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 # GDB's standard (or well known) register numbers. These can map onto
424 # a real register or a pseudo (computed) register or not be defined at
426 # gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP.
427 v;int;sp_regnum;;;-1;-1;;0
428 v;int;pc_regnum;;;-1;-1;;0
429 v;int;ps_regnum;;;-1;-1;;0
430 v;int;fp0_regnum;;;0;-1;;0
431 # Convert stab register number (from \`r\' declaration) to a gdb REGNUM.
432 m;int;stab_reg_to_regnum;int stab_regnr;stab_regnr;;no_op_reg_to_regnum;;0
433 # Provide a default mapping from a ecoff register number to a gdb REGNUM.
434 m;int;ecoff_reg_to_regnum;int ecoff_regnr;ecoff_regnr;;no_op_reg_to_regnum;;0
435 # Convert from an sdb register number to an internal gdb register number.
436 m;int;sdb_reg_to_regnum;int sdb_regnr;sdb_regnr;;no_op_reg_to_regnum;;0
437 # Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
438 # Return -1 for bad REGNUM. Note: Several targets get this wrong.
439 m;int;dwarf2_reg_to_regnum;int dwarf2_regnr;dwarf2_regnr;;no_op_reg_to_regnum;;0
440 m;const char *;register_name;int regnr;regnr;;0
442 # Return the type of a register specified by the architecture. Only
443 # the register cache should call this function directly; others should
444 # use "register_type".
445 M;struct type *;register_type;int reg_nr;reg_nr
447 # Generate a dummy frame_id for THIS_FRAME assuming that the frame is
448 # a dummy frame. A dummy frame is created before an inferior call,
449 # the frame_id returned here must match the frame_id that was built
450 # for the inferior call. Usually this means the returned frame_id's
451 # stack address should match the address returned by
452 # gdbarch_push_dummy_call, and the returned frame_id's code address
453 # should match the address at which the breakpoint was set in the dummy
455 m;struct frame_id;dummy_id;struct frame_info *this_frame;this_frame;;default_dummy_id;;0
456 # Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
457 # deprecated_fp_regnum.
458 v;int;deprecated_fp_regnum;;;-1;-1;;0
460 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
461 v;int;call_dummy_location;;;;AT_ENTRY_POINT;;0
462 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
464 # Return true if the code of FRAME is writable.
465 m;int;code_of_frame_writable;struct frame_info *frame;frame;;default_code_of_frame_writable;;0
467 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
468 m;void;print_float_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args;;default_print_float_info;;0
469 M;void;print_vector_info;struct ui_file *file, struct frame_info *frame, const char *args;file, frame, args
470 # MAP a GDB RAW register number onto a simulator register number. See
471 # also include/...-sim.h.
472 m;int;register_sim_regno;int reg_nr;reg_nr;;legacy_register_sim_regno;;0
473 m;int;cannot_fetch_register;int regnum;regnum;;cannot_register_not;;0
474 m;int;cannot_store_register;int regnum;regnum;;cannot_register_not;;0
476 # Determine the address where a longjmp will land and save this address
477 # in PC. Return nonzero on success.
479 # FRAME corresponds to the longjmp frame.
480 F;int;get_longjmp_target;struct frame_info *frame, CORE_ADDR *pc;frame, pc
483 v;int;believe_pcc_promotion;;;;;;;
485 m;int;convert_register_p;int regnum, struct type *type;regnum, type;0;generic_convert_register_p;;0
486 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
487 f;void;value_to_register;struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf;frame, regnum, type, buf;0
488 # Construct a value representing the contents of register REGNUM in
489 # frame FRAME_ID, interpreted as type TYPE. The routine needs to
490 # allocate and return a struct value with all value attributes
491 # (but not the value contents) filled in.
492 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
494 m;CORE_ADDR;pointer_to_address;struct type *type, const gdb_byte *buf;type, buf;;unsigned_pointer_to_address;;0
495 m;void;address_to_pointer;struct type *type, gdb_byte *buf, CORE_ADDR addr;type, buf, addr;;unsigned_address_to_pointer;;0
496 M;CORE_ADDR;integer_to_address;struct type *type, const gdb_byte *buf;type, buf
498 # Return the return-value convention that will be used by FUNCTION
499 # to return a value of type VALTYPE. FUNCTION may be NULL in which
500 # case the return convention is computed based only on VALTYPE.
502 # If READBUF is not NULL, extract the return value and save it in this buffer.
504 # If WRITEBUF is not NULL, it contains a return value which will be
505 # stored into the appropriate register. This can be used when we want
506 # to force the value returned by a function (see the "return" command
508 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
510 # Return true if the return value of function is stored in the first hidden
511 # parameter. In theory, this feature should be language-dependent, specified
512 # by language and its ABI, such as C++. Unfortunately, compiler may
513 # implement it to a target-dependent feature. So that we need such hook here
514 # to be aware of this in GDB.
515 m;int;return_in_first_hidden_param_p;struct type *type;type;;default_return_in_first_hidden_param_p;;0
517 m;CORE_ADDR;skip_prologue;CORE_ADDR ip;ip;0;0
518 M;CORE_ADDR;skip_main_prologue;CORE_ADDR ip;ip
519 # On some platforms, a single function may provide multiple entry points,
520 # e.g. one that is used for function-pointer calls and a different one
521 # that is used for direct function calls.
522 # In order to ensure that breakpoints set on the function will trigger
523 # no matter via which entry point the function is entered, a platform
524 # may provide the skip_entrypoint callback. It is called with IP set
525 # to the main entry point of a function (as determined by the symbol table),
526 # and should return the address of the innermost entry point, where the
527 # actual breakpoint needs to be set. Note that skip_entrypoint is used
528 # by GDB common code even when debugging optimized code, where skip_prologue
530 M;CORE_ADDR;skip_entrypoint;CORE_ADDR ip;ip
532 f;int;inner_than;CORE_ADDR lhs, CORE_ADDR rhs;lhs, rhs;0;0
533 m;const gdb_byte *;breakpoint_from_pc;CORE_ADDR *pcptr, int *lenptr;pcptr, lenptr;0;default_breakpoint_from_pc;;0
535 # Return the breakpoint kind for this target based on *PCPTR.
536 m;int;breakpoint_kind_from_pc;CORE_ADDR *pcptr;pcptr;;0;
538 # Return the software breakpoint from KIND. KIND can have target
539 # specific meaning like the Z0 kind parameter.
540 # SIZE is set to the software breakpoint's length in memory.
541 m;const gdb_byte *;sw_breakpoint_from_kind;int kind, int *size;kind, size;;NULL;;0
543 # Return the breakpoint kind for this target based on the current
544 # processor state (e.g. the current instruction mode on ARM) and the
545 # *PCPTR. In default, it is gdbarch->breakpoint_kind_from_pc.
546 m;int;breakpoint_kind_from_current_state;struct regcache *regcache, CORE_ADDR *pcptr;regcache, pcptr;0;default_breakpoint_kind_from_current_state;;0
548 M;CORE_ADDR;adjust_breakpoint_address;CORE_ADDR bpaddr;bpaddr
549 m;int;memory_insert_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_insert_breakpoint;;0
550 m;int;memory_remove_breakpoint;struct bp_target_info *bp_tgt;bp_tgt;0;default_memory_remove_breakpoint;;0
551 v;CORE_ADDR;decr_pc_after_break;;;0;;;0
553 # A function can be addressed by either it's "pointer" (possibly a
554 # descriptor address) or "entry point" (first executable instruction).
555 # The method "convert_from_func_ptr_addr" converting the former to the
556 # latter. gdbarch_deprecated_function_start_offset is being used to implement
557 # a simplified subset of that functionality - the function's address
558 # corresponds to the "function pointer" and the function's start
559 # corresponds to the "function entry point" - and hence is redundant.
561 v;CORE_ADDR;deprecated_function_start_offset;;;0;;;0
563 # Return the remote protocol register number associated with this
564 # register. Normally the identity mapping.
565 m;int;remote_register_number;int regno;regno;;default_remote_register_number;;0
567 # Fetch the target specific address used to represent a load module.
568 F;CORE_ADDR;fetch_tls_load_module_address;struct objfile *objfile;objfile
570 # Return the thread-local address at OFFSET in the thread-local
571 # storage for the thread PTID and the shared library or executable
572 # file given by LM_ADDR. If that block of thread-local storage hasn't
573 # been allocated yet, this function may throw an error. LM_ADDR may
574 # be zero for statically linked multithreaded inferiors.
576 M;CORE_ADDR;get_thread_local_address;ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset;ptid, lm_addr, offset
578 v;CORE_ADDR;frame_args_skip;;;0;;;0
579 m;CORE_ADDR;unwind_pc;struct frame_info *next_frame;next_frame;;default_unwind_pc;;0
580 m;CORE_ADDR;unwind_sp;struct frame_info *next_frame;next_frame;;default_unwind_sp;;0
581 # DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
582 # frame-base. Enable frame-base before frame-unwind.
583 F;int;frame_num_args;struct frame_info *frame;frame
585 M;CORE_ADDR;frame_align;CORE_ADDR address;address
586 m;int;stabs_argument_has_addr;struct type *type;type;;default_stabs_argument_has_addr;;0
587 v;int;frame_red_zone_size
589 m;CORE_ADDR;convert_from_func_ptr_addr;CORE_ADDR addr, struct target_ops *targ;addr, targ;;convert_from_func_ptr_addr_identity;;0
590 # On some machines there are bits in addresses which are not really
591 # part of the address, but are used by the kernel, the hardware, etc.
592 # for special purposes. gdbarch_addr_bits_remove takes out any such bits so
593 # we get a "real" address such as one would find in a symbol table.
594 # This is used only for addresses of instructions, and even then I'm
595 # not sure it's used in all contexts. It exists to deal with there
596 # being a few stray bits in the PC which would mislead us, not as some
597 # sort of generic thing to handle alignment or segmentation (it's
598 # possible it should be in TARGET_READ_PC instead).
599 m;CORE_ADDR;addr_bits_remove;CORE_ADDR addr;addr;;core_addr_identity;;0
601 # On some machines, not all bits of an address word are significant.
602 # For example, on AArch64, the top bits of an address known as the "tag"
603 # are ignored by the kernel, the hardware, etc. and can be regarded as
604 # additional data associated with the address.
605 v;int;significant_addr_bit;;;;;;0
607 # FIXME/cagney/2001-01-18: This should be split in two. A target method that
608 # indicates if the target needs software single step. An ISA method to
611 # FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
612 # target can single step. If not, then implement single step using breakpoints.
614 # Return a vector of addresses on which the software single step
615 # breakpoints should be inserted. NULL means software single step is
617 # Multiple breakpoints may be inserted for some instructions such as
618 # conditional branch. However, each implementation must always evaluate
619 # the condition and only put the breakpoint at the branch destination if
620 # the condition is true, so that we ensure forward progress when stepping
621 # past a conditional branch to self.
622 F;std::vector<CORE_ADDR>;software_single_step;struct regcache *regcache;regcache
624 # Return non-zero if the processor is executing a delay slot and a
625 # further single-step is needed before the instruction finishes.
626 M;int;single_step_through_delay;struct frame_info *frame;frame
627 # FIXME: cagney/2003-08-28: Need to find a better way of selecting the
628 # disassembler. Perhaps objdump can handle it?
629 f;int;print_insn;bfd_vma vma, struct disassemble_info *info;vma, info;;default_print_insn;;0
630 f;CORE_ADDR;skip_trampoline_code;struct frame_info *frame, CORE_ADDR pc;frame, pc;;generic_skip_trampoline_code;;0
633 # If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
634 # evaluates non-zero, this is the address where the debugger will place
635 # a step-resume breakpoint to get us past the dynamic linker.
636 m;CORE_ADDR;skip_solib_resolver;CORE_ADDR pc;pc;;generic_skip_solib_resolver;;0
637 # Some systems also have trampoline code for returning from shared libs.
638 m;int;in_solib_return_trampoline;CORE_ADDR pc, const char *name;pc, name;;generic_in_solib_return_trampoline;;0
640 # Return true if PC lies inside an indirect branch thunk.
641 m;bool;in_indirect_branch_thunk;CORE_ADDR pc;pc;;default_in_indirect_branch_thunk;;0
643 # A target might have problems with watchpoints as soon as the stack
644 # frame of the current function has been destroyed. This mostly happens
645 # as the first action in a function's epilogue. stack_frame_destroyed_p()
646 # is defined to return a non-zero value if either the given addr is one
647 # instruction after the stack destroying instruction up to the trailing
648 # return instruction or if we can figure out that the stack frame has
649 # already been invalidated regardless of the value of addr. Targets
650 # which don't suffer from that problem could just let this functionality
652 m;int;stack_frame_destroyed_p;CORE_ADDR addr;addr;0;generic_stack_frame_destroyed_p;;0
653 # Process an ELF symbol in the minimal symbol table in a backend-specific
654 # way. Normally this hook is supposed to do nothing, however if required,
655 # then this hook can be used to apply tranformations to symbols that are
656 # considered special in some way. For example the MIPS backend uses it
657 # to interpret \`st_other' information to mark compressed code symbols so
658 # that they can be treated in the appropriate manner in the processing of
659 # the main symbol table and DWARF-2 records.
660 F;void;elf_make_msymbol_special;asymbol *sym, struct minimal_symbol *msym;sym, msym
661 f;void;coff_make_msymbol_special;int val, struct minimal_symbol *msym;val, msym;;default_coff_make_msymbol_special;;0
662 # Process a symbol in the main symbol table in a backend-specific way.
663 # Normally this hook is supposed to do nothing, however if required,
664 # then this hook can be used to apply tranformations to symbols that
665 # are considered special in some way. This is currently used by the
666 # MIPS backend to make sure compressed code symbols have the ISA bit
667 # set. This in turn is needed for symbol values seen in GDB to match
668 # the values used at the runtime by the program itself, for function
669 # and label references.
670 f;void;make_symbol_special;struct symbol *sym, struct objfile *objfile;sym, objfile;;default_make_symbol_special;;0
671 # Adjust the address retrieved from a DWARF-2 record other than a line
672 # entry in a backend-specific way. Normally this hook is supposed to
673 # return the address passed unchanged, however if that is incorrect for
674 # any reason, then this hook can be used to fix the address up in the
675 # required manner. This is currently used by the MIPS backend to make
676 # sure addresses in FDE, range records, etc. referring to compressed
677 # code have the ISA bit set, matching line information and the symbol
679 f;CORE_ADDR;adjust_dwarf2_addr;CORE_ADDR pc;pc;;default_adjust_dwarf2_addr;;0
680 # Adjust the address updated by a line entry in a backend-specific way.
681 # Normally this hook is supposed to return the address passed unchanged,
682 # however in the case of inconsistencies in these records, this hook can
683 # be used to fix them up in the required manner. This is currently used
684 # by the MIPS backend to make sure all line addresses in compressed code
685 # are presented with the ISA bit set, which is not always the case. This
686 # in turn ensures breakpoint addresses are correctly matched against the
688 f;CORE_ADDR;adjust_dwarf2_line;CORE_ADDR addr, int rel;addr, rel;;default_adjust_dwarf2_line;;0
689 v;int;cannot_step_breakpoint;;;0;0;;0
690 # See comment in target.h about continuable, steppable and
691 # non-steppable watchpoints.
692 v;int;have_nonsteppable_watchpoint;;;0;0;;0
693 F;int;address_class_type_flags;int byte_size, int dwarf2_addr_class;byte_size, dwarf2_addr_class
694 M;const char *;address_class_type_flags_to_name;int type_flags;type_flags
695 # Execute vendor-specific DWARF Call Frame Instruction. OP is the instruction.
696 # FS are passed from the generic execute_cfa_program function.
697 m;bool;execute_dwarf_cfa_vendor_op;gdb_byte op, struct dwarf2_frame_state *fs;op, fs;;default_execute_dwarf_cfa_vendor_op;;0
699 # Return the appropriate type_flags for the supplied address class.
700 # This function should return 1 if the address class was recognized and
701 # type_flags was set, zero otherwise.
702 M;int;address_class_name_to_type_flags;const char *name, int *type_flags_ptr;name, type_flags_ptr
703 # Is a register in a group
704 m;int;register_reggroup_p;int regnum, struct reggroup *reggroup;regnum, reggroup;;default_register_reggroup_p;;0
705 # Fetch the pointer to the ith function argument.
706 F;CORE_ADDR;fetch_pointer_argument;struct frame_info *frame, int argi, struct type *type;frame, argi, type
708 # Iterate over all supported register notes in a core file. For each
709 # supported register note section, the iterator must call CB and pass
710 # CB_DATA unchanged. If REGCACHE is not NULL, the iterator can limit
711 # the supported register note sections based on the current register
712 # values. Otherwise it should enumerate all supported register note
714 M;void;iterate_over_regset_sections;iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache;cb, cb_data, regcache
716 # Create core file notes
717 M;char *;make_corefile_notes;bfd *obfd, int *note_size;obfd, note_size
719 # Find core file memory regions
720 M;int;find_memory_regions;find_memory_region_ftype func, void *data;func, data
722 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
723 # core file into buffer READBUF with length LEN. Return the number of bytes read
724 # (zero indicates failure).
725 # failed, otherwise, return the red length of READBUF.
726 M;ULONGEST;core_xfer_shared_libraries;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
728 # Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
729 # libraries list from core file into buffer READBUF with length LEN.
730 # Return the number of bytes read (zero indicates failure).
731 M;ULONGEST;core_xfer_shared_libraries_aix;gdb_byte *readbuf, ULONGEST offset, ULONGEST len;readbuf, offset, len
733 # How the core target converts a PTID from a core file to a string.
734 M;std::string;core_pid_to_str;ptid_t ptid;ptid
736 # How the core target extracts the name of a thread from a core file.
737 M;const char *;core_thread_name;struct thread_info *thr;thr
739 # Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information
740 # from core file into buffer READBUF with length LEN. Return the number
741 # of bytes read (zero indicates EOF, a negative value indicates failure
).
742 M
;LONGEST
;core_xfer_siginfo
;gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
; readbuf
, offset
, len
744 # BFD target to use when generating a core file.
745 V
;const char
*;gcore_bfd_target
;;;0;0;;;pstring
(gdbarch-
>gcore_bfd_target
)
747 # If the elements of C++ vtables are in-place function descriptors rather
748 # than normal function pointers (which may point to code or a descriptor),
750 v
;int
;vtable_function_descriptors
;;;0;0;;0
752 # Set if the least significant bit of the delta is used instead of the least
753 # significant bit of the pfn for pointers to virtual member functions.
754 v
;int
;vbit_in_delta
;;;0;0;;0
756 # Advance PC to next instruction in order to skip a permanent breakpoint.
757 f
;void
;skip_permanent_breakpoint
;struct regcache
*regcache
;regcache
;default_skip_permanent_breakpoint
;default_skip_permanent_breakpoint
;;0
759 # The maximum length of an instruction on this architecture in bytes.
760 V
;ULONGEST
;max_insn_length
;;;0;0
762 # Copy the instruction at FROM to TO, and make any adjustments
763 # necessary to single-step it at that address.
765 # REGS holds the state the thread's registers will have before
766 # executing the copied instruction; the PC in REGS will refer to FROM,
767 # not the copy at TO. The caller should update it to point at TO later.
769 # Return a pointer to data of the architecture's choice to be passed
770 # to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
771 # the instruction's effects have been completely simulated, with the
772 # resulting state written back to REGS.
774 # For a general explanation of displaced stepping and how GDB uses it,
775 # see the comments in infrun.c.
777 # The TO area is only guaranteed to have space for
778 # gdbarch_max_insn_length (arch) bytes, so this function must not
779 # write more bytes than that to that area.
781 # If you do not provide this function, GDB assumes that the
782 # architecture does not support displaced stepping.
784 # If the instruction cannot execute out of line, return NULL. The
785 # core falls back to stepping past the instruction in-line instead in
787 M
;displaced_step_closure_up
;displaced_step_copy_insn
;CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;from
, to
, regs
789 # Return true if GDB should use hardware single-stepping to execute
790 # the displaced instruction identified by CLOSURE. If false,
791 # GDB will simply restart execution at the displaced instruction
792 # location, and it is up to the target to ensure GDB will receive
793 # control again (e.g. by placing a software breakpoint instruction
794 # into the displaced instruction buffer).
796 # The default implementation returns false on all targets that
797 # provide a gdbarch_software_single_step routine, and true otherwise.
798 m
;int
;displaced_step_hw_singlestep
;struct displaced_step_closure
*closure
;closure
;;default_displaced_step_hw_singlestep
;;0
800 # Fix up the state resulting from successfully single-stepping a
801 # displaced instruction, to give the result we would have gotten from
802 # stepping the instruction in its original location.
804 # REGS is the register state resulting from single-stepping the
805 # displaced instruction.
807 # CLOSURE is the result from the matching call to
808 # gdbarch_displaced_step_copy_insn.
810 # If you provide gdbarch_displaced_step_copy_insn.but not this
811 # function, then GDB assumes that no fixup is needed after
812 # single-stepping the instruction.
814 # For a general explanation of displaced stepping and how GDB uses it,
815 # see the comments in infrun.c.
816 M
;void
;displaced_step_fixup
;struct displaced_step_closure
*closure
, CORE_ADDR from
, CORE_ADDR to
, struct regcache
*regs
;closure
, from
, to
, regs
;;NULL
818 # Return the address of an appropriate place to put displaced
819 # instructions while we step over them. There need only be one such
820 # place, since we're only stepping one thread over a breakpoint at a
823 # For a general explanation of displaced stepping and how GDB uses it,
824 # see the comments in infrun.c.
825 m
;CORE_ADDR
;displaced_step_location
;void
;;;NULL
;;(! gdbarch-
>displaced_step_location
) != (! gdbarch-
>displaced_step_copy_insn
)
827 # Relocate an instruction to execute at a different address. OLDLOC
828 # is the address in the inferior memory where the instruction to
829 # relocate is currently at. On input, TO points to the destination
830 # where we want the instruction to be copied (and possibly adjusted)
831 # to. On output, it points to one past the end of the resulting
832 # instruction(s). The effect of executing the instruction at TO shall
833 # be the same as if executing it at FROM. For example, call
834 # instructions that implicitly push the return address on the stack
835 # should be adjusted to return to the instruction after OLDLOC;
836 # relative branches, and other PC-relative instructions need the
837 # offset adjusted; etc.
838 M
;void
;relocate_instruction
;CORE_ADDR
*to
, CORE_ADDR from
;to
, from
;;NULL
840 # Refresh overlay mapped state for section OSECT.
841 F
;void
;overlay_update
;struct obj_section
*osect
;osect
843 M
;const struct target_desc
*;core_read_description
;struct target_ops
*target
, bfd
*abfd
;target
, abfd
845 # Set if the address in N_SO or N_FUN stabs may be zero.
846 v
;int
;sofun_address_maybe_missing
;;;0;0;;0
848 # Parse the instruction at ADDR storing in the record execution log
849 # the registers REGCACHE and memory ranges that will be affected when
850 # the instruction executes, along with their current values.
851 # Return -1 if something goes wrong, 0 otherwise.
852 M
;int
;process_record
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
854 # Save process state after a signal.
855 # Return -1 if something goes wrong, 0 otherwise.
856 M
;int
;process_record_signal
;struct regcache
*regcache
, enum gdb_signal signal
;regcache
, signal
858 # Signal translation: translate inferior's signal (target's) number
859 # into GDB's representation. The implementation of this method must
860 # be host independent. IOW, don't rely on symbols of the NAT_FILE
861 # header (the nm-*.h files), the host <signal.h> header, or similar
862 # headers. This is mainly used when cross-debugging core files ---
863 # "Live" targets hide the translation behind the target interface
864 # (target_wait, target_resume, etc.).
865 M
;enum gdb_signal
;gdb_signal_from_target
;int signo
;signo
867 # Signal translation: translate the GDB's internal signal number into
868 # the inferior's signal (target's) representation. The implementation
869 # of this method must be host independent. IOW, don't rely on symbols
870 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
871 # header, or similar headers.
872 # Return the target signal number if found, or -1 if the GDB internal
873 # signal number is invalid.
874 M
;int
;gdb_signal_to_target
;enum gdb_signal signal
;signal
876 # Extra signal info inspection.
878 # Return a type suitable to inspect extra signal information.
879 M
;struct
type *;get_siginfo_type
;void
;
881 # Record architecture-specific information from the symbol table.
882 M
;void
;record_special_symbol
;struct objfile
*objfile
, asymbol
*sym
;objfile
, sym
884 # Function for the 'catch syscall' feature.
886 # Get architecture-specific system calls information from registers.
887 M
;LONGEST
;get_syscall_number
;thread_info
*thread
;thread
889 # The filename of the XML syscall for this architecture.
890 v
;const char
*;xml_syscall_file
;;;0;0;;0;pstring
(gdbarch-
>xml_syscall_file
)
892 # Information about system calls from this architecture
893 v
;struct syscalls_info
*;syscalls_info
;;;0;0;;0;host_address_to_string
(gdbarch-
>syscalls_info
)
895 # SystemTap related fields and functions.
897 # A NULL-terminated array of prefixes used to mark an integer constant
898 # on the architecture's assembly.
899 # For example, on x86 integer constants are written as:
901 # \$10 ;; integer constant 10
903 # in this case, this prefix would be the character \`\$\'.
904 v
;const char
*const
*;stap_integer_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_prefixes
)
906 # A NULL-terminated array of suffixes used to mark an integer constant
907 # on the architecture's assembly.
908 v
;const char
*const
*;stap_integer_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_suffixes
)
910 # A NULL-terminated array of prefixes used to mark a register name on
911 # the architecture's assembly.
912 # For example, on x86 the register name is written as:
914 # \%eax ;; register eax
916 # in this case, this prefix would be the character \`\%\'.
917 v
;const char
*const
*;stap_register_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_prefixes
)
919 # A NULL-terminated array of suffixes used to mark a register name on
920 # the architecture's assembly.
921 v
;const char
*const
*;stap_register_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_suffixes
)
923 # A NULL-terminated array of prefixes used to mark a register
924 # indirection on the architecture's assembly.
925 # For example, on x86 the register indirection is written as:
927 # \(\%eax\) ;; indirecting eax
929 # in this case, this prefix would be the charater \`\(\'.
931 # Please note that we use the indirection prefix also for register
932 # displacement, e.g., \`4\(\%eax\)\' on x86.
933 v
;const char
*const
*;stap_register_indirection_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_prefixes
)
935 # A NULL-terminated array of suffixes used to mark a register
936 # indirection on the architecture's assembly.
937 # For example, on x86 the register indirection is written as:
939 # \(\%eax\) ;; indirecting eax
941 # in this case, this prefix would be the charater \`\)\'.
943 # Please note that we use the indirection suffix also for register
944 # displacement, e.g., \`4\(\%eax\)\' on x86.
945 v
;const char
*const
*;stap_register_indirection_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_suffixes
)
947 # Prefix(es) used to name a register using GDB's nomenclature.
949 # For example, on PPC a register is represented by a number in the assembly
950 # language (e.g., \`10\' is the 10th general-purpose register). However,
951 # inside GDB this same register has an \`r\' appended to its name, so the 10th
952 # register would be represented as \`r10\' internally.
953 v
;const char
*;stap_gdb_register_prefix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_prefix
)
955 # Suffix used to name a register using GDB's nomenclature.
956 v
;const char
*;stap_gdb_register_suffix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_suffix
)
958 # Check if S is a single operand.
960 # Single operands can be:
961 # \- Literal integers, e.g. \`\$10\' on x86
962 # \- Register access, e.g. \`\%eax\' on x86
963 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
964 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
966 # This function should check for these patterns on the string
967 # and return 1 if some were found, or zero otherwise. Please try to match
968 # as much info as you can from the string, i.e., if you have to match
969 # something like \`\(\%\', do not match just the \`\(\'.
970 M
;int
;stap_is_single_operand
;const char
*s
;s
972 # Function used to handle a "special case" in the parser.
974 # A "special case" is considered to be an unknown token, i.e., a token
975 # that the parser does not know how to parse. A good example of special
976 # case would be ARM's register displacement syntax:
978 # [R0, #4] ;; displacing R0 by 4
980 # Since the parser assumes that a register displacement is of the form:
982 # <number> <indirection_prefix> <register_name> <indirection_suffix>
984 # it means that it will not be able to recognize and parse this odd syntax.
985 # Therefore, we should add a special case function that will handle this token.
987 # This function should generate the proper expression form of the expression
988 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
989 # and so on). It should also return 1 if the parsing was successful, or zero
990 # if the token was not recognized as a special token (in this case, returning
991 # zero means that the special parser is deferring the parsing to the generic
992 # parser), and should advance the buffer pointer (p->arg).
993 M
;int
;stap_parse_special_token
;struct stap_parse_info
*p
;p
995 # Perform arch-dependent adjustments to a register name.
997 # In very specific situations, it may be necessary for the register
998 # name present in a SystemTap probe's argument to be handled in a
999 # special way. For example, on i386, GCC may over-optimize the
1000 # register allocation and use smaller registers than necessary. In
1001 # such cases, the client that is reading and evaluating the SystemTap
1002 # probe (ourselves) will need to actually fetch values from the wider
1003 # version of the register in question.
1005 # To illustrate the example, consider the following probe argument
1010 # This argument says that its value can be found at the %ax register,
1011 # which is a 16-bit register. However, the argument's prefix says
1012 # that its type is "uint32_t", which is 32-bit in size. Therefore, in
1013 # this case, GDB should actually fetch the probe's value from register
1014 # %eax, not %ax. In this scenario, this function would actually
1015 # replace the register name from %ax to %eax.
1017 # The rationale for this can be found at PR breakpoints/24541.
1018 M
;std
::string
;stap_adjust_register
;struct stap_parse_info
*p
, const std
::string \
®name
, int regnum
;p
, regname
, regnum
1020 # DTrace related functions.
1022 # The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
1023 # NARG must be >= 0.
1024 M
;void
;dtrace_parse_probe_argument
;struct expr_builder
*builder
, int narg
;builder
, narg
1026 # True if the given ADDR does not contain the instruction sequence
1027 # corresponding to a disabled DTrace is-enabled probe.
1028 M
;int
;dtrace_probe_is_enabled
;CORE_ADDR addr
;addr
1030 # Enable a DTrace is-enabled probe at ADDR.
1031 M
;void
;dtrace_enable_probe
;CORE_ADDR addr
;addr
1033 # Disable a DTrace is-enabled probe at ADDR.
1034 M
;void
;dtrace_disable_probe
;CORE_ADDR addr
;addr
1036 # True if the list of shared libraries is one and only for all
1037 # processes, as opposed to a list of shared libraries per inferior.
1038 # This usually means that all processes, although may or may not share
1039 # an address space, will see the same set of symbols at the same
1041 v
;int
;has_global_solist
;;;0;0;;0
1043 # On some targets, even though each inferior has its own private
1044 # address space, the debug interface takes care of making breakpoints
1045 # visible to all address spaces automatically. For such cases,
1046 # this property should be set to true.
1047 v
;int
;has_global_breakpoints
;;;0;0;;0
1049 # True if inferiors share an address space (e.g., uClinux).
1050 m
;int
;has_shared_address_space
;void
;;;default_has_shared_address_space
;;0
1052 # True if a fast tracepoint can be set at an address.
1053 m
;int
;fast_tracepoint_valid_at
;CORE_ADDR addr
, std
::string
*msg
;addr
, msg
;;default_fast_tracepoint_valid_at
;;0
1055 # Guess register state based on tracepoint location. Used for tracepoints
1056 # where no registers have been collected, but there's only one location,
1057 # allowing us to guess the PC value, and perhaps some other registers.
1058 # On entry, regcache has all registers marked as unavailable.
1059 m
;void
;guess_tracepoint_registers
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
;;default_guess_tracepoint_registers
;;0
1061 # Return the "auto" target charset.
1062 f
;const char
*;auto_charset
;void
;;default_auto_charset
;default_auto_charset
;;0
1063 # Return the "auto" target wide charset.
1064 f
;const char
*;auto_wide_charset
;void
;;default_auto_wide_charset
;default_auto_wide_charset
;;0
1066 # If non-empty, this is a file extension that will be opened in place
1067 # of the file extension reported by the shared library list.
1069 # This is most useful for toolchains that use a post-linker tool,
1070 # where the names of the files run on the target differ in extension
1071 # compared to the names of the files GDB should load for debug info.
1072 v
;const char
*;solib_symbols_extension
;;;;;;;pstring
(gdbarch-
>solib_symbols_extension
)
1074 # If true, the target OS has DOS-based file system semantics. That
1075 # is, absolute paths include a drive name, and the backslash is
1076 # considered a directory separator.
1077 v
;int
;has_dos_based_file_system
;;;0;0;;0
1079 # Generate bytecodes to collect the return address in a frame.
1080 # Since the bytecodes run on the target, possibly with GDB not even
1081 # connected, the full unwinding machinery is not available, and
1082 # typically this function will issue bytecodes for one or more likely
1083 # places that the return address may be found.
1084 m
;void
;gen_return_address
;struct agent_expr
*ax
, struct axs_value
*value
, CORE_ADDR scope
;ax
, value
, scope
;;default_gen_return_address
;;0
1086 # Implement the "info proc" command.
1087 M
;void
;info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1089 # Implement the "info proc" command for core files. Noe that there
1090 # are two "info_proc"-like methods on gdbarch -- one for core files,
1091 # one for live targets.
1092 M
;void
;core_info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1094 # Iterate over all objfiles in the order that makes the most sense
1095 # for the architecture to make global symbol searches.
1097 # CB is a callback function where OBJFILE is the objfile to be searched,
1098 # and CB_DATA a pointer to user-defined data (the same data that is passed
1099 # when calling this gdbarch method). The iteration stops if this function
1102 # CB_DATA is a pointer to some user-defined data to be passed to
1105 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1106 # inspected when the symbol search was requested.
1107 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
1109 # Ravenscar arch-dependent ops.
1110 v
;struct ravenscar_arch_ops
*;ravenscar_ops
;;;NULL
;NULL
;;0;host_address_to_string
(gdbarch-
>ravenscar_ops
)
1112 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1113 m
;int
;insn_is_call
;CORE_ADDR addr
;addr
;;default_insn_is_call
;;0
1115 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1116 m
;int
;insn_is_ret
;CORE_ADDR addr
;addr
;;default_insn_is_ret
;;0
1118 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1119 m
;int
;insn_is_jump
;CORE_ADDR addr
;addr
;;default_insn_is_jump
;;0
1121 # Return true if there's a program/permanent breakpoint planted in
1122 # memory at ADDRESS, return false otherwise.
1123 m
;bool
;program_breakpoint_here_p
;CORE_ADDR address
;address
;;default_program_breakpoint_here_p
;;0
1125 # Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
1126 # Return 0 if *READPTR is already at the end of the buffer.
1127 # Return -1 if there is insufficient buffer for a whole entry.
1128 # Return 1 if an entry was read into *TYPEP and *VALP.
1129 M
;int
;auxv_parse
;gdb_byte
**readptr
, gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
;readptr
, endptr
, typep
, valp
1131 # Print the description of a single auxv entry described by TYPE and VAL
1133 m
;void
;print_auxv_entry
;struct ui_file
*file, CORE_ADDR
type, CORE_ADDR val
;file, type, val
;;default_print_auxv_entry
;;0
1135 # Find the address range of the current inferior's vsyscall/vDSO, and
1136 # write it to *RANGE. If the vsyscall's length can't be determined, a
1137 # range with zero length is returned. Returns true if the vsyscall is
1138 # found, false otherwise.
1139 m
;int
;vsyscall_range
;struct mem_range
*range
;range
;;default_vsyscall_range
;;0
1141 # Allocate SIZE bytes of PROT protected page aligned memory in inferior.
1142 # PROT has GDB_MMAP_PROT_* bitmask format.
1143 # Throw an error if it is not possible. Returned address is always valid.
1144 f
;CORE_ADDR
;infcall_mmap
;CORE_ADDR size
, unsigned prot
;size
, prot
;;default_infcall_mmap
;;0
1146 # Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
1147 # Print a warning if it is not possible.
1148 f
;void
;infcall_munmap
;CORE_ADDR addr
, CORE_ADDR size
;addr
, size
;;default_infcall_munmap
;;0
1150 # Return string (caller has to use xfree for it) with options for GCC
1151 # to produce code for this target, typically "-m64", "-m32" or "-m31".
1152 # These options are put before CU's DW_AT_producer compilation options so that
1153 # they can override it.
1154 m
;std
::string
;gcc_target_options
;void
;;;default_gcc_target_options
;;0
1156 # Return a regular expression that matches names used by this
1157 # architecture in GNU configury triplets. The result is statically
1158 # allocated and must not be freed. The default implementation simply
1159 # returns the BFD architecture name, which is correct in nearly every
1161 m
;const char
*;gnu_triplet_regexp
;void
;;;default_gnu_triplet_regexp
;;0
1163 # Return the size in 8-bit bytes of an addressable memory unit on this
1164 # architecture. This corresponds to the number of 8-bit bytes associated to
1165 # each address in memory.
1166 m
;int
;addressable_memory_unit_size
;void
;;;default_addressable_memory_unit_size
;;0
1168 # Functions for allowing a target to modify its disassembler options.
1169 v
;const char
*;disassembler_options_implicit
;;;0;0;;0;pstring
(gdbarch-
>disassembler_options_implicit
)
1170 v
;char
**;disassembler_options
;;;0;0;;0;pstring_ptr
(gdbarch-
>disassembler_options
)
1171 v
;const disasm_options_and_args_t
*;valid_disassembler_options
;;;0;0;;0;host_address_to_string
(gdbarch-
>valid_disassembler_options
)
1173 # Type alignment override method. Return the architecture specific
1174 # alignment required for TYPE. If there is no special handling
1175 # required for TYPE then return the value 0, GDB will then apply the
1176 # default rules as laid out in gdbtypes.c:type_align.
1177 m
;ULONGEST
;type_align
;struct
type *type;type;;default_type_align
;;0
1179 # Return a string containing any flags for the given PC in the given FRAME.
1180 f
;std
::string
;get_pc_address_flags
;frame_info
*frame
, CORE_ADDR pc
;frame
, pc
;;default_get_pc_address_flags
;;0
1189 function_list |
while do_read
1192 ${class} ${returntype:-} ${function} (${formal:-})
1196 eval echo "\" ${r}=\${${r}}\""
1198 if class_is_predicate_p
&& fallback_default_p
1200 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1204 if [ "x${invalid_p}" = "x0" ] && [ -n "${postdefault}" ]
1206 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1210 if class_is_multiarch_p
1212 if class_is_predicate_p
; then :
1213 elif test "x${predefault}" = "x"
1215 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1229 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1232 /* Dynamic architecture support for GDB, the GNU debugger.
1234 Copyright (C) 1998-2020 Free Software Foundation, Inc.
1236 This file is part of GDB.
1238 This program is free software; you can redistribute it and/or modify
1239 it under the terms of the GNU General Public License as published by
1240 the Free Software Foundation; either version 3 of the License, or
1241 (at your option) any later version.
1243 This program is distributed in the hope that it will be useful,
1244 but WITHOUT ANY WARRANTY; without even the implied warranty of
1245 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1246 GNU General Public License for more details.
1248 You should have received a copy of the GNU General Public License
1249 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1251 /* This file was created with the aid of \`\`gdbarch.sh''. */
1260 exec > new-gdbarch.h
1268 #include "dis-asm.h"
1269 #include "gdb_obstack.h"
1278 struct minimal_symbol;
1282 struct disassemble_info;
1285 struct bp_target_info;
1291 struct stap_parse_info;
1292 struct expr_builder;
1293 struct ravenscar_arch_ops;
1295 struct syscalls_info;
1299 #include "regcache.h"
1301 /* The architecture associated with the inferior through the
1302 connection to the target.
1304 The architecture vector provides some information that is really a
1305 property of the inferior, accessed through a particular target:
1306 ptrace operations; the layout of certain RSP packets; the solib_ops
1307 vector; etc. To differentiate architecture accesses to
1308 per-inferior/target properties from
1309 per-thread/per-frame/per-objfile properties, accesses to
1310 per-inferior/target properties should be made through this
1313 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1314 extern struct gdbarch *target_gdbarch (void);
1316 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1319 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1320 (struct objfile *objfile, void *cb_data);
1322 /* Callback type for regset section iterators. The callback usually
1323 invokes the REGSET's supply or collect method, to which it must
1324 pass a buffer - for collects this buffer will need to be created using
1325 COLLECT_SIZE, for supply the existing buffer being read from should
1326 be at least SUPPLY_SIZE. SECT_NAME is a BFD section name, and HUMAN_NAME
1327 is used for diagnostic messages. CB_DATA should have been passed
1328 unchanged through the iterator. */
1330 typedef void (iterate_over_regset_sections_cb)
1331 (const char *sect_name, int supply_size, int collect_size,
1332 const struct regset *regset, const char *human_name, void *cb_data);
1334 /* For a function call, does the function return a value using a
1335 normal value return or a structure return - passing a hidden
1336 argument pointing to storage. For the latter, there are two
1337 cases: language-mandated structure return and target ABI
1338 structure return. */
1340 enum function_call_return_method
1342 /* Standard value return. */
1343 return_method_normal = 0,
1345 /* Language ABI structure return. This is handled
1346 by passing the return location as the first parameter to
1347 the function, even preceding "this". */
1348 return_method_hidden_param,
1350 /* Target ABI struct return. This is target-specific; for instance,
1351 on ia64 the first argument is passed in out0 but the hidden
1352 structure return pointer would normally be passed in r8. */
1353 return_method_struct,
1358 # function typedef's
1361 printf "/* The following are pre-initialized by GDBARCH. */\n"
1362 function_list |
while do_read
1367 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1368 printf "/* set_gdbarch_%s() - not applicable - pre-initialized. */\n" "$function"
1372 # function typedef's
1375 printf "/* The following are initialized by the target dependent code. */\n"
1376 function_list |
while do_read
1378 if [ -n "${comment}" ]
1380 echo "${comment}" |
sed \
1386 if class_is_predicate_p
1389 printf "extern int gdbarch_%s_p (struct gdbarch *gdbarch);\n" "$function"
1391 if class_is_variable_p
1394 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1395 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, %s %s);\n" "$function" "$returntype" "$function"
1397 if class_is_function_p
1400 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1402 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1403 elif class_is_multiarch_p
1405 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1407 printf "typedef %s (gdbarch_%s_ftype) (%s);\n" "$returntype" "$function" "$formal"
1409 if [ "x${formal}" = "xvoid" ]
1411 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1413 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1415 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, gdbarch_%s_ftype *%s);\n" "$function" "$function" "$function"
1422 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1425 /* Mechanism for co-ordinating the selection of a specific
1428 GDB targets (*-tdep.c) can register an interest in a specific
1429 architecture. Other GDB components can register a need to maintain
1430 per-architecture data.
1432 The mechanisms below ensures that there is only a loose connection
1433 between the set-architecture command and the various GDB
1434 components. Each component can independently register their need
1435 to maintain architecture specific data with gdbarch.
1439 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1442 The more traditional mega-struct containing architecture specific
1443 data for all the various GDB components was also considered. Since
1444 GDB is built from a variable number of (fairly independent)
1445 components it was determined that the global aproach was not
1449 /* Register a new architectural family with GDB.
1451 Register support for the specified ARCHITECTURE with GDB. When
1452 gdbarch determines that the specified architecture has been
1453 selected, the corresponding INIT function is called.
1457 The INIT function takes two parameters: INFO which contains the
1458 information available to gdbarch about the (possibly new)
1459 architecture; ARCHES which is a list of the previously created
1460 \`\`struct gdbarch'' for this architecture.
1462 The INFO parameter is, as far as possible, be pre-initialized with
1463 information obtained from INFO.ABFD or the global defaults.
1465 The ARCHES parameter is a linked list (sorted most recently used)
1466 of all the previously created architures for this architecture
1467 family. The (possibly NULL) ARCHES->gdbarch can used to access
1468 values from the previously selected architecture for this
1469 architecture family.
1471 The INIT function shall return any of: NULL - indicating that it
1472 doesn't recognize the selected architecture; an existing \`\`struct
1473 gdbarch'' from the ARCHES list - indicating that the new
1474 architecture is just a synonym for an earlier architecture (see
1475 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1476 - that describes the selected architecture (see gdbarch_alloc()).
1478 The DUMP_TDEP function shall print out all target specific values.
1479 Care should be taken to ensure that the function works in both the
1480 multi-arch and non- multi-arch cases. */
1484 struct gdbarch *gdbarch;
1485 struct gdbarch_list *next;
1490 /* Use default: NULL (ZERO). */
1491 const struct bfd_arch_info *bfd_arch_info;
1493 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1494 enum bfd_endian byte_order;
1496 enum bfd_endian byte_order_for_code;
1498 /* Use default: NULL (ZERO). */
1501 /* Use default: NULL (ZERO). */
1504 /* Architecture-specific information. The generic form for targets
1505 that have extra requirements. */
1506 struct gdbarch_tdep_info *tdep_info;
1508 /* Architecture-specific target description data. Numerous targets
1509 need only this, so give them an easy way to hold it. */
1510 struct tdesc_arch_data *tdesc_data;
1512 /* SPU file system ID. This is a single integer, so using the
1513 generic form would only complicate code. Other targets may
1514 reuse this member if suitable. */
1518 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1519 enum gdb_osabi osabi;
1521 /* Use default: NULL (ZERO). */
1522 const struct target_desc *target_desc;
1525 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1526 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1528 /* DEPRECATED - use gdbarch_register() */
1529 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1531 extern void gdbarch_register (enum bfd_architecture architecture,
1532 gdbarch_init_ftype *,
1533 gdbarch_dump_tdep_ftype *);
1536 /* Return a freshly allocated, NULL terminated, array of the valid
1537 architecture names. Since architectures are registered during the
1538 _initialize phase this function only returns useful information
1539 once initialization has been completed. */
1541 extern const char **gdbarch_printable_names (void);
1544 /* Helper function. Search the list of ARCHES for a GDBARCH that
1545 matches the information provided by INFO. */
1547 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1550 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1551 basic initialization using values obtained from the INFO and TDEP
1552 parameters. set_gdbarch_*() functions are called to complete the
1553 initialization of the object. */
1555 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1558 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1559 It is assumed that the caller freeds the \`\`struct
1562 extern void gdbarch_free (struct gdbarch *);
1564 /* Get the obstack owned by ARCH. */
1566 extern obstack *gdbarch_obstack (gdbarch *arch);
1568 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1569 obstack. The memory is freed when the corresponding architecture
1572 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) \
1573 obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))
1575 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) \
1576 obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
1578 /* Duplicate STRING, returning an equivalent string that's allocated on the
1579 obstack associated with GDBARCH. The string is freed when the corresponding
1580 architecture is also freed. */
1582 extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
1584 /* Helper function. Force an update of the current architecture.
1586 The actual architecture selected is determined by INFO, \`\`(gdb) set
1587 architecture'' et.al., the existing architecture and BFD's default
1588 architecture. INFO should be initialized to zero and then selected
1589 fields should be updated.
1591 Returns non-zero if the update succeeds. */
1593 extern int gdbarch_update_p (struct gdbarch_info info);
1596 /* Helper function. Find an architecture matching info.
1598 INFO should be initialized using gdbarch_info_init, relevant fields
1599 set, and then finished using gdbarch_info_fill.
1601 Returns the corresponding architecture, or NULL if no matching
1602 architecture was found. */
1604 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1607 /* Helper function. Set the target gdbarch to "gdbarch". */
1609 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1612 /* Register per-architecture data-pointer.
1614 Reserve space for a per-architecture data-pointer. An identifier
1615 for the reserved data-pointer is returned. That identifer should
1616 be saved in a local static variable.
1618 Memory for the per-architecture data shall be allocated using
1619 gdbarch_obstack_zalloc. That memory will be deleted when the
1620 corresponding architecture object is deleted.
1622 When a previously created architecture is re-selected, the
1623 per-architecture data-pointer for that previous architecture is
1624 restored. INIT() is not re-called.
1626 Multiple registrarants for any architecture are allowed (and
1627 strongly encouraged). */
1629 struct gdbarch_data;
1631 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1632 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1633 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1634 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1635 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1636 struct gdbarch_data *data,
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 /* Initialize the current value of the specified per-architecture
2246 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2247 struct gdbarch_data *data,
2250 gdb_assert (data->index < gdbarch->nr_data);
2251 gdb_assert (gdbarch->data[data->index] == NULL);
2252 gdb_assert (data->pre_init == NULL);
2253 gdbarch->data[data->index] = pointer;
2256 /* Return the current value of the specified per-architecture
2260 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2262 gdb_assert (data->index < gdbarch->nr_data);
2263 if (gdbarch->data[data->index] == NULL)
2265 /* The data-pointer isn't initialized, call init() to get a
2267 if (data->pre_init != NULL)
2268 /* Mid architecture creation: pass just the obstack, and not
2269 the entire architecture, as that way it isn't possible for
2270 pre-init code to refer to undefined architecture
2272 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2273 else if (gdbarch->initialized_p
2274 && data->post_init != NULL)
2275 /* Post architecture creation: pass the entire architecture
2276 (as all fields are valid), but be careful to also detect
2277 recursive references. */
2279 gdb_assert (data->init_p);
2281 gdbarch->data[data->index] = data->post_init (gdbarch);
2285 /* The architecture initialization hasn't completed - punt -
2286 hope that the caller knows what they are doing. Once
2287 deprecated_set_gdbarch_data has been initialized, this can be
2288 changed to an internal error. */
2290 gdb_assert (gdbarch->data[data->index] != NULL);
2292 return gdbarch->data[data->index];
2296 /* Keep a registry of the architectures known by GDB. */
2298 struct gdbarch_registration
2300 enum bfd_architecture bfd_architecture;
2301 gdbarch_init_ftype *init;
2302 gdbarch_dump_tdep_ftype *dump_tdep;
2303 struct gdbarch_list *arches;
2304 struct gdbarch_registration *next;
2307 static struct gdbarch_registration *gdbarch_registry = NULL;
2310 append_name (const char ***buf, int *nr, const char *name)
2312 *buf = XRESIZEVEC (const char *, *buf, *nr + 1);
2318 gdbarch_printable_names (void)
2320 /* Accumulate a list of names based on the registed list of
2323 const char **arches = NULL;
2324 struct gdbarch_registration *rego;
2326 for (rego = gdbarch_registry;
2330 const struct bfd_arch_info *ap;
2331 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2333 internal_error (__FILE__, __LINE__,
2334 _("gdbarch_architecture_names: multi-arch unknown"));
2337 append_name (&arches, &nr_arches, ap->printable_name);
2342 append_name (&arches, &nr_arches, NULL);
2348 gdbarch_register (enum bfd_architecture bfd_architecture,
2349 gdbarch_init_ftype *init,
2350 gdbarch_dump_tdep_ftype *dump_tdep)
2352 struct gdbarch_registration **curr;
2353 const struct bfd_arch_info *bfd_arch_info;
2355 /* Check that BFD recognizes this architecture */
2356 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2357 if (bfd_arch_info == NULL)
2359 internal_error (__FILE__, __LINE__,
2360 _("gdbarch: Attempt to register "
2361 "unknown architecture (%d)"),
2364 /* Check that we haven't seen this architecture before. */
2365 for (curr = &gdbarch_registry;
2367 curr = &(*curr)->next)
2369 if (bfd_architecture == (*curr)->bfd_architecture)
2370 internal_error (__FILE__, __LINE__,
2371 _("gdbarch: Duplicate registration "
2372 "of architecture (%s)"),
2373 bfd_arch_info->printable_name);
2377 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2378 bfd_arch_info->printable_name,
2379 host_address_to_string (init));
2381 (*curr) = XNEW (struct gdbarch_registration);
2382 (*curr)->bfd_architecture = bfd_architecture;
2383 (*curr)->init = init;
2384 (*curr)->dump_tdep = dump_tdep;
2385 (*curr)->arches = NULL;
2386 (*curr)->next = NULL;
2390 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2391 gdbarch_init_ftype *init)
2393 gdbarch_register (bfd_architecture, init, NULL);
2397 /* Look for an architecture using gdbarch_info. */
2399 struct gdbarch_list *
2400 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2401 const struct gdbarch_info *info)
2403 for (; arches != NULL; arches = arches->next)
2405 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2407 if (info->byte_order != arches->gdbarch->byte_order)
2409 if (info->osabi != arches->gdbarch->osabi)
2411 if (info->target_desc != arches->gdbarch->target_desc)
2419 /* Find an architecture that matches the specified INFO. Create a new
2420 architecture if needed. Return that new architecture. */
2423 gdbarch_find_by_info (struct gdbarch_info info)
2425 struct gdbarch *new_gdbarch;
2426 struct gdbarch_registration *rego;
2428 /* Fill in missing parts of the INFO struct using a number of
2429 sources: "set ..."; INFOabfd supplied; and the global
2431 gdbarch_info_fill (&info);
2433 /* Must have found some sort of architecture. */
2434 gdb_assert (info.bfd_arch_info != NULL);
2438 fprintf_unfiltered (gdb_stdlog,
2439 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2440 (info.bfd_arch_info != NULL
2441 ? info.bfd_arch_info->printable_name
2443 fprintf_unfiltered (gdb_stdlog,
2444 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2446 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2447 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2449 fprintf_unfiltered (gdb_stdlog,
2450 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2451 info.osabi, gdbarch_osabi_name (info.osabi));
2452 fprintf_unfiltered (gdb_stdlog,
2453 "gdbarch_find_by_info: info.abfd %s\n",
2454 host_address_to_string (info.abfd));
2455 fprintf_unfiltered (gdb_stdlog,
2456 "gdbarch_find_by_info: info.tdep_info %s\n",
2457 host_address_to_string (info.tdep_info));
2460 /* Find the tdep code that knows about this architecture. */
2461 for (rego = gdbarch_registry;
2464 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2469 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2470 "No matching architecture\n");
2474 /* Ask the tdep code for an architecture that matches "info". */
2475 new_gdbarch = rego->init (info, rego->arches);
2477 /* Did the tdep code like it? No. Reject the change and revert to
2478 the old architecture. */
2479 if (new_gdbarch == NULL)
2482 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2483 "Target rejected architecture\n");
2487 /* Is this a pre-existing architecture (as determined by already
2488 being initialized)? Move it to the front of the architecture
2489 list (keeping the list sorted Most Recently Used). */
2490 if (new_gdbarch->initialized_p)
2492 struct gdbarch_list **list;
2493 struct gdbarch_list *self;
2495 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2496 "Previous architecture %s (%s) selected\n",
2497 host_address_to_string (new_gdbarch),
2498 new_gdbarch->bfd_arch_info->printable_name);
2499 /* Find the existing arch in the list. */
2500 for (list = ®o->arches;
2501 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2502 list = &(*list)->next);
2503 /* It had better be in the list of architectures. */
2504 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2507 (*list) = self->next;
2508 /* Insert SELF at the front. */
2509 self->next = rego->arches;
2510 rego->arches = self;
2515 /* It's a new architecture. */
2517 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2518 "New architecture %s (%s) selected\n",
2519 host_address_to_string (new_gdbarch),
2520 new_gdbarch->bfd_arch_info->printable_name);
2522 /* Insert the new architecture into the front of the architecture
2523 list (keep the list sorted Most Recently Used). */
2525 struct gdbarch_list *self = XNEW (struct gdbarch_list);
2526 self->next = rego->arches;
2527 self->gdbarch = new_gdbarch;
2528 rego->arches = self;
2531 /* Check that the newly installed architecture is valid. Plug in
2532 any post init values. */
2533 new_gdbarch->dump_tdep = rego->dump_tdep;
2534 verify_gdbarch (new_gdbarch);
2535 new_gdbarch->initialized_p = 1;
2538 gdbarch_dump (new_gdbarch, gdb_stdlog);
2543 /* Make the specified architecture current. */
2546 set_target_gdbarch (struct gdbarch *new_gdbarch)
2548 gdb_assert (new_gdbarch != NULL);
2549 gdb_assert (new_gdbarch->initialized_p);
2550 current_inferior ()->gdbarch = new_gdbarch;
2551 gdb::observers::architecture_changed.notify (new_gdbarch);
2552 registers_changed ();
2555 /* Return the current inferior's arch. */
2558 target_gdbarch (void)
2560 return current_inferior ()->gdbarch;
2563 void _initialize_gdbarch ();
2565 _initialize_gdbarch ()
2567 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2568 Set architecture debugging."), _("\\
2569 Show architecture debugging."), _("\\
2570 When non-zero, architecture debugging is enabled."),
2573 &setdebuglist, &showdebuglist);
2579 ..
/move-if-change new-gdbarch.c gdbarch.c