Commit | Line | Data |
---|---|---|
54cfded0 | 1 | /* dw2gencfi.c - Support for generating Dwarf2 CFI information. |
82704155 | 2 | Copyright (C) 2003-2019 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); | |
86b9fea1 | 200 | gas_assert (size == (unsigned) 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 | { | |
3076e594 NC |
228 | const char * name; |
229 | const char * dollar; | |
230 | const char * dot; | |
72b016b4 NC |
231 | |
232 | if (!seg) | |
3076e594 NC |
233 | return concat (base_name, NULL); |
234 | ||
235 | name = bfd_get_section_name (stdoutput, seg); | |
236 | ||
237 | if (name == NULL || *name == 0) | |
238 | return concat (base_name, NULL); | |
239 | ||
240 | dollar = strchr (name, '$'); | |
241 | dot = strchr (name + 1, '.'); | |
242 | ||
243 | if (!dollar && !dot) | |
72b016b4 | 244 | { |
3076e594 NC |
245 | if (!strcmp (base_name, ".eh_frame_entry") |
246 | && strcmp (name, ".text") != 0) | |
247 | return concat (base_name, ".", name, NULL); | |
248 | ||
249 | name = ""; | |
72b016b4 | 250 | } |
3076e594 NC |
251 | else if (!dollar) |
252 | name = dot; | |
253 | else if (!dot) | |
254 | name = dollar; | |
255 | else if (dot < dollar) | |
256 | name = dot; | |
257 | else | |
258 | name = dollar; | |
72b016b4 NC |
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; | |
09038062 ST |
406 | #ifdef tc_cie_entry_extras |
407 | tc_cie_entry_extras | |
408 | #endif | |
a4447b93 | 409 | struct cfi_insn_data *first, *last; |
39b82151 ML |
410 | }; |
411 | ||
a4447b93 | 412 | /* List of FDE entries. */ |
72b016b4 | 413 | |
af385746 | 414 | struct fde_entry *all_fde_data; |
a4447b93 | 415 | static struct fde_entry **last_fde_data = &all_fde_data; |
39b82151 ML |
416 | |
417 | /* List of CIEs so that they could be reused. */ | |
418 | static struct cie_entry *cie_root; | |
419 | ||
a4447b93 | 420 | /* Construct a new FDE structure and add it to the end of the fde list. */ |
54cfded0 | 421 | |
a4447b93 RH |
422 | static struct fde_entry * |
423 | alloc_fde_entry (void) | |
424 | { | |
add39d23 | 425 | struct fde_entry *fde = XCNEW (struct fde_entry); |
54cfded0 | 426 | |
add39d23 | 427 | frchain_now->frch_cfi_data = XCNEW (struct frch_cfi_data); |
ae424f82 | 428 | frchain_now->frch_cfi_data->cur_fde_data = fde; |
a4447b93 RH |
429 | *last_fde_data = fde; |
430 | last_fde_data = &fde->next; | |
6303c4ae AM |
431 | SET_CUR_SEG (fde, is_now_linkonce_segment ()); |
432 | SET_HANDLED (fde, 0); | |
a4447b93 RH |
433 | fde->last = &fde->data; |
434 | fde->return_column = DWARF2_DEFAULT_RETURN_COLUMN; | |
9b8ae42e JJ |
435 | fde->per_encoding = DW_EH_PE_omit; |
436 | fde->lsda_encoding = DW_EH_PE_omit; | |
2f0c68f2 | 437 | fde->eh_header_type = EH_COMPACT_UNKNOWN; |
09038062 ST |
438 | #ifdef tc_fde_entry_init_extra |
439 | tc_fde_entry_init_extra (fde) | |
440 | #endif | |
a4447b93 RH |
441 | |
442 | return fde; | |
443 | } | |
444 | ||
445 | /* The following functions are available for a backend to construct its | |
446 | own unwind information, usually from legacy unwind directives. */ | |
447 | ||
448 | /* Construct a new INSN structure and add it to the end of the insn list | |
449 | for the currently active FDE. */ | |
450 | ||
2f0c68f2 CM |
451 | static bfd_boolean cfi_sections_set = FALSE; |
452 | static int cfi_sections = CFI_EMIT_eh_frame; | |
453 | int all_cfi_sections = 0; | |
454 | static struct fde_entry *last_fde; | |
455 | ||
a4447b93 RH |
456 | static struct cfi_insn_data * |
457 | alloc_cfi_insn_data (void) | |
54cfded0 | 458 | { |
add39d23 | 459 | struct cfi_insn_data *insn = XCNEW (struct cfi_insn_data); |
ae424f82 | 460 | struct fde_entry *cur_fde_data = frchain_now->frch_cfi_data->cur_fde_data; |
a4447b93 RH |
461 | |
462 | *cur_fde_data->last = insn; | |
463 | cur_fde_data->last = &insn->next; | |
6303c4ae | 464 | SET_CUR_SEG (insn, is_now_linkonce_segment ()); |
a4447b93 | 465 | return insn; |
54cfded0 AM |
466 | } |
467 | ||
a4447b93 RH |
468 | /* Construct a new FDE structure that begins at LABEL. */ |
469 | ||
72b016b4 | 470 | void |
a4447b93 | 471 | cfi_new_fde (symbolS *label) |
54cfded0 | 472 | { |
a4447b93 RH |
473 | struct fde_entry *fde = alloc_fde_entry (); |
474 | fde->start_address = label; | |
ae424f82 | 475 | frchain_now->frch_cfi_data->last_address = label; |
54cfded0 AM |
476 | } |
477 | ||
a4447b93 RH |
478 | /* End the currently open FDE. */ |
479 | ||
72b016b4 | 480 | void |
a4447b93 | 481 | cfi_end_fde (symbolS *label) |
54cfded0 | 482 | { |
ae424f82 JJ |
483 | frchain_now->frch_cfi_data->cur_fde_data->end_address = label; |
484 | free (frchain_now->frch_cfi_data); | |
485 | frchain_now->frch_cfi_data = NULL; | |
54cfded0 AM |
486 | } |
487 | ||
a4447b93 RH |
488 | /* Set the return column for the current FDE. */ |
489 | ||
490 | void | |
491 | cfi_set_return_column (unsigned regno) | |
54cfded0 | 492 | { |
ae424f82 | 493 | frchain_now->frch_cfi_data->cur_fde_data->return_column = regno; |
a4447b93 | 494 | } |
54cfded0 | 495 | |
2f0c68f2 CM |
496 | void |
497 | cfi_set_sections (void) | |
498 | { | |
499 | frchain_now->frch_cfi_data->cur_fde_data->sections = all_cfi_sections; | |
bd5608dc | 500 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
501 | } |
502 | ||
2be24b54 ML |
503 | /* Universal functions to store new instructions. */ |
504 | ||
505 | static void | |
72b016b4 | 506 | cfi_add_CFA_insn (int insn) |
2be24b54 ML |
507 | { |
508 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
509 | ||
510 | insn_ptr->insn = insn; | |
511 | } | |
512 | ||
513 | static void | |
514 | cfi_add_CFA_insn_reg (int insn, unsigned regno) | |
515 | { | |
516 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
517 | ||
518 | insn_ptr->insn = insn; | |
519 | insn_ptr->u.r = regno; | |
520 | } | |
521 | ||
522 | static void | |
523 | cfi_add_CFA_insn_offset (int insn, offsetT offset) | |
524 | { | |
525 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
526 | ||
527 | insn_ptr->insn = insn; | |
528 | insn_ptr->u.i = offset; | |
529 | } | |
530 | ||
531 | static void | |
532 | cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2) | |
533 | { | |
534 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
535 | ||
536 | insn_ptr->insn = insn; | |
537 | insn_ptr->u.rr.reg1 = reg1; | |
538 | insn_ptr->u.rr.reg2 = reg2; | |
539 | } | |
540 | ||
541 | static void | |
542 | cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset) | |
543 | { | |
544 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
545 | ||
546 | insn_ptr->insn = insn; | |
547 | insn_ptr->u.ri.reg = regno; | |
548 | insn_ptr->u.ri.offset = offset; | |
549 | } | |
550 | ||
a4447b93 | 551 | /* Add a CFI insn to advance the PC from the last address to LABEL. */ |
54cfded0 | 552 | |
a4447b93 RH |
553 | void |
554 | cfi_add_advance_loc (symbolS *label) | |
555 | { | |
556 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
7c0295b1 | 557 | |
a4447b93 | 558 | insn->insn = DW_CFA_advance_loc; |
ae424f82 | 559 | insn->u.ll.lab1 = frchain_now->frch_cfi_data->last_address; |
a4447b93 | 560 | insn->u.ll.lab2 = label; |
54cfded0 | 561 | |
ae424f82 | 562 | frchain_now->frch_cfi_data->last_address = label; |
a4447b93 | 563 | } |
54cfded0 | 564 | |
69602580 JB |
565 | /* Add a CFI insn to label the current position in the CFI segment. */ |
566 | ||
567 | void | |
568 | cfi_add_label (const char *name) | |
569 | { | |
570 | unsigned int len = strlen (name) + 1; | |
571 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
572 | ||
573 | insn->insn = CFI_label; | |
574 | obstack_grow (¬es, name, len); | |
575 | insn->u.sym_name = (char *) obstack_finish (¬es); | |
576 | } | |
577 | ||
a4447b93 RH |
578 | /* Add a DW_CFA_offset record to the CFI data. */ |
579 | ||
580 | void | |
581 | cfi_add_CFA_offset (unsigned regno, offsetT offset) | |
582 | { | |
fa87b337 RH |
583 | unsigned int abs_data_align; |
584 | ||
9c2799c2 | 585 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); |
2be24b54 | 586 | cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset); |
fa87b337 RH |
587 | |
588 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
589 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
590 | if (offset % abs_data_align) | |
591 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
a4447b93 | 592 | } |
54cfded0 | 593 | |
084303b8 AK |
594 | /* Add a DW_CFA_val_offset record to the CFI data. */ |
595 | ||
596 | void | |
597 | cfi_add_CFA_val_offset (unsigned regno, offsetT offset) | |
598 | { | |
599 | unsigned int abs_data_align; | |
600 | ||
601 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); | |
602 | cfi_add_CFA_insn_reg_offset (DW_CFA_val_offset, regno, offset); | |
603 | ||
604 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
605 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
606 | if (offset % abs_data_align) | |
607 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
608 | } | |
609 | ||
a4447b93 | 610 | /* Add a DW_CFA_def_cfa record to the CFI data. */ |
54cfded0 | 611 | |
a4447b93 RH |
612 | void |
613 | cfi_add_CFA_def_cfa (unsigned regno, offsetT offset) | |
614 | { | |
2be24b54 | 615 | cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset); |
ae424f82 | 616 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
54cfded0 AM |
617 | } |
618 | ||
a4447b93 RH |
619 | /* Add a DW_CFA_register record to the CFI data. */ |
620 | ||
621 | void | |
622 | cfi_add_CFA_register (unsigned reg1, unsigned reg2) | |
54cfded0 | 623 | { |
2be24b54 | 624 | cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2); |
54cfded0 AM |
625 | } |
626 | ||
a4447b93 RH |
627 | /* Add a DW_CFA_def_cfa_register record to the CFI data. */ |
628 | ||
629 | void | |
630 | cfi_add_CFA_def_cfa_register (unsigned regno) | |
54cfded0 | 631 | { |
2be24b54 | 632 | cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno); |
54cfded0 AM |
633 | } |
634 | ||
a4447b93 RH |
635 | /* Add a DW_CFA_def_cfa_offset record to the CFI data. */ |
636 | ||
54cfded0 | 637 | void |
a4447b93 | 638 | cfi_add_CFA_def_cfa_offset (offsetT offset) |
54cfded0 | 639 | { |
2be24b54 | 640 | cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset); |
ae424f82 | 641 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
a4447b93 | 642 | } |
54cfded0 | 643 | |
2be24b54 ML |
644 | void |
645 | cfi_add_CFA_restore (unsigned regno) | |
646 | { | |
647 | cfi_add_CFA_insn_reg (DW_CFA_restore, regno); | |
648 | } | |
649 | ||
650 | void | |
651 | cfi_add_CFA_undefined (unsigned regno) | |
652 | { | |
653 | cfi_add_CFA_insn_reg (DW_CFA_undefined, regno); | |
654 | } | |
655 | ||
656 | void | |
657 | cfi_add_CFA_same_value (unsigned regno) | |
658 | { | |
659 | cfi_add_CFA_insn_reg (DW_CFA_same_value, regno); | |
660 | } | |
661 | ||
662 | void | |
663 | cfi_add_CFA_remember_state (void) | |
664 | { | |
fa87b337 RH |
665 | struct cfa_save_data *p; |
666 | ||
2be24b54 | 667 | cfi_add_CFA_insn (DW_CFA_remember_state); |
fa87b337 | 668 | |
add39d23 | 669 | p = XNEW (struct cfa_save_data); |
ae424f82 JJ |
670 | p->cfa_offset = frchain_now->frch_cfi_data->cur_cfa_offset; |
671 | p->next = frchain_now->frch_cfi_data->cfa_save_stack; | |
672 | frchain_now->frch_cfi_data->cfa_save_stack = p; | |
2be24b54 ML |
673 | } |
674 | ||
675 | void | |
676 | cfi_add_CFA_restore_state (void) | |
677 | { | |
fa87b337 RH |
678 | struct cfa_save_data *p; |
679 | ||
2be24b54 | 680 | cfi_add_CFA_insn (DW_CFA_restore_state); |
fa87b337 | 681 | |
ae424f82 | 682 | p = frchain_now->frch_cfi_data->cfa_save_stack; |
fa87b337 RH |
683 | if (p) |
684 | { | |
ae424f82 JJ |
685 | frchain_now->frch_cfi_data->cur_cfa_offset = p->cfa_offset; |
686 | frchain_now->frch_cfi_data->cfa_save_stack = p->next; | |
fa87b337 RH |
687 | free (p); |
688 | } | |
289040ca NC |
689 | else |
690 | as_bad (_("CFI state restore without previous remember")); | |
2be24b54 ML |
691 | } |
692 | ||
a4447b93 RH |
693 | \f |
694 | /* Parse CFI assembler directives. */ | |
54cfded0 | 695 | |
a4447b93 | 696 | static void dot_cfi (int); |
cdfbf930 | 697 | static void dot_cfi_escape (int); |
38462edf | 698 | static void dot_cfi_sections (int); |
a4447b93 RH |
699 | static void dot_cfi_startproc (int); |
700 | static void dot_cfi_endproc (int); | |
2f0c68f2 | 701 | static void dot_cfi_fde_data (int); |
9b8ae42e | 702 | static void dot_cfi_personality (int); |
2f0c68f2 | 703 | static void dot_cfi_personality_id (int); |
9b8ae42e | 704 | static void dot_cfi_lsda (int); |
f1c4cc75 | 705 | static void dot_cfi_val_encoded_addr (int); |
2f0c68f2 | 706 | static void dot_cfi_inline_lsda (int); |
69602580 | 707 | static void dot_cfi_label (int); |
54cfded0 | 708 | |
a4447b93 RH |
709 | const pseudo_typeS cfi_pseudo_table[] = |
710 | { | |
38462edf | 711 | { "cfi_sections", dot_cfi_sections, 0 }, |
a4447b93 RH |
712 | { "cfi_startproc", dot_cfi_startproc, 0 }, |
713 | { "cfi_endproc", dot_cfi_endproc, 0 }, | |
2f0c68f2 | 714 | { "cfi_fde_data", dot_cfi_fde_data, 0 }, |
a4447b93 RH |
715 | { "cfi_def_cfa", dot_cfi, DW_CFA_def_cfa }, |
716 | { "cfi_def_cfa_register", dot_cfi, DW_CFA_def_cfa_register }, | |
717 | { "cfi_def_cfa_offset", dot_cfi, DW_CFA_def_cfa_offset }, | |
718 | { "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset }, | |
719 | { "cfi_offset", dot_cfi, DW_CFA_offset }, | |
fa87b337 | 720 | { "cfi_rel_offset", dot_cfi, CFI_rel_offset }, |
a4447b93 | 721 | { "cfi_register", dot_cfi, DW_CFA_register }, |
2be24b54 ML |
722 | { "cfi_return_column", dot_cfi, CFI_return_column }, |
723 | { "cfi_restore", dot_cfi, DW_CFA_restore }, | |
724 | { "cfi_undefined", dot_cfi, DW_CFA_undefined }, | |
725 | { "cfi_same_value", dot_cfi, DW_CFA_same_value }, | |
726 | { "cfi_remember_state", dot_cfi, DW_CFA_remember_state }, | |
727 | { "cfi_restore_state", dot_cfi, DW_CFA_restore_state }, | |
6749011b | 728 | { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save }, |
cdfbf930 | 729 | { "cfi_escape", dot_cfi_escape, 0 }, |
63752a75 | 730 | { "cfi_signal_frame", dot_cfi, CFI_signal_frame }, |
9b8ae42e | 731 | { "cfi_personality", dot_cfi_personality, 0 }, |
2f0c68f2 | 732 | { "cfi_personality_id", dot_cfi_personality_id, 0 }, |
9b8ae42e | 733 | { "cfi_lsda", dot_cfi_lsda, 0 }, |
f1c4cc75 | 734 | { "cfi_val_encoded_addr", dot_cfi_val_encoded_addr, 0 }, |
2f0c68f2 | 735 | { "cfi_inline_lsda", dot_cfi_inline_lsda, 0 }, |
69602580 | 736 | { "cfi_label", dot_cfi_label, 0 }, |
084303b8 | 737 | { "cfi_val_offset", dot_cfi, DW_CFA_val_offset }, |
a4447b93 RH |
738 | { NULL, NULL, 0 } |
739 | }; | |
54cfded0 AM |
740 | |
741 | static void | |
a4447b93 | 742 | cfi_parse_separator (void) |
54cfded0 | 743 | { |
a4447b93 RH |
744 | SKIP_WHITESPACE (); |
745 | if (*input_line_pointer == ',') | |
746 | input_line_pointer++; | |
747 | else | |
748 | as_bad (_("missing separator")); | |
54cfded0 AM |
749 | } |
750 | ||
a60de03c JB |
751 | #ifndef tc_parse_to_dw2regnum |
752 | static void | |
72b016b4 | 753 | tc_parse_to_dw2regnum (expressionS *exp) |
54cfded0 | 754 | { |
a60de03c | 755 | # ifdef tc_regname_to_dw2regnum |
a4447b93 RH |
756 | SKIP_WHITESPACE (); |
757 | if (is_name_beginner (*input_line_pointer) | |
758 | || (*input_line_pointer == '%' | |
759 | && is_name_beginner (*++input_line_pointer))) | |
760 | { | |
761 | char *name, c; | |
762 | ||
d02603dc | 763 | c = get_symbol_name (& name); |
a4447b93 | 764 | |
a60de03c JB |
765 | exp->X_op = O_constant; |
766 | exp->X_add_number = tc_regname_to_dw2regnum (name); | |
54cfded0 | 767 | |
d02603dc | 768 | restore_line_pointer (c); |
a4447b93 | 769 | } |
a60de03c JB |
770 | else |
771 | # endif | |
772 | expression_and_evaluate (exp); | |
773 | } | |
a4447b93 RH |
774 | #endif |
775 | ||
a60de03c JB |
776 | static unsigned |
777 | cfi_parse_reg (void) | |
778 | { | |
779 | int regno; | |
780 | expressionS exp; | |
781 | ||
782 | tc_parse_to_dw2regnum (&exp); | |
a4447b93 | 783 | switch (exp.X_op) |
54cfded0 | 784 | { |
a4447b93 RH |
785 | case O_register: |
786 | case O_constant: | |
787 | regno = exp.X_add_number; | |
788 | break; | |
789 | ||
790 | default: | |
a60de03c JB |
791 | regno = -1; |
792 | break; | |
793 | } | |
794 | ||
795 | if (regno < 0) | |
796 | { | |
a4447b93 RH |
797 | as_bad (_("bad register expression")); |
798 | regno = 0; | |
54cfded0 AM |
799 | } |
800 | ||
a4447b93 RH |
801 | return regno; |
802 | } | |
803 | ||
804 | static offsetT | |
805 | cfi_parse_const (void) | |
806 | { | |
807 | return get_absolute_expression (); | |
54cfded0 AM |
808 | } |
809 | ||
810 | static void | |
a4447b93 | 811 | dot_cfi (int arg) |
54cfded0 | 812 | { |
a4447b93 RH |
813 | offsetT offset; |
814 | unsigned reg1, reg2; | |
54cfded0 | 815 | |
ae424f82 | 816 | if (frchain_now->frch_cfi_data == NULL) |
54cfded0 AM |
817 | { |
818 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 819 | ignore_rest_of_line (); |
54cfded0 AM |
820 | return; |
821 | } | |
822 | ||
a4447b93 | 823 | /* If the last address was not at the current PC, advance to current. */ |
ae424f82 | 824 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
825 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
826 | != frag_now_fix ())) | |
a4447b93 | 827 | cfi_add_advance_loc (symbol_temp_new_now ()); |
54cfded0 AM |
828 | |
829 | switch (arg) | |
830 | { | |
a4447b93 | 831 | case DW_CFA_offset: |
a4447b93 RH |
832 | reg1 = cfi_parse_reg (); |
833 | cfi_parse_separator (); | |
834 | offset = cfi_parse_const (); | |
2be24b54 ML |
835 | cfi_add_CFA_offset (reg1, offset); |
836 | break; | |
a4447b93 | 837 | |
084303b8 AK |
838 | case DW_CFA_val_offset: |
839 | reg1 = cfi_parse_reg (); | |
840 | cfi_parse_separator (); | |
841 | offset = cfi_parse_const (); | |
842 | cfi_add_CFA_val_offset (reg1, offset); | |
843 | break; | |
844 | ||
fa87b337 RH |
845 | case CFI_rel_offset: |
846 | reg1 = cfi_parse_reg (); | |
847 | cfi_parse_separator (); | |
848 | offset = cfi_parse_const (); | |
ae424f82 JJ |
849 | cfi_add_CFA_offset (reg1, |
850 | offset - frchain_now->frch_cfi_data->cur_cfa_offset); | |
fa87b337 RH |
851 | break; |
852 | ||
2be24b54 ML |
853 | case DW_CFA_def_cfa: |
854 | reg1 = cfi_parse_reg (); | |
855 | cfi_parse_separator (); | |
856 | offset = cfi_parse_const (); | |
857 | cfi_add_CFA_def_cfa (reg1, offset); | |
54cfded0 AM |
858 | break; |
859 | ||
a4447b93 RH |
860 | case DW_CFA_register: |
861 | reg1 = cfi_parse_reg (); | |
862 | cfi_parse_separator (); | |
863 | reg2 = cfi_parse_reg (); | |
a4447b93 | 864 | cfi_add_CFA_register (reg1, reg2); |
39b82151 ML |
865 | break; |
866 | ||
a4447b93 RH |
867 | case DW_CFA_def_cfa_register: |
868 | reg1 = cfi_parse_reg (); | |
869 | cfi_add_CFA_def_cfa_register (reg1); | |
54cfded0 AM |
870 | break; |
871 | ||
a4447b93 RH |
872 | case DW_CFA_def_cfa_offset: |
873 | offset = cfi_parse_const (); | |
874 | cfi_add_CFA_def_cfa_offset (offset); | |
54cfded0 AM |
875 | break; |
876 | ||
54cfded0 | 877 | case CFI_adjust_cfa_offset: |
a4447b93 | 878 | offset = cfi_parse_const (); |
ae424f82 JJ |
879 | cfi_add_CFA_def_cfa_offset (frchain_now->frch_cfi_data->cur_cfa_offset |
880 | + offset); | |
54cfded0 AM |
881 | break; |
882 | ||
2be24b54 | 883 | case DW_CFA_restore: |
b57d375b JB |
884 | for (;;) |
885 | { | |
886 | reg1 = cfi_parse_reg (); | |
887 | cfi_add_CFA_restore (reg1); | |
888 | SKIP_WHITESPACE (); | |
889 | if (*input_line_pointer != ',') | |
890 | break; | |
891 | ++input_line_pointer; | |
892 | } | |
2be24b54 ML |
893 | break; |
894 | ||
895 | case DW_CFA_undefined: | |
b57d375b JB |
896 | for (;;) |
897 | { | |
898 | reg1 = cfi_parse_reg (); | |
899 | cfi_add_CFA_undefined (reg1); | |
900 | SKIP_WHITESPACE (); | |
901 | if (*input_line_pointer != ',') | |
902 | break; | |
903 | ++input_line_pointer; | |
904 | } | |
2be24b54 ML |
905 | break; |
906 | ||
907 | case DW_CFA_same_value: | |
908 | reg1 = cfi_parse_reg (); | |
909 | cfi_add_CFA_same_value (reg1); | |
910 | break; | |
911 | ||
912 | case CFI_return_column: | |
913 | reg1 = cfi_parse_reg (); | |
914 | cfi_set_return_column (reg1); | |
915 | break; | |
916 | ||
917 | case DW_CFA_remember_state: | |
918 | cfi_add_CFA_remember_state (); | |
919 | break; | |
920 | ||
921 | case DW_CFA_restore_state: | |
922 | cfi_add_CFA_restore_state (); | |
923 | break; | |
924 | ||
364b6d8b JJ |
925 | case DW_CFA_GNU_window_save: |
926 | cfi_add_CFA_insn (DW_CFA_GNU_window_save); | |
927 | break; | |
928 | ||
63752a75 | 929 | case CFI_signal_frame: |
ae424f82 | 930 | frchain_now->frch_cfi_data->cur_fde_data->signal_frame = 1; |
63752a75 JJ |
931 | break; |
932 | ||
54cfded0 | 933 | default: |
a4447b93 | 934 | abort (); |
54cfded0 | 935 | } |
54cfded0 | 936 | |
a4447b93 | 937 | demand_empty_rest_of_line (); |
54cfded0 AM |
938 | } |
939 | ||
cdfbf930 RH |
940 | static void |
941 | dot_cfi_escape (int ignored ATTRIBUTE_UNUSED) | |
942 | { | |
943 | struct cfi_escape_data *head, **tail, *e; | |
944 | struct cfi_insn_data *insn; | |
945 | ||
ae424f82 | 946 | if (frchain_now->frch_cfi_data == NULL) |
cdfbf930 RH |
947 | { |
948 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 949 | ignore_rest_of_line (); |
cdfbf930 RH |
950 | return; |
951 | } | |
952 | ||
953 | /* If the last address was not at the current PC, advance to current. */ | |
ae424f82 | 954 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
955 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
956 | != frag_now_fix ())) | |
cdfbf930 RH |
957 | cfi_add_advance_loc (symbol_temp_new_now ()); |
958 | ||
959 | tail = &head; | |
960 | do | |
961 | { | |
add39d23 | 962 | e = XNEW (struct cfi_escape_data); |
cdfbf930 RH |
963 | do_parse_cons_expression (&e->exp, 1); |
964 | *tail = e; | |
965 | tail = &e->next; | |
966 | } | |
967 | while (*input_line_pointer++ == ','); | |
968 | *tail = NULL; | |
969 | ||
970 | insn = alloc_cfi_insn_data (); | |
971 | insn->insn = CFI_escape; | |
972 | insn->u.esc = head; | |
7c9c8381 JB |
973 | |
974 | --input_line_pointer; | |
975 | demand_empty_rest_of_line (); | |
cdfbf930 RH |
976 | } |
977 | ||
9b8ae42e JJ |
978 | static void |
979 | dot_cfi_personality (int ignored ATTRIBUTE_UNUSED) | |
980 | { | |
981 | struct fde_entry *fde; | |
982 | offsetT encoding; | |
983 | ||
984 | if (frchain_now->frch_cfi_data == NULL) | |
985 | { | |
986 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
987 | ignore_rest_of_line (); | |
988 | return; | |
989 | } | |
990 | ||
991 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 992 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
993 | if (encoding == DW_EH_PE_omit) |
994 | { | |
995 | demand_empty_rest_of_line (); | |
996 | fde->per_encoding = encoding; | |
997 | return; | |
998 | } | |
999 | ||
1000 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1001 | || ((((encoding & 0x70) != 0 |
3dd24306 | 1002 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
9e1a8675 | 1003 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1004 | #endif |
9e1a8675 AM |
1005 | ) |
1006 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1007 | || (encoding & 7) == DW_EH_PE_uleb128 |
1008 | || (encoding & 7) > DW_EH_PE_udata8) | |
9e1a8675 | 1009 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) |
9b8ae42e JJ |
1010 | { |
1011 | as_bad (_("invalid or unsupported encoding in .cfi_personality")); | |
1012 | ignore_rest_of_line (); | |
1013 | return; | |
1014 | } | |
1015 | ||
1016 | if (*input_line_pointer++ != ',') | |
1017 | { | |
1018 | as_bad (_(".cfi_personality requires encoding and symbol arguments")); | |
1019 | ignore_rest_of_line (); | |
1020 | return; | |
1021 | } | |
1022 | ||
1023 | expression_and_evaluate (&fde->personality); | |
1024 | switch (fde->personality.X_op) | |
1025 | { | |
1026 | case O_symbol: | |
1027 | break; | |
1028 | case O_constant: | |
1029 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1030 | encoding = DW_EH_PE_omit; | |
1031 | break; | |
1032 | default: | |
1033 | encoding = DW_EH_PE_omit; | |
1034 | break; | |
1035 | } | |
1036 | ||
1037 | fde->per_encoding = encoding; | |
1038 | ||
1039 | if (encoding == DW_EH_PE_omit) | |
1040 | { | |
1041 | as_bad (_("wrong second argument to .cfi_personality")); | |
1042 | ignore_rest_of_line (); | |
1043 | return; | |
1044 | } | |
1045 | ||
1046 | demand_empty_rest_of_line (); | |
1047 | } | |
1048 | ||
1049 | static void | |
1050 | dot_cfi_lsda (int ignored ATTRIBUTE_UNUSED) | |
1051 | { | |
1052 | struct fde_entry *fde; | |
1053 | offsetT encoding; | |
1054 | ||
1055 | if (frchain_now->frch_cfi_data == NULL) | |
1056 | { | |
1057 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1058 | ignore_rest_of_line (); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1063 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1064 | if (encoding == DW_EH_PE_omit) |
1065 | { | |
1066 | demand_empty_rest_of_line (); | |
1067 | fde->lsda_encoding = encoding; | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1072 | || ((((encoding & 0x70) != 0 |
2c678708 | 1073 | #if CFI_DIFF_LSDA_OK || defined tc_cfi_emit_pcrel_expr |
2f0c68f2 | 1074 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1075 | #endif |
9e1a8675 AM |
1076 | ) |
1077 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1078 | || (encoding & 7) == DW_EH_PE_uleb128 |
1079 | || (encoding & 7) > DW_EH_PE_udata8) | |
1080 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) | |
9b8ae42e JJ |
1081 | { |
1082 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1083 | ignore_rest_of_line (); | |
1084 | return; | |
1085 | } | |
1086 | ||
1087 | if (*input_line_pointer++ != ',') | |
1088 | { | |
1089 | as_bad (_(".cfi_lsda requires encoding and symbol arguments")); | |
1090 | ignore_rest_of_line (); | |
1091 | return; | |
1092 | } | |
1093 | ||
1094 | fde->lsda_encoding = encoding; | |
1095 | ||
1096 | expression_and_evaluate (&fde->lsda); | |
1097 | switch (fde->lsda.X_op) | |
1098 | { | |
1099 | case O_symbol: | |
1100 | break; | |
1101 | case O_constant: | |
1102 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1103 | encoding = DW_EH_PE_omit; | |
1104 | break; | |
1105 | default: | |
1106 | encoding = DW_EH_PE_omit; | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | fde->lsda_encoding = encoding; | |
1111 | ||
1112 | if (encoding == DW_EH_PE_omit) | |
1113 | { | |
1114 | as_bad (_("wrong second argument to .cfi_lsda")); | |
1115 | ignore_rest_of_line (); | |
1116 | return; | |
1117 | } | |
1118 | ||
1119 | demand_empty_rest_of_line (); | |
1120 | } | |
1121 | ||
f1c4cc75 RH |
1122 | static void |
1123 | dot_cfi_val_encoded_addr (int ignored ATTRIBUTE_UNUSED) | |
1124 | { | |
1125 | struct cfi_insn_data *insn_ptr; | |
1126 | offsetT encoding; | |
1127 | ||
1128 | if (frchain_now->frch_cfi_data == NULL) | |
1129 | { | |
1130 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1131 | ignore_rest_of_line (); | |
1132 | return; | |
1133 | } | |
1134 | ||
1135 | /* If the last address was not at the current PC, advance to current. */ | |
1136 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
9e1a8675 AM |
1137 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1138 | != frag_now_fix ())) | |
f1c4cc75 RH |
1139 | cfi_add_advance_loc (symbol_temp_new_now ()); |
1140 | ||
1141 | insn_ptr = alloc_cfi_insn_data (); | |
1142 | insn_ptr->insn = CFI_val_encoded_addr; | |
72b016b4 | 1143 | |
f1c4cc75 RH |
1144 | insn_ptr->u.ea.reg = cfi_parse_reg (); |
1145 | ||
1146 | cfi_parse_separator (); | |
1147 | encoding = cfi_parse_const (); | |
1148 | if ((encoding & 0xff) != encoding | |
1149 | || ((encoding & 0x70) != 0 | |
1150 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr | |
1151 | && (encoding & 0x70) != DW_EH_PE_pcrel | |
1152 | #endif | |
1153 | ) | |
9e1a8675 | 1154 | /* leb128 can be handled, but does something actually need it? */ |
f1c4cc75 RH |
1155 | || (encoding & 7) == DW_EH_PE_uleb128 |
1156 | || (encoding & 7) > DW_EH_PE_udata8) | |
1157 | { | |
1158 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1159 | encoding = DW_EH_PE_omit; | |
1160 | } | |
1161 | ||
1162 | cfi_parse_separator (); | |
1163 | expression_and_evaluate (&insn_ptr->u.ea.exp); | |
1164 | switch (insn_ptr->u.ea.exp.X_op) | |
1165 | { | |
1166 | case O_symbol: | |
1167 | break; | |
1168 | case O_constant: | |
1169 | if ((encoding & 0x70) != DW_EH_PE_pcrel) | |
83e12deb | 1170 | break; |
1a0670f3 | 1171 | /* Fall through. */ |
f1c4cc75 RH |
1172 | default: |
1173 | encoding = DW_EH_PE_omit; | |
1174 | break; | |
1175 | } | |
1176 | ||
1177 | insn_ptr->u.ea.encoding = encoding; | |
1178 | if (encoding == DW_EH_PE_omit) | |
1179 | { | |
1180 | as_bad (_("wrong third argument to .cfi_val_encoded_addr")); | |
1181 | ignore_rest_of_line (); | |
1182 | return; | |
1183 | } | |
1184 | ||
1185 | demand_empty_rest_of_line (); | |
1186 | } | |
1187 | ||
69602580 JB |
1188 | static void |
1189 | dot_cfi_label (int ignored ATTRIBUTE_UNUSED) | |
1190 | { | |
314a80c4 | 1191 | char *name; |
1192 | ||
1193 | if (frchain_now->frch_cfi_data == NULL) | |
1194 | { | |
1195 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1196 | ignore_rest_of_line (); | |
1197 | return; | |
1198 | } | |
69602580 | 1199 | |
314a80c4 | 1200 | name = read_symbol_name (); |
69602580 JB |
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 | |
9e1a8675 AM |
1206 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1207 | != frag_now_fix ())) | |
69602580 JB |
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 | 1236 | #if SUPPORT_COMPACT_EH |
9e1a8675 AM |
1237 | else if (strncmp (name, ".eh_frame_entry", |
1238 | sizeof ".eh_frame_entry") == 0) | |
2f0c68f2 CM |
1239 | { |
1240 | compact_eh = TRUE; | |
1241 | sections |= CFI_EMIT_eh_frame_compact; | |
1242 | } | |
1243 | #endif | |
1bce6bd8 PB |
1244 | #ifdef tc_cfi_section_name |
1245 | else if (strcmp (name, tc_cfi_section_name) == 0) | |
1246 | sections |= CFI_EMIT_target; | |
1247 | #endif | |
38462edf JJ |
1248 | else |
1249 | { | |
1250 | *input_line_pointer = c; | |
d02603dc | 1251 | input_line_pointer = saved_ilp; |
38462edf JJ |
1252 | break; |
1253 | } | |
1254 | ||
1255 | *input_line_pointer = c; | |
d02603dc | 1256 | SKIP_WHITESPACE_AFTER_NAME (); |
38462edf JJ |
1257 | if (*input_line_pointer == ',') |
1258 | { | |
1259 | name = input_line_pointer++; | |
1260 | SKIP_WHITESPACE (); | |
9e1a8675 AM |
1261 | if (!is_name_beginner (*input_line_pointer) |
1262 | && *input_line_pointer != '"') | |
38462edf JJ |
1263 | { |
1264 | input_line_pointer = name; | |
1265 | break; | |
1266 | } | |
1267 | } | |
9e1a8675 AM |
1268 | else if (is_name_beginner (*input_line_pointer) |
1269 | || *input_line_pointer == '"') | |
38462edf JJ |
1270 | break; |
1271 | } | |
1272 | ||
1273 | demand_empty_rest_of_line (); | |
3d3424e9 MF |
1274 | if (cfi_sections_set |
1275 | && (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) | |
9e1a8675 AM |
1276 | && ((cfi_sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) |
1277 | != (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)))) | |
2f0c68f2 | 1278 | as_bad (_("inconsistent uses of .cfi_sections")); |
38462edf JJ |
1279 | cfi_sections = sections; |
1280 | } | |
1281 | ||
54cfded0 | 1282 | static void |
a4447b93 | 1283 | dot_cfi_startproc (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1284 | { |
a4447b93 | 1285 | int simple = 0; |
39b82151 | 1286 | |
ae424f82 | 1287 | if (frchain_now->frch_cfi_data != NULL) |
54cfded0 AM |
1288 | { |
1289 | as_bad (_("previous CFI entry not closed (missing .cfi_endproc)")); | |
7c9c8381 | 1290 | ignore_rest_of_line (); |
54cfded0 AM |
1291 | return; |
1292 | } | |
1293 | ||
a4447b93 | 1294 | cfi_new_fde (symbol_temp_new_now ()); |
39b82151 | 1295 | |
a4447b93 | 1296 | SKIP_WHITESPACE (); |
d02603dc | 1297 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
a4447b93 | 1298 | { |
d02603dc | 1299 | char * saved_ilp = input_line_pointer; |
a4447b93 | 1300 | char *name, c; |
54cfded0 | 1301 | |
d02603dc | 1302 | c = get_symbol_name (& name); |
54cfded0 | 1303 | |
a4447b93 RH |
1304 | if (strcmp (name, "simple") == 0) |
1305 | { | |
1306 | simple = 1; | |
d02603dc | 1307 | restore_line_pointer (c); |
a4447b93 RH |
1308 | } |
1309 | else | |
d02603dc | 1310 | input_line_pointer = saved_ilp; |
a4447b93 RH |
1311 | } |
1312 | demand_empty_rest_of_line (); | |
1313 | ||
bd5608dc | 1314 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1315 | all_cfi_sections |= cfi_sections; |
1316 | cfi_set_sections (); | |
ae424f82 | 1317 | frchain_now->frch_cfi_data->cur_cfa_offset = 0; |
a4447b93 | 1318 | if (!simple) |
39b82151 | 1319 | tc_cfi_frame_initial_instructions (); |
1bce6bd8 PB |
1320 | |
1321 | if ((cfi_sections & CFI_EMIT_target) != 0) | |
1322 | tc_cfi_startproc (); | |
54cfded0 AM |
1323 | } |
1324 | ||
a4447b93 RH |
1325 | static void |
1326 | dot_cfi_endproc (int ignored ATTRIBUTE_UNUSED) | |
1327 | { | |
ae424f82 | 1328 | if (frchain_now->frch_cfi_data == NULL) |
a4447b93 RH |
1329 | { |
1330 | as_bad (_(".cfi_endproc without corresponding .cfi_startproc")); | |
7c9c8381 | 1331 | ignore_rest_of_line (); |
a4447b93 RH |
1332 | return; |
1333 | } | |
54cfded0 | 1334 | |
2f0c68f2 | 1335 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; |
1bce6bd8 | 1336 | |
a4447b93 | 1337 | cfi_end_fde (symbol_temp_new_now ()); |
7c9c8381 JB |
1338 | |
1339 | demand_empty_rest_of_line (); | |
1bce6bd8 | 1340 | |
bd5608dc | 1341 | cfi_sections_set = TRUE; |
1bce6bd8 | 1342 | if ((cfi_sections & CFI_EMIT_target) != 0) |
2f0c68f2 | 1343 | tc_cfi_endproc (last_fde); |
a4447b93 | 1344 | } |
39b82151 | 1345 | |
2f0c68f2 CM |
1346 | static segT |
1347 | get_cfi_seg (segT cseg, const char *base, flagword flags, int align) | |
54cfded0 | 1348 | { |
2f0c68f2 CM |
1349 | /* Exclude .debug_frame sections for Compact EH. */ |
1350 | if (SUPPORT_FRAME_LINKONCE || ((flags & SEC_DEBUGGING) == 0 && compact_eh)) | |
1351 | { | |
1352 | struct dwcfi_seg_list *l; | |
1353 | ||
1354 | l = dwcfi_hash_find_or_make (cseg, base, flags); | |
1355 | ||
1356 | cseg = l->seg; | |
1357 | subseg_set (cseg, l->subseg); | |
1358 | } | |
1359 | else | |
1360 | { | |
1361 | cseg = subseg_new (base, 0); | |
1362 | bfd_set_section_flags (stdoutput, cseg, flags); | |
1363 | } | |
1364 | record_alignment (cseg, align); | |
1365 | return cseg; | |
a4447b93 | 1366 | } |
54cfded0 | 1367 | |
2f0c68f2 CM |
1368 | #if SUPPORT_COMPACT_EH |
1369 | static void | |
1370 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1371 | { | |
1372 | struct fde_entry *fde; | |
54cfded0 | 1373 | |
2f0c68f2 CM |
1374 | if (frchain_now->frch_cfi_data == NULL) |
1375 | { | |
1376 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1377 | ignore_rest_of_line (); | |
1378 | return; | |
1379 | } | |
1380 | ||
1381 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1382 | fde->personality_id = cfi_parse_const (); | |
1383 | demand_empty_rest_of_line (); | |
1384 | ||
1385 | if (fde->personality_id == 0 || fde->personality_id > 3) | |
1386 | { | |
1387 | as_bad (_("wrong argument to .cfi_personality_id")); | |
1388 | return; | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | static void | |
1393 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) | |
a4447b93 | 1394 | { |
2f0c68f2 CM |
1395 | if (frchain_now->frch_cfi_data == NULL) |
1396 | { | |
1397 | as_bad (_(".cfi_fde_data without corresponding .cfi_startproc")); | |
1398 | ignore_rest_of_line (); | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1403 | ||
bd5608dc | 1404 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
1405 | if ((cfi_sections & CFI_EMIT_target) != 0 |
1406 | || (cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
1407 | { | |
1408 | struct cfi_escape_data *head, **tail, *e; | |
1409 | int num_ops = 0; | |
1410 | ||
1411 | tail = &head; | |
1412 | if (!is_it_end_of_statement ()) | |
1413 | { | |
1414 | num_ops = 0; | |
1415 | do | |
1416 | { | |
add39d23 | 1417 | e = XNEW (struct cfi_escape_data); |
2f0c68f2 CM |
1418 | do_parse_cons_expression (&e->exp, 1); |
1419 | *tail = e; | |
1420 | tail = &e->next; | |
1421 | num_ops++; | |
1422 | } | |
1423 | while (*input_line_pointer++ == ','); | |
1424 | --input_line_pointer; | |
1425 | } | |
1426 | *tail = NULL; | |
1427 | ||
1428 | if (last_fde->lsda_encoding != DW_EH_PE_omit) | |
1429 | last_fde->eh_header_type = EH_COMPACT_HAS_LSDA; | |
1430 | else if (num_ops <= 3 && last_fde->per_encoding == DW_EH_PE_omit) | |
1431 | last_fde->eh_header_type = EH_COMPACT_INLINE; | |
1432 | else | |
1433 | last_fde->eh_header_type = EH_COMPACT_OUTLINE; | |
1434 | ||
1435 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1436 | num_ops = 3; | |
1437 | ||
1438 | last_fde->eh_data_size = num_ops; | |
add39d23 | 1439 | last_fde->eh_data = XNEWVEC (bfd_byte, num_ops); |
2f0c68f2 CM |
1440 | num_ops = 0; |
1441 | while (head) | |
1442 | { | |
1443 | e = head; | |
1444 | head = e->next; | |
1445 | last_fde->eh_data[num_ops++] = e->exp.X_add_number; | |
1446 | free (e); | |
1447 | } | |
1448 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1449 | while (num_ops < 3) | |
1450 | last_fde->eh_data[num_ops++] = tc_compact_eh_opcode_stop; | |
1451 | } | |
1452 | ||
1453 | demand_empty_rest_of_line (); | |
a4447b93 | 1454 | } |
54cfded0 | 1455 | |
2f0c68f2 CM |
1456 | /* Function to emit the compact unwinding opcodes stored in the |
1457 | fde's eh_data field. The end of the opcode data will be | |
1458 | padded to the value in align. */ | |
54cfded0 | 1459 | |
2f0c68f2 CM |
1460 | static void |
1461 | output_compact_unwind_data (struct fde_entry *fde, int align) | |
a4447b93 | 1462 | { |
2f0c68f2 CM |
1463 | int data_size = fde->eh_data_size + 2; |
1464 | int align_padding; | |
1465 | int amask; | |
1466 | char *p; | |
1467 | ||
1468 | fde->eh_loc = symbol_temp_new_now (); | |
1469 | ||
1470 | p = frag_more (1); | |
1471 | if (fde->personality_id != 0) | |
1472 | *p = fde->personality_id; | |
1473 | else if (fde->per_encoding != DW_EH_PE_omit) | |
1474 | { | |
1475 | *p = 0; | |
1476 | emit_expr_encoded (&fde->personality, fde->per_encoding, FALSE); | |
1477 | data_size += encoding_size (fde->per_encoding); | |
1478 | } | |
1479 | else | |
1480 | *p = 1; | |
1481 | ||
1482 | amask = (1 << align) - 1; | |
1483 | align_padding = ((data_size + amask) & ~amask) - data_size; | |
1484 | ||
1485 | p = frag_more (fde->eh_data_size + 1 + align_padding); | |
1486 | memcpy (p, fde->eh_data, fde->eh_data_size); | |
1487 | p += fde->eh_data_size; | |
1488 | ||
1489 | while (align_padding-- > 0) | |
1490 | *(p++) = tc_compact_eh_opcode_pad; | |
1491 | ||
1492 | *(p++) = tc_compact_eh_opcode_stop; | |
1493 | fde->eh_header_type = EH_COMPACT_OUTLINE_DONE; | |
a4447b93 RH |
1494 | } |
1495 | ||
2f0c68f2 CM |
1496 | /* Handle the .cfi_inline_lsda directive. */ |
1497 | static void | |
1498 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) | |
1499 | { | |
1500 | segT ccseg; | |
1501 | int align; | |
1502 | long max_alignment = 28; | |
1503 | ||
1504 | if (!last_fde) | |
1505 | { | |
1506 | as_bad (_("unexpected .cfi_inline_lsda")); | |
1507 | ignore_rest_of_line (); | |
1508 | return; | |
1509 | } | |
1510 | ||
1511 | if ((last_fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
1512 | { | |
1513 | as_bad (_(".cfi_inline_lsda not valid for this frame")); | |
1514 | ignore_rest_of_line (); | |
1515 | return; | |
1516 | } | |
1517 | ||
1518 | if (last_fde->eh_header_type != EH_COMPACT_UNKNOWN | |
1519 | && last_fde->eh_header_type != EH_COMPACT_HAS_LSDA) | |
1520 | { | |
1521 | as_bad (_(".cfi_inline_lsda seen for frame without .cfi_lsda")); | |
1522 | ignore_rest_of_line (); | |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | #ifdef md_flush_pending_output | |
1527 | md_flush_pending_output (); | |
1528 | #endif | |
1529 | ||
1530 | align = get_absolute_expression (); | |
1531 | if (align > max_alignment) | |
1532 | { | |
1533 | align = max_alignment; | |
1534 | as_bad (_("Alignment too large: %d. assumed."), align); | |
1535 | } | |
1536 | else if (align < 0) | |
1537 | { | |
1538 | as_warn (_("Alignment negative: 0 assumed.")); | |
1539 | align = 0; | |
1540 | } | |
1541 | ||
1542 | demand_empty_rest_of_line (); | |
1543 | ccseg = CUR_SEG (last_fde); | |
54cfded0 | 1544 | |
2f0c68f2 CM |
1545 | /* Open .gnu_extab section. */ |
1546 | get_cfi_seg (ccseg, ".gnu_extab", | |
1547 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
1548 | | DWARF2_EH_FRAME_READ_ONLY), | |
1549 | 1); | |
1550 | ||
1551 | frag_align (align, 0, 0); | |
1552 | record_alignment (now_seg, align); | |
1553 | if (last_fde->eh_header_type == EH_COMPACT_HAS_LSDA) | |
1554 | output_compact_unwind_data (last_fde, align); | |
1555 | ||
1556 | last_fde = NULL; | |
1557 | ||
1558 | return; | |
1559 | } | |
1560 | #else /* !SUPPORT_COMPACT_EH */ | |
a4447b93 | 1561 | static void |
2f0c68f2 | 1562 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) |
a4447b93 | 1563 | { |
2f0c68f2 CM |
1564 | as_bad (_(".cfi_inline_lsda is not supported for this target")); |
1565 | ignore_rest_of_line (); | |
54cfded0 AM |
1566 | } |
1567 | ||
a4447b93 | 1568 | static void |
2f0c68f2 | 1569 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1570 | { |
2f0c68f2 CM |
1571 | as_bad (_(".cfi_fde_data is not supported for this target")); |
1572 | ignore_rest_of_line (); | |
a4447b93 | 1573 | } |
54cfded0 | 1574 | |
2f0c68f2 CM |
1575 | static void |
1576 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1577 | { | |
1578 | as_bad (_(".cfi_personality_id is not supported for this target")); | |
1579 | ignore_rest_of_line (); | |
1580 | } | |
1581 | #endif | |
1582 | \f | |
a4447b93 RH |
1583 | static void |
1584 | output_cfi_insn (struct cfi_insn_data *insn) | |
1585 | { | |
1586 | offsetT offset; | |
1587 | unsigned int regno; | |
54cfded0 | 1588 | |
a4447b93 | 1589 | switch (insn->insn) |
54cfded0 | 1590 | { |
a4447b93 RH |
1591 | case DW_CFA_advance_loc: |
1592 | { | |
1593 | symbolS *from = insn->u.ll.lab1; | |
1594 | symbolS *to = insn->u.ll.lab2; | |
1595 | ||
1596 | if (symbol_get_frag (to) == symbol_get_frag (from)) | |
1597 | { | |
1598 | addressT delta = S_GET_VALUE (to) - S_GET_VALUE (from); | |
1599 | addressT scaled = delta / DWARF2_LINE_MIN_INSN_LENGTH; | |
1600 | ||
1601 | if (scaled <= 0x3F) | |
1602 | out_one (DW_CFA_advance_loc + scaled); | |
395e8345 | 1603 | else if (scaled <= 0xFF) |
a4447b93 | 1604 | { |
9b8ae42e | 1605 | out_one (DW_CFA_advance_loc1); |
395e8345 | 1606 | out_one (scaled); |
a4447b93 | 1607 | } |
395e8345 | 1608 | else if (scaled <= 0xFFFF) |
a4447b93 | 1609 | { |
9b8ae42e | 1610 | out_one (DW_CFA_advance_loc2); |
395e8345 | 1611 | out_two (scaled); |
a4447b93 RH |
1612 | } |
1613 | else | |
1614 | { | |
9b8ae42e | 1615 | out_one (DW_CFA_advance_loc4); |
395e8345 | 1616 | out_four (scaled); |
a4447b93 RH |
1617 | } |
1618 | } | |
1619 | else | |
1620 | { | |
1621 | expressionS exp; | |
1622 | ||
1623 | exp.X_op = O_subtract; | |
1624 | exp.X_add_symbol = to; | |
1625 | exp.X_op_symbol = from; | |
1626 | exp.X_add_number = 0; | |
1627 | ||
1628 | /* The code in ehopt.c expects that one byte of the encoding | |
1629 | is already allocated to the frag. This comes from the way | |
1630 | that it scans the .eh_frame section looking first for the | |
1631 | .byte DW_CFA_advance_loc4. */ | |
1fbfe785 | 1632 | *frag_more (1) = DW_CFA_advance_loc4; |
a4447b93 RH |
1633 | |
1634 | frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3, | |
1635 | make_expr_symbol (&exp), frag_now_fix () - 1, | |
1636 | (char *) frag_now); | |
1637 | } | |
1638 | } | |
1639 | break; | |
1640 | ||
1641 | case DW_CFA_def_cfa: | |
1642 | offset = insn->u.ri.offset; | |
1643 | if (offset < 0) | |
54cfded0 | 1644 | { |
a4447b93 RH |
1645 | out_one (DW_CFA_def_cfa_sf); |
1646 | out_uleb128 (insn->u.ri.reg); | |
dcb45a06 | 1647 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
54cfded0 AM |
1648 | } |
1649 | else | |
1650 | { | |
a4447b93 RH |
1651 | out_one (DW_CFA_def_cfa); |
1652 | out_uleb128 (insn->u.ri.reg); | |
1653 | out_uleb128 (offset); | |
54cfded0 AM |
1654 | } |
1655 | break; | |
1656 | ||
a4447b93 | 1657 | case DW_CFA_def_cfa_register: |
2be24b54 ML |
1658 | case DW_CFA_undefined: |
1659 | case DW_CFA_same_value: | |
1660 | out_one (insn->insn); | |
1661 | out_uleb128 (insn->u.r); | |
54cfded0 AM |
1662 | break; |
1663 | ||
a4447b93 RH |
1664 | case DW_CFA_def_cfa_offset: |
1665 | offset = insn->u.i; | |
1666 | if (offset < 0) | |
1667 | { | |
1668 | out_one (DW_CFA_def_cfa_offset_sf); | |
dcb45a06 | 1669 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
a4447b93 RH |
1670 | } |
1671 | else | |
1672 | { | |
1673 | out_one (DW_CFA_def_cfa_offset); | |
1674 | out_uleb128 (offset); | |
1675 | } | |
54cfded0 AM |
1676 | break; |
1677 | ||
2be24b54 ML |
1678 | case DW_CFA_restore: |
1679 | regno = insn->u.r; | |
1680 | if (regno <= 0x3F) | |
1681 | { | |
1682 | out_one (DW_CFA_restore + regno); | |
1683 | } | |
1684 | else | |
1685 | { | |
1686 | out_one (DW_CFA_restore_extended); | |
1687 | out_uleb128 (regno); | |
1688 | } | |
1689 | break; | |
1690 | ||
a4447b93 RH |
1691 | case DW_CFA_offset: |
1692 | regno = insn->u.ri.reg; | |
1693 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1694 | if (offset < 0) | |
1695 | { | |
1233ae62 | 1696 | out_one (DW_CFA_offset_extended_sf); |
a4447b93 RH |
1697 | out_uleb128 (regno); |
1698 | out_sleb128 (offset); | |
1699 | } | |
1700 | else if (regno <= 0x3F) | |
1701 | { | |
1702 | out_one (DW_CFA_offset + regno); | |
1703 | out_uleb128 (offset); | |
1704 | } | |
54cfded0 AM |
1705 | else |
1706 | { | |
a4447b93 RH |
1707 | out_one (DW_CFA_offset_extended); |
1708 | out_uleb128 (regno); | |
1709 | out_uleb128 (offset); | |
54cfded0 | 1710 | } |
54cfded0 AM |
1711 | break; |
1712 | ||
084303b8 AK |
1713 | case DW_CFA_val_offset: |
1714 | regno = insn->u.ri.reg; | |
1715 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1716 | if (offset < 0) | |
1717 | { | |
1718 | out_one (DW_CFA_val_offset_sf); | |
1719 | out_uleb128 (regno); | |
1720 | out_sleb128 (offset); | |
1721 | } | |
1722 | else | |
1723 | { | |
1724 | out_one (DW_CFA_val_offset); | |
1725 | out_uleb128 (regno); | |
1726 | out_uleb128 (offset); | |
1727 | } | |
1728 | break; | |
1729 | ||
a4447b93 RH |
1730 | case DW_CFA_register: |
1731 | out_one (DW_CFA_register); | |
1732 | out_uleb128 (insn->u.rr.reg1); | |
1733 | out_uleb128 (insn->u.rr.reg2); | |
39b82151 ML |
1734 | break; |
1735 | ||
2be24b54 ML |
1736 | case DW_CFA_remember_state: |
1737 | case DW_CFA_restore_state: | |
2be24b54 | 1738 | out_one (insn->insn); |
54cfded0 AM |
1739 | break; |
1740 | ||
364b6d8b JJ |
1741 | case DW_CFA_GNU_window_save: |
1742 | out_one (DW_CFA_GNU_window_save); | |
1743 | break; | |
1744 | ||
cdfbf930 RH |
1745 | case CFI_escape: |
1746 | { | |
1747 | struct cfi_escape_data *e; | |
1748 | for (e = insn->u.esc; e ; e = e->next) | |
1749 | emit_expr (&e->exp, 1); | |
1750 | break; | |
1751 | } | |
1752 | ||
f1c4cc75 RH |
1753 | case CFI_val_encoded_addr: |
1754 | { | |
83e12deb | 1755 | unsigned encoding = insn->u.ea.encoding; |
2f0c68f2 | 1756 | offsetT enc_size; |
f1c4cc75 RH |
1757 | |
1758 | if (encoding == DW_EH_PE_omit) | |
1759 | break; | |
1760 | out_one (DW_CFA_val_expression); | |
1761 | out_uleb128 (insn->u.ea.reg); | |
1762 | ||
83e12deb | 1763 | switch (encoding & 0x7) |
f1c4cc75 RH |
1764 | { |
1765 | case DW_EH_PE_absptr: | |
2f0c68f2 | 1766 | enc_size = DWARF2_ADDR_SIZE (stdoutput); |
f1c4cc75 RH |
1767 | break; |
1768 | case DW_EH_PE_udata2: | |
2f0c68f2 | 1769 | enc_size = 2; |
f1c4cc75 RH |
1770 | break; |
1771 | case DW_EH_PE_udata4: | |
2f0c68f2 | 1772 | enc_size = 4; |
f1c4cc75 RH |
1773 | break; |
1774 | case DW_EH_PE_udata8: | |
2f0c68f2 | 1775 | enc_size = 8; |
f1c4cc75 RH |
1776 | break; |
1777 | default: | |
1778 | abort (); | |
1779 | } | |
1780 | ||
1781 | /* If the user has requested absolute encoding, | |
1782 | then use the smaller DW_OP_addr encoding. */ | |
1783 | if (insn->u.ea.encoding == DW_EH_PE_absptr) | |
1784 | { | |
2f0c68f2 | 1785 | out_uleb128 (1 + enc_size); |
f1c4cc75 RH |
1786 | out_one (DW_OP_addr); |
1787 | } | |
1788 | else | |
1789 | { | |
2f0c68f2 | 1790 | out_uleb128 (1 + 1 + enc_size); |
f1c4cc75 RH |
1791 | out_one (DW_OP_GNU_encoded_addr); |
1792 | out_one (encoding); | |
1793 | ||
1794 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1795 | { | |
1796 | #if CFI_DIFF_EXPR_OK | |
1797 | insn->u.ea.exp.X_op = O_subtract; | |
1798 | insn->u.ea.exp.X_op_symbol = symbol_temp_new_now (); | |
1799 | #elif defined (tc_cfi_emit_pcrel_expr) | |
2f0c68f2 | 1800 | tc_cfi_emit_pcrel_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1801 | break; |
1802 | #else | |
1803 | abort (); | |
1804 | #endif | |
1805 | } | |
1806 | } | |
2f0c68f2 | 1807 | emit_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1808 | } |
1809 | break; | |
72b016b4 | 1810 | |
69602580 JB |
1811 | case CFI_label: |
1812 | colon (insn->u.sym_name); | |
1813 | break; | |
1814 | ||
54cfded0 | 1815 | default: |
a4447b93 | 1816 | abort (); |
54cfded0 | 1817 | } |
54cfded0 AM |
1818 | } |
1819 | ||
1820 | static void | |
38462edf | 1821 | output_cie (struct cie_entry *cie, bfd_boolean eh_frame, int align) |
54cfded0 | 1822 | { |
a4447b93 | 1823 | symbolS *after_size_address, *end_address; |
7c0295b1 | 1824 | expressionS exp; |
a4447b93 | 1825 | struct cfi_insn_data *i; |
9b8ae42e | 1826 | offsetT augmentation_size; |
8c9b70b1 | 1827 | int enc; |
38462edf | 1828 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
a4447b93 RH |
1829 | |
1830 | cie->start_address = symbol_temp_new_now (); | |
1831 | after_size_address = symbol_temp_make (); | |
1832 | end_address = symbol_temp_make (); | |
1833 | ||
1834 | exp.X_op = O_subtract; | |
1835 | exp.X_add_symbol = end_address; | |
1836 | exp.X_op_symbol = after_size_address; | |
1837 | exp.X_add_number = 0; | |
1838 | ||
38462edf JJ |
1839 | if (eh_frame || fmt == dwarf2_format_32bit) |
1840 | emit_expr (&exp, 4); /* Length. */ | |
1841 | else | |
1842 | { | |
1843 | if (fmt == dwarf2_format_64bit) | |
1844 | out_four (-1); | |
1845 | emit_expr (&exp, 8); /* Length. */ | |
1846 | } | |
a4447b93 | 1847 | symbol_set_value_now (after_size_address); |
38462edf JJ |
1848 | if (eh_frame) |
1849 | out_four (0); /* CIE id. */ | |
1850 | else | |
1851 | { | |
1852 | out_four (-1); /* CIE id. */ | |
1853 | if (fmt != dwarf2_format_32bit) | |
1854 | out_four (-1); | |
1855 | } | |
289040ca | 1856 | out_one (DW_CIE_VERSION); /* Version. */ |
38462edf JJ |
1857 | if (eh_frame) |
1858 | { | |
1859 | out_one ('z'); /* Augmentation. */ | |
1860 | if (cie->per_encoding != DW_EH_PE_omit) | |
1861 | out_one ('P'); | |
1862 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1863 | out_one ('L'); | |
1864 | out_one ('R'); | |
09038062 | 1865 | #ifdef tc_output_cie_extra |
c6803386 | 1866 | tc_output_cie_extra (cie); |
09038062 | 1867 | #endif |
38462edf | 1868 | } |
d905c788 TS |
1869 | if (cie->signal_frame) |
1870 | out_one ('S'); | |
a4447b93 | 1871 | out_one (0); |
289040ca NC |
1872 | out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */ |
1873 | out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */ | |
0da76f83 NC |
1874 | if (DW_CIE_VERSION == 1) /* Return column. */ |
1875 | out_one (cie->return_column); | |
1876 | else | |
1877 | out_uleb128 (cie->return_column); | |
38462edf JJ |
1878 | if (eh_frame) |
1879 | { | |
1880 | augmentation_size = 1 + (cie->lsda_encoding != DW_EH_PE_omit); | |
1881 | if (cie->per_encoding != DW_EH_PE_omit) | |
1882 | augmentation_size += 1 + encoding_size (cie->per_encoding); | |
1883 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
4e4e1355 | 1884 | |
2f0c68f2 | 1885 | emit_expr_encoded (&cie->personality, cie->per_encoding, TRUE); |
4e4e1355 TS |
1886 | |
1887 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1888 | out_one (cie->lsda_encoding); | |
9b8ae42e | 1889 | } |
8c9b70b1 RH |
1890 | |
1891 | switch (DWARF2_FDE_RELOC_SIZE) | |
1892 | { | |
1893 | case 2: | |
1894 | enc = DW_EH_PE_sdata2; | |
1895 | break; | |
1896 | case 4: | |
1897 | enc = DW_EH_PE_sdata4; | |
1898 | break; | |
1899 | case 8: | |
1900 | enc = DW_EH_PE_sdata8; | |
1901 | break; | |
1902 | default: | |
1903 | abort (); | |
1904 | } | |
3dd24306 | 1905 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
8c9b70b1 | 1906 | enc |= DW_EH_PE_pcrel; |
364b6d8b | 1907 | #endif |
2f0c68f2 CM |
1908 | #ifdef DWARF2_FDE_RELOC_ENCODING |
1909 | /* Allow target to override encoding. */ | |
1910 | enc = DWARF2_FDE_RELOC_ENCODING (enc); | |
1911 | #endif | |
1912 | cie->fde_encoding = enc; | |
38462edf JJ |
1913 | if (eh_frame) |
1914 | out_one (enc); | |
a4447b93 RH |
1915 | |
1916 | if (cie->first) | |
72b016b4 NC |
1917 | { |
1918 | for (i = cie->first; i != cie->last; i = i->next) | |
83e12deb | 1919 | { |
6303c4ae | 1920 | if (CUR_SEG (i) != CUR_SEG (cie)) |
72b016b4 NC |
1921 | continue; |
1922 | output_cfi_insn (i); | |
1923 | } | |
1924 | } | |
a4447b93 | 1925 | |
38462edf | 1926 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
1927 | symbol_set_value_now (end_address); |
1928 | } | |
54cfded0 | 1929 | |
a4447b93 RH |
1930 | static void |
1931 | output_fde (struct fde_entry *fde, struct cie_entry *cie, | |
38462edf JJ |
1932 | bfd_boolean eh_frame, struct cfi_insn_data *first, |
1933 | int align) | |
a4447b93 RH |
1934 | { |
1935 | symbolS *after_size_address, *end_address; | |
1936 | expressionS exp; | |
9b8ae42e | 1937 | offsetT augmentation_size; |
38462edf | 1938 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
ea0de82e AM |
1939 | unsigned int offset_size; |
1940 | unsigned int addr_size; | |
54cfded0 | 1941 | |
a4447b93 RH |
1942 | after_size_address = symbol_temp_make (); |
1943 | end_address = symbol_temp_make (); | |
54cfded0 | 1944 | |
a4447b93 RH |
1945 | exp.X_op = O_subtract; |
1946 | exp.X_add_symbol = end_address; | |
1947 | exp.X_op_symbol = after_size_address; | |
1948 | exp.X_add_number = 0; | |
38462edf JJ |
1949 | if (eh_frame || fmt == dwarf2_format_32bit) |
1950 | offset_size = 4; | |
1951 | else | |
1952 | { | |
1953 | if (fmt == dwarf2_format_64bit) | |
1954 | out_four (-1); | |
1955 | offset_size = 8; | |
1956 | } | |
1957 | emit_expr (&exp, offset_size); /* Length. */ | |
a4447b93 | 1958 | symbol_set_value_now (after_size_address); |
54cfded0 | 1959 | |
38462edf JJ |
1960 | if (eh_frame) |
1961 | { | |
3251495b | 1962 | exp.X_op = O_subtract; |
38462edf JJ |
1963 | exp.X_add_symbol = after_size_address; |
1964 | exp.X_op_symbol = cie->start_address; | |
3251495b RH |
1965 | exp.X_add_number = 0; |
1966 | emit_expr (&exp, offset_size); /* CIE offset. */ | |
38462edf JJ |
1967 | } |
1968 | else | |
1969 | { | |
3251495b | 1970 | TC_DWARF2_EMIT_OFFSET (cie->start_address, offset_size); |
38462edf | 1971 | } |
364b6d8b | 1972 | |
2f0c68f2 | 1973 | exp.X_op = O_symbol; |
38462edf JJ |
1974 | if (eh_frame) |
1975 | { | |
2f0c68f2 CM |
1976 | bfd_reloc_code_real_type code |
1977 | = tc_cfi_reloc_for_encoding (cie->fde_encoding); | |
ea0de82e | 1978 | addr_size = DWARF2_FDE_RELOC_SIZE; |
2f0c68f2 CM |
1979 | if (code != BFD_RELOC_NONE) |
1980 | { | |
1981 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
ea0de82e | 1982 | char *p = frag_more (addr_size); |
86b9fea1 | 1983 | gas_assert (addr_size == (unsigned) howto->bitsize / 8); |
ea0de82e AM |
1984 | md_number_to_chars (p, 0, addr_size); |
1985 | fix_new (frag_now, p - frag_now->fr_literal, addr_size, | |
1986 | fde->start_address, 0, howto->pc_relative, code); | |
2f0c68f2 CM |
1987 | } |
1988 | else | |
1989 | { | |
1990 | exp.X_op = O_subtract; | |
1991 | exp.X_add_number = 0; | |
3dd24306 | 1992 | #if CFI_DIFF_EXPR_OK |
2f0c68f2 CM |
1993 | exp.X_add_symbol = fde->start_address; |
1994 | exp.X_op_symbol = symbol_temp_new_now (); | |
ea0de82e | 1995 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 1996 | #else |
2f0c68f2 CM |
1997 | exp.X_op = O_symbol; |
1998 | exp.X_add_symbol = fde->start_address; | |
1999 | ||
2000 | #if defined(tc_cfi_emit_pcrel_expr) | |
ea0de82e | 2001 | tc_cfi_emit_pcrel_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2002 | #else |
ea0de82e | 2003 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2004 | #endif |
364b6d8b | 2005 | #endif |
2f0c68f2 | 2006 | } |
38462edf JJ |
2007 | } |
2008 | else | |
2009 | { | |
3251495b | 2010 | exp.X_add_number = 0; |
2f0c68f2 | 2011 | exp.X_add_symbol = fde->start_address; |
38462edf JJ |
2012 | addr_size = DWARF2_ADDR_SIZE (stdoutput); |
2013 | emit_expr (&exp, addr_size); | |
2014 | } | |
54cfded0 | 2015 | |
38462edf | 2016 | exp.X_op = O_subtract; |
a4447b93 | 2017 | exp.X_add_symbol = fde->end_address; |
289040ca | 2018 | exp.X_op_symbol = fde->start_address; /* Code length. */ |
3251495b | 2019 | exp.X_add_number = 0; |
38462edf | 2020 | emit_expr (&exp, addr_size); |
54cfded0 | 2021 | |
9b8ae42e | 2022 | augmentation_size = encoding_size (fde->lsda_encoding); |
38462edf JJ |
2023 | if (eh_frame) |
2024 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
9b8ae42e | 2025 | |
2f0c68f2 | 2026 | emit_expr_encoded (&fde->lsda, cie->lsda_encoding, FALSE); |
39b82151 | 2027 | |
a4447b93 | 2028 | for (; first; first = first->next) |
6303c4ae | 2029 | if (CUR_SEG (first) == CUR_SEG (fde)) |
67ed7401 | 2030 | output_cfi_insn (first); |
39b82151 | 2031 | |
4df6ce47 | 2032 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
2033 | symbol_set_value_now (end_address); |
2034 | } | |
2035 | ||
2036 | static struct cie_entry * | |
38462edf JJ |
2037 | select_cie_for_fde (struct fde_entry *fde, bfd_boolean eh_frame, |
2038 | struct cfi_insn_data **pfirst, int align) | |
a4447b93 RH |
2039 | { |
2040 | struct cfi_insn_data *i, *j; | |
2041 | struct cie_entry *cie; | |
2042 | ||
2043 | for (cie = cie_root; cie; cie = cie->next) | |
39b82151 | 2044 | { |
6303c4ae | 2045 | if (CUR_SEG (cie) != CUR_SEG (fde)) |
67ed7401 | 2046 | continue; |
09038062 ST |
2047 | #ifdef tc_cie_fde_equivalent_extra |
2048 | if (!tc_cie_fde_equivalent_extra (cie, fde)) | |
2049 | continue; | |
2050 | #endif | |
67ed7401 | 2051 | if (cie->return_column != fde->return_column |
9b8ae42e JJ |
2052 | || cie->signal_frame != fde->signal_frame |
2053 | || cie->per_encoding != fde->per_encoding | |
2054 | || cie->lsda_encoding != fde->lsda_encoding) | |
a4447b93 | 2055 | continue; |
9b8ae42e JJ |
2056 | if (cie->per_encoding != DW_EH_PE_omit) |
2057 | { | |
2058 | if (cie->personality.X_op != fde->personality.X_op | |
9e1a8675 AM |
2059 | || (cie->personality.X_add_number |
2060 | != fde->personality.X_add_number)) | |
9b8ae42e JJ |
2061 | continue; |
2062 | switch (cie->personality.X_op) | |
2063 | { | |
2064 | case O_constant: | |
2065 | if (cie->personality.X_unsigned != fde->personality.X_unsigned) | |
2066 | continue; | |
2067 | break; | |
2068 | case O_symbol: | |
2069 | if (cie->personality.X_add_symbol | |
2070 | != fde->personality.X_add_symbol) | |
2071 | continue; | |
2072 | break; | |
2073 | default: | |
2074 | abort (); | |
2075 | } | |
2076 | } | |
a4447b93 RH |
2077 | for (i = cie->first, j = fde->data; |
2078 | i != cie->last && j != NULL; | |
2079 | i = i->next, j = j->next) | |
39b82151 | 2080 | { |
a4447b93 RH |
2081 | if (i->insn != j->insn) |
2082 | goto fail; | |
2083 | switch (i->insn) | |
2084 | { | |
2085 | case DW_CFA_advance_loc: | |
289040ca NC |
2086 | case DW_CFA_remember_state: |
2087 | /* We reached the first advance/remember in the FDE, | |
2088 | but did not reach the end of the CIE list. */ | |
a4447b93 RH |
2089 | goto fail; |
2090 | ||
2091 | case DW_CFA_offset: | |
2092 | case DW_CFA_def_cfa: | |
2093 | if (i->u.ri.reg != j->u.ri.reg) | |
2094 | goto fail; | |
2095 | if (i->u.ri.offset != j->u.ri.offset) | |
2096 | goto fail; | |
2097 | break; | |
2098 | ||
2099 | case DW_CFA_register: | |
2100 | if (i->u.rr.reg1 != j->u.rr.reg1) | |
2101 | goto fail; | |
2102 | if (i->u.rr.reg2 != j->u.rr.reg2) | |
2103 | goto fail; | |
2104 | break; | |
2105 | ||
2106 | case DW_CFA_def_cfa_register: | |
2be24b54 ML |
2107 | case DW_CFA_restore: |
2108 | case DW_CFA_undefined: | |
2109 | case DW_CFA_same_value: | |
a4447b93 RH |
2110 | if (i->u.r != j->u.r) |
2111 | goto fail; | |
2112 | break; | |
2113 | ||
2114 | case DW_CFA_def_cfa_offset: | |
2115 | if (i->u.i != j->u.i) | |
2116 | goto fail; | |
2117 | break; | |
2118 | ||
cdfbf930 | 2119 | case CFI_escape: |
f1c4cc75 | 2120 | case CFI_val_encoded_addr: |
73e76108 | 2121 | case CFI_label: |
cdfbf930 RH |
2122 | /* Don't bother matching these for now. */ |
2123 | goto fail; | |
2124 | ||
a4447b93 RH |
2125 | default: |
2126 | abort (); | |
2127 | } | |
39b82151 | 2128 | } |
a4447b93 RH |
2129 | |
2130 | /* Success if we reached the end of the CIE list, and we've either | |
289040ca NC |
2131 | run out of FDE entries or we've encountered an advance, |
2132 | remember, or escape. */ | |
e9fad691 AM |
2133 | if (i == cie->last |
2134 | && (!j | |
2135 | || j->insn == DW_CFA_advance_loc | |
289040ca | 2136 | || j->insn == DW_CFA_remember_state |
f1c4cc75 | 2137 | || j->insn == CFI_escape |
73e76108 JB |
2138 | || j->insn == CFI_val_encoded_addr |
2139 | || j->insn == CFI_label)) | |
39b82151 | 2140 | { |
a4447b93 RH |
2141 | *pfirst = j; |
2142 | return cie; | |
39b82151 ML |
2143 | } |
2144 | ||
a4447b93 | 2145 | fail:; |
54cfded0 AM |
2146 | } |
2147 | ||
add39d23 | 2148 | cie = XNEW (struct cie_entry); |
a4447b93 RH |
2149 | cie->next = cie_root; |
2150 | cie_root = cie; | |
6303c4ae | 2151 | SET_CUR_SEG (cie, CUR_SEG (fde)); |
a4447b93 | 2152 | cie->return_column = fde->return_column; |
63752a75 | 2153 | cie->signal_frame = fde->signal_frame; |
9b8ae42e JJ |
2154 | cie->per_encoding = fde->per_encoding; |
2155 | cie->lsda_encoding = fde->lsda_encoding; | |
2156 | cie->personality = fde->personality; | |
a4447b93 | 2157 | cie->first = fde->data; |
09038062 ST |
2158 | #ifdef tc_cie_entry_init_extra |
2159 | tc_cie_entry_init_extra (cie, fde) | |
2160 | #endif | |
54cfded0 | 2161 | |
a4447b93 | 2162 | for (i = cie->first; i ; i = i->next) |
e9fad691 | 2163 | if (i->insn == DW_CFA_advance_loc |
289040ca | 2164 | || i->insn == DW_CFA_remember_state |
f1c4cc75 | 2165 | || i->insn == CFI_escape |
69602580 JB |
2166 | || i->insn == CFI_val_encoded_addr |
2167 | || i->insn == CFI_label) | |
a4447b93 | 2168 | break; |
54cfded0 | 2169 | |
a4447b93 RH |
2170 | cie->last = i; |
2171 | *pfirst = i; | |
38462edf JJ |
2172 | |
2173 | output_cie (cie, eh_frame, align); | |
54cfded0 | 2174 | |
a4447b93 | 2175 | return cie; |
54cfded0 AM |
2176 | } |
2177 | ||
38462edf JJ |
2178 | #ifdef md_reg_eh_frame_to_debug_frame |
2179 | static void | |
6303c4ae | 2180 | cfi_change_reg_numbers (struct cfi_insn_data *insn, segT ccseg) |
38462edf JJ |
2181 | { |
2182 | for (; insn; insn = insn->next) | |
72b016b4 | 2183 | { |
6303c4ae | 2184 | if (CUR_SEG (insn) != ccseg) |
83e12deb | 2185 | continue; |
72b016b4 NC |
2186 | switch (insn->insn) |
2187 | { | |
2188 | case DW_CFA_advance_loc: | |
2189 | case DW_CFA_def_cfa_offset: | |
2190 | case DW_CFA_remember_state: | |
2191 | case DW_CFA_restore_state: | |
2192 | case DW_CFA_GNU_window_save: | |
2193 | case CFI_escape: | |
73e76108 | 2194 | case CFI_label: |
72b016b4 | 2195 | break; |
38462edf | 2196 | |
72b016b4 NC |
2197 | case DW_CFA_def_cfa: |
2198 | case DW_CFA_offset: | |
2199 | insn->u.ri.reg = md_reg_eh_frame_to_debug_frame (insn->u.ri.reg); | |
2200 | break; | |
38462edf | 2201 | |
72b016b4 NC |
2202 | case DW_CFA_def_cfa_register: |
2203 | case DW_CFA_undefined: | |
2204 | case DW_CFA_same_value: | |
2205 | case DW_CFA_restore: | |
2206 | insn->u.r = md_reg_eh_frame_to_debug_frame (insn->u.r); | |
2207 | break; | |
38462edf | 2208 | |
72b016b4 NC |
2209 | case DW_CFA_register: |
2210 | insn->u.rr.reg1 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg1); | |
2211 | insn->u.rr.reg2 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg2); | |
2212 | break; | |
38462edf | 2213 | |
72b016b4 NC |
2214 | case CFI_val_encoded_addr: |
2215 | insn->u.ea.reg = md_reg_eh_frame_to_debug_frame (insn->u.ea.reg); | |
2216 | break; | |
38462edf | 2217 | |
72b016b4 NC |
2218 | default: |
2219 | abort (); | |
2220 | } | |
2221 | } | |
38462edf JJ |
2222 | } |
2223 | #else | |
72b016b4 | 2224 | #define cfi_change_reg_numbers(insn, cseg) do { } while (0) |
38462edf JJ |
2225 | #endif |
2226 | ||
2f0c68f2 CM |
2227 | #if SUPPORT_COMPACT_EH |
2228 | static void | |
2229 | cfi_emit_eh_header (symbolS *sym, bfd_vma addend) | |
72b016b4 | 2230 | { |
2f0c68f2 | 2231 | expressionS exp; |
72b016b4 | 2232 | |
2f0c68f2 CM |
2233 | exp.X_add_number = addend; |
2234 | exp.X_add_symbol = sym; | |
2235 | emit_expr_encoded (&exp, DW_EH_PE_sdata4 | DW_EH_PE_pcrel, FALSE); | |
2236 | } | |
72b016b4 | 2237 | |
2f0c68f2 CM |
2238 | static void |
2239 | output_eh_header (struct fde_entry *fde) | |
2240 | { | |
2241 | char *p; | |
2242 | bfd_vma addend; | |
2243 | ||
2244 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2245 | addend = 0; | |
2246 | else | |
2247 | addend = 1; | |
2248 | ||
2249 | cfi_emit_eh_header (fde->start_address, addend); | |
2250 | ||
2251 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2252 | { | |
2253 | p = frag_more (4); | |
2254 | /* Inline entries always use PR1. */ | |
2255 | *(p++) = 1; | |
2256 | memcpy(p, fde->eh_data, 3); | |
6303c4ae AM |
2257 | } |
2258 | else | |
2259 | { | |
2f0c68f2 CM |
2260 | if (fde->eh_header_type == EH_COMPACT_LEGACY) |
2261 | addend = 1; | |
2262 | else if (fde->eh_header_type == EH_COMPACT_OUTLINE | |
2263 | || fde->eh_header_type == EH_COMPACT_OUTLINE_DONE) | |
2264 | addend = 0; | |
2265 | else | |
2266 | abort (); | |
2267 | cfi_emit_eh_header (fde->eh_loc, addend); | |
6303c4ae | 2268 | } |
72b016b4 | 2269 | } |
2f0c68f2 | 2270 | #endif |
72b016b4 | 2271 | |
54cfded0 | 2272 | void |
a4447b93 | 2273 | cfi_finish (void) |
54cfded0 | 2274 | { |
72b016b4 NC |
2275 | struct cie_entry *cie, *cie_next; |
2276 | segT cfi_seg, ccseg; | |
a4447b93 | 2277 | struct fde_entry *fde; |
72b016b4 NC |
2278 | struct cfi_insn_data *first; |
2279 | int save_flag_traditional_format, seek_next_seg; | |
54cfded0 | 2280 | |
a4447b93 RH |
2281 | if (all_fde_data == 0) |
2282 | return; | |
54cfded0 | 2283 | |
bd5608dc | 2284 | cfi_sections_set = TRUE; |
2f0c68f2 CM |
2285 | if ((all_cfi_sections & CFI_EMIT_eh_frame) != 0 |
2286 | || (all_cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
38462edf | 2287 | { |
38462edf JJ |
2288 | /* Make sure check_eh_frame doesn't do anything with our output. */ |
2289 | save_flag_traditional_format = flag_traditional_format; | |
2290 | flag_traditional_format = 1; | |
eafbc43f | 2291 | |
2f0c68f2 | 2292 | if (!EH_FRAME_LINKONCE) |
6303c4ae AM |
2293 | { |
2294 | /* Open .eh_frame section. */ | |
2295 | cfi_seg = get_cfi_seg (NULL, ".eh_frame", | |
2296 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2297 | | DWARF2_EH_FRAME_READ_ONLY), | |
2298 | EH_FRAME_ALIGNMENT); | |
67ed7401 | 2299 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2300 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2301 | #else |
6303c4ae | 2302 | (void) cfi_seg; |
67ed7401 | 2303 | #endif |
6303c4ae | 2304 | } |
67ed7401 | 2305 | |
72b016b4 | 2306 | do |
83e12deb | 2307 | { |
72b016b4 | 2308 | ccseg = NULL; |
72b016b4 | 2309 | seek_next_seg = 0; |
67ed7401 | 2310 | |
72b016b4 | 2311 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2312 | { |
72b016b4 NC |
2313 | cie_next = cie->next; |
2314 | free ((void *) cie); | |
38462edf | 2315 | } |
72b016b4 | 2316 | cie_root = NULL; |
38462edf | 2317 | |
72b016b4 NC |
2318 | for (fde = all_fde_data; fde ; fde = fde->next) |
2319 | { | |
2f0c68f2 CM |
2320 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 |
2321 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2322 | continue; | |
2323 | ||
2324 | #if SUPPORT_COMPACT_EH | |
2325 | /* Emit a LEGACY format header if we have processed all | |
9e1a8675 | 2326 | of the .cfi directives without encountering either inline or |
2f0c68f2 CM |
2327 | out-of-line compact unwinding opcodes. */ |
2328 | if (fde->eh_header_type == EH_COMPACT_HAS_LSDA | |
2329 | || fde->eh_header_type == EH_COMPACT_UNKNOWN) | |
2330 | fde->eh_header_type = EH_COMPACT_LEGACY; | |
2331 | ||
2332 | if (fde->eh_header_type != EH_COMPACT_LEGACY) | |
2333 | continue; | |
2334 | #endif | |
2335 | if (EH_FRAME_LINKONCE) | |
6303c4ae AM |
2336 | { |
2337 | if (HANDLED (fde)) | |
2338 | continue; | |
2339 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2340 | { | |
2341 | seek_next_seg = 2; | |
2342 | continue; | |
2343 | } | |
2344 | if (!seek_next_seg) | |
2345 | { | |
2346 | ccseg = CUR_SEG (fde); | |
2347 | /* Open .eh_frame section. */ | |
2348 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame", | |
2349 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2350 | | DWARF2_EH_FRAME_READ_ONLY), | |
2351 | EH_FRAME_ALIGNMENT); | |
72b016b4 | 2352 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2353 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2354 | #else |
6303c4ae | 2355 | (void) cfi_seg; |
72b016b4 | 2356 | #endif |
6303c4ae AM |
2357 | seek_next_seg = 1; |
2358 | } | |
2359 | SET_HANDLED (fde, 1); | |
72b016b4 | 2360 | } |
72b016b4 NC |
2361 | |
2362 | if (fde->end_address == NULL) | |
2363 | { | |
9e1a8675 AM |
2364 | as_bad (_("open CFI at the end of file; " |
2365 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2366 | fde->end_address = fde->start_address; |
2367 | } | |
2368 | ||
2369 | cie = select_cie_for_fde (fde, TRUE, &first, 2); | |
2f0c68f2 | 2370 | fde->eh_loc = symbol_temp_new_now (); |
72b016b4 NC |
2371 | output_fde (fde, cie, TRUE, first, |
2372 | fde->next == NULL ? EH_FRAME_ALIGNMENT : 2); | |
2373 | } | |
38462edf | 2374 | } |
2f0c68f2 | 2375 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2376 | |
2f0c68f2 | 2377 | if (EH_FRAME_LINKONCE) |
6303c4ae AM |
2378 | for (fde = all_fde_data; fde ; fde = fde->next) |
2379 | SET_HANDLED (fde, 0); | |
38462edf | 2380 | |
2f0c68f2 CM |
2381 | #if SUPPORT_COMPACT_EH |
2382 | if (compact_eh) | |
2383 | { | |
2384 | /* Create remaining out of line table entries. */ | |
2385 | do | |
2386 | { | |
2387 | ccseg = NULL; | |
2388 | seek_next_seg = 0; | |
2389 | ||
2390 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2391 | { | |
2392 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2393 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2394 | continue; | |
2395 | ||
2396 | if (fde->eh_header_type != EH_COMPACT_OUTLINE) | |
2397 | continue; | |
2398 | if (HANDLED (fde)) | |
2399 | continue; | |
2400 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2401 | { | |
2402 | seek_next_seg = 2; | |
2403 | continue; | |
2404 | } | |
2405 | if (!seek_next_seg) | |
2406 | { | |
2407 | ccseg = CUR_SEG (fde); | |
2408 | /* Open .gnu_extab section. */ | |
2409 | get_cfi_seg (ccseg, ".gnu_extab", | |
2410 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2411 | | DWARF2_EH_FRAME_READ_ONLY), | |
2412 | 1); | |
2413 | seek_next_seg = 1; | |
2414 | } | |
2415 | SET_HANDLED (fde, 1); | |
2416 | ||
2417 | frag_align (1, 0, 0); | |
2418 | record_alignment (now_seg, 1); | |
2419 | output_compact_unwind_data (fde, 1); | |
2420 | } | |
2421 | } | |
2422 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); | |
2423 | ||
2424 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2425 | SET_HANDLED (fde, 0); | |
2426 | ||
2427 | /* Create index table fragments. */ | |
2428 | do | |
2429 | { | |
2430 | ccseg = NULL; | |
2431 | seek_next_seg = 0; | |
2432 | ||
2433 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2434 | { | |
2435 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2436 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2437 | continue; | |
2438 | ||
2439 | if (HANDLED (fde)) | |
2440 | continue; | |
2441 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2442 | { | |
2443 | seek_next_seg = 2; | |
2444 | continue; | |
2445 | } | |
2446 | if (!seek_next_seg) | |
2447 | { | |
2448 | ccseg = CUR_SEG (fde); | |
2449 | /* Open .eh_frame_entry section. */ | |
2450 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame_entry", | |
2451 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2452 | | DWARF2_EH_FRAME_READ_ONLY), | |
2453 | 2); | |
2454 | seek_next_seg = 1; | |
2455 | } | |
2456 | SET_HANDLED (fde, 1); | |
2457 | ||
2458 | output_eh_header (fde); | |
2459 | } | |
2460 | } | |
2461 | while (seek_next_seg == 2); | |
2462 | ||
2463 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2464 | SET_HANDLED (fde, 0); | |
2465 | } | |
2466 | #endif /* SUPPORT_COMPACT_EH */ | |
2467 | ||
38462edf JJ |
2468 | flag_traditional_format = save_flag_traditional_format; |
2469 | } | |
2470 | ||
bd5608dc | 2471 | cfi_sections_set = TRUE; |
2f0c68f2 | 2472 | if ((all_cfi_sections & CFI_EMIT_debug_frame) != 0) |
a4447b93 | 2473 | { |
38462edf | 2474 | int alignment = ffs (DWARF2_ADDR_SIZE (stdoutput)) - 1; |
a4447b93 | 2475 | |
6303c4ae AM |
2476 | if (!SUPPORT_FRAME_LINKONCE) |
2477 | get_cfi_seg (NULL, ".debug_frame", | |
2478 | SEC_READONLY | SEC_DEBUGGING, | |
2479 | alignment); | |
2480 | ||
72b016b4 | 2481 | do |
83e12deb | 2482 | { |
72b016b4 | 2483 | ccseg = NULL; |
72b016b4 | 2484 | seek_next_seg = 0; |
67ed7401 | 2485 | |
72b016b4 | 2486 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2487 | { |
72b016b4 NC |
2488 | cie_next = cie->next; |
2489 | free ((void *) cie); | |
38462edf | 2490 | } |
72b016b4 | 2491 | cie_root = NULL; |
38462edf | 2492 | |
72b016b4 NC |
2493 | for (fde = all_fde_data; fde ; fde = fde->next) |
2494 | { | |
2f0c68f2 CM |
2495 | if ((fde->sections & CFI_EMIT_debug_frame) == 0) |
2496 | continue; | |
2497 | ||
6303c4ae AM |
2498 | if (SUPPORT_FRAME_LINKONCE) |
2499 | { | |
2500 | if (HANDLED (fde)) | |
2501 | continue; | |
2502 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2503 | { | |
2504 | seek_next_seg = 2; | |
2505 | continue; | |
2506 | } | |
2507 | if (!seek_next_seg) | |
2508 | { | |
2509 | ccseg = CUR_SEG (fde); | |
2510 | /* Open .debug_frame section. */ | |
2511 | get_cfi_seg (ccseg, ".debug_frame", | |
2512 | SEC_READONLY | SEC_DEBUGGING, | |
2513 | alignment); | |
2514 | seek_next_seg = 1; | |
2515 | } | |
2516 | SET_HANDLED (fde, 1); | |
72b016b4 | 2517 | } |
72b016b4 NC |
2518 | if (fde->end_address == NULL) |
2519 | { | |
9e1a8675 AM |
2520 | as_bad (_("open CFI at the end of file; " |
2521 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2522 | fde->end_address = fde->start_address; |
2523 | } | |
2524 | ||
2525 | fde->per_encoding = DW_EH_PE_omit; | |
2526 | fde->lsda_encoding = DW_EH_PE_omit; | |
2527 | cfi_change_reg_numbers (fde->data, ccseg); | |
2528 | cie = select_cie_for_fde (fde, FALSE, &first, alignment); | |
2529 | output_fde (fde, cie, FALSE, first, alignment); | |
2530 | } | |
38462edf | 2531 | } |
67ed7401 | 2532 | while (SUPPORT_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2533 | |
6303c4ae AM |
2534 | if (SUPPORT_FRAME_LINKONCE) |
2535 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2536 | SET_HANDLED (fde, 0); | |
38462edf | 2537 | } |
54cfded0 | 2538 | } |
0a7b15ff JB |
2539 | |
2540 | #else /* TARGET_USE_CFIPOP */ | |
d58a1929 | 2541 | |
5ff2bd08 | 2542 | /* Emit an intelligible error message for missing support. */ |
d58a1929 RH |
2543 | |
2544 | static void | |
2545 | dot_cfi_dummy (int ignored ATTRIBUTE_UNUSED) | |
2546 | { | |
2547 | as_bad (_("CFI is not supported for this target")); | |
2548 | ignore_rest_of_line (); | |
2549 | } | |
2550 | ||
2551 | const pseudo_typeS cfi_pseudo_table[] = | |
2552 | { | |
2553 | { "cfi_sections", dot_cfi_dummy, 0 }, | |
2554 | { "cfi_startproc", dot_cfi_dummy, 0 }, | |
2555 | { "cfi_endproc", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2556 | { "cfi_fde_data", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2557 | { "cfi_def_cfa", dot_cfi_dummy, 0 }, |
2558 | { "cfi_def_cfa_register", dot_cfi_dummy, 0 }, | |
2559 | { "cfi_def_cfa_offset", dot_cfi_dummy, 0 }, | |
2560 | { "cfi_adjust_cfa_offset", dot_cfi_dummy, 0 }, | |
2561 | { "cfi_offset", dot_cfi_dummy, 0 }, | |
2562 | { "cfi_rel_offset", dot_cfi_dummy, 0 }, | |
2563 | { "cfi_register", dot_cfi_dummy, 0 }, | |
2564 | { "cfi_return_column", dot_cfi_dummy, 0 }, | |
2565 | { "cfi_restore", dot_cfi_dummy, 0 }, | |
2566 | { "cfi_undefined", dot_cfi_dummy, 0 }, | |
2567 | { "cfi_same_value", dot_cfi_dummy, 0 }, | |
2568 | { "cfi_remember_state", dot_cfi_dummy, 0 }, | |
2569 | { "cfi_restore_state", dot_cfi_dummy, 0 }, | |
2570 | { "cfi_window_save", dot_cfi_dummy, 0 }, | |
2571 | { "cfi_escape", dot_cfi_dummy, 0 }, | |
2572 | { "cfi_signal_frame", dot_cfi_dummy, 0 }, | |
2573 | { "cfi_personality", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2574 | { "cfi_personality_id", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2575 | { "cfi_lsda", dot_cfi_dummy, 0 }, |
2576 | { "cfi_val_encoded_addr", dot_cfi_dummy, 0 }, | |
73e76108 | 2577 | { "cfi_label", dot_cfi_dummy, 0 }, |
2f0c68f2 | 2578 | { "cfi_inline_lsda", dot_cfi_dummy, 0 }, |
084303b8 | 2579 | { "cfi_val_offset", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2580 | { NULL, NULL, 0 } |
2581 | }; | |
2582 | ||
0a7b15ff JB |
2583 | void |
2584 | cfi_finish (void) | |
2585 | { | |
2586 | } | |
2587 | #endif /* TARGET_USE_CFIPOP */ |