Commit | Line | Data |
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92df71f0 | 1 | /* Disassemble support for GDB. |
1bac305b | 2 | |
32d0add0 | 3 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
92df71f0 FN |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
92df71f0 FN |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
92df71f0 FN |
19 | |
20 | #include "defs.h" | |
21 | #include "target.h" | |
22 | #include "value.h" | |
23 | #include "ui-out.h" | |
92df71f0 | 24 | #include "disasm.h" |
810ecf9f | 25 | #include "gdbcore.h" |
a89aa300 | 26 | #include "dis-asm.h" |
6ff0ba5f | 27 | #include "source.h" |
92df71f0 FN |
28 | |
29 | /* Disassemble functions. | |
30 | FIXME: We should get rid of all the duplicate code in gdb that does | |
0963b4bd | 31 | the same thing: disassemble_command() and the gdbtk variation. */ |
92df71f0 | 32 | |
6ff0ba5f DE |
33 | /* This structure is used to store line number information for the |
34 | deprecated /m option. | |
92df71f0 FN |
35 | We need a different sort of line table from the normal one cuz we can't |
36 | depend upon implicit line-end pc's for lines to do the | |
37 | reordering in this function. */ | |
38 | ||
6ff0ba5f | 39 | struct deprecated_dis_line_entry |
92df71f0 FN |
40 | { |
41 | int line; | |
42 | CORE_ADDR start_pc; | |
43 | CORE_ADDR end_pc; | |
44 | }; | |
45 | ||
6ff0ba5f DE |
46 | /* This Structure is used to store line number information. |
47 | We need a different sort of line table from the normal one cuz we can't | |
48 | depend upon implicit line-end pc's for lines to do the | |
49 | reordering in this function. */ | |
50 | ||
51 | struct dis_line_entry | |
52 | { | |
53 | struct symtab *symtab; | |
54 | int line; | |
55 | }; | |
56 | ||
57 | /* Hash function for dis_line_entry. */ | |
58 | ||
59 | static hashval_t | |
60 | hash_dis_line_entry (const void *item) | |
61 | { | |
9a3c8263 | 62 | const struct dis_line_entry *dle = (const struct dis_line_entry *) item; |
6ff0ba5f DE |
63 | |
64 | return htab_hash_pointer (dle->symtab) + dle->line; | |
65 | } | |
66 | ||
67 | /* Equal function for dis_line_entry. */ | |
68 | ||
69 | static int | |
70 | eq_dis_line_entry (const void *item_lhs, const void *item_rhs) | |
71 | { | |
9a3c8263 SM |
72 | const struct dis_line_entry *lhs = (const struct dis_line_entry *) item_lhs; |
73 | const struct dis_line_entry *rhs = (const struct dis_line_entry *) item_rhs; | |
6ff0ba5f DE |
74 | |
75 | return (lhs->symtab == rhs->symtab | |
76 | && lhs->line == rhs->line); | |
77 | } | |
78 | ||
79 | /* Create the table to manage lines for mixed source/disassembly. */ | |
80 | ||
81 | static htab_t | |
82 | allocate_dis_line_table (void) | |
83 | { | |
84 | return htab_create_alloc (41, | |
85 | hash_dis_line_entry, eq_dis_line_entry, | |
86 | xfree, xcalloc, xfree); | |
87 | } | |
88 | ||
89 | /* Add DLE to TABLE. | |
90 | Returns 1 if added, 0 if already present. */ | |
91 | ||
92 | static void | |
93 | maybe_add_dis_line_entry (htab_t table, struct symtab *symtab, int line) | |
94 | { | |
95 | void **slot; | |
96 | struct dis_line_entry dle, *dlep; | |
97 | ||
98 | dle.symtab = symtab; | |
99 | dle.line = line; | |
100 | slot = htab_find_slot (table, &dle, INSERT); | |
101 | if (*slot == NULL) | |
102 | { | |
103 | dlep = XNEW (struct dis_line_entry); | |
104 | dlep->symtab = symtab; | |
105 | dlep->line = line; | |
106 | *slot = dlep; | |
107 | } | |
108 | } | |
109 | ||
110 | /* Return non-zero if SYMTAB, LINE are in TABLE. */ | |
111 | ||
112 | static int | |
113 | line_has_code_p (htab_t table, struct symtab *symtab, int line) | |
114 | { | |
115 | struct dis_line_entry dle; | |
116 | ||
117 | dle.symtab = symtab; | |
118 | dle.line = line; | |
119 | return htab_find (table, &dle) != NULL; | |
120 | } | |
121 | ||
810ecf9f AC |
122 | /* Like target_read_memory, but slightly different parameters. */ |
123 | static int | |
1b0ba102 | 124 | dis_asm_read_memory (bfd_vma memaddr, gdb_byte *myaddr, unsigned int len, |
a89aa300 | 125 | struct disassemble_info *info) |
810ecf9f | 126 | { |
283f7163 | 127 | return target_read_code (memaddr, myaddr, len); |
810ecf9f AC |
128 | } |
129 | ||
130 | /* Like memory_error with slightly different parameters. */ | |
131 | static void | |
a89aa300 AC |
132 | dis_asm_memory_error (int status, bfd_vma memaddr, |
133 | struct disassemble_info *info) | |
810ecf9f AC |
134 | { |
135 | memory_error (status, memaddr); | |
136 | } | |
137 | ||
138 | /* Like print_address with slightly different parameters. */ | |
139 | static void | |
140 | dis_asm_print_address (bfd_vma addr, struct disassemble_info *info) | |
141 | { | |
9a3c8263 | 142 | struct gdbarch *gdbarch = (struct gdbarch *) info->application_data; |
9a619af0 | 143 | |
9a3c8263 | 144 | print_address (gdbarch, addr, (struct ui_file *) info->stream); |
810ecf9f AC |
145 | } |
146 | ||
92df71f0 | 147 | static int |
bde58177 | 148 | compare_lines (const void *mle1p, const void *mle2p) |
92df71f0 | 149 | { |
6ff0ba5f | 150 | struct deprecated_dis_line_entry *mle1, *mle2; |
92df71f0 FN |
151 | int val; |
152 | ||
6ff0ba5f DE |
153 | mle1 = (struct deprecated_dis_line_entry *) mle1p; |
154 | mle2 = (struct deprecated_dis_line_entry *) mle2p; | |
92df71f0 | 155 | |
9011945e AB |
156 | /* End of sequence markers have a line number of 0 but don't want to |
157 | be sorted to the head of the list, instead sort by PC. */ | |
158 | if (mle1->line == 0 || mle2->line == 0) | |
159 | { | |
160 | val = mle1->start_pc - mle2->start_pc; | |
161 | if (val == 0) | |
162 | val = mle1->line - mle2->line; | |
163 | } | |
164 | else | |
165 | { | |
166 | val = mle1->line - mle2->line; | |
167 | if (val == 0) | |
168 | val = mle1->start_pc - mle2->start_pc; | |
169 | } | |
170 | return val; | |
92df71f0 FN |
171 | } |
172 | ||
173 | static int | |
13274fc3 UW |
174 | dump_insns (struct gdbarch *gdbarch, struct ui_out *uiout, |
175 | struct disassemble_info * di, | |
92df71f0 | 176 | CORE_ADDR low, CORE_ADDR high, |
6ff0ba5f DE |
177 | int how_many, int flags, struct ui_file *stb, |
178 | CORE_ADDR *end_pc) | |
92df71f0 FN |
179 | { |
180 | int num_displayed = 0; | |
181 | CORE_ADDR pc; | |
182 | ||
183 | /* parts of the symbolic representation of the address */ | |
184 | int unmapped; | |
92df71f0 FN |
185 | int offset; |
186 | int line; | |
3b31d625 | 187 | struct cleanup *ui_out_chain; |
92df71f0 FN |
188 | |
189 | for (pc = low; pc < high;) | |
190 | { | |
1211bce3 EZ |
191 | char *filename = NULL; |
192 | char *name = NULL; | |
193 | ||
92df71f0 FN |
194 | QUIT; |
195 | if (how_many >= 0) | |
196 | { | |
197 | if (num_displayed >= how_many) | |
198 | break; | |
199 | else | |
200 | num_displayed++; | |
201 | } | |
3b31d625 | 202 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL); |
946287b7 MM |
203 | |
204 | if ((flags & DISASSEMBLY_OMIT_PC) == 0) | |
205 | ui_out_text (uiout, pc_prefix (pc)); | |
5af949e3 | 206 | ui_out_field_core_addr (uiout, "address", gdbarch, pc); |
92df71f0 | 207 | |
22e722e1 | 208 | if (!build_address_symbolic (gdbarch, pc, 0, &name, &offset, &filename, |
92df71f0 FN |
209 | &line, &unmapped)) |
210 | { | |
211 | /* We don't care now about line, filename and | |
0963b4bd | 212 | unmapped. But we might in the future. */ |
92df71f0 | 213 | ui_out_text (uiout, " <"); |
9c419145 PP |
214 | if ((flags & DISASSEMBLY_OMIT_FNAME) == 0) |
215 | ui_out_field_string (uiout, "func-name", name); | |
92df71f0 FN |
216 | ui_out_text (uiout, "+"); |
217 | ui_out_field_int (uiout, "offset", offset); | |
218 | ui_out_text (uiout, ">:\t"); | |
219 | } | |
13adf674 DJ |
220 | else |
221 | ui_out_text (uiout, ":\t"); | |
222 | ||
92df71f0 FN |
223 | if (filename != NULL) |
224 | xfree (filename); | |
225 | if (name != NULL) | |
226 | xfree (name); | |
227 | ||
f99d8bf4 | 228 | ui_file_rewind (stb); |
e6158f16 HZ |
229 | if (flags & DISASSEMBLY_RAW_INSN) |
230 | { | |
231 | CORE_ADDR old_pc = pc; | |
232 | bfd_byte data; | |
233 | int status; | |
b716877b AB |
234 | const char *spacer = ""; |
235 | ||
236 | /* Build the opcodes using a temporary stream so we can | |
237 | write them out in a single go for the MI. */ | |
f99d8bf4 | 238 | struct ui_file *opcode_stream = mem_fileopen (); |
b716877b | 239 | struct cleanup *cleanups = |
f99d8bf4 | 240 | make_cleanup_ui_file_delete (opcode_stream); |
9a619af0 | 241 | |
e6158f16 HZ |
242 | pc += gdbarch_print_insn (gdbarch, pc, di); |
243 | for (;old_pc < pc; old_pc++) | |
244 | { | |
245 | status = (*di->read_memory_func) (old_pc, &data, 1, di); | |
246 | if (status != 0) | |
247 | (*di->memory_error_func) (status, old_pc, di); | |
f99d8bf4 | 248 | fprintf_filtered (opcode_stream, "%s%02x", |
b716877b AB |
249 | spacer, (unsigned) data); |
250 | spacer = " "; | |
e6158f16 | 251 | } |
b716877b | 252 | ui_out_field_stream (uiout, "opcodes", opcode_stream); |
e6158f16 | 253 | ui_out_text (uiout, "\t"); |
b716877b AB |
254 | |
255 | do_cleanups (cleanups); | |
e6158f16 HZ |
256 | } |
257 | else | |
258 | pc += gdbarch_print_insn (gdbarch, pc, di); | |
92df71f0 | 259 | ui_out_field_stream (uiout, "inst", stb); |
f99d8bf4 | 260 | ui_file_rewind (stb); |
3b31d625 | 261 | do_cleanups (ui_out_chain); |
92df71f0 FN |
262 | ui_out_text (uiout, "\n"); |
263 | } | |
6ff0ba5f DE |
264 | |
265 | if (end_pc != NULL) | |
266 | *end_pc = pc; | |
92df71f0 FN |
267 | return num_displayed; |
268 | } | |
269 | ||
270 | /* The idea here is to present a source-O-centric view of a | |
271 | function to the user. This means that things are presented | |
272 | in source order, with (possibly) out of order assembly | |
6ff0ba5f DE |
273 | immediately following. |
274 | ||
275 | N.B. This view is deprecated. */ | |
0963b4bd | 276 | |
92df71f0 | 277 | static void |
6ff0ba5f DE |
278 | do_mixed_source_and_assembly_deprecated |
279 | (struct gdbarch *gdbarch, struct ui_out *uiout, | |
280 | struct disassemble_info *di, struct symtab *symtab, | |
281 | CORE_ADDR low, CORE_ADDR high, | |
282 | int how_many, int flags, struct ui_file *stb) | |
92df71f0 FN |
283 | { |
284 | int newlines = 0; | |
6ff0ba5f DE |
285 | int nlines; |
286 | struct linetable_entry *le; | |
287 | struct deprecated_dis_line_entry *mle; | |
92df71f0 FN |
288 | struct symtab_and_line sal; |
289 | int i; | |
290 | int out_of_order = 0; | |
291 | int next_line = 0; | |
92df71f0 | 292 | int num_displayed = 0; |
4cd29721 | 293 | enum print_source_lines_flags psl_flags = 0; |
3b31d625 | 294 | struct cleanup *ui_out_chain; |
0127c0d3 JJ |
295 | struct cleanup *ui_out_tuple_chain = make_cleanup (null_cleanup, 0); |
296 | struct cleanup *ui_out_list_chain = make_cleanup (null_cleanup, 0); | |
92df71f0 | 297 | |
6ff0ba5f DE |
298 | gdb_assert (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL); |
299 | ||
300 | nlines = SYMTAB_LINETABLE (symtab)->nitems; | |
301 | le = SYMTAB_LINETABLE (symtab)->item; | |
302 | ||
4cd29721 MM |
303 | if (flags & DISASSEMBLY_FILENAME) |
304 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
305 | ||
6ff0ba5f DE |
306 | mle = (struct deprecated_dis_line_entry *) |
307 | alloca (nlines * sizeof (struct deprecated_dis_line_entry)); | |
92df71f0 FN |
308 | |
309 | /* Copy linetable entries for this function into our data | |
310 | structure, creating end_pc's and setting out_of_order as | |
311 | appropriate. */ | |
312 | ||
313 | /* First, skip all the preceding functions. */ | |
314 | ||
315 | for (i = 0; i < nlines - 1 && le[i].pc < low; i++); | |
316 | ||
317 | /* Now, copy all entries before the end of this function. */ | |
318 | ||
319 | for (; i < nlines - 1 && le[i].pc < high; i++) | |
320 | { | |
321 | if (le[i].line == le[i + 1].line && le[i].pc == le[i + 1].pc) | |
0963b4bd | 322 | continue; /* Ignore duplicates. */ |
92df71f0 FN |
323 | |
324 | /* Skip any end-of-function markers. */ | |
325 | if (le[i].line == 0) | |
326 | continue; | |
327 | ||
328 | mle[newlines].line = le[i].line; | |
329 | if (le[i].line > le[i + 1].line) | |
330 | out_of_order = 1; | |
331 | mle[newlines].start_pc = le[i].pc; | |
332 | mle[newlines].end_pc = le[i + 1].pc; | |
333 | newlines++; | |
334 | } | |
335 | ||
336 | /* If we're on the last line, and it's part of the function, | |
337 | then we need to get the end pc in a special way. */ | |
338 | ||
339 | if (i == nlines - 1 && le[i].pc < high) | |
340 | { | |
341 | mle[newlines].line = le[i].line; | |
342 | mle[newlines].start_pc = le[i].pc; | |
343 | sal = find_pc_line (le[i].pc, 0); | |
344 | mle[newlines].end_pc = sal.end; | |
345 | newlines++; | |
346 | } | |
347 | ||
6ff0ba5f | 348 | /* Now, sort mle by line #s (and, then by addresses within lines). */ |
92df71f0 FN |
349 | |
350 | if (out_of_order) | |
6ff0ba5f DE |
351 | qsort (mle, newlines, sizeof (struct deprecated_dis_line_entry), |
352 | compare_lines); | |
92df71f0 FN |
353 | |
354 | /* Now, for each line entry, emit the specified lines (unless | |
355 | they have been emitted before), followed by the assembly code | |
356 | for that line. */ | |
357 | ||
3b31d625 | 358 | ui_out_chain = make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); |
92df71f0 FN |
359 | |
360 | for (i = 0; i < newlines; i++) | |
361 | { | |
92df71f0 FN |
362 | /* Print out everything from next_line to the current line. */ |
363 | if (mle[i].line >= next_line) | |
364 | { | |
365 | if (next_line != 0) | |
366 | { | |
0963b4bd | 367 | /* Just one line to print. */ |
92df71f0 FN |
368 | if (next_line == mle[i].line) |
369 | { | |
3b31d625 EZ |
370 | ui_out_tuple_chain |
371 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
372 | "src_and_asm_line"); | |
4cd29721 | 373 | print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags); |
92df71f0 FN |
374 | } |
375 | else | |
376 | { | |
0963b4bd | 377 | /* Several source lines w/o asm instructions associated. */ |
92df71f0 FN |
378 | for (; next_line < mle[i].line; next_line++) |
379 | { | |
3b31d625 EZ |
380 | struct cleanup *ui_out_list_chain_line; |
381 | struct cleanup *ui_out_tuple_chain_line; | |
382 | ||
383 | ui_out_tuple_chain_line | |
384 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
385 | "src_and_asm_line"); | |
92df71f0 | 386 | print_source_lines (symtab, next_line, next_line + 1, |
4cd29721 | 387 | psl_flags); |
3b31d625 EZ |
388 | ui_out_list_chain_line |
389 | = make_cleanup_ui_out_list_begin_end (uiout, | |
390 | "line_asm_insn"); | |
391 | do_cleanups (ui_out_list_chain_line); | |
392 | do_cleanups (ui_out_tuple_chain_line); | |
92df71f0 FN |
393 | } |
394 | /* Print the last line and leave list open for | |
0963b4bd | 395 | asm instructions to be added. */ |
3b31d625 EZ |
396 | ui_out_tuple_chain |
397 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
398 | "src_and_asm_line"); | |
4cd29721 | 399 | print_source_lines (symtab, next_line, mle[i].line + 1, psl_flags); |
92df71f0 FN |
400 | } |
401 | } | |
402 | else | |
403 | { | |
3b31d625 | 404 | ui_out_tuple_chain |
3e43a32a MS |
405 | = make_cleanup_ui_out_tuple_begin_end (uiout, |
406 | "src_and_asm_line"); | |
4cd29721 | 407 | print_source_lines (symtab, mle[i].line, mle[i].line + 1, psl_flags); |
92df71f0 FN |
408 | } |
409 | ||
410 | next_line = mle[i].line + 1; | |
3b31d625 EZ |
411 | ui_out_list_chain |
412 | = make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
92df71f0 FN |
413 | } |
414 | ||
13274fc3 UW |
415 | num_displayed += dump_insns (gdbarch, uiout, di, |
416 | mle[i].start_pc, mle[i].end_pc, | |
6ff0ba5f | 417 | how_many, flags, stb, NULL); |
0127c0d3 JJ |
418 | |
419 | /* When we've reached the end of the mle array, or we've seen the last | |
420 | assembly range for this source line, close out the list/tuple. */ | |
421 | if (i == (newlines - 1) || mle[i + 1].line > mle[i].line) | |
92df71f0 | 422 | { |
3b31d625 EZ |
423 | do_cleanups (ui_out_list_chain); |
424 | do_cleanups (ui_out_tuple_chain); | |
0127c0d3 JJ |
425 | ui_out_tuple_chain = make_cleanup (null_cleanup, 0); |
426 | ui_out_list_chain = make_cleanup (null_cleanup, 0); | |
92df71f0 | 427 | ui_out_text (uiout, "\n"); |
92df71f0 | 428 | } |
0127c0d3 JJ |
429 | if (how_many >= 0 && num_displayed >= how_many) |
430 | break; | |
92df71f0 | 431 | } |
3b31d625 | 432 | do_cleanups (ui_out_chain); |
92df71f0 FN |
433 | } |
434 | ||
6ff0ba5f DE |
435 | /* The idea here is to present a source-O-centric view of a |
436 | function to the user. This means that things are presented | |
437 | in source order, with (possibly) out of order assembly | |
438 | immediately following. */ | |
439 | ||
440 | static void | |
441 | do_mixed_source_and_assembly (struct gdbarch *gdbarch, struct ui_out *uiout, | |
442 | struct disassemble_info *di, | |
443 | struct symtab *main_symtab, | |
444 | CORE_ADDR low, CORE_ADDR high, | |
445 | int how_many, int flags, struct ui_file *stb) | |
446 | { | |
447 | int newlines = 0; | |
448 | const struct linetable_entry *le, *first_le; | |
449 | struct symtab_and_line sal; | |
450 | int i, nlines; | |
451 | int out_of_order = 0; | |
452 | int next_line = 0; | |
453 | int num_displayed = 0; | |
454 | enum print_source_lines_flags psl_flags = 0; | |
455 | struct cleanup *cleanups; | |
456 | struct cleanup *ui_out_chain; | |
457 | struct cleanup *ui_out_tuple_chain; | |
458 | struct cleanup *ui_out_list_chain; | |
459 | CORE_ADDR pc; | |
460 | struct symtab *last_symtab; | |
461 | int last_line; | |
462 | htab_t dis_line_table; | |
463 | ||
464 | gdb_assert (main_symtab != NULL && SYMTAB_LINETABLE (main_symtab) != NULL); | |
465 | ||
466 | /* First pass: collect the list of all source files and lines. | |
467 | We do this so that we can only print lines containing code once. | |
468 | We try to print the source text leading up to the next instruction, | |
469 | but if that text is for code that will be disassembled later, then | |
470 | we'll want to defer printing it until later with its associated code. */ | |
471 | ||
472 | dis_line_table = allocate_dis_line_table (); | |
473 | cleanups = make_cleanup_htab_delete (dis_line_table); | |
474 | ||
475 | pc = low; | |
476 | ||
477 | /* The prologue may be empty, but there may still be a line number entry | |
478 | for the opening brace which is distinct from the first line of code. | |
479 | If the prologue has been eliminated find_pc_line may return the source | |
480 | line after the opening brace. We still want to print this opening brace. | |
481 | first_le is used to implement this. */ | |
482 | ||
483 | nlines = SYMTAB_LINETABLE (main_symtab)->nitems; | |
484 | le = SYMTAB_LINETABLE (main_symtab)->item; | |
485 | first_le = NULL; | |
486 | ||
487 | /* Skip all the preceding functions. */ | |
488 | for (i = 0; i < nlines && le[i].pc < low; i++) | |
489 | continue; | |
490 | ||
491 | if (i < nlines && le[i].pc < high) | |
492 | first_le = &le[i]; | |
493 | ||
494 | /* Add lines for every pc value. */ | |
495 | while (pc < high) | |
496 | { | |
497 | struct symtab_and_line sal; | |
498 | int length; | |
499 | ||
500 | sal = find_pc_line (pc, 0); | |
501 | length = gdb_insn_length (gdbarch, pc); | |
502 | pc += length; | |
503 | ||
504 | if (sal.symtab != NULL) | |
505 | maybe_add_dis_line_entry (dis_line_table, sal.symtab, sal.line); | |
506 | } | |
507 | ||
508 | /* Second pass: print the disassembly. | |
509 | ||
510 | Output format, from an MI perspective: | |
511 | The result is a ui_out list, field name "asm_insns", where elements have | |
512 | name "src_and_asm_line". | |
513 | Each element is a tuple of source line specs (field names line, file, | |
514 | fullname), and field "line_asm_insn" which contains the disassembly. | |
515 | Field "line_asm_insn" is a list of tuples: address, func-name, offset, | |
516 | opcodes, inst. | |
517 | ||
518 | CLI output works on top of this because MI ignores ui_out_text output, | |
519 | which is where we put file name and source line contents output. | |
520 | ||
521 | Cleanup usage: | |
522 | cleanups: | |
523 | For things created at the beginning of this function and need to be | |
524 | kept until the end of this function. | |
525 | ui_out_chain | |
526 | Handles the outer "asm_insns" list. | |
527 | ui_out_tuple_chain | |
528 | The tuples for each group of consecutive disassemblies. | |
529 | ui_out_list_chain | |
530 | List of consecutive source lines or disassembled insns. */ | |
531 | ||
532 | if (flags & DISASSEMBLY_FILENAME) | |
533 | psl_flags |= PRINT_SOURCE_LINES_FILENAME; | |
534 | ||
535 | ui_out_chain = make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); | |
536 | ||
537 | ui_out_tuple_chain = NULL; | |
538 | ui_out_list_chain = NULL; | |
539 | ||
540 | last_symtab = NULL; | |
541 | last_line = 0; | |
542 | pc = low; | |
543 | ||
544 | while (pc < high) | |
545 | { | |
546 | struct linetable_entry *le = NULL; | |
547 | struct symtab_and_line sal; | |
548 | CORE_ADDR end_pc; | |
549 | int start_preceding_line_to_display = 0; | |
550 | int end_preceding_line_to_display = 0; | |
551 | int new_source_line = 0; | |
552 | ||
553 | sal = find_pc_line (pc, 0); | |
554 | ||
555 | if (sal.symtab != last_symtab) | |
556 | { | |
557 | /* New source file. */ | |
558 | new_source_line = 1; | |
559 | ||
560 | /* If this is the first line of output, check for any preceding | |
561 | lines. */ | |
562 | if (last_line == 0 | |
563 | && first_le != NULL | |
564 | && first_le->line < sal.line) | |
565 | { | |
566 | start_preceding_line_to_display = first_le->line; | |
567 | end_preceding_line_to_display = sal.line; | |
568 | } | |
569 | } | |
570 | else | |
571 | { | |
572 | /* Same source file as last time. */ | |
573 | if (sal.symtab != NULL) | |
574 | { | |
575 | if (sal.line > last_line + 1 && last_line != 0) | |
576 | { | |
577 | int l; | |
578 | ||
579 | /* Several preceding source lines. Print the trailing ones | |
580 | not associated with code that we'll print later. */ | |
581 | for (l = sal.line - 1; l > last_line; --l) | |
582 | { | |
583 | if (line_has_code_p (dis_line_table, sal.symtab, l)) | |
584 | break; | |
585 | } | |
586 | if (l < sal.line - 1) | |
587 | { | |
588 | start_preceding_line_to_display = l + 1; | |
589 | end_preceding_line_to_display = sal.line; | |
590 | } | |
591 | } | |
592 | if (sal.line != last_line) | |
593 | new_source_line = 1; | |
594 | else | |
595 | { | |
596 | /* Same source line as last time. This can happen, depending | |
597 | on the debug info. */ | |
598 | } | |
599 | } | |
600 | } | |
601 | ||
602 | if (new_source_line) | |
603 | { | |
604 | /* Skip the newline if this is the first instruction. */ | |
605 | if (pc > low) | |
606 | ui_out_text (uiout, "\n"); | |
607 | if (ui_out_tuple_chain != NULL) | |
608 | { | |
609 | gdb_assert (ui_out_list_chain != NULL); | |
610 | do_cleanups (ui_out_list_chain); | |
611 | do_cleanups (ui_out_tuple_chain); | |
612 | } | |
613 | if (sal.symtab != last_symtab | |
614 | && !(flags & DISASSEMBLY_FILENAME)) | |
615 | { | |
616 | /* Remember MI ignores ui_out_text. | |
617 | We don't have to do anything here for MI because MI | |
618 | output includes the source specs for each line. */ | |
619 | if (sal.symtab != NULL) | |
620 | { | |
621 | ui_out_text (uiout, | |
622 | symtab_to_filename_for_display (sal.symtab)); | |
623 | } | |
624 | else | |
625 | ui_out_text (uiout, "unknown"); | |
626 | ui_out_text (uiout, ":\n"); | |
627 | } | |
628 | if (start_preceding_line_to_display > 0) | |
629 | { | |
630 | /* Several source lines w/o asm instructions associated. | |
631 | We need to preserve the structure of the output, so output | |
632 | a bunch of line tuples with no asm entries. */ | |
633 | int l; | |
634 | struct cleanup *ui_out_list_chain_line; | |
635 | struct cleanup *ui_out_tuple_chain_line; | |
636 | ||
637 | gdb_assert (sal.symtab != NULL); | |
638 | for (l = start_preceding_line_to_display; | |
639 | l < end_preceding_line_to_display; | |
640 | ++l) | |
641 | { | |
642 | ui_out_tuple_chain_line | |
643 | = make_cleanup_ui_out_tuple_begin_end (uiout, | |
644 | "src_and_asm_line"); | |
645 | print_source_lines (sal.symtab, l, l + 1, psl_flags); | |
646 | ui_out_list_chain_line | |
647 | = make_cleanup_ui_out_list_begin_end (uiout, | |
648 | "line_asm_insn"); | |
649 | do_cleanups (ui_out_list_chain_line); | |
650 | do_cleanups (ui_out_tuple_chain_line); | |
651 | } | |
652 | } | |
653 | ui_out_tuple_chain | |
654 | = make_cleanup_ui_out_tuple_begin_end (uiout, "src_and_asm_line"); | |
655 | if (sal.symtab != NULL) | |
656 | print_source_lines (sal.symtab, sal.line, sal.line + 1, psl_flags); | |
657 | else | |
658 | ui_out_text (uiout, _("--- no source info for this pc ---\n")); | |
659 | ui_out_list_chain | |
660 | = make_cleanup_ui_out_list_begin_end (uiout, "line_asm_insn"); | |
661 | } | |
662 | else | |
663 | { | |
664 | /* Here we're appending instructions to an existing line. | |
665 | By construction the very first insn will have a symtab | |
666 | and follow the new_source_line path above. */ | |
667 | gdb_assert (ui_out_tuple_chain != NULL); | |
668 | gdb_assert (ui_out_list_chain != NULL); | |
669 | } | |
670 | ||
671 | if (sal.end != 0) | |
672 | end_pc = min (sal.end, high); | |
673 | else | |
674 | end_pc = pc + 1; | |
675 | num_displayed += dump_insns (gdbarch, uiout, di, pc, end_pc, | |
676 | how_many, flags, stb, &end_pc); | |
677 | pc = end_pc; | |
678 | ||
679 | if (how_many >= 0 && num_displayed >= how_many) | |
680 | break; | |
681 | ||
682 | last_symtab = sal.symtab; | |
683 | last_line = sal.line; | |
684 | } | |
685 | ||
686 | do_cleanups (ui_out_chain); | |
687 | do_cleanups (cleanups); | |
688 | } | |
92df71f0 FN |
689 | |
690 | static void | |
13274fc3 UW |
691 | do_assembly_only (struct gdbarch *gdbarch, struct ui_out *uiout, |
692 | struct disassemble_info * di, | |
92df71f0 | 693 | CORE_ADDR low, CORE_ADDR high, |
f99d8bf4 | 694 | int how_many, int flags, struct ui_file *stb) |
92df71f0 FN |
695 | { |
696 | int num_displayed = 0; | |
3b31d625 | 697 | struct cleanup *ui_out_chain; |
92df71f0 | 698 | |
3b31d625 | 699 | ui_out_chain = make_cleanup_ui_out_list_begin_end (uiout, "asm_insns"); |
92df71f0 | 700 | |
e6158f16 | 701 | num_displayed = dump_insns (gdbarch, uiout, di, low, high, how_many, |
6ff0ba5f | 702 | flags, stb, NULL); |
92df71f0 | 703 | |
3b31d625 | 704 | do_cleanups (ui_out_chain); |
92df71f0 FN |
705 | } |
706 | ||
92bf2b80 AC |
707 | /* Initialize the disassemble info struct ready for the specified |
708 | stream. */ | |
709 | ||
a0b31db1 | 710 | static int ATTRIBUTE_PRINTF (2, 3) |
242e8be5 AC |
711 | fprintf_disasm (void *stream, const char *format, ...) |
712 | { | |
713 | va_list args; | |
9a619af0 | 714 | |
242e8be5 | 715 | va_start (args, format); |
9a3c8263 | 716 | vfprintf_filtered ((struct ui_file *) stream, format, args); |
242e8be5 AC |
717 | va_end (args); |
718 | /* Something non -ve. */ | |
719 | return 0; | |
720 | } | |
721 | ||
ed3ef339 | 722 | struct disassemble_info |
92bf2b80 | 723 | gdb_disassemble_info (struct gdbarch *gdbarch, struct ui_file *file) |
92df71f0 | 724 | { |
a89aa300 | 725 | struct disassemble_info di; |
9a619af0 | 726 | |
242e8be5 | 727 | init_disassemble_info (&di, file, fprintf_disasm); |
2b6fd0d8 AC |
728 | di.flavour = bfd_target_unknown_flavour; |
729 | di.memory_error_func = dis_asm_memory_error; | |
730 | di.print_address_func = dis_asm_print_address; | |
731 | /* NOTE: cagney/2003-04-28: The original code, from the old Insight | |
732 | disassembler had a local optomization here. By default it would | |
733 | access the executable file, instead of the target memory (there | |
ce2826aa | 734 | was a growing list of exceptions though). Unfortunately, the |
2b6fd0d8 AC |
735 | heuristic was flawed. Commands like "disassemble &variable" |
736 | didn't work as they relied on the access going to the target. | |
737 | Further, it has been supperseeded by trust-read-only-sections | |
738 | (although that should be superseeded by target_trust..._p()). */ | |
739 | di.read_memory_func = dis_asm_read_memory; | |
22b0d388 | 740 | di.arch = gdbarch_bfd_arch_info (gdbarch)->arch; |
92bf2b80 AC |
741 | di.mach = gdbarch_bfd_arch_info (gdbarch)->mach; |
742 | di.endian = gdbarch_byte_order (gdbarch); | |
9d4fde75 | 743 | di.endian_code = gdbarch_byte_order_for_code (gdbarch); |
5af949e3 | 744 | di.application_data = gdbarch; |
2877b4cc | 745 | disassemble_init_for_target (&di); |
92bf2b80 AC |
746 | return di; |
747 | } | |
748 | ||
749 | void | |
13274fc3 | 750 | gdb_disassembly (struct gdbarch *gdbarch, struct ui_out *uiout, |
9c419145 PP |
751 | char *file_string, int flags, int how_many, |
752 | CORE_ADDR low, CORE_ADDR high) | |
92bf2b80 | 753 | { |
f99d8bf4 PA |
754 | struct ui_file *stb = mem_fileopen (); |
755 | struct cleanup *cleanups = make_cleanup_ui_file_delete (stb); | |
756 | struct disassemble_info di = gdb_disassemble_info (gdbarch, stb); | |
34248c3a | 757 | struct symtab *symtab; |
92bf2b80 AC |
758 | struct linetable_entry *le = NULL; |
759 | int nlines = -1; | |
92df71f0 | 760 | |
0963b4bd | 761 | /* Assume symtab is valid for whole PC range. */ |
34248c3a | 762 | symtab = find_pc_line_symtab (low); |
92df71f0 | 763 | |
8435453b | 764 | if (symtab != NULL && SYMTAB_LINETABLE (symtab) != NULL) |
6ff0ba5f | 765 | nlines = SYMTAB_LINETABLE (symtab)->nitems; |
92df71f0 | 766 | |
6ff0ba5f DE |
767 | if (!(flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE)) |
768 | || nlines <= 0) | |
e6158f16 | 769 | do_assembly_only (gdbarch, uiout, &di, low, high, how_many, flags, stb); |
92df71f0 | 770 | |
e6158f16 | 771 | else if (flags & DISASSEMBLY_SOURCE) |
6ff0ba5f DE |
772 | do_mixed_source_and_assembly (gdbarch, uiout, &di, symtab, low, high, |
773 | how_many, flags, stb); | |
774 | ||
775 | else if (flags & DISASSEMBLY_SOURCE_DEPRECATED) | |
776 | do_mixed_source_and_assembly_deprecated (gdbarch, uiout, &di, symtab, | |
777 | low, high, how_many, flags, stb); | |
92df71f0 | 778 | |
2b6fd0d8 | 779 | do_cleanups (cleanups); |
92df71f0 FN |
780 | gdb_flush (gdb_stdout); |
781 | } | |
810ecf9f | 782 | |
92bf2b80 | 783 | /* Print the instruction at address MEMADDR in debugged memory, |
a4642986 MR |
784 | on STREAM. Returns the length of the instruction, in bytes, |
785 | and, if requested, the number of branch delay slot instructions. */ | |
92bf2b80 AC |
786 | |
787 | int | |
13274fc3 UW |
788 | gdb_print_insn (struct gdbarch *gdbarch, CORE_ADDR memaddr, |
789 | struct ui_file *stream, int *branch_delay_insns) | |
92bf2b80 | 790 | { |
a4642986 MR |
791 | struct disassemble_info di; |
792 | int length; | |
793 | ||
13274fc3 UW |
794 | di = gdb_disassemble_info (gdbarch, stream); |
795 | length = gdbarch_print_insn (gdbarch, memaddr, &di); | |
a4642986 MR |
796 | if (branch_delay_insns) |
797 | { | |
798 | if (di.insn_info_valid) | |
799 | *branch_delay_insns = di.branch_delay_insns; | |
800 | else | |
801 | *branch_delay_insns = 0; | |
802 | } | |
803 | return length; | |
92bf2b80 | 804 | } |
eda5a4d7 PA |
805 | |
806 | static void | |
807 | do_ui_file_delete (void *arg) | |
808 | { | |
9a3c8263 | 809 | ui_file_delete ((struct ui_file *) arg); |
eda5a4d7 PA |
810 | } |
811 | ||
812 | /* Return the length in bytes of the instruction at address MEMADDR in | |
813 | debugged memory. */ | |
814 | ||
815 | int | |
816 | gdb_insn_length (struct gdbarch *gdbarch, CORE_ADDR addr) | |
817 | { | |
818 | static struct ui_file *null_stream = NULL; | |
819 | ||
820 | /* Dummy file descriptor for the disassembler. */ | |
821 | if (!null_stream) | |
822 | { | |
823 | null_stream = ui_file_new (); | |
824 | make_final_cleanup (do_ui_file_delete, null_stream); | |
825 | } | |
826 | ||
827 | return gdb_print_insn (gdbarch, addr, null_stream, NULL); | |
828 | } | |
829 | ||
830 | /* fprintf-function for gdb_buffered_insn_length. This function is a | |
831 | nop, we don't want to print anything, we just want to compute the | |
832 | length of the insn. */ | |
833 | ||
834 | static int ATTRIBUTE_PRINTF (2, 3) | |
835 | gdb_buffered_insn_length_fprintf (void *stream, const char *format, ...) | |
836 | { | |
837 | return 0; | |
838 | } | |
839 | ||
840 | /* Initialize a struct disassemble_info for gdb_buffered_insn_length. */ | |
841 | ||
842 | static void | |
843 | gdb_buffered_insn_length_init_dis (struct gdbarch *gdbarch, | |
844 | struct disassemble_info *di, | |
845 | const gdb_byte *insn, int max_len, | |
846 | CORE_ADDR addr) | |
847 | { | |
848 | init_disassemble_info (di, NULL, gdb_buffered_insn_length_fprintf); | |
849 | ||
850 | /* init_disassemble_info installs buffer_read_memory, etc. | |
851 | so we don't need to do that here. | |
852 | The cast is necessary until disassemble_info is const-ified. */ | |
853 | di->buffer = (gdb_byte *) insn; | |
854 | di->buffer_length = max_len; | |
855 | di->buffer_vma = addr; | |
856 | ||
857 | di->arch = gdbarch_bfd_arch_info (gdbarch)->arch; | |
858 | di->mach = gdbarch_bfd_arch_info (gdbarch)->mach; | |
859 | di->endian = gdbarch_byte_order (gdbarch); | |
860 | di->endian_code = gdbarch_byte_order_for_code (gdbarch); | |
861 | ||
862 | disassemble_init_for_target (di); | |
863 | } | |
864 | ||
865 | /* Return the length in bytes of INSN. MAX_LEN is the size of the | |
866 | buffer containing INSN. */ | |
867 | ||
868 | int | |
869 | gdb_buffered_insn_length (struct gdbarch *gdbarch, | |
870 | const gdb_byte *insn, int max_len, CORE_ADDR addr) | |
871 | { | |
872 | struct disassemble_info di; | |
873 | ||
874 | gdb_buffered_insn_length_init_dis (gdbarch, &di, insn, max_len, addr); | |
875 | ||
876 | return gdbarch_print_insn (gdbarch, addr, &di); | |
877 | } |