1 /* Disassemble support for GDB.
3 Copyright (C) 2000-2019 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 "gdbsupport/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 (const struct disasm_insn *insn,
195 gdb_disassembly_flags flags)
197 /* parts of the symbolic representation of the address */
203 struct gdbarch *gdbarch = arch ();
206 ui_out_emit_tuple tuple_emitter (m_uiout, NULL);
209 if (insn->number != 0)
211 m_uiout->field_unsigned ("insn-number", insn->number);
212 m_uiout->text ("\t");
215 if ((flags & DISASSEMBLY_SPECULATIVE) != 0)
217 if (insn->is_speculative)
219 m_uiout->field_string ("is-speculative", "?");
221 /* The speculative execution indication overwrites the first
222 character of the PC prefix.
223 We assume a PC prefix length of 3 characters. */
224 if ((flags & DISASSEMBLY_OMIT_PC) == 0)
225 m_uiout->text (pc_prefix (pc) + 1);
229 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
230 m_uiout->text (pc_prefix (pc));
234 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
235 m_uiout->text (pc_prefix (pc));
236 m_uiout->field_core_addr ("address", gdbarch, pc);
238 std::string name, filename;
239 bool omit_fname = ((flags & DISASSEMBLY_OMIT_FNAME) != 0);
240 if (!build_address_symbolic (gdbarch, pc, false, omit_fname, &name,
241 &offset, &filename, &line, &unmapped))
243 /* We don't care now about line, filename and unmapped. But we might in
245 m_uiout->text (" <");
247 m_uiout->field_string ("func-name", name.c_str (),
248 ui_out_style_kind::FUNCTION);
249 /* For negative offsets, avoid displaying them as +-N; the sign of
250 the offset takes the place of the "+" here. */
253 m_uiout->field_signed ("offset", offset);
254 m_uiout->text (">:\t");
257 m_uiout->text (":\t");
261 if (flags & DISASSEMBLY_RAW_INSN)
265 const char *spacer = "";
267 /* Build the opcodes using a temporary stream so we can
268 write them out in a single go for the MI. */
269 m_opcode_stb.clear ();
271 size = m_di.print_insn (pc);
274 for (;pc < end_pc; ++pc)
276 read_code (pc, &data, 1);
277 m_opcode_stb.printf ("%s%02x", spacer, (unsigned) data);
281 m_uiout->field_stream ("opcodes", m_opcode_stb);
282 m_uiout->text ("\t");
285 size = m_di.print_insn (pc);
287 m_uiout->field_stream ("inst", m_insn_stb);
289 m_uiout->text ("\n");
295 dump_insns (struct gdbarch *gdbarch,
296 struct ui_out *uiout, CORE_ADDR low, CORE_ADDR high,
297 int how_many, gdb_disassembly_flags flags, CORE_ADDR *end_pc)
299 struct disasm_insn insn;
300 int num_displayed = 0;
302 memset (&insn, 0, sizeof (insn));
305 gdb_pretty_print_disassembler disasm (gdbarch, uiout);
307 while (insn.addr < high && (how_many < 0 || num_displayed < how_many))
311 size = disasm.pretty_print_insn (&insn, flags);
318 /* Allow user to bail out with ^C. */
325 return num_displayed;
328 /* The idea here is to present a source-O-centric view of a
329 function to the user. This means that things are presented
330 in source order, with (possibly) out of order assembly
331 immediately following.
333 N.B. This view is deprecated. */
336 do_mixed_source_and_assembly_deprecated
337 (struct gdbarch *gdbarch, struct ui_out *uiout,
338 struct symtab *symtab,
339 CORE_ADDR low, CORE_ADDR high,
340 int how_many, gdb_disassembly_flags flags)
344 struct linetable_entry *le;
345 struct deprecated_dis_line_entry *mle;
346 struct symtab_and_line sal;
348 int out_of_order = 0;
350 int num_displayed = 0;
351 print_source_lines_flags psl_flags = 0;
353 gdb_assert (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL);
355 nlines = SYMTAB_LINETABLE (symtab)->nitems;
356 le = SYMTAB_LINETABLE (symtab)->item;
358 if (flags & DISASSEMBLY_FILENAME)
359 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
361 mle = (struct deprecated_dis_line_entry *)
362 alloca (nlines * sizeof (struct deprecated_dis_line_entry));
364 /* Copy linetable entries for this function into our data
365 structure, creating end_pc's and setting out_of_order as
368 /* First, skip all the preceding functions. */
370 for (i = 0; i < nlines - 1 && le[i].pc < low; i++);
372 /* Now, copy all entries before the end of this function. */
374 for (; i < nlines - 1 && le[i].pc < high; i++)
376 if (le[i].line == le[i + 1].line && le[i].pc == le[i + 1].pc)
377 continue; /* Ignore duplicates. */
379 /* Skip any end-of-function markers. */
383 mle[newlines].line = le[i].line;
384 if (le[i].line > le[i + 1].line)
386 mle[newlines].start_pc = le[i].pc;
387 mle[newlines].end_pc = le[i + 1].pc;
391 /* If we're on the last line, and it's part of the function,
392 then we need to get the end pc in a special way. */
394 if (i == nlines - 1 && le[i].pc < high)
396 mle[newlines].line = le[i].line;
397 mle[newlines].start_pc = le[i].pc;
398 sal = find_pc_line (le[i].pc, 0);
399 mle[newlines].end_pc = sal.end;
403 /* Now, sort mle by line #s (and, then by addresses within lines). */
406 qsort (mle, newlines, sizeof (struct deprecated_dis_line_entry),
409 /* Now, for each line entry, emit the specified lines (unless
410 they have been emitted before), followed by the assembly code
413 ui_out_emit_list asm_insns_list (uiout, "asm_insns");
415 gdb::optional<ui_out_emit_tuple> outer_tuple_emitter;
416 gdb::optional<ui_out_emit_list> inner_list_emitter;
418 for (i = 0; i < newlines; i++)
420 /* Print out everything from next_line to the current line. */
421 if (mle[i].line >= next_line)
425 /* Just one line to print. */
426 if (next_line == mle[i].line)
428 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
429 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
433 /* Several source lines w/o asm instructions associated. */
434 for (; next_line < mle[i].line; next_line++)
436 ui_out_emit_tuple tuple_emitter (uiout,
438 print_source_lines (symtab, next_line, next_line + 1,
440 ui_out_emit_list temp_list_emitter (uiout,
443 /* Print the last line and leave list open for
444 asm instructions to be added. */
445 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
446 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
451 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
452 print_source_lines (symtab, mle[i].line, mle[i].line + 1, psl_flags);
455 next_line = mle[i].line + 1;
456 inner_list_emitter.emplace (uiout, "line_asm_insn");
459 num_displayed += dump_insns (gdbarch, uiout,
460 mle[i].start_pc, mle[i].end_pc,
461 how_many, flags, NULL);
463 /* When we've reached the end of the mle array, or we've seen the last
464 assembly range for this source line, close out the list/tuple. */
465 if (i == (newlines - 1) || mle[i + 1].line > mle[i].line)
467 inner_list_emitter.reset ();
468 outer_tuple_emitter.reset ();
471 if (how_many >= 0 && num_displayed >= how_many)
476 /* The idea here is to present a source-O-centric view of a
477 function to the user. This means that things are presented
478 in source order, with (possibly) out of order assembly
479 immediately following. */
482 do_mixed_source_and_assembly (struct gdbarch *gdbarch,
483 struct ui_out *uiout,
484 struct symtab *main_symtab,
485 CORE_ADDR low, CORE_ADDR high,
486 int how_many, gdb_disassembly_flags flags)
488 const struct linetable_entry *le, *first_le;
490 int num_displayed = 0;
491 print_source_lines_flags psl_flags = 0;
493 struct symtab *last_symtab;
496 gdb_assert (main_symtab != NULL && SYMTAB_LINETABLE (main_symtab) != NULL);
498 /* First pass: collect the list of all source files and lines.
499 We do this so that we can only print lines containing code once.
500 We try to print the source text leading up to the next instruction,
501 but if that text is for code that will be disassembled later, then
502 we'll want to defer printing it until later with its associated code. */
504 htab_up dis_line_table (allocate_dis_line_table ());
508 /* The prologue may be empty, but there may still be a line number entry
509 for the opening brace which is distinct from the first line of code.
510 If the prologue has been eliminated find_pc_line may return the source
511 line after the opening brace. We still want to print this opening brace.
512 first_le is used to implement this. */
514 nlines = SYMTAB_LINETABLE (main_symtab)->nitems;
515 le = SYMTAB_LINETABLE (main_symtab)->item;
518 /* Skip all the preceding functions. */
519 for (i = 0; i < nlines && le[i].pc < low; i++)
522 if (i < nlines && le[i].pc < high)
525 /* Add lines for every pc value. */
528 struct symtab_and_line sal;
531 sal = find_pc_line (pc, 0);
532 length = gdb_insn_length (gdbarch, pc);
535 if (sal.symtab != NULL)
536 add_dis_line_entry (dis_line_table.get (), sal.symtab, sal.line);
539 /* Second pass: print the disassembly.
541 Output format, from an MI perspective:
542 The result is a ui_out list, field name "asm_insns", where elements have
543 name "src_and_asm_line".
544 Each element is a tuple of source line specs (field names line, file,
545 fullname), and field "line_asm_insn" which contains the disassembly.
546 Field "line_asm_insn" is a list of tuples: address, func-name, offset,
549 CLI output works on top of this because MI ignores ui_out_text output,
550 which is where we put file name and source line contents output.
554 Handles the outer "asm_insns" list.
556 The tuples for each group of consecutive disassemblies.
558 List of consecutive source lines or disassembled insns. */
560 if (flags & DISASSEMBLY_FILENAME)
561 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
563 ui_out_emit_list asm_insns_emitter (uiout, "asm_insns");
565 gdb::optional<ui_out_emit_tuple> tuple_emitter;
566 gdb::optional<ui_out_emit_list> list_emitter;
574 struct symtab_and_line sal;
576 int start_preceding_line_to_display = 0;
577 int end_preceding_line_to_display = 0;
578 int new_source_line = 0;
580 sal = find_pc_line (pc, 0);
582 if (sal.symtab != last_symtab)
584 /* New source file. */
587 /* If this is the first line of output, check for any preceding
591 && first_le->line < sal.line)
593 start_preceding_line_to_display = first_le->line;
594 end_preceding_line_to_display = sal.line;
599 /* Same source file as last time. */
600 if (sal.symtab != NULL)
602 if (sal.line > last_line + 1 && last_line != 0)
606 /* Several preceding source lines. Print the trailing ones
607 not associated with code that we'll print later. */
608 for (l = sal.line - 1; l > last_line; --l)
610 if (line_has_code_p (dis_line_table.get (),
614 if (l < sal.line - 1)
616 start_preceding_line_to_display = l + 1;
617 end_preceding_line_to_display = sal.line;
620 if (sal.line != last_line)
624 /* Same source line as last time. This can happen, depending
625 on the debug info. */
632 /* Skip the newline if this is the first instruction. */
635 if (tuple_emitter.has_value ())
637 gdb_assert (list_emitter.has_value ());
638 list_emitter.reset ();
639 tuple_emitter.reset ();
641 if (sal.symtab != last_symtab
642 && !(flags & DISASSEMBLY_FILENAME))
644 /* Remember MI ignores ui_out_text.
645 We don't have to do anything here for MI because MI
646 output includes the source specs for each line. */
647 if (sal.symtab != NULL)
649 uiout->text (symtab_to_filename_for_display (sal.symtab));
652 uiout->text ("unknown");
655 if (start_preceding_line_to_display > 0)
657 /* Several source lines w/o asm instructions associated.
658 We need to preserve the structure of the output, so output
659 a bunch of line tuples with no asm entries. */
662 gdb_assert (sal.symtab != NULL);
663 for (l = start_preceding_line_to_display;
664 l < end_preceding_line_to_display;
667 ui_out_emit_tuple line_tuple_emitter (uiout,
669 print_source_lines (sal.symtab, l, l + 1, psl_flags);
670 ui_out_emit_list chain_line_emitter (uiout, "line_asm_insn");
673 tuple_emitter.emplace (uiout, "src_and_asm_line");
674 if (sal.symtab != NULL)
675 print_source_lines (sal.symtab, sal.line, sal.line + 1, psl_flags);
677 uiout->text (_("--- no source info for this pc ---\n"));
678 list_emitter.emplace (uiout, "line_asm_insn");
682 /* Here we're appending instructions to an existing line.
683 By construction the very first insn will have a symtab
684 and follow the new_source_line path above. */
685 gdb_assert (tuple_emitter.has_value ());
686 gdb_assert (list_emitter.has_value ());
690 end_pc = std::min (sal.end, high);
693 num_displayed += dump_insns (gdbarch, uiout, pc, end_pc,
694 how_many, flags, &end_pc);
697 if (how_many >= 0 && num_displayed >= how_many)
700 last_symtab = sal.symtab;
701 last_line = sal.line;
706 do_assembly_only (struct gdbarch *gdbarch, struct ui_out *uiout,
707 CORE_ADDR low, CORE_ADDR high,
708 int how_many, gdb_disassembly_flags flags)
710 ui_out_emit_list list_emitter (uiout, "asm_insns");
712 dump_insns (gdbarch, uiout, low, high, how_many, flags, NULL);
715 /* Initialize the disassemble info struct ready for the specified
718 static int ATTRIBUTE_PRINTF (2, 3)
719 fprintf_disasm (void *stream, const char *format, ...)
723 va_start (args, format);
724 vfprintf_filtered ((struct ui_file *) stream, format, args);
726 /* Something non -ve. */
730 /* Combine implicit and user disassembler options and return them
731 in a newly-created string. */
734 get_all_disassembler_options (struct gdbarch *gdbarch)
736 const char *implicit = gdbarch_disassembler_options_implicit (gdbarch);
737 const char *options = get_disassembler_options (gdbarch);
738 const char *comma = ",";
740 if (implicit == nullptr)
746 if (options == nullptr)
752 return string_printf ("%s%s%s", implicit, comma, options);
755 gdb_disassembler::gdb_disassembler (struct gdbarch *gdbarch,
756 struct ui_file *file,
757 di_read_memory_ftype read_memory_func)
758 : m_gdbarch (gdbarch),
761 init_disassemble_info (&m_di, file, fprintf_disasm);
762 m_di.flavour = bfd_target_unknown_flavour;
763 m_di.memory_error_func = dis_asm_memory_error;
764 m_di.print_address_func = dis_asm_print_address;
765 /* NOTE: cagney/2003-04-28: The original code, from the old Insight
766 disassembler had a local optomization here. By default it would
767 access the executable file, instead of the target memory (there
768 was a growing list of exceptions though). Unfortunately, the
769 heuristic was flawed. Commands like "disassemble &variable"
770 didn't work as they relied on the access going to the target.
771 Further, it has been supperseeded by trust-read-only-sections
772 (although that should be superseeded by target_trust..._p()). */
773 m_di.read_memory_func = read_memory_func;
774 m_di.arch = gdbarch_bfd_arch_info (gdbarch)->arch;
775 m_di.mach = gdbarch_bfd_arch_info (gdbarch)->mach;
776 m_di.endian = gdbarch_byte_order (gdbarch);
777 m_di.endian_code = gdbarch_byte_order_for_code (gdbarch);
778 m_di.application_data = this;
779 m_disassembler_options_holder = get_all_disassembler_options (gdbarch);
780 if (!m_disassembler_options_holder.empty ())
781 m_di.disassembler_options = m_disassembler_options_holder.c_str ();
782 disassemble_init_for_target (&m_di);
786 gdb_disassembler::print_insn (CORE_ADDR memaddr,
787 int *branch_delay_insns)
791 int length = gdbarch_print_insn (arch (), memaddr, &m_di);
794 memory_error (TARGET_XFER_E_IO, m_err_memaddr);
796 if (branch_delay_insns != NULL)
798 if (m_di.insn_info_valid)
799 *branch_delay_insns = m_di.branch_delay_insns;
801 *branch_delay_insns = 0;
807 gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
808 gdb_disassembly_flags flags, int how_many,
809 CORE_ADDR low, CORE_ADDR high)
811 struct symtab *symtab;
814 /* Assume symtab is valid for whole PC range. */
815 symtab = find_pc_line_symtab (low);
817 if (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL)
818 nlines = SYMTAB_LINETABLE (symtab)->nitems;
820 if (!(flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
822 do_assembly_only (gdbarch, uiout, low, high, how_many, flags);
824 else if (flags & DISASSEMBLY_SOURCE)
825 do_mixed_source_and_assembly (gdbarch, uiout, symtab, low, high,
828 else if (flags & DISASSEMBLY_SOURCE_DEPRECATED)
829 do_mixed_source_and_assembly_deprecated (gdbarch, uiout, symtab,
830 low, high, how_many, flags);
832 gdb_flush (gdb_stdout);
835 /* Print the instruction at address MEMADDR in debugged memory,
836 on STREAM. Returns the length of the instruction, in bytes,
837 and, if requested, the number of branch delay slot instructions. */
840 gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
841 struct ui_file *stream, int *branch_delay_insns)
844 gdb_disassembler di (gdbarch, stream);
846 return di.print_insn (memaddr, branch_delay_insns);
849 /* Return the length in bytes of the instruction at address MEMADDR in
853 gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR addr)
855 return gdb_print_insn (gdbarch, addr, &null_stream, NULL);
858 /* fprintf-function for gdb_buffered_insn_length. This function is a
859 nop, we don't want to print anything, we just want to compute the
860 length of the insn. */
862 static int ATTRIBUTE_PRINTF (2, 3)
863 gdb_buffered_insn_length_fprintf (void *stream, const char *format, ...)
868 /* Initialize a struct disassemble_info for gdb_buffered_insn_length.
869 Upon return, *DISASSEMBLER_OPTIONS_HOLDER owns the string pointed
870 to by DI.DISASSEMBLER_OPTIONS. */
873 gdb_buffered_insn_length_init_dis (struct gdbarch *gdbarch,
874 struct disassemble_info *di,
875 const gdb_byte *insn, int max_len,
877 std::string *disassembler_options_holder)
879 init_disassemble_info (di, NULL, gdb_buffered_insn_length_fprintf);
881 /* init_disassemble_info installs buffer_read_memory, etc.
882 so we don't need to do that here.
883 The cast is necessary until disassemble_info is const-ified. */
884 di->buffer = (gdb_byte *) insn;
885 di->buffer_length = max_len;
886 di->buffer_vma = addr;
888 di->arch = gdbarch_bfd_arch_info (gdbarch)->arch;
889 di->mach = gdbarch_bfd_arch_info (gdbarch)->mach;
890 di->endian = gdbarch_byte_order (gdbarch);
891 di->endian_code = gdbarch_byte_order_for_code (gdbarch);
893 *disassembler_options_holder = get_all_disassembler_options (gdbarch);
894 if (!disassembler_options_holder->empty ())
895 di->disassembler_options = disassembler_options_holder->c_str ();
896 disassemble_init_for_target (di);
899 /* Return the length in bytes of INSN. MAX_LEN is the size of the
900 buffer containing INSN. */
903 gdb_buffered_insn_length (struct gdbarch *gdbarch,
904 const gdb_byte *insn, int max_len, CORE_ADDR addr)
906 struct disassemble_info di;
907 std::string disassembler_options_holder;
909 gdb_buffered_insn_length_init_dis (gdbarch, &di, insn, max_len, addr,
910 &disassembler_options_holder);
912 return gdbarch_print_insn (gdbarch, addr, &di);
916 get_disassembler_options (struct gdbarch *gdbarch)
918 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
919 if (disassembler_options == NULL)
921 return *disassembler_options;
925 set_disassembler_options (char *prospective_options)
927 struct gdbarch *gdbarch = get_current_arch ();
928 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
929 const disasm_options_and_args_t *valid_options_and_args;
930 const disasm_options_t *valid_options;
931 char *options = remove_whitespace_and_extra_commas (prospective_options);
934 /* Allow all architectures, even ones that do not support 'set disassembler',
935 to reset their disassembler options to NULL. */
938 if (disassembler_options != NULL)
940 free (*disassembler_options);
941 *disassembler_options = NULL;
946 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
947 if (valid_options_and_args == NULL)
949 fprintf_filtered (gdb_stderr, _("\
950 'set disassembler-options ...' is not supported on this architecture.\n"));
954 valid_options = &valid_options_and_args->options;
956 /* Verify we have valid disassembler options. */
957 FOR_EACH_DISASSEMBLER_OPTION (opt, options)
960 for (i = 0; valid_options->name[i] != NULL; i++)
961 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
963 size_t len = strlen (valid_options->name[i]);
968 if (memcmp (opt, valid_options->name[i], len) != 0)
971 for (j = 0; valid_options->arg[i]->values[j] != NULL; j++)
972 if (disassembler_options_cmp
973 (arg, valid_options->arg[i]->values[j]) == 0)
981 else if (disassembler_options_cmp (opt, valid_options->name[i]) == 0)
983 if (valid_options->name[i] == NULL)
985 fprintf_filtered (gdb_stderr,
986 _("Invalid disassembler option value: '%s'.\n"),
992 free (*disassembler_options);
993 *disassembler_options = xstrdup (options);
997 set_disassembler_options_sfunc (const char *args, int from_tty,
998 struct cmd_list_element *c)
1000 set_disassembler_options (prospective_options);
1004 show_disassembler_options_sfunc (struct ui_file *file, int from_tty,
1005 struct cmd_list_element *c, const char *value)
1007 struct gdbarch *gdbarch = get_current_arch ();
1008 const disasm_options_and_args_t *valid_options_and_args;
1009 const disasm_option_arg_t *valid_args;
1010 const disasm_options_t *valid_options;
1012 const char *options = get_disassembler_options (gdbarch);
1013 if (options == NULL)
1016 fprintf_filtered (file, _("The current disassembler options are '%s'\n\n"),
1019 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
1021 if (valid_options_and_args == NULL)
1023 fputs_filtered (_("There are no disassembler options available "
1024 "for this architecture.\n"),
1029 valid_options = &valid_options_and_args->options;
1031 fprintf_filtered (file, _("\
1032 The following disassembler options are supported for use with the\n\
1033 'set disassembler-options OPTION [,OPTION]...' command:\n"));
1035 if (valid_options->description != NULL)
1037 size_t i, max_len = 0;
1039 fprintf_filtered (file, "\n");
1041 /* Compute the length of the longest option name. */
1042 for (i = 0; valid_options->name[i] != NULL; i++)
1044 size_t len = strlen (valid_options->name[i]);
1046 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1047 len += strlen (valid_options->arg[i]->name);
1052 for (i = 0, max_len++; valid_options->name[i] != NULL; i++)
1054 fprintf_filtered (file, " %s", valid_options->name[i]);
1055 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1056 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1057 if (valid_options->description[i] != NULL)
1059 size_t len = strlen (valid_options->name[i]);
1061 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1062 len += strlen (valid_options->arg[i]->name);
1063 fprintf_filtered (file, "%*c %s", (int) (max_len - len), ' ',
1064 valid_options->description[i]);
1066 fprintf_filtered (file, "\n");
1072 fprintf_filtered (file, " ");
1073 for (i = 0; valid_options->name[i] != NULL; i++)
1075 fprintf_filtered (file, "%s", valid_options->name[i]);
1076 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1077 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1078 if (valid_options->name[i + 1] != NULL)
1079 fprintf_filtered (file, ", ");
1082 fprintf_filtered (file, "\n");
1085 valid_args = valid_options_and_args->args;
1086 if (valid_args != NULL)
1090 for (i = 0; valid_args[i].name != NULL; i++)
1092 fprintf_filtered (file, _("\n\
1093 For the options above, the following values are supported for \"%s\":\n "),
1094 valid_args[i].name);
1095 for (j = 0; valid_args[i].values[j] != NULL; j++)
1097 fprintf_filtered (file, " %s", valid_args[i].values[j]);
1100 fprintf_filtered (file, "\n");
1105 /* A completion function for "set disassembler". */
1108 disassembler_options_completer (struct cmd_list_element *ignore,
1109 completion_tracker &tracker,
1110 const char *text, const char *word)
1112 struct gdbarch *gdbarch = get_current_arch ();
1113 const disasm_options_and_args_t *opts_and_args
1114 = gdbarch_valid_disassembler_options (gdbarch);
1116 if (opts_and_args != NULL)
1118 const disasm_options_t *opts = &opts_and_args->options;
1120 /* Only attempt to complete on the last option text. */
1121 const char *separator = strrchr (text, ',');
1122 if (separator != NULL)
1123 text = separator + 1;
1124 text = skip_spaces (text);
1125 complete_on_enum (tracker, opts->name, text, word);
1130 /* Initialization code. */
1133 _initialize_disasm (void)
1135 struct cmd_list_element *cmd;
1137 /* Add the command that controls the disassembler options. */
1138 cmd = add_setshow_string_noescape_cmd ("disassembler-options", no_class,
1139 &prospective_options, _("\
1140 Set the disassembler options.\n\
1141 Usage: set disassembler-options OPTION [,OPTION]...\n\n\
1142 See: 'show disassembler-options' for valid option values."), _("\
1143 Show the disassembler options."), NULL,
1144 set_disassembler_options_sfunc,
1145 show_disassembler_options_sfunc,
1146 &setlist, &showlist);
1147 set_cmd_completer (cmd, disassembler_options_completer);