_regnr;;no_op_reg_to_regnum;;0
451 # Convert from an sdb register number to an internal gdb register number.
452 m;int;sdb_reg_to_regnum;int sdb_regnr;sdb_regnr;;no_op_reg_to_regnum;;0
453 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
454 # Return -1 for bad REGNUM. Note: Several targets get this wrong.
455 m;int;dwarf2_reg_to_regnum;int dwarf2_regnr;dwarf2_regnr;;no_op_reg_to_regnum;;0
456 m;const char *;register_name;int regnr;regnr;;0
458 # Return the type of a register specified by the architecture. Only
459 # the register cache should call this function directly; others should
460 # use "register_type".
461 M;struct type *;register_type;int reg_nr;reg_nr
463 # Generate a dummy frame_id for THIS_FRAME assuming that the frame is
464 # a dummy frame. A dummy frame is created before an inferior call,
465 # the frame_id returned here must match the frame_id that was built
466 # for the inferior call. Usually this means the returned frame_id's
467 # stack address should match the address returned by
468 # gdbarch_push_dummy_call, and the returned frame_id's code address
469 # should match the address at which the breakpoint was set in the dummy
471 m;struct frame_id;dummy_id;struct frame_info *this_frame;this_frame;;default_dummy_id;;0
472 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
473 # deprecated_fp_regnum.
474 v;int;deprecated_fp_regnum;;;-1;-1;;0
476 M;CORE_ADDR;push_dummy_call;struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, function_call_return_method return_method, CORE_ADDR struct_addr;function, regcache, bp_addr, nargs, args, sp, return_method, struct_addr
477 v;int;call_dummy_location;;;;AT_ENTRY_POINT;;0
478 M;CORE_ADDR;push_dummy_code;CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache;sp, funaddr, args, nargs, value_type, real_pc, bp_addr, regcache
480 # Return true if the code of FRAME is writable.
481 m;int;code_of_frame_writable;struct frame_info *frame;frame;;default_code_of_frame_writable;;0
483 m;void;print_registers_info;struct ui_file *file, struct frame_info *frame, int regnum, int all;file, frame, regnum, all;;default_print_registers_info;;0
484 m;void;print_float_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args;;default_print_float_info;;0
485 M;void;print_vector_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args
486 # MAP a GDB RAW register number onto a simulator register number. See
487 # also include/...-sim.h.
488 m;int;register_sim_regno;int reg_nr;reg_nr;;legacy_register_sim_regno;;0
489 m;int;cannot_fetch_register;int regnum;regnum;;cannot_register_not;;0
490 m;int;cannot_store_register;int regnum;regnum;;cannot_register_not;;0
492 # Determine the address where a longjmp will land and save this address
493 # in PC. Return nonzero on success.
495 # FRAME corresponds to the longjmp frame.
496 F;int;get_longjmp_target;struct frame_info *frame, CORE_ADDR *pc;frame, pc
499 v;int;believe_pcc_promotion;;;;;;;
501 m;int;convert_register_p;int regnum, struct type *type;regnum, type;0;generic_convert_register_p;;0
502 f;int;register_to_value;struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep;frame, regnum, type, buf, optimizedp, unavailablep;0
503 f;void;value_to_register;struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf;frame, regnum, type, buf;0
504 # Construct a value representing the contents of register REGNUM in
505 # frame FRAME_ID, interpreted as type TYPE. The routine needs to
506 # allocate and return a struct value with all value attributes
507 # (but not the value contents) filled in.
508 m;struct value *;value_from_register;struct type *type, int regnum, struct frame_id frame_id;type, regnum, frame_id;;default_value_from_register;;0
510 m;CORE_ADDR;pointer_to_address;struct type *type, const gdb_byte *buf;type, buf;;unsigned_pointer_to_address;;0
511 m;void;address_to_pointer;struct type *type, gdb_byte *buf, CORE_ADDR addr;type, buf, addr;;unsigned_address_to_pointer;;0
512 M;CORE_ADDR;integer_to_address;struct type *type, const gdb_byte *buf;type, buf
514 # Return the return-value convention that will be used by FUNCTION
515 # to return a value of type VALTYPE. FUNCTION may be NULL in which
516 # case the return convention is computed based only on VALTYPE.
518 # If READBUF is not NULL, extract the return value and save it in this buffer.
520 # If WRITEBUF is not NULL, it contains a return value which will be
521 # stored into the appropriate register. This can be used when we want
522 # to force the value returned by a function (see the "return" command
524 M;enum return_value_convention;return_value;struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf;function, valtype, regcache, readbuf, writebuf
526 # Return true if the return value of function is stored in the first hidden
527 # parameter. In theory, this feature should be language-dependent, specified
528 # by language and its ABI, such as C++. Unfortunately, compiler may
529 # implement it to a target-dependent feature. So that we need such hook here
530 # to be aware of this in GDB.
531 m;int;return_in_first_hidden_param_p;struct type *type;type;;default_return_in_first_hidden_param_p;;0
533 m;CORE_ADDR;skip_prologue;CORE_ADDR ip;ip;0;0
534 M;CORE_ADDR;skip_main_prologue;CORE_ADDR ip;ip
535 # On some platforms, a single function may provide multiple entry points,
536 # e.g. one that is used for function-pointer calls and a different one
537 # that is used for direct function calls.
538 # In order to ensure that breakpoints set on the function will trigger
539 # no matter via which entry point the function is entered, a platform
540 # may provide the skip_entrypoint callback. It is called with IP set
541 # to the main entry point of a function (as determined by the symbol table),
542 # and should return the address of the innermost entry point, where the
543 # actual breakpoint needs to be set. Note that skip_entrypoint is used
544 # by GDB common code even when debugging optimized code, where skip_prologue
546 M;CORE_ADDR;skip_entrypoint;CORE_ADDR ip;ip
548 f;int;inner_than;CORE_ADDR lhs, CORE_ADDR rhs;lhs, rhs;0;0
549 m;const gdb_byte *;breakpoint_from_pc;CORE_ADDR *pcptr, int *lenptr;pcptr, lenptr;0;default_breakpoint_from_pc;;0
551 # Return the breakpoint kind for this target based on *PCPTR.
552 m;int;breakpoint_kind_from_pc;CORE_ADDR *pcptr;pcptr;;0;
554 # Return the software breakpoint from KIND. KIND can have target
555 # specific meaning like the Z0 kind parameter.
556 # SIZE is set to the software breakpoint's length in memory.
557 m;const gdb_byte *;sw_breakpoint_from_kind;int kind, int *size;kind, size;;NULL;;0
559 # Return the breakpoint kind for this target based on the current
560 # processor state (e.g. the current instruction mode on ARM) and the
561 # *PCPTR. In default, it is gdbarch->breakpoint_kind_from_pc.
562 m;int;breakpoint_kind_from_current_state;struct regcache *regcache, CORE_ADDR *pcptr;regcache, pcptr;0;default_breakpoint_kind_from_current_state;;0
564 M;CORE_ADDR;adjust_breakpoint_address;CORE_ADDR bpaddr;bpaddr
565 m;int;memory_insert_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_insert_breakpoint;;0
566 m;int;memory_remove_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_remove_breakpoint;;0
567 v;CORE_ADDR;decr_pc_after_break;;;0;;;0
569 # A function can be addressed by either it's "pointer" (possibly a
570 # descriptor address) or "entry point" (first executable instruction).
571 # The method "convert_from_func_ptr_addr" converting the former to the
572 # latter. gdbarch_deprecated_function_start_offset is being used to implement
573 # a simplified subset of that functionality - the function's address
574 # corresponds to the "function pointer" and the function's start
575 # corresponds to the "function entry point" - and hence is redundant.
577 v;CORE_ADDR;deprecated_function_start_offset;;;0;;;0
579 # Return the remote protocol register number associated with this
580 # register. Normally the identity mapping.
581 m;int;remote_register_number;int regno;regno;;default_remote_register_number;;0
583 # Fetch the target specific address used to represent a load module.
584 F;CORE_ADDR;fetch_tls_load_module_address;struct objfile *objfile;objfile
586 # Return the thread-local address at OFFSET in the thread-local
587 # storage for the thread PTID and the shared library or executable
588 # file given by LM_ADDR. If that block of thread-local storage hasn't
589 # been allocated yet, this function may throw an error. LM_ADDR may
590 # be zero for statically linked multithreaded inferiors.
592 M;CORE_ADDR;get_thread_local_address;ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset;ptid, lm_addr, offset
594 v;CORE_ADDR;frame_args_skip;;;0;;;0
595 m;CORE_ADDR;unwind_pc;struct frame_info *next_frame;next_frame;;default_unwind_pc;;0
596 m;CORE_ADDR;unwind_sp;struct frame_info *next_frame;next_frame;;default_unwind_sp;;0
597 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
598 # frame-base. Enable frame-base before frame-unwind.
599 F;int;frame_num_args;struct frame_info *frame;frame
601 M;CORE_ADDR;frame_align;CORE_ADDR address;address
602 m;int;stabs_argument_has_addr;struct type *type;type;;default_stabs_argument_has_addr;;0
603 v;int;frame_red_zone_size
605 m;CORE_ADDR;convert_from_func_ptr_addr;CORE_ADDR addr, struct target_ops *targ;addr, targ;;convert_from_func_ptr_addr_identity;;0
606 # On some machines there are bits in addresses which are not really
607 # part of the address, but are used by the kernel, the hardware, etc.
608 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
609 # we get a "real" address such as one would find in a symbol table.
610 # This is used only for addresses of instructions, and even then I'm
611 # not sure it's used in all contexts. It exists to deal with there
612 # being a few stray bits in the PC which would mislead us, not as some
613 # sort of generic thing to handle alignment or segmentation (it's
614 # possible it should be in TARGET_READ_PC instead).
615 m;CORE_ADDR;addr_bits_remove;CORE_ADDR addr;addr;;core_addr_identity;;0
617 # On some machines, not all bits of an address word are significant.
618 # For example, on AArch64, the top bits of an address known as the "tag"
619 # are ignored by the kernel, the hardware, etc. and can be regarded as
620 # additional data associated with the address.
621 v;int;significant_addr_bit;;;;;;0
623 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
624 # indicates if the target needs software single step. An ISA method to
627 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
628 # target can single step. If not, then implement single step using breakpoints.
630 # Return a vector of addresses on which the software single step
631 # breakpoints should be inserted. NULL means software single step is
633 # Multiple breakpoints may be inserted for some instructions such as
634 # conditional branch. However, each implementation must always evaluate
635 # the condition and only put the breakpoint at the branch destination if
636 # the condition is true, so that we ensure forward progress when stepping
637 # past a conditional branch to self.
638 F;std::vector<CORE_ADDR>;software_single_step;struct regcache *regcache;regcache
640 # Return non-zero if the processor is executing a delay slot and a
641 # further single-step is needed before the instruction finishes.
642 M;int;single_step_through_delay;struct frame_info *frame;frame
643 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
644 # disassembler. Perhaps objdump can handle it?
645 f;int;print_insn;bfd_vma vma, struct disassemble_info *info;vma, info;;default_print_insn;;0
646 f;CORE_ADDR;skip_trampoline_code;struct frame_info *frame, CORE_ADDR pc;frame, pc;;generic_skip_trampoline_code;;0
649 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
650 # evaluates non-zero, this is the address where the debugger will place
651 # a step-resume breakpoint to get us past the dynamic linker.
652 m;CORE_ADDR;skip_solib_resolver;CORE_ADDR pc;pc;;generic_skip_solib_resolver;;0
653 # Some systems also have trampoline code for returning from shared libs.
654 m;int;in_solib_return_trampoline;CORE_ADDR pc, const char *name;pc, name;;generic_in_solib_return_trampoline;;0
656 # Return true if PC lies inside an indirect branch thunk.
657 m;bool;in_indirect_branch_thunk;CORE_ADDR pc;pc;;default_in_indirect_branch_thunk;;0
659 # A target might have problems with watchpoints as soon as the stack
660 # frame of the current function has been destroyed. This mostly happens
661 # as the first action in a function's epilogue. stack_frame_destroyed_p()
662 # is defined to return a non-zero value if either the given addr is one
663 # instruction after the stack destroying instruction up to the trailing
664 # return instruction or if we can figure out that the stack frame has
665 # already been invalidated regardless of the value of addr. Targets
666 # which don't suffer from that problem could just let this functionality
668 m;int;stack_frame_destroyed_p;CORE_ADDR addr;addr;0;generic_stack_frame_destroyed_p;;0
669 # Process an ELF symbol in the minimal symbol table in a backend-specific
670 # way. Normally this hook is supposed to do nothing, however if required,
671 # then this hook can be used to apply tranformations to symbols that are
672 # considered special in some way. For example the MIPS backend uses it
673 # to interpret \`st_other' information to mark compressed code symbols so
674 # that they can be treated in the appropriate manner in the processing of
675 # the main symbol table and DWARF-2 records.
676 F;void;elf_make_msymbol_special;asymbol *sym, struct minimal_symbol *msym;sym, msym
677 f;void;coff_make_msymbol_special;int val, struct minimal_symbol *msym;val, msym;;default_coff_make_msymbol_special;;0
678 # Process a symbol in the main symbol table in a backend-specific way.
679 # Normally this hook is supposed to do nothing, however if required,
680 # then this hook can be used to apply tranformations to symbols that
681 # are considered special in some way. This is currently used by the
682 # MIPS backend to make sure compressed code symbols have the ISA bit
683 # set. This in turn is needed for symbol values seen in GDB to match
684 # the values used at the runtime by the program itself, for function
685 # and label references.
686 f;void;make_symbol_special;struct symbol *sym, struct objfile *objfile;sym, objfile;;default_make_symbol_special;;0
687 # Adjust the address retrieved from a DWARF-2 record other than a line
688 # entry in a backend-specific way. Normally this hook is supposed to
689 # return the address passed unchanged, however if that is incorrect for
690 # any reason, then this hook can be used to fix the address up in the
691 # required manner. This is currently used by the MIPS backend to make
692 # sure addresses in FDE, range records, etc. referring to compressed
693 # code have the ISA bit set, matching line information and the symbol
695 f;CORE_ADDR;adjust_dwarf2_addr;CORE_ADDR pc;pc;;default_adjust_dwarf2_addr;;0
696 # Adjust the address updated by a line entry in a backend-specific way.
697 # Normally this hook is supposed to return the address passed unchanged,
698 # however in the case of inconsistencies in these records, this hook can
699 # be used to fix them up in the required manner. This is currently used
700 # by the MIPS backend to make sure all line addresses in compressed code
701 # are presented with the ISA bit set, which is not always the case. This
702 # in turn ensures breakpoint addresses are correctly matched against the
704 f;CORE_ADDR;adjust_dwarf2_line;CORE_ADDR addr, int rel;addr, rel;;default_adjust_dwarf2_line;;0
705 v;int;cannot_step_breakpoint;;;0;0;;0
706 # See comment in target.h about continuable, steppable and
707 # non-steppable watchpoints.
708 v;int;have_nonsteppable_watchpoint;;;0;0;;0
709 F;int;address_class_type_flags;int byte_size, int dwarf2_addr_class;byte_size, dwarf2_addr_class
710 M;const char *;address_class_type_flags_to_name;int type_flags;type_flags
711 # Execute vendor-specific DWARF Call Frame Instruction. OP is the instruction.
712 # FS are passed from the generic execute_cfa_program function.
713 m;bool;execute_dwarf_cfa_vendor_op;gdb_byte op, struct dwarf2_frame_state *fs;op, fs;;default_execute_dwarf_cfa_vendor_op;;0
715 # Return the appropriate type_flags for the supplied address class.
716 # This function should return 1 if the address class was recognized and
717 # type_flags was set, zero otherwise.
718 M;int;address_class_name_to_type_flags;const char *name, int *type_flags_ptr;name, type_flags_ptr
719 # Is a register in a group
720 m;int;register_reggroup_p;int regnum, struct reggroup *reggroup;regnum, reggroup;;default_register_reggroup_p;;0
721 # Fetch the pointer to the ith function argument.
722 F;CORE_ADDR;fetch_pointer_argument;struct frame_info *frame, int argi, struct type *type;frame, argi, type
724 # Iterate over all supported register notes in a core file. For each
725 # supported register note section, the iterator must call CB and pass
726 # CB_DATA unchanged. If REGCACHE is not NULL, the iterator can limit
727 # the supported register note sections based on the current register
728 # values. Otherwise it should enumerate all supported register note
730 M;void;iterate_over_regset_sections;iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache;cb, cb_data, regcache
732 # Create core file notes
733 M;char *;make_corefile_notes;bfd *obfd, int *note_size;obfd, note_size
735 # Find core file memory regions
736 M;int;find_memory_regions;find_memory_region_ftype func, void *data;func, data
738 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
739 # core file into buffer READBUF with length LEN. Return the number of bytes read
740 # (zero indicates failure).
741 # failed, otherwise, return the red length of READBUF.
742 M;ULONGEST;core_xfer_shared_libraries;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
744 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
745 # libraries list from core file into buffer READBUF with length LEN.
746 # Return the number of bytes read (zero indicates failure).
747 M;ULONGEST;core_xfer_shared_libraries_aix;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
749 # How the core target converts a PTID from a core file to a string.
750 M;std::string;core_pid_to_str;ptid_t ptid;ptid
752 # How the core target extracts the name of a thread from a core file.
753 M;const char *;core_thread_name;struct thread_info *thr;thr
755 # Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information
756 # from core file into buffer READBUF with length LEN. Return the number
757 # of bytes read (zero indicates EOF, a negative value indicates failure
).
758 M
;LONGEST
;core_xfer_siginfo
;gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
; readbuf
, offset
, len
760 # BFD target to use when generating a core file.
761 V
;const char
*;gcore_bfd_target
;;;0;0;;;pstring
(gdbarch-
>gcore_bfd_target
)
763 # If the elements of C++ vtables are in-place function descriptors rather
764 # than normal function pointers (which may point to code or a descriptor),
766 v
;int
;vtable_function_descriptors
;;;0;0;;0
768 # Set if the least significant bit of the delta is used instead of the least
769 # significant bit of the pfn for pointers to virtual member functions.
770 v
;int
;vbit_in_delta
;;;0;0;;0
772 # Advance PC to next instruction in order to skip a permanent breakpoint.
773 f
;void
;skip_permanent_breakpoint
;struct regcache
*regcache
;regcache
;default_skip_permanent_breakpoint
;default_skip_permanent_breakpoint
;;0
775 # The maximum length of an instruction on this architecture in bytes.
776 V
;ULONGEST
;max_insn_length
;;;0;0
778 # Copy the instruction at FROM to TO, and make any adjustments
779 # necessary to single-step it at that address.
781 # REGS holds the state the thread's registers will have before
782 # executing the copied instruction; the PC in REGS will refer to FROM,
783 # not the copy at TO. The caller should update it to point at TO later.
785 # Return a pointer to data of the architecture's choice to be passed
786 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
787 # the instruction's effects have been completely simulated, with the
788 # resulting state written back to REGS.
790 # For a general explanation of displaced stepping and how GDB uses it,
791 # see the comments in infrun.c.
793 # The TO area is only guaranteed to have space for
794 # gdbarch_max_insn_length (arch) bytes, so this function must not
795 # write more bytes than that to that area.
797 # If you do not provide this function, GDB assumes that the
798 # architecture does not support displaced stepping.
800 # If the instruction cannot execute out of line, return NULL. The
801 # core falls back to stepping past the instruction in-line instead in
803 M
;displaced_step_closure_up
;displaced_step_copy_insn
;CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;from
, to
, regs
805 # Return true if GDB should use hardware single-stepping to execute
806 # the displaced instruction identified by CLOSURE. If false,
807 # GDB will simply restart execution at the displaced instruction
808 # location, and it is up to the target to ensure GDB will receive
809 # control again (e.g. by placing a software breakpoint instruction
810 # into the displaced instruction buffer).
812 # The default implementation returns false on all targets that
813 # provide a gdbarch_software_single_step routine, and true otherwise.
814 m
;int
;displaced_step_hw_singlestep
;struct displaced_step_closure
*closure
;closure
;;default_displaced_step_hw_singlestep
;;0
816 # Fix up the state resulting from successfully single-stepping a
817 # displaced instruction, to give the result we would have gotten from
818 # stepping the instruction in its original location.
820 # REGS is the register state resulting from single-stepping the
821 # displaced instruction.
823 # CLOSURE is the result from the matching call to
824 # gdbarch_displaced_step_copy_insn.
826 # If you provide gdbarch_displaced_step_copy_insn.but not this
827 # function, then GDB assumes that no fixup is needed after
828 # single-stepping the instruction.
830 # For a general explanation of displaced stepping and how GDB uses it,
831 # see the comments in infrun.c.
832 M
;void
;displaced_step_fixup
;struct displaced_step_closure
*closure
, CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;closure
, from
, to
, regs
;;NULL
834 # Return the address of an appropriate place to put displaced
835 # instructions while we step over them. There need only be one such
836 # place, since we're only stepping one thread over a breakpoint at a
839 # For a general explanation of displaced stepping and how GDB uses it,
840 # see the comments in infrun.c.
841 m
;CORE_ADDR
;displaced_step_location
;void
;;;NULL
;;(! gdbarch-
>displaced_step_location
) != (! gdbarch-
>displaced_step_copy_insn
)
843 # Relocate an instruction to execute at a different address. OLDLOC
844 # is the address in the inferior memory where the instruction to
845 # relocate is currently at. On input, TO points to the destination
846 # where we want the instruction to be copied (and possibly adjusted)
847 # to. On output, it points to one past the end of the resulting
848 # instruction(s). The effect of executing the instruction at TO shall
849 # be the same as if executing it at FROM. For example, call
850 # instructions that implicitly push the return address on the stack
851 # should be adjusted to return to the instruction after OLDLOC;
852 # relative branches, and other PC-relative instructions need the
853 # offset adjusted; etc.
854 M
;void
;relocate_instruction
;CORE_ADDR
*to
, CORE_ADDR from
;to
, from
;;NULL
856 # Refresh overlay mapped state for section OSECT.
857 F
;void
;overlay_update
;struct obj_section
*osect
;osect
859 M
;const struct target_desc
*;core_read_description
;struct target_ops
*target
, bfd
*abfd
;target
, abfd
861 # Handle special encoding of static variables in stabs debug info.
862 F
;const char
*;static_transform_name
;const char
*name
;name
863 # Set if the address in N_SO or N_FUN stabs may be zero.
864 v
;int
;sofun_address_maybe_missing
;;;0;0;;0
866 # Parse the instruction at ADDR storing in the record execution log
867 # the registers REGCACHE and memory ranges that will be affected when
868 # the instruction executes, along with their current values.
869 # Return -1 if something goes wrong, 0 otherwise.
870 M
;int
;process_record
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
872 # Save process state after a signal.
873 # Return -1 if something goes wrong, 0 otherwise.
874 M
;int
;process_record_signal
;struct regcache
*regcache
, enum gdb_signal signal
;regcache
, signal
876 # Signal translation: translate inferior's signal (target's) number
877 # into GDB's representation. The implementation of this method must
878 # be host independent. IOW, don't rely on symbols of the NAT_FILE
879 # header (the nm-*.h files), the host <signal.h> header, or similar
880 # headers. This is mainly used when cross-debugging core files ---
881 # "Live" targets hide the translation behind the target interface
882 # (target_wait, target_resume, etc.).
883 M
;enum gdb_signal
;gdb_signal_from_target
;int signo
;signo
885 # Signal translation: translate the GDB's internal signal number into
886 # the inferior's signal (target's) representation. The implementation
887 # of this method must be host independent. IOW, don't rely on symbols
888 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
889 # header, or similar headers.
890 # Return the target signal number if found, or -1 if the GDB internal
891 # signal number is invalid.
892 M
;int
;gdb_signal_to_target
;enum gdb_signal signal
;signal
894 # Extra signal info inspection.
896 # Return a type suitable to inspect extra signal information.
897 M
;struct
type *;get_siginfo_type
;void
;
899 # Record architecture-specific information from the symbol table.
900 M
;void
;record_special_symbol
;struct objfile
*objfile
, asymbol
*sym
;objfile
, sym
902 # Function for the 'catch syscall' feature.
904 # Get architecture-specific system calls information from registers.
905 M
;LONGEST
;get_syscall_number
;thread_info
*thread
;thread
907 # The filename of the XML syscall for this architecture.
908 v
;const char
*;xml_syscall_file
;;;0;0;;0;pstring
(gdbarch-
>xml_syscall_file
)
910 # Information about system calls from this architecture
911 v
;struct syscalls_info
*;syscalls_info
;;;0;0;;0;host_address_to_string
(gdbarch-
>syscalls_info
)
913 # SystemTap related fields and functions.
915 # A NULL-terminated array of prefixes used to mark an integer constant
916 # on the architecture's assembly.
917 # For example, on x86 integer constants are written as:
919 # \$10 ;; integer constant 10
921 # in this case, this prefix would be the character \`\$\'.
922 v
;const char
*const
*;stap_integer_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_prefixes
)
924 # A NULL-terminated array of suffixes used to mark an integer constant
925 # on the architecture's assembly.
926 v
;const char
*const
*;stap_integer_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_suffixes
)
928 # A NULL-terminated array of prefixes used to mark a register name on
929 # the architecture's assembly.
930 # For example, on x86 the register name is written as:
932 # \%eax ;; register eax
934 # in this case, this prefix would be the character \`\%\'.
935 v
;const char
*const
*;stap_register_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_prefixes
)
937 # A NULL-terminated array of suffixes used to mark a register name on
938 # the architecture's assembly.
939 v
;const char
*const
*;stap_register_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_suffixes
)
941 # A NULL-terminated array of prefixes used to mark a register
942 # indirection on the architecture's assembly.
943 # For example, on x86 the register indirection is written as:
945 # \(\%eax\) ;; indirecting eax
947 # in this case, this prefix would be the charater \`\(\'.
949 # Please note that we use the indirection prefix also for register
950 # displacement, e.g., \`4\(\%eax\)\' on x86.
951 v
;const char
*const
*;stap_register_indirection_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_prefixes
)
953 # A NULL-terminated array of suffixes used to mark a register
954 # indirection on the architecture's assembly.
955 # For example, on x86 the register indirection is written as:
957 # \(\%eax\) ;; indirecting eax
959 # in this case, this prefix would be the charater \`\)\'.
961 # Please note that we use the indirection suffix also for register
962 # displacement, e.g., \`4\(\%eax\)\' on x86.
963 v
;const char
*const
*;stap_register_indirection_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_suffixes
)
965 # Prefix(es) used to name a register using GDB's nomenclature.
967 # For example, on PPC a register is represented by a number in the assembly
968 # language (e.g., \`10\' is the 10th general-purpose register). However,
969 # inside GDB this same register has an \`r\' appended to its name, so the 10th
970 # register would be represented as \`r10\' internally.
971 v
;const char
*;stap_gdb_register_prefix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_prefix
)
973 # Suffix used to name a register using GDB's nomenclature.
974 v
;const char
*;stap_gdb_register_suffix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_suffix
)
976 # Check if S is a single operand.
978 # Single operands can be:
979 # \- Literal integers, e.g. \`\$10\' on x86
980 # \- Register access, e.g. \`\%eax\' on x86
981 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
982 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
984 # This function should check for these patterns on the string
985 # and return 1 if some were found, or zero otherwise. Please try to match
986 # as much info as you can from the string, i.e., if you have to match
987 # something like \`\(\%\', do not match just the \`\(\'.
988 M
;int
;stap_is_single_operand
;const char
*s
;s
990 # Function used to handle a "special case" in the parser.
992 # A "special case" is considered to be an unknown token, i.e., a token
993 # that the parser does not know how to parse. A good example of special
994 # case would be ARM's register displacement syntax:
996 # [R0, #4] ;; displacing R0 by 4
998 # Since the parser assumes that a register displacement is of the form:
1000 # <number> <indirection_prefix> <register_name> <indirection_suffix>
1002 # it means that it will not be able to recognize and parse this odd syntax.
1003 # Therefore, we should add a special case function that will handle this token.
1005 # This function should generate the proper expression form of the expression
1006 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
1007 # and so on). It should also return 1 if the parsing was successful, or zero
1008 # if the token was not recognized as a special token (in this case, returning
1009 # zero means that the special parser is deferring the parsing to the generic
1010 # parser), and should advance the buffer pointer (p->arg).
1011 M
;int
;stap_parse_special_token
;struct stap_parse_info
*p
;p
1013 # Perform arch-dependent adjustments to a register name.
1015 # In very specific situations, it may be necessary for the register
1016 # name present in a SystemTap probe's argument to be handled in a
1017 # special way. For example, on i386, GCC may over-optimize the
1018 # register allocation and use smaller registers than necessary. In
1019 # such cases, the client that is reading and evaluating the SystemTap
1020 # probe (ourselves) will need to actually fetch values from the wider
1021 # version of the register in question.
1023 # To illustrate the example, consider the following probe argument
1028 # This argument says that its value can be found at the %ax register,
1029 # which is a 16-bit register. However, the argument's prefix says
1030 # that its type is "uint32_t", which is 32-bit in size. Therefore, in
1031 # this case, GDB should actually fetch the probe's value from register
1032 # %eax, not %ax. In this scenario, this function would actually
1033 # replace the register name from %ax to %eax.
1035 # The rationale for this can be found at PR breakpoints/24541.
1036 M
;std
::string
;stap_adjust_register
;struct stap_parse_info
*p
, const std
::string \
®name
, int regnum
;p
, regname
, regnum
1038 # DTrace related functions.
1040 # The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
1041 # NARG must be >= 0.
1042 M
;void
;dtrace_parse_probe_argument
;struct expr_builder
*builder
, int narg
;builder
, narg
1044 # True if the given ADDR does not contain the instruction sequence
1045 # corresponding to a disabled DTrace is-enabled probe.
1046 M
;int
;dtrace_probe_is_enabled
;CORE_ADDR addr
;addr
1048 # Enable a DTrace is-enabled probe at ADDR.
1049 M
;void
;dtrace_enable_probe
;CORE_ADDR addr
;addr
1051 # Disable a DTrace is-enabled probe at ADDR.
1052 M
;void
;dtrace_disable_probe
;CORE_ADDR addr
;addr
1054 # True if the list of shared libraries is one and only for all
1055 # processes, as opposed to a list of shared libraries per inferior.
1056 # This usually means that all processes, although may or may not share
1057 # an address space, will see the same set of symbols at the same
1059 v
;int
;has_global_solist
;;;0;0;;0
1061 # On some targets, even though each inferior has its own private
1062 # address space, the debug interface takes care of making breakpoints
1063 # visible to all address spaces automatically. For such cases,
1064 # this property should be set to true.
1065 v
;int
;has_global_breakpoints
;;;0;0;;0
1067 # True if inferiors share an address space (e.g., uClinux).
1068 m
;int
;has_shared_address_space
;void
;;;default_has_shared_address_space
;;0
1070 # True if a fast tracepoint can be set at an address.
1071 m
;int
;fast_tracepoint_valid_at
;CORE_ADDR addr
, std
::string
*msg
;addr
, msg
;;default_fast_tracepoint_valid_at
;;0
1073 # Guess register state based on tracepoint location. Used for tracepoints
1074 # where no registers have been collected, but there's only one location,
1075 # allowing us to guess the PC value, and perhaps some other registers.
1076 # On entry, regcache has all registers marked as unavailable.
1077 m
;void
;guess_tracepoint_registers
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
;;default_guess_tracepoint_registers
;;0
1079 # Return the "auto" target charset.
1080 f
;const char
*;auto_charset
;void
;;default_auto_charset
;default_auto_charset
;;0
1081 # Return the "auto" target wide charset.
1082 f
;const char
*;auto_wide_charset
;void
;;default_auto_wide_charset
;default_auto_wide_charset
;;0
1084 # If non-empty, this is a file extension that will be opened in place
1085 # of the file extension reported by the shared library list.
1087 # This is most useful for toolchains that use a post-linker tool,
1088 # where the names of the files run on the target differ in extension
1089 # compared to the names of the files GDB should load for debug info.
1090 v
;const char
*;solib_symbols_extension
;;;;;;;pstring
(gdbarch-
>solib_symbols_extension
)
1092 # If true, the target OS has DOS-based file system semantics. That
1093 # is, absolute paths include a drive name, and the backslash is
1094 # considered a directory separator.
1095 v
;int
;has_dos_based_file_system
;;;0;0;;0
1097 # Generate bytecodes to collect the return address in a frame.
1098 # Since the bytecodes run on the target, possibly with GDB not even
1099 # connected, the full unwinding machinery is not available, and
1100 # typically this function will issue bytecodes for one or more likely
1101 # places that the return address may be found.
1102 m
;void
;gen_return_address
;struct agent_expr
*ax
, struct axs_value
*value
, CORE_ADDR scope
;ax
, value
, scope
;;default_gen_return_address
;;0
1104 # Implement the "info proc" command.
1105 M
;void
;info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1107 # Implement the "info proc" command for core files. Noe that there
1108 # are two "info_proc"-like methods on gdbarch -- one for core files,
1109 # one for live targets.
1110 M
;void
;core_info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1112 # Iterate over all objfiles in the order that makes the most sense
1113 # for the architecture to make global symbol searches.
1115 # CB is a callback function where OBJFILE is the objfile to be searched,
1116 # and CB_DATA a pointer to user-defined data (the same data that is passed
1117 # when calling this gdbarch method). The iteration stops if this function
1120 # CB_DATA is a pointer to some user-defined data to be passed to
1123 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1124 # inspected when the symbol search was requested.
1125 m
;void
;iterate_over_objfiles_in_search_order
;iterate_over_objfiles_in_search_order_cb_ftype
*cb
, void
*cb_data
, struct objfile
*current_objfile
;cb
, cb_data
, current_objfile
;0;default_iterate_over_objfiles_in_search_order
;;0
1127 # Ravenscar arch-dependent ops.
1128 v
;struct ravenscar_arch_ops
*;ravenscar_ops
;;;NULL
;NULL
;;0;host_address_to_string
(gdbarch-
>ravenscar_ops
)
1130 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1131 m
;int
;insn_is_call
;CORE_ADDR addr
;addr
;;default_insn_is_call
;;0
1133 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1134 m
;int
;insn_is_ret
;CORE_ADDR addr
;addr
;;default_insn_is_ret
;;0
1136 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1137 m
;int
;insn_is_jump
;CORE_ADDR addr
;addr
;;default_insn_is_jump
;;0
1139 # Return true if there's a program/permanent breakpoint planted in
1140 # memory at ADDRESS, return false otherwise.
1141 m
;bool
;program_breakpoint_here_p
;CORE_ADDR address
;address
;;default_program_breakpoint_here_p
;;0
1143 # Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
1144 # Return 0 if *READPTR is already at the end of the buffer.
1145 # Return -1 if there is insufficient buffer for a whole entry.
1146 # Return 1 if an entry was read into *TYPEP and *VALP.
1147 M
;int
;auxv_parse
;gdb_byte
**readptr
, gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
;readptr
, endptr
, typep
, valp
1149 # Print the description of a single auxv entry described by TYPE and VAL
1151 m
;void
;print_auxv_entry
;struct ui_file
*file, CORE_ADDR
type, CORE_ADDR val
;file, type, val
;;default_print_auxv_entry
;;0
1153 # Find the address range of the current inferior's vsyscall/vDSO, and
1154 # write it to *RANGE. If the vsyscall's length can't be determined, a
1155 # range with zero length is returned. Returns true if the vsyscall is
1156 # found, false otherwise.
1157 m
;int
;vsyscall_range
;struct mem_range
*range
;range
;;default_vsyscall_range
;;0
1159 # Allocate SIZE bytes of PROT protected page aligned memory in inferior.
1160 # PROT has GDB_MMAP_PROT_* bitmask format.
1161 # Throw an error if it is not possible. Returned address is always valid.
1162 f
;CORE_ADDR
;infcall_mmap
;CORE_ADDR size
, unsigned prot
;size
, prot
;;default_infcall_mmap
;;0
1164 # Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
1165 # Print a warning if it is not possible.
1166 f
;void
;infcall_munmap
;CORE_ADDR addr
, CORE_ADDR size
;addr
, size
;;default_infcall_munmap
;;0
1168 # Return string (caller has to use xfree for it) with options for GCC
1169 # to produce code for this target, typically "-m64", "-m32" or "-m31".
1170 # These options are put before CU's DW_AT_producer compilation options so that
1171 # they can override it.
1172 m
;std
::string
;gcc_target_options
;void
;;;default_gcc_target_options
;;0
1174 # Return a regular expression that matches names used by this
1175 # architecture in GNU configury triplets. The result is statically
1176 # allocated and must not be freed. The default implementation simply
1177 # returns the BFD architecture name, which is correct in nearly every
1179 m
;const char
*;gnu_triplet_regexp
;void
;;;default_gnu_triplet_regexp
;;0
1181 # Return the size in 8-bit bytes of an addressable memory unit on this
1182 # architecture. This corresponds to the number of 8-bit bytes associated to
1183 # each address in memory.
1184 m
;int
;addressable_memory_unit_size
;void
;;;default_addressable_memory_unit_size
;;0
1186 # Functions for allowing a target to modify its disassembler options.
1187 v
;const char
*;disassembler_options_implicit
;;;0;0;;0;pstring
(gdbarch-
>disassembler_options_implicit
)
1188 v
;char
**;disassembler_options
;;;0;0;;0;pstring_ptr
(gdbarch-
>disassembler_options
)
1189 v
;const disasm_options_and_args_t
*;valid_disassembler_options
;;;0;0;;0;host_address_to_string
(gdbarch-
>valid_disassembler_options
)
1191 # Type alignment override method. Return the architecture specific
1192 # alignment required for TYPE. If there is no special handling
1193 # required for TYPE then return the value 0, GDB will then apply the
1194 # default rules as laid out in gdbtypes.c:type_align.
1195 m
;ULONGEST
;type_align
;struct
type *type;type;;default_type_align
;;0
1197 # Return a string containing any flags for the given PC in the given FRAME.
1198 f
;std
::string
;get_pc_address_flags
;frame_info
*frame
, CORE_ADDR pc
;frame
, pc
;;default_get_pc_address_flags
;;0
1206 exec > new-gdbarch.log
1207 function_list |
while do_read
1210 ${class} ${returntype:-} ${function} (${formal:-})
1214 eval echo "\" ${r}=\${${r}}\""
1216 if class_is_predicate_p
&& fallback_default_p
1218 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1222 if [ "x${invalid_p}" = "x0" ] && [ -n "${postdefault}" ]
1224 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1228 if class_is_multiarch_p
1230 if class_is_predicate_p
; then :
1231 elif test "x${predefault}" = "x"
1233 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1242 compare_new gdbarch.log
1248 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1251 /* Dynamic architecture support for GDB, the GNU debugger.
1253 Copyright (C) 1998-2020 Free Software Foundation, Inc.
1255 This file is part of GDB.
1257 This program is free software; you can redistribute it and/or modify
1258 it under the terms of the GNU General Public License as published by
1259 the Free Software Foundation; either version 3 of the License, or
1260 (at your option) any later version.
1262 This program is distributed in the hope that it will be useful,
1263 but WITHOUT ANY WARRANTY; without even the implied warranty of
1264 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1265 GNU General Public License for more details.
1267 You should have received a copy of the GNU General Public License
1268 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1270 /* This file was created with the aid of \`\`gdbarch.sh''.
1272 The Bourne shell script \`\`gdbarch.sh'' creates the files
1273 \`\`new-gdbarch.c'' and \`\`new-gdbarch.h and then compares them
1274 against the existing \`\`gdbarch.[hc]''. Any differences found
1277 If editing this file, please also run gdbarch.sh and merge any
1278 changes into that script. Conversely, when making sweeping changes
1279 to this file, modifying gdbarch.sh and using its output may prove
1289 exec > new-gdbarch.h
1297 #include "dis-asm.h"
1298 #include "gdb_obstack.h"
1307 struct minimal_symbol;
1311 struct disassemble_info;
1314 struct bp_target_info;
1320 struct stap_parse_info;
1321 struct expr_builder;
1322 struct ravenscar_arch_ops;
1324 struct syscalls_info;
1328 #include "regcache.h"
1330 /* The architecture associated with the inferior through the
1331 connection to the target.
1333 The architecture vector provides some information that is really a
1334 property of the inferior, accessed through a particular target:
1335 ptrace operations; the layout of certain RSP packets; the solib_ops
1336 vector; etc. To differentiate architecture accesses to
1337 per-inferior/target properties from
1338 per-thread/per-frame/per-objfile properties, accesses to
1339 per-inferior/target properties should be made through this
1342 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1343 extern struct gdbarch *target_gdbarch (void);
1345 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1348 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1349 (struct objfile *objfile, void *cb_data);
1351 /* Callback type for regset section iterators. The callback usually
1352 invokes the REGSET's supply or collect method, to which it must
1353 pass a buffer - for collects this buffer will need to be created using
1354 COLLECT_SIZE, for supply the existing buffer being read from should
1355 be at least SUPPLY_SIZE. SECT_NAME is a BFD section name, and HUMAN_NAME
1356 is used for diagnostic messages. CB_DATA should have been passed
1357 unchanged through the iterator. */
1359 typedef void (iterate_over_regset_sections_cb)
1360 (const char *sect_name, int supply_size, int collect_size,
1361 const struct regset *regset, const char *human_name, void *cb_data);
1363 /* For a function call, does the function return a value using a
1364 normal value return or a structure return - passing a hidden
1365 argument pointing to storage. For the latter, there are two
1366 cases: language-mandated structure return and target ABI
1367 structure return. */
1369 enum function_call_return_method
1371 /* Standard value return. */
1372 return_method_normal = 0,
1374 /* Language ABI structure return. This is handled
1375 by passing the return location as the first parameter to
1376 the function, even preceding "this". */
1377 return_method_hidden_param,
1379 /* Target ABI struct return. This is target-specific; for instance,
1380 on ia64 the first argument is passed in out0 but the hidden
1381 structure return pointer would normally be passed in r8. */
1382 return_method_struct,
1387 # function typedef's
1390 printf "/* The following are pre-initialized by GDBARCH. */\n"
1391 function_list |
while do_read
1396 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1397 printf "/* set_gdbarch_%s() - not applicable - pre-initialized. */\n" "$function"
1401 # function typedef's
1404 printf "/* The following are initialized by the target dependent code. */\n"
1405 function_list |
while do_read
1407 if [ -n "${comment}" ]
1409 echo "${comment}" |
sed \
1415 if class_is_predicate_p
1418 printf "extern int gdbarch_%s_p (struct gdbarch *gdbarch);\n" "$function"
1420 if class_is_variable_p
1423 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1424 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, %s %s);\n" "$function" "$returntype" "$function"
1426 if class_is_function_p
1429 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1431 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1432 elif class_is_multiarch_p
1434 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1436 printf "typedef %s (gdbarch_%s_ftype) (%s);\n" "$returntype" "$function" "$formal"
1438 if [ "x${formal}" = "xvoid" ]
1440 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1442 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1444 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, gdbarch_%s_ftype *%s);\n" "$function" "$function" "$function"
1451 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1454 /* Mechanism for co-ordinating the selection of a specific
1457 GDB targets (*-tdep.c) can register an interest in a specific
1458 architecture. Other GDB components can register a need to maintain
1459 per-architecture data.
1461 The mechanisms below ensures that there is only a loose connection
1462 between the set-architecture command and the various GDB
1463 components. Each component can independently register their need
1464 to maintain architecture specific data with gdbarch.
1468 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1471 The more traditional mega-struct containing architecture specific
1472 data for all the various GDB components was also considered. Since
1473 GDB is built from a variable number of (fairly independent)
1474 components it was determined that the global aproach was not
1478 /* Register a new architectural family with GDB.
1480 Register support for the specified ARCHITECTURE with GDB. When
1481 gdbarch determines that the specified architecture has been
1482 selected, the corresponding INIT function is called.
1486 The INIT function takes two parameters: INFO which contains the
1487 information available to gdbarch about the (possibly new)
1488 architecture; ARCHES which is a list of the previously created
1489 \`\`struct gdbarch'' for this architecture.
1491 The INFO parameter is, as far as possible, be pre-initialized with
1492 information obtained from INFO.ABFD or the global defaults.
1494 The ARCHES parameter is a linked list (sorted most recently used)
1495 of all the previously created architures for this architecture
1496 family. The (possibly NULL) ARCHES->gdbarch can used to access
1497 values from the previously selected architecture for this
1498 architecture family.
1500 The INIT function shall return any of: NULL - indicating that it
1501 doesn't recognize the selected architecture; an existing \`\`struct
1502 gdbarch'' from the ARCHES list - indicating that the new
1503 architecture is just a synonym for an earlier architecture (see
1504 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1505 - that describes the selected architecture (see gdbarch_alloc()).
1507 The DUMP_TDEP function shall print out all target specific values.
1508 Care should be taken to ensure that the function works in both the
1509 multi-arch and non- multi-arch cases. */
1513 struct gdbarch *gdbarch;
1514 struct gdbarch_list *next;
1519 /* Use default: NULL (ZERO). */
1520 const struct bfd_arch_info *bfd_arch_info;
1522 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1523 enum bfd_endian byte_order;
1525 enum bfd_endian byte_order_for_code;
1527 /* Use default: NULL (ZERO). */
1530 /* Use default: NULL (ZERO). */
1533 /* Architecture-specific information. The generic form for targets
1534 that have extra requirements. */
1535 struct gdbarch_tdep_info *tdep_info;
1537 /* Architecture-specific target description data. Numerous targets
1538 need only this, so give them an easy way to hold it. */
1539 struct tdesc_arch_data *tdesc_data;
1541 /* SPU file system ID. This is a single integer, so using the
1542 generic form would only complicate code. Other targets may
1543 reuse this member if suitable. */
1547 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1548 enum gdb_osabi osabi;
1550 /* Use default: NULL (ZERO). */
1551 const struct target_desc *target_desc;
1554 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1555 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1557 /* DEPRECATED - use gdbarch_register() */
1558 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1560 extern void gdbarch_register (enum bfd_architecture architecture,
1561 gdbarch_init_ftype *,
1562 gdbarch_dump_tdep_ftype *);
1565 /* Return a freshly allocated, NULL terminated, array of the valid
1566 architecture names. Since architectures are registered during the
1567 _initialize phase this function only returns useful information
1568 once initialization has been completed. */
1570 extern const char **gdbarch_printable_names (void);
1573 /* Helper function. Search the list of ARCHES for a GDBARCH that
1574 matches the information provided by INFO. */
1576 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1579 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1580 basic initialization using values obtained from the INFO and TDEP
1581 parameters. set_gdbarch_*() functions are called to complete the
1582 initialization of the object. */
1584 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1587 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1588 It is assumed that the caller freeds the \`\`struct
1591 extern void gdbarch_free (struct gdbarch *);
1593 /* Get the obstack owned by ARCH. */
1595 extern obstack *gdbarch_obstack (gdbarch *arch);
1597 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1598 obstack. The memory is freed when the corresponding architecture
1601 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) \
1602 obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))
1604 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) \
1605 obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
1607 /* Duplicate STRING, returning an equivalent string that's allocated on the
1608 obstack associated with GDBARCH. The string is freed when the corresponding
1609 architecture is also freed. */
1611 extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
1613 /* Helper function. Force an update of the current architecture.
1615 The actual architecture selected is determined by INFO, \`\`(gdb) set
1616 architecture'' et.al., the existing architecture and BFD's default
1617 architecture. INFO should be initialized to zero and then selected
1618 fields should be updated.
1620 Returns non-zero if the update succeeds. */
1622 extern int gdbarch_update_p (struct gdbarch_info info);
1625 /* Helper function. Find an architecture matching info.
1627 INFO should be initialized using gdbarch_info_init, relevant fields
1628 set, and then finished using gdbarch_info_fill.
1630 Returns the corresponding architecture, or NULL if no matching
1631 architecture was found. */
1633 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1636 /* Helper function. Set the target gdbarch to "gdbarch". */
1638 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1641 /* Register per-architecture data-pointer.
1643 Reserve space for a per-architecture data-pointer. An identifier
1644 for the reserved data-pointer is returned. That identifer should
1645 be saved in a local static variable.
1647 Memory for the per-architecture data shall be allocated using
1648 gdbarch_obstack_zalloc. That memory will be deleted when the
1649 corresponding architecture object is deleted.
1651 When a previously created architecture is re-selected, the
1652 per-architecture data-pointer for that previous architecture is
1653 restored. INIT() is not re-called.
1655 Multiple registrarants for any architecture are allowed (and
1656 strongly encouraged). */
1658 struct gdbarch_data;
1660 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1661 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1662 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1663 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1664 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1665 struct gdbarch_data *data,
1668 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1671 /* Set the dynamic target-system-dependent parameters (architecture,
1672 byte-order, ...) using information found in the BFD. */
1674 extern void set_gdbarch_from_file (bfd *);
1677 /* Initialize the current architecture to the "first" one we find on
1680 extern void initialize_current_architecture (void);
1682 /* gdbarch trace variable */
1683 extern unsigned int gdbarch_debug;
1685 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1687 /* Return the number of cooked registers (raw + pseudo) for ARCH. */
1690 gdbarch_num_cooked_regs (gdbarch *arch)
1692 return gdbarch_num_regs (arch) + gdbarch_num_pseudo_regs (arch);
1698 #../move-if-change new-gdbarch.h gdbarch.h
1699 compare_new gdbarch.h
1706 exec > new-gdbarch.c
1711 #include "arch-utils.h"
1714 #include "inferior.h"
1717 #include "floatformat.h"
1718 #include "reggroups.h"
1720 #include "gdb_obstack.h"
1721 #include "observable.h"
1722 #include "regcache.h"
1723 #include "objfiles.h"
1725 #include "frame-unwind.h"
1726 #include "dummy-frame.h"
1728 /* Static function declarations */
1730 static void alloc_gdbarch_data (struct gdbarch *);
1732 /* Non-zero if we want to trace architecture code. */
1734 #ifndef GDBARCH_DEBUG
1735 #define GDBARCH_DEBUG 0
1737 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1739 show_gdbarch_debug (struct ui_file *file, int from_tty,
1740 struct cmd_list_element *c, const char *value)
1742 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1746 pformat (const struct floatformat **format)
1751 /* Just print out one of them - this is only for diagnostics. */
1752 return format[0]->name;
1756 pstring (const char *string)
1764 pstring_ptr (char **string)
1766 if (string == NULL || *string == NULL)
1771 /* Helper function to print a list of strings, represented as "const
1772 char *const *". The list is printed comma-separated. */
1775 pstring_list (const char *const *list)
1777 static char ret[100];
1778 const char *const *p;
1785 for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1787 size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1793 gdb_assert (offset - 2 < sizeof (ret));
1794 ret[offset - 2] = '\0';
1802 # gdbarch open the gdbarch object
1804 printf "/* Maintain the struct gdbarch object. */\n"
1806 printf "struct gdbarch\n"
1808 printf " /* Has this architecture been fully initialized? */\n"
1809 printf " int initialized_p;\n"
1811 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1812 printf " struct obstack *obstack;\n"
1814 printf " /* basic architectural information. */\n"
1815 function_list |
while do_read
1819 printf " %s %s;\n" "$returntype" "$function"
1823 printf " /* target specific vector. */\n"
1824 printf " struct gdbarch_tdep *tdep;\n"
1825 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1827 printf " /* per-architecture data-pointers. */\n"
1828 printf " unsigned nr_data;\n"
1829 printf " void **data;\n"
1832 /* Multi-arch values.
1834 When extending this structure you must:
1836 Add the field below.
1838 Declare set/get functions and define the corresponding
1841 gdbarch_alloc(): If zero/NULL is not a suitable default,
1842 initialize the new field.
1844 verify_gdbarch(): Confirm that the target updated the field
1847 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1850 get_gdbarch(): Implement the set/get functions (probably using
1851 the macro's as shortcuts).
1856 function_list |
while do_read
1858 if class_is_variable_p
1860 printf " %s %s;\n" "$returntype" "$function"
1861 elif class_is_function_p
1863 printf " gdbarch_%s_ftype *%s;\n" "$function" "$function"
1868 # Create a new gdbarch struct
1871 /* Create a new \`\`struct gdbarch'' based on information provided by
1872 \`\`struct gdbarch_info''. */
1877 gdbarch_alloc (const struct gdbarch_info *info,
1878 struct gdbarch_tdep *tdep)
1880 struct gdbarch *gdbarch;
1882 /* Create an obstack for allocating all the per-architecture memory,
1883 then use that to allocate the architecture vector. */
1884 struct obstack *obstack = XNEW (struct obstack);
1885 obstack_init (obstack);
1886 gdbarch = XOBNEW (obstack, struct gdbarch);
1887 memset (gdbarch, 0, sizeof (*gdbarch));
1888 gdbarch->obstack = obstack;
1890 alloc_gdbarch_data (gdbarch);
1892 gdbarch->tdep = tdep;
1895 function_list |
while do_read
1899 printf " gdbarch->%s = info->%s;\n" "$function" "$function"
1903 printf " /* Force the explicit initialization of these. */\n"
1904 function_list |
while do_read
1906 if class_is_function_p || class_is_variable_p
1908 if [ -n "${predefault}" ] && [ "x${predefault}" != "x0" ]
1910 printf " gdbarch->%s = %s;\n" "$function" "$predefault"
1915 /* gdbarch_alloc() */
1921 # Free a gdbarch struct.
1926 obstack *gdbarch_obstack (gdbarch *arch)
1928 return arch->obstack;
1931 /* See gdbarch.h. */
1934 gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
1936 return obstack_strdup (arch->obstack, string);
1940 /* Free a gdbarch struct. This should never happen in normal
1941 operation --- once you've created a gdbarch, you keep it around.
1942 However, if an architecture's init function encounters an error
1943 building the structure, it may need to clean up a partially
1944 constructed gdbarch. */
1947 gdbarch_free (struct gdbarch *arch)
1949 struct obstack *obstack;
1951 gdb_assert (arch != NULL);
1952 gdb_assert (!arch->initialized_p);
1953 obstack = arch->obstack;
1954 obstack_free (obstack, 0); /* Includes the ARCH. */
1959 # verify a new architecture
1963 /* Ensure that all values in a GDBARCH are reasonable. */
1966 verify_gdbarch (struct gdbarch *gdbarch)
1971 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1972 log.puts ("\n\tbyte-order");
1973 if (gdbarch->bfd_arch_info == NULL)
1974 log.puts ("\n\tbfd_arch_info");
1975 /* Check those that need to be defined for the given multi-arch level. */
1977 function_list |
while do_read
1979 if class_is_function_p || class_is_variable_p
1981 if [ "x${invalid_p}" = "x0" ]
1983 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
1984 elif class_is_predicate_p
1986 printf " /* Skip verify of %s, has predicate. */\n" "$function"
1987 # FIXME: See do_read for potential simplification
1988 elif [ -n "${invalid_p}" ] && [ -n "${postdefault}" ]
1990 printf " if (%s)\n" "$invalid_p"
1991 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1992 elif [ -n "${predefault}" ] && [ -n "${postdefault}" ]
1994 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
1995 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1996 elif [ -n "${postdefault}" ]
1998 printf " if (gdbarch->%s == 0)\n" "$function"
1999 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
2000 elif [ -n "${invalid_p}" ]
2002 printf " if (%s)\n" "$invalid_p"
2003 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
2004 elif [ -n "${predefault}" ]
2006 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
2007 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
2013 internal_error (__FILE__, __LINE__,
2014 _("verify_gdbarch: the following are invalid ...%s"),
2019 # dump the structure
2023 /* Print out the details of the current architecture. */
2026 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
2028 const char *gdb_nm_file = "<not-defined>";
2030 #if defined (GDB_NM_FILE)
2031 gdb_nm_file = GDB_NM_FILE;
2033 fprintf_unfiltered (file,
2034 "gdbarch_dump: GDB_NM_FILE = %s\\n",
2037 function_list |
sort '-t;' -k 3 |
while do_read
2039 # First the predicate
2040 if class_is_predicate_p
2042 printf " fprintf_unfiltered (file,\n"
2043 printf " \"gdbarch_dump: gdbarch_%s_p() = %%d\\\\n\",\n" "$function"
2044 printf " gdbarch_%s_p (gdbarch));\n" "$function"
2046 # Print the corresponding value.
2047 if class_is_function_p
2049 printf " fprintf_unfiltered (file,\n"
2050 printf " \"gdbarch_dump: %s = <%%s>\\\\n\",\n" "$function"
2051 printf " host_address_to_string (gdbarch->%s));\n" "$function"
2054 case "${print}:${returntype}" in
2057 print
="core_addr_to_string_nz (gdbarch->${function})"
2061 print
="plongest (gdbarch->${function})"
2067 printf " fprintf_unfiltered (file,\n"
2068 printf " \"gdbarch_dump: %s = %s\\\\n\",\n" "$function" "$fmt"
2069 printf " %s);\n" "$print"
2073 if (gdbarch->dump_tdep != NULL)
2074 gdbarch->dump_tdep (gdbarch, file);
2082 struct gdbarch_tdep *
2083 gdbarch_tdep (struct gdbarch *gdbarch)
2085 if (gdbarch_debug >= 2)
2086 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
2087 return gdbarch->tdep;
2091 function_list |
while do_read
2093 if class_is_predicate_p
2097 printf "gdbarch_%s_p (struct gdbarch *gdbarch)\n" "$function"
2099 printf " gdb_assert (gdbarch != NULL);\n"
2100 printf " return %s;\n" "$predicate"
2103 if class_is_function_p
2106 printf "%s\n" "$returntype"
2107 if [ "x${formal}" = "xvoid" ]
2109 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2111 printf "gdbarch_%s (struct gdbarch *gdbarch, %s)\n" "$function" "$formal"
2114 printf " gdb_assert (gdbarch != NULL);\n"
2115 printf " gdb_assert (gdbarch->%s != NULL);\n" "$function"
2116 if class_is_predicate_p
&& test -n "${predefault}"
2118 # Allow a call to a function with a predicate.
2119 printf " /* Do not check predicate: %s, allow call. */\n" "$predicate"
2121 printf " if (gdbarch_debug >= 2)\n"
2122 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2123 if [ "x${actual:-}" = "x-" ] ||
[ "x${actual:-}" = "x" ]
2125 if class_is_multiarch_p
2132 if class_is_multiarch_p
2134 params
="gdbarch, ${actual}"
2139 if [ "x${returntype}" = "xvoid" ]
2141 printf " gdbarch->%s (%s);\n" "$function" "$params"
2143 printf " return gdbarch->%s (%s);\n" "$function" "$params"
2148 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2149 printf " %s gdbarch_%s_ftype %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$function" "$function"
2151 printf " gdbarch->%s = %s;\n" "$function" "$function"
2153 elif class_is_variable_p
2156 printf "%s\n" "$returntype"
2157 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2159 printf " gdb_assert (gdbarch != NULL);\n"
2160 if [ "x${invalid_p}" = "x0" ]
2162 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
2163 elif [ -n "${invalid_p}" ]
2165 printf " /* Check variable is valid. */\n"
2166 printf " gdb_assert (!(%s));\n" "$invalid_p"
2167 elif [ -n "${predefault}" ]
2169 printf " /* Check variable changed from pre-default. */\n"
2170 printf " gdb_assert (gdbarch->%s != %s);\n" "$function" "$predefault"
2172 printf " if (gdbarch_debug >= 2)\n"
2173 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2174 printf " return gdbarch->%s;\n" "$function"
2178 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2179 printf " %s %s %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$returntype" "$function"
2181 printf " gdbarch->%s = %s;\n" "$function" "$function"
2183 elif class_is_info_p
2186 printf "%s\n" "$returntype"
2187 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2189 printf " gdb_assert (gdbarch != NULL);\n"
2190 printf " if (gdbarch_debug >= 2)\n"
2191 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2192 printf " return gdbarch->%s;\n" "$function"
2197 # All the trailing guff
2201 /* Keep a registry of per-architecture data-pointers required by GDB
2208 gdbarch_data_pre_init_ftype *pre_init;
2209 gdbarch_data_post_init_ftype *post_init;
2212 struct gdbarch_data_registration
2214 struct gdbarch_data *data;
2215 struct gdbarch_data_registration *next;
2218 struct gdbarch_data_registry
2221 struct gdbarch_data_registration *registrations;
2224 struct gdbarch_data_registry gdbarch_data_registry =
2229 static struct gdbarch_data *
2230 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2231 gdbarch_data_post_init_ftype *post_init)
2233 struct gdbarch_data_registration **curr;
2235 /* Append the new registration. */
2236 for (curr = &gdbarch_data_registry.registrations;
2238 curr = &(*curr)->next);
2239 (*curr) = XNEW (struct gdbarch_data_registration);
2240 (*curr)->next = NULL;
2241 (*curr)->data = XNEW (struct gdbarch_data);
2242 (*curr)->data->index = gdbarch_data_registry.nr++;
2243 (*curr)->data->pre_init = pre_init;
2244 (*curr)->data->post_init = post_init;
2245 (*curr)->data->init_p = 1;
2246 return (*curr)->data;
2249 struct gdbarch_data *
2250 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2252 return gdbarch_data_register (pre_init, NULL);
2255 struct gdbarch_data *
2256 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2258 return gdbarch_data_register (NULL, post_init);
2261 /* Create/delete the gdbarch data vector. */
2264 alloc_gdbarch_data (struct gdbarch *gdbarch)
2266 gdb_assert (gdbarch->data == NULL);
2267 gdbarch->nr_data = gdbarch_data_registry.nr;
2268 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2271 /* Initialize the current value of the specified per-architecture
2275 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2276 struct gdbarch_data *data,
2279 gdb_assert (data->index < gdbarch->nr_data);
2280 gdb_assert (gdbarch->data[data->index] == NULL);
2281 gdb_assert (data->pre_init == NULL);
2282 gdbarch->data[data->index] = pointer;
2285 /* Return the current value of the specified per-architecture
2289 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2291 gdb_assert (data->index < gdbarch->nr_data);
2292 if (gdbarch->data[data->index] == NULL)
2294 /* The data-pointer isn't initialized, call init() to get a
2296 if (data->pre_init != NULL)
2297 /* Mid architecture creation: pass just the obstack, and not
2298 the entire architecture, as that way it isn't possible for
2299 pre-init code to refer to undefined architecture
2301 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2302 else if (gdbarch->initialized_p
2303 && data->post_init != NULL)
2304 /* Post architecture creation: pass the entire architecture
2305 (as all fields are valid), but be careful to also detect
2306 recursive references. */
2308 gdb_assert (data->init_p);
2310 gdbarch->data[data->index] = data->post_init (gdbarch);
2314 /* The architecture initialization hasn't completed - punt -
2315 hope that the caller knows what they are doing. Once
2316 deprecated_set_gdbarch_data has been initialized, this can be
2317 changed to an internal error. */
2319 gdb_assert (gdbarch->data[data->index] != NULL);
2321 return gdbarch->data[data->index];
2325 /* Keep a registry of the architectures known by GDB. */
2327 struct gdbarch_registration
2329 enum bfd_architecture bfd_architecture;
2330 gdbarch_init_ftype *init;
2331 gdbarch_dump_tdep_ftype *dump_tdep;
2332 struct gdbarch_list *arches;
2333 struct gdbarch_registration *next;
2336 static struct gdbarch_registration *gdbarch_registry = NULL;
2339 append_name (const char ***buf, int *nr, const char *name)
2341 *buf = XRESIZEVEC (const char *, *buf, *nr + 1);
2347 gdbarch_printable_names (void)
2349 /* Accumulate a list of names based on the registed list of
2352 const char **arches = NULL;
2353 struct gdbarch_registration *rego;
2355 for (rego = gdbarch_registry;
2359 const struct bfd_arch_info *ap;
2360 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2362 internal_error (__FILE__, __LINE__,
2363 _("gdbarch_architecture_names: multi-arch unknown"));
2366 append_name (&arches, &nr_arches, ap->printable_name);
2371 append_name (&arches, &nr_arches, NULL);
2377 gdbarch_register (enum bfd_architecture bfd_architecture,
2378 gdbarch_init_ftype *init,
2379 gdbarch_dump_tdep_ftype *dump_tdep)
2381 struct gdbarch_registration **curr;
2382 const struct bfd_arch_info *bfd_arch_info;
2384 /* Check that BFD recognizes this architecture */
2385 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2386 if (bfd_arch_info == NULL)
2388 internal_error (__FILE__, __LINE__,
2389 _("gdbarch: Attempt to register "
2390 "unknown architecture (%d)"),
2393 /* Check that we haven't seen this architecture before. */
2394 for (curr = &gdbarch_registry;
2396 curr = &(*curr)->next)
2398 if (bfd_architecture == (*curr)->bfd_architecture)
2399 internal_error (__FILE__, __LINE__,
2400 _("gdbarch: Duplicate registration "
2401 "of architecture (%s)"),
2402 bfd_arch_info->printable_name);
2406 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2407 bfd_arch_info->printable_name,
2408 host_address_to_string (init));
2410 (*curr) = XNEW (struct gdbarch_registration);
2411 (*curr)->bfd_architecture = bfd_architecture;
2412 (*curr)->init = init;
2413 (*curr)->dump_tdep = dump_tdep;
2414 (*curr)->arches = NULL;
2415 (*curr)->next = NULL;
2419 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2420 gdbarch_init_ftype *init)
2422 gdbarch_register (bfd_architecture, init, NULL);
2426 /* Look for an architecture using gdbarch_info. */
2428 struct gdbarch_list *
2429 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2430 const struct gdbarch_info *info)
2432 for (; arches != NULL; arches = arches->next)
2434 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2436 if (info->byte_order != arches->gdbarch->byte_order)
2438 if (info->osabi != arches->gdbarch->osabi)
2440 if (info->target_desc != arches->gdbarch->target_desc)
2448 /* Find an architecture that matches the specified INFO. Create a new
2449 architecture if needed. Return that new architecture. */
2452 gdbarch_find_by_info (struct gdbarch_info info)
2454 struct gdbarch *new_gdbarch;
2455 struct gdbarch_registration *rego;
2457 /* Fill in missing parts of the INFO struct using a number of
2458 sources: "set ..."; INFOabfd supplied; and the global
2460 gdbarch_info_fill (&info);
2462 /* Must have found some sort of architecture. */
2463 gdb_assert (info.bfd_arch_info != NULL);
2467 fprintf_unfiltered (gdb_stdlog,
2468 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2469 (info.bfd_arch_info != NULL
2470 ? info.bfd_arch_info->printable_name
2472 fprintf_unfiltered (gdb_stdlog,
2473 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2475 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2476 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2478 fprintf_unfiltered (gdb_stdlog,
2479 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2480 info.osabi, gdbarch_osabi_name (info.osabi));
2481 fprintf_unfiltered (gdb_stdlog,
2482 "gdbarch_find_by_info: info.abfd %s\n",
2483 host_address_to_string (info.abfd));
2484 fprintf_unfiltered (gdb_stdlog,
2485 "gdbarch_find_by_info: info.tdep_info %s\n",
2486 host_address_to_string (info.tdep_info));
2489 /* Find the tdep code that knows about this architecture. */
2490 for (rego = gdbarch_registry;
2493 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2498 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2499 "No matching architecture\n");
2503 /* Ask the tdep code for an architecture that matches "info". */
2504 new_gdbarch = rego->init (info, rego->arches);
2506 /* Did the tdep code like it? No. Reject the change and revert to
2507 the old architecture. */
2508 if (new_gdbarch == NULL)
2511 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2512 "Target rejected architecture\n");
2516 /* Is this a pre-existing architecture (as determined by already
2517 being initialized)? Move it to the front of the architecture
2518 list (keeping the list sorted Most Recently Used). */
2519 if (new_gdbarch->initialized_p)
2521 struct gdbarch_list **list;
2522 struct gdbarch_list *self;
2524 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2525 "Previous architecture %s (%s) selected\n",
2526 host_address_to_string (new_gdbarch),
2527 new_gdbarch->bfd_arch_info->printable_name);
2528 /* Find the existing arch in the list. */
2529 for (list = ®o->arches;
2530 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2531 list = &(*list)->next);
2532 /* It had better be in the list of architectures. */
2533 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2536 (*list) = self->next;
2537 /* Insert SELF at the front. */
2538 self->next = rego->arches;
2539 rego->arches = self;
2544 /* It's a new architecture. */
2546 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2547 "New architecture %s (%s) selected\n",
2548 host_address_to_string (new_gdbarch),
2549 new_gdbarch->bfd_arch_info->printable_name);
2551 /* Insert the new architecture into the front of the architecture
2552 list (keep the list sorted Most Recently Used). */
2554 struct gdbarch_list *self = XNEW (struct gdbarch_list);
2555 self->next = rego->arches;
2556 self->gdbarch = new_gdbarch;
2557 rego->arches = self;
2560 /* Check that the newly installed architecture is valid. Plug in
2561 any post init values. */
2562 new_gdbarch->dump_tdep = rego->dump_tdep;
2563 verify_gdbarch (new_gdbarch);
2564 new_gdbarch->initialized_p = 1;
2567 gdbarch_dump (new_gdbarch, gdb_stdlog);
2572 /* Make the specified architecture current. */
2575 set_target_gdbarch (struct gdbarch *new_gdbarch)
2577 gdb_assert (new_gdbarch != NULL);
2578 gdb_assert (new_gdbarch->initialized_p);
2579 current_inferior ()->gdbarch = new_gdbarch;
2580 gdb::observers::architecture_changed.notify (new_gdbarch);
2581 registers_changed ();
2584 /* Return the current inferior's arch. */
2587 target_gdbarch (void)
2589 return current_inferior ()->gdbarch;
2592 void _initialize_gdbarch ();
2594 _initialize_gdbarch ()
2596 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2597 Set architecture debugging."), _("\\
2598 Show architecture debugging."), _("\\
2599 When non-zero, architecture debugging is enabled."),
2602 &setdebuglist, &showdebuglist);
2608 #../move-if-change new-gdbarch.c gdbarch.c
2609 compare_new gdbarch.c