Commit | Line | Data |
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54cfded0 | 1 | /* dw2gencfi.c - Support for generating Dwarf2 CFI information. |
2571583a | 2 | Copyright (C) 2003-2017 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 | ||
ea0de82e | 160 | static unsigned int |
2f0c68f2 CM |
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 | { | |
ea0de82e | 186 | unsigned int size = encoding_size (encoding); |
2f0c68f2 CM |
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); | |
ea0de82e | 200 | gas_assert (size == howto->bitsize / 8); |
2f0c68f2 CM |
201 | md_number_to_chars (p, 0, size); |
202 | fix_new (frag_now, p - frag_now->fr_literal, size, exp->X_add_symbol, | |
203 | exp->X_add_number, howto->pc_relative, code); | |
204 | } | |
205 | else if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
206 | { | |
207 | #if CFI_DIFF_EXPR_OK | |
208 | expressionS tmp = *exp; | |
209 | tmp.X_op = O_subtract; | |
210 | tmp.X_op_symbol = symbol_temp_new_now (); | |
211 | emit_expr (&tmp, size); | |
212 | #elif defined (tc_cfi_emit_pcrel_expr) | |
213 | tc_cfi_emit_pcrel_expr (exp, size); | |
214 | #else | |
215 | abort (); | |
216 | #endif | |
217 | } | |
218 | else | |
219 | emit_expr (exp, size); | |
220 | } | |
221 | \f | |
72b016b4 NC |
222 | /* Build based on segment the derived .debug_... |
223 | segment name containing origin segment's postfix name part. */ | |
224 | ||
225 | static char * | |
226 | get_debugseg_name (segT seg, const char *base_name) | |
227 | { | |
228 | const char *name; | |
229 | ||
230 | if (!seg) | |
231 | name = ""; | |
232 | else | |
233 | { | |
234 | const char * dollar; | |
235 | const char * dot; | |
236 | ||
237 | name = bfd_get_section_name (stdoutput, seg); | |
238 | ||
239 | dollar = strchr (name, '$'); | |
240 | dot = strchr (name + 1, '.'); | |
241 | ||
242 | if (!dollar && !dot) | |
2f0c68f2 CM |
243 | { |
244 | if (!strcmp (base_name, ".eh_frame_entry") | |
245 | && strcmp (name, ".text") != 0) | |
246 | return concat (base_name, ".", name, NULL); | |
247 | ||
248 | name = ""; | |
249 | } | |
72b016b4 NC |
250 | else if (!dollar) |
251 | name = dot; | |
252 | else if (!dot) | |
253 | name = dollar; | |
254 | else if (dot < dollar) | |
255 | name = dot; | |
256 | else | |
257 | name = dollar; | |
258 | } | |
259 | ||
260 | return concat (base_name, name, NULL); | |
261 | } | |
262 | ||
263 | /* Allocate a dwcfi_seg_list structure. */ | |
264 | ||
265 | static struct dwcfi_seg_list * | |
266 | alloc_debugseg_item (segT seg, int subseg, char *name) | |
267 | { | |
268 | struct dwcfi_seg_list *r; | |
269 | ||
270 | r = (struct dwcfi_seg_list *) | |
271 | xmalloc (sizeof (struct dwcfi_seg_list) + strlen (name)); | |
272 | r->seg = seg; | |
273 | r->subseg = subseg; | |
274 | r->seg_name = name; | |
275 | return r; | |
276 | } | |
277 | ||
278 | static segT | |
279 | is_now_linkonce_segment (void) | |
280 | { | |
2f0c68f2 CM |
281 | if (compact_eh) |
282 | return now_seg; | |
283 | ||
72b016b4 NC |
284 | if ((bfd_get_section_flags (stdoutput, now_seg) |
285 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
286 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE | |
287 | | SEC_LINK_DUPLICATES_SAME_CONTENTS)) != 0) | |
288 | return now_seg; | |
72b016b4 NC |
289 | return NULL; |
290 | } | |
291 | ||
292 | /* Generate debug... segment with same linkonce properties | |
293 | of based segment. */ | |
294 | ||
295 | static segT | |
296 | make_debug_seg (segT cseg, char *name, int sflags) | |
297 | { | |
298 | segT save_seg = now_seg; | |
299 | int save_subseg = now_subseg; | |
300 | segT r; | |
301 | flagword flags; | |
302 | ||
303 | r = subseg_new (name, 0); | |
304 | ||
305 | /* Check if code segment is marked as linked once. */ | |
306 | if (!cseg) | |
307 | flags = 0; | |
308 | else | |
309 | flags = bfd_get_section_flags (stdoutput, cseg) | |
310 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
83e12deb MR |
311 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE |
312 | | SEC_LINK_DUPLICATES_SAME_CONTENTS); | |
72b016b4 NC |
313 | |
314 | /* Add standard section flags. */ | |
315 | flags |= sflags; | |
316 | ||
317 | /* Apply possibly linked once flags to new generated segment, too. */ | |
318 | if (!bfd_set_section_flags (stdoutput, r, flags)) | |
319 | as_bad (_("bfd_set_section_flags: %s"), | |
320 | bfd_errmsg (bfd_get_error ())); | |
321 | ||
322 | /* Restore to previous segment. */ | |
323 | if (save_seg != NULL) | |
324 | subseg_set (save_seg, save_subseg); | |
325 | return r; | |
326 | } | |
327 | ||
328 | static void | |
329 | dwcfi_hash_insert (const char *name, struct dwcfi_seg_list *item) | |
330 | { | |
331 | const char *error_string; | |
332 | ||
333 | if ((error_string = hash_jam (dwcfi_hash, name, (char *) item))) | |
334 | as_fatal (_("Inserting \"%s\" into structure table failed: %s"), | |
335 | name, error_string); | |
336 | } | |
337 | ||
338 | static struct dwcfi_seg_list * | |
339 | dwcfi_hash_find (char *name) | |
340 | { | |
341 | return (struct dwcfi_seg_list *) hash_find (dwcfi_hash, name); | |
342 | } | |
343 | ||
344 | static struct dwcfi_seg_list * | |
345 | dwcfi_hash_find_or_make (segT cseg, const char *base_name, int flags) | |
346 | { | |
347 | struct dwcfi_seg_list *item; | |
348 | char *name; | |
349 | ||
350 | /* Initialize dwcfi_hash once. */ | |
351 | if (!dwcfi_hash) | |
352 | dwcfi_hash = hash_new (); | |
353 | ||
354 | name = get_debugseg_name (cseg, base_name); | |
355 | ||
356 | item = dwcfi_hash_find (name); | |
357 | if (!item) | |
358 | { | |
359 | item = alloc_debugseg_item (make_debug_seg (cseg, name, flags), 0, name); | |
360 | ||
361 | dwcfi_hash_insert (item->seg_name, item); | |
362 | } | |
363 | else | |
364 | free (name); | |
365 | ||
366 | return item; | |
367 | } | |
368 | ||
3251495b RH |
369 | /* ??? Share this with dwarf2cfg.c. */ |
370 | #ifndef TC_DWARF2_EMIT_OFFSET | |
371 | #define TC_DWARF2_EMIT_OFFSET generic_dwarf2_emit_offset | |
372 | ||
373 | /* Create an offset to .dwarf2_*. */ | |
374 | ||
375 | static void | |
376 | generic_dwarf2_emit_offset (symbolS *symbol, unsigned int size) | |
377 | { | |
378 | expressionS exp; | |
379 | ||
380 | exp.X_op = O_symbol; | |
381 | exp.X_add_symbol = symbol; | |
382 | exp.X_add_number = 0; | |
383 | emit_expr (&exp, size); | |
384 | } | |
385 | #endif | |
386 | ||
72b016b4 NC |
387 | struct cfi_escape_data |
388 | { | |
1e9cc1c2 NC |
389 | struct cfi_escape_data *next; |
390 | expressionS exp; | |
391 | }; | |
a4447b93 | 392 | |
a4447b93 | 393 | struct cie_entry |
39b82151 | 394 | { |
a4447b93 | 395 | struct cie_entry *next; |
2f0c68f2 | 396 | #if MULTIPLE_FRAME_SECTIONS |
72b016b4 | 397 | segT cur_seg; |
67ed7401 | 398 | #endif |
a4447b93 RH |
399 | symbolS *start_address; |
400 | unsigned int return_column; | |
63752a75 | 401 | unsigned int signal_frame; |
2f0c68f2 | 402 | unsigned char fde_encoding; |
9b8ae42e JJ |
403 | unsigned char per_encoding; |
404 | unsigned char lsda_encoding; | |
405 | expressionS personality; | |
a4447b93 | 406 | struct cfi_insn_data *first, *last; |
39b82151 ML |
407 | }; |
408 | ||
a4447b93 | 409 | /* List of FDE entries. */ |
72b016b4 | 410 | |
af385746 | 411 | struct fde_entry *all_fde_data; |
a4447b93 | 412 | static struct fde_entry **last_fde_data = &all_fde_data; |
39b82151 ML |
413 | |
414 | /* List of CIEs so that they could be reused. */ | |
415 | static struct cie_entry *cie_root; | |
416 | ||
fa87b337 RH |
417 | /* Stack of old CFI data, for save/restore. */ |
418 | struct cfa_save_data | |
419 | { | |
420 | struct cfa_save_data *next; | |
421 | offsetT cfa_offset; | |
422 | }; | |
423 | ||
ae424f82 JJ |
424 | /* Current open FDE entry. */ |
425 | struct frch_cfi_data | |
426 | { | |
427 | struct fde_entry *cur_fde_data; | |
428 | symbolS *last_address; | |
429 | offsetT cur_cfa_offset; | |
430 | struct cfa_save_data *cfa_save_stack; | |
431 | }; | |
a4447b93 RH |
432 | \f |
433 | /* Construct a new FDE structure and add it to the end of the fde list. */ | |
54cfded0 | 434 | |
a4447b93 RH |
435 | static struct fde_entry * |
436 | alloc_fde_entry (void) | |
437 | { | |
add39d23 | 438 | struct fde_entry *fde = XCNEW (struct fde_entry); |
54cfded0 | 439 | |
add39d23 | 440 | frchain_now->frch_cfi_data = XCNEW (struct frch_cfi_data); |
ae424f82 | 441 | frchain_now->frch_cfi_data->cur_fde_data = fde; |
a4447b93 RH |
442 | *last_fde_data = fde; |
443 | last_fde_data = &fde->next; | |
6303c4ae AM |
444 | SET_CUR_SEG (fde, is_now_linkonce_segment ()); |
445 | SET_HANDLED (fde, 0); | |
a4447b93 RH |
446 | fde->last = &fde->data; |
447 | fde->return_column = DWARF2_DEFAULT_RETURN_COLUMN; | |
9b8ae42e JJ |
448 | fde->per_encoding = DW_EH_PE_omit; |
449 | fde->lsda_encoding = DW_EH_PE_omit; | |
2f0c68f2 | 450 | fde->eh_header_type = EH_COMPACT_UNKNOWN; |
a4447b93 RH |
451 | |
452 | return fde; | |
453 | } | |
454 | ||
455 | /* The following functions are available for a backend to construct its | |
456 | own unwind information, usually from legacy unwind directives. */ | |
457 | ||
458 | /* Construct a new INSN structure and add it to the end of the insn list | |
459 | for the currently active FDE. */ | |
460 | ||
2f0c68f2 CM |
461 | static bfd_boolean cfi_sections_set = FALSE; |
462 | static int cfi_sections = CFI_EMIT_eh_frame; | |
463 | int all_cfi_sections = 0; | |
464 | static struct fde_entry *last_fde; | |
465 | ||
a4447b93 RH |
466 | static struct cfi_insn_data * |
467 | alloc_cfi_insn_data (void) | |
54cfded0 | 468 | { |
add39d23 | 469 | struct cfi_insn_data *insn = XCNEW (struct cfi_insn_data); |
ae424f82 | 470 | struct fde_entry *cur_fde_data = frchain_now->frch_cfi_data->cur_fde_data; |
a4447b93 RH |
471 | |
472 | *cur_fde_data->last = insn; | |
473 | cur_fde_data->last = &insn->next; | |
6303c4ae | 474 | SET_CUR_SEG (insn, is_now_linkonce_segment ()); |
a4447b93 | 475 | return insn; |
54cfded0 AM |
476 | } |
477 | ||
a4447b93 RH |
478 | /* Construct a new FDE structure that begins at LABEL. */ |
479 | ||
72b016b4 | 480 | void |
a4447b93 | 481 | cfi_new_fde (symbolS *label) |
54cfded0 | 482 | { |
a4447b93 RH |
483 | struct fde_entry *fde = alloc_fde_entry (); |
484 | fde->start_address = label; | |
ae424f82 | 485 | frchain_now->frch_cfi_data->last_address = label; |
54cfded0 AM |
486 | } |
487 | ||
a4447b93 RH |
488 | /* End the currently open FDE. */ |
489 | ||
72b016b4 | 490 | void |
a4447b93 | 491 | cfi_end_fde (symbolS *label) |
54cfded0 | 492 | { |
ae424f82 JJ |
493 | frchain_now->frch_cfi_data->cur_fde_data->end_address = label; |
494 | free (frchain_now->frch_cfi_data); | |
495 | frchain_now->frch_cfi_data = NULL; | |
54cfded0 AM |
496 | } |
497 | ||
a4447b93 RH |
498 | /* Set the return column for the current FDE. */ |
499 | ||
500 | void | |
501 | cfi_set_return_column (unsigned regno) | |
54cfded0 | 502 | { |
ae424f82 | 503 | frchain_now->frch_cfi_data->cur_fde_data->return_column = regno; |
a4447b93 | 504 | } |
54cfded0 | 505 | |
2f0c68f2 CM |
506 | void |
507 | cfi_set_sections (void) | |
508 | { | |
509 | frchain_now->frch_cfi_data->cur_fde_data->sections = all_cfi_sections; | |
bd5608dc | 510 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
511 | } |
512 | ||
2be24b54 ML |
513 | /* Universal functions to store new instructions. */ |
514 | ||
515 | static void | |
72b016b4 | 516 | cfi_add_CFA_insn (int insn) |
2be24b54 ML |
517 | { |
518 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
519 | ||
520 | insn_ptr->insn = insn; | |
521 | } | |
522 | ||
523 | static void | |
524 | cfi_add_CFA_insn_reg (int insn, unsigned regno) | |
525 | { | |
526 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
527 | ||
528 | insn_ptr->insn = insn; | |
529 | insn_ptr->u.r = regno; | |
530 | } | |
531 | ||
532 | static void | |
533 | cfi_add_CFA_insn_offset (int insn, offsetT offset) | |
534 | { | |
535 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
536 | ||
537 | insn_ptr->insn = insn; | |
538 | insn_ptr->u.i = offset; | |
539 | } | |
540 | ||
541 | static void | |
542 | cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2) | |
543 | { | |
544 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
545 | ||
546 | insn_ptr->insn = insn; | |
547 | insn_ptr->u.rr.reg1 = reg1; | |
548 | insn_ptr->u.rr.reg2 = reg2; | |
549 | } | |
550 | ||
551 | static void | |
552 | cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset) | |
553 | { | |
554 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
555 | ||
556 | insn_ptr->insn = insn; | |
557 | insn_ptr->u.ri.reg = regno; | |
558 | insn_ptr->u.ri.offset = offset; | |
559 | } | |
560 | ||
a4447b93 | 561 | /* Add a CFI insn to advance the PC from the last address to LABEL. */ |
54cfded0 | 562 | |
a4447b93 RH |
563 | void |
564 | cfi_add_advance_loc (symbolS *label) | |
565 | { | |
566 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
7c0295b1 | 567 | |
a4447b93 | 568 | insn->insn = DW_CFA_advance_loc; |
ae424f82 | 569 | insn->u.ll.lab1 = frchain_now->frch_cfi_data->last_address; |
a4447b93 | 570 | insn->u.ll.lab2 = label; |
54cfded0 | 571 | |
ae424f82 | 572 | frchain_now->frch_cfi_data->last_address = label; |
a4447b93 | 573 | } |
54cfded0 | 574 | |
69602580 JB |
575 | /* Add a CFI insn to label the current position in the CFI segment. */ |
576 | ||
577 | void | |
578 | cfi_add_label (const char *name) | |
579 | { | |
580 | unsigned int len = strlen (name) + 1; | |
581 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
582 | ||
583 | insn->insn = CFI_label; | |
584 | obstack_grow (¬es, name, len); | |
585 | insn->u.sym_name = (char *) obstack_finish (¬es); | |
586 | } | |
587 | ||
a4447b93 RH |
588 | /* Add a DW_CFA_offset record to the CFI data. */ |
589 | ||
590 | void | |
591 | cfi_add_CFA_offset (unsigned regno, offsetT offset) | |
592 | { | |
fa87b337 RH |
593 | unsigned int abs_data_align; |
594 | ||
9c2799c2 | 595 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); |
2be24b54 | 596 | cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset); |
fa87b337 RH |
597 | |
598 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
599 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
600 | if (offset % abs_data_align) | |
601 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
a4447b93 | 602 | } |
54cfded0 | 603 | |
084303b8 AK |
604 | /* Add a DW_CFA_val_offset record to the CFI data. */ |
605 | ||
606 | void | |
607 | cfi_add_CFA_val_offset (unsigned regno, offsetT offset) | |
608 | { | |
609 | unsigned int abs_data_align; | |
610 | ||
611 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); | |
612 | cfi_add_CFA_insn_reg_offset (DW_CFA_val_offset, regno, offset); | |
613 | ||
614 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
615 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
616 | if (offset % abs_data_align) | |
617 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
618 | } | |
619 | ||
a4447b93 | 620 | /* Add a DW_CFA_def_cfa record to the CFI data. */ |
54cfded0 | 621 | |
a4447b93 RH |
622 | void |
623 | cfi_add_CFA_def_cfa (unsigned regno, offsetT offset) | |
624 | { | |
2be24b54 | 625 | cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset); |
ae424f82 | 626 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
54cfded0 AM |
627 | } |
628 | ||
a4447b93 RH |
629 | /* Add a DW_CFA_register record to the CFI data. */ |
630 | ||
631 | void | |
632 | cfi_add_CFA_register (unsigned reg1, unsigned reg2) | |
54cfded0 | 633 | { |
2be24b54 | 634 | cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2); |
54cfded0 AM |
635 | } |
636 | ||
a4447b93 RH |
637 | /* Add a DW_CFA_def_cfa_register record to the CFI data. */ |
638 | ||
639 | void | |
640 | cfi_add_CFA_def_cfa_register (unsigned regno) | |
54cfded0 | 641 | { |
2be24b54 | 642 | cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno); |
54cfded0 AM |
643 | } |
644 | ||
a4447b93 RH |
645 | /* Add a DW_CFA_def_cfa_offset record to the CFI data. */ |
646 | ||
54cfded0 | 647 | void |
a4447b93 | 648 | cfi_add_CFA_def_cfa_offset (offsetT offset) |
54cfded0 | 649 | { |
2be24b54 | 650 | cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset); |
ae424f82 | 651 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
a4447b93 | 652 | } |
54cfded0 | 653 | |
2be24b54 ML |
654 | void |
655 | cfi_add_CFA_restore (unsigned regno) | |
656 | { | |
657 | cfi_add_CFA_insn_reg (DW_CFA_restore, regno); | |
658 | } | |
659 | ||
660 | void | |
661 | cfi_add_CFA_undefined (unsigned regno) | |
662 | { | |
663 | cfi_add_CFA_insn_reg (DW_CFA_undefined, regno); | |
664 | } | |
665 | ||
666 | void | |
667 | cfi_add_CFA_same_value (unsigned regno) | |
668 | { | |
669 | cfi_add_CFA_insn_reg (DW_CFA_same_value, regno); | |
670 | } | |
671 | ||
672 | void | |
673 | cfi_add_CFA_remember_state (void) | |
674 | { | |
fa87b337 RH |
675 | struct cfa_save_data *p; |
676 | ||
2be24b54 | 677 | cfi_add_CFA_insn (DW_CFA_remember_state); |
fa87b337 | 678 | |
add39d23 | 679 | p = XNEW (struct cfa_save_data); |
ae424f82 JJ |
680 | p->cfa_offset = frchain_now->frch_cfi_data->cur_cfa_offset; |
681 | p->next = frchain_now->frch_cfi_data->cfa_save_stack; | |
682 | frchain_now->frch_cfi_data->cfa_save_stack = p; | |
2be24b54 ML |
683 | } |
684 | ||
685 | void | |
686 | cfi_add_CFA_restore_state (void) | |
687 | { | |
fa87b337 RH |
688 | struct cfa_save_data *p; |
689 | ||
2be24b54 | 690 | cfi_add_CFA_insn (DW_CFA_restore_state); |
fa87b337 | 691 | |
ae424f82 | 692 | p = frchain_now->frch_cfi_data->cfa_save_stack; |
fa87b337 RH |
693 | if (p) |
694 | { | |
ae424f82 JJ |
695 | frchain_now->frch_cfi_data->cur_cfa_offset = p->cfa_offset; |
696 | frchain_now->frch_cfi_data->cfa_save_stack = p->next; | |
fa87b337 RH |
697 | free (p); |
698 | } | |
289040ca NC |
699 | else |
700 | as_bad (_("CFI state restore without previous remember")); | |
2be24b54 ML |
701 | } |
702 | ||
a4447b93 RH |
703 | \f |
704 | /* Parse CFI assembler directives. */ | |
54cfded0 | 705 | |
a4447b93 | 706 | static void dot_cfi (int); |
cdfbf930 | 707 | static void dot_cfi_escape (int); |
38462edf | 708 | static void dot_cfi_sections (int); |
a4447b93 RH |
709 | static void dot_cfi_startproc (int); |
710 | static void dot_cfi_endproc (int); | |
2f0c68f2 | 711 | static void dot_cfi_fde_data (int); |
9b8ae42e | 712 | static void dot_cfi_personality (int); |
2f0c68f2 | 713 | static void dot_cfi_personality_id (int); |
9b8ae42e | 714 | static void dot_cfi_lsda (int); |
f1c4cc75 | 715 | static void dot_cfi_val_encoded_addr (int); |
2f0c68f2 | 716 | static void dot_cfi_inline_lsda (int); |
69602580 | 717 | static void dot_cfi_label (int); |
54cfded0 | 718 | |
a4447b93 RH |
719 | const pseudo_typeS cfi_pseudo_table[] = |
720 | { | |
38462edf | 721 | { "cfi_sections", dot_cfi_sections, 0 }, |
a4447b93 RH |
722 | { "cfi_startproc", dot_cfi_startproc, 0 }, |
723 | { "cfi_endproc", dot_cfi_endproc, 0 }, | |
2f0c68f2 | 724 | { "cfi_fde_data", dot_cfi_fde_data, 0 }, |
a4447b93 RH |
725 | { "cfi_def_cfa", dot_cfi, DW_CFA_def_cfa }, |
726 | { "cfi_def_cfa_register", dot_cfi, DW_CFA_def_cfa_register }, | |
727 | { "cfi_def_cfa_offset", dot_cfi, DW_CFA_def_cfa_offset }, | |
728 | { "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset }, | |
729 | { "cfi_offset", dot_cfi, DW_CFA_offset }, | |
fa87b337 | 730 | { "cfi_rel_offset", dot_cfi, CFI_rel_offset }, |
a4447b93 | 731 | { "cfi_register", dot_cfi, DW_CFA_register }, |
2be24b54 ML |
732 | { "cfi_return_column", dot_cfi, CFI_return_column }, |
733 | { "cfi_restore", dot_cfi, DW_CFA_restore }, | |
734 | { "cfi_undefined", dot_cfi, DW_CFA_undefined }, | |
735 | { "cfi_same_value", dot_cfi, DW_CFA_same_value }, | |
736 | { "cfi_remember_state", dot_cfi, DW_CFA_remember_state }, | |
737 | { "cfi_restore_state", dot_cfi, DW_CFA_restore_state }, | |
6749011b | 738 | { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save }, |
cdfbf930 | 739 | { "cfi_escape", dot_cfi_escape, 0 }, |
63752a75 | 740 | { "cfi_signal_frame", dot_cfi, CFI_signal_frame }, |
9b8ae42e | 741 | { "cfi_personality", dot_cfi_personality, 0 }, |
2f0c68f2 | 742 | { "cfi_personality_id", dot_cfi_personality_id, 0 }, |
9b8ae42e | 743 | { "cfi_lsda", dot_cfi_lsda, 0 }, |
f1c4cc75 | 744 | { "cfi_val_encoded_addr", dot_cfi_val_encoded_addr, 0 }, |
2f0c68f2 | 745 | { "cfi_inline_lsda", dot_cfi_inline_lsda, 0 }, |
69602580 | 746 | { "cfi_label", dot_cfi_label, 0 }, |
084303b8 | 747 | { "cfi_val_offset", dot_cfi, DW_CFA_val_offset }, |
a4447b93 RH |
748 | { NULL, NULL, 0 } |
749 | }; | |
54cfded0 AM |
750 | |
751 | static void | |
a4447b93 | 752 | cfi_parse_separator (void) |
54cfded0 | 753 | { |
a4447b93 RH |
754 | SKIP_WHITESPACE (); |
755 | if (*input_line_pointer == ',') | |
756 | input_line_pointer++; | |
757 | else | |
758 | as_bad (_("missing separator")); | |
54cfded0 AM |
759 | } |
760 | ||
a60de03c JB |
761 | #ifndef tc_parse_to_dw2regnum |
762 | static void | |
72b016b4 | 763 | tc_parse_to_dw2regnum (expressionS *exp) |
54cfded0 | 764 | { |
a60de03c | 765 | # ifdef tc_regname_to_dw2regnum |
a4447b93 RH |
766 | SKIP_WHITESPACE (); |
767 | if (is_name_beginner (*input_line_pointer) | |
768 | || (*input_line_pointer == '%' | |
769 | && is_name_beginner (*++input_line_pointer))) | |
770 | { | |
771 | char *name, c; | |
772 | ||
d02603dc | 773 | c = get_symbol_name (& name); |
a4447b93 | 774 | |
a60de03c JB |
775 | exp->X_op = O_constant; |
776 | exp->X_add_number = tc_regname_to_dw2regnum (name); | |
54cfded0 | 777 | |
d02603dc | 778 | restore_line_pointer (c); |
a4447b93 | 779 | } |
a60de03c JB |
780 | else |
781 | # endif | |
782 | expression_and_evaluate (exp); | |
783 | } | |
a4447b93 RH |
784 | #endif |
785 | ||
a60de03c JB |
786 | static unsigned |
787 | cfi_parse_reg (void) | |
788 | { | |
789 | int regno; | |
790 | expressionS exp; | |
791 | ||
792 | tc_parse_to_dw2regnum (&exp); | |
a4447b93 | 793 | switch (exp.X_op) |
54cfded0 | 794 | { |
a4447b93 RH |
795 | case O_register: |
796 | case O_constant: | |
797 | regno = exp.X_add_number; | |
798 | break; | |
799 | ||
800 | default: | |
a60de03c JB |
801 | regno = -1; |
802 | break; | |
803 | } | |
804 | ||
805 | if (regno < 0) | |
806 | { | |
a4447b93 RH |
807 | as_bad (_("bad register expression")); |
808 | regno = 0; | |
54cfded0 AM |
809 | } |
810 | ||
a4447b93 RH |
811 | return regno; |
812 | } | |
813 | ||
814 | static offsetT | |
815 | cfi_parse_const (void) | |
816 | { | |
817 | return get_absolute_expression (); | |
54cfded0 AM |
818 | } |
819 | ||
820 | static void | |
a4447b93 | 821 | dot_cfi (int arg) |
54cfded0 | 822 | { |
a4447b93 RH |
823 | offsetT offset; |
824 | unsigned reg1, reg2; | |
54cfded0 | 825 | |
ae424f82 | 826 | if (frchain_now->frch_cfi_data == NULL) |
54cfded0 AM |
827 | { |
828 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 829 | ignore_rest_of_line (); |
54cfded0 AM |
830 | return; |
831 | } | |
832 | ||
a4447b93 | 833 | /* If the last address was not at the current PC, advance to current. */ |
ae424f82 | 834 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
835 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
836 | != frag_now_fix ())) | |
a4447b93 | 837 | cfi_add_advance_loc (symbol_temp_new_now ()); |
54cfded0 AM |
838 | |
839 | switch (arg) | |
840 | { | |
a4447b93 | 841 | case DW_CFA_offset: |
a4447b93 RH |
842 | reg1 = cfi_parse_reg (); |
843 | cfi_parse_separator (); | |
844 | offset = cfi_parse_const (); | |
2be24b54 ML |
845 | cfi_add_CFA_offset (reg1, offset); |
846 | break; | |
a4447b93 | 847 | |
084303b8 AK |
848 | case DW_CFA_val_offset: |
849 | reg1 = cfi_parse_reg (); | |
850 | cfi_parse_separator (); | |
851 | offset = cfi_parse_const (); | |
852 | cfi_add_CFA_val_offset (reg1, offset); | |
853 | break; | |
854 | ||
fa87b337 RH |
855 | case CFI_rel_offset: |
856 | reg1 = cfi_parse_reg (); | |
857 | cfi_parse_separator (); | |
858 | offset = cfi_parse_const (); | |
ae424f82 JJ |
859 | cfi_add_CFA_offset (reg1, |
860 | offset - frchain_now->frch_cfi_data->cur_cfa_offset); | |
fa87b337 RH |
861 | break; |
862 | ||
2be24b54 ML |
863 | case DW_CFA_def_cfa: |
864 | reg1 = cfi_parse_reg (); | |
865 | cfi_parse_separator (); | |
866 | offset = cfi_parse_const (); | |
867 | cfi_add_CFA_def_cfa (reg1, offset); | |
54cfded0 AM |
868 | break; |
869 | ||
a4447b93 RH |
870 | case DW_CFA_register: |
871 | reg1 = cfi_parse_reg (); | |
872 | cfi_parse_separator (); | |
873 | reg2 = cfi_parse_reg (); | |
a4447b93 | 874 | cfi_add_CFA_register (reg1, reg2); |
39b82151 ML |
875 | break; |
876 | ||
a4447b93 RH |
877 | case DW_CFA_def_cfa_register: |
878 | reg1 = cfi_parse_reg (); | |
879 | cfi_add_CFA_def_cfa_register (reg1); | |
54cfded0 AM |
880 | break; |
881 | ||
a4447b93 RH |
882 | case DW_CFA_def_cfa_offset: |
883 | offset = cfi_parse_const (); | |
884 | cfi_add_CFA_def_cfa_offset (offset); | |
54cfded0 AM |
885 | break; |
886 | ||
54cfded0 | 887 | case CFI_adjust_cfa_offset: |
a4447b93 | 888 | offset = cfi_parse_const (); |
ae424f82 JJ |
889 | cfi_add_CFA_def_cfa_offset (frchain_now->frch_cfi_data->cur_cfa_offset |
890 | + offset); | |
54cfded0 AM |
891 | break; |
892 | ||
2be24b54 | 893 | case DW_CFA_restore: |
b57d375b JB |
894 | for (;;) |
895 | { | |
896 | reg1 = cfi_parse_reg (); | |
897 | cfi_add_CFA_restore (reg1); | |
898 | SKIP_WHITESPACE (); | |
899 | if (*input_line_pointer != ',') | |
900 | break; | |
901 | ++input_line_pointer; | |
902 | } | |
2be24b54 ML |
903 | break; |
904 | ||
905 | case DW_CFA_undefined: | |
b57d375b JB |
906 | for (;;) |
907 | { | |
908 | reg1 = cfi_parse_reg (); | |
909 | cfi_add_CFA_undefined (reg1); | |
910 | SKIP_WHITESPACE (); | |
911 | if (*input_line_pointer != ',') | |
912 | break; | |
913 | ++input_line_pointer; | |
914 | } | |
2be24b54 ML |
915 | break; |
916 | ||
917 | case DW_CFA_same_value: | |
918 | reg1 = cfi_parse_reg (); | |
919 | cfi_add_CFA_same_value (reg1); | |
920 | break; | |
921 | ||
922 | case CFI_return_column: | |
923 | reg1 = cfi_parse_reg (); | |
924 | cfi_set_return_column (reg1); | |
925 | break; | |
926 | ||
927 | case DW_CFA_remember_state: | |
928 | cfi_add_CFA_remember_state (); | |
929 | break; | |
930 | ||
931 | case DW_CFA_restore_state: | |
932 | cfi_add_CFA_restore_state (); | |
933 | break; | |
934 | ||
364b6d8b JJ |
935 | case DW_CFA_GNU_window_save: |
936 | cfi_add_CFA_insn (DW_CFA_GNU_window_save); | |
937 | break; | |
938 | ||
63752a75 | 939 | case CFI_signal_frame: |
ae424f82 | 940 | frchain_now->frch_cfi_data->cur_fde_data->signal_frame = 1; |
63752a75 JJ |
941 | break; |
942 | ||
54cfded0 | 943 | default: |
a4447b93 | 944 | abort (); |
54cfded0 | 945 | } |
54cfded0 | 946 | |
a4447b93 | 947 | demand_empty_rest_of_line (); |
54cfded0 AM |
948 | } |
949 | ||
cdfbf930 RH |
950 | static void |
951 | dot_cfi_escape (int ignored ATTRIBUTE_UNUSED) | |
952 | { | |
953 | struct cfi_escape_data *head, **tail, *e; | |
954 | struct cfi_insn_data *insn; | |
955 | ||
ae424f82 | 956 | if (frchain_now->frch_cfi_data == NULL) |
cdfbf930 RH |
957 | { |
958 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 959 | ignore_rest_of_line (); |
cdfbf930 RH |
960 | return; |
961 | } | |
962 | ||
963 | /* If the last address was not at the current PC, advance to current. */ | |
ae424f82 | 964 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
965 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
966 | != frag_now_fix ())) | |
cdfbf930 RH |
967 | cfi_add_advance_loc (symbol_temp_new_now ()); |
968 | ||
969 | tail = &head; | |
970 | do | |
971 | { | |
add39d23 | 972 | e = XNEW (struct cfi_escape_data); |
cdfbf930 RH |
973 | do_parse_cons_expression (&e->exp, 1); |
974 | *tail = e; | |
975 | tail = &e->next; | |
976 | } | |
977 | while (*input_line_pointer++ == ','); | |
978 | *tail = NULL; | |
979 | ||
980 | insn = alloc_cfi_insn_data (); | |
981 | insn->insn = CFI_escape; | |
982 | insn->u.esc = head; | |
7c9c8381 JB |
983 | |
984 | --input_line_pointer; | |
985 | demand_empty_rest_of_line (); | |
cdfbf930 RH |
986 | } |
987 | ||
9b8ae42e JJ |
988 | static void |
989 | dot_cfi_personality (int ignored ATTRIBUTE_UNUSED) | |
990 | { | |
991 | struct fde_entry *fde; | |
992 | offsetT encoding; | |
993 | ||
994 | if (frchain_now->frch_cfi_data == NULL) | |
995 | { | |
996 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
997 | ignore_rest_of_line (); | |
998 | return; | |
999 | } | |
1000 | ||
1001 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1002 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1003 | if (encoding == DW_EH_PE_omit) |
1004 | { | |
1005 | demand_empty_rest_of_line (); | |
1006 | fde->per_encoding = encoding; | |
1007 | return; | |
1008 | } | |
1009 | ||
1010 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1011 | || ((((encoding & 0x70) != 0 |
3dd24306 | 1012 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
9e1a8675 | 1013 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1014 | #endif |
9e1a8675 AM |
1015 | ) |
1016 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1017 | || (encoding & 7) == DW_EH_PE_uleb128 |
1018 | || (encoding & 7) > DW_EH_PE_udata8) | |
9e1a8675 | 1019 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) |
9b8ae42e JJ |
1020 | { |
1021 | as_bad (_("invalid or unsupported encoding in .cfi_personality")); | |
1022 | ignore_rest_of_line (); | |
1023 | return; | |
1024 | } | |
1025 | ||
1026 | if (*input_line_pointer++ != ',') | |
1027 | { | |
1028 | as_bad (_(".cfi_personality requires encoding and symbol arguments")); | |
1029 | ignore_rest_of_line (); | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | expression_and_evaluate (&fde->personality); | |
1034 | switch (fde->personality.X_op) | |
1035 | { | |
1036 | case O_symbol: | |
1037 | break; | |
1038 | case O_constant: | |
1039 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1040 | encoding = DW_EH_PE_omit; | |
1041 | break; | |
1042 | default: | |
1043 | encoding = DW_EH_PE_omit; | |
1044 | break; | |
1045 | } | |
1046 | ||
1047 | fde->per_encoding = encoding; | |
1048 | ||
1049 | if (encoding == DW_EH_PE_omit) | |
1050 | { | |
1051 | as_bad (_("wrong second argument to .cfi_personality")); | |
1052 | ignore_rest_of_line (); | |
1053 | return; | |
1054 | } | |
1055 | ||
1056 | demand_empty_rest_of_line (); | |
1057 | } | |
1058 | ||
1059 | static void | |
1060 | dot_cfi_lsda (int ignored ATTRIBUTE_UNUSED) | |
1061 | { | |
1062 | struct fde_entry *fde; | |
1063 | offsetT encoding; | |
1064 | ||
1065 | if (frchain_now->frch_cfi_data == NULL) | |
1066 | { | |
1067 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1068 | ignore_rest_of_line (); | |
1069 | return; | |
1070 | } | |
1071 | ||
1072 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1073 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1074 | if (encoding == DW_EH_PE_omit) |
1075 | { | |
1076 | demand_empty_rest_of_line (); | |
1077 | fde->lsda_encoding = encoding; | |
1078 | return; | |
1079 | } | |
1080 | ||
1081 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1082 | || ((((encoding & 0x70) != 0 |
2c678708 | 1083 | #if CFI_DIFF_LSDA_OK || defined tc_cfi_emit_pcrel_expr |
2f0c68f2 | 1084 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1085 | #endif |
9e1a8675 AM |
1086 | ) |
1087 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1088 | || (encoding & 7) == DW_EH_PE_uleb128 |
1089 | || (encoding & 7) > DW_EH_PE_udata8) | |
1090 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) | |
9b8ae42e JJ |
1091 | { |
1092 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1093 | ignore_rest_of_line (); | |
1094 | return; | |
1095 | } | |
1096 | ||
1097 | if (*input_line_pointer++ != ',') | |
1098 | { | |
1099 | as_bad (_(".cfi_lsda requires encoding and symbol arguments")); | |
1100 | ignore_rest_of_line (); | |
1101 | return; | |
1102 | } | |
1103 | ||
1104 | fde->lsda_encoding = encoding; | |
1105 | ||
1106 | expression_and_evaluate (&fde->lsda); | |
1107 | switch (fde->lsda.X_op) | |
1108 | { | |
1109 | case O_symbol: | |
1110 | break; | |
1111 | case O_constant: | |
1112 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1113 | encoding = DW_EH_PE_omit; | |
1114 | break; | |
1115 | default: | |
1116 | encoding = DW_EH_PE_omit; | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | fde->lsda_encoding = encoding; | |
1121 | ||
1122 | if (encoding == DW_EH_PE_omit) | |
1123 | { | |
1124 | as_bad (_("wrong second argument to .cfi_lsda")); | |
1125 | ignore_rest_of_line (); | |
1126 | return; | |
1127 | } | |
1128 | ||
1129 | demand_empty_rest_of_line (); | |
1130 | } | |
1131 | ||
f1c4cc75 RH |
1132 | static void |
1133 | dot_cfi_val_encoded_addr (int ignored ATTRIBUTE_UNUSED) | |
1134 | { | |
1135 | struct cfi_insn_data *insn_ptr; | |
1136 | offsetT encoding; | |
1137 | ||
1138 | if (frchain_now->frch_cfi_data == NULL) | |
1139 | { | |
1140 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1141 | ignore_rest_of_line (); | |
1142 | return; | |
1143 | } | |
1144 | ||
1145 | /* If the last address was not at the current PC, advance to current. */ | |
1146 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
9e1a8675 AM |
1147 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1148 | != frag_now_fix ())) | |
f1c4cc75 RH |
1149 | cfi_add_advance_loc (symbol_temp_new_now ()); |
1150 | ||
1151 | insn_ptr = alloc_cfi_insn_data (); | |
1152 | insn_ptr->insn = CFI_val_encoded_addr; | |
72b016b4 | 1153 | |
f1c4cc75 RH |
1154 | insn_ptr->u.ea.reg = cfi_parse_reg (); |
1155 | ||
1156 | cfi_parse_separator (); | |
1157 | encoding = cfi_parse_const (); | |
1158 | if ((encoding & 0xff) != encoding | |
1159 | || ((encoding & 0x70) != 0 | |
1160 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr | |
1161 | && (encoding & 0x70) != DW_EH_PE_pcrel | |
1162 | #endif | |
1163 | ) | |
9e1a8675 | 1164 | /* leb128 can be handled, but does something actually need it? */ |
f1c4cc75 RH |
1165 | || (encoding & 7) == DW_EH_PE_uleb128 |
1166 | || (encoding & 7) > DW_EH_PE_udata8) | |
1167 | { | |
1168 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1169 | encoding = DW_EH_PE_omit; | |
1170 | } | |
1171 | ||
1172 | cfi_parse_separator (); | |
1173 | expression_and_evaluate (&insn_ptr->u.ea.exp); | |
1174 | switch (insn_ptr->u.ea.exp.X_op) | |
1175 | { | |
1176 | case O_symbol: | |
1177 | break; | |
1178 | case O_constant: | |
1179 | if ((encoding & 0x70) != DW_EH_PE_pcrel) | |
83e12deb | 1180 | break; |
1a0670f3 | 1181 | /* Fall through. */ |
f1c4cc75 RH |
1182 | default: |
1183 | encoding = DW_EH_PE_omit; | |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | insn_ptr->u.ea.encoding = encoding; | |
1188 | if (encoding == DW_EH_PE_omit) | |
1189 | { | |
1190 | as_bad (_("wrong third argument to .cfi_val_encoded_addr")); | |
1191 | ignore_rest_of_line (); | |
1192 | return; | |
1193 | } | |
1194 | ||
1195 | demand_empty_rest_of_line (); | |
1196 | } | |
1197 | ||
69602580 JB |
1198 | static void |
1199 | dot_cfi_label (int ignored ATTRIBUTE_UNUSED) | |
1200 | { | |
1201 | char *name = read_symbol_name (); | |
1202 | ||
1203 | if (name == NULL) | |
1204 | return; | |
1205 | ||
1206 | /* If the last address was not at the current PC, advance to current. */ | |
1207 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
9e1a8675 AM |
1208 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1209 | != frag_now_fix ())) | |
69602580 JB |
1210 | cfi_add_advance_loc (symbol_temp_new_now ()); |
1211 | ||
1212 | cfi_add_label (name); | |
92e18d93 | 1213 | free (name); |
69602580 JB |
1214 | |
1215 | demand_empty_rest_of_line (); | |
1216 | } | |
1217 | ||
38462edf JJ |
1218 | static void |
1219 | dot_cfi_sections (int ignored ATTRIBUTE_UNUSED) | |
1220 | { | |
1221 | int sections = 0; | |
1222 | ||
1223 | SKIP_WHITESPACE (); | |
d02603dc | 1224 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
38462edf JJ |
1225 | while (1) |
1226 | { | |
d02603dc | 1227 | char * saved_ilp; |
38462edf JJ |
1228 | char *name, c; |
1229 | ||
d02603dc NC |
1230 | saved_ilp = input_line_pointer; |
1231 | c = get_symbol_name (& name); | |
38462edf | 1232 | |
72b016b4 NC |
1233 | if (strncmp (name, ".eh_frame", sizeof ".eh_frame") == 0 |
1234 | && name[9] != '_') | |
38462edf | 1235 | sections |= CFI_EMIT_eh_frame; |
72b016b4 | 1236 | else if (strncmp (name, ".debug_frame", sizeof ".debug_frame") == 0) |
38462edf | 1237 | sections |= CFI_EMIT_debug_frame; |
2f0c68f2 | 1238 | #if SUPPORT_COMPACT_EH |
9e1a8675 AM |
1239 | else if (strncmp (name, ".eh_frame_entry", |
1240 | sizeof ".eh_frame_entry") == 0) | |
2f0c68f2 CM |
1241 | { |
1242 | compact_eh = TRUE; | |
1243 | sections |= CFI_EMIT_eh_frame_compact; | |
1244 | } | |
1245 | #endif | |
1bce6bd8 PB |
1246 | #ifdef tc_cfi_section_name |
1247 | else if (strcmp (name, tc_cfi_section_name) == 0) | |
1248 | sections |= CFI_EMIT_target; | |
1249 | #endif | |
38462edf JJ |
1250 | else |
1251 | { | |
1252 | *input_line_pointer = c; | |
d02603dc | 1253 | input_line_pointer = saved_ilp; |
38462edf JJ |
1254 | break; |
1255 | } | |
1256 | ||
1257 | *input_line_pointer = c; | |
d02603dc | 1258 | SKIP_WHITESPACE_AFTER_NAME (); |
38462edf JJ |
1259 | if (*input_line_pointer == ',') |
1260 | { | |
1261 | name = input_line_pointer++; | |
1262 | SKIP_WHITESPACE (); | |
9e1a8675 AM |
1263 | if (!is_name_beginner (*input_line_pointer) |
1264 | && *input_line_pointer != '"') | |
38462edf JJ |
1265 | { |
1266 | input_line_pointer = name; | |
1267 | break; | |
1268 | } | |
1269 | } | |
9e1a8675 AM |
1270 | else if (is_name_beginner (*input_line_pointer) |
1271 | || *input_line_pointer == '"') | |
38462edf JJ |
1272 | break; |
1273 | } | |
1274 | ||
1275 | demand_empty_rest_of_line (); | |
3d3424e9 MF |
1276 | if (cfi_sections_set |
1277 | && (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) | |
9e1a8675 AM |
1278 | && ((cfi_sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) |
1279 | != (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)))) | |
2f0c68f2 | 1280 | as_bad (_("inconsistent uses of .cfi_sections")); |
38462edf JJ |
1281 | cfi_sections = sections; |
1282 | } | |
1283 | ||
54cfded0 | 1284 | static void |
a4447b93 | 1285 | dot_cfi_startproc (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1286 | { |
a4447b93 | 1287 | int simple = 0; |
39b82151 | 1288 | |
ae424f82 | 1289 | if (frchain_now->frch_cfi_data != NULL) |
54cfded0 AM |
1290 | { |
1291 | as_bad (_("previous CFI entry not closed (missing .cfi_endproc)")); | |
7c9c8381 | 1292 | ignore_rest_of_line (); |
54cfded0 AM |
1293 | return; |
1294 | } | |
1295 | ||
a4447b93 | 1296 | cfi_new_fde (symbol_temp_new_now ()); |
39b82151 | 1297 | |
a4447b93 | 1298 | SKIP_WHITESPACE (); |
d02603dc | 1299 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
a4447b93 | 1300 | { |
d02603dc | 1301 | char * saved_ilp = input_line_pointer; |
a4447b93 | 1302 | char *name, c; |
54cfded0 | 1303 | |
d02603dc | 1304 | c = get_symbol_name (& name); |
54cfded0 | 1305 | |
a4447b93 RH |
1306 | if (strcmp (name, "simple") == 0) |
1307 | { | |
1308 | simple = 1; | |
d02603dc | 1309 | restore_line_pointer (c); |
a4447b93 RH |
1310 | } |
1311 | else | |
d02603dc | 1312 | input_line_pointer = saved_ilp; |
a4447b93 RH |
1313 | } |
1314 | demand_empty_rest_of_line (); | |
1315 | ||
bd5608dc | 1316 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1317 | all_cfi_sections |= cfi_sections; |
1318 | cfi_set_sections (); | |
ae424f82 | 1319 | frchain_now->frch_cfi_data->cur_cfa_offset = 0; |
a4447b93 | 1320 | if (!simple) |
39b82151 | 1321 | tc_cfi_frame_initial_instructions (); |
1bce6bd8 PB |
1322 | |
1323 | if ((cfi_sections & CFI_EMIT_target) != 0) | |
1324 | tc_cfi_startproc (); | |
54cfded0 AM |
1325 | } |
1326 | ||
a4447b93 RH |
1327 | static void |
1328 | dot_cfi_endproc (int ignored ATTRIBUTE_UNUSED) | |
1329 | { | |
ae424f82 | 1330 | if (frchain_now->frch_cfi_data == NULL) |
a4447b93 RH |
1331 | { |
1332 | as_bad (_(".cfi_endproc without corresponding .cfi_startproc")); | |
7c9c8381 | 1333 | ignore_rest_of_line (); |
a4447b93 RH |
1334 | return; |
1335 | } | |
54cfded0 | 1336 | |
2f0c68f2 | 1337 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; |
1bce6bd8 | 1338 | |
a4447b93 | 1339 | cfi_end_fde (symbol_temp_new_now ()); |
7c9c8381 JB |
1340 | |
1341 | demand_empty_rest_of_line (); | |
1bce6bd8 | 1342 | |
bd5608dc | 1343 | cfi_sections_set = TRUE; |
1bce6bd8 | 1344 | if ((cfi_sections & CFI_EMIT_target) != 0) |
2f0c68f2 | 1345 | tc_cfi_endproc (last_fde); |
a4447b93 | 1346 | } |
39b82151 | 1347 | |
2f0c68f2 CM |
1348 | static segT |
1349 | get_cfi_seg (segT cseg, const char *base, flagword flags, int align) | |
54cfded0 | 1350 | { |
2f0c68f2 CM |
1351 | /* Exclude .debug_frame sections for Compact EH. */ |
1352 | if (SUPPORT_FRAME_LINKONCE || ((flags & SEC_DEBUGGING) == 0 && compact_eh)) | |
1353 | { | |
1354 | struct dwcfi_seg_list *l; | |
1355 | ||
1356 | l = dwcfi_hash_find_or_make (cseg, base, flags); | |
1357 | ||
1358 | cseg = l->seg; | |
1359 | subseg_set (cseg, l->subseg); | |
1360 | } | |
1361 | else | |
1362 | { | |
1363 | cseg = subseg_new (base, 0); | |
1364 | bfd_set_section_flags (stdoutput, cseg, flags); | |
1365 | } | |
1366 | record_alignment (cseg, align); | |
1367 | return cseg; | |
a4447b93 | 1368 | } |
54cfded0 | 1369 | |
2f0c68f2 CM |
1370 | #if SUPPORT_COMPACT_EH |
1371 | static void | |
1372 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1373 | { | |
1374 | struct fde_entry *fde; | |
54cfded0 | 1375 | |
2f0c68f2 CM |
1376 | if (frchain_now->frch_cfi_data == NULL) |
1377 | { | |
1378 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1379 | ignore_rest_of_line (); | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1384 | fde->personality_id = cfi_parse_const (); | |
1385 | demand_empty_rest_of_line (); | |
1386 | ||
1387 | if (fde->personality_id == 0 || fde->personality_id > 3) | |
1388 | { | |
1389 | as_bad (_("wrong argument to .cfi_personality_id")); | |
1390 | return; | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | static void | |
1395 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) | |
a4447b93 | 1396 | { |
2f0c68f2 CM |
1397 | if (frchain_now->frch_cfi_data == NULL) |
1398 | { | |
1399 | as_bad (_(".cfi_fde_data without corresponding .cfi_startproc")); | |
1400 | ignore_rest_of_line (); | |
1401 | return; | |
1402 | } | |
1403 | ||
1404 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1405 | ||
bd5608dc | 1406 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1407 | if ((cfi_sections & CFI_EMIT_target) != 0 |
1408 | || (cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
1409 | { | |
1410 | struct cfi_escape_data *head, **tail, *e; | |
1411 | int num_ops = 0; | |
1412 | ||
1413 | tail = &head; | |
1414 | if (!is_it_end_of_statement ()) | |
1415 | { | |
1416 | num_ops = 0; | |
1417 | do | |
1418 | { | |
add39d23 | 1419 | e = XNEW (struct cfi_escape_data); |
2f0c68f2 CM |
1420 | do_parse_cons_expression (&e->exp, 1); |
1421 | *tail = e; | |
1422 | tail = &e->next; | |
1423 | num_ops++; | |
1424 | } | |
1425 | while (*input_line_pointer++ == ','); | |
1426 | --input_line_pointer; | |
1427 | } | |
1428 | *tail = NULL; | |
1429 | ||
1430 | if (last_fde->lsda_encoding != DW_EH_PE_omit) | |
1431 | last_fde->eh_header_type = EH_COMPACT_HAS_LSDA; | |
1432 | else if (num_ops <= 3 && last_fde->per_encoding == DW_EH_PE_omit) | |
1433 | last_fde->eh_header_type = EH_COMPACT_INLINE; | |
1434 | else | |
1435 | last_fde->eh_header_type = EH_COMPACT_OUTLINE; | |
1436 | ||
1437 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1438 | num_ops = 3; | |
1439 | ||
1440 | last_fde->eh_data_size = num_ops; | |
add39d23 | 1441 | last_fde->eh_data = XNEWVEC (bfd_byte, num_ops); |
2f0c68f2 CM |
1442 | num_ops = 0; |
1443 | while (head) | |
1444 | { | |
1445 | e = head; | |
1446 | head = e->next; | |
1447 | last_fde->eh_data[num_ops++] = e->exp.X_add_number; | |
1448 | free (e); | |
1449 | } | |
1450 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1451 | while (num_ops < 3) | |
1452 | last_fde->eh_data[num_ops++] = tc_compact_eh_opcode_stop; | |
1453 | } | |
1454 | ||
1455 | demand_empty_rest_of_line (); | |
a4447b93 | 1456 | } |
54cfded0 | 1457 | |
2f0c68f2 CM |
1458 | /* Function to emit the compact unwinding opcodes stored in the |
1459 | fde's eh_data field. The end of the opcode data will be | |
1460 | padded to the value in align. */ | |
54cfded0 | 1461 | |
2f0c68f2 CM |
1462 | static void |
1463 | output_compact_unwind_data (struct fde_entry *fde, int align) | |
a4447b93 | 1464 | { |
2f0c68f2 CM |
1465 | int data_size = fde->eh_data_size + 2; |
1466 | int align_padding; | |
1467 | int amask; | |
1468 | char *p; | |
1469 | ||
1470 | fde->eh_loc = symbol_temp_new_now (); | |
1471 | ||
1472 | p = frag_more (1); | |
1473 | if (fde->personality_id != 0) | |
1474 | *p = fde->personality_id; | |
1475 | else if (fde->per_encoding != DW_EH_PE_omit) | |
1476 | { | |
1477 | *p = 0; | |
1478 | emit_expr_encoded (&fde->personality, fde->per_encoding, FALSE); | |
1479 | data_size += encoding_size (fde->per_encoding); | |
1480 | } | |
1481 | else | |
1482 | *p = 1; | |
1483 | ||
1484 | amask = (1 << align) - 1; | |
1485 | align_padding = ((data_size + amask) & ~amask) - data_size; | |
1486 | ||
1487 | p = frag_more (fde->eh_data_size + 1 + align_padding); | |
1488 | memcpy (p, fde->eh_data, fde->eh_data_size); | |
1489 | p += fde->eh_data_size; | |
1490 | ||
1491 | while (align_padding-- > 0) | |
1492 | *(p++) = tc_compact_eh_opcode_pad; | |
1493 | ||
1494 | *(p++) = tc_compact_eh_opcode_stop; | |
1495 | fde->eh_header_type = EH_COMPACT_OUTLINE_DONE; | |
a4447b93 RH |
1496 | } |
1497 | ||
2f0c68f2 CM |
1498 | /* Handle the .cfi_inline_lsda directive. */ |
1499 | static void | |
1500 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) | |
1501 | { | |
1502 | segT ccseg; | |
1503 | int align; | |
1504 | long max_alignment = 28; | |
1505 | ||
1506 | if (!last_fde) | |
1507 | { | |
1508 | as_bad (_("unexpected .cfi_inline_lsda")); | |
1509 | ignore_rest_of_line (); | |
1510 | return; | |
1511 | } | |
1512 | ||
1513 | if ((last_fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
1514 | { | |
1515 | as_bad (_(".cfi_inline_lsda not valid for this frame")); | |
1516 | ignore_rest_of_line (); | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | if (last_fde->eh_header_type != EH_COMPACT_UNKNOWN | |
1521 | && last_fde->eh_header_type != EH_COMPACT_HAS_LSDA) | |
1522 | { | |
1523 | as_bad (_(".cfi_inline_lsda seen for frame without .cfi_lsda")); | |
1524 | ignore_rest_of_line (); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | #ifdef md_flush_pending_output | |
1529 | md_flush_pending_output (); | |
1530 | #endif | |
1531 | ||
1532 | align = get_absolute_expression (); | |
1533 | if (align > max_alignment) | |
1534 | { | |
1535 | align = max_alignment; | |
1536 | as_bad (_("Alignment too large: %d. assumed."), align); | |
1537 | } | |
1538 | else if (align < 0) | |
1539 | { | |
1540 | as_warn (_("Alignment negative: 0 assumed.")); | |
1541 | align = 0; | |
1542 | } | |
1543 | ||
1544 | demand_empty_rest_of_line (); | |
1545 | ccseg = CUR_SEG (last_fde); | |
54cfded0 | 1546 | |
2f0c68f2 CM |
1547 | /* Open .gnu_extab section. */ |
1548 | get_cfi_seg (ccseg, ".gnu_extab", | |
1549 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
1550 | | DWARF2_EH_FRAME_READ_ONLY), | |
1551 | 1); | |
1552 | ||
1553 | frag_align (align, 0, 0); | |
1554 | record_alignment (now_seg, align); | |
1555 | if (last_fde->eh_header_type == EH_COMPACT_HAS_LSDA) | |
1556 | output_compact_unwind_data (last_fde, align); | |
1557 | ||
1558 | last_fde = NULL; | |
1559 | ||
1560 | return; | |
1561 | } | |
1562 | #else /* !SUPPORT_COMPACT_EH */ | |
a4447b93 | 1563 | static void |
2f0c68f2 | 1564 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) |
a4447b93 | 1565 | { |
2f0c68f2 CM |
1566 | as_bad (_(".cfi_inline_lsda is not supported for this target")); |
1567 | ignore_rest_of_line (); | |
54cfded0 AM |
1568 | } |
1569 | ||
a4447b93 | 1570 | static void |
2f0c68f2 | 1571 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1572 | { |
2f0c68f2 CM |
1573 | as_bad (_(".cfi_fde_data is not supported for this target")); |
1574 | ignore_rest_of_line (); | |
a4447b93 | 1575 | } |
54cfded0 | 1576 | |
2f0c68f2 CM |
1577 | static void |
1578 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1579 | { | |
1580 | as_bad (_(".cfi_personality_id is not supported for this target")); | |
1581 | ignore_rest_of_line (); | |
1582 | } | |
1583 | #endif | |
1584 | \f | |
a4447b93 RH |
1585 | static void |
1586 | output_cfi_insn (struct cfi_insn_data *insn) | |
1587 | { | |
1588 | offsetT offset; | |
1589 | unsigned int regno; | |
54cfded0 | 1590 | |
a4447b93 | 1591 | switch (insn->insn) |
54cfded0 | 1592 | { |
a4447b93 RH |
1593 | case DW_CFA_advance_loc: |
1594 | { | |
1595 | symbolS *from = insn->u.ll.lab1; | |
1596 | symbolS *to = insn->u.ll.lab2; | |
1597 | ||
1598 | if (symbol_get_frag (to) == symbol_get_frag (from)) | |
1599 | { | |
1600 | addressT delta = S_GET_VALUE (to) - S_GET_VALUE (from); | |
1601 | addressT scaled = delta / DWARF2_LINE_MIN_INSN_LENGTH; | |
1602 | ||
1603 | if (scaled <= 0x3F) | |
1604 | out_one (DW_CFA_advance_loc + scaled); | |
395e8345 | 1605 | else if (scaled <= 0xFF) |
a4447b93 | 1606 | { |
9b8ae42e | 1607 | out_one (DW_CFA_advance_loc1); |
395e8345 | 1608 | out_one (scaled); |
a4447b93 | 1609 | } |
395e8345 | 1610 | else if (scaled <= 0xFFFF) |
a4447b93 | 1611 | { |
9b8ae42e | 1612 | out_one (DW_CFA_advance_loc2); |
395e8345 | 1613 | out_two (scaled); |
a4447b93 RH |
1614 | } |
1615 | else | |
1616 | { | |
9b8ae42e | 1617 | out_one (DW_CFA_advance_loc4); |
395e8345 | 1618 | out_four (scaled); |
a4447b93 RH |
1619 | } |
1620 | } | |
1621 | else | |
1622 | { | |
1623 | expressionS exp; | |
1624 | ||
1625 | exp.X_op = O_subtract; | |
1626 | exp.X_add_symbol = to; | |
1627 | exp.X_op_symbol = from; | |
1628 | exp.X_add_number = 0; | |
1629 | ||
1630 | /* The code in ehopt.c expects that one byte of the encoding | |
1631 | is already allocated to the frag. This comes from the way | |
1632 | that it scans the .eh_frame section looking first for the | |
1633 | .byte DW_CFA_advance_loc4. */ | |
1fbfe785 | 1634 | *frag_more (1) = DW_CFA_advance_loc4; |
a4447b93 RH |
1635 | |
1636 | frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3, | |
1637 | make_expr_symbol (&exp), frag_now_fix () - 1, | |
1638 | (char *) frag_now); | |
1639 | } | |
1640 | } | |
1641 | break; | |
1642 | ||
1643 | case DW_CFA_def_cfa: | |
1644 | offset = insn->u.ri.offset; | |
1645 | if (offset < 0) | |
54cfded0 | 1646 | { |
a4447b93 RH |
1647 | out_one (DW_CFA_def_cfa_sf); |
1648 | out_uleb128 (insn->u.ri.reg); | |
dcb45a06 | 1649 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
54cfded0 AM |
1650 | } |
1651 | else | |
1652 | { | |
a4447b93 RH |
1653 | out_one (DW_CFA_def_cfa); |
1654 | out_uleb128 (insn->u.ri.reg); | |
1655 | out_uleb128 (offset); | |
54cfded0 AM |
1656 | } |
1657 | break; | |
1658 | ||
a4447b93 | 1659 | case DW_CFA_def_cfa_register: |
2be24b54 ML |
1660 | case DW_CFA_undefined: |
1661 | case DW_CFA_same_value: | |
1662 | out_one (insn->insn); | |
1663 | out_uleb128 (insn->u.r); | |
54cfded0 AM |
1664 | break; |
1665 | ||
a4447b93 RH |
1666 | case DW_CFA_def_cfa_offset: |
1667 | offset = insn->u.i; | |
1668 | if (offset < 0) | |
1669 | { | |
1670 | out_one (DW_CFA_def_cfa_offset_sf); | |
dcb45a06 | 1671 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
a4447b93 RH |
1672 | } |
1673 | else | |
1674 | { | |
1675 | out_one (DW_CFA_def_cfa_offset); | |
1676 | out_uleb128 (offset); | |
1677 | } | |
54cfded0 AM |
1678 | break; |
1679 | ||
2be24b54 ML |
1680 | case DW_CFA_restore: |
1681 | regno = insn->u.r; | |
1682 | if (regno <= 0x3F) | |
1683 | { | |
1684 | out_one (DW_CFA_restore + regno); | |
1685 | } | |
1686 | else | |
1687 | { | |
1688 | out_one (DW_CFA_restore_extended); | |
1689 | out_uleb128 (regno); | |
1690 | } | |
1691 | break; | |
1692 | ||
a4447b93 RH |
1693 | case DW_CFA_offset: |
1694 | regno = insn->u.ri.reg; | |
1695 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1696 | if (offset < 0) | |
1697 | { | |
1233ae62 | 1698 | out_one (DW_CFA_offset_extended_sf); |
a4447b93 RH |
1699 | out_uleb128 (regno); |
1700 | out_sleb128 (offset); | |
1701 | } | |
1702 | else if (regno <= 0x3F) | |
1703 | { | |
1704 | out_one (DW_CFA_offset + regno); | |
1705 | out_uleb128 (offset); | |
1706 | } | |
54cfded0 AM |
1707 | else |
1708 | { | |
a4447b93 RH |
1709 | out_one (DW_CFA_offset_extended); |
1710 | out_uleb128 (regno); | |
1711 | out_uleb128 (offset); | |
54cfded0 | 1712 | } |
54cfded0 AM |
1713 | break; |
1714 | ||
084303b8 AK |
1715 | case DW_CFA_val_offset: |
1716 | regno = insn->u.ri.reg; | |
1717 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1718 | if (offset < 0) | |
1719 | { | |
1720 | out_one (DW_CFA_val_offset_sf); | |
1721 | out_uleb128 (regno); | |
1722 | out_sleb128 (offset); | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | out_one (DW_CFA_val_offset); | |
1727 | out_uleb128 (regno); | |
1728 | out_uleb128 (offset); | |
1729 | } | |
1730 | break; | |
1731 | ||
a4447b93 RH |
1732 | case DW_CFA_register: |
1733 | out_one (DW_CFA_register); | |
1734 | out_uleb128 (insn->u.rr.reg1); | |
1735 | out_uleb128 (insn->u.rr.reg2); | |
39b82151 ML |
1736 | break; |
1737 | ||
2be24b54 ML |
1738 | case DW_CFA_remember_state: |
1739 | case DW_CFA_restore_state: | |
2be24b54 | 1740 | out_one (insn->insn); |
54cfded0 AM |
1741 | break; |
1742 | ||
364b6d8b JJ |
1743 | case DW_CFA_GNU_window_save: |
1744 | out_one (DW_CFA_GNU_window_save); | |
1745 | break; | |
1746 | ||
cdfbf930 RH |
1747 | case CFI_escape: |
1748 | { | |
1749 | struct cfi_escape_data *e; | |
1750 | for (e = insn->u.esc; e ; e = e->next) | |
1751 | emit_expr (&e->exp, 1); | |
1752 | break; | |
1753 | } | |
1754 | ||
f1c4cc75 RH |
1755 | case CFI_val_encoded_addr: |
1756 | { | |
83e12deb | 1757 | unsigned encoding = insn->u.ea.encoding; |
2f0c68f2 | 1758 | offsetT enc_size; |
f1c4cc75 RH |
1759 | |
1760 | if (encoding == DW_EH_PE_omit) | |
1761 | break; | |
1762 | out_one (DW_CFA_val_expression); | |
1763 | out_uleb128 (insn->u.ea.reg); | |
1764 | ||
83e12deb | 1765 | switch (encoding & 0x7) |
f1c4cc75 RH |
1766 | { |
1767 | case DW_EH_PE_absptr: | |
2f0c68f2 | 1768 | enc_size = DWARF2_ADDR_SIZE (stdoutput); |
f1c4cc75 RH |
1769 | break; |
1770 | case DW_EH_PE_udata2: | |
2f0c68f2 | 1771 | enc_size = 2; |
f1c4cc75 RH |
1772 | break; |
1773 | case DW_EH_PE_udata4: | |
2f0c68f2 | 1774 | enc_size = 4; |
f1c4cc75 RH |
1775 | break; |
1776 | case DW_EH_PE_udata8: | |
2f0c68f2 | 1777 | enc_size = 8; |
f1c4cc75 RH |
1778 | break; |
1779 | default: | |
1780 | abort (); | |
1781 | } | |
1782 | ||
1783 | /* If the user has requested absolute encoding, | |
1784 | then use the smaller DW_OP_addr encoding. */ | |
1785 | if (insn->u.ea.encoding == DW_EH_PE_absptr) | |
1786 | { | |
2f0c68f2 | 1787 | out_uleb128 (1 + enc_size); |
f1c4cc75 RH |
1788 | out_one (DW_OP_addr); |
1789 | } | |
1790 | else | |
1791 | { | |
2f0c68f2 | 1792 | out_uleb128 (1 + 1 + enc_size); |
f1c4cc75 RH |
1793 | out_one (DW_OP_GNU_encoded_addr); |
1794 | out_one (encoding); | |
1795 | ||
1796 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1797 | { | |
1798 | #if CFI_DIFF_EXPR_OK | |
1799 | insn->u.ea.exp.X_op = O_subtract; | |
1800 | insn->u.ea.exp.X_op_symbol = symbol_temp_new_now (); | |
1801 | #elif defined (tc_cfi_emit_pcrel_expr) | |
2f0c68f2 | 1802 | tc_cfi_emit_pcrel_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1803 | break; |
1804 | #else | |
1805 | abort (); | |
1806 | #endif | |
1807 | } | |
1808 | } | |
2f0c68f2 | 1809 | emit_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1810 | } |
1811 | break; | |
72b016b4 | 1812 | |
69602580 JB |
1813 | case CFI_label: |
1814 | colon (insn->u.sym_name); | |
1815 | break; | |
1816 | ||
54cfded0 | 1817 | default: |
a4447b93 | 1818 | abort (); |
54cfded0 | 1819 | } |
54cfded0 AM |
1820 | } |
1821 | ||
1822 | static void | |
38462edf | 1823 | output_cie (struct cie_entry *cie, bfd_boolean eh_frame, int align) |
54cfded0 | 1824 | { |
a4447b93 | 1825 | symbolS *after_size_address, *end_address; |
7c0295b1 | 1826 | expressionS exp; |
a4447b93 | 1827 | struct cfi_insn_data *i; |
9b8ae42e | 1828 | offsetT augmentation_size; |
8c9b70b1 | 1829 | int enc; |
38462edf | 1830 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
a4447b93 RH |
1831 | |
1832 | cie->start_address = symbol_temp_new_now (); | |
1833 | after_size_address = symbol_temp_make (); | |
1834 | end_address = symbol_temp_make (); | |
1835 | ||
1836 | exp.X_op = O_subtract; | |
1837 | exp.X_add_symbol = end_address; | |
1838 | exp.X_op_symbol = after_size_address; | |
1839 | exp.X_add_number = 0; | |
1840 | ||
38462edf JJ |
1841 | if (eh_frame || fmt == dwarf2_format_32bit) |
1842 | emit_expr (&exp, 4); /* Length. */ | |
1843 | else | |
1844 | { | |
1845 | if (fmt == dwarf2_format_64bit) | |
1846 | out_four (-1); | |
1847 | emit_expr (&exp, 8); /* Length. */ | |
1848 | } | |
a4447b93 | 1849 | symbol_set_value_now (after_size_address); |
38462edf JJ |
1850 | if (eh_frame) |
1851 | out_four (0); /* CIE id. */ | |
1852 | else | |
1853 | { | |
1854 | out_four (-1); /* CIE id. */ | |
1855 | if (fmt != dwarf2_format_32bit) | |
1856 | out_four (-1); | |
1857 | } | |
289040ca | 1858 | out_one (DW_CIE_VERSION); /* Version. */ |
38462edf JJ |
1859 | if (eh_frame) |
1860 | { | |
1861 | out_one ('z'); /* Augmentation. */ | |
1862 | if (cie->per_encoding != DW_EH_PE_omit) | |
1863 | out_one ('P'); | |
1864 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1865 | out_one ('L'); | |
1866 | out_one ('R'); | |
38462edf | 1867 | } |
d905c788 TS |
1868 | if (cie->signal_frame) |
1869 | out_one ('S'); | |
a4447b93 | 1870 | out_one (0); |
289040ca NC |
1871 | out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */ |
1872 | out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */ | |
0da76f83 NC |
1873 | if (DW_CIE_VERSION == 1) /* Return column. */ |
1874 | out_one (cie->return_column); | |
1875 | else | |
1876 | out_uleb128 (cie->return_column); | |
38462edf JJ |
1877 | if (eh_frame) |
1878 | { | |
1879 | augmentation_size = 1 + (cie->lsda_encoding != DW_EH_PE_omit); | |
1880 | if (cie->per_encoding != DW_EH_PE_omit) | |
1881 | augmentation_size += 1 + encoding_size (cie->per_encoding); | |
1882 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
4e4e1355 | 1883 | |
2f0c68f2 | 1884 | emit_expr_encoded (&cie->personality, cie->per_encoding, TRUE); |
4e4e1355 TS |
1885 | |
1886 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1887 | out_one (cie->lsda_encoding); | |
9b8ae42e | 1888 | } |
8c9b70b1 RH |
1889 | |
1890 | switch (DWARF2_FDE_RELOC_SIZE) | |
1891 | { | |
1892 | case 2: | |
1893 | enc = DW_EH_PE_sdata2; | |
1894 | break; | |
1895 | case 4: | |
1896 | enc = DW_EH_PE_sdata4; | |
1897 | break; | |
1898 | case 8: | |
1899 | enc = DW_EH_PE_sdata8; | |
1900 | break; | |
1901 | default: | |
1902 | abort (); | |
1903 | } | |
3dd24306 | 1904 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
8c9b70b1 | 1905 | enc |= DW_EH_PE_pcrel; |
364b6d8b | 1906 | #endif |
2f0c68f2 CM |
1907 | #ifdef DWARF2_FDE_RELOC_ENCODING |
1908 | /* Allow target to override encoding. */ | |
1909 | enc = DWARF2_FDE_RELOC_ENCODING (enc); | |
1910 | #endif | |
1911 | cie->fde_encoding = enc; | |
38462edf JJ |
1912 | if (eh_frame) |
1913 | out_one (enc); | |
a4447b93 RH |
1914 | |
1915 | if (cie->first) | |
72b016b4 NC |
1916 | { |
1917 | for (i = cie->first; i != cie->last; i = i->next) | |
83e12deb | 1918 | { |
6303c4ae | 1919 | if (CUR_SEG (i) != CUR_SEG (cie)) |
72b016b4 NC |
1920 | continue; |
1921 | output_cfi_insn (i); | |
1922 | } | |
1923 | } | |
a4447b93 | 1924 | |
38462edf | 1925 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
1926 | symbol_set_value_now (end_address); |
1927 | } | |
54cfded0 | 1928 | |
a4447b93 RH |
1929 | static void |
1930 | output_fde (struct fde_entry *fde, struct cie_entry *cie, | |
38462edf JJ |
1931 | bfd_boolean eh_frame, struct cfi_insn_data *first, |
1932 | int align) | |
a4447b93 RH |
1933 | { |
1934 | symbolS *after_size_address, *end_address; | |
1935 | expressionS exp; | |
9b8ae42e | 1936 | offsetT augmentation_size; |
38462edf | 1937 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
ea0de82e AM |
1938 | unsigned int offset_size; |
1939 | unsigned int addr_size; | |
54cfded0 | 1940 | |
a4447b93 RH |
1941 | after_size_address = symbol_temp_make (); |
1942 | end_address = symbol_temp_make (); | |
54cfded0 | 1943 | |
a4447b93 RH |
1944 | exp.X_op = O_subtract; |
1945 | exp.X_add_symbol = end_address; | |
1946 | exp.X_op_symbol = after_size_address; | |
1947 | exp.X_add_number = 0; | |
38462edf JJ |
1948 | if (eh_frame || fmt == dwarf2_format_32bit) |
1949 | offset_size = 4; | |
1950 | else | |
1951 | { | |
1952 | if (fmt == dwarf2_format_64bit) | |
1953 | out_four (-1); | |
1954 | offset_size = 8; | |
1955 | } | |
1956 | emit_expr (&exp, offset_size); /* Length. */ | |
a4447b93 | 1957 | symbol_set_value_now (after_size_address); |
54cfded0 | 1958 | |
38462edf JJ |
1959 | if (eh_frame) |
1960 | { | |
3251495b | 1961 | exp.X_op = O_subtract; |
38462edf JJ |
1962 | exp.X_add_symbol = after_size_address; |
1963 | exp.X_op_symbol = cie->start_address; | |
3251495b RH |
1964 | exp.X_add_number = 0; |
1965 | emit_expr (&exp, offset_size); /* CIE offset. */ | |
38462edf JJ |
1966 | } |
1967 | else | |
1968 | { | |
3251495b | 1969 | TC_DWARF2_EMIT_OFFSET (cie->start_address, offset_size); |
38462edf | 1970 | } |
364b6d8b | 1971 | |
2f0c68f2 | 1972 | exp.X_op = O_symbol; |
38462edf JJ |
1973 | if (eh_frame) |
1974 | { | |
2f0c68f2 CM |
1975 | bfd_reloc_code_real_type code |
1976 | = tc_cfi_reloc_for_encoding (cie->fde_encoding); | |
ea0de82e | 1977 | addr_size = DWARF2_FDE_RELOC_SIZE; |
2f0c68f2 CM |
1978 | if (code != BFD_RELOC_NONE) |
1979 | { | |
1980 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
ea0de82e AM |
1981 | char *p = frag_more (addr_size); |
1982 | gas_assert (addr_size == howto->bitsize / 8); | |
1983 | md_number_to_chars (p, 0, addr_size); | |
1984 | fix_new (frag_now, p - frag_now->fr_literal, addr_size, | |
1985 | fde->start_address, 0, howto->pc_relative, code); | |
2f0c68f2 CM |
1986 | } |
1987 | else | |
1988 | { | |
1989 | exp.X_op = O_subtract; | |
1990 | exp.X_add_number = 0; | |
3dd24306 | 1991 | #if CFI_DIFF_EXPR_OK |
2f0c68f2 CM |
1992 | exp.X_add_symbol = fde->start_address; |
1993 | exp.X_op_symbol = symbol_temp_new_now (); | |
ea0de82e | 1994 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 1995 | #else |
2f0c68f2 CM |
1996 | exp.X_op = O_symbol; |
1997 | exp.X_add_symbol = fde->start_address; | |
1998 | ||
1999 | #if defined(tc_cfi_emit_pcrel_expr) | |
ea0de82e | 2000 | tc_cfi_emit_pcrel_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2001 | #else |
ea0de82e | 2002 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2003 | #endif |
364b6d8b | 2004 | #endif |
2f0c68f2 | 2005 | } |
38462edf JJ |
2006 | } |
2007 | else | |
2008 | { | |
3251495b | 2009 | exp.X_add_number = 0; |
2f0c68f2 | 2010 | exp.X_add_symbol = fde->start_address; |
38462edf JJ |
2011 | addr_size = DWARF2_ADDR_SIZE (stdoutput); |
2012 | emit_expr (&exp, addr_size); | |
2013 | } | |
54cfded0 | 2014 | |
38462edf | 2015 | exp.X_op = O_subtract; |
a4447b93 | 2016 | exp.X_add_symbol = fde->end_address; |
289040ca | 2017 | exp.X_op_symbol = fde->start_address; /* Code length. */ |
3251495b | 2018 | exp.X_add_number = 0; |
38462edf | 2019 | emit_expr (&exp, addr_size); |
54cfded0 | 2020 | |
9b8ae42e | 2021 | augmentation_size = encoding_size (fde->lsda_encoding); |
38462edf JJ |
2022 | if (eh_frame) |
2023 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
9b8ae42e | 2024 | |
2f0c68f2 | 2025 | emit_expr_encoded (&fde->lsda, cie->lsda_encoding, FALSE); |
39b82151 | 2026 | |
a4447b93 | 2027 | for (; first; first = first->next) |
6303c4ae | 2028 | if (CUR_SEG (first) == CUR_SEG (fde)) |
67ed7401 | 2029 | output_cfi_insn (first); |
39b82151 | 2030 | |
4df6ce47 | 2031 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
2032 | symbol_set_value_now (end_address); |
2033 | } | |
2034 | ||
2035 | static struct cie_entry * | |
38462edf JJ |
2036 | select_cie_for_fde (struct fde_entry *fde, bfd_boolean eh_frame, |
2037 | struct cfi_insn_data **pfirst, int align) | |
a4447b93 RH |
2038 | { |
2039 | struct cfi_insn_data *i, *j; | |
2040 | struct cie_entry *cie; | |
2041 | ||
2042 | for (cie = cie_root; cie; cie = cie->next) | |
39b82151 | 2043 | { |
6303c4ae | 2044 | if (CUR_SEG (cie) != CUR_SEG (fde)) |
67ed7401 | 2045 | continue; |
67ed7401 | 2046 | if (cie->return_column != fde->return_column |
9b8ae42e JJ |
2047 | || cie->signal_frame != fde->signal_frame |
2048 | || cie->per_encoding != fde->per_encoding | |
2049 | || cie->lsda_encoding != fde->lsda_encoding) | |
a4447b93 | 2050 | continue; |
9b8ae42e JJ |
2051 | if (cie->per_encoding != DW_EH_PE_omit) |
2052 | { | |
2053 | if (cie->personality.X_op != fde->personality.X_op | |
9e1a8675 AM |
2054 | || (cie->personality.X_add_number |
2055 | != fde->personality.X_add_number)) | |
9b8ae42e JJ |
2056 | continue; |
2057 | switch (cie->personality.X_op) | |
2058 | { | |
2059 | case O_constant: | |
2060 | if (cie->personality.X_unsigned != fde->personality.X_unsigned) | |
2061 | continue; | |
2062 | break; | |
2063 | case O_symbol: | |
2064 | if (cie->personality.X_add_symbol | |
2065 | != fde->personality.X_add_symbol) | |
2066 | continue; | |
2067 | break; | |
2068 | default: | |
2069 | abort (); | |
2070 | } | |
2071 | } | |
a4447b93 RH |
2072 | for (i = cie->first, j = fde->data; |
2073 | i != cie->last && j != NULL; | |
2074 | i = i->next, j = j->next) | |
39b82151 | 2075 | { |
a4447b93 RH |
2076 | if (i->insn != j->insn) |
2077 | goto fail; | |
2078 | switch (i->insn) | |
2079 | { | |
2080 | case DW_CFA_advance_loc: | |
289040ca NC |
2081 | case DW_CFA_remember_state: |
2082 | /* We reached the first advance/remember in the FDE, | |
2083 | but did not reach the end of the CIE list. */ | |
a4447b93 RH |
2084 | goto fail; |
2085 | ||
2086 | case DW_CFA_offset: | |
2087 | case DW_CFA_def_cfa: | |
2088 | if (i->u.ri.reg != j->u.ri.reg) | |
2089 | goto fail; | |
2090 | if (i->u.ri.offset != j->u.ri.offset) | |
2091 | goto fail; | |
2092 | break; | |
2093 | ||
2094 | case DW_CFA_register: | |
2095 | if (i->u.rr.reg1 != j->u.rr.reg1) | |
2096 | goto fail; | |
2097 | if (i->u.rr.reg2 != j->u.rr.reg2) | |
2098 | goto fail; | |
2099 | break; | |
2100 | ||
2101 | case DW_CFA_def_cfa_register: | |
2be24b54 ML |
2102 | case DW_CFA_restore: |
2103 | case DW_CFA_undefined: | |
2104 | case DW_CFA_same_value: | |
a4447b93 RH |
2105 | if (i->u.r != j->u.r) |
2106 | goto fail; | |
2107 | break; | |
2108 | ||
2109 | case DW_CFA_def_cfa_offset: | |
2110 | if (i->u.i != j->u.i) | |
2111 | goto fail; | |
2112 | break; | |
2113 | ||
cdfbf930 | 2114 | case CFI_escape: |
f1c4cc75 | 2115 | case CFI_val_encoded_addr: |
73e76108 | 2116 | case CFI_label: |
cdfbf930 RH |
2117 | /* Don't bother matching these for now. */ |
2118 | goto fail; | |
2119 | ||
a4447b93 RH |
2120 | default: |
2121 | abort (); | |
2122 | } | |
39b82151 | 2123 | } |
a4447b93 RH |
2124 | |
2125 | /* Success if we reached the end of the CIE list, and we've either | |
289040ca NC |
2126 | run out of FDE entries or we've encountered an advance, |
2127 | remember, or escape. */ | |
e9fad691 AM |
2128 | if (i == cie->last |
2129 | && (!j | |
2130 | || j->insn == DW_CFA_advance_loc | |
289040ca | 2131 | || j->insn == DW_CFA_remember_state |
f1c4cc75 | 2132 | || j->insn == CFI_escape |
73e76108 JB |
2133 | || j->insn == CFI_val_encoded_addr |
2134 | || j->insn == CFI_label)) | |
39b82151 | 2135 | { |
a4447b93 RH |
2136 | *pfirst = j; |
2137 | return cie; | |
39b82151 ML |
2138 | } |
2139 | ||
a4447b93 | 2140 | fail:; |
54cfded0 AM |
2141 | } |
2142 | ||
add39d23 | 2143 | cie = XNEW (struct cie_entry); |
a4447b93 RH |
2144 | cie->next = cie_root; |
2145 | cie_root = cie; | |
6303c4ae | 2146 | SET_CUR_SEG (cie, CUR_SEG (fde)); |
a4447b93 | 2147 | cie->return_column = fde->return_column; |
63752a75 | 2148 | cie->signal_frame = fde->signal_frame; |
9b8ae42e JJ |
2149 | cie->per_encoding = fde->per_encoding; |
2150 | cie->lsda_encoding = fde->lsda_encoding; | |
2151 | cie->personality = fde->personality; | |
a4447b93 | 2152 | cie->first = fde->data; |
54cfded0 | 2153 | |
a4447b93 | 2154 | for (i = cie->first; i ; i = i->next) |
e9fad691 | 2155 | if (i->insn == DW_CFA_advance_loc |
289040ca | 2156 | || i->insn == DW_CFA_remember_state |
f1c4cc75 | 2157 | || i->insn == CFI_escape |
69602580 JB |
2158 | || i->insn == CFI_val_encoded_addr |
2159 | || i->insn == CFI_label) | |
a4447b93 | 2160 | break; |
54cfded0 | 2161 | |
a4447b93 RH |
2162 | cie->last = i; |
2163 | *pfirst = i; | |
38462edf JJ |
2164 | |
2165 | output_cie (cie, eh_frame, align); | |
54cfded0 | 2166 | |
a4447b93 | 2167 | return cie; |
54cfded0 AM |
2168 | } |
2169 | ||
38462edf JJ |
2170 | #ifdef md_reg_eh_frame_to_debug_frame |
2171 | static void | |
6303c4ae | 2172 | cfi_change_reg_numbers (struct cfi_insn_data *insn, segT ccseg) |
38462edf JJ |
2173 | { |
2174 | for (; insn; insn = insn->next) | |
72b016b4 | 2175 | { |
6303c4ae | 2176 | if (CUR_SEG (insn) != ccseg) |
83e12deb | 2177 | continue; |
72b016b4 NC |
2178 | switch (insn->insn) |
2179 | { | |
2180 | case DW_CFA_advance_loc: | |
2181 | case DW_CFA_def_cfa_offset: | |
2182 | case DW_CFA_remember_state: | |
2183 | case DW_CFA_restore_state: | |
2184 | case DW_CFA_GNU_window_save: | |
2185 | case CFI_escape: | |
73e76108 | 2186 | case CFI_label: |
72b016b4 | 2187 | break; |
38462edf | 2188 | |
72b016b4 NC |
2189 | case DW_CFA_def_cfa: |
2190 | case DW_CFA_offset: | |
2191 | insn->u.ri.reg = md_reg_eh_frame_to_debug_frame (insn->u.ri.reg); | |
2192 | break; | |
38462edf | 2193 | |
72b016b4 NC |
2194 | case DW_CFA_def_cfa_register: |
2195 | case DW_CFA_undefined: | |
2196 | case DW_CFA_same_value: | |
2197 | case DW_CFA_restore: | |
2198 | insn->u.r = md_reg_eh_frame_to_debug_frame (insn->u.r); | |
2199 | break; | |
38462edf | 2200 | |
72b016b4 NC |
2201 | case DW_CFA_register: |
2202 | insn->u.rr.reg1 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg1); | |
2203 | insn->u.rr.reg2 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg2); | |
2204 | break; | |
38462edf | 2205 | |
72b016b4 NC |
2206 | case CFI_val_encoded_addr: |
2207 | insn->u.ea.reg = md_reg_eh_frame_to_debug_frame (insn->u.ea.reg); | |
2208 | break; | |
38462edf | 2209 | |
72b016b4 NC |
2210 | default: |
2211 | abort (); | |
2212 | } | |
2213 | } | |
38462edf JJ |
2214 | } |
2215 | #else | |
72b016b4 | 2216 | #define cfi_change_reg_numbers(insn, cseg) do { } while (0) |
38462edf JJ |
2217 | #endif |
2218 | ||
2f0c68f2 CM |
2219 | #if SUPPORT_COMPACT_EH |
2220 | static void | |
2221 | cfi_emit_eh_header (symbolS *sym, bfd_vma addend) | |
72b016b4 | 2222 | { |
2f0c68f2 | 2223 | expressionS exp; |
72b016b4 | 2224 | |
2f0c68f2 CM |
2225 | exp.X_add_number = addend; |
2226 | exp.X_add_symbol = sym; | |
2227 | emit_expr_encoded (&exp, DW_EH_PE_sdata4 | DW_EH_PE_pcrel, FALSE); | |
2228 | } | |
72b016b4 | 2229 | |
2f0c68f2 CM |
2230 | static void |
2231 | output_eh_header (struct fde_entry *fde) | |
2232 | { | |
2233 | char *p; | |
2234 | bfd_vma addend; | |
2235 | ||
2236 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2237 | addend = 0; | |
2238 | else | |
2239 | addend = 1; | |
2240 | ||
2241 | cfi_emit_eh_header (fde->start_address, addend); | |
2242 | ||
2243 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2244 | { | |
2245 | p = frag_more (4); | |
2246 | /* Inline entries always use PR1. */ | |
2247 | *(p++) = 1; | |
2248 | memcpy(p, fde->eh_data, 3); | |
6303c4ae AM |
2249 | } |
2250 | else | |
2251 | { | |
2f0c68f2 CM |
2252 | if (fde->eh_header_type == EH_COMPACT_LEGACY) |
2253 | addend = 1; | |
2254 | else if (fde->eh_header_type == EH_COMPACT_OUTLINE | |
2255 | || fde->eh_header_type == EH_COMPACT_OUTLINE_DONE) | |
2256 | addend = 0; | |
2257 | else | |
2258 | abort (); | |
2259 | cfi_emit_eh_header (fde->eh_loc, addend); | |
6303c4ae | 2260 | } |
72b016b4 | 2261 | } |
2f0c68f2 | 2262 | #endif |
72b016b4 | 2263 | |
54cfded0 | 2264 | void |
a4447b93 | 2265 | cfi_finish (void) |
54cfded0 | 2266 | { |
72b016b4 NC |
2267 | struct cie_entry *cie, *cie_next; |
2268 | segT cfi_seg, ccseg; | |
a4447b93 | 2269 | struct fde_entry *fde; |
72b016b4 NC |
2270 | struct cfi_insn_data *first; |
2271 | int save_flag_traditional_format, seek_next_seg; | |
54cfded0 | 2272 | |
a4447b93 RH |
2273 | if (all_fde_data == 0) |
2274 | return; | |
54cfded0 | 2275 | |
bd5608dc | 2276 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
2277 | if ((all_cfi_sections & CFI_EMIT_eh_frame) != 0 |
2278 | || (all_cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
38462edf | 2279 | { |
38462edf JJ |
2280 | /* Make sure check_eh_frame doesn't do anything with our output. */ |
2281 | save_flag_traditional_format = flag_traditional_format; | |
2282 | flag_traditional_format = 1; | |
eafbc43f | 2283 | |
2f0c68f2 | 2284 | if (!EH_FRAME_LINKONCE) |
6303c4ae AM |
2285 | { |
2286 | /* Open .eh_frame section. */ | |
2287 | cfi_seg = get_cfi_seg (NULL, ".eh_frame", | |
2288 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2289 | | DWARF2_EH_FRAME_READ_ONLY), | |
2290 | EH_FRAME_ALIGNMENT); | |
67ed7401 | 2291 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2292 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2293 | #else |
6303c4ae | 2294 | (void) cfi_seg; |
67ed7401 | 2295 | #endif |
6303c4ae | 2296 | } |
67ed7401 | 2297 | |
72b016b4 | 2298 | do |
83e12deb | 2299 | { |
72b016b4 | 2300 | ccseg = NULL; |
72b016b4 | 2301 | seek_next_seg = 0; |
67ed7401 | 2302 | |
72b016b4 | 2303 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2304 | { |
72b016b4 NC |
2305 | cie_next = cie->next; |
2306 | free ((void *) cie); | |
38462edf | 2307 | } |
72b016b4 | 2308 | cie_root = NULL; |
38462edf | 2309 | |
72b016b4 NC |
2310 | for (fde = all_fde_data; fde ; fde = fde->next) |
2311 | { | |
2f0c68f2 CM |
2312 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 |
2313 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2314 | continue; | |
2315 | ||
2316 | #if SUPPORT_COMPACT_EH | |
2317 | /* Emit a LEGACY format header if we have processed all | |
9e1a8675 | 2318 | of the .cfi directives without encountering either inline or |
2f0c68f2 CM |
2319 | out-of-line compact unwinding opcodes. */ |
2320 | if (fde->eh_header_type == EH_COMPACT_HAS_LSDA | |
2321 | || fde->eh_header_type == EH_COMPACT_UNKNOWN) | |
2322 | fde->eh_header_type = EH_COMPACT_LEGACY; | |
2323 | ||
2324 | if (fde->eh_header_type != EH_COMPACT_LEGACY) | |
2325 | continue; | |
2326 | #endif | |
2327 | if (EH_FRAME_LINKONCE) | |
6303c4ae AM |
2328 | { |
2329 | if (HANDLED (fde)) | |
2330 | continue; | |
2331 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2332 | { | |
2333 | seek_next_seg = 2; | |
2334 | continue; | |
2335 | } | |
2336 | if (!seek_next_seg) | |
2337 | { | |
2338 | ccseg = CUR_SEG (fde); | |
2339 | /* Open .eh_frame section. */ | |
2340 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame", | |
2341 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2342 | | DWARF2_EH_FRAME_READ_ONLY), | |
2343 | EH_FRAME_ALIGNMENT); | |
72b016b4 | 2344 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2345 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2346 | #else |
6303c4ae | 2347 | (void) cfi_seg; |
72b016b4 | 2348 | #endif |
6303c4ae AM |
2349 | seek_next_seg = 1; |
2350 | } | |
2351 | SET_HANDLED (fde, 1); | |
72b016b4 | 2352 | } |
72b016b4 NC |
2353 | |
2354 | if (fde->end_address == NULL) | |
2355 | { | |
9e1a8675 AM |
2356 | as_bad (_("open CFI at the end of file; " |
2357 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2358 | fde->end_address = fde->start_address; |
2359 | } | |
2360 | ||
2361 | cie = select_cie_for_fde (fde, TRUE, &first, 2); | |
2f0c68f2 | 2362 | fde->eh_loc = symbol_temp_new_now (); |
72b016b4 NC |
2363 | output_fde (fde, cie, TRUE, first, |
2364 | fde->next == NULL ? EH_FRAME_ALIGNMENT : 2); | |
2365 | } | |
38462edf | 2366 | } |
2f0c68f2 | 2367 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2368 | |
2f0c68f2 | 2369 | if (EH_FRAME_LINKONCE) |
6303c4ae AM |
2370 | for (fde = all_fde_data; fde ; fde = fde->next) |
2371 | SET_HANDLED (fde, 0); | |
38462edf | 2372 | |
2f0c68f2 CM |
2373 | #if SUPPORT_COMPACT_EH |
2374 | if (compact_eh) | |
2375 | { | |
2376 | /* Create remaining out of line table entries. */ | |
2377 | do | |
2378 | { | |
2379 | ccseg = NULL; | |
2380 | seek_next_seg = 0; | |
2381 | ||
2382 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2383 | { | |
2384 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2385 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2386 | continue; | |
2387 | ||
2388 | if (fde->eh_header_type != EH_COMPACT_OUTLINE) | |
2389 | continue; | |
2390 | if (HANDLED (fde)) | |
2391 | continue; | |
2392 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2393 | { | |
2394 | seek_next_seg = 2; | |
2395 | continue; | |
2396 | } | |
2397 | if (!seek_next_seg) | |
2398 | { | |
2399 | ccseg = CUR_SEG (fde); | |
2400 | /* Open .gnu_extab section. */ | |
2401 | get_cfi_seg (ccseg, ".gnu_extab", | |
2402 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2403 | | DWARF2_EH_FRAME_READ_ONLY), | |
2404 | 1); | |
2405 | seek_next_seg = 1; | |
2406 | } | |
2407 | SET_HANDLED (fde, 1); | |
2408 | ||
2409 | frag_align (1, 0, 0); | |
2410 | record_alignment (now_seg, 1); | |
2411 | output_compact_unwind_data (fde, 1); | |
2412 | } | |
2413 | } | |
2414 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); | |
2415 | ||
2416 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2417 | SET_HANDLED (fde, 0); | |
2418 | ||
2419 | /* Create index table fragments. */ | |
2420 | do | |
2421 | { | |
2422 | ccseg = NULL; | |
2423 | seek_next_seg = 0; | |
2424 | ||
2425 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2426 | { | |
2427 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2428 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2429 | continue; | |
2430 | ||
2431 | if (HANDLED (fde)) | |
2432 | continue; | |
2433 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2434 | { | |
2435 | seek_next_seg = 2; | |
2436 | continue; | |
2437 | } | |
2438 | if (!seek_next_seg) | |
2439 | { | |
2440 | ccseg = CUR_SEG (fde); | |
2441 | /* Open .eh_frame_entry section. */ | |
2442 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame_entry", | |
2443 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2444 | | DWARF2_EH_FRAME_READ_ONLY), | |
2445 | 2); | |
2446 | seek_next_seg = 1; | |
2447 | } | |
2448 | SET_HANDLED (fde, 1); | |
2449 | ||
2450 | output_eh_header (fde); | |
2451 | } | |
2452 | } | |
2453 | while (seek_next_seg == 2); | |
2454 | ||
2455 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2456 | SET_HANDLED (fde, 0); | |
2457 | } | |
2458 | #endif /* SUPPORT_COMPACT_EH */ | |
2459 | ||
38462edf JJ |
2460 | flag_traditional_format = save_flag_traditional_format; |
2461 | } | |
2462 | ||
bd5608dc | 2463 | cfi_sections_set = TRUE; |
2f0c68f2 | 2464 | if ((all_cfi_sections & CFI_EMIT_debug_frame) != 0) |
a4447b93 | 2465 | { |
38462edf | 2466 | int alignment = ffs (DWARF2_ADDR_SIZE (stdoutput)) - 1; |
a4447b93 | 2467 | |
6303c4ae AM |
2468 | if (!SUPPORT_FRAME_LINKONCE) |
2469 | get_cfi_seg (NULL, ".debug_frame", | |
2470 | SEC_READONLY | SEC_DEBUGGING, | |
2471 | alignment); | |
2472 | ||
72b016b4 | 2473 | do |
83e12deb | 2474 | { |
72b016b4 | 2475 | ccseg = NULL; |
72b016b4 | 2476 | seek_next_seg = 0; |
67ed7401 | 2477 | |
72b016b4 | 2478 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2479 | { |
72b016b4 NC |
2480 | cie_next = cie->next; |
2481 | free ((void *) cie); | |
38462edf | 2482 | } |
72b016b4 | 2483 | cie_root = NULL; |
38462edf | 2484 | |
72b016b4 NC |
2485 | for (fde = all_fde_data; fde ; fde = fde->next) |
2486 | { | |
2f0c68f2 CM |
2487 | if ((fde->sections & CFI_EMIT_debug_frame) == 0) |
2488 | continue; | |
2489 | ||
6303c4ae AM |
2490 | if (SUPPORT_FRAME_LINKONCE) |
2491 | { | |
2492 | if (HANDLED (fde)) | |
2493 | continue; | |
2494 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2495 | { | |
2496 | seek_next_seg = 2; | |
2497 | continue; | |
2498 | } | |
2499 | if (!seek_next_seg) | |
2500 | { | |
2501 | ccseg = CUR_SEG (fde); | |
2502 | /* Open .debug_frame section. */ | |
2503 | get_cfi_seg (ccseg, ".debug_frame", | |
2504 | SEC_READONLY | SEC_DEBUGGING, | |
2505 | alignment); | |
2506 | seek_next_seg = 1; | |
2507 | } | |
2508 | SET_HANDLED (fde, 1); | |
72b016b4 | 2509 | } |
72b016b4 NC |
2510 | if (fde->end_address == NULL) |
2511 | { | |
9e1a8675 AM |
2512 | as_bad (_("open CFI at the end of file; " |
2513 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2514 | fde->end_address = fde->start_address; |
2515 | } | |
2516 | ||
2517 | fde->per_encoding = DW_EH_PE_omit; | |
2518 | fde->lsda_encoding = DW_EH_PE_omit; | |
2519 | cfi_change_reg_numbers (fde->data, ccseg); | |
2520 | cie = select_cie_for_fde (fde, FALSE, &first, alignment); | |
2521 | output_fde (fde, cie, FALSE, first, alignment); | |
2522 | } | |
38462edf | 2523 | } |
67ed7401 | 2524 | while (SUPPORT_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2525 | |
6303c4ae AM |
2526 | if (SUPPORT_FRAME_LINKONCE) |
2527 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2528 | SET_HANDLED (fde, 0); | |
38462edf | 2529 | } |
54cfded0 | 2530 | } |
0a7b15ff JB |
2531 | |
2532 | #else /* TARGET_USE_CFIPOP */ | |
d58a1929 | 2533 | |
5ff2bd08 | 2534 | /* Emit an intelligible error message for missing support. */ |
d58a1929 RH |
2535 | |
2536 | static void | |
2537 | dot_cfi_dummy (int ignored ATTRIBUTE_UNUSED) | |
2538 | { | |
2539 | as_bad (_("CFI is not supported for this target")); | |
2540 | ignore_rest_of_line (); | |
2541 | } | |
2542 | ||
2543 | const pseudo_typeS cfi_pseudo_table[] = | |
2544 | { | |
2545 | { "cfi_sections", dot_cfi_dummy, 0 }, | |
2546 | { "cfi_startproc", dot_cfi_dummy, 0 }, | |
2547 | { "cfi_endproc", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2548 | { "cfi_fde_data", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2549 | { "cfi_def_cfa", dot_cfi_dummy, 0 }, |
2550 | { "cfi_def_cfa_register", dot_cfi_dummy, 0 }, | |
2551 | { "cfi_def_cfa_offset", dot_cfi_dummy, 0 }, | |
2552 | { "cfi_adjust_cfa_offset", dot_cfi_dummy, 0 }, | |
2553 | { "cfi_offset", dot_cfi_dummy, 0 }, | |
2554 | { "cfi_rel_offset", dot_cfi_dummy, 0 }, | |
2555 | { "cfi_register", dot_cfi_dummy, 0 }, | |
2556 | { "cfi_return_column", dot_cfi_dummy, 0 }, | |
2557 | { "cfi_restore", dot_cfi_dummy, 0 }, | |
2558 | { "cfi_undefined", dot_cfi_dummy, 0 }, | |
2559 | { "cfi_same_value", dot_cfi_dummy, 0 }, | |
2560 | { "cfi_remember_state", dot_cfi_dummy, 0 }, | |
2561 | { "cfi_restore_state", dot_cfi_dummy, 0 }, | |
2562 | { "cfi_window_save", dot_cfi_dummy, 0 }, | |
2563 | { "cfi_escape", dot_cfi_dummy, 0 }, | |
2564 | { "cfi_signal_frame", dot_cfi_dummy, 0 }, | |
2565 | { "cfi_personality", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2566 | { "cfi_personality_id", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2567 | { "cfi_lsda", dot_cfi_dummy, 0 }, |
2568 | { "cfi_val_encoded_addr", dot_cfi_dummy, 0 }, | |
73e76108 | 2569 | { "cfi_label", dot_cfi_dummy, 0 }, |
2f0c68f2 | 2570 | { "cfi_inline_lsda", dot_cfi_dummy, 0 }, |
084303b8 | 2571 | { "cfi_val_offset", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2572 | { NULL, NULL, 0 } |
2573 | }; | |
2574 | ||
0a7b15ff JB |
2575 | void |
2576 | cfi_finish (void) | |
2577 | { | |
2578 | } | |
2579 | #endif /* TARGET_USE_CFIPOP */ |