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54cfded0 | 1 | /* dw2gencfi.c - Support for generating Dwarf2 CFI information. |
6f2750fe | 2 | Copyright (C) 2003-2016 Free Software Foundation, Inc. |
54cfded0 AM |
3 | Contributed by Michal Ludvig <mludvig@suse.cz> |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
54cfded0 AM |
10 | any later version. |
11 | ||
12 | GAS 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 | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
54cfded0 | 21 | |
54cfded0 AM |
22 | #include "as.h" |
23 | #include "dw2gencfi.h" | |
ae424f82 | 24 | #include "subsegs.h" |
38462edf | 25 | #include "dwarf2dbg.h" |
54cfded0 | 26 | |
0a7b15ff | 27 | #ifdef TARGET_USE_CFIPOP |
a4447b93 | 28 | |
3dd24306 DA |
29 | /* By default, use difference expressions if DIFF_EXPR_OK is defined. */ |
30 | #ifndef CFI_DIFF_EXPR_OK | |
31 | # ifdef DIFF_EXPR_OK | |
32 | # define CFI_DIFF_EXPR_OK 1 | |
33 | # else | |
34 | # define CFI_DIFF_EXPR_OK 0 | |
35 | # endif | |
36 | #endif | |
37 | ||
2c678708 | 38 | #ifndef CFI_DIFF_LSDA_OK |
72b016b4 | 39 | #define CFI_DIFF_LSDA_OK CFI_DIFF_EXPR_OK |
2c678708 MK |
40 | #endif |
41 | ||
42 | #if CFI_DIFF_EXPR_OK == 1 && CFI_DIFF_LSDA_OK == 0 | |
43 | # error "CFI_DIFF_EXPR_OK should imply CFI_DIFF_LSDA_OK" | |
44 | #endif | |
45 | ||
a4447b93 RH |
46 | /* We re-use DWARF2_LINE_MIN_INSN_LENGTH for the code alignment field |
47 | of the CIE. Default to 1 if not otherwise specified. */ | |
72b016b4 NC |
48 | #ifndef DWARF2_LINE_MIN_INSN_LENGTH |
49 | #define DWARF2_LINE_MIN_INSN_LENGTH 1 | |
a4447b93 RH |
50 | #endif |
51 | ||
8c9b70b1 RH |
52 | /* By default, use 32-bit relocations from .eh_frame into .text. */ |
53 | #ifndef DWARF2_FDE_RELOC_SIZE | |
72b016b4 | 54 | #define DWARF2_FDE_RELOC_SIZE 4 |
8c9b70b1 RH |
55 | #endif |
56 | ||
57 | /* By default, use a read-only .eh_frame section. */ | |
58 | #ifndef DWARF2_EH_FRAME_READ_ONLY | |
72b016b4 | 59 | #define DWARF2_EH_FRAME_READ_ONLY SEC_READONLY |
8c9b70b1 RH |
60 | #endif |
61 | ||
9393cb0d | 62 | #ifndef EH_FRAME_ALIGNMENT |
72b016b4 | 63 | #define EH_FRAME_ALIGNMENT (bfd_get_arch_size (stdoutput) == 64 ? 3 : 2) |
9393cb0d JJ |
64 | #endif |
65 | ||
a4447b93 | 66 | #ifndef tc_cfi_frame_initial_instructions |
72b016b4 | 67 | #define tc_cfi_frame_initial_instructions() ((void)0) |
a4447b93 RH |
68 | #endif |
69 | ||
1bce6bd8 PB |
70 | #ifndef tc_cfi_startproc |
71 | # define tc_cfi_startproc() ((void)0) | |
72 | #endif | |
73 | ||
74 | #ifndef tc_cfi_endproc | |
6e789b26 | 75 | # define tc_cfi_endproc(fde) ((void) (fde)) |
1bce6bd8 PB |
76 | #endif |
77 | ||
2f0c68f2 CM |
78 | #define EH_FRAME_LINKONCE (SUPPORT_FRAME_LINKONCE || compact_eh) |
79 | ||
38462edf | 80 | #ifndef DWARF2_FORMAT |
72b016b4 | 81 | #define DWARF2_FORMAT(SEC) dwarf2_format_32bit |
38462edf JJ |
82 | #endif |
83 | ||
f1c4cc75 | 84 | #ifndef DWARF2_ADDR_SIZE |
72b016b4 | 85 | #define DWARF2_ADDR_SIZE(bfd) (bfd_arch_bits_per_address (bfd) / 8) |
f1c4cc75 RH |
86 | #endif |
87 | ||
2f0c68f2 | 88 | #if MULTIPLE_FRAME_SECTIONS |
6303c4ae | 89 | #define CUR_SEG(structp) structp->cur_seg |
34bca508 | 90 | #define SET_CUR_SEG(structp, seg) structp->cur_seg = seg |
6303c4ae AM |
91 | #define HANDLED(structp) structp->handled |
92 | #define SET_HANDLED(structp, val) structp->handled = val | |
93 | #else | |
94 | #define CUR_SEG(structp) NULL | |
95 | #define SET_CUR_SEG(structp, seg) (void) (0 && seg) | |
96 | #define HANDLED(structp) 0 | |
97 | #define SET_HANDLED(structp, val) (void) (0 && val) | |
98 | #endif | |
99 | ||
2f0c68f2 CM |
100 | #ifndef tc_cfi_reloc_for_encoding |
101 | #define tc_cfi_reloc_for_encoding(e) BFD_RELOC_NONE | |
102 | #endif | |
103 | ||
72b016b4 NC |
104 | /* Private segment collection list. */ |
105 | struct dwcfi_seg_list | |
106 | { | |
107 | segT seg; | |
108 | int subseg; | |
109 | char * seg_name; | |
110 | }; | |
111 | ||
2f0c68f2 CM |
112 | #ifdef SUPPORT_COMPACT_EH |
113 | static bfd_boolean compact_eh; | |
114 | #else | |
115 | #define compact_eh 0 | |
116 | #endif | |
72b016b4 NC |
117 | |
118 | static struct hash_control *dwcfi_hash; | |
2f0c68f2 CM |
119 | \f |
120 | /* Emit a single byte into the current segment. */ | |
121 | ||
122 | static inline void | |
123 | out_one (int byte) | |
124 | { | |
125 | FRAG_APPEND_1_CHAR (byte); | |
126 | } | |
127 | ||
128 | /* Emit a two-byte word into the current segment. */ | |
129 | ||
130 | static inline void | |
131 | out_two (int data) | |
132 | { | |
133 | md_number_to_chars (frag_more (2), data, 2); | |
134 | } | |
135 | ||
136 | /* Emit a four byte word into the current segment. */ | |
137 | ||
138 | static inline void | |
139 | out_four (int data) | |
140 | { | |
141 | md_number_to_chars (frag_more (4), data, 4); | |
142 | } | |
143 | ||
144 | /* Emit an unsigned "little-endian base 128" number. */ | |
145 | ||
146 | static void | |
147 | out_uleb128 (addressT value) | |
148 | { | |
149 | output_leb128 (frag_more (sizeof_leb128 (value, 0)), value, 0); | |
150 | } | |
151 | ||
152 | /* Emit an unsigned "little-endian base 128" number. */ | |
153 | ||
154 | static void | |
155 | out_sleb128 (offsetT value) | |
156 | { | |
157 | output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1); | |
158 | } | |
159 | ||
160 | static offsetT | |
161 | encoding_size (unsigned char encoding) | |
162 | { | |
163 | if (encoding == DW_EH_PE_omit) | |
164 | return 0; | |
165 | switch (encoding & 0x7) | |
166 | { | |
167 | case 0: | |
168 | return bfd_get_arch_size (stdoutput) == 64 ? 8 : 4; | |
169 | case DW_EH_PE_udata2: | |
170 | return 2; | |
171 | case DW_EH_PE_udata4: | |
172 | return 4; | |
173 | case DW_EH_PE_udata8: | |
174 | return 8; | |
175 | default: | |
176 | abort (); | |
177 | } | |
178 | } | |
179 | ||
180 | /* Emit expression EXP in ENCODING. If EMIT_ENCODING is true, first | |
181 | emit a byte containing ENCODING. */ | |
182 | ||
183 | static void | |
184 | emit_expr_encoded (expressionS *exp, int encoding, bfd_boolean emit_encoding) | |
185 | { | |
186 | offsetT size = encoding_size (encoding); | |
187 | bfd_reloc_code_real_type code; | |
188 | ||
189 | if (encoding == DW_EH_PE_omit) | |
190 | return; | |
72b016b4 | 191 | |
2f0c68f2 CM |
192 | if (emit_encoding) |
193 | out_one (encoding); | |
194 | ||
195 | code = tc_cfi_reloc_for_encoding (encoding); | |
196 | if (code != BFD_RELOC_NONE) | |
197 | { | |
198 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
199 | char *p = frag_more (size); | |
200 | md_number_to_chars (p, 0, size); | |
201 | fix_new (frag_now, p - frag_now->fr_literal, size, exp->X_add_symbol, | |
202 | exp->X_add_number, howto->pc_relative, code); | |
203 | } | |
204 | else if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
205 | { | |
206 | #if CFI_DIFF_EXPR_OK | |
207 | expressionS tmp = *exp; | |
208 | tmp.X_op = O_subtract; | |
209 | tmp.X_op_symbol = symbol_temp_new_now (); | |
210 | emit_expr (&tmp, size); | |
211 | #elif defined (tc_cfi_emit_pcrel_expr) | |
212 | tc_cfi_emit_pcrel_expr (exp, size); | |
213 | #else | |
214 | abort (); | |
215 | #endif | |
216 | } | |
217 | else | |
218 | emit_expr (exp, size); | |
219 | } | |
220 | \f | |
72b016b4 NC |
221 | /* Build based on segment the derived .debug_... |
222 | segment name containing origin segment's postfix name part. */ | |
223 | ||
224 | static char * | |
225 | get_debugseg_name (segT seg, const char *base_name) | |
226 | { | |
227 | const char *name; | |
228 | ||
229 | if (!seg) | |
230 | name = ""; | |
231 | else | |
232 | { | |
233 | const char * dollar; | |
234 | const char * dot; | |
235 | ||
236 | name = bfd_get_section_name (stdoutput, seg); | |
237 | ||
238 | dollar = strchr (name, '$'); | |
239 | dot = strchr (name + 1, '.'); | |
240 | ||
241 | if (!dollar && !dot) | |
2f0c68f2 CM |
242 | { |
243 | if (!strcmp (base_name, ".eh_frame_entry") | |
244 | && strcmp (name, ".text") != 0) | |
245 | return concat (base_name, ".", name, NULL); | |
246 | ||
247 | name = ""; | |
248 | } | |
72b016b4 NC |
249 | else if (!dollar) |
250 | name = dot; | |
251 | else if (!dot) | |
252 | name = dollar; | |
253 | else if (dot < dollar) | |
254 | name = dot; | |
255 | else | |
256 | name = dollar; | |
257 | } | |
258 | ||
259 | return concat (base_name, name, NULL); | |
260 | } | |
261 | ||
262 | /* Allocate a dwcfi_seg_list structure. */ | |
263 | ||
264 | static struct dwcfi_seg_list * | |
265 | alloc_debugseg_item (segT seg, int subseg, char *name) | |
266 | { | |
267 | struct dwcfi_seg_list *r; | |
268 | ||
269 | r = (struct dwcfi_seg_list *) | |
270 | xmalloc (sizeof (struct dwcfi_seg_list) + strlen (name)); | |
271 | r->seg = seg; | |
272 | r->subseg = subseg; | |
273 | r->seg_name = name; | |
274 | return r; | |
275 | } | |
276 | ||
277 | static segT | |
278 | is_now_linkonce_segment (void) | |
279 | { | |
2f0c68f2 CM |
280 | if (compact_eh) |
281 | return now_seg; | |
282 | ||
72b016b4 NC |
283 | if ((bfd_get_section_flags (stdoutput, now_seg) |
284 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
285 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE | |
286 | | SEC_LINK_DUPLICATES_SAME_CONTENTS)) != 0) | |
287 | return now_seg; | |
72b016b4 NC |
288 | return NULL; |
289 | } | |
290 | ||
291 | /* Generate debug... segment with same linkonce properties | |
292 | of based segment. */ | |
293 | ||
294 | static segT | |
295 | make_debug_seg (segT cseg, char *name, int sflags) | |
296 | { | |
297 | segT save_seg = now_seg; | |
298 | int save_subseg = now_subseg; | |
299 | segT r; | |
300 | flagword flags; | |
301 | ||
302 | r = subseg_new (name, 0); | |
303 | ||
304 | /* Check if code segment is marked as linked once. */ | |
305 | if (!cseg) | |
306 | flags = 0; | |
307 | else | |
308 | flags = bfd_get_section_flags (stdoutput, cseg) | |
309 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
83e12deb MR |
310 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE |
311 | | SEC_LINK_DUPLICATES_SAME_CONTENTS); | |
72b016b4 NC |
312 | |
313 | /* Add standard section flags. */ | |
314 | flags |= sflags; | |
315 | ||
316 | /* Apply possibly linked once flags to new generated segment, too. */ | |
317 | if (!bfd_set_section_flags (stdoutput, r, flags)) | |
318 | as_bad (_("bfd_set_section_flags: %s"), | |
319 | bfd_errmsg (bfd_get_error ())); | |
320 | ||
321 | /* Restore to previous segment. */ | |
322 | if (save_seg != NULL) | |
323 | subseg_set (save_seg, save_subseg); | |
324 | return r; | |
325 | } | |
326 | ||
327 | static void | |
328 | dwcfi_hash_insert (const char *name, struct dwcfi_seg_list *item) | |
329 | { | |
330 | const char *error_string; | |
331 | ||
332 | if ((error_string = hash_jam (dwcfi_hash, name, (char *) item))) | |
333 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), | |
334 | name, error_string); | |
335 | } | |
336 | ||
337 | static struct dwcfi_seg_list * | |
338 | dwcfi_hash_find (char *name) | |
339 | { | |
340 | return (struct dwcfi_seg_list *) hash_find (dwcfi_hash, name); | |
341 | } | |
342 | ||
343 | static struct dwcfi_seg_list * | |
344 | dwcfi_hash_find_or_make (segT cseg, const char *base_name, int flags) | |
345 | { | |
346 | struct dwcfi_seg_list *item; | |
347 | char *name; | |
348 | ||
349 | /* Initialize dwcfi_hash once. */ | |
350 | if (!dwcfi_hash) | |
351 | dwcfi_hash = hash_new (); | |
352 | ||
353 | name = get_debugseg_name (cseg, base_name); | |
354 | ||
355 | item = dwcfi_hash_find (name); | |
356 | if (!item) | |
357 | { | |
358 | item = alloc_debugseg_item (make_debug_seg (cseg, name, flags), 0, name); | |
359 | ||
360 | dwcfi_hash_insert (item->seg_name, item); | |
361 | } | |
362 | else | |
363 | free (name); | |
364 | ||
365 | return item; | |
366 | } | |
367 | ||
3251495b RH |
368 | /* ??? Share this with dwarf2cfg.c. */ |
369 | #ifndef TC_DWARF2_EMIT_OFFSET | |
370 | #define TC_DWARF2_EMIT_OFFSET generic_dwarf2_emit_offset | |
371 | ||
372 | /* Create an offset to .dwarf2_*. */ | |
373 | ||
374 | static void | |
375 | generic_dwarf2_emit_offset (symbolS *symbol, unsigned int size) | |
376 | { | |
377 | expressionS exp; | |
378 | ||
379 | exp.X_op = O_symbol; | |
380 | exp.X_add_symbol = symbol; | |
381 | exp.X_add_number = 0; | |
382 | emit_expr (&exp, size); | |
383 | } | |
384 | #endif | |
385 | ||
72b016b4 NC |
386 | struct cfi_escape_data |
387 | { | |
1e9cc1c2 NC |
388 | struct cfi_escape_data *next; |
389 | expressionS exp; | |
390 | }; | |
a4447b93 | 391 | |
a4447b93 | 392 | struct cie_entry |
39b82151 | 393 | { |
a4447b93 | 394 | struct cie_entry *next; |
2f0c68f2 | 395 | #if MULTIPLE_FRAME_SECTIONS |
72b016b4 | 396 | segT cur_seg; |
67ed7401 | 397 | #endif |
a4447b93 RH |
398 | symbolS *start_address; |
399 | unsigned int return_column; | |
63752a75 | 400 | unsigned int signal_frame; |
2f0c68f2 | 401 | unsigned char fde_encoding; |
9b8ae42e JJ |
402 | unsigned char per_encoding; |
403 | unsigned char lsda_encoding; | |
404 | expressionS personality; | |
a4447b93 | 405 | struct cfi_insn_data *first, *last; |
39b82151 ML |
406 | }; |
407 | ||
a4447b93 | 408 | /* List of FDE entries. */ |
72b016b4 | 409 | |
af385746 | 410 | struct fde_entry *all_fde_data; |
a4447b93 | 411 | static struct fde_entry **last_fde_data = &all_fde_data; |
39b82151 ML |
412 | |
413 | /* List of CIEs so that they could be reused. */ | |
414 | static struct cie_entry *cie_root; | |
415 | ||
fa87b337 RH |
416 | /* Stack of old CFI data, for save/restore. */ |
417 | struct cfa_save_data | |
418 | { | |
419 | struct cfa_save_data *next; | |
420 | offsetT cfa_offset; | |
421 | }; | |
422 | ||
ae424f82 JJ |
423 | /* Current open FDE entry. */ |
424 | struct frch_cfi_data | |
425 | { | |
426 | struct fde_entry *cur_fde_data; | |
427 | symbolS *last_address; | |
428 | offsetT cur_cfa_offset; | |
429 | struct cfa_save_data *cfa_save_stack; | |
430 | }; | |
a4447b93 RH |
431 | \f |
432 | /* Construct a new FDE structure and add it to the end of the fde list. */ | |
54cfded0 | 433 | |
a4447b93 RH |
434 | static struct fde_entry * |
435 | alloc_fde_entry (void) | |
436 | { | |
add39d23 | 437 | struct fde_entry *fde = XCNEW (struct fde_entry); |
54cfded0 | 438 | |
add39d23 | 439 | frchain_now->frch_cfi_data = XCNEW (struct frch_cfi_data); |
ae424f82 | 440 | frchain_now->frch_cfi_data->cur_fde_data = fde; |
a4447b93 RH |
441 | *last_fde_data = fde; |
442 | last_fde_data = &fde->next; | |
6303c4ae AM |
443 | SET_CUR_SEG (fde, is_now_linkonce_segment ()); |
444 | SET_HANDLED (fde, 0); | |
a4447b93 RH |
445 | fde->last = &fde->data; |
446 | fde->return_column = DWARF2_DEFAULT_RETURN_COLUMN; | |
9b8ae42e JJ |
447 | fde->per_encoding = DW_EH_PE_omit; |
448 | fde->lsda_encoding = DW_EH_PE_omit; | |
2f0c68f2 | 449 | fde->eh_header_type = EH_COMPACT_UNKNOWN; |
a4447b93 RH |
450 | |
451 | return fde; | |
452 | } | |
453 | ||
454 | /* The following functions are available for a backend to construct its | |
455 | own unwind information, usually from legacy unwind directives. */ | |
456 | ||
457 | /* Construct a new INSN structure and add it to the end of the insn list | |
458 | for the currently active FDE. */ | |
459 | ||
2f0c68f2 CM |
460 | static bfd_boolean cfi_sections_set = FALSE; |
461 | static int cfi_sections = CFI_EMIT_eh_frame; | |
462 | int all_cfi_sections = 0; | |
463 | static struct fde_entry *last_fde; | |
464 | ||
a4447b93 RH |
465 | static struct cfi_insn_data * |
466 | alloc_cfi_insn_data (void) | |
54cfded0 | 467 | { |
add39d23 | 468 | struct cfi_insn_data *insn = XCNEW (struct cfi_insn_data); |
ae424f82 | 469 | struct fde_entry *cur_fde_data = frchain_now->frch_cfi_data->cur_fde_data; |
a4447b93 RH |
470 | |
471 | *cur_fde_data->last = insn; | |
472 | cur_fde_data->last = &insn->next; | |
6303c4ae | 473 | SET_CUR_SEG (insn, is_now_linkonce_segment ()); |
a4447b93 | 474 | return insn; |
54cfded0 AM |
475 | } |
476 | ||
a4447b93 RH |
477 | /* Construct a new FDE structure that begins at LABEL. */ |
478 | ||
72b016b4 | 479 | void |
a4447b93 | 480 | cfi_new_fde (symbolS *label) |
54cfded0 | 481 | { |
a4447b93 RH |
482 | struct fde_entry *fde = alloc_fde_entry (); |
483 | fde->start_address = label; | |
ae424f82 | 484 | frchain_now->frch_cfi_data->last_address = label; |
54cfded0 AM |
485 | } |
486 | ||
a4447b93 RH |
487 | /* End the currently open FDE. */ |
488 | ||
72b016b4 | 489 | void |
a4447b93 | 490 | cfi_end_fde (symbolS *label) |
54cfded0 | 491 | { |
ae424f82 JJ |
492 | frchain_now->frch_cfi_data->cur_fde_data->end_address = label; |
493 | free (frchain_now->frch_cfi_data); | |
494 | frchain_now->frch_cfi_data = NULL; | |
54cfded0 AM |
495 | } |
496 | ||
a4447b93 RH |
497 | /* Set the return column for the current FDE. */ |
498 | ||
499 | void | |
500 | cfi_set_return_column (unsigned regno) | |
54cfded0 | 501 | { |
ae424f82 | 502 | frchain_now->frch_cfi_data->cur_fde_data->return_column = regno; |
a4447b93 | 503 | } |
54cfded0 | 504 | |
2f0c68f2 CM |
505 | void |
506 | cfi_set_sections (void) | |
507 | { | |
508 | frchain_now->frch_cfi_data->cur_fde_data->sections = all_cfi_sections; | |
bd5608dc | 509 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
510 | } |
511 | ||
2be24b54 ML |
512 | /* Universal functions to store new instructions. */ |
513 | ||
514 | static void | |
72b016b4 | 515 | cfi_add_CFA_insn (int insn) |
2be24b54 ML |
516 | { |
517 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
518 | ||
519 | insn_ptr->insn = insn; | |
520 | } | |
521 | ||
522 | static void | |
523 | cfi_add_CFA_insn_reg (int insn, unsigned regno) | |
524 | { | |
525 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
526 | ||
527 | insn_ptr->insn = insn; | |
528 | insn_ptr->u.r = regno; | |
529 | } | |
530 | ||
531 | static void | |
532 | cfi_add_CFA_insn_offset (int insn, offsetT offset) | |
533 | { | |
534 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
535 | ||
536 | insn_ptr->insn = insn; | |
537 | insn_ptr->u.i = offset; | |
538 | } | |
539 | ||
540 | static void | |
541 | cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2) | |
542 | { | |
543 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
544 | ||
545 | insn_ptr->insn = insn; | |
546 | insn_ptr->u.rr.reg1 = reg1; | |
547 | insn_ptr->u.rr.reg2 = reg2; | |
548 | } | |
549 | ||
550 | static void | |
551 | cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset) | |
552 | { | |
553 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
554 | ||
555 | insn_ptr->insn = insn; | |
556 | insn_ptr->u.ri.reg = regno; | |
557 | insn_ptr->u.ri.offset = offset; | |
558 | } | |
559 | ||
a4447b93 | 560 | /* Add a CFI insn to advance the PC from the last address to LABEL. */ |
54cfded0 | 561 | |
a4447b93 RH |
562 | void |
563 | cfi_add_advance_loc (symbolS *label) | |
564 | { | |
565 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
7c0295b1 | 566 | |
a4447b93 | 567 | insn->insn = DW_CFA_advance_loc; |
ae424f82 | 568 | insn->u.ll.lab1 = frchain_now->frch_cfi_data->last_address; |
a4447b93 | 569 | insn->u.ll.lab2 = label; |
54cfded0 | 570 | |
ae424f82 | 571 | frchain_now->frch_cfi_data->last_address = label; |
a4447b93 | 572 | } |
54cfded0 | 573 | |
69602580 JB |
574 | /* Add a CFI insn to label the current position in the CFI segment. */ |
575 | ||
576 | void | |
577 | cfi_add_label (const char *name) | |
578 | { | |
579 | unsigned int len = strlen (name) + 1; | |
580 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
581 | ||
582 | insn->insn = CFI_label; | |
583 | obstack_grow (¬es, name, len); | |
584 | insn->u.sym_name = (char *) obstack_finish (¬es); | |
585 | } | |
586 | ||
a4447b93 RH |
587 | /* Add a DW_CFA_offset record to the CFI data. */ |
588 | ||
589 | void | |
590 | cfi_add_CFA_offset (unsigned regno, offsetT offset) | |
591 | { | |
fa87b337 RH |
592 | unsigned int abs_data_align; |
593 | ||
9c2799c2 | 594 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); |
2be24b54 | 595 | cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset); |
fa87b337 RH |
596 | |
597 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
598 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
599 | if (offset % abs_data_align) | |
600 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
a4447b93 | 601 | } |
54cfded0 | 602 | |
084303b8 AK |
603 | /* Add a DW_CFA_val_offset record to the CFI data. */ |
604 | ||
605 | void | |
606 | cfi_add_CFA_val_offset (unsigned regno, offsetT offset) | |
607 | { | |
608 | unsigned int abs_data_align; | |
609 | ||
610 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); | |
611 | cfi_add_CFA_insn_reg_offset (DW_CFA_val_offset, regno, offset); | |
612 | ||
613 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
614 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
615 | if (offset % abs_data_align) | |
616 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
617 | } | |
618 | ||
a4447b93 | 619 | /* Add a DW_CFA_def_cfa record to the CFI data. */ |
54cfded0 | 620 | |
a4447b93 RH |
621 | void |
622 | cfi_add_CFA_def_cfa (unsigned regno, offsetT offset) | |
623 | { | |
2be24b54 | 624 | cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset); |
ae424f82 | 625 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
54cfded0 AM |
626 | } |
627 | ||
a4447b93 RH |
628 | /* Add a DW_CFA_register record to the CFI data. */ |
629 | ||
630 | void | |
631 | cfi_add_CFA_register (unsigned reg1, unsigned reg2) | |
54cfded0 | 632 | { |
2be24b54 | 633 | cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2); |
54cfded0 AM |
634 | } |
635 | ||
a4447b93 RH |
636 | /* Add a DW_CFA_def_cfa_register record to the CFI data. */ |
637 | ||
638 | void | |
639 | cfi_add_CFA_def_cfa_register (unsigned regno) | |
54cfded0 | 640 | { |
2be24b54 | 641 | cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno); |
54cfded0 AM |
642 | } |
643 | ||
a4447b93 RH |
644 | /* Add a DW_CFA_def_cfa_offset record to the CFI data. */ |
645 | ||
54cfded0 | 646 | void |
a4447b93 | 647 | cfi_add_CFA_def_cfa_offset (offsetT offset) |
54cfded0 | 648 | { |
2be24b54 | 649 | cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset); |
ae424f82 | 650 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
a4447b93 | 651 | } |
54cfded0 | 652 | |
2be24b54 ML |
653 | void |
654 | cfi_add_CFA_restore (unsigned regno) | |
655 | { | |
656 | cfi_add_CFA_insn_reg (DW_CFA_restore, regno); | |
657 | } | |
658 | ||
659 | void | |
660 | cfi_add_CFA_undefined (unsigned regno) | |
661 | { | |
662 | cfi_add_CFA_insn_reg (DW_CFA_undefined, regno); | |
663 | } | |
664 | ||
665 | void | |
666 | cfi_add_CFA_same_value (unsigned regno) | |
667 | { | |
668 | cfi_add_CFA_insn_reg (DW_CFA_same_value, regno); | |
669 | } | |
670 | ||
671 | void | |
672 | cfi_add_CFA_remember_state (void) | |
673 | { | |
fa87b337 RH |
674 | struct cfa_save_data *p; |
675 | ||
2be24b54 | 676 | cfi_add_CFA_insn (DW_CFA_remember_state); |
fa87b337 | 677 | |
add39d23 | 678 | p = XNEW (struct cfa_save_data); |
ae424f82 JJ |
679 | p->cfa_offset = frchain_now->frch_cfi_data->cur_cfa_offset; |
680 | p->next = frchain_now->frch_cfi_data->cfa_save_stack; | |
681 | frchain_now->frch_cfi_data->cfa_save_stack = p; | |
2be24b54 ML |
682 | } |
683 | ||
684 | void | |
685 | cfi_add_CFA_restore_state (void) | |
686 | { | |
fa87b337 RH |
687 | struct cfa_save_data *p; |
688 | ||
2be24b54 | 689 | cfi_add_CFA_insn (DW_CFA_restore_state); |
fa87b337 | 690 | |
ae424f82 | 691 | p = frchain_now->frch_cfi_data->cfa_save_stack; |
fa87b337 RH |
692 | if (p) |
693 | { | |
ae424f82 JJ |
694 | frchain_now->frch_cfi_data->cur_cfa_offset = p->cfa_offset; |
695 | frchain_now->frch_cfi_data->cfa_save_stack = p->next; | |
fa87b337 RH |
696 | free (p); |
697 | } | |
289040ca NC |
698 | else |
699 | as_bad (_("CFI state restore without previous remember")); | |
2be24b54 ML |
700 | } |
701 | ||
a4447b93 RH |
702 | \f |
703 | /* Parse CFI assembler directives. */ | |
54cfded0 | 704 | |
a4447b93 | 705 | static void dot_cfi (int); |
cdfbf930 | 706 | static void dot_cfi_escape (int); |
38462edf | 707 | static void dot_cfi_sections (int); |
a4447b93 RH |
708 | static void dot_cfi_startproc (int); |
709 | static void dot_cfi_endproc (int); | |
2f0c68f2 | 710 | static void dot_cfi_fde_data (int); |
9b8ae42e | 711 | static void dot_cfi_personality (int); |
2f0c68f2 | 712 | static void dot_cfi_personality_id (int); |
9b8ae42e | 713 | static void dot_cfi_lsda (int); |
f1c4cc75 | 714 | static void dot_cfi_val_encoded_addr (int); |
2f0c68f2 | 715 | static void dot_cfi_inline_lsda (int); |
69602580 | 716 | static void dot_cfi_label (int); |
54cfded0 | 717 | |
a4447b93 RH |
718 | const pseudo_typeS cfi_pseudo_table[] = |
719 | { | |
38462edf | 720 | { "cfi_sections", dot_cfi_sections, 0 }, |
a4447b93 RH |
721 | { "cfi_startproc", dot_cfi_startproc, 0 }, |
722 | { "cfi_endproc", dot_cfi_endproc, 0 }, | |
2f0c68f2 | 723 | { "cfi_fde_data", dot_cfi_fde_data, 0 }, |
a4447b93 RH |
724 | { "cfi_def_cfa", dot_cfi, DW_CFA_def_cfa }, |
725 | { "cfi_def_cfa_register", dot_cfi, DW_CFA_def_cfa_register }, | |
726 | { "cfi_def_cfa_offset", dot_cfi, DW_CFA_def_cfa_offset }, | |
727 | { "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset }, | |
728 | { "cfi_offset", dot_cfi, DW_CFA_offset }, | |
fa87b337 | 729 | { "cfi_rel_offset", dot_cfi, CFI_rel_offset }, |
a4447b93 | 730 | { "cfi_register", dot_cfi, DW_CFA_register }, |
2be24b54 ML |
731 | { "cfi_return_column", dot_cfi, CFI_return_column }, |
732 | { "cfi_restore", dot_cfi, DW_CFA_restore }, | |
733 | { "cfi_undefined", dot_cfi, DW_CFA_undefined }, | |
734 | { "cfi_same_value", dot_cfi, DW_CFA_same_value }, | |
735 | { "cfi_remember_state", dot_cfi, DW_CFA_remember_state }, | |
736 | { "cfi_restore_state", dot_cfi, DW_CFA_restore_state }, | |
6749011b | 737 | { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save }, |
cdfbf930 | 738 | { "cfi_escape", dot_cfi_escape, 0 }, |
63752a75 | 739 | { "cfi_signal_frame", dot_cfi, CFI_signal_frame }, |
9b8ae42e | 740 | { "cfi_personality", dot_cfi_personality, 0 }, |
2f0c68f2 | 741 | { "cfi_personality_id", dot_cfi_personality_id, 0 }, |
9b8ae42e | 742 | { "cfi_lsda", dot_cfi_lsda, 0 }, |
f1c4cc75 | 743 | { "cfi_val_encoded_addr", dot_cfi_val_encoded_addr, 0 }, |
2f0c68f2 | 744 | { "cfi_inline_lsda", dot_cfi_inline_lsda, 0 }, |
69602580 | 745 | { "cfi_label", dot_cfi_label, 0 }, |
084303b8 | 746 | { "cfi_val_offset", dot_cfi, DW_CFA_val_offset }, |
a4447b93 RH |
747 | { NULL, NULL, 0 } |
748 | }; | |
54cfded0 AM |
749 | |
750 | static void | |
a4447b93 | 751 | cfi_parse_separator (void) |
54cfded0 | 752 | { |
a4447b93 RH |
753 | SKIP_WHITESPACE (); |
754 | if (*input_line_pointer == ',') | |
755 | input_line_pointer++; | |
756 | else | |
757 | as_bad (_("missing separator")); | |
54cfded0 AM |
758 | } |
759 | ||
a60de03c JB |
760 | #ifndef tc_parse_to_dw2regnum |
761 | static void | |
72b016b4 | 762 | tc_parse_to_dw2regnum (expressionS *exp) |
54cfded0 | 763 | { |
a60de03c | 764 | # ifdef tc_regname_to_dw2regnum |
a4447b93 RH |
765 | SKIP_WHITESPACE (); |
766 | if (is_name_beginner (*input_line_pointer) | |
767 | || (*input_line_pointer == '%' | |
768 | && is_name_beginner (*++input_line_pointer))) | |
769 | { | |
770 | char *name, c; | |
771 | ||
d02603dc | 772 | c = get_symbol_name (& name); |
a4447b93 | 773 | |
a60de03c JB |
774 | exp->X_op = O_constant; |
775 | exp->X_add_number = tc_regname_to_dw2regnum (name); | |
54cfded0 | 776 | |
d02603dc | 777 | restore_line_pointer (c); |
a4447b93 | 778 | } |
a60de03c JB |
779 | else |
780 | # endif | |
781 | expression_and_evaluate (exp); | |
782 | } | |
a4447b93 RH |
783 | #endif |
784 | ||
a60de03c JB |
785 | static unsigned |
786 | cfi_parse_reg (void) | |
787 | { | |
788 | int regno; | |
789 | expressionS exp; | |
790 | ||
791 | tc_parse_to_dw2regnum (&exp); | |
a4447b93 | 792 | switch (exp.X_op) |
54cfded0 | 793 | { |
a4447b93 RH |
794 | case O_register: |
795 | case O_constant: | |
796 | regno = exp.X_add_number; | |
797 | break; | |
798 | ||
799 | default: | |
a60de03c JB |
800 | regno = -1; |
801 | break; | |
802 | } | |
803 | ||
804 | if (regno < 0) | |
805 | { | |
a4447b93 RH |
806 | as_bad (_("bad register expression")); |
807 | regno = 0; | |
54cfded0 AM |
808 | } |
809 | ||
a4447b93 RH |
810 | return regno; |
811 | } | |
812 | ||
813 | static offsetT | |
814 | cfi_parse_const (void) | |
815 | { | |
816 | return get_absolute_expression (); | |
54cfded0 AM |
817 | } |
818 | ||
819 | static void | |
a4447b93 | 820 | dot_cfi (int arg) |
54cfded0 | 821 | { |
a4447b93 RH |
822 | offsetT offset; |
823 | unsigned reg1, reg2; | |
54cfded0 | 824 | |
ae424f82 | 825 | if (frchain_now->frch_cfi_data == NULL) |
54cfded0 AM |
826 | { |
827 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 828 | ignore_rest_of_line (); |
54cfded0 AM |
829 | return; |
830 | } | |
831 | ||
a4447b93 | 832 | /* If the last address was not at the current PC, advance to current. */ |
ae424f82 JJ |
833 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
834 | || S_GET_VALUE (frchain_now->frch_cfi_data->last_address) | |
835 | != frag_now_fix ()) | |
a4447b93 | 836 | cfi_add_advance_loc (symbol_temp_new_now ()); |
54cfded0 AM |
837 | |
838 | switch (arg) | |
839 | { | |
a4447b93 | 840 | case DW_CFA_offset: |
a4447b93 RH |
841 | reg1 = cfi_parse_reg (); |
842 | cfi_parse_separator (); | |
843 | offset = cfi_parse_const (); | |
2be24b54 ML |
844 | cfi_add_CFA_offset (reg1, offset); |
845 | break; | |
a4447b93 | 846 | |
084303b8 AK |
847 | case DW_CFA_val_offset: |
848 | reg1 = cfi_parse_reg (); | |
849 | cfi_parse_separator (); | |
850 | offset = cfi_parse_const (); | |
851 | cfi_add_CFA_val_offset (reg1, offset); | |
852 | break; | |
853 | ||
fa87b337 RH |
854 | case CFI_rel_offset: |
855 | reg1 = cfi_parse_reg (); | |
856 | cfi_parse_separator (); | |
857 | offset = cfi_parse_const (); | |
ae424f82 JJ |
858 | cfi_add_CFA_offset (reg1, |
859 | offset - frchain_now->frch_cfi_data->cur_cfa_offset); | |
fa87b337 RH |
860 | break; |
861 | ||
2be24b54 ML |
862 | case DW_CFA_def_cfa: |
863 | reg1 = cfi_parse_reg (); | |
864 | cfi_parse_separator (); | |
865 | offset = cfi_parse_const (); | |
866 | cfi_add_CFA_def_cfa (reg1, offset); | |
54cfded0 AM |
867 | break; |
868 | ||
a4447b93 RH |
869 | case DW_CFA_register: |
870 | reg1 = cfi_parse_reg (); | |
871 | cfi_parse_separator (); | |
872 | reg2 = cfi_parse_reg (); | |
a4447b93 | 873 | cfi_add_CFA_register (reg1, reg2); |
39b82151 ML |
874 | break; |
875 | ||
a4447b93 RH |
876 | case DW_CFA_def_cfa_register: |
877 | reg1 = cfi_parse_reg (); | |
878 | cfi_add_CFA_def_cfa_register (reg1); | |
54cfded0 AM |
879 | break; |
880 | ||
a4447b93 RH |
881 | case DW_CFA_def_cfa_offset: |
882 | offset = cfi_parse_const (); | |
883 | cfi_add_CFA_def_cfa_offset (offset); | |
54cfded0 AM |
884 | break; |
885 | ||
54cfded0 | 886 | case CFI_adjust_cfa_offset: |
a4447b93 | 887 | offset = cfi_parse_const (); |
ae424f82 JJ |
888 | cfi_add_CFA_def_cfa_offset (frchain_now->frch_cfi_data->cur_cfa_offset |
889 | + offset); | |
54cfded0 AM |
890 | break; |
891 | ||
2be24b54 | 892 | case DW_CFA_restore: |
b57d375b JB |
893 | for (;;) |
894 | { | |
895 | reg1 = cfi_parse_reg (); | |
896 | cfi_add_CFA_restore (reg1); | |
897 | SKIP_WHITESPACE (); | |
898 | if (*input_line_pointer != ',') | |
899 | break; | |
900 | ++input_line_pointer; | |
901 | } | |
2be24b54 ML |
902 | break; |
903 | ||
904 | case DW_CFA_undefined: | |
b57d375b JB |
905 | for (;;) |
906 | { | |
907 | reg1 = cfi_parse_reg (); | |
908 | cfi_add_CFA_undefined (reg1); | |
909 | SKIP_WHITESPACE (); | |
910 | if (*input_line_pointer != ',') | |
911 | break; | |
912 | ++input_line_pointer; | |
913 | } | |
2be24b54 ML |
914 | break; |
915 | ||
916 | case DW_CFA_same_value: | |
917 | reg1 = cfi_parse_reg (); | |
918 | cfi_add_CFA_same_value (reg1); | |
919 | break; | |
920 | ||
921 | case CFI_return_column: | |
922 | reg1 = cfi_parse_reg (); | |
923 | cfi_set_return_column (reg1); | |
924 | break; | |
925 | ||
926 | case DW_CFA_remember_state: | |
927 | cfi_add_CFA_remember_state (); | |
928 | break; | |
929 | ||
930 | case DW_CFA_restore_state: | |
931 | cfi_add_CFA_restore_state (); | |
932 | break; | |
933 | ||
364b6d8b JJ |
934 | case DW_CFA_GNU_window_save: |
935 | cfi_add_CFA_insn (DW_CFA_GNU_window_save); | |
936 | break; | |
937 | ||
63752a75 | 938 | case CFI_signal_frame: |
ae424f82 | 939 | frchain_now->frch_cfi_data->cur_fde_data->signal_frame = 1; |
63752a75 JJ |
940 | break; |
941 | ||
54cfded0 | 942 | default: |
a4447b93 | 943 | abort (); |
54cfded0 | 944 | } |
54cfded0 | 945 | |
a4447b93 | 946 | demand_empty_rest_of_line (); |
54cfded0 AM |
947 | } |
948 | ||
cdfbf930 RH |
949 | static void |
950 | dot_cfi_escape (int ignored ATTRIBUTE_UNUSED) | |
951 | { | |
952 | struct cfi_escape_data *head, **tail, *e; | |
953 | struct cfi_insn_data *insn; | |
954 | ||
ae424f82 | 955 | if (frchain_now->frch_cfi_data == NULL) |
cdfbf930 RH |
956 | { |
957 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 958 | ignore_rest_of_line (); |
cdfbf930 RH |
959 | return; |
960 | } | |
961 | ||
962 | /* If the last address was not at the current PC, advance to current. */ | |
ae424f82 JJ |
963 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
964 | || S_GET_VALUE (frchain_now->frch_cfi_data->last_address) | |
965 | != frag_now_fix ()) | |
cdfbf930 RH |
966 | cfi_add_advance_loc (symbol_temp_new_now ()); |
967 | ||
968 | tail = &head; | |
969 | do | |
970 | { | |
add39d23 | 971 | e = XNEW (struct cfi_escape_data); |
cdfbf930 RH |
972 | do_parse_cons_expression (&e->exp, 1); |
973 | *tail = e; | |
974 | tail = &e->next; | |
975 | } | |
976 | while (*input_line_pointer++ == ','); | |
977 | *tail = NULL; | |
978 | ||
979 | insn = alloc_cfi_insn_data (); | |
980 | insn->insn = CFI_escape; | |
981 | insn->u.esc = head; | |
7c9c8381 JB |
982 | |
983 | --input_line_pointer; | |
984 | demand_empty_rest_of_line (); | |
cdfbf930 RH |
985 | } |
986 | ||
9b8ae42e JJ |
987 | static void |
988 | dot_cfi_personality (int ignored ATTRIBUTE_UNUSED) | |
989 | { | |
990 | struct fde_entry *fde; | |
991 | offsetT encoding; | |
992 | ||
993 | if (frchain_now->frch_cfi_data == NULL) | |
994 | { | |
995 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
996 | ignore_rest_of_line (); | |
997 | return; | |
998 | } | |
999 | ||
1000 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1001 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1002 | if (encoding == DW_EH_PE_omit) |
1003 | { | |
1004 | demand_empty_rest_of_line (); | |
1005 | fde->per_encoding = encoding; | |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1010 | || ((((encoding & 0x70) != 0 |
3dd24306 | 1011 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
2f0c68f2 | 1012 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e JJ |
1013 | #endif |
1014 | ) | |
1015 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1016 | || (encoding & 7) == DW_EH_PE_uleb128 |
1017 | || (encoding & 7) > DW_EH_PE_udata8) | |
1018 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) | |
9b8ae42e JJ |
1019 | { |
1020 | as_bad (_("invalid or unsupported encoding in .cfi_personality")); | |
1021 | ignore_rest_of_line (); | |
1022 | return; | |
1023 | } | |
1024 | ||
1025 | if (*input_line_pointer++ != ',') | |
1026 | { | |
1027 | as_bad (_(".cfi_personality requires encoding and symbol arguments")); | |
1028 | ignore_rest_of_line (); | |
1029 | return; | |
1030 | } | |
1031 | ||
1032 | expression_and_evaluate (&fde->personality); | |
1033 | switch (fde->personality.X_op) | |
1034 | { | |
1035 | case O_symbol: | |
1036 | break; | |
1037 | case O_constant: | |
1038 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1039 | encoding = DW_EH_PE_omit; | |
1040 | break; | |
1041 | default: | |
1042 | encoding = DW_EH_PE_omit; | |
1043 | break; | |
1044 | } | |
1045 | ||
1046 | fde->per_encoding = encoding; | |
1047 | ||
1048 | if (encoding == DW_EH_PE_omit) | |
1049 | { | |
1050 | as_bad (_("wrong second argument to .cfi_personality")); | |
1051 | ignore_rest_of_line (); | |
1052 | return; | |
1053 | } | |
1054 | ||
1055 | demand_empty_rest_of_line (); | |
1056 | } | |
1057 | ||
1058 | static void | |
1059 | dot_cfi_lsda (int ignored ATTRIBUTE_UNUSED) | |
1060 | { | |
1061 | struct fde_entry *fde; | |
1062 | offsetT encoding; | |
1063 | ||
1064 | if (frchain_now->frch_cfi_data == NULL) | |
1065 | { | |
1066 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1067 | ignore_rest_of_line (); | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1072 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1073 | if (encoding == DW_EH_PE_omit) |
1074 | { | |
1075 | demand_empty_rest_of_line (); | |
1076 | fde->lsda_encoding = encoding; | |
1077 | return; | |
1078 | } | |
1079 | ||
1080 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1081 | || ((((encoding & 0x70) != 0 |
2c678708 | 1082 | #if CFI_DIFF_LSDA_OK || defined tc_cfi_emit_pcrel_expr |
2f0c68f2 | 1083 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1084 | #endif |
2f0c68f2 | 1085 | ) |
9b8ae42e | 1086 | /* leb128 can be handled, but does something actually need it? */ |
2f0c68f2 CM |
1087 | || (encoding & 7) == DW_EH_PE_uleb128 |
1088 | || (encoding & 7) > DW_EH_PE_udata8) | |
1089 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) | |
9b8ae42e JJ |
1090 | { |
1091 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1092 | ignore_rest_of_line (); | |
1093 | return; | |
1094 | } | |
1095 | ||
1096 | if (*input_line_pointer++ != ',') | |
1097 | { | |
1098 | as_bad (_(".cfi_lsda requires encoding and symbol arguments")); | |
1099 | ignore_rest_of_line (); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | fde->lsda_encoding = encoding; | |
1104 | ||
1105 | expression_and_evaluate (&fde->lsda); | |
1106 | switch (fde->lsda.X_op) | |
1107 | { | |
1108 | case O_symbol: | |
1109 | break; | |
1110 | case O_constant: | |
1111 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1112 | encoding = DW_EH_PE_omit; | |
1113 | break; | |
1114 | default: | |
1115 | encoding = DW_EH_PE_omit; | |
1116 | break; | |
1117 | } | |
1118 | ||
1119 | fde->lsda_encoding = encoding; | |
1120 | ||
1121 | if (encoding == DW_EH_PE_omit) | |
1122 | { | |
1123 | as_bad (_("wrong second argument to .cfi_lsda")); | |
1124 | ignore_rest_of_line (); | |
1125 | return; | |
1126 | } | |
1127 | ||
1128 | demand_empty_rest_of_line (); | |
1129 | } | |
1130 | ||
f1c4cc75 RH |
1131 | static void |
1132 | dot_cfi_val_encoded_addr (int ignored ATTRIBUTE_UNUSED) | |
1133 | { | |
1134 | struct cfi_insn_data *insn_ptr; | |
1135 | offsetT encoding; | |
1136 | ||
1137 | if (frchain_now->frch_cfi_data == NULL) | |
1138 | { | |
1139 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1140 | ignore_rest_of_line (); | |
1141 | return; | |
1142 | } | |
1143 | ||
1144 | /* If the last address was not at the current PC, advance to current. */ | |
1145 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
1146 | || S_GET_VALUE (frchain_now->frch_cfi_data->last_address) | |
1147 | != frag_now_fix ()) | |
1148 | cfi_add_advance_loc (symbol_temp_new_now ()); | |
1149 | ||
1150 | insn_ptr = alloc_cfi_insn_data (); | |
1151 | insn_ptr->insn = CFI_val_encoded_addr; | |
72b016b4 | 1152 | |
f1c4cc75 RH |
1153 | insn_ptr->u.ea.reg = cfi_parse_reg (); |
1154 | ||
1155 | cfi_parse_separator (); | |
1156 | encoding = cfi_parse_const (); | |
1157 | if ((encoding & 0xff) != encoding | |
1158 | || ((encoding & 0x70) != 0 | |
1159 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr | |
1160 | && (encoding & 0x70) != DW_EH_PE_pcrel | |
1161 | #endif | |
1162 | ) | |
1163 | /* leb128 can be handled, but does something actually need it? */ | |
1164 | || (encoding & 7) == DW_EH_PE_uleb128 | |
1165 | || (encoding & 7) > DW_EH_PE_udata8) | |
1166 | { | |
1167 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1168 | encoding = DW_EH_PE_omit; | |
1169 | } | |
1170 | ||
1171 | cfi_parse_separator (); | |
1172 | expression_and_evaluate (&insn_ptr->u.ea.exp); | |
1173 | switch (insn_ptr->u.ea.exp.X_op) | |
1174 | { | |
1175 | case O_symbol: | |
1176 | break; | |
1177 | case O_constant: | |
1178 | if ((encoding & 0x70) != DW_EH_PE_pcrel) | |
83e12deb | 1179 | break; |
f1c4cc75 RH |
1180 | default: |
1181 | encoding = DW_EH_PE_omit; | |
1182 | break; | |
1183 | } | |
1184 | ||
1185 | insn_ptr->u.ea.encoding = encoding; | |
1186 | if (encoding == DW_EH_PE_omit) | |
1187 | { | |
1188 | as_bad (_("wrong third argument to .cfi_val_encoded_addr")); | |
1189 | ignore_rest_of_line (); | |
1190 | return; | |
1191 | } | |
1192 | ||
1193 | demand_empty_rest_of_line (); | |
1194 | } | |
1195 | ||
69602580 JB |
1196 | static void |
1197 | dot_cfi_label (int ignored ATTRIBUTE_UNUSED) | |
1198 | { | |
1199 | char *name = read_symbol_name (); | |
1200 | ||
1201 | if (name == NULL) | |
1202 | return; | |
1203 | ||
1204 | /* If the last address was not at the current PC, advance to current. */ | |
1205 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
1206 | || S_GET_VALUE (frchain_now->frch_cfi_data->last_address) | |
1207 | != frag_now_fix ()) | |
1208 | cfi_add_advance_loc (symbol_temp_new_now ()); | |
1209 | ||
1210 | cfi_add_label (name); | |
92e18d93 | 1211 | free (name); |
69602580 JB |
1212 | |
1213 | demand_empty_rest_of_line (); | |
1214 | } | |
1215 | ||
38462edf JJ |
1216 | static void |
1217 | dot_cfi_sections (int ignored ATTRIBUTE_UNUSED) | |
1218 | { | |
1219 | int sections = 0; | |
1220 | ||
1221 | SKIP_WHITESPACE (); | |
d02603dc | 1222 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
38462edf JJ |
1223 | while (1) |
1224 | { | |
d02603dc | 1225 | char * saved_ilp; |
38462edf JJ |
1226 | char *name, c; |
1227 | ||
d02603dc NC |
1228 | saved_ilp = input_line_pointer; |
1229 | c = get_symbol_name (& name); | |
38462edf | 1230 | |
72b016b4 NC |
1231 | if (strncmp (name, ".eh_frame", sizeof ".eh_frame") == 0 |
1232 | && name[9] != '_') | |
38462edf | 1233 | sections |= CFI_EMIT_eh_frame; |
72b016b4 | 1234 | else if (strncmp (name, ".debug_frame", sizeof ".debug_frame") == 0) |
38462edf | 1235 | sections |= CFI_EMIT_debug_frame; |
2f0c68f2 CM |
1236 | #if SUPPORT_COMPACT_EH |
1237 | else if (strncmp (name, ".eh_frame_entry", sizeof ".eh_frame_entry") == 0) | |
1238 | { | |
1239 | compact_eh = TRUE; | |
1240 | sections |= CFI_EMIT_eh_frame_compact; | |
1241 | } | |
1242 | #endif | |
1bce6bd8 PB |
1243 | #ifdef tc_cfi_section_name |
1244 | else if (strcmp (name, tc_cfi_section_name) == 0) | |
1245 | sections |= CFI_EMIT_target; | |
1246 | #endif | |
38462edf JJ |
1247 | else |
1248 | { | |
1249 | *input_line_pointer = c; | |
d02603dc | 1250 | input_line_pointer = saved_ilp; |
38462edf JJ |
1251 | break; |
1252 | } | |
1253 | ||
1254 | *input_line_pointer = c; | |
d02603dc | 1255 | SKIP_WHITESPACE_AFTER_NAME (); |
38462edf JJ |
1256 | if (*input_line_pointer == ',') |
1257 | { | |
1258 | name = input_line_pointer++; | |
1259 | SKIP_WHITESPACE (); | |
d02603dc | 1260 | if (!is_name_beginner (*input_line_pointer) && *input_line_pointer != '"') |
38462edf JJ |
1261 | { |
1262 | input_line_pointer = name; | |
1263 | break; | |
1264 | } | |
1265 | } | |
d02603dc | 1266 | else if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
38462edf JJ |
1267 | break; |
1268 | } | |
1269 | ||
1270 | demand_empty_rest_of_line (); | |
2f0c68f2 CM |
1271 | if (cfi_sections_set && cfi_sections != sections) |
1272 | as_bad (_("inconsistent uses of .cfi_sections")); | |
38462edf JJ |
1273 | cfi_sections = sections; |
1274 | } | |
1275 | ||
54cfded0 | 1276 | static void |
a4447b93 | 1277 | dot_cfi_startproc (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1278 | { |
a4447b93 | 1279 | int simple = 0; |
39b82151 | 1280 | |
ae424f82 | 1281 | if (frchain_now->frch_cfi_data != NULL) |
54cfded0 AM |
1282 | { |
1283 | as_bad (_("previous CFI entry not closed (missing .cfi_endproc)")); | |
7c9c8381 | 1284 | ignore_rest_of_line (); |
54cfded0 AM |
1285 | return; |
1286 | } | |
1287 | ||
a4447b93 | 1288 | cfi_new_fde (symbol_temp_new_now ()); |
39b82151 | 1289 | |
a4447b93 | 1290 | SKIP_WHITESPACE (); |
d02603dc | 1291 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
a4447b93 | 1292 | { |
d02603dc | 1293 | char * saved_ilp = input_line_pointer; |
a4447b93 | 1294 | char *name, c; |
54cfded0 | 1295 | |
d02603dc | 1296 | c = get_symbol_name (& name); |
54cfded0 | 1297 | |
a4447b93 RH |
1298 | if (strcmp (name, "simple") == 0) |
1299 | { | |
1300 | simple = 1; | |
d02603dc | 1301 | restore_line_pointer (c); |
a4447b93 RH |
1302 | } |
1303 | else | |
d02603dc | 1304 | input_line_pointer = saved_ilp; |
a4447b93 RH |
1305 | } |
1306 | demand_empty_rest_of_line (); | |
1307 | ||
bd5608dc | 1308 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1309 | all_cfi_sections |= cfi_sections; |
1310 | cfi_set_sections (); | |
ae424f82 | 1311 | frchain_now->frch_cfi_data->cur_cfa_offset = 0; |
a4447b93 | 1312 | if (!simple) |
39b82151 | 1313 | tc_cfi_frame_initial_instructions (); |
1bce6bd8 PB |
1314 | |
1315 | if ((cfi_sections & CFI_EMIT_target) != 0) | |
1316 | tc_cfi_startproc (); | |
54cfded0 AM |
1317 | } |
1318 | ||
a4447b93 RH |
1319 | static void |
1320 | dot_cfi_endproc (int ignored ATTRIBUTE_UNUSED) | |
1321 | { | |
ae424f82 | 1322 | if (frchain_now->frch_cfi_data == NULL) |
a4447b93 RH |
1323 | { |
1324 | as_bad (_(".cfi_endproc without corresponding .cfi_startproc")); | |
7c9c8381 | 1325 | ignore_rest_of_line (); |
a4447b93 RH |
1326 | return; |
1327 | } | |
54cfded0 | 1328 | |
2f0c68f2 | 1329 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; |
1bce6bd8 | 1330 | |
a4447b93 | 1331 | cfi_end_fde (symbol_temp_new_now ()); |
7c9c8381 JB |
1332 | |
1333 | demand_empty_rest_of_line (); | |
1bce6bd8 | 1334 | |
bd5608dc | 1335 | cfi_sections_set = TRUE; |
1bce6bd8 | 1336 | if ((cfi_sections & CFI_EMIT_target) != 0) |
2f0c68f2 | 1337 | tc_cfi_endproc (last_fde); |
a4447b93 | 1338 | } |
39b82151 | 1339 | |
2f0c68f2 CM |
1340 | static segT |
1341 | get_cfi_seg (segT cseg, const char *base, flagword flags, int align) | |
54cfded0 | 1342 | { |
2f0c68f2 CM |
1343 | /* Exclude .debug_frame sections for Compact EH. */ |
1344 | if (SUPPORT_FRAME_LINKONCE || ((flags & SEC_DEBUGGING) == 0 && compact_eh)) | |
1345 | { | |
1346 | struct dwcfi_seg_list *l; | |
1347 | ||
1348 | l = dwcfi_hash_find_or_make (cseg, base, flags); | |
1349 | ||
1350 | cseg = l->seg; | |
1351 | subseg_set (cseg, l->subseg); | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | cseg = subseg_new (base, 0); | |
1356 | bfd_set_section_flags (stdoutput, cseg, flags); | |
1357 | } | |
1358 | record_alignment (cseg, align); | |
1359 | return cseg; | |
a4447b93 | 1360 | } |
54cfded0 | 1361 | |
2f0c68f2 CM |
1362 | #if SUPPORT_COMPACT_EH |
1363 | static void | |
1364 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1365 | { | |
1366 | struct fde_entry *fde; | |
54cfded0 | 1367 | |
2f0c68f2 CM |
1368 | if (frchain_now->frch_cfi_data == NULL) |
1369 | { | |
1370 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1371 | ignore_rest_of_line (); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1376 | fde->personality_id = cfi_parse_const (); | |
1377 | demand_empty_rest_of_line (); | |
1378 | ||
1379 | if (fde->personality_id == 0 || fde->personality_id > 3) | |
1380 | { | |
1381 | as_bad (_("wrong argument to .cfi_personality_id")); | |
1382 | return; | |
1383 | } | |
1384 | } | |
1385 | ||
1386 | static void | |
1387 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) | |
a4447b93 | 1388 | { |
2f0c68f2 CM |
1389 | if (frchain_now->frch_cfi_data == NULL) |
1390 | { | |
1391 | as_bad (_(".cfi_fde_data without corresponding .cfi_startproc")); | |
1392 | ignore_rest_of_line (); | |
1393 | return; | |
1394 | } | |
1395 | ||
1396 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1397 | ||
bd5608dc | 1398 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1399 | if ((cfi_sections & CFI_EMIT_target) != 0 |
1400 | || (cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
1401 | { | |
1402 | struct cfi_escape_data *head, **tail, *e; | |
1403 | int num_ops = 0; | |
1404 | ||
1405 | tail = &head; | |
1406 | if (!is_it_end_of_statement ()) | |
1407 | { | |
1408 | num_ops = 0; | |
1409 | do | |
1410 | { | |
add39d23 | 1411 | e = XNEW (struct cfi_escape_data); |
2f0c68f2 CM |
1412 | do_parse_cons_expression (&e->exp, 1); |
1413 | *tail = e; | |
1414 | tail = &e->next; | |
1415 | num_ops++; | |
1416 | } | |
1417 | while (*input_line_pointer++ == ','); | |
1418 | --input_line_pointer; | |
1419 | } | |
1420 | *tail = NULL; | |
1421 | ||
1422 | if (last_fde->lsda_encoding != DW_EH_PE_omit) | |
1423 | last_fde->eh_header_type = EH_COMPACT_HAS_LSDA; | |
1424 | else if (num_ops <= 3 && last_fde->per_encoding == DW_EH_PE_omit) | |
1425 | last_fde->eh_header_type = EH_COMPACT_INLINE; | |
1426 | else | |
1427 | last_fde->eh_header_type = EH_COMPACT_OUTLINE; | |
1428 | ||
1429 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1430 | num_ops = 3; | |
1431 | ||
1432 | last_fde->eh_data_size = num_ops; | |
add39d23 | 1433 | last_fde->eh_data = XNEWVEC (bfd_byte, num_ops); |
2f0c68f2 CM |
1434 | num_ops = 0; |
1435 | while (head) | |
1436 | { | |
1437 | e = head; | |
1438 | head = e->next; | |
1439 | last_fde->eh_data[num_ops++] = e->exp.X_add_number; | |
1440 | free (e); | |
1441 | } | |
1442 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1443 | while (num_ops < 3) | |
1444 | last_fde->eh_data[num_ops++] = tc_compact_eh_opcode_stop; | |
1445 | } | |
1446 | ||
1447 | demand_empty_rest_of_line (); | |
a4447b93 | 1448 | } |
54cfded0 | 1449 | |
2f0c68f2 CM |
1450 | /* Function to emit the compact unwinding opcodes stored in the |
1451 | fde's eh_data field. The end of the opcode data will be | |
1452 | padded to the value in align. */ | |
54cfded0 | 1453 | |
2f0c68f2 CM |
1454 | static void |
1455 | output_compact_unwind_data (struct fde_entry *fde, int align) | |
a4447b93 | 1456 | { |
2f0c68f2 CM |
1457 | int data_size = fde->eh_data_size + 2; |
1458 | int align_padding; | |
1459 | int amask; | |
1460 | char *p; | |
1461 | ||
1462 | fde->eh_loc = symbol_temp_new_now (); | |
1463 | ||
1464 | p = frag_more (1); | |
1465 | if (fde->personality_id != 0) | |
1466 | *p = fde->personality_id; | |
1467 | else if (fde->per_encoding != DW_EH_PE_omit) | |
1468 | { | |
1469 | *p = 0; | |
1470 | emit_expr_encoded (&fde->personality, fde->per_encoding, FALSE); | |
1471 | data_size += encoding_size (fde->per_encoding); | |
1472 | } | |
1473 | else | |
1474 | *p = 1; | |
1475 | ||
1476 | amask = (1 << align) - 1; | |
1477 | align_padding = ((data_size + amask) & ~amask) - data_size; | |
1478 | ||
1479 | p = frag_more (fde->eh_data_size + 1 + align_padding); | |
1480 | memcpy (p, fde->eh_data, fde->eh_data_size); | |
1481 | p += fde->eh_data_size; | |
1482 | ||
1483 | while (align_padding-- > 0) | |
1484 | *(p++) = tc_compact_eh_opcode_pad; | |
1485 | ||
1486 | *(p++) = tc_compact_eh_opcode_stop; | |
1487 | fde->eh_header_type = EH_COMPACT_OUTLINE_DONE; | |
a4447b93 RH |
1488 | } |
1489 | ||
2f0c68f2 CM |
1490 | /* Handle the .cfi_inline_lsda directive. */ |
1491 | static void | |
1492 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) | |
1493 | { | |
1494 | segT ccseg; | |
1495 | int align; | |
1496 | long max_alignment = 28; | |
1497 | ||
1498 | if (!last_fde) | |
1499 | { | |
1500 | as_bad (_("unexpected .cfi_inline_lsda")); | |
1501 | ignore_rest_of_line (); | |
1502 | return; | |
1503 | } | |
1504 | ||
1505 | if ((last_fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
1506 | { | |
1507 | as_bad (_(".cfi_inline_lsda not valid for this frame")); | |
1508 | ignore_rest_of_line (); | |
1509 | return; | |
1510 | } | |
1511 | ||
1512 | if (last_fde->eh_header_type != EH_COMPACT_UNKNOWN | |
1513 | && last_fde->eh_header_type != EH_COMPACT_HAS_LSDA) | |
1514 | { | |
1515 | as_bad (_(".cfi_inline_lsda seen for frame without .cfi_lsda")); | |
1516 | ignore_rest_of_line (); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | #ifdef md_flush_pending_output | |
1521 | md_flush_pending_output (); | |
1522 | #endif | |
1523 | ||
1524 | align = get_absolute_expression (); | |
1525 | if (align > max_alignment) | |
1526 | { | |
1527 | align = max_alignment; | |
1528 | as_bad (_("Alignment too large: %d. assumed."), align); | |
1529 | } | |
1530 | else if (align < 0) | |
1531 | { | |
1532 | as_warn (_("Alignment negative: 0 assumed.")); | |
1533 | align = 0; | |
1534 | } | |
1535 | ||
1536 | demand_empty_rest_of_line (); | |
1537 | ccseg = CUR_SEG (last_fde); | |
54cfded0 | 1538 | |
2f0c68f2 CM |
1539 | /* Open .gnu_extab section. */ |
1540 | get_cfi_seg (ccseg, ".gnu_extab", | |
1541 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
1542 | | DWARF2_EH_FRAME_READ_ONLY), | |
1543 | 1); | |
1544 | ||
1545 | frag_align (align, 0, 0); | |
1546 | record_alignment (now_seg, align); | |
1547 | if (last_fde->eh_header_type == EH_COMPACT_HAS_LSDA) | |
1548 | output_compact_unwind_data (last_fde, align); | |
1549 | ||
1550 | last_fde = NULL; | |
1551 | ||
1552 | return; | |
1553 | } | |
1554 | #else /* !SUPPORT_COMPACT_EH */ | |
a4447b93 | 1555 | static void |
2f0c68f2 | 1556 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) |
a4447b93 | 1557 | { |
2f0c68f2 CM |
1558 | as_bad (_(".cfi_inline_lsda is not supported for this target")); |
1559 | ignore_rest_of_line (); | |
54cfded0 AM |
1560 | } |
1561 | ||
a4447b93 | 1562 | static void |
2f0c68f2 | 1563 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1564 | { |
2f0c68f2 CM |
1565 | as_bad (_(".cfi_fde_data is not supported for this target")); |
1566 | ignore_rest_of_line (); | |
a4447b93 | 1567 | } |
54cfded0 | 1568 | |
2f0c68f2 CM |
1569 | static void |
1570 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1571 | { | |
1572 | as_bad (_(".cfi_personality_id is not supported for this target")); | |
1573 | ignore_rest_of_line (); | |
1574 | } | |
1575 | #endif | |
1576 | \f | |
a4447b93 RH |
1577 | static void |
1578 | output_cfi_insn (struct cfi_insn_data *insn) | |
1579 | { | |
1580 | offsetT offset; | |
1581 | unsigned int regno; | |
54cfded0 | 1582 | |
a4447b93 | 1583 | switch (insn->insn) |
54cfded0 | 1584 | { |
a4447b93 RH |
1585 | case DW_CFA_advance_loc: |
1586 | { | |
1587 | symbolS *from = insn->u.ll.lab1; | |
1588 | symbolS *to = insn->u.ll.lab2; | |
1589 | ||
1590 | if (symbol_get_frag (to) == symbol_get_frag (from)) | |
1591 | { | |
1592 | addressT delta = S_GET_VALUE (to) - S_GET_VALUE (from); | |
1593 | addressT scaled = delta / DWARF2_LINE_MIN_INSN_LENGTH; | |
1594 | ||
1595 | if (scaled <= 0x3F) | |
1596 | out_one (DW_CFA_advance_loc + scaled); | |
395e8345 | 1597 | else if (scaled <= 0xFF) |
a4447b93 | 1598 | { |
9b8ae42e | 1599 | out_one (DW_CFA_advance_loc1); |
395e8345 | 1600 | out_one (scaled); |
a4447b93 | 1601 | } |
395e8345 | 1602 | else if (scaled <= 0xFFFF) |
a4447b93 | 1603 | { |
9b8ae42e | 1604 | out_one (DW_CFA_advance_loc2); |
395e8345 | 1605 | out_two (scaled); |
a4447b93 RH |
1606 | } |
1607 | else | |
1608 | { | |
9b8ae42e | 1609 | out_one (DW_CFA_advance_loc4); |
395e8345 | 1610 | out_four (scaled); |
a4447b93 RH |
1611 | } |
1612 | } | |
1613 | else | |
1614 | { | |
1615 | expressionS exp; | |
1616 | ||
1617 | exp.X_op = O_subtract; | |
1618 | exp.X_add_symbol = to; | |
1619 | exp.X_op_symbol = from; | |
1620 | exp.X_add_number = 0; | |
1621 | ||
1622 | /* The code in ehopt.c expects that one byte of the encoding | |
1623 | is already allocated to the frag. This comes from the way | |
1624 | that it scans the .eh_frame section looking first for the | |
1625 | .byte DW_CFA_advance_loc4. */ | |
1fbfe785 | 1626 | *frag_more (1) = DW_CFA_advance_loc4; |
a4447b93 RH |
1627 | |
1628 | frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3, | |
1629 | make_expr_symbol (&exp), frag_now_fix () - 1, | |
1630 | (char *) frag_now); | |
1631 | } | |
1632 | } | |
1633 | break; | |
1634 | ||
1635 | case DW_CFA_def_cfa: | |
1636 | offset = insn->u.ri.offset; | |
1637 | if (offset < 0) | |
54cfded0 | 1638 | { |
a4447b93 RH |
1639 | out_one (DW_CFA_def_cfa_sf); |
1640 | out_uleb128 (insn->u.ri.reg); | |
dcb45a06 | 1641 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
54cfded0 AM |
1642 | } |
1643 | else | |
1644 | { | |
a4447b93 RH |
1645 | out_one (DW_CFA_def_cfa); |
1646 | out_uleb128 (insn->u.ri.reg); | |
1647 | out_uleb128 (offset); | |
54cfded0 AM |
1648 | } |
1649 | break; | |
1650 | ||
a4447b93 | 1651 | case DW_CFA_def_cfa_register: |
2be24b54 ML |
1652 | case DW_CFA_undefined: |
1653 | case DW_CFA_same_value: | |
1654 | out_one (insn->insn); | |
1655 | out_uleb128 (insn->u.r); | |
54cfded0 AM |
1656 | break; |
1657 | ||
a4447b93 RH |
1658 | case DW_CFA_def_cfa_offset: |
1659 | offset = insn->u.i; | |
1660 | if (offset < 0) | |
1661 | { | |
1662 | out_one (DW_CFA_def_cfa_offset_sf); | |
dcb45a06 | 1663 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
a4447b93 RH |
1664 | } |
1665 | else | |
1666 | { | |
1667 | out_one (DW_CFA_def_cfa_offset); | |
1668 | out_uleb128 (offset); | |
1669 | } | |
54cfded0 AM |
1670 | break; |
1671 | ||
2be24b54 ML |
1672 | case DW_CFA_restore: |
1673 | regno = insn->u.r; | |
1674 | if (regno <= 0x3F) | |
1675 | { | |
1676 | out_one (DW_CFA_restore + regno); | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | out_one (DW_CFA_restore_extended); | |
1681 | out_uleb128 (regno); | |
1682 | } | |
1683 | break; | |
1684 | ||
a4447b93 RH |
1685 | case DW_CFA_offset: |
1686 | regno = insn->u.ri.reg; | |
1687 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1688 | if (offset < 0) | |
1689 | { | |
1233ae62 | 1690 | out_one (DW_CFA_offset_extended_sf); |
a4447b93 RH |
1691 | out_uleb128 (regno); |
1692 | out_sleb128 (offset); | |
1693 | } | |
1694 | else if (regno <= 0x3F) | |
1695 | { | |
1696 | out_one (DW_CFA_offset + regno); | |
1697 | out_uleb128 (offset); | |
1698 | } | |
54cfded0 AM |
1699 | else |
1700 | { | |
a4447b93 RH |
1701 | out_one (DW_CFA_offset_extended); |
1702 | out_uleb128 (regno); | |
1703 | out_uleb128 (offset); | |
54cfded0 | 1704 | } |
54cfded0 AM |
1705 | break; |
1706 | ||
084303b8 AK |
1707 | case DW_CFA_val_offset: |
1708 | regno = insn->u.ri.reg; | |
1709 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1710 | if (offset < 0) | |
1711 | { | |
1712 | out_one (DW_CFA_val_offset_sf); | |
1713 | out_uleb128 (regno); | |
1714 | out_sleb128 (offset); | |
1715 | } | |
1716 | else | |
1717 | { | |
1718 | out_one (DW_CFA_val_offset); | |
1719 | out_uleb128 (regno); | |
1720 | out_uleb128 (offset); | |
1721 | } | |
1722 | break; | |
1723 | ||
a4447b93 RH |
1724 | case DW_CFA_register: |
1725 | out_one (DW_CFA_register); | |
1726 | out_uleb128 (insn->u.rr.reg1); | |
1727 | out_uleb128 (insn->u.rr.reg2); | |
39b82151 ML |
1728 | break; |
1729 | ||
2be24b54 ML |
1730 | case DW_CFA_remember_state: |
1731 | case DW_CFA_restore_state: | |
2be24b54 | 1732 | out_one (insn->insn); |
54cfded0 AM |
1733 | break; |
1734 | ||
364b6d8b JJ |
1735 | case DW_CFA_GNU_window_save: |
1736 | out_one (DW_CFA_GNU_window_save); | |
1737 | break; | |
1738 | ||
cdfbf930 RH |
1739 | case CFI_escape: |
1740 | { | |
1741 | struct cfi_escape_data *e; | |
1742 | for (e = insn->u.esc; e ; e = e->next) | |
1743 | emit_expr (&e->exp, 1); | |
1744 | break; | |
1745 | } | |
1746 | ||
f1c4cc75 RH |
1747 | case CFI_val_encoded_addr: |
1748 | { | |
83e12deb | 1749 | unsigned encoding = insn->u.ea.encoding; |
2f0c68f2 | 1750 | offsetT enc_size; |
f1c4cc75 RH |
1751 | |
1752 | if (encoding == DW_EH_PE_omit) | |
1753 | break; | |
1754 | out_one (DW_CFA_val_expression); | |
1755 | out_uleb128 (insn->u.ea.reg); | |
1756 | ||
83e12deb | 1757 | switch (encoding & 0x7) |
f1c4cc75 RH |
1758 | { |
1759 | case DW_EH_PE_absptr: | |
2f0c68f2 | 1760 | enc_size = DWARF2_ADDR_SIZE (stdoutput); |
f1c4cc75 RH |
1761 | break; |
1762 | case DW_EH_PE_udata2: | |
2f0c68f2 | 1763 | enc_size = 2; |
f1c4cc75 RH |
1764 | break; |
1765 | case DW_EH_PE_udata4: | |
2f0c68f2 | 1766 | enc_size = 4; |
f1c4cc75 RH |
1767 | break; |
1768 | case DW_EH_PE_udata8: | |
2f0c68f2 | 1769 | enc_size = 8; |
f1c4cc75 RH |
1770 | break; |
1771 | default: | |
1772 | abort (); | |
1773 | } | |
1774 | ||
1775 | /* If the user has requested absolute encoding, | |
1776 | then use the smaller DW_OP_addr encoding. */ | |
1777 | if (insn->u.ea.encoding == DW_EH_PE_absptr) | |
1778 | { | |
2f0c68f2 | 1779 | out_uleb128 (1 + enc_size); |
f1c4cc75 RH |
1780 | out_one (DW_OP_addr); |
1781 | } | |
1782 | else | |
1783 | { | |
2f0c68f2 | 1784 | out_uleb128 (1 + 1 + enc_size); |
f1c4cc75 RH |
1785 | out_one (DW_OP_GNU_encoded_addr); |
1786 | out_one (encoding); | |
1787 | ||
1788 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1789 | { | |
1790 | #if CFI_DIFF_EXPR_OK | |
1791 | insn->u.ea.exp.X_op = O_subtract; | |
1792 | insn->u.ea.exp.X_op_symbol = symbol_temp_new_now (); | |
1793 | #elif defined (tc_cfi_emit_pcrel_expr) | |
2f0c68f2 | 1794 | tc_cfi_emit_pcrel_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1795 | break; |
1796 | #else | |
1797 | abort (); | |
1798 | #endif | |
1799 | } | |
1800 | } | |
2f0c68f2 | 1801 | emit_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1802 | } |
1803 | break; | |
72b016b4 | 1804 | |
69602580 JB |
1805 | case CFI_label: |
1806 | colon (insn->u.sym_name); | |
1807 | break; | |
1808 | ||
54cfded0 | 1809 | default: |
a4447b93 | 1810 | abort (); |
54cfded0 | 1811 | } |
54cfded0 AM |
1812 | } |
1813 | ||
1814 | static void | |
38462edf | 1815 | output_cie (struct cie_entry *cie, bfd_boolean eh_frame, int align) |
54cfded0 | 1816 | { |
a4447b93 | 1817 | symbolS *after_size_address, *end_address; |
7c0295b1 | 1818 | expressionS exp; |
a4447b93 | 1819 | struct cfi_insn_data *i; |
9b8ae42e | 1820 | offsetT augmentation_size; |
8c9b70b1 | 1821 | int enc; |
38462edf | 1822 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
a4447b93 RH |
1823 | |
1824 | cie->start_address = symbol_temp_new_now (); | |
1825 | after_size_address = symbol_temp_make (); | |
1826 | end_address = symbol_temp_make (); | |
1827 | ||
1828 | exp.X_op = O_subtract; | |
1829 | exp.X_add_symbol = end_address; | |
1830 | exp.X_op_symbol = after_size_address; | |
1831 | exp.X_add_number = 0; | |
1832 | ||
38462edf JJ |
1833 | if (eh_frame || fmt == dwarf2_format_32bit) |
1834 | emit_expr (&exp, 4); /* Length. */ | |
1835 | else | |
1836 | { | |
1837 | if (fmt == dwarf2_format_64bit) | |
1838 | out_four (-1); | |
1839 | emit_expr (&exp, 8); /* Length. */ | |
1840 | } | |
a4447b93 | 1841 | symbol_set_value_now (after_size_address); |
38462edf JJ |
1842 | if (eh_frame) |
1843 | out_four (0); /* CIE id. */ | |
1844 | else | |
1845 | { | |
1846 | out_four (-1); /* CIE id. */ | |
1847 | if (fmt != dwarf2_format_32bit) | |
1848 | out_four (-1); | |
1849 | } | |
289040ca | 1850 | out_one (DW_CIE_VERSION); /* Version. */ |
38462edf JJ |
1851 | if (eh_frame) |
1852 | { | |
1853 | out_one ('z'); /* Augmentation. */ | |
1854 | if (cie->per_encoding != DW_EH_PE_omit) | |
1855 | out_one ('P'); | |
1856 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1857 | out_one ('L'); | |
1858 | out_one ('R'); | |
38462edf | 1859 | } |
d905c788 TS |
1860 | if (cie->signal_frame) |
1861 | out_one ('S'); | |
a4447b93 | 1862 | out_one (0); |
289040ca NC |
1863 | out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */ |
1864 | out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */ | |
0da76f83 NC |
1865 | if (DW_CIE_VERSION == 1) /* Return column. */ |
1866 | out_one (cie->return_column); | |
1867 | else | |
1868 | out_uleb128 (cie->return_column); | |
38462edf JJ |
1869 | if (eh_frame) |
1870 | { | |
1871 | augmentation_size = 1 + (cie->lsda_encoding != DW_EH_PE_omit); | |
1872 | if (cie->per_encoding != DW_EH_PE_omit) | |
1873 | augmentation_size += 1 + encoding_size (cie->per_encoding); | |
1874 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
4e4e1355 | 1875 | |
2f0c68f2 | 1876 | emit_expr_encoded (&cie->personality, cie->per_encoding, TRUE); |
4e4e1355 TS |
1877 | |
1878 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1879 | out_one (cie->lsda_encoding); | |
9b8ae42e | 1880 | } |
8c9b70b1 RH |
1881 | |
1882 | switch (DWARF2_FDE_RELOC_SIZE) | |
1883 | { | |
1884 | case 2: | |
1885 | enc = DW_EH_PE_sdata2; | |
1886 | break; | |
1887 | case 4: | |
1888 | enc = DW_EH_PE_sdata4; | |
1889 | break; | |
1890 | case 8: | |
1891 | enc = DW_EH_PE_sdata8; | |
1892 | break; | |
1893 | default: | |
1894 | abort (); | |
1895 | } | |
3dd24306 | 1896 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
8c9b70b1 | 1897 | enc |= DW_EH_PE_pcrel; |
364b6d8b | 1898 | #endif |
2f0c68f2 CM |
1899 | #ifdef DWARF2_FDE_RELOC_ENCODING |
1900 | /* Allow target to override encoding. */ | |
1901 | enc = DWARF2_FDE_RELOC_ENCODING (enc); | |
1902 | #endif | |
1903 | cie->fde_encoding = enc; | |
38462edf JJ |
1904 | if (eh_frame) |
1905 | out_one (enc); | |
a4447b93 RH |
1906 | |
1907 | if (cie->first) | |
72b016b4 NC |
1908 | { |
1909 | for (i = cie->first; i != cie->last; i = i->next) | |
83e12deb | 1910 | { |
6303c4ae | 1911 | if (CUR_SEG (i) != CUR_SEG (cie)) |
72b016b4 NC |
1912 | continue; |
1913 | output_cfi_insn (i); | |
1914 | } | |
1915 | } | |
a4447b93 | 1916 | |
38462edf | 1917 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
1918 | symbol_set_value_now (end_address); |
1919 | } | |
54cfded0 | 1920 | |
a4447b93 RH |
1921 | static void |
1922 | output_fde (struct fde_entry *fde, struct cie_entry *cie, | |
38462edf JJ |
1923 | bfd_boolean eh_frame, struct cfi_insn_data *first, |
1924 | int align) | |
a4447b93 RH |
1925 | { |
1926 | symbolS *after_size_address, *end_address; | |
1927 | expressionS exp; | |
9b8ae42e | 1928 | offsetT augmentation_size; |
38462edf JJ |
1929 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
1930 | int offset_size; | |
1931 | int addr_size; | |
54cfded0 | 1932 | |
a4447b93 RH |
1933 | after_size_address = symbol_temp_make (); |
1934 | end_address = symbol_temp_make (); | |
54cfded0 | 1935 | |
a4447b93 RH |
1936 | exp.X_op = O_subtract; |
1937 | exp.X_add_symbol = end_address; | |
1938 | exp.X_op_symbol = after_size_address; | |
1939 | exp.X_add_number = 0; | |
38462edf JJ |
1940 | if (eh_frame || fmt == dwarf2_format_32bit) |
1941 | offset_size = 4; | |
1942 | else | |
1943 | { | |
1944 | if (fmt == dwarf2_format_64bit) | |
1945 | out_four (-1); | |
1946 | offset_size = 8; | |
1947 | } | |
1948 | emit_expr (&exp, offset_size); /* Length. */ | |
a4447b93 | 1949 | symbol_set_value_now (after_size_address); |
54cfded0 | 1950 | |
38462edf JJ |
1951 | if (eh_frame) |
1952 | { | |
3251495b | 1953 | exp.X_op = O_subtract; |
38462edf JJ |
1954 | exp.X_add_symbol = after_size_address; |
1955 | exp.X_op_symbol = cie->start_address; | |
3251495b RH |
1956 | exp.X_add_number = 0; |
1957 | emit_expr (&exp, offset_size); /* CIE offset. */ | |
38462edf JJ |
1958 | } |
1959 | else | |
1960 | { | |
3251495b | 1961 | TC_DWARF2_EMIT_OFFSET (cie->start_address, offset_size); |
38462edf | 1962 | } |
364b6d8b | 1963 | |
2f0c68f2 | 1964 | exp.X_op = O_symbol; |
38462edf JJ |
1965 | if (eh_frame) |
1966 | { | |
2f0c68f2 CM |
1967 | bfd_reloc_code_real_type code |
1968 | = tc_cfi_reloc_for_encoding (cie->fde_encoding); | |
1969 | if (code != BFD_RELOC_NONE) | |
1970 | { | |
1971 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
1972 | char *p = frag_more (4); | |
1973 | md_number_to_chars (p, 0, 4); | |
1974 | fix_new (frag_now, p - frag_now->fr_literal, 4, fde->start_address, | |
1975 | 0, howto->pc_relative, code); | |
1976 | } | |
1977 | else | |
1978 | { | |
1979 | exp.X_op = O_subtract; | |
1980 | exp.X_add_number = 0; | |
3dd24306 | 1981 | #if CFI_DIFF_EXPR_OK |
2f0c68f2 CM |
1982 | exp.X_add_symbol = fde->start_address; |
1983 | exp.X_op_symbol = symbol_temp_new_now (); | |
1984 | emit_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ | |
364b6d8b | 1985 | #else |
2f0c68f2 CM |
1986 | exp.X_op = O_symbol; |
1987 | exp.X_add_symbol = fde->start_address; | |
1988 | ||
1989 | #if defined(tc_cfi_emit_pcrel_expr) | |
1990 | tc_cfi_emit_pcrel_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ | |
364b6d8b | 1991 | #else |
2f0c68f2 | 1992 | emit_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ |
364b6d8b | 1993 | #endif |
364b6d8b | 1994 | #endif |
2f0c68f2 | 1995 | } |
38462edf JJ |
1996 | addr_size = DWARF2_FDE_RELOC_SIZE; |
1997 | } | |
1998 | else | |
1999 | { | |
3251495b | 2000 | exp.X_add_number = 0; |
2f0c68f2 | 2001 | exp.X_add_symbol = fde->start_address; |
38462edf JJ |
2002 | addr_size = DWARF2_ADDR_SIZE (stdoutput); |
2003 | emit_expr (&exp, addr_size); | |
2004 | } | |
54cfded0 | 2005 | |
38462edf | 2006 | exp.X_op = O_subtract; |
a4447b93 | 2007 | exp.X_add_symbol = fde->end_address; |
289040ca | 2008 | exp.X_op_symbol = fde->start_address; /* Code length. */ |
3251495b | 2009 | exp.X_add_number = 0; |
38462edf | 2010 | emit_expr (&exp, addr_size); |
54cfded0 | 2011 | |
9b8ae42e | 2012 | augmentation_size = encoding_size (fde->lsda_encoding); |
38462edf JJ |
2013 | if (eh_frame) |
2014 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
9b8ae42e | 2015 | |
2f0c68f2 | 2016 | emit_expr_encoded (&fde->lsda, cie->lsda_encoding, FALSE); |
39b82151 | 2017 | |
a4447b93 | 2018 | for (; first; first = first->next) |
6303c4ae | 2019 | if (CUR_SEG (first) == CUR_SEG (fde)) |
67ed7401 | 2020 | output_cfi_insn (first); |
39b82151 | 2021 | |
4df6ce47 | 2022 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
2023 | symbol_set_value_now (end_address); |
2024 | } | |
2025 | ||
2026 | static struct cie_entry * | |
38462edf JJ |
2027 | select_cie_for_fde (struct fde_entry *fde, bfd_boolean eh_frame, |
2028 | struct cfi_insn_data **pfirst, int align) | |
a4447b93 RH |
2029 | { |
2030 | struct cfi_insn_data *i, *j; | |
2031 | struct cie_entry *cie; | |
2032 | ||
2033 | for (cie = cie_root; cie; cie = cie->next) | |
39b82151 | 2034 | { |
6303c4ae | 2035 | if (CUR_SEG (cie) != CUR_SEG (fde)) |
67ed7401 | 2036 | continue; |
67ed7401 | 2037 | if (cie->return_column != fde->return_column |
9b8ae42e JJ |
2038 | || cie->signal_frame != fde->signal_frame |
2039 | || cie->per_encoding != fde->per_encoding | |
2040 | || cie->lsda_encoding != fde->lsda_encoding) | |
a4447b93 | 2041 | continue; |
9b8ae42e JJ |
2042 | if (cie->per_encoding != DW_EH_PE_omit) |
2043 | { | |
2044 | if (cie->personality.X_op != fde->personality.X_op | |
2045 | || cie->personality.X_add_number | |
2046 | != fde->personality.X_add_number) | |
2047 | continue; | |
2048 | switch (cie->personality.X_op) | |
2049 | { | |
2050 | case O_constant: | |
2051 | if (cie->personality.X_unsigned != fde->personality.X_unsigned) | |
2052 | continue; | |
2053 | break; | |
2054 | case O_symbol: | |
2055 | if (cie->personality.X_add_symbol | |
2056 | != fde->personality.X_add_symbol) | |
2057 | continue; | |
2058 | break; | |
2059 | default: | |
2060 | abort (); | |
2061 | } | |
2062 | } | |
a4447b93 RH |
2063 | for (i = cie->first, j = fde->data; |
2064 | i != cie->last && j != NULL; | |
2065 | i = i->next, j = j->next) | |
39b82151 | 2066 | { |
a4447b93 RH |
2067 | if (i->insn != j->insn) |
2068 | goto fail; | |
2069 | switch (i->insn) | |
2070 | { | |
2071 | case DW_CFA_advance_loc: | |
289040ca NC |
2072 | case DW_CFA_remember_state: |
2073 | /* We reached the first advance/remember in the FDE, | |
2074 | but did not reach the end of the CIE list. */ | |
a4447b93 RH |
2075 | goto fail; |
2076 | ||
2077 | case DW_CFA_offset: | |
2078 | case DW_CFA_def_cfa: | |
2079 | if (i->u.ri.reg != j->u.ri.reg) | |
2080 | goto fail; | |
2081 | if (i->u.ri.offset != j->u.ri.offset) | |
2082 | goto fail; | |
2083 | break; | |
2084 | ||
2085 | case DW_CFA_register: | |
2086 | if (i->u.rr.reg1 != j->u.rr.reg1) | |
2087 | goto fail; | |
2088 | if (i->u.rr.reg2 != j->u.rr.reg2) | |
2089 | goto fail; | |
2090 | break; | |
2091 | ||
2092 | case DW_CFA_def_cfa_register: | |
2be24b54 ML |
2093 | case DW_CFA_restore: |
2094 | case DW_CFA_undefined: | |
2095 | case DW_CFA_same_value: | |
a4447b93 RH |
2096 | if (i->u.r != j->u.r) |
2097 | goto fail; | |
2098 | break; | |
2099 | ||
2100 | case DW_CFA_def_cfa_offset: | |
2101 | if (i->u.i != j->u.i) | |
2102 | goto fail; | |
2103 | break; | |
2104 | ||
cdfbf930 | 2105 | case CFI_escape: |
f1c4cc75 | 2106 | case CFI_val_encoded_addr: |
73e76108 | 2107 | case CFI_label: |
cdfbf930 RH |
2108 | /* Don't bother matching these for now. */ |
2109 | goto fail; | |
2110 | ||
a4447b93 RH |
2111 | default: |
2112 | abort (); | |
2113 | } | |
39b82151 | 2114 | } |
a4447b93 RH |
2115 | |
2116 | /* Success if we reached the end of the CIE list, and we've either | |
289040ca NC |
2117 | run out of FDE entries or we've encountered an advance, |
2118 | remember, or escape. */ | |
e9fad691 AM |
2119 | if (i == cie->last |
2120 | && (!j | |
2121 | || j->insn == DW_CFA_advance_loc | |
289040ca | 2122 | || j->insn == DW_CFA_remember_state |
f1c4cc75 | 2123 | || j->insn == CFI_escape |
73e76108 JB |
2124 | || j->insn == CFI_val_encoded_addr |
2125 | || j->insn == CFI_label)) | |
39b82151 | 2126 | { |
a4447b93 RH |
2127 | *pfirst = j; |
2128 | return cie; | |
39b82151 ML |
2129 | } |
2130 | ||
a4447b93 | 2131 | fail:; |
54cfded0 AM |
2132 | } |
2133 | ||
add39d23 | 2134 | cie = XNEW (struct cie_entry); |
a4447b93 RH |
2135 | cie->next = cie_root; |
2136 | cie_root = cie; | |
6303c4ae | 2137 | SET_CUR_SEG (cie, CUR_SEG (fde)); |
a4447b93 | 2138 | cie->return_column = fde->return_column; |
63752a75 | 2139 | cie->signal_frame = fde->signal_frame; |
9b8ae42e JJ |
2140 | cie->per_encoding = fde->per_encoding; |
2141 | cie->lsda_encoding = fde->lsda_encoding; | |
2142 | cie->personality = fde->personality; | |
a4447b93 | 2143 | cie->first = fde->data; |
54cfded0 | 2144 | |
a4447b93 | 2145 | for (i = cie->first; i ; i = i->next) |
e9fad691 | 2146 | if (i->insn == DW_CFA_advance_loc |
289040ca | 2147 | || i->insn == DW_CFA_remember_state |
f1c4cc75 | 2148 | || i->insn == CFI_escape |
69602580 JB |
2149 | || i->insn == CFI_val_encoded_addr |
2150 | || i->insn == CFI_label) | |
a4447b93 | 2151 | break; |
54cfded0 | 2152 | |
a4447b93 RH |
2153 | cie->last = i; |
2154 | *pfirst = i; | |
38462edf JJ |
2155 | |
2156 | output_cie (cie, eh_frame, align); | |
54cfded0 | 2157 | |
a4447b93 | 2158 | return cie; |
54cfded0 AM |
2159 | } |
2160 | ||
38462edf JJ |
2161 | #ifdef md_reg_eh_frame_to_debug_frame |
2162 | static void | |
6303c4ae | 2163 | cfi_change_reg_numbers (struct cfi_insn_data *insn, segT ccseg) |
38462edf JJ |
2164 | { |
2165 | for (; insn; insn = insn->next) | |
72b016b4 | 2166 | { |
6303c4ae | 2167 | if (CUR_SEG (insn) != ccseg) |
83e12deb | 2168 | continue; |
72b016b4 NC |
2169 | switch (insn->insn) |
2170 | { | |
2171 | case DW_CFA_advance_loc: | |
2172 | case DW_CFA_def_cfa_offset: | |
2173 | case DW_CFA_remember_state: | |
2174 | case DW_CFA_restore_state: | |
2175 | case DW_CFA_GNU_window_save: | |
2176 | case CFI_escape: | |
73e76108 | 2177 | case CFI_label: |
72b016b4 | 2178 | break; |
38462edf | 2179 | |
72b016b4 NC |
2180 | case DW_CFA_def_cfa: |
2181 | case DW_CFA_offset: | |
2182 | insn->u.ri.reg = md_reg_eh_frame_to_debug_frame (insn->u.ri.reg); | |
2183 | break; | |
38462edf | 2184 | |
72b016b4 NC |
2185 | case DW_CFA_def_cfa_register: |
2186 | case DW_CFA_undefined: | |
2187 | case DW_CFA_same_value: | |
2188 | case DW_CFA_restore: | |
2189 | insn->u.r = md_reg_eh_frame_to_debug_frame (insn->u.r); | |
2190 | break; | |
38462edf | 2191 | |
72b016b4 NC |
2192 | case DW_CFA_register: |
2193 | insn->u.rr.reg1 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg1); | |
2194 | insn->u.rr.reg2 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg2); | |
2195 | break; | |
38462edf | 2196 | |
72b016b4 NC |
2197 | case CFI_val_encoded_addr: |
2198 | insn->u.ea.reg = md_reg_eh_frame_to_debug_frame (insn->u.ea.reg); | |
2199 | break; | |
38462edf | 2200 | |
72b016b4 NC |
2201 | default: |
2202 | abort (); | |
2203 | } | |
2204 | } | |
38462edf JJ |
2205 | } |
2206 | #else | |
72b016b4 | 2207 | #define cfi_change_reg_numbers(insn, cseg) do { } while (0) |
38462edf JJ |
2208 | #endif |
2209 | ||
2f0c68f2 CM |
2210 | #if SUPPORT_COMPACT_EH |
2211 | static void | |
2212 | cfi_emit_eh_header (symbolS *sym, bfd_vma addend) | |
72b016b4 | 2213 | { |
2f0c68f2 | 2214 | expressionS exp; |
72b016b4 | 2215 | |
2f0c68f2 CM |
2216 | exp.X_add_number = addend; |
2217 | exp.X_add_symbol = sym; | |
2218 | emit_expr_encoded (&exp, DW_EH_PE_sdata4 | DW_EH_PE_pcrel, FALSE); | |
2219 | } | |
72b016b4 | 2220 | |
2f0c68f2 CM |
2221 | static void |
2222 | output_eh_header (struct fde_entry *fde) | |
2223 | { | |
2224 | char *p; | |
2225 | bfd_vma addend; | |
2226 | ||
2227 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2228 | addend = 0; | |
2229 | else | |
2230 | addend = 1; | |
2231 | ||
2232 | cfi_emit_eh_header (fde->start_address, addend); | |
2233 | ||
2234 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2235 | { | |
2236 | p = frag_more (4); | |
2237 | /* Inline entries always use PR1. */ | |
2238 | *(p++) = 1; | |
2239 | memcpy(p, fde->eh_data, 3); | |
6303c4ae AM |
2240 | } |
2241 | else | |
2242 | { | |
2f0c68f2 CM |
2243 | if (fde->eh_header_type == EH_COMPACT_LEGACY) |
2244 | addend = 1; | |
2245 | else if (fde->eh_header_type == EH_COMPACT_OUTLINE | |
2246 | || fde->eh_header_type == EH_COMPACT_OUTLINE_DONE) | |
2247 | addend = 0; | |
2248 | else | |
2249 | abort (); | |
2250 | cfi_emit_eh_header (fde->eh_loc, addend); | |
6303c4ae | 2251 | } |
72b016b4 | 2252 | } |
2f0c68f2 | 2253 | #endif |
72b016b4 | 2254 | |
54cfded0 | 2255 | void |
a4447b93 | 2256 | cfi_finish (void) |
54cfded0 | 2257 | { |
72b016b4 NC |
2258 | struct cie_entry *cie, *cie_next; |
2259 | segT cfi_seg, ccseg; | |
a4447b93 | 2260 | struct fde_entry *fde; |
72b016b4 NC |
2261 | struct cfi_insn_data *first; |
2262 | int save_flag_traditional_format, seek_next_seg; | |
54cfded0 | 2263 | |
a4447b93 RH |
2264 | if (all_fde_data == 0) |
2265 | return; | |
54cfded0 | 2266 | |
bd5608dc | 2267 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
2268 | if ((all_cfi_sections & CFI_EMIT_eh_frame) != 0 |
2269 | || (all_cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
38462edf | 2270 | { |
38462edf JJ |
2271 | /* Make sure check_eh_frame doesn't do anything with our output. */ |
2272 | save_flag_traditional_format = flag_traditional_format; | |
2273 | flag_traditional_format = 1; | |
eafbc43f | 2274 | |
2f0c68f2 | 2275 | if (!EH_FRAME_LINKONCE) |
6303c4ae AM |
2276 | { |
2277 | /* Open .eh_frame section. */ | |
2278 | cfi_seg = get_cfi_seg (NULL, ".eh_frame", | |
2279 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2280 | | DWARF2_EH_FRAME_READ_ONLY), | |
2281 | EH_FRAME_ALIGNMENT); | |
67ed7401 | 2282 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2283 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2284 | #else |
6303c4ae | 2285 | (void) cfi_seg; |
67ed7401 | 2286 | #endif |
6303c4ae | 2287 | } |
67ed7401 | 2288 | |
72b016b4 | 2289 | do |
83e12deb | 2290 | { |
72b016b4 | 2291 | ccseg = NULL; |
72b016b4 | 2292 | seek_next_seg = 0; |
67ed7401 | 2293 | |
72b016b4 | 2294 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2295 | { |
72b016b4 NC |
2296 | cie_next = cie->next; |
2297 | free ((void *) cie); | |
38462edf | 2298 | } |
72b016b4 | 2299 | cie_root = NULL; |
38462edf | 2300 | |
72b016b4 NC |
2301 | for (fde = all_fde_data; fde ; fde = fde->next) |
2302 | { | |
2f0c68f2 CM |
2303 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 |
2304 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2305 | continue; | |
2306 | ||
2307 | #if SUPPORT_COMPACT_EH | |
2308 | /* Emit a LEGACY format header if we have processed all | |
2309 | of the .cfi directives without encountering either inline or | |
2310 | out-of-line compact unwinding opcodes. */ | |
2311 | if (fde->eh_header_type == EH_COMPACT_HAS_LSDA | |
2312 | || fde->eh_header_type == EH_COMPACT_UNKNOWN) | |
2313 | fde->eh_header_type = EH_COMPACT_LEGACY; | |
2314 | ||
2315 | if (fde->eh_header_type != EH_COMPACT_LEGACY) | |
2316 | continue; | |
2317 | #endif | |
2318 | if (EH_FRAME_LINKONCE) | |
6303c4ae AM |
2319 | { |
2320 | if (HANDLED (fde)) | |
2321 | continue; | |
2322 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2323 | { | |
2324 | seek_next_seg = 2; | |
2325 | continue; | |
2326 | } | |
2327 | if (!seek_next_seg) | |
2328 | { | |
2329 | ccseg = CUR_SEG (fde); | |
2330 | /* Open .eh_frame section. */ | |
2331 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame", | |
2332 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2333 | | DWARF2_EH_FRAME_READ_ONLY), | |
2334 | EH_FRAME_ALIGNMENT); | |
72b016b4 | 2335 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2336 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2337 | #else |
6303c4ae | 2338 | (void) cfi_seg; |
72b016b4 | 2339 | #endif |
6303c4ae AM |
2340 | seek_next_seg = 1; |
2341 | } | |
2342 | SET_HANDLED (fde, 1); | |
72b016b4 | 2343 | } |
72b016b4 NC |
2344 | |
2345 | if (fde->end_address == NULL) | |
2346 | { | |
2347 | as_bad (_("open CFI at the end of file; missing .cfi_endproc directive")); | |
2348 | fde->end_address = fde->start_address; | |
2349 | } | |
2350 | ||
2351 | cie = select_cie_for_fde (fde, TRUE, &first, 2); | |
2f0c68f2 | 2352 | fde->eh_loc = symbol_temp_new_now (); |
72b016b4 NC |
2353 | output_fde (fde, cie, TRUE, first, |
2354 | fde->next == NULL ? EH_FRAME_ALIGNMENT : 2); | |
2355 | } | |
38462edf | 2356 | } |
2f0c68f2 | 2357 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2358 | |
2f0c68f2 | 2359 | if (EH_FRAME_LINKONCE) |
6303c4ae AM |
2360 | for (fde = all_fde_data; fde ; fde = fde->next) |
2361 | SET_HANDLED (fde, 0); | |
38462edf | 2362 | |
2f0c68f2 CM |
2363 | #if SUPPORT_COMPACT_EH |
2364 | if (compact_eh) | |
2365 | { | |
2366 | /* Create remaining out of line table entries. */ | |
2367 | do | |
2368 | { | |
2369 | ccseg = NULL; | |
2370 | seek_next_seg = 0; | |
2371 | ||
2372 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2373 | { | |
2374 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2375 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2376 | continue; | |
2377 | ||
2378 | if (fde->eh_header_type != EH_COMPACT_OUTLINE) | |
2379 | continue; | |
2380 | if (HANDLED (fde)) | |
2381 | continue; | |
2382 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2383 | { | |
2384 | seek_next_seg = 2; | |
2385 | continue; | |
2386 | } | |
2387 | if (!seek_next_seg) | |
2388 | { | |
2389 | ccseg = CUR_SEG (fde); | |
2390 | /* Open .gnu_extab section. */ | |
2391 | get_cfi_seg (ccseg, ".gnu_extab", | |
2392 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2393 | | DWARF2_EH_FRAME_READ_ONLY), | |
2394 | 1); | |
2395 | seek_next_seg = 1; | |
2396 | } | |
2397 | SET_HANDLED (fde, 1); | |
2398 | ||
2399 | frag_align (1, 0, 0); | |
2400 | record_alignment (now_seg, 1); | |
2401 | output_compact_unwind_data (fde, 1); | |
2402 | } | |
2403 | } | |
2404 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); | |
2405 | ||
2406 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2407 | SET_HANDLED (fde, 0); | |
2408 | ||
2409 | /* Create index table fragments. */ | |
2410 | do | |
2411 | { | |
2412 | ccseg = NULL; | |
2413 | seek_next_seg = 0; | |
2414 | ||
2415 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2416 | { | |
2417 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2418 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2419 | continue; | |
2420 | ||
2421 | if (HANDLED (fde)) | |
2422 | continue; | |
2423 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2424 | { | |
2425 | seek_next_seg = 2; | |
2426 | continue; | |
2427 | } | |
2428 | if (!seek_next_seg) | |
2429 | { | |
2430 | ccseg = CUR_SEG (fde); | |
2431 | /* Open .eh_frame_entry section. */ | |
2432 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame_entry", | |
2433 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2434 | | DWARF2_EH_FRAME_READ_ONLY), | |
2435 | 2); | |
2436 | seek_next_seg = 1; | |
2437 | } | |
2438 | SET_HANDLED (fde, 1); | |
2439 | ||
2440 | output_eh_header (fde); | |
2441 | } | |
2442 | } | |
2443 | while (seek_next_seg == 2); | |
2444 | ||
2445 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2446 | SET_HANDLED (fde, 0); | |
2447 | } | |
2448 | #endif /* SUPPORT_COMPACT_EH */ | |
2449 | ||
38462edf JJ |
2450 | flag_traditional_format = save_flag_traditional_format; |
2451 | } | |
2452 | ||
bd5608dc | 2453 | cfi_sections_set = TRUE; |
2f0c68f2 | 2454 | if ((all_cfi_sections & CFI_EMIT_debug_frame) != 0) |
a4447b93 | 2455 | { |
38462edf | 2456 | int alignment = ffs (DWARF2_ADDR_SIZE (stdoutput)) - 1; |
a4447b93 | 2457 | |
6303c4ae AM |
2458 | if (!SUPPORT_FRAME_LINKONCE) |
2459 | get_cfi_seg (NULL, ".debug_frame", | |
2460 | SEC_READONLY | SEC_DEBUGGING, | |
2461 | alignment); | |
2462 | ||
72b016b4 | 2463 | do |
83e12deb | 2464 | { |
72b016b4 | 2465 | ccseg = NULL; |
72b016b4 | 2466 | seek_next_seg = 0; |
67ed7401 | 2467 | |
72b016b4 | 2468 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2469 | { |
72b016b4 NC |
2470 | cie_next = cie->next; |
2471 | free ((void *) cie); | |
38462edf | 2472 | } |
72b016b4 | 2473 | cie_root = NULL; |
38462edf | 2474 | |
72b016b4 NC |
2475 | for (fde = all_fde_data; fde ; fde = fde->next) |
2476 | { | |
2f0c68f2 CM |
2477 | if ((fde->sections & CFI_EMIT_debug_frame) == 0) |
2478 | continue; | |
2479 | ||
6303c4ae AM |
2480 | if (SUPPORT_FRAME_LINKONCE) |
2481 | { | |
2482 | if (HANDLED (fde)) | |
2483 | continue; | |
2484 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2485 | { | |
2486 | seek_next_seg = 2; | |
2487 | continue; | |
2488 | } | |
2489 | if (!seek_next_seg) | |
2490 | { | |
2491 | ccseg = CUR_SEG (fde); | |
2492 | /* Open .debug_frame section. */ | |
2493 | get_cfi_seg (ccseg, ".debug_frame", | |
2494 | SEC_READONLY | SEC_DEBUGGING, | |
2495 | alignment); | |
2496 | seek_next_seg = 1; | |
2497 | } | |
2498 | SET_HANDLED (fde, 1); | |
72b016b4 | 2499 | } |
72b016b4 NC |
2500 | if (fde->end_address == NULL) |
2501 | { | |
2502 | as_bad (_("open CFI at the end of file; missing .cfi_endproc directive")); | |
2503 | fde->end_address = fde->start_address; | |
2504 | } | |
2505 | ||
2506 | fde->per_encoding = DW_EH_PE_omit; | |
2507 | fde->lsda_encoding = DW_EH_PE_omit; | |
2508 | cfi_change_reg_numbers (fde->data, ccseg); | |
2509 | cie = select_cie_for_fde (fde, FALSE, &first, alignment); | |
2510 | output_fde (fde, cie, FALSE, first, alignment); | |
2511 | } | |
38462edf | 2512 | } |
67ed7401 | 2513 | while (SUPPORT_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2514 | |
6303c4ae AM |
2515 | if (SUPPORT_FRAME_LINKONCE) |
2516 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2517 | SET_HANDLED (fde, 0); | |
38462edf | 2518 | } |
54cfded0 | 2519 | } |
0a7b15ff JB |
2520 | |
2521 | #else /* TARGET_USE_CFIPOP */ | |
d58a1929 | 2522 | |
5ff2bd08 | 2523 | /* Emit an intelligible error message for missing support. */ |
d58a1929 RH |
2524 | |
2525 | static void | |
2526 | dot_cfi_dummy (int ignored ATTRIBUTE_UNUSED) | |
2527 | { | |
2528 | as_bad (_("CFI is not supported for this target")); | |
2529 | ignore_rest_of_line (); | |
2530 | } | |
2531 | ||
2532 | const pseudo_typeS cfi_pseudo_table[] = | |
2533 | { | |
2534 | { "cfi_sections", dot_cfi_dummy, 0 }, | |
2535 | { "cfi_startproc", dot_cfi_dummy, 0 }, | |
2536 | { "cfi_endproc", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2537 | { "cfi_fde_data", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2538 | { "cfi_def_cfa", dot_cfi_dummy, 0 }, |
2539 | { "cfi_def_cfa_register", dot_cfi_dummy, 0 }, | |
2540 | { "cfi_def_cfa_offset", dot_cfi_dummy, 0 }, | |
2541 | { "cfi_adjust_cfa_offset", dot_cfi_dummy, 0 }, | |
2542 | { "cfi_offset", dot_cfi_dummy, 0 }, | |
2543 | { "cfi_rel_offset", dot_cfi_dummy, 0 }, | |
2544 | { "cfi_register", dot_cfi_dummy, 0 }, | |
2545 | { "cfi_return_column", dot_cfi_dummy, 0 }, | |
2546 | { "cfi_restore", dot_cfi_dummy, 0 }, | |
2547 | { "cfi_undefined", dot_cfi_dummy, 0 }, | |
2548 | { "cfi_same_value", dot_cfi_dummy, 0 }, | |
2549 | { "cfi_remember_state", dot_cfi_dummy, 0 }, | |
2550 | { "cfi_restore_state", dot_cfi_dummy, 0 }, | |
2551 | { "cfi_window_save", dot_cfi_dummy, 0 }, | |
2552 | { "cfi_escape", dot_cfi_dummy, 0 }, | |
2553 | { "cfi_signal_frame", dot_cfi_dummy, 0 }, | |
2554 | { "cfi_personality", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2555 | { "cfi_personality_id", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2556 | { "cfi_lsda", dot_cfi_dummy, 0 }, |
2557 | { "cfi_val_encoded_addr", dot_cfi_dummy, 0 }, | |
73e76108 | 2558 | { "cfi_label", dot_cfi_dummy, 0 }, |
2f0c68f2 | 2559 | { "cfi_inline_lsda", dot_cfi_dummy, 0 }, |
084303b8 | 2560 | { "cfi_val_offset", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2561 | { NULL, NULL, 0 } |
2562 | }; | |
2563 | ||
0a7b15ff JB |
2564 | void |
2565 | cfi_finish (void) | |
2566 | { | |
2567 | } | |
2568 | #endif /* TARGET_USE_CFIPOP */ |