Commit | Line | Data |
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bd5635a1 | 1 | /* Read a symbol table in MIPS' format (Third-Eye). |
d747e0af MT |
2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc. |
3 | Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major | |
4 | work by Per Bothner and John Gilmore at Cygnus Support. | |
bd5635a1 RP |
5 | |
6 | This file is part of GDB. | |
7 | ||
b8c50f09 | 8 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 9 | it under the terms of the GNU General Public License as published by |
b8c50f09 JG |
10 | the Free Software Foundation; either version 2 of the License, or |
11 | (at your option) any later version. | |
bd5635a1 | 12 | |
b8c50f09 | 13 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
b8c50f09 JG |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 21 | |
3eaebb75 | 22 | /* This module provides three functions: mipscoff_symfile_init, |
817bc7b8 | 23 | which initializes to read a symbol file; mipscoff_new_init, which |
3eaebb75 SG |
24 | discards existing cached information when all symbols are being |
25 | discarded; and mipscoff_symfile_read, which reads a symbol table | |
26 | from a file. | |
27 | ||
28 | mipscoff_symfile_read only does the minimum work necessary for letting the | |
29 | user "name" things symbolically; it does not read the entire symtab. | |
30 | Instead, it reads the external and static symbols and puts them in partial | |
31 | symbol tables. When more extensive information is requested of a | |
32 | file, the corresponding partial symbol table is mutated into a full | |
33 | fledged symbol table by going back and reading the symbols | |
34 | for real. mipscoff_psymtab_to_symtab() is called indirectly through | |
d747e0af MT |
35 | a pointer in the psymtab to do this. |
36 | ||
37 | ECOFF symbol tables are mostly written in the byte order of the | |
38 | target machine. However, one section of the table (the auxiliary | |
39 | symbol information) is written in the host byte order. There is a | |
40 | bit in the other symbol info which describes which host byte order | |
41 | was used. ECOFF thereby takes the trophy from Intel `b.out' for | |
42 | the most brain-dead adaptation of a file format to byte order. | |
43 | ||
44 | This module can read all four of the known byte-order combinations, | |
45 | on any type of host. However, it does make (and check) the assumption | |
817bc7b8 | 46 | that the external form of a symbol table structure (on disk) |
d747e0af MT |
47 | occupies the same number of bytes as the internal form (in a struct). |
48 | Fixing this is possible but requires larger structural changes. */ | |
49 | ||
50 | #define TM_FILE_OVERRIDE | |
bd5635a1 | 51 | #include "defs.h" |
d747e0af | 52 | #include "tm-mips.h" |
bd5635a1 | 53 | #include "symtab.h" |
d747e0af | 54 | #include "gdbtypes.h" |
bd5635a1 RP |
55 | #include "gdbcore.h" |
56 | #include "symfile.h" | |
5e2e79f8 | 57 | #include "objfiles.h" |
7d9884b9 | 58 | #include "obstack.h" |
7e258d18 | 59 | #include "buildsym.h" |
817bc7b8 JG |
60 | |
61 | #ifdef USG | |
62 | #include <sys/types.h> | |
63 | #define L_SET 0 | |
64 | #define L_INCR 1 | |
65 | #endif | |
66 | ||
7d9884b9 JG |
67 | #include <sys/param.h> |
68 | #include <sys/file.h> | |
69 | #include <sys/stat.h> | |
b303297a | 70 | #include <strings.h> |
bd5635a1 | 71 | |
817bc7b8 JG |
72 | #include "coff/mips.h" /* COFF-like aspects of ecoff files */ |
73 | #include "coff/sym.h" /* Symbol structures in ecoff files */ | |
74 | #include "coff/symconst.h" /* Manifest constants in ecoff sym structures */ | |
75 | #include "coff/ecoff-ext.h" /* External forms of ecoff sym structures */ | |
e10a3052 | 76 | |
84ffdec2 | 77 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
7e258d18 | 78 | #include "aout/aout64.h" |
817bc7b8 | 79 | #include "aout/stab_gnu.h" /* STABS information */ |
bd5635a1 RP |
80 | |
81 | struct coff_exec { | |
b8c50f09 JG |
82 | struct external_filehdr f; |
83 | struct external_aouthdr a; | |
bd5635a1 | 84 | }; |
bd5635a1 | 85 | |
d4ea2aba PB |
86 | /* These must match the corresponding definition in gcc/config/xm-mips.h. |
87 | At some point, these should probably go into a shared include file, | |
88 | but currently gcc and gdb do not share any directories. */ | |
7e258d18 PB |
89 | |
90 | #define CODE_MASK 0x8F300 | |
91 | #define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK) | |
92 | #define MIPS_MARK_STAB(code) ((code)+CODE_MASK) | |
93 | #define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK) | |
c55e6167 | 94 | #define STABS_SYMBOL "@stabs" |
7e258d18 | 95 | |
4a35d6e9 FF |
96 | /* Each partial symbol table entry contains a pointer to private data for the |
97 | read_symtab() function to use when expanding a partial symbol table entry | |
98 | to a full symbol table entry. | |
99 | ||
100 | For mipsread this structure contains the index of the FDR that this psymtab | |
101 | represents and a pointer to the symbol table header HDRR from the symbol | |
a048c8f5 | 102 | file that the psymtab was created from. */ |
4a35d6e9 | 103 | |
d4ea2aba PB |
104 | #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private) |
105 | #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx) | |
106 | #define CUR_HDR(p) (PST_PRIVATE(p)->cur_hdr) | |
4a35d6e9 FF |
107 | |
108 | struct symloc { | |
109 | int fdr_idx; | |
110 | HDRR *cur_hdr; | |
d4ea2aba PB |
111 | EXTR **extern_tab; /* Pointer to external symbols for this file. */ |
112 | int extern_count; /* Size of extern_tab. */ | |
4a35d6e9 FF |
113 | }; |
114 | ||
bd5635a1 RP |
115 | /* Things we import explicitly from other modules */ |
116 | ||
117 | extern int info_verbose; | |
bd5635a1 | 118 | |
3eaebb75 | 119 | /* Various complaints about symbol reading that don't abort the process */ |
817bc7b8 JG |
120 | |
121 | struct complaint bad_file_number_complaint = | |
021959e2 JG |
122 | {"bad file number %d", 0, 0}; |
123 | ||
817bc7b8 JG |
124 | struct complaint index_complaint = |
125 | {"bad aux index at symbol %s", 0, 0}; | |
126 | ||
127 | struct complaint aux_index_complaint = | |
128 | {"bad proc end in aux found from symbol %s", 0, 0}; | |
129 | ||
130 | struct complaint unknown_ext_complaint = | |
bd5635a1 RP |
131 | {"unknown external symbol %s", 0, 0}; |
132 | ||
817bc7b8 | 133 | struct complaint unknown_sym_complaint = |
101f259c JG |
134 | {"unknown local symbol %s", 0, 0}; |
135 | ||
817bc7b8 | 136 | struct complaint unknown_st_complaint = |
101f259c JG |
137 | {"with type %d", 0, 0}; |
138 | ||
817bc7b8 | 139 | struct complaint block_overflow_complaint = |
3eaebb75 SG |
140 | {"block containing %s overfilled", 0, 0}; |
141 | ||
817bc7b8 | 142 | struct complaint basic_type_complaint = |
3eaebb75 SG |
143 | {"cannot map MIPS basic type 0x%x", 0, 0}; |
144 | ||
817bc7b8 | 145 | struct complaint unknown_type_qual_complaint = |
3eaebb75 SG |
146 | {"unknown type qualifier 0x%x", 0, 0}; |
147 | ||
817bc7b8 | 148 | struct complaint array_bitsize_complaint = |
3eaebb75 SG |
149 | {"size of array target type not known, assuming %d bits", 0, 0}; |
150 | ||
817bc7b8 JG |
151 | struct complaint bad_tag_guess_complaint = |
152 | {"guessed tag type of %s incorrectly", 0, 0}; | |
153 | ||
154 | struct complaint block_member_complaint = | |
155 | {"declaration block contains unhandled symbol type %d", 0, 0}; | |
156 | ||
157 | struct complaint stEnd_complaint = | |
158 | {"stEnd with storage class %d not handled", 0, 0}; | |
159 | ||
160 | struct complaint unknown_mips_symtype_complaint = | |
161 | {"unknown symbol type 0x%x", 0, 0}; | |
162 | ||
163 | struct complaint stab_unknown_complaint = | |
164 | {"unknown stabs symbol %s", 0, 0}; | |
165 | ||
166 | struct complaint pdr_for_nonsymbol_complaint = | |
167 | {"PDR for %s, but no symbol", 0, 0}; | |
168 | ||
169 | struct complaint pdr_static_symbol_complaint = | |
170 | {"can't handle PDR for static proc at 0x%x", 0, 0}; | |
c55e6167 | 171 | |
3eaebb75 SG |
172 | /* Macros and extra defs */ |
173 | ||
174 | /* Already-parsed symbols are marked specially */ | |
bd5635a1 RP |
175 | |
176 | #define stParsed stType | |
177 | ||
178 | /* Puns: hard to find whether -g was used and how */ | |
179 | ||
180 | #define MIN_GLEVEL GLEVEL_0 | |
181 | #define compare_glevel(a,b) \ | |
182 | (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \ | |
183 | ((b) == GLEVEL_3) ? -1 : (int)((b) - (a))) | |
184 | ||
3eaebb75 | 185 | /* When looking at .o files, avoid tripping over bad addresses */ |
bd5635a1 RP |
186 | |
187 | #define SAFE_TEXT_ADDR 0x400000 | |
188 | #define SAFE_DATA_ADDR 0x10000000 | |
189 | ||
190 | #define UNSAFE_DATA_ADDR(p) ((unsigned)p < SAFE_DATA_ADDR || (unsigned)p > 2*SAFE_DATA_ADDR) | |
e072c738 JG |
191 | \f |
192 | /* Things that really are local to this module */ | |
193 | ||
3eaebb75 SG |
194 | /* MIPS symtab header for the current file */ |
195 | ||
196 | static HDRR *cur_hdr; | |
197 | ||
e072c738 JG |
198 | /* Pointer to current file decriptor record, and its index */ |
199 | ||
200 | static FDR *cur_fdr; | |
201 | static int cur_fd; | |
202 | ||
203 | /* Index of current symbol */ | |
204 | ||
205 | static int cur_sdx; | |
206 | ||
207 | /* Note how much "debuggable" this image is. We would like | |
208 | to see at least one FDR with full symbols */ | |
209 | ||
210 | static max_gdbinfo; | |
211 | static max_glevel; | |
212 | ||
213 | /* When examining .o files, report on undefined symbols */ | |
214 | ||
215 | static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs; | |
216 | ||
7e258d18 PB |
217 | /* Pseudo symbol to use when putting stabs into the symbol table. */ |
218 | ||
c55e6167 | 219 | static char stabs_symbol[] = STABS_SYMBOL; |
7e258d18 | 220 | |
e072c738 JG |
221 | /* Extra builtin types */ |
222 | ||
223 | struct type *builtin_type_complex; | |
224 | struct type *builtin_type_double_complex; | |
225 | struct type *builtin_type_fixed_dec; | |
226 | struct type *builtin_type_float_dec; | |
227 | struct type *builtin_type_string; | |
228 | ||
3eaebb75 | 229 | /* Forward declarations */ |
e072c738 | 230 | |
d747e0af | 231 | static void |
84ffdec2 | 232 | fixup_symtab PARAMS ((HDRR *, char *, int, bfd *)); |
d747e0af MT |
233 | |
234 | static void | |
817bc7b8 | 235 | read_mips_symtab PARAMS ((struct objfile *)); |
84ffdec2 JG |
236 | |
237 | static void | |
817bc7b8 | 238 | read_the_mips_symtab PARAMS ((bfd *, CORE_ADDR *)); |
84ffdec2 JG |
239 | |
240 | static int | |
e10a3052 | 241 | upgrade_type PARAMS ((struct type **, int, union aux_ext *, int)); |
84ffdec2 JG |
242 | |
243 | static void | |
244 | parse_partial_symbols PARAMS ((int, struct objfile *)); | |
d747e0af MT |
245 | |
246 | static int | |
e5578a31 SG |
247 | cross_ref PARAMS ((union aux_ext *, struct type **, enum type_code, char **, |
248 | int)); | |
84ffdec2 JG |
249 | |
250 | static void | |
251 | fixup_sigtramp PARAMS ((void)); | |
252 | ||
253 | static struct symbol * | |
254 | new_symbol PARAMS ((char *)); | |
255 | ||
256 | static struct type * | |
257 | new_type PARAMS ((char *)); | |
258 | ||
259 | static struct block * | |
260 | new_block PARAMS ((int)); | |
261 | ||
262 | static struct symtab * | |
263 | new_symtab PARAMS ((char *, int, int, struct objfile *)); | |
264 | ||
265 | static struct linetable * | |
266 | new_linetable PARAMS ((int)); | |
267 | ||
268 | static struct blockvector * | |
269 | new_bvect PARAMS ((int)); | |
270 | ||
271 | static struct type * | |
272 | parse_type PARAMS ((union aux_ext *, int *, int)); | |
273 | ||
274 | static struct symbol * | |
275 | mylookup_symbol PARAMS ((char *, struct block *, enum namespace, | |
276 | enum address_class)); | |
277 | ||
278 | static struct block * | |
279 | shrink_block PARAMS ((struct block *, struct symtab *)); | |
280 | ||
281 | static PTR | |
282 | xzalloc PARAMS ((unsigned int)); | |
d747e0af MT |
283 | |
284 | static void | |
84ffdec2 | 285 | sort_blocks PARAMS ((struct symtab *)); |
d747e0af MT |
286 | |
287 | static int | |
391ca579 | 288 | compare_blocks PARAMS ((const void *, const void *)); |
84ffdec2 JG |
289 | |
290 | static struct partial_symtab * | |
291 | new_psymtab PARAMS ((char *, struct objfile *)); | |
292 | ||
293 | #if 0 | |
294 | static struct partial_symtab * | |
295 | parse_fdr PARAMS ((int, int, struct objfile *)); | |
296 | #endif | |
d747e0af MT |
297 | |
298 | static void | |
84ffdec2 | 299 | psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *)); |
c55e6167 | 300 | |
84ffdec2 JG |
301 | static void |
302 | add_block PARAMS ((struct block *, struct symtab *)); | |
303 | ||
304 | static void | |
305 | add_symbol PARAMS ((struct symbol *, struct block *)); | |
306 | ||
307 | static int | |
308 | add_line PARAMS ((struct linetable *, int, CORE_ADDR, int)); | |
309 | ||
310 | static struct linetable * | |
311 | shrink_linetable PARAMS ((struct linetable *)); | |
312 | ||
313 | static char * | |
314 | mips_next_symbol_text PARAMS ((void)); | |
bd5635a1 RP |
315 | \f |
316 | /* Things we export to other modules */ | |
317 | ||
bd5635a1 | 318 | /* Address bounds for the signal trampoline in inferior, if any */ |
101f259c | 319 | /* FIXME: Nothing really seems to use this. Why is it here? */ |
bd5635a1 RP |
320 | |
321 | CORE_ADDR sigtramp_address, sigtramp_end; | |
322 | ||
4ad1963e | 323 | static void |
84ffdec2 JG |
324 | mipscoff_new_init (ignore) |
325 | struct objfile *ignore; | |
bd5635a1 RP |
326 | { |
327 | } | |
328 | ||
4ad1963e | 329 | static void |
80d68b1d FF |
330 | mipscoff_symfile_init (objfile) |
331 | struct objfile *objfile; | |
bd5635a1 | 332 | { |
80d68b1d FF |
333 | if (objfile -> sym_private != NULL) |
334 | { | |
335 | mfree (objfile -> md, objfile -> sym_private); | |
336 | } | |
337 | objfile -> sym_private = NULL; | |
bd5635a1 RP |
338 | } |
339 | ||
4ad1963e | 340 | static void |
80d68b1d FF |
341 | mipscoff_symfile_read (objfile, addr, mainline) |
342 | struct objfile *objfile; | |
bd5635a1 RP |
343 | CORE_ADDR addr; |
344 | int mainline; | |
345 | { | |
80d68b1d | 346 | bfd *abfd = objfile -> obfd; |
bd5635a1 | 347 | |
021959e2 JG |
348 | init_minimal_symbol_collection (); |
349 | make_cleanup (discard_minimal_symbols, 0); | |
bd5635a1 RP |
350 | |
351 | /* Now that the executable file is positioned at symbol table, | |
352 | process it and define symbols accordingly. */ | |
353 | ||
817bc7b8 | 354 | read_mips_symtab(objfile); |
bd5635a1 | 355 | |
021959e2 JG |
356 | /* Install any minimal symbols that have been collected as the current |
357 | minimal symbols for this objfile. */ | |
bd5635a1 | 358 | |
80d68b1d | 359 | install_minimal_symbols (objfile); |
bd5635a1 | 360 | } |
817bc7b8 | 361 | |
80d68b1d FF |
362 | /* Perform any local cleanups required when we are done with a particular |
363 | objfile. I.E, we are in the process of discarding all symbol information | |
364 | for an objfile, freeing up all memory held for it, and unlinking the | |
365 | objfile struct from the global list of known objfiles. */ | |
366 | ||
367 | static void | |
368 | mipscoff_symfile_finish (objfile) | |
369 | struct objfile *objfile; | |
370 | { | |
371 | if (objfile -> sym_private != NULL) | |
372 | { | |
373 | mfree (objfile -> md, objfile -> sym_private); | |
374 | } | |
375 | ||
376 | /* If we have a file symbol header lying around, blow it away. */ | |
377 | ||
378 | if (cur_hdr) | |
379 | { | |
84ffdec2 | 380 | free ((PTR)cur_hdr); |
80d68b1d FF |
381 | } |
382 | cur_hdr = 0; | |
383 | } | |
384 | ||
d747e0af | 385 | /* Allocate zeroed memory */ |
bd5635a1 | 386 | |
84ffdec2 | 387 | static PTR |
0c4d2cc2 | 388 | xzalloc(size) |
e10a3052 | 389 | unsigned int size; |
bd5635a1 | 390 | { |
84ffdec2 | 391 | PTR p = xmalloc(size); |
bd5635a1 | 392 | |
7e258d18 | 393 | memset(p, 0, size); |
bd5635a1 RP |
394 | return p; |
395 | } | |
396 | ||
397 | /* Exported procedure: Builds a symtab from the PST partial one. | |
398 | Restores the environment in effect when PST was created, delegates | |
399 | most of the work to an ancillary procedure, and sorts | |
400 | and reorders the symtab list at the end */ | |
401 | ||
3eaebb75 | 402 | static void |
bd5635a1 RP |
403 | mipscoff_psymtab_to_symtab(pst) |
404 | struct partial_symtab *pst; | |
405 | { | |
bd5635a1 RP |
406 | |
407 | if (!pst) | |
408 | return; | |
409 | ||
410 | if (info_verbose) { | |
411 | printf_filtered("Reading in symbols for %s...", pst->filename); | |
412 | fflush(stdout); | |
413 | } | |
414 | /* Restore the header and list of pending typedefs */ | |
4a35d6e9 | 415 | cur_hdr = CUR_HDR(pst); |
bd5635a1 | 416 | |
c55e6167 JG |
417 | next_symbol_text_func = mips_next_symbol_text; |
418 | ||
3eaebb75 | 419 | psymtab_to_symtab_1(pst, pst->filename); |
bd5635a1 | 420 | |
7e258d18 PB |
421 | /* Match with global symbols. This only needs to be done once, |
422 | after all of the symtabs and dependencies have been read in. */ | |
021959e2 | 423 | scan_file_globals (pst->objfile); |
bd5635a1 | 424 | |
bd5635a1 RP |
425 | if (info_verbose) |
426 | printf_filtered("done.\n"); | |
427 | } | |
428 | ||
429 | /* Exported procedure: Is PC in the signal trampoline code */ | |
430 | ||
b8c50f09 | 431 | int |
84ffdec2 | 432 | in_sigtramp(pc, ignore) |
bd5635a1 | 433 | CORE_ADDR pc; |
84ffdec2 | 434 | char *ignore; /* function name */ |
bd5635a1 RP |
435 | { |
436 | if (sigtramp_address == 0) | |
437 | fixup_sigtramp(); | |
438 | return (pc >= sigtramp_address && pc < sigtramp_end); | |
439 | } | |
bd5635a1 RP |
440 | \f |
441 | /* File-level interface functions */ | |
442 | ||
817bc7b8 | 443 | /* Read the symtab information from file ABFD into memory. Also, |
b8c50f09 | 444 | return address just past end of our text segment in *END_OF_TEXT_SEGP. */ |
bd5635a1 | 445 | |
84ffdec2 | 446 | static void |
817bc7b8 | 447 | read_the_mips_symtab(abfd, end_of_text_segp) |
84ffdec2 | 448 | bfd *abfd; |
b8c50f09 | 449 | CORE_ADDR *end_of_text_segp; |
bd5635a1 RP |
450 | { |
451 | int stsize, st_hdrsize; | |
452 | unsigned st_filptr; | |
d747e0af | 453 | struct hdr_ext hdr_ext; |
bd5635a1 | 454 | HDRR st_hdr; |
b8c50f09 JG |
455 | /* Header for executable/object file we read symbols from */ |
456 | struct coff_exec filhdr; | |
817bc7b8 | 457 | int val; |
b8c50f09 | 458 | |
bec9fad9 | 459 | /* We need some info from the initial headers */ |
817bc7b8 JG |
460 | val = bfd_seek(abfd, 0L, L_SET); |
461 | val = bfd_read((PTR)&filhdr, sizeof filhdr, 1, abfd); | |
b8c50f09 JG |
462 | |
463 | if (end_of_text_segp) | |
464 | *end_of_text_segp = | |
465 | bfd_h_get_32 (abfd, filhdr.a.text_start) + | |
466 | bfd_h_get_32 (abfd, filhdr.a.tsize); | |
bd5635a1 RP |
467 | |
468 | /* Find and read the symbol table header */ | |
b8c50f09 JG |
469 | st_hdrsize = bfd_h_get_32 (abfd, filhdr.f.f_nsyms); |
470 | st_filptr = bfd_h_get_32 (abfd, filhdr.f.f_symptr); | |
bd5635a1 | 471 | if (st_filptr == 0) |
84ffdec2 | 472 | return; |
bd5635a1 | 473 | |
817bc7b8 | 474 | bfd_seek (abfd, st_filptr, L_SET); |
d747e0af MT |
475 | if (st_hdrsize != sizeof (hdr_ext)) { /* Profanity check */ |
476 | error ("Wrong header size: %d, not %d", st_hdrsize, | |
477 | sizeof (hdr_ext)); | |
478 | } | |
817bc7b8 | 479 | if (bfd_read((PTR)&hdr_ext, st_hdrsize, 1, abfd) != st_hdrsize) |
bd5635a1 | 480 | goto readerr; |
d747e0af | 481 | ecoff_swap_hdr_in (abfd, &hdr_ext, &st_hdr); |
bd5635a1 RP |
482 | |
483 | /* Find out how large the symbol table is */ | |
484 | stsize = (st_hdr.cbExtOffset - (st_filptr + st_hdrsize)) | |
485 | + st_hdr.iextMax * cbEXTR; | |
486 | ||
487 | /* Allocate space for the symbol table. Read it in. */ | |
488 | cur_hdr = (HDRR *) xmalloc(stsize + st_hdrsize); | |
489 | ||
84ffdec2 | 490 | memcpy((PTR)cur_hdr, (PTR)&hdr_ext, st_hdrsize); |
817bc7b8 | 491 | if (bfd_read((char *)cur_hdr + st_hdrsize, stsize, 1, abfd) != stsize) |
bd5635a1 RP |
492 | goto readerr; |
493 | ||
494 | /* Fixup file_pointers in it */ | |
495 | fixup_symtab(cur_hdr, (char *) cur_hdr + st_hdrsize, | |
d747e0af | 496 | st_filptr + st_hdrsize, abfd); |
bd5635a1 RP |
497 | |
498 | return; | |
499 | readerr: | |
c9bd6710 | 500 | error("Short read on %s", bfd_get_filename (abfd)); |
bd5635a1 RP |
501 | } |
502 | ||
503 | ||
504 | /* Turn all file-relative pointers in the symtab described by HDR | |
505 | into memory pointers, given that the symtab itself is located | |
d747e0af | 506 | at DATA in memory and F_PTR in the file. |
bd5635a1 | 507 | |
d747e0af MT |
508 | Byte-swap all the data structures, in place, while we are at it -- |
509 | except AUX entries, which we leave in their original byte order. | |
510 | They will be swapped as they are used instead. (FIXME: we ought to | |
511 | do all the data structures that way.) */ | |
512 | ||
513 | static void | |
514 | fixup_symtab (hdr, data, f_ptr, abfd) | |
bd5635a1 RP |
515 | HDRR *hdr; |
516 | char *data; | |
d747e0af MT |
517 | int f_ptr; |
518 | bfd *abfd; | |
bd5635a1 | 519 | { |
bec9fad9 | 520 | int f_idx, s_idx, i; |
bd5635a1 RP |
521 | FDR *fh; |
522 | SYMR *sh; | |
bd5635a1 RP |
523 | PDR *pr; |
524 | EXTR *esh; | |
bec9fad9 | 525 | struct rfd_ext *rbase; |
bd5635a1 | 526 | |
d747e0af MT |
527 | /* This function depends on the external and internal forms |
528 | of the MIPS symbol table taking identical space. Check this | |
529 | assumption at compile-time. */ | |
530 | static check_hdr1[1 + sizeof (struct hdr_ext) - sizeof (HDRR)] = {0}; | |
531 | static check_hdr2[1 + sizeof (HDRR) - sizeof (struct hdr_ext)] = {0}; | |
532 | static check_fdr1[1 + sizeof (struct fdr_ext) - sizeof (FDR)] = {0}; | |
533 | static check_fdr2[1 + sizeof (FDR) - sizeof (struct fdr_ext)] = {0}; | |
534 | static check_pdr1[1 + sizeof (struct pdr_ext) - sizeof (PDR)] = {0}; | |
535 | static check_pdr2[1 + sizeof (PDR) - sizeof (struct pdr_ext)] = {0}; | |
536 | static check_sym1[1 + sizeof (struct sym_ext) - sizeof (SYMR)] = {0}; | |
537 | static check_sym2[1 + sizeof (SYMR) - sizeof (struct sym_ext)] = {0}; | |
538 | static check_ext1[1 + sizeof (struct ext_ext) - sizeof (EXTR)] = {0}; | |
539 | static check_ext2[1 + sizeof (EXTR) - sizeof (struct ext_ext)] = {0}; | |
bec9fad9 JG |
540 | static check_rfd1[1 + sizeof (struct rfd_ext) - sizeof (RFDT)] = {0}; |
541 | static check_rfd2[1 + sizeof (RFDT) - sizeof (struct rfd_ext)] = {0}; | |
d747e0af MT |
542 | |
543 | /* Swap in the header record. */ | |
544 | ecoff_swap_hdr_in (abfd, hdr, hdr); | |
545 | ||
bd5635a1 RP |
546 | /* |
547 | * These fields are useless (and empty) by now: | |
548 | * hdr->cbDnOffset, hdr->cbOptOffset | |
549 | * We use them for other internal purposes. | |
550 | */ | |
551 | hdr->cbDnOffset = 0; | |
552 | hdr->cbOptOffset = 0; | |
553 | ||
554 | #define FIX(off) \ | |
555 | if (hdr->off) hdr->off = (unsigned int)data + (hdr->off - f_ptr); | |
556 | ||
557 | FIX(cbLineOffset); | |
558 | FIX(cbPdOffset); | |
559 | FIX(cbSymOffset); | |
560 | FIX(cbOptOffset); | |
561 | FIX(cbAuxOffset); | |
562 | FIX(cbSsOffset); | |
563 | FIX(cbSsExtOffset); | |
564 | FIX(cbFdOffset); | |
565 | FIX(cbRfdOffset); | |
566 | FIX(cbExtOffset); | |
567 | #undef FIX | |
568 | ||
bec9fad9 JG |
569 | /* Fix all the RFD's. */ |
570 | rbase = (struct rfd_ext *)(hdr->cbRfdOffset); | |
571 | for (i = 0; i < hdr->crfd; i++) { | |
572 | ecoff_swap_rfd_in (abfd, rbase+i, (pRFDT) rbase+i); | |
573 | } | |
bd5635a1 | 574 | |
d747e0af MT |
575 | /* Fix all string pointers inside the symtab, and |
576 | the FDR records. Also fix other miscellany. */ | |
577 | ||
bd5635a1 RP |
578 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) { |
579 | register unsigned code_offset; | |
580 | ||
581 | /* Header itself, and strings */ | |
582 | fh = (FDR *) (hdr->cbFdOffset) + f_idx; | |
d747e0af MT |
583 | |
584 | /* Swap in the FDR */ | |
585 | ecoff_swap_fdr_in (abfd, fh, fh); | |
586 | ||
bd5635a1 RP |
587 | fh->issBase += hdr->cbSsOffset; |
588 | if (fh->rss != -1) | |
589 | fh->rss = (long)fh->rss + fh->issBase; | |
7e258d18 PB |
590 | |
591 | /* Local symbols */ | |
592 | fh->isymBase = (int)((SYMR*)(hdr->cbSymOffset)+fh->isymBase); | |
593 | ||
594 | /* FIXME! Probably don't want to do this here! */ | |
bd5635a1 | 595 | for (s_idx = 0; s_idx < fh->csym; s_idx++) { |
7e258d18 | 596 | sh = (SYMR*)fh->isymBase + s_idx; |
d747e0af MT |
597 | ecoff_swap_sym_in (abfd, sh, sh); |
598 | ||
bd5635a1 RP |
599 | sh->iss = (long) sh->iss + fh->issBase; |
600 | sh->reserved = 0; | |
601 | } | |
602 | ||
603 | cur_fd = f_idx; | |
604 | ||
bd5635a1 RP |
605 | /* cannot fix fh->ipdFirst because it is a short */ |
606 | #define IPDFIRST(h,fh) \ | |
607 | ((long)h->cbPdOffset + fh->ipdFirst * sizeof(PDR)) | |
608 | ||
609 | /* Optional symbols (actually used for partial_symtabs) */ | |
610 | fh->ioptBase = 0; | |
611 | fh->copt = 0; | |
612 | ||
613 | /* Aux symbols */ | |
614 | if (fh->caux) | |
d747e0af | 615 | fh->iauxBase = hdr->cbAuxOffset + fh->iauxBase * sizeof(union aux_ext); |
bd5635a1 RP |
616 | /* Relative file descriptor table */ |
617 | fh->rfdBase = hdr->cbRfdOffset + fh->rfdBase * sizeof(RFDT); | |
618 | ||
619 | /* Line numbers */ | |
620 | if (fh->cbLine) | |
621 | fh->cbLineOffset += hdr->cbLineOffset; | |
622 | ||
623 | /* Procedure symbols. (XXX This should be done later) */ | |
624 | code_offset = fh->adr; | |
625 | for (s_idx = 0; s_idx < fh->cpd; s_idx++) { | |
626 | unsigned name, only_ext; | |
627 | ||
628 | pr = (PDR*)(IPDFIRST(hdr,fh)) + s_idx; | |
d747e0af | 629 | ecoff_swap_pdr_in (abfd, pr, pr); |
bd5635a1 RP |
630 | |
631 | /* Simple rule to find files linked "-x" */ | |
632 | only_ext = fh->rss == -1; | |
633 | if (only_ext) { | |
634 | if (pr->isym == -1) { | |
635 | /* static function */ | |
636 | sh = (SYMR*)-1; | |
637 | } else { | |
638 | /* external */ | |
639 | name = hdr->cbExtOffset + pr->isym * sizeof(EXTR); | |
640 | sh = &((EXTR*)name)->asym; | |
641 | } | |
642 | } else { | |
643 | /* Full symbols */ | |
644 | sh = (SYMR*)fh->isymBase + pr->isym; | |
645 | /* Included code ? */ | |
646 | if (s_idx == 0 && pr->adr != 0) | |
647 | code_offset -= pr->adr; | |
648 | } | |
649 | ||
650 | /* Turn index into a pointer */ | |
651 | pr->isym = (long)sh; | |
652 | ||
653 | /* Fix line numbers */ | |
654 | pr->cbLineOffset += fh->cbLineOffset; | |
655 | ||
656 | /* Relocate address */ | |
657 | if (!only_ext) | |
658 | pr->adr += code_offset; | |
659 | } | |
660 | } | |
661 | ||
d747e0af | 662 | /* External symbols: swap in, and fix string */ |
bd5635a1 RP |
663 | for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) { |
664 | esh = (EXTR*)(hdr->cbExtOffset) + s_idx; | |
d747e0af | 665 | ecoff_swap_ext_in (abfd, esh, esh); |
bd5635a1 RP |
666 | esh->asym.iss = esh->asym.iss + hdr->cbSsExtOffset; |
667 | } | |
668 | } | |
669 | ||
670 | ||
671 | /* Find a file descriptor given its index RF relative to a file CF */ | |
672 | ||
3eaebb75 SG |
673 | static FDR * |
674 | get_rfd (cf, rf) | |
675 | int cf, rf; | |
bd5635a1 RP |
676 | { |
677 | register FDR *f; | |
678 | ||
679 | f = (FDR *) (cur_hdr->cbFdOffset) + cf; | |
680 | /* Object files do not have the RFD table, all refs are absolute */ | |
681 | if (f->rfdBase == 0) | |
682 | return (FDR *) (cur_hdr->cbFdOffset) + rf; | |
683 | cf = *((pRFDT) f->rfdBase + rf); | |
684 | return (FDR *) (cur_hdr->cbFdOffset) + cf; | |
685 | } | |
686 | ||
687 | /* Return a safer print NAME for a file descriptor */ | |
688 | ||
3eaebb75 SG |
689 | static char * |
690 | fdr_name(name) | |
bd5635a1 RP |
691 | char *name; |
692 | { | |
693 | if (name == (char *) -1) | |
694 | return "<stripped file>"; | |
695 | if (UNSAFE_DATA_ADDR(name)) | |
696 | return "<NFY>"; | |
697 | return name; | |
698 | } | |
699 | ||
700 | ||
701 | /* Read in and parse the symtab of the file DESC. INCREMENTAL says | |
817bc7b8 | 702 | whether we are adding to the general symtab or not. |
b8c50f09 | 703 | FIXME: INCREMENTAL is currently always zero, though it should not be. */ |
bd5635a1 | 704 | |
d747e0af | 705 | static void |
817bc7b8 | 706 | read_mips_symtab (objfile) |
a048c8f5 | 707 | struct objfile *objfile; |
bd5635a1 | 708 | { |
b8c50f09 | 709 | CORE_ADDR end_of_text_seg; |
bd5635a1 | 710 | |
817bc7b8 | 711 | read_the_mips_symtab(objfile->obfd, &end_of_text_seg); |
bd5635a1 | 712 | |
a048c8f5 | 713 | parse_partial_symbols(end_of_text_seg, objfile); |
bd5635a1 | 714 | |
7e258d18 | 715 | #if 0 |
bd5635a1 RP |
716 | /* |
717 | * Check to make sure file was compiled with -g. | |
718 | * If not, warn the user of this limitation. | |
719 | */ | |
720 | if (compare_glevel(max_glevel, GLEVEL_2) < 0) { | |
721 | if (max_gdbinfo == 0) | |
c9bd6710 JG |
722 | printf ( |
723 | "\n%s not compiled with -g, debugging support is limited.\n", | |
a048c8f5 | 724 | objfile->name); |
c9bd6710 JG |
725 | printf( |
726 | "You should compile with -g2 or -g3 for best debugging support.\n"); | |
bd5635a1 RP |
727 | fflush(stdout); |
728 | } | |
7e258d18 | 729 | #endif |
bd5635a1 | 730 | } |
bd5635a1 RP |
731 | \f |
732 | /* Local utilities */ | |
733 | ||
bd5635a1 RP |
734 | /* Map of FDR indexes to partial symtabs */ |
735 | ||
d4ea2aba PB |
736 | struct pst_map { |
737 | struct partial_symtab *pst; /* the psymtab proper */ | |
738 | int n_globals; /* exported globals (external symbols) */ | |
739 | int globals_offset; /* cumulative */ | |
740 | }; | |
bd5635a1 RP |
741 | |
742 | ||
743 | /* Utility stack, used to nest procedures and blocks properly. | |
744 | It is a doubly linked list, to avoid too many alloc/free. | |
745 | Since we might need it quite a few times it is NOT deallocated | |
746 | after use. */ | |
747 | ||
748 | static struct parse_stack { | |
7e258d18 PB |
749 | struct parse_stack *next, *prev; |
750 | struct symtab *cur_st; /* Current symtab. */ | |
751 | struct block *cur_block; /* Block in it. */ | |
752 | int blocktype; /* What are we parsing. */ | |
753 | int maxsyms; /* Max symbols in this block. */ | |
754 | struct type *cur_type; /* Type we parse fields for. */ | |
755 | int cur_field; /* Field number in cur_type. */ | |
756 | int procadr; /* Start addres of this procedure */ | |
757 | int numargs; /* Its argument count */ | |
bd5635a1 RP |
758 | } *top_stack; /* Top stack ptr */ |
759 | ||
760 | ||
761 | /* Enter a new lexical context */ | |
762 | ||
4ad1963e SG |
763 | static void |
764 | push_parse_stack() | |
bd5635a1 RP |
765 | { |
766 | struct parse_stack *new; | |
767 | ||
768 | /* Reuse frames if possible */ | |
769 | if (top_stack && top_stack->prev) | |
770 | new = top_stack->prev; | |
771 | else | |
772 | new = (struct parse_stack *) xzalloc(sizeof(struct parse_stack)); | |
773 | /* Initialize new frame with previous content */ | |
774 | if (top_stack) { | |
775 | register struct parse_stack *prev = new->prev; | |
776 | ||
777 | *new = *top_stack; | |
778 | top_stack->prev = new; | |
779 | new->prev = prev; | |
780 | new->next = top_stack; | |
781 | } | |
782 | top_stack = new; | |
783 | } | |
784 | ||
785 | /* Exit a lexical context */ | |
786 | ||
4ad1963e SG |
787 | static void |
788 | pop_parse_stack() | |
bd5635a1 RP |
789 | { |
790 | if (!top_stack) | |
791 | return; | |
792 | if (top_stack->next) | |
793 | top_stack = top_stack->next; | |
794 | } | |
795 | ||
796 | ||
797 | /* Cross-references might be to things we haven't looked at | |
798 | yet, e.g. type references. To avoid too many type | |
799 | duplications we keep a quick fixup table, an array | |
800 | of lists of references indexed by file descriptor */ | |
801 | ||
7e258d18 PB |
802 | static struct mips_pending { |
803 | struct mips_pending *next; /* link */ | |
bd5635a1 RP |
804 | SYMR *s; /* the symbol */ |
805 | struct type *t; /* its partial type descriptor */ | |
806 | } **pending_list; | |
807 | ||
808 | ||
809 | /* Check whether we already saw symbol SH in file FH as undefined */ | |
810 | ||
4ad1963e SG |
811 | static struct mips_pending * |
812 | is_pending_symbol(fh, sh) | |
bd5635a1 RP |
813 | FDR *fh; |
814 | SYMR *sh; | |
815 | { | |
816 | int f_idx = fh - (FDR *) cur_hdr->cbFdOffset; | |
7e258d18 | 817 | register struct mips_pending *p; |
bd5635a1 RP |
818 | |
819 | /* Linear search is ok, list is typically no more than 10 deep */ | |
820 | for (p = pending_list[f_idx]; p; p = p->next) | |
821 | if (p->s == sh) | |
822 | break; | |
823 | return p; | |
824 | } | |
825 | ||
bd5635a1 RP |
826 | /* Add a new undef symbol SH of type T */ |
827 | ||
4ad1963e | 828 | static void |
bd5635a1 RP |
829 | add_pending(fh, sh, t) |
830 | FDR *fh; | |
831 | SYMR *sh; | |
832 | struct type *t; | |
833 | { | |
834 | int f_idx = fh - (FDR *) cur_hdr->cbFdOffset; | |
7e258d18 | 835 | struct mips_pending *p = is_pending_symbol(fh, sh); |
bd5635a1 RP |
836 | |
837 | /* Make sure we do not make duplicates */ | |
838 | if (!p) { | |
7e258d18 | 839 | p = (struct mips_pending *) xmalloc(sizeof(*p)); |
bd5635a1 RP |
840 | p->s = sh; |
841 | p->t = t; | |
842 | p->next = pending_list[f_idx]; | |
843 | pending_list[f_idx] = p; | |
844 | } | |
845 | sh->reserved = 1; /* for quick check */ | |
846 | } | |
847 | ||
848 | /* Throw away undef entries when done with file index F_IDX */ | |
84ffdec2 | 849 | /* FIXME -- storage leak. This is never called!!! --gnu */ |
bd5635a1 | 850 | |
4ad1963e | 851 | static void |
bd5635a1 | 852 | free_pending(f_idx) |
e10a3052 | 853 | int f_idx; |
bd5635a1 | 854 | { |
7e258d18 | 855 | register struct mips_pending *p, *q; |
bd5635a1 RP |
856 | |
857 | for (p = pending_list[f_idx]; p; p = q) { | |
858 | q = p->next; | |
84ffdec2 | 859 | free((PTR)p); |
bd5635a1 RP |
860 | } |
861 | pending_list[f_idx] = 0; | |
862 | } | |
863 | ||
4ad1963e | 864 | static char * |
bd49ef36 PB |
865 | prepend_tag_kind(tag_name, type_code) |
866 | char *tag_name; | |
e5578a31 | 867 | enum type_code type_code; |
bd49ef36 PB |
868 | { |
869 | char *prefix; | |
870 | char *result; | |
871 | switch (type_code) { | |
872 | case TYPE_CODE_ENUM: | |
873 | prefix = "enum "; | |
874 | break; | |
875 | case TYPE_CODE_STRUCT: | |
876 | prefix = "struct "; | |
877 | break; | |
878 | case TYPE_CODE_UNION: | |
879 | prefix = "union "; | |
880 | break; | |
881 | default: | |
882 | prefix = ""; | |
883 | } | |
884 | ||
d747e0af | 885 | result = (char*)obstack_alloc (¤t_objfile->symbol_obstack, |
bd49ef36 PB |
886 | strlen(prefix) + strlen(tag_name) + 1); |
887 | sprintf(result, "%s%s", prefix, tag_name); | |
888 | return result; | |
889 | } | |
890 | ||
bd5635a1 RP |
891 | \f |
892 | /* Parsing Routines proper. */ | |
893 | ||
894 | /* Parse a single symbol. Mostly just make up a GDB symbol for it. | |
895 | For blocks, procedures and types we open a new lexical context. | |
7e258d18 | 896 | This is basically just a big switch on the symbol's type. |
d747e0af MT |
897 | Argument AX is the base pointer of aux symbols for this file (fh->iauxBase). |
898 | BIGEND says whether aux symbols are big-endian or little-endian. | |
7e258d18 | 899 | Return count of SYMR's handled (normally one). */ |
bd5635a1 | 900 | |
7e258d18 | 901 | static int |
d747e0af | 902 | parse_symbol(sh, ax, bigend) |
bd5635a1 | 903 | SYMR *sh; |
d747e0af MT |
904 | union aux_ext *ax; |
905 | int bigend; | |
bd5635a1 | 906 | { |
7e258d18 | 907 | char *name; |
bd5635a1 RP |
908 | struct symbol *s; |
909 | struct block *b; | |
910 | struct type *t; | |
911 | struct field *f; | |
7e258d18 | 912 | int count = 1; |
bd5635a1 RP |
913 | /* When a symbol is cross-referenced from other files/symbols |
914 | we mark it explicitly */ | |
915 | int pend = (sh->reserved == 1); | |
916 | enum address_class class; | |
d747e0af | 917 | TIR tir; |
bd5635a1 RP |
918 | |
919 | switch (sh->st) { | |
920 | ||
921 | case stNil: | |
922 | break; | |
923 | ||
3eaebb75 | 924 | case stGlobal: /* external symbol, goes into global block */ |
bd5635a1 | 925 | class = LOC_STATIC; |
d219db01 JG |
926 | b = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st), |
927 | GLOBAL_BLOCK); | |
e10a3052 | 928 | s = new_symbol((char *)sh->iss); |
101f259c | 929 | SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value; |
bd5635a1 RP |
930 | goto data; |
931 | ||
3eaebb75 | 932 | case stStatic: /* static data, goes into current block. */ |
bd5635a1 RP |
933 | class = LOC_STATIC; |
934 | b = top_stack->cur_block; | |
e10a3052 | 935 | s = new_symbol((char *)sh->iss); |
101f259c | 936 | SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value; |
bd5635a1 RP |
937 | goto data; |
938 | ||
3eaebb75 | 939 | case stLocal: /* local variable, goes into current block */ |
bd5635a1 RP |
940 | if (sh->sc == scRegister) { |
941 | class = LOC_REGISTER; | |
942 | if (sh->value > 31) | |
bd49ef36 | 943 | sh->value += FP0_REGNUM-32; |
bd5635a1 RP |
944 | } else |
945 | class = LOC_LOCAL; | |
946 | b = top_stack->cur_block; | |
e10a3052 | 947 | s = new_symbol((char *)sh->iss); |
101f259c | 948 | SYMBOL_VALUE(s) = sh->value; |
bd5635a1 RP |
949 | |
950 | data: /* Common code for symbols describing data */ | |
bd5635a1 RP |
951 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; |
952 | SYMBOL_CLASS(s) = class; | |
953 | add_symbol(s, b); | |
954 | ||
955 | /* Type could be missing in a number of cases */ | |
956 | if (sh->sc == scUndefined || sh->sc == scNil || | |
957 | sh->index == 0xfffff) | |
958 | SYMBOL_TYPE(s) = builtin_type_int; /* undefined? */ | |
959 | else | |
d747e0af | 960 | SYMBOL_TYPE(s) = parse_type(ax + sh->index, 0, bigend); |
bd5635a1 | 961 | /* Value of a data symbol is its memory address */ |
bd5635a1 RP |
962 | break; |
963 | ||
3eaebb75 | 964 | case stParam: /* arg to procedure, goes into current block */ |
bd5635a1 RP |
965 | max_gdbinfo++; |
966 | top_stack->numargs++; | |
7e258d18 PB |
967 | |
968 | name = (char*)sh->iss; | |
969 | /* Special GNU C++ name. */ | |
970 | if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0) | |
817bc7b8 | 971 | name = "this"; /* FIXME, not alloc'd in obstack */ |
7e258d18 PB |
972 | s = new_symbol(name); |
973 | ||
bd5635a1 RP |
974 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; |
975 | if (sh->sc == scRegister) { | |
976 | SYMBOL_CLASS(s) = LOC_REGPARM; | |
977 | if (sh->value > 31) | |
bd49ef36 | 978 | sh->value += FP0_REGNUM-32; |
bd5635a1 RP |
979 | } else |
980 | SYMBOL_CLASS(s) = LOC_ARG; | |
981 | SYMBOL_VALUE(s) = sh->value; | |
d747e0af | 982 | SYMBOL_TYPE(s) = parse_type(ax + sh->index, 0, bigend); |
bd5635a1 | 983 | add_symbol(s, top_stack->cur_block); |
0c4d2cc2 JG |
984 | #if 0 |
985 | /* FIXME: This has not been tested. See dbxread.c */ | |
986 | /* Add the type of this parameter to the function/procedure | |
987 | type of this block. */ | |
988 | add_param_to_type(&top_stack->cur_block->function->type,s); | |
989 | #endif | |
bd5635a1 RP |
990 | break; |
991 | ||
3eaebb75 | 992 | case stLabel: /* label, goes into current block */ |
e10a3052 | 993 | s = new_symbol((char *)sh->iss); |
bd5635a1 RP |
994 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; /* so that it can be used */ |
995 | SYMBOL_CLASS(s) = LOC_LABEL; /* but not misused */ | |
101f259c | 996 | SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value; |
bd5635a1 RP |
997 | SYMBOL_TYPE(s) = builtin_type_int; |
998 | add_symbol(s, top_stack->cur_block); | |
999 | break; | |
1000 | ||
0c4d2cc2 | 1001 | case stProc: /* Procedure, usually goes into global block */ |
3eaebb75 | 1002 | case stStaticProc: /* Static procedure, goes into current block */ |
e10a3052 | 1003 | s = new_symbol((char *)sh->iss); |
bd5635a1 RP |
1004 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; |
1005 | SYMBOL_CLASS(s) = LOC_BLOCK; | |
1006 | /* Type of the return value */ | |
1007 | if (sh->sc == scUndefined || sh->sc == scNil) | |
1008 | t = builtin_type_int; | |
1009 | else | |
d747e0af | 1010 | t = parse_type(ax + sh->index + 1, 0, bigend); |
0c4d2cc2 JG |
1011 | b = top_stack->cur_block; |
1012 | if (sh->st == stProc) { | |
1013 | struct blockvector *bv = BLOCKVECTOR(top_stack->cur_st); | |
1014 | /* The next test should normally be true, | |
1015 | but provides a hook for nested functions | |
1016 | (which we don't want to make global). */ | |
1017 | if (b == BLOCKVECTOR_BLOCK(bv, STATIC_BLOCK)) | |
1018 | b = BLOCKVECTOR_BLOCK(bv, GLOBAL_BLOCK); | |
1019 | } | |
1020 | add_symbol(s, b); | |
bd5635a1 RP |
1021 | |
1022 | /* Make a type for the procedure itself */ | |
0c4d2cc2 JG |
1023 | #if 0 |
1024 | /* FIXME: This has not been tested yet! See dbxread.c */ | |
817bc7b8 JG |
1025 | /* Generate a template for the type of this function. The |
1026 | types of the arguments will be added as we read the symbol | |
0c4d2cc2 JG |
1027 | table. */ |
1028 | bcopy(SYMBOL_TYPE(s),lookup_function_type(t),sizeof(struct type)); | |
1029 | #else | |
bd5635a1 | 1030 | SYMBOL_TYPE(s) = lookup_function_type (t); |
0c4d2cc2 | 1031 | #endif |
bd5635a1 RP |
1032 | |
1033 | /* Create and enter a new lexical context */ | |
1034 | b = new_block(top_stack->maxsyms); | |
1035 | SYMBOL_BLOCK_VALUE(s) = b; | |
1036 | BLOCK_FUNCTION(b) = s; | |
1037 | BLOCK_START(b) = BLOCK_END(b) = sh->value; | |
1038 | BLOCK_SUPERBLOCK(b) = top_stack->cur_block; | |
1039 | add_block(b, top_stack->cur_st); | |
1040 | ||
1041 | /* Not if we only have partial info */ | |
1042 | if (sh->sc == scUndefined || sh->sc == scNil) | |
1043 | break; | |
1044 | ||
1045 | push_parse_stack(); | |
1046 | top_stack->cur_block = b; | |
1047 | top_stack->blocktype = sh->st; | |
1048 | top_stack->cur_type = SYMBOL_TYPE(s); | |
7e258d18 | 1049 | top_stack->cur_field = -1; |
bd5635a1 RP |
1050 | top_stack->procadr = sh->value; |
1051 | top_stack->numargs = 0; | |
1052 | ||
1053 | sh->value = (long) SYMBOL_TYPE(s); | |
1054 | break; | |
1055 | ||
817bc7b8 JG |
1056 | /* Beginning of code for structure, union, and enum definitions. |
1057 | They all share a common set of local variables, defined here. */ | |
1058 | { | |
1059 | enum type_code type_code; | |
1060 | SYMR *tsym; | |
1061 | int nfields; | |
1062 | long max_value; | |
1063 | struct field *f; | |
c55e6167 | 1064 | |
817bc7b8 JG |
1065 | case stStruct: /* Start a block defining a struct type */ |
1066 | type_code = TYPE_CODE_STRUCT; | |
1067 | goto structured_common; | |
1068 | ||
1069 | case stUnion: /* Start a block defining a union type */ | |
1070 | type_code = TYPE_CODE_UNION; | |
1071 | goto structured_common; | |
1072 | ||
1073 | case stEnum: /* Start a block defining an enum type */ | |
1074 | type_code = TYPE_CODE_ENUM; | |
1075 | goto structured_common; | |
c55e6167 | 1076 | |
bd5635a1 | 1077 | case stBlock: /* Either a lexical block, or some type */ |
817bc7b8 JG |
1078 | if (sh->sc != scInfo) |
1079 | goto case_stBlock_code; /* Lexical block */ | |
1080 | ||
1081 | type_code = TYPE_CODE_UNDEF; /* We have a type. */ | |
1082 | ||
1083 | /* Common code for handling struct, union, enum, and/or as-yet- | |
1084 | unknown-type blocks of info about structured data. `type_code' | |
1085 | has been set to the proper TYPE_CODE, if we know it. */ | |
1086 | structured_common: | |
bd5635a1 RP |
1087 | push_parse_stack(); |
1088 | top_stack->blocktype = stBlock; | |
7e258d18 | 1089 | |
817bc7b8 JG |
1090 | s = new_symbol((char *)sh->iss); |
1091 | SYMBOL_NAMESPACE(s) = STRUCT_NAMESPACE; | |
1092 | SYMBOL_CLASS(s) = LOC_TYPEDEF; | |
1093 | SYMBOL_VALUE(s) = 0; | |
1094 | add_symbol(s, top_stack->cur_block); | |
1095 | ||
1096 | /* First count the number of fields and the highest value. */ | |
1097 | nfields = 0; | |
1098 | max_value = 0; | |
1099 | for (tsym = sh+1; tsym->st != stEnd; tsym++) | |
1100 | { | |
1101 | if (tsym->st == stMember) { | |
1102 | if (nfields == 0 && type_code == TYPE_CODE_UNDEF) | |
1103 | /* If the type of the member is Nil (or Void), | |
1104 | assume the tag is an enumeration. */ | |
1105 | if (tsym->index == indexNil) | |
1106 | type_code = TYPE_CODE_ENUM; | |
1107 | else { | |
1108 | ecoff_swap_tir_in (bigend, | |
1109 | &ax[tsym->index].a_ti, | |
1110 | &tir); | |
1111 | if (tir.bt == btNil || tir.bt == btVoid) | |
c55e6167 | 1112 | type_code = TYPE_CODE_ENUM; |
817bc7b8 JG |
1113 | } |
1114 | nfields++; | |
1115 | if (tsym->value > max_value) | |
1116 | max_value = tsym->value; | |
1117 | } | |
1118 | else if (tsym->st == stBlock | |
1119 | || tsym->st == stUnion | |
1120 | || tsym->st == stEnum | |
1121 | || tsym->st == stStruct | |
1122 | || tsym->st == stParsed) { | |
1123 | if (tsym->sc == scVariant) ; /*UNIMPLEMENTED*/ | |
1124 | if (tsym->index != 0) | |
1125 | tsym = ((SYMR*)cur_fdr->isymBase) | |
1126 | + tsym->index-1; | |
1127 | } | |
1128 | else complain (&block_member_complaint, (char *)tsym->st); | |
1129 | } | |
1130 | ||
1131 | /* In an stBlock, there is no way to distinguish structs, | |
1132 | unions, and enums at this point. This is a bug in the | |
1133 | original design (that has been fixed with the | |
1134 | recent addition of the stStruct, stUnion, and stEnum | |
1135 | symbol types.) The way you can tell is if/when you | |
1136 | see a variable or field of that type. In that case | |
1137 | the variable's type (in the AUX table) says if the | |
1138 | type is struct, union, or enum, | |
1139 | and points back to the stBlock here. | |
1140 | So you can patch the tag kind up later - but only | |
1141 | if there actually is a variable or field of that type. | |
1142 | ||
1143 | So until we know for sure, we will guess at this point. | |
1144 | The heuristic is: | |
1145 | If the first member has index==indexNil or a void type, | |
1146 | assume we have an enumeration. | |
1147 | Otherwise, if there is more than one member, and all | |
1148 | the members have offset 0, assume we have a union. | |
1149 | Otherwise, assume we have a struct. | |
1150 | ||
1151 | The heuristic could guess wrong in the case of | |
1152 | of an enumeration with no members or a union | |
1153 | with one (or zero) members, or when all except the | |
1154 | last field of a struct have width zero. | |
1155 | These are uncommon and/or illegal situations, and | |
1156 | in any case guessing wrong probably doesn't matter much. | |
1157 | ||
1158 | But if we later do find out we were wrong, | |
1159 | we fixup the tag kind. Members of an enumeration | |
1160 | must be handled differently from struct/union fields, | |
1161 | and that is harder to patch up, but luckily we | |
1162 | shouldn't need to. (If there are any enumeration | |
1163 | members, we can tell for sure it's an enum here.) */ | |
1164 | ||
1165 | if (type_code == TYPE_CODE_UNDEF) | |
1166 | if (nfields > 1 && max_value == 0) | |
1167 | type_code = TYPE_CODE_UNION; | |
bd49ef36 | 1168 | else |
817bc7b8 JG |
1169 | type_code = TYPE_CODE_STRUCT; |
1170 | ||
1171 | /* If this type was expected, use its partial definition */ | |
1172 | if (pend) | |
1173 | t = is_pending_symbol(cur_fdr, sh)->t; | |
1174 | else | |
1175 | t = new_type(prepend_tag_kind((char *)sh->iss, | |
1176 | type_code)); | |
1177 | ||
1178 | TYPE_CODE(t) = type_code; | |
1179 | TYPE_LENGTH(t) = sh->value; | |
1180 | TYPE_NFIELDS(t) = nfields; | |
1181 | TYPE_FIELDS(t) = f = (struct field*) | |
1182 | obstack_alloc (¤t_objfile -> type_obstack, | |
1183 | nfields * sizeof (struct field)); | |
1184 | ||
1185 | if (type_code == TYPE_CODE_ENUM) { | |
1186 | /* This is a non-empty enum. */ | |
1187 | for (tsym = sh + 1; tsym->st == stMember; tsym++) { | |
1188 | struct symbol *enum_sym; | |
1189 | f->bitpos = tsym->value; | |
1190 | f->type = t; | |
1191 | f->name = (char*)tsym->iss; | |
1192 | f->bitsize = 0; | |
1193 | ||
1194 | enum_sym = (struct symbol *) | |
1195 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1196 | sizeof (struct symbol)); | |
1197 | memset ((PTR)enum_sym, 0, sizeof (struct symbol)); | |
1198 | SYMBOL_NAME (enum_sym) = f->name; | |
1199 | SYMBOL_CLASS (enum_sym) = LOC_CONST; | |
1200 | SYMBOL_TYPE (enum_sym) = t; | |
1201 | SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE; | |
1202 | SYMBOL_VALUE (enum_sym) = tsym->value; | |
1203 | add_symbol(enum_sym, top_stack->cur_block); | |
1204 | ||
1205 | /* Skip the stMembers that we've handled. */ | |
1206 | count++; | |
1207 | f++; | |
7e258d18 | 1208 | } |
bd5635a1 | 1209 | } |
817bc7b8 JG |
1210 | SYMBOL_TYPE(s) = t; |
1211 | /* make this the current type */ | |
1212 | top_stack->cur_type = t; | |
1213 | top_stack->cur_field = 0; | |
1214 | /* Mark that symbol has a type, and say which one */ | |
1215 | sh->value = (long) t; | |
1216 | break; | |
1217 | ||
1218 | /* End of local variables shared by struct, union, enum, and | |
1219 | block (as yet unknown struct/union/enum) processing. */ | |
1220 | } | |
1221 | ||
1222 | case_stBlock_code: | |
1223 | /* beginnning of (code) block. Value of symbol | |
1224 | is the displacement from procedure start */ | |
1225 | push_parse_stack(); | |
1226 | top_stack->blocktype = stBlock; | |
1227 | b = new_block(top_stack->maxsyms); | |
1228 | BLOCK_START(b) = sh->value + top_stack->procadr; | |
1229 | BLOCK_SUPERBLOCK(b) = top_stack->cur_block; | |
1230 | top_stack->cur_block = b; | |
1231 | add_block(b, top_stack->cur_st); | |
bd5635a1 RP |
1232 | break; |
1233 | ||
1234 | case stEnd: /* end (of anything) */ | |
1235 | if (sh->sc == scInfo) { | |
1236 | /* Finished with type */ | |
1237 | top_stack->cur_type = 0; | |
1238 | } else if (sh->sc == scText && | |
1239 | (top_stack->blocktype == stProc || | |
1240 | top_stack->blocktype == stStaticProc)) { | |
1241 | /* Finished with procedure */ | |
1242 | struct blockvector *bv = BLOCKVECTOR(top_stack->cur_st); | |
d1bb1d41 | 1243 | struct mips_extra_func_info *e; |
bd5635a1 RP |
1244 | struct block *b; |
1245 | int i; | |
1246 | ||
1247 | BLOCK_END(top_stack->cur_block) += sh->value; /* size */ | |
d1bb1d41 SG |
1248 | |
1249 | /* Make up special symbol to contain procedure specific | |
1250 | info */ | |
1251 | s = new_symbol(".gdbinfo."); | |
1252 | SYMBOL_NAMESPACE(s) = LABEL_NAMESPACE; | |
1253 | SYMBOL_CLASS(s) = LOC_CONST; | |
1254 | SYMBOL_TYPE(s) = builtin_type_void; | |
1255 | e = (struct mips_extra_func_info *) | |
1256 | obstack_alloc (¤t_objfile->symbol_obstack, | |
1257 | sizeof (struct mips_extra_func_info)); | |
1258 | SYMBOL_VALUE(s) = (int)e; | |
1259 | e->numargs = top_stack->numargs; | |
1260 | add_symbol(s, top_stack->cur_block); | |
1261 | ||
bd5635a1 RP |
1262 | /* Reallocate symbols, saving memory */ |
1263 | b = shrink_block(top_stack->cur_block, top_stack->cur_st); | |
1264 | ||
1265 | /* f77 emits proc-level with address bounds==[0,0], | |
1266 | So look for such child blocks, and patch them. */ | |
1267 | for (i = 0; i < BLOCKVECTOR_NBLOCKS(bv); i++) { | |
1268 | struct block *b_bad = BLOCKVECTOR_BLOCK(bv,i); | |
1269 | if (BLOCK_SUPERBLOCK(b_bad) == b | |
1270 | && BLOCK_START(b_bad) == top_stack->procadr | |
1271 | && BLOCK_END(b_bad) == top_stack->procadr) { | |
1272 | BLOCK_START(b_bad) = BLOCK_START(b); | |
1273 | BLOCK_END(b_bad) = BLOCK_END(b); | |
1274 | } | |
1275 | } | |
1276 | } else if (sh->sc == scText && top_stack->blocktype == stBlock) { | |
1277 | /* End of (code) block. The value of the symbol | |
1278 | is the displacement from the procedure`s start | |
1279 | address of the end of this block. */ | |
1280 | BLOCK_END(top_stack->cur_block) = sh->value + top_stack->procadr; | |
1281 | (void) shrink_block(top_stack->cur_block, top_stack->cur_st); | |
817bc7b8 JG |
1282 | } else complain (&stEnd_complaint, (char *)sh->sc); |
1283 | ||
bd5635a1 RP |
1284 | pop_parse_stack(); /* restore previous lexical context */ |
1285 | break; | |
1286 | ||
7e258d18 PB |
1287 | case stMember: /* member of struct or union */ |
1288 | f = &TYPE_FIELDS(top_stack->cur_type)[top_stack->cur_field++]; | |
1289 | f->name = (char*)sh->iss; | |
bd5635a1 | 1290 | f->bitpos = sh->value; |
7e258d18 | 1291 | f->bitsize = 0; |
d747e0af | 1292 | f->type = parse_type(ax + sh->index, &f->bitsize, bigend); |
bd5635a1 RP |
1293 | break; |
1294 | ||
1295 | case stTypedef: /* type definition */ | |
e10a3052 | 1296 | s = new_symbol((char *)sh->iss); |
bd5635a1 RP |
1297 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; |
1298 | SYMBOL_CLASS(s) = LOC_TYPEDEF; | |
1299 | SYMBOL_BLOCK_VALUE(s) = top_stack->cur_block; | |
1300 | add_symbol(s, top_stack->cur_block); | |
d747e0af | 1301 | SYMBOL_TYPE(s) = parse_type(ax + sh->index, 0, bigend); |
bd5635a1 RP |
1302 | sh->value = (long) SYMBOL_TYPE(s); |
1303 | break; | |
1304 | ||
1305 | case stFile: /* file name */ | |
1306 | push_parse_stack(); | |
1307 | top_stack->blocktype = sh->st; | |
1308 | break; | |
1309 | ||
1310 | /* I`ve never seen these for C */ | |
1311 | case stRegReloc: | |
1312 | break; /* register relocation */ | |
1313 | case stForward: | |
1314 | break; /* forwarding address */ | |
1315 | case stConstant: | |
1316 | break; /* constant */ | |
1317 | default: | |
817bc7b8 JG |
1318 | complain(&unknown_mips_symtype_complaint, (char *)sh->st); |
1319 | break; | |
bd5635a1 RP |
1320 | } |
1321 | sh->st = stParsed; | |
7e258d18 | 1322 | return count; |
bd5635a1 RP |
1323 | } |
1324 | ||
d747e0af MT |
1325 | /* Parse the type information provided in the raw AX entries for |
1326 | the symbol SH. Return the bitfield size in BS, in case. | |
1327 | We must byte-swap the AX entries before we use them; BIGEND says whether | |
1328 | they are big-endian or little-endian (from fh->fBigendian). */ | |
bd5635a1 | 1329 | |
84ffdec2 JG |
1330 | static struct type * |
1331 | parse_type(ax, bs, bigend) | |
d747e0af | 1332 | union aux_ext *ax; |
bd5635a1 | 1333 | int *bs; |
d747e0af | 1334 | int bigend; |
bd5635a1 RP |
1335 | { |
1336 | /* Null entries in this map are treated specially */ | |
1337 | static struct type **map_bt[] = | |
1338 | { | |
1339 | &builtin_type_void, /* btNil */ | |
1340 | 0, /* btAdr */ | |
1341 | &builtin_type_char, /* btChar */ | |
1342 | &builtin_type_unsigned_char, /* btUChar */ | |
1343 | &builtin_type_short, /* btShort */ | |
1344 | &builtin_type_unsigned_short, /* btUShort */ | |
1345 | &builtin_type_int, /* btInt */ | |
1346 | &builtin_type_unsigned_int, /* btUInt */ | |
1347 | &builtin_type_long, /* btLong */ | |
1348 | &builtin_type_unsigned_long, /* btULong */ | |
1349 | &builtin_type_float, /* btFloat */ | |
1350 | &builtin_type_double, /* btDouble */ | |
1351 | 0, /* btStruct */ | |
1352 | 0, /* btUnion */ | |
1353 | 0, /* btEnum */ | |
1354 | 0, /* btTypedef */ | |
1355 | 0, /* btRange */ | |
1356 | 0, /* btSet */ | |
1357 | &builtin_type_complex, /* btComplex */ | |
1358 | &builtin_type_double_complex, /* btDComplex */ | |
1359 | 0, /* btIndirect */ | |
1360 | &builtin_type_fixed_dec, /* btFixedDec */ | |
1361 | &builtin_type_float_dec, /* btFloatDec */ | |
1362 | &builtin_type_string, /* btString */ | |
1363 | 0, /* btBit */ | |
1364 | 0, /* btPicture */ | |
1365 | &builtin_type_void, /* btVoid */ | |
817bc7b8 JG |
1366 | &builtin_type_long_long, /* btLongLong */ |
1367 | &builtin_type_unsigned_long_long,/* btULongLong */ | |
bd5635a1 RP |
1368 | }; |
1369 | ||
d747e0af | 1370 | TIR t[1]; |
7e258d18 | 1371 | struct type *tp = 0; |
f1d77e90 | 1372 | char *fmt; |
d747e0af | 1373 | union aux_ext *tax; |
e5578a31 | 1374 | enum type_code type_code; |
bd5635a1 | 1375 | |
d747e0af MT |
1376 | /* Use aux as a type information record, map its basic type. */ |
1377 | tax = ax; | |
1378 | ecoff_swap_tir_in (bigend, &tax->a_ti, t); | |
f1d77e90 | 1379 | if (t->bt > (sizeof (map_bt)/sizeof (*map_bt))) { |
41bd448e | 1380 | complain (&basic_type_complaint, (char *)t->bt); |
bd5635a1 RP |
1381 | return builtin_type_int; |
1382 | } | |
52bd2c22 | 1383 | if (map_bt[t->bt]) { |
bd5635a1 | 1384 | tp = *map_bt[t->bt]; |
f1d77e90 | 1385 | fmt = "%s"; |
52bd2c22 | 1386 | } else { |
7e258d18 | 1387 | tp = NULL; |
f1d77e90 | 1388 | /* Cannot use builtin types -- build our own */ |
bd5635a1 RP |
1389 | switch (t->bt) { |
1390 | case btAdr: | |
f1d77e90 JG |
1391 | tp = lookup_pointer_type (builtin_type_void); |
1392 | fmt = "%s"; | |
bd5635a1 RP |
1393 | break; |
1394 | case btStruct: | |
7e258d18 | 1395 | type_code = TYPE_CODE_STRUCT; |
bd5635a1 RP |
1396 | fmt = "struct %s"; |
1397 | break; | |
1398 | case btUnion: | |
7e258d18 | 1399 | type_code = TYPE_CODE_UNION; |
bd5635a1 RP |
1400 | fmt = "union %s"; |
1401 | break; | |
1402 | case btEnum: | |
7e258d18 | 1403 | type_code = TYPE_CODE_ENUM; |
bd5635a1 RP |
1404 | fmt = "enum %s"; |
1405 | break; | |
1406 | case btRange: | |
7e258d18 | 1407 | type_code = TYPE_CODE_RANGE; |
f1d77e90 | 1408 | fmt = "%s"; |
bd5635a1 RP |
1409 | break; |
1410 | case btSet: | |
7e258d18 | 1411 | type_code = TYPE_CODE_SET; |
bd5635a1 RP |
1412 | fmt = "set %s"; |
1413 | break; | |
7e258d18 | 1414 | case btTypedef: |
f1d77e90 | 1415 | default: |
41bd448e | 1416 | complain (&basic_type_complaint, (char *)t->bt); |
f1d77e90 | 1417 | return builtin_type_int; |
bd5635a1 RP |
1418 | } |
1419 | } | |
1420 | ||
d747e0af | 1421 | /* Skip over any further type qualifiers (FIXME). */ |
bd5635a1 RP |
1422 | if (t->continued) { |
1423 | /* This is the way it would work if the compiler worked */ | |
d747e0af MT |
1424 | TIR t1[1]; |
1425 | do { | |
bd5635a1 | 1426 | ax++; |
d747e0af MT |
1427 | ecoff_swap_tir_in (bigend, ax, t1); |
1428 | } while (t1->continued); | |
bd5635a1 RP |
1429 | } |
1430 | ||
d747e0af MT |
1431 | /* Move on to next aux */ |
1432 | ax++; | |
1433 | ||
bd5635a1 | 1434 | if (t->fBitfield) { |
d747e0af | 1435 | *bs = AUX_GET_WIDTH (bigend, ax); |
7e258d18 | 1436 | ax++; |
bd5635a1 RP |
1437 | } |
1438 | ||
1439 | /* All these types really point to some (common) MIPS type | |
1440 | definition, and only the type-qualifiers fully identify | |
7e258d18 | 1441 | them. We'll make the same effort at sharing. */ |
bd5635a1 RP |
1442 | if (t->bt == btIndirect || |
1443 | t->bt == btStruct || | |
1444 | t->bt == btUnion || | |
1445 | t->bt == btEnum || | |
1446 | t->bt == btTypedef || | |
1447 | t->bt == btRange || | |
1448 | t->bt == btSet) { | |
1449 | char name[256], *pn; | |
1450 | ||
1451 | /* Try to cross reference this type */ | |
d747e0af | 1452 | ax += cross_ref(ax, &tp, type_code, &pn, bigend); |
7e258d18 PB |
1453 | /* reading .o file ? */ |
1454 | if (UNSAFE_DATA_ADDR(tp)) | |
021959e2 | 1455 | tp = init_type(type_code, 0, 0, 0, (struct objfile *) NULL); |
bd5635a1 RP |
1456 | /* SOMEONE OUGHT TO FIX DBXREAD TO DROP "STRUCT" */ |
1457 | sprintf(name, fmt, pn); | |
1458 | ||
7e258d18 PB |
1459 | /* Usually, TYPE_CODE(tp) is already type_code. The main |
1460 | exception is if we guessed wrong re struct/union/enum. */ | |
c55e6167 | 1461 | if (TYPE_CODE(tp) != type_code) { |
817bc7b8 | 1462 | complain (&bad_tag_guess_complaint, name); |
c55e6167 JG |
1463 | TYPE_CODE(tp) = type_code; |
1464 | } | |
bd49ef36 | 1465 | if (TYPE_NAME(tp) == NULL || strcmp(TYPE_NAME(tp), name) != 0) |
021959e2 JG |
1466 | TYPE_NAME(tp) = obsavestring(name, strlen(name), |
1467 | ¤t_objfile -> type_obstack); | |
bd5635a1 RP |
1468 | } |
1469 | ||
1470 | /* Deal with range types */ | |
1471 | if (t->bt == btRange) { | |
7e258d18 PB |
1472 | TYPE_NFIELDS (tp) = 2; |
1473 | TYPE_FIELDS (tp) = | |
021959e2 JG |
1474 | (struct field *) obstack_alloc (¤t_objfile -> type_obstack, |
1475 | 2 * sizeof (struct field)); | |
1476 | TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"), | |
1477 | ¤t_objfile -> type_obstack); | |
d747e0af | 1478 | TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax); |
bd5635a1 | 1479 | ax++; |
021959e2 JG |
1480 | TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"), |
1481 | ¤t_objfile -> type_obstack); | |
d747e0af | 1482 | TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax); |
bd5635a1 RP |
1483 | ax++; |
1484 | } | |
1485 | ||
1486 | /* Parse all the type qualifiers now. If there are more | |
1487 | than 6 the game will continue in the next aux */ | |
1488 | ||
1489 | #define PARSE_TQ(tq) \ | |
d747e0af | 1490 | if (t->tq != tqNil) ax += upgrade_type(&tp, t->tq, ax, bigend); |
bd5635a1 RP |
1491 | |
1492 | again: PARSE_TQ(tq0); | |
1493 | PARSE_TQ(tq1); | |
1494 | PARSE_TQ(tq2); | |
1495 | PARSE_TQ(tq3); | |
1496 | PARSE_TQ(tq4); | |
1497 | PARSE_TQ(tq5); | |
1498 | #undef PARSE_TQ | |
1499 | ||
1500 | if (t->continued) { | |
d747e0af MT |
1501 | tax++; |
1502 | ecoff_swap_tir_in (bigend, &tax->a_ti, t); | |
bd5635a1 RP |
1503 | goto again; |
1504 | } | |
1505 | return tp; | |
1506 | } | |
1507 | ||
1508 | /* Make up a complex type from a basic one. Type is passed by | |
1509 | reference in TPP and side-effected as necessary. The type | |
1510 | qualifier TQ says how to handle the aux symbols at AX for | |
d747e0af MT |
1511 | the symbol SX we are currently analyzing. BIGEND says whether |
1512 | aux symbols are big-endian or little-endian. | |
bd5635a1 RP |
1513 | Returns the number of aux symbols we parsed. */ |
1514 | ||
3eaebb75 | 1515 | static int |
d747e0af MT |
1516 | upgrade_type(tpp, tq, ax, bigend) |
1517 | struct type **tpp; | |
84ffdec2 | 1518 | int tq; |
d747e0af MT |
1519 | union aux_ext *ax; |
1520 | int bigend; | |
bd5635a1 | 1521 | { |
d747e0af MT |
1522 | int off; |
1523 | struct type *t; | |
bd5635a1 | 1524 | |
3eaebb75 SG |
1525 | /* Used in array processing */ |
1526 | int rf, id; | |
1527 | FDR *fh; | |
1528 | struct field *f; | |
3eaebb75 | 1529 | int lower, upper; |
d747e0af | 1530 | RNDXR rndx; |
3eaebb75 SG |
1531 | |
1532 | switch (tq) { | |
1533 | case tqPtr: | |
bd5635a1 | 1534 | t = lookup_pointer_type (*tpp); |
3eaebb75 SG |
1535 | *tpp = t; |
1536 | return 0; | |
1537 | ||
1538 | case tqProc: | |
bd5635a1 | 1539 | t = lookup_function_type (*tpp); |
3eaebb75 SG |
1540 | *tpp = t; |
1541 | return 0; | |
bd5635a1 | 1542 | |
3eaebb75 SG |
1543 | case tqArray: |
1544 | off = 0; | |
021959e2 | 1545 | t = init_type(TYPE_CODE_ARRAY, 0, 0, 0, (struct objfile *) NULL); |
bd5635a1 RP |
1546 | TYPE_TARGET_TYPE(t) = *tpp; |
1547 | ||
3eaebb75 | 1548 | /* Determine and record the domain type (type of index) */ |
d747e0af MT |
1549 | ecoff_swap_rndx_in (bigend, ax, &rndx); |
1550 | id = rndx.index; | |
1551 | rf = rndx.rfd; | |
3eaebb75 | 1552 | if (rf == 0xfff) { |
d747e0af MT |
1553 | ax++; |
1554 | rf = AUX_GET_ISYM (bigend, ax); | |
3eaebb75 SG |
1555 | off++; |
1556 | } | |
bd5635a1 | 1557 | fh = get_rfd(cur_fd, rf); |
7e258d18 PB |
1558 | |
1559 | /* Fields are kept in an array */ | |
1560 | /* FIXME - Memory leak! */ | |
1561 | if (TYPE_NFIELDS(t)) | |
1562 | TYPE_FIELDS(t) = (struct field*) | |
84ffdec2 | 1563 | xrealloc((PTR) TYPE_FIELDS(t), |
7e258d18 PB |
1564 | (TYPE_NFIELDS(t)+1) * sizeof(struct field)); |
1565 | else | |
1566 | TYPE_FIELDS(t) = (struct field*) | |
1567 | xzalloc(sizeof(struct field)); | |
1568 | f = &(TYPE_FIELD(t,TYPE_NFIELDS(t))); | |
1569 | TYPE_NFIELDS(t)++; | |
84ffdec2 | 1570 | memset((PTR)f, 0, sizeof(struct field)); |
7e258d18 | 1571 | |
84ffdec2 | 1572 | /* XXX */ f->type = parse_type(id + (union aux_ext *)fh->iauxBase, |
d747e0af | 1573 | &f->bitsize, bigend); |
bd5635a1 | 1574 | |
d747e0af MT |
1575 | ax++; |
1576 | lower = AUX_GET_DNLOW (bigend, ax); | |
1577 | ax++; | |
1578 | upper = AUX_GET_DNHIGH (bigend, ax); | |
1579 | ax++; | |
1580 | rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */ | |
3eaebb75 SG |
1581 | |
1582 | /* Check whether supplied array element bit size matches | |
1583 | the known size of the element type. If this complaint | |
1584 | ends up not happening, we can remove this code. It's | |
1585 | here because we aren't sure we understand this *&%&$ | |
1586 | symbol format. */ | |
bd5635a1 | 1587 | id = TYPE_LENGTH(TYPE_TARGET_TYPE(t)) << 3; /* bitsize */ |
bd5635a1 RP |
1588 | if (id == 0) { |
1589 | /* Most likely an undefined type */ | |
3eaebb75 | 1590 | id = rf; |
bd5635a1 RP |
1591 | TYPE_LENGTH(TYPE_TARGET_TYPE(t)) = id >> 3; |
1592 | } | |
3eaebb75 | 1593 | if (id != rf) |
41bd448e | 1594 | complain (&array_bitsize_complaint, (char *)rf); |
3eaebb75 SG |
1595 | |
1596 | TYPE_LENGTH(t) = (upper < 0) ? 0 : | |
1597 | (upper - lower + 1) * (rf >> 3); | |
1598 | *tpp = t; | |
1599 | return 4 + off; | |
bd5635a1 | 1600 | |
3eaebb75 SG |
1601 | case tqVol: |
1602 | /* Volatile -- currently ignored */ | |
1603 | return 0; | |
1604 | ||
817bc7b8 JG |
1605 | case tqConst: |
1606 | /* Const -- currently ignored */ | |
1607 | return 0; | |
1608 | ||
3eaebb75 | 1609 | default: |
41bd448e | 1610 | complain (&unknown_type_qual_complaint, (char *)tq); |
3eaebb75 SG |
1611 | return 0; |
1612 | } | |
bd5635a1 RP |
1613 | } |
1614 | ||
1615 | ||
1616 | /* Parse a procedure descriptor record PR. Note that the procedure | |
817bc7b8 JG |
1617 | is parsed _after_ the local symbols, now we just insert the extra |
1618 | information we need into a special ".gdbinfo." symbol that has already | |
1619 | been placed in the procedure's main block. Note also that images that | |
bd5635a1 RP |
1620 | have been partially stripped (ld -x) have been deprived |
1621 | of local symbols, and we have to cope with them here. | |
1622 | The procedure's code ends at BOUND */ | |
1623 | ||
d1bb1d41 | 1624 | static void |
817bc7b8 | 1625 | parse_procedure (pr, bound, have_stabs) |
bd5635a1 | 1626 | PDR *pr; |
e10a3052 | 1627 | int bound; |
ad142b8e | 1628 | int have_stabs; |
bd5635a1 | 1629 | { |
817bc7b8 JG |
1630 | struct symbol *s, *i; |
1631 | SYMR *sh = (SYMR*)pr->isym; | |
1632 | struct block *b; | |
1633 | struct mips_extra_func_info *e; | |
1634 | char name[100]; | |
1635 | char *sh_name; | |
1636 | ||
1637 | /* Static procedure at address pr->adr. Sigh. */ | |
1638 | if (sh == (SYMR*)-1) { | |
1639 | complain (&pdr_static_symbol_complaint, (char *)pr->adr); | |
1640 | return; | |
1641 | } | |
1642 | sh_name = (char*)sh->iss; | |
1643 | if (have_stabs) | |
1644 | s = lookup_symbol(sh_name, NULL, VAR_NAMESPACE, 0, NULL); | |
1645 | else | |
1646 | s = mylookup_symbol(sh_name, top_stack->cur_block, | |
1647 | VAR_NAMESPACE, LOC_BLOCK); | |
1648 | ||
1649 | if (s != 0) { | |
1650 | b = SYMBOL_BLOCK_VALUE(s); | |
1651 | } else { | |
1652 | complain (&pdr_for_nonsymbol_complaint, sh_name); | |
b303297a SG |
1653 | #if 1 |
1654 | return; | |
1655 | #else | |
817bc7b8 JG |
1656 | /* FIXME -- delete. We can't do symbol allocation now; it's all done. */ |
1657 | s = new_symbol(sh_name); | |
1658 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; | |
1659 | SYMBOL_CLASS(s) = LOC_BLOCK; | |
1660 | /* Donno its type, hope int is ok */ | |
1661 | SYMBOL_TYPE(s) = lookup_function_type (builtin_type_int); | |
1662 | add_symbol(s, top_stack->cur_block); | |
1663 | /* Wont have symbols for this one */ | |
1664 | b = new_block(2); | |
1665 | SYMBOL_BLOCK_VALUE(s) = b; | |
1666 | BLOCK_FUNCTION(b) = s; | |
1667 | BLOCK_START(b) = pr->adr; | |
1668 | BLOCK_END(b) = bound; | |
1669 | BLOCK_SUPERBLOCK(b) = top_stack->cur_block; | |
1670 | add_block(b, top_stack->cur_st); | |
1671 | #endif | |
1672 | } | |
d1bb1d41 | 1673 | |
817bc7b8 | 1674 | i = mylookup_symbol(".gdbinfo.", b, LABEL_NAMESPACE, LOC_CONST); |
d1bb1d41 | 1675 | |
817bc7b8 JG |
1676 | if (i) |
1677 | { | |
1678 | e = (struct mips_extra_func_info *)SYMBOL_VALUE(i); | |
1679 | e->pdr = *pr; | |
1680 | e->pdr.isym = (long)s; | |
1681 | } | |
bd5635a1 RP |
1682 | } |
1683 | ||
1684 | /* Parse the external symbol ES. Just call parse_symbol() after | |
1685 | making sure we know where the aux are for it. For procedures, | |
1686 | parsing of the PDRs has already provided all the needed | |
1687 | information, we only parse them if SKIP_PROCEDURES is false, | |
101f259c | 1688 | and only if this causes no symbol duplication. |
d747e0af | 1689 | BIGEND says whether aux entries are big-endian or little-endian. |
101f259c JG |
1690 | |
1691 | This routine clobbers top_stack->cur_block and ->cur_st. */ | |
bd5635a1 | 1692 | |
4ad1963e | 1693 | static void |
d747e0af | 1694 | parse_external(es, skip_procedures, bigend) |
bd5635a1 | 1695 | EXTR *es; |
d747e0af MT |
1696 | int skip_procedures; |
1697 | int bigend; | |
bd5635a1 | 1698 | { |
d747e0af | 1699 | union aux_ext *ax; |
bd5635a1 RP |
1700 | |
1701 | if (es->ifd != ifdNil) { | |
1702 | cur_fd = es->ifd; | |
1703 | cur_fdr = (FDR*)(cur_hdr->cbFdOffset) + cur_fd; | |
d747e0af | 1704 | ax = (union aux_ext *)cur_fdr->iauxBase; |
bd5635a1 RP |
1705 | } else { |
1706 | cur_fdr = (FDR*)(cur_hdr->cbFdOffset); | |
1707 | ax = 0; | |
1708 | } | |
bd5635a1 RP |
1709 | |
1710 | /* Reading .o files */ | |
1711 | if (es->asym.sc == scUndefined || es->asym.sc == scNil) { | |
1712 | char *what; | |
1713 | switch (es->asym.st) { | |
1714 | case stStaticProc: | |
3eaebb75 SG |
1715 | case stProc: what = "procedure"; n_undef_procs++; break; |
1716 | case stGlobal: what = "variable"; n_undef_vars++; break; | |
1717 | case stLabel: what = "label"; n_undef_labels++; break; | |
1718 | default : what = "symbol"; break; | |
bd5635a1 RP |
1719 | } |
1720 | n_undef_symbols++; | |
817bc7b8 | 1721 | /* FIXME: Turn this into a complaint? */ |
bd5635a1 | 1722 | if (info_verbose) |
817bc7b8 JG |
1723 | printf_filtered("Warning: %s `%s' is undefined (in %s)\n", |
1724 | what, es->asym.iss, fdr_name((char *)cur_fdr->rss)); | |
bd5635a1 RP |
1725 | return; |
1726 | } | |
1727 | ||
1728 | switch (es->asym.st) { | |
1729 | case stProc: | |
1730 | /* If we have full symbols we do not need more */ | |
1731 | if (skip_procedures) | |
1732 | return; | |
41bd448e SG |
1733 | if (mylookup_symbol ((char *)es->asym.iss, top_stack->cur_block, |
1734 | VAR_NAMESPACE, LOC_BLOCK)) | |
bd5635a1 RP |
1735 | break; |
1736 | /* fall through */ | |
1737 | case stGlobal: | |
1738 | case stLabel: | |
1739 | /* | |
1740 | * Note that the case of a symbol with indexNil | |
1741 | * must be handled anyways by parse_symbol(). | |
1742 | */ | |
d747e0af | 1743 | parse_symbol(&es->asym, ax, bigend); |
bd5635a1 RP |
1744 | break; |
1745 | default: | |
1746 | break; | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | /* Parse the line number info for file descriptor FH into | |
1751 | GDB's linetable LT. MIPS' encoding requires a little bit | |
1752 | of magic to get things out. Note also that MIPS' line | |
1753 | numbers can go back and forth, apparently we can live | |
1754 | with that and do not need to reorder our linetables */ | |
1755 | ||
4ad1963e | 1756 | static void |
bd5635a1 RP |
1757 | parse_lines(fh, lt) |
1758 | FDR *fh; | |
1759 | struct linetable *lt; | |
1760 | { | |
3eaebb75 | 1761 | unsigned char *base = (unsigned char*)fh->cbLineOffset; |
84ffdec2 | 1762 | int j, k; |
bd5635a1 RP |
1763 | int delta, count, lineno = 0; |
1764 | PDR *pr; | |
1765 | ||
1766 | if (base == 0) | |
1767 | return; | |
1768 | ||
1769 | /* Scan by procedure descriptors */ | |
84ffdec2 | 1770 | j = 0, k = 0; |
bd5635a1 RP |
1771 | for (pr = (PDR*)IPDFIRST(cur_hdr,fh); j < fh->cpd; j++, pr++) { |
1772 | int l, halt; | |
1773 | ||
1774 | /* No code for this one */ | |
1775 | if (pr->iline == ilineNil || | |
1776 | pr->lnLow == -1 || pr->lnHigh == -1) | |
1777 | continue; | |
1778 | /* | |
1779 | * Aurgh! To know where to stop expanding we | |
1780 | * must look-ahead. | |
1781 | */ | |
1782 | for (l = 1; l < (fh->cpd - j); l++) | |
1783 | if (pr[l].iline != -1) | |
1784 | break; | |
1785 | if (l == (fh->cpd - j)) | |
1786 | halt = fh->cline; | |
1787 | else | |
1788 | halt = pr[l].iline; | |
1789 | /* | |
1790 | * When procedures are moved around the linenumbers | |
1791 | * are attributed to the next procedure up | |
1792 | */ | |
1793 | if (pr->iline >= halt) continue; | |
1794 | ||
3eaebb75 | 1795 | base = (unsigned char*)pr->cbLineOffset; |
bd5635a1 RP |
1796 | l = pr->adr >> 2; /* in words */ |
1797 | halt += (pr->adr >> 2) - pr->iline; | |
1798 | for (lineno = pr->lnLow; l < halt;) { | |
1799 | count = *base & 0x0f; | |
1800 | delta = *base++ >> 4; | |
3eaebb75 SG |
1801 | if (delta >= 8) |
1802 | delta -= 16; | |
bd5635a1 | 1803 | if (delta == -8) { |
3eaebb75 | 1804 | delta = (base[0] << 8) | base[1]; |
4a35d6e9 FF |
1805 | if (delta >= 0x8000) |
1806 | delta -= 0x10000; | |
bd5635a1 RP |
1807 | base += 2; |
1808 | } | |
1809 | lineno += delta;/* first delta is 0 */ | |
1810 | k = add_line(lt, lineno, l, k); | |
1811 | l += count + 1; | |
1812 | } | |
1813 | } | |
1814 | } | |
101f259c JG |
1815 | \f |
1816 | /* Master parsing procedure for first-pass reading of file symbols | |
1817 | into a partial_symtab. | |
bd5635a1 | 1818 | |
3eaebb75 | 1819 | Parses the symtab described by the global symbolic header CUR_HDR. |
101f259c JG |
1820 | END_OF_TEXT_SEG gives the address just after the text segment for |
1821 | the symtab we are reading. */ | |
bd5635a1 | 1822 | |
d747e0af | 1823 | static void |
817bc7b8 | 1824 | parse_partial_symbols (end_of_text_seg, objfile) |
d4ea2aba PB |
1825 | int end_of_text_seg; |
1826 | struct objfile *objfile; | |
bd5635a1 | 1827 | { |
817bc7b8 | 1828 | int f_idx, s_idx; |
d4ea2aba PB |
1829 | HDRR *hdr = cur_hdr; |
1830 | /* Running pointers */ | |
817bc7b8 | 1831 | FDR *fh; |
d4ea2aba PB |
1832 | register EXTR *esh; |
1833 | register SYMR *sh; | |
1834 | struct partial_symtab *pst; | |
817bc7b8 | 1835 | |
d4ea2aba | 1836 | int past_first_source_file = 0; |
817bc7b8 | 1837 | |
d4ea2aba PB |
1838 | /* List of current psymtab's include files */ |
1839 | char **psymtab_include_list; | |
1840 | int includes_allocated; | |
1841 | int includes_used; | |
1842 | EXTR **extern_tab; | |
1843 | struct pst_map * fdr_to_pst; | |
1844 | /* Index within current psymtab dependency list */ | |
1845 | struct partial_symtab **dependency_list; | |
1846 | int dependencies_used, dependencies_allocated; | |
1847 | struct cleanup *old_chain; | |
817bc7b8 | 1848 | |
d747e0af | 1849 | extern_tab = (EXTR**)obstack_alloc (&objfile->psymbol_obstack, |
d4ea2aba | 1850 | sizeof(EXTR *) * hdr->iextMax); |
817bc7b8 | 1851 | |
d4ea2aba PB |
1852 | includes_allocated = 30; |
1853 | includes_used = 0; | |
1854 | psymtab_include_list = (char **) alloca (includes_allocated * | |
1855 | sizeof (char *)); | |
1856 | next_symbol_text_func = mips_next_symbol_text; | |
817bc7b8 | 1857 | |
d4ea2aba PB |
1858 | dependencies_allocated = 30; |
1859 | dependencies_used = 0; | |
1860 | dependency_list = | |
1861 | (struct partial_symtab **) alloca (dependencies_allocated * | |
1862 | sizeof (struct partial_symtab *)); | |
817bc7b8 | 1863 | |
d4ea2aba PB |
1864 | last_source_file = 0; |
1865 | ||
1866 | /* | |
817bc7b8 | 1867 | * Big plan: |
d4ea2aba PB |
1868 | * |
1869 | * Only parse the Local and External symbols, and the Relative FDR. | |
1870 | * Fixup enough of the loader symtab to be able to use it. | |
1871 | * Allocate space only for the file's portions we need to | |
1872 | * look at. (XXX) | |
1873 | */ | |
817bc7b8 | 1874 | |
d4ea2aba PB |
1875 | max_gdbinfo = 0; |
1876 | max_glevel = MIN_GLEVEL; | |
817bc7b8 | 1877 | |
d4ea2aba PB |
1878 | /* Allocate the map FDR -> PST. |
1879 | Minor hack: -O3 images might claim some global data belongs | |
1880 | to FDR -1. We`ll go along with that */ | |
1881 | fdr_to_pst = (struct pst_map *)xzalloc((hdr->ifdMax+1) * sizeof *fdr_to_pst); | |
1882 | old_chain = make_cleanup (free, fdr_to_pst); | |
1883 | fdr_to_pst++; | |
1884 | { | |
1885 | struct partial_symtab * pst = new_psymtab("", objfile); | |
1886 | fdr_to_pst[-1].pst = pst; | |
1887 | FDR_IDX(pst) = -1; | |
1888 | } | |
817bc7b8 | 1889 | |
d4ea2aba PB |
1890 | /* Pass 1 over external syms: Presize and partition the list */ |
1891 | for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) { | |
1892 | esh = (EXTR *) (hdr->cbExtOffset) + s_idx; | |
1893 | fdr_to_pst[esh->ifd].n_globals++; | |
1894 | } | |
817bc7b8 | 1895 | |
d4ea2aba PB |
1896 | /* Pass 1.5 over files: partition out global symbol space */ |
1897 | s_idx = 0; | |
1898 | for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++) { | |
1899 | fdr_to_pst[f_idx].globals_offset = s_idx; | |
1900 | s_idx += fdr_to_pst[f_idx].n_globals; | |
1901 | fdr_to_pst[f_idx].n_globals = 0; | |
1902 | } | |
bd5635a1 | 1903 | |
817bc7b8 JG |
1904 | /* Pass 2 over external syms: fill in external symbols */ |
1905 | for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) { | |
1906 | enum minimal_symbol_type ms_type = mst_text; | |
1907 | esh = (EXTR *) (hdr->cbExtOffset) + s_idx; | |
bd5635a1 | 1908 | |
817bc7b8 JG |
1909 | extern_tab[fdr_to_pst[esh->ifd].globals_offset |
1910 | + fdr_to_pst[esh->ifd].n_globals++] = esh; | |
d4ea2aba | 1911 | |
817bc7b8 JG |
1912 | if (esh->asym.sc == scUndefined || esh->asym.sc == scNil) |
1913 | continue; | |
101f259c | 1914 | |
817bc7b8 JG |
1915 | switch (esh->asym.st) { |
1916 | case stProc: | |
1917 | break; | |
1918 | case stGlobal: | |
1919 | ms_type = mst_data; | |
1920 | break; | |
1921 | case stLabel: | |
1922 | break; | |
1923 | default: | |
1924 | ms_type = mst_unknown; | |
1925 | complain (&unknown_ext_complaint, (char *)esh->asym.iss); | |
bd5635a1 | 1926 | } |
817bc7b8 JG |
1927 | prim_record_minimal_symbol ((char *)esh->asym.iss, |
1928 | esh->asym.value, | |
1929 | ms_type); | |
1930 | } | |
bd5635a1 | 1931 | |
817bc7b8 JG |
1932 | /* Pass 3 over files, over local syms: fill in static symbols */ |
1933 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) { | |
1934 | struct partial_symtab *save_pst; | |
1935 | EXTR **ext_ptr; | |
1936 | cur_fdr = fh = f_idx + (FDR *)(cur_hdr->cbFdOffset); | |
c55e6167 | 1937 | |
817bc7b8 JG |
1938 | if (fh->csym == 0) { |
1939 | fdr_to_pst[f_idx].pst = NULL; | |
1940 | continue; | |
1941 | } | |
1942 | pst = start_psymtab_common (objfile, 0, (char*)fh->rss, | |
1943 | fh->cpd ? fh->adr : 0, | |
1944 | objfile->global_psymbols.next, | |
1945 | objfile->static_psymbols.next); | |
1946 | pst->read_symtab_private = (char *) | |
1947 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); | |
1948 | ||
1949 | save_pst = pst; | |
1950 | /* Make everything point to everything. */ | |
1951 | FDR_IDX(pst) = f_idx; | |
1952 | fdr_to_pst[f_idx].pst = pst; | |
1953 | fh->ioptBase = (int)pst; | |
1954 | ||
1955 | CUR_HDR(pst) = cur_hdr; | |
1956 | ||
1957 | /* The way to turn this into a symtab is to call... */ | |
1958 | pst->read_symtab = mipscoff_psymtab_to_symtab; | |
1959 | ||
1960 | pst->texthigh = pst->textlow; | |
1961 | ||
021959e2 | 1962 | #if 0 /* This is done in start_psymtab_common */ |
817bc7b8 JG |
1963 | pst->globals_offset = global_psymbols.next - global_psymbols.list; |
1964 | pst->statics_offset = static_psymbols.next - static_psymbols.list; | |
1965 | ||
1966 | pst->n_global_syms = 0; | |
1967 | pst->n_static_syms = 0; | |
021959e2 | 1968 | #endif |
817bc7b8 JG |
1969 | |
1970 | /* The second symbol must be @stab. | |
1971 | This symbol is emitted by mips-tfile to signal | |
1972 | that the current object file uses encapsulated stabs | |
1973 | instead of mips ecoff for local symbols. | |
1974 | (It is the second symbol because the first symbol is | |
1975 | the stFile used to signal the start of a file). */ | |
1976 | if (fh->csym >= 2 | |
1977 | && strcmp((char *)(((SYMR *)fh->isymBase)[1].iss), | |
1978 | stabs_symbol) == 0) { | |
1979 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) { | |
1980 | int type_code; | |
1981 | char *namestring; | |
1982 | sh = cur_sdx + (SYMR *) fh->isymBase; | |
1983 | type_code = MIPS_UNMARK_STAB(sh->index); | |
1984 | if (!MIPS_IS_STAB(sh)) { | |
1985 | if (sh->st == stProc || sh->st == stStaticProc) { | |
1986 | long procaddr = sh->value; | |
1987 | sh = AUX_GET_ISYM (fh->fBigendian, | |
1988 | sh->index + (union aux_ext *)(fh->iauxBase)) | |
1989 | + (SYMR *) fh->isymBase - 1; | |
1990 | if (sh->st == stEnd) { | |
1991 | long high = procaddr + sh->value; | |
1992 | if (high > pst->texthigh) | |
1993 | pst->texthigh = high; | |
101f259c | 1994 | } |
7e258d18 | 1995 | } |
817bc7b8 JG |
1996 | continue; |
1997 | } | |
7e258d18 PB |
1998 | #define SET_NAMESTRING() namestring = (char*)sh->iss |
1999 | #define CUR_SYMBOL_TYPE type_code | |
2000 | #define CUR_SYMBOL_VALUE sh->value | |
7e258d18 PB |
2001 | #define START_PSYMTAB(ofile,addr,fname,low,symoff,global_syms,static_syms)\ |
2002 | pst = save_pst | |
2003 | #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0 | |
c55e6167 | 2004 | #define addr 0 /* FIXME, should be offset of addresses */ |
7e258d18 PB |
2005 | #define HANDLE_RBRAC(val) \ |
2006 | if ((val) > save_pst->texthigh) save_pst->texthigh = (val); | |
7e258d18 PB |
2007 | #include "partial-stab.h" |
2008 | #undef addr | |
7e258d18 | 2009 | } |
817bc7b8 JG |
2010 | } |
2011 | else { | |
2012 | for (cur_sdx = 0; cur_sdx < fh->csym; ) { | |
2013 | char *name; | |
2014 | enum address_class class; | |
2015 | sh = cur_sdx + (SYMR *) fh->isymBase; | |
2016 | ||
2017 | if (MIPS_IS_STAB(sh)) { | |
2018 | cur_sdx++; | |
2019 | continue; | |
2020 | } | |
101f259c | 2021 | |
817bc7b8 JG |
2022 | if (sh->sc == scUndefined || sh->sc == scNil || |
2023 | sh->index == 0xfffff) { | |
2024 | /* FIXME, premature? */ | |
2025 | cur_sdx++; | |
2026 | continue; | |
2027 | } | |
2028 | ||
2029 | name = (char *)(sh->iss); | |
2030 | ||
2031 | switch (sh->st) { | |
2032 | long high; | |
2033 | long procaddr; | |
2034 | int new_sdx; | |
2035 | ||
2036 | case stProc: /* Asm labels apparently */ | |
2037 | case stStaticProc: /* Function */ | |
2038 | ADD_PSYMBOL_TO_LIST(name, strlen(name), | |
2039 | VAR_NAMESPACE, LOC_BLOCK, | |
2040 | objfile->static_psymbols, sh->value); | |
2041 | /* Skip over procedure to next one. */ | |
2042 | if (sh->index >= hdr->iauxMax) | |
2043 | { | |
2044 | /* Should not happen, but does when cross-compiling | |
2045 | with the MIPS compiler. FIXME -- pull later. */ | |
2046 | complain (&index_complaint, name); | |
2047 | new_sdx = cur_sdx+1; /* Don't skip at all */ | |
2048 | } | |
2049 | else | |
2050 | new_sdx = AUX_GET_ISYM (fh->fBigendian, | |
2051 | sh->index + (union aux_ext *)fh->iauxBase); | |
2052 | procaddr = sh->value; | |
2053 | ||
2054 | if (new_sdx <= cur_sdx) | |
2055 | { | |
2056 | /* This should not happen either... FIXME. */ | |
2057 | complain (&aux_index_complaint, name); | |
2058 | new_sdx = cur_sdx + 1; /* Don't skip backward */ | |
2059 | } | |
2060 | ||
2061 | cur_sdx = new_sdx; | |
2062 | sh = cur_sdx + (SYMR *) fh->isymBase - 1; | |
2063 | if (sh->st != stEnd) | |
7e258d18 | 2064 | continue; |
817bc7b8 JG |
2065 | high = procaddr + sh->value; |
2066 | if (high > pst->texthigh) | |
2067 | pst->texthigh = high; | |
2068 | continue; | |
2069 | ||
2070 | case stStatic: /* Variable */ | |
2071 | class = LOC_STATIC; | |
2072 | break; | |
2073 | ||
2074 | case stTypedef: /* Typedef */ | |
2075 | class = LOC_TYPEDEF; | |
2076 | break; | |
2077 | ||
2078 | case stConstant: /* Constant decl */ | |
2079 | class = LOC_CONST; | |
2080 | break; | |
2081 | ||
2082 | case stUnion: | |
2083 | case stStruct: | |
2084 | case stEnum: | |
2085 | case stBlock: /* { }, str, un, enum*/ | |
2086 | if (sh->sc == scInfo) { | |
7e258d18 | 2087 | ADD_PSYMBOL_TO_LIST(name, strlen(name), |
817bc7b8 | 2088 | STRUCT_NAMESPACE, LOC_TYPEDEF, |
d747e0af | 2089 | objfile->static_psymbols, sh->value); |
7e258d18 | 2090 | } |
817bc7b8 JG |
2091 | /* Skip over the block */ |
2092 | cur_sdx = sh->index; | |
2093 | continue; | |
2094 | ||
2095 | case stFile: /* File headers */ | |
2096 | case stLabel: /* Labels */ | |
2097 | case stEnd: /* Ends of files */ | |
2098 | goto skip; | |
2099 | ||
2100 | default: | |
2101 | /* Both complaints are valid: one gives symbol name, | |
2102 | the other the offending symbol type. */ | |
2103 | complain (&unknown_sym_complaint, (char *)sh->iss); | |
2104 | complain (&unknown_st_complaint, (char *)sh->st); | |
2105 | cur_sdx++; | |
2106 | continue; | |
101f259c | 2107 | } |
817bc7b8 JG |
2108 | /* Use this gdb symbol */ |
2109 | ADD_PSYMBOL_TO_LIST(name, strlen(name), | |
2110 | VAR_NAMESPACE, class, | |
2111 | objfile->static_psymbols, sh->value); | |
2112 | skip: | |
2113 | cur_sdx++; /* Go to next file symbol */ | |
2114 | } | |
d4ea2aba | 2115 | |
817bc7b8 JG |
2116 | /* Now do enter the external symbols. */ |
2117 | ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset]; | |
2118 | cur_sdx = fdr_to_pst[f_idx].n_globals; | |
2119 | PST_PRIVATE(save_pst)->extern_count = cur_sdx; | |
2120 | PST_PRIVATE(save_pst)->extern_tab = ext_ptr; | |
2121 | for (; --cur_sdx >= 0; ext_ptr++) { | |
2122 | register struct partial_symbol *psym; | |
2123 | enum address_class class; | |
2124 | ||
2125 | if ((*ext_ptr)->ifd != f_idx) | |
2126 | abort(); | |
2127 | sh = &(*ext_ptr)->asym; | |
2128 | switch (sh->st) { | |
2129 | case stProc: | |
2130 | class = LOC_BLOCK; | |
2131 | break; | |
2132 | case stLabel: | |
2133 | class = LOC_LABEL; | |
2134 | break; | |
2135 | default: | |
2136 | complain (&unknown_ext_complaint, (char *)sh->iss); | |
2137 | /* Fall through, pretend it's global. */ | |
2138 | case stGlobal: | |
2139 | class = LOC_STATIC; | |
2140 | break; | |
d4ea2aba | 2141 | } |
817bc7b8 JG |
2142 | if (objfile->global_psymbols.next >= |
2143 | objfile->global_psymbols.list + objfile->global_psymbols.size) | |
2144 | extend_psymbol_list (&objfile->global_psymbols, objfile); | |
2145 | psym = objfile->global_psymbols.next++; | |
2146 | SYMBOL_NAME (psym) = (char*)sh->iss; | |
2147 | SYMBOL_NAMESPACE (psym) = VAR_NAMESPACE; | |
2148 | SYMBOL_CLASS (psym) = class; | |
2149 | SYMBOL_VALUE_ADDRESS (psym) = (CORE_ADDR)sh->value; | |
7e258d18 | 2150 | } |
bd5635a1 RP |
2151 | } |
2152 | ||
817bc7b8 JG |
2153 | end_psymtab (save_pst, psymtab_include_list, includes_used, |
2154 | -1, save_pst->texthigh, | |
2155 | dependency_list, dependencies_used); | |
2156 | if (objfile -> ei.entry_point >= save_pst->textlow && | |
2157 | objfile -> ei.entry_point < save_pst->texthigh) | |
2158 | { | |
2159 | objfile -> ei.entry_file_lowpc = save_pst->textlow; | |
2160 | objfile -> ei.entry_file_highpc = save_pst->texthigh; | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | /* Mark the last code address, and remember it for later */ | |
2165 | hdr->cbDnOffset = end_of_text_seg; | |
bd5635a1 | 2166 | |
021959e2 JG |
2167 | /* Now scan the FDRs for dependencies */ |
2168 | for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) { | |
2169 | int s_id0 = 0; | |
2170 | fh = f_idx + (FDR *)(cur_hdr->cbFdOffset); | |
2171 | pst = fdr_to_pst[f_idx].pst; | |
2172 | ||
2173 | /* This should catch stabs-in-ecoff. */ | |
2174 | if (fh->crfd <= 1) | |
2175 | continue; | |
2176 | ||
2177 | if (fh->cpd == 0) { /* If there are no functions defined here ... */ | |
2178 | /* ...then presumably a .h file: drop reverse depends .h->.c */ | |
2179 | for (; s_id0 < fh->crfd; s_id0++) { | |
2180 | RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0; | |
2181 | if (*rh == f_idx) { | |
2182 | s_id0++; /* Skip self-dependency */ | |
2183 | break; | |
2184 | } | |
2185 | } | |
2186 | } | |
2187 | pst->number_of_dependencies = fh->crfd - s_id0; | |
2188 | pst->dependencies = (struct partial_symtab **) | |
d747e0af | 2189 | obstack_alloc (&objfile->psymbol_obstack, |
021959e2 JG |
2190 | pst->number_of_dependencies * |
2191 | sizeof (struct partial_symtab *)); | |
2192 | for (s_idx = s_id0; s_idx < fh->crfd; s_idx++) { | |
2193 | RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx; | |
2194 | if (*rh < 0 || *rh >= hdr->ifdMax) | |
41bd448e | 2195 | complain(&bad_file_number_complaint, (char *)*rh); |
021959e2 JG |
2196 | else |
2197 | pst->dependencies[s_idx-s_id0] = fdr_to_pst[*rh].pst; | |
2198 | } | |
2199 | } | |
2200 | do_cleanups (old_chain); | |
bd5635a1 RP |
2201 | } |
2202 | ||
2203 | ||
d4ea2aba | 2204 | #if 0 |
bd5635a1 RP |
2205 | /* Do the initial analisys of the F_IDX-th file descriptor. |
2206 | Allocates a partial symtab for it, and builds the list | |
2207 | of dependent files by recursion. LEV says at which level | |
2208 | of recursion we are called (to pretty up debug traces) */ | |
2209 | ||
2210 | static struct partial_symtab * | |
a048c8f5 | 2211 | parse_fdr(f_idx, lev, objfile) |
bd5635a1 | 2212 | int f_idx; |
a048c8f5 JG |
2213 | int lev; |
2214 | struct objfile *objfile; | |
bd5635a1 RP |
2215 | { |
2216 | register FDR *fh; | |
2217 | register struct partial_symtab *pst; | |
2218 | int s_idx, s_id0; | |
2219 | ||
2220 | fh = (FDR *) (cur_hdr->cbFdOffset) + f_idx; | |
2221 | ||
2222 | /* Use this to indicate into which symtab this file was parsed */ | |
2223 | if (fh->ioptBase) | |
2224 | return (struct partial_symtab *) fh->ioptBase; | |
2225 | ||
2226 | /* Debuggability level */ | |
2227 | if (compare_glevel(max_glevel, fh->glevel) < 0) | |
2228 | max_glevel = fh->glevel; | |
2229 | ||
2230 | /* Make a new partial_symtab */ | |
a048c8f5 | 2231 | pst = new_psymtab(fh->rss, objfile); |
bd5635a1 RP |
2232 | if (fh->cpd == 0){ |
2233 | pst->textlow = 0; | |
2234 | pst->texthigh = 0; | |
2235 | } else { | |
2236 | pst->textlow = fh->adr; | |
2237 | pst->texthigh = fh->cpd; /* To be fixed later */ | |
2238 | } | |
bd5635a1 | 2239 | |
101f259c | 2240 | /* Make everything point to everything. */ |
4a35d6e9 | 2241 | FDR_IDX(pst) = f_idx; |
bd5635a1 RP |
2242 | fdr_to_pst[f_idx].pst = pst; |
2243 | fh->ioptBase = (int)pst; | |
2244 | ||
2245 | /* Analyze its dependencies */ | |
2246 | if (fh->crfd <= 1) | |
2247 | return pst; | |
2248 | ||
2249 | s_id0 = 0; | |
2250 | if (fh->cpd == 0) { /* If there are no functions defined here ... */ | |
2251 | /* ...then presumably a .h file: drop reverse depends .h->.c */ | |
2252 | for (; s_id0 < fh->crfd; s_id0++) { | |
2253 | RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0; | |
2254 | if (*rh == f_idx) { | |
2255 | s_id0++; /* Skip self-dependency */ | |
2256 | break; | |
2257 | } | |
2258 | } | |
2259 | } | |
2260 | pst->number_of_dependencies = fh->crfd - s_id0; | |
2261 | pst->dependencies = (struct partial_symtab **) | |
021959e2 | 2262 | obstack_alloc (&objfile->psymbol_obstack, |
3eaebb75 SG |
2263 | pst->number_of_dependencies * |
2264 | sizeof (struct partial_symtab *)); | |
bd5635a1 RP |
2265 | for (s_idx = s_id0; s_idx < fh->crfd; s_idx++) { |
2266 | RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx; | |
2267 | ||
a048c8f5 | 2268 | pst->dependencies[s_idx-s_id0] = parse_fdr(*rh, lev+1, objfile); |
bd5635a1 RP |
2269 | } |
2270 | ||
2271 | return pst; | |
2272 | } | |
d4ea2aba | 2273 | #endif |
bd5635a1 | 2274 | |
c55e6167 JG |
2275 | static char* |
2276 | mips_next_symbol_text () | |
7e258d18 | 2277 | { |
c55e6167 JG |
2278 | cur_sdx++; |
2279 | return (char*)((SYMR *)cur_fdr->isymBase)[cur_sdx].iss; | |
7e258d18 | 2280 | } |
bd5635a1 RP |
2281 | |
2282 | /* Ancillary function to psymtab_to_symtab(). Does all the work | |
2283 | for turning the partial symtab PST into a symtab, recurring | |
3eaebb75 SG |
2284 | first on all dependent psymtabs. The argument FILENAME is |
2285 | only passed so we can see in debug stack traces what file | |
817bc7b8 JG |
2286 | is being read. |
2287 | ||
2288 | This function has a split personality, based on whether the | |
2289 | symbol table contains ordinary ecoff symbols, or stabs-in-ecoff. | |
2290 | The flow of control and even the memory allocation differs. FIXME. */ | |
bd5635a1 | 2291 | |
e072c738 | 2292 | static void |
3eaebb75 | 2293 | psymtab_to_symtab_1(pst, filename) |
7e258d18 PB |
2294 | struct partial_symtab *pst; |
2295 | char *filename; | |
bd5635a1 | 2296 | { |
817bc7b8 | 2297 | int i; |
7e258d18 PB |
2298 | struct symtab *st; |
2299 | FDR *fh; | |
7e258d18 | 2300 | struct linetable *lines; |
817bc7b8 | 2301 | int bound; |
7e258d18 PB |
2302 | |
2303 | if (pst->readin) | |
2304 | return; | |
2305 | pst->readin = 1; | |
7e258d18 | 2306 | |
7e258d18 PB |
2307 | /* Read in all partial symbtabs on which this one is dependent. |
2308 | NOTE that we do have circular dependencies, sigh. We solved | |
2309 | that by setting pst->readin before this point. */ | |
817bc7b8 | 2310 | |
7e258d18 PB |
2311 | for (i = 0; i < pst->number_of_dependencies; i++) |
2312 | if (!pst->dependencies[i]->readin) { | |
2313 | /* Inform about additional files to be read in. */ | |
2314 | if (info_verbose) | |
2315 | { | |
2316 | fputs_filtered (" ", stdout); | |
2317 | wrap_here (""); | |
2318 | fputs_filtered ("and ", stdout); | |
2319 | wrap_here (""); | |
2320 | printf_filtered ("%s...", | |
2321 | pst->dependencies[i]->filename); | |
2322 | wrap_here (""); /* Flush output */ | |
2323 | fflush (stdout); | |
bd5635a1 | 2324 | } |
7e258d18 | 2325 | /* We only pass the filename for debug purposes */ |
817bc7b8 | 2326 | psymtab_to_symtab_1(pst->dependencies[i], |
7e258d18 PB |
2327 | pst->dependencies[i]->filename); |
2328 | } | |
817bc7b8 | 2329 | |
7e258d18 | 2330 | /* Now read the symbols for this symtab */ |
817bc7b8 JG |
2331 | |
2332 | current_objfile = pst->objfile; | |
2333 | cur_fd = FDR_IDX(pst); | |
2334 | fh = (cur_fd == -1) ? 0 : (FDR *) (cur_hdr->cbFdOffset) + FDR_IDX(pst); | |
2335 | cur_fdr = fh; | |
2336 | ||
2337 | /* BOUND is the highest core address of this file's procedures */ | |
2338 | bound = (cur_fd == cur_hdr->ifdMax - 1) ? | |
2339 | cur_hdr->cbDnOffset : | |
2340 | fh[1].adr; | |
2341 | ||
2342 | /* See comment in parse_partial_symbols about the @stabs sentinel. */ | |
2343 | if (fh && fh->csym >= 2 | |
2344 | && strcmp((char *)(((SYMR *)fh->isymBase)[1].iss), stabs_symbol) | |
2345 | == 0) { | |
2346 | ||
2347 | /* | |
2348 | * This symbol table contains stabs-in-ecoff entries. | |
2349 | */ | |
2350 | ||
2351 | SYMR *sh; | |
2352 | PDR *pr; | |
7e258d18 | 2353 | |
817bc7b8 JG |
2354 | /* Parse local symbols first */ |
2355 | ||
2356 | if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */ | |
2357 | { | |
2358 | current_objfile = NULL; | |
2359 | return; | |
2360 | } | |
2361 | for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) { | |
2362 | register SYMR *sh = cur_sdx + (SYMR *) fh->isymBase; | |
2363 | char *name = (char*)sh->iss; | |
2364 | CORE_ADDR valu = sh->value; | |
2365 | if (MIPS_IS_STAB(sh)) { | |
2366 | int type_code = MIPS_UNMARK_STAB(sh->index); | |
2367 | process_one_symbol (type_code, 0, valu, name, /*FIXME*/ 0, | |
2368 | pst->objfile); | |
2369 | if (type_code == N_FUN) { | |
2370 | /* Make up special symbol to contain | |
2371 | procedure specific info */ | |
2372 | struct mips_extra_func_info *e = | |
2373 | (struct mips_extra_func_info *) | |
2374 | obstack_alloc(¤t_objfile->symbol_obstack, | |
2375 | sizeof(struct mips_extra_func_info)); | |
2376 | struct symbol *s = new_symbol(".gdbinfo."); | |
2377 | SYMBOL_NAMESPACE(s) = LABEL_NAMESPACE; | |
2378 | SYMBOL_CLASS(s) = LOC_CONST; | |
2379 | SYMBOL_TYPE(s) = builtin_type_void; | |
2380 | SYMBOL_VALUE(s) = (int)e; | |
2381 | add_symbol_to_list (s, &local_symbols); | |
2382 | } | |
2383 | } | |
2384 | else if (sh->st == stLabel && sh->index != indexNil) { | |
2385 | /* Handle encoded stab line number. */ | |
2386 | record_line (current_subfile, sh->index, valu); | |
2387 | } | |
2388 | else complain (&stab_unknown_complaint, (char *)sh->iss); | |
2389 | } | |
2390 | st = end_symtab (pst->texthigh, 0, 0, pst->objfile); | |
2391 | ||
2392 | /* Sort the symbol table now, we are done adding symbols to it. | |
2393 | We must do this before parse_procedure calls lookup_symbol. */ | |
2394 | sort_symtab_syms(st); | |
2395 | ||
2396 | /* This may not be necessary for stabs symtabs. FIXME. */ | |
2397 | sort_blocks (st); | |
2398 | ||
2399 | /* Fill in procedure info next. We need to look-ahead to | |
2400 | find out where each procedure's code ends. */ | |
2401 | ||
2402 | for (i = 0; i <= fh->cpd-1; i++) { | |
2403 | pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + i; | |
2404 | parse_procedure (pr, i < fh->cpd-1 ? pr[1].adr : bound, 1); | |
2405 | } | |
2406 | } else { | |
2407 | ||
2408 | /* | |
2409 | * This symbol table contains ordinary ecoff entries. | |
2410 | */ | |
2411 | ||
2412 | int f_max; | |
2413 | int maxlines; | |
2414 | EXTR **ext_ptr; | |
2415 | ||
2416 | /* How many symbols will we need */ | |
2417 | /* FIXME, this does not count enum values. */ | |
2418 | f_max = pst->n_global_syms + pst->n_static_syms; | |
2419 | if (fh == 0) { | |
2420 | maxlines = 0; | |
2421 | st = new_symtab ("unknown", f_max, 0, pst->objfile); | |
2422 | } else { | |
2423 | f_max += fh->csym + fh->cpd; | |
2424 | maxlines = 2 * fh->cline; | |
2425 | st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile); | |
2426 | } | |
2427 | ||
2428 | lines = LINETABLE(st); | |
2429 | pending_list = (struct mips_pending **) cur_hdr->cbOptOffset; | |
2430 | if (pending_list == 0) { | |
2431 | pending_list = (struct mips_pending **) | |
2432 | xzalloc(cur_hdr->ifdMax * sizeof(struct mips_pending *)); | |
2433 | cur_hdr->cbOptOffset = (int)pending_list; | |
2434 | } | |
2435 | ||
bd5635a1 | 2436 | /* Get a new lexical context */ |
7e258d18 | 2437 | |
bd5635a1 | 2438 | push_parse_stack(); |
817bc7b8 JG |
2439 | top_stack->cur_st = st; |
2440 | top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(st), | |
101f259c | 2441 | STATIC_BLOCK); |
bd5635a1 RP |
2442 | BLOCK_START(top_stack->cur_block) = fh ? fh->adr : 0; |
2443 | BLOCK_END(top_stack->cur_block) = 0; | |
2444 | top_stack->blocktype = stFile; | |
3eaebb75 | 2445 | top_stack->maxsyms = 2*f_max; |
bd5635a1 RP |
2446 | top_stack->cur_type = 0; |
2447 | top_stack->procadr = 0; | |
2448 | top_stack->numargs = 0; | |
ad142b8e | 2449 | |
817bc7b8 JG |
2450 | if (fh) { |
2451 | SYMR *sh; | |
2452 | PDR *pr; | |
2453 | ||
2454 | /* Parse local symbols first */ | |
2455 | ||
c55e6167 JG |
2456 | for (cur_sdx = 0; cur_sdx < fh->csym; ) { |
2457 | sh = (SYMR *) (fh->isymBase) + cur_sdx; | |
84ffdec2 JG |
2458 | cur_sdx += parse_symbol(sh, (union aux_ent *)fh->iauxBase, |
2459 | fh->fBigendian); | |
7e258d18 | 2460 | } |
bd5635a1 | 2461 | |
817bc7b8 JG |
2462 | /* Linenumbers. At the end, check if we can save memory */ |
2463 | ||
7e258d18 PB |
2464 | parse_lines(fh, lines); |
2465 | if (lines->nitems < fh->cline) | |
2466 | lines = shrink_linetable(lines); | |
bd5635a1 | 2467 | |
817bc7b8 JG |
2468 | /* Fill in procedure info next. We need to look-ahead to |
2469 | find out where each procedure's code ends. */ | |
ad142b8e | 2470 | |
817bc7b8 JG |
2471 | for (i = 0; i <= fh->cpd-1; i++) { |
2472 | pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + i; | |
2473 | parse_procedure(pr, i < fh->cpd-1 ? pr[1].adr : bound, 0); | |
2474 | } | |
ad142b8e | 2475 | } |
817bc7b8 | 2476 | |
7e258d18 | 2477 | LINETABLE(st) = lines; |
817bc7b8 | 2478 | |
bd5635a1 | 2479 | /* .. and our share of externals. |
817bc7b8 | 2480 | XXX use the global list to speed up things here. how? |
101f259c | 2481 | FIXME, Maybe quit once we have found the right number of ext's? */ |
817bc7b8 JG |
2482 | top_stack->cur_st = st; |
2483 | top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st), | |
2484 | GLOBAL_BLOCK); | |
bd5635a1 | 2485 | top_stack->blocktype = stFile; |
7e258d18 PB |
2486 | top_stack->maxsyms = |
2487 | cur_hdr->isymMax + cur_hdr->ipdMax + cur_hdr->iextMax; | |
2488 | ||
d4ea2aba PB |
2489 | ext_ptr = PST_PRIVATE(pst)->extern_tab; |
2490 | for (i = PST_PRIVATE(pst)->extern_count; --i >= 0; ext_ptr++) | |
d747e0af | 2491 | parse_external(*ext_ptr, 1, fh->fBigendian); |
817bc7b8 | 2492 | |
bd5635a1 RP |
2493 | /* If there are undefined, tell the user */ |
2494 | if (n_undef_symbols) { | |
7e258d18 PB |
2495 | printf_filtered("File %s contains %d unresolved references:", |
2496 | st->filename, n_undef_symbols); | |
2497 | printf_filtered("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n", | |
2498 | n_undef_vars, n_undef_procs, n_undef_labels); | |
2499 | n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0; | |
bd5635a1 | 2500 | |
7e258d18 | 2501 | } |
bd5635a1 | 2502 | pop_parse_stack(); |
817bc7b8 JG |
2503 | |
2504 | /* Sort the symbol table now, we are done adding symbols to it.*/ | |
2505 | sort_symtab_syms(st); | |
2506 | ||
2507 | sort_blocks (st); | |
7e258d18 | 2508 | } |
7e258d18 | 2509 | |
7e258d18 PB |
2510 | /* Now link the psymtab and the symtab. */ |
2511 | pst->symtab = st; | |
021959e2 JG |
2512 | |
2513 | current_objfile = NULL; | |
101f259c | 2514 | } |
bd5635a1 RP |
2515 | \f |
2516 | /* Ancillary parsing procedures. */ | |
2517 | ||
2518 | /* Lookup the type at relative index RN. Return it in TPP | |
2519 | if found and in any event come up with its name PNAME. | |
d747e0af MT |
2520 | BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian). |
2521 | Return value says how many aux symbols we ate. */ | |
bd5635a1 | 2522 | |
d747e0af MT |
2523 | static int |
2524 | cross_ref(ax, tpp, type_code, pname, bigend) | |
2525 | union aux_ext *ax; | |
7e258d18 | 2526 | struct type **tpp; |
e5578a31 | 2527 | enum type_code type_code; /* Use to alloc new type if none is found. */ |
7e258d18 | 2528 | char **pname; |
d747e0af | 2529 | int bigend; |
bd5635a1 | 2530 | { |
d747e0af | 2531 | RNDXR rn[1]; |
bd5635a1 | 2532 | unsigned rf; |
d747e0af MT |
2533 | int result = 1; |
2534 | ||
2535 | ecoff_swap_rndx_in (bigend, ax, rn); | |
bd5635a1 RP |
2536 | |
2537 | /* Escape index means 'the next one' */ | |
d747e0af MT |
2538 | if (rn->rfd == 0xfff) { |
2539 | result++; | |
2540 | rf = AUX_GET_ISYM (bigend, ax + 1); | |
2541 | } else { | |
bd5635a1 | 2542 | rf = rn->rfd; |
d747e0af | 2543 | } |
bd5635a1 RP |
2544 | |
2545 | if (rf == -1) { | |
2546 | /* Ooops */ | |
2547 | *pname = "<undefined>"; | |
2548 | } else { | |
2549 | /* | |
817bc7b8 | 2550 | * Find the relative file descriptor and the symbol in it |
bd5635a1 RP |
2551 | */ |
2552 | FDR *fh = get_rfd(cur_fd, rf); | |
2553 | SYMR *sh; | |
2554 | struct type *t; | |
2555 | ||
2556 | /* | |
2557 | * If we have processed this symbol then we left a forwarding | |
2558 | * pointer to the corresponding GDB symbol. If not, we`ll put | |
2559 | * it in a list of pending symbols, to be processed later when | |
2560 | * the file f will be. In any event, we collect the name for | |
2561 | * the type here. Which is why we made a first pass at | |
817bc7b8 | 2562 | * strings. |
bd5635a1 RP |
2563 | */ |
2564 | sh = (SYMR *) (fh->isymBase) + rn->index; | |
2565 | ||
2566 | /* Careful, we might be looking at .o files */ | |
2567 | *pname = (UNSAFE_DATA_ADDR(sh->iss)) ? "<undefined>" : | |
2568 | (char *) sh->iss; | |
2569 | ||
2570 | /* Have we parsed it ? */ | |
2571 | if ((!UNSAFE_DATA_ADDR(sh->value)) && (sh->st == stParsed)) { | |
2572 | t = (struct type *) sh->value; | |
2573 | *tpp = t; | |
2574 | } else { | |
7e258d18 PB |
2575 | /* Avoid duplicates */ |
2576 | struct mips_pending *p = is_pending_symbol(fh, sh); | |
2577 | if (p) | |
2578 | *tpp = p->t; | |
2579 | else { | |
021959e2 | 2580 | *tpp = init_type(type_code, 0, 0, 0, (struct objfile *) NULL); |
7e258d18 PB |
2581 | add_pending(fh, sh, *tpp); |
2582 | } | |
bd5635a1 RP |
2583 | } |
2584 | } | |
3eaebb75 SG |
2585 | |
2586 | /* We used one auxent normally, two if we got a "next one" rf. */ | |
d747e0af | 2587 | return result; |
bd5635a1 RP |
2588 | } |
2589 | ||
2590 | ||
2591 | /* Quick&dirty lookup procedure, to avoid the MI ones that require | |
2592 | keeping the symtab sorted */ | |
2593 | ||
2594 | static struct symbol * | |
2595 | mylookup_symbol (name, block, namespace, class) | |
2596 | char *name; | |
2597 | register struct block *block; | |
2598 | enum namespace namespace; | |
2599 | enum address_class class; | |
2600 | { | |
2601 | register int bot, top, inc; | |
2602 | register struct symbol *sym; | |
2603 | ||
2604 | bot = 0; | |
2605 | top = BLOCK_NSYMS(block); | |
2606 | inc = name[0]; | |
2607 | while (bot < top) { | |
2608 | sym = BLOCK_SYM(block, bot); | |
2609 | if (SYMBOL_NAME(sym)[0] == inc | |
2610 | && SYMBOL_NAMESPACE(sym) == namespace | |
2611 | && SYMBOL_CLASS(sym) == class | |
2612 | && !strcmp(SYMBOL_NAME(sym), name)) | |
2613 | return sym; | |
2614 | bot++; | |
2615 | } | |
84ffdec2 JG |
2616 | block = BLOCK_SUPERBLOCK (block); |
2617 | if (block) | |
bd5635a1 RP |
2618 | return mylookup_symbol (name, block, namespace, class); |
2619 | return 0; | |
2620 | } | |
2621 | ||
2622 | ||
3eaebb75 SG |
2623 | /* Add a new symbol S to a block B. |
2624 | Infrequently, we will need to reallocate the block to make it bigger. | |
2625 | We only detect this case when adding to top_stack->cur_block, since | |
2626 | that's the only time we know how big the block is. FIXME. */ | |
bd5635a1 | 2627 | |
3eaebb75 | 2628 | static void |
bd5635a1 RP |
2629 | add_symbol(s,b) |
2630 | struct symbol *s; | |
2631 | struct block *b; | |
2632 | { | |
3eaebb75 SG |
2633 | int nsyms = BLOCK_NSYMS(b)++; |
2634 | struct block *origb; | |
2635 | struct parse_stack *stackp; | |
2636 | ||
bd5635a1 | 2637 | if (b == top_stack->cur_block && |
3eaebb75 SG |
2638 | nsyms >= top_stack->maxsyms) { |
2639 | complain (&block_overflow_complaint, s->name); | |
2640 | /* In this case shrink_block is actually grow_block, since | |
2641 | BLOCK_NSYMS(b) is larger than its current size. */ | |
2642 | origb = b; | |
2643 | b = shrink_block (top_stack->cur_block, top_stack->cur_st); | |
2644 | ||
2645 | /* Now run through the stack replacing pointers to the | |
2646 | original block. shrink_block has already done this | |
2647 | for the blockvector and BLOCK_FUNCTION. */ | |
2648 | for (stackp = top_stack; stackp; stackp = stackp->next) { | |
2649 | if (stackp->cur_block == origb) { | |
2650 | stackp->cur_block = b; | |
2651 | stackp->maxsyms = BLOCK_NSYMS (b); | |
2652 | } | |
2653 | } | |
2654 | } | |
2655 | BLOCK_SYM(b,nsyms) = s; | |
bd5635a1 RP |
2656 | } |
2657 | ||
2658 | /* Add a new block B to a symtab S */ | |
2659 | ||
3eaebb75 | 2660 | static void |
bd5635a1 RP |
2661 | add_block(b,s) |
2662 | struct block *b; | |
2663 | struct symtab *s; | |
2664 | { | |
2665 | struct blockvector *bv = BLOCKVECTOR(s); | |
2666 | ||
84ffdec2 | 2667 | bv = (struct blockvector *)xrealloc((PTR) bv, |
d747e0af MT |
2668 | sizeof(struct blockvector) + |
2669 | BLOCKVECTOR_NBLOCKS(bv) | |
2670 | * sizeof(bv->block)); | |
bd5635a1 RP |
2671 | if (bv != BLOCKVECTOR(s)) |
2672 | BLOCKVECTOR(s) = bv; | |
2673 | ||
2674 | BLOCKVECTOR_BLOCK(bv, BLOCKVECTOR_NBLOCKS(bv)++) = b; | |
2675 | } | |
2676 | ||
2677 | /* Add a new linenumber entry (LINENO,ADR) to a linevector LT. | |
2678 | MIPS' linenumber encoding might need more than one byte | |
2679 | to describe it, LAST is used to detect these continuation lines */ | |
2680 | ||
3eaebb75 | 2681 | static int |
bd5635a1 RP |
2682 | add_line(lt, lineno, adr, last) |
2683 | struct linetable *lt; | |
3eaebb75 | 2684 | int lineno; |
bd5635a1 | 2685 | CORE_ADDR adr; |
3eaebb75 | 2686 | int last; |
bd5635a1 RP |
2687 | { |
2688 | if (last == 0) | |
2689 | last = -2; /* make sure we record first line */ | |
2690 | ||
2691 | if (last == lineno) /* skip continuation lines */ | |
2692 | return lineno; | |
2693 | ||
2694 | lt->item[lt->nitems].line = lineno; | |
2695 | lt->item[lt->nitems++].pc = adr << 2; | |
2696 | return lineno; | |
2697 | } | |
bd5635a1 | 2698 | \f |
84ffdec2 | 2699 | /* Sorting and reordering procedures */ |
bd5635a1 | 2700 | |
bd5635a1 RP |
2701 | /* Blocks with a smaller low bound should come first */ |
2702 | ||
84ffdec2 | 2703 | static int |
391ca579 SG |
2704 | compare_blocks(arg1, arg2) |
2705 | const void *arg1, *arg2; | |
bd5635a1 RP |
2706 | { |
2707 | register int addr_diff; | |
391ca579 SG |
2708 | struct block **b1 = (struct block **) arg1; |
2709 | struct block **b2 = (struct block **) arg2; | |
bd5635a1 RP |
2710 | |
2711 | addr_diff = (BLOCK_START((*b1))) - (BLOCK_START((*b2))); | |
2712 | if (addr_diff == 0) | |
2713 | return (BLOCK_END((*b1))) - (BLOCK_END((*b2))); | |
2714 | return addr_diff; | |
2715 | } | |
2716 | ||
bd5635a1 RP |
2717 | /* Sort the blocks of a symtab S. |
2718 | Reorder the blocks in the blockvector by code-address, | |
2719 | as required by some MI search routines */ | |
2720 | ||
e072c738 | 2721 | static void |
bd5635a1 RP |
2722 | sort_blocks(s) |
2723 | struct symtab *s; | |
2724 | { | |
2725 | struct blockvector *bv = BLOCKVECTOR(s); | |
2726 | ||
2727 | if (BLOCKVECTOR_NBLOCKS(bv) <= 2) { | |
2728 | /* Cosmetic */ | |
d219db01 JG |
2729 | if (BLOCK_END(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) == 0) |
2730 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) = 0; | |
101f259c JG |
2731 | if (BLOCK_END(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) == 0) |
2732 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) = 0; | |
bd5635a1 RP |
2733 | return; |
2734 | } | |
2735 | /* | |
2736 | * This is very unfortunate: normally all functions are compiled in | |
2737 | * the order they are found, but if the file is compiled -O3 things | |
2738 | * are very different. It would be nice to find a reliable test | |
2739 | * to detect -O3 images in advance. | |
2740 | */ | |
2741 | if (BLOCKVECTOR_NBLOCKS(bv) > 3) | |
d219db01 JG |
2742 | qsort(&BLOCKVECTOR_BLOCK(bv,FIRST_LOCAL_BLOCK), |
2743 | BLOCKVECTOR_NBLOCKS(bv) - FIRST_LOCAL_BLOCK, | |
bd5635a1 RP |
2744 | sizeof(struct block *), |
2745 | compare_blocks); | |
2746 | ||
2747 | { | |
2748 | register CORE_ADDR high = 0; | |
2749 | register int i, j = BLOCKVECTOR_NBLOCKS(bv); | |
2750 | ||
d219db01 | 2751 | for (i = FIRST_LOCAL_BLOCK; i < j; i++) |
bd5635a1 RP |
2752 | if (high < BLOCK_END(BLOCKVECTOR_BLOCK(bv,i))) |
2753 | high = BLOCK_END(BLOCKVECTOR_BLOCK(bv,i)); | |
d219db01 | 2754 | BLOCK_END(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) = high; |
bd5635a1 RP |
2755 | } |
2756 | ||
d219db01 JG |
2757 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) = |
2758 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,FIRST_LOCAL_BLOCK)); | |
bd5635a1 | 2759 | |
817bc7b8 | 2760 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) = |
d219db01 JG |
2761 | BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)); |
2762 | BLOCK_END (BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) = | |
2763 | BLOCK_END (BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)); | |
bd5635a1 RP |
2764 | } |
2765 | ||
bd5635a1 RP |
2766 | \f |
2767 | /* Constructor/restructor/destructor procedures */ | |
2768 | ||
2769 | /* Allocate a new symtab for NAME. Needs an estimate of how many symbols | |
2770 | MAXSYMS and linenumbers MAXLINES we'll put in it */ | |
2771 | ||
4ad1963e | 2772 | static struct symtab * |
a048c8f5 | 2773 | new_symtab(name, maxsyms, maxlines, objfile) |
bd5635a1 | 2774 | char *name; |
d747e0af MT |
2775 | int maxsyms; |
2776 | int maxlines; | |
2777 | struct objfile *objfile; | |
bd5635a1 | 2778 | { |
021959e2 | 2779 | struct symtab *s = allocate_symtab (name, objfile); |
bd5635a1 | 2780 | |
021959e2 | 2781 | LINETABLE(s) = new_linetable(maxlines); |
bd5635a1 | 2782 | |
021959e2 JG |
2783 | /* All symtabs must have at least two blocks */ |
2784 | BLOCKVECTOR(s) = new_bvect(2); | |
2785 | BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), GLOBAL_BLOCK) = new_block(maxsyms); | |
2786 | BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), STATIC_BLOCK) = new_block(maxsyms); | |
2787 | BLOCK_SUPERBLOCK( BLOCKVECTOR_BLOCK(BLOCKVECTOR(s),STATIC_BLOCK)) = | |
2788 | BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), GLOBAL_BLOCK); | |
bd5635a1 | 2789 | |
021959e2 | 2790 | s->free_code = free_linetable; |
bd5635a1 | 2791 | |
021959e2 | 2792 | return (s); |
bd5635a1 RP |
2793 | } |
2794 | ||
bd5635a1 RP |
2795 | /* Allocate a new partial_symtab NAME */ |
2796 | ||
2797 | static struct partial_symtab * | |
a048c8f5 | 2798 | new_psymtab(name, objfile) |
bd5635a1 | 2799 | char *name; |
a048c8f5 | 2800 | struct objfile *objfile; |
bd5635a1 | 2801 | { |
021959e2 | 2802 | struct partial_symtab *psymtab; |
817bc7b8 | 2803 | |
021959e2 JG |
2804 | /* FIXME -- why (char *) -1 rather than NULL? */ |
2805 | psymtab = allocate_psymtab (name == (char *) -1 ? "<no name>" : name, | |
2806 | objfile); | |
817bc7b8 | 2807 | |
021959e2 | 2808 | /* Keep a backpointer to the file's symbols */ |
bd5635a1 | 2809 | |
021959e2 JG |
2810 | psymtab -> read_symtab_private = (char *) |
2811 | obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); | |
2812 | CUR_HDR(psymtab) = cur_hdr; | |
817bc7b8 | 2813 | |
021959e2 JG |
2814 | /* The way to turn this into a symtab is to call... */ |
2815 | psymtab->read_symtab = mipscoff_psymtab_to_symtab; | |
2816 | return (psymtab); | |
bd5635a1 RP |
2817 | } |
2818 | ||
2819 | ||
84ffdec2 | 2820 | /* Allocate a linetable array of the given SIZE. Since the struct |
817bc7b8 | 2821 | already includes one item, we subtract one when calculating the |
84ffdec2 | 2822 | proper size to allocate. */ |
bd5635a1 | 2823 | |
7e258d18 PB |
2824 | static struct linetable * |
2825 | new_linetable(size) | |
84ffdec2 | 2826 | int size; |
bd5635a1 RP |
2827 | { |
2828 | struct linetable *l; | |
2829 | ||
84ffdec2 | 2830 | size = (size-1) * sizeof(l->item) + sizeof(struct linetable); |
bd5635a1 RP |
2831 | l = (struct linetable *)xmalloc(size); |
2832 | l->nitems = 0; | |
2833 | return l; | |
2834 | } | |
2835 | ||
2836 | /* Oops, too big. Shrink it. This was important with the 2.4 linetables, | |
84ffdec2 JG |
2837 | I am not so sure about the 3.4 ones. |
2838 | ||
2839 | Since the struct linetable already includes one item, we subtract one when | |
2840 | calculating the proper size to allocate. */ | |
bd5635a1 | 2841 | |
7e258d18 PB |
2842 | static struct linetable * |
2843 | shrink_linetable(lt) | |
2844 | struct linetable * lt; | |
bd5635a1 | 2845 | { |
bd5635a1 | 2846 | |
817bc7b8 | 2847 | return (struct linetable *) xrealloc ((PTR)lt, |
84ffdec2 JG |
2848 | sizeof(struct linetable) |
2849 | + (lt->nitems - 1) * sizeof(lt->item)); | |
bd5635a1 RP |
2850 | } |
2851 | ||
2852 | /* Allocate and zero a new blockvector of NBLOCKS blocks. */ | |
2853 | ||
4ad1963e | 2854 | static struct blockvector * |
3eaebb75 | 2855 | new_bvect(nblocks) |
84ffdec2 | 2856 | int nblocks; |
bd5635a1 RP |
2857 | { |
2858 | struct blockvector *bv; | |
2859 | int size; | |
2860 | ||
2861 | size = sizeof(struct blockvector) + nblocks * sizeof(struct block*); | |
2862 | bv = (struct blockvector *) xzalloc(size); | |
2863 | ||
2864 | BLOCKVECTOR_NBLOCKS(bv) = nblocks; | |
2865 | ||
2866 | return bv; | |
2867 | } | |
2868 | ||
2869 | /* Allocate and zero a new block of MAXSYMS symbols */ | |
2870 | ||
4ad1963e | 2871 | static struct block * |
3eaebb75 | 2872 | new_block(maxsyms) |
84ffdec2 | 2873 | int maxsyms; |
bd5635a1 RP |
2874 | { |
2875 | int size = sizeof(struct block) + (maxsyms-1) * sizeof(struct symbol *); | |
bd5635a1 | 2876 | |
84ffdec2 | 2877 | return (struct block *)xzalloc (size); |
bd5635a1 RP |
2878 | } |
2879 | ||
3eaebb75 SG |
2880 | /* Ooops, too big. Shrink block B in symtab S to its minimal size. |
2881 | Shrink_block can also be used by add_symbol to grow a block. */ | |
bd5635a1 RP |
2882 | |
2883 | static struct block * | |
2884 | shrink_block(b, s) | |
2885 | struct block *b; | |
2886 | struct symtab *s; | |
2887 | { | |
2888 | struct block *new; | |
2889 | struct blockvector *bv = BLOCKVECTOR(s); | |
2890 | int i; | |
2891 | ||
3eaebb75 | 2892 | /* Just reallocate it and fix references to the old one */ |
bd5635a1 | 2893 | |
84ffdec2 JG |
2894 | new = (struct block *) xrealloc ((PTR)b, sizeof(struct block) + |
2895 | (BLOCK_NSYMS(b)-1) * sizeof(struct symbol *)); | |
bd5635a1 | 2896 | |
bd5635a1 RP |
2897 | /* Should chase pointers to old one. Fortunately, that`s just |
2898 | the block`s function and inferior blocks */ | |
3eaebb75 SG |
2899 | if (BLOCK_FUNCTION(new) && SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(new)) == b) |
2900 | SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(new)) = new; | |
bd5635a1 RP |
2901 | for (i = 0; i < BLOCKVECTOR_NBLOCKS(bv); i++) |
2902 | if (BLOCKVECTOR_BLOCK(bv,i) == b) | |
2903 | BLOCKVECTOR_BLOCK(bv,i) = new; | |
2904 | else if (BLOCK_SUPERBLOCK(BLOCKVECTOR_BLOCK(bv,i)) == b) | |
2905 | BLOCK_SUPERBLOCK(BLOCKVECTOR_BLOCK(bv,i)) = new; | |
bd5635a1 RP |
2906 | return new; |
2907 | } | |
2908 | ||
2909 | /* Create a new symbol with printname NAME */ | |
2910 | ||
4ad1963e | 2911 | static struct symbol * |
bd5635a1 RP |
2912 | new_symbol(name) |
2913 | char *name; | |
2914 | { | |
817bc7b8 | 2915 | struct symbol *s = (struct symbol *) |
d747e0af | 2916 | obstack_alloc (¤t_objfile->symbol_obstack, sizeof (struct symbol)); |
bd5635a1 | 2917 | |
84ffdec2 | 2918 | memset ((PTR)s, 0, sizeof (*s)); |
bd5635a1 RP |
2919 | SYMBOL_NAME(s) = name; |
2920 | return s; | |
2921 | } | |
2922 | ||
2923 | /* Create a new type with printname NAME */ | |
2924 | ||
4ad1963e | 2925 | static struct type * |
bd5635a1 RP |
2926 | new_type(name) |
2927 | char *name; | |
2928 | { | |
021959e2 | 2929 | struct type *t; |
bd5635a1 | 2930 | |
021959e2 | 2931 | t = alloc_type (current_objfile); |
bd5635a1 | 2932 | TYPE_NAME(t) = name; |
d747e0af MT |
2933 | TYPE_CPLUS_SPECIFIC(t) = (struct cplus_struct_type *) |
2934 | &cplus_struct_default; | |
bd5635a1 RP |
2935 | return t; |
2936 | } | |
2937 | ||
bd5635a1 RP |
2938 | \f |
2939 | /* Things used for calling functions in the inferior. | |
2940 | These functions are exported to our companion | |
7e258d18 | 2941 | mips-tdep.c file and are here because they play |
bd5635a1 RP |
2942 | with the symbol-table explicitly. */ |
2943 | ||
bd5635a1 RP |
2944 | /* Sigtramp: make sure we have all the necessary information |
2945 | about the signal trampoline code. Since the official code | |
2946 | from MIPS does not do so, we make up that information ourselves. | |
2947 | If they fix the library (unlikely) this code will neutralize itself. */ | |
2948 | ||
d747e0af | 2949 | static void |
bd5635a1 RP |
2950 | fixup_sigtramp() |
2951 | { | |
2952 | struct symbol *s; | |
2953 | struct symtab *st; | |
2954 | struct block *b, *b0; | |
2955 | ||
2956 | sigtramp_address = -1; | |
2957 | ||
2958 | /* We know it is sold as sigvec */ | |
2959 | s = lookup_symbol("sigvec", 0, VAR_NAMESPACE, 0, NULL); | |
2960 | ||
2961 | /* Most programs do not play with signals */ | |
2962 | if (s == 0) | |
4ad1963e SG |
2963 | s = lookup_symbol("_sigtramp", 0, VAR_NAMESPACE, 0, NULL); |
2964 | else | |
2965 | { | |
2966 | b0 = SYMBOL_BLOCK_VALUE(s); | |
bd5635a1 | 2967 | |
4ad1963e SG |
2968 | /* A label of sigvec, to be more precise */ |
2969 | s = lookup_symbol("sigtramp", b0, VAR_NAMESPACE, 0, NULL); | |
2970 | } | |
bd5635a1 RP |
2971 | |
2972 | /* But maybe this program uses its own version of sigvec */ | |
2973 | if (s == 0) | |
2974 | return; | |
2975 | ||
bd5635a1 RP |
2976 | /* Did we or MIPSco fix the library ? */ |
2977 | if (SYMBOL_CLASS(s) == LOC_BLOCK) | |
4ad1963e SG |
2978 | { |
2979 | sigtramp_address = BLOCK_START(SYMBOL_BLOCK_VALUE(s)); | |
2980 | sigtramp_end = BLOCK_END(SYMBOL_BLOCK_VALUE(s)); | |
2981 | return; | |
2982 | } | |
2983 | ||
2984 | sigtramp_address = SYMBOL_VALUE(s); | |
2985 | sigtramp_end = sigtramp_address + 0x88; /* black magic */ | |
bd5635a1 RP |
2986 | |
2987 | /* But what symtab does it live in ? */ | |
2988 | st = find_pc_symtab(SYMBOL_VALUE(s)); | |
2989 | ||
2990 | /* | |
2991 | * Ok, there goes the fix: turn it into a procedure, with all the | |
2992 | * needed info. Note we make it a nested procedure of sigvec, | |
2993 | * which is the way the (assembly) code is actually written. | |
2994 | */ | |
2995 | SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; | |
2996 | SYMBOL_CLASS(s) = LOC_BLOCK; | |
021959e2 | 2997 | SYMBOL_TYPE(s) = init_type(TYPE_CODE_FUNC, 4, 0, 0, (struct objfile *) NULL); |
bd5635a1 RP |
2998 | TYPE_TARGET_TYPE(SYMBOL_TYPE(s)) = builtin_type_void; |
2999 | ||
3000 | /* Need a block to allocate .gdbinfo. in */ | |
3001 | b = new_block(1); | |
3002 | SYMBOL_BLOCK_VALUE(s) = b; | |
3003 | BLOCK_START(b) = sigtramp_address; | |
3004 | BLOCK_END(b) = sigtramp_end; | |
3005 | BLOCK_FUNCTION(b) = s; | |
3006 | BLOCK_SUPERBLOCK(b) = BLOCK_SUPERBLOCK(b0); | |
3007 | add_block(b, st); | |
3008 | sort_blocks(st); | |
3009 | ||
3010 | /* Make a .gdbinfo. for it */ | |
3011 | { | |
3012 | struct mips_extra_func_info *e = | |
3013 | (struct mips_extra_func_info *) | |
3014 | xzalloc(sizeof(struct mips_extra_func_info)); | |
3015 | ||
3016 | e->numargs = 0; /* the kernel thinks otherwise */ | |
3017 | /* align_longword(sigcontext + SIGFRAME) */ | |
d1bb1d41 SG |
3018 | e->pdr.frameoffset = 0x150; |
3019 | e->pdr.framereg = SP_REGNUM; | |
3020 | e->pdr.pcreg = 31; | |
3021 | e->pdr.regmask = -2; | |
3022 | e->pdr.regoffset = -(41 * sizeof(int)); | |
3023 | e->pdr.fregmask = -1; | |
3024 | e->pdr.fregoffset = -(37 * sizeof(int)); | |
3025 | e->pdr.isym = (long)s; | |
bd5635a1 | 3026 | |
84ffdec2 | 3027 | current_objfile = st->objfile; /* Keep new_symbol happy */ |
bd5635a1 RP |
3028 | s = new_symbol(".gdbinfo."); |
3029 | SYMBOL_VALUE(s) = (int) e; | |
3030 | SYMBOL_NAMESPACE(s) = LABEL_NAMESPACE; | |
3031 | SYMBOL_CLASS(s) = LOC_CONST; | |
3032 | SYMBOL_TYPE(s) = builtin_type_void; | |
84ffdec2 | 3033 | current_objfile = NULL; |
bd5635a1 RP |
3034 | } |
3035 | ||
3036 | BLOCK_SYM(b,BLOCK_NSYMS(b)++) = s; | |
3037 | } | |
bd5635a1 RP |
3038 | \f |
3039 | /* Initialization */ | |
3040 | ||
80d68b1d FF |
3041 | static struct sym_fns ecoff_sym_fns = |
3042 | { | |
3043 | "ecoff", /* sym_name: name or name prefix of BFD target type */ | |
3044 | 5, /* sym_namelen: number of significant sym_name chars */ | |
3045 | mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */ | |
3046 | mipscoff_symfile_init,/* sym_init: read initial info, setup for sym_read() */ | |
3047 | mipscoff_symfile_read,/* sym_read: read a symbol file into symtab */ | |
3048 | mipscoff_symfile_finish,/* sym_finish: finished with file, cleanup */ | |
3049 | NULL /* next: pointer to next struct sym_fns */ | |
3050 | }; | |
3051 | ||
bd5635a1 | 3052 | |
4ad1963e | 3053 | void |
bd5635a1 RP |
3054 | _initialize_mipsread () |
3055 | { | |
3056 | add_symtab_fns (&ecoff_sym_fns); | |
3057 | ||
bd5635a1 | 3058 | /* Missing basic types */ |
4a11eef2 | 3059 | |
021959e2 | 3060 | builtin_type_string = |
4a11eef2 FF |
3061 | init_type(TYPE_CODE_PASCAL_ARRAY, |
3062 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
b303297a | 3063 | 0, "string", |
4a11eef2 | 3064 | (struct objfile *) NULL); |
021959e2 JG |
3065 | builtin_type_complex = |
3066 | init_type(TYPE_CODE_FLT, | |
4a11eef2 | 3067 | TARGET_COMPLEX_BIT / TARGET_CHAR_BIT, |
b303297a | 3068 | 0, "complex", |
021959e2 JG |
3069 | (struct objfile *) NULL); |
3070 | builtin_type_double_complex = | |
3071 | init_type(TYPE_CODE_FLT, | |
4a11eef2 | 3072 | TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT, |
b303297a | 3073 | 0, "double complex", |
021959e2 JG |
3074 | (struct objfile *) NULL); |
3075 | builtin_type_fixed_dec = | |
4a11eef2 FF |
3076 | init_type(TYPE_CODE_INT, |
3077 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
b303297a | 3078 | 0, "fixed decimal", |
021959e2 JG |
3079 | (struct objfile *) NULL); |
3080 | builtin_type_float_dec = | |
4a11eef2 FF |
3081 | init_type(TYPE_CODE_FLT, |
3082 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
b303297a | 3083 | 0, "floating decimal", |
021959e2 | 3084 | (struct objfile *) NULL); |
bd5635a1 | 3085 | } |