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
27 # Format of the input table
28 read="class returntype function formal actual staticdefault predefault postdefault invalid_p print garbage_at_eol"
34 # On some SH's, 'read' trims leading and trailing whitespace by
35 # default (e.g., bash), while on others (e.g., dash), it doesn't.
36 # Set IFS to empty to disable the trimming everywhere.
37 # shellcheck disable=SC2162
38 while IFS
='' read line
40 if test "${line}" = ""
43 elif test "${line}" = "#" -a "${comment}" = ""
46 elif expr "${line}" : "#" > /dev
/null
52 # The semantics of IFS varies between different SH's. Some
53 # treat ``;;' as three fields while some treat it as just two.
54 # Work around this by eliminating ``;;'' ....
55 line
="$(echo "${line}" | sed -e 's/;;/; ;/g' -e 's/;;/; ;/g')"
57 OFS
="${IFS}" ; IFS
="[;]"
58 eval read "${read}" <<EOF
63 if test -n "${garbage_at_eol:-}"
65 echo "Garbage at end-of-line in ${line}" 1>&2
70 # .... and then going back through each field and strip out those
71 # that ended up with just that space character.
74 if eval test "\"\${${r}}\" = ' '"
81 m
) staticdefault
="${predefault:-}" ;;
82 M
) staticdefault
="0" ;;
83 * ) test "${staticdefault}" || staticdefault
=0 ;;
88 case "${invalid_p:-}" in
90 if test -n "${predefault}"
92 #invalid_p="gdbarch->${function} == ${predefault}"
93 predicate
="gdbarch->${function:-} != ${predefault}"
94 elif class_is_variable_p
96 predicate
="gdbarch->${function} != 0"
97 elif class_is_function_p
99 predicate
="gdbarch->${function} != NULL"
103 echo "Predicate function ${function} with invalid_p." 1>&2
110 #NOT YET: See gdbarch.log for basic verification of
125 fallback_default_p
()
127 { [ -n "${postdefault:-}" ] && [ "x${invalid_p}" != "x0" ]; } \
128 || { [ -n "${predefault}" ] && [ "x${invalid_p}" = "x0" ]; }
131 class_is_variable_p
()
139 class_is_function_p
()
142 *f
* |
*F
* |
*m
* |
*M
* ) true
;;
147 class_is_multiarch_p
()
155 class_is_predicate_p
()
158 *F
* |
*V
* |
*M
* ) true
;;
172 # dump out/verify the doco
182 # F -> function + predicate
183 # hiding a function + predicate to test function validity
186 # V -> variable + predicate
187 # hiding a variable + predicate to test variables validity
189 # hiding something from the ``struct info'' object
190 # m -> multi-arch function
191 # hiding a multi-arch function (parameterised with the architecture)
192 # M -> multi-arch function + predicate
193 # hiding a multi-arch function + predicate to test function validity
197 # For functions, the return type; for variables, the data type
201 # For functions, the member function name; for variables, the
202 # variable name. Member function names are always prefixed with
203 # ``gdbarch_'' for name-space purity.
207 # The formal argument list. It is assumed that the formal
208 # argument list includes the actual name of each list element.
209 # A function with no arguments shall have ``void'' as the
210 # formal argument list.
214 # The list of actual arguments. The arguments specified shall
215 # match the FORMAL list given above. Functions with out
216 # arguments leave this blank.
220 # To help with the GDB startup a static gdbarch object is
221 # created. STATICDEFAULT is the value to insert into that
222 # static gdbarch object. Since this a static object only
223 # simple expressions can be used.
225 # If STATICDEFAULT is empty, zero is used.
229 # An initial value to assign to MEMBER of the freshly
230 # malloc()ed gdbarch object. After initialization, the
231 # freshly malloc()ed object is passed to the target
232 # architecture code for further updates.
234 # If PREDEFAULT is empty, zero is used.
236 # A non-empty PREDEFAULT, an empty POSTDEFAULT and a zero
237 # INVALID_P are specified, PREDEFAULT will be used as the
238 # default for the non- multi-arch target.
240 # A zero PREDEFAULT function will force the fallback to call
243 # Variable declarations can refer to ``gdbarch'' which will
244 # contain the current architecture. Care should be taken.
248 # A value to assign to MEMBER of the new gdbarch object should
249 # the target architecture code fail to change the PREDEFAULT
252 # If POSTDEFAULT is empty, no post update is performed.
254 # If both INVALID_P and POSTDEFAULT are non-empty then
255 # INVALID_P will be used to determine if MEMBER should be
256 # changed to POSTDEFAULT.
258 # If a non-empty POSTDEFAULT and a zero INVALID_P are
259 # specified, POSTDEFAULT will be used as the default for the
260 # non- multi-arch target (regardless of the value of
263 # You cannot specify both a zero INVALID_P and a POSTDEFAULT.
265 # Variable declarations can refer to ``gdbarch'' which
266 # will contain the current architecture. Care should be
271 # A predicate equation that validates MEMBER. Non-zero is
272 # returned if the code creating the new architecture failed to
273 # initialize MEMBER or the initialized the member is invalid.
274 # If POSTDEFAULT is non-empty then MEMBER will be updated to
275 # that value. If POSTDEFAULT is empty then internal_error()
278 # If INVALID_P is empty, a check that MEMBER is no longer
279 # equal to PREDEFAULT is used.
281 # The expression ``0'' disables the INVALID_P check making
282 # PREDEFAULT a legitimate value.
284 # See also PREDEFAULT and POSTDEFAULT.
288 # An optional expression that convers MEMBER to a value
289 # suitable for formatting using %s.
291 # If PRINT is empty, core_addr_to_string_nz (for CORE_ADDR)
292 # or plongest (anything else) is used.
294 garbage_at_eol
) : ;;
296 # Catches stray fields.
299 echo "Bad field ${field}"
307 # See below (DOCO) for description of each field
309 i;const struct bfd_arch_info *;bfd_arch_info;;;&bfd_default_arch_struct;;;;gdbarch_bfd_arch_info (gdbarch)->printable_name
311 i;enum bfd_endian;byte_order;;;BFD_ENDIAN_BIG
312 i;enum bfd_endian;byte_order_for_code;;;BFD_ENDIAN_BIG
314 i;enum gdb_osabi;osabi;;;GDB_OSABI_UNKNOWN
316 i;const struct target_desc *;target_desc;;;;;;;host_address_to_string (gdbarch->target_desc)
318 # Number of bits in a short or unsigned short for the target machine.
319 v;int;short_bit;;;8 * sizeof (short);2*TARGET_CHAR_BIT;;0
320 # Number of bits in an int or unsigned int for the target machine.
321 v;int;int_bit;;;8 * sizeof (int);4*TARGET_CHAR_BIT;;0
322 # Number of bits in a long or unsigned long for the target machine.
323 v;int;long_bit;;;8 * sizeof (long);4*TARGET_CHAR_BIT;;0
324 # Number of bits in a long long or unsigned long long for the target
326 v;int;long_long_bit;;;8 * sizeof (LONGEST);2*gdbarch->long_bit;;0
328 # The ABI default bit-size and format for "half", "float", "double", and
329 # "long double". These bit/format pairs should eventually be combined
330 # into a single object. For the moment, just initialize them as a pair.
331 # Each format describes both the big and little endian layouts (if
334 v;int;half_bit;;;16;2*TARGET_CHAR_BIT;;0
335 v;const struct floatformat **;half_format;;;;;floatformats_ieee_half;;pformat (gdbarch->half_format)
336 v;int;float_bit;;;8 * sizeof (float);4*TARGET_CHAR_BIT;;0
337 v;const struct floatformat **;float_format;;;;;floatformats_ieee_single;;pformat (gdbarch->float_format)
338 v;int;double_bit;;;8 * sizeof (double);8*TARGET_CHAR_BIT;;0
339 v;const struct floatformat **;double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->double_format)
340 v;int;long_double_bit;;;8 * sizeof (long double);8*TARGET_CHAR_BIT;;0
341 v;const struct floatformat **;long_double_format;;;;;floatformats_ieee_double;;pformat (gdbarch->long_double_format)
343 # The ABI default bit-size for "wchar_t". wchar_t is a built-in type
344 # starting with C++11.
345 v;int;wchar_bit;;;8 * sizeof (wchar_t);4*TARGET_CHAR_BIT;;0
346 # One if \`wchar_t' is signed, zero if unsigned.
347 v;int;wchar_signed;;;1;-1;1
349 # Returns the floating-point format to be used for values of length LENGTH.
350 # NAME, if non-NULL, is the type name, which may be used to distinguish
351 # different target formats of the same length.
352 m;const struct floatformat **;floatformat_for_type;const char *name, int length;name, length;0;default_floatformat_for_type;;0
354 # For most targets, a pointer on the target and its representation as an
355 # address in GDB have the same size and "look the same". For such a
356 # target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
357 # / addr_bit will be set from it.
359 # If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
360 # also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
361 # gdbarch_address_to_pointer as well.
363 # ptr_bit is the size of a pointer on the target
364 v;int;ptr_bit;;;8 * sizeof (void*);gdbarch->int_bit;;0
365 # addr_bit is the size of a target address as represented in gdb
366 v;int;addr_bit;;;8 * sizeof (void*);0;gdbarch_ptr_bit (gdbarch);
368 # dwarf2_addr_size is the target address size as used in the Dwarf debug
369 # info. For .debug_frame FDEs, this is supposed to be the target address
370 # size from the associated CU header, and which is equivalent to the
371 # DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
372 # Unfortunately there is no good way to determine this value. Therefore
373 # dwarf2_addr_size simply defaults to the target pointer size.
375 # dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
376 # defined using the target's pointer size so far.
378 # Note that dwarf2_addr_size only needs to be redefined by a target if the
379 # GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
380 # and if Dwarf versions < 4 need to be supported.
381 v;int;dwarf2_addr_size;;;sizeof (void*);0;gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
383 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
384 v;int;char_signed;;;1;-1;1
386 F;CORE_ADDR;read_pc;readable_regcache *regcache;regcache
387 F;void;write_pc;struct regcache *regcache, CORE_ADDR val;regcache, val
388 # Function for getting target's idea of a frame pointer. FIXME: GDB's
389 # whole scheme for dealing with "frames" and "frame pointers" needs a
391 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
393 M;enum register_status;pseudo_register_read;readable_regcache *regcache, int cookednum, gdb_byte *buf;regcache, cookednum, buf
394 # Read a register into a new struct value. If the register is wholly
395 # or partly unavailable, this should call mark_value_bytes_unavailable
396 # as appropriate. If this is defined, then pseudo_register_read will
398 M;struct value *;pseudo_register_read_value;readable_regcache *regcache, int cookednum;regcache, cookednum
399 M;void;pseudo_register_write;struct regcache *regcache, int cookednum, const gdb_byte *buf;regcache, cookednum, buf
401 v;int;num_regs;;;0;-1
402 # This macro gives the number of pseudo-registers that live in the
403 # register namespace but do not get fetched or stored on the target.
404 # These pseudo-registers may be aliases for other registers,
405 # combinations of other registers, or they may be computed by GDB.
406 v;int;num_pseudo_regs;;;0;0;;0
408 # Assemble agent expression bytecode to collect pseudo-register REG.
409 # Return -1 if something goes wrong, 0 otherwise.
410 M;int;ax_pseudo_register_collect;struct agent_expr *ax, int reg;ax, reg
412 # Assemble agent expression bytecode to push the value of pseudo-register
413 # REG on the interpreter stack.
414 # Return -1 if something goes wrong, 0 otherwise.
415 M;int;ax_pseudo_register_push_stack;struct agent_expr *ax, int reg;ax, reg
417 # Some targets/architectures can do extra processing/display of
418 # segmentation faults. E.g., Intel MPX boundary faults.
419 # Call the architecture dependent function to handle the fault.
420 # UIOUT is the output stream where the handler will place information.
421 M;void;handle_segmentation_fault;struct ui_out *uiout;uiout
423 # Some architectures can display additional information for specific
425 # UIOUT is the output stream where the handler will place information.
426 M;void;report_signal_info;struct ui_out *uiout, enum gdb_signal siggnal;uiout, siggnal
428 # GDB's standard (or well known) register numbers. These can map onto
429 # a real register or a pseudo (computed) register or not be defined at
431 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
432 v;int;sp_regnum;;;-1;-1;;0
433 v;int;pc_regnum;;;-1;-1;;0
434 v;int;ps_regnum;;;-1;-1;;0
435 v;int;fp0_regnum;;;0;-1;;0
436 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
437 m;int;stab_reg_to_regnum;int stab_regnr;stab_regnr;;no_op_reg_to_regnum;;0
438 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
439 m;int;ecoff_reg_to_regnum;int ecoff_regnr;ecoff_regnr;;no_op_reg_to_regnum;;0
440 # Convert from an sdb register number to an internal gdb register number.
441 m;int;sdb_reg_to_regnum;int sdb_regnr;sdb_regnr;;no_op_reg_to_regnum;;0
442 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
443 # Return -1 for bad REGNUM. Note: Several targets get this wrong.
444 m;int;dwarf2_reg_to_regnum;int dwarf2_regnr;dwarf2_regnr;;no_op_reg_to_regnum;;0
445 m;const char *;register_name;int regnr;regnr;;0
447 # Return the type of a register specified by the architecture. Only
448 # the register cache should call this function directly; others should
449 # use "register_type".
450 M;struct type *;register_type;int reg_nr;reg_nr
452 # Generate a dummy frame_id for THIS_FRAME assuming that the frame is
453 # a dummy frame. A dummy frame is created before an inferior call,
454 # the frame_id returned here must match the frame_id that was built
455 # for the inferior call. Usually this means the returned frame_id's
456 # stack address should match the address returned by
457 # gdbarch_push_dummy_call, and the returned frame_id's code address
458 # should match the address at which the breakpoint was set in the dummy
460 m;struct frame_id;dummy_id;struct frame_info *this_frame;this_frame;;default_dummy_id;;0
461 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
462 # deprecated_fp_regnum.
463 v;int;deprecated_fp_regnum;;;-1;-1;;0
465 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
466 v;int;call_dummy_location;;;;AT_ENTRY_POINT;;0
467 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
469 # Return true if the code of FRAME is writable.
470 m;int;code_of_frame_writable;struct frame_info *frame;frame;;default_code_of_frame_writable;;0
472 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
473 m;void;print_float_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args;;default_print_float_info;;0
474 M;void;print_vector_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args
475 # MAP a GDB RAW register number onto a simulator register number. See
476 # also include/...-sim.h.
477 m;int;register_sim_regno;int reg_nr;reg_nr;;legacy_register_sim_regno;;0
478 m;int;cannot_fetch_register;int regnum;regnum;;cannot_register_not;;0
479 m;int;cannot_store_register;int regnum;regnum;;cannot_register_not;;0
481 # Determine the address where a longjmp will land and save this address
482 # in PC. Return nonzero on success.
484 # FRAME corresponds to the longjmp frame.
485 F;int;get_longjmp_target;struct frame_info *frame, CORE_ADDR *pc;frame, pc
488 v;int;believe_pcc_promotion;;;;;;;
490 m;int;convert_register_p;int regnum, struct type *type;regnum, type;0;generic_convert_register_p;;0
491 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
492 f;void;value_to_register;struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf;frame, regnum, type, buf;0
493 # Construct a value representing the contents of register REGNUM in
494 # frame FRAME_ID, interpreted as type TYPE. The routine needs to
495 # allocate and return a struct value with all value attributes
496 # (but not the value contents) filled in.
497 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
499 m;CORE_ADDR;pointer_to_address;struct type *type, const gdb_byte *buf;type, buf;;unsigned_pointer_to_address;;0
500 m;void;address_to_pointer;struct type *type, gdb_byte *buf, CORE_ADDR addr;type, buf, addr;;unsigned_address_to_pointer;;0
501 M;CORE_ADDR;integer_to_address;struct type *type, const gdb_byte *buf;type, buf
503 # Return the return-value convention that will be used by FUNCTION
504 # to return a value of type VALTYPE. FUNCTION may be NULL in which
505 # case the return convention is computed based only on VALTYPE.
507 # If READBUF is not NULL, extract the return value and save it in this buffer.
509 # If WRITEBUF is not NULL, it contains a return value which will be
510 # stored into the appropriate register. This can be used when we want
511 # to force the value returned by a function (see the "return" command
513 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
515 # Return true if the return value of function is stored in the first hidden
516 # parameter. In theory, this feature should be language-dependent, specified
517 # by language and its ABI, such as C++. Unfortunately, compiler may
518 # implement it to a target-dependent feature. So that we need such hook here
519 # to be aware of this in GDB.
520 m;int;return_in_first_hidden_param_p;struct type *type;type;;default_return_in_first_hidden_param_p;;0
522 m;CORE_ADDR;skip_prologue;CORE_ADDR ip;ip;0;0
523 M;CORE_ADDR;skip_main_prologue;CORE_ADDR ip;ip
524 # On some platforms, a single function may provide multiple entry points,
525 # e.g. one that is used for function-pointer calls and a different one
526 # that is used for direct function calls.
527 # In order to ensure that breakpoints set on the function will trigger
528 # no matter via which entry point the function is entered, a platform
529 # may provide the skip_entrypoint callback. It is called with IP set
530 # to the main entry point of a function (as determined by the symbol table),
531 # and should return the address of the innermost entry point, where the
532 # actual breakpoint needs to be set. Note that skip_entrypoint is used
533 # by GDB common code even when debugging optimized code, where skip_prologue
535 M;CORE_ADDR;skip_entrypoint;CORE_ADDR ip;ip
537 f;int;inner_than;CORE_ADDR lhs, CORE_ADDR rhs;lhs, rhs;0;0
538 m;const gdb_byte *;breakpoint_from_pc;CORE_ADDR *pcptr, int *lenptr;pcptr, lenptr;0;default_breakpoint_from_pc;;0
540 # Return the breakpoint kind for this target based on *PCPTR.
541 m;int;breakpoint_kind_from_pc;CORE_ADDR *pcptr;pcptr;;0;
543 # Return the software breakpoint from KIND. KIND can have target
544 # specific meaning like the Z0 kind parameter.
545 # SIZE is set to the software breakpoint's length in memory.
546 m;const gdb_byte *;sw_breakpoint_from_kind;int kind, int *size;kind, size;;NULL;;0
548 # Return the breakpoint kind for this target based on the current
549 # processor state (e.g. the current instruction mode on ARM) and the
550 # *PCPTR. In default, it is gdbarch->breakpoint_kind_from_pc.
551 m;int;breakpoint_kind_from_current_state;struct regcache *regcache, CORE_ADDR *pcptr;regcache, pcptr;0;default_breakpoint_kind_from_current_state;;0
553 M;CORE_ADDR;adjust_breakpoint_address;CORE_ADDR bpaddr;bpaddr
554 m;int;memory_insert_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_insert_breakpoint;;0
555 m;int;memory_remove_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_remove_breakpoint;;0
556 v;CORE_ADDR;decr_pc_after_break;;;0;;;0
558 # A function can be addressed by either it's "pointer" (possibly a
559 # descriptor address) or "entry point" (first executable instruction).
560 # The method "convert_from_func_ptr_addr" converting the former to the
561 # latter. gdbarch_deprecated_function_start_offset is being used to implement
562 # a simplified subset of that functionality - the function's address
563 # corresponds to the "function pointer" and the function's start
564 # corresponds to the "function entry point" - and hence is redundant.
566 v;CORE_ADDR;deprecated_function_start_offset;;;0;;;0
568 # Return the remote protocol register number associated with this
569 # register. Normally the identity mapping.
570 m;int;remote_register_number;int regno;regno;;default_remote_register_number;;0
572 # Fetch the target specific address used to represent a load module.
573 F;CORE_ADDR;fetch_tls_load_module_address;struct objfile *objfile;objfile
575 # Return the thread-local address at OFFSET in the thread-local
576 # storage for the thread PTID and the shared library or executable
577 # file given by LM_ADDR. If that block of thread-local storage hasn't
578 # been allocated yet, this function may throw an error. LM_ADDR may
579 # be zero for statically linked multithreaded inferiors.
581 M;CORE_ADDR;get_thread_local_address;ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset;ptid, lm_addr, offset
583 v;CORE_ADDR;frame_args_skip;;;0;;;0
584 m;CORE_ADDR;unwind_pc;struct frame_info *next_frame;next_frame;;default_unwind_pc;;0
585 m;CORE_ADDR;unwind_sp;struct frame_info *next_frame;next_frame;;default_unwind_sp;;0
586 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
587 # frame-base. Enable frame-base before frame-unwind.
588 F;int;frame_num_args;struct frame_info *frame;frame
590 M;CORE_ADDR;frame_align;CORE_ADDR address;address
591 m;int;stabs_argument_has_addr;struct type *type;type;;default_stabs_argument_has_addr;;0
592 v;int;frame_red_zone_size
594 m;CORE_ADDR;convert_from_func_ptr_addr;CORE_ADDR addr, struct target_ops *targ;addr, targ;;convert_from_func_ptr_addr_identity;;0
595 # On some machines there are bits in addresses which are not really
596 # part of the address, but are used by the kernel, the hardware, etc.
597 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
598 # we get a "real" address such as one would find in a symbol table.
599 # This is used only for addresses of instructions, and even then I'm
600 # not sure it's used in all contexts. It exists to deal with there
601 # being a few stray bits in the PC which would mislead us, not as some
602 # sort of generic thing to handle alignment or segmentation (it's
603 # possible it should be in TARGET_READ_PC instead).
604 m;CORE_ADDR;addr_bits_remove;CORE_ADDR addr;addr;;core_addr_identity;;0
606 # On some machines, not all bits of an address word are significant.
607 # For example, on AArch64, the top bits of an address known as the "tag"
608 # are ignored by the kernel, the hardware, etc. and can be regarded as
609 # additional data associated with the address.
610 v;int;significant_addr_bit;;;;;;0
612 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
613 # indicates if the target needs software single step. An ISA method to
616 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
617 # target can single step. If not, then implement single step using breakpoints.
619 # Return a vector of addresses on which the software single step
620 # breakpoints should be inserted. NULL means software single step is
622 # Multiple breakpoints may be inserted for some instructions such as
623 # conditional branch. However, each implementation must always evaluate
624 # the condition and only put the breakpoint at the branch destination if
625 # the condition is true, so that we ensure forward progress when stepping
626 # past a conditional branch to self.
627 F;std::vector<CORE_ADDR>;software_single_step;struct regcache *regcache;regcache
629 # Return non-zero if the processor is executing a delay slot and a
630 # further single-step is needed before the instruction finishes.
631 M;int;single_step_through_delay;struct frame_info *frame;frame
632 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
633 # disassembler. Perhaps objdump can handle it?
634 f;int;print_insn;bfd_vma vma, struct disassemble_info *info;vma, info;;default_print_insn;;0
635 f;CORE_ADDR;skip_trampoline_code;struct frame_info *frame, CORE_ADDR pc;frame, pc;;generic_skip_trampoline_code;;0
638 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
639 # evaluates non-zero, this is the address where the debugger will place
640 # a step-resume breakpoint to get us past the dynamic linker.
641 m;CORE_ADDR;skip_solib_resolver;CORE_ADDR pc;pc;;generic_skip_solib_resolver;;0
642 # Some systems also have trampoline code for returning from shared libs.
643 m;int;in_solib_return_trampoline;CORE_ADDR pc, const char *name;pc, name;;generic_in_solib_return_trampoline;;0
645 # Return true if PC lies inside an indirect branch thunk.
646 m;bool;in_indirect_branch_thunk;CORE_ADDR pc;pc;;default_in_indirect_branch_thunk;;0
648 # A target might have problems with watchpoints as soon as the stack
649 # frame of the current function has been destroyed. This mostly happens
650 # as the first action in a function's epilogue. stack_frame_destroyed_p()
651 # is defined to return a non-zero value if either the given addr is one
652 # instruction after the stack destroying instruction up to the trailing
653 # return instruction or if we can figure out that the stack frame has
654 # already been invalidated regardless of the value of addr. Targets
655 # which don't suffer from that problem could just let this functionality
657 m;int;stack_frame_destroyed_p;CORE_ADDR addr;addr;0;generic_stack_frame_destroyed_p;;0
658 # Process an ELF symbol in the minimal symbol table in a backend-specific
659 # way. Normally this hook is supposed to do nothing, however if required,
660 # then this hook can be used to apply tranformations to symbols that are
661 # considered special in some way. For example the MIPS backend uses it
662 # to interpret \`st_other' information to mark compressed code symbols so
663 # that they can be treated in the appropriate manner in the processing of
664 # the main symbol table and DWARF-2 records.
665 F;void;elf_make_msymbol_special;asymbol *sym, struct minimal_symbol *msym;sym, msym
666 f;void;coff_make_msymbol_special;int val, struct minimal_symbol *msym;val, msym;;default_coff_make_msymbol_special;;0
667 # Process a symbol in the main symbol table in a backend-specific way.
668 # Normally this hook is supposed to do nothing, however if required,
669 # then this hook can be used to apply tranformations to symbols that
670 # are considered special in some way. This is currently used by the
671 # MIPS backend to make sure compressed code symbols have the ISA bit
672 # set. This in turn is needed for symbol values seen in GDB to match
673 # the values used at the runtime by the program itself, for function
674 # and label references.
675 f;void;make_symbol_special;struct symbol *sym, struct objfile *objfile;sym, objfile;;default_make_symbol_special;;0
676 # Adjust the address retrieved from a DWARF-2 record other than a line
677 # entry in a backend-specific way. Normally this hook is supposed to
678 # return the address passed unchanged, however if that is incorrect for
679 # any reason, then this hook can be used to fix the address up in the
680 # required manner. This is currently used by the MIPS backend to make
681 # sure addresses in FDE, range records, etc. referring to compressed
682 # code have the ISA bit set, matching line information and the symbol
684 f;CORE_ADDR;adjust_dwarf2_addr;CORE_ADDR pc;pc;;default_adjust_dwarf2_addr;;0
685 # Adjust the address updated by a line entry in a backend-specific way.
686 # Normally this hook is supposed to return the address passed unchanged,
687 # however in the case of inconsistencies in these records, this hook can
688 # be used to fix them up in the required manner. This is currently used
689 # by the MIPS backend to make sure all line addresses in compressed code
690 # are presented with the ISA bit set, which is not always the case. This
691 # in turn ensures breakpoint addresses are correctly matched against the
693 f;CORE_ADDR;adjust_dwarf2_line;CORE_ADDR addr, int rel;addr, rel;;default_adjust_dwarf2_line;;0
694 v;int;cannot_step_breakpoint;;;0;0;;0
695 # See comment in target.h about continuable, steppable and
696 # non-steppable watchpoints.
697 v;int;have_nonsteppable_watchpoint;;;0;0;;0
698 F;int;address_class_type_flags;int byte_size, int dwarf2_addr_class;byte_size, dwarf2_addr_class
699 M;const char *;address_class_type_flags_to_name;int type_flags;type_flags
700 # Execute vendor-specific DWARF Call Frame Instruction. OP is the instruction.
701 # FS are passed from the generic execute_cfa_program function.
702 m;bool;execute_dwarf_cfa_vendor_op;gdb_byte op, struct dwarf2_frame_state *fs;op, fs;;default_execute_dwarf_cfa_vendor_op;;0
704 # Return the appropriate type_flags for the supplied address class.
705 # This function should return 1 if the address class was recognized and
706 # type_flags was set, zero otherwise.
707 M;int;address_class_name_to_type_flags;const char *name, int *type_flags_ptr;name, type_flags_ptr
708 # Is a register in a group
709 m;int;register_reggroup_p;int regnum, struct reggroup *reggroup;regnum, reggroup;;default_register_reggroup_p;;0
710 # Fetch the pointer to the ith function argument.
711 F;CORE_ADDR;fetch_pointer_argument;struct frame_info *frame, int argi, struct type *type;frame, argi, type
713 # Iterate over all supported register notes in a core file. For each
714 # supported register note section, the iterator must call CB and pass
715 # CB_DATA unchanged. If REGCACHE is not NULL, the iterator can limit
716 # the supported register note sections based on the current register
717 # values. Otherwise it should enumerate all supported register note
719 M;void;iterate_over_regset_sections;iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache;cb, cb_data, regcache
721 # Create core file notes
722 M;char *;make_corefile_notes;bfd *obfd, int *note_size;obfd, note_size
724 # Find core file memory regions
725 M;int;find_memory_regions;find_memory_region_ftype func, void *data;func, data
727 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
728 # core file into buffer READBUF with length LEN. Return the number of bytes read
729 # (zero indicates failure).
730 # failed, otherwise, return the red length of READBUF.
731 M;ULONGEST;core_xfer_shared_libraries;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
733 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
734 # libraries list from core file into buffer READBUF with length LEN.
735 # Return the number of bytes read (zero indicates failure).
736 M;ULONGEST;core_xfer_shared_libraries_aix;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
738 # How the core target converts a PTID from a core file to a string.
739 M;std::string;core_pid_to_str;ptid_t ptid;ptid
741 # How the core target extracts the name of a thread from a core file.
742 M;const char *;core_thread_name;struct thread_info *thr;thr
744 # Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information
745 # from core file into buffer READBUF with length LEN. Return the number
746 # of bytes read (zero indicates EOF, a negative value indicates failure
).
747 M
;LONGEST
;core_xfer_siginfo
;gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
; readbuf
, offset
, len
749 # BFD target to use when generating a core file.
750 V
;const char
*;gcore_bfd_target
;;;0;0;;;pstring
(gdbarch-
>gcore_bfd_target
)
752 # If the elements of C++ vtables are in-place function descriptors rather
753 # than normal function pointers (which may point to code or a descriptor),
755 v
;int
;vtable_function_descriptors
;;;0;0;;0
757 # Set if the least significant bit of the delta is used instead of the least
758 # significant bit of the pfn for pointers to virtual member functions.
759 v
;int
;vbit_in_delta
;;;0;0;;0
761 # Advance PC to next instruction in order to skip a permanent breakpoint.
762 f
;void
;skip_permanent_breakpoint
;struct regcache
*regcache
;regcache
;default_skip_permanent_breakpoint
;default_skip_permanent_breakpoint
;;0
764 # The maximum length of an instruction on this architecture in bytes.
765 V
;ULONGEST
;max_insn_length
;;;0;0
767 # Copy the instruction at FROM to TO, and make any adjustments
768 # necessary to single-step it at that address.
770 # REGS holds the state the thread's registers will have before
771 # executing the copied instruction; the PC in REGS will refer to FROM,
772 # not the copy at TO. The caller should update it to point at TO later.
774 # Return a pointer to data of the architecture's choice to be passed
775 # to gdbarch_displaced_step_fixup.
777 # For a general explanation of displaced stepping and how GDB uses it,
778 # see the comments in infrun.c.
780 # The TO area is only guaranteed to have space for
781 # gdbarch_max_insn_length (arch) bytes, so this function must not
782 # write more bytes than that to that area.
784 # If you do not provide this function, GDB assumes that the
785 # architecture does not support displaced stepping.
787 # If the instruction cannot execute out of line, return NULL. The
788 # core falls back to stepping past the instruction in-line instead in
790 M
;displaced_step_closure_up
;displaced_step_copy_insn
;CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;from
, to
, regs
792 # Return true if GDB should use hardware single-stepping to execute
793 # the displaced instruction identified by CLOSURE. If false,
794 # GDB will simply restart execution at the displaced instruction
795 # location, and it is up to the target to ensure GDB will receive
796 # control again (e.g. by placing a software breakpoint instruction
797 # into the displaced instruction buffer).
799 # The default implementation returns false on all targets that
800 # provide a gdbarch_software_single_step routine, and true otherwise.
801 m
;int
;displaced_step_hw_singlestep
;struct displaced_step_closure
*closure
;closure
;;default_displaced_step_hw_singlestep
;;0
803 # Fix up the state resulting from successfully single-stepping a
804 # displaced instruction, to give the result we would have gotten from
805 # stepping the instruction in its original location.
807 # REGS is the register state resulting from single-stepping the
808 # displaced instruction.
810 # CLOSURE is the result from the matching call to
811 # gdbarch_displaced_step_copy_insn.
813 # If you provide gdbarch_displaced_step_copy_insn.but not this
814 # function, then GDB assumes that no fixup is needed after
815 # single-stepping the instruction.
817 # For a general explanation of displaced stepping and how GDB uses it,
818 # see the comments in infrun.c.
819 M
;void
;displaced_step_fixup
;struct displaced_step_closure
*closure
, CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;closure
, from
, to
, regs
;;NULL
821 # Return the address of an appropriate place to put displaced
822 # instructions while we step over them. There need only be one such
823 # place, since we're only stepping one thread over a breakpoint at a
826 # For a general explanation of displaced stepping and how GDB uses it,
827 # see the comments in infrun.c.
828 m
;CORE_ADDR
;displaced_step_location
;void
;;;NULL
;;(! gdbarch-
>displaced_step_location
) != (! gdbarch-
>displaced_step_copy_insn
)
830 # Relocate an instruction to execute at a different address. OLDLOC
831 # is the address in the inferior memory where the instruction to
832 # relocate is currently at. On input, TO points to the destination
833 # where we want the instruction to be copied (and possibly adjusted)
834 # to. On output, it points to one past the end of the resulting
835 # instruction(s). The effect of executing the instruction at TO shall
836 # be the same as if executing it at FROM. For example, call
837 # instructions that implicitly push the return address on the stack
838 # should be adjusted to return to the instruction after OLDLOC;
839 # relative branches, and other PC-relative instructions need the
840 # offset adjusted; etc.
841 M
;void
;relocate_instruction
;CORE_ADDR
*to
, CORE_ADDR from
;to
, from
;;NULL
843 # Refresh overlay mapped state for section OSECT.
844 F
;void
;overlay_update
;struct obj_section
*osect
;osect
846 M
;const struct target_desc
*;core_read_description
;struct target_ops
*target
, bfd
*abfd
;target
, abfd
848 # Set if the address in N_SO or N_FUN stabs may be zero.
849 v
;int
;sofun_address_maybe_missing
;;;0;0;;0
851 # Parse the instruction at ADDR storing in the record execution log
852 # the registers REGCACHE and memory ranges that will be affected when
853 # the instruction executes, along with their current values.
854 # Return -1 if something goes wrong, 0 otherwise.
855 M
;int
;process_record
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
857 # Save process state after a signal.
858 # Return -1 if something goes wrong, 0 otherwise.
859 M
;int
;process_record_signal
;struct regcache
*regcache
, enum gdb_signal signal
;regcache
, signal
861 # Signal translation: translate inferior's signal (target's) number
862 # into GDB's representation. The implementation of this method must
863 # be host independent. IOW, don't rely on symbols of the NAT_FILE
864 # header (the nm-*.h files), the host <signal.h> header, or similar
865 # headers. This is mainly used when cross-debugging core files ---
866 # "Live" targets hide the translation behind the target interface
867 # (target_wait, target_resume, etc.).
868 M
;enum gdb_signal
;gdb_signal_from_target
;int signo
;signo
870 # Signal translation: translate the GDB's internal signal number into
871 # the inferior's signal (target's) representation. The implementation
872 # of this method must be host independent. IOW, don't rely on symbols
873 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
874 # header, or similar headers.
875 # Return the target signal number if found, or -1 if the GDB internal
876 # signal number is invalid.
877 M
;int
;gdb_signal_to_target
;enum gdb_signal signal
;signal
879 # Extra signal info inspection.
881 # Return a type suitable to inspect extra signal information.
882 M
;struct
type *;get_siginfo_type
;void
;
884 # Record architecture-specific information from the symbol table.
885 M
;void
;record_special_symbol
;struct objfile
*objfile
, asymbol
*sym
;objfile
, sym
887 # Function for the 'catch syscall' feature.
889 # Get architecture-specific system calls information from registers.
890 M
;LONGEST
;get_syscall_number
;thread_info
*thread
;thread
892 # The filename of the XML syscall for this architecture.
893 v
;const char
*;xml_syscall_file
;;;0;0;;0;pstring
(gdbarch-
>xml_syscall_file
)
895 # Information about system calls from this architecture
896 v
;struct syscalls_info
*;syscalls_info
;;;0;0;;0;host_address_to_string
(gdbarch-
>syscalls_info
)
898 # SystemTap related fields and functions.
900 # A NULL-terminated array of prefixes used to mark an integer constant
901 # on the architecture's assembly.
902 # For example, on x86 integer constants are written as:
904 # \$10 ;; integer constant 10
906 # in this case, this prefix would be the character \`\$\'.
907 v
;const char
*const
*;stap_integer_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_prefixes
)
909 # A NULL-terminated array of suffixes used to mark an integer constant
910 # on the architecture's assembly.
911 v
;const char
*const
*;stap_integer_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_suffixes
)
913 # A NULL-terminated array of prefixes used to mark a register name on
914 # the architecture's assembly.
915 # For example, on x86 the register name is written as:
917 # \%eax ;; register eax
919 # in this case, this prefix would be the character \`\%\'.
920 v
;const char
*const
*;stap_register_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_prefixes
)
922 # A NULL-terminated array of suffixes used to mark a register name on
923 # the architecture's assembly.
924 v
;const char
*const
*;stap_register_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_suffixes
)
926 # A NULL-terminated array of prefixes used to mark a register
927 # indirection on the architecture's assembly.
928 # For example, on x86 the register indirection is written as:
930 # \(\%eax\) ;; indirecting eax
932 # in this case, this prefix would be the charater \`\(\'.
934 # Please note that we use the indirection prefix also for register
935 # displacement, e.g., \`4\(\%eax\)\' on x86.
936 v
;const char
*const
*;stap_register_indirection_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_prefixes
)
938 # A NULL-terminated array of suffixes used to mark a register
939 # indirection on the architecture's assembly.
940 # For example, on x86 the register indirection is written as:
942 # \(\%eax\) ;; indirecting eax
944 # in this case, this prefix would be the charater \`\)\'.
946 # Please note that we use the indirection suffix also for register
947 # displacement, e.g., \`4\(\%eax\)\' on x86.
948 v
;const char
*const
*;stap_register_indirection_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_suffixes
)
950 # Prefix(es) used to name a register using GDB's nomenclature.
952 # For example, on PPC a register is represented by a number in the assembly
953 # language (e.g., \`10\' is the 10th general-purpose register). However,
954 # inside GDB this same register has an \`r\' appended to its name, so the 10th
955 # register would be represented as \`r10\' internally.
956 v
;const char
*;stap_gdb_register_prefix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_prefix
)
958 # Suffix used to name a register using GDB's nomenclature.
959 v
;const char
*;stap_gdb_register_suffix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_suffix
)
961 # Check if S is a single operand.
963 # Single operands can be:
964 # \- Literal integers, e.g. \`\$10\' on x86
965 # \- Register access, e.g. \`\%eax\' on x86
966 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
967 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
969 # This function should check for these patterns on the string
970 # and return 1 if some were found, or zero otherwise. Please try to match
971 # as much info as you can from the string, i.e., if you have to match
972 # something like \`\(\%\', do not match just the \`\(\'.
973 M
;int
;stap_is_single_operand
;const char
*s
;s
975 # Function used to handle a "special case" in the parser.
977 # A "special case" is considered to be an unknown token, i.e., a token
978 # that the parser does not know how to parse. A good example of special
979 # case would be ARM's register displacement syntax:
981 # [R0, #4] ;; displacing R0 by 4
983 # Since the parser assumes that a register displacement is of the form:
985 # <number> <indirection_prefix> <register_name> <indirection_suffix>
987 # it means that it will not be able to recognize and parse this odd syntax.
988 # Therefore, we should add a special case function that will handle this token.
990 # This function should generate the proper expression form of the expression
991 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
992 # and so on). It should also return 1 if the parsing was successful, or zero
993 # if the token was not recognized as a special token (in this case, returning
994 # zero means that the special parser is deferring the parsing to the generic
995 # parser), and should advance the buffer pointer (p->arg).
996 M
;int
;stap_parse_special_token
;struct stap_parse_info
*p
;p
998 # Perform arch-dependent adjustments to a register name.
1000 # In very specific situations, it may be necessary for the register
1001 # name present in a SystemTap probe's argument to be handled in a
1002 # special way. For example, on i386, GCC may over-optimize the
1003 # register allocation and use smaller registers than necessary. In
1004 # such cases, the client that is reading and evaluating the SystemTap
1005 # probe (ourselves) will need to actually fetch values from the wider
1006 # version of the register in question.
1008 # To illustrate the example, consider the following probe argument
1013 # This argument says that its value can be found at the %ax register,
1014 # which is a 16-bit register. However, the argument's prefix says
1015 # that its type is "uint32_t", which is 32-bit in size. Therefore, in
1016 # this case, GDB should actually fetch the probe's value from register
1017 # %eax, not %ax. In this scenario, this function would actually
1018 # replace the register name from %ax to %eax.
1020 # The rationale for this can be found at PR breakpoints/24541.
1021 M
;std
::string
;stap_adjust_register
;struct stap_parse_info
*p
, const std
::string \
®name
, int regnum
;p
, regname
, regnum
1023 # DTrace related functions.
1025 # The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
1026 # NARG must be >= 0.
1027 M
;void
;dtrace_parse_probe_argument
;struct expr_builder
*builder
, int narg
;builder
, narg
1029 # True if the given ADDR does not contain the instruction sequence
1030 # corresponding to a disabled DTrace is-enabled probe.
1031 M
;int
;dtrace_probe_is_enabled
;CORE_ADDR addr
;addr
1033 # Enable a DTrace is-enabled probe at ADDR.
1034 M
;void
;dtrace_enable_probe
;CORE_ADDR addr
;addr
1036 # Disable a DTrace is-enabled probe at ADDR.
1037 M
;void
;dtrace_disable_probe
;CORE_ADDR addr
;addr
1039 # True if the list of shared libraries is one and only for all
1040 # processes, as opposed to a list of shared libraries per inferior.
1041 # This usually means that all processes, although may or may not share
1042 # an address space, will see the same set of symbols at the same
1044 v
;int
;has_global_solist
;;;0;0;;0
1046 # On some targets, even though each inferior has its own private
1047 # address space, the debug interface takes care of making breakpoints
1048 # visible to all address spaces automatically. For such cases,
1049 # this property should be set to true.
1050 v
;int
;has_global_breakpoints
;;;0;0;;0
1052 # True if inferiors share an address space (e.g., uClinux).
1053 m
;int
;has_shared_address_space
;void
;;;default_has_shared_address_space
;;0
1055 # True if a fast tracepoint can be set at an address.
1056 m
;int
;fast_tracepoint_valid_at
;CORE_ADDR addr
, std
::string
*msg
;addr
, msg
;;default_fast_tracepoint_valid_at
;;0
1058 # Guess register state based on tracepoint location. Used for tracepoints
1059 # where no registers have been collected, but there's only one location,
1060 # allowing us to guess the PC value, and perhaps some other registers.
1061 # On entry, regcache has all registers marked as unavailable.
1062 m
;void
;guess_tracepoint_registers
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
;;default_guess_tracepoint_registers
;;0
1064 # Return the "auto" target charset.
1065 f
;const char
*;auto_charset
;void
;;default_auto_charset
;default_auto_charset
;;0
1066 # Return the "auto" target wide charset.
1067 f
;const char
*;auto_wide_charset
;void
;;default_auto_wide_charset
;default_auto_wide_charset
;;0
1069 # If non-empty, this is a file extension that will be opened in place
1070 # of the file extension reported by the shared library list.
1072 # This is most useful for toolchains that use a post-linker tool,
1073 # where the names of the files run on the target differ in extension
1074 # compared to the names of the files GDB should load for debug info.
1075 v
;const char
*;solib_symbols_extension
;;;;;;;pstring
(gdbarch-
>solib_symbols_extension
)
1077 # If true, the target OS has DOS-based file system semantics. That
1078 # is, absolute paths include a drive name, and the backslash is
1079 # considered a directory separator.
1080 v
;int
;has_dos_based_file_system
;;;0;0;;0
1082 # Generate bytecodes to collect the return address in a frame.
1083 # Since the bytecodes run on the target, possibly with GDB not even
1084 # connected, the full unwinding machinery is not available, and
1085 # typically this function will issue bytecodes for one or more likely
1086 # places that the return address may be found.
1087 m
;void
;gen_return_address
;struct agent_expr
*ax
, struct axs_value
*value
, CORE_ADDR scope
;ax
, value
, scope
;;default_gen_return_address
;;0
1089 # Implement the "info proc" command.
1090 M
;void
;info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1092 # Implement the "info proc" command for core files. Noe that there
1093 # are two "info_proc"-like methods on gdbarch -- one for core files,
1094 # one for live targets.
1095 M
;void
;core_info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1097 # Iterate over all objfiles in the order that makes the most sense
1098 # for the architecture to make global symbol searches.
1100 # CB is a callback function where OBJFILE is the objfile to be searched,
1101 # and CB_DATA a pointer to user-defined data (the same data that is passed
1102 # when calling this gdbarch method). The iteration stops if this function
1105 # CB_DATA is a pointer to some user-defined data to be passed to
1108 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1109 # inspected when the symbol search was requested.
1110 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
1112 # Ravenscar arch-dependent ops.
1113 v
;struct ravenscar_arch_ops
*;ravenscar_ops
;;;NULL
;NULL
;;0;host_address_to_string
(gdbarch-
>ravenscar_ops
)
1115 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1116 m
;int
;insn_is_call
;CORE_ADDR addr
;addr
;;default_insn_is_call
;;0
1118 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1119 m
;int
;insn_is_ret
;CORE_ADDR addr
;addr
;;default_insn_is_ret
;;0
1121 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1122 m
;int
;insn_is_jump
;CORE_ADDR addr
;addr
;;default_insn_is_jump
;;0
1124 # Return true if there's a program/permanent breakpoint planted in
1125 # memory at ADDRESS, return false otherwise.
1126 m
;bool
;program_breakpoint_here_p
;CORE_ADDR address
;address
;;default_program_breakpoint_here_p
;;0
1128 # Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
1129 # Return 0 if *READPTR is already at the end of the buffer.
1130 # Return -1 if there is insufficient buffer for a whole entry.
1131 # Return 1 if an entry was read into *TYPEP and *VALP.
1132 M
;int
;auxv_parse
;gdb_byte
**readptr
, gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
;readptr
, endptr
, typep
, valp
1134 # Print the description of a single auxv entry described by TYPE and VAL
1136 m
;void
;print_auxv_entry
;struct ui_file
*file, CORE_ADDR
type, CORE_ADDR val
;file, type, val
;;default_print_auxv_entry
;;0
1138 # Find the address range of the current inferior's vsyscall/vDSO, and
1139 # write it to *RANGE. If the vsyscall's length can't be determined, a
1140 # range with zero length is returned. Returns true if the vsyscall is
1141 # found, false otherwise.
1142 m
;int
;vsyscall_range
;struct mem_range
*range
;range
;;default_vsyscall_range
;;0
1144 # Allocate SIZE bytes of PROT protected page aligned memory in inferior.
1145 # PROT has GDB_MMAP_PROT_* bitmask format.
1146 # Throw an error if it is not possible. Returned address is always valid.
1147 f
;CORE_ADDR
;infcall_mmap
;CORE_ADDR size
, unsigned prot
;size
, prot
;;default_infcall_mmap
;;0
1149 # Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
1150 # Print a warning if it is not possible.
1151 f
;void
;infcall_munmap
;CORE_ADDR addr
, CORE_ADDR size
;addr
, size
;;default_infcall_munmap
;;0
1153 # Return string (caller has to use xfree for it) with options for GCC
1154 # to produce code for this target, typically "-m64", "-m32" or "-m31".
1155 # These options are put before CU's DW_AT_producer compilation options so that
1156 # they can override it.
1157 m
;std
::string
;gcc_target_options
;void
;;;default_gcc_target_options
;;0
1159 # Return a regular expression that matches names used by this
1160 # architecture in GNU configury triplets. The result is statically
1161 # allocated and must not be freed. The default implementation simply
1162 # returns the BFD architecture name, which is correct in nearly every
1164 m
;const char
*;gnu_triplet_regexp
;void
;;;default_gnu_triplet_regexp
;;0
1166 # Return the size in 8-bit bytes of an addressable memory unit on this
1167 # architecture. This corresponds to the number of 8-bit bytes associated to
1168 # each address in memory.
1169 m
;int
;addressable_memory_unit_size
;void
;;;default_addressable_memory_unit_size
;;0
1171 # Functions for allowing a target to modify its disassembler options.
1172 v
;const char
*;disassembler_options_implicit
;;;0;0;;0;pstring
(gdbarch-
>disassembler_options_implicit
)
1173 v
;char
**;disassembler_options
;;;0;0;;0;pstring_ptr
(gdbarch-
>disassembler_options
)
1174 v
;const disasm_options_and_args_t
*;valid_disassembler_options
;;;0;0;;0;host_address_to_string
(gdbarch-
>valid_disassembler_options
)
1176 # Type alignment override method. Return the architecture specific
1177 # alignment required for TYPE. If there is no special handling
1178 # required for TYPE then return the value 0, GDB will then apply the
1179 # default rules as laid out in gdbtypes.c:type_align.
1180 m
;ULONGEST
;type_align
;struct
type *type;type;;default_type_align
;;0
1182 # Return a string containing any flags for the given PC in the given FRAME.
1183 f
;std
::string
;get_pc_address_flags
;frame_info
*frame
, CORE_ADDR pc
;frame
, pc
;;default_get_pc_address_flags
;;0
1192 function_list |
while do_read
1195 ${class} ${returntype:-} ${function} (${formal:-})
1199 eval echo "\" ${r}=\${${r}}\""
1201 if class_is_predicate_p
&& fallback_default_p
1203 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1207 if [ "x${invalid_p}" = "x0" ] && [ -n "${postdefault}" ]
1209 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1213 if class_is_multiarch_p
1215 if class_is_predicate_p
; then :
1216 elif test "x${predefault}" = "x"
1218 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1232 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1235 /* Dynamic architecture support for GDB, the GNU debugger.
1237 Copyright (C) 1998-2020 Free Software Foundation, Inc.
1239 This file is part of GDB.
1241 This program is free software; you can redistribute it and/or modify
1242 it under the terms of the GNU General Public License as published by
1243 the Free Software Foundation; either version 3 of the License, or
1244 (at your option) any later version.
1246 This program is distributed in the hope that it will be useful,
1247 but WITHOUT ANY WARRANTY; without even the implied warranty of
1248 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1249 GNU General Public License for more details.
1251 You should have received a copy of the GNU General Public License
1252 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1254 /* This file was created with the aid of \`\`gdbarch.sh''. */
1263 exec > new-gdbarch.h
1271 #include "dis-asm.h"
1272 #include "gdb_obstack.h"
1281 struct minimal_symbol;
1285 struct disassemble_info;
1288 struct bp_target_info;
1294 struct stap_parse_info;
1295 struct expr_builder;
1296 struct ravenscar_arch_ops;
1298 struct syscalls_info;
1302 #include "regcache.h"
1304 /* The architecture associated with the inferior through the
1305 connection to the target.
1307 The architecture vector provides some information that is really a
1308 property of the inferior, accessed through a particular target:
1309 ptrace operations; the layout of certain RSP packets; the solib_ops
1310 vector; etc. To differentiate architecture accesses to
1311 per-inferior/target properties from
1312 per-thread/per-frame/per-objfile properties, accesses to
1313 per-inferior/target properties should be made through this
1316 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1317 extern struct gdbarch *target_gdbarch (void);
1319 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1322 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1323 (struct objfile *objfile, void *cb_data);
1325 /* Callback type for regset section iterators. The callback usually
1326 invokes the REGSET's supply or collect method, to which it must
1327 pass a buffer - for collects this buffer will need to be created using
1328 COLLECT_SIZE, for supply the existing buffer being read from should
1329 be at least SUPPLY_SIZE. SECT_NAME is a BFD section name, and HUMAN_NAME
1330 is used for diagnostic messages. CB_DATA should have been passed
1331 unchanged through the iterator. */
1333 typedef void (iterate_over_regset_sections_cb)
1334 (const char *sect_name, int supply_size, int collect_size,
1335 const struct regset *regset, const char *human_name, void *cb_data);
1337 /* For a function call, does the function return a value using a
1338 normal value return or a structure return - passing a hidden
1339 argument pointing to storage. For the latter, there are two
1340 cases: language-mandated structure return and target ABI
1341 structure return. */
1343 enum function_call_return_method
1345 /* Standard value return. */
1346 return_method_normal = 0,
1348 /* Language ABI structure return. This is handled
1349 by passing the return location as the first parameter to
1350 the function, even preceding "this". */
1351 return_method_hidden_param,
1353 /* Target ABI struct return. This is target-specific; for instance,
1354 on ia64 the first argument is passed in out0 but the hidden
1355 structure return pointer would normally be passed in r8. */
1356 return_method_struct,
1361 # function typedef's
1364 printf "/* The following are pre-initialized by GDBARCH. */\n"
1365 function_list |
while do_read
1370 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1371 printf "/* set_gdbarch_%s() - not applicable - pre-initialized. */\n" "$function"
1375 # function typedef's
1378 printf "/* The following are initialized by the target dependent code. */\n"
1379 function_list |
while do_read
1381 if [ -n "${comment}" ]
1383 echo "${comment}" |
sed \
1389 if class_is_predicate_p
1392 printf "extern int gdbarch_%s_p (struct gdbarch *gdbarch);\n" "$function"
1394 if class_is_variable_p
1397 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1398 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, %s %s);\n" "$function" "$returntype" "$function"
1400 if class_is_function_p
1403 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1405 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1406 elif class_is_multiarch_p
1408 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1410 printf "typedef %s (gdbarch_%s_ftype) (%s);\n" "$returntype" "$function" "$formal"
1412 if [ "x${formal}" = "xvoid" ]
1414 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1416 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1418 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, gdbarch_%s_ftype *%s);\n" "$function" "$function" "$function"
1425 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1428 /* Mechanism for co-ordinating the selection of a specific
1431 GDB targets (*-tdep.c) can register an interest in a specific
1432 architecture. Other GDB components can register a need to maintain
1433 per-architecture data.
1435 The mechanisms below ensures that there is only a loose connection
1436 between the set-architecture command and the various GDB
1437 components. Each component can independently register their need
1438 to maintain architecture specific data with gdbarch.
1442 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1445 The more traditional mega-struct containing architecture specific
1446 data for all the various GDB components was also considered. Since
1447 GDB is built from a variable number of (fairly independent)
1448 components it was determined that the global aproach was not
1452 /* Register a new architectural family with GDB.
1454 Register support for the specified ARCHITECTURE with GDB. When
1455 gdbarch determines that the specified architecture has been
1456 selected, the corresponding INIT function is called.
1460 The INIT function takes two parameters: INFO which contains the
1461 information available to gdbarch about the (possibly new)
1462 architecture; ARCHES which is a list of the previously created
1463 \`\`struct gdbarch'' for this architecture.
1465 The INFO parameter is, as far as possible, be pre-initialized with
1466 information obtained from INFO.ABFD or the global defaults.
1468 The ARCHES parameter is a linked list (sorted most recently used)
1469 of all the previously created architures for this architecture
1470 family. The (possibly NULL) ARCHES->gdbarch can used to access
1471 values from the previously selected architecture for this
1472 architecture family.
1474 The INIT function shall return any of: NULL - indicating that it
1475 doesn't recognize the selected architecture; an existing \`\`struct
1476 gdbarch'' from the ARCHES list - indicating that the new
1477 architecture is just a synonym for an earlier architecture (see
1478 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1479 - that describes the selected architecture (see gdbarch_alloc()).
1481 The DUMP_TDEP function shall print out all target specific values.
1482 Care should be taken to ensure that the function works in both the
1483 multi-arch and non- multi-arch cases. */
1487 struct gdbarch *gdbarch;
1488 struct gdbarch_list *next;
1493 /* Use default: NULL (ZERO). */
1494 const struct bfd_arch_info *bfd_arch_info;
1496 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1497 enum bfd_endian byte_order;
1499 enum bfd_endian byte_order_for_code;
1501 /* Use default: NULL (ZERO). */
1504 /* Use default: NULL (ZERO). */
1507 /* Architecture-specific information. The generic form for targets
1508 that have extra requirements. */
1509 struct gdbarch_tdep_info *tdep_info;
1511 /* Architecture-specific target description data. Numerous targets
1512 need only this, so give them an easy way to hold it. */
1513 struct tdesc_arch_data *tdesc_data;
1515 /* SPU file system ID. This is a single integer, so using the
1516 generic form would only complicate code. Other targets may
1517 reuse this member if suitable. */
1521 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1522 enum gdb_osabi osabi;
1524 /* Use default: NULL (ZERO). */
1525 const struct target_desc *target_desc;
1528 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1529 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1531 /* DEPRECATED - use gdbarch_register() */
1532 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1534 extern void gdbarch_register (enum bfd_architecture architecture,
1535 gdbarch_init_ftype *,
1536 gdbarch_dump_tdep_ftype *);
1539 /* Return a freshly allocated, NULL terminated, array of the valid
1540 architecture names. Since architectures are registered during the
1541 _initialize phase this function only returns useful information
1542 once initialization has been completed. */
1544 extern const char **gdbarch_printable_names (void);
1547 /* Helper function. Search the list of ARCHES for a GDBARCH that
1548 matches the information provided by INFO. */
1550 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1553 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1554 basic initialization using values obtained from the INFO and TDEP
1555 parameters. set_gdbarch_*() functions are called to complete the
1556 initialization of the object. */
1558 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1561 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1562 It is assumed that the caller freeds the \`\`struct
1565 extern void gdbarch_free (struct gdbarch *);
1567 /* Get the obstack owned by ARCH. */
1569 extern obstack *gdbarch_obstack (gdbarch *arch);
1571 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1572 obstack. The memory is freed when the corresponding architecture
1575 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) \
1576 obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))
1578 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) \
1579 obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
1581 /* Duplicate STRING, returning an equivalent string that's allocated on the
1582 obstack associated with GDBARCH. The string is freed when the corresponding
1583 architecture is also freed. */
1585 extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
1587 /* Helper function. Force an update of the current architecture.
1589 The actual architecture selected is determined by INFO, \`\`(gdb) set
1590 architecture'' et.al., the existing architecture and BFD's default
1591 architecture. INFO should be initialized to zero and then selected
1592 fields should be updated.
1594 Returns non-zero if the update succeeds. */
1596 extern int gdbarch_update_p (struct gdbarch_info info);
1599 /* Helper function. Find an architecture matching info.
1601 INFO should be initialized using gdbarch_info_init, relevant fields
1602 set, and then finished using gdbarch_info_fill.
1604 Returns the corresponding architecture, or NULL if no matching
1605 architecture was found. */
1607 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1610 /* Helper function. Set the target gdbarch to "gdbarch". */
1612 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1615 /* Register per-architecture data-pointer.
1617 Reserve space for a per-architecture data-pointer. An identifier
1618 for the reserved data-pointer is returned. That identifer should
1619 be saved in a local static variable.
1621 Memory for the per-architecture data shall be allocated using
1622 gdbarch_obstack_zalloc. That memory will be deleted when the
1623 corresponding architecture object is deleted.
1625 When a previously created architecture is re-selected, the
1626 per-architecture data-pointer for that previous architecture is
1627 restored. INIT() is not re-called.
1629 Multiple registrarants for any architecture are allowed (and
1630 strongly encouraged). */
1632 struct gdbarch_data;
1634 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1635 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1636 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1637 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1639 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1642 /* Set the dynamic target-system-dependent parameters (architecture,
1643 byte-order, ...) using information found in the BFD. */
1645 extern void set_gdbarch_from_file (bfd *);
1648 /* Initialize the current architecture to the "first" one we find on
1651 extern void initialize_current_architecture (void);
1653 /* gdbarch trace variable */
1654 extern unsigned int gdbarch_debug;
1656 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1658 /* Return the number of cooked registers (raw + pseudo) for ARCH. */
1661 gdbarch_num_cooked_regs (gdbarch *arch)
1663 return gdbarch_num_regs (arch) + gdbarch_num_pseudo_regs (arch);
1669 ..
/move-if-change new-gdbarch.h gdbarch.h
1677 exec > new-gdbarch.c
1682 #include "arch-utils.h"
1685 #include "inferior.h"
1688 #include "floatformat.h"
1689 #include "reggroups.h"
1691 #include "gdb_obstack.h"
1692 #include "observable.h"
1693 #include "regcache.h"
1694 #include "objfiles.h"
1696 #include "frame-unwind.h"
1697 #include "dummy-frame.h"
1699 /* Static function declarations */
1701 static void alloc_gdbarch_data (struct gdbarch *);
1703 /* Non-zero if we want to trace architecture code. */
1705 #ifndef GDBARCH_DEBUG
1706 #define GDBARCH_DEBUG 0
1708 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1710 show_gdbarch_debug (struct ui_file *file, int from_tty,
1711 struct cmd_list_element *c, const char *value)
1713 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1717 pformat (const struct floatformat **format)
1722 /* Just print out one of them - this is only for diagnostics. */
1723 return format[0]->name;
1727 pstring (const char *string)
1735 pstring_ptr (char **string)
1737 if (string == NULL || *string == NULL)
1742 /* Helper function to print a list of strings, represented as "const
1743 char *const *". The list is printed comma-separated. */
1746 pstring_list (const char *const *list)
1748 static char ret[100];
1749 const char *const *p;
1756 for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1758 size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1764 gdb_assert (offset - 2 < sizeof (ret));
1765 ret[offset - 2] = '\0';
1773 # gdbarch open the gdbarch object
1775 printf "/* Maintain the struct gdbarch object. */\n"
1777 printf "struct gdbarch\n"
1779 printf " /* Has this architecture been fully initialized? */\n"
1780 printf " int initialized_p;\n"
1782 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1783 printf " struct obstack *obstack;\n"
1785 printf " /* basic architectural information. */\n"
1786 function_list |
while do_read
1790 printf " %s %s;\n" "$returntype" "$function"
1794 printf " /* target specific vector. */\n"
1795 printf " struct gdbarch_tdep *tdep;\n"
1796 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1798 printf " /* per-architecture data-pointers. */\n"
1799 printf " unsigned nr_data;\n"
1800 printf " void **data;\n"
1803 /* Multi-arch values.
1805 When extending this structure you must:
1807 Add the field below.
1809 Declare set/get functions and define the corresponding
1812 gdbarch_alloc(): If zero/NULL is not a suitable default,
1813 initialize the new field.
1815 verify_gdbarch(): Confirm that the target updated the field
1818 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1821 get_gdbarch(): Implement the set/get functions (probably using
1822 the macro's as shortcuts).
1827 function_list |
while do_read
1829 if class_is_variable_p
1831 printf " %s %s;\n" "$returntype" "$function"
1832 elif class_is_function_p
1834 printf " gdbarch_%s_ftype *%s;\n" "$function" "$function"
1839 # Create a new gdbarch struct
1842 /* Create a new \`\`struct gdbarch'' based on information provided by
1843 \`\`struct gdbarch_info''. */
1848 gdbarch_alloc (const struct gdbarch_info *info,
1849 struct gdbarch_tdep *tdep)
1851 struct gdbarch *gdbarch;
1853 /* Create an obstack for allocating all the per-architecture memory,
1854 then use that to allocate the architecture vector. */
1855 struct obstack *obstack = XNEW (struct obstack);
1856 obstack_init (obstack);
1857 gdbarch = XOBNEW (obstack, struct gdbarch);
1858 memset (gdbarch, 0, sizeof (*gdbarch));
1859 gdbarch->obstack = obstack;
1861 alloc_gdbarch_data (gdbarch);
1863 gdbarch->tdep = tdep;
1866 function_list |
while do_read
1870 printf " gdbarch->%s = info->%s;\n" "$function" "$function"
1874 printf " /* Force the explicit initialization of these. */\n"
1875 function_list |
while do_read
1877 if class_is_function_p || class_is_variable_p
1879 if [ -n "${predefault}" ] && [ "x${predefault}" != "x0" ]
1881 printf " gdbarch->%s = %s;\n" "$function" "$predefault"
1886 /* gdbarch_alloc() */
1892 # Free a gdbarch struct.
1897 obstack *gdbarch_obstack (gdbarch *arch)
1899 return arch->obstack;
1902 /* See gdbarch.h. */
1905 gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
1907 return obstack_strdup (arch->obstack, string);
1911 /* Free a gdbarch struct. This should never happen in normal
1912 operation --- once you've created a gdbarch, you keep it around.
1913 However, if an architecture's init function encounters an error
1914 building the structure, it may need to clean up a partially
1915 constructed gdbarch. */
1918 gdbarch_free (struct gdbarch *arch)
1920 struct obstack *obstack;
1922 gdb_assert (arch != NULL);
1923 gdb_assert (!arch->initialized_p);
1924 obstack = arch->obstack;
1925 obstack_free (obstack, 0); /* Includes the ARCH. */
1930 # verify a new architecture
1934 /* Ensure that all values in a GDBARCH are reasonable. */
1937 verify_gdbarch (struct gdbarch *gdbarch)
1942 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1943 log.puts ("\n\tbyte-order");
1944 if (gdbarch->bfd_arch_info == NULL)
1945 log.puts ("\n\tbfd_arch_info");
1946 /* Check those that need to be defined for the given multi-arch level. */
1948 function_list |
while do_read
1950 if class_is_function_p || class_is_variable_p
1952 if [ "x${invalid_p}" = "x0" ]
1954 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
1955 elif class_is_predicate_p
1957 printf " /* Skip verify of %s, has predicate. */\n" "$function"
1958 # FIXME: See do_read for potential simplification
1959 elif [ -n "${invalid_p}" ] && [ -n "${postdefault}" ]
1961 printf " if (%s)\n" "$invalid_p"
1962 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1963 elif [ -n "${predefault}" ] && [ -n "${postdefault}" ]
1965 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
1966 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1967 elif [ -n "${postdefault}" ]
1969 printf " if (gdbarch->%s == 0)\n" "$function"
1970 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1971 elif [ -n "${invalid_p}" ]
1973 printf " if (%s)\n" "$invalid_p"
1974 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
1975 elif [ -n "${predefault}" ]
1977 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
1978 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
1984 internal_error (__FILE__, __LINE__,
1985 _("verify_gdbarch: the following are invalid ...%s"),
1990 # dump the structure
1994 /* Print out the details of the current architecture. */
1997 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
1999 const char *gdb_nm_file = "<not-defined>";
2001 #if defined (GDB_NM_FILE)
2002 gdb_nm_file = GDB_NM_FILE;
2004 fprintf_unfiltered (file,
2005 "gdbarch_dump: GDB_NM_FILE = %s\\n",
2008 function_list |
sort '-t;' -k 3 |
while do_read
2010 # First the predicate
2011 if class_is_predicate_p
2013 printf " fprintf_unfiltered (file,\n"
2014 printf " \"gdbarch_dump: gdbarch_%s_p() = %%d\\\\n\",\n" "$function"
2015 printf " gdbarch_%s_p (gdbarch));\n" "$function"
2017 # Print the corresponding value.
2018 if class_is_function_p
2020 printf " fprintf_unfiltered (file,\n"
2021 printf " \"gdbarch_dump: %s = <%%s>\\\\n\",\n" "$function"
2022 printf " host_address_to_string (gdbarch->%s));\n" "$function"
2025 case "${print}:${returntype}" in
2028 print
="core_addr_to_string_nz (gdbarch->${function})"
2032 print
="plongest (gdbarch->${function})"
2038 printf " fprintf_unfiltered (file,\n"
2039 printf " \"gdbarch_dump: %s = %s\\\\n\",\n" "$function" "$fmt"
2040 printf " %s);\n" "$print"
2044 if (gdbarch->dump_tdep != NULL)
2045 gdbarch->dump_tdep (gdbarch, file);
2053 struct gdbarch_tdep *
2054 gdbarch_tdep (struct gdbarch *gdbarch)
2056 if (gdbarch_debug >= 2)
2057 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
2058 return gdbarch->tdep;
2062 function_list |
while do_read
2064 if class_is_predicate_p
2068 printf "gdbarch_%s_p (struct gdbarch *gdbarch)\n" "$function"
2070 printf " gdb_assert (gdbarch != NULL);\n"
2071 printf " return %s;\n" "$predicate"
2074 if class_is_function_p
2077 printf "%s\n" "$returntype"
2078 if [ "x${formal}" = "xvoid" ]
2080 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2082 printf "gdbarch_%s (struct gdbarch *gdbarch, %s)\n" "$function" "$formal"
2085 printf " gdb_assert (gdbarch != NULL);\n"
2086 printf " gdb_assert (gdbarch->%s != NULL);\n" "$function"
2087 if class_is_predicate_p
&& test -n "${predefault}"
2089 # Allow a call to a function with a predicate.
2090 printf " /* Do not check predicate: %s, allow call. */\n" "$predicate"
2092 printf " if (gdbarch_debug >= 2)\n"
2093 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2094 if [ "x${actual:-}" = "x-" ] ||
[ "x${actual:-}" = "x" ]
2096 if class_is_multiarch_p
2103 if class_is_multiarch_p
2105 params
="gdbarch, ${actual}"
2110 if [ "x${returntype}" = "xvoid" ]
2112 printf " gdbarch->%s (%s);\n" "$function" "$params"
2114 printf " return gdbarch->%s (%s);\n" "$function" "$params"
2119 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2120 printf " %s gdbarch_%s_ftype %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$function" "$function"
2122 printf " gdbarch->%s = %s;\n" "$function" "$function"
2124 elif class_is_variable_p
2127 printf "%s\n" "$returntype"
2128 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2130 printf " gdb_assert (gdbarch != NULL);\n"
2131 if [ "x${invalid_p}" = "x0" ]
2133 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
2134 elif [ -n "${invalid_p}" ]
2136 printf " /* Check variable is valid. */\n"
2137 printf " gdb_assert (!(%s));\n" "$invalid_p"
2138 elif [ -n "${predefault}" ]
2140 printf " /* Check variable changed from pre-default. */\n"
2141 printf " gdb_assert (gdbarch->%s != %s);\n" "$function" "$predefault"
2143 printf " if (gdbarch_debug >= 2)\n"
2144 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2145 printf " return gdbarch->%s;\n" "$function"
2149 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2150 printf " %s %s %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$returntype" "$function"
2152 printf " gdbarch->%s = %s;\n" "$function" "$function"
2154 elif class_is_info_p
2157 printf "%s\n" "$returntype"
2158 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2160 printf " gdb_assert (gdbarch != NULL);\n"
2161 printf " if (gdbarch_debug >= 2)\n"
2162 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2163 printf " return gdbarch->%s;\n" "$function"
2168 # All the trailing guff
2172 /* Keep a registry of per-architecture data-pointers required by GDB
2179 gdbarch_data_pre_init_ftype *pre_init;
2180 gdbarch_data_post_init_ftype *post_init;
2183 struct gdbarch_data_registration
2185 struct gdbarch_data *data;
2186 struct gdbarch_data_registration *next;
2189 struct gdbarch_data_registry
2192 struct gdbarch_data_registration *registrations;
2195 struct gdbarch_data_registry gdbarch_data_registry =
2200 static struct gdbarch_data *
2201 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2202 gdbarch_data_post_init_ftype *post_init)
2204 struct gdbarch_data_registration **curr;
2206 /* Append the new registration. */
2207 for (curr = &gdbarch_data_registry.registrations;
2209 curr = &(*curr)->next);
2210 (*curr) = XNEW (struct gdbarch_data_registration);
2211 (*curr)->next = NULL;
2212 (*curr)->data = XNEW (struct gdbarch_data);
2213 (*curr)->data->index = gdbarch_data_registry.nr++;
2214 (*curr)->data->pre_init = pre_init;
2215 (*curr)->data->post_init = post_init;
2216 (*curr)->data->init_p = 1;
2217 return (*curr)->data;
2220 struct gdbarch_data *
2221 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2223 return gdbarch_data_register (pre_init, NULL);
2226 struct gdbarch_data *
2227 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2229 return gdbarch_data_register (NULL, post_init);
2232 /* Create/delete the gdbarch data vector. */
2235 alloc_gdbarch_data (struct gdbarch *gdbarch)
2237 gdb_assert (gdbarch->data == NULL);
2238 gdbarch->nr_data = gdbarch_data_registry.nr;
2239 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2242 /* Return the current value of the specified per-architecture
2246 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2248 gdb_assert (data->index < gdbarch->nr_data);
2249 if (gdbarch->data[data->index] == NULL)
2251 /* The data-pointer isn't initialized, call init() to get a
2253 if (data->pre_init != NULL)
2254 /* Mid architecture creation: pass just the obstack, and not
2255 the entire architecture, as that way it isn't possible for
2256 pre-init code to refer to undefined architecture
2258 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2259 else if (gdbarch->initialized_p
2260 && data->post_init != NULL)
2261 /* Post architecture creation: pass the entire architecture
2262 (as all fields are valid), but be careful to also detect
2263 recursive references. */
2265 gdb_assert (data->init_p);
2267 gdbarch->data[data->index] = data->post_init (gdbarch);
2271 internal_error (__FILE__, __LINE__,
2272 _("gdbarch post-init data field can only be used "
2273 "after gdbarch is fully initialised"));
2274 gdb_assert (gdbarch->data[data->index] != NULL);
2276 return gdbarch->data[data->index];
2280 /* Keep a registry of the architectures known by GDB. */
2282 struct gdbarch_registration
2284 enum bfd_architecture bfd_architecture;
2285 gdbarch_init_ftype *init;
2286 gdbarch_dump_tdep_ftype *dump_tdep;
2287 struct gdbarch_list *arches;
2288 struct gdbarch_registration *next;
2291 static struct gdbarch_registration *gdbarch_registry = NULL;
2294 append_name (const char ***buf, int *nr, const char *name)
2296 *buf = XRESIZEVEC (const char *, *buf, *nr + 1);
2302 gdbarch_printable_names (void)
2304 /* Accumulate a list of names based on the registed list of
2307 const char **arches = NULL;
2308 struct gdbarch_registration *rego;
2310 for (rego = gdbarch_registry;
2314 const struct bfd_arch_info *ap;
2315 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2317 internal_error (__FILE__, __LINE__,
2318 _("gdbarch_architecture_names: multi-arch unknown"));
2321 append_name (&arches, &nr_arches, ap->printable_name);
2326 append_name (&arches, &nr_arches, NULL);
2332 gdbarch_register (enum bfd_architecture bfd_architecture,
2333 gdbarch_init_ftype *init,
2334 gdbarch_dump_tdep_ftype *dump_tdep)
2336 struct gdbarch_registration **curr;
2337 const struct bfd_arch_info *bfd_arch_info;
2339 /* Check that BFD recognizes this architecture */
2340 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2341 if (bfd_arch_info == NULL)
2343 internal_error (__FILE__, __LINE__,
2344 _("gdbarch: Attempt to register "
2345 "unknown architecture (%d)"),
2348 /* Check that we haven't seen this architecture before. */
2349 for (curr = &gdbarch_registry;
2351 curr = &(*curr)->next)
2353 if (bfd_architecture == (*curr)->bfd_architecture)
2354 internal_error (__FILE__, __LINE__,
2355 _("gdbarch: Duplicate registration "
2356 "of architecture (%s)"),
2357 bfd_arch_info->printable_name);
2361 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2362 bfd_arch_info->printable_name,
2363 host_address_to_string (init));
2365 (*curr) = XNEW (struct gdbarch_registration);
2366 (*curr)->bfd_architecture = bfd_architecture;
2367 (*curr)->init = init;
2368 (*curr)->dump_tdep = dump_tdep;
2369 (*curr)->arches = NULL;
2370 (*curr)->next = NULL;
2374 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2375 gdbarch_init_ftype *init)
2377 gdbarch_register (bfd_architecture, init, NULL);
2381 /* Look for an architecture using gdbarch_info. */
2383 struct gdbarch_list *
2384 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2385 const struct gdbarch_info *info)
2387 for (; arches != NULL; arches = arches->next)
2389 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2391 if (info->byte_order != arches->gdbarch->byte_order)
2393 if (info->osabi != arches->gdbarch->osabi)
2395 if (info->target_desc != arches->gdbarch->target_desc)
2403 /* Find an architecture that matches the specified INFO. Create a new
2404 architecture if needed. Return that new architecture. */
2407 gdbarch_find_by_info (struct gdbarch_info info)
2409 struct gdbarch *new_gdbarch;
2410 struct gdbarch_registration *rego;
2412 /* Fill in missing parts of the INFO struct using a number of
2413 sources: "set ..."; INFOabfd supplied; and the global
2415 gdbarch_info_fill (&info);
2417 /* Must have found some sort of architecture. */
2418 gdb_assert (info.bfd_arch_info != NULL);
2422 fprintf_unfiltered (gdb_stdlog,
2423 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2424 (info.bfd_arch_info != NULL
2425 ? info.bfd_arch_info->printable_name
2427 fprintf_unfiltered (gdb_stdlog,
2428 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2430 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2431 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2433 fprintf_unfiltered (gdb_stdlog,
2434 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2435 info.osabi, gdbarch_osabi_name (info.osabi));
2436 fprintf_unfiltered (gdb_stdlog,
2437 "gdbarch_find_by_info: info.abfd %s\n",
2438 host_address_to_string (info.abfd));
2439 fprintf_unfiltered (gdb_stdlog,
2440 "gdbarch_find_by_info: info.tdep_info %s\n",
2441 host_address_to_string (info.tdep_info));
2444 /* Find the tdep code that knows about this architecture. */
2445 for (rego = gdbarch_registry;
2448 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2453 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2454 "No matching architecture\n");
2458 /* Ask the tdep code for an architecture that matches "info". */
2459 new_gdbarch = rego->init (info, rego->arches);
2461 /* Did the tdep code like it? No. Reject the change and revert to
2462 the old architecture. */
2463 if (new_gdbarch == NULL)
2466 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2467 "Target rejected architecture\n");
2471 /* Is this a pre-existing architecture (as determined by already
2472 being initialized)? Move it to the front of the architecture
2473 list (keeping the list sorted Most Recently Used). */
2474 if (new_gdbarch->initialized_p)
2476 struct gdbarch_list **list;
2477 struct gdbarch_list *self;
2479 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2480 "Previous architecture %s (%s) selected\n",
2481 host_address_to_string (new_gdbarch),
2482 new_gdbarch->bfd_arch_info->printable_name);
2483 /* Find the existing arch in the list. */
2484 for (list = ®o->arches;
2485 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2486 list = &(*list)->next);
2487 /* It had better be in the list of architectures. */
2488 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2491 (*list) = self->next;
2492 /* Insert SELF at the front. */
2493 self->next = rego->arches;
2494 rego->arches = self;
2499 /* It's a new architecture. */
2501 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2502 "New architecture %s (%s) selected\n",
2503 host_address_to_string (new_gdbarch),
2504 new_gdbarch->bfd_arch_info->printable_name);
2506 /* Insert the new architecture into the front of the architecture
2507 list (keep the list sorted Most Recently Used). */
2509 struct gdbarch_list *self = XNEW (struct gdbarch_list);
2510 self->next = rego->arches;
2511 self->gdbarch = new_gdbarch;
2512 rego->arches = self;
2515 /* Check that the newly installed architecture is valid. Plug in
2516 any post init values. */
2517 new_gdbarch->dump_tdep = rego->dump_tdep;
2518 verify_gdbarch (new_gdbarch);
2519 new_gdbarch->initialized_p = 1;
2522 gdbarch_dump (new_gdbarch, gdb_stdlog);
2527 /* Make the specified architecture current. */
2530 set_target_gdbarch (struct gdbarch *new_gdbarch)
2532 gdb_assert (new_gdbarch != NULL);
2533 gdb_assert (new_gdbarch->initialized_p);
2534 current_inferior ()->gdbarch = new_gdbarch;
2535 gdb::observers::architecture_changed.notify (new_gdbarch);
2536 registers_changed ();
2539 /* Return the current inferior's arch. */
2542 target_gdbarch (void)
2544 return current_inferior ()->gdbarch;
2547 void _initialize_gdbarch ();
2549 _initialize_gdbarch ()
2551 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2552 Set architecture debugging."), _("\\
2553 Show architecture debugging."), _("\\
2554 When non-zero, architecture debugging is enabled."),
2557 &setdebuglist, &showdebuglist);
2563 ..
/move-if-change new-gdbarch.c gdbarch.c