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 (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_unsigned ("insn-number", 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 bool omit_fname = ((flags & DISASSEMBLY_OMIT_FNAME) != 0);
241 if (!build_address_symbolic (gdbarch, pc, false, omit_fname, &name,
242 &offset, &filename, &line, &unmapped))
244 /* We don't care now about line, filename and unmapped. But we might in
248 uiout->field_string ("func-name", name.c_str (),
249 ui_out_style_kind::FUNCTION);
250 /* For negative offsets, avoid displaying them as +-N; the sign of
251 the offset takes the place of the "+" here. */
254 uiout->field_signed ("offset", offset);
255 uiout->text (">:\t");
262 if (flags & DISASSEMBLY_RAW_INSN)
266 const char *spacer = "";
268 /* Build the opcodes using a temporary stream so we can
269 write them out in a single go for the MI. */
270 m_opcode_stb.clear ();
272 size = m_di.print_insn (pc);
275 for (;pc < end_pc; ++pc)
277 read_code (pc, &data, 1);
278 m_opcode_stb.printf ("%s%02x", spacer, (unsigned) data);
282 uiout->field_stream ("opcodes", m_opcode_stb);
286 size = m_di.print_insn (pc);
288 uiout->field_stream ("inst", m_insn_stb);
296 dump_insns (struct gdbarch *gdbarch,
297 struct ui_out *uiout, CORE_ADDR low, CORE_ADDR high,
298 int how_many, gdb_disassembly_flags flags, CORE_ADDR *end_pc)
300 struct disasm_insn insn;
301 int num_displayed = 0;
303 memset (&insn, 0, sizeof (insn));
306 gdb_pretty_print_disassembler disasm (gdbarch);
308 while (insn.addr < high && (how_many < 0 || num_displayed < how_many))
312 size = disasm.pretty_print_insn (uiout, &insn, flags);
319 /* Allow user to bail out with ^C. */
326 return num_displayed;
329 /* The idea here is to present a source-O-centric view of a
330 function to the user. This means that things are presented
331 in source order, with (possibly) out of order assembly
332 immediately following.
334 N.B. This view is deprecated. */
337 do_mixed_source_and_assembly_deprecated
338 (struct gdbarch *gdbarch, struct ui_out *uiout,
339 struct symtab *symtab,
340 CORE_ADDR low, CORE_ADDR high,
341 int how_many, gdb_disassembly_flags flags)
345 struct linetable_entry *le;
346 struct deprecated_dis_line_entry *mle;
347 struct symtab_and_line sal;
349 int out_of_order = 0;
351 int num_displayed = 0;
352 print_source_lines_flags psl_flags = 0;
354 gdb_assert (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL);
356 nlines = SYMTAB_LINETABLE (symtab)->nitems;
357 le = SYMTAB_LINETABLE (symtab)->item;
359 if (flags & DISASSEMBLY_FILENAME)
360 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
362 mle = (struct deprecated_dis_line_entry *)
363 alloca (nlines * sizeof (struct deprecated_dis_line_entry));
365 /* Copy linetable entries for this function into our data
366 structure, creating end_pc's and setting out_of_order as
369 /* First, skip all the preceding functions. */
371 for (i = 0; i < nlines - 1 && le[i].pc < low; i++);
373 /* Now, copy all entries before the end of this function. */
375 for (; i < nlines - 1 && le[i].pc < high; i++)
377 if (le[i].line == le[i + 1].line && le[i].pc == le[i + 1].pc)
378 continue; /* Ignore duplicates. */
380 /* Skip any end-of-function markers. */
384 mle[newlines].line = le[i].line;
385 if (le[i].line > le[i + 1].line)
387 mle[newlines].start_pc = le[i].pc;
388 mle[newlines].end_pc = le[i + 1].pc;
392 /* If we're on the last line, and it's part of the function,
393 then we need to get the end pc in a special way. */
395 if (i == nlines - 1 && le[i].pc < high)
397 mle[newlines].line = le[i].line;
398 mle[newlines].start_pc = le[i].pc;
399 sal = find_pc_line (le[i].pc, 0);
400 mle[newlines].end_pc = sal.end;
404 /* Now, sort mle by line #s (and, then by addresses within lines). */
407 qsort (mle, newlines, sizeof (struct deprecated_dis_line_entry),
410 /* Now, for each line entry, emit the specified lines (unless
411 they have been emitted before), followed by the assembly code
414 ui_out_emit_list asm_insns_list (uiout, "asm_insns");
416 gdb::optional<ui_out_emit_tuple> outer_tuple_emitter;
417 gdb::optional<ui_out_emit_list> inner_list_emitter;
419 for (i = 0; i < newlines; i++)
421 /* Print out everything from next_line to the current line. */
422 if (mle[i].line >= next_line)
426 /* Just one line to print. */
427 if (next_line == mle[i].line)
429 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
430 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
434 /* Several source lines w/o asm instructions associated. */
435 for (; next_line < mle[i].line; next_line++)
437 ui_out_emit_tuple tuple_emitter (uiout,
439 print_source_lines (symtab, next_line, next_line + 1,
441 ui_out_emit_list temp_list_emitter (uiout,
444 /* Print the last line and leave list open for
445 asm instructions to be added. */
446 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
447 print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags);
452 outer_tuple_emitter.emplace (uiout, "src_and_asm_line");
453 print_source_lines (symtab, mle[i].line, mle[i].line + 1, psl_flags);
456 next_line = mle[i].line + 1;
457 inner_list_emitter.emplace (uiout, "line_asm_insn");
460 num_displayed += dump_insns (gdbarch, uiout,
461 mle[i].start_pc, mle[i].end_pc,
462 how_many, flags, NULL);
464 /* When we've reached the end of the mle array, or we've seen the last
465 assembly range for this source line, close out the list/tuple. */
466 if (i == (newlines - 1) || mle[i + 1].line > mle[i].line)
468 inner_list_emitter.reset ();
469 outer_tuple_emitter.reset ();
472 if (how_many >= 0 && num_displayed >= how_many)
477 /* The idea here is to present a source-O-centric view of a
478 function to the user. This means that things are presented
479 in source order, with (possibly) out of order assembly
480 immediately following. */
483 do_mixed_source_and_assembly (struct gdbarch *gdbarch,
484 struct ui_out *uiout,
485 struct symtab *main_symtab,
486 CORE_ADDR low, CORE_ADDR high,
487 int how_many, gdb_disassembly_flags flags)
489 const struct linetable_entry *le, *first_le;
491 int num_displayed = 0;
492 print_source_lines_flags psl_flags = 0;
494 struct symtab *last_symtab;
497 gdb_assert (main_symtab != NULL && SYMTAB_LINETABLE (main_symtab) != NULL);
499 /* First pass: collect the list of all source files and lines.
500 We do this so that we can only print lines containing code once.
501 We try to print the source text leading up to the next instruction,
502 but if that text is for code that will be disassembled later, then
503 we'll want to defer printing it until later with its associated code. */
505 htab_up dis_line_table (allocate_dis_line_table ());
509 /* The prologue may be empty, but there may still be a line number entry
510 for the opening brace which is distinct from the first line of code.
511 If the prologue has been eliminated find_pc_line may return the source
512 line after the opening brace. We still want to print this opening brace.
513 first_le is used to implement this. */
515 nlines = SYMTAB_LINETABLE (main_symtab)->nitems;
516 le = SYMTAB_LINETABLE (main_symtab)->item;
519 /* Skip all the preceding functions. */
520 for (i = 0; i < nlines && le[i].pc < low; i++)
523 if (i < nlines && le[i].pc < high)
526 /* Add lines for every pc value. */
529 struct symtab_and_line sal;
532 sal = find_pc_line (pc, 0);
533 length = gdb_insn_length (gdbarch, pc);
536 if (sal.symtab != NULL)
537 add_dis_line_entry (dis_line_table.get (), sal.symtab, sal.line);
540 /* Second pass: print the disassembly.
542 Output format, from an MI perspective:
543 The result is a ui_out list, field name "asm_insns", where elements have
544 name "src_and_asm_line".
545 Each element is a tuple of source line specs (field names line, file,
546 fullname), and field "line_asm_insn" which contains the disassembly.
547 Field "line_asm_insn" is a list of tuples: address, func-name, offset,
550 CLI output works on top of this because MI ignores ui_out_text output,
551 which is where we put file name and source line contents output.
555 Handles the outer "asm_insns" list.
557 The tuples for each group of consecutive disassemblies.
559 List of consecutive source lines or disassembled insns. */
561 if (flags & DISASSEMBLY_FILENAME)
562 psl_flags |= PRINT_SOURCE_LINES_FILENAME;
564 ui_out_emit_list asm_insns_emitter (uiout, "asm_insns");
566 gdb::optional<ui_out_emit_tuple> tuple_emitter;
567 gdb::optional<ui_out_emit_list> list_emitter;
575 struct symtab_and_line sal;
577 int start_preceding_line_to_display = 0;
578 int end_preceding_line_to_display = 0;
579 int new_source_line = 0;
581 sal = find_pc_line (pc, 0);
583 if (sal.symtab != last_symtab)
585 /* New source file. */
588 /* If this is the first line of output, check for any preceding
592 && first_le->line < sal.line)
594 start_preceding_line_to_display = first_le->line;
595 end_preceding_line_to_display = sal.line;
600 /* Same source file as last time. */
601 if (sal.symtab != NULL)
603 if (sal.line > last_line + 1 && last_line != 0)
607 /* Several preceding source lines. Print the trailing ones
608 not associated with code that we'll print later. */
609 for (l = sal.line - 1; l > last_line; --l)
611 if (line_has_code_p (dis_line_table.get (),
615 if (l < sal.line - 1)
617 start_preceding_line_to_display = l + 1;
618 end_preceding_line_to_display = sal.line;
621 if (sal.line != last_line)
625 /* Same source line as last time. This can happen, depending
626 on the debug info. */
633 /* Skip the newline if this is the first instruction. */
636 if (tuple_emitter.has_value ())
638 gdb_assert (list_emitter.has_value ());
639 list_emitter.reset ();
640 tuple_emitter.reset ();
642 if (sal.symtab != last_symtab
643 && !(flags & DISASSEMBLY_FILENAME))
645 /* Remember MI ignores ui_out_text.
646 We don't have to do anything here for MI because MI
647 output includes the source specs for each line. */
648 if (sal.symtab != NULL)
650 uiout->text (symtab_to_filename_for_display (sal.symtab));
653 uiout->text ("unknown");
656 if (start_preceding_line_to_display > 0)
658 /* Several source lines w/o asm instructions associated.
659 We need to preserve the structure of the output, so output
660 a bunch of line tuples with no asm entries. */
663 gdb_assert (sal.symtab != NULL);
664 for (l = start_preceding_line_to_display;
665 l < end_preceding_line_to_display;
668 ui_out_emit_tuple line_tuple_emitter (uiout,
670 print_source_lines (sal.symtab, l, l + 1, psl_flags);
671 ui_out_emit_list chain_line_emitter (uiout, "line_asm_insn");
674 tuple_emitter.emplace (uiout, "src_and_asm_line");
675 if (sal.symtab != NULL)
676 print_source_lines (sal.symtab, sal.line, sal.line + 1, psl_flags);
678 uiout->text (_("--- no source info for this pc ---\n"));
679 list_emitter.emplace (uiout, "line_asm_insn");
683 /* Here we're appending instructions to an existing line.
684 By construction the very first insn will have a symtab
685 and follow the new_source_line path above. */
686 gdb_assert (tuple_emitter.has_value ());
687 gdb_assert (list_emitter.has_value ());
691 end_pc = std::min (sal.end, high);
694 num_displayed += dump_insns (gdbarch, uiout, pc, end_pc,
695 how_many, flags, &end_pc);
698 if (how_many >= 0 && num_displayed >= how_many)
701 last_symtab = sal.symtab;
702 last_line = sal.line;
707 do_assembly_only (struct gdbarch *gdbarch, struct ui_out *uiout,
708 CORE_ADDR low, CORE_ADDR high,
709 int how_many, gdb_disassembly_flags flags)
711 ui_out_emit_list list_emitter (uiout, "asm_insns");
713 dump_insns (gdbarch, uiout, low, high, how_many, flags, NULL);
716 /* Initialize the disassemble info struct ready for the specified
719 static int ATTRIBUTE_PRINTF (2, 3)
720 fprintf_disasm (void *stream, const char *format, ...)
724 va_start (args, format);
725 vfprintf_filtered ((struct ui_file *) stream, format, args);
727 /* Something non -ve. */
731 /* Combine implicit and user disassembler options and return them
732 in a newly-created string. */
735 get_all_disassembler_options (struct gdbarch *gdbarch)
737 const char *implicit = gdbarch_disassembler_options_implicit (gdbarch);
738 const char *options = get_disassembler_options (gdbarch);
739 const char *comma = ",";
741 if (implicit == nullptr)
747 if (options == nullptr)
753 return string_printf ("%s%s%s", implicit, comma, options);
756 gdb_disassembler::gdb_disassembler (struct gdbarch *gdbarch,
757 struct ui_file *file,
758 di_read_memory_ftype read_memory_func)
759 : m_gdbarch (gdbarch),
762 init_disassemble_info (&m_di, file, fprintf_disasm);
763 m_di.flavour = bfd_target_unknown_flavour;
764 m_di.memory_error_func = dis_asm_memory_error;
765 m_di.print_address_func = dis_asm_print_address;
766 /* NOTE: cagney/2003-04-28: The original code, from the old Insight
767 disassembler had a local optomization here. By default it would
768 access the executable file, instead of the target memory (there
769 was a growing list of exceptions though). Unfortunately, the
770 heuristic was flawed. Commands like "disassemble &variable"
771 didn't work as they relied on the access going to the target.
772 Further, it has been supperseeded by trust-read-only-sections
773 (although that should be superseeded by target_trust..._p()). */
774 m_di.read_memory_func = read_memory_func;
775 m_di.arch = gdbarch_bfd_arch_info (gdbarch)->arch;
776 m_di.mach = gdbarch_bfd_arch_info (gdbarch)->mach;
777 m_di.endian = gdbarch_byte_order (gdbarch);
778 m_di.endian_code = gdbarch_byte_order_for_code (gdbarch);
779 m_di.application_data = this;
780 m_disassembler_options_holder = get_all_disassembler_options (gdbarch);
781 if (!m_disassembler_options_holder.empty ())
782 m_di.disassembler_options = m_disassembler_options_holder.c_str ();
783 disassemble_init_for_target (&m_di);
787 gdb_disassembler::print_insn (CORE_ADDR memaddr,
788 int *branch_delay_insns)
792 int length = gdbarch_print_insn (arch (), memaddr, &m_di);
795 memory_error (TARGET_XFER_E_IO, m_err_memaddr);
797 if (branch_delay_insns != NULL)
799 if (m_di.insn_info_valid)
800 *branch_delay_insns = m_di.branch_delay_insns;
802 *branch_delay_insns = 0;
808 gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
809 gdb_disassembly_flags flags, int how_many,
810 CORE_ADDR low, CORE_ADDR high)
812 struct symtab *symtab;
815 /* Assume symtab is valid for whole PC range. */
816 symtab = find_pc_line_symtab (low);
818 if (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL)
819 nlines = SYMTAB_LINETABLE (symtab)->nitems;
821 if (!(flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
823 do_assembly_only (gdbarch, uiout, low, high, how_many, flags);
825 else if (flags & DISASSEMBLY_SOURCE)
826 do_mixed_source_and_assembly (gdbarch, uiout, symtab, low, high,
829 else if (flags & DISASSEMBLY_SOURCE_DEPRECATED)
830 do_mixed_source_and_assembly_deprecated (gdbarch, uiout, symtab,
831 low, high, how_many, flags);
833 gdb_flush (gdb_stdout);
836 /* Print the instruction at address MEMADDR in debugged memory,
837 on STREAM. Returns the length of the instruction, in bytes,
838 and, if requested, the number of branch delay slot instructions. */
841 gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
842 struct ui_file *stream, int *branch_delay_insns)
845 gdb_disassembler di (gdbarch, stream);
847 return di.print_insn (memaddr, branch_delay_insns);
850 /* Return the length in bytes of the instruction at address MEMADDR in
854 gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR addr)
856 return gdb_print_insn (gdbarch, addr, &null_stream, NULL);
859 /* fprintf-function for gdb_buffered_insn_length. This function is a
860 nop, we don't want to print anything, we just want to compute the
861 length of the insn. */
863 static int ATTRIBUTE_PRINTF (2, 3)
864 gdb_buffered_insn_length_fprintf (void *stream, const char *format, ...)
869 /* Initialize a struct disassemble_info for gdb_buffered_insn_length.
870 Upon return, *DISASSEMBLER_OPTIONS_HOLDER owns the string pointed
871 to by DI.DISASSEMBLER_OPTIONS. */
874 gdb_buffered_insn_length_init_dis (struct gdbarch *gdbarch,
875 struct disassemble_info *di,
876 const gdb_byte *insn, int max_len,
878 std::string *disassembler_options_holder)
880 init_disassemble_info (di, NULL, gdb_buffered_insn_length_fprintf);
882 /* init_disassemble_info installs buffer_read_memory, etc.
883 so we don't need to do that here.
884 The cast is necessary until disassemble_info is const-ified. */
885 di->buffer = (gdb_byte *) insn;
886 di->buffer_length = max_len;
887 di->buffer_vma = addr;
889 di->arch = gdbarch_bfd_arch_info (gdbarch)->arch;
890 di->mach = gdbarch_bfd_arch_info (gdbarch)->mach;
891 di->endian = gdbarch_byte_order (gdbarch);
892 di->endian_code = gdbarch_byte_order_for_code (gdbarch);
894 *disassembler_options_holder = get_all_disassembler_options (gdbarch);
895 if (!disassembler_options_holder->empty ())
896 di->disassembler_options = disassembler_options_holder->c_str ();
897 disassemble_init_for_target (di);
900 /* Return the length in bytes of INSN. MAX_LEN is the size of the
901 buffer containing INSN. */
904 gdb_buffered_insn_length (struct gdbarch *gdbarch,
905 const gdb_byte *insn, int max_len, CORE_ADDR addr)
907 struct disassemble_info di;
908 std::string disassembler_options_holder;
910 gdb_buffered_insn_length_init_dis (gdbarch, &di, insn, max_len, addr,
911 &disassembler_options_holder);
913 return gdbarch_print_insn (gdbarch, addr, &di);
917 get_disassembler_options (struct gdbarch *gdbarch)
919 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
920 if (disassembler_options == NULL)
922 return *disassembler_options;
926 set_disassembler_options (char *prospective_options)
928 struct gdbarch *gdbarch = get_current_arch ();
929 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
930 const disasm_options_and_args_t *valid_options_and_args;
931 const disasm_options_t *valid_options;
932 char *options = remove_whitespace_and_extra_commas (prospective_options);
935 /* Allow all architectures, even ones that do not support 'set disassembler',
936 to reset their disassembler options to NULL. */
939 if (disassembler_options != NULL)
941 free (*disassembler_options);
942 *disassembler_options = NULL;
947 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
948 if (valid_options_and_args == NULL)
950 fprintf_filtered (gdb_stderr, _("\
951 'set disassembler-options ...' is not supported on this architecture.\n"));
955 valid_options = &valid_options_and_args->options;
957 /* Verify we have valid disassembler options. */
958 FOR_EACH_DISASSEMBLER_OPTION (opt, options)
961 for (i = 0; valid_options->name[i] != NULL; i++)
962 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
964 size_t len = strlen (valid_options->name[i]);
969 if (memcmp (opt, valid_options->name[i], len) != 0)
972 for (j = 0; valid_options->arg[i]->values[j] != NULL; j++)
973 if (disassembler_options_cmp
974 (arg, valid_options->arg[i]->values[j]) == 0)
982 else if (disassembler_options_cmp (opt, valid_options->name[i]) == 0)
984 if (valid_options->name[i] == NULL)
986 fprintf_filtered (gdb_stderr,
987 _("Invalid disassembler option value: '%s'.\n"),
993 free (*disassembler_options);
994 *disassembler_options = xstrdup (options);
998 set_disassembler_options_sfunc (const char *args, int from_tty,
999 struct cmd_list_element *c)
1001 set_disassembler_options (prospective_options);
1005 show_disassembler_options_sfunc (struct ui_file *file, int from_tty,
1006 struct cmd_list_element *c, const char *value)
1008 struct gdbarch *gdbarch = get_current_arch ();
1009 const disasm_options_and_args_t *valid_options_and_args;
1010 const disasm_option_arg_t *valid_args;
1011 const disasm_options_t *valid_options;
1013 const char *options = get_disassembler_options (gdbarch);
1014 if (options == NULL)
1017 fprintf_filtered (file, _("The current disassembler options are '%s'\n\n"),
1020 valid_options_and_args = gdbarch_valid_disassembler_options (gdbarch);
1022 if (valid_options_and_args == NULL)
1024 fputs_filtered (_("There are no disassembler options available "
1025 "for this architecture.\n"),
1030 valid_options = &valid_options_and_args->options;
1032 fprintf_filtered (file, _("\
1033 The following disassembler options are supported for use with the\n\
1034 'set disassembler-options OPTION [,OPTION]...' command:\n"));
1036 if (valid_options->description != NULL)
1038 size_t i, max_len = 0;
1040 fprintf_filtered (file, "\n");
1042 /* Compute the length of the longest option name. */
1043 for (i = 0; valid_options->name[i] != NULL; i++)
1045 size_t len = strlen (valid_options->name[i]);
1047 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1048 len += strlen (valid_options->arg[i]->name);
1053 for (i = 0, max_len++; valid_options->name[i] != NULL; i++)
1055 fprintf_filtered (file, " %s", valid_options->name[i]);
1056 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1057 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1058 if (valid_options->description[i] != NULL)
1060 size_t len = strlen (valid_options->name[i]);
1062 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1063 len += strlen (valid_options->arg[i]->name);
1064 fprintf_filtered (file, "%*c %s", (int) (max_len - len), ' ',
1065 valid_options->description[i]);
1067 fprintf_filtered (file, "\n");
1073 fprintf_filtered (file, " ");
1074 for (i = 0; valid_options->name[i] != NULL; i++)
1076 fprintf_filtered (file, "%s", valid_options->name[i]);
1077 if (valid_options->arg != NULL && valid_options->arg[i] != NULL)
1078 fprintf_filtered (file, "%s", valid_options->arg[i]->name);
1079 if (valid_options->name[i + 1] != NULL)
1080 fprintf_filtered (file, ", ");
1083 fprintf_filtered (file, "\n");
1086 valid_args = valid_options_and_args->args;
1087 if (valid_args != NULL)
1091 for (i = 0; valid_args[i].name != NULL; i++)
1093 fprintf_filtered (file, _("\n\
1094 For the options above, the following values are supported for \"%s\":\n "),
1095 valid_args[i].name);
1096 for (j = 0; valid_args[i].values[j] != NULL; j++)
1098 fprintf_filtered (file, " %s", valid_args[i].values[j]);
1101 fprintf_filtered (file, "\n");
1106 /* A completion function for "set disassembler". */
1109 disassembler_options_completer (struct cmd_list_element *ignore,
1110 completion_tracker &tracker,
1111 const char *text, const char *word)
1113 struct gdbarch *gdbarch = get_current_arch ();
1114 const disasm_options_and_args_t *opts_and_args
1115 = gdbarch_valid_disassembler_options (gdbarch);
1117 if (opts_and_args != NULL)
1119 const disasm_options_t *opts = &opts_and_args->options;
1121 /* Only attempt to complete on the last option text. */
1122 const char *separator = strrchr (text, ',');
1123 if (separator != NULL)
1124 text = separator + 1;
1125 text = skip_spaces (text);
1126 complete_on_enum (tracker, opts->name, text, word);
1131 /* Initialization code. */
1134 _initialize_disasm (void)
1136 struct cmd_list_element *cmd;
1138 /* Add the command that controls the disassembler options. */
1139 cmd = add_setshow_string_noescape_cmd ("disassembler-options", no_class,
1140 &prospective_options, _("\
1141 Set the disassembler options.\n\
1142 Usage: set disassembler-options OPTION [,OPTION]...\n\n\
1143 See: 'show disassembler-options' for valid option values."), _("\
1144 Show the disassembler options."), NULL,
1145 set_disassembler_options_sfunc,
1146 show_disassembler_options_sfunc,
1147 &setlist, &showlist);
1148 set_cmd_completer (cmd, disassembler_options_completer);