1 /* Disassemble support for GDB.
3 Copyright (C) 2000-2017 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"
34 /* Disassemble functions.
35 FIXME: We should get rid of all the duplicate code in gdb that does
36 the same thing: disassemble_command() and the gdbtk variation. */
38 /* This variable is used to hold the prospective disassembler_options value
39 which is set by the "set disassembler_options" command. */
40 static char *prospective_options = NULL;
42 /* This structure is used to store line number information for the
44 We need a different sort of line table from the normal one cuz we can't
45 depend upon implicit line-end pc's for lines to do the
46 reordering in this function. */
48 struct deprecated_dis_line_entry
55 /* This Structure is used to store line number information.
56 We need a different sort of line table from the normal one cuz we can't
57 depend upon implicit line-end pc's for lines to do the
58 reordering in this function. */
62 struct symtab *symtab;
66 /* Hash function for dis_line_entry. */
69 hash_dis_line_entry (const void *item)
71 const struct dis_line_entry *dle = (const struct dis_line_entry *) item;
73 return htab_hash_pointer (dle->symtab) + dle->line;
76 /* Equal function for dis_line_entry. */
79 eq_dis_line_entry (const void *item_lhs, const void *item_rhs)
81 const struct dis_line_entry *lhs = (const struct dis_line_entry *) item_lhs;
82 const struct dis_line_entry *rhs = (const struct dis_line_entry *) item_rhs;
84 return (lhs->symtab == rhs->symtab
85 && lhs->line == rhs->line);
88 /* Create the table to manage lines for mixed source/disassembly. */
91 allocate_dis_line_table (void)
93 return htab_create_alloc (41,
94 hash_dis_line_entry, eq_dis_line_entry,
95 xfree, xcalloc, xfree);
98 /* Add a new dis_line_entry containing SYMTAB and LINE to TABLE. */
101 add_dis_line_entry (htab_t table, struct symtab *symtab, int line)
104 struct dis_line_entry dle, *dlep;
108 slot = htab_find_slot (table, &dle, INSERT);
111 dlep = XNEW (struct dis_line_entry);
112 dlep->symtab = symtab;
118 /* Return non-zero if SYMTAB, LINE are in TABLE. */
121 line_has_code_p (htab_t table, struct symtab *symtab, int line)
123 struct dis_line_entry dle;
127 return htab_find (table, &dle) != NULL;
130 /* Wrapper of target_read_code. */
133 gdb_disassembler::dis_asm_read_memory (bfd_vma memaddr, gdb_byte *myaddr,
135 struct disassemble_info *info)
137 return target_read_code (memaddr, myaddr, len);
140 /* Wrapper of memory_error. */
143 gdb_disassembler::dis_asm_memory_error (int err, bfd_vma memaddr,
144 struct disassemble_info *info)
146 gdb_disassembler *self
147 = static_cast<gdb_disassembler *>(info->application_data);
149 self->m_err_memaddr = memaddr;
152 /* Wrapper of print_address. */
155 gdb_disassembler::dis_asm_print_address (bfd_vma addr,
156 struct disassemble_info *info)
158 gdb_disassembler *self
159 = static_cast<gdb_disassembler *>(info->application_data);
161 print_address (self->arch (), addr, self->stream ());
165 compare_lines (const void *mle1p, const void *mle2p)
167 struct deprecated_dis_line_entry *mle1, *mle2;
170 mle1 = (struct deprecated_dis_line_entry *) mle1p;
171 mle2 = (struct deprecated_dis_line_entry *) mle2p;
173 /* End of sequence markers have a line number of 0 but don't want to
174 be sorted to the head of the list, instead sort by PC. */
175 if (mle1->line == 0 || mle2->line == 0)
177 val = mle1->start_pc - mle2->start_pc;
179 val = mle1->line - mle2->line;
183 val = mle1->line - mle2->line;
185 val = mle1->start_pc - mle2->start_pc;
193 gdb_pretty_print_disassembler::pretty_print_insn (struct ui_out *uiout,
194 const struct disasm_insn *insn,
195 gdb_disassembly_flags flags)
197 /* parts of the symbolic representation of the address */
202 char *filename = NULL;
205 struct gdbarch *gdbarch = arch ();
208 ui_out_emit_tuple tuple_emitter (uiout, NULL);
211 if (insn->number != 0)
213 uiout->field_fmt ("insn-number", "%u", insn->number);
217 if ((flags & DISASSEMBLY_SPECULATIVE) != 0)
219 if (insn->is_speculative)
221 uiout->field_string ("is-speculative", "?");
223 /* The speculative execution indication overwrites the first
224 character of the PC prefix.
225 We assume a PC prefix length of 3 characters. */
226 if ((flags & DISASSEMBLY_OMIT_PC) == 0)
227 uiout->text (pc_prefix (pc) + 1);
231 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
232 uiout->text (pc_prefix (pc));
236 else if ((flags & DISASSEMBLY_OMIT_PC) == 0)
237 uiout->text (pc_prefix (pc));
238 uiout->field_core_addr ("address", gdbarch, pc);
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);
249 uiout->field_int ("offset", offset);
250 uiout->text (">:\t");
255 if (filename != NULL)
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 inner_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 tuple_emitter (uiout, "src_and_asm_line");
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 gdb_disassembler::gdb_disassembler (struct gdbarch *gdbarch,
731 struct ui_file *file,
732 di_read_memory_ftype read_memory_func)
733 : m_gdbarch (gdbarch),
736 init_disassemble_info (&m_di, file, fprintf_disasm);
737 m_di.flavour = bfd_target_unknown_flavour;
738 m_di.memory_error_func = dis_asm_memory_error;
739 m_di.print_address_func = dis_asm_print_address;
740 /* NOTE: cagney/2003-04-28: The original code, from the old Insight
741 disassembler had a local optomization here. By default it would
742 access the executable file, instead of the target memory (there
743 was a growing list of exceptions though). Unfortunately, the
744 heuristic was flawed. Commands like "disassemble &variable"
745 didn't work as they relied on the access going to the target.
746 Further, it has been supperseeded by trust-read-only-sections
747 (although that should be superseeded by target_trust..._p()). */
748 m_di.read_memory_func = read_memory_func;
749 m_di.arch = gdbarch_bfd_arch_info (gdbarch)->arch;
750 m_di.mach = gdbarch_bfd_arch_info (gdbarch)->mach;
751 m_di.endian = gdbarch_byte_order (gdbarch);
752 m_di.endian_code = gdbarch_byte_order_for_code (gdbarch);
753 m_di.application_data = this;
754 m_di.disassembler_options = get_disassembler_options (gdbarch);
755 disassemble_init_for_target (&m_di);
759 gdb_disassembler::print_insn (CORE_ADDR memaddr,
760 int *branch_delay_insns)
764 int length = gdbarch_print_insn (arch (), memaddr, &m_di);
767 memory_error (TARGET_XFER_E_IO, m_err_memaddr);
769 if (branch_delay_insns != NULL)
771 if (m_di.insn_info_valid)
772 *branch_delay_insns = m_di.branch_delay_insns;
774 *branch_delay_insns = 0;
780 gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout,
781 gdb_disassembly_flags flags, int how_many,
782 CORE_ADDR low, CORE_ADDR high)
784 struct symtab *symtab;
787 /* Assume symtab is valid for whole PC range. */
788 symtab = find_pc_line_symtab (low);
790 if (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL)
791 nlines = SYMTAB_LINETABLE (symtab)->nitems;
793 if (!(flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
795 do_assembly_only (gdbarch, uiout, low, high, how_many, flags);
797 else if (flags & DISASSEMBLY_SOURCE)
798 do_mixed_source_and_assembly (gdbarch, uiout, symtab, low, high,
801 else if (flags & DISASSEMBLY_SOURCE_DEPRECATED)
802 do_mixed_source_and_assembly_deprecated (gdbarch, uiout, symtab,
803 low, high, how_many, flags);
805 gdb_flush (gdb_stdout);
808 /* Print the instruction at address MEMADDR in debugged memory,
809 on STREAM. Returns the length of the instruction, in bytes,
810 and, if requested, the number of branch delay slot instructions. */
813 gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr,
814 struct ui_file *stream, int *branch_delay_insns)
817 gdb_disassembler di (gdbarch, stream);
819 return di.print_insn (memaddr, branch_delay_insns);
822 /* Return the length in bytes of the instruction at address MEMADDR in
826 gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR addr)
828 return gdb_print_insn (gdbarch, addr, &null_stream, NULL);
831 /* fprintf-function for gdb_buffered_insn_length. This function is a
832 nop, we don't want to print anything, we just want to compute the
833 length of the insn. */
835 static int ATTRIBUTE_PRINTF (2, 3)
836 gdb_buffered_insn_length_fprintf (void *stream, const char *format, ...)
841 /* Initialize a struct disassemble_info for gdb_buffered_insn_length. */
844 gdb_buffered_insn_length_init_dis (struct gdbarch *gdbarch,
845 struct disassemble_info *di,
846 const gdb_byte *insn, int max_len,
849 init_disassemble_info (di, NULL, gdb_buffered_insn_length_fprintf);
851 /* init_disassemble_info installs buffer_read_memory, etc.
852 so we don't need to do that here.
853 The cast is necessary until disassemble_info is const-ified. */
854 di->buffer = (gdb_byte *) insn;
855 di->buffer_length = max_len;
856 di->buffer_vma = addr;
858 di->arch = gdbarch_bfd_arch_info (gdbarch)->arch;
859 di->mach = gdbarch_bfd_arch_info (gdbarch)->mach;
860 di->endian = gdbarch_byte_order (gdbarch);
861 di->endian_code = gdbarch_byte_order_for_code (gdbarch);
863 di->disassembler_options = get_disassembler_options (gdbarch);
864 disassemble_init_for_target (di);
867 /* Return the length in bytes of INSN. MAX_LEN is the size of the
868 buffer containing INSN. */
871 gdb_buffered_insn_length (struct gdbarch *gdbarch,
872 const gdb_byte *insn, int max_len, CORE_ADDR addr)
874 struct disassemble_info di;
876 gdb_buffered_insn_length_init_dis (gdbarch, &di, insn, max_len, addr);
878 return gdbarch_print_insn (gdbarch, addr, &di);
882 get_disassembler_options (struct gdbarch *gdbarch)
884 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
885 if (disassembler_options == NULL)
887 return *disassembler_options;
891 set_disassembler_options (char *prospective_options)
893 struct gdbarch *gdbarch = get_current_arch ();
894 char **disassembler_options = gdbarch_disassembler_options (gdbarch);
895 const disasm_options_t *valid_options;
896 char *options = remove_whitespace_and_extra_commas (prospective_options);
899 /* Allow all architectures, even ones that do not support 'set disassembler',
900 to reset their disassembler options to NULL. */
903 if (disassembler_options != NULL)
905 free (*disassembler_options);
906 *disassembler_options = NULL;
911 valid_options = gdbarch_valid_disassembler_options (gdbarch);
912 if (valid_options == NULL)
914 fprintf_filtered (gdb_stdlog, _("\
915 'set disassembler-options ...' is not supported on this architecture.\n"));
919 /* Verify we have valid disassembler options. */
920 FOR_EACH_DISASSEMBLER_OPTION (opt, options)
923 for (i = 0; valid_options->name[i] != NULL; i++)
924 if (disassembler_options_cmp (opt, valid_options->name[i]) == 0)
926 if (valid_options->name[i] == NULL)
928 fprintf_filtered (gdb_stdlog,
929 _("Invalid disassembler option value: '%s'.\n"),
935 free (*disassembler_options);
936 *disassembler_options = xstrdup (options);
940 set_disassembler_options_sfunc (const char *args, int from_tty,
941 struct cmd_list_element *c)
943 set_disassembler_options (prospective_options);
947 show_disassembler_options_sfunc (struct ui_file *file, int from_tty,
948 struct cmd_list_element *c, const char *value)
950 struct gdbarch *gdbarch = get_current_arch ();
951 const disasm_options_t *valid_options;
953 const char *options = get_disassembler_options (gdbarch);
957 fprintf_filtered (file, _("The current disassembler options are '%s'\n"),
960 valid_options = gdbarch_valid_disassembler_options (gdbarch);
962 if (valid_options == NULL)
965 fprintf_filtered (file, _("\n\
966 The following disassembler options are supported for use with the\n\
967 'set disassembler-options <option>[,<option>...]' command:\n"));
969 if (valid_options->description != NULL)
971 size_t i, max_len = 0;
973 /* Compute the length of the longest option name. */
974 for (i = 0; valid_options->name[i] != NULL; i++)
976 size_t len = strlen (valid_options->name[i]);
981 for (i = 0, max_len++; valid_options->name[i] != NULL; i++)
983 fprintf_filtered (file, " %s", valid_options->name[i]);
984 if (valid_options->description[i] != NULL)
985 fprintf_filtered (file, "%*c %s",
986 (int)(max_len - strlen (valid_options->name[i])), ' ',
987 valid_options->description[i]);
988 fprintf_filtered (file, "\n");
994 fprintf_filtered (file, " ");
995 for (i = 0; valid_options->name[i] != NULL; i++)
997 fprintf_filtered (file, "%s", valid_options->name[i]);
998 if (valid_options->name[i + 1] != NULL)
999 fprintf_filtered (file, ", ");
1002 fprintf_filtered (file, "\n");
1006 /* A completion function for "set disassembler". */
1009 disassembler_options_completer (struct cmd_list_element *ignore,
1010 completion_tracker &tracker,
1011 const char *text, const char *word)
1013 struct gdbarch *gdbarch = get_current_arch ();
1014 const disasm_options_t *opts = gdbarch_valid_disassembler_options (gdbarch);
1018 /* Only attempt to complete on the last option text. */
1019 const char *separator = strrchr (text, ',');
1020 if (separator != NULL)
1021 text = separator + 1;
1022 text = skip_spaces (text);
1023 complete_on_enum (tracker, opts->name, text, word);
1028 /* Initialization code. */
1031 _initialize_disasm (void)
1033 struct cmd_list_element *cmd;
1035 /* Add the command that controls the disassembler options. */
1036 cmd = add_setshow_string_noescape_cmd ("disassembler-options", no_class,
1037 &prospective_options, _("\
1038 Set the disassembler options.\n\
1039 Usage: set disassembler-options <option>[,<option>...]\n\n\
1040 See: 'show disassembler-options' for valid option values.\n"), _("\
1041 Show the disassembler options."), NULL,
1042 set_disassembler_options_sfunc,
1043 show_disassembler_options_sfunc,
1044 &setlist, &showlist);
1045 set_cmd_completer (cmd, disassembler_options_completer);