1 /* Disassemble support for GDB.
3 Copyright (C) 2000-2018 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
30 #include "safe-ctype.h"
32 #include "common/gdb_optional.h"
35 /* Disassemble functions.
36 FIXME: We should get rid of all the duplicate code in gdb that does
37 the same thing: disassemble_command() and the gdbtk variation. */
39 /* This variable is used to hold the prospective disassembler_options value
40 which is set by the "set disassembler_options" command. */
41 static char *prospective_options = NULL;
43 /* This structure is used to store line number information for the
45 We need a different sort of line table from the normal one cuz we can't
46 depend upon implicit line-end pc's for lines to do the
47 reordering in this function. */
49 struct deprecated_dis_line_entry
56 /* This Structure is used to store line number information.
57 We need a different sort of line table from the normal one cuz we can't
58 depend upon implicit line-end pc's for lines to do the
59 reordering in this function. */
63 struct symtab *symtab;
67 /* Hash function for dis_line_entry. */
70 hash_dis_line_entry (const void *item)
72 const struct dis_line_entry *dle = (const struct dis_line_entry *) item;
74 return htab_hash_pointer (dle->symtab) + dle->line;
77 /* Equal function for dis_line_entry. */
80 eq_dis_line_entry (const void *item_lhs, const void *item_rhs)
82 const struct dis_line_entry *lhs = (const struct dis_line_entry *) item_lhs;
83 const struct dis_line_entry *rhs = (const struct dis_line_entry *) item_rhs;
85 return (lhs->symtab == rhs->symtab
86 && lhs->line == rhs->line);
89 /* Create the table to manage lines for mixed source/disassembly. */
92 allocate_dis_line_table (void)
94 return htab_create_alloc (41,
95 hash_dis_line_entry, eq_dis_line_entry,
96 xfree, xcalloc, xfree);
99 /* Add a new dis_line_entry containing SYMTAB and LINE to TABLE. */
102 add_dis_line_entry (htab_t table, struct symtab *symtab, int line)
105 struct dis_line_entry dle, *dlep;
109 slot = htab_find_slot (table, &dle, INSERT);
112 dlep = XNEW (struct dis_line_entry);
113 dlep->symtab = symtab;
119 /* Return non-zero if SYMTAB, LINE are in TABLE. */
122 line_has_code_p (htab_t table, struct symtab *symtab, int line)
124 struct dis_line_entry dle;
128 return htab_find (table, &dle) != NULL;
131 /* Wrapper of target_read_code. */
134 gdb_disassembler::dis_asm_read_memory (bfd_vma memaddr, gdb_byte *myaddr,
136 struct disassemble_info *info)
138 return target_read_code (memaddr, myaddr, len);
141 /* Wrapper of memory_error. */
144 gdb_disassembler::dis_asm_memory_error (int err, bfd_vma memaddr,
145 struct disassemble_info *info)
147 gdb_disassembler *self
148 = static_cast<gdb_disassembler *>(info->application_data);
150 self->m_err_memaddr = memaddr;
153 /* Wrapper of print_address. */
156 gdb_disassembler::dis_asm_print_address (bfd_vma addr,
157 struct disassemble_info *info)
159 gdb_disassembler *self
160 = static_cast<gdb_disassembler *>(info->application_data);
162 print_address (self->arch (), addr, self->stream ());
166 compare_lines (const void *mle1p, const void *mle2p)
168 struct deprecated_dis_line_entry *mle1, *mle2;
171 mle1 = (struct deprecated_dis_line_entry *) mle1p;
172 mle2 = (struct deprecated_dis_line_entry *) mle2p;
174 /* End of sequence markers have a line number of 0 but don't want to
175 be sorted to the head of the list, instead sort by PC. */
176 if (mle1->line == 0 || mle2->line == 0)
178 val = mle1->start_pc - mle2->start_pc;
180 val = mle1->line - mle2->line;
184 val = mle1->line - mle2->line;
186 val = mle1->start_pc - mle2->start_pc;
194 gdb_pretty_print_disassembler::pretty_print_insn (struct ui_out *uiout,
195 const struct disasm_insn *insn,
196 gdb_disassembly_flags flags)
198 /* parts of the symbolic representation of the address */
204 struct gdbarch *gdbarch = arch ();
207 ui_out_emit_tuple tuple_emitter (uiout, NULL);
210 if (insn->number != 0)
212 uiout->field_fmt ("insn-number", "%u", insn->number);
216 if ((flags & DISASSEMBLY_SPECULATIVE) != 0)
218 if (insn->is_speculative)
220 uiout->field_string ("is-speculative", "?");
222 /* The speculative execution indication overwrites the first
223 character of the PC prefix.
224 We assume a PC prefix length of 3 characters. */
225 if ((flags & DISASSEMBLY_OMIT_PC) == 0)
226 uiout->text (pc_prefix (pc) + 1);
230 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
231 uiout->text (pc_prefix (pc));
235 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
236 uiout->text (pc_prefix (pc));
237 uiout->field_core_addr ("address", gdbarch, pc);
239 std::string name, filename;
240 if (!build_address_symbolic (gdbarch, pc, 0, &name, &offset, &filename,
243 /* We don't care now about line, filename and unmapped. But we might in
246 if ((flags & DISASSEMBLY_OMIT_FNAME) == 0)
247 uiout->field_string ("func-name", name.c_str ());
249 uiout->field_int ("offset", offset);
250 uiout->text (">:\t");
257 if (flags & DISASSEMBLY_RAW_INSN)
261 const char *spacer = "";
263 /* Build the opcodes using a temporary stream so we can
264 write them out in a single go for the MI. */
265 m_opcode_stb.clear ();
267 size = m_di.print_insn (pc);
270 for (;pc < end_pc; ++pc)
272 read_code (pc, &data, 1);
273 m_opcode_stb.printf ("%s%02x", spacer, (unsigned) data);
277 uiout->field_stream ("opcodes", m_opcode_stb);
281 size = m_di.print_insn (pc);
283 uiout->field_stream ("inst", m_insn_stb);
291 dump_insns (struct gdbarch *gdbarch,
292 struct ui_out *uiout, CORE_ADDR low, CORE_ADDR high,
293 int how_many, gdb_disassembly_flags flags, CORE_ADDR *end_pc)
295 struct disasm_insn insn;
296 int num_displayed = 0;
298 memset (&insn, 0, sizeof (insn));
301 gdb_pretty_print_disassembler disasm (gdbarch);
303 while (insn.addr < high && (how_many < 0 || num_displayed < how_many))
307 size = disasm.pretty_print_insn (uiout, &insn, flags);
314 /* Allow user to bail out with ^C. */
321 return num_displayed;
324 /* The idea here is to present a source-O-centric view of a
325 function to the user. This means that things are presented
326 in source order, with (possibly) out of order assembly
327 immediately following.
329 N.B. This view is deprecated. */
332 do_mixed_source_and_assembly_deprecated
333 (struct gdbarch *gdbarch, struct ui_out *uiout,
334 struct symtab *symtab,
335 CORE_ADDR low, CORE_ADDR high,
336 int how_many, gdb_disassembly_flags flags)
340 struct linetable_entry *le;
341 struct deprecated_dis_line_entry *mle;
342 struct symtab_and_line sal;
344 int out_of_order = 0;
346 int num_displayed = 0;
347 print_source_lines_flags psl_flags = 0;
349 gdb_assert (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL);
351 nlines = SYMTAB_LINETABLE (symtab)->nitems;
352 le = SYMTAB_LINETABLE (symtab)->item;
354 if (flags & DISASSEMBLY_FILENAME)
355 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
357 mle = (struct deprecated_dis_line_entry *)
358 alloca (nlines * sizeof (struct deprecated_dis_line_entry));
360 /* Copy linetable entries for this function into our data
361 structure, creating end_pc's and setting out_of_order as
364 /* First, skip all the preceding functions. */
366 for (i = 0; i < nlines - 1 && le[i].pc < low; i++);
368 /* Now, copy all entries before the end of this function. */
370 for (; i < nlines - 1 && le[i].pc < high; i++)
372 if (le[i].line == le[i + 1].line && le[i].pc == le[i + 1].pc)
373 continue; /* Ignore duplicates. */
375 /* Skip any end-of-function markers. */
379 mle[newlines].line = le[i].line;
380 if (le[i].line > le[i + 1].line)
382 mle[newlines].start_pc = le[i].pc;
383 mle[newlines].end_pc = le[i + 1].pc;
387 /* If we're on the last line, and it's part of the function,
388 then we need to get the end pc in a special way. */
390 if (i == nlines - 1 && le[i].pc < high)
392 mle[newlines].line = le[i].line;
393 mle[newlines].start_pc = le[i].pc;
394 sal = find_pc_line (le[i].pc, 0);
395 mle[newlines].end_pc = sal.end;
399 /* Now, sort mle by line #s (and, then by addresses within lines). */
402 qsort (mle, newlines, sizeof (struct deprecated_dis_line_entry),
405 /* Now, for each line entry, emit the specified lines (unless
406 they have been emitted before), followed by the assembly code
409 ui_out_emit_list asm_insns_list (uiout, "asm_insns");
411 gdb::optional<ui_out_emit_tuple> outer_tuple_emitter;
412 gdb::optional<ui_out_emit_list> inner_list_emitter;
414 for (i = 0; i < newlines; i++)
416 /* Print out everything from next_line to the current line. */
417 if (mle[i].line >= next_line)
421 /* Just one line to print. */
422 if (next_line == mle[i].line)
424 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
425 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
429 /* Several source lines w/o asm instructions associated. */
430 for (; next_line < mle[i].line; next_line++)
432 ui_out_emit_tuple tuple_emitter (uiout,
434 print_source_lines (symtab, next_line, next_line + 1,
436 ui_out_emit_list inner_list_emitter (uiout,
439 /* Print the last line and leave list open for
440 asm instructions to be added. */
441 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
442 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
447 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
448 print_source_lines (symtab, mle[i].line, mle[i].line + 1, psl_flags);
451 next_line = mle[i].line + 1;
452 inner_list_emitter.emplace (uiout, "line_asm_insn");
455 num_displayed += dump_insns (gdbarch, uiout,
456 mle[i].start_pc, mle[i].end_pc,
457 how_many, flags, NULL);
459 /* When we've reached the end of the mle array, or we've seen the last
460 assembly range for this source line, close out the list/tuple. */
461 if (i == (newlines - 1) || mle[i + 1].line > mle[i].line)
463 inner_list_emitter.reset ();
464 outer_tuple_emitter.reset ();
467 if (how_many >= 0 && num_displayed >= how_many)
472 /* The idea here is to present a source-O-centric view of a
473 function to the user. This means that things are presented
474 in source order, with (possibly) out of order assembly
475 immediately following. */
478 do_mixed_source_and_assembly (struct gdbarch *gdbarch,
479 struct ui_out *uiout,
480 struct symtab *main_symtab,
481 CORE_ADDR low, CORE_ADDR high,
482 int how_many, gdb_disassembly_flags flags)
484 const struct linetable_entry *le, *first_le;
486 int num_displayed = 0;
487 print_source_lines_flags psl_flags = 0;
489 struct symtab *last_symtab;
492 gdb_assert (main_symtab != NULL && SYMTAB_LINETABLE (main_symtab) != NULL);
494 /* First pass: collect the list of all source files and lines.
495 We do this so that we can only print lines containing code once.
496 We try to print the source text leading up to the next instruction,
497 but if that text is for code that will be disassembled later, then
498 we'll want to defer printing it until later with its associated code. */
500 htab_up dis_line_table (allocate_dis_line_table ());
504 /* The prologue may be empty, but there may still be a line number entry
505 for the opening brace which is distinct from the first line of code.
506 If the prologue has been eliminated find_pc_line may return the source
507 line after the opening brace. We still want to print this opening brace.
508 first_le is used to implement this. */
510 nlines = SYMTAB_LINETABLE (main_symtab)->nitems;
511 le = SYMTAB_LINETABLE (main_symtab)->item;
514 /* Skip all the preceding functions. */
515 for (i = 0; i < nlines && le[i].pc < low; i++)
518 if (i < nlines && le[i].pc < high)
521 /* Add lines for every pc value. */
524 struct symtab_and_line sal;
527 sal = find_pc_line (pc, 0);
528 length = gdb_insn_length (gdbarch, pc);
531 if (sal.symtab != NULL)
532 add_dis_line_entry (dis_line_table.get (), sal.symtab, sal.line);
535 /* Second pass: print the disassembly.
537 Output format, from an MI perspective:
538 The result is a ui_out list, field name "asm_insns", where elements have
539 name "src_and_asm_line".
540 Each element is a tuple of source line specs (field names line, file,
541 fullname), and field "line_asm_insn" which contains the disassembly.
542 Field "line_asm_insn" is a list of tuples: address, func-name, offset,
545 CLI output works on top of this because MI ignores ui_out_text output,
546 which is where we put file name and source line contents output.
550 Handles the outer "asm_insns" list.
552 The tuples for each group of consecutive disassemblies.
554 List of consecutive source lines or disassembled insns. */
556 if (flags & DISASSEMBLY_FILENAME)
557 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
559 ui_out_emit_list asm_insns_emitter (uiout, "asm_insns");
561 gdb::optional<ui_out_emit_tuple> tuple_emitter;
562 gdb::optional<ui_out_emit_list> list_emitter;
570 struct symtab_and_line sal;
572 int start_preceding_line_to_display = 0;
573 int end_preceding_line_to_display = 0;
574 int new_source_line = 0;
576 sal = find_pc_line (pc, 0);
578 if (sal.symtab != last_symtab)
580 /* New source file. */
583 /* If this is the first line of output, check for any preceding
587 && first_le->line < sal.line)
589 start_preceding_line_to_display = first_le->line;
590 end_preceding_line_to_display = sal.line;
595 /* Same source file as last time. */
596 if (sal.symtab != NULL)
598 if (sal.line > last_line + 1 && last_line != 0)
602 /* Several preceding source lines. Print the trailing ones
603 not associated with code that we'll print later. */
604 for (l = sal.line - 1; l > last_line; --l)
606 if (line_has_code_p (dis_line_table.get (),
610 if (l < sal.line - 1)
612 start_preceding_line_to_display = l + 1;
613 end_preceding_line_to_display = sal.line;
616 if (sal.line != last_line)
620 /* Same source line as last time. This can happen, depending
621 on the debug info. */
628 /* Skip the newline if this is the first instruction. */
631 if (tuple_emitter.has_value ())
633 gdb_assert (list_emitter.has_value ());
634 list_emitter.reset ();
635 tuple_emitter.reset ();
637 if (sal.symtab != last_symtab
638 && !(flags & DISASSEMBLY_FILENAME))
640 /* Remember MI ignores ui_out_text.
641 We don't have to do anything here for MI because MI
642 output includes the source specs for each line. */
643 if (sal.symtab != NULL)
645 uiout->text (symtab_to_filename_for_display (sal.symtab));
648 uiout->text ("unknown");
651 if (start_preceding_line_to_display > 0)
653 /* Several source lines w/o asm instructions associated.
654 We need to preserve the structure of the output, so output
655 a bunch of line tuples with no asm entries. */
658 gdb_assert (sal.symtab != NULL);
659 for (l = start_preceding_line_to_display;
660 l < end_preceding_line_to_display;
663 ui_out_emit_tuple tuple_emitter (uiout, "src_and_asm_line");
664 print_source_lines (sal.symtab, l, l + 1, psl_flags);
665 ui_out_emit_list chain_line_emitter (uiout, "line_asm_insn");
668 tuple_emitter.emplace (uiout, "src_and_asm_line");
669 if (sal.symtab != NULL)
670 print_source_lines (sal.symtab, sal.line, sal.line + 1, psl_flags);
672 uiout->text (_("--- no source info for this pc ---\n"));
673 list_emitter.emplace (uiout, "line_asm_insn");
677 /* Here we're appending instructions to an existing line.
678 By construction the very first insn will have a symtab
679 and follow the new_source_line path above. */
680 gdb_assert (tuple_emitter.has_value ());
681 gdb_assert (list_emitter.has_value ());
685 end_pc = std::min (sal.end, high);
688 num_displayed += dump_insns (gdbarch, uiout, pc, end_pc,
689 how_many, flags, &end_pc);
692 if (how_many >= 0 && num_displayed >= how_many)
695 last_symtab = sal.symtab;
696 last_line = sal.line;
701 do_assembly_only (struct gdbarch *gdbarch, struct ui_out *uiout,
702 CORE_ADDR low, CORE_ADDR high,
703 int how_many, gdb_disassembly_flags flags)
705 ui_out_emit_list list_emitter (uiout, "asm_insns");
707 dump_insns (gdbarch, uiout, low, high, how_many, flags, NULL);
710 /* Initialize the disassemble info struct ready for the specified
713 static int ATTRIBUTE_PRINTF (2, 3)
714 fprintf_disasm (void *stream, const char *format, ...)
718 va_start (args, format);
719 vfprintf_filtered ((struct ui_file *) stream, format, args);
721 /* Something non -ve. */
725 /* Combine implicit and user disassembler options and return them
726 in a newly-created string. */
729 get_all_disassembler_options (struct gdbarch *gdbarch)
731 const char *implicit = gdbarch_disassembler_options_implicit (gdbarch);
732 const char *options = get_disassembler_options (gdbarch);
733 const char *comma = ",";
735 if (implicit == nullptr)
741 if (options == nullptr)
747 return string_printf ("%s%s%s", implicit, comma, options);
750 gdb_disassembler::gdb_disassembler (struct gdbarch *gdbarch,
751 struct ui_file *file,
752 di_read_memory_ftype read_memory_func)
753 : m_gdbarch (gdbarch),
756 init_disassemble_info (&m_di, file, fprintf_disasm);
757 m_di.flavour = bfd_target_unknown_flavour;
758 m_di.memory_error_func = dis_asm_memory_error;
759 m_di.print_address_func = dis_asm_print_address;
760 /* NOTE: cagney/2003-04-28: The original code, from the old Insight
761 disassembler had a local optomization here. By default it would
762 access the executable file, instead of the target memory (there
763 was a growing list of exceptions though). Unfortunately, the
764 heuristic was flawed. Commands like "disassemble &variable"
765 didn't work as they relied on the access going to the target.
766 Further, it has been supperseeded by trust-read-only-sections
767 (although that should be superseeded by target_trust..._p()). */
768 m_di.read_memory_func = read_memory_func;
769 m_di.arch = gdbarch_bfd_arch_info (gdbarch)->arch;
770 m_di.mach = gdbarch_bfd_arch_info (gdbarch)->mach;
771 m_di.endian = gdbarch_byte_order (gdbarch);
772 m_di.endian_code = gdbarch_byte_order_for_code (gdbarch);
773 m_di.application_data = this;
774 m_disassembler_options_holder = get_all_disassembler_options (gdbarch);
775 if (!m_disassembler_options_holder.empty ())
776 m_di.disassembler_options = m_disassembler_options_holder.c_str ();
777 disassemble_init_for_target (&m_di);
781 gdb_disassembler::print_insn (CORE_ADDR memaddr,
782 int *branch_delay_insns)
786 int length = gdbarch_print_insn (arch (), memaddr, &m_di);
789 memory_error (TARGET_XFER_E_IO, m_err_memaddr);
791 if (branch_delay_insns != NULL)
793 if (m_di.insn_info_valid)
794 *branch_delay_insns = m_di.branch_delay_insns;
796 *branch_delay_insns = 0;
802 gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
803 gdb_disassembly_flags flags, int how_many,
804 CORE_ADDR low, CORE_ADDR high)
806 struct symtab *symtab;
809 /* Assume symtab is valid for whole PC range. */
810 symtab = find_pc_line_symtab (low);
812 if (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL)
813 nlines = SYMTAB_LINETABLE (symtab)->nitems;
815 if (!(flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
817 do_assembly_only (gdbarch, uiout, low, high, how_many, flags);
819 else if (flags & DISASSEMBLY_SOURCE)
820 do_mixed_source_and_assembly (gdbarch, uiout, symtab, low, high,
823 else if (flags & DISASSEMBLY_SOURCE_DEPRECATED)
824 do_mixed_source_and_assembly_deprecated (gdbarch, uiout, symtab,
825 low, high, how_many, flags);
827 gdb_flush (gdb_stdout);
830 /* Print the instruction at address MEMADDR in debugged memory,
831 on STREAM. Returns the length of the instruction, in bytes,
832 and, if requested, the number of branch delay slot instructions. */
835 gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
836 struct ui_file *stream, int *branch_delay_insns)
839 gdb_disassembler di (gdbarch, stream);
841 return di.print_insn (memaddr, branch_delay_insns);
844 /* Return the length in bytes of the instruction at address MEMADDR in
848 gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR addr)
850 return gdb_print_insn (gdbarch, addr, &null_stream, NULL);
853 /* fprintf-function for gdb_buffered_insn_length. This function is a
854 nop, we don't want to print anything, we just want to compute the
855 length of the insn. */
857 static int ATTRIBUTE_PRINTF (2, 3)
858 gdb_buffered_insn_length_fprintf (void *stream, const char *format, ...)
863 /* Initialize a struct disassemble_info for gdb_buffered_insn_length.
864 Upon return, *DISASSEMBLER_OPTIONS_HOLDER owns the string pointed
865 to by DI.DISASSEMBLER_OPTIONS. */
868 gdb_buffered_insn_length_init_dis (struct gdbarch *gdbarch,
869 struct disassemble_info *di,
870 const gdb_byte *insn, int max_len,
872 std::string *disassembler_options_holder)
874 init_disassemble_info (di, NULL, gdb_buffered_insn_length_fprintf);
876 /* init_disassemble_info installs buffer_read_memory, etc.
877 so we don't need to do that here.
878 The cast is necessary until disassemble_info is const-ified. */
879 di->buffer = (gdb_byte *) insn;
880 di->buffer_length = max_len;
881 di->buffer_vma = addr;
883 di->arch = gdbarch_bfd_arch_info (gdbarch)->arch;
884 di->mach = gdbarch_bfd_arch_info (gdbarch)->mach;
885 di->endian = gdbarch_byte_order (gdbarch);
886 di->endian_code = gdbarch_byte_order_for_code (gdbarch);
888 *disassembler_options_holder = get_all_disassembler_options (gdbarch);
889 if (!disassembler_options_holder->empty ())
890 di->disassembler_options = disassembler_options_holder->c_str ();
891 disassemble_init_for_target (di);
894 /* Return the length in bytes of INSN. MAX_LEN is the size of the
895 buffer containing INSN. */
898 gdb_buffered_insn_length (struct gdbarch *gdbarch,
899 const gdb_byte *insn, int max_len, CORE_ADDR addr)
901 struct disassemble_info di;
902 std::string disassembler_options_holder;
904 gdb_buffered_insn_length_init_dis (gdbarch, &di, insn, max_len, addr,
905 &disassembler_options_holder);
907 return gdbarch_print_insn (gdbarch, addr, &di);
911 get_disassembler_options (struct gdbarch *gdbarch)
913 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
914 if (disassembler_options == NULL)
916 return *disassembler_options;
920 set_disassembler_options (char *prospective_options)
922 struct gdbarch *gdbarch = get_current_arch ();
923 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
924 const disasm_options_and_args_t *valid_options_and_args;
925 const disasm_options_t *valid_options;
926 char *options = remove_whitespace_and_extra_commas (prospective_options);
929 /* Allow all architectures, even ones that do not support 'set disassembler',
930 to reset their disassembler options to NULL. */
933 if (disassembler_options != NULL)
935 free (*disassembler_options);
936 *disassembler_options = NULL;
941 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
942 if (valid_options_and_args == NULL)
944 fprintf_filtered (gdb_stdlog, _("\
945 'set disassembler-options ...' is not supported on this architecture.\n"));
949 valid_options = &valid_options_and_args->options;
951 /* Verify we have valid disassembler options. */
952 FOR_EACH_DISASSEMBLER_OPTION (opt, options)
955 for (i = 0; valid_options->name[i] != NULL; i++)
956 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
958 size_t len = strlen (valid_options->name[i]);
963 if (memcmp (opt, valid_options->name[i], len) != 0)
966 for (j = 0; valid_options->arg[i]->values[j] != NULL; j++)
967 if (disassembler_options_cmp
968 (arg, valid_options->arg[i]->values[j]) == 0)
976 else if (disassembler_options_cmp (opt, valid_options->name[i]) == 0)
978 if (valid_options->name[i] == NULL)
980 fprintf_filtered (gdb_stdlog,
981 _("Invalid disassembler option value: '%s'.\n"),
987 free (*disassembler_options);
988 *disassembler_options = xstrdup (options);
992 set_disassembler_options_sfunc (const char *args, int from_tty,
993 struct cmd_list_element *c)
995 set_disassembler_options (prospective_options);
999 show_disassembler_options_sfunc (struct ui_file *file, int from_tty,
1000 struct cmd_list_element *c, const char *value)
1002 struct gdbarch *gdbarch = get_current_arch ();
1003 const disasm_options_and_args_t *valid_options_and_args;
1004 const disasm_option_arg_t *valid_args;
1005 const disasm_options_t *valid_options;
1007 const char *options = get_disassembler_options (gdbarch);
1008 if (options == NULL)
1011 fprintf_filtered (file, _("The current disassembler options are '%s'\n"),
1014 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
1016 if (valid_options_and_args == NULL)
1019 valid_options = &valid_options_and_args->options;
1021 fprintf_filtered (file, _("\n\
1022 The following disassembler options are supported for use with the\n\
1023 'set disassembler-options <option>[,<option>...]' command:\n"));
1025 if (valid_options->description != NULL)
1027 size_t i, max_len = 0;
1029 fprintf_filtered (file, "\n");
1031 /* Compute the length of the longest option name. */
1032 for (i = 0; valid_options->name[i] != NULL; i++)
1034 size_t len = strlen (valid_options->name[i]);
1036 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1037 len += strlen (valid_options->arg[i]->name);
1042 for (i = 0, max_len++; valid_options->name[i] != NULL; i++)
1044 fprintf_filtered (file, " %s", valid_options->name[i]);
1045 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1046 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1047 if (valid_options->description[i] != NULL)
1049 size_t len = strlen (valid_options->name[i]);
1051 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1052 len += strlen (valid_options->arg[i]->name);
1053 fprintf_filtered (file, "%*c %s", (int) (max_len - len), ' ',
1054 valid_options->description[i]);
1056 fprintf_filtered (file, "\n");
1062 fprintf_filtered (file, " ");
1063 for (i = 0; valid_options->name[i] != NULL; i++)
1065 fprintf_filtered (file, "%s", valid_options->name[i]);
1066 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1067 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1068 if (valid_options->name[i + 1] != NULL)
1069 fprintf_filtered (file, ", ");
1072 fprintf_filtered (file, "\n");
1075 valid_args = valid_options_and_args->args;
1076 if (valid_args != NULL)
1080 for (i = 0; valid_args[i].name != NULL; i++)
1082 fprintf_filtered (file, _("\n\
1083 For the options above, the following values are supported for \"%s\":\n "),
1084 valid_args[i].name);
1085 for (j = 0; valid_args[i].values[j] != NULL; j++)
1087 fprintf_filtered (file, " %s", valid_args[i].values[j]);
1090 fprintf_filtered (file, "\n");
1095 /* A completion function for "set disassembler". */
1098 disassembler_options_completer (struct cmd_list_element *ignore,
1099 completion_tracker &tracker,
1100 const char *text, const char *word)
1102 struct gdbarch *gdbarch = get_current_arch ();
1103 const disasm_options_and_args_t *opts_and_args
1104 = gdbarch_valid_disassembler_options (gdbarch);
1106 if (opts_and_args != NULL)
1108 const disasm_options_t *opts = &opts_and_args->options;
1110 /* Only attempt to complete on the last option text. */
1111 const char *separator = strrchr (text, ',');
1112 if (separator != NULL)
1113 text = separator + 1;
1114 text = skip_spaces (text);
1115 complete_on_enum (tracker, opts->name, text, word);
1120 /* Initialization code. */
1123 _initialize_disasm (void)
1125 struct cmd_list_element *cmd;
1127 /* Add the command that controls the disassembler options. */
1128 cmd = add_setshow_string_noescape_cmd ("disassembler-options", no_class,
1129 &prospective_options, _("\
1130 Set the disassembler options.\n\
1131 Usage: set disassembler-options OPTION [,OPTION]...\n\n\
1132 See: 'show disassembler-options' for valid option values.\n"), _("\
1133 Show the disassembler options."), NULL,
1134 set_disassembler_options_sfunc,
1135 show_disassembler_options_sfunc,
1136 &setlist, &showlist);
1137 set_cmd_completer (cmd, disassembler_options_completer);