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 # Handle special encoding of static variables in stabs debug info.
846 F
;const char
*;static_transform_name
;const char
*name
;name
847 # Set if the address in N_SO or N_FUN stabs may be zero.
848 v
;int
;sofun_address_maybe_missing
;;;0;0;;0
850 # Parse the instruction at ADDR storing in the record execution log
851 # the registers REGCACHE and memory ranges that will be affected when
852 # the instruction executes, along with their current values.
853 # Return -1 if something goes wrong, 0 otherwise.
854 M
;int
;process_record
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
856 # Save process state after a signal.
857 # Return -1 if something goes wrong, 0 otherwise.
858 M
;int
;process_record_signal
;struct regcache
*regcache
, enum gdb_signal signal
;regcache
, signal
860 # Signal translation: translate inferior's signal (target's) number
861 # into GDB's representation. The implementation of this method must
862 # be host independent. IOW, don't rely on symbols of the NAT_FILE
863 # header (the nm-*.h files), the host <signal.h> header, or similar
864 # headers. This is mainly used when cross-debugging core files ---
865 # "Live" targets hide the translation behind the target interface
866 # (target_wait, target_resume, etc.).
867 M
;enum gdb_signal
;gdb_signal_from_target
;int signo
;signo
869 # Signal translation: translate the GDB's internal signal number into
870 # the inferior's signal (target's) representation. The implementation
871 # of this method must be host independent. IOW, don't rely on symbols
872 # of the NAT_FILE header (the nm-*.h files), the host <signal.h>
873 # header, or similar headers.
874 # Return the target signal number if found, or -1 if the GDB internal
875 # signal number is invalid.
876 M
;int
;gdb_signal_to_target
;enum gdb_signal signal
;signal
878 # Extra signal info inspection.
880 # Return a type suitable to inspect extra signal information.
881 M
;struct
type *;get_siginfo_type
;void
;
883 # Record architecture-specific information from the symbol table.
884 M
;void
;record_special_symbol
;struct objfile
*objfile
, asymbol
*sym
;objfile
, sym
886 # Function for the 'catch syscall' feature.
888 # Get architecture-specific system calls information from registers.
889 M
;LONGEST
;get_syscall_number
;thread_info
*thread
;thread
891 # The filename of the XML syscall for this architecture.
892 v
;const char
*;xml_syscall_file
;;;0;0;;0;pstring
(gdbarch-
>xml_syscall_file
)
894 # Information about system calls from this architecture
895 v
;struct syscalls_info
*;syscalls_info
;;;0;0;;0;host_address_to_string
(gdbarch-
>syscalls_info
)
897 # SystemTap related fields and functions.
899 # A NULL-terminated array of prefixes used to mark an integer constant
900 # on the architecture's assembly.
901 # For example, on x86 integer constants are written as:
903 # \$10 ;; integer constant 10
905 # in this case, this prefix would be the character \`\$\'.
906 v
;const char
*const
*;stap_integer_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_prefixes
)
908 # A NULL-terminated array of suffixes used to mark an integer constant
909 # on the architecture's assembly.
910 v
;const char
*const
*;stap_integer_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_integer_suffixes
)
912 # A NULL-terminated array of prefixes used to mark a register name on
913 # the architecture's assembly.
914 # For example, on x86 the register name is written as:
916 # \%eax ;; register eax
918 # in this case, this prefix would be the character \`\%\'.
919 v
;const char
*const
*;stap_register_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_prefixes
)
921 # A NULL-terminated array of suffixes used to mark a register name on
922 # the architecture's assembly.
923 v
;const char
*const
*;stap_register_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_suffixes
)
925 # A NULL-terminated array of prefixes used to mark a register
926 # indirection on the architecture's assembly.
927 # For example, on x86 the register indirection is written as:
929 # \(\%eax\) ;; indirecting eax
931 # in this case, this prefix would be the charater \`\(\'.
933 # Please note that we use the indirection prefix also for register
934 # displacement, e.g., \`4\(\%eax\)\' on x86.
935 v
;const char
*const
*;stap_register_indirection_prefixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_prefixes
)
937 # A NULL-terminated array of suffixes used to mark a register
938 # indirection on the architecture's assembly.
939 # For example, on x86 the register indirection is written as:
941 # \(\%eax\) ;; indirecting eax
943 # in this case, this prefix would be the charater \`\)\'.
945 # Please note that we use the indirection suffix also for register
946 # displacement, e.g., \`4\(\%eax\)\' on x86.
947 v
;const char
*const
*;stap_register_indirection_suffixes
;;;0;0;;0;pstring_list
(gdbarch-
>stap_register_indirection_suffixes
)
949 # Prefix(es) used to name a register using GDB's nomenclature.
951 # For example, on PPC a register is represented by a number in the assembly
952 # language (e.g., \`10\' is the 10th general-purpose register). However,
953 # inside GDB this same register has an \`r\' appended to its name, so the 10th
954 # register would be represented as \`r10\' internally.
955 v
;const char
*;stap_gdb_register_prefix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_prefix
)
957 # Suffix used to name a register using GDB's nomenclature.
958 v
;const char
*;stap_gdb_register_suffix
;;;0;0;;0;pstring
(gdbarch-
>stap_gdb_register_suffix
)
960 # Check if S is a single operand.
962 # Single operands can be:
963 # \- Literal integers, e.g. \`\$10\' on x86
964 # \- Register access, e.g. \`\%eax\' on x86
965 # \- Register indirection, e.g. \`\(\%eax\)\' on x86
966 # \- Register displacement, e.g. \`4\(\%eax\)\' on x86
968 # This function should check for these patterns on the string
969 # and return 1 if some were found, or zero otherwise. Please try to match
970 # as much info as you can from the string, i.e., if you have to match
971 # something like \`\(\%\', do not match just the \`\(\'.
972 M
;int
;stap_is_single_operand
;const char
*s
;s
974 # Function used to handle a "special case" in the parser.
976 # A "special case" is considered to be an unknown token, i.e., a token
977 # that the parser does not know how to parse. A good example of special
978 # case would be ARM's register displacement syntax:
980 # [R0, #4] ;; displacing R0 by 4
982 # Since the parser assumes that a register displacement is of the form:
984 # <number> <indirection_prefix> <register_name> <indirection_suffix>
986 # it means that it will not be able to recognize and parse this odd syntax.
987 # Therefore, we should add a special case function that will handle this token.
989 # This function should generate the proper expression form of the expression
990 # using GDB\'s internal expression mechanism (e.g., \`write_exp_elt_opcode\'
991 # and so on). It should also return 1 if the parsing was successful, or zero
992 # if the token was not recognized as a special token (in this case, returning
993 # zero means that the special parser is deferring the parsing to the generic
994 # parser), and should advance the buffer pointer (p->arg).
995 M
;int
;stap_parse_special_token
;struct stap_parse_info
*p
;p
997 # Perform arch-dependent adjustments to a register name.
999 # In very specific situations, it may be necessary for the register
1000 # name present in a SystemTap probe's argument to be handled in a
1001 # special way. For example, on i386, GCC may over-optimize the
1002 # register allocation and use smaller registers than necessary. In
1003 # such cases, the client that is reading and evaluating the SystemTap
1004 # probe (ourselves) will need to actually fetch values from the wider
1005 # version of the register in question.
1007 # To illustrate the example, consider the following probe argument
1012 # This argument says that its value can be found at the %ax register,
1013 # which is a 16-bit register. However, the argument's prefix says
1014 # that its type is "uint32_t", which is 32-bit in size. Therefore, in
1015 # this case, GDB should actually fetch the probe's value from register
1016 # %eax, not %ax. In this scenario, this function would actually
1017 # replace the register name from %ax to %eax.
1019 # The rationale for this can be found at PR breakpoints/24541.
1020 M
;std
::string
;stap_adjust_register
;struct stap_parse_info
*p
, const std
::string \
®name
, int regnum
;p
, regname
, regnum
1022 # DTrace related functions.
1024 # The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
1025 # NARG must be >= 0.
1026 M
;void
;dtrace_parse_probe_argument
;struct expr_builder
*builder
, int narg
;builder
, narg
1028 # True if the given ADDR does not contain the instruction sequence
1029 # corresponding to a disabled DTrace is-enabled probe.
1030 M
;int
;dtrace_probe_is_enabled
;CORE_ADDR addr
;addr
1032 # Enable a DTrace is-enabled probe at ADDR.
1033 M
;void
;dtrace_enable_probe
;CORE_ADDR addr
;addr
1035 # Disable a DTrace is-enabled probe at ADDR.
1036 M
;void
;dtrace_disable_probe
;CORE_ADDR addr
;addr
1038 # True if the list of shared libraries is one and only for all
1039 # processes, as opposed to a list of shared libraries per inferior.
1040 # This usually means that all processes, although may or may not share
1041 # an address space, will see the same set of symbols at the same
1043 v
;int
;has_global_solist
;;;0;0;;0
1045 # On some targets, even though each inferior has its own private
1046 # address space, the debug interface takes care of making breakpoints
1047 # visible to all address spaces automatically. For such cases,
1048 # this property should be set to true.
1049 v
;int
;has_global_breakpoints
;;;0;0;;0
1051 # True if inferiors share an address space (e.g., uClinux).
1052 m
;int
;has_shared_address_space
;void
;;;default_has_shared_address_space
;;0
1054 # True if a fast tracepoint can be set at an address.
1055 m
;int
;fast_tracepoint_valid_at
;CORE_ADDR addr
, std
::string
*msg
;addr
, msg
;;default_fast_tracepoint_valid_at
;;0
1057 # Guess register state based on tracepoint location. Used for tracepoints
1058 # where no registers have been collected, but there's only one location,
1059 # allowing us to guess the PC value, and perhaps some other registers.
1060 # On entry, regcache has all registers marked as unavailable.
1061 m
;void
;guess_tracepoint_registers
;struct regcache
*regcache
, CORE_ADDR addr
;regcache
, addr
;;default_guess_tracepoint_registers
;;0
1063 # Return the "auto" target charset.
1064 f
;const char
*;auto_charset
;void
;;default_auto_charset
;default_auto_charset
;;0
1065 # Return the "auto" target wide charset.
1066 f
;const char
*;auto_wide_charset
;void
;;default_auto_wide_charset
;default_auto_wide_charset
;;0
1068 # If non-empty, this is a file extension that will be opened in place
1069 # of the file extension reported by the shared library list.
1071 # This is most useful for toolchains that use a post-linker tool,
1072 # where the names of the files run on the target differ in extension
1073 # compared to the names of the files GDB should load for debug info.
1074 v
;const char
*;solib_symbols_extension
;;;;;;;pstring
(gdbarch-
>solib_symbols_extension
)
1076 # If true, the target OS has DOS-based file system semantics. That
1077 # is, absolute paths include a drive name, and the backslash is
1078 # considered a directory separator.
1079 v
;int
;has_dos_based_file_system
;;;0;0;;0
1081 # Generate bytecodes to collect the return address in a frame.
1082 # Since the bytecodes run on the target, possibly with GDB not even
1083 # connected, the full unwinding machinery is not available, and
1084 # typically this function will issue bytecodes for one or more likely
1085 # places that the return address may be found.
1086 m
;void
;gen_return_address
;struct agent_expr
*ax
, struct axs_value
*value
, CORE_ADDR scope
;ax
, value
, scope
;;default_gen_return_address
;;0
1088 # Implement the "info proc" command.
1089 M
;void
;info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1091 # Implement the "info proc" command for core files. Noe that there
1092 # are two "info_proc"-like methods on gdbarch -- one for core files,
1093 # one for live targets.
1094 M
;void
;core_info_proc
;const char
*args
, enum info_proc_what what
;args
, what
1096 # Iterate over all objfiles in the order that makes the most sense
1097 # for the architecture to make global symbol searches.
1099 # CB is a callback function where OBJFILE is the objfile to be searched,
1100 # and CB_DATA a pointer to user-defined data (the same data that is passed
1101 # when calling this gdbarch method). The iteration stops if this function
1104 # CB_DATA is a pointer to some user-defined data to be passed to
1107 # If not NULL, CURRENT_OBJFILE corresponds to the objfile being
1108 # inspected when the symbol search was requested.
1109 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
1111 # Ravenscar arch-dependent ops.
1112 v
;struct ravenscar_arch_ops
*;ravenscar_ops
;;;NULL
;NULL
;;0;host_address_to_string
(gdbarch-
>ravenscar_ops
)
1114 # Return non-zero if the instruction at ADDR is a call; zero otherwise.
1115 m
;int
;insn_is_call
;CORE_ADDR addr
;addr
;;default_insn_is_call
;;0
1117 # Return non-zero if the instruction at ADDR is a return; zero otherwise.
1118 m
;int
;insn_is_ret
;CORE_ADDR addr
;addr
;;default_insn_is_ret
;;0
1120 # Return non-zero if the instruction at ADDR is a jump; zero otherwise.
1121 m
;int
;insn_is_jump
;CORE_ADDR addr
;addr
;;default_insn_is_jump
;;0
1123 # Return true if there's a program/permanent breakpoint planted in
1124 # memory at ADDRESS, return false otherwise.
1125 m
;bool
;program_breakpoint_here_p
;CORE_ADDR address
;address
;;default_program_breakpoint_here_p
;;0
1127 # Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
1128 # Return 0 if *READPTR is already at the end of the buffer.
1129 # Return -1 if there is insufficient buffer for a whole entry.
1130 # Return 1 if an entry was read into *TYPEP and *VALP.
1131 M
;int
;auxv_parse
;gdb_byte
**readptr
, gdb_byte
*endptr
, CORE_ADDR
*typep
, CORE_ADDR
*valp
;readptr
, endptr
, typep
, valp
1133 # Print the description of a single auxv entry described by TYPE and VAL
1135 m
;void
;print_auxv_entry
;struct ui_file
*file, CORE_ADDR
type, CORE_ADDR val
;file, type, val
;;default_print_auxv_entry
;;0
1137 # Find the address range of the current inferior's vsyscall/vDSO, and
1138 # write it to *RANGE. If the vsyscall's length can't be determined, a
1139 # range with zero length is returned. Returns true if the vsyscall is
1140 # found, false otherwise.
1141 m
;int
;vsyscall_range
;struct mem_range
*range
;range
;;default_vsyscall_range
;;0
1143 # Allocate SIZE bytes of PROT protected page aligned memory in inferior.
1144 # PROT has GDB_MMAP_PROT_* bitmask format.
1145 # Throw an error if it is not possible. Returned address is always valid.
1146 f
;CORE_ADDR
;infcall_mmap
;CORE_ADDR size
, unsigned prot
;size
, prot
;;default_infcall_mmap
;;0
1148 # Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
1149 # Print a warning if it is not possible.
1150 f
;void
;infcall_munmap
;CORE_ADDR addr
, CORE_ADDR size
;addr
, size
;;default_infcall_munmap
;;0
1152 # Return string (caller has to use xfree for it) with options for GCC
1153 # to produce code for this target, typically "-m64", "-m32" or "-m31".
1154 # These options are put before CU's DW_AT_producer compilation options so that
1155 # they can override it.
1156 m
;std
::string
;gcc_target_options
;void
;;;default_gcc_target_options
;;0
1158 # Return a regular expression that matches names used by this
1159 # architecture in GNU configury triplets. The result is statically
1160 # allocated and must not be freed. The default implementation simply
1161 # returns the BFD architecture name, which is correct in nearly every
1163 m
;const char
*;gnu_triplet_regexp
;void
;;;default_gnu_triplet_regexp
;;0
1165 # Return the size in 8-bit bytes of an addressable memory unit on this
1166 # architecture. This corresponds to the number of 8-bit bytes associated to
1167 # each address in memory.
1168 m
;int
;addressable_memory_unit_size
;void
;;;default_addressable_memory_unit_size
;;0
1170 # Functions for allowing a target to modify its disassembler options.
1171 v
;const char
*;disassembler_options_implicit
;;;0;0;;0;pstring
(gdbarch-
>disassembler_options_implicit
)
1172 v
;char
**;disassembler_options
;;;0;0;;0;pstring_ptr
(gdbarch-
>disassembler_options
)
1173 v
;const disasm_options_and_args_t
*;valid_disassembler_options
;;;0;0;;0;host_address_to_string
(gdbarch-
>valid_disassembler_options
)
1175 # Type alignment override method. Return the architecture specific
1176 # alignment required for TYPE. If there is no special handling
1177 # required for TYPE then return the value 0, GDB will then apply the
1178 # default rules as laid out in gdbtypes.c:type_align.
1179 m
;ULONGEST
;type_align
;struct
type *type;type;;default_type_align
;;0
1181 # Return a string containing any flags for the given PC in the given FRAME.
1182 f
;std
::string
;get_pc_address_flags
;frame_info
*frame
, CORE_ADDR pc
;frame
, pc
;;default_get_pc_address_flags
;;0
1191 function_list |
while do_read
1194 ${class} ${returntype:-} ${function} (${formal:-})
1198 eval echo "\" ${r}=\${${r}}\""
1200 if class_is_predicate_p
&& fallback_default_p
1202 echo "Error: predicate function ${function} can not have a non- multi-arch default" 1>&2
1206 if [ "x${invalid_p}" = "x0" ] && [ -n "${postdefault}" ]
1208 echo "Error: postdefault is useless when invalid_p=0" 1>&2
1212 if class_is_multiarch_p
1214 if class_is_predicate_p
; then :
1215 elif test "x${predefault}" = "x"
1217 echo "Error: pure multi-arch function ${function} must have a predefault" 1>&2
1231 /* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
1234 /* Dynamic architecture support for GDB, the GNU debugger.
1236 Copyright (C) 1998-2020 Free Software Foundation, Inc.
1238 This file is part of GDB.
1240 This program is free software; you can redistribute it and/or modify
1241 it under the terms of the GNU General Public License as published by
1242 the Free Software Foundation; either version 3 of the License, or
1243 (at your option) any later version.
1245 This program is distributed in the hope that it will be useful,
1246 but WITHOUT ANY WARRANTY; without even the implied warranty of
1247 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1248 GNU General Public License for more details.
1250 You should have received a copy of the GNU General Public License
1251 along with this program. If not, see <http://www.gnu.org/licenses/>. */
1253 /* This file was created with the aid of \`\`gdbarch.sh''. */
1262 exec > new-gdbarch.h
1270 #include "dis-asm.h"
1271 #include "gdb_obstack.h"
1280 struct minimal_symbol;
1284 struct disassemble_info;
1287 struct bp_target_info;
1293 struct stap_parse_info;
1294 struct expr_builder;
1295 struct ravenscar_arch_ops;
1297 struct syscalls_info;
1301 #include "regcache.h"
1303 /* The architecture associated with the inferior through the
1304 connection to the target.
1306 The architecture vector provides some information that is really a
1307 property of the inferior, accessed through a particular target:
1308 ptrace operations; the layout of certain RSP packets; the solib_ops
1309 vector; etc. To differentiate architecture accesses to
1310 per-inferior/target properties from
1311 per-thread/per-frame/per-objfile properties, accesses to
1312 per-inferior/target properties should be made through this
1315 /* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
1316 extern struct gdbarch *target_gdbarch (void);
1318 /* Callback type for the 'iterate_over_objfiles_in_search_order'
1321 typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
1322 (struct objfile *objfile, void *cb_data);
1324 /* Callback type for regset section iterators. The callback usually
1325 invokes the REGSET's supply or collect method, to which it must
1326 pass a buffer - for collects this buffer will need to be created using
1327 COLLECT_SIZE, for supply the existing buffer being read from should
1328 be at least SUPPLY_SIZE. SECT_NAME is a BFD section name, and HUMAN_NAME
1329 is used for diagnostic messages. CB_DATA should have been passed
1330 unchanged through the iterator. */
1332 typedef void (iterate_over_regset_sections_cb)
1333 (const char *sect_name, int supply_size, int collect_size,
1334 const struct regset *regset, const char *human_name, void *cb_data);
1336 /* For a function call, does the function return a value using a
1337 normal value return or a structure return - passing a hidden
1338 argument pointing to storage. For the latter, there are two
1339 cases: language-mandated structure return and target ABI
1340 structure return. */
1342 enum function_call_return_method
1344 /* Standard value return. */
1345 return_method_normal = 0,
1347 /* Language ABI structure return. This is handled
1348 by passing the return location as the first parameter to
1349 the function, even preceding "this". */
1350 return_method_hidden_param,
1352 /* Target ABI struct return. This is target-specific; for instance,
1353 on ia64 the first argument is passed in out0 but the hidden
1354 structure return pointer would normally be passed in r8. */
1355 return_method_struct,
1360 # function typedef's
1363 printf "/* The following are pre-initialized by GDBARCH. */\n"
1364 function_list |
while do_read
1369 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1370 printf "/* set_gdbarch_%s() - not applicable - pre-initialized. */\n" "$function"
1374 # function typedef's
1377 printf "/* The following are initialized by the target dependent code. */\n"
1378 function_list |
while do_read
1380 if [ -n "${comment}" ]
1382 echo "${comment}" |
sed \
1388 if class_is_predicate_p
1391 printf "extern int gdbarch_%s_p (struct gdbarch *gdbarch);\n" "$function"
1393 if class_is_variable_p
1396 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1397 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, %s %s);\n" "$function" "$returntype" "$function"
1399 if class_is_function_p
1402 if [ "x${formal}" = "xvoid" ] && class_is_multiarch_p
1404 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1405 elif class_is_multiarch_p
1407 printf "typedef %s (gdbarch_%s_ftype) (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1409 printf "typedef %s (gdbarch_%s_ftype) (%s);\n" "$returntype" "$function" "$formal"
1411 if [ "x${formal}" = "xvoid" ]
1413 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch);\n" "$returntype" "$function"
1415 printf "extern %s gdbarch_%s (struct gdbarch *gdbarch, %s);\n" "$returntype" "$function" "$formal"
1417 printf "extern void set_gdbarch_%s (struct gdbarch *gdbarch, gdbarch_%s_ftype *%s);\n" "$function" "$function" "$function"
1424 extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
1427 /* Mechanism for co-ordinating the selection of a specific
1430 GDB targets (*-tdep.c) can register an interest in a specific
1431 architecture. Other GDB components can register a need to maintain
1432 per-architecture data.
1434 The mechanisms below ensures that there is only a loose connection
1435 between the set-architecture command and the various GDB
1436 components. Each component can independently register their need
1437 to maintain architecture specific data with gdbarch.
1441 Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
1444 The more traditional mega-struct containing architecture specific
1445 data for all the various GDB components was also considered. Since
1446 GDB is built from a variable number of (fairly independent)
1447 components it was determined that the global aproach was not
1451 /* Register a new architectural family with GDB.
1453 Register support for the specified ARCHITECTURE with GDB. When
1454 gdbarch determines that the specified architecture has been
1455 selected, the corresponding INIT function is called.
1459 The INIT function takes two parameters: INFO which contains the
1460 information available to gdbarch about the (possibly new)
1461 architecture; ARCHES which is a list of the previously created
1462 \`\`struct gdbarch'' for this architecture.
1464 The INFO parameter is, as far as possible, be pre-initialized with
1465 information obtained from INFO.ABFD or the global defaults.
1467 The ARCHES parameter is a linked list (sorted most recently used)
1468 of all the previously created architures for this architecture
1469 family. The (possibly NULL) ARCHES->gdbarch can used to access
1470 values from the previously selected architecture for this
1471 architecture family.
1473 The INIT function shall return any of: NULL - indicating that it
1474 doesn't recognize the selected architecture; an existing \`\`struct
1475 gdbarch'' from the ARCHES list - indicating that the new
1476 architecture is just a synonym for an earlier architecture (see
1477 gdbarch_list_lookup_by_info()); a newly created \`\`struct gdbarch''
1478 - that describes the selected architecture (see gdbarch_alloc()).
1480 The DUMP_TDEP function shall print out all target specific values.
1481 Care should be taken to ensure that the function works in both the
1482 multi-arch and non- multi-arch cases. */
1486 struct gdbarch *gdbarch;
1487 struct gdbarch_list *next;
1492 /* Use default: NULL (ZERO). */
1493 const struct bfd_arch_info *bfd_arch_info;
1495 /* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
1496 enum bfd_endian byte_order;
1498 enum bfd_endian byte_order_for_code;
1500 /* Use default: NULL (ZERO). */
1503 /* Use default: NULL (ZERO). */
1506 /* Architecture-specific information. The generic form for targets
1507 that have extra requirements. */
1508 struct gdbarch_tdep_info *tdep_info;
1510 /* Architecture-specific target description data. Numerous targets
1511 need only this, so give them an easy way to hold it. */
1512 struct tdesc_arch_data *tdesc_data;
1514 /* SPU file system ID. This is a single integer, so using the
1515 generic form would only complicate code. Other targets may
1516 reuse this member if suitable. */
1520 /* Use default: GDB_OSABI_UNINITIALIZED (-1). */
1521 enum gdb_osabi osabi;
1523 /* Use default: NULL (ZERO). */
1524 const struct target_desc *target_desc;
1527 typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
1528 typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
1530 /* DEPRECATED - use gdbarch_register() */
1531 extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
1533 extern void gdbarch_register (enum bfd_architecture architecture,
1534 gdbarch_init_ftype *,
1535 gdbarch_dump_tdep_ftype *);
1538 /* Return a freshly allocated, NULL terminated, array of the valid
1539 architecture names. Since architectures are registered during the
1540 _initialize phase this function only returns useful information
1541 once initialization has been completed. */
1543 extern const char **gdbarch_printable_names (void);
1546 /* Helper function. Search the list of ARCHES for a GDBARCH that
1547 matches the information provided by INFO. */
1549 extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
1552 /* Helper function. Create a preliminary \`\`struct gdbarch''. Perform
1553 basic initialization using values obtained from the INFO and TDEP
1554 parameters. set_gdbarch_*() functions are called to complete the
1555 initialization of the object. */
1557 extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
1560 /* Helper function. Free a partially-constructed \`\`struct gdbarch''.
1561 It is assumed that the caller freeds the \`\`struct
1564 extern void gdbarch_free (struct gdbarch *);
1566 /* Get the obstack owned by ARCH. */
1568 extern obstack *gdbarch_obstack (gdbarch *arch);
1570 /* Helper function. Allocate memory from the \`\`struct gdbarch''
1571 obstack. The memory is freed when the corresponding architecture
1574 #define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) \
1575 obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))
1577 #define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) \
1578 obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
1580 /* Duplicate STRING, returning an equivalent string that's allocated on the
1581 obstack associated with GDBARCH. The string is freed when the corresponding
1582 architecture is also freed. */
1584 extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
1586 /* Helper function. Force an update of the current architecture.
1588 The actual architecture selected is determined by INFO, \`\`(gdb) set
1589 architecture'' et.al., the existing architecture and BFD's default
1590 architecture. INFO should be initialized to zero and then selected
1591 fields should be updated.
1593 Returns non-zero if the update succeeds. */
1595 extern int gdbarch_update_p (struct gdbarch_info info);
1598 /* Helper function. Find an architecture matching info.
1600 INFO should be initialized using gdbarch_info_init, relevant fields
1601 set, and then finished using gdbarch_info_fill.
1603 Returns the corresponding architecture, or NULL if no matching
1604 architecture was found. */
1606 extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
1609 /* Helper function. Set the target gdbarch to "gdbarch". */
1611 extern void set_target_gdbarch (struct gdbarch *gdbarch);
1614 /* Register per-architecture data-pointer.
1616 Reserve space for a per-architecture data-pointer. An identifier
1617 for the reserved data-pointer is returned. That identifer should
1618 be saved in a local static variable.
1620 Memory for the per-architecture data shall be allocated using
1621 gdbarch_obstack_zalloc. That memory will be deleted when the
1622 corresponding architecture object is deleted.
1624 When a previously created architecture is re-selected, the
1625 per-architecture data-pointer for that previous architecture is
1626 restored. INIT() is not re-called.
1628 Multiple registrarants for any architecture are allowed (and
1629 strongly encouraged). */
1631 struct gdbarch_data;
1633 typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
1634 extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
1635 typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
1636 extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
1637 extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
1638 struct gdbarch_data *data,
1641 extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
1644 /* Set the dynamic target-system-dependent parameters (architecture,
1645 byte-order, ...) using information found in the BFD. */
1647 extern void set_gdbarch_from_file (bfd *);
1650 /* Initialize the current architecture to the "first" one we find on
1653 extern void initialize_current_architecture (void);
1655 /* gdbarch trace variable */
1656 extern unsigned int gdbarch_debug;
1658 extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
1660 /* Return the number of cooked registers (raw + pseudo) for ARCH. */
1663 gdbarch_num_cooked_regs (gdbarch *arch)
1665 return gdbarch_num_regs (arch) + gdbarch_num_pseudo_regs (arch);
1671 ..
/move-if-change new-gdbarch.h gdbarch.h
1679 exec > new-gdbarch.c
1684 #include "arch-utils.h"
1687 #include "inferior.h"
1690 #include "floatformat.h"
1691 #include "reggroups.h"
1693 #include "gdb_obstack.h"
1694 #include "observable.h"
1695 #include "regcache.h"
1696 #include "objfiles.h"
1698 #include "frame-unwind.h"
1699 #include "dummy-frame.h"
1701 /* Static function declarations */
1703 static void alloc_gdbarch_data (struct gdbarch *);
1705 /* Non-zero if we want to trace architecture code. */
1707 #ifndef GDBARCH_DEBUG
1708 #define GDBARCH_DEBUG 0
1710 unsigned int gdbarch_debug = GDBARCH_DEBUG;
1712 show_gdbarch_debug (struct ui_file *file, int from_tty,
1713 struct cmd_list_element *c, const char *value)
1715 fprintf_filtered (file, _("Architecture debugging is %s.\\n"), value);
1719 pformat (const struct floatformat **format)
1724 /* Just print out one of them - this is only for diagnostics. */
1725 return format[0]->name;
1729 pstring (const char *string)
1737 pstring_ptr (char **string)
1739 if (string == NULL || *string == NULL)
1744 /* Helper function to print a list of strings, represented as "const
1745 char *const *". The list is printed comma-separated. */
1748 pstring_list (const char *const *list)
1750 static char ret[100];
1751 const char *const *p;
1758 for (p = list; *p != NULL && offset < sizeof (ret); ++p)
1760 size_t s = xsnprintf (ret + offset, sizeof (ret) - offset, "%s, ", *p);
1766 gdb_assert (offset - 2 < sizeof (ret));
1767 ret[offset - 2] = '\0';
1775 # gdbarch open the gdbarch object
1777 printf "/* Maintain the struct gdbarch object. */\n"
1779 printf "struct gdbarch\n"
1781 printf " /* Has this architecture been fully initialized? */\n"
1782 printf " int initialized_p;\n"
1784 printf " /* An obstack bound to the lifetime of the architecture. */\n"
1785 printf " struct obstack *obstack;\n"
1787 printf " /* basic architectural information. */\n"
1788 function_list |
while do_read
1792 printf " %s %s;\n" "$returntype" "$function"
1796 printf " /* target specific vector. */\n"
1797 printf " struct gdbarch_tdep *tdep;\n"
1798 printf " gdbarch_dump_tdep_ftype *dump_tdep;\n"
1800 printf " /* per-architecture data-pointers. */\n"
1801 printf " unsigned nr_data;\n"
1802 printf " void **data;\n"
1805 /* Multi-arch values.
1807 When extending this structure you must:
1809 Add the field below.
1811 Declare set/get functions and define the corresponding
1814 gdbarch_alloc(): If zero/NULL is not a suitable default,
1815 initialize the new field.
1817 verify_gdbarch(): Confirm that the target updated the field
1820 gdbarch_dump(): Add a fprintf_unfiltered call so that the new
1823 get_gdbarch(): Implement the set/get functions (probably using
1824 the macro's as shortcuts).
1829 function_list |
while do_read
1831 if class_is_variable_p
1833 printf " %s %s;\n" "$returntype" "$function"
1834 elif class_is_function_p
1836 printf " gdbarch_%s_ftype *%s;\n" "$function" "$function"
1841 # Create a new gdbarch struct
1844 /* Create a new \`\`struct gdbarch'' based on information provided by
1845 \`\`struct gdbarch_info''. */
1850 gdbarch_alloc (const struct gdbarch_info *info,
1851 struct gdbarch_tdep *tdep)
1853 struct gdbarch *gdbarch;
1855 /* Create an obstack for allocating all the per-architecture memory,
1856 then use that to allocate the architecture vector. */
1857 struct obstack *obstack = XNEW (struct obstack);
1858 obstack_init (obstack);
1859 gdbarch = XOBNEW (obstack, struct gdbarch);
1860 memset (gdbarch, 0, sizeof (*gdbarch));
1861 gdbarch->obstack = obstack;
1863 alloc_gdbarch_data (gdbarch);
1865 gdbarch->tdep = tdep;
1868 function_list |
while do_read
1872 printf " gdbarch->%s = info->%s;\n" "$function" "$function"
1876 printf " /* Force the explicit initialization of these. */\n"
1877 function_list |
while do_read
1879 if class_is_function_p || class_is_variable_p
1881 if [ -n "${predefault}" ] && [ "x${predefault}" != "x0" ]
1883 printf " gdbarch->%s = %s;\n" "$function" "$predefault"
1888 /* gdbarch_alloc() */
1894 # Free a gdbarch struct.
1899 obstack *gdbarch_obstack (gdbarch *arch)
1901 return arch->obstack;
1904 /* See gdbarch.h. */
1907 gdbarch_obstack_strdup (struct gdbarch *arch, const char *string)
1909 return obstack_strdup (arch->obstack, string);
1913 /* Free a gdbarch struct. This should never happen in normal
1914 operation --- once you've created a gdbarch, you keep it around.
1915 However, if an architecture's init function encounters an error
1916 building the structure, it may need to clean up a partially
1917 constructed gdbarch. */
1920 gdbarch_free (struct gdbarch *arch)
1922 struct obstack *obstack;
1924 gdb_assert (arch != NULL);
1925 gdb_assert (!arch->initialized_p);
1926 obstack = arch->obstack;
1927 obstack_free (obstack, 0); /* Includes the ARCH. */
1932 # verify a new architecture
1936 /* Ensure that all values in a GDBARCH are reasonable. */
1939 verify_gdbarch (struct gdbarch *gdbarch)
1944 if (gdbarch->byte_order == BFD_ENDIAN_UNKNOWN)
1945 log.puts ("\n\tbyte-order");
1946 if (gdbarch->bfd_arch_info == NULL)
1947 log.puts ("\n\tbfd_arch_info");
1948 /* Check those that need to be defined for the given multi-arch level. */
1950 function_list |
while do_read
1952 if class_is_function_p || class_is_variable_p
1954 if [ "x${invalid_p}" = "x0" ]
1956 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
1957 elif class_is_predicate_p
1959 printf " /* Skip verify of %s, has predicate. */\n" "$function"
1960 # FIXME: See do_read for potential simplification
1961 elif [ -n "${invalid_p}" ] && [ -n "${postdefault}" ]
1963 printf " if (%s)\n" "$invalid_p"
1964 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1965 elif [ -n "${predefault}" ] && [ -n "${postdefault}" ]
1967 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
1968 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1969 elif [ -n "${postdefault}" ]
1971 printf " if (gdbarch->%s == 0)\n" "$function"
1972 printf " gdbarch->%s = %s;\n" "$function" "$postdefault"
1973 elif [ -n "${invalid_p}" ]
1975 printf " if (%s)\n" "$invalid_p"
1976 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
1977 elif [ -n "${predefault}" ]
1979 printf " if (gdbarch->%s == %s)\n" "$function" "$predefault"
1980 printf " log.puts (\"\\\\n\\\\t%s\");\n" "$function"
1986 internal_error (__FILE__, __LINE__,
1987 _("verify_gdbarch: the following are invalid ...%s"),
1992 # dump the structure
1996 /* Print out the details of the current architecture. */
1999 gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
2001 const char *gdb_nm_file = "<not-defined>";
2003 #if defined (GDB_NM_FILE)
2004 gdb_nm_file = GDB_NM_FILE;
2006 fprintf_unfiltered (file,
2007 "gdbarch_dump: GDB_NM_FILE = %s\\n",
2010 function_list |
sort '-t;' -k 3 |
while do_read
2012 # First the predicate
2013 if class_is_predicate_p
2015 printf " fprintf_unfiltered (file,\n"
2016 printf " \"gdbarch_dump: gdbarch_%s_p() = %%d\\\\n\",\n" "$function"
2017 printf " gdbarch_%s_p (gdbarch));\n" "$function"
2019 # Print the corresponding value.
2020 if class_is_function_p
2022 printf " fprintf_unfiltered (file,\n"
2023 printf " \"gdbarch_dump: %s = <%%s>\\\\n\",\n" "$function"
2024 printf " host_address_to_string (gdbarch->%s));\n" "$function"
2027 case "${print}:${returntype}" in
2030 print
="core_addr_to_string_nz (gdbarch->${function})"
2034 print
="plongest (gdbarch->${function})"
2040 printf " fprintf_unfiltered (file,\n"
2041 printf " \"gdbarch_dump: %s = %s\\\\n\",\n" "$function" "$fmt"
2042 printf " %s);\n" "$print"
2046 if (gdbarch->dump_tdep != NULL)
2047 gdbarch->dump_tdep (gdbarch, file);
2055 struct gdbarch_tdep *
2056 gdbarch_tdep (struct gdbarch *gdbarch)
2058 if (gdbarch_debug >= 2)
2059 fprintf_unfiltered (gdb_stdlog, "gdbarch_tdep called\\n");
2060 return gdbarch->tdep;
2064 function_list |
while do_read
2066 if class_is_predicate_p
2070 printf "gdbarch_%s_p (struct gdbarch *gdbarch)\n" "$function"
2072 printf " gdb_assert (gdbarch != NULL);\n"
2073 printf " return %s;\n" "$predicate"
2076 if class_is_function_p
2079 printf "%s\n" "$returntype"
2080 if [ "x${formal}" = "xvoid" ]
2082 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2084 printf "gdbarch_%s (struct gdbarch *gdbarch, %s)\n" "$function" "$formal"
2087 printf " gdb_assert (gdbarch != NULL);\n"
2088 printf " gdb_assert (gdbarch->%s != NULL);\n" "$function"
2089 if class_is_predicate_p
&& test -n "${predefault}"
2091 # Allow a call to a function with a predicate.
2092 printf " /* Do not check predicate: %s, allow call. */\n" "$predicate"
2094 printf " if (gdbarch_debug >= 2)\n"
2095 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2096 if [ "x${actual:-}" = "x-" ] ||
[ "x${actual:-}" = "x" ]
2098 if class_is_multiarch_p
2105 if class_is_multiarch_p
2107 params
="gdbarch, ${actual}"
2112 if [ "x${returntype}" = "xvoid" ]
2114 printf " gdbarch->%s (%s);\n" "$function" "$params"
2116 printf " return gdbarch->%s (%s);\n" "$function" "$params"
2121 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2122 printf " %s gdbarch_%s_ftype %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$function" "$function"
2124 printf " gdbarch->%s = %s;\n" "$function" "$function"
2126 elif class_is_variable_p
2129 printf "%s\n" "$returntype"
2130 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2132 printf " gdb_assert (gdbarch != NULL);\n"
2133 if [ "x${invalid_p}" = "x0" ]
2135 printf " /* Skip verify of %s, invalid_p == 0 */\n" "$function"
2136 elif [ -n "${invalid_p}" ]
2138 printf " /* Check variable is valid. */\n"
2139 printf " gdb_assert (!(%s));\n" "$invalid_p"
2140 elif [ -n "${predefault}" ]
2142 printf " /* Check variable changed from pre-default. */\n"
2143 printf " gdb_assert (gdbarch->%s != %s);\n" "$function" "$predefault"
2145 printf " if (gdbarch_debug >= 2)\n"
2146 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2147 printf " return gdbarch->%s;\n" "$function"
2151 printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
2152 printf " %s %s %s)\n" "$(echo "$function" | sed -e 's/./ /g')" "$returntype" "$function"
2154 printf " gdbarch->%s = %s;\n" "$function" "$function"
2156 elif class_is_info_p
2159 printf "%s\n" "$returntype"
2160 printf "gdbarch_%s (struct gdbarch *gdbarch)\n" "$function"
2162 printf " gdb_assert (gdbarch != NULL);\n"
2163 printf " if (gdbarch_debug >= 2)\n"
2164 printf " fprintf_unfiltered (gdb_stdlog, \"gdbarch_%s called\\\\n\");\n" "$function"
2165 printf " return gdbarch->%s;\n" "$function"
2170 # All the trailing guff
2174 /* Keep a registry of per-architecture data-pointers required by GDB
2181 gdbarch_data_pre_init_ftype *pre_init;
2182 gdbarch_data_post_init_ftype *post_init;
2185 struct gdbarch_data_registration
2187 struct gdbarch_data *data;
2188 struct gdbarch_data_registration *next;
2191 struct gdbarch_data_registry
2194 struct gdbarch_data_registration *registrations;
2197 struct gdbarch_data_registry gdbarch_data_registry =
2202 static struct gdbarch_data *
2203 gdbarch_data_register (gdbarch_data_pre_init_ftype *pre_init,
2204 gdbarch_data_post_init_ftype *post_init)
2206 struct gdbarch_data_registration **curr;
2208 /* Append the new registration. */
2209 for (curr = &gdbarch_data_registry.registrations;
2211 curr = &(*curr)->next);
2212 (*curr) = XNEW (struct gdbarch_data_registration);
2213 (*curr)->next = NULL;
2214 (*curr)->data = XNEW (struct gdbarch_data);
2215 (*curr)->data->index = gdbarch_data_registry.nr++;
2216 (*curr)->data->pre_init = pre_init;
2217 (*curr)->data->post_init = post_init;
2218 (*curr)->data->init_p = 1;
2219 return (*curr)->data;
2222 struct gdbarch_data *
2223 gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *pre_init)
2225 return gdbarch_data_register (pre_init, NULL);
2228 struct gdbarch_data *
2229 gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *post_init)
2231 return gdbarch_data_register (NULL, post_init);
2234 /* Create/delete the gdbarch data vector. */
2237 alloc_gdbarch_data (struct gdbarch *gdbarch)
2239 gdb_assert (gdbarch->data == NULL);
2240 gdbarch->nr_data = gdbarch_data_registry.nr;
2241 gdbarch->data = GDBARCH_OBSTACK_CALLOC (gdbarch, gdbarch->nr_data, void *);
2244 /* Initialize the current value of the specified per-architecture
2248 deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
2249 struct gdbarch_data *data,
2252 gdb_assert (data->index < gdbarch->nr_data);
2253 gdb_assert (gdbarch->data[data->index] == NULL);
2254 gdb_assert (data->pre_init == NULL);
2255 gdbarch->data[data->index] = pointer;
2258 /* Return the current value of the specified per-architecture
2262 gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *data)
2264 gdb_assert (data->index < gdbarch->nr_data);
2265 if (gdbarch->data[data->index] == NULL)
2267 /* The data-pointer isn't initialized, call init() to get a
2269 if (data->pre_init != NULL)
2270 /* Mid architecture creation: pass just the obstack, and not
2271 the entire architecture, as that way it isn't possible for
2272 pre-init code to refer to undefined architecture
2274 gdbarch->data[data->index] = data->pre_init (gdbarch->obstack);
2275 else if (gdbarch->initialized_p
2276 && data->post_init != NULL)
2277 /* Post architecture creation: pass the entire architecture
2278 (as all fields are valid), but be careful to also detect
2279 recursive references. */
2281 gdb_assert (data->init_p);
2283 gdbarch->data[data->index] = data->post_init (gdbarch);
2287 /* The architecture initialization hasn't completed - punt -
2288 hope that the caller knows what they are doing. Once
2289 deprecated_set_gdbarch_data has been initialized, this can be
2290 changed to an internal error. */
2292 gdb_assert (gdbarch->data[data->index] != NULL);
2294 return gdbarch->data[data->index];
2298 /* Keep a registry of the architectures known by GDB. */
2300 struct gdbarch_registration
2302 enum bfd_architecture bfd_architecture;
2303 gdbarch_init_ftype *init;
2304 gdbarch_dump_tdep_ftype *dump_tdep;
2305 struct gdbarch_list *arches;
2306 struct gdbarch_registration *next;
2309 static struct gdbarch_registration *gdbarch_registry = NULL;
2312 append_name (const char ***buf, int *nr, const char *name)
2314 *buf = XRESIZEVEC (const char *, *buf, *nr + 1);
2320 gdbarch_printable_names (void)
2322 /* Accumulate a list of names based on the registed list of
2325 const char **arches = NULL;
2326 struct gdbarch_registration *rego;
2328 for (rego = gdbarch_registry;
2332 const struct bfd_arch_info *ap;
2333 ap = bfd_lookup_arch (rego->bfd_architecture, 0);
2335 internal_error (__FILE__, __LINE__,
2336 _("gdbarch_architecture_names: multi-arch unknown"));
2339 append_name (&arches, &nr_arches, ap->printable_name);
2344 append_name (&arches, &nr_arches, NULL);
2350 gdbarch_register (enum bfd_architecture bfd_architecture,
2351 gdbarch_init_ftype *init,
2352 gdbarch_dump_tdep_ftype *dump_tdep)
2354 struct gdbarch_registration **curr;
2355 const struct bfd_arch_info *bfd_arch_info;
2357 /* Check that BFD recognizes this architecture */
2358 bfd_arch_info = bfd_lookup_arch (bfd_architecture, 0);
2359 if (bfd_arch_info == NULL)
2361 internal_error (__FILE__, __LINE__,
2362 _("gdbarch: Attempt to register "
2363 "unknown architecture (%d)"),
2366 /* Check that we haven't seen this architecture before. */
2367 for (curr = &gdbarch_registry;
2369 curr = &(*curr)->next)
2371 if (bfd_architecture == (*curr)->bfd_architecture)
2372 internal_error (__FILE__, __LINE__,
2373 _("gdbarch: Duplicate registration "
2374 "of architecture (%s)"),
2375 bfd_arch_info->printable_name);
2379 fprintf_unfiltered (gdb_stdlog, "register_gdbarch_init (%s, %s)\n",
2380 bfd_arch_info->printable_name,
2381 host_address_to_string (init));
2383 (*curr) = XNEW (struct gdbarch_registration);
2384 (*curr)->bfd_architecture = bfd_architecture;
2385 (*curr)->init = init;
2386 (*curr)->dump_tdep = dump_tdep;
2387 (*curr)->arches = NULL;
2388 (*curr)->next = NULL;
2392 register_gdbarch_init (enum bfd_architecture bfd_architecture,
2393 gdbarch_init_ftype *init)
2395 gdbarch_register (bfd_architecture, init, NULL);
2399 /* Look for an architecture using gdbarch_info. */
2401 struct gdbarch_list *
2402 gdbarch_list_lookup_by_info (struct gdbarch_list *arches,
2403 const struct gdbarch_info *info)
2405 for (; arches != NULL; arches = arches->next)
2407 if (info->bfd_arch_info != arches->gdbarch->bfd_arch_info)
2409 if (info->byte_order != arches->gdbarch->byte_order)
2411 if (info->osabi != arches->gdbarch->osabi)
2413 if (info->target_desc != arches->gdbarch->target_desc)
2421 /* Find an architecture that matches the specified INFO. Create a new
2422 architecture if needed. Return that new architecture. */
2425 gdbarch_find_by_info (struct gdbarch_info info)
2427 struct gdbarch *new_gdbarch;
2428 struct gdbarch_registration *rego;
2430 /* Fill in missing parts of the INFO struct using a number of
2431 sources: "set ..."; INFOabfd supplied; and the global
2433 gdbarch_info_fill (&info);
2435 /* Must have found some sort of architecture. */
2436 gdb_assert (info.bfd_arch_info != NULL);
2440 fprintf_unfiltered (gdb_stdlog,
2441 "gdbarch_find_by_info: info.bfd_arch_info %s\n",
2442 (info.bfd_arch_info != NULL
2443 ? info.bfd_arch_info->printable_name
2445 fprintf_unfiltered (gdb_stdlog,
2446 "gdbarch_find_by_info: info.byte_order %d (%s)\n",
2448 (info.byte_order == BFD_ENDIAN_BIG ? "big"
2449 : info.byte_order == BFD_ENDIAN_LITTLE ? "little"
2451 fprintf_unfiltered (gdb_stdlog,
2452 "gdbarch_find_by_info: info.osabi %d (%s)\n",
2453 info.osabi, gdbarch_osabi_name (info.osabi));
2454 fprintf_unfiltered (gdb_stdlog,
2455 "gdbarch_find_by_info: info.abfd %s\n",
2456 host_address_to_string (info.abfd));
2457 fprintf_unfiltered (gdb_stdlog,
2458 "gdbarch_find_by_info: info.tdep_info %s\n",
2459 host_address_to_string (info.tdep_info));
2462 /* Find the tdep code that knows about this architecture. */
2463 for (rego = gdbarch_registry;
2466 if (rego->bfd_architecture == info.bfd_arch_info->arch)
2471 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2472 "No matching architecture\n");
2476 /* Ask the tdep code for an architecture that matches "info". */
2477 new_gdbarch = rego->init (info, rego->arches);
2479 /* Did the tdep code like it? No. Reject the change and revert to
2480 the old architecture. */
2481 if (new_gdbarch == NULL)
2484 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2485 "Target rejected architecture\n");
2489 /* Is this a pre-existing architecture (as determined by already
2490 being initialized)? Move it to the front of the architecture
2491 list (keeping the list sorted Most Recently Used). */
2492 if (new_gdbarch->initialized_p)
2494 struct gdbarch_list **list;
2495 struct gdbarch_list *self;
2497 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2498 "Previous architecture %s (%s) selected\n",
2499 host_address_to_string (new_gdbarch),
2500 new_gdbarch->bfd_arch_info->printable_name);
2501 /* Find the existing arch in the list. */
2502 for (list = ®o->arches;
2503 (*list) != NULL && (*list)->gdbarch != new_gdbarch;
2504 list = &(*list)->next);
2505 /* It had better be in the list of architectures. */
2506 gdb_assert ((*list) != NULL && (*list)->gdbarch == new_gdbarch);
2509 (*list) = self->next;
2510 /* Insert SELF at the front. */
2511 self->next = rego->arches;
2512 rego->arches = self;
2517 /* It's a new architecture. */
2519 fprintf_unfiltered (gdb_stdlog, "gdbarch_find_by_info: "
2520 "New architecture %s (%s) selected\n",
2521 host_address_to_string (new_gdbarch),
2522 new_gdbarch->bfd_arch_info->printable_name);
2524 /* Insert the new architecture into the front of the architecture
2525 list (keep the list sorted Most Recently Used). */
2527 struct gdbarch_list *self = XNEW (struct gdbarch_list);
2528 self->next = rego->arches;
2529 self->gdbarch = new_gdbarch;
2530 rego->arches = self;
2533 /* Check that the newly installed architecture is valid. Plug in
2534 any post init values. */
2535 new_gdbarch->dump_tdep = rego->dump_tdep;
2536 verify_gdbarch (new_gdbarch);
2537 new_gdbarch->initialized_p = 1;
2540 gdbarch_dump (new_gdbarch, gdb_stdlog);
2545 /* Make the specified architecture current. */
2548 set_target_gdbarch (struct gdbarch *new_gdbarch)
2550 gdb_assert (new_gdbarch != NULL);
2551 gdb_assert (new_gdbarch->initialized_p);
2552 current_inferior ()->gdbarch = new_gdbarch;
2553 gdb::observers::architecture_changed.notify (new_gdbarch);
2554 registers_changed ();
2557 /* Return the current inferior's arch. */
2560 target_gdbarch (void)
2562 return current_inferior ()->gdbarch;
2565 void _initialize_gdbarch ();
2567 _initialize_gdbarch ()
2569 add_setshow_zuinteger_cmd ("arch", class_maintenance, &gdbarch_debug, _("\\
2570 Set architecture debugging."), _("\\
2571 Show architecture debugging."), _("\\
2572 When non-zero, architecture debugging is enabled."),
2575 &setdebuglist, &showdebuglist);
2581 ..
/move-if-change new-gdbarch.c gdbarch.c