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54cfded0 | 1 | /* dw2gencfi.c - Support for generating Dwarf2 CFI information. |
d87bef3a | 2 | Copyright (C) 2003-2023 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" |
b52c4ee4 | 26 | #include "gen-sframe.h" |
54cfded0 | 27 | |
0a7b15ff | 28 | #ifdef TARGET_USE_CFIPOP |
a4447b93 | 29 | |
3dd24306 DA |
30 | /* By default, use difference expressions if DIFF_EXPR_OK is defined. */ |
31 | #ifndef CFI_DIFF_EXPR_OK | |
32 | # ifdef DIFF_EXPR_OK | |
33 | # define CFI_DIFF_EXPR_OK 1 | |
34 | # else | |
35 | # define CFI_DIFF_EXPR_OK 0 | |
36 | # endif | |
37 | #endif | |
38 | ||
2c678708 | 39 | #ifndef CFI_DIFF_LSDA_OK |
72b016b4 | 40 | #define CFI_DIFF_LSDA_OK CFI_DIFF_EXPR_OK |
2c678708 MK |
41 | #endif |
42 | ||
43 | #if CFI_DIFF_EXPR_OK == 1 && CFI_DIFF_LSDA_OK == 0 | |
44 | # error "CFI_DIFF_EXPR_OK should imply CFI_DIFF_LSDA_OK" | |
45 | #endif | |
46 | ||
a4447b93 RH |
47 | /* We re-use DWARF2_LINE_MIN_INSN_LENGTH for the code alignment field |
48 | of the CIE. Default to 1 if not otherwise specified. */ | |
72b016b4 NC |
49 | #ifndef DWARF2_LINE_MIN_INSN_LENGTH |
50 | #define DWARF2_LINE_MIN_INSN_LENGTH 1 | |
a4447b93 RH |
51 | #endif |
52 | ||
8c9b70b1 RH |
53 | /* By default, use 32-bit relocations from .eh_frame into .text. */ |
54 | #ifndef DWARF2_FDE_RELOC_SIZE | |
72b016b4 | 55 | #define DWARF2_FDE_RELOC_SIZE 4 |
8c9b70b1 RH |
56 | #endif |
57 | ||
58 | /* By default, use a read-only .eh_frame section. */ | |
59 | #ifndef DWARF2_EH_FRAME_READ_ONLY | |
72b016b4 | 60 | #define DWARF2_EH_FRAME_READ_ONLY SEC_READONLY |
8c9b70b1 RH |
61 | #endif |
62 | ||
9393cb0d | 63 | #ifndef EH_FRAME_ALIGNMENT |
72b016b4 | 64 | #define EH_FRAME_ALIGNMENT (bfd_get_arch_size (stdoutput) == 64 ? 3 : 2) |
9393cb0d JJ |
65 | #endif |
66 | ||
a4447b93 | 67 | #ifndef tc_cfi_frame_initial_instructions |
72b016b4 | 68 | #define tc_cfi_frame_initial_instructions() ((void)0) |
a4447b93 RH |
69 | #endif |
70 | ||
1bce6bd8 PB |
71 | #ifndef tc_cfi_startproc |
72 | # define tc_cfi_startproc() ((void)0) | |
73 | #endif | |
74 | ||
75 | #ifndef tc_cfi_endproc | |
6e789b26 | 76 | # define tc_cfi_endproc(fde) ((void) (fde)) |
1bce6bd8 PB |
77 | #endif |
78 | ||
853ba678 J |
79 | #define EH_FRAME_LINKONCE (SUPPORT_FRAME_LINKONCE || compact_eh \ |
80 | || TARGET_MULTIPLE_EH_FRAME_SECTIONS) | |
2f0c68f2 | 81 | |
38462edf | 82 | #ifndef DWARF2_FORMAT |
72b016b4 | 83 | #define DWARF2_FORMAT(SEC) dwarf2_format_32bit |
38462edf JJ |
84 | #endif |
85 | ||
f1c4cc75 | 86 | #ifndef DWARF2_ADDR_SIZE |
72b016b4 | 87 | #define DWARF2_ADDR_SIZE(bfd) (bfd_arch_bits_per_address (bfd) / 8) |
f1c4cc75 RH |
88 | #endif |
89 | ||
2f0c68f2 | 90 | #if MULTIPLE_FRAME_SECTIONS |
6303c4ae | 91 | #define CUR_SEG(structp) structp->cur_seg |
34bca508 | 92 | #define SET_CUR_SEG(structp, seg) structp->cur_seg = seg |
6303c4ae AM |
93 | #define HANDLED(structp) structp->handled |
94 | #define SET_HANDLED(structp, val) structp->handled = val | |
95 | #else | |
96 | #define CUR_SEG(structp) NULL | |
97 | #define SET_CUR_SEG(structp, seg) (void) (0 && seg) | |
98 | #define HANDLED(structp) 0 | |
99 | #define SET_HANDLED(structp, val) (void) (0 && val) | |
100 | #endif | |
101 | ||
2f0c68f2 CM |
102 | #ifndef tc_cfi_reloc_for_encoding |
103 | #define tc_cfi_reloc_for_encoding(e) BFD_RELOC_NONE | |
104 | #endif | |
105 | ||
b52c4ee4 IB |
106 | /* Targets which support SFrame format will define this and return true. */ |
107 | #ifndef support_sframe_p | |
108 | # define support_sframe_p() false | |
109 | #endif | |
110 | ||
72b016b4 NC |
111 | /* Private segment collection list. */ |
112 | struct dwcfi_seg_list | |
113 | { | |
114 | segT seg; | |
115 | int subseg; | |
116 | char * seg_name; | |
117 | }; | |
118 | ||
2f0c68f2 | 119 | #ifdef SUPPORT_COMPACT_EH |
5b7c81bd | 120 | static bool compact_eh; |
2f0c68f2 CM |
121 | #else |
122 | #define compact_eh 0 | |
123 | #endif | |
72b016b4 | 124 | |
494b2fc8 | 125 | static htab_t dwcfi_hash; |
2f0c68f2 CM |
126 | \f |
127 | /* Emit a single byte into the current segment. */ | |
128 | ||
129 | static inline void | |
130 | out_one (int byte) | |
131 | { | |
132 | FRAG_APPEND_1_CHAR (byte); | |
133 | } | |
134 | ||
135 | /* Emit a two-byte word into the current segment. */ | |
136 | ||
137 | static inline void | |
138 | out_two (int data) | |
139 | { | |
140 | md_number_to_chars (frag_more (2), data, 2); | |
141 | } | |
142 | ||
143 | /* Emit a four byte word into the current segment. */ | |
144 | ||
145 | static inline void | |
146 | out_four (int data) | |
147 | { | |
148 | md_number_to_chars (frag_more (4), data, 4); | |
149 | } | |
150 | ||
151 | /* Emit an unsigned "little-endian base 128" number. */ | |
152 | ||
153 | static void | |
154 | out_uleb128 (addressT value) | |
155 | { | |
156 | output_leb128 (frag_more (sizeof_leb128 (value, 0)), value, 0); | |
157 | } | |
158 | ||
159 | /* Emit an unsigned "little-endian base 128" number. */ | |
160 | ||
161 | static void | |
162 | out_sleb128 (offsetT value) | |
163 | { | |
164 | output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1); | |
165 | } | |
166 | ||
ea0de82e | 167 | static unsigned int |
2f0c68f2 CM |
168 | encoding_size (unsigned char encoding) |
169 | { | |
170 | if (encoding == DW_EH_PE_omit) | |
171 | return 0; | |
172 | switch (encoding & 0x7) | |
173 | { | |
174 | case 0: | |
175 | return bfd_get_arch_size (stdoutput) == 64 ? 8 : 4; | |
176 | case DW_EH_PE_udata2: | |
177 | return 2; | |
178 | case DW_EH_PE_udata4: | |
179 | return 4; | |
180 | case DW_EH_PE_udata8: | |
181 | return 8; | |
182 | default: | |
183 | abort (); | |
184 | } | |
185 | } | |
186 | ||
187 | /* Emit expression EXP in ENCODING. If EMIT_ENCODING is true, first | |
188 | emit a byte containing ENCODING. */ | |
189 | ||
190 | static void | |
5b7c81bd | 191 | emit_expr_encoded (expressionS *exp, int encoding, bool emit_encoding) |
2f0c68f2 | 192 | { |
ea0de82e | 193 | unsigned int size = encoding_size (encoding); |
2f0c68f2 CM |
194 | bfd_reloc_code_real_type code; |
195 | ||
196 | if (encoding == DW_EH_PE_omit) | |
197 | return; | |
72b016b4 | 198 | |
2f0c68f2 CM |
199 | if (emit_encoding) |
200 | out_one (encoding); | |
201 | ||
202 | code = tc_cfi_reloc_for_encoding (encoding); | |
203 | if (code != BFD_RELOC_NONE) | |
204 | { | |
205 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
206 | char *p = frag_more (size); | |
86b9fea1 | 207 | gas_assert (size == (unsigned) howto->bitsize / 8); |
2f0c68f2 CM |
208 | md_number_to_chars (p, 0, size); |
209 | fix_new (frag_now, p - frag_now->fr_literal, size, exp->X_add_symbol, | |
210 | exp->X_add_number, howto->pc_relative, code); | |
211 | } | |
212 | else if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
213 | { | |
214 | #if CFI_DIFF_EXPR_OK | |
215 | expressionS tmp = *exp; | |
216 | tmp.X_op = O_subtract; | |
217 | tmp.X_op_symbol = symbol_temp_new_now (); | |
218 | emit_expr (&tmp, size); | |
219 | #elif defined (tc_cfi_emit_pcrel_expr) | |
220 | tc_cfi_emit_pcrel_expr (exp, size); | |
221 | #else | |
222 | abort (); | |
223 | #endif | |
224 | } | |
225 | else | |
226 | emit_expr (exp, size); | |
227 | } | |
228 | \f | |
72b016b4 NC |
229 | /* Build based on segment the derived .debug_... |
230 | segment name containing origin segment's postfix name part. */ | |
231 | ||
232 | static char * | |
233 | get_debugseg_name (segT seg, const char *base_name) | |
234 | { | |
3076e594 NC |
235 | const char * name; |
236 | const char * dollar; | |
237 | const char * dot; | |
72b016b4 | 238 | |
5a210b9f AM |
239 | if (!seg |
240 | || (name = bfd_section_name (seg)) == NULL | |
241 | || *name == 0) | |
242 | return notes_strdup (base_name); | |
3076e594 NC |
243 | |
244 | dollar = strchr (name, '$'); | |
245 | dot = strchr (name + 1, '.'); | |
246 | ||
247 | if (!dollar && !dot) | |
72b016b4 | 248 | { |
3076e594 NC |
249 | if (!strcmp (base_name, ".eh_frame_entry") |
250 | && strcmp (name, ".text") != 0) | |
5a210b9f | 251 | return notes_concat (base_name, ".", name, NULL); |
3076e594 NC |
252 | |
253 | name = ""; | |
72b016b4 | 254 | } |
3076e594 NC |
255 | else if (!dollar) |
256 | name = dot; | |
257 | else if (!dot) | |
258 | name = dollar; | |
259 | else if (dot < dollar) | |
260 | name = dot; | |
261 | else | |
262 | name = dollar; | |
72b016b4 | 263 | |
5a210b9f | 264 | return notes_concat (base_name, name, NULL); |
72b016b4 NC |
265 | } |
266 | ||
267 | /* Allocate a dwcfi_seg_list structure. */ | |
268 | ||
269 | static struct dwcfi_seg_list * | |
270 | alloc_debugseg_item (segT seg, int subseg, char *name) | |
271 | { | |
272 | struct dwcfi_seg_list *r; | |
273 | ||
5a210b9f | 274 | r = notes_alloc (sizeof (*r) + strlen (name)); |
72b016b4 NC |
275 | r->seg = seg; |
276 | r->subseg = subseg; | |
277 | r->seg_name = name; | |
278 | return r; | |
279 | } | |
280 | ||
281 | static segT | |
282 | is_now_linkonce_segment (void) | |
283 | { | |
2f0c68f2 CM |
284 | if (compact_eh) |
285 | return now_seg; | |
286 | ||
853ba678 J |
287 | if (TARGET_MULTIPLE_EH_FRAME_SECTIONS) |
288 | return now_seg; | |
289 | ||
fd361982 | 290 | if ((bfd_section_flags (now_seg) |
72b016b4 NC |
291 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD |
292 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE | |
293 | | SEC_LINK_DUPLICATES_SAME_CONTENTS)) != 0) | |
294 | return now_seg; | |
72b016b4 NC |
295 | return NULL; |
296 | } | |
297 | ||
298 | /* Generate debug... segment with same linkonce properties | |
299 | of based segment. */ | |
300 | ||
301 | static segT | |
302 | make_debug_seg (segT cseg, char *name, int sflags) | |
303 | { | |
304 | segT save_seg = now_seg; | |
305 | int save_subseg = now_subseg; | |
306 | segT r; | |
307 | flagword flags; | |
308 | ||
309 | r = subseg_new (name, 0); | |
310 | ||
311 | /* Check if code segment is marked as linked once. */ | |
312 | if (!cseg) | |
313 | flags = 0; | |
314 | else | |
fd361982 AM |
315 | flags = (bfd_section_flags (cseg) |
316 | & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD | |
317 | | SEC_LINK_DUPLICATES_ONE_ONLY | SEC_LINK_DUPLICATES_SAME_SIZE | |
318 | | SEC_LINK_DUPLICATES_SAME_CONTENTS)); | |
72b016b4 NC |
319 | |
320 | /* Add standard section flags. */ | |
321 | flags |= sflags; | |
322 | ||
323 | /* Apply possibly linked once flags to new generated segment, too. */ | |
fd361982 | 324 | if (!bfd_set_section_flags (r, flags)) |
72b016b4 NC |
325 | as_bad (_("bfd_set_section_flags: %s"), |
326 | bfd_errmsg (bfd_get_error ())); | |
327 | ||
328 | /* Restore to previous segment. */ | |
329 | if (save_seg != NULL) | |
330 | subseg_set (save_seg, save_subseg); | |
331 | return r; | |
332 | } | |
333 | ||
72b016b4 NC |
334 | static struct dwcfi_seg_list * |
335 | dwcfi_hash_find (char *name) | |
336 | { | |
494b2fc8 | 337 | return (struct dwcfi_seg_list *) str_hash_find (dwcfi_hash, name); |
72b016b4 NC |
338 | } |
339 | ||
340 | static struct dwcfi_seg_list * | |
341 | dwcfi_hash_find_or_make (segT cseg, const char *base_name, int flags) | |
342 | { | |
343 | struct dwcfi_seg_list *item; | |
344 | char *name; | |
345 | ||
346 | /* Initialize dwcfi_hash once. */ | |
347 | if (!dwcfi_hash) | |
494b2fc8 | 348 | dwcfi_hash = str_htab_create (); |
72b016b4 NC |
349 | |
350 | name = get_debugseg_name (cseg, base_name); | |
351 | ||
352 | item = dwcfi_hash_find (name); | |
353 | if (!item) | |
354 | { | |
355 | item = alloc_debugseg_item (make_debug_seg (cseg, name, flags), 0, name); | |
356 | ||
fe0e921f | 357 | str_hash_insert (dwcfi_hash, item->seg_name, item, 0); |
72b016b4 NC |
358 | } |
359 | else | |
5a210b9f | 360 | notes_free (name); |
72b016b4 NC |
361 | |
362 | return item; | |
363 | } | |
364 | ||
3251495b RH |
365 | /* ??? Share this with dwarf2cfg.c. */ |
366 | #ifndef TC_DWARF2_EMIT_OFFSET | |
367 | #define TC_DWARF2_EMIT_OFFSET generic_dwarf2_emit_offset | |
368 | ||
369 | /* Create an offset to .dwarf2_*. */ | |
370 | ||
371 | static void | |
372 | generic_dwarf2_emit_offset (symbolS *symbol, unsigned int size) | |
373 | { | |
374 | expressionS exp; | |
375 | ||
376 | exp.X_op = O_symbol; | |
377 | exp.X_add_symbol = symbol; | |
378 | exp.X_add_number = 0; | |
379 | emit_expr (&exp, size); | |
380 | } | |
381 | #endif | |
382 | ||
72b016b4 NC |
383 | struct cfi_escape_data |
384 | { | |
1e9cc1c2 NC |
385 | struct cfi_escape_data *next; |
386 | expressionS exp; | |
387 | }; | |
a4447b93 | 388 | |
a4447b93 | 389 | struct cie_entry |
39b82151 | 390 | { |
a4447b93 | 391 | struct cie_entry *next; |
2f0c68f2 | 392 | #if MULTIPLE_FRAME_SECTIONS |
72b016b4 | 393 | segT cur_seg; |
67ed7401 | 394 | #endif |
a4447b93 RH |
395 | symbolS *start_address; |
396 | unsigned int return_column; | |
63752a75 | 397 | unsigned int signal_frame; |
2f0c68f2 | 398 | unsigned char fde_encoding; |
9b8ae42e JJ |
399 | unsigned char per_encoding; |
400 | unsigned char lsda_encoding; | |
401 | expressionS personality; | |
09038062 ST |
402 | #ifdef tc_cie_entry_extras |
403 | tc_cie_entry_extras | |
404 | #endif | |
a4447b93 | 405 | struct cfi_insn_data *first, *last; |
39b82151 ML |
406 | }; |
407 | ||
a4447b93 | 408 | /* List of FDE entries. */ |
72b016b4 | 409 | |
af385746 | 410 | struct fde_entry *all_fde_data; |
a4447b93 | 411 | static struct fde_entry **last_fde_data = &all_fde_data; |
39b82151 ML |
412 | |
413 | /* List of CIEs so that they could be reused. */ | |
414 | static struct cie_entry *cie_root; | |
415 | ||
a4447b93 | 416 | /* Construct a new FDE structure and add it to the end of the fde list. */ |
54cfded0 | 417 | |
a4447b93 RH |
418 | static struct fde_entry * |
419 | alloc_fde_entry (void) | |
420 | { | |
add39d23 | 421 | struct fde_entry *fde = XCNEW (struct fde_entry); |
54cfded0 | 422 | |
add39d23 | 423 | frchain_now->frch_cfi_data = XCNEW (struct frch_cfi_data); |
ae424f82 | 424 | frchain_now->frch_cfi_data->cur_fde_data = fde; |
a4447b93 RH |
425 | *last_fde_data = fde; |
426 | last_fde_data = &fde->next; | |
6303c4ae AM |
427 | SET_CUR_SEG (fde, is_now_linkonce_segment ()); |
428 | SET_HANDLED (fde, 0); | |
a4447b93 RH |
429 | fde->last = &fde->data; |
430 | fde->return_column = DWARF2_DEFAULT_RETURN_COLUMN; | |
9b8ae42e JJ |
431 | fde->per_encoding = DW_EH_PE_omit; |
432 | fde->lsda_encoding = DW_EH_PE_omit; | |
2f0c68f2 | 433 | fde->eh_header_type = EH_COMPACT_UNKNOWN; |
09038062 ST |
434 | #ifdef tc_fde_entry_init_extra |
435 | tc_fde_entry_init_extra (fde) | |
436 | #endif | |
a4447b93 RH |
437 | |
438 | return fde; | |
439 | } | |
440 | ||
441 | /* The following functions are available for a backend to construct its | |
442 | own unwind information, usually from legacy unwind directives. */ | |
443 | ||
444 | /* Construct a new INSN structure and add it to the end of the insn list | |
445 | for the currently active FDE. */ | |
446 | ||
5b7c81bd | 447 | static bool cfi_sections_set = false; |
2f0c68f2 CM |
448 | static int cfi_sections = CFI_EMIT_eh_frame; |
449 | int all_cfi_sections = 0; | |
450 | static struct fde_entry *last_fde; | |
451 | ||
a4447b93 RH |
452 | static struct cfi_insn_data * |
453 | alloc_cfi_insn_data (void) | |
54cfded0 | 454 | { |
add39d23 | 455 | struct cfi_insn_data *insn = XCNEW (struct cfi_insn_data); |
ae424f82 | 456 | struct fde_entry *cur_fde_data = frchain_now->frch_cfi_data->cur_fde_data; |
a4447b93 RH |
457 | |
458 | *cur_fde_data->last = insn; | |
459 | cur_fde_data->last = &insn->next; | |
6303c4ae | 460 | SET_CUR_SEG (insn, is_now_linkonce_segment ()); |
a4447b93 | 461 | return insn; |
54cfded0 AM |
462 | } |
463 | ||
a4447b93 RH |
464 | /* Construct a new FDE structure that begins at LABEL. */ |
465 | ||
72b016b4 | 466 | void |
a4447b93 | 467 | cfi_new_fde (symbolS *label) |
54cfded0 | 468 | { |
a4447b93 RH |
469 | struct fde_entry *fde = alloc_fde_entry (); |
470 | fde->start_address = label; | |
ae424f82 | 471 | frchain_now->frch_cfi_data->last_address = label; |
54cfded0 AM |
472 | } |
473 | ||
a4447b93 RH |
474 | /* End the currently open FDE. */ |
475 | ||
72b016b4 | 476 | void |
a4447b93 | 477 | cfi_end_fde (symbolS *label) |
54cfded0 | 478 | { |
ae424f82 JJ |
479 | frchain_now->frch_cfi_data->cur_fde_data->end_address = label; |
480 | free (frchain_now->frch_cfi_data); | |
481 | frchain_now->frch_cfi_data = NULL; | |
54cfded0 AM |
482 | } |
483 | ||
a4447b93 RH |
484 | /* Set the return column for the current FDE. */ |
485 | ||
486 | void | |
487 | cfi_set_return_column (unsigned regno) | |
54cfded0 | 488 | { |
ae424f82 | 489 | frchain_now->frch_cfi_data->cur_fde_data->return_column = regno; |
a4447b93 | 490 | } |
54cfded0 | 491 | |
2f0c68f2 CM |
492 | void |
493 | cfi_set_sections (void) | |
494 | { | |
495 | frchain_now->frch_cfi_data->cur_fde_data->sections = all_cfi_sections; | |
5b7c81bd | 496 | cfi_sections_set = true; |
2f0c68f2 CM |
497 | } |
498 | ||
2be24b54 ML |
499 | /* Universal functions to store new instructions. */ |
500 | ||
501 | static void | |
72b016b4 | 502 | cfi_add_CFA_insn (int insn) |
2be24b54 ML |
503 | { |
504 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
505 | ||
506 | insn_ptr->insn = insn; | |
507 | } | |
508 | ||
509 | static void | |
510 | cfi_add_CFA_insn_reg (int insn, unsigned regno) | |
511 | { | |
512 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
513 | ||
514 | insn_ptr->insn = insn; | |
515 | insn_ptr->u.r = regno; | |
516 | } | |
517 | ||
518 | static void | |
519 | cfi_add_CFA_insn_offset (int insn, offsetT offset) | |
520 | { | |
521 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
522 | ||
523 | insn_ptr->insn = insn; | |
524 | insn_ptr->u.i = offset; | |
525 | } | |
526 | ||
527 | static void | |
528 | cfi_add_CFA_insn_reg_reg (int insn, unsigned reg1, unsigned reg2) | |
529 | { | |
530 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
531 | ||
532 | insn_ptr->insn = insn; | |
533 | insn_ptr->u.rr.reg1 = reg1; | |
534 | insn_ptr->u.rr.reg2 = reg2; | |
535 | } | |
536 | ||
537 | static void | |
538 | cfi_add_CFA_insn_reg_offset (int insn, unsigned regno, offsetT offset) | |
539 | { | |
540 | struct cfi_insn_data *insn_ptr = alloc_cfi_insn_data (); | |
541 | ||
542 | insn_ptr->insn = insn; | |
543 | insn_ptr->u.ri.reg = regno; | |
544 | insn_ptr->u.ri.offset = offset; | |
545 | } | |
546 | ||
a4447b93 | 547 | /* Add a CFI insn to advance the PC from the last address to LABEL. */ |
54cfded0 | 548 | |
a4447b93 RH |
549 | void |
550 | cfi_add_advance_loc (symbolS *label) | |
551 | { | |
552 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
7c0295b1 | 553 | |
a4447b93 | 554 | insn->insn = DW_CFA_advance_loc; |
ae424f82 | 555 | insn->u.ll.lab1 = frchain_now->frch_cfi_data->last_address; |
a4447b93 | 556 | insn->u.ll.lab2 = label; |
54cfded0 | 557 | |
ae424f82 | 558 | frchain_now->frch_cfi_data->last_address = label; |
a4447b93 | 559 | } |
54cfded0 | 560 | |
69602580 JB |
561 | /* Add a CFI insn to label the current position in the CFI segment. */ |
562 | ||
563 | void | |
564 | cfi_add_label (const char *name) | |
565 | { | |
566 | unsigned int len = strlen (name) + 1; | |
567 | struct cfi_insn_data *insn = alloc_cfi_insn_data (); | |
568 | ||
569 | insn->insn = CFI_label; | |
570 | obstack_grow (¬es, name, len); | |
571 | insn->u.sym_name = (char *) obstack_finish (¬es); | |
572 | } | |
573 | ||
a4447b93 RH |
574 | /* Add a DW_CFA_offset record to the CFI data. */ |
575 | ||
576 | void | |
577 | cfi_add_CFA_offset (unsigned regno, offsetT offset) | |
578 | { | |
fa87b337 RH |
579 | unsigned int abs_data_align; |
580 | ||
9c2799c2 | 581 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); |
2be24b54 | 582 | cfi_add_CFA_insn_reg_offset (DW_CFA_offset, regno, offset); |
fa87b337 RH |
583 | |
584 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
585 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
586 | if (offset % abs_data_align) | |
587 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
a4447b93 | 588 | } |
54cfded0 | 589 | |
084303b8 AK |
590 | /* Add a DW_CFA_val_offset record to the CFI data. */ |
591 | ||
592 | void | |
593 | cfi_add_CFA_val_offset (unsigned regno, offsetT offset) | |
594 | { | |
595 | unsigned int abs_data_align; | |
596 | ||
597 | gas_assert (DWARF2_CIE_DATA_ALIGNMENT != 0); | |
598 | cfi_add_CFA_insn_reg_offset (DW_CFA_val_offset, regno, offset); | |
599 | ||
600 | abs_data_align = (DWARF2_CIE_DATA_ALIGNMENT < 0 | |
601 | ? -DWARF2_CIE_DATA_ALIGNMENT : DWARF2_CIE_DATA_ALIGNMENT); | |
602 | if (offset % abs_data_align) | |
603 | as_bad (_("register save offset not a multiple of %u"), abs_data_align); | |
604 | } | |
605 | ||
a4447b93 | 606 | /* Add a DW_CFA_def_cfa record to the CFI data. */ |
54cfded0 | 607 | |
a4447b93 RH |
608 | void |
609 | cfi_add_CFA_def_cfa (unsigned regno, offsetT offset) | |
610 | { | |
2be24b54 | 611 | cfi_add_CFA_insn_reg_offset (DW_CFA_def_cfa, regno, offset); |
ae424f82 | 612 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
54cfded0 AM |
613 | } |
614 | ||
a4447b93 RH |
615 | /* Add a DW_CFA_register record to the CFI data. */ |
616 | ||
617 | void | |
618 | cfi_add_CFA_register (unsigned reg1, unsigned reg2) | |
54cfded0 | 619 | { |
2be24b54 | 620 | cfi_add_CFA_insn_reg_reg (DW_CFA_register, reg1, reg2); |
54cfded0 AM |
621 | } |
622 | ||
a4447b93 RH |
623 | /* Add a DW_CFA_def_cfa_register record to the CFI data. */ |
624 | ||
625 | void | |
626 | cfi_add_CFA_def_cfa_register (unsigned regno) | |
54cfded0 | 627 | { |
2be24b54 | 628 | cfi_add_CFA_insn_reg (DW_CFA_def_cfa_register, regno); |
54cfded0 AM |
629 | } |
630 | ||
a4447b93 RH |
631 | /* Add a DW_CFA_def_cfa_offset record to the CFI data. */ |
632 | ||
54cfded0 | 633 | void |
a4447b93 | 634 | cfi_add_CFA_def_cfa_offset (offsetT offset) |
54cfded0 | 635 | { |
2be24b54 | 636 | cfi_add_CFA_insn_offset (DW_CFA_def_cfa_offset, offset); |
ae424f82 | 637 | frchain_now->frch_cfi_data->cur_cfa_offset = offset; |
a4447b93 | 638 | } |
54cfded0 | 639 | |
2be24b54 ML |
640 | void |
641 | cfi_add_CFA_restore (unsigned regno) | |
642 | { | |
643 | cfi_add_CFA_insn_reg (DW_CFA_restore, regno); | |
644 | } | |
645 | ||
646 | void | |
647 | cfi_add_CFA_undefined (unsigned regno) | |
648 | { | |
649 | cfi_add_CFA_insn_reg (DW_CFA_undefined, regno); | |
650 | } | |
651 | ||
652 | void | |
653 | cfi_add_CFA_same_value (unsigned regno) | |
654 | { | |
655 | cfi_add_CFA_insn_reg (DW_CFA_same_value, regno); | |
656 | } | |
657 | ||
658 | void | |
659 | cfi_add_CFA_remember_state (void) | |
660 | { | |
fa87b337 RH |
661 | struct cfa_save_data *p; |
662 | ||
2be24b54 | 663 | cfi_add_CFA_insn (DW_CFA_remember_state); |
fa87b337 | 664 | |
add39d23 | 665 | p = XNEW (struct cfa_save_data); |
ae424f82 JJ |
666 | p->cfa_offset = frchain_now->frch_cfi_data->cur_cfa_offset; |
667 | p->next = frchain_now->frch_cfi_data->cfa_save_stack; | |
668 | frchain_now->frch_cfi_data->cfa_save_stack = p; | |
2be24b54 ML |
669 | } |
670 | ||
671 | void | |
672 | cfi_add_CFA_restore_state (void) | |
673 | { | |
fa87b337 RH |
674 | struct cfa_save_data *p; |
675 | ||
2be24b54 | 676 | cfi_add_CFA_insn (DW_CFA_restore_state); |
fa87b337 | 677 | |
ae424f82 | 678 | p = frchain_now->frch_cfi_data->cfa_save_stack; |
fa87b337 RH |
679 | if (p) |
680 | { | |
ae424f82 JJ |
681 | frchain_now->frch_cfi_data->cur_cfa_offset = p->cfa_offset; |
682 | frchain_now->frch_cfi_data->cfa_save_stack = p->next; | |
fa87b337 RH |
683 | free (p); |
684 | } | |
289040ca NC |
685 | else |
686 | as_bad (_("CFI state restore without previous remember")); | |
2be24b54 ML |
687 | } |
688 | ||
a4447b93 RH |
689 | \f |
690 | /* Parse CFI assembler directives. */ | |
54cfded0 | 691 | |
a4447b93 | 692 | static void dot_cfi (int); |
cdfbf930 | 693 | static void dot_cfi_escape (int); |
38462edf | 694 | static void dot_cfi_sections (int); |
a4447b93 RH |
695 | static void dot_cfi_startproc (int); |
696 | static void dot_cfi_endproc (int); | |
2f0c68f2 | 697 | static void dot_cfi_fde_data (int); |
9b8ae42e | 698 | static void dot_cfi_personality (int); |
2f0c68f2 | 699 | static void dot_cfi_personality_id (int); |
9b8ae42e | 700 | static void dot_cfi_lsda (int); |
f1c4cc75 | 701 | static void dot_cfi_val_encoded_addr (int); |
2f0c68f2 | 702 | static void dot_cfi_inline_lsda (int); |
69602580 | 703 | static void dot_cfi_label (int); |
54cfded0 | 704 | |
a4447b93 RH |
705 | const pseudo_typeS cfi_pseudo_table[] = |
706 | { | |
38462edf | 707 | { "cfi_sections", dot_cfi_sections, 0 }, |
a4447b93 RH |
708 | { "cfi_startproc", dot_cfi_startproc, 0 }, |
709 | { "cfi_endproc", dot_cfi_endproc, 0 }, | |
2f0c68f2 | 710 | { "cfi_fde_data", dot_cfi_fde_data, 0 }, |
a4447b93 RH |
711 | { "cfi_def_cfa", dot_cfi, DW_CFA_def_cfa }, |
712 | { "cfi_def_cfa_register", dot_cfi, DW_CFA_def_cfa_register }, | |
713 | { "cfi_def_cfa_offset", dot_cfi, DW_CFA_def_cfa_offset }, | |
714 | { "cfi_adjust_cfa_offset", dot_cfi, CFI_adjust_cfa_offset }, | |
715 | { "cfi_offset", dot_cfi, DW_CFA_offset }, | |
fa87b337 | 716 | { "cfi_rel_offset", dot_cfi, CFI_rel_offset }, |
a4447b93 | 717 | { "cfi_register", dot_cfi, DW_CFA_register }, |
2be24b54 ML |
718 | { "cfi_return_column", dot_cfi, CFI_return_column }, |
719 | { "cfi_restore", dot_cfi, DW_CFA_restore }, | |
720 | { "cfi_undefined", dot_cfi, DW_CFA_undefined }, | |
721 | { "cfi_same_value", dot_cfi, DW_CFA_same_value }, | |
722 | { "cfi_remember_state", dot_cfi, DW_CFA_remember_state }, | |
723 | { "cfi_restore_state", dot_cfi, DW_CFA_restore_state }, | |
6749011b | 724 | { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save }, |
e8dc9b5b | 725 | { "cfi_negate_ra_state", dot_cfi, DW_CFA_AARCH64_negate_ra_state }, |
cdfbf930 | 726 | { "cfi_escape", dot_cfi_escape, 0 }, |
63752a75 | 727 | { "cfi_signal_frame", dot_cfi, CFI_signal_frame }, |
9b8ae42e | 728 | { "cfi_personality", dot_cfi_personality, 0 }, |
2f0c68f2 | 729 | { "cfi_personality_id", dot_cfi_personality_id, 0 }, |
9b8ae42e | 730 | { "cfi_lsda", dot_cfi_lsda, 0 }, |
f1c4cc75 | 731 | { "cfi_val_encoded_addr", dot_cfi_val_encoded_addr, 0 }, |
2f0c68f2 | 732 | { "cfi_inline_lsda", dot_cfi_inline_lsda, 0 }, |
69602580 | 733 | { "cfi_label", dot_cfi_label, 0 }, |
084303b8 | 734 | { "cfi_val_offset", dot_cfi, DW_CFA_val_offset }, |
a4447b93 RH |
735 | { NULL, NULL, 0 } |
736 | }; | |
54cfded0 AM |
737 | |
738 | static void | |
a4447b93 | 739 | cfi_parse_separator (void) |
54cfded0 | 740 | { |
a4447b93 RH |
741 | SKIP_WHITESPACE (); |
742 | if (*input_line_pointer == ',') | |
743 | input_line_pointer++; | |
744 | else | |
745 | as_bad (_("missing separator")); | |
54cfded0 AM |
746 | } |
747 | ||
a60de03c JB |
748 | #ifndef tc_parse_to_dw2regnum |
749 | static void | |
72b016b4 | 750 | tc_parse_to_dw2regnum (expressionS *exp) |
54cfded0 | 751 | { |
a60de03c | 752 | # ifdef tc_regname_to_dw2regnum |
a4447b93 RH |
753 | SKIP_WHITESPACE (); |
754 | if (is_name_beginner (*input_line_pointer) | |
755 | || (*input_line_pointer == '%' | |
756 | && is_name_beginner (*++input_line_pointer))) | |
757 | { | |
758 | char *name, c; | |
759 | ||
d02603dc | 760 | c = get_symbol_name (& name); |
a4447b93 | 761 | |
a60de03c JB |
762 | exp->X_op = O_constant; |
763 | exp->X_add_number = tc_regname_to_dw2regnum (name); | |
54cfded0 | 764 | |
d02603dc | 765 | restore_line_pointer (c); |
a4447b93 | 766 | } |
a60de03c JB |
767 | else |
768 | # endif | |
769 | expression_and_evaluate (exp); | |
770 | } | |
a4447b93 RH |
771 | #endif |
772 | ||
a60de03c JB |
773 | static unsigned |
774 | cfi_parse_reg (void) | |
775 | { | |
776 | int regno; | |
777 | expressionS exp; | |
778 | ||
779 | tc_parse_to_dw2regnum (&exp); | |
a4447b93 | 780 | switch (exp.X_op) |
54cfded0 | 781 | { |
a4447b93 RH |
782 | case O_register: |
783 | case O_constant: | |
784 | regno = exp.X_add_number; | |
785 | break; | |
786 | ||
787 | default: | |
a60de03c JB |
788 | regno = -1; |
789 | break; | |
790 | } | |
791 | ||
792 | if (regno < 0) | |
793 | { | |
a4447b93 RH |
794 | as_bad (_("bad register expression")); |
795 | regno = 0; | |
54cfded0 AM |
796 | } |
797 | ||
a4447b93 RH |
798 | return regno; |
799 | } | |
800 | ||
801 | static offsetT | |
802 | cfi_parse_const (void) | |
803 | { | |
804 | return get_absolute_expression (); | |
54cfded0 AM |
805 | } |
806 | ||
807 | static void | |
a4447b93 | 808 | dot_cfi (int arg) |
54cfded0 | 809 | { |
a4447b93 RH |
810 | offsetT offset; |
811 | unsigned reg1, reg2; | |
54cfded0 | 812 | |
ae424f82 | 813 | if (frchain_now->frch_cfi_data == NULL) |
54cfded0 AM |
814 | { |
815 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 816 | ignore_rest_of_line (); |
54cfded0 AM |
817 | return; |
818 | } | |
819 | ||
a4447b93 | 820 | /* If the last address was not at the current PC, advance to current. */ |
ae424f82 | 821 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
822 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
823 | != frag_now_fix ())) | |
a4447b93 | 824 | cfi_add_advance_loc (symbol_temp_new_now ()); |
54cfded0 AM |
825 | |
826 | switch (arg) | |
827 | { | |
a4447b93 | 828 | case DW_CFA_offset: |
a4447b93 RH |
829 | reg1 = cfi_parse_reg (); |
830 | cfi_parse_separator (); | |
831 | offset = cfi_parse_const (); | |
2be24b54 ML |
832 | cfi_add_CFA_offset (reg1, offset); |
833 | break; | |
a4447b93 | 834 | |
084303b8 AK |
835 | case DW_CFA_val_offset: |
836 | reg1 = cfi_parse_reg (); | |
837 | cfi_parse_separator (); | |
838 | offset = cfi_parse_const (); | |
839 | cfi_add_CFA_val_offset (reg1, offset); | |
840 | break; | |
841 | ||
fa87b337 RH |
842 | case CFI_rel_offset: |
843 | reg1 = cfi_parse_reg (); | |
844 | cfi_parse_separator (); | |
845 | offset = cfi_parse_const (); | |
ae424f82 JJ |
846 | cfi_add_CFA_offset (reg1, |
847 | offset - frchain_now->frch_cfi_data->cur_cfa_offset); | |
fa87b337 RH |
848 | break; |
849 | ||
2be24b54 ML |
850 | case DW_CFA_def_cfa: |
851 | reg1 = cfi_parse_reg (); | |
852 | cfi_parse_separator (); | |
853 | offset = cfi_parse_const (); | |
854 | cfi_add_CFA_def_cfa (reg1, offset); | |
54cfded0 AM |
855 | break; |
856 | ||
a4447b93 RH |
857 | case DW_CFA_register: |
858 | reg1 = cfi_parse_reg (); | |
859 | cfi_parse_separator (); | |
860 | reg2 = cfi_parse_reg (); | |
a4447b93 | 861 | cfi_add_CFA_register (reg1, reg2); |
39b82151 ML |
862 | break; |
863 | ||
a4447b93 RH |
864 | case DW_CFA_def_cfa_register: |
865 | reg1 = cfi_parse_reg (); | |
866 | cfi_add_CFA_def_cfa_register (reg1); | |
54cfded0 AM |
867 | break; |
868 | ||
a4447b93 RH |
869 | case DW_CFA_def_cfa_offset: |
870 | offset = cfi_parse_const (); | |
871 | cfi_add_CFA_def_cfa_offset (offset); | |
54cfded0 AM |
872 | break; |
873 | ||
54cfded0 | 874 | case CFI_adjust_cfa_offset: |
a4447b93 | 875 | offset = cfi_parse_const (); |
ae424f82 JJ |
876 | cfi_add_CFA_def_cfa_offset (frchain_now->frch_cfi_data->cur_cfa_offset |
877 | + offset); | |
54cfded0 AM |
878 | break; |
879 | ||
2be24b54 | 880 | case DW_CFA_restore: |
b57d375b JB |
881 | for (;;) |
882 | { | |
883 | reg1 = cfi_parse_reg (); | |
884 | cfi_add_CFA_restore (reg1); | |
885 | SKIP_WHITESPACE (); | |
886 | if (*input_line_pointer != ',') | |
887 | break; | |
888 | ++input_line_pointer; | |
889 | } | |
2be24b54 ML |
890 | break; |
891 | ||
892 | case DW_CFA_undefined: | |
b57d375b JB |
893 | for (;;) |
894 | { | |
895 | reg1 = cfi_parse_reg (); | |
896 | cfi_add_CFA_undefined (reg1); | |
897 | SKIP_WHITESPACE (); | |
898 | if (*input_line_pointer != ',') | |
899 | break; | |
900 | ++input_line_pointer; | |
901 | } | |
2be24b54 ML |
902 | break; |
903 | ||
904 | case DW_CFA_same_value: | |
905 | reg1 = cfi_parse_reg (); | |
906 | cfi_add_CFA_same_value (reg1); | |
907 | break; | |
908 | ||
909 | case CFI_return_column: | |
910 | reg1 = cfi_parse_reg (); | |
911 | cfi_set_return_column (reg1); | |
912 | break; | |
913 | ||
914 | case DW_CFA_remember_state: | |
915 | cfi_add_CFA_remember_state (); | |
916 | break; | |
917 | ||
918 | case DW_CFA_restore_state: | |
919 | cfi_add_CFA_restore_state (); | |
920 | break; | |
921 | ||
364b6d8b JJ |
922 | case DW_CFA_GNU_window_save: |
923 | cfi_add_CFA_insn (DW_CFA_GNU_window_save); | |
924 | break; | |
925 | ||
63752a75 | 926 | case CFI_signal_frame: |
ae424f82 | 927 | frchain_now->frch_cfi_data->cur_fde_data->signal_frame = 1; |
63752a75 JJ |
928 | break; |
929 | ||
54cfded0 | 930 | default: |
a4447b93 | 931 | abort (); |
54cfded0 | 932 | } |
54cfded0 | 933 | |
a4447b93 | 934 | demand_empty_rest_of_line (); |
54cfded0 AM |
935 | } |
936 | ||
cdfbf930 RH |
937 | static void |
938 | dot_cfi_escape (int ignored ATTRIBUTE_UNUSED) | |
939 | { | |
940 | struct cfi_escape_data *head, **tail, *e; | |
941 | struct cfi_insn_data *insn; | |
942 | ||
ae424f82 | 943 | if (frchain_now->frch_cfi_data == NULL) |
cdfbf930 RH |
944 | { |
945 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
7c9c8381 | 946 | ignore_rest_of_line (); |
cdfbf930 RH |
947 | return; |
948 | } | |
949 | ||
950 | /* If the last address was not at the current PC, advance to current. */ | |
ae424f82 | 951 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now |
9e1a8675 AM |
952 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
953 | != frag_now_fix ())) | |
cdfbf930 RH |
954 | cfi_add_advance_loc (symbol_temp_new_now ()); |
955 | ||
956 | tail = &head; | |
957 | do | |
958 | { | |
add39d23 | 959 | e = XNEW (struct cfi_escape_data); |
cdfbf930 RH |
960 | do_parse_cons_expression (&e->exp, 1); |
961 | *tail = e; | |
962 | tail = &e->next; | |
963 | } | |
964 | while (*input_line_pointer++ == ','); | |
965 | *tail = NULL; | |
966 | ||
967 | insn = alloc_cfi_insn_data (); | |
968 | insn->insn = CFI_escape; | |
969 | insn->u.esc = head; | |
7c9c8381 JB |
970 | |
971 | --input_line_pointer; | |
972 | demand_empty_rest_of_line (); | |
cdfbf930 RH |
973 | } |
974 | ||
9b8ae42e JJ |
975 | static void |
976 | dot_cfi_personality (int ignored ATTRIBUTE_UNUSED) | |
977 | { | |
978 | struct fde_entry *fde; | |
979 | offsetT encoding; | |
980 | ||
981 | if (frchain_now->frch_cfi_data == NULL) | |
982 | { | |
983 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
984 | ignore_rest_of_line (); | |
985 | return; | |
986 | } | |
987 | ||
988 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 989 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
990 | if (encoding == DW_EH_PE_omit) |
991 | { | |
992 | demand_empty_rest_of_line (); | |
993 | fde->per_encoding = encoding; | |
994 | return; | |
995 | } | |
996 | ||
997 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 998 | || ((((encoding & 0x70) != 0 |
3dd24306 | 999 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
9e1a8675 | 1000 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1001 | #endif |
9e1a8675 AM |
1002 | ) |
1003 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1004 | || (encoding & 7) == DW_EH_PE_uleb128 |
1005 | || (encoding & 7) > DW_EH_PE_udata8) | |
9e1a8675 | 1006 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) |
9b8ae42e JJ |
1007 | { |
1008 | as_bad (_("invalid or unsupported encoding in .cfi_personality")); | |
1009 | ignore_rest_of_line (); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | if (*input_line_pointer++ != ',') | |
1014 | { | |
1015 | as_bad (_(".cfi_personality requires encoding and symbol arguments")); | |
1016 | ignore_rest_of_line (); | |
1017 | return; | |
1018 | } | |
1019 | ||
1020 | expression_and_evaluate (&fde->personality); | |
1021 | switch (fde->personality.X_op) | |
1022 | { | |
1023 | case O_symbol: | |
1024 | break; | |
1025 | case O_constant: | |
1026 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1027 | encoding = DW_EH_PE_omit; | |
1028 | break; | |
1029 | default: | |
1030 | encoding = DW_EH_PE_omit; | |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | fde->per_encoding = encoding; | |
1035 | ||
1036 | if (encoding == DW_EH_PE_omit) | |
1037 | { | |
1038 | as_bad (_("wrong second argument to .cfi_personality")); | |
1039 | ignore_rest_of_line (); | |
1040 | return; | |
1041 | } | |
1042 | ||
1043 | demand_empty_rest_of_line (); | |
1044 | } | |
1045 | ||
1046 | static void | |
1047 | dot_cfi_lsda (int ignored ATTRIBUTE_UNUSED) | |
1048 | { | |
1049 | struct fde_entry *fde; | |
1050 | offsetT encoding; | |
1051 | ||
1052 | if (frchain_now->frch_cfi_data == NULL) | |
1053 | { | |
1054 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1055 | ignore_rest_of_line (); | |
1056 | return; | |
1057 | } | |
1058 | ||
1059 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
f1c4cc75 | 1060 | encoding = cfi_parse_const (); |
9b8ae42e JJ |
1061 | if (encoding == DW_EH_PE_omit) |
1062 | { | |
1063 | demand_empty_rest_of_line (); | |
1064 | fde->lsda_encoding = encoding; | |
1065 | return; | |
1066 | } | |
1067 | ||
1068 | if ((encoding & 0xff) != encoding | |
2f0c68f2 | 1069 | || ((((encoding & 0x70) != 0 |
2c678708 | 1070 | #if CFI_DIFF_LSDA_OK || defined tc_cfi_emit_pcrel_expr |
2f0c68f2 | 1071 | && (encoding & 0x70) != DW_EH_PE_pcrel |
9b8ae42e | 1072 | #endif |
9e1a8675 AM |
1073 | ) |
1074 | /* leb128 can be handled, but does something actually need it? */ | |
2f0c68f2 CM |
1075 | || (encoding & 7) == DW_EH_PE_uleb128 |
1076 | || (encoding & 7) > DW_EH_PE_udata8) | |
1077 | && tc_cfi_reloc_for_encoding (encoding) == BFD_RELOC_NONE)) | |
9b8ae42e JJ |
1078 | { |
1079 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1080 | ignore_rest_of_line (); | |
1081 | return; | |
1082 | } | |
1083 | ||
1084 | if (*input_line_pointer++ != ',') | |
1085 | { | |
1086 | as_bad (_(".cfi_lsda requires encoding and symbol arguments")); | |
1087 | ignore_rest_of_line (); | |
1088 | return; | |
1089 | } | |
1090 | ||
1091 | fde->lsda_encoding = encoding; | |
1092 | ||
1093 | expression_and_evaluate (&fde->lsda); | |
1094 | switch (fde->lsda.X_op) | |
1095 | { | |
1096 | case O_symbol: | |
1097 | break; | |
1098 | case O_constant: | |
1099 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1100 | encoding = DW_EH_PE_omit; | |
1101 | break; | |
1102 | default: | |
1103 | encoding = DW_EH_PE_omit; | |
1104 | break; | |
1105 | } | |
1106 | ||
1107 | fde->lsda_encoding = encoding; | |
1108 | ||
1109 | if (encoding == DW_EH_PE_omit) | |
1110 | { | |
1111 | as_bad (_("wrong second argument to .cfi_lsda")); | |
1112 | ignore_rest_of_line (); | |
1113 | return; | |
1114 | } | |
1115 | ||
1116 | demand_empty_rest_of_line (); | |
1117 | } | |
1118 | ||
f1c4cc75 RH |
1119 | static void |
1120 | dot_cfi_val_encoded_addr (int ignored ATTRIBUTE_UNUSED) | |
1121 | { | |
1122 | struct cfi_insn_data *insn_ptr; | |
1123 | offsetT encoding; | |
1124 | ||
1125 | if (frchain_now->frch_cfi_data == NULL) | |
1126 | { | |
1127 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1128 | ignore_rest_of_line (); | |
1129 | return; | |
1130 | } | |
1131 | ||
1132 | /* If the last address was not at the current PC, advance to current. */ | |
1133 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
9e1a8675 AM |
1134 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1135 | != frag_now_fix ())) | |
f1c4cc75 RH |
1136 | cfi_add_advance_loc (symbol_temp_new_now ()); |
1137 | ||
1138 | insn_ptr = alloc_cfi_insn_data (); | |
1139 | insn_ptr->insn = CFI_val_encoded_addr; | |
72b016b4 | 1140 | |
f1c4cc75 RH |
1141 | insn_ptr->u.ea.reg = cfi_parse_reg (); |
1142 | ||
1143 | cfi_parse_separator (); | |
1144 | encoding = cfi_parse_const (); | |
1145 | if ((encoding & 0xff) != encoding | |
1146 | || ((encoding & 0x70) != 0 | |
1147 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr | |
1148 | && (encoding & 0x70) != DW_EH_PE_pcrel | |
1149 | #endif | |
1150 | ) | |
9e1a8675 | 1151 | /* leb128 can be handled, but does something actually need it? */ |
f1c4cc75 RH |
1152 | || (encoding & 7) == DW_EH_PE_uleb128 |
1153 | || (encoding & 7) > DW_EH_PE_udata8) | |
1154 | { | |
1155 | as_bad (_("invalid or unsupported encoding in .cfi_lsda")); | |
1156 | encoding = DW_EH_PE_omit; | |
1157 | } | |
1158 | ||
1159 | cfi_parse_separator (); | |
1160 | expression_and_evaluate (&insn_ptr->u.ea.exp); | |
1161 | switch (insn_ptr->u.ea.exp.X_op) | |
1162 | { | |
1163 | case O_symbol: | |
1164 | break; | |
1165 | case O_constant: | |
1166 | if ((encoding & 0x70) != DW_EH_PE_pcrel) | |
83e12deb | 1167 | break; |
1a0670f3 | 1168 | /* Fall through. */ |
f1c4cc75 RH |
1169 | default: |
1170 | encoding = DW_EH_PE_omit; | |
1171 | break; | |
1172 | } | |
1173 | ||
1174 | insn_ptr->u.ea.encoding = encoding; | |
1175 | if (encoding == DW_EH_PE_omit) | |
1176 | { | |
1177 | as_bad (_("wrong third argument to .cfi_val_encoded_addr")); | |
1178 | ignore_rest_of_line (); | |
1179 | return; | |
1180 | } | |
1181 | ||
1182 | demand_empty_rest_of_line (); | |
1183 | } | |
1184 | ||
69602580 JB |
1185 | static void |
1186 | dot_cfi_label (int ignored ATTRIBUTE_UNUSED) | |
1187 | { | |
314a80c4 | 1188 | char *name; |
1189 | ||
1190 | if (frchain_now->frch_cfi_data == NULL) | |
1191 | { | |
1192 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1193 | ignore_rest_of_line (); | |
1194 | return; | |
1195 | } | |
69602580 | 1196 | |
314a80c4 | 1197 | name = read_symbol_name (); |
69602580 JB |
1198 | if (name == NULL) |
1199 | return; | |
1200 | ||
1201 | /* If the last address was not at the current PC, advance to current. */ | |
1202 | if (symbol_get_frag (frchain_now->frch_cfi_data->last_address) != frag_now | |
9e1a8675 AM |
1203 | || (S_GET_VALUE (frchain_now->frch_cfi_data->last_address) |
1204 | != frag_now_fix ())) | |
69602580 JB |
1205 | cfi_add_advance_loc (symbol_temp_new_now ()); |
1206 | ||
1207 | cfi_add_label (name); | |
92e18d93 | 1208 | free (name); |
69602580 JB |
1209 | |
1210 | demand_empty_rest_of_line (); | |
1211 | } | |
1212 | ||
38462edf JJ |
1213 | static void |
1214 | dot_cfi_sections (int ignored ATTRIBUTE_UNUSED) | |
1215 | { | |
1216 | int sections = 0; | |
1217 | ||
1218 | SKIP_WHITESPACE (); | |
d02603dc | 1219 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
38462edf JJ |
1220 | while (1) |
1221 | { | |
d02603dc | 1222 | char * saved_ilp; |
38462edf JJ |
1223 | char *name, c; |
1224 | ||
d02603dc NC |
1225 | saved_ilp = input_line_pointer; |
1226 | c = get_symbol_name (& name); | |
38462edf | 1227 | |
d34049e8 | 1228 | if (startswith (name, ".eh_frame") |
72b016b4 | 1229 | && name[9] != '_') |
38462edf | 1230 | sections |= CFI_EMIT_eh_frame; |
d34049e8 | 1231 | else if (startswith (name, ".debug_frame")) |
38462edf | 1232 | sections |= CFI_EMIT_debug_frame; |
2f0c68f2 | 1233 | #if SUPPORT_COMPACT_EH |
d34049e8 | 1234 | else if (startswith (name, ".eh_frame_entry")) |
2f0c68f2 | 1235 | { |
5b7c81bd | 1236 | compact_eh = true; |
2f0c68f2 CM |
1237 | sections |= CFI_EMIT_eh_frame_compact; |
1238 | } | |
1239 | #endif | |
1bce6bd8 PB |
1240 | #ifdef tc_cfi_section_name |
1241 | else if (strcmp (name, tc_cfi_section_name) == 0) | |
1242 | sections |= CFI_EMIT_target; | |
1243 | #endif | |
b52c4ee4 IB |
1244 | else if (startswith (name, ".sframe")) |
1245 | sections |= CFI_EMIT_sframe; | |
38462edf JJ |
1246 | else |
1247 | { | |
1248 | *input_line_pointer = c; | |
d02603dc | 1249 | input_line_pointer = saved_ilp; |
38462edf JJ |
1250 | break; |
1251 | } | |
1252 | ||
1253 | *input_line_pointer = c; | |
d02603dc | 1254 | SKIP_WHITESPACE_AFTER_NAME (); |
38462edf JJ |
1255 | if (*input_line_pointer == ',') |
1256 | { | |
1257 | name = input_line_pointer++; | |
1258 | SKIP_WHITESPACE (); | |
9e1a8675 AM |
1259 | if (!is_name_beginner (*input_line_pointer) |
1260 | && *input_line_pointer != '"') | |
38462edf JJ |
1261 | { |
1262 | input_line_pointer = name; | |
1263 | break; | |
1264 | } | |
1265 | } | |
9e1a8675 AM |
1266 | else if (is_name_beginner (*input_line_pointer) |
1267 | || *input_line_pointer == '"') | |
38462edf JJ |
1268 | break; |
1269 | } | |
1270 | ||
1271 | demand_empty_rest_of_line (); | |
3d3424e9 MF |
1272 | if (cfi_sections_set |
1273 | && (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) | |
9e1a8675 AM |
1274 | && ((cfi_sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)) |
1275 | != (sections & (CFI_EMIT_eh_frame | CFI_EMIT_eh_frame_compact)))) | |
2f0c68f2 | 1276 | as_bad (_("inconsistent uses of .cfi_sections")); |
38462edf JJ |
1277 | cfi_sections = sections; |
1278 | } | |
1279 | ||
54cfded0 | 1280 | static void |
a4447b93 | 1281 | dot_cfi_startproc (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1282 | { |
a4447b93 | 1283 | int simple = 0; |
39b82151 | 1284 | |
ae424f82 | 1285 | if (frchain_now->frch_cfi_data != NULL) |
54cfded0 AM |
1286 | { |
1287 | as_bad (_("previous CFI entry not closed (missing .cfi_endproc)")); | |
7c9c8381 | 1288 | ignore_rest_of_line (); |
54cfded0 AM |
1289 | return; |
1290 | } | |
1291 | ||
a4447b93 | 1292 | cfi_new_fde (symbol_temp_new_now ()); |
39b82151 | 1293 | |
a4447b93 | 1294 | SKIP_WHITESPACE (); |
d02603dc | 1295 | if (is_name_beginner (*input_line_pointer) || *input_line_pointer == '"') |
a4447b93 | 1296 | { |
d02603dc | 1297 | char * saved_ilp = input_line_pointer; |
a4447b93 | 1298 | char *name, c; |
54cfded0 | 1299 | |
d02603dc | 1300 | c = get_symbol_name (& name); |
54cfded0 | 1301 | |
a4447b93 RH |
1302 | if (strcmp (name, "simple") == 0) |
1303 | { | |
1304 | simple = 1; | |
d02603dc | 1305 | restore_line_pointer (c); |
a4447b93 RH |
1306 | } |
1307 | else | |
d02603dc | 1308 | input_line_pointer = saved_ilp; |
a4447b93 RH |
1309 | } |
1310 | demand_empty_rest_of_line (); | |
1311 | ||
5b7c81bd | 1312 | cfi_sections_set = true; |
2f0c68f2 CM |
1313 | all_cfi_sections |= cfi_sections; |
1314 | cfi_set_sections (); | |
ae424f82 | 1315 | frchain_now->frch_cfi_data->cur_cfa_offset = 0; |
a4447b93 | 1316 | if (!simple) |
39b82151 | 1317 | tc_cfi_frame_initial_instructions (); |
1bce6bd8 PB |
1318 | |
1319 | if ((cfi_sections & CFI_EMIT_target) != 0) | |
1320 | tc_cfi_startproc (); | |
54cfded0 AM |
1321 | } |
1322 | ||
a4447b93 RH |
1323 | static void |
1324 | dot_cfi_endproc (int ignored ATTRIBUTE_UNUSED) | |
1325 | { | |
ae424f82 | 1326 | if (frchain_now->frch_cfi_data == NULL) |
a4447b93 RH |
1327 | { |
1328 | as_bad (_(".cfi_endproc without corresponding .cfi_startproc")); | |
7c9c8381 | 1329 | ignore_rest_of_line (); |
a4447b93 RH |
1330 | return; |
1331 | } | |
54cfded0 | 1332 | |
2f0c68f2 | 1333 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; |
1bce6bd8 | 1334 | |
a4447b93 | 1335 | cfi_end_fde (symbol_temp_new_now ()); |
7c9c8381 JB |
1336 | |
1337 | demand_empty_rest_of_line (); | |
1bce6bd8 | 1338 | |
5b7c81bd | 1339 | cfi_sections_set = true; |
1bce6bd8 | 1340 | if ((cfi_sections & CFI_EMIT_target) != 0) |
2f0c68f2 | 1341 | tc_cfi_endproc (last_fde); |
a4447b93 | 1342 | } |
39b82151 | 1343 | |
2f0c68f2 CM |
1344 | static segT |
1345 | get_cfi_seg (segT cseg, const char *base, flagword flags, int align) | |
54cfded0 | 1346 | { |
2f0c68f2 | 1347 | /* Exclude .debug_frame sections for Compact EH. */ |
853ba678 J |
1348 | if (SUPPORT_FRAME_LINKONCE || ((flags & SEC_DEBUGGING) == 0 && compact_eh) |
1349 | || ((flags & SEC_DEBUGGING) == 0 && TARGET_MULTIPLE_EH_FRAME_SECTIONS)) | |
2f0c68f2 | 1350 | { |
853ba678 | 1351 | segT iseg = cseg; |
2f0c68f2 CM |
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); | |
853ba678 J |
1358 | |
1359 | if (TARGET_MULTIPLE_EH_FRAME_SECTIONS | |
1360 | && (flags & DWARF2_EH_FRAME_READ_ONLY)) | |
1361 | { | |
1362 | const frchainS *ifrch = seg_info (iseg)->frchainP; | |
1363 | const frchainS *frch = seg_info (cseg)->frchainP; | |
1364 | expressionS exp; | |
1365 | ||
1366 | exp.X_op = O_symbol; | |
1367 | exp.X_add_symbol = (symbolS *) local_symbol_make (cseg->name, cseg, frch->frch_root, 0); | |
1368 | exp.X_add_number = 0; | |
1369 | subseg_set (iseg, ifrch->frch_subseg); | |
1370 | fix_new_exp (ifrch->frch_root, 0, 0, &exp, 0, BFD_RELOC_NONE); | |
1371 | ||
1372 | /* Restore the original segment info. */ | |
1373 | subseg_set (cseg, l->subseg); | |
1374 | } | |
2f0c68f2 CM |
1375 | } |
1376 | else | |
1377 | { | |
1378 | cseg = subseg_new (base, 0); | |
fd361982 | 1379 | bfd_set_section_flags (cseg, flags); |
2f0c68f2 CM |
1380 | } |
1381 | record_alignment (cseg, align); | |
1382 | return cseg; | |
a4447b93 | 1383 | } |
54cfded0 | 1384 | |
2f0c68f2 CM |
1385 | #if SUPPORT_COMPACT_EH |
1386 | static void | |
1387 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1388 | { | |
1389 | struct fde_entry *fde; | |
54cfded0 | 1390 | |
2f0c68f2 CM |
1391 | if (frchain_now->frch_cfi_data == NULL) |
1392 | { | |
1393 | as_bad (_("CFI instruction used without previous .cfi_startproc")); | |
1394 | ignore_rest_of_line (); | |
1395 | return; | |
1396 | } | |
1397 | ||
1398 | fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1399 | fde->personality_id = cfi_parse_const (); | |
1400 | demand_empty_rest_of_line (); | |
1401 | ||
1402 | if (fde->personality_id == 0 || fde->personality_id > 3) | |
1403 | { | |
1404 | as_bad (_("wrong argument to .cfi_personality_id")); | |
1405 | return; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | static void | |
1410 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) | |
a4447b93 | 1411 | { |
2f0c68f2 CM |
1412 | if (frchain_now->frch_cfi_data == NULL) |
1413 | { | |
1414 | as_bad (_(".cfi_fde_data without corresponding .cfi_startproc")); | |
1415 | ignore_rest_of_line (); | |
1416 | return; | |
1417 | } | |
1418 | ||
1419 | last_fde = frchain_now->frch_cfi_data->cur_fde_data; | |
1420 | ||
5b7c81bd | 1421 | cfi_sections_set = true; |
2f0c68f2 CM |
1422 | if ((cfi_sections & CFI_EMIT_target) != 0 |
1423 | || (cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
1424 | { | |
1425 | struct cfi_escape_data *head, **tail, *e; | |
1426 | int num_ops = 0; | |
1427 | ||
1428 | tail = &head; | |
1429 | if (!is_it_end_of_statement ()) | |
1430 | { | |
1431 | num_ops = 0; | |
1432 | do | |
1433 | { | |
add39d23 | 1434 | e = XNEW (struct cfi_escape_data); |
2f0c68f2 CM |
1435 | do_parse_cons_expression (&e->exp, 1); |
1436 | *tail = e; | |
1437 | tail = &e->next; | |
1438 | num_ops++; | |
1439 | } | |
1440 | while (*input_line_pointer++ == ','); | |
1441 | --input_line_pointer; | |
1442 | } | |
1443 | *tail = NULL; | |
1444 | ||
1445 | if (last_fde->lsda_encoding != DW_EH_PE_omit) | |
1446 | last_fde->eh_header_type = EH_COMPACT_HAS_LSDA; | |
1447 | else if (num_ops <= 3 && last_fde->per_encoding == DW_EH_PE_omit) | |
1448 | last_fde->eh_header_type = EH_COMPACT_INLINE; | |
1449 | else | |
1450 | last_fde->eh_header_type = EH_COMPACT_OUTLINE; | |
1451 | ||
1452 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1453 | num_ops = 3; | |
1454 | ||
1455 | last_fde->eh_data_size = num_ops; | |
add39d23 | 1456 | last_fde->eh_data = XNEWVEC (bfd_byte, num_ops); |
2f0c68f2 CM |
1457 | num_ops = 0; |
1458 | while (head) | |
1459 | { | |
1460 | e = head; | |
1461 | head = e->next; | |
1462 | last_fde->eh_data[num_ops++] = e->exp.X_add_number; | |
1463 | free (e); | |
1464 | } | |
1465 | if (last_fde->eh_header_type == EH_COMPACT_INLINE) | |
1466 | while (num_ops < 3) | |
1467 | last_fde->eh_data[num_ops++] = tc_compact_eh_opcode_stop; | |
1468 | } | |
1469 | ||
1470 | demand_empty_rest_of_line (); | |
a4447b93 | 1471 | } |
54cfded0 | 1472 | |
2f0c68f2 CM |
1473 | /* Function to emit the compact unwinding opcodes stored in the |
1474 | fde's eh_data field. The end of the opcode data will be | |
1475 | padded to the value in align. */ | |
54cfded0 | 1476 | |
2f0c68f2 CM |
1477 | static void |
1478 | output_compact_unwind_data (struct fde_entry *fde, int align) | |
a4447b93 | 1479 | { |
2f0c68f2 CM |
1480 | int data_size = fde->eh_data_size + 2; |
1481 | int align_padding; | |
1482 | int amask; | |
1483 | char *p; | |
1484 | ||
1485 | fde->eh_loc = symbol_temp_new_now (); | |
1486 | ||
1487 | p = frag_more (1); | |
1488 | if (fde->personality_id != 0) | |
1489 | *p = fde->personality_id; | |
1490 | else if (fde->per_encoding != DW_EH_PE_omit) | |
1491 | { | |
1492 | *p = 0; | |
5b7c81bd | 1493 | emit_expr_encoded (&fde->personality, fde->per_encoding, false); |
2f0c68f2 CM |
1494 | data_size += encoding_size (fde->per_encoding); |
1495 | } | |
1496 | else | |
1497 | *p = 1; | |
1498 | ||
1499 | amask = (1 << align) - 1; | |
1500 | align_padding = ((data_size + amask) & ~amask) - data_size; | |
1501 | ||
1502 | p = frag_more (fde->eh_data_size + 1 + align_padding); | |
1503 | memcpy (p, fde->eh_data, fde->eh_data_size); | |
1504 | p += fde->eh_data_size; | |
1505 | ||
1506 | while (align_padding-- > 0) | |
1507 | *(p++) = tc_compact_eh_opcode_pad; | |
1508 | ||
1509 | *(p++) = tc_compact_eh_opcode_stop; | |
1510 | fde->eh_header_type = EH_COMPACT_OUTLINE_DONE; | |
a4447b93 RH |
1511 | } |
1512 | ||
2f0c68f2 CM |
1513 | /* Handle the .cfi_inline_lsda directive. */ |
1514 | static void | |
1515 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) | |
1516 | { | |
1517 | segT ccseg; | |
1518 | int align; | |
1519 | long max_alignment = 28; | |
1520 | ||
1521 | if (!last_fde) | |
1522 | { | |
1523 | as_bad (_("unexpected .cfi_inline_lsda")); | |
1524 | ignore_rest_of_line (); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | if ((last_fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
1529 | { | |
1530 | as_bad (_(".cfi_inline_lsda not valid for this frame")); | |
1531 | ignore_rest_of_line (); | |
1532 | return; | |
1533 | } | |
1534 | ||
1535 | if (last_fde->eh_header_type != EH_COMPACT_UNKNOWN | |
1536 | && last_fde->eh_header_type != EH_COMPACT_HAS_LSDA) | |
1537 | { | |
1538 | as_bad (_(".cfi_inline_lsda seen for frame without .cfi_lsda")); | |
1539 | ignore_rest_of_line (); | |
1540 | return; | |
1541 | } | |
1542 | ||
1543 | #ifdef md_flush_pending_output | |
1544 | md_flush_pending_output (); | |
1545 | #endif | |
1546 | ||
1547 | align = get_absolute_expression (); | |
1548 | if (align > max_alignment) | |
1549 | { | |
1550 | align = max_alignment; | |
1551 | as_bad (_("Alignment too large: %d. assumed."), align); | |
1552 | } | |
1553 | else if (align < 0) | |
1554 | { | |
1555 | as_warn (_("Alignment negative: 0 assumed.")); | |
1556 | align = 0; | |
1557 | } | |
1558 | ||
1559 | demand_empty_rest_of_line (); | |
1560 | ccseg = CUR_SEG (last_fde); | |
54cfded0 | 1561 | |
2f0c68f2 CM |
1562 | /* Open .gnu_extab section. */ |
1563 | get_cfi_seg (ccseg, ".gnu_extab", | |
1564 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
1565 | | DWARF2_EH_FRAME_READ_ONLY), | |
1566 | 1); | |
1567 | ||
1568 | frag_align (align, 0, 0); | |
1569 | record_alignment (now_seg, align); | |
1570 | if (last_fde->eh_header_type == EH_COMPACT_HAS_LSDA) | |
1571 | output_compact_unwind_data (last_fde, align); | |
1572 | ||
1573 | last_fde = NULL; | |
1574 | ||
1575 | return; | |
1576 | } | |
1577 | #else /* !SUPPORT_COMPACT_EH */ | |
a4447b93 | 1578 | static void |
2f0c68f2 | 1579 | dot_cfi_inline_lsda (int ignored ATTRIBUTE_UNUSED) |
a4447b93 | 1580 | { |
2f0c68f2 CM |
1581 | as_bad (_(".cfi_inline_lsda is not supported for this target")); |
1582 | ignore_rest_of_line (); | |
54cfded0 AM |
1583 | } |
1584 | ||
a4447b93 | 1585 | static void |
2f0c68f2 | 1586 | dot_cfi_fde_data (int ignored ATTRIBUTE_UNUSED) |
54cfded0 | 1587 | { |
2f0c68f2 CM |
1588 | as_bad (_(".cfi_fde_data is not supported for this target")); |
1589 | ignore_rest_of_line (); | |
a4447b93 | 1590 | } |
54cfded0 | 1591 | |
2f0c68f2 CM |
1592 | static void |
1593 | dot_cfi_personality_id (int ignored ATTRIBUTE_UNUSED) | |
1594 | { | |
1595 | as_bad (_(".cfi_personality_id is not supported for this target")); | |
1596 | ignore_rest_of_line (); | |
1597 | } | |
1598 | #endif | |
1599 | \f | |
a4447b93 RH |
1600 | static void |
1601 | output_cfi_insn (struct cfi_insn_data *insn) | |
1602 | { | |
1603 | offsetT offset; | |
1604 | unsigned int regno; | |
54cfded0 | 1605 | |
a4447b93 | 1606 | switch (insn->insn) |
54cfded0 | 1607 | { |
a4447b93 RH |
1608 | case DW_CFA_advance_loc: |
1609 | { | |
1610 | symbolS *from = insn->u.ll.lab1; | |
1611 | symbolS *to = insn->u.ll.lab2; | |
1612 | ||
1613 | if (symbol_get_frag (to) == symbol_get_frag (from)) | |
1614 | { | |
1615 | addressT delta = S_GET_VALUE (to) - S_GET_VALUE (from); | |
1616 | addressT scaled = delta / DWARF2_LINE_MIN_INSN_LENGTH; | |
1617 | ||
6f69abb0 AM |
1618 | if (scaled == 0) |
1619 | ; | |
1620 | else if (scaled <= 0x3F) | |
a4447b93 | 1621 | out_one (DW_CFA_advance_loc + scaled); |
395e8345 | 1622 | else if (scaled <= 0xFF) |
a4447b93 | 1623 | { |
9b8ae42e | 1624 | out_one (DW_CFA_advance_loc1); |
395e8345 | 1625 | out_one (scaled); |
a4447b93 | 1626 | } |
395e8345 | 1627 | else if (scaled <= 0xFFFF) |
a4447b93 | 1628 | { |
9b8ae42e | 1629 | out_one (DW_CFA_advance_loc2); |
395e8345 | 1630 | out_two (scaled); |
a4447b93 RH |
1631 | } |
1632 | else | |
1633 | { | |
9b8ae42e | 1634 | out_one (DW_CFA_advance_loc4); |
395e8345 | 1635 | out_four (scaled); |
a4447b93 RH |
1636 | } |
1637 | } | |
1638 | else | |
1639 | { | |
1640 | expressionS exp; | |
1641 | ||
1642 | exp.X_op = O_subtract; | |
1643 | exp.X_add_symbol = to; | |
1644 | exp.X_op_symbol = from; | |
1645 | exp.X_add_number = 0; | |
1646 | ||
1647 | /* The code in ehopt.c expects that one byte of the encoding | |
1648 | is already allocated to the frag. This comes from the way | |
1649 | that it scans the .eh_frame section looking first for the | |
b9d8f560 AM |
1650 | .byte DW_CFA_advance_loc4. Call frag_grow with the sum of |
1651 | room needed by frag_more and frag_var to preallocate space | |
1652 | ensuring that the DW_CFA_advance_loc4 is in the fixed part | |
1653 | of the rs_cfa frag, so that the relax machinery can remove | |
1654 | the advance_loc should it advance by zero. */ | |
1655 | frag_grow (5); | |
1fbfe785 | 1656 | *frag_more (1) = DW_CFA_advance_loc4; |
a4447b93 RH |
1657 | |
1658 | frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3, | |
1659 | make_expr_symbol (&exp), frag_now_fix () - 1, | |
1660 | (char *) frag_now); | |
1661 | } | |
1662 | } | |
1663 | break; | |
1664 | ||
1665 | case DW_CFA_def_cfa: | |
1666 | offset = insn->u.ri.offset; | |
1667 | if (offset < 0) | |
54cfded0 | 1668 | { |
a4447b93 RH |
1669 | out_one (DW_CFA_def_cfa_sf); |
1670 | out_uleb128 (insn->u.ri.reg); | |
dcb45a06 | 1671 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
54cfded0 AM |
1672 | } |
1673 | else | |
1674 | { | |
a4447b93 RH |
1675 | out_one (DW_CFA_def_cfa); |
1676 | out_uleb128 (insn->u.ri.reg); | |
1677 | out_uleb128 (offset); | |
54cfded0 AM |
1678 | } |
1679 | break; | |
1680 | ||
a4447b93 | 1681 | case DW_CFA_def_cfa_register: |
2be24b54 ML |
1682 | case DW_CFA_undefined: |
1683 | case DW_CFA_same_value: | |
1684 | out_one (insn->insn); | |
1685 | out_uleb128 (insn->u.r); | |
54cfded0 AM |
1686 | break; |
1687 | ||
a4447b93 RH |
1688 | case DW_CFA_def_cfa_offset: |
1689 | offset = insn->u.i; | |
1690 | if (offset < 0) | |
1691 | { | |
1692 | out_one (DW_CFA_def_cfa_offset_sf); | |
dcb45a06 | 1693 | out_sleb128 (offset / DWARF2_CIE_DATA_ALIGNMENT); |
a4447b93 RH |
1694 | } |
1695 | else | |
1696 | { | |
1697 | out_one (DW_CFA_def_cfa_offset); | |
1698 | out_uleb128 (offset); | |
1699 | } | |
54cfded0 AM |
1700 | break; |
1701 | ||
2be24b54 ML |
1702 | case DW_CFA_restore: |
1703 | regno = insn->u.r; | |
1704 | if (regno <= 0x3F) | |
1705 | { | |
1706 | out_one (DW_CFA_restore + regno); | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | out_one (DW_CFA_restore_extended); | |
1711 | out_uleb128 (regno); | |
1712 | } | |
1713 | break; | |
1714 | ||
a4447b93 RH |
1715 | case DW_CFA_offset: |
1716 | regno = insn->u.ri.reg; | |
1717 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1718 | if (offset < 0) | |
1719 | { | |
1233ae62 | 1720 | out_one (DW_CFA_offset_extended_sf); |
a4447b93 RH |
1721 | out_uleb128 (regno); |
1722 | out_sleb128 (offset); | |
1723 | } | |
1724 | else if (regno <= 0x3F) | |
1725 | { | |
1726 | out_one (DW_CFA_offset + regno); | |
1727 | out_uleb128 (offset); | |
1728 | } | |
54cfded0 AM |
1729 | else |
1730 | { | |
a4447b93 RH |
1731 | out_one (DW_CFA_offset_extended); |
1732 | out_uleb128 (regno); | |
1733 | out_uleb128 (offset); | |
54cfded0 | 1734 | } |
54cfded0 AM |
1735 | break; |
1736 | ||
084303b8 AK |
1737 | case DW_CFA_val_offset: |
1738 | regno = insn->u.ri.reg; | |
1739 | offset = insn->u.ri.offset / DWARF2_CIE_DATA_ALIGNMENT; | |
1740 | if (offset < 0) | |
1741 | { | |
1742 | out_one (DW_CFA_val_offset_sf); | |
1743 | out_uleb128 (regno); | |
1744 | out_sleb128 (offset); | |
1745 | } | |
1746 | else | |
1747 | { | |
1748 | out_one (DW_CFA_val_offset); | |
1749 | out_uleb128 (regno); | |
1750 | out_uleb128 (offset); | |
1751 | } | |
1752 | break; | |
1753 | ||
a4447b93 RH |
1754 | case DW_CFA_register: |
1755 | out_one (DW_CFA_register); | |
1756 | out_uleb128 (insn->u.rr.reg1); | |
1757 | out_uleb128 (insn->u.rr.reg2); | |
39b82151 ML |
1758 | break; |
1759 | ||
2be24b54 ML |
1760 | case DW_CFA_remember_state: |
1761 | case DW_CFA_restore_state: | |
2be24b54 | 1762 | out_one (insn->insn); |
54cfded0 AM |
1763 | break; |
1764 | ||
364b6d8b JJ |
1765 | case DW_CFA_GNU_window_save: |
1766 | out_one (DW_CFA_GNU_window_save); | |
1767 | break; | |
1768 | ||
cdfbf930 RH |
1769 | case CFI_escape: |
1770 | { | |
1771 | struct cfi_escape_data *e; | |
1772 | for (e = insn->u.esc; e ; e = e->next) | |
1773 | emit_expr (&e->exp, 1); | |
1774 | break; | |
1775 | } | |
1776 | ||
f1c4cc75 RH |
1777 | case CFI_val_encoded_addr: |
1778 | { | |
83e12deb | 1779 | unsigned encoding = insn->u.ea.encoding; |
2f0c68f2 | 1780 | offsetT enc_size; |
f1c4cc75 RH |
1781 | |
1782 | if (encoding == DW_EH_PE_omit) | |
1783 | break; | |
1784 | out_one (DW_CFA_val_expression); | |
1785 | out_uleb128 (insn->u.ea.reg); | |
1786 | ||
83e12deb | 1787 | switch (encoding & 0x7) |
f1c4cc75 RH |
1788 | { |
1789 | case DW_EH_PE_absptr: | |
2f0c68f2 | 1790 | enc_size = DWARF2_ADDR_SIZE (stdoutput); |
f1c4cc75 RH |
1791 | break; |
1792 | case DW_EH_PE_udata2: | |
2f0c68f2 | 1793 | enc_size = 2; |
f1c4cc75 RH |
1794 | break; |
1795 | case DW_EH_PE_udata4: | |
2f0c68f2 | 1796 | enc_size = 4; |
f1c4cc75 RH |
1797 | break; |
1798 | case DW_EH_PE_udata8: | |
2f0c68f2 | 1799 | enc_size = 8; |
f1c4cc75 RH |
1800 | break; |
1801 | default: | |
1802 | abort (); | |
1803 | } | |
1804 | ||
1805 | /* If the user has requested absolute encoding, | |
1806 | then use the smaller DW_OP_addr encoding. */ | |
1807 | if (insn->u.ea.encoding == DW_EH_PE_absptr) | |
1808 | { | |
2f0c68f2 | 1809 | out_uleb128 (1 + enc_size); |
f1c4cc75 RH |
1810 | out_one (DW_OP_addr); |
1811 | } | |
1812 | else | |
1813 | { | |
2f0c68f2 | 1814 | out_uleb128 (1 + 1 + enc_size); |
f1c4cc75 RH |
1815 | out_one (DW_OP_GNU_encoded_addr); |
1816 | out_one (encoding); | |
1817 | ||
1818 | if ((encoding & 0x70) == DW_EH_PE_pcrel) | |
1819 | { | |
1820 | #if CFI_DIFF_EXPR_OK | |
1821 | insn->u.ea.exp.X_op = O_subtract; | |
1822 | insn->u.ea.exp.X_op_symbol = symbol_temp_new_now (); | |
1823 | #elif defined (tc_cfi_emit_pcrel_expr) | |
2f0c68f2 | 1824 | tc_cfi_emit_pcrel_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1825 | break; |
1826 | #else | |
1827 | abort (); | |
1828 | #endif | |
1829 | } | |
1830 | } | |
2f0c68f2 | 1831 | emit_expr (&insn->u.ea.exp, enc_size); |
f1c4cc75 RH |
1832 | } |
1833 | break; | |
72b016b4 | 1834 | |
69602580 JB |
1835 | case CFI_label: |
1836 | colon (insn->u.sym_name); | |
1837 | break; | |
1838 | ||
54cfded0 | 1839 | default: |
a4447b93 | 1840 | abort (); |
54cfded0 | 1841 | } |
54cfded0 AM |
1842 | } |
1843 | ||
1844 | static void | |
5b7c81bd | 1845 | output_cie (struct cie_entry *cie, bool eh_frame, int align) |
54cfded0 | 1846 | { |
a4447b93 | 1847 | symbolS *after_size_address, *end_address; |
7c0295b1 | 1848 | expressionS exp; |
a4447b93 | 1849 | struct cfi_insn_data *i; |
9b8ae42e | 1850 | offsetT augmentation_size; |
8c9b70b1 | 1851 | int enc; |
38462edf | 1852 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
a4447b93 RH |
1853 | |
1854 | cie->start_address = symbol_temp_new_now (); | |
1855 | after_size_address = symbol_temp_make (); | |
1856 | end_address = symbol_temp_make (); | |
1857 | ||
1858 | exp.X_op = O_subtract; | |
1859 | exp.X_add_symbol = end_address; | |
1860 | exp.X_op_symbol = after_size_address; | |
1861 | exp.X_add_number = 0; | |
1862 | ||
38462edf JJ |
1863 | if (eh_frame || fmt == dwarf2_format_32bit) |
1864 | emit_expr (&exp, 4); /* Length. */ | |
1865 | else | |
1866 | { | |
1867 | if (fmt == dwarf2_format_64bit) | |
1868 | out_four (-1); | |
1869 | emit_expr (&exp, 8); /* Length. */ | |
1870 | } | |
a4447b93 | 1871 | symbol_set_value_now (after_size_address); |
38462edf JJ |
1872 | if (eh_frame) |
1873 | out_four (0); /* CIE id. */ | |
1874 | else | |
1875 | { | |
1876 | out_four (-1); /* CIE id. */ | |
1877 | if (fmt != dwarf2_format_32bit) | |
1878 | out_four (-1); | |
1879 | } | |
66f8b2cb | 1880 | out_one (flag_dwarf_cie_version); /* Version. */ |
38462edf JJ |
1881 | if (eh_frame) |
1882 | { | |
1883 | out_one ('z'); /* Augmentation. */ | |
1884 | if (cie->per_encoding != DW_EH_PE_omit) | |
1885 | out_one ('P'); | |
1886 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1887 | out_one ('L'); | |
1888 | out_one ('R'); | |
09038062 | 1889 | #ifdef tc_output_cie_extra |
c6803386 | 1890 | tc_output_cie_extra (cie); |
09038062 | 1891 | #endif |
38462edf | 1892 | } |
d905c788 TS |
1893 | if (cie->signal_frame) |
1894 | out_one ('S'); | |
a4447b93 | 1895 | out_one (0); |
66f8b2cb AB |
1896 | if (flag_dwarf_cie_version >= 4) |
1897 | { | |
1898 | /* For now we are assuming a flat address space with 4 or 8 byte | |
1899 | addresses. */ | |
1900 | int address_size = dwarf2_format_32bit ? 4 : 8; | |
1901 | out_one (address_size); /* Address size. */ | |
1902 | out_one (0); /* Segment size. */ | |
1903 | } | |
289040ca NC |
1904 | out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */ |
1905 | out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */ | |
66f8b2cb | 1906 | if (flag_dwarf_cie_version == 1) /* Return column. */ |
22eb4a06 AB |
1907 | { |
1908 | if ((cie->return_column & 0xff) != cie->return_column) | |
1909 | as_bad (_("return column number %d overflows in CIE version 1"), | |
1910 | cie->return_column); | |
1911 | out_one (cie->return_column); | |
1912 | } | |
0da76f83 NC |
1913 | else |
1914 | out_uleb128 (cie->return_column); | |
38462edf JJ |
1915 | if (eh_frame) |
1916 | { | |
1917 | augmentation_size = 1 + (cie->lsda_encoding != DW_EH_PE_omit); | |
1918 | if (cie->per_encoding != DW_EH_PE_omit) | |
1919 | augmentation_size += 1 + encoding_size (cie->per_encoding); | |
1920 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
4e4e1355 | 1921 | |
5b7c81bd | 1922 | emit_expr_encoded (&cie->personality, cie->per_encoding, true); |
4e4e1355 TS |
1923 | |
1924 | if (cie->lsda_encoding != DW_EH_PE_omit) | |
1925 | out_one (cie->lsda_encoding); | |
9b8ae42e | 1926 | } |
8c9b70b1 RH |
1927 | |
1928 | switch (DWARF2_FDE_RELOC_SIZE) | |
1929 | { | |
1930 | case 2: | |
1931 | enc = DW_EH_PE_sdata2; | |
1932 | break; | |
1933 | case 4: | |
1934 | enc = DW_EH_PE_sdata4; | |
1935 | break; | |
1936 | case 8: | |
1937 | enc = DW_EH_PE_sdata8; | |
1938 | break; | |
1939 | default: | |
1940 | abort (); | |
1941 | } | |
3dd24306 | 1942 | #if CFI_DIFF_EXPR_OK || defined tc_cfi_emit_pcrel_expr |
8c9b70b1 | 1943 | enc |= DW_EH_PE_pcrel; |
364b6d8b | 1944 | #endif |
2f0c68f2 CM |
1945 | #ifdef DWARF2_FDE_RELOC_ENCODING |
1946 | /* Allow target to override encoding. */ | |
1947 | enc = DWARF2_FDE_RELOC_ENCODING (enc); | |
1948 | #endif | |
1949 | cie->fde_encoding = enc; | |
38462edf JJ |
1950 | if (eh_frame) |
1951 | out_one (enc); | |
a4447b93 RH |
1952 | |
1953 | if (cie->first) | |
72b016b4 NC |
1954 | { |
1955 | for (i = cie->first; i != cie->last; i = i->next) | |
83e12deb | 1956 | { |
6303c4ae | 1957 | if (CUR_SEG (i) != CUR_SEG (cie)) |
72b016b4 NC |
1958 | continue; |
1959 | output_cfi_insn (i); | |
1960 | } | |
1961 | } | |
a4447b93 | 1962 | |
38462edf | 1963 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
1964 | symbol_set_value_now (end_address); |
1965 | } | |
54cfded0 | 1966 | |
a4447b93 RH |
1967 | static void |
1968 | output_fde (struct fde_entry *fde, struct cie_entry *cie, | |
5b7c81bd | 1969 | bool eh_frame, struct cfi_insn_data *first, |
38462edf | 1970 | int align) |
a4447b93 RH |
1971 | { |
1972 | symbolS *after_size_address, *end_address; | |
1973 | expressionS exp; | |
9b8ae42e | 1974 | offsetT augmentation_size; |
38462edf | 1975 | enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); |
ea0de82e AM |
1976 | unsigned int offset_size; |
1977 | unsigned int addr_size; | |
54cfded0 | 1978 | |
a4447b93 RH |
1979 | after_size_address = symbol_temp_make (); |
1980 | end_address = symbol_temp_make (); | |
54cfded0 | 1981 | |
a4447b93 RH |
1982 | exp.X_op = O_subtract; |
1983 | exp.X_add_symbol = end_address; | |
1984 | exp.X_op_symbol = after_size_address; | |
1985 | exp.X_add_number = 0; | |
38462edf JJ |
1986 | if (eh_frame || fmt == dwarf2_format_32bit) |
1987 | offset_size = 4; | |
1988 | else | |
1989 | { | |
1990 | if (fmt == dwarf2_format_64bit) | |
1991 | out_four (-1); | |
1992 | offset_size = 8; | |
1993 | } | |
1994 | emit_expr (&exp, offset_size); /* Length. */ | |
a4447b93 | 1995 | symbol_set_value_now (after_size_address); |
54cfded0 | 1996 | |
38462edf JJ |
1997 | if (eh_frame) |
1998 | { | |
3251495b | 1999 | exp.X_op = O_subtract; |
38462edf JJ |
2000 | exp.X_add_symbol = after_size_address; |
2001 | exp.X_op_symbol = cie->start_address; | |
3251495b RH |
2002 | exp.X_add_number = 0; |
2003 | emit_expr (&exp, offset_size); /* CIE offset. */ | |
38462edf JJ |
2004 | } |
2005 | else | |
2006 | { | |
3251495b | 2007 | TC_DWARF2_EMIT_OFFSET (cie->start_address, offset_size); |
38462edf | 2008 | } |
364b6d8b | 2009 | |
2f0c68f2 | 2010 | exp.X_op = O_symbol; |
38462edf JJ |
2011 | if (eh_frame) |
2012 | { | |
2f0c68f2 CM |
2013 | bfd_reloc_code_real_type code |
2014 | = tc_cfi_reloc_for_encoding (cie->fde_encoding); | |
ea0de82e | 2015 | addr_size = DWARF2_FDE_RELOC_SIZE; |
2f0c68f2 CM |
2016 | if (code != BFD_RELOC_NONE) |
2017 | { | |
2018 | reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); | |
ea0de82e | 2019 | char *p = frag_more (addr_size); |
86b9fea1 | 2020 | gas_assert (addr_size == (unsigned) howto->bitsize / 8); |
ea0de82e AM |
2021 | md_number_to_chars (p, 0, addr_size); |
2022 | fix_new (frag_now, p - frag_now->fr_literal, addr_size, | |
2023 | fde->start_address, 0, howto->pc_relative, code); | |
2f0c68f2 CM |
2024 | } |
2025 | else | |
2026 | { | |
2027 | exp.X_op = O_subtract; | |
2028 | exp.X_add_number = 0; | |
3dd24306 | 2029 | #if CFI_DIFF_EXPR_OK |
2f0c68f2 CM |
2030 | exp.X_add_symbol = fde->start_address; |
2031 | exp.X_op_symbol = symbol_temp_new_now (); | |
ea0de82e | 2032 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2033 | #else |
2f0c68f2 CM |
2034 | exp.X_op = O_symbol; |
2035 | exp.X_add_symbol = fde->start_address; | |
2036 | ||
2037 | #if defined(tc_cfi_emit_pcrel_expr) | |
ea0de82e | 2038 | tc_cfi_emit_pcrel_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2039 | #else |
ea0de82e | 2040 | emit_expr (&exp, addr_size); /* Code offset. */ |
364b6d8b | 2041 | #endif |
364b6d8b | 2042 | #endif |
2f0c68f2 | 2043 | } |
38462edf JJ |
2044 | } |
2045 | else | |
2046 | { | |
3251495b | 2047 | exp.X_add_number = 0; |
2f0c68f2 | 2048 | exp.X_add_symbol = fde->start_address; |
38462edf JJ |
2049 | addr_size = DWARF2_ADDR_SIZE (stdoutput); |
2050 | emit_expr (&exp, addr_size); | |
2051 | } | |
54cfded0 | 2052 | |
38462edf | 2053 | exp.X_op = O_subtract; |
a4447b93 | 2054 | exp.X_add_symbol = fde->end_address; |
289040ca | 2055 | exp.X_op_symbol = fde->start_address; /* Code length. */ |
3251495b | 2056 | exp.X_add_number = 0; |
38462edf | 2057 | emit_expr (&exp, addr_size); |
54cfded0 | 2058 | |
9b8ae42e | 2059 | augmentation_size = encoding_size (fde->lsda_encoding); |
38462edf JJ |
2060 | if (eh_frame) |
2061 | out_uleb128 (augmentation_size); /* Augmentation size. */ | |
9b8ae42e | 2062 | |
5b7c81bd | 2063 | emit_expr_encoded (&fde->lsda, cie->lsda_encoding, false); |
39b82151 | 2064 | |
a4447b93 | 2065 | for (; first; first = first->next) |
6303c4ae | 2066 | if (CUR_SEG (first) == CUR_SEG (fde)) |
67ed7401 | 2067 | output_cfi_insn (first); |
39b82151 | 2068 | |
4df6ce47 | 2069 | frag_align (align, DW_CFA_nop, 0); |
a4447b93 RH |
2070 | symbol_set_value_now (end_address); |
2071 | } | |
2072 | ||
d20eb466 AM |
2073 | /* Allow these insns to be put in the initial sequence of a CIE. |
2074 | If J is non-NULL, then compare I and J insns for a match. */ | |
2075 | ||
2076 | static inline bool | |
2077 | initial_cie_insn (const struct cfi_insn_data *i, const struct cfi_insn_data *j) | |
2078 | { | |
2079 | if (j && i->insn != j->insn) | |
2080 | return false; | |
2081 | switch (i->insn) | |
2082 | { | |
2083 | case DW_CFA_offset: | |
2084 | case DW_CFA_def_cfa: | |
2085 | case DW_CFA_val_offset: | |
2086 | if (j) | |
2087 | { | |
2088 | if (i->u.ri.reg != j->u.ri.reg) | |
2089 | return false; | |
2090 | if (i->u.ri.offset != j->u.ri.offset) | |
2091 | return false; | |
2092 | } | |
2093 | break; | |
2094 | ||
2095 | case DW_CFA_register: | |
2096 | if (j) | |
2097 | { | |
2098 | if (i->u.rr.reg1 != j->u.rr.reg1) | |
2099 | return false; | |
2100 | if (i->u.rr.reg2 != j->u.rr.reg2) | |
2101 | return false; | |
2102 | } | |
2103 | break; | |
2104 | ||
2105 | case DW_CFA_def_cfa_register: | |
2106 | case DW_CFA_restore: | |
2107 | case DW_CFA_undefined: | |
2108 | case DW_CFA_same_value: | |
2109 | if (j) | |
2110 | { | |
2111 | if (i->u.r != j->u.r) | |
2112 | return false; | |
2113 | } | |
2114 | break; | |
2115 | ||
2116 | case DW_CFA_def_cfa_offset: | |
2117 | if (j) | |
2118 | { | |
2119 | if (i->u.i != j->u.i) | |
2120 | return false; | |
2121 | } | |
2122 | break; | |
2123 | ||
2124 | default: | |
2125 | return false; | |
2126 | } | |
2127 | return true; | |
2128 | } | |
2129 | ||
a4447b93 | 2130 | static struct cie_entry * |
5b7c81bd | 2131 | select_cie_for_fde (struct fde_entry *fde, bool eh_frame, |
38462edf | 2132 | struct cfi_insn_data **pfirst, int align) |
a4447b93 RH |
2133 | { |
2134 | struct cfi_insn_data *i, *j; | |
2135 | struct cie_entry *cie; | |
2136 | ||
2137 | for (cie = cie_root; cie; cie = cie->next) | |
39b82151 | 2138 | { |
6303c4ae | 2139 | if (CUR_SEG (cie) != CUR_SEG (fde)) |
67ed7401 | 2140 | continue; |
09038062 ST |
2141 | #ifdef tc_cie_fde_equivalent_extra |
2142 | if (!tc_cie_fde_equivalent_extra (cie, fde)) | |
2143 | continue; | |
2144 | #endif | |
67ed7401 | 2145 | if (cie->return_column != fde->return_column |
9b8ae42e JJ |
2146 | || cie->signal_frame != fde->signal_frame |
2147 | || cie->per_encoding != fde->per_encoding | |
2148 | || cie->lsda_encoding != fde->lsda_encoding) | |
a4447b93 | 2149 | continue; |
9b8ae42e JJ |
2150 | if (cie->per_encoding != DW_EH_PE_omit) |
2151 | { | |
2152 | if (cie->personality.X_op != fde->personality.X_op | |
9e1a8675 AM |
2153 | || (cie->personality.X_add_number |
2154 | != fde->personality.X_add_number)) | |
9b8ae42e JJ |
2155 | continue; |
2156 | switch (cie->personality.X_op) | |
2157 | { | |
2158 | case O_constant: | |
2159 | if (cie->personality.X_unsigned != fde->personality.X_unsigned) | |
2160 | continue; | |
2161 | break; | |
2162 | case O_symbol: | |
2163 | if (cie->personality.X_add_symbol | |
2164 | != fde->personality.X_add_symbol) | |
2165 | continue; | |
2166 | break; | |
2167 | default: | |
2168 | abort (); | |
2169 | } | |
2170 | } | |
a4447b93 RH |
2171 | for (i = cie->first, j = fde->data; |
2172 | i != cie->last && j != NULL; | |
2173 | i = i->next, j = j->next) | |
39b82151 | 2174 | { |
d20eb466 AM |
2175 | if (!initial_cie_insn (i, j)) |
2176 | break; | |
39b82151 | 2177 | } |
a4447b93 | 2178 | |
d20eb466 | 2179 | if (i == cie->last) |
39b82151 | 2180 | { |
a4447b93 RH |
2181 | *pfirst = j; |
2182 | return cie; | |
39b82151 | 2183 | } |
54cfded0 AM |
2184 | } |
2185 | ||
add39d23 | 2186 | cie = XNEW (struct cie_entry); |
a4447b93 RH |
2187 | cie->next = cie_root; |
2188 | cie_root = cie; | |
6303c4ae | 2189 | SET_CUR_SEG (cie, CUR_SEG (fde)); |
a4447b93 | 2190 | cie->return_column = fde->return_column; |
63752a75 | 2191 | cie->signal_frame = fde->signal_frame; |
9b8ae42e JJ |
2192 | cie->per_encoding = fde->per_encoding; |
2193 | cie->lsda_encoding = fde->lsda_encoding; | |
2194 | cie->personality = fde->personality; | |
a4447b93 | 2195 | cie->first = fde->data; |
09038062 ST |
2196 | #ifdef tc_cie_entry_init_extra |
2197 | tc_cie_entry_init_extra (cie, fde) | |
2198 | #endif | |
54cfded0 | 2199 | |
a4447b93 | 2200 | for (i = cie->first; i ; i = i->next) |
d20eb466 | 2201 | if (!initial_cie_insn (i, NULL)) |
a4447b93 | 2202 | break; |
54cfded0 | 2203 | |
a4447b93 RH |
2204 | cie->last = i; |
2205 | *pfirst = i; | |
38462edf JJ |
2206 | |
2207 | output_cie (cie, eh_frame, align); | |
54cfded0 | 2208 | |
a4447b93 | 2209 | return cie; |
54cfded0 AM |
2210 | } |
2211 | ||
38462edf JJ |
2212 | #ifdef md_reg_eh_frame_to_debug_frame |
2213 | static void | |
6303c4ae | 2214 | cfi_change_reg_numbers (struct cfi_insn_data *insn, segT ccseg) |
38462edf JJ |
2215 | { |
2216 | for (; insn; insn = insn->next) | |
72b016b4 | 2217 | { |
6303c4ae | 2218 | if (CUR_SEG (insn) != ccseg) |
83e12deb | 2219 | continue; |
72b016b4 NC |
2220 | switch (insn->insn) |
2221 | { | |
2222 | case DW_CFA_advance_loc: | |
2223 | case DW_CFA_def_cfa_offset: | |
2224 | case DW_CFA_remember_state: | |
2225 | case DW_CFA_restore_state: | |
2226 | case DW_CFA_GNU_window_save: | |
2227 | case CFI_escape: | |
73e76108 | 2228 | case CFI_label: |
72b016b4 | 2229 | break; |
38462edf | 2230 | |
72b016b4 NC |
2231 | case DW_CFA_def_cfa: |
2232 | case DW_CFA_offset: | |
2233 | insn->u.ri.reg = md_reg_eh_frame_to_debug_frame (insn->u.ri.reg); | |
2234 | break; | |
38462edf | 2235 | |
72b016b4 NC |
2236 | case DW_CFA_def_cfa_register: |
2237 | case DW_CFA_undefined: | |
2238 | case DW_CFA_same_value: | |
2239 | case DW_CFA_restore: | |
2240 | insn->u.r = md_reg_eh_frame_to_debug_frame (insn->u.r); | |
2241 | break; | |
38462edf | 2242 | |
72b016b4 NC |
2243 | case DW_CFA_register: |
2244 | insn->u.rr.reg1 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg1); | |
2245 | insn->u.rr.reg2 = md_reg_eh_frame_to_debug_frame (insn->u.rr.reg2); | |
2246 | break; | |
38462edf | 2247 | |
72b016b4 NC |
2248 | case CFI_val_encoded_addr: |
2249 | insn->u.ea.reg = md_reg_eh_frame_to_debug_frame (insn->u.ea.reg); | |
2250 | break; | |
38462edf | 2251 | |
72b016b4 NC |
2252 | default: |
2253 | abort (); | |
2254 | } | |
2255 | } | |
38462edf JJ |
2256 | } |
2257 | #else | |
72b016b4 | 2258 | #define cfi_change_reg_numbers(insn, cseg) do { } while (0) |
38462edf JJ |
2259 | #endif |
2260 | ||
2f0c68f2 CM |
2261 | #if SUPPORT_COMPACT_EH |
2262 | static void | |
2263 | cfi_emit_eh_header (symbolS *sym, bfd_vma addend) | |
72b016b4 | 2264 | { |
2f0c68f2 | 2265 | expressionS exp; |
72b016b4 | 2266 | |
2f0c68f2 CM |
2267 | exp.X_add_number = addend; |
2268 | exp.X_add_symbol = sym; | |
5b7c81bd | 2269 | emit_expr_encoded (&exp, DW_EH_PE_sdata4 | DW_EH_PE_pcrel, false); |
2f0c68f2 | 2270 | } |
72b016b4 | 2271 | |
2f0c68f2 CM |
2272 | static void |
2273 | output_eh_header (struct fde_entry *fde) | |
2274 | { | |
2275 | char *p; | |
2276 | bfd_vma addend; | |
2277 | ||
2278 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2279 | addend = 0; | |
2280 | else | |
2281 | addend = 1; | |
2282 | ||
2283 | cfi_emit_eh_header (fde->start_address, addend); | |
2284 | ||
2285 | if (fde->eh_header_type == EH_COMPACT_INLINE) | |
2286 | { | |
2287 | p = frag_more (4); | |
2288 | /* Inline entries always use PR1. */ | |
2289 | *(p++) = 1; | |
2290 | memcpy(p, fde->eh_data, 3); | |
6303c4ae AM |
2291 | } |
2292 | else | |
2293 | { | |
2f0c68f2 CM |
2294 | if (fde->eh_header_type == EH_COMPACT_LEGACY) |
2295 | addend = 1; | |
2296 | else if (fde->eh_header_type == EH_COMPACT_OUTLINE | |
2297 | || fde->eh_header_type == EH_COMPACT_OUTLINE_DONE) | |
2298 | addend = 0; | |
2299 | else | |
2300 | abort (); | |
2301 | cfi_emit_eh_header (fde->eh_loc, addend); | |
6303c4ae | 2302 | } |
72b016b4 | 2303 | } |
2f0c68f2 | 2304 | #endif |
72b016b4 | 2305 | |
54cfded0 | 2306 | void |
a4447b93 | 2307 | cfi_finish (void) |
54cfded0 | 2308 | { |
72b016b4 NC |
2309 | struct cie_entry *cie, *cie_next; |
2310 | segT cfi_seg, ccseg; | |
a4447b93 | 2311 | struct fde_entry *fde; |
72b016b4 NC |
2312 | struct cfi_insn_data *first; |
2313 | int save_flag_traditional_format, seek_next_seg; | |
54cfded0 | 2314 | |
a4447b93 RH |
2315 | if (all_fde_data == 0) |
2316 | return; | |
54cfded0 | 2317 | |
5b7c81bd | 2318 | cfi_sections_set = true; |
2f0c68f2 CM |
2319 | if ((all_cfi_sections & CFI_EMIT_eh_frame) != 0 |
2320 | || (all_cfi_sections & CFI_EMIT_eh_frame_compact) != 0) | |
38462edf | 2321 | { |
38462edf JJ |
2322 | /* Make sure check_eh_frame doesn't do anything with our output. */ |
2323 | save_flag_traditional_format = flag_traditional_format; | |
2324 | flag_traditional_format = 1; | |
eafbc43f | 2325 | |
2f0c68f2 | 2326 | if (!EH_FRAME_LINKONCE) |
6303c4ae AM |
2327 | { |
2328 | /* Open .eh_frame section. */ | |
2329 | cfi_seg = get_cfi_seg (NULL, ".eh_frame", | |
2330 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2331 | | DWARF2_EH_FRAME_READ_ONLY), | |
2332 | EH_FRAME_ALIGNMENT); | |
67ed7401 | 2333 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2334 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2335 | #else |
6303c4ae | 2336 | (void) cfi_seg; |
67ed7401 | 2337 | #endif |
6303c4ae | 2338 | } |
67ed7401 | 2339 | |
72b016b4 | 2340 | do |
83e12deb | 2341 | { |
72b016b4 | 2342 | ccseg = NULL; |
72b016b4 | 2343 | seek_next_seg = 0; |
67ed7401 | 2344 | |
72b016b4 | 2345 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2346 | { |
72b016b4 NC |
2347 | cie_next = cie->next; |
2348 | free ((void *) cie); | |
38462edf | 2349 | } |
72b016b4 | 2350 | cie_root = NULL; |
38462edf | 2351 | |
72b016b4 NC |
2352 | for (fde = all_fde_data; fde ; fde = fde->next) |
2353 | { | |
2f0c68f2 CM |
2354 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 |
2355 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2356 | continue; | |
2357 | ||
2358 | #if SUPPORT_COMPACT_EH | |
2359 | /* Emit a LEGACY format header if we have processed all | |
9e1a8675 | 2360 | of the .cfi directives without encountering either inline or |
2f0c68f2 CM |
2361 | out-of-line compact unwinding opcodes. */ |
2362 | if (fde->eh_header_type == EH_COMPACT_HAS_LSDA | |
2363 | || fde->eh_header_type == EH_COMPACT_UNKNOWN) | |
2364 | fde->eh_header_type = EH_COMPACT_LEGACY; | |
2365 | ||
2366 | if (fde->eh_header_type != EH_COMPACT_LEGACY) | |
2367 | continue; | |
2368 | #endif | |
2369 | if (EH_FRAME_LINKONCE) | |
6303c4ae AM |
2370 | { |
2371 | if (HANDLED (fde)) | |
2372 | continue; | |
2373 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2374 | { | |
2375 | seek_next_seg = 2; | |
2376 | continue; | |
2377 | } | |
2378 | if (!seek_next_seg) | |
2379 | { | |
2380 | ccseg = CUR_SEG (fde); | |
2381 | /* Open .eh_frame section. */ | |
2382 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame", | |
2383 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2384 | | DWARF2_EH_FRAME_READ_ONLY), | |
2385 | EH_FRAME_ALIGNMENT); | |
72b016b4 | 2386 | #ifdef md_fix_up_eh_frame |
6303c4ae | 2387 | md_fix_up_eh_frame (cfi_seg); |
67ed7401 | 2388 | #else |
6303c4ae | 2389 | (void) cfi_seg; |
72b016b4 | 2390 | #endif |
6303c4ae AM |
2391 | seek_next_seg = 1; |
2392 | } | |
2393 | SET_HANDLED (fde, 1); | |
72b016b4 | 2394 | } |
72b016b4 NC |
2395 | |
2396 | if (fde->end_address == NULL) | |
2397 | { | |
9e1a8675 AM |
2398 | as_bad (_("open CFI at the end of file; " |
2399 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2400 | fde->end_address = fde->start_address; |
2401 | } | |
2402 | ||
5b7c81bd | 2403 | cie = select_cie_for_fde (fde, true, &first, 2); |
2f0c68f2 | 2404 | fde->eh_loc = symbol_temp_new_now (); |
5b7c81bd | 2405 | output_fde (fde, cie, true, first, |
72b016b4 NC |
2406 | fde->next == NULL ? EH_FRAME_ALIGNMENT : 2); |
2407 | } | |
38462edf | 2408 | } |
2f0c68f2 | 2409 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2410 | |
2f0c68f2 | 2411 | if (EH_FRAME_LINKONCE) |
6303c4ae AM |
2412 | for (fde = all_fde_data; fde ; fde = fde->next) |
2413 | SET_HANDLED (fde, 0); | |
38462edf | 2414 | |
2f0c68f2 CM |
2415 | #if SUPPORT_COMPACT_EH |
2416 | if (compact_eh) | |
2417 | { | |
2418 | /* Create remaining out of line table entries. */ | |
2419 | do | |
2420 | { | |
2421 | ccseg = NULL; | |
2422 | seek_next_seg = 0; | |
2423 | ||
2424 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2425 | { | |
2426 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2427 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2428 | continue; | |
2429 | ||
2430 | if (fde->eh_header_type != EH_COMPACT_OUTLINE) | |
2431 | continue; | |
2432 | if (HANDLED (fde)) | |
2433 | continue; | |
2434 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2435 | { | |
2436 | seek_next_seg = 2; | |
2437 | continue; | |
2438 | } | |
2439 | if (!seek_next_seg) | |
2440 | { | |
2441 | ccseg = CUR_SEG (fde); | |
2442 | /* Open .gnu_extab section. */ | |
2443 | get_cfi_seg (ccseg, ".gnu_extab", | |
2444 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2445 | | DWARF2_EH_FRAME_READ_ONLY), | |
2446 | 1); | |
2447 | seek_next_seg = 1; | |
2448 | } | |
2449 | SET_HANDLED (fde, 1); | |
2450 | ||
2451 | frag_align (1, 0, 0); | |
2452 | record_alignment (now_seg, 1); | |
2453 | output_compact_unwind_data (fde, 1); | |
2454 | } | |
2455 | } | |
2456 | while (EH_FRAME_LINKONCE && seek_next_seg == 2); | |
2457 | ||
2458 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2459 | SET_HANDLED (fde, 0); | |
2460 | ||
2461 | /* Create index table fragments. */ | |
2462 | do | |
2463 | { | |
2464 | ccseg = NULL; | |
2465 | seek_next_seg = 0; | |
2466 | ||
2467 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2468 | { | |
2469 | if ((fde->sections & CFI_EMIT_eh_frame) == 0 | |
2470 | && (fde->sections & CFI_EMIT_eh_frame_compact) == 0) | |
2471 | continue; | |
2472 | ||
2473 | if (HANDLED (fde)) | |
2474 | continue; | |
2475 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2476 | { | |
2477 | seek_next_seg = 2; | |
2478 | continue; | |
2479 | } | |
2480 | if (!seek_next_seg) | |
2481 | { | |
2482 | ccseg = CUR_SEG (fde); | |
2483 | /* Open .eh_frame_entry section. */ | |
2484 | cfi_seg = get_cfi_seg (ccseg, ".eh_frame_entry", | |
2485 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2486 | | DWARF2_EH_FRAME_READ_ONLY), | |
2487 | 2); | |
2488 | seek_next_seg = 1; | |
2489 | } | |
2490 | SET_HANDLED (fde, 1); | |
2491 | ||
2492 | output_eh_header (fde); | |
2493 | } | |
2494 | } | |
2495 | while (seek_next_seg == 2); | |
2496 | ||
2497 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2498 | SET_HANDLED (fde, 0); | |
2499 | } | |
2500 | #endif /* SUPPORT_COMPACT_EH */ | |
2501 | ||
38462edf JJ |
2502 | flag_traditional_format = save_flag_traditional_format; |
2503 | } | |
2504 | ||
b52c4ee4 IB |
2505 | cfi_sections_set = true; |
2506 | /* Generate SFrame section if the user specifies: | |
2507 | - the command line option to gas, or | |
2508 | - .sframe in the .cfi_sections directive. */ | |
2509 | if (flag_gen_sframe || (all_cfi_sections & CFI_EMIT_sframe) != 0) | |
2510 | { | |
2511 | if (support_sframe_p ()) | |
2512 | { | |
2513 | segT sframe_seg; | |
2514 | int alignment = ffs (DWARF2_ADDR_SIZE (stdoutput)) - 1; | |
2515 | ||
2516 | if (!SUPPORT_FRAME_LINKONCE) | |
2517 | sframe_seg = get_cfi_seg (NULL, ".sframe", | |
2518 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | |
2519 | | DWARF2_EH_FRAME_READ_ONLY), | |
2520 | alignment); | |
2521 | output_sframe (sframe_seg); | |
2522 | } | |
2523 | else | |
2524 | as_bad (_(".sframe not supported for target")); | |
2525 | } | |
2526 | ||
5b7c81bd | 2527 | cfi_sections_set = true; |
2f0c68f2 | 2528 | if ((all_cfi_sections & CFI_EMIT_debug_frame) != 0) |
a4447b93 | 2529 | { |
38462edf | 2530 | int alignment = ffs (DWARF2_ADDR_SIZE (stdoutput)) - 1; |
a4447b93 | 2531 | |
6303c4ae AM |
2532 | if (!SUPPORT_FRAME_LINKONCE) |
2533 | get_cfi_seg (NULL, ".debug_frame", | |
2534 | SEC_READONLY | SEC_DEBUGGING, | |
2535 | alignment); | |
2536 | ||
72b016b4 | 2537 | do |
83e12deb | 2538 | { |
72b016b4 | 2539 | ccseg = NULL; |
72b016b4 | 2540 | seek_next_seg = 0; |
67ed7401 | 2541 | |
72b016b4 | 2542 | for (cie = cie_root; cie; cie = cie_next) |
38462edf | 2543 | { |
72b016b4 NC |
2544 | cie_next = cie->next; |
2545 | free ((void *) cie); | |
38462edf | 2546 | } |
72b016b4 | 2547 | cie_root = NULL; |
38462edf | 2548 | |
72b016b4 NC |
2549 | for (fde = all_fde_data; fde ; fde = fde->next) |
2550 | { | |
2f0c68f2 CM |
2551 | if ((fde->sections & CFI_EMIT_debug_frame) == 0) |
2552 | continue; | |
2553 | ||
6303c4ae AM |
2554 | if (SUPPORT_FRAME_LINKONCE) |
2555 | { | |
2556 | if (HANDLED (fde)) | |
2557 | continue; | |
2558 | if (seek_next_seg && CUR_SEG (fde) != ccseg) | |
2559 | { | |
2560 | seek_next_seg = 2; | |
2561 | continue; | |
2562 | } | |
2563 | if (!seek_next_seg) | |
2564 | { | |
2565 | ccseg = CUR_SEG (fde); | |
2566 | /* Open .debug_frame section. */ | |
2567 | get_cfi_seg (ccseg, ".debug_frame", | |
2568 | SEC_READONLY | SEC_DEBUGGING, | |
2569 | alignment); | |
2570 | seek_next_seg = 1; | |
2571 | } | |
2572 | SET_HANDLED (fde, 1); | |
72b016b4 | 2573 | } |
72b016b4 NC |
2574 | if (fde->end_address == NULL) |
2575 | { | |
9e1a8675 AM |
2576 | as_bad (_("open CFI at the end of file; " |
2577 | "missing .cfi_endproc directive")); | |
72b016b4 NC |
2578 | fde->end_address = fde->start_address; |
2579 | } | |
2580 | ||
2581 | fde->per_encoding = DW_EH_PE_omit; | |
2582 | fde->lsda_encoding = DW_EH_PE_omit; | |
2583 | cfi_change_reg_numbers (fde->data, ccseg); | |
5b7c81bd AM |
2584 | cie = select_cie_for_fde (fde, false, &first, alignment); |
2585 | output_fde (fde, cie, false, first, alignment); | |
72b016b4 | 2586 | } |
38462edf | 2587 | } |
67ed7401 | 2588 | while (SUPPORT_FRAME_LINKONCE && seek_next_seg == 2); |
72b016b4 | 2589 | |
6303c4ae AM |
2590 | if (SUPPORT_FRAME_LINKONCE) |
2591 | for (fde = all_fde_data; fde ; fde = fde->next) | |
2592 | SET_HANDLED (fde, 0); | |
38462edf | 2593 | } |
5a210b9f AM |
2594 | if (dwcfi_hash) |
2595 | htab_delete (dwcfi_hash); | |
54cfded0 | 2596 | } |
0a7b15ff JB |
2597 | |
2598 | #else /* TARGET_USE_CFIPOP */ | |
d58a1929 | 2599 | |
5ff2bd08 | 2600 | /* Emit an intelligible error message for missing support. */ |
d58a1929 RH |
2601 | |
2602 | static void | |
2603 | dot_cfi_dummy (int ignored ATTRIBUTE_UNUSED) | |
2604 | { | |
2605 | as_bad (_("CFI is not supported for this target")); | |
2606 | ignore_rest_of_line (); | |
2607 | } | |
2608 | ||
2609 | const pseudo_typeS cfi_pseudo_table[] = | |
2610 | { | |
2611 | { "cfi_sections", dot_cfi_dummy, 0 }, | |
2612 | { "cfi_startproc", dot_cfi_dummy, 0 }, | |
2613 | { "cfi_endproc", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2614 | { "cfi_fde_data", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2615 | { "cfi_def_cfa", dot_cfi_dummy, 0 }, |
2616 | { "cfi_def_cfa_register", dot_cfi_dummy, 0 }, | |
2617 | { "cfi_def_cfa_offset", dot_cfi_dummy, 0 }, | |
2618 | { "cfi_adjust_cfa_offset", dot_cfi_dummy, 0 }, | |
2619 | { "cfi_offset", dot_cfi_dummy, 0 }, | |
2620 | { "cfi_rel_offset", dot_cfi_dummy, 0 }, | |
2621 | { "cfi_register", dot_cfi_dummy, 0 }, | |
2622 | { "cfi_return_column", dot_cfi_dummy, 0 }, | |
2623 | { "cfi_restore", dot_cfi_dummy, 0 }, | |
2624 | { "cfi_undefined", dot_cfi_dummy, 0 }, | |
2625 | { "cfi_same_value", dot_cfi_dummy, 0 }, | |
2626 | { "cfi_remember_state", dot_cfi_dummy, 0 }, | |
2627 | { "cfi_restore_state", dot_cfi_dummy, 0 }, | |
2628 | { "cfi_window_save", dot_cfi_dummy, 0 }, | |
2629 | { "cfi_escape", dot_cfi_dummy, 0 }, | |
2630 | { "cfi_signal_frame", dot_cfi_dummy, 0 }, | |
2631 | { "cfi_personality", dot_cfi_dummy, 0 }, | |
2f0c68f2 | 2632 | { "cfi_personality_id", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2633 | { "cfi_lsda", dot_cfi_dummy, 0 }, |
2634 | { "cfi_val_encoded_addr", dot_cfi_dummy, 0 }, | |
73e76108 | 2635 | { "cfi_label", dot_cfi_dummy, 0 }, |
2f0c68f2 | 2636 | { "cfi_inline_lsda", dot_cfi_dummy, 0 }, |
084303b8 | 2637 | { "cfi_val_offset", dot_cfi_dummy, 0 }, |
d58a1929 RH |
2638 | { NULL, NULL, 0 } |
2639 | }; | |
2640 | ||
0a7b15ff JB |
2641 | void |
2642 | cfi_finish (void) | |
2643 | { | |
2644 | } | |
2645 | #endif /* TARGET_USE_CFIPOP */ |