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252b5132 | 1 | /* stabs.c -- Parse COFF debugging information |
fd67aa11 | 2 | Copyright (C) 1996-2024 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Ian Lance Taylor <ian@cygnus.com>. |
4 | ||
5 | This file is part of GNU Binutils. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
32866df7 | 9 | the Free Software Foundation; either version 3 of the License, or |
252b5132 RH |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
b43b5d5f NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | /* This file contains code which parses COFF debugging information. */ | |
23 | ||
3db64b00 | 24 | #include "sysdep.h" |
252b5132 RH |
25 | #include "bfd.h" |
26 | #include "coff/internal.h" | |
252b5132 | 27 | #include "libiberty.h" |
3db64b00 | 28 | #include "bucomm.h" |
252b5132 RH |
29 | #include "debug.h" |
30 | #include "budbg.h" | |
31 | ||
32 | /* FIXME: We should not need this BFD internal file. We need it for | |
33 | the N_BTMASK, etc., values. */ | |
34 | #include "libcoff.h" | |
35 | ||
36 | /* These macros extract the right mask and shifts for this BFD. They | |
37 | assume that there is a local variable named ABFD. This is so that | |
38 | macros like ISFCN and DECREF, from coff/internal.h, will work | |
39 | without modification. */ | |
40 | #define N_BTMASK (coff_data (abfd)->local_n_btmask) | |
41 | #define N_BTSHFT (coff_data (abfd)->local_n_btshft) | |
42 | #define N_TMASK (coff_data (abfd)->local_n_tmask) | |
43 | #define N_TSHIFT (coff_data (abfd)->local_n_tshift) | |
44 | ||
45 | /* This structure is used to hold the symbols, as well as the current | |
46 | location within the symbols. */ | |
47 | ||
48 | struct coff_symbols | |
49 | { | |
50 | /* The symbols. */ | |
51 | asymbol **syms; | |
52 | /* The number of symbols. */ | |
53 | long symcount; | |
54 | /* The index of the current symbol. */ | |
55 | long symno; | |
56 | /* The index of the current symbol in the COFF symbol table (where | |
57 | each auxent counts as a symbol). */ | |
58 | long coff_symno; | |
59 | }; | |
60 | ||
945efa5c | 61 | /* This structure is used to map symbol indices to types. */ |
252b5132 | 62 | |
945efa5c | 63 | struct coff_types |
252b5132 RH |
64 | { |
65 | /* Next set of slots. */ | |
945efa5c AM |
66 | struct coff_types *next; |
67 | /* Where the TYPES array starts. */ | |
de357ff4 | 68 | unsigned int base_index; |
252b5132 RH |
69 | /* Slots. */ |
70 | #define COFF_SLOTS (16) | |
945efa5c | 71 | debug_type types[COFF_SLOTS]; |
252b5132 RH |
72 | }; |
73 | ||
252b5132 | 74 | static debug_type parse_coff_base_type |
945efa5c | 75 | (bfd *, struct coff_symbols *, struct coff_types **, long, int, |
2da42df6 | 76 | union internal_auxent *, void *); |
252b5132 | 77 | static debug_type parse_coff_struct_type |
945efa5c | 78 | (bfd *, struct coff_symbols *, struct coff_types **, int, |
2da42df6 | 79 | union internal_auxent *, void *); |
252b5132 | 80 | static debug_type parse_coff_enum_type |
945efa5c | 81 | (bfd *, struct coff_symbols *, struct coff_types **, |
2da42df6 | 82 | union internal_auxent *, void *); |
252b5132 RH |
83 | \f |
84 | /* Return the slot for a type. */ | |
85 | ||
86 | static debug_type * | |
19cacf67 | 87 | coff_get_slot (void *dhandle, struct coff_types **types, long indx) |
252b5132 | 88 | { |
de357ff4 | 89 | unsigned int base_index; |
252b5132 | 90 | |
de357ff4 AM |
91 | base_index = indx / COFF_SLOTS * COFF_SLOTS; |
92 | indx -= base_index; | |
252b5132 | 93 | |
945efa5c AM |
94 | while (*types && (*types)->base_index < base_index) |
95 | types = &(*types)->next; | |
f41e4712 | 96 | |
945efa5c | 97 | if (*types == NULL || (*types)->base_index != base_index) |
252b5132 | 98 | { |
19cacf67 | 99 | struct coff_types *n = debug_xzalloc (dhandle, sizeof (*n)); |
945efa5c | 100 | n->next = *types; |
de357ff4 | 101 | n->base_index = base_index; |
945efa5c | 102 | *types = n; |
252b5132 RH |
103 | } |
104 | ||
945efa5c | 105 | return (*types)->types + indx; |
252b5132 RH |
106 | } |
107 | ||
108 | /* Parse a COFF type code in NTYPE. */ | |
109 | ||
110 | static debug_type | |
2da42df6 | 111 | parse_coff_type (bfd *abfd, struct coff_symbols *symbols, |
945efa5c | 112 | struct coff_types **types, long coff_symno, int ntype, |
015dc7e1 | 113 | union internal_auxent *pauxent, bool useaux, |
2da42df6 | 114 | void *dhandle) |
252b5132 RH |
115 | { |
116 | debug_type type; | |
117 | ||
118 | if ((ntype & ~N_BTMASK) != 0) | |
119 | { | |
120 | int newtype; | |
121 | ||
122 | newtype = DECREF (ntype); | |
123 | ||
124 | if (ISPTR (ntype)) | |
125 | { | |
126 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, | |
127 | pauxent, useaux, dhandle); | |
128 | type = debug_make_pointer_type (dhandle, type); | |
129 | } | |
130 | else if (ISFCN (ntype)) | |
131 | { | |
132 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, | |
133 | pauxent, useaux, dhandle); | |
134 | type = debug_make_function_type (dhandle, type, (debug_type *) NULL, | |
015dc7e1 | 135 | false); |
252b5132 RH |
136 | } |
137 | else if (ISARY (ntype)) | |
138 | { | |
139 | int n; | |
140 | ||
141 | if (pauxent == NULL) | |
142 | n = 0; | |
143 | else | |
144 | { | |
145 | unsigned short *dim; | |
146 | int i; | |
147 | ||
148 | /* FIXME: If pauxent->x_sym.x_tagndx.l == 0, gdb sets | |
149 | the c_naux field of the syment to 0. */ | |
150 | ||
151 | /* Move the dimensions down, so that the next array | |
152 | picks up the next one. */ | |
153 | dim = pauxent->x_sym.x_fcnary.x_ary.x_dimen; | |
154 | n = dim[0]; | |
155 | for (i = 0; *dim != 0 && i < DIMNUM - 1; i++, dim++) | |
156 | *dim = *(dim + 1); | |
157 | *dim = 0; | |
158 | } | |
159 | ||
160 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, | |
015dc7e1 | 161 | pauxent, false, dhandle); |
252b5132 RH |
162 | type = debug_make_array_type (dhandle, type, |
163 | parse_coff_base_type (abfd, symbols, | |
164 | types, | |
165 | coff_symno, | |
166 | T_INT, | |
167 | NULL, dhandle), | |
015dc7e1 | 168 | 0, n - 1, false); |
252b5132 RH |
169 | } |
170 | else | |
171 | { | |
37cc8ec1 | 172 | non_fatal (_("parse_coff_type: Bad type code 0x%x"), ntype); |
252b5132 RH |
173 | return DEBUG_TYPE_NULL; |
174 | } | |
175 | ||
176 | return type; | |
177 | } | |
178 | ||
a2c7ca15 | 179 | if (pauxent != NULL && (int32_t) pauxent->x_sym.x_tagndx.u32 > 0) |
252b5132 RH |
180 | { |
181 | debug_type *slot; | |
182 | ||
183 | /* This is a reference to an existing type. FIXME: gdb checks | |
184 | that the class is not C_STRTAG, nor C_UNTAG, nor C_ENTAG. */ | |
19cacf67 | 185 | slot = coff_get_slot (dhandle, types, pauxent->x_sym.x_tagndx.u32); |
252b5132 RH |
186 | if (*slot != DEBUG_TYPE_NULL) |
187 | return *slot; | |
188 | else | |
189 | return debug_make_indirect_type (dhandle, slot, (const char *) NULL); | |
190 | } | |
191 | ||
192 | /* If the aux entry has already been used for something, useaux will | |
193 | have been set to false, indicating that parse_coff_base_type | |
194 | should not use it. We need to do it this way, rather than simply | |
195 | passing pauxent as NULL, because we need to be able handle | |
196 | multiple array dimensions while still discarding pauxent after | |
197 | having handled all of them. */ | |
198 | if (! useaux) | |
199 | pauxent = NULL; | |
200 | ||
201 | return parse_coff_base_type (abfd, symbols, types, coff_symno, ntype, | |
202 | pauxent, dhandle); | |
203 | } | |
204 | ||
205 | /* Parse a basic COFF type in NTYPE. */ | |
206 | ||
207 | static debug_type | |
2da42df6 | 208 | parse_coff_base_type (bfd *abfd, struct coff_symbols *symbols, |
945efa5c | 209 | struct coff_types **types, long coff_symno, int ntype, |
2da42df6 | 210 | union internal_auxent *pauxent, void *dhandle) |
252b5132 RH |
211 | { |
212 | debug_type ret; | |
945efa5c | 213 | const char *name = NULL; |
252b5132 RH |
214 | |
215 | switch (ntype) | |
216 | { | |
217 | default: | |
218 | ret = debug_make_void_type (dhandle); | |
219 | break; | |
220 | ||
221 | case T_NULL: | |
222 | case T_VOID: | |
223 | ret = debug_make_void_type (dhandle); | |
224 | name = "void"; | |
225 | break; | |
226 | ||
227 | case T_CHAR: | |
015dc7e1 | 228 | ret = debug_make_int_type (dhandle, 1, false); |
252b5132 RH |
229 | name = "char"; |
230 | break; | |
231 | ||
232 | case T_SHORT: | |
015dc7e1 | 233 | ret = debug_make_int_type (dhandle, 2, false); |
252b5132 RH |
234 | name = "short"; |
235 | break; | |
236 | ||
237 | case T_INT: | |
238 | /* FIXME: Perhaps the size should depend upon the architecture. */ | |
015dc7e1 | 239 | ret = debug_make_int_type (dhandle, 4, false); |
252b5132 RH |
240 | name = "int"; |
241 | break; | |
242 | ||
243 | case T_LONG: | |
015dc7e1 | 244 | ret = debug_make_int_type (dhandle, 4, false); |
252b5132 RH |
245 | name = "long"; |
246 | break; | |
247 | ||
248 | case T_FLOAT: | |
249 | ret = debug_make_float_type (dhandle, 4); | |
250 | name = "float"; | |
251 | break; | |
252 | ||
253 | case T_DOUBLE: | |
254 | ret = debug_make_float_type (dhandle, 8); | |
255 | name = "double"; | |
256 | break; | |
257 | ||
258 | case T_LNGDBL: | |
259 | ret = debug_make_float_type (dhandle, 12); | |
260 | name = "long double"; | |
261 | break; | |
262 | ||
263 | case T_UCHAR: | |
015dc7e1 | 264 | ret = debug_make_int_type (dhandle, 1, true); |
252b5132 RH |
265 | name = "unsigned char"; |
266 | break; | |
267 | ||
268 | case T_USHORT: | |
015dc7e1 | 269 | ret = debug_make_int_type (dhandle, 2, true); |
252b5132 RH |
270 | name = "unsigned short"; |
271 | break; | |
272 | ||
273 | case T_UINT: | |
015dc7e1 | 274 | ret = debug_make_int_type (dhandle, 4, true); |
252b5132 RH |
275 | name = "unsigned int"; |
276 | break; | |
277 | ||
278 | case T_ULONG: | |
015dc7e1 | 279 | ret = debug_make_int_type (dhandle, 4, true); |
252b5132 RH |
280 | name = "unsigned long"; |
281 | break; | |
282 | ||
283 | case T_STRUCT: | |
284 | if (pauxent == NULL) | |
015dc7e1 | 285 | ret = debug_make_struct_type (dhandle, true, 0, |
252b5132 RH |
286 | (debug_field *) NULL); |
287 | else | |
288 | ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent, | |
289 | dhandle); | |
252b5132 RH |
290 | break; |
291 | ||
292 | case T_UNION: | |
293 | if (pauxent == NULL) | |
015dc7e1 | 294 | ret = debug_make_struct_type (dhandle, false, 0, (debug_field *) NULL); |
252b5132 RH |
295 | else |
296 | ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent, | |
297 | dhandle); | |
252b5132 RH |
298 | break; |
299 | ||
300 | case T_ENUM: | |
301 | if (pauxent == NULL) | |
302 | ret = debug_make_enum_type (dhandle, (const char **) NULL, | |
303 | (bfd_signed_vma *) NULL); | |
304 | else | |
305 | ret = parse_coff_enum_type (abfd, symbols, types, pauxent, dhandle); | |
252b5132 RH |
306 | break; |
307 | } | |
308 | ||
309 | if (name != NULL) | |
310 | ret = debug_name_type (dhandle, name, ret); | |
311 | ||
19cacf67 | 312 | debug_type *slot = coff_get_slot (dhandle, types, coff_symno); |
945efa5c | 313 | *slot = ret; |
252b5132 RH |
314 | |
315 | return ret; | |
316 | } | |
317 | ||
318 | /* Parse a struct type. */ | |
319 | ||
320 | static debug_type | |
2da42df6 | 321 | parse_coff_struct_type (bfd *abfd, struct coff_symbols *symbols, |
945efa5c | 322 | struct coff_types **types, int ntype, |
2da42df6 | 323 | union internal_auxent *pauxent, void *dhandle) |
252b5132 RH |
324 | { |
325 | long symend; | |
326 | int alloc; | |
19cacf67 | 327 | debug_field *fields, *xfields; |
252b5132 | 328 | int count; |
015dc7e1 | 329 | bool done; |
252b5132 | 330 | |
a2c7ca15 | 331 | symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.u32; |
252b5132 RH |
332 | |
333 | alloc = 10; | |
334 | fields = (debug_field *) xmalloc (alloc * sizeof *fields); | |
335 | count = 0; | |
336 | ||
015dc7e1 | 337 | done = false; |
252b5132 RH |
338 | while (! done |
339 | && symbols->coff_symno < symend | |
340 | && symbols->symno < symbols->symcount) | |
341 | { | |
342 | asymbol *sym; | |
343 | long this_coff_symno; | |
344 | struct internal_syment syment; | |
345 | union internal_auxent auxent; | |
346 | union internal_auxent *psubaux; | |
347 | bfd_vma bitpos = 0, bitsize = 0; | |
348 | ||
349 | sym = symbols->syms[symbols->symno]; | |
350 | ||
351 | if (! bfd_coff_get_syment (abfd, sym, &syment)) | |
352 | { | |
37cc8ec1 AM |
353 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
354 | bfd_errmsg (bfd_get_error ())); | |
e3d39609 | 355 | free (fields); |
252b5132 RH |
356 | return DEBUG_TYPE_NULL; |
357 | } | |
358 | ||
359 | this_coff_symno = symbols->coff_symno; | |
360 | ||
361 | ++symbols->symno; | |
362 | symbols->coff_symno += 1 + syment.n_numaux; | |
363 | ||
364 | if (syment.n_numaux == 0) | |
365 | psubaux = NULL; | |
366 | else | |
367 | { | |
368 | if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent)) | |
369 | { | |
37cc8ec1 AM |
370 | non_fatal (_("bfd_coff_get_auxent failed: %s"), |
371 | bfd_errmsg (bfd_get_error ())); | |
e3d39609 | 372 | free (fields); |
252b5132 RH |
373 | return DEBUG_TYPE_NULL; |
374 | } | |
375 | psubaux = &auxent; | |
376 | } | |
377 | ||
378 | switch (syment.n_sclass) | |
379 | { | |
380 | case C_MOS: | |
381 | case C_MOU: | |
382 | bitpos = 8 * bfd_asymbol_value (sym); | |
383 | bitsize = 0; | |
384 | break; | |
385 | ||
386 | case C_FIELD: | |
387 | bitpos = bfd_asymbol_value (sym); | |
341eba4f AM |
388 | if (psubaux != NULL) |
389 | bitsize = psubaux->x_sym.x_misc.x_lnsz.x_size; | |
252b5132 RH |
390 | break; |
391 | ||
392 | case C_EOS: | |
015dc7e1 | 393 | done = true; |
252b5132 RH |
394 | break; |
395 | } | |
396 | ||
397 | if (! done) | |
398 | { | |
399 | debug_type ftype; | |
400 | debug_field f; | |
401 | ||
402 | ftype = parse_coff_type (abfd, symbols, types, this_coff_symno, | |
015dc7e1 | 403 | syment.n_type, psubaux, true, dhandle); |
252b5132 RH |
404 | f = debug_make_field (dhandle, bfd_asymbol_name (sym), ftype, |
405 | bitpos, bitsize, DEBUG_VISIBILITY_PUBLIC); | |
406 | if (f == DEBUG_FIELD_NULL) | |
19cacf67 AM |
407 | { |
408 | free (fields); | |
409 | return DEBUG_TYPE_NULL; | |
410 | } | |
252b5132 RH |
411 | |
412 | if (count + 1 >= alloc) | |
413 | { | |
414 | alloc += 10; | |
415 | fields = ((debug_field *) | |
416 | xrealloc (fields, alloc * sizeof *fields)); | |
417 | } | |
418 | ||
419 | fields[count] = f; | |
420 | ++count; | |
421 | } | |
422 | } | |
423 | ||
424 | fields[count] = DEBUG_FIELD_NULL; | |
19cacf67 AM |
425 | xfields = debug_xalloc (dhandle, (count + 1) * sizeof (*fields)); |
426 | memcpy (xfields, fields, (count + 1) * sizeof (*fields)); | |
427 | free (fields); | |
252b5132 RH |
428 | |
429 | return debug_make_struct_type (dhandle, ntype == T_STRUCT, | |
430 | pauxent->x_sym.x_misc.x_lnsz.x_size, | |
19cacf67 | 431 | xfields); |
252b5132 RH |
432 | } |
433 | ||
434 | /* Parse an enum type. */ | |
435 | ||
436 | static debug_type | |
2da42df6 | 437 | parse_coff_enum_type (bfd *abfd, struct coff_symbols *symbols, |
945efa5c | 438 | struct coff_types **types ATTRIBUTE_UNUSED, |
2da42df6 | 439 | union internal_auxent *pauxent, void *dhandle) |
252b5132 RH |
440 | { |
441 | long symend; | |
442 | int alloc; | |
19cacf67 AM |
443 | const char **names, **xnames; |
444 | bfd_signed_vma *vals, *xvals; | |
252b5132 | 445 | int count; |
015dc7e1 | 446 | bool done; |
252b5132 | 447 | |
a2c7ca15 | 448 | symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.u32; |
252b5132 RH |
449 | |
450 | alloc = 10; | |
451 | names = (const char **) xmalloc (alloc * sizeof *names); | |
452 | vals = (bfd_signed_vma *) xmalloc (alloc * sizeof *vals); | |
453 | count = 0; | |
454 | ||
015dc7e1 | 455 | done = false; |
252b5132 RH |
456 | while (! done |
457 | && symbols->coff_symno < symend | |
458 | && symbols->symno < symbols->symcount) | |
459 | { | |
460 | asymbol *sym; | |
461 | struct internal_syment syment; | |
462 | ||
463 | sym = symbols->syms[symbols->symno]; | |
464 | ||
465 | if (! bfd_coff_get_syment (abfd, sym, &syment)) | |
466 | { | |
37cc8ec1 AM |
467 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
468 | bfd_errmsg (bfd_get_error ())); | |
e3d39609 NC |
469 | free (names); |
470 | free (vals); | |
252b5132 RH |
471 | return DEBUG_TYPE_NULL; |
472 | } | |
473 | ||
474 | ++symbols->symno; | |
475 | symbols->coff_symno += 1 + syment.n_numaux; | |
476 | ||
477 | switch (syment.n_sclass) | |
478 | { | |
479 | case C_MOE: | |
480 | if (count + 1 >= alloc) | |
481 | { | |
482 | alloc += 10; | |
483 | names = ((const char **) | |
484 | xrealloc (names, alloc * sizeof *names)); | |
485 | vals = ((bfd_signed_vma *) | |
486 | xrealloc (vals, alloc * sizeof *vals)); | |
487 | } | |
488 | ||
489 | names[count] = bfd_asymbol_name (sym); | |
490 | vals[count] = bfd_asymbol_value (sym); | |
491 | ++count; | |
492 | break; | |
493 | ||
494 | case C_EOS: | |
015dc7e1 | 495 | done = true; |
252b5132 RH |
496 | break; |
497 | } | |
498 | } | |
499 | ||
500 | names[count] = NULL; | |
19cacf67 AM |
501 | vals[count] = 0; |
502 | xnames = debug_xalloc (dhandle, (count + 1) * sizeof (*names)); | |
503 | memcpy (xnames, names, (count + 1) * sizeof (*names)); | |
504 | free (names); | |
505 | xvals = debug_xalloc (dhandle, (count + 1) * sizeof (*vals)); | |
506 | memcpy (xvals, vals, (count + 1) * sizeof (*vals)); | |
507 | free (vals); | |
508 | ||
509 | return debug_make_enum_type (dhandle, xnames, xvals); | |
252b5132 RH |
510 | } |
511 | ||
512 | /* Handle a single COFF symbol. */ | |
513 | ||
015dc7e1 | 514 | static bool |
945efa5c | 515 | parse_coff_symbol (bfd *abfd ATTRIBUTE_UNUSED, struct coff_types **types, |
2da42df6 AJ |
516 | asymbol *sym, long coff_symno, |
517 | struct internal_syment *psyment, void *dhandle, | |
015dc7e1 | 518 | debug_type type, bool within_function) |
252b5132 RH |
519 | { |
520 | switch (psyment->n_sclass) | |
521 | { | |
522 | case C_NULL: | |
523 | break; | |
524 | ||
525 | case C_AUTO: | |
526 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, | |
527 | DEBUG_LOCAL, bfd_asymbol_value (sym))) | |
015dc7e1 | 528 | return false; |
252b5132 RH |
529 | break; |
530 | ||
05c58a7c | 531 | case C_WEAKEXT: |
252b5132 RH |
532 | case C_EXT: |
533 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, | |
534 | DEBUG_GLOBAL, bfd_asymbol_value (sym))) | |
015dc7e1 | 535 | return false; |
252b5132 RH |
536 | break; |
537 | ||
538 | case C_STAT: | |
539 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, | |
540 | (within_function | |
541 | ? DEBUG_LOCAL_STATIC | |
542 | : DEBUG_STATIC), | |
543 | bfd_asymbol_value (sym))) | |
015dc7e1 | 544 | return false; |
252b5132 RH |
545 | break; |
546 | ||
547 | case C_REG: | |
548 | /* FIXME: We may need to convert the register number. */ | |
549 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, | |
550 | DEBUG_REGISTER, bfd_asymbol_value (sym))) | |
015dc7e1 | 551 | return false; |
252b5132 RH |
552 | break; |
553 | ||
554 | case C_LABEL: | |
555 | break; | |
556 | ||
557 | case C_ARG: | |
558 | if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type, | |
559 | DEBUG_PARM_STACK, bfd_asymbol_value (sym))) | |
015dc7e1 | 560 | return false; |
252b5132 RH |
561 | break; |
562 | ||
563 | case C_REGPARM: | |
564 | /* FIXME: We may need to convert the register number. */ | |
565 | if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type, | |
566 | DEBUG_PARM_REG, bfd_asymbol_value (sym))) | |
015dc7e1 | 567 | return false; |
252b5132 RH |
568 | break; |
569 | ||
570 | case C_TPDEF: | |
571 | type = debug_name_type (dhandle, bfd_asymbol_name (sym), type); | |
572 | if (type == DEBUG_TYPE_NULL) | |
015dc7e1 | 573 | return false; |
252b5132 RH |
574 | break; |
575 | ||
576 | case C_STRTAG: | |
577 | case C_UNTAG: | |
578 | case C_ENTAG: | |
579 | { | |
580 | debug_type *slot; | |
581 | ||
582 | type = debug_tag_type (dhandle, bfd_asymbol_name (sym), type); | |
583 | if (type == DEBUG_TYPE_NULL) | |
015dc7e1 | 584 | return false; |
252b5132 RH |
585 | |
586 | /* Store the named type into the slot, so that references get | |
587 | the name. */ | |
19cacf67 | 588 | slot = coff_get_slot (dhandle, types, coff_symno); |
252b5132 RH |
589 | *slot = type; |
590 | } | |
591 | break; | |
592 | ||
593 | default: | |
594 | break; | |
595 | } | |
596 | ||
015dc7e1 | 597 | return true; |
252b5132 RH |
598 | } |
599 | ||
05c58a7c NC |
600 | /* Determine if a symbol has external visibility. */ |
601 | ||
015dc7e1 | 602 | static bool |
2da42df6 | 603 | external_coff_symbol_p (int sym_class) |
05c58a7c NC |
604 | { |
605 | switch (sym_class) | |
606 | { | |
53c7db4b KH |
607 | case C_EXT: |
608 | case C_WEAKEXT: | |
015dc7e1 | 609 | return true; |
05c58a7c NC |
610 | default: |
611 | break; | |
612 | } | |
015dc7e1 | 613 | return false; |
05c58a7c NC |
614 | } |
615 | ||
252b5132 RH |
616 | /* This is the main routine. It looks through all the symbols and |
617 | handles them. */ | |
618 | ||
015dc7e1 | 619 | bool |
2da42df6 | 620 | parse_coff (bfd *abfd, asymbol **syms, long symcount, void *dhandle) |
252b5132 RH |
621 | { |
622 | struct coff_symbols symbols; | |
945efa5c | 623 | struct coff_types *types; |
252b5132 RH |
624 | long next_c_file; |
625 | const char *fnname; | |
626 | int fnclass; | |
627 | int fntype; | |
628 | bfd_vma fnend; | |
629 | alent *linenos; | |
015dc7e1 | 630 | bool within_function; |
252b5132 RH |
631 | long this_coff_symno; |
632 | ||
633 | symbols.syms = syms; | |
634 | symbols.symcount = symcount; | |
635 | symbols.symno = 0; | |
636 | symbols.coff_symno = 0; | |
637 | ||
945efa5c | 638 | types= NULL; |
252b5132 RH |
639 | |
640 | next_c_file = -1; | |
641 | fnname = NULL; | |
642 | fnclass = 0; | |
643 | fntype = 0; | |
644 | fnend = 0; | |
645 | linenos = NULL; | |
015dc7e1 | 646 | within_function = false; |
252b5132 RH |
647 | |
648 | while (symbols.symno < symcount) | |
649 | { | |
650 | asymbol *sym; | |
651 | const char *name; | |
652 | struct internal_syment syment; | |
653 | union internal_auxent auxent; | |
654 | union internal_auxent *paux; | |
655 | debug_type type; | |
656 | ||
657 | sym = syms[symbols.symno]; | |
658 | ||
659 | if (! bfd_coff_get_syment (abfd, sym, &syment)) | |
660 | { | |
37cc8ec1 AM |
661 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
662 | bfd_errmsg (bfd_get_error ())); | |
015dc7e1 | 663 | return false; |
252b5132 RH |
664 | } |
665 | ||
666 | name = bfd_asymbol_name (sym); | |
667 | ||
668 | this_coff_symno = symbols.coff_symno; | |
669 | ||
670 | ++symbols.symno; | |
671 | symbols.coff_symno += 1 + syment.n_numaux; | |
672 | ||
673 | /* We only worry about the first auxent, because that is the | |
674 | only one which is relevant for debugging information. */ | |
675 | if (syment.n_numaux == 0) | |
676 | paux = NULL; | |
677 | else | |
678 | { | |
679 | if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent)) | |
680 | { | |
37cc8ec1 AM |
681 | non_fatal (_("bfd_coff_get_auxent failed: %s"), |
682 | bfd_errmsg (bfd_get_error ())); | |
015dc7e1 | 683 | return false; |
252b5132 RH |
684 | } |
685 | paux = &auxent; | |
686 | } | |
687 | ||
688 | if (this_coff_symno == next_c_file && syment.n_sclass != C_FILE) | |
689 | { | |
690 | /* The last C_FILE symbol points to the first external | |
691 | symbol. */ | |
692 | if (! debug_set_filename (dhandle, "*globals*")) | |
015dc7e1 | 693 | return false; |
252b5132 RH |
694 | } |
695 | ||
696 | switch (syment.n_sclass) | |
697 | { | |
698 | case C_EFCN: | |
699 | case C_EXTDEF: | |
700 | case C_ULABEL: | |
701 | case C_USTATIC: | |
702 | case C_LINE: | |
703 | case C_ALIAS: | |
704 | case C_HIDDEN: | |
705 | /* Just ignore these classes. */ | |
706 | break; | |
707 | ||
708 | case C_FILE: | |
709 | next_c_file = syment.n_value; | |
710 | if (! debug_set_filename (dhandle, name)) | |
015dc7e1 | 711 | return false; |
252b5132 RH |
712 | break; |
713 | ||
714 | case C_STAT: | |
715 | /* Ignore static symbols with a type of T_NULL. These | |
716 | represent section entries. */ | |
717 | if (syment.n_type == T_NULL) | |
718 | break; | |
719 | /* Fall through. */ | |
53c7db4b | 720 | case C_WEAKEXT: |
252b5132 RH |
721 | case C_EXT: |
722 | if (ISFCN (syment.n_type)) | |
723 | { | |
724 | fnname = name; | |
725 | fnclass = syment.n_sclass; | |
726 | fntype = syment.n_type; | |
727 | if (syment.n_numaux > 0) | |
728 | fnend = bfd_asymbol_value (sym) + auxent.x_sym.x_misc.x_fsize; | |
729 | else | |
730 | fnend = 0; | |
731 | linenos = BFD_SEND (abfd, _get_lineno, (abfd, sym)); | |
732 | break; | |
733 | } | |
734 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, | |
015dc7e1 | 735 | syment.n_type, paux, true, dhandle); |
252b5132 | 736 | if (type == DEBUG_TYPE_NULL) |
015dc7e1 | 737 | return false; |
252b5132 RH |
738 | if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment, |
739 | dhandle, type, within_function)) | |
015dc7e1 | 740 | return false; |
252b5132 RH |
741 | break; |
742 | ||
743 | case C_FCN: | |
744 | if (strcmp (name, ".bf") == 0) | |
745 | { | |
746 | if (fnname == NULL) | |
747 | { | |
37cc8ec1 AM |
748 | non_fatal (_("%ld: .bf without preceding function"), |
749 | this_coff_symno); | |
015dc7e1 | 750 | return false; |
252b5132 RH |
751 | } |
752 | ||
753 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, | |
015dc7e1 | 754 | DECREF (fntype), paux, false, dhandle); |
252b5132 | 755 | if (type == DEBUG_TYPE_NULL) |
015dc7e1 | 756 | return false; |
252b5132 RH |
757 | |
758 | if (! debug_record_function (dhandle, fnname, type, | |
05c58a7c | 759 | external_coff_symbol_p (fnclass), |
252b5132 | 760 | bfd_asymbol_value (sym))) |
015dc7e1 | 761 | return false; |
252b5132 RH |
762 | |
763 | if (linenos != NULL) | |
764 | { | |
765 | int base; | |
766 | bfd_vma addr; | |
767 | ||
768 | if (syment.n_numaux == 0) | |
769 | base = 0; | |
770 | else | |
771 | base = auxent.x_sym.x_misc.x_lnsz.x_lnno - 1; | |
772 | ||
fd361982 | 773 | addr = bfd_section_vma (bfd_asymbol_section (sym)); |
252b5132 RH |
774 | |
775 | ++linenos; | |
776 | ||
777 | while (linenos->line_number != 0) | |
778 | { | |
779 | if (! debug_record_line (dhandle, | |
780 | linenos->line_number + base, | |
781 | linenos->u.offset + addr)) | |
015dc7e1 | 782 | return false; |
252b5132 RH |
783 | ++linenos; |
784 | } | |
785 | } | |
786 | ||
787 | fnname = NULL; | |
788 | linenos = NULL; | |
789 | fnclass = 0; | |
790 | fntype = 0; | |
791 | ||
015dc7e1 | 792 | within_function = true; |
252b5132 RH |
793 | } |
794 | else if (strcmp (name, ".ef") == 0) | |
795 | { | |
796 | if (! within_function) | |
797 | { | |
37cc8ec1 | 798 | non_fatal (_("%ld: unexpected .ef\n"), this_coff_symno); |
015dc7e1 | 799 | return false; |
252b5132 RH |
800 | } |
801 | ||
802 | if (bfd_asymbol_value (sym) > fnend) | |
803 | fnend = bfd_asymbol_value (sym); | |
804 | if (! debug_end_function (dhandle, fnend)) | |
015dc7e1 | 805 | return false; |
252b5132 RH |
806 | |
807 | fnend = 0; | |
015dc7e1 | 808 | within_function = false; |
252b5132 RH |
809 | } |
810 | break; | |
811 | ||
812 | case C_BLOCK: | |
813 | if (strcmp (name, ".bb") == 0) | |
814 | { | |
815 | if (! debug_start_block (dhandle, bfd_asymbol_value (sym))) | |
015dc7e1 | 816 | return false; |
252b5132 RH |
817 | } |
818 | else if (strcmp (name, ".eb") == 0) | |
819 | { | |
820 | if (! debug_end_block (dhandle, bfd_asymbol_value (sym))) | |
015dc7e1 | 821 | return false; |
252b5132 RH |
822 | } |
823 | break; | |
824 | ||
825 | default: | |
826 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, | |
015dc7e1 | 827 | syment.n_type, paux, true, dhandle); |
252b5132 | 828 | if (type == DEBUG_TYPE_NULL) |
015dc7e1 | 829 | return false; |
252b5132 RH |
830 | if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment, |
831 | dhandle, type, within_function)) | |
015dc7e1 | 832 | return false; |
252b5132 RH |
833 | break; |
834 | } | |
835 | } | |
836 | ||
015dc7e1 | 837 | return true; |
252b5132 | 838 | } |