1 /* Read hp debug symbols and convert to internal format, for GDB.
2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3    2002, 2003, 2004 Free Software Foundation, Inc.
4 
5    This file is part of GDB.
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program; if not, write to the Free Software
19    Foundation, Inc., 59 Temple Place - Suite 330,
20    Boston, MA 02111-1307, USA.
21 
22    Written by the Center for Software Science at the University of Utah
23    and by Cygnus Support.  */
24 
25 #include "defs.h"
26 #include "bfd.h"
27 #include "gdb_string.h"
28 #include "hp-symtab.h"
29 #include "syms.h"
30 #include "symtab.h"
31 #include "symfile.h"
32 #include "objfiles.h"
33 #include "buildsym.h"
34 #include "complaints.h"
35 #include "gdb-stabs.h"
36 #include "gdbtypes.h"
37 #include "demangle.h"
38 #include "somsolib.h"
39 #include "gdb_assert.h"
40 #include "hppa-tdep.h"
41 
42 /* Private information attached to an objfile which we use to find
43    and internalize the HP C debug symbols within that objfile.  */
44 
45 struct hpread_symfile_info
46   {
47     /* The contents of each of the debug sections (there are 4 of them).  */
48     char *gntt;
49     char *lntt;
50     char *slt;
51     char *vt;
52 
53     /* We keep the size of the $VT$ section for range checking.  */
54     unsigned int vt_size;
55 
56     /* Some routines still need to know the number of symbols in the
57        main debug sections ($LNTT$ and $GNTT$). */
58     unsigned int lntt_symcount;
59     unsigned int gntt_symcount;
60 
61     /* To keep track of all the types we've processed.  */
62     struct type **dntt_type_vector;
63     int dntt_type_vector_length;
64 
65     /* Keeps track of the beginning of a range of source lines.  */
66     sltpointer sl_index;
67 
68     /* Some state variables we'll need.  */
69     int within_function;
70 
71     /* Keep track of the current function's address.  We may need to look
72        up something based on this address.  */
73     unsigned int current_function_value;
74   };
75 
76 /* Accessor macros to get at the fields.  */
77 #define HPUX_SYMFILE_INFO(o) \
78   ((struct hpread_symfile_info *)((o)->sym_private))
79 #define GNTT(o)                 (HPUX_SYMFILE_INFO(o)->gntt)
80 #define LNTT(o)                 (HPUX_SYMFILE_INFO(o)->lntt)
81 #define SLT(o)                  (HPUX_SYMFILE_INFO(o)->slt)
82 #define VT(o)                   (HPUX_SYMFILE_INFO(o)->vt)
83 #define VT_SIZE(o)              (HPUX_SYMFILE_INFO(o)->vt_size)
84 #define LNTT_SYMCOUNT(o)        (HPUX_SYMFILE_INFO(o)->lntt_symcount)
85 #define GNTT_SYMCOUNT(o)        (HPUX_SYMFILE_INFO(o)->gntt_symcount)
86 #define DNTT_TYPE_VECTOR(o)     (HPUX_SYMFILE_INFO(o)->dntt_type_vector)
87 #define DNTT_TYPE_VECTOR_LENGTH(o) \
88   (HPUX_SYMFILE_INFO(o)->dntt_type_vector_length)
89 #define SL_INDEX(o)             (HPUX_SYMFILE_INFO(o)->sl_index)
90 #define WITHIN_FUNCTION(o)      (HPUX_SYMFILE_INFO(o)->within_function)
91 #define CURRENT_FUNCTION_VALUE(o) (HPUX_SYMFILE_INFO(o)->current_function_value)
92 
93 
94 /* We put a pointer to this structure in the read_symtab_private field
95    of the psymtab.  */
96 
97 struct symloc
98   {
99     /* The offset within the file symbol table of first local symbol for
100        this file.  */
101 
102     int ldsymoff;
103 
104     /* Length (in bytes) of the section of the symbol table devoted to
105        this file's symbols (actually, the section bracketed may contain
106        more than just this file's symbols).  If ldsymlen is 0, the only
107        reason for this thing's existence is the dependency list.
108        Nothing else will happen when it is read in.  */
109 
110     int ldsymlen;
111   };
112 
113 #define LDSYMOFF(p) (((struct symloc *)((p)->read_symtab_private))->ldsymoff)
114 #define LDSYMLEN(p) (((struct symloc *)((p)->read_symtab_private))->ldsymlen)
115 #define SYMLOC(p) ((struct symloc *)((p)->read_symtab_private))
116 
117 /* Complaints about the symbols we have encountered.  */
118 static void
lbrac_unmatched_complaint(int arg1)119 lbrac_unmatched_complaint (int arg1)
120 {
121   complaint (&symfile_complaints, "unmatched N_LBRAC before symtab pos %d",
122 	     arg1);
123 }
124 
125 static void
lbrac_mismatch_complaint(int arg1)126 lbrac_mismatch_complaint (int arg1)
127 {
128   complaint (&symfile_complaints,
129 	     "N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", arg1);
130 }
131 
132 /* To generate dumping code, uncomment this define.  The dumping
133    itself is controlled by routine-local statics called "dumping". */
134 /* #define DUMPING         1 */
135 
136 /* To use the quick look-up tables, uncomment this define. */
137 #define QUICK_LOOK_UP      1
138 
139 /* To call PXDB to process un-processed files, uncomment this define. */
140 #define USE_PXDB           1
141 
142 /* Forward procedure declarations */
143 
144 /* Used in somread.c.  */
145 void hpread_symfile_init (struct objfile *);
146 
147 void do_pxdb (bfd *);
148 
149 void hpread_build_psymtabs (struct objfile *, int);
150 
151 void hpread_symfile_finish (struct objfile *);
152 
153 static void set_namestring (union dnttentry *sym, char **namep,
154                             struct objfile *objfile);
155 
156 static union dnttentry *hpread_get_gntt (int, struct objfile *);
157 
158 static union dnttentry *hpread_get_lntt (int index, struct objfile *objfile);
159 
160 
161 static unsigned long hpread_get_textlow (int, int, struct objfile *, int);
162 
163 static struct partial_symtab *hpread_start_psymtab
164   (struct objfile *, char *, CORE_ADDR, int,
165    struct partial_symbol **, struct partial_symbol **);
166 
167 static struct partial_symtab *hpread_end_psymtab
168   (struct partial_symtab *, char **, int, int, CORE_ADDR,
169    struct partial_symtab **, int);
170 
171 static unsigned long hpread_get_scope_start (sltpointer, struct objfile *);
172 
173 static unsigned long hpread_get_line (sltpointer, struct objfile *);
174 
175 static CORE_ADDR hpread_get_location (sltpointer, struct objfile *);
176 
177 static int hpread_has_name (enum dntt_entry_type kind);
178 
179 static void hpread_psymtab_to_symtab_1 (struct partial_symtab *);
180 
181 static void hpread_psymtab_to_symtab (struct partial_symtab *);
182 
183 static struct symtab *hpread_expand_symtab
184   (struct objfile *, int, int, CORE_ADDR, int,
185    struct section_offsets *, char *);
186 
187 static int hpread_type_translate (dnttpointer);
188 
189 static struct type **hpread_lookup_type (dnttpointer, struct objfile *);
190 
191 static struct type *hpread_alloc_type (dnttpointer, struct objfile *);
192 
193 static struct type *hpread_read_enum_type
194   (dnttpointer, union dnttentry *, struct objfile *);
195 
196 static struct type *hpread_read_function_type
197   (dnttpointer, union dnttentry *, struct objfile *, int);
198 
199 static struct type *hpread_read_doc_function_type
200   (dnttpointer, union dnttentry *, struct objfile *, int);
201 
202 static struct type *hpread_read_struct_type
203   (dnttpointer, union dnttentry *, struct objfile *);
204 
205 static struct type *hpread_get_nth_template_arg (struct objfile *, int);
206 
207 static struct type *hpread_read_templ_arg_type
208   (dnttpointer, union dnttentry *, struct objfile *, char *);
209 
210 static struct type *hpread_read_set_type
211   (dnttpointer, union dnttentry *, struct objfile *);
212 
213 static struct type *hpread_read_array_type
214   (dnttpointer, union dnttentry *dn_bufp, struct objfile *objfile);
215 
216 static struct type *hpread_read_subrange_type
217   (dnttpointer, union dnttentry *, struct objfile *);
218 
219 static struct type *hpread_type_lookup (dnttpointer, struct objfile *);
220 
221 static sltpointer hpread_record_lines
222   (struct subfile *, sltpointer, sltpointer, struct objfile *, CORE_ADDR);
223 
224 static void hpread_process_one_debug_symbol
225   (union dnttentry *, char *, struct section_offsets *,
226    struct objfile *, CORE_ADDR, int, char *, int, int *);
227 
228 static int hpread_get_scope_depth (union dnttentry *, struct objfile *, int);
229 
230 static void fix_static_member_physnames
231   (struct type *, char *, struct objfile *);
232 
233 static void fixup_class_method_type
234   (struct type *, struct type *, struct objfile *);
235 
236 static void hpread_adjust_bitoffsets (struct type *, int);
237 
238 static int hpread_adjust_stack_address (CORE_ADDR func_addr);
239 
240 static dnttpointer hpread_get_next_skip_over_anon_unions
241   (int, dnttpointer, union dnttentry **, struct objfile *);
242 
243 
244 /* Static used to indicate a class type that requires a
245    fix-up of one of its method types */
246 static struct type *fixup_class = NULL;
247 
248 /* Static used to indicate the method type that is to be
249    used to fix-up the type for fixup_class */
250 static struct type *fixup_method = NULL;
251 
252 #ifdef USE_PXDB
253 
254 /* NOTE use of system files!  May not be portable. */
255 
256 #define PXDB_SVR4 "/opt/langtools/bin/pxdb"
257 #define PXDB_BSD  "/usr/bin/pxdb"
258 
259 #include <stdlib.h>
260 #include "gdb_string.h"
261 
262 /* check for the existence of a file, given its full pathname */
263 static int
file_exists(char * filename)264 file_exists (char *filename)
265 {
266   if (filename)
267     return (access (filename, F_OK) == 0);
268   return 0;
269 }
270 
271 
272 /* Translate from the "hp_language" enumeration in hp-symtab.h
273    used in the debug info to gdb's generic enumeration in defs.h. */
274 static enum language
trans_lang(enum hp_language in_lang)275 trans_lang (enum hp_language in_lang)
276 {
277   if (in_lang == HP_LANGUAGE_C)
278     return language_c;
279 
280   else if (in_lang == HP_LANGUAGE_CPLUSPLUS)
281     return language_cplus;
282 
283   else if (in_lang == HP_LANGUAGE_FORTRAN)
284     return language_fortran;
285 
286   else
287     return language_unknown;
288 }
289 
290 static char main_string[] = "main";
291 
292 
293 /* Given the native debug symbol SYM, set NAMEP to the name associated
294    with the debug symbol.  Note we may be called with a debug symbol which
295    has no associated name, in that case we return an empty string.  */
296 
297 static void
set_namestring(union dnttentry * sym,char ** namep,struct objfile * objfile)298 set_namestring (union dnttentry *sym, char **namep, struct objfile *objfile)
299 {
300   /* Note that we "know" that the name for any symbol is always in the same
301      place.  Hence we don't have to conditionalize on the symbol type.  */
302   if (! hpread_has_name (sym->dblock.kind))
303     *namep = "";
304   else if ((unsigned) sym->dsfile.name >= VT_SIZE (objfile))
305     {
306       complaint (&symfile_complaints, "bad string table offset in symbol %d",
307 		 symnum);
308       *namep = "";
309     }
310   else
311     *namep = sym->dsfile.name + VT (objfile);
312 }
313 
314 /* Call PXDB to process our file.
315 
316    Approach copied from DDE's "dbgk_run_pxdb".  Note: we
317    don't check for BSD location of pxdb, nor for existence
318    of pxdb itself, etc.
319 
320    NOTE: uses system function and string functions directly.
321 
322    Return value: 1 if ok, 0 if not */
323 static int
hpread_call_pxdb(const char * file_name)324 hpread_call_pxdb (const char *file_name)
325 {
326   char *p;
327   int status;
328   int retval;
329 
330   if (file_exists (PXDB_SVR4))
331     {
332       p = xmalloc (strlen (PXDB_SVR4) + strlen (file_name) + 2);
333       strcpy (p, PXDB_SVR4);
334       strcat (p, " ");
335       strcat (p, file_name);
336 
337       warning ("File not processed by pxdb--about to process now.\n");
338       status = system (p);
339 
340       retval = (status == 0);
341     }
342   else
343     {
344       warning ("pxdb not found at standard location: /opt/langtools/bin\ngdb will not be able to debug %s.\nPlease install pxdb at the above location and then restart gdb.\nYou can also run pxdb on %s with the command\n\"pxdb %s\" and then restart gdb.", file_name, file_name, file_name);
345 
346       retval = 0;
347     }
348   return retval;
349 }				/* hpread_call_pxdb */
350 
351 
352 /* Return 1 if the file turns out to need pre-processing
353    by PXDB, and we have thus called PXDB to do this processing
354    and the file therefore needs to be re-loaded.  Otherwise
355    return 0. */
356 static int
hpread_pxdb_needed(bfd * sym_bfd)357 hpread_pxdb_needed (bfd *sym_bfd)
358 {
359   asection *pinfo_section, *debug_section, *header_section;
360   unsigned int do_pxdb;
361   char *buf;
362   bfd_size_type header_section_size;
363 
364   unsigned long tmp;
365   unsigned int pxdbed;
366 
367   header_section = bfd_get_section_by_name (sym_bfd, "$HEADER$");
368   if (!header_section)
369     {
370       return 0;			/* No header at all, can't recover... */
371     }
372 
373   debug_section = bfd_get_section_by_name (sym_bfd, "$DEBUG$");
374   pinfo_section = bfd_get_section_by_name (sym_bfd, "$PINFO$");
375 
376   if (pinfo_section && !debug_section)
377     {
378       /* Debug info with DOC, has different header format.
379          this only happens if the file was pxdbed and compiled optimized
380          otherwise the PINFO section is not there. */
381       header_section_size = bfd_section_size (objfile->obfd, header_section);
382 
383       if (header_section_size == (bfd_size_type) sizeof (DOC_info_PXDB_header))
384 	{
385 	  buf = alloca (sizeof (DOC_info_PXDB_header));
386 	  memset (buf, 0, sizeof (DOC_info_PXDB_header));
387 
388 	  if (!bfd_get_section_contents (sym_bfd,
389 					 header_section,
390 					 buf, 0,
391 					 header_section_size))
392 	    error ("bfd_get_section_contents\n");
393 
394 	  tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 4));
395 	  pxdbed = (tmp >> 31) & 0x1;
396 
397 	  if (!pxdbed)
398 	    error ("file debug header info invalid\n");
399 	  do_pxdb = 0;
400 	}
401 
402       else
403 	error ("invalid $HEADER$ size in executable \n");
404     }
405 
406   else
407     {
408 
409       /* this can be three different cases:
410          1. pxdbed and not doc
411          - DEBUG and HEADER sections are there
412          - header is PXDB_header type
413          - pxdbed flag is set to 1
414 
415          2. not pxdbed and doc
416          - DEBUG and HEADER  sections are there
417          - header is DOC_info_header type
418          - pxdbed flag is set to 0
419 
420          3. not pxdbed and not doc
421          - DEBUG and HEADER sections are there
422          - header is XDB_header type
423          - pxdbed flag is set to 0
424 
425          NOTE: the pxdbed flag is meaningful also in the not
426          already pxdb processed version of the header,
427          because in case on non-already processed by pxdb files
428          that same bit in the header would be always zero.
429          Why? Because the bit is the leftmost bit of a word
430          which contains a 'length' which is always a positive value
431          so that bit is never set to 1 (otherwise it would be negative)
432 
433          Given the above, we have two choices : either we ignore the
434          size of the header itself and just look at the pxdbed field,
435          or we check the size and then we (for safety and paranoia related
436          issues) check the bit.
437          The first solution is used by DDE, the second by PXDB itself.
438          I am using the second one here, because I already wrote it,
439          and it is the end of a long day.
440          Also, using the first approach would still involve size issues
441          because we need to read in the contents of the header section, and
442          give the correct amount of stuff we want to read to the
443          get_bfd_section_contents function.  */
444 
445       /* decide which case depending on the size of the header section.
446          The size is as defined in hp-symtab.h  */
447 
448       header_section_size = bfd_section_size (objfile->obfd, header_section);
449 
450       if (header_section_size == (bfd_size_type) sizeof (PXDB_header))	/* pxdb and not doc */
451 	{
452 
453 	  buf = alloca (sizeof (PXDB_header));
454 	  memset (buf, 0, sizeof (PXDB_header));
455 	  if (!bfd_get_section_contents (sym_bfd,
456 					 header_section,
457 					 buf, 0,
458 					 header_section_size))
459 	    error ("bfd_get_section_contents\n");
460 
461 	  tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 3));
462 	  pxdbed = (tmp >> 31) & 0x1;
463 
464 	  if (pxdbed)
465 	    do_pxdb = 0;
466 	  else
467 	    error ("file debug header invalid\n");
468 	}
469       else			/*not pxdbed and doc OR not pxdbed and non doc */
470 	do_pxdb = 1;
471     }
472 
473   if (do_pxdb)
474     {
475       return 1;
476     }
477   else
478     {
479       return 0;
480     }
481 }				/* hpread_pxdb_needed */
482 
483 #endif
484 
485 /* Check whether the file needs to be preprocessed by pxdb.
486    If so, call pxdb. */
487 
488 void
do_pxdb(bfd * sym_bfd)489 do_pxdb (bfd *sym_bfd)
490 {
491   /* The following code is HP-specific.  The "right" way of
492      doing this is unknown, but we bet would involve a target-
493      specific pre-file-load check using a generic mechanism. */
494 
495   /* This code will not be executed if the file is not in SOM
496      format (i.e. if compiled with gcc) */
497   if (hpread_pxdb_needed (sym_bfd))
498     {
499       /*This file has not been pre-processed. Preprocess now */
500 
501       if (hpread_call_pxdb (sym_bfd->filename))
502 	{
503 	  /* The call above has changed the on-disk file,
504 	     we can close the file anyway, because the
505 	     symbols will be reread in when the target is run */
506 	  bfd_close (sym_bfd);
507 	}
508     }
509 }
510 
511 
512 
513 #ifdef QUICK_LOOK_UP
514 
515 /* Code to handle quick lookup-tables follows. */
516 
517 
518 /* Some useful macros */
519 #define VALID_FILE(i)   ((i) < pxdb_header_p->fd_entries)
520 #define VALID_MODULE(i) ((i) < pxdb_header_p->md_entries)
521 #define VALID_PROC(i)   ((i) < pxdb_header_p->pd_entries)
522 #define VALID_CLASS(i)  ((i) < pxdb_header_p->cd_entries)
523 
524 #define FILE_START(i)    (qFD[i].adrStart)
525 #define MODULE_START(i) (qMD[i].adrStart)
526 #define PROC_START(i)    (qPD[i].adrStart)
527 
528 #define FILE_END(i)   (qFD[i].adrEnd)
529 #define MODULE_END(i) (qMD[i].adrEnd)
530 #define PROC_END(i)   (qPD[i].adrEnd)
531 
532 #define FILE_ISYM(i)   (qFD[i].isym)
533 #define MODULE_ISYM(i) (qMD[i].isym)
534 #define PROC_ISYM(i)   (qPD[i].isym)
535 
536 #define VALID_CURR_FILE    (curr_fd < pxdb_header_p->fd_entries)
537 #define VALID_CURR_MODULE  (curr_md < pxdb_header_p->md_entries)
538 #define VALID_CURR_PROC    (curr_pd < pxdb_header_p->pd_entries)
539 #define VALID_CURR_CLASS   (curr_cd < pxdb_header_p->cd_entries)
540 
541 #define CURR_FILE_START     (qFD[curr_fd].adrStart)
542 #define CURR_MODULE_START   (qMD[curr_md].adrStart)
543 #define CURR_PROC_START     (qPD[curr_pd].adrStart)
544 
545 #define CURR_FILE_END    (qFD[curr_fd].adrEnd)
546 #define CURR_MODULE_END  (qMD[curr_md].adrEnd)
547 #define CURR_PROC_END    (qPD[curr_pd].adrEnd)
548 
549 #define CURR_FILE_ISYM    (qFD[curr_fd].isym)
550 #define CURR_MODULE_ISYM  (qMD[curr_md].isym)
551 #define CURR_PROC_ISYM    (qPD[curr_pd].isym)
552 
553 #define TELL_OBJFILE                                      \
554             do {                                          \
555                if( !told_objfile ) {                      \
556                    told_objfile = 1;                      \
557                    warning ("\nIn object file \"%s\":\n", \
558                             objfile->name);               \
559                }                                          \
560             } while (0)
561 
562 
563 
564 /* Keeping track of the start/end symbol table (LNTT) indices of
565    psymtabs created so far */
566 
567 typedef struct
568 {
569   int start;
570   int end;
571 }
572 pst_syms_struct;
573 
574 static pst_syms_struct *pst_syms_array = 0;
575 
576 static int pst_syms_count = 0;
577 static int pst_syms_size = 0;
578 
579 /* used by the TELL_OBJFILE macro */
580 static int told_objfile = 0;
581 
582 /* Set up psymtab symbol index stuff */
583 static void
init_pst_syms(void)584 init_pst_syms (void)
585 {
586   pst_syms_count = 0;
587   pst_syms_size = 20;
588   pst_syms_array = (pst_syms_struct *) xmalloc (20 * sizeof (pst_syms_struct));
589 }
590 
591 /* Clean up psymtab symbol index stuff */
592 static void
clear_pst_syms(void)593 clear_pst_syms (void)
594 {
595   pst_syms_count = 0;
596   pst_syms_size = 0;
597   xfree (pst_syms_array);
598   pst_syms_array = 0;
599 }
600 
601 /* Add information about latest psymtab to symbol index table */
602 static void
record_pst_syms(int start_sym,int end_sym)603 record_pst_syms (int start_sym, int end_sym)
604 {
605   if (++pst_syms_count > pst_syms_size)
606     {
607       pst_syms_array = (pst_syms_struct *) xrealloc (pst_syms_array,
608 			      2 * pst_syms_size * sizeof (pst_syms_struct));
609       pst_syms_size *= 2;
610     }
611   pst_syms_array[pst_syms_count - 1].start = start_sym;
612   pst_syms_array[pst_syms_count - 1].end = end_sym;
613 }
614 
615 /* Find a suitable symbol table index which can serve as the upper
616    bound of a psymtab that starts at INDEX
617 
618    This scans backwards in the psymtab symbol index table to find a
619    "hole" in which the given index can fit.  This is a heuristic!!
620    We don't search the entire table to check for multiple holes,
621    we don't care about overlaps, etc.
622 
623    Return 0 => not found */
624 static int
find_next_pst_start(int index)625 find_next_pst_start (int index)
626 {
627   int i;
628 
629   for (i = pst_syms_count - 1; i >= 0; i--)
630     if (pst_syms_array[i].end <= index)
631       return (i == pst_syms_count - 1) ? 0 : pst_syms_array[i + 1].start - 1;
632 
633   if (pst_syms_array[0].start > index)
634     return pst_syms_array[0].start - 1;
635 
636   return 0;
637 }
638 
639 
640 
641 /* Utility functions to find the ending symbol index for a psymtab */
642 
643 /* Find the next file entry that begins beyond INDEX, and return
644    its starting symbol index - 1.
645    QFD is the file table, CURR_FD is the file entry from where to start,
646    PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).
647 
648    Return 0 => not found */
649 static int
find_next_file_isym(int index,quick_file_entry * qFD,int curr_fd,PXDB_header_ptr pxdb_header_p)650 find_next_file_isym (int index, quick_file_entry *qFD, int curr_fd,
651 		     PXDB_header_ptr pxdb_header_p)
652 {
653   while (VALID_CURR_FILE)
654     {
655       if (CURR_FILE_ISYM >= index)
656 	return CURR_FILE_ISYM - 1;
657       curr_fd++;
658     }
659   return 0;
660 }
661 
662 /* Find the next procedure entry that begins beyond INDEX, and return
663    its starting symbol index - 1.
664    QPD is the procedure table, CURR_PD is the proc entry from where to start,
665    PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).
666 
667    Return 0 => not found */
668 static int
find_next_proc_isym(int index,quick_procedure_entry * qPD,int curr_pd,PXDB_header_ptr pxdb_header_p)669 find_next_proc_isym (int index, quick_procedure_entry *qPD, int curr_pd,
670 		     PXDB_header_ptr pxdb_header_p)
671 {
672   while (VALID_CURR_PROC)
673     {
674       if (CURR_PROC_ISYM >= index)
675 	return CURR_PROC_ISYM - 1;
676       curr_pd++;
677     }
678   return 0;
679 }
680 
681 /* Find the next module entry that begins beyond INDEX, and return
682    its starting symbol index - 1.
683    QMD is the module table, CURR_MD is the modue entry from where to start,
684    PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).
685 
686    Return 0 => not found */
687 static int
find_next_module_isym(int index,quick_module_entry * qMD,int curr_md,PXDB_header_ptr pxdb_header_p)688 find_next_module_isym (int index, quick_module_entry *qMD, int curr_md,
689 		       PXDB_header_ptr pxdb_header_p)
690 {
691   while (VALID_CURR_MODULE)
692     {
693       if (CURR_MODULE_ISYM >= index)
694 	return CURR_MODULE_ISYM - 1;
695       curr_md++;
696     }
697   return 0;
698 }
699 
700 /* Scan and record partial symbols for all functions starting from index
701    pointed to by CURR_PD_P, and between code addresses START_ADR and END_ADR.
702    Other parameters are explained in comments below. */
703 
704 /* This used to be inline in hpread_quick_traverse, but now that we do
705    essentially the same thing for two different cases (modules and
706    module-less files), it's better organized in a separate routine,
707    although it does take lots of arguments.  pai/1997-10-08
708 
709    CURR_PD_P is the pointer to the current proc index. QPD is the
710    procedure quick lookup table.  MAX_PROCS is the number of entries
711    in the proc. table.  START_ADR is the beginning of the code range
712    for the current psymtab.  end_adr is the end of the code range for
713    the current psymtab.  PST is the current psymtab.  VT_bits is
714    a pointer to the strings table of SOM debug space.  OBJFILE is
715    the current object file. */
716 
717 static int
scan_procs(int * curr_pd_p,quick_procedure_entry * qPD,int max_procs,CORE_ADDR start_adr,CORE_ADDR end_adr,struct partial_symtab * pst,char * vt_bits,struct objfile * objfile)718 scan_procs (int *curr_pd_p, quick_procedure_entry *qPD, int max_procs,
719 	    CORE_ADDR start_adr, CORE_ADDR end_adr, struct partial_symtab *pst,
720 	    char *vt_bits, struct objfile *objfile)
721 {
722   union dnttentry *dn_bufp;
723   int symbol_count = 0;		/* Total number of symbols in this psymtab */
724   int curr_pd = *curr_pd_p;	/* Convenience variable -- avoid dereferencing pointer all the time */
725 
726 #ifdef DUMPING
727   /* Turn this on for lots of debugging information in this routine */
728   static int dumping = 0;
729 #endif
730 
731 #ifdef DUMPING
732   if (dumping)
733     {
734       printf ("Scan_procs called, addresses %x to %x, proc %x\n", start_adr, end_adr, curr_pd);
735     }
736 #endif
737 
738   while ((CURR_PROC_START <= end_adr) && (curr_pd < max_procs))
739     {
740 
741       char *rtn_name;		/* mangled name */
742       char *rtn_dem_name;	/* qualified demangled name */
743       char *class_name;
744       int class;
745 
746       if ((trans_lang ((enum hp_language) qPD[curr_pd].language) == language_cplus) &&
747 	  vt_bits[(long) qPD[curr_pd].sbAlias])		/* not a null string */
748 	{
749 	  /* Get mangled name for the procedure, and demangle it */
750 	  rtn_name = &vt_bits[(long) qPD[curr_pd].sbAlias];
751 	  rtn_dem_name = cplus_demangle (rtn_name, DMGL_ANSI | DMGL_PARAMS);
752 	}
753       else
754 	{
755 	  rtn_name = &vt_bits[(long) qPD[curr_pd].sbProc];
756 	  rtn_dem_name = NULL;
757 	}
758 
759       /* Hack to get around HP C/C++ compilers' insistence on providing
760          "_MAIN_" as an alternate name for "main" */
761       if ((strcmp (rtn_name, "_MAIN_") == 0) &&
762 	  (strcmp (&vt_bits[(long) qPD[curr_pd].sbProc], "main") == 0))
763 	rtn_dem_name = rtn_name = main_string;
764 
765 #ifdef DUMPING
766       if (dumping)
767 	{
768 	  printf ("..add %s (demangled %s), index %x to this psymtab\n", rtn_name, rtn_dem_name, curr_pd);
769 	}
770 #endif
771 
772       /* Check for module-spanning routines. */
773       if (CURR_PROC_END > end_adr)
774 	{
775 	  TELL_OBJFILE;
776 	  warning ("Procedure \"%s\" [0x%x] spans file or module boundaries.", rtn_name, curr_pd);
777 	}
778 
779       /* Add this routine symbol to the list in the objfile.
780          Unfortunately we have to go to the LNTT to determine the
781          correct list to put it on. An alternative (which the
782          code used to do) would be to not check and always throw
783          it on the "static" list. But if we go that route, then
784          symbol_lookup() needs to be tweaked a bit to account
785          for the fact that the function might not be found on
786          the correct list in the psymtab. - RT */
787       dn_bufp = hpread_get_lntt (qPD[curr_pd].isym, objfile);
788       if (dn_bufp->dfunc.global)
789 	add_psymbol_with_dem_name_to_list (rtn_name,
790 					   strlen (rtn_name),
791 					   rtn_dem_name,
792 					   strlen (rtn_dem_name),
793 					   VAR_DOMAIN,
794 					   LOC_BLOCK,	/* "I am a routine"        */
795 					   &objfile->global_psymbols,
796 					   (qPD[curr_pd].adrStart +	/* Starting address of rtn */
797 				 ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))),
798 					   0,	/* core addr?? */
799 		      trans_lang ((enum hp_language) qPD[curr_pd].language),
800 					   objfile);
801       else
802 	add_psymbol_with_dem_name_to_list (rtn_name,
803 					   strlen (rtn_name),
804 					   rtn_dem_name,
805 					   strlen (rtn_dem_name),
806 					   VAR_DOMAIN,
807 					   LOC_BLOCK,	/* "I am a routine"        */
808 					   &objfile->static_psymbols,
809 					   (qPD[curr_pd].adrStart +	/* Starting address of rtn */
810 				 ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))),
811 					   0,	/* core addr?? */
812 		      trans_lang ((enum hp_language) qPD[curr_pd].language),
813 					   objfile);
814 
815       symbol_count++;
816       *curr_pd_p = ++curr_pd;	/* bump up count & reflect in caller */
817     }				/* loop over procedures */
818 
819 #ifdef DUMPING
820   if (dumping)
821     {
822       if (symbol_count == 0)
823 	printf ("Scan_procs: no symbols found!\n");
824     }
825 #endif
826 
827   return symbol_count;
828 }
829 
830 
831 /* Traverse the quick look-up tables, building a set of psymtabs.
832 
833    This constructs a psymtab for modules and files in the quick lookup
834    tables.
835 
836    Mostly, modules correspond to compilation units, so we try to
837    create psymtabs that correspond to modules; however, in some cases
838    a file can result in a compiled object which does not have a module
839    entry for it, so in such cases we create a psymtab for the file.  */
840 
841 static int
hpread_quick_traverse(struct objfile * objfile,char * gntt_bits,char * vt_bits,PXDB_header_ptr pxdb_header_p)842 hpread_quick_traverse (struct objfile *objfile, char *gntt_bits,
843 		       char *vt_bits, PXDB_header_ptr pxdb_header_p)
844 {
845   struct partial_symtab *pst;
846 
847   char *addr;
848 
849   quick_procedure_entry *qPD;
850   quick_file_entry *qFD;
851   quick_module_entry *qMD;
852   quick_class_entry *qCD;
853 
854   int idx;
855   int i;
856   CORE_ADDR start_adr;		/* current psymtab's starting code addr   */
857   CORE_ADDR end_adr;		/* current psymtab's ending code addr     */
858   CORE_ADDR next_mod_adr;	/* next module's starting code addr    */
859   int curr_pd;			/* current procedure */
860   int curr_fd;			/* current file      */
861   int curr_md;			/* current module    */
862   int start_sym;		/* current psymtab's starting symbol index */
863   int end_sym;			/* current psymtab's ending symbol index   */
864   int max_LNTT_sym_index;
865   int syms_in_pst;
866   B_TYPE *class_entered;
867 
868   struct partial_symbol **global_syms;	/* We'll be filling in the "global"   */
869   struct partial_symbol **static_syms;	/* and "static" tables in the objfile
870 					   as we go, so we need a pair of
871 					   current pointers. */
872 
873 #ifdef DUMPING
874   /* Turn this on for lots of debugging information in this routine.
875      You get a blow-by-blow account of quick lookup table reading */
876   static int dumping = 0;
877 #endif
878 
879   pst = (struct partial_symtab *) 0;
880 
881   /* Clear out some globals */
882   init_pst_syms ();
883   told_objfile = 0;
884 
885   /* Demangling style -- if EDG style already set, don't change it,
886      as HP style causes some problems with the KAI EDG compiler */
887   if (current_demangling_style != edg_demangling)
888     {
889       /* Otherwise, ensure that we are using HP style demangling */
890       set_demangling_style (HP_DEMANGLING_STYLE_STRING);
891     }
892 
893   /* First we need to find the starting points of the quick
894      look-up tables in the GNTT. */
895 
896   addr = gntt_bits;
897 
898   qPD = (quick_procedure_entry_ptr) addr;
899   addr += pxdb_header_p->pd_entries * sizeof (quick_procedure_entry);
900 
901 #ifdef DUMPING
902   if (dumping)
903     {
904       printf ("\n Printing routines as we see them\n");
905       for (i = 0; VALID_PROC (i); i++)
906 	{
907 	  idx = (long) qPD[i].sbProc;
908 	  printf ("%s %x..%x\n", &vt_bits[idx],
909 		  (int) PROC_START (i),
910 		  (int) PROC_END (i));
911 	}
912     }
913 #endif
914 
915   qFD = (quick_file_entry_ptr) addr;
916   addr += pxdb_header_p->fd_entries * sizeof (quick_file_entry);
917 
918 #ifdef DUMPING
919   if (dumping)
920     {
921       printf ("\n Printing files as we see them\n");
922       for (i = 0; VALID_FILE (i); i++)
923 	{
924 	  idx = (long) qFD[i].sbFile;
925 	  printf ("%s %x..%x\n", &vt_bits[idx],
926 		  (int) FILE_START (i),
927 		  (int) FILE_END (i));
928 	}
929     }
930 #endif
931 
932   qMD = (quick_module_entry_ptr) addr;
933   addr += pxdb_header_p->md_entries * sizeof (quick_module_entry);
934 
935 #ifdef DUMPING
936   if (dumping)
937     {
938       printf ("\n Printing modules as we see them\n");
939       for (i = 0; i < pxdb_header_p->md_entries; i++)
940 	{
941 	  idx = (long) qMD[i].sbMod;
942 	  printf ("%s\n", &vt_bits[idx]);
943 	}
944     }
945 #endif
946 
947   qCD = (quick_class_entry_ptr) addr;
948   addr += pxdb_header_p->cd_entries * sizeof (quick_class_entry);
949 
950 #ifdef DUMPING
951   if (dumping)
952     {
953       printf ("\n Printing classes as we see them\n");
954       for (i = 0; VALID_CLASS (i); i++)
955 	{
956 	  idx = (long) qCD[i].sbClass;
957 	  printf ("%s\n", &vt_bits[idx]);
958 	}
959 
960       printf ("\n Done with dump, on to build!\n");
961     }
962 #endif
963 
964   /* We need this index only while hp-symtab-read.c expects
965      a byte offset to the end of the LNTT entries for a given
966      psymtab.  Thus the need for it should go away someday.
967 
968      When it goes away, then we won't have any need to load the
969      LNTT from the objfile at psymtab-time, and start-up will be
970      faster.  To make that work, we'll need some way to create
971      a null pst for the "globals" pseudo-module. */
972   max_LNTT_sym_index = LNTT_SYMCOUNT (objfile);
973 
974   /* Scan the module descriptors and make a psymtab for each.
975 
976      We know the MDs, FDs and the PDs are in order by starting
977      address.  We use that fact to traverse all three arrays in
978      parallel, knowing when the next PD is in a new file
979      and we need to create a new psymtab. */
980   curr_pd = 0;			/* Current procedure entry */
981   curr_fd = 0;			/* Current file entry */
982   curr_md = 0;			/* Current module entry */
983 
984   start_adr = 0;		/* Current psymtab code range */
985   end_adr = 0;
986 
987   start_sym = 0;		/* Current psymtab symbol range */
988   end_sym = 0;
989 
990   syms_in_pst = 0;		/* Symbol count for psymtab */
991 
992   /* Psts actually just have pointers into the objfile's
993      symbol table, not their own symbol tables. */
994   global_syms = objfile->global_psymbols.list;
995   static_syms = objfile->static_psymbols.list;
996 
997 
998   /* First skip over pseudo-entries with address 0.  These represent inlined
999      routines and abstract (uninstantiated) template routines.
1000      FIXME: These should be read in and available -- even if we can't set
1001      breakpoints, etc., there's some information that can be presented
1002      to the user. pai/1997-10-08  */
1003 
1004   while (VALID_CURR_PROC && (CURR_PROC_START == 0))
1005     curr_pd++;
1006 
1007   /* Loop over files, modules, and procedures in code address order. Each
1008      time we enter an iteration of this loop, curr_pd points to the first
1009      unprocessed procedure, curr_fd points to the first unprocessed file, and
1010      curr_md to the first unprocessed module.  Each iteration of this loop
1011      updates these as required -- any or all of them may be bumpd up
1012      each time around.  When we exit this loop, we are done with all files
1013      and modules in the tables -- there may still be some procedures, however.
1014 
1015      Note: This code used to loop only over module entries, under the assumption
1016      that files can occur via inclusions and are thus unreliable, while a
1017      compiled object always corresponds to a module.  With CTTI in the HP aCC
1018      compiler, it turns out that compiled objects may have only files and no
1019      modules; so we have to loop over files and modules, creating psymtabs for
1020      either as appropriate.  Unfortunately there are some problems (notably:
1021      1. the lack of "SRC_FILE_END" entries in the LNTT, 2. the lack of pointers
1022      to the ending symbol indices of a module or a file) which make it quite hard
1023      to do this correctly.  Currently it uses a bunch of heuristics to start and
1024      end psymtabs; they seem to work well with most objects generated by aCC, but
1025      who knows when that will change...   */
1026 
1027   while (VALID_CURR_FILE || VALID_CURR_MODULE)
1028     {
1029 
1030       char *mod_name_string = NULL;
1031       char *full_name_string;
1032 
1033       /* First check for modules like "version.c", which have no code
1034          in them but still have qMD entries.  They also have no qFD or
1035          qPD entries.  Their start address is -1 and their end address
1036          is 0.  */
1037       if (VALID_CURR_MODULE && (CURR_MODULE_START == -1) && (CURR_MODULE_END == 0))
1038 	{
1039 
1040 	  mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod];
1041 
1042 #ifdef DUMPING
1043 	  if (dumping)
1044 	    printf ("Module with data only %s\n", mod_name_string);
1045 #endif
1046 
1047 	  /* We'll skip the rest (it makes error-checking easier), and
1048 	     just make an empty pst.  Right now empty psts are not put
1049 	     in the pst chain, so all this is for naught, but later it
1050 	     might help.  */
1051 
1052 	  pst = hpread_start_psymtab (objfile,
1053 				      mod_name_string,
1054 				      CURR_MODULE_START,	/* Low text address: bogus! */
1055 		       (CURR_MODULE_ISYM * sizeof (struct dntt_type_block)),
1056 	  /* ldsymoff */
1057 				      global_syms,
1058 				      static_syms);
1059 
1060 	  pst = hpread_end_psymtab (pst,
1061 				    NULL,	/* psymtab_include_list */
1062 				    0,	/* includes_used        */
1063 				  end_sym * sizeof (struct dntt_type_block),
1064 	  /* byte index in LNTT of end
1065 	     = capping symbol offset
1066 	     = LDSYMOFF of nextfile */
1067 				    0,	/* text high            */
1068 				    NULL,	/* dependency_list      */
1069 				    0);		/* dependencies_used    */
1070 
1071 	  global_syms = objfile->global_psymbols.next;
1072 	  static_syms = objfile->static_psymbols.next;
1073 
1074 	  curr_md++;
1075 	}
1076       else if (VALID_CURR_MODULE &&
1077 	       ((CURR_MODULE_START == 0) || (CURR_MODULE_START == -1) ||
1078 		(CURR_MODULE_END == 0) || (CURR_MODULE_END == -1)))
1079 	{
1080 	  TELL_OBJFILE;
1081 	  warning ("Module \"%s\" [0x%s] has non-standard addresses.  It starts at 0x%s, ends at 0x%s, and will be skipped.",
1082 		   mod_name_string, paddr_nz (curr_md), paddr_nz (start_adr), paddr_nz (end_adr));
1083 	  /* On to next module */
1084 	  curr_md++;
1085 	}
1086       else
1087 	{
1088 	  /* First check if we are looking at a file with code in it
1089 	     that does not overlap the current module's code range */
1090 
1091 	  if (VALID_CURR_FILE ? (VALID_CURR_MODULE ? (CURR_FILE_END < CURR_MODULE_START) : 1) : 0)
1092 	    {
1093 
1094 	      /* Looking at file not corresponding to any module,
1095 	         create a psymtab for it */
1096 	      full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile];
1097 	      start_adr = CURR_FILE_START;
1098 	      end_adr = CURR_FILE_END;
1099 	      start_sym = CURR_FILE_ISYM;
1100 
1101 	      /* Check if there are any procedures not handled until now, that
1102 	         begin before the start address of this file, and if so, adjust
1103 	         this module's start address to include them.  This handles routines that
1104 	         are in between file or module ranges for some reason (probably
1105 	         indicates a compiler bug */
1106 
1107 	      if (CURR_PROC_START < start_adr)
1108 		{
1109 		  TELL_OBJFILE;
1110 		  warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.",
1111 			   &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd);
1112 		  start_adr = CURR_PROC_START;
1113 		  if (CURR_PROC_ISYM < start_sym)
1114 		    start_sym = CURR_PROC_ISYM;
1115 		}
1116 
1117 	      /* Sometimes (compiler bug -- COBOL) the module end address is higher
1118 	         than the start address of the next module, so check for that and
1119 	         adjust accordingly */
1120 
1121 	      if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr))
1122 		{
1123 		  TELL_OBJFILE;
1124 		  warning ("File \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.",
1125 			   full_name_string, curr_fd);
1126 		  end_adr = FILE_START (curr_fd + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
1127 		}
1128 	      if (VALID_MODULE (curr_md) && (CURR_MODULE_START <= end_adr))
1129 		{
1130 		  TELL_OBJFILE;
1131 		  warning ("File \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.",
1132 			   full_name_string, curr_fd);
1133 		  end_adr = CURR_MODULE_START - 1;	/* Is -4 (or -8 for 64-bit) better? */
1134 		}
1135 
1136 
1137 #ifdef DUMPING
1138 	      if (dumping)
1139 		{
1140 		  printf ("Make new psymtab for file %s (%x to %x).\n",
1141 			  full_name_string, start_adr, end_adr);
1142 		}
1143 #endif
1144 	      /* Create the basic psymtab, connecting it in the list
1145 	         for this objfile and pointing its symbol entries
1146 	         to the current end of the symbol areas in the objfile.
1147 
1148 	         The "ldsymoff" parameter is the byte offset in the LNTT
1149 	         of the first symbol in this file.  Some day we should
1150 	         turn this into an index (fix in hp-symtab-read.c as well).
1151 	         And it's not even the right byte offset, as we're using
1152 	         the size of a union! FIXME!  */
1153 	      pst = hpread_start_psymtab (objfile,
1154 					  full_name_string,
1155 					  start_adr,	/* Low text address */
1156 			      (start_sym * sizeof (struct dntt_type_block)),
1157 	      /* ldsymoff */
1158 					  global_syms,
1159 					  static_syms);
1160 
1161 	      /* Set up to only enter each class referenced in this module once.  */
1162 	      class_entered = xmalloc (B_BYTES (pxdb_header_p->cd_entries));
1163 	      B_CLRALL (class_entered, pxdb_header_p->cd_entries);
1164 
1165 	      /* Scan the procedure descriptors for procedures in the current
1166 	         file, based on the starting addresses. */
1167 
1168 	      syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
1169 					start_adr, end_adr, pst, vt_bits, objfile);
1170 
1171 	      /* Get ending symbol offset */
1172 
1173 	      end_sym = 0;
1174 	      /* First check for starting index before previous psymtab */
1175 	      if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end)
1176 		{
1177 		  end_sym = find_next_pst_start (start_sym);
1178 		}
1179 	      /* Look for next start index of a file or module, or procedure */
1180 	      if (!end_sym)
1181 		{
1182 		  int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p);
1183 		  int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md, pxdb_header_p);
1184 		  int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p);
1185 
1186 		  if (next_file_isym && next_module_isym)
1187 		    {
1188 		      /* pick lower of next file or module start index */
1189 		      end_sym = min (next_file_isym, next_module_isym);
1190 		    }
1191 		  else
1192 		    {
1193 		      /* one of them is zero, pick the other */
1194 		      end_sym = max (next_file_isym, next_module_isym);
1195 		    }
1196 
1197 		  /* As a precaution, check next procedure index too */
1198 		  if (!end_sym)
1199 		    end_sym = next_proc_isym;
1200 		  else
1201 		    end_sym = min (end_sym, next_proc_isym);
1202 		}
1203 
1204 	      /* Couldn't find procedure, file, or module, use globals as default */
1205 	      if (!end_sym)
1206 		end_sym = pxdb_header_p->globals;
1207 
1208 #ifdef DUMPING
1209 	      if (dumping)
1210 		{
1211 		  printf ("File psymtab indices: %x to %x\n", start_sym, end_sym);
1212 		}
1213 #endif
1214 
1215 	      pst = hpread_end_psymtab (pst,
1216 					NULL,	/* psymtab_include_list */
1217 					0,	/* includes_used        */
1218 				  end_sym * sizeof (struct dntt_type_block),
1219 	      /* byte index in LNTT of end
1220 	         = capping symbol offset
1221 	         = LDSYMOFF of nextfile */
1222 					end_adr,	/* text high */
1223 					NULL,	/* dependency_list */
1224 					0);	/* dependencies_used */
1225 
1226 	      record_pst_syms (start_sym, end_sym);
1227 
1228 	      if (NULL == pst)
1229 		warning ("No symbols in psymtab for file \"%s\" [0x%x].", full_name_string, curr_fd);
1230 
1231 #ifdef DUMPING
1232 	      if (dumping)
1233 		{
1234 		  printf ("Made new psymtab for file %s (%x to %x), sym %x to %x.\n",
1235 			  full_name_string, start_adr, end_adr, CURR_FILE_ISYM, end_sym);
1236 		}
1237 #endif
1238 	      /* Prepare for the next psymtab. */
1239 	      global_syms = objfile->global_psymbols.next;
1240 	      static_syms = objfile->static_psymbols.next;
1241 	      xfree (class_entered);
1242 
1243 	      curr_fd++;
1244 	    }			/* Psymtab for file */
1245 	  else
1246 	    {
1247 	      /* We have a module for which we create a psymtab */
1248 
1249 	      mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod];
1250 
1251 	      /* We will include the code ranges of any files that happen to
1252 	         overlap with this module */
1253 
1254 	      /* So, first pick the lower of the file's and module's start addresses */
1255 	      start_adr = CURR_MODULE_START;
1256 	      if (VALID_CURR_FILE)
1257 		{
1258 		  if (CURR_FILE_START < CURR_MODULE_START)
1259 		    {
1260 		      TELL_OBJFILE;
1261 		      warning ("File \"%s\" [0x%x] crosses beginning of module \"%s\".",
1262 			       &vt_bits[(long) qFD[curr_fd].sbFile],
1263 			       curr_fd, mod_name_string);
1264 
1265 		      start_adr = CURR_FILE_START;
1266 		    }
1267 		}
1268 
1269 	      /* Also pick the lower of the file's and the module's start symbol indices */
1270 	      start_sym = CURR_MODULE_ISYM;
1271 	      if (VALID_CURR_FILE && (CURR_FILE_ISYM < CURR_MODULE_ISYM))
1272 		start_sym = CURR_FILE_ISYM;
1273 
1274 	      /* For the end address, we scan through the files till we find one
1275 	         that overlaps the current module but ends beyond it; if no such file exists we
1276 	         simply use the module's start address.
1277 	         (Note, if file entries themselves overlap
1278 	         we take the longest overlapping extension beyond the end of the module...)
1279 	         We assume that modules never overlap. */
1280 
1281 	      end_adr = CURR_MODULE_END;
1282 
1283 	      if (VALID_CURR_FILE)
1284 		{
1285 		  while (VALID_CURR_FILE && (CURR_FILE_START < end_adr))
1286 		    {
1287 
1288 #ifdef DUMPING
1289 		      if (dumping)
1290 			printf ("Maybe skipping file %s which overlaps with module %s\n",
1291 				&vt_bits[(long) qFD[curr_fd].sbFile], mod_name_string);
1292 #endif
1293 		      if (CURR_FILE_END > end_adr)
1294 			{
1295 			  TELL_OBJFILE;
1296 			  warning ("File \"%s\" [0x%x] crosses end of module \"%s\".",
1297 				   &vt_bits[(long) qFD[curr_fd].sbFile],
1298 				   curr_fd, mod_name_string);
1299 			  end_adr = CURR_FILE_END;
1300 			}
1301 		      curr_fd++;
1302 		    }
1303 		  curr_fd--;	/* back up after going too far */
1304 		}
1305 
1306 	      /* Sometimes (compiler bug -- COBOL) the module end address is higher
1307 	         than the start address of the next module, so check for that and
1308 	         adjust accordingly */
1309 
1310 	      if (VALID_MODULE (curr_md + 1) && (MODULE_START (curr_md + 1) <= end_adr))
1311 		{
1312 		  TELL_OBJFILE;
1313 		  warning ("Module \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.",
1314 			   mod_name_string, curr_md);
1315 		  end_adr = MODULE_START (curr_md + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
1316 		}
1317 	      if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr))
1318 		{
1319 		  TELL_OBJFILE;
1320 		  warning ("Module \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.",
1321 			   mod_name_string, curr_md);
1322 		  end_adr = FILE_START (curr_fd + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
1323 		}
1324 
1325 	      /* Use one file to get the full name for the module.  This
1326 	         situation can arise if there is executable code in a #include
1327 	         file.  Each file with code in it gets a qFD.  Files which don't
1328 	         contribute code don't get a qFD, even if they include files
1329 	         which do, e.g.:
1330 
1331 	         body.c:                    rtn.h:
1332 	         int x;                     int main() {
1333 	         #include "rtn.h"               return x;
1334 	         }
1335 
1336 	         There will a qFD for "rtn.h",and a qMD for "body.c",
1337 	         but no qMD for "rtn.h" or qFD for "body.c"!
1338 
1339 	         We pick the name of the last file to overlap with this
1340 	         module.  C convention is to put include files first.  In a
1341 	         perfect world, we could check names and use the file whose full
1342 	         path name ends with the module name. */
1343 
1344 	      if (VALID_CURR_FILE)
1345 		full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile];
1346 	      else
1347 		full_name_string = mod_name_string;
1348 
1349 	      /* Check if there are any procedures not handled until now, that
1350 	         begin before the start address we have now, and if so, adjust
1351 	         this psymtab's start address to include them.  This handles routines that
1352 	         are in between file or module ranges for some reason (probably
1353 	         indicates a compiler bug */
1354 
1355 	      if (CURR_PROC_START < start_adr)
1356 		{
1357 		  TELL_OBJFILE;
1358 		  warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.",
1359 			   &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd);
1360 		  start_adr = CURR_PROC_START;
1361 		  if (CURR_PROC_ISYM < start_sym)
1362 		    start_sym = CURR_PROC_ISYM;
1363 		}
1364 
1365 #ifdef DUMPING
1366 	      if (dumping)
1367 		{
1368 		  printf ("Make new psymtab for module %s (%x to %x), using file %s\n",
1369 		     mod_name_string, start_adr, end_adr, full_name_string);
1370 		}
1371 #endif
1372 	      /* Create the basic psymtab, connecting it in the list
1373 	         for this objfile and pointing its symbol entries
1374 	         to the current end of the symbol areas in the objfile.
1375 
1376 	         The "ldsymoff" parameter is the byte offset in the LNTT
1377 	         of the first symbol in this file.  Some day we should
1378 	         turn this into an index (fix in hp-symtab-read.c as well).
1379 	         And it's not even the right byte offset, as we're using
1380 	         the size of a union! FIXME!  */
1381 	      pst = hpread_start_psymtab (objfile,
1382 					  full_name_string,
1383 					  start_adr,	/* Low text address */
1384 			      (start_sym * sizeof (struct dntt_type_block)),
1385 	      /* ldsymoff */
1386 					  global_syms,
1387 					  static_syms);
1388 
1389 	      /* Set up to only enter each class referenced in this module once.  */
1390 	      class_entered = xmalloc (B_BYTES (pxdb_header_p->cd_entries));
1391 	      B_CLRALL (class_entered, pxdb_header_p->cd_entries);
1392 
1393 	      /* Scan the procedure descriptors for procedures in the current
1394 	         module, based on the starting addresses. */
1395 
1396 	      syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
1397 					start_adr, end_adr, pst, vt_bits, objfile);
1398 
1399 	      /* Get ending symbol offset */
1400 
1401 	      end_sym = 0;
1402 	      /* First check for starting index before previous psymtab */
1403 	      if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end)
1404 		{
1405 		  end_sym = find_next_pst_start (start_sym);
1406 		}
1407 	      /* Look for next start index of a file or module, or procedure */
1408 	      if (!end_sym)
1409 		{
1410 		  int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p);
1411 		  int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md + 1, pxdb_header_p);
1412 		  int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p);
1413 
1414 		  if (next_file_isym && next_module_isym)
1415 		    {
1416 		      /* pick lower of next file or module start index */
1417 		      end_sym = min (next_file_isym, next_module_isym);
1418 		    }
1419 		  else
1420 		    {
1421 		      /* one of them is zero, pick the other */
1422 		      end_sym = max (next_file_isym, next_module_isym);
1423 		    }
1424 
1425 		  /* As a precaution, check next procedure index too */
1426 		  if (!end_sym)
1427 		    end_sym = next_proc_isym;
1428 		  else
1429 		    end_sym = min (end_sym, next_proc_isym);
1430 		}
1431 
1432 	      /* Couldn't find procedure, file, or module, use globals as default */
1433 	      if (!end_sym)
1434 		end_sym = pxdb_header_p->globals;
1435 
1436 #ifdef DUMPING
1437 	      if (dumping)
1438 		{
1439 		  printf ("Module psymtab indices: %x to %x\n", start_sym, end_sym);
1440 		}
1441 #endif
1442 
1443 	      pst = hpread_end_psymtab (pst,
1444 					NULL,	/* psymtab_include_list */
1445 					0,	/* includes_used        */
1446 				  end_sym * sizeof (struct dntt_type_block),
1447 	      /* byte index in LNTT of end
1448 	         = capping symbol offset
1449 	         = LDSYMOFF of nextfile */
1450 					end_adr,	/* text high */
1451 					NULL,	/* dependency_list      */
1452 					0);	/* dependencies_used    */
1453 
1454 	      record_pst_syms (start_sym, end_sym);
1455 
1456 	      if (NULL == pst)
1457 		warning ("No symbols in psymtab for module \"%s\" [0x%x].", mod_name_string, curr_md);
1458 
1459 #ifdef DUMPING
1460 	      if (dumping)
1461 		{
1462 		  printf ("Made new psymtab for module %s (%x to %x), sym %x to %x.\n",
1463 			  mod_name_string, start_adr, end_adr, CURR_MODULE_ISYM, end_sym);
1464 		}
1465 #endif
1466 
1467 	      /* Prepare for the next psymtab. */
1468 	      global_syms = objfile->global_psymbols.next;
1469 	      static_syms = objfile->static_psymbols.next;
1470 	      xfree (class_entered);
1471 
1472 	      curr_md++;
1473 	      curr_fd++;
1474 	    }			/* psymtab for module */
1475 	}			/* psymtab for non-bogus file or module */
1476     }				/* End of while loop over all files & modules */
1477 
1478   /* There may be some routines after all files and modules -- these will get
1479      inserted in a separate new module of their own */
1480   if (VALID_CURR_PROC)
1481     {
1482       start_adr = CURR_PROC_START;
1483       end_adr = qPD[pxdb_header_p->pd_entries - 1].adrEnd;
1484       TELL_OBJFILE;
1485       warning ("Found functions beyond end of all files and modules [0x%x].", curr_pd);
1486 #ifdef DUMPING
1487       if (dumping)
1488 	{
1489 	  printf ("Orphan functions at end, PD %d and beyond (%x to %x)\n",
1490 		  curr_pd, start_adr, end_adr);
1491 	}
1492 #endif
1493       pst = hpread_start_psymtab (objfile,
1494 				  "orphans",
1495 				  start_adr,	/* Low text address */
1496 			 (CURR_PROC_ISYM * sizeof (struct dntt_type_block)),
1497       /* ldsymoff */
1498 				  global_syms,
1499 				  static_syms);
1500 
1501       scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
1502 		  start_adr, end_adr, pst, vt_bits, objfile);
1503 
1504       pst = hpread_end_psymtab (pst,
1505 				NULL,	/* psymtab_include_list */
1506 				0,	/* includes_used */
1507 		   pxdb_header_p->globals * sizeof (struct dntt_type_block),
1508       /* byte index in LNTT of end
1509          = capping symbol offset
1510          = LDSYMOFF of nextfile */
1511 				end_adr,	/* text high  */
1512 				NULL,	/* dependency_list */
1513 				0);	/* dependencies_used */
1514     }
1515 
1516 
1517 #ifdef NEVER_NEVER
1518   /* Now build psts for non-module things (in the tail of
1519      the LNTT, after the last END MODULE entry).
1520 
1521      If null psts were kept on the chain, this would be
1522      a solution.  FIXME */
1523   pst = hpread_start_psymtab (objfile,
1524 			      "globals",
1525 			      0,
1526 			      (pxdb_header_p->globals
1527 			       * sizeof (struct dntt_type_block)),
1528 			      objfile->global_psymbols.next,
1529 			      objfile->static_psymbols.next);
1530   hpread_end_psymtab (pst,
1531 		      NULL, 0,
1532 		      (max_LNTT_sym_index * sizeof (struct dntt_type_block)),
1533 		      0,
1534 		      NULL, 0);
1535 #endif
1536 
1537   clear_pst_syms ();
1538 
1539   return 1;
1540 
1541 }				/* End of hpread_quick_traverse. */
1542 
1543 
1544 /* Get appropriate header, based on pxdb type.
1545    Return value: 1 if ok, 0 if not */
1546 static int
hpread_get_header(struct objfile * objfile,PXDB_header_ptr pxdb_header_p)1547 hpread_get_header (struct objfile *objfile, PXDB_header_ptr pxdb_header_p)
1548 {
1549   asection *pinfo_section, *debug_section, *header_section;
1550 
1551 #ifdef DUMPING
1552   /* Turn on for debugging information */
1553   static int dumping = 0;
1554 #endif
1555 
1556   header_section = bfd_get_section_by_name (objfile->obfd, "$HEADER$");
1557   if (!header_section)
1558     {
1559       /* We don't have either PINFO or DEBUG sections.  But
1560          stuff like "libc.sl" has no debug info.  There's no
1561          need to warn the user of this, as it may be ok. The
1562          caller will figure it out and issue any needed
1563          messages. */
1564 #ifdef DUMPING
1565       if (dumping)
1566 	printf ("==No debug info at all for %s.\n", objfile->name);
1567 #endif
1568 
1569       return 0;
1570     }
1571 
1572   /* We would like either a $DEBUG$ or $PINFO$ section.
1573      Once we know which, we can understand the header
1574      data (which we have defined to suit the more common
1575      $DEBUG$ case). */
1576   debug_section = bfd_get_section_by_name (objfile->obfd, "$DEBUG$");
1577   pinfo_section = bfd_get_section_by_name (objfile->obfd, "$PINFO$");
1578   if (debug_section)
1579     {
1580       /* The expected case: normal pxdb header. */
1581       bfd_get_section_contents (objfile->obfd, header_section,
1582 				pxdb_header_p, 0, sizeof (PXDB_header));
1583 
1584       if (!pxdb_header_p->pxdbed)
1585 	{
1586 	  /* This shouldn't happen if we check in "symfile.c". */
1587 	  return 0;
1588 	}			/* DEBUG section */
1589     }
1590 
1591   else if (pinfo_section)
1592     {
1593       /* The DOC case; we need to translate this into a
1594          regular header. */
1595       DOC_info_PXDB_header doc_header;
1596 
1597 #ifdef DUMPING
1598       if (dumping)
1599 	{
1600 	  printf ("==OOps, PINFO, let's try to handle this, %s.\n", objfile->name);
1601 	}
1602 #endif
1603 
1604       bfd_get_section_contents (objfile->obfd,
1605 				header_section,
1606 				&doc_header, 0,
1607 				sizeof (DOC_info_PXDB_header));
1608 
1609       if (!doc_header.pxdbed)
1610 	{
1611 	  /* This shouldn't happen if we check in "symfile.c". */
1612 	  warning ("File \"%s\" not processed by pxdb!", objfile->name);
1613 	  return 0;
1614 	}
1615 
1616       /* Copy relevent fields to standard header passed in. */
1617       pxdb_header_p->pd_entries = doc_header.pd_entries;
1618       pxdb_header_p->fd_entries = doc_header.fd_entries;
1619       pxdb_header_p->md_entries = doc_header.md_entries;
1620       pxdb_header_p->pxdbed = doc_header.pxdbed;
1621       pxdb_header_p->bighdr = doc_header.bighdr;
1622       pxdb_header_p->sa_header = doc_header.sa_header;
1623       pxdb_header_p->inlined = doc_header.inlined;
1624       pxdb_header_p->globals = doc_header.globals;
1625       pxdb_header_p->time = doc_header.time;
1626       pxdb_header_p->pg_entries = doc_header.pg_entries;
1627       pxdb_header_p->functions = doc_header.functions;
1628       pxdb_header_p->files = doc_header.files;
1629       pxdb_header_p->cd_entries = doc_header.cd_entries;
1630       pxdb_header_p->aa_entries = doc_header.aa_entries;
1631       pxdb_header_p->oi_entries = doc_header.oi_entries;
1632       pxdb_header_p->version = doc_header.version;
1633     }				/* PINFO section */
1634 
1635   else
1636     {
1637 #ifdef DUMPING
1638       if (dumping)
1639 	printf ("==No debug info at all for %s.\n", objfile->name);
1640 #endif
1641 
1642       return 0;
1643 
1644     }
1645 
1646   return 1;
1647 }				/* End of hpread_get_header */
1648 #endif /* QUICK_LOOK_UP */
1649 
1650 
1651 /* Initialization for reading native HP C debug symbols from OBJFILE.
1652 
1653    Its only purpose in life is to set up the symbol reader's private
1654    per-objfile data structures, and read in the raw contents of the debug
1655    sections (attaching pointers to the debug info into the private data
1656    structures).
1657 
1658    Since BFD doesn't know how to read debug symbols in a format-independent
1659    way (and may never do so...), we have to do it ourselves.  Note we may
1660    be called on a file without native HP C debugging symbols.
1661 
1662    FIXME, there should be a cleaner peephole into the BFD environment
1663    here. */
1664 void
hpread_symfile_init(struct objfile * objfile)1665 hpread_symfile_init (struct objfile *objfile)
1666 {
1667   asection *vt_section, *slt_section, *lntt_section, *gntt_section;
1668 
1669   /* Allocate struct to keep track of the symfile */
1670   objfile->sym_private =
1671     xmmalloc (objfile->md, sizeof (struct hpread_symfile_info));
1672   memset (objfile->sym_private, 0, sizeof (struct hpread_symfile_info));
1673 
1674   /* We haven't read in any types yet.  */
1675   DNTT_TYPE_VECTOR (objfile) = 0;
1676 
1677   /* Read in data from the $GNTT$ subspace.  */
1678   gntt_section = bfd_get_section_by_name (objfile->obfd, "$GNTT$");
1679   if (!gntt_section)
1680     return;
1681 
1682   GNTT (objfile)
1683     = obstack_alloc (&objfile->objfile_obstack,
1684 		     bfd_section_size (objfile->obfd, gntt_section));
1685 
1686   bfd_get_section_contents (objfile->obfd, gntt_section, GNTT (objfile),
1687 			 0, bfd_section_size (objfile->obfd, gntt_section));
1688 
1689   GNTT_SYMCOUNT (objfile)
1690     = bfd_section_size (objfile->obfd, gntt_section)
1691     / sizeof (struct dntt_type_block);
1692 
1693   /* Read in data from the $LNTT$ subspace.   Also keep track of the number
1694      of LNTT symbols.
1695 
1696      FIXME: this could be moved into the psymtab-to-symtab expansion
1697      code, and save startup time.  At the moment this data is
1698      still used, though.  We'd need a way to tell hp-symtab-read.c
1699      whether or not to load the LNTT. */
1700   lntt_section = bfd_get_section_by_name (objfile->obfd, "$LNTT$");
1701   if (!lntt_section)
1702     return;
1703 
1704   LNTT (objfile)
1705     = obstack_alloc (&objfile->objfile_obstack,
1706 		     bfd_section_size (objfile->obfd, lntt_section));
1707 
1708   bfd_get_section_contents (objfile->obfd, lntt_section, LNTT (objfile),
1709 			 0, bfd_section_size (objfile->obfd, lntt_section));
1710 
1711   LNTT_SYMCOUNT (objfile)
1712     = bfd_section_size (objfile->obfd, lntt_section)
1713     / sizeof (struct dntt_type_block);
1714 
1715   /* Read in data from the $SLT$ subspace.  $SLT$ contains information
1716      on source line numbers.  */
1717   slt_section = bfd_get_section_by_name (objfile->obfd, "$SLT$");
1718   if (!slt_section)
1719     return;
1720 
1721   SLT (objfile) =
1722     obstack_alloc (&objfile->objfile_obstack,
1723 		   bfd_section_size (objfile->obfd, slt_section));
1724 
1725   bfd_get_section_contents (objfile->obfd, slt_section, SLT (objfile),
1726 			  0, bfd_section_size (objfile->obfd, slt_section));
1727 
1728   /* Read in data from the $VT$ subspace.  $VT$ contains things like
1729      names and constants.  Keep track of the number of symbols in the VT.  */
1730   vt_section = bfd_get_section_by_name (objfile->obfd, "$VT$");
1731   if (!vt_section)
1732     return;
1733 
1734   VT_SIZE (objfile) = bfd_section_size (objfile->obfd, vt_section);
1735 
1736   VT (objfile) =
1737     (char *) obstack_alloc (&objfile->objfile_obstack,
1738 			    VT_SIZE (objfile));
1739 
1740   bfd_get_section_contents (objfile->obfd, vt_section, VT (objfile),
1741 			    0, VT_SIZE (objfile));
1742 }
1743 
1744 /* Scan and build partial symbols for a symbol file.
1745 
1746    The minimal symbol table (either SOM or HP a.out) has already been
1747    read in; all we need to do is setup partial symbols based on the
1748    native debugging information.
1749 
1750    Note that the minimal table is produced by the linker, and has
1751    only global routines in it; the psymtab is based on compiler-
1752    generated debug information and has non-global
1753    routines in it as well as files and class information.
1754 
1755    We assume hpread_symfile_init has been called to initialize the
1756    symbol reader's private data structures.
1757 
1758    MAINLINE is true if we are reading the main symbol table (as
1759    opposed to a shared lib or dynamically loaded file). */
1760 
1761 void
hpread_build_psymtabs(struct objfile * objfile,int mainline)1762 hpread_build_psymtabs (struct objfile *objfile, int mainline)
1763 {
1764 
1765 #ifdef DUMPING
1766   /* Turn this on to get debugging output. */
1767   static int dumping = 0;
1768 #endif
1769 
1770   char *namestring;
1771   int past_first_source_file = 0;
1772   struct cleanup *old_chain;
1773 
1774   int hp_symnum, symcount, i;
1775   int scan_start = 0;
1776 
1777   union dnttentry *dn_bufp;
1778   unsigned long valu;
1779   char *p;
1780   int texthigh = 0;
1781   int have_name = 0;
1782 
1783   /* Current partial symtab */
1784   struct partial_symtab *pst;
1785 
1786   /* List of current psymtab's include files */
1787   char **psymtab_include_list;
1788   int includes_allocated;
1789   int includes_used;
1790 
1791   /* Index within current psymtab dependency list */
1792   struct partial_symtab **dependency_list;
1793   int dependencies_used, dependencies_allocated;
1794 
1795   /* Just in case the stabs reader left turds lying around.  */
1796   free_pending_blocks ();
1797   make_cleanup (really_free_pendings, 0);
1798 
1799   pst = (struct partial_symtab *) 0;
1800 
1801   /* We shouldn't use alloca, instead use malloc/free.  Doing so avoids
1802      a number of problems with cross compilation and creating useless holes
1803      in the stack when we have to allocate new entries.  FIXME.  */
1804 
1805   includes_allocated = 30;
1806   includes_used = 0;
1807   psymtab_include_list = (char **) alloca (includes_allocated *
1808 					   sizeof (char *));
1809 
1810   dependencies_allocated = 30;
1811   dependencies_used = 0;
1812   dependency_list =
1813     (struct partial_symtab **) alloca (dependencies_allocated *
1814 				       sizeof (struct partial_symtab *));
1815 
1816   old_chain = make_cleanup_free_objfile (objfile);
1817 
1818   last_source_file = 0;
1819 
1820 #ifdef QUICK_LOOK_UP
1821   {
1822     /* Begin code for new-style loading of quick look-up tables. */
1823 
1824     /* elz: this checks whether the file has beeen processed by pxdb.
1825        If not we would like to try to read the psymbols in
1826        anyway, but it turns out to be not so easy. So this could
1827        actually be commented out, but I leave it in, just in case
1828        we decide to add support for non-pxdb-ed stuff in the future. */
1829     PXDB_header pxdb_header;
1830     int found_modules_in_program;
1831 
1832     if (hpread_get_header (objfile, &pxdb_header))
1833       {
1834 	/* Build a minimal table.  No types, no global variables,
1835 	   no include files.... */
1836 #ifdef DUMPING
1837 	if (dumping)
1838 	  printf ("\nNew method for %s\n", objfile->name);
1839 #endif
1840 
1841 	/* elz: quick_traverse returns true if it found
1842 	   some modules in the main source file, other
1843 	   than those in end.c
1844 	   In C and C++, all the files have MODULES entries
1845 	   in the LNTT, and the quick table traverse is all
1846 	   based on finding these MODULES entries. Without
1847 	   those it cannot work.
1848 	   It happens that F77 programs don't have MODULES
1849 	   so the quick traverse gets confused. F90 programs
1850 	   have modules, and the quick method still works.
1851 	   So, if modules (other than those in end.c) are
1852 	   not found we give up on the quick table stuff,
1853 	   and fall back on the slower method  */
1854 	found_modules_in_program = hpread_quick_traverse (objfile,
1855 							  GNTT (objfile),
1856 							  VT (objfile),
1857 							  &pxdb_header);
1858 
1859 	discard_cleanups (old_chain);
1860 
1861 	/* Set up to scan the global section of the LNTT.
1862 
1863 	   This field is not always correct: if there are
1864 	   no globals, it will point to the last record in
1865 	   the regular LNTT, which is usually an END MODULE.
1866 
1867 	   Since it might happen that there could be a file
1868 	   with just one global record, there's no way to
1869 	   tell other than by looking at the record, so that's
1870 	   done below. */
1871 	if (found_modules_in_program)
1872 	  scan_start = pxdb_header.globals;
1873       }
1874 #ifdef DUMPING
1875     else
1876       {
1877 	if (dumping)
1878 	  printf ("\nGoing on to old method for %s\n", objfile->name);
1879       }
1880 #endif
1881   }
1882 #endif /* QUICK_LOOK_UP */
1883 
1884   /* Make two passes, one over the GNTT symbols, the other for the
1885      LNTT symbols.
1886 
1887      JB comment: above isn't true--they only make one pass, over
1888      the LNTT.  */
1889   for (i = 0; i < 1; i++)
1890     {
1891       int within_function = 0;
1892 
1893       if (i)
1894 	symcount = GNTT_SYMCOUNT (objfile);
1895       else
1896 	symcount = LNTT_SYMCOUNT (objfile);
1897 
1898 
1899       for (hp_symnum = scan_start; hp_symnum < symcount; hp_symnum++)
1900 	{
1901 	  QUIT;
1902 	  if (i)
1903 	    dn_bufp = hpread_get_gntt (hp_symnum, objfile);
1904 	  else
1905 	    dn_bufp = hpread_get_lntt (hp_symnum, objfile);
1906 
1907 	  if (dn_bufp->dblock.extension)
1908 	    continue;
1909 
1910 	  /* Only handle things which are necessary for minimal symbols.
1911 	     everything else is ignored.  */
1912 	  switch (dn_bufp->dblock.kind)
1913 	    {
1914 	    case DNTT_TYPE_SRCFILE:
1915 	      {
1916 #ifdef QUICK_LOOK_UP
1917 		if (scan_start == hp_symnum
1918 		    && symcount == hp_symnum + 1)
1919 		  {
1920 		    /* If there are NO globals in an executable,
1921 		       PXDB's index to the globals will point to
1922 		       the last record in the file, which
1923 		       could be this record. (this happened for F77 libraries)
1924 		       ignore it and be done! */
1925 		    continue;
1926 		  }
1927 #endif /* QUICK_LOOK_UP */
1928 
1929 		/* A source file of some kind.  Note this may simply
1930 		   be an included file.  */
1931 		set_namestring (dn_bufp, &namestring, objfile);
1932 
1933 		/* Check if this is the source file we are already working
1934 		   with.  */
1935 		if (pst && !strcmp (namestring, pst->filename))
1936 		  continue;
1937 
1938 		/* Check if this is an include file, if so check if we have
1939 		   already seen it.  Add it to the include list */
1940 		p = strrchr (namestring, '.');
1941 		if (!strcmp (p, ".h"))
1942 		  {
1943 		    int j, found;
1944 
1945 		    found = 0;
1946 		    for (j = 0; j < includes_used; j++)
1947 		      if (!strcmp (namestring, psymtab_include_list[j]))
1948 			{
1949 			  found = 1;
1950 			  break;
1951 			}
1952 		    if (found)
1953 		      continue;
1954 
1955 		    /* Add it to the list of includes seen so far and
1956 		       allocate more include space if necessary.  */
1957 		    psymtab_include_list[includes_used++] = namestring;
1958 		    if (includes_used >= includes_allocated)
1959 		      {
1960 			char **orig = psymtab_include_list;
1961 
1962 			psymtab_include_list = (char **)
1963 			  alloca ((includes_allocated *= 2) *
1964 				  sizeof (char *));
1965 			memcpy (psymtab_include_list, orig,
1966 				includes_used * sizeof (char *));
1967 		      }
1968 		    continue;
1969 		  }
1970 
1971 		if (pst)
1972 		  {
1973 		    if (!have_name)
1974 		      {
1975 			pst->filename = (char *)
1976 			  obstack_alloc (&pst->objfile->objfile_obstack,
1977 					 strlen (namestring) + 1);
1978 			strcpy (pst->filename, namestring);
1979 			have_name = 1;
1980 			continue;
1981 		      }
1982 		    continue;
1983 		  }
1984 
1985 		/* This is a bonafide new source file.
1986 		   End the current partial symtab and start a new one.  */
1987 
1988 		if (pst && past_first_source_file)
1989 		  {
1990 		    hpread_end_psymtab (pst, psymtab_include_list,
1991 					includes_used,
1992 					(hp_symnum
1993 					 * sizeof (struct dntt_type_block)),
1994 					texthigh,
1995 					dependency_list, dependencies_used);
1996 		    pst = (struct partial_symtab *) 0;
1997 		    includes_used = 0;
1998 		    dependencies_used = 0;
1999 		  }
2000 		else
2001 		  past_first_source_file = 1;
2002 
2003 		valu = hpread_get_textlow (i, hp_symnum, objfile, symcount);
2004 		valu += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2005 		pst = hpread_start_psymtab (objfile,
2006 					    namestring, valu,
2007 					    (hp_symnum
2008 					 * sizeof (struct dntt_type_block)),
2009 					    objfile->global_psymbols.next,
2010 					    objfile->static_psymbols.next);
2011 		texthigh = valu;
2012 		have_name = 1;
2013 		continue;
2014 	      }
2015 
2016 	    case DNTT_TYPE_MODULE:
2017 	      /* A source file.  It's still unclear to me what the
2018 	         real difference between a DNTT_TYPE_SRCFILE and DNTT_TYPE_MODULE
2019 	         is supposed to be.  */
2020 
2021 	      /* First end the previous psymtab */
2022 	      if (pst)
2023 		{
2024 		  hpread_end_psymtab (pst, psymtab_include_list, includes_used,
2025 				      ((hp_symnum - 1)
2026 				       * sizeof (struct dntt_type_block)),
2027 				      texthigh,
2028 				      dependency_list, dependencies_used);
2029 		  pst = (struct partial_symtab *) 0;
2030 		  includes_used = 0;
2031 		  dependencies_used = 0;
2032 		  have_name = 0;
2033 		}
2034 
2035 	      /* Now begin a new module and a new psymtab for it */
2036 	      set_namestring (dn_bufp, &namestring, objfile);
2037 	      valu = hpread_get_textlow (i, hp_symnum, objfile, symcount);
2038 	      valu += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2039 	      if (!pst)
2040 		{
2041 		  pst = hpread_start_psymtab (objfile,
2042 					      namestring, valu,
2043 					      (hp_symnum
2044 					 * sizeof (struct dntt_type_block)),
2045 					      objfile->global_psymbols.next,
2046 					      objfile->static_psymbols.next);
2047 		  texthigh = valu;
2048 		  have_name = 0;
2049 		}
2050 	      continue;
2051 
2052 	    case DNTT_TYPE_FUNCTION:
2053 	    case DNTT_TYPE_ENTRY:
2054 	      /* The beginning of a function.  DNTT_TYPE_ENTRY may also denote
2055 	         a secondary entry point.  */
2056 	      valu = dn_bufp->dfunc.hiaddr + ANOFFSET (objfile->section_offsets,
2057 						       SECT_OFF_TEXT (objfile));
2058 	      if (valu > texthigh)
2059 		texthigh = valu;
2060 	      valu = dn_bufp->dfunc.lowaddr +
2061 		ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2062 	      set_namestring (dn_bufp, &namestring, objfile);
2063 	      if (dn_bufp->dfunc.global)
2064 		add_psymbol_to_list (namestring, strlen (namestring),
2065 				     VAR_DOMAIN, LOC_BLOCK,
2066 				     &objfile->global_psymbols, valu,
2067 				     0, language_unknown, objfile);
2068 	      else
2069 		add_psymbol_to_list (namestring, strlen (namestring),
2070 				     VAR_DOMAIN, LOC_BLOCK,
2071 				     &objfile->static_psymbols, valu,
2072 				     0, language_unknown, objfile);
2073 	      within_function = 1;
2074 	      continue;
2075 
2076 	    case DNTT_TYPE_DOC_FUNCTION:
2077 	      valu = dn_bufp->ddocfunc.hiaddr + ANOFFSET (objfile->section_offsets,
2078 							  SECT_OFF_TEXT (objfile));
2079 	      if (valu > texthigh)
2080 		texthigh = valu;
2081 	      valu = dn_bufp->ddocfunc.lowaddr +
2082 		ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2083 	      set_namestring (dn_bufp, &namestring, objfile);
2084 	      if (dn_bufp->ddocfunc.global)
2085 		add_psymbol_to_list (namestring, strlen (namestring),
2086 				     VAR_DOMAIN, LOC_BLOCK,
2087 				     &objfile->global_psymbols, valu,
2088 				     0, language_unknown, objfile);
2089 	      else
2090 		add_psymbol_to_list (namestring, strlen (namestring),
2091 				     VAR_DOMAIN, LOC_BLOCK,
2092 				     &objfile->static_psymbols, valu,
2093 				     0, language_unknown, objfile);
2094 	      within_function = 1;
2095 	      continue;
2096 
2097 	    case DNTT_TYPE_BEGIN:
2098 	    case DNTT_TYPE_END:
2099 	      /* We don't check MODULE end here, because there can be
2100 	         symbols beyond the module end which properly belong to the
2101 	         current psymtab -- so we wait till the next MODULE start */
2102 
2103 
2104 #ifdef QUICK_LOOK_UP
2105 	      if (scan_start == hp_symnum
2106 		  && symcount == hp_symnum + 1)
2107 		{
2108 		  /* If there are NO globals in an executable,
2109 		     PXDB's index to the globals will point to
2110 		     the last record in the file, which is
2111 		     probably an END MODULE, i.e. this record.
2112 		     ignore it and be done! */
2113 		  continue;
2114 		}
2115 #endif /* QUICK_LOOK_UP */
2116 
2117 	      /* Scope block begin/end.  We only care about function
2118 	         and file blocks right now.  */
2119 
2120 	      if ((dn_bufp->dend.endkind == DNTT_TYPE_FUNCTION) ||
2121 		  (dn_bufp->dend.endkind == DNTT_TYPE_DOC_FUNCTION))
2122 		within_function = 0;
2123 	      continue;
2124 
2125 	    case DNTT_TYPE_SVAR:
2126 	    case DNTT_TYPE_DVAR:
2127 	    case DNTT_TYPE_TYPEDEF:
2128 	    case DNTT_TYPE_TAGDEF:
2129 	      {
2130 		/* Variables, typedefs an the like.  */
2131 		enum address_class storage;
2132 		domain_enum domain;
2133 
2134 		/* Don't add locals to the partial symbol table.  */
2135 		if (within_function
2136 		    && (dn_bufp->dblock.kind == DNTT_TYPE_SVAR
2137 			|| dn_bufp->dblock.kind == DNTT_TYPE_DVAR))
2138 		  continue;
2139 
2140 		/* TAGDEFs go into the structure domain.  */
2141 		if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF)
2142 		  domain = STRUCT_DOMAIN;
2143 		else
2144 		  domain = VAR_DOMAIN;
2145 
2146 		/* What kind of "storage" does this use?  */
2147 		if (dn_bufp->dblock.kind == DNTT_TYPE_SVAR)
2148 		  storage = LOC_STATIC;
2149 		else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR
2150 			 && dn_bufp->ddvar.regvar)
2151 		  storage = LOC_REGISTER;
2152 		else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR)
2153 		  storage = LOC_LOCAL;
2154 		else
2155 		  storage = LOC_UNDEF;
2156 
2157 		set_namestring (dn_bufp, &namestring, objfile);
2158 		if (!pst)
2159 		  {
2160 		    pst = hpread_start_psymtab (objfile,
2161 						"globals", 0,
2162 						(hp_symnum
2163 					 * sizeof (struct dntt_type_block)),
2164 					      objfile->global_psymbols.next,
2165 					     objfile->static_psymbols.next);
2166 		  }
2167 
2168 		/* Compute address of the data symbol */
2169 		valu = dn_bufp->dsvar.location;
2170 		/* Relocate in case it's in a shared library */
2171 		if (storage == LOC_STATIC)
2172 		  valu += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2173 
2174 		/* Luckily, dvar, svar, typedef, and tagdef all
2175 		   have their "global" bit in the same place, so it works
2176 		   (though it's bad programming practice) to reference
2177 		   "dsvar.global" even though we may be looking at
2178 		   any of the above four types. */
2179 		if (dn_bufp->dsvar.global)
2180 		  {
2181 		    add_psymbol_to_list (namestring, strlen (namestring),
2182 					 domain, storage,
2183 					 &objfile->global_psymbols,
2184 					 valu,
2185 					 0, language_unknown, objfile);
2186 		  }
2187 		else
2188 		  {
2189 		    add_psymbol_to_list (namestring, strlen (namestring),
2190 					 domain, storage,
2191 					 &objfile->static_psymbols,
2192 					 valu,
2193 					 0, language_unknown, objfile);
2194 		  }
2195 
2196 		/* For TAGDEF's, the above code added the tagname to the
2197 		   struct domain. This will cause tag "t" to be found
2198 		   on a reference of the form "(struct t) x". But for
2199 		   C++ classes, "t" will also be a typename, which we
2200 		   want to find on a reference of the form "ptype t".
2201 		   Therefore, we also add "t" to the var domain.
2202 		   Do the same for enum's due to the way aCC generates
2203 		   debug info for these (see more extended comment
2204 		   in hp-symtab-read.c).
2205 		   We do the same for templates, so that "ptype t"
2206 		   where "t" is a template also works. */
2207 		if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF &&
2208 		  dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile))
2209 		  {
2210 		    int global = dn_bufp->dtag.global;
2211 		    /* Look ahead to see if it's a C++ class */
2212 		    dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile);
2213 		    if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS ||
2214 			dn_bufp->dblock.kind == DNTT_TYPE_ENUM ||
2215 			dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
2216 		      {
2217 			if (global)
2218 			  {
2219 			    add_psymbol_to_list (namestring, strlen (namestring),
2220 						 VAR_DOMAIN, storage,
2221 						 &objfile->global_psymbols,
2222 						 dn_bufp->dsvar.location,
2223 					      0, language_unknown, objfile);
2224 			  }
2225 			else
2226 			  {
2227 			    add_psymbol_to_list (namestring, strlen (namestring),
2228 						 VAR_DOMAIN, storage,
2229 						 &objfile->static_psymbols,
2230 						 dn_bufp->dsvar.location,
2231 					      0, language_unknown, objfile);
2232 			  }
2233 		      }
2234 		  }
2235 	      }
2236 	      continue;
2237 
2238 	    case DNTT_TYPE_MEMENUM:
2239 	    case DNTT_TYPE_CONST:
2240 	      /* Constants and members of enumerated types.  */
2241 	      set_namestring (dn_bufp, &namestring, objfile);
2242 	      if (!pst)
2243 		{
2244 		  pst = hpread_start_psymtab (objfile,
2245 					      "globals", 0,
2246 					      (hp_symnum
2247 					 * sizeof (struct dntt_type_block)),
2248 					      objfile->global_psymbols.next,
2249 					      objfile->static_psymbols.next);
2250 		}
2251 	      if (dn_bufp->dconst.global)
2252 		add_psymbol_to_list (namestring, strlen (namestring),
2253 				     VAR_DOMAIN, LOC_CONST,
2254 				     &objfile->global_psymbols, 0,
2255 				     0, language_unknown, objfile);
2256 	      else
2257 		add_psymbol_to_list (namestring, strlen (namestring),
2258 				     VAR_DOMAIN, LOC_CONST,
2259 				     &objfile->static_psymbols, 0,
2260 				     0, language_unknown, objfile);
2261 	      continue;
2262 	    default:
2263 	      continue;
2264 	    }
2265 	}
2266     }
2267 
2268   /* End any pending partial symbol table. */
2269   if (pst)
2270     {
2271       hpread_end_psymtab (pst, psymtab_include_list, includes_used,
2272 			  hp_symnum * sizeof (struct dntt_type_block),
2273 			  0, dependency_list, dependencies_used);
2274     }
2275 
2276   discard_cleanups (old_chain);
2277 }
2278 
2279 /* Perform any local cleanups required when we are done with a particular
2280    objfile.  I.E, we are in the process of discarding all symbol information
2281    for an objfile, freeing up all memory held for it, and unlinking the
2282    objfile struct from the global list of known objfiles. */
2283 
2284 void
hpread_symfile_finish(struct objfile * objfile)2285 hpread_symfile_finish (struct objfile *objfile)
2286 {
2287   if (objfile->sym_private != NULL)
2288     {
2289       xmfree (objfile->md, objfile->sym_private);
2290     }
2291 }
2292 
2293 
2294 /* The remaining functions are all for internal use only.  */
2295 
2296 /* Various small functions to get entries in the debug symbol sections.  */
2297 
2298 static union dnttentry *
hpread_get_lntt(int index,struct objfile * objfile)2299 hpread_get_lntt (int index, struct objfile *objfile)
2300 {
2301   return (union dnttentry *)
2302     &(LNTT (objfile)[(index * sizeof (struct dntt_type_block))]);
2303 }
2304 
2305 static union dnttentry *
hpread_get_gntt(int index,struct objfile * objfile)2306 hpread_get_gntt (int index, struct objfile *objfile)
2307 {
2308   return (union dnttentry *)
2309     &(GNTT (objfile)[(index * sizeof (struct dntt_type_block))]);
2310 }
2311 
2312 static union sltentry *
hpread_get_slt(int index,struct objfile * objfile)2313 hpread_get_slt (int index, struct objfile *objfile)
2314 {
2315   return (union sltentry *) &(SLT (objfile)[index * sizeof (union sltentry)]);
2316 }
2317 
2318 /* Get the low address associated with some symbol (typically the start
2319    of a particular source file or module).  Since that information is not
2320    stored as part of the DNTT_TYPE_MODULE or DNTT_TYPE_SRCFILE symbol we
2321    must infer it from the existence of DNTT_TYPE_FUNCTION symbols.  */
2322 
2323 static unsigned long
hpread_get_textlow(int global,int index,struct objfile * objfile,int symcount)2324 hpread_get_textlow (int global, int index, struct objfile *objfile,
2325 		    int symcount)
2326 {
2327   union dnttentry *dn_bufp = NULL;
2328   struct minimal_symbol *msymbol;
2329 
2330   /* Look for a DNTT_TYPE_FUNCTION symbol.  */
2331   if (index < symcount)		/* symcount is the number of symbols in */
2332     {				/*   the dbinfo, LNTT table */
2333       do
2334 	{
2335 	  if (global)
2336 	    dn_bufp = hpread_get_gntt (index++, objfile);
2337 	  else
2338 	    dn_bufp = hpread_get_lntt (index++, objfile);
2339 	}
2340       while (dn_bufp->dblock.kind != DNTT_TYPE_FUNCTION
2341 	     && dn_bufp->dblock.kind != DNTT_TYPE_DOC_FUNCTION
2342 	     && dn_bufp->dblock.kind != DNTT_TYPE_END
2343 	     && index < symcount);
2344     }
2345 
2346   /* NOTE: cagney/2003-03-29: If !(index < symcount), dn_bufp is left
2347      undefined and that means that the test below is using a garbage
2348      pointer from the stack.  */
2349   gdb_assert (dn_bufp != NULL);
2350 
2351   /* Avoid going past a DNTT_TYPE_END when looking for a DNTT_TYPE_FUNCTION.  This
2352      might happen when a sourcefile has no functions.  */
2353   if (dn_bufp->dblock.kind == DNTT_TYPE_END)
2354     return 0;
2355 
2356   /* Avoid going past the end of the LNTT file */
2357   if (index == symcount)
2358     return 0;
2359 
2360   /* The minimal symbols are typically more accurate for some reason.  */
2361   if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION)
2362     msymbol = lookup_minimal_symbol (dn_bufp->dfunc.name + VT (objfile), NULL,
2363 				     objfile);
2364   else				/* must be a DNTT_TYPE_DOC_FUNCTION */
2365     msymbol = lookup_minimal_symbol (dn_bufp->ddocfunc.name + VT (objfile), NULL,
2366 				     objfile);
2367 
2368   if (msymbol)
2369     return SYMBOL_VALUE_ADDRESS (msymbol);
2370   else
2371     return dn_bufp->dfunc.lowaddr;
2372 }
2373 
2374 /* Allocate and partially fill a partial symtab.  It will be
2375    completely filled at the end of the symbol list.
2376 
2377    SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
2378    is the address relative to which its symbols are (incremental) or 0
2379    (normal). */
2380 
2381 static struct partial_symtab *
hpread_start_psymtab(struct objfile * objfile,char * filename,CORE_ADDR textlow,int ldsymoff,struct partial_symbol ** global_syms,struct partial_symbol ** static_syms)2382 hpread_start_psymtab (struct objfile *objfile, char *filename,
2383 		      CORE_ADDR textlow, int ldsymoff,
2384 		      struct partial_symbol **global_syms,
2385 		      struct partial_symbol **static_syms)
2386 {
2387   int offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2388   extern void hpread_psymtab_to_symtab ();
2389   struct partial_symtab *result =
2390   start_psymtab_common (objfile, objfile->section_offsets,
2391 			filename, textlow, global_syms, static_syms);
2392 
2393   result->textlow += offset;
2394   result->read_symtab_private = (char *)
2395     obstack_alloc (&objfile->objfile_obstack, sizeof (struct symloc));
2396   LDSYMOFF (result) = ldsymoff;
2397   result->read_symtab = hpread_psymtab_to_symtab;
2398 
2399   return result;
2400 }
2401 
2402 
2403 /* Close off the current usage of PST.
2404    Returns PST or NULL if the partial symtab was empty and thrown away.
2405 
2406    capping_symbol_offset  --Byte index in LNTT or GNTT of the
2407    last symbol processed during the build
2408    of the previous pst.
2409 
2410    FIXME:  List variables and peculiarities of same.  */
2411 
2412 static struct partial_symtab *
hpread_end_psymtab(struct partial_symtab * pst,char ** include_list,int num_includes,int capping_symbol_offset,CORE_ADDR capping_text,struct partial_symtab ** dependency_list,int number_dependencies)2413 hpread_end_psymtab (struct partial_symtab *pst, char **include_list,
2414 		    int num_includes, int capping_symbol_offset,
2415 		    CORE_ADDR capping_text,
2416 		    struct partial_symtab **dependency_list,
2417 		    int number_dependencies)
2418 {
2419   int i;
2420   struct objfile *objfile = pst->objfile;
2421   int offset = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (objfile));
2422 
2423 #ifdef DUMPING
2424   /* Turn on to see what kind of a psymtab we've built. */
2425   static int dumping = 0;
2426 #endif
2427 
2428   if (capping_symbol_offset != -1)
2429     LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst);
2430   else
2431     LDSYMLEN (pst) = 0;
2432   pst->texthigh = capping_text + offset;
2433 
2434   pst->n_global_syms =
2435     objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset);
2436   pst->n_static_syms =
2437     objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset);
2438 
2439 #ifdef DUMPING
2440   if (dumping)
2441     {
2442       printf ("\nPst %s, LDSYMOFF %x (%x), LDSYMLEN %x (%x), globals %d, statics %d\n",
2443 	      pst->filename,
2444 	      LDSYMOFF (pst),
2445 	      LDSYMOFF (pst) / sizeof (struct dntt_type_block),
2446 	      LDSYMLEN (pst),
2447 	      LDSYMLEN (pst) / sizeof (struct dntt_type_block),
2448 	      pst->n_global_syms, pst->n_static_syms);
2449     }
2450 #endif
2451 
2452   pst->number_of_dependencies = number_dependencies;
2453   if (number_dependencies)
2454     {
2455       pst->dependencies = (struct partial_symtab **)
2456 	obstack_alloc (&objfile->objfile_obstack,
2457 		    number_dependencies * sizeof (struct partial_symtab *));
2458       memcpy (pst->dependencies, dependency_list,
2459 	      number_dependencies * sizeof (struct partial_symtab *));
2460     }
2461   else
2462     pst->dependencies = 0;
2463 
2464   for (i = 0; i < num_includes; i++)
2465     {
2466       struct partial_symtab *subpst =
2467       allocate_psymtab (include_list[i], objfile);
2468 
2469       subpst->section_offsets = pst->section_offsets;
2470       subpst->read_symtab_private =
2471 	(char *) obstack_alloc (&objfile->objfile_obstack,
2472 				sizeof (struct symloc));
2473       LDSYMOFF (subpst) =
2474 	LDSYMLEN (subpst) =
2475 	subpst->textlow =
2476 	subpst->texthigh = 0;
2477 
2478       /* We could save slight bits of space by only making one of these,
2479          shared by the entire set of include files.  FIXME-someday.  */
2480       subpst->dependencies = (struct partial_symtab **)
2481 	obstack_alloc (&objfile->objfile_obstack,
2482 		       sizeof (struct partial_symtab *));
2483       subpst->dependencies[0] = pst;
2484       subpst->number_of_dependencies = 1;
2485 
2486       subpst->globals_offset =
2487 	subpst->n_global_syms =
2488 	subpst->statics_offset =
2489 	subpst->n_static_syms = 0;
2490 
2491       subpst->readin = 0;
2492       subpst->symtab = 0;
2493       subpst->read_symtab = pst->read_symtab;
2494     }
2495 
2496   sort_pst_symbols (pst);
2497 
2498   /* If there is already a psymtab or symtab for a file of this name, remove it.
2499      (If there is a symtab, more drastic things also happen.)
2500      This happens in VxWorks.  */
2501   free_named_symtabs (pst->filename);
2502 
2503   if (num_includes == 0
2504       && number_dependencies == 0
2505       && pst->n_global_syms == 0
2506       && pst->n_static_syms == 0)
2507     {
2508       /* Throw away this psymtab, it's empty.  We can't deallocate it, since
2509          it is on the obstack, but we can forget to chain it on the list.
2510          Empty psymtabs happen as a result of header files which don't have
2511          any symbols in them.  There can be a lot of them.  But this check
2512          is wrong, in that a psymtab with N_SLINE entries but nothing else
2513          is not empty, but we don't realize that.  Fixing that without slowing
2514          things down might be tricky.
2515          It's also wrong if we're using the quick look-up tables, as
2516          we can get empty psymtabs from modules with no routines in
2517          them. */
2518 
2519       discard_psymtab (pst);
2520 
2521       /* Indicate that psymtab was thrown away.  */
2522       pst = (struct partial_symtab *) NULL;
2523 
2524     }
2525   return pst;
2526 }
2527 
2528 
2529 /* Get the nesting depth for the source line identified by INDEX.  */
2530 
2531 static unsigned long
hpread_get_scope_start(sltpointer index,struct objfile * objfile)2532 hpread_get_scope_start (sltpointer index, struct objfile *objfile)
2533 {
2534   union sltentry *sl_bufp;
2535 
2536   sl_bufp = hpread_get_slt (index, objfile);
2537   return sl_bufp->sspec.backptr.dnttp.index;
2538 }
2539 
2540 /* Get the source line number the the line identified by INDEX.  */
2541 
2542 static unsigned long
hpread_get_line(sltpointer index,struct objfile * objfile)2543 hpread_get_line (sltpointer index, struct objfile *objfile)
2544 {
2545   union sltentry *sl_bufp;
2546 
2547   sl_bufp = hpread_get_slt (index, objfile);
2548   return sl_bufp->snorm.line;
2549 }
2550 
2551 /* Find the code address associated with a given sltpointer */
2552 
2553 static CORE_ADDR
hpread_get_location(sltpointer index,struct objfile * objfile)2554 hpread_get_location (sltpointer index, struct objfile *objfile)
2555 {
2556   union sltentry *sl_bufp;
2557   int i;
2558 
2559   /* code location of special sltentrys is determined from context */
2560   sl_bufp = hpread_get_slt (index, objfile);
2561 
2562   if (sl_bufp->snorm.sltdesc == SLT_END)
2563     {
2564       /* find previous normal sltentry and get address */
2565       for (i = 0; ((sl_bufp->snorm.sltdesc != SLT_NORMAL) &&
2566 		   (sl_bufp->snorm.sltdesc != SLT_NORMAL_OFFSET) &&
2567 		   (sl_bufp->snorm.sltdesc != SLT_EXIT)); i++)
2568 	sl_bufp = hpread_get_slt (index - i, objfile);
2569       if (sl_bufp->snorm.sltdesc == SLT_NORMAL_OFFSET)
2570 	return sl_bufp->snormoff.address;
2571       else
2572 	return sl_bufp->snorm.address;
2573     }
2574 
2575   /* find next normal sltentry and get address */
2576   for (i = 0; ((sl_bufp->snorm.sltdesc != SLT_NORMAL) &&
2577 	       (sl_bufp->snorm.sltdesc != SLT_NORMAL_OFFSET) &&
2578 	       (sl_bufp->snorm.sltdesc != SLT_EXIT)); i++)
2579     sl_bufp = hpread_get_slt (index + i, objfile);
2580   if (sl_bufp->snorm.sltdesc == SLT_NORMAL_OFFSET)
2581     return sl_bufp->snormoff.address;
2582   else
2583     return sl_bufp->snorm.address;
2584 }
2585 
2586 
2587 /* Return 1 if an HP debug symbol of type KIND has a name associated with
2588  * it, else return 0. (This function is not currently used, but I'll
2589  * leave it here in case it proves useful later on. - RT).
2590  */
2591 
2592 static int
hpread_has_name(enum dntt_entry_type kind)2593 hpread_has_name (enum dntt_entry_type kind)
2594 {
2595   switch (kind)
2596     {
2597     case DNTT_TYPE_SRCFILE:
2598     case DNTT_TYPE_MODULE:
2599     case DNTT_TYPE_FUNCTION:
2600     case DNTT_TYPE_DOC_FUNCTION:
2601     case DNTT_TYPE_ENTRY:
2602     case DNTT_TYPE_IMPORT:
2603     case DNTT_TYPE_LABEL:
2604     case DNTT_TYPE_FPARAM:
2605     case DNTT_TYPE_SVAR:
2606     case DNTT_TYPE_DVAR:
2607     case DNTT_TYPE_CONST:
2608     case DNTT_TYPE_TYPEDEF:
2609     case DNTT_TYPE_TAGDEF:
2610     case DNTT_TYPE_MEMENUM:
2611     case DNTT_TYPE_FIELD:
2612     case DNTT_TYPE_SA:
2613     case DNTT_TYPE_BLOCKDATA:
2614     case DNTT_TYPE_MEMFUNC:
2615     case DNTT_TYPE_DOC_MEMFUNC:
2616       return 1;
2617 
2618     case DNTT_TYPE_BEGIN:
2619     case DNTT_TYPE_END:
2620     case DNTT_TYPE_POINTER:
2621     case DNTT_TYPE_ENUM:
2622     case DNTT_TYPE_SET:
2623     case DNTT_TYPE_ARRAY:
2624     case DNTT_TYPE_STRUCT:
2625     case DNTT_TYPE_UNION:
2626     case DNTT_TYPE_VARIANT:
2627     case DNTT_TYPE_FILE:
2628     case DNTT_TYPE_FUNCTYPE:
2629     case DNTT_TYPE_SUBRANGE:
2630     case DNTT_TYPE_WITH:
2631     case DNTT_TYPE_COMMON:
2632     case DNTT_TYPE_COBSTRUCT:
2633     case DNTT_TYPE_XREF:
2634     case DNTT_TYPE_MACRO:
2635     case DNTT_TYPE_CLASS_SCOPE:
2636     case DNTT_TYPE_REFERENCE:
2637     case DNTT_TYPE_PTRMEM:
2638     case DNTT_TYPE_PTRMEMFUNC:
2639     case DNTT_TYPE_CLASS:
2640     case DNTT_TYPE_GENFIELD:
2641     case DNTT_TYPE_VFUNC:
2642     case DNTT_TYPE_MEMACCESS:
2643     case DNTT_TYPE_INHERITANCE:
2644     case DNTT_TYPE_FRIEND_CLASS:
2645     case DNTT_TYPE_FRIEND_FUNC:
2646     case DNTT_TYPE_MODIFIER:
2647     case DNTT_TYPE_OBJECT_ID:
2648     case DNTT_TYPE_TEMPLATE:
2649     case DNTT_TYPE_TEMPLATE_ARG:
2650     case DNTT_TYPE_FUNC_TEMPLATE:
2651     case DNTT_TYPE_LINK:
2652       /* DNTT_TYPE_DYN_ARRAY_DESC ? */
2653       /* DNTT_TYPE_DESC_SUBRANGE ? */
2654       /* DNTT_TYPE_BEGIN_EXT ? */
2655       /* DNTT_TYPE_INLN ? */
2656       /* DNTT_TYPE_INLN_LIST ? */
2657       /* DNTT_TYPE_ALIAS ? */
2658     default:
2659       return 0;
2660     }
2661 }
2662 
2663 /* Do the dirty work of reading in the full symbol from a partial symbol
2664    table.  */
2665 
2666 static void
hpread_psymtab_to_symtab_1(struct partial_symtab * pst)2667 hpread_psymtab_to_symtab_1 (struct partial_symtab *pst)
2668 {
2669   struct cleanup *old_chain;
2670   int i;
2671 
2672   /* Get out quick if passed junk.  */
2673   if (!pst)
2674     return;
2675 
2676   /* Complain if we've already read in this symbol table.  */
2677   if (pst->readin)
2678     {
2679       fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in."
2680 			  "  Shouldn't happen.\n",
2681 			  pst->filename);
2682       return;
2683     }
2684 
2685   /* Read in all partial symtabs on which this one is dependent */
2686   for (i = 0; i < pst->number_of_dependencies; i++)
2687     if (!pst->dependencies[i]->readin)
2688       {
2689 	/* Inform about additional files that need to be read in.  */
2690 	if (info_verbose)
2691 	  {
2692 	    fputs_filtered (" ", gdb_stdout);
2693 	    wrap_here ("");
2694 	    fputs_filtered ("and ", gdb_stdout);
2695 	    wrap_here ("");
2696 	    printf_filtered ("%s...", pst->dependencies[i]->filename);
2697 	    wrap_here ("");	/* Flush output */
2698 	    gdb_flush (gdb_stdout);
2699 	  }
2700 	hpread_psymtab_to_symtab_1 (pst->dependencies[i]);
2701       }
2702 
2703   /* If it's real...  */
2704   if (LDSYMLEN (pst))
2705     {
2706       /* Init stuff necessary for reading in symbols */
2707       buildsym_init ();
2708       old_chain = make_cleanup (really_free_pendings, 0);
2709 
2710       pst->symtab =
2711 	hpread_expand_symtab (pst->objfile, LDSYMOFF (pst), LDSYMLEN (pst),
2712 			      pst->textlow, pst->texthigh - pst->textlow,
2713 			      pst->section_offsets, pst->filename);
2714 
2715       do_cleanups (old_chain);
2716     }
2717 
2718   pst->readin = 1;
2719 }
2720 
2721 /* Read in all of the symbols for a given psymtab for real.
2722    Be verbose about it if the user wants that.  */
2723 
2724 static void
hpread_psymtab_to_symtab(struct partial_symtab * pst)2725 hpread_psymtab_to_symtab (struct partial_symtab *pst)
2726 {
2727   /* Get out quick if given junk.  */
2728   if (!pst)
2729     return;
2730 
2731   /* Sanity check.  */
2732   if (pst->readin)
2733     {
2734       fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in."
2735 			  "  Shouldn't happen.\n",
2736 			  pst->filename);
2737       return;
2738     }
2739 
2740   /* elz: setting the flag to indicate that the code of the target
2741      was compiled using an HP compiler (aCC, cc)
2742      the processing_acc_compilation variable is declared in the
2743      file buildsym.h, the HP_COMPILED_TARGET is defined to be equal
2744      to 3 in the file tm_hppa.h */
2745 
2746   processing_gcc_compilation = 0;
2747 
2748   if (LDSYMLEN (pst) || pst->number_of_dependencies)
2749     {
2750       /* Print the message now, before reading the string table,
2751          to avoid disconcerting pauses.  */
2752       if (info_verbose)
2753 	{
2754 	  printf_filtered ("Reading in symbols for %s...", pst->filename);
2755 	  gdb_flush (gdb_stdout);
2756 	}
2757 
2758       hpread_psymtab_to_symtab_1 (pst);
2759 
2760       /* Match with global symbols.  This only needs to be done once,
2761          after all of the symtabs and dependencies have been read in.   */
2762       scan_file_globals (pst->objfile);
2763 
2764       /* Finish up the debug error message.  */
2765       if (info_verbose)
2766 	printf_filtered ("done.\n");
2767     }
2768 }
2769 
2770 /* Read in a defined section of a specific object file's symbols.
2771 
2772    DESC is the file descriptor for the file, positioned at the
2773    beginning of the symtab
2774    SYM_OFFSET is the offset within the file of
2775    the beginning of the symbols we want to read
2776    SYM_SIZE is the size of the symbol info to read in.
2777    TEXT_OFFSET is the beginning of the text segment we are reading symbols for
2778    TEXT_SIZE is the size of the text segment read in.
2779    SECTION_OFFSETS are the relocation offsets which get added to each symbol. */
2780 
2781 static struct symtab *
hpread_expand_symtab(struct objfile * objfile,int sym_offset,int sym_size,CORE_ADDR text_offset,int text_size,struct section_offsets * section_offsets,char * filename)2782 hpread_expand_symtab (struct objfile *objfile, int sym_offset, int sym_size,
2783 		      CORE_ADDR text_offset, int text_size,
2784 		      struct section_offsets *section_offsets, char *filename)
2785 {
2786   char *namestring;
2787   union dnttentry *dn_bufp;
2788   unsigned max_symnum;
2789   int at_module_boundary = 0;
2790   /* 1 => at end, -1 => at beginning */
2791 
2792   int sym_index = sym_offset / sizeof (struct dntt_type_block);
2793 
2794   current_objfile = objfile;
2795   subfile_stack = 0;
2796 
2797   last_source_file = 0;
2798 
2799   /* Demangling style -- if EDG style already set, don't change it,
2800      as HP style causes some problems with the KAI EDG compiler */
2801   if (current_demangling_style != edg_demangling)
2802     {
2803       /* Otherwise, ensure that we are using HP style demangling */
2804       set_demangling_style (HP_DEMANGLING_STYLE_STRING);
2805     }
2806 
2807   dn_bufp = hpread_get_lntt (sym_index, objfile);
2808   if (!((dn_bufp->dblock.kind == (unsigned char) DNTT_TYPE_SRCFILE) ||
2809 	(dn_bufp->dblock.kind == (unsigned char) DNTT_TYPE_MODULE)))
2810     {
2811       start_symtab ("globals", NULL, 0);
2812       record_debugformat ("HP");
2813     }
2814 
2815   /* The psymtab builder (hp-psymtab-read.c) is the one that
2816    * determined the "sym_size" argument (i.e. how many DNTT symbols
2817    * are in this symtab), which we use to compute "max_symnum"
2818    * (point in DNTT to which we read).
2819    *
2820    * Perhaps this should be changed so that
2821    * process_one_debug_symbol() "knows" when
2822    * to stop reading (based on reading from the MODULE to the matching
2823    * END), and take out this reliance on a #-syms being passed in...
2824    * (I'm worried about the reliability of this number). But I'll
2825    * leave it as-is, for now. - RT
2826    *
2827    * The change above has been made. I've left the "for" loop control
2828    * in to prepare for backing this out again. -JB
2829    */
2830   max_symnum = sym_size / sizeof (struct dntt_type_block);
2831   /* No reason to multiply on pst side and divide on sym side... FIXME */
2832 
2833   /* Read in and process each debug symbol within the specified range.
2834    */
2835   for (symnum = 0;
2836        symnum < max_symnum;
2837        symnum++)
2838     {
2839       QUIT;			/* Allow this to be interruptable */
2840       dn_bufp = hpread_get_lntt (sym_index + symnum, objfile);
2841 
2842       if (dn_bufp->dblock.extension)
2843 	continue;
2844 
2845       /* Yow!  We call set_namestring on things without names!  */
2846       set_namestring (dn_bufp, &namestring, objfile);
2847 
2848       hpread_process_one_debug_symbol (dn_bufp, namestring, section_offsets,
2849 				       objfile, text_offset, text_size,
2850 				       filename, symnum + sym_index,
2851 				       &at_module_boundary
2852 	);
2853 
2854       /* OLD COMMENTS: This routine is only called for psts.  All psts
2855        * correspond to MODULES.  If we ever do lazy-reading of globals
2856        * from the LNTT, then there will be a pst which ends when the
2857        * LNTT ends, and not at an END MODULE entry.  Then we'll have
2858        * to re-visit this break.
2859 
2860        if( at_end_of_module )
2861        break;
2862 
2863        */
2864 
2865       /* We no longer break out of the loop when we reach the end of a
2866          module. The reason is that with CTTI, the compiler can generate
2867          function symbols (for template function instantiations) which are not
2868          in any module; typically they show up beyond a module's end, and
2869          before the next module's start.  We include them in the current
2870          module.  However, we still don't trust the MAX_SYMNUM value from
2871          the psymtab, so we break out if we enter a new module. */
2872 
2873       if (at_module_boundary == -1)
2874 	break;
2875     }
2876 
2877   current_objfile = NULL;
2878   deprecated_hp_som_som_object_present = 1;	/* Indicate we've processed an HP SOM SOM file */
2879 
2880   return end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile));
2881 }
2882 
2883 
2884 
2885 
2886 /* Convert basic types from HP debug format into GDB internal format.  */
2887 
2888 static int
hpread_type_translate(dnttpointer typep)2889 hpread_type_translate (dnttpointer typep)
2890 {
2891   if (!typep.dntti.immediate)
2892     {
2893       error ("error in hpread_type_translate\n.");
2894       return FT_VOID;
2895     }
2896 
2897   switch (typep.dntti.type)
2898     {
2899     case HP_TYPE_BOOLEAN:
2900     case HP_TYPE_BOOLEAN_S300_COMPAT:
2901     case HP_TYPE_BOOLEAN_VAX_COMPAT:
2902       return FT_BOOLEAN;
2903     case HP_TYPE_CHAR:		/* C signed char, C++ plain char */
2904 
2905     case HP_TYPE_WIDE_CHAR:
2906       return FT_CHAR;
2907     case HP_TYPE_INT:
2908       if (typep.dntti.bitlength <= 8)
2909 	return FT_SIGNED_CHAR;	/* C++ signed char */
2910       if (typep.dntti.bitlength <= 16)
2911 	return FT_SHORT;
2912       if (typep.dntti.bitlength <= 32)
2913 	return FT_INTEGER;
2914       return FT_LONG_LONG;
2915     case HP_TYPE_LONG:
2916       if (typep.dntti.bitlength <= 8)
2917 	return FT_SIGNED_CHAR;	/* C++ signed char. */
2918       return FT_LONG;
2919     case HP_TYPE_UNSIGNED_LONG:
2920       if (typep.dntti.bitlength <= 8)
2921 	return FT_UNSIGNED_CHAR;	/* C/C++ unsigned char */
2922       if (typep.dntti.bitlength <= 16)
2923 	return FT_UNSIGNED_SHORT;
2924       if (typep.dntti.bitlength <= 32)
2925 	return FT_UNSIGNED_LONG;
2926       return FT_UNSIGNED_LONG_LONG;
2927     case HP_TYPE_UNSIGNED_INT:
2928       if (typep.dntti.bitlength <= 8)
2929 	return FT_UNSIGNED_CHAR;
2930       if (typep.dntti.bitlength <= 16)
2931 	return FT_UNSIGNED_SHORT;
2932       if (typep.dntti.bitlength <= 32)
2933 	return FT_UNSIGNED_INTEGER;
2934       return FT_UNSIGNED_LONG_LONG;
2935     case HP_TYPE_REAL:
2936     case HP_TYPE_REAL_3000:
2937     case HP_TYPE_DOUBLE:
2938       if (typep.dntti.bitlength == 64)
2939 	return FT_DBL_PREC_FLOAT;
2940       if (typep.dntti.bitlength == 128)
2941 	return FT_EXT_PREC_FLOAT;
2942       return FT_FLOAT;
2943     case HP_TYPE_COMPLEX:
2944     case HP_TYPE_COMPLEXS3000:
2945       if (typep.dntti.bitlength == 128)
2946 	return FT_DBL_PREC_COMPLEX;
2947       if (typep.dntti.bitlength == 192)
2948 	return FT_EXT_PREC_COMPLEX;
2949       return FT_COMPLEX;
2950     case HP_TYPE_VOID:
2951       return FT_VOID;
2952     case HP_TYPE_STRING200:
2953     case HP_TYPE_LONGSTRING200:
2954     case HP_TYPE_FTN_STRING_SPEC:
2955     case HP_TYPE_MOD_STRING_SPEC:
2956     case HP_TYPE_MOD_STRING_3000:
2957     case HP_TYPE_FTN_STRING_S300_COMPAT:
2958     case HP_TYPE_FTN_STRING_VAX_COMPAT:
2959       return FT_STRING;
2960     case HP_TYPE_TEMPLATE_ARG:
2961       return FT_TEMPLATE_ARG;
2962     case HP_TYPE_TEXT:
2963     case HP_TYPE_FLABEL:
2964     case HP_TYPE_PACKED_DECIMAL:
2965     case HP_TYPE_ANYPOINTER:
2966     case HP_TYPE_GLOBAL_ANYPOINTER:
2967     case HP_TYPE_LOCAL_ANYPOINTER:
2968     default:
2969       warning ("hpread_type_translate: unhandled type code.\n");
2970       return FT_VOID;
2971     }
2972 }
2973 
2974 /* Given a position in the DNTT, return a pointer to the
2975  * already-built "struct type" (if any), for the type defined
2976  * at that position.
2977  */
2978 
2979 static struct type **
hpread_lookup_type(dnttpointer hp_type,struct objfile * objfile)2980 hpread_lookup_type (dnttpointer hp_type, struct objfile *objfile)
2981 {
2982   unsigned old_len;
2983   int index = hp_type.dnttp.index;
2984   int size_changed = 0;
2985 
2986   /* The immediate flag indicates this doesn't actually point to
2987    * a type DNTT.
2988    */
2989   if (hp_type.dntti.immediate)
2990     return NULL;
2991 
2992   /* For each objfile, we maintain a "type vector".
2993    * This an array of "struct type *"'s with one pointer per DNTT index.
2994    * Given a DNTT index, we look in this array to see if we have
2995    * already processed this DNTT and if it is a type definition.
2996    * If so, then we can locate a pointer to the already-built
2997    * "struct type", and not build it again.
2998    *
2999    * The need for this arises because our DNTT-walking code wanders
3000    * around. In particular, it will encounter the same type multiple
3001    * times (once for each object of that type). We don't want to
3002    * built multiple "struct type"'s for the same thing.
3003    *
3004    * Having said this, I should point out that this type-vector is
3005    * an expensive way to keep track of this. If most DNTT entries are
3006    * 3 words, the type-vector will be 1/3 the size of the DNTT itself.
3007    * Alternative solutions:
3008    * - Keep a compressed or hashed table. Less memory, but more expensive
3009    *   to search and update.
3010    * - (Suggested by JB): Overwrite the DNTT entry itself
3011    *   with the info. Create a new type code "ALREADY_BUILT", and modify
3012    *   the DNTT to have that type code and point to the already-built entry.
3013    * -RT
3014    */
3015 
3016   if (index < LNTT_SYMCOUNT (objfile))
3017     {
3018       if (index >= DNTT_TYPE_VECTOR_LENGTH (objfile))
3019 	{
3020 	  old_len = DNTT_TYPE_VECTOR_LENGTH (objfile);
3021 
3022 	  /* See if we need to allocate a type-vector. */
3023 	  if (old_len == 0)
3024 	    {
3025 	      DNTT_TYPE_VECTOR_LENGTH (objfile) = LNTT_SYMCOUNT (objfile) + GNTT_SYMCOUNT (objfile);
3026 	      DNTT_TYPE_VECTOR (objfile) = (struct type **)
3027 		xmmalloc (objfile->md, DNTT_TYPE_VECTOR_LENGTH (objfile) * sizeof (struct type *));
3028 	      memset (&DNTT_TYPE_VECTOR (objfile)[old_len], 0,
3029 		      (DNTT_TYPE_VECTOR_LENGTH (objfile) - old_len) *
3030 		      sizeof (struct type *));
3031 	    }
3032 
3033 	  /* See if we need to resize type-vector. With my change to
3034 	   * initially allocate a correct-size type-vector, this code
3035 	   * should no longer trigger.
3036 	   */
3037 	  while (index >= DNTT_TYPE_VECTOR_LENGTH (objfile))
3038 	    {
3039 	      DNTT_TYPE_VECTOR_LENGTH (objfile) *= 2;
3040 	      size_changed = 1;
3041 	    }
3042 	  if (size_changed)
3043 	    {
3044 	      DNTT_TYPE_VECTOR (objfile) = (struct type **)
3045 		xmrealloc (objfile->md,
3046 			   (char *) DNTT_TYPE_VECTOR (objfile),
3047 		   (DNTT_TYPE_VECTOR_LENGTH (objfile) * sizeof (struct type *)));
3048 
3049 	      memset (&DNTT_TYPE_VECTOR (objfile)[old_len], 0,
3050 		      (DNTT_TYPE_VECTOR_LENGTH (objfile) - old_len) *
3051 		      sizeof (struct type *));
3052 	    }
3053 
3054 	}
3055       return &DNTT_TYPE_VECTOR (objfile)[index];
3056     }
3057   else
3058     return NULL;
3059 }
3060 
3061 /* Possibly allocate a GDB internal type so we can internalize HP_TYPE.
3062    Note we'll just return the address of a GDB internal type if we already
3063    have it lying around.  */
3064 
3065 static struct type *
hpread_alloc_type(dnttpointer hp_type,struct objfile * objfile)3066 hpread_alloc_type (dnttpointer hp_type, struct objfile *objfile)
3067 {
3068   struct type **type_addr;
3069 
3070   type_addr = hpread_lookup_type (hp_type, objfile);
3071   if (*type_addr == 0)
3072     {
3073       *type_addr = alloc_type (objfile);
3074 
3075       /* A hack - if we really are a C++ class symbol, then this default
3076        * will get overriden later on.
3077        */
3078       TYPE_CPLUS_SPECIFIC (*type_addr)
3079 	= (struct cplus_struct_type *) &cplus_struct_default;
3080     }
3081 
3082   return *type_addr;
3083 }
3084 
3085 /* Read a native enumerated type and return it in GDB internal form.  */
3086 
3087 static struct type *
hpread_read_enum_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile)3088 hpread_read_enum_type (dnttpointer hp_type, union dnttentry *dn_bufp,
3089 		       struct objfile *objfile)
3090 {
3091   struct type *type;
3092   struct pending **symlist, *osyms, *syms;
3093   struct pending *local_list = NULL;
3094   int o_nsyms, nsyms = 0;
3095   dnttpointer mem;
3096   union dnttentry *memp;
3097   char *name;
3098   long n;
3099   struct symbol *sym;
3100 
3101   /* Allocate a GDB type. If we've already read in this enum type,
3102    * it'll return the already built GDB type, so stop here.
3103    * (Note: I added this check, to conform with what's done for
3104    *  struct, union, class.
3105    *  I assume this is OK. - RT)
3106    */
3107   type = hpread_alloc_type (hp_type, objfile);
3108   if (TYPE_CODE (type) == TYPE_CODE_ENUM)
3109     return type;
3110 
3111   /* HP C supports "sized enums", where a specifier such as "short" or
3112      "char" can be used to get enums of different sizes. So don't assume
3113      an enum is always 4 bytes long. pai/1997-08-21 */
3114   TYPE_LENGTH (type) = dn_bufp->denum.bitlength / 8;
3115 
3116   symlist = &file_symbols;
3117   osyms = *symlist;
3118   o_nsyms = osyms ? osyms->nsyms : 0;
3119 
3120   /* Get a name for each member and add it to our list of members.
3121    * The list of "mem" SOM records we are walking should all be
3122    * SOM type DNTT_TYPE_MEMENUM (not checked).
3123    */
3124   mem = dn_bufp->denum.firstmem;
3125   while (mem.word && mem.word != DNTTNIL)
3126     {
3127       memp = hpread_get_lntt (mem.dnttp.index, objfile);
3128 
3129       name = VT (objfile) + memp->dmember.name;
3130       sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
3131 					     sizeof (struct symbol));
3132       memset (sym, 0, sizeof (struct symbol));
3133       DEPRECATED_SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
3134 					&objfile->objfile_obstack);
3135       SYMBOL_CLASS (sym) = LOC_CONST;
3136       SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
3137       SYMBOL_VALUE (sym) = memp->dmember.value;
3138       add_symbol_to_list (sym, symlist);
3139       nsyms++;
3140       mem = memp->dmember.nextmem;
3141     }
3142 
3143   /* Now that we know more about the enum, fill in more info.  */
3144   TYPE_CODE (type) = TYPE_CODE_ENUM;
3145   TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3146   TYPE_NFIELDS (type) = nsyms;
3147   TYPE_FIELDS (type) = (struct field *)
3148     obstack_alloc (&objfile->objfile_obstack, sizeof (struct field) * nsyms);
3149 
3150   /* Find the symbols for the members and put them into the type.
3151      The symbols can be found in the symlist that we put them on
3152      to cause them to be defined.  osyms contains the old value
3153      of that symlist; everything up to there was defined by us.
3154 
3155      Note that we preserve the order of the enum constants, so
3156      that in something like "enum {FOO, LAST_THING=FOO}" we print
3157      FOO, not LAST_THING.  */
3158   for (syms = *symlist, n = 0; syms; syms = syms->next)
3159     {
3160       int j = 0;
3161       if (syms == osyms)
3162 	j = o_nsyms;
3163       for (; j < syms->nsyms; j++, n++)
3164 	{
3165 	  struct symbol *xsym = syms->symbol[j];
3166 	  SYMBOL_TYPE (xsym) = type;
3167 	  TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
3168 	  TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
3169 	  TYPE_FIELD_BITSIZE (type, n) = 0;
3170 	  TYPE_FIELD_STATIC_KIND (type, n) = 0;
3171 	}
3172       if (syms == osyms)
3173 	break;
3174     }
3175 
3176   return type;
3177 }
3178 
3179 /* Read and internalize a native function debug symbol.  */
3180 
3181 static struct type *
hpread_read_function_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile,int newblock)3182 hpread_read_function_type (dnttpointer hp_type, union dnttentry *dn_bufp,
3183 			   struct objfile *objfile, int newblock)
3184 {
3185   struct type *type, *type1;
3186   struct pending *syms;
3187   struct pending *local_list = NULL;
3188   int nsyms = 0;
3189   dnttpointer param;
3190   union dnttentry *paramp;
3191   char *name;
3192   long n;
3193   struct symbol *sym;
3194   int record_args = 1;
3195 
3196   /* See if we've already read in this type.  */
3197   type = hpread_alloc_type (hp_type, objfile);
3198   if (TYPE_CODE (type) == TYPE_CODE_FUNC)
3199     {
3200       record_args = 0;		/* already read in, don't modify type */
3201     }
3202   else
3203     {
3204       /* Nope, so read it in and store it away.  */
3205       if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION ||
3206 	  dn_bufp->dblock.kind == DNTT_TYPE_MEMFUNC)
3207 	type1 = lookup_function_type (hpread_type_lookup (dn_bufp->dfunc.retval,
3208 							  objfile));
3209       else if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTYPE)
3210 	type1 = lookup_function_type (hpread_type_lookup (dn_bufp->dfunctype.retval,
3211 							  objfile));
3212       else			/* expect DNTT_TYPE_FUNC_TEMPLATE */
3213 	type1 = lookup_function_type (hpread_type_lookup (dn_bufp->dfunc_template.retval,
3214 							  objfile));
3215       replace_type (type, type1);
3216 
3217       /* Mark it -- in the middle of processing */
3218       TYPE_FLAGS (type) |= TYPE_FLAG_INCOMPLETE;
3219     }
3220 
3221   /* Now examine each parameter noting its type, location, and a
3222      wealth of other information.  */
3223   if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION ||
3224       dn_bufp->dblock.kind == DNTT_TYPE_MEMFUNC)
3225     param = dn_bufp->dfunc.firstparam;
3226   else if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTYPE)
3227     param = dn_bufp->dfunctype.firstparam;
3228   else				/* expect DNTT_TYPE_FUNC_TEMPLATE */
3229     param = dn_bufp->dfunc_template.firstparam;
3230   while (param.word && param.word != DNTTNIL)
3231     {
3232       paramp = hpread_get_lntt (param.dnttp.index, objfile);
3233       nsyms++;
3234       param = paramp->dfparam.nextparam;
3235 
3236       /* Get the name.  */
3237       name = VT (objfile) + paramp->dfparam.name;
3238       sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
3239 					     sizeof (struct symbol));
3240       (void) memset (sym, 0, sizeof (struct symbol));
3241       DEPRECATED_SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
3242 					&objfile->objfile_obstack);
3243 
3244       /* Figure out where it lives.  */
3245       if (paramp->dfparam.regparam)
3246 	SYMBOL_CLASS (sym) = LOC_REGPARM;
3247       else if (paramp->dfparam.indirect)
3248 	SYMBOL_CLASS (sym) = LOC_REF_ARG;
3249       else
3250 	SYMBOL_CLASS (sym) = LOC_ARG;
3251       SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
3252       if (paramp->dfparam.copyparam)
3253 	{
3254 	  SYMBOL_VALUE (sym) = paramp->dfparam.location;
3255 	  SYMBOL_VALUE (sym)
3256 	    += hpread_adjust_stack_address (CURRENT_FUNCTION_VALUE (objfile));
3257 
3258 	  /* This is likely a pass-by-invisible reference parameter,
3259 	     Hack on the symbol class to make GDB happy.  */
3260 	  /* ??rehrauer: This appears to be broken w/r/t to passing
3261 	     C values of type float and struct.  Perhaps this ought
3262 	     to be highighted as a special case, but for now, just
3263 	     allowing these to be LOC_ARGs seems to work fine.
3264 	   */
3265 #if 0
3266 	  SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
3267 #endif
3268 	}
3269       else
3270 	SYMBOL_VALUE (sym) = paramp->dfparam.location;
3271 
3272       /* Get its type.  */
3273       SYMBOL_TYPE (sym) = hpread_type_lookup (paramp->dfparam.type, objfile);
3274       /* Add it to the symbol list.  */
3275       /* Note 1 (RT) At the moment, add_symbol_to_list() is also being
3276        * called on FPARAM symbols from the process_one_debug_symbol()
3277        * level... so parameters are getting added twice! (this shows
3278        * up in the symbol dump you get from "maint print symbols ...").
3279        * Note 2 (RT) I took out the processing of FPARAM from the
3280        * process_one_debug_symbol() level, so at the moment parameters are only
3281        * being processed here. This seems to have no ill effect.
3282        */
3283       /* Note 3 (pai/1997-08-11) I removed the add_symbol_to_list() which put
3284          each fparam on the local_symbols list from here.  Now we use the
3285          local_list to which fparams are added below, and set the param_symbols
3286          global to point to that at the end of this routine. */
3287       /* elz: I added this new list of symbols which is local to the function.
3288          this list is the one which is actually used to build the type for the
3289          function rather than the gloabal list pointed to by symlist.
3290          Using a global list to keep track of the parameters is wrong, because
3291          this function is called recursively if one parameter happend to be
3292          a function itself with more parameters in it. Adding parameters to the
3293          same global symbol list would not work!
3294          Actually it did work in case of cc compiled programs where you do
3295          not check the parameter lists of the arguments. */
3296       add_symbol_to_list (sym, &local_list);
3297 
3298     }
3299 
3300   /* If type was read in earlier, don't bother with modifying
3301      the type struct */
3302   if (!record_args)
3303     goto finish;
3304 
3305   /* Note how many parameters we found.  */
3306   TYPE_NFIELDS (type) = nsyms;
3307   TYPE_FIELDS (type) = (struct field *)
3308     obstack_alloc (&objfile->objfile_obstack,
3309 		   sizeof (struct field) * nsyms);
3310 
3311   /* Find the symbols for the parameters and
3312      use them to fill parameter-type information into the function-type.
3313      The parameter symbols can be found in the local_list that we just put them on. */
3314   /* Note that we preserve the order of the parameters, so
3315      that in something like "enum {FOO, LAST_THING=FOO}" we print
3316      FOO, not LAST_THING.  */
3317 
3318   /* get the parameters types from the local list not the global list
3319      so that the type can be correctly constructed for functions which
3320      have function as parameters */
3321   for (syms = local_list, n = 0; syms; syms = syms->next)
3322     {
3323       int j = 0;
3324       for (j = 0; j < syms->nsyms; j++, n++)
3325 	{
3326 	  struct symbol *xsym = syms->symbol[j];
3327 	  TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
3328 	  TYPE_FIELD_TYPE (type, n) = SYMBOL_TYPE (xsym);
3329 	  TYPE_FIELD_ARTIFICIAL (type, n) = 0;
3330 	  TYPE_FIELD_BITSIZE (type, n) = 0;
3331 	  TYPE_FIELD_STATIC_KIND (type, n) = 0;
3332 	}
3333     }
3334   /* Mark it as having been processed */
3335   TYPE_FLAGS (type) &= ~(TYPE_FLAG_INCOMPLETE);
3336 
3337   /* Check whether we need to fix-up a class type with this function's type */
3338   if (fixup_class && (fixup_method == type))
3339     {
3340       fixup_class_method_type (fixup_class, fixup_method, objfile);
3341       fixup_class = NULL;
3342       fixup_method = NULL;
3343     }
3344 
3345   /* Set the param list of this level of the context stack
3346      to our local list.  Do this only if this function was
3347      called for creating a new block, and not if it was called
3348      simply to get the function type. This prevents recursive
3349      invocations from trashing param_symbols. */
3350 finish:
3351   if (newblock)
3352     param_symbols = local_list;
3353 
3354   return type;
3355 }
3356 
3357 
3358 /* Read and internalize a native DOC function debug symbol.  */
3359 /* This is almost identical to hpread_read_function_type(), except
3360  * for references to dn_bufp->ddocfunc instead of db_bufp->dfunc.
3361  * Since debug information for DOC functions is more likely to be
3362  * volatile, please leave it this way.
3363  */
3364 static struct type *
hpread_read_doc_function_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile,int newblock)3365 hpread_read_doc_function_type (dnttpointer hp_type, union dnttentry *dn_bufp,
3366 			       struct objfile *objfile, int newblock)
3367 {
3368   struct pending *syms;
3369   struct pending *local_list = NULL;
3370   int nsyms = 0;
3371   struct type *type;
3372   dnttpointer param;
3373   union dnttentry *paramp;
3374   char *name;
3375   long n;
3376   struct symbol *sym;
3377   int record_args = 1;
3378 
3379   /* See if we've already read in this type.  */
3380   type = hpread_alloc_type (hp_type, objfile);
3381   if (TYPE_CODE (type) == TYPE_CODE_FUNC)
3382     {
3383       record_args = 0;		/* already read in, don't modify type */
3384     }
3385   else
3386     {
3387       struct type *type1 = NULL;
3388       /* Nope, so read it in and store it away.  */
3389       if (dn_bufp->dblock.kind == DNTT_TYPE_DOC_FUNCTION ||
3390 	  dn_bufp->dblock.kind == DNTT_TYPE_DOC_MEMFUNC)
3391 	type1 = lookup_function_type (hpread_type_lookup (dn_bufp->ddocfunc.retval,
3392 							  objfile));
3393       /* NOTE: cagney/2003-03-29: Oh, no not again.  TYPE1 is
3394          potentially left undefined here.  Assert it isn't and hope
3395          the assert never fails ...  */
3396       gdb_assert (type1 != NULL);
3397 
3398       replace_type (type, type1);
3399 
3400       /* Mark it -- in the middle of processing */
3401       TYPE_FLAGS (type) |= TYPE_FLAG_INCOMPLETE;
3402     }
3403 
3404   /* Now examine each parameter noting its type, location, and a
3405      wealth of other information.  */
3406   if (dn_bufp->dblock.kind == DNTT_TYPE_DOC_FUNCTION ||
3407       dn_bufp->dblock.kind == DNTT_TYPE_DOC_MEMFUNC)
3408     param = dn_bufp->ddocfunc.firstparam;
3409   while (param.word && param.word != DNTTNIL)
3410     {
3411       paramp = hpread_get_lntt (param.dnttp.index, objfile);
3412       nsyms++;
3413       param = paramp->dfparam.nextparam;
3414 
3415       /* Get the name.  */
3416       name = VT (objfile) + paramp->dfparam.name;
3417       sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
3418 					     sizeof (struct symbol));
3419       (void) memset (sym, 0, sizeof (struct symbol));
3420       DEPRECATED_SYMBOL_NAME (sym) = name;
3421 
3422       /* Figure out where it lives.  */
3423       if (paramp->dfparam.regparam)
3424 	SYMBOL_CLASS (sym) = LOC_REGPARM;
3425       else if (paramp->dfparam.indirect)
3426 	SYMBOL_CLASS (sym) = LOC_REF_ARG;
3427       else
3428 	SYMBOL_CLASS (sym) = LOC_ARG;
3429       SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
3430       if (paramp->dfparam.copyparam)
3431 	{
3432 	  SYMBOL_VALUE (sym) = paramp->dfparam.location;
3433 	  SYMBOL_VALUE (sym)
3434 	    += hpread_adjust_stack_address(CURRENT_FUNCTION_VALUE (objfile));
3435 
3436 	  /* This is likely a pass-by-invisible reference parameter,
3437 	     Hack on the symbol class to make GDB happy.  */
3438 	  /* ??rehrauer: This appears to be broken w/r/t to passing
3439 	     C values of type float and struct.  Perhaps this ought
3440 	     to be highighted as a special case, but for now, just
3441 	     allowing these to be LOC_ARGs seems to work fine.
3442 	   */
3443 #if 0
3444 	  SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
3445 #endif
3446 	}
3447       else
3448 	SYMBOL_VALUE (sym) = paramp->dfparam.location;
3449 
3450       /* Get its type.  */
3451       SYMBOL_TYPE (sym) = hpread_type_lookup (paramp->dfparam.type, objfile);
3452       /* Add it to the symbol list.  */
3453       /* Note 1 (RT) At the moment, add_symbol_to_list() is also being
3454        * called on FPARAM symbols from the process_one_debug_symbol()
3455        * level... so parameters are getting added twice! (this shows
3456        * up in the symbol dump you get from "maint print symbols ...").
3457        * Note 2 (RT) I took out the processing of FPARAM from the
3458        * process_one_debug_symbol() level, so at the moment parameters are only
3459        * being processed here. This seems to have no ill effect.
3460        */
3461       /* Note 3 (pai/1997-08-11) I removed the add_symbol_to_list() which put
3462          each fparam on the local_symbols list from here.  Now we use the
3463          local_list to which fparams are added below, and set the param_symbols
3464          global to point to that at the end of this routine. */
3465 
3466       /* elz: I added this new list of symbols which is local to the function.
3467          this list is the one which is actually used to build the type for the
3468          function rather than the gloabal list pointed to by symlist.
3469          Using a global list to keep track of the parameters is wrong, because
3470          this function is called recursively if one parameter happend to be
3471          a function itself with more parameters in it. Adding parameters to the
3472          same global symbol list would not work!
3473          Actually it did work in case of cc compiled programs where you do not check the
3474          parameter lists of the arguments.  */
3475       add_symbol_to_list (sym, &local_list);
3476     }
3477 
3478   /* If type was read in earlier, don't bother with modifying
3479      the type struct */
3480   if (!record_args)
3481     goto finish;
3482 
3483   /* Note how many parameters we found.  */
3484   TYPE_NFIELDS (type) = nsyms;
3485   TYPE_FIELDS (type) = (struct field *)
3486     obstack_alloc (&objfile->objfile_obstack,
3487 		   sizeof (struct field) * nsyms);
3488 
3489   /* Find the symbols for the parameters and
3490      use them to fill parameter-type information into the function-type.
3491      The parameter symbols can be found in the local_list that we just put them on. */
3492   /* Note that we preserve the order of the parameters, so
3493      that in something like "enum {FOO, LAST_THING=FOO}" we print
3494      FOO, not LAST_THING.  */
3495 
3496   /* get the parameters types from the local list not the global list
3497      so that the type can be correctly constructed for functions which
3498      have function as parameters
3499    */
3500   for (syms = local_list, n = 0; syms; syms = syms->next)
3501     {
3502       int j = 0;
3503       for (j = 0; j < syms->nsyms; j++, n++)
3504 	{
3505 	  struct symbol *xsym = syms->symbol[j];
3506 	  TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
3507 	  TYPE_FIELD_TYPE (type, n) = SYMBOL_TYPE (xsym);
3508 	  TYPE_FIELD_ARTIFICIAL (type, n) = 0;
3509 	  TYPE_FIELD_BITSIZE (type, n) = 0;
3510 	  TYPE_FIELD_STATIC_KIND (type, n) = 0;
3511 	}
3512     }
3513 
3514   /* Mark it as having been processed */
3515   TYPE_FLAGS (type) &= ~(TYPE_FLAG_INCOMPLETE);
3516 
3517   /* Check whether we need to fix-up a class type with this function's type */
3518   if (fixup_class && (fixup_method == type))
3519     {
3520       fixup_class_method_type (fixup_class, fixup_method, objfile);
3521       fixup_class = NULL;
3522       fixup_method = NULL;
3523     }
3524 
3525   /* Set the param list of this level of the context stack
3526      to our local list.  Do this only if this function was
3527      called for creating a new block, and not if it was called
3528      simply to get the function type. This prevents recursive
3529      invocations from trashing param_symbols. */
3530 finish:
3531   if (newblock)
3532     param_symbols = local_list;
3533 
3534   return type;
3535 }
3536 
3537 
3538 
3539 /* A file-level variable which keeps track of the current-template
3540  * being processed. Set in hpread_read_struct_type() while processing
3541  * a template type. Referred to in hpread_get_nth_templ_arg().
3542  * Yes, this is a kludge, but it arises from the kludge that already
3543  * exists in symtab.h, namely the fact that they encode
3544  * "template argument n" with fundamental type FT_TEMPLATE_ARG and
3545  * bitlength n. This means that deep in processing fundamental types
3546  * I need to ask the question "what template am I in the middle of?".
3547  * The alternative to stuffing a global would be to pass an argument
3548  * down the chain of calls just for this purpose.
3549  *
3550  * There may be problems handling nested templates... tough.
3551  */
3552 static struct type *current_template = NULL;
3553 
3554 /* Read in and internalize a structure definition.
3555  * This same routine is called for struct, union, and class types.
3556  * Also called for templates, since they build a very similar
3557  * type entry as for class types.
3558  */
3559 
3560 static struct type *
hpread_read_struct_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile)3561 hpread_read_struct_type (dnttpointer hp_type, union dnttentry *dn_bufp,
3562 			 struct objfile *objfile)
3563 {
3564   /* The data members get linked together into a list of struct nextfield's */
3565   struct nextfield
3566     {
3567       struct nextfield *next;
3568       struct field field;
3569       unsigned char attributes;	/* store visibility and virtuality info */
3570 #define ATTR_VIRTUAL 1
3571 #define ATTR_PRIVATE 2
3572 #define ATTR_PROTECT 3
3573     };
3574 
3575 
3576   /* The methods get linked together into a list of struct next_fn_field's */
3577   struct next_fn_field
3578     {
3579       struct next_fn_field *next;
3580       struct fn_fieldlist field;
3581       struct fn_field fn_field;
3582       int num_fn_fields;
3583     };
3584 
3585   /* The template args get linked together into a list of struct next_template's */
3586   struct next_template
3587     {
3588       struct next_template *next;
3589       struct template_arg arg;
3590     };
3591 
3592   /* The template instantiations get linked together into a list of these... */
3593   struct next_instantiation
3594     {
3595       struct next_instantiation *next;
3596       struct type *t;
3597     };
3598 
3599   struct type *type;
3600   struct type *baseclass;
3601   struct type *memtype;
3602   struct nextfield *list = 0, *tmp_list = 0;
3603   struct next_fn_field *fn_list = 0;
3604   struct next_fn_field *fn_p;
3605   struct next_template *t_new, *t_list = 0;
3606   struct nextfield *new;
3607   struct next_fn_field *fn_new;
3608   struct next_instantiation *i_new, *i_list = 0;
3609   int n, nfields = 0, n_fn_fields = 0, n_fn_fields_total = 0;
3610   int n_base_classes = 0, n_templ_args = 0;
3611   int ninstantiations = 0;
3612   dnttpointer field, fn_field, parent;
3613   union dnttentry *fieldp, *fn_fieldp, *parentp;
3614   int i;
3615   int static_member = 0;
3616   int const_member = 0;
3617   int volatile_member = 0;
3618   unsigned long vtbl_offset;
3619   int need_bitvectors = 0;
3620   char *method_name = NULL;
3621   char *method_alias = NULL;
3622 
3623 
3624   /* Is it something we've already dealt with?  */
3625   type = hpread_alloc_type (hp_type, objfile);
3626   if ((TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
3627       (TYPE_CODE (type) == TYPE_CODE_UNION) ||
3628       (TYPE_CODE (type) == TYPE_CODE_CLASS) ||
3629       (TYPE_CODE (type) == TYPE_CODE_TEMPLATE))
3630     return type;
3631 
3632   /* Get the basic type correct.  */
3633   if (dn_bufp->dblock.kind == DNTT_TYPE_STRUCT)
3634     {
3635       TYPE_CODE (type) = TYPE_CODE_STRUCT;
3636       TYPE_LENGTH (type) = dn_bufp->dstruct.bitlength / 8;
3637     }
3638   else if (dn_bufp->dblock.kind == DNTT_TYPE_UNION)
3639     {
3640       TYPE_CODE (type) = TYPE_CODE_UNION;
3641       TYPE_LENGTH (type) = dn_bufp->dunion.bitlength / 8;
3642     }
3643   else if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS)
3644     {
3645       TYPE_CODE (type) = TYPE_CODE_CLASS;
3646       TYPE_LENGTH (type) = dn_bufp->dclass.bitlength / 8;
3647 
3648       /* Overrides the TYPE_CPLUS_SPECIFIC(type) with allocated memory
3649        * rather than &cplus_struct_default.
3650        */
3651       allocate_cplus_struct_type (type);
3652 
3653       /* Fill in declared-type.
3654        * (The C++ compiler will emit TYPE_CODE_CLASS
3655        * for all 3 of "class", "struct"
3656        * "union", and we have to look at the "class_decl" field if we
3657        * want to know how it was really declared)
3658        */
3659       /* (0==class, 1==union, 2==struct) */
3660       TYPE_DECLARED_TYPE (type) = dn_bufp->dclass.class_decl;
3661     }
3662   else if (dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
3663     {
3664       /* Get the basic type correct.  */
3665       TYPE_CODE (type) = TYPE_CODE_TEMPLATE;
3666       allocate_cplus_struct_type (type);
3667       TYPE_DECLARED_TYPE (type) = DECLARED_TYPE_TEMPLATE;
3668     }
3669   else
3670     return type;
3671 
3672 
3673   TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3674 
3675   /* For classes, read the parent list.
3676    * Question (RT): Do we need to do this for templates also?
3677    */
3678   if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS)
3679     {
3680 
3681       /* First read the parent-list (classes from which we derive fields) */
3682       parent = dn_bufp->dclass.parentlist;
3683       while (parent.word && parent.word != DNTTNIL)
3684 	{
3685 	  parentp = hpread_get_lntt (parent.dnttp.index, objfile);
3686 
3687 	  /* "parentp" should point to a DNTT_TYPE_INHERITANCE record */
3688 
3689 	  /* Get space to record the next field/data-member. */
3690 	  new = (struct nextfield *) alloca (sizeof (struct nextfield));
3691 	  memset (new, 0, sizeof (struct nextfield));
3692 	  new->next = list;
3693 	  list = new;
3694 
3695 	  FIELD_BITSIZE (list->field) = 0;
3696 	  FIELD_STATIC_KIND (list->field) = 0;
3697 
3698 	  /* The "classname" field is actually a DNTT pointer to the base class */
3699 	  baseclass = hpread_type_lookup (parentp->dinheritance.classname,
3700 					  objfile);
3701 	  FIELD_TYPE (list->field) = baseclass;
3702 
3703 	  list->field.name = type_name_no_tag (FIELD_TYPE (list->field));
3704 
3705 	  list->attributes = 0;
3706 
3707 	  /* Check for virtuality of base, and set the
3708 	   * offset of the base subobject within the object.
3709 	   * (Offset set to -1 for virtual bases (for now).)
3710 	   */
3711 	  if (parentp->dinheritance.Virtual)
3712 	    {
3713 	      B_SET (&(list->attributes), ATTR_VIRTUAL);
3714 	      parentp->dinheritance.offset = -1;
3715 	    }
3716 	  else
3717 	    FIELD_BITPOS (list->field) = parentp->dinheritance.offset;
3718 
3719 	  /* Check visibility */
3720 	  switch (parentp->dinheritance.visibility)
3721 	    {
3722 	    case 1:
3723 	      B_SET (&(list->attributes), ATTR_PROTECT);
3724 	      break;
3725 	    case 2:
3726 	      B_SET (&(list->attributes), ATTR_PRIVATE);
3727 	      break;
3728 	    }
3729 
3730 	  n_base_classes++;
3731 	  nfields++;
3732 
3733 	  parent = parentp->dinheritance.next;
3734 	}
3735     }
3736 
3737   /* For templates, read the template argument list.
3738    * This must be done before processing the member list, because
3739    * the member list may refer back to this. E.g.:
3740    *   template <class T1, class T2> class q2 {
3741    *     public:
3742    *     T1 a;
3743    *     T2 b;
3744    *   };
3745    * We need to read the argument list "T1", "T2" first.
3746    */
3747   if (dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
3748     {
3749       /* Kludge alert: This stuffs a global "current_template" which
3750        * is referred to by hpread_get_nth_templ_arg(). The global
3751        * is cleared at the end of this routine.
3752        */
3753       current_template = type;
3754 
3755       /* Read in the argument list */
3756       field = dn_bufp->dtemplate.arglist;
3757       while (field.word && field.word != DNTTNIL)
3758 	{
3759 	  /* Get this template argument */
3760 	  fieldp = hpread_get_lntt (field.dnttp.index, objfile);
3761 	  if (fieldp->dblock.kind != DNTT_TYPE_TEMPLATE_ARG)
3762 	    {
3763 	      warning ("Invalid debug info: Template argument entry is of wrong kind");
3764 	      break;
3765 	    }
3766 	  /* Bump the count */
3767 	  n_templ_args++;
3768 	  /* Allocate and fill in a struct next_template */
3769 	  t_new = (struct next_template *) alloca (sizeof (struct next_template));
3770 	  memset (t_new, 0, sizeof (struct next_template));
3771 	  t_new->next = t_list;
3772 	  t_list = t_new;
3773 	  t_list->arg.name = VT (objfile) + fieldp->dtempl_arg.name;
3774 	  t_list->arg.type = hpread_read_templ_arg_type (field, fieldp,
3775 						 objfile, t_list->arg.name);
3776 	  /* Walk to the next template argument */
3777 	  field = fieldp->dtempl_arg.nextarg;
3778 	}
3779     }
3780 
3781   TYPE_NTEMPLATE_ARGS (type) = n_templ_args;
3782 
3783   if (n_templ_args > 0)
3784     TYPE_TEMPLATE_ARGS (type) = (struct template_arg *)
3785       obstack_alloc (&objfile->objfile_obstack, sizeof (struct template_arg) * n_templ_args);
3786   for (n = n_templ_args; t_list; t_list = t_list->next)
3787     {
3788       n -= 1;
3789       TYPE_TEMPLATE_ARG (type, n) = t_list->arg;
3790     }
3791 
3792   /* Next read in and internalize all the fields/members.  */
3793   if (dn_bufp->dblock.kind == DNTT_TYPE_STRUCT)
3794     field = dn_bufp->dstruct.firstfield;
3795   else if (dn_bufp->dblock.kind == DNTT_TYPE_UNION)
3796     field = dn_bufp->dunion.firstfield;
3797   else if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS)
3798     field = dn_bufp->dclass.memberlist;
3799   else if (dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
3800     field = dn_bufp->dtemplate.memberlist;
3801   else
3802     field.word = DNTTNIL;
3803 
3804   while (field.word && field.word != DNTTNIL)
3805     {
3806       fieldp = hpread_get_lntt (field.dnttp.index, objfile);
3807 
3808       /* At this point "fieldp" may point to either a DNTT_TYPE_FIELD
3809        * or a DNTT_TYPE_GENFIELD record.
3810        */
3811       vtbl_offset = 0;
3812       static_member = 0;
3813       const_member = 0;
3814       volatile_member = 0;
3815 
3816       if (fieldp->dblock.kind == DNTT_TYPE_GENFIELD)
3817 	{
3818 
3819 	  /* The type will be GENFIELD if the field is a method or
3820 	   * a static member (or some other cases -- see below)
3821 	   */
3822 
3823 	  /* Follow a link to get to the record for the field. */
3824 	  fn_field = fieldp->dgenfield.field;
3825 	  fn_fieldp = hpread_get_lntt (fn_field.dnttp.index, objfile);
3826 
3827 	  /* Virtual funcs are indicated by a VFUNC which points to the
3828 	   * real entry
3829 	   */
3830 	  if (fn_fieldp->dblock.kind == DNTT_TYPE_VFUNC)
3831 	    {
3832 	      vtbl_offset = fn_fieldp->dvfunc.vtbl_offset;
3833 	      fn_field = fn_fieldp->dvfunc.funcptr;
3834 	      fn_fieldp = hpread_get_lntt (fn_field.dnttp.index, objfile);
3835 	    }
3836 
3837 	  /* A function's entry may be preceded by a modifier which
3838 	   * labels it static/constant/volatile.
3839 	   */
3840 	  if (fn_fieldp->dblock.kind == DNTT_TYPE_MODIFIER)
3841 	    {
3842 	      static_member = fn_fieldp->dmodifier.m_static;
3843 	      const_member = fn_fieldp->dmodifier.m_const;
3844 	      volatile_member = fn_fieldp->dmodifier.m_volatile;
3845 	      fn_field = fn_fieldp->dmodifier.type;
3846 	      fn_fieldp = hpread_get_lntt (fn_field.dnttp.index, objfile);
3847 	    }
3848 
3849 	  /* Check whether we have a method */
3850 	  if ((fn_fieldp->dblock.kind == DNTT_TYPE_MEMFUNC) ||
3851 	      (fn_fieldp->dblock.kind == DNTT_TYPE_FUNCTION) ||
3852 	      (fn_fieldp->dblock.kind == DNTT_TYPE_DOC_MEMFUNC) ||
3853 	      (fn_fieldp->dblock.kind == DNTT_TYPE_DOC_FUNCTION))
3854 	    {
3855 	      /* Method found */
3856 
3857 	      short ix = 0;
3858 
3859 	      /* Look up function type of method */
3860 	      memtype = hpread_type_lookup (fn_field, objfile);
3861 
3862 	      /* Methods can be seen before classes in the SOM records.
3863 	         If we are processing this class because it's a parameter of a
3864 	         method, at this point the method's type is actually incomplete;
3865 	         we'll have to fix it up later; mark the class for this. */
3866 
3867 	      if (TYPE_INCOMPLETE (memtype))
3868 		{
3869 		  TYPE_FLAGS (type) |= TYPE_FLAG_INCOMPLETE;
3870 		  if (fixup_class)
3871 		    warning ("Two classes to fix up for method??  Type information may be incorrect for some classes.");
3872 		  if (fixup_method)
3873 		    warning ("Two methods to be fixed up at once?? Type information may be incorrect for some classes.");
3874 		  fixup_class = type;	/* remember this class has to be fixed up */
3875 		  fixup_method = memtype;	/* remember the method type to be used in fixup */
3876 		}
3877 
3878 	      /* HP aCC generates operator names without the "operator" keyword, and
3879 	         generates null strings as names for operators that are
3880 	         user-defined type conversions to basic types (e.g. operator int ()).
3881 	         So try to reconstruct name as best as possible. */
3882 
3883 	      method_name = (char *) (VT (objfile) + fn_fieldp->dfunc.name);
3884 	      method_alias = (char *) (VT (objfile) + fn_fieldp->dfunc.alias);
3885 
3886 	      if (!method_name ||	/* no name */
3887 		  !*method_name ||	/* or null name */
3888 		  cplus_mangle_opname (method_name, DMGL_ANSI))		/* or name is an operator like "<" */
3889 		{
3890 		  char *tmp_name = cplus_demangle (method_alias, DMGL_ANSI);
3891 		  char *op_string = strstr (tmp_name, "operator");
3892 		  method_name = xmalloc (strlen (op_string) + 1);	/* don't overwrite VT! */
3893 		  strcpy (method_name, op_string);
3894 		}
3895 
3896 	      /* First check if a method of the same name has already been seen. */
3897 	      fn_p = fn_list;
3898 	      while (fn_p)
3899 		{
3900 		  if (DEPRECATED_STREQ (fn_p->field.name, method_name))
3901 		    break;
3902 		  fn_p = fn_p->next;
3903 		}
3904 
3905 	      /* If no such method was found, allocate a new entry in the list */
3906 	      if (!fn_p)
3907 		{
3908 		  /* Get space to record this member function */
3909 		  /* Note: alloca used; this will disappear on routine exit */
3910 		  fn_new = (struct next_fn_field *) alloca (sizeof (struct next_fn_field));
3911 		  memset (fn_new, 0, sizeof (struct next_fn_field));
3912 		  fn_new->next = fn_list;
3913 		  fn_list = fn_new;
3914 
3915 		  /* Fill in the fields of the struct nextfield */
3916 
3917 		  /* Record the (unmangled) method name */
3918 		  fn_list->field.name = method_name;
3919 		  /* Initial space for overloaded methods */
3920 		  /* Note: xmalloc is used; this will persist after this routine exits */
3921 		  fn_list->field.fn_fields = (struct fn_field *) xmalloc (5 * (sizeof (struct fn_field)));
3922 		  fn_list->field.length = 1;	/* Init # of overloaded instances */
3923 		  fn_list->num_fn_fields = 5;	/* # of entries for which space allocated */
3924 		  fn_p = fn_list;
3925 		  ix = 0;	/* array index for fn_field */
3926 		  /* Bump the total count of the distinctly named methods */
3927 		  n_fn_fields++;
3928 		}
3929 	      else
3930 		/* Another overloaded instance of an already seen method name */
3931 		{
3932 		  if (++(fn_p->field.length) > fn_p->num_fn_fields)
3933 		    {
3934 		      /* Increase space allocated for overloaded instances */
3935 		      fn_p->field.fn_fields
3936 			= (struct fn_field *) xrealloc (fn_p->field.fn_fields,
3937 		      (fn_p->num_fn_fields + 5) * sizeof (struct fn_field));
3938 		      fn_p->num_fn_fields += 5;
3939 		    }
3940 		  ix = fn_p->field.length - 1;	/* array index for fn_field */
3941 		}
3942 
3943 	      /* "physname" is intended to be the name of this overloaded instance. */
3944 	      if ((fn_fieldp->dfunc.language == HP_LANGUAGE_CPLUSPLUS) &&
3945 		  method_alias &&
3946 		  *method_alias)	/* not a null string */
3947 		fn_p->field.fn_fields[ix].physname = method_alias;
3948 	      else
3949 		fn_p->field.fn_fields[ix].physname = method_name;
3950 	      /* What's expected here is the function type */
3951 	      /* But mark it as NULL if the method was incompletely processed
3952 	         We'll fix this up later when the method is fully processed */
3953 	      if (TYPE_INCOMPLETE (memtype))
3954 		fn_p->field.fn_fields[ix].type = NULL;
3955 	      else
3956 		fn_p->field.fn_fields[ix].type = memtype;
3957 
3958 	      /* For virtual functions, fill in the voffset field with the
3959 	       * virtual table offset. (This is just copied over from the
3960 	       * SOM record; not sure if it is what GDB expects here...).
3961 	       * But if the function is a static method, set it to 1.
3962 	       *
3963 	       * Note that we have to add 1 because 1 indicates a static
3964 	       * method, and 0 indicates a non-static, non-virtual method */
3965 
3966 	      if (static_member)
3967 		fn_p->field.fn_fields[ix].voffset = VOFFSET_STATIC;
3968 	      else
3969 		fn_p->field.fn_fields[ix].voffset = vtbl_offset ? vtbl_offset + 1 : 0;
3970 
3971 	      /* Also fill in the fcontext field with the current
3972 	       * class. (The latter isn't quite right: should be the baseclass
3973 	       * that defines the virtual function... Note we do have
3974 	       * a variable "baseclass" that we could stuff into the fcontext
3975 	       * field, but "baseclass" isn't necessarily right either,
3976 	       * since the virtual function could have been defined more
3977 	       * than one level up).
3978 	       */
3979 
3980 	      if (vtbl_offset != 0)
3981 		fn_p->field.fn_fields[ix].fcontext = type;
3982 	      else
3983 		fn_p->field.fn_fields[ix].fcontext = NULL;
3984 
3985 	      /* Other random fields pertaining to this method */
3986 	      fn_p->field.fn_fields[ix].is_const = const_member;
3987 	      fn_p->field.fn_fields[ix].is_volatile = volatile_member;	/* ?? */
3988 	      switch (fieldp->dgenfield.visibility)
3989 		{
3990 		case 1:
3991 		  fn_p->field.fn_fields[ix].is_protected = 1;
3992 		  fn_p->field.fn_fields[ix].is_private = 0;
3993 		  break;
3994 		case 2:
3995 		  fn_p->field.fn_fields[ix].is_protected = 0;
3996 		  fn_p->field.fn_fields[ix].is_private = 1;
3997 		  break;
3998 		default:	/* public */
3999 		  fn_p->field.fn_fields[ix].is_protected = 0;
4000 		  fn_p->field.fn_fields[ix].is_private = 0;
4001 		}
4002 	      fn_p->field.fn_fields[ix].is_stub = 0;
4003 
4004 	      /* HP aCC emits both MEMFUNC and FUNCTION entries for a method;
4005 	         if the class points to the FUNCTION, there is usually separate
4006 	         code for the method; but if we have a MEMFUNC, the method has
4007 	         been inlined (and there is usually no FUNCTION entry)
4008 	         FIXME Not sure if this test is accurate. pai/1997-08-22 */
4009 	      if ((fn_fieldp->dblock.kind == DNTT_TYPE_MEMFUNC) ||
4010 		  (fn_fieldp->dblock.kind == DNTT_TYPE_DOC_MEMFUNC))
4011 		fn_p->field.fn_fields[ix].is_inlined = 1;
4012 	      else
4013 		fn_p->field.fn_fields[ix].is_inlined = 0;
4014 
4015 	      fn_p->field.fn_fields[ix].dummy = 0;
4016 
4017 	      /* Bump the total count of the member functions */
4018 	      n_fn_fields_total++;
4019 
4020 	    }
4021 	  else if (fn_fieldp->dblock.kind == DNTT_TYPE_SVAR)
4022 	    {
4023 	      /* This case is for static data members of classes */
4024 
4025 	      /* pai:: FIXME -- check that "staticmem" bit is set */
4026 
4027 	      /* Get space to record this static member */
4028 	      new = (struct nextfield *) alloca (sizeof (struct nextfield));
4029 	      memset (new, 0, sizeof (struct nextfield));
4030 	      new->next = list;
4031 	      list = new;
4032 
4033 	      list->field.name = VT (objfile) + fn_fieldp->dsvar.name;
4034 	      SET_FIELD_PHYSNAME (list->field, 0);	/* initialize to empty */
4035 	      memtype = hpread_type_lookup (fn_fieldp->dsvar.type, objfile);
4036 
4037 	      FIELD_TYPE (list->field) = memtype;
4038 	      list->attributes = 0;
4039 	      switch (fieldp->dgenfield.visibility)
4040 		{
4041 		case 1:
4042 		  B_SET (&(list->attributes), ATTR_PROTECT);
4043 		  break;
4044 		case 2:
4045 		  B_SET (&(list->attributes), ATTR_PRIVATE);
4046 		  break;
4047 		}
4048 	      nfields++;
4049 	    }
4050 
4051 	  else if (fn_fieldp->dblock.kind == DNTT_TYPE_FIELD)
4052 	    {
4053 	      /* FIELDs follow GENFIELDs for fields of anonymous unions.
4054 	         Code below is replicated from the case for FIELDs further
4055 	         below, except that fieldp is replaced by fn_fieldp */
4056 	      if (!fn_fieldp->dfield.a_union)
4057 		warning ("Debug info inconsistent: FIELD of anonymous union doesn't have a_union bit set");
4058 	      /* Get space to record the next field/data-member. */
4059 	      new = (struct nextfield *) alloca (sizeof (struct nextfield));
4060 	      memset (new, 0, sizeof (struct nextfield));
4061 	      new->next = list;
4062 	      list = new;
4063 
4064 	      list->field.name = VT (objfile) + fn_fieldp->dfield.name;
4065 	      FIELD_BITPOS (list->field) = fn_fieldp->dfield.bitoffset;
4066 	      if (fn_fieldp->dfield.bitlength % 8)
4067 		list->field.bitsize = fn_fieldp->dfield.bitlength;
4068 	      else
4069 		list->field.bitsize = 0;
4070 
4071 	      memtype = hpread_type_lookup (fn_fieldp->dfield.type, objfile);
4072 	      list->field.type = memtype;
4073 	      list->attributes = 0;
4074 	      switch (fn_fieldp->dfield.visibility)
4075 		{
4076 		case 1:
4077 		  B_SET (&(list->attributes), ATTR_PROTECT);
4078 		  break;
4079 		case 2:
4080 		  B_SET (&(list->attributes), ATTR_PRIVATE);
4081 		  break;
4082 		}
4083 	      nfields++;
4084 	    }
4085 	  else if (fn_fieldp->dblock.kind == DNTT_TYPE_SVAR)
4086 	    {
4087 	      /* Field of anonymous union; union is not inside a class */
4088 	      if (!fn_fieldp->dsvar.a_union)
4089 		warning ("Debug info inconsistent: SVAR field in anonymous union doesn't have a_union bit set");
4090 	      /* Get space to record the next field/data-member. */
4091 	      new = (struct nextfield *) alloca (sizeof (struct nextfield));
4092 	      memset (new, 0, sizeof (struct nextfield));
4093 	      new->next = list;
4094 	      list = new;
4095 
4096 	      list->field.name = VT (objfile) + fn_fieldp->dsvar.name;
4097 	      FIELD_BITPOS (list->field) = 0;	/* FIXME is this always true? */
4098 	      FIELD_BITSIZE (list->field) = 0;	/* use length from type */
4099 	      FIELD_STATIC_KIND (list->field) = 0;
4100 	      memtype = hpread_type_lookup (fn_fieldp->dsvar.type, objfile);
4101 	      list->field.type = memtype;
4102 	      list->attributes = 0;
4103 	      /* No info to set visibility -- always public */
4104 	      nfields++;
4105 	    }
4106 	  else if (fn_fieldp->dblock.kind == DNTT_TYPE_DVAR)
4107 	    {
4108 	      /* Field of anonymous union; union is not inside a class */
4109 	      if (!fn_fieldp->ddvar.a_union)
4110 		warning ("Debug info inconsistent: DVAR field in anonymous union doesn't have a_union bit set");
4111 	      /* Get space to record the next field/data-member. */
4112 	      new = (struct nextfield *) alloca (sizeof (struct nextfield));
4113 	      memset (new, 0, sizeof (struct nextfield));
4114 	      new->next = list;
4115 	      list = new;
4116 
4117 	      list->field.name = VT (objfile) + fn_fieldp->ddvar.name;
4118 	      FIELD_BITPOS (list->field) = 0;	/* FIXME is this always true? */
4119 	      FIELD_BITSIZE (list->field) = 0;	/* use length from type */
4120 	      FIELD_STATIC_KIND (list->field) = 0;
4121 	      memtype = hpread_type_lookup (fn_fieldp->ddvar.type, objfile);
4122 	      list->field.type = memtype;
4123 	      list->attributes = 0;
4124 	      /* No info to set visibility -- always public */
4125 	      nfields++;
4126 	    }
4127 	  else
4128 	    {			/* Not a method, nor a static data member, nor an anon union field */
4129 
4130 	      /* This case is for miscellaneous type entries (local enums,
4131 	         local function templates, etc.) that can be present
4132 	         inside a class. */
4133 
4134 	      /* Enums -- will be handled by other code that takes care
4135 	         of DNTT_TYPE_ENUM; here we see only DNTT_TYPE_MEMENUM so
4136 	         it's not clear we could have handled them here at all. */
4137 	      /* FUNC_TEMPLATE: is handled by other code (?). */
4138 	      /* MEMACCESS: modified access for inherited member. Not
4139 	         sure what to do with this, ignoriing it at present. */
4140 
4141 	      /* What other entries can appear following a GENFIELD which
4142 	         we do not handle above?  (MODIFIER, VFUNC handled above.) */
4143 
4144 	      if ((fn_fieldp->dblock.kind != DNTT_TYPE_MEMACCESS) &&
4145 		  (fn_fieldp->dblock.kind != DNTT_TYPE_MEMENUM) &&
4146 		  (fn_fieldp->dblock.kind != DNTT_TYPE_FUNC_TEMPLATE))
4147 		warning ("Internal error: Unexpected debug record kind %d found following DNTT_GENFIELD",
4148 			 fn_fieldp->dblock.kind);
4149 	    }
4150 	  /* walk to the next FIELD or GENFIELD */
4151 	  field = fieldp->dgenfield.nextfield;
4152 
4153 	}
4154       else if (fieldp->dblock.kind == DNTT_TYPE_FIELD)
4155 	{
4156 
4157 	  /* Ordinary structure/union/class field */
4158 	  struct type *anon_union_type;
4159 
4160 	  /* Get space to record the next field/data-member. */
4161 	  new = (struct nextfield *) alloca (sizeof (struct nextfield));
4162 	  memset (new, 0, sizeof (struct nextfield));
4163 	  new->next = list;
4164 	  list = new;
4165 
4166 	  list->field.name = VT (objfile) + fieldp->dfield.name;
4167 
4168 
4169 	  /* A FIELD by itself (without a GENFIELD) can also be a static
4170 	     member.  Mark it as static with a physname of NULL.
4171 	     fix_static_member_physnames will assign the physname later. */
4172 	  if (fieldp->dfield.staticmem)
4173 	    {
4174 	      SET_FIELD_PHYSNAME (list->field, NULL);
4175 	      FIELD_BITPOS (list->field) = 0;
4176 	      FIELD_BITSIZE (list->field) = 0;
4177 	    }
4178 	  else
4179 	    /* Non-static data member */
4180 	    {
4181 	      FIELD_STATIC_KIND (list->field) = 0;
4182 	      FIELD_BITPOS (list->field) = fieldp->dfield.bitoffset;
4183 	      if (fieldp->dfield.bitlength % 8)
4184 		FIELD_BITSIZE (list->field) = fieldp->dfield.bitlength;
4185 	      else
4186 		FIELD_BITSIZE (list->field) = 0;
4187 	    }
4188 
4189 	  memtype = hpread_type_lookup (fieldp->dfield.type, objfile);
4190 	  FIELD_TYPE (list->field) = memtype;
4191 	  list->attributes = 0;
4192 	  switch (fieldp->dfield.visibility)
4193 	    {
4194 	    case 1:
4195 	      B_SET (&(list->attributes), ATTR_PROTECT);
4196 	      break;
4197 	    case 2:
4198 	      B_SET (&(list->attributes), ATTR_PRIVATE);
4199 	      break;
4200 	    }
4201 	  nfields++;
4202 
4203 
4204 	  /* Note 1: First, we have to check if the current field is an anonymous
4205 	     union. If it is, then *its* fields are threaded along in the
4206 	     nextfield chain. :-( This was supposed to help debuggers, but is
4207 	     really just a nuisance since we deal with anonymous unions anyway by
4208 	     checking that the name is null.  So anyway, we skip over the fields
4209 	     of the anonymous union. pai/1997-08-22 */
4210 	  /* Note 2: In addition, the bitoffsets for the fields of the anon union
4211 	     are relative to the enclosing struct, *NOT* relative to the anon
4212 	     union!  This is an even bigger nuisance -- we have to go in and munge
4213 	     the anon union's type information appropriately. pai/1997-08-22 */
4214 
4215 	  /* Both tasks noted above are done by a separate function.  This takes us
4216 	     to the next FIELD or GENFIELD, skipping anon unions, and recursively
4217 	     processing intermediate types. */
4218 	  field = hpread_get_next_skip_over_anon_unions (1, field, &fieldp, objfile);
4219 
4220 	}
4221       else
4222 	{
4223 	  /* neither field nor genfield ?? is this possible?? */
4224 	  /* pai:: FIXME walk to the next -- how? */
4225 	  warning ("Internal error: unexpected DNTT kind %d encountered as field of struct",
4226 		   fieldp->dblock.kind);
4227 	  warning ("Skipping remaining fields of struct");
4228 	  break;		/* get out of loop of fields */
4229 	}
4230     }
4231 
4232   /* If it's a template, read in the instantiation list */
4233   if (dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
4234     {
4235       ninstantiations = 0;
4236       field = dn_bufp->dtemplate.expansions;
4237       while (field.word && field.word != DNTTNIL)
4238 	{
4239 	  fieldp = hpread_get_lntt (field.dnttp.index, objfile);
4240 
4241 	  /* The expansions or nextexp should point to a tagdef */
4242 	  if (fieldp->dblock.kind != DNTT_TYPE_TAGDEF)
4243 	    break;
4244 
4245 	  i_new = (struct next_instantiation *) alloca (sizeof (struct next_instantiation));
4246 	  memset (i_new, 0, sizeof (struct next_instantiation));
4247 	  i_new->next = i_list;
4248 	  i_list = i_new;
4249 	  i_list->t = hpread_type_lookup (field, objfile);
4250 	  ninstantiations++;
4251 
4252 	  /* And the "type" field of that should point to a class */
4253 	  field = fieldp->dtag.type;
4254 	  fieldp = hpread_get_lntt (field.dnttp.index, objfile);
4255 	  if (fieldp->dblock.kind != DNTT_TYPE_CLASS)
4256 	    break;
4257 
4258 	  /* Get the next expansion */
4259 	  field = fieldp->dclass.nextexp;
4260 	}
4261     }
4262   TYPE_NINSTANTIATIONS (type) = ninstantiations;
4263   if (ninstantiations > 0)
4264     TYPE_INSTANTIATIONS (type) = (struct type **)
4265       obstack_alloc (&objfile->objfile_obstack, sizeof (struct type *) * ninstantiations);
4266   for (n = ninstantiations; i_list; i_list = i_list->next)
4267     {
4268       n -= 1;
4269       TYPE_INSTANTIATION (type, n) = i_list->t;
4270     }
4271 
4272 
4273   /* Copy the field-list to GDB's symbol table */
4274   TYPE_NFIELDS (type) = nfields;
4275   TYPE_N_BASECLASSES (type) = n_base_classes;
4276   TYPE_FIELDS (type) = (struct field *)
4277     obstack_alloc (&objfile->objfile_obstack, sizeof (struct field) * nfields);
4278   /* Copy the saved-up fields into the field vector.  */
4279   for (n = nfields, tmp_list = list; tmp_list; tmp_list = tmp_list->next)
4280     {
4281       n -= 1;
4282       TYPE_FIELD (type, n) = tmp_list->field;
4283     }
4284 
4285   /* Copy the "function-field-list" (i.e., the list of member
4286    * functions in the class) to GDB's symbol table
4287    */
4288   TYPE_NFN_FIELDS (type) = n_fn_fields;
4289   TYPE_NFN_FIELDS_TOTAL (type) = n_fn_fields_total;
4290   TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
4291     obstack_alloc (&objfile->objfile_obstack, sizeof (struct fn_fieldlist) * n_fn_fields);
4292   for (n = n_fn_fields; fn_list; fn_list = fn_list->next)
4293     {
4294       n -= 1;
4295       TYPE_FN_FIELDLIST (type, n) = fn_list->field;
4296     }
4297 
4298   /* pai:: FIXME -- perhaps each bitvector should be created individually */
4299   for (n = nfields, tmp_list = list; tmp_list; tmp_list = tmp_list->next)
4300     {
4301       n -= 1;
4302       if (tmp_list->attributes)
4303 	{
4304 	  need_bitvectors = 1;
4305 	  break;
4306 	}
4307     }
4308 
4309   if (need_bitvectors)
4310     {
4311       /* pai:: this step probably redundant */
4312       ALLOCATE_CPLUS_STRUCT_TYPE (type);
4313 
4314       TYPE_FIELD_VIRTUAL_BITS (type) =
4315 	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4316       B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), nfields);
4317 
4318       TYPE_FIELD_PRIVATE_BITS (type) =
4319 	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4320       B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
4321 
4322       TYPE_FIELD_PROTECTED_BITS (type) =
4323 	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4324       B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
4325 
4326       /* this field vector isn't actually used with HP aCC */
4327       TYPE_FIELD_IGNORE_BITS (type) =
4328 	(B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4329       B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
4330 
4331       while (nfields-- > 0)
4332 	{
4333 	  if (B_TST (&(list->attributes), ATTR_VIRTUAL))
4334 	    SET_TYPE_FIELD_VIRTUAL (type, nfields);
4335 	  if (B_TST (&(list->attributes), ATTR_PRIVATE))
4336 	    SET_TYPE_FIELD_PRIVATE (type, nfields);
4337 	  if (B_TST (&(list->attributes), ATTR_PROTECT))
4338 	    SET_TYPE_FIELD_PROTECTED (type, nfields);
4339 
4340 	  list = list->next;
4341 	}
4342     }
4343   else
4344     {
4345       TYPE_FIELD_VIRTUAL_BITS (type) = NULL;
4346       TYPE_FIELD_PROTECTED_BITS (type) = NULL;
4347       TYPE_FIELD_PRIVATE_BITS (type) = NULL;
4348     }
4349 
4350   if (has_vtable (type))
4351     {
4352       /* Allocate space for class runtime information */
4353       TYPE_RUNTIME_PTR (type) = (struct runtime_info *) xmalloc (sizeof (struct runtime_info));
4354       /* Set flag for vtable */
4355       TYPE_VTABLE (type) = 1;
4356       /* The first non-virtual base class with a vtable. */
4357       TYPE_PRIMARY_BASE (type) = primary_base_class (type);
4358       /* The virtual base list. */
4359       TYPE_VIRTUAL_BASE_LIST (type) = virtual_base_list (type);
4360     }
4361   else
4362     TYPE_RUNTIME_PTR (type) = NULL;
4363 
4364   /* If this is a local type (C++ - declared inside a function), record file name & line # */
4365   if (hpread_get_scope_depth (dn_bufp, objfile, 1 /* no need for real depth */ ))
4366     {
4367       TYPE_LOCALTYPE_PTR (type) = (struct local_type_info *) xmalloc (sizeof (struct local_type_info));
4368       TYPE_LOCALTYPE_FILE (type) = (char *) xmalloc (strlen (current_subfile->name) + 1);
4369       strcpy (TYPE_LOCALTYPE_FILE (type), current_subfile->name);
4370       if (current_subfile->line_vector && (current_subfile->line_vector->nitems > 0))
4371 	TYPE_LOCALTYPE_LINE (type) = current_subfile->line_vector->item[current_subfile->line_vector->nitems - 1].line;
4372       else
4373 	TYPE_LOCALTYPE_LINE (type) = 0;
4374     }
4375   else
4376     TYPE_LOCALTYPE_PTR (type) = NULL;
4377 
4378   /* Clear the global saying what template we are in the middle of processing */
4379   current_template = NULL;
4380 
4381   return type;
4382 }
4383 
4384 /* Adjust the physnames for each static member of a struct
4385    or class type to be something like "A::x"; then various
4386    other pieces of code that do a lookup_symbol on the phyname
4387    work correctly.
4388    TYPE is a pointer to the struct/class type
4389    NAME is a char * (string) which is the class/struct name
4390    Void return */
4391 
4392 static void
fix_static_member_physnames(struct type * type,char * class_name,struct objfile * objfile)4393 fix_static_member_physnames (struct type *type, char *class_name,
4394 			     struct objfile *objfile)
4395 {
4396   int i;
4397 
4398   /* We fix the member names only for classes or structs */
4399   if (TYPE_CODE (type) != TYPE_CODE_STRUCT)
4400     return;
4401 
4402   for (i = 0; i < TYPE_NFIELDS (type); i++)
4403     if (TYPE_FIELD_STATIC (type, i))
4404       {
4405 	if (TYPE_FIELD_STATIC_PHYSNAME (type, i))
4406 	  return;		/* physnames are already set */
4407 
4408 	SET_FIELD_PHYSNAME (TYPE_FIELDS (type)[i],
4409 			    obstack_alloc (&objfile->objfile_obstack,
4410 	     strlen (class_name) + strlen (TYPE_FIELD_NAME (type, i)) + 3));
4411 	strcpy (TYPE_FIELD_STATIC_PHYSNAME (type, i), class_name);
4412 	strcat (TYPE_FIELD_STATIC_PHYSNAME (type, i), "::");
4413 	strcat (TYPE_FIELD_STATIC_PHYSNAME (type, i), TYPE_FIELD_NAME (type, i));
4414       }
4415 }
4416 
4417 /* Fix-up the type structure for a CLASS so that the type entry
4418  * for a method (previously marked with a null type in hpread_read_struct_type()
4419  * is set correctly to METHOD.
4420  * OBJFILE is as for other such functions.
4421  * Void return. */
4422 
4423 static void
fixup_class_method_type(struct type * class,struct type * method,struct objfile * objfile)4424 fixup_class_method_type (struct type *class, struct type *method,
4425 			 struct objfile *objfile)
4426 {
4427   int i, j, k;
4428 
4429   if (!class || !method || !objfile)
4430     return;
4431 
4432   /* Only for types that have methods */
4433   if ((TYPE_CODE (class) != TYPE_CODE_CLASS) &&
4434       (TYPE_CODE (class) != TYPE_CODE_UNION))
4435     return;
4436 
4437   /* Loop over all methods and find the one marked with a NULL type */
4438   for (i = 0; i < TYPE_NFN_FIELDS (class); i++)
4439     for (j = 0; j < TYPE_FN_FIELDLIST_LENGTH (class, i); j++)
4440       if (TYPE_FN_FIELD_TYPE (TYPE_FN_FIELDLIST1 (class, i), j) == NULL)
4441 	{
4442 	  /* Set the method type */
4443 	  TYPE_FN_FIELD_TYPE (TYPE_FN_FIELDLIST1 (class, i), j) = method;
4444 
4445 	  /* Break out of both loops -- only one method to fix up in a class */
4446 	  goto finish;
4447 	}
4448 
4449 finish:
4450   TYPE_FLAGS (class) &= ~TYPE_FLAG_INCOMPLETE;
4451 }
4452 
4453 
4454 /* If we're in the middle of processing a template, get a pointer
4455  * to the Nth template argument.
4456  * An example may make this clearer:
4457  *   template <class T1, class T2> class q2 {
4458  *     public:
4459  *     T1 a;
4460  *     T2 b;
4461  *   };
4462  * The type for "a" will be "first template arg" and
4463  * the type for "b" will be "second template arg".
4464  * We need to look these up in order to fill in "a" and "b"'s type.
4465  * This is called from hpread_type_lookup().
4466  */
4467 static struct type *
hpread_get_nth_template_arg(struct objfile * objfile,int n)4468 hpread_get_nth_template_arg (struct objfile *objfile, int n)
4469 {
4470   if (current_template != NULL)
4471     return TYPE_TEMPLATE_ARG (current_template, n).type;
4472   else
4473     return lookup_fundamental_type (objfile, FT_TEMPLATE_ARG);
4474 }
4475 
4476 /* Read in and internalize a TEMPL_ARG (template arg) symbol.  */
4477 
4478 static struct type *
hpread_read_templ_arg_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile,char * name)4479 hpread_read_templ_arg_type (dnttpointer hp_type, union dnttentry *dn_bufp,
4480 			    struct objfile *objfile, char *name)
4481 {
4482   struct type *type;
4483 
4484   /* See if it's something we've already deal with.  */
4485   type = hpread_alloc_type (hp_type, objfile);
4486   if (TYPE_CODE (type) == TYPE_CODE_TEMPLATE_ARG)
4487     return type;
4488 
4489   /* Nope.  Fill in the appropriate fields.  */
4490   TYPE_CODE (type) = TYPE_CODE_TEMPLATE_ARG;
4491   TYPE_LENGTH (type) = 0;
4492   TYPE_NFIELDS (type) = 0;
4493   TYPE_NAME (type) = name;
4494   return type;
4495 }
4496 
4497 /* Read in and internalize a set debug symbol.  */
4498 
4499 static struct type *
hpread_read_set_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile)4500 hpread_read_set_type (dnttpointer hp_type, union dnttentry *dn_bufp,
4501 		      struct objfile *objfile)
4502 {
4503   struct type *type;
4504 
4505   /* See if it's something we've already deal with.  */
4506   type = hpread_alloc_type (hp_type, objfile);
4507   if (TYPE_CODE (type) == TYPE_CODE_SET)
4508     return type;
4509 
4510   /* Nope.  Fill in the appropriate fields.  */
4511   TYPE_CODE (type) = TYPE_CODE_SET;
4512   TYPE_LENGTH (type) = dn_bufp->dset.bitlength / 8;
4513   TYPE_NFIELDS (type) = 0;
4514   TYPE_TARGET_TYPE (type) = hpread_type_lookup (dn_bufp->dset.subtype,
4515 						objfile);
4516   return type;
4517 }
4518 
4519 /* Read in and internalize an array debug symbol.  */
4520 
4521 static struct type *
hpread_read_array_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile)4522 hpread_read_array_type (dnttpointer hp_type, union dnttentry *dn_bufp,
4523 			struct objfile *objfile)
4524 {
4525   struct type *type;
4526 
4527   /* Allocate an array type symbol.
4528    * Why no check for already-read here, like in the other
4529    * hpread_read_xxx_type routines?  Because it kept us
4530    * from properly determining the size of the array!
4531    */
4532   type = hpread_alloc_type (hp_type, objfile);
4533 
4534   TYPE_CODE (type) = TYPE_CODE_ARRAY;
4535 
4536   /* Although the hp-symtab.h does not *require* this to be the case,
4537    * GDB is assuming that "arrayisbytes" and "elemisbytes" be consistent.
4538    * I.e., express both array-length and element-length in bits,
4539    * or express both array-length and element-length in bytes.
4540    */
4541   if (!((dn_bufp->darray.arrayisbytes && dn_bufp->darray.elemisbytes) ||
4542 	(!dn_bufp->darray.arrayisbytes && !dn_bufp->darray.elemisbytes)))
4543     {
4544       warning ("error in hpread_array_type.\n");
4545       return NULL;
4546     }
4547   else if (dn_bufp->darray.arraylength == 0x7fffffff)
4548     {
4549       /* The HP debug format represents char foo[]; as an array with
4550        * length 0x7fffffff.  Internally GDB wants to represent this
4551        *  as an array of length zero.
4552        */
4553       TYPE_LENGTH (type) = 0;
4554     }
4555   else if (dn_bufp->darray.arrayisbytes)
4556     TYPE_LENGTH (type) = dn_bufp->darray.arraylength;
4557   else				/* arraylength is in bits */
4558     TYPE_LENGTH (type) = dn_bufp->darray.arraylength / 8;
4559 
4560   TYPE_TARGET_TYPE (type) = hpread_type_lookup (dn_bufp->darray.elemtype,
4561 						objfile);
4562 
4563   /* The one "field" is used to store the subscript type */
4564   /* Since C and C++ multi-dimensional arrays are simply represented
4565    * as: array of array of ..., we only need one subscript-type
4566    * per array. This subscript type is typically a subrange of integer.
4567    * If this gets extended to support languages like Pascal, then
4568    * we need to fix this to represent multi-dimensional arrays properly.
4569    */
4570   TYPE_NFIELDS (type) = 1;
4571   TYPE_FIELDS (type) = (struct field *)
4572     obstack_alloc (&objfile->objfile_obstack, sizeof (struct field));
4573   TYPE_FIELD_TYPE (type, 0) = hpread_type_lookup (dn_bufp->darray.indextype,
4574 						  objfile);
4575   return type;
4576 }
4577 
4578 /* Read in and internalize a subrange debug symbol.  */
4579 static struct type *
hpread_read_subrange_type(dnttpointer hp_type,union dnttentry * dn_bufp,struct objfile * objfile)4580 hpread_read_subrange_type (dnttpointer hp_type, union dnttentry *dn_bufp,
4581 			   struct objfile *objfile)
4582 {
4583   struct type *type;
4584 
4585   /* Is it something we've already dealt with.  */
4586   type = hpread_alloc_type (hp_type, objfile);
4587   if (TYPE_CODE (type) == TYPE_CODE_RANGE)
4588     return type;
4589 
4590   /* Nope, internalize it.  */
4591   TYPE_CODE (type) = TYPE_CODE_RANGE;
4592   TYPE_LENGTH (type) = dn_bufp->dsubr.bitlength / 8;
4593   TYPE_NFIELDS (type) = 2;
4594   TYPE_FIELDS (type)
4595     = (struct field *) obstack_alloc (&objfile->objfile_obstack,
4596 				      2 * sizeof (struct field));
4597 
4598   if (dn_bufp->dsubr.dyn_low)
4599     TYPE_FIELD_BITPOS (type, 0) = 0;
4600   else
4601     TYPE_FIELD_BITPOS (type, 0) = dn_bufp->dsubr.lowbound;
4602 
4603   if (dn_bufp->dsubr.dyn_high)
4604     TYPE_FIELD_BITPOS (type, 1) = -1;
4605   else
4606     TYPE_FIELD_BITPOS (type, 1) = dn_bufp->dsubr.highbound;
4607   TYPE_TARGET_TYPE (type) = hpread_type_lookup (dn_bufp->dsubr.subtype,
4608 						objfile);
4609   return type;
4610 }
4611 
4612 /* struct type * hpread_type_lookup(hp_type, objfile)
4613  *   Arguments:
4614  *     hp_type: A pointer into the DNTT specifying what type we
4615  *              are about to "look up"., or else [for fundamental types
4616  *              like int, float, ...] an "immediate" structure describing
4617  *              the type.
4618  *     objfile: ?
4619  *   Return value: A pointer to a "struct type" (representation of a
4620  *                 type in GDB's internal symbol table - see gdbtypes.h)
4621  *   Routine description:
4622  *     There are a variety of places when scanning the DNTT when we
4623  *     need to interpret a "type" field. The simplest and most basic
4624  *     example is when we're processing the symbol table record
4625  *     for a data symbol (a SVAR or DVAR record). That has
4626  *     a "type" field specifying the type of the data symbol. That
4627  *     "type" field is either an "immediate" type specification (for the
4628  *     fundamental types) or a DNTT pointer (for more complicated types).
4629  *     For the more complicated types, we may or may not have already
4630  *     processed the pointed-to type. (Multiple data symbols can of course
4631  *     share the same type).
4632  *     The job of hpread_type_lookup() is to process this "type" field.
4633  *     Most of the real work is done in subroutines. Here we interpret
4634  *     the immediate flag. If not immediate, chase the DNTT pointer to
4635  *     find our way to the SOM record describing the type, switch on
4636  *     the SOM kind, and then call an appropriate subroutine depending
4637  *     on what kind of type we are constructing. (e.g., an array type,
4638  *     a struct/class type, etc).
4639  */
4640 static struct type *
hpread_type_lookup(dnttpointer hp_type,struct objfile * objfile)4641 hpread_type_lookup (dnttpointer hp_type, struct objfile *objfile)
4642 {
4643   union dnttentry *dn_bufp;
4644   struct type *tmp_type;
4645 
4646   /* First see if it's a simple builtin type.  */
4647   if (hp_type.dntti.immediate)
4648     {
4649       /* If this is a template argument, the argument number is
4650        * encoded in the bitlength. All other cases, just return
4651        * GDB's representation of this fundamental type.
4652        */
4653       if (hp_type.dntti.type == HP_TYPE_TEMPLATE_ARG)
4654 	return hpread_get_nth_template_arg (objfile, hp_type.dntti.bitlength);
4655       else
4656 	return lookup_fundamental_type (objfile,
4657 					hpread_type_translate (hp_type));
4658     }
4659 
4660   /* Not a builtin type.  We'll have to read it in.  */
4661   if (hp_type.dnttp.index < LNTT_SYMCOUNT (objfile))
4662     dn_bufp = hpread_get_lntt (hp_type.dnttp.index, objfile);
4663   else
4664     /* This is a fancy way of returning NULL */
4665     return lookup_fundamental_type (objfile, FT_VOID);
4666 
4667   switch (dn_bufp->dblock.kind)
4668     {
4669     case DNTT_TYPE_SRCFILE:
4670     case DNTT_TYPE_MODULE:
4671     case DNTT_TYPE_ENTRY:
4672     case DNTT_TYPE_BEGIN:
4673     case DNTT_TYPE_END:
4674     case DNTT_TYPE_IMPORT:
4675     case DNTT_TYPE_LABEL:
4676     case DNTT_TYPE_FPARAM:
4677     case DNTT_TYPE_SVAR:
4678     case DNTT_TYPE_DVAR:
4679     case DNTT_TYPE_CONST:
4680     case DNTT_TYPE_MEMENUM:
4681     case DNTT_TYPE_VARIANT:
4682     case DNTT_TYPE_FILE:
4683     case DNTT_TYPE_WITH:
4684     case DNTT_TYPE_COMMON:
4685     case DNTT_TYPE_COBSTRUCT:
4686     case DNTT_TYPE_XREF:
4687     case DNTT_TYPE_SA:
4688     case DNTT_TYPE_MACRO:
4689     case DNTT_TYPE_BLOCKDATA:
4690     case DNTT_TYPE_CLASS_SCOPE:
4691     case DNTT_TYPE_MEMACCESS:
4692     case DNTT_TYPE_INHERITANCE:
4693     case DNTT_TYPE_OBJECT_ID:
4694     case DNTT_TYPE_FRIEND_CLASS:
4695     case DNTT_TYPE_FRIEND_FUNC:
4696       /* These are not types - something went wrong.  */
4697       /* This is a fancy way of returning NULL */
4698       return lookup_fundamental_type (objfile, FT_VOID);
4699 
4700     case DNTT_TYPE_FUNCTION:
4701       /* We wind up here when dealing with class member functions
4702        * (called from hpread_read_struct_type(), i.e. when processing
4703        * the class definition itself).
4704        */
4705       return hpread_read_function_type (hp_type, dn_bufp, objfile, 0);
4706 
4707     case DNTT_TYPE_DOC_FUNCTION:
4708       return hpread_read_doc_function_type (hp_type, dn_bufp, objfile, 0);
4709 
4710     case DNTT_TYPE_TYPEDEF:
4711       {
4712 	/* A typedef - chase it down by making a recursive call */
4713 	struct type *structtype = hpread_type_lookup (dn_bufp->dtype.type,
4714 						      objfile);
4715 
4716 	/* The following came from the base hpread.c that we inherited.
4717 	 * It is WRONG so I have commented it out. - RT
4718 	 *...
4719 
4720 	 char *suffix;
4721 	 suffix = VT (objfile) + dn_bufp->dtype.name;
4722 	 TYPE_NAME (structtype) = suffix;
4723 
4724 	 * ... further explanation ....
4725 	 *
4726 	 * What we have here is a typedef pointing to a typedef.
4727 	 * E.g.,
4728 	 * typedef int foo;
4729 	 * typedef foo fum;
4730 	 *
4731 	 * What we desire to build is (these are pictures
4732 	 * of "struct type"'s):
4733 	 *
4734 	 *  +---------+     +----------+     +------------+
4735 	 *  | typedef |     | typedef  |     | fund. type |
4736 	 *  |     type| ->  |      type| ->  |            |
4737 	 *  | "fum"   |     | "foo"    |     | "int"      |
4738 	 *  +---------+     +----------+     +------------+
4739 	 *
4740 	 * What this commented-out code is doing is smashing the
4741 	 * name of pointed-to-type to be the same as the pointed-from
4742 	 * type. So we wind up with something like:
4743 	 *
4744 	 *  +---------+     +----------+     +------------+
4745 	 *  | typedef |     | typedef  |     | fund. type |
4746 	 *  |     type| ->  |      type| ->  |            |
4747 	 *  | "fum"   |     | "fum"    |     | "fum"      |
4748 	 *  +---------+     +----------+     +------------+
4749 	 *
4750 	 */
4751 
4752 	return structtype;
4753       }
4754 
4755     case DNTT_TYPE_TAGDEF:
4756       {
4757 	/* Just a little different from above.  We have to tack on
4758 	 * an identifier of some kind (struct, union, enum, class, etc).
4759 	 */
4760 	struct type *structtype = hpread_type_lookup (dn_bufp->dtype.type,
4761 						      objfile);
4762 	char *prefix, *suffix;
4763 	suffix = VT (objfile) + dn_bufp->dtype.name;
4764 
4765 	/* Lookup the next type in the list.  It should be a structure,
4766 	 * union, class, enum, or template type.
4767 	 * We will need to attach that to our name.
4768 	 */
4769 	if (dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile))
4770 	  dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile);
4771 	else
4772 	  {
4773 	    complaint (&symfile_complaints, "error in hpread_type_lookup().");
4774 	    return NULL;
4775 	  }
4776 
4777 	if (dn_bufp->dblock.kind == DNTT_TYPE_STRUCT)
4778 	  {
4779 	    prefix = "struct ";
4780 	  }
4781 	else if (dn_bufp->dblock.kind == DNTT_TYPE_UNION)
4782 	  {
4783 	    prefix = "union ";
4784 	  }
4785 	else if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS)
4786 	  {
4787 	    /* Further field for CLASS saying how it was really declared */
4788 	    /* 0==class, 1==union, 2==struct */
4789 	    if (dn_bufp->dclass.class_decl == 0)
4790 	      prefix = "class ";
4791 	    else if (dn_bufp->dclass.class_decl == 1)
4792 	      prefix = "union ";
4793 	    else if (dn_bufp->dclass.class_decl == 2)
4794 	      prefix = "struct ";
4795 	    else
4796 	      prefix = "";
4797 	  }
4798 	else if (dn_bufp->dblock.kind == DNTT_TYPE_ENUM)
4799 	  {
4800 	    prefix = "enum ";
4801 	  }
4802 	else if (dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
4803 	  {
4804 	    prefix = "template ";
4805 	  }
4806 	else
4807 	  {
4808 	    prefix = "";
4809 	  }
4810 
4811 	/* Build the correct name.  */
4812 	TYPE_NAME (structtype)
4813 	  = (char *) obstack_alloc (&objfile->objfile_obstack,
4814 				    strlen (prefix) + strlen (suffix) + 1);
4815 	TYPE_NAME (structtype) = strcpy (TYPE_NAME (structtype), prefix);
4816 	TYPE_NAME (structtype) = strcat (TYPE_NAME (structtype), suffix);
4817 	TYPE_TAG_NAME (structtype) = suffix;
4818 
4819 	/* For classes/structs, we have to set the static member "physnames"
4820 	   to point to strings like "Class::Member" */
4821 	if (TYPE_CODE (structtype) == TYPE_CODE_STRUCT)
4822 	  fix_static_member_physnames (structtype, suffix, objfile);
4823 
4824 	return structtype;
4825       }
4826 
4827     case DNTT_TYPE_POINTER:
4828       /* Pointer type - call a routine in gdbtypes.c that constructs
4829        * the appropriate GDB type.
4830        */
4831       return make_pointer_type (
4832 				 hpread_type_lookup (dn_bufp->dptr.pointsto,
4833 						     objfile),
4834 				 NULL);
4835 
4836     case DNTT_TYPE_REFERENCE:
4837       /* C++ reference type - call a routine in gdbtypes.c that constructs
4838        * the appropriate GDB type.
4839        */
4840       return make_reference_type (
4841 			   hpread_type_lookup (dn_bufp->dreference.pointsto,
4842 					       objfile),
4843 				   NULL);
4844 
4845     case DNTT_TYPE_ENUM:
4846       return hpread_read_enum_type (hp_type, dn_bufp, objfile);
4847     case DNTT_TYPE_SET:
4848       return hpread_read_set_type (hp_type, dn_bufp, objfile);
4849     case DNTT_TYPE_SUBRANGE:
4850       return hpread_read_subrange_type (hp_type, dn_bufp, objfile);
4851     case DNTT_TYPE_ARRAY:
4852       return hpread_read_array_type (hp_type, dn_bufp, objfile);
4853     case DNTT_TYPE_STRUCT:
4854     case DNTT_TYPE_UNION:
4855       return hpread_read_struct_type (hp_type, dn_bufp, objfile);
4856     case DNTT_TYPE_FIELD:
4857       return hpread_type_lookup (dn_bufp->dfield.type, objfile);
4858 
4859     case DNTT_TYPE_FUNCTYPE:
4860       /* Here we want to read the function SOMs and return a
4861        * type for it. We get here, for instance, when processing
4862        * pointer-to-function type.
4863        */
4864       return hpread_read_function_type (hp_type, dn_bufp, objfile, 0);
4865 
4866     case DNTT_TYPE_PTRMEM:
4867       /* Declares a C++ pointer-to-data-member type.
4868        * The "pointsto" field defines the class,
4869        * while the "memtype" field defines the pointed-to-type.
4870        */
4871       {
4872 	struct type *ptrmemtype;
4873 	struct type *class_type;
4874 	struct type *memtype;
4875 	memtype = hpread_type_lookup (dn_bufp->dptrmem.memtype,
4876 				      objfile),
4877 	  class_type = hpread_type_lookup (dn_bufp->dptrmem.pointsto,
4878 					   objfile),
4879 	  ptrmemtype = alloc_type (objfile);
4880 	smash_to_member_type (ptrmemtype, class_type, memtype);
4881 	return make_pointer_type (ptrmemtype, NULL);
4882       }
4883       break;
4884 
4885     case DNTT_TYPE_PTRMEMFUNC:
4886       /* Defines a C++ pointer-to-function-member type.
4887        * The "pointsto" field defines the class,
4888        * while the "memtype" field defines the pointed-to-type.
4889        */
4890       {
4891 	struct type *ptrmemtype;
4892 	struct type *class_type;
4893 	struct type *functype;
4894 	struct type *retvaltype;
4895 	int nargs;
4896 	int i;
4897 	class_type = hpread_type_lookup (dn_bufp->dptrmem.pointsto,
4898 					 objfile);
4899 	functype = hpread_type_lookup (dn_bufp->dptrmem.memtype,
4900 				       objfile);
4901 	retvaltype = TYPE_TARGET_TYPE (functype);
4902 	nargs = TYPE_NFIELDS (functype);
4903 	ptrmemtype = alloc_type (objfile);
4904 
4905 	smash_to_method_type (ptrmemtype, class_type, retvaltype,
4906 			      TYPE_FIELDS (functype),
4907 			      TYPE_NFIELDS (functype),
4908 			      0);
4909 	return make_pointer_type (ptrmemtype, NULL);
4910       }
4911       break;
4912 
4913     case DNTT_TYPE_CLASS:
4914       return hpread_read_struct_type (hp_type, dn_bufp, objfile);
4915 
4916     case DNTT_TYPE_GENFIELD:
4917       /* Chase pointer from GENFIELD to FIELD, and make recursive
4918        * call on that.
4919        */
4920       return hpread_type_lookup (dn_bufp->dgenfield.field, objfile);
4921 
4922     case DNTT_TYPE_VFUNC:
4923       /* C++ virtual function.
4924        * We get here in the course of processing a class type which
4925        * contains virtual functions. Just go through another level
4926        * of indirection to get to the pointed-to function SOM.
4927        */
4928       return hpread_type_lookup (dn_bufp->dvfunc.funcptr, objfile);
4929 
4930     case DNTT_TYPE_MODIFIER:
4931       /* Check the modifiers and then just make a recursive call on
4932        * the "type" pointed to by the modifier DNTT.
4933        *
4934        * pai:: FIXME -- do we ever want to handle "m_duplicate" and
4935        * "m_void" modifiers?  Is static_flag really needed here?
4936        * (m_static used for methods of classes, elsewhere).
4937        */
4938       tmp_type = make_cv_type (dn_bufp->dmodifier.m_const,
4939 			       dn_bufp->dmodifier.m_volatile,
4940 		      hpread_type_lookup (dn_bufp->dmodifier.type, objfile),
4941 			       0);
4942       return tmp_type;
4943 
4944 
4945     case DNTT_TYPE_MEMFUNC:
4946       /* Member function. Treat like a function.
4947        * I think we get here in the course of processing a
4948        * pointer-to-member-function type...
4949        */
4950       return hpread_read_function_type (hp_type, dn_bufp, objfile, 0);
4951 
4952     case DNTT_TYPE_DOC_MEMFUNC:
4953       return hpread_read_doc_function_type (hp_type, dn_bufp, objfile, 0);
4954 
4955     case DNTT_TYPE_TEMPLATE:
4956       /* Template - sort of the header for a template definition,
4957        * which like a class, points to a member list and also points
4958        * to a TEMPLATE_ARG list of type-arguments.
4959        */
4960       return hpread_read_struct_type (hp_type, dn_bufp, objfile);
4961 
4962     case DNTT_TYPE_TEMPLATE_ARG:
4963       {
4964 	char *name;
4965 	/* The TEMPLATE record points to an argument list of
4966 	 * TEMPLATE_ARG records, each of which describes one
4967 	 * of the type-arguments.
4968 	 */
4969 	name = VT (objfile) + dn_bufp->dtempl_arg.name;
4970 	return hpread_read_templ_arg_type (hp_type, dn_bufp, objfile, name);
4971       }
4972 
4973     case DNTT_TYPE_FUNC_TEMPLATE:
4974       /* We wind up here when processing a TEMPLATE type,
4975        * if the template has member function(s).
4976        * Treat it like a FUNCTION.
4977        */
4978       return hpread_read_function_type (hp_type, dn_bufp, objfile, 0);
4979 
4980     case DNTT_TYPE_LINK:
4981       /* The LINK record is used to link up templates with instantiations.
4982        * There is no type associated with the LINK record per se.
4983        */
4984       return lookup_fundamental_type (objfile, FT_VOID);
4985 
4986       /* Also not yet handled... */
4987       /* case DNTT_TYPE_DYN_ARRAY_DESC: */
4988       /* case DNTT_TYPE_DESC_SUBRANGE: */
4989       /* case DNTT_TYPE_BEGIN_EXT: */
4990       /* case DNTT_TYPE_INLN: */
4991       /* case DNTT_TYPE_INLN_LIST: */
4992       /* case DNTT_TYPE_ALIAS: */
4993     default:
4994       /* A fancy way of returning NULL */
4995       return lookup_fundamental_type (objfile, FT_VOID);
4996     }
4997 }
4998 
4999 static sltpointer
hpread_record_lines(struct subfile * subfile,sltpointer s_idx,sltpointer e_idx,struct objfile * objfile,CORE_ADDR offset)5000 hpread_record_lines (struct subfile *subfile, sltpointer s_idx,
5001 		     sltpointer e_idx, struct objfile *objfile,
5002 		     CORE_ADDR offset)
5003 {
5004   union sltentry *sl_bufp;
5005 
5006   while (s_idx <= e_idx)
5007     {
5008       sl_bufp = hpread_get_slt (s_idx, objfile);
5009       /* Only record "normal" entries in the SLT.  */
5010       if (sl_bufp->snorm.sltdesc == SLT_NORMAL
5011 	  || sl_bufp->snorm.sltdesc == SLT_EXIT)
5012 	record_line (subfile, sl_bufp->snorm.line,
5013 		     sl_bufp->snorm.address + offset);
5014       else if (sl_bufp->snorm.sltdesc == SLT_NORMAL_OFFSET)
5015 	record_line (subfile, sl_bufp->snormoff.line,
5016 		     sl_bufp->snormoff.address + offset);
5017       s_idx++;
5018     }
5019   return e_idx;
5020 }
5021 
5022 /* Given a function "f" which is a member of a class, find
5023  * the classname that it is a member of. Used to construct
5024  * the name (e.g., "c::f") which GDB will put in the
5025  * "demangled name" field of the function's symbol.
5026  * Called from hpread_process_one_debug_symbol()
5027  * If "f" is not a member function, return NULL.
5028  */
5029 static char *
class_of(struct type * functype)5030 class_of (struct type *functype)
5031 {
5032   struct type *first_param_type;
5033   char *first_param_name;
5034   struct type *pointed_to_type;
5035   char *class_name;
5036 
5037   /* Check that the function has a first argument "this",
5038    * and that "this" is a pointer to a class. If not,
5039    * functype is not a member function, so return NULL.
5040    */
5041   if (TYPE_NFIELDS (functype) == 0)
5042     return NULL;
5043   first_param_name = TYPE_FIELD_NAME (functype, 0);
5044   if (first_param_name == NULL)
5045     return NULL;		/* paranoia */
5046   if (strcmp (first_param_name, "this"))
5047     return NULL;
5048   first_param_type = TYPE_FIELD_TYPE (functype, 0);
5049   if (first_param_type == NULL)
5050     return NULL;		/* paranoia */
5051   if (TYPE_CODE (first_param_type) != TYPE_CODE_PTR)
5052     return NULL;
5053 
5054   /* Get the thing that "this" points to, check that
5055    * it's a class, and get its class name.
5056    */
5057   pointed_to_type = TYPE_TARGET_TYPE (first_param_type);
5058   if (pointed_to_type == NULL)
5059     return NULL;		/* paranoia */
5060   if (TYPE_CODE (pointed_to_type) != TYPE_CODE_CLASS)
5061     return NULL;
5062   class_name = TYPE_NAME (pointed_to_type);
5063   if (class_name == NULL)
5064     return NULL;		/* paranoia */
5065 
5066   /* The class name may be of the form "class c", in which case
5067    * we want to strip off the leading "class ".
5068    */
5069   if (strncmp (class_name, "class ", 6) == 0)
5070     class_name += 6;
5071 
5072   return class_name;
5073 }
5074 
5075 /* Internalize one native debug symbol.
5076  * Called in a loop from hpread_expand_symtab().
5077  * Arguments:
5078  *   dn_bufp:
5079  *   name:
5080  *   section_offsets:
5081  *   objfile:
5082  *   text_offset:
5083  *   text_size:
5084  *   filename:
5085  *   index:             Index of this symbol
5086  *   at_module_boundary_p Pointer to boolean flag to control caller's loop.
5087  */
5088 
5089 static void
hpread_process_one_debug_symbol(union dnttentry * dn_bufp,char * name,struct section_offsets * section_offsets,struct objfile * objfile,CORE_ADDR text_offset,int text_size,char * filename,int index,int * at_module_boundary_p)5090 hpread_process_one_debug_symbol (union dnttentry *dn_bufp, char *name,
5091 				 struct section_offsets *section_offsets,
5092 				 struct objfile *objfile, CORE_ADDR text_offset,
5093 				 int text_size, char *filename, int index,
5094 				 int *at_module_boundary_p)
5095 {
5096   unsigned long desc;
5097   int type;
5098   CORE_ADDR valu;
5099   int offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
5100   int data_offset = ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
5101   union dnttentry *dn_temp;
5102   dnttpointer hp_type;
5103   struct symbol *sym;
5104   struct context_stack *new;
5105   char *class_scope_name;
5106 
5107   /* Allocate one GDB debug symbol and fill in some default values. */
5108   sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
5109 					 sizeof (struct symbol));
5110   memset (sym, 0, sizeof (struct symbol));
5111   DEPRECATED_SYMBOL_NAME (sym) = obsavestring (name, strlen (name), &objfile->objfile_obstack);
5112   SYMBOL_LANGUAGE (sym) = language_auto;
5113   SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
5114   SYMBOL_LINE (sym) = 0;
5115   SYMBOL_VALUE (sym) = 0;
5116   SYMBOL_CLASS (sym) = LOC_TYPEDEF;
5117 
5118   /* Just a trick in case the SOM debug symbol is a type definition.
5119    * There are routines that are set up to build a GDB type symbol, given
5120    * a SOM dnttpointer. So we set up a dummy SOM dnttpointer "hp_type".
5121    * This allows us to call those same routines.
5122    */
5123   hp_type.dnttp.extension = 1;
5124   hp_type.dnttp.immediate = 0;
5125   hp_type.dnttp.global = 0;
5126   hp_type.dnttp.index = index;
5127 
5128   /* This "type" is the type of SOM record.
5129    * Switch on SOM type.
5130    */
5131   type = dn_bufp->dblock.kind;
5132   switch (type)
5133     {
5134     case DNTT_TYPE_SRCFILE:
5135       /* This type of symbol indicates from which source file or
5136        * include file any following data comes. It may indicate:
5137        *
5138        * o   The start of an entirely new source file (and thus
5139        *     a new module)
5140        *
5141        * o   The start of a different source file due to #include
5142        *
5143        * o   The end of an include file and the return to the original
5144        *     file. Thus if "foo.c" includes "bar.h", we see first
5145        *     a SRCFILE for foo.c, then one for bar.h, and then one for
5146        *     foo.c again.
5147        *
5148        * If it indicates the start of a new module then we must
5149        * finish the symbol table of the previous module
5150        * (if any) and start accumulating a new symbol table.
5151        */
5152 
5153       valu = text_offset;
5154       if (!last_source_file)
5155 	{
5156 	  /*
5157 	   * A note on "last_source_file": this is a char* pointing
5158 	   * to the actual file name.  "start_symtab" sets it,
5159 	   * "end_symtab" clears it.
5160 	   *
5161 	   * So if "last_source_file" is NULL, then either this is
5162 	   * the first record we are looking at, or a previous call
5163 	   * to "end_symtab()" was made to close out the previous
5164 	   * module.  Since we're now quitting the scan loop when we
5165 	   * see a MODULE END record, we should never get here, except
5166 	   * in the case that we're not using the quick look-up tables
5167 	   * and have to use the old system as a fall-back.
5168 	   */
5169 	  start_symtab (name, NULL, valu);
5170 	  record_debugformat ("HP");
5171 	  SL_INDEX (objfile) = dn_bufp->dsfile.address;
5172 	}
5173 
5174       else
5175 	{
5176 	  /* Either a new include file, or a SRCFILE record
5177 	   * saying we are back in the main source (or out of
5178 	   * a nested include file) again.
5179 	   */
5180 	  SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5181 						    SL_INDEX (objfile),
5182 						    dn_bufp->dsfile.address,
5183 						    objfile, offset);
5184 	}
5185 
5186       /* A note on "start_subfile".  This routine will check
5187        * the name we pass it and look for an existing subfile
5188        * of that name.  There's thus only one sub-file for the
5189        * actual source (e.g. for "foo.c" in foo.c), despite the
5190        * fact that we'll see lots of SRCFILE entries for foo.c
5191        * inside foo.c.
5192        */
5193       start_subfile (name, NULL);
5194       break;
5195 
5196     case DNTT_TYPE_MODULE:
5197       /*
5198        * We no longer ignore DNTT_TYPE_MODULE symbols.  The module
5199        * represents the meaningful semantic structure of a compilation
5200        * unit.  We expect to start the psymtab-to-symtab expansion
5201        * looking at a MODULE entry, and to end it at the corresponding
5202        * END MODULE entry.
5203        *
5204        *--Begin outdated comments
5205        *
5206        * This record signifies the start of a new source module
5207        * In C/C++ there is no explicit "module" construct in the language,
5208        * but each compilation unit is implicitly a module and they
5209        * do emit the DNTT_TYPE_MODULE records.
5210        * The end of the module is marked by a matching DNTT_TYPE_END record.
5211        *
5212        * The reason GDB gets away with ignoring the DNTT_TYPE_MODULE record
5213        * is it notices the DNTT_TYPE_END record for the previous
5214        * module (see comments under DNTT_TYPE_END case), and then treats
5215        * the next DNTT_TYPE_SRCFILE record as if it were the module-start record.
5216        * (i.e., it makes a start_symtab() call).
5217        * This scheme seems a little convoluted, but I'll leave it
5218        * alone on the principle "if it ain't broke don't fix
5219        * it". (RT).
5220        *
5221        *-- End outdated comments
5222        */
5223 
5224       valu = text_offset;
5225       if (!last_source_file)
5226 	{
5227 	  /* Start of a new module. We know this because "last_source_file"
5228 	   * is NULL, which can only happen the first time or if we just
5229 	   * made a call to end_symtab() to close out the previous module.
5230 	   */
5231 	  start_symtab (name, NULL, valu);
5232 	  SL_INDEX (objfile) = dn_bufp->dmodule.address;
5233 	}
5234       else
5235 	{
5236 	  /* This really shouldn't happen if we're using the quick
5237 	   * look-up tables, as it would mean we'd scanned past an
5238 	   * END MODULE entry.  But if we're not using the tables,
5239 	   * we started the module on the SRCFILE entry, so it's ok.
5240 	   * For now, accept this.
5241 	   */
5242 	  /* warning( "Error expanding psymtab, missed module end, found entry for %s",
5243 	   *           name );
5244 	   */
5245 	  *at_module_boundary_p = -1;
5246 	}
5247 
5248       start_subfile (name, NULL);
5249       break;
5250 
5251     case DNTT_TYPE_FUNCTION:
5252     case DNTT_TYPE_ENTRY:
5253       /* A function or secondary entry point.  */
5254       valu = dn_bufp->dfunc.lowaddr + offset;
5255 
5256       /* Record lines up to this point. */
5257       SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5258 						SL_INDEX (objfile),
5259 						dn_bufp->dfunc.address,
5260 						objfile, offset);
5261 
5262       WITHIN_FUNCTION (objfile) = 1;
5263       CURRENT_FUNCTION_VALUE (objfile) = valu;
5264 
5265       /* Stack must be empty now.  */
5266       if (context_stack_depth != 0)
5267 	lbrac_unmatched_complaint (symnum);
5268       new = push_context (0, valu);
5269 
5270       /* Built a type for the function. This includes processing
5271        * the symbol records for the function parameters.
5272        */
5273       SYMBOL_CLASS (sym) = LOC_BLOCK;
5274       SYMBOL_TYPE (sym) = hpread_read_function_type (hp_type, dn_bufp, objfile, 1);
5275 
5276       /* All functions in C++ have prototypes.  For C we don't have enough
5277          information in the debug info.  */
5278       if (SYMBOL_LANGUAGE (sym) == language_cplus)
5279 	TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
5280 
5281       /* The "DEPRECATED_SYMBOL_NAME" field is expected to be the mangled name
5282        * (if any), which we get from the "alias" field of the SOM record
5283        * if that exists.
5284        */
5285       if ((dn_bufp->dfunc.language == HP_LANGUAGE_CPLUSPLUS) &&
5286 	  dn_bufp->dfunc.alias &&	/* has an alias */
5287 	  *(char *) (VT (objfile) + dn_bufp->dfunc.alias))	/* not a null string */
5288 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->dfunc.alias;
5289       else
5290 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->dfunc.name;
5291 
5292       /* Special hack to get around HP compilers' insistence on
5293        * reporting "main" as "_MAIN_" for C/C++ */
5294       if ((strcmp (DEPRECATED_SYMBOL_NAME (sym), "_MAIN_") == 0) &&
5295 	  (strcmp (VT (objfile) + dn_bufp->dfunc.name, "main") == 0))
5296 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->dfunc.name;
5297 
5298       /* The SYMBOL_CPLUS_DEMANGLED_NAME field is expected to
5299        * be the demangled name.
5300        */
5301       if (dn_bufp->dfunc.language == HP_LANGUAGE_CPLUSPLUS)
5302 	{
5303 	  /* SYMBOL_INIT_DEMANGLED_NAME is a macro which winds up
5304 	   * calling the demangler in libiberty (cplus_demangle()) to
5305 	   * do the job. This generally does the job, even though
5306 	   * it's intended for the GNU compiler and not the aCC compiler
5307 	   * Note that SYMBOL_INIT_DEMANGLED_NAME calls the
5308 	   * demangler with arguments DMGL_PARAMS | DMGL_ANSI.
5309 	   * Generally, we don't want params when we display
5310 	   * a demangled name, but when I took out the DMGL_PARAMS,
5311 	   * some things broke, so I'm leaving it in here, and
5312 	   * working around the issue in stack.c. - RT
5313 	   */
5314 	  SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->objfile_obstack);
5315 	  if ((DEPRECATED_SYMBOL_NAME (sym) == VT (objfile) + dn_bufp->dfunc.alias) &&
5316 	      (!SYMBOL_CPLUS_DEMANGLED_NAME (sym)))
5317 	    {
5318 
5319 	      /* Well, the symbol name is mangled, but the
5320 	       * demangler in libiberty failed so the demangled
5321 	       * field is still NULL. Try to
5322 	       * do the job ourselves based on the "name" field
5323 	       * in the SOM record. A complication here is that
5324 	       * the name field contains only the function name
5325 	       * (like "f"), whereas we want the class qualification
5326 	       * (as in "c::f"). Try to reconstruct that.
5327 	       */
5328 	      char *basename;
5329 	      char *classname;
5330 	      char *dem_name;
5331 	      basename = VT (objfile) + dn_bufp->dfunc.name;
5332 	      classname = class_of (SYMBOL_TYPE (sym));
5333 	      if (classname)
5334 		{
5335 		  dem_name = xmalloc (strlen (basename) + strlen (classname) + 3);
5336 		  strcpy (dem_name, classname);
5337 		  strcat (dem_name, "::");
5338 		  strcat (dem_name, basename);
5339 		  SYMBOL_CPLUS_DEMANGLED_NAME (sym) = dem_name;
5340 		  SYMBOL_LANGUAGE (sym) = language_cplus;
5341 		}
5342 	    }
5343 	}
5344 
5345       /* Add the function symbol to the list of symbols in this blockvector */
5346       if (dn_bufp->dfunc.global)
5347 	add_symbol_to_list (sym, &global_symbols);
5348       else
5349 	add_symbol_to_list (sym, &file_symbols);
5350       new->name = sym;
5351 
5352       /* Search forward to the next BEGIN and also read
5353        * in the line info up to that point.
5354        * Not sure why this is needed.
5355        * In HP FORTRAN this code is harmful since there
5356        * may not be a BEGIN after the FUNCTION.
5357        * So I made it C/C++ specific. - RT
5358        */
5359       if (dn_bufp->dfunc.language == HP_LANGUAGE_C ||
5360 	  dn_bufp->dfunc.language == HP_LANGUAGE_CPLUSPLUS)
5361 	{
5362 	  while (dn_bufp->dblock.kind != DNTT_TYPE_BEGIN)
5363 	    {
5364 	      dn_bufp = hpread_get_lntt (++index, objfile);
5365 	      if (dn_bufp->dblock.extension)
5366 		continue;
5367 	    }
5368 	  SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5369 						    SL_INDEX (objfile),
5370 						    dn_bufp->dbegin.address,
5371 						    objfile, offset);
5372 	  SYMBOL_LINE (sym) = hpread_get_line (dn_bufp->dbegin.address, objfile);
5373 	}
5374       record_line (current_subfile, SYMBOL_LINE (sym), valu);
5375       break;
5376 
5377     case DNTT_TYPE_DOC_FUNCTION:
5378       valu = dn_bufp->ddocfunc.lowaddr + offset;
5379 
5380       /* Record lines up to this point. */
5381       SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5382 						SL_INDEX (objfile),
5383 						dn_bufp->ddocfunc.address,
5384 						objfile, offset);
5385 
5386       WITHIN_FUNCTION (objfile) = 1;
5387       CURRENT_FUNCTION_VALUE (objfile) = valu;
5388       /* Stack must be empty now.  */
5389       if (context_stack_depth != 0)
5390 	lbrac_unmatched_complaint (symnum);
5391       new = push_context (0, valu);
5392 
5393       /* Built a type for the function. This includes processing
5394        * the symbol records for the function parameters.
5395        */
5396       SYMBOL_CLASS (sym) = LOC_BLOCK;
5397       SYMBOL_TYPE (sym) = hpread_read_doc_function_type (hp_type, dn_bufp, objfile, 1);
5398 
5399       /* The "DEPRECATED_SYMBOL_NAME" field is expected to be the mangled name
5400        * (if any), which we get from the "alias" field of the SOM record
5401        * if that exists.
5402        */
5403       if ((dn_bufp->ddocfunc.language == HP_LANGUAGE_CPLUSPLUS) &&
5404 	  dn_bufp->ddocfunc.alias &&	/* has an alias */
5405 	  *(char *) (VT (objfile) + dn_bufp->ddocfunc.alias))	/* not a null string */
5406 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->ddocfunc.alias;
5407       else
5408 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->ddocfunc.name;
5409 
5410       /* Special hack to get around HP compilers' insistence on
5411        * reporting "main" as "_MAIN_" for C/C++ */
5412       if ((strcmp (DEPRECATED_SYMBOL_NAME (sym), "_MAIN_") == 0) &&
5413 	  (strcmp (VT (objfile) + dn_bufp->ddocfunc.name, "main") == 0))
5414 	DEPRECATED_SYMBOL_NAME (sym) = VT (objfile) + dn_bufp->ddocfunc.name;
5415 
5416       if (dn_bufp->ddocfunc.language == HP_LANGUAGE_CPLUSPLUS)
5417 	{
5418 
5419 	  /* SYMBOL_INIT_DEMANGLED_NAME is a macro which winds up
5420 	   * calling the demangler in libiberty (cplus_demangle()) to
5421 	   * do the job. This generally does the job, even though
5422 	   * it's intended for the GNU compiler and not the aCC compiler
5423 	   * Note that SYMBOL_INIT_DEMANGLED_NAME calls the
5424 	   * demangler with arguments DMGL_PARAMS | DMGL_ANSI.
5425 	   * Generally, we don't want params when we display
5426 	   * a demangled name, but when I took out the DMGL_PARAMS,
5427 	   * some things broke, so I'm leaving it in here, and
5428 	   * working around the issue in stack.c. - RT
5429 	   */
5430 	  SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->objfile_obstack);
5431 
5432 	  if ((DEPRECATED_SYMBOL_NAME (sym) == VT (objfile) + dn_bufp->ddocfunc.alias) &&
5433 	      (!SYMBOL_CPLUS_DEMANGLED_NAME (sym)))
5434 	    {
5435 
5436 	      /* Well, the symbol name is mangled, but the
5437 	       * demangler in libiberty failed so the demangled
5438 	       * field is still NULL. Try to
5439 	       * do the job ourselves based on the "name" field
5440 	       * in the SOM record. A complication here is that
5441 	       * the name field contains only the function name
5442 	       * (like "f"), whereas we want the class qualification
5443 	       * (as in "c::f"). Try to reconstruct that.
5444 	       */
5445 	      char *basename;
5446 	      char *classname;
5447 	      char *dem_name;
5448 	      basename = VT (objfile) + dn_bufp->ddocfunc.name;
5449 	      classname = class_of (SYMBOL_TYPE (sym));
5450 	      if (classname)
5451 		{
5452 		  dem_name = xmalloc (strlen (basename) + strlen (classname) + 3);
5453 		  strcpy (dem_name, classname);
5454 		  strcat (dem_name, "::");
5455 		  strcat (dem_name, basename);
5456 		  SYMBOL_CPLUS_DEMANGLED_NAME (sym) = dem_name;
5457 		  SYMBOL_LANGUAGE (sym) = language_cplus;
5458 		}
5459 	    }
5460 	}
5461 
5462       /* Add the function symbol to the list of symbols in this blockvector */
5463       if (dn_bufp->ddocfunc.global)
5464 	add_symbol_to_list (sym, &global_symbols);
5465       else
5466 	add_symbol_to_list (sym, &file_symbols);
5467       new->name = sym;
5468 
5469       /* Search forward to the next BEGIN and also read
5470        * in the line info up to that point.
5471        * Not sure why this is needed.
5472        * In HP FORTRAN this code is harmful since there
5473        * may not be a BEGIN after the FUNCTION.
5474        * So I made it C/C++ specific. - RT
5475        */
5476       if (dn_bufp->ddocfunc.language == HP_LANGUAGE_C ||
5477 	  dn_bufp->ddocfunc.language == HP_LANGUAGE_CPLUSPLUS)
5478 	{
5479 	  while (dn_bufp->dblock.kind != DNTT_TYPE_BEGIN)
5480 	    {
5481 	      dn_bufp = hpread_get_lntt (++index, objfile);
5482 	      if (dn_bufp->dblock.extension)
5483 		continue;
5484 	    }
5485 	  SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5486 						    SL_INDEX (objfile),
5487 						    dn_bufp->dbegin.address,
5488 						    objfile, offset);
5489 	  SYMBOL_LINE (sym) = hpread_get_line (dn_bufp->dbegin.address, objfile);
5490 	}
5491       record_line (current_subfile, SYMBOL_LINE (sym), valu);
5492       break;
5493 
5494     case DNTT_TYPE_BEGIN:
5495       /* Begin a new scope. */
5496       if (context_stack_depth == 1 /* this means we're at function level */  &&
5497 	  context_stack[0].name != NULL /* this means it's a function */  &&
5498 	  context_stack[0].depth == 0	/* this means it's the first BEGIN
5499 					   we've seen after the FUNCTION */
5500 	)
5501 	{
5502 	  /* This is the first BEGIN after a FUNCTION.
5503 	   * We ignore this one, since HP compilers always insert
5504 	   * at least one BEGIN, i.e. it's:
5505 	   *
5506 	   *     FUNCTION
5507 	   *     argument symbols
5508 	   *     BEGIN
5509 	   *     local symbols
5510 	   *        (possibly nested BEGIN ... END's if there are inner { } blocks)
5511 	   *     END
5512 	   *     END
5513 	   *
5514 	   * By ignoring this first BEGIN, the local symbols get treated
5515 	   * as belonging to the function scope, and "print func::local_sym"
5516 	   * works (which is what we want).
5517 	   */
5518 
5519 	  /* All we do here is increase the depth count associated with
5520 	   * the FUNCTION entry in the context stack. This ensures that
5521 	   * the next BEGIN we see (if any), representing a real nested { }
5522 	   * block, will get processed.
5523 	   */
5524 
5525 	  context_stack[0].depth++;
5526 
5527 	}
5528       else
5529 	{
5530 
5531 	  /* Record lines up to this SLT pointer. */
5532 	  SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5533 						    SL_INDEX (objfile),
5534 						    dn_bufp->dbegin.address,
5535 						    objfile, offset);
5536 	  /* Calculate start address of new scope */
5537 	  valu = hpread_get_location (dn_bufp->dbegin.address, objfile);
5538 	  valu += offset;	/* Relocate for dynamic loading */
5539 	  /* We use the scope start DNTT index as nesting depth identifier! */
5540 	  desc = hpread_get_scope_start (dn_bufp->dbegin.address, objfile);
5541 	  new = push_context (desc, valu);
5542 	}
5543       break;
5544 
5545     case DNTT_TYPE_END:
5546       /* End a scope.  */
5547 
5548       /* Valid end kinds are:
5549        *  MODULE
5550        *  FUNCTION
5551        *  WITH
5552        *  COMMON
5553        *  BEGIN
5554        *  CLASS_SCOPE
5555        */
5556 
5557       SL_INDEX (objfile) = hpread_record_lines (current_subfile,
5558 						SL_INDEX (objfile),
5559 						dn_bufp->dend.address,
5560 						objfile, offset);
5561       switch (dn_bufp->dend.endkind)
5562 	{
5563 	case DNTT_TYPE_MODULE:
5564 	  /* Ending a module ends the symbol table for that module.
5565 	   * Calling end_symtab() has the side effect of clearing the
5566 	   * last_source_file pointer, which in turn signals
5567 	   * process_one_debug_symbol() to treat the next DNTT_TYPE_SRCFILE
5568 	   * record as a module-begin.
5569 	   */
5570 	  valu = text_offset + text_size + offset;
5571 
5572 	  /* Tell our caller that we're done with expanding the
5573 	   * debug information for a module.
5574 	   */
5575 	  *at_module_boundary_p = 1;
5576 
5577 	  /* Don't do this, as our caller will do it!
5578 
5579 	   *      (void) end_symtab (valu, objfile, 0);
5580 	   */
5581 	  break;
5582 
5583 	case DNTT_TYPE_FUNCTION:
5584 	  /* Ending a function, well, ends the function's scope.  */
5585 	  dn_temp = hpread_get_lntt (dn_bufp->dend.beginscope.dnttp.index,
5586 				     objfile);
5587 	  valu = dn_temp->dfunc.hiaddr + offset;
5588 	  /* Insert func params into local list */
5589 	  merge_symbol_lists (&param_symbols, &local_symbols);
5590 	  new = pop_context ();
5591 	  /* Make a block for the local symbols within.  */
5592 	  finish_block (new->name, &local_symbols, new->old_blocks,
5593 			new->start_addr, valu, objfile);
5594 	  WITHIN_FUNCTION (objfile) = 0;	/* This may have to change for Pascal */
5595 	  local_symbols = new->locals;
5596 	  param_symbols = new->params;
5597 	  break;
5598 
5599 	case DNTT_TYPE_BEGIN:
5600 	  if (context_stack_depth == 1 &&
5601 	      context_stack[0].name != NULL &&
5602 	      context_stack[0].depth == 1)
5603 	    {
5604 	      /* This is the END corresponding to the
5605 	       * BEGIN which we ignored - see DNTT_TYPE_BEGIN case above.
5606 	       */
5607 	      context_stack[0].depth--;
5608 	    }
5609 	  else
5610 	    {
5611 	      /* Ending a local scope.  */
5612 	      valu = hpread_get_location (dn_bufp->dend.address, objfile);
5613 	      /* Why in the hell is this needed?  */
5614 	      valu += offset + 9;	/* Relocate for dynamic loading */
5615 	      new = pop_context ();
5616 	      desc = dn_bufp->dend.beginscope.dnttp.index;
5617 	      if (desc != new->depth)
5618 		lbrac_mismatch_complaint (symnum);
5619 
5620 	      /* Make a block for the local symbols within.  */
5621 	      finish_block (new->name, &local_symbols, new->old_blocks,
5622 			    new->start_addr, valu, objfile);
5623 	      local_symbols = new->locals;
5624 	      param_symbols = new->params;
5625 	    }
5626 	  break;
5627 
5628 	case DNTT_TYPE_WITH:
5629 	  /* Since we ignore the DNTT_TYPE_WITH that starts the scope,
5630 	   * we can ignore the DNTT_TYPE_END that ends it.
5631 	   */
5632 	  break;
5633 
5634 	case DNTT_TYPE_COMMON:
5635 	  /* End a FORTRAN common block. We don't currently handle these */
5636 	  complaint (&symfile_complaints,
5637 		     "unhandled symbol in hp-symtab-read.c: DNTT_TYPE_COMMON/DNTT_TYPE_END.\n");
5638 	  break;
5639 
5640 	case DNTT_TYPE_CLASS_SCOPE:
5641 
5642 	  /* pai: FIXME Not handling nested classes for now -- must
5643 	     * maintain a stack */
5644 	  class_scope_name = NULL;
5645 
5646 #if 0
5647 	  /* End a class scope */
5648 	  valu = hpread_get_location (dn_bufp->dend.address, objfile);
5649 	  /* Why in the hell is this needed?  */
5650 	  valu += offset + 9;	/* Relocate for dynamic loading */
5651 	  new = pop_context ();
5652 	  desc = dn_bufp->dend.beginscope.dnttp.index;
5653 	  if (desc != new->depth)
5654 	    lbrac_mismatch_complaint ((char *) symnum);
5655 	  /* Make a block for the local symbols within.  */
5656 	  finish_block (new->name, &local_symbols, new->old_blocks,
5657 			new->start_addr, valu, objfile);
5658 	  local_symbols = new->locals;
5659 	  param_symbols = new->params;
5660 #endif
5661 	  break;
5662 
5663 	default:
5664 	  complaint (&symfile_complaints,
5665 		     "internal error in hp-symtab-read.c: Unexpected DNTT_TYPE_END kind.");
5666 	  break;
5667 	}
5668       break;
5669 
5670       /* DNTT_TYPE_IMPORT is not handled */
5671 
5672     case DNTT_TYPE_LABEL:
5673       SYMBOL_DOMAIN (sym) = LABEL_DOMAIN;
5674       break;
5675 
5676     case DNTT_TYPE_FPARAM:
5677       /* Function parameters.  */
5678       /* Note 1: This code was present in the 4.16 sources, and then
5679          removed, because fparams are handled in
5680          hpread_read_function_type().  However, while fparam symbols
5681          are indeed handled twice, this code here cannot be removed
5682          because then they don't get added to the local symbol list of
5683          the function's code block, which leads to a failure to look
5684          up locals, "this"-relative member names, etc.  So I've put
5685          this code back in. pai/1997-07-21 */
5686       /* Note 2: To fix a defect, we stopped adding FPARAMS to local_symbols
5687          in hpread_read_function_type(), so FPARAMS had to be handled
5688          here.  I changed the location to be the appropriate argument
5689          kinds rather than LOC_LOCAL. pai/1997-08-08 */
5690       /* Note 3: Well, the fix in Note 2 above broke argument printing
5691          in traceback frames, and further it makes assumptions about the
5692          order of the FPARAM entries from HP compilers (cc and aCC in particular
5693          generate them in reverse orders -- fixing one breaks for the other).
5694          So I've added code in hpread_read_function_type() to add fparams
5695          to a param_symbols list for the current context level.  These are
5696          then merged into local_symbols when a function end is reached.
5697          pai/1997-08-11 */
5698 
5699       break;			/* do nothing; handled in hpread_read_function_type() */
5700 
5701 #if 0				/* Old code */
5702       if (dn_bufp->dfparam.regparam)
5703 	SYMBOL_CLASS (sym) = LOC_REGISTER;
5704       else if (dn_bufp->dfparam.indirect)
5705 	SYMBOL_CLASS (sym) = LOC_REF_ARG;
5706       else
5707 	SYMBOL_CLASS (sym) = LOC_ARG;
5708       SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
5709       if (dn_bufp->dfparam.copyparam)
5710 	{
5711 	  SYMBOL_VALUE (sym) = dn_bufp->dfparam.location;
5712 	  SYMBOL_VALUE (sym)
5713 	    += hpread_adjust_stack_address (CURRENT_FUNCTION_VALUE (objfile));
5714 	}
5715       else
5716 	SYMBOL_VALUE (sym) = dn_bufp->dfparam.location;
5717       SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->dfparam.type, objfile);
5718       add_symbol_to_list (sym, &fparam_symbols);
5719       break;
5720 #endif
5721 
5722     case DNTT_TYPE_SVAR:
5723       /* Static variables.  */
5724       SYMBOL_CLASS (sym) = LOC_STATIC;
5725 
5726       /* Note: There is a case that arises with globals in shared
5727        * libraries where we need to set the address to LOC_INDIRECT.
5728        * This case is if you have a global "g" in one library, and
5729        * it is referenced "extern <type> g;" in another library.
5730        * If we're processing the symbols for the referencing library,
5731        * we'll see a global "g", but in this case the address given
5732        * in the symbol table contains a pointer to the real "g".
5733        * We use the storage class LOC_INDIRECT to indicate this. RT
5734        */
5735       if (is_in_import_list (DEPRECATED_SYMBOL_NAME (sym), objfile))
5736 	SYMBOL_CLASS (sym) = LOC_INDIRECT;
5737 
5738       SYMBOL_VALUE_ADDRESS (sym) = dn_bufp->dsvar.location + data_offset;
5739       SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->dsvar.type, objfile);
5740 
5741       if (dn_bufp->dsvar.global)
5742 	add_symbol_to_list (sym, &global_symbols);
5743 
5744       else if (WITHIN_FUNCTION (objfile))
5745 	add_symbol_to_list (sym, &local_symbols);
5746 
5747       else
5748 	add_symbol_to_list (sym, &file_symbols);
5749 
5750       if (dn_bufp->dsvar.thread_specific)
5751 	{
5752 	  /* Thread-local variable.
5753 	   */
5754 	  SYMBOL_CLASS (sym) = LOC_HP_THREAD_LOCAL_STATIC;
5755 	  SYMBOL_BASEREG (sym) = HPPA_CR27_REGNUM;
5756 
5757 	  if (objfile->flags & OBJF_SHARED)
5758 	    {
5759 	      /*
5760 	       * This variable is not only thread local but
5761 	       * in a shared library.
5762 	       *
5763 	       * Alas, the shared lib structures are private
5764 	       * to "somsolib.c".  But C lets us point to one.
5765 	       */
5766 	      struct so_list *so;
5767               struct hppa_objfile_private *priv;
5768 
5769               priv = (struct hppa_objfile_private *)
5770 	        objfile_data (objfile, hppa_objfile_priv_data);
5771 	      if (priv == NULL)
5772 		error ("Internal error in reading shared library information.");
5773 
5774 	      so = ((struct hppa_objfile_private *) priv)->so_info;
5775 	      if (so == NULL)
5776 		error ("Internal error in reading shared library information.");
5777 
5778 	      /* Thread-locals in shared libraries do NOT have the
5779 	       * standard offset ("data_offset"), so we re-calculate
5780 	       * where to look for this variable, using a call-back
5781 	       * to interpret the private shared-library data.
5782 	       */
5783 	      SYMBOL_VALUE_ADDRESS (sym) = dn_bufp->dsvar.location +
5784 		so_lib_thread_start_addr (so);
5785 	    }
5786 	}
5787       break;
5788 
5789     case DNTT_TYPE_DVAR:
5790       /* Dynamic variables.  */
5791       if (dn_bufp->ddvar.regvar)
5792 	SYMBOL_CLASS (sym) = LOC_REGISTER;
5793       else
5794 	SYMBOL_CLASS (sym) = LOC_LOCAL;
5795 
5796       SYMBOL_VALUE (sym) = dn_bufp->ddvar.location;
5797       SYMBOL_VALUE (sym)
5798 	+= hpread_adjust_stack_address (CURRENT_FUNCTION_VALUE (objfile));
5799       SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->ddvar.type, objfile);
5800       if (dn_bufp->ddvar.global)
5801 	add_symbol_to_list (sym, &global_symbols);
5802       else if (WITHIN_FUNCTION (objfile))
5803 	add_symbol_to_list (sym, &local_symbols);
5804       else
5805 	add_symbol_to_list (sym, &file_symbols);
5806       break;
5807 
5808     case DNTT_TYPE_CONST:
5809       /* A constant (pascal?).  */
5810       SYMBOL_CLASS (sym) = LOC_CONST;
5811       SYMBOL_VALUE (sym) = dn_bufp->dconst.location;
5812       SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->dconst.type, objfile);
5813       if (dn_bufp->dconst.global)
5814 	add_symbol_to_list (sym, &global_symbols);
5815       else if (WITHIN_FUNCTION (objfile))
5816 	add_symbol_to_list (sym, &local_symbols);
5817       else
5818 	add_symbol_to_list (sym, &file_symbols);
5819       break;
5820 
5821     case DNTT_TYPE_TYPEDEF:
5822       /* A typedef. We do want to process these, since a name is
5823        * added to the domain for the typedef'ed name.
5824        */
5825       SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
5826       SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->dtype.type, objfile);
5827       if (dn_bufp->dtype.global)
5828 	add_symbol_to_list (sym, &global_symbols);
5829       else if (WITHIN_FUNCTION (objfile))
5830 	add_symbol_to_list (sym, &local_symbols);
5831       else
5832 	add_symbol_to_list (sym, &file_symbols);
5833       break;
5834 
5835     case DNTT_TYPE_TAGDEF:
5836       {
5837 	int global = dn_bufp->dtag.global;
5838 	/* Structure, union, enum, template, or class tag definition */
5839 	/* We do want to process these, since a name is
5840 	 * added to the domain for the tag name (and if C++ class,
5841 	 * for the typename also).
5842 	 */
5843 	SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
5844 
5845 	/* The tag contains in its "type" field a pointer to the
5846 	 * DNTT_TYPE_STRUCT, DNTT_TYPE_UNION, DNTT_TYPE_ENUM,
5847 	 * DNTT_TYPE_CLASS or DNTT_TYPE_TEMPLATE
5848 	 * record that actually defines the type.
5849 	 */
5850 	SYMBOL_TYPE (sym) = hpread_type_lookup (dn_bufp->dtype.type, objfile);
5851 	TYPE_NAME (sym->type) = DEPRECATED_SYMBOL_NAME (sym);
5852 	TYPE_TAG_NAME (sym->type) = DEPRECATED_SYMBOL_NAME (sym);
5853 	if (dn_bufp->dtag.global)
5854 	  add_symbol_to_list (sym, &global_symbols);
5855 	else if (WITHIN_FUNCTION (objfile))
5856 	  add_symbol_to_list (sym, &local_symbols);
5857 	else
5858 	  add_symbol_to_list (sym, &file_symbols);
5859 
5860 	/* If this is a C++ class, then we additionally
5861 	 * need to define a typedef for the
5862 	 * class type. E.g., so that the name "c" becomes visible as
5863 	 * a type name when the user says "class c { ... }".
5864 	 * In order to figure this out, we need to chase down the "type"
5865 	 * field to get to the DNTT_TYPE_CLASS record.
5866 	 *
5867 	 * We also add the typename for ENUM. Though this isn't
5868 	 * strictly correct, it is necessary because of the debug info
5869 	 * generated by the aCC compiler, in which we cannot
5870 	 * distinguish between:
5871 	 *   enum e { ... };
5872 	 * and
5873 	 *   typedef enum { ... } e;
5874 	 * I.e., the compiler emits the same debug info for the above
5875 	 * two cases, in both cases "e" appearing as a tagdef.
5876 	 * Therefore go ahead and generate the typename so that
5877 	 * "ptype e" will work in the above cases.
5878 	 *
5879 	 * We also add the typename for TEMPLATE, so as to allow "ptype t"
5880 	 * when "t" is a template name.
5881 	 */
5882 	if (dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile))
5883 	  dn_bufp = hpread_get_lntt (dn_bufp->dtag.type.dnttp.index, objfile);
5884 	else
5885 	  {
5886 	    complaint (&symfile_complaints, "error processing class tagdef");
5887 	    return;
5888 	  }
5889 	if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS ||
5890 	    dn_bufp->dblock.kind == DNTT_TYPE_ENUM ||
5891 	    dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
5892 	  {
5893 	    struct symbol *newsym;
5894 
5895 	    newsym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
5896 						    sizeof (struct symbol));
5897 	    memset (newsym, 0, sizeof (struct symbol));
5898 	    DEPRECATED_SYMBOL_NAME (newsym) = name;
5899 	    SYMBOL_LANGUAGE (newsym) = language_auto;
5900 	    SYMBOL_DOMAIN (newsym) = VAR_DOMAIN;
5901 	    SYMBOL_LINE (newsym) = 0;
5902 	    SYMBOL_VALUE (newsym) = 0;
5903 	    SYMBOL_CLASS (newsym) = LOC_TYPEDEF;
5904 	    SYMBOL_TYPE (newsym) = sym->type;
5905 	    if (global)
5906 	      add_symbol_to_list (newsym, &global_symbols);
5907 	    else if (WITHIN_FUNCTION (objfile))
5908 	      add_symbol_to_list (newsym, &local_symbols);
5909 	    else
5910 	      add_symbol_to_list (newsym, &file_symbols);
5911 	  }
5912       }
5913       break;
5914 
5915     case DNTT_TYPE_POINTER:
5916       /* Declares a pointer type. Should not be necessary to do anything
5917        * with the type at this level; these are processed
5918        * at the hpread_type_lookup() level.
5919        */
5920       break;
5921 
5922     case DNTT_TYPE_ENUM:
5923       /* Declares an enum type. Should not be necessary to do anything
5924        * with the type at this level; these are processed
5925        * at the hpread_type_lookup() level.
5926        */
5927       break;
5928 
5929     case DNTT_TYPE_MEMENUM:
5930       /* Member of enum */
5931       /* Ignored at this level, but hpread_read_enum_type() will take
5932        * care of walking the list of enumeration members.
5933        */
5934       break;
5935 
5936     case DNTT_TYPE_SET:
5937       /* Declares a set type. Should not be necessary to do anything
5938        * with the type at this level; these are processed
5939        * at the hpread_type_lookup() level.
5940        */
5941       break;
5942 
5943     case DNTT_TYPE_SUBRANGE:
5944       /* Declares a subrange type. Should not be necessary to do anything
5945        * with the type at this level; these are processed
5946        * at the hpread_type_lookup() level.
5947        */
5948       break;
5949 
5950     case DNTT_TYPE_ARRAY:
5951       /* Declares an array type. Should not be necessary to do anything
5952        * with the type at this level; these are processed
5953        * at the hpread_type_lookup() level.
5954        */
5955       break;
5956 
5957     case DNTT_TYPE_STRUCT:
5958     case DNTT_TYPE_UNION:
5959       /* Declares an struct/union type.
5960        * Should not be necessary to do anything
5961        * with the type at this level; these are processed
5962        * at the hpread_type_lookup() level.
5963        */
5964       break;
5965 
5966     case DNTT_TYPE_FIELD:
5967       /* Structure/union/class field */
5968       /* Ignored at this level, but hpread_read_struct_type() will take
5969        * care of walking the list of structure/union/class members.
5970        */
5971       break;
5972 
5973       /* DNTT_TYPE_VARIANT is not handled by GDB */
5974 
5975       /* DNTT_TYPE_FILE is not handled by GDB */
5976 
5977     case DNTT_TYPE_FUNCTYPE:
5978       /* Function type */
5979       /* Ignored at this level, handled within hpread_type_lookup() */
5980       break;
5981 
5982     case DNTT_TYPE_WITH:
5983       /* This is emitted within methods to indicate "with <class>"
5984        * scoping rules (i.e., indicate that the class data members
5985        * are directly visible).
5986        * However, since GDB already infers this by looking at the
5987        * "this" argument, interpreting the DNTT_TYPE_WITH
5988        * symbol record is unnecessary.
5989        */
5990       break;
5991 
5992     case DNTT_TYPE_COMMON:
5993       /* FORTRAN common. Not yet handled. */
5994       complaint (&symfile_complaints,
5995 		 "unhandled symbol in hp-symtab-read.c: DNTT_TYPE_COMMON.");
5996       break;
5997 
5998       /* DNTT_TYPE_COBSTRUCT is not handled by GDB.  */
5999       /* DNTT_TYPE_XREF is not handled by GDB.  */
6000       /* DNTT_TYPE_SA is not handled by GDB.  */
6001       /* DNTT_TYPE_MACRO is not handled by GDB */
6002 
6003     case DNTT_TYPE_BLOCKDATA:
6004       /* Not sure what this is - part of FORTRAN support maybe?
6005        * Anyway, not yet handled.
6006        */
6007       complaint (&symfile_complaints,
6008 		 "unhandled symbol in hp-symtab-read.c: DNTT_TYPE_BLOCKDATA.");
6009       break;
6010 
6011     case DNTT_TYPE_CLASS_SCOPE:
6012 
6013 
6014 
6015       /* The compiler brackets member functions with a CLASS_SCOPE/END
6016        * pair of records, presumably to put them in a different scope
6017        * from the module scope where they are normally defined.
6018        * E.g., in the situation:
6019        *   void f() { ... }
6020        *   void c::f() { ...}
6021        * The member function "c::f" will be bracketed by a CLASS_SCOPE/END.
6022        * This causes "break f" at the module level to pick the
6023        * the file-level function f(), not the member function
6024        * (which needs to be referenced via "break c::f").
6025        *
6026        * Here we record the class name to generate the demangled names of
6027        * member functions later.
6028        *
6029        * FIXME Not being used now for anything -- cplus_demangle seems
6030        * enough for getting the class-qualified names of functions. We
6031        * may need this for handling nested classes and types.  */
6032 
6033       /* pai: FIXME Not handling nested classes for now -- need to
6034        * maintain a stack */
6035 
6036       dn_temp = hpread_get_lntt (dn_bufp->dclass_scope.type.dnttp.index, objfile);
6037       if (dn_temp->dblock.kind == DNTT_TYPE_TAGDEF)
6038 	class_scope_name = VT (objfile) + dn_temp->dtag.name;
6039       else
6040 	class_scope_name = NULL;
6041 
6042 #if 0
6043 
6044       /* Begin a new scope.  */
6045       SL_INDEX (objfile) = hpread_record_lines (current_subfile,
6046 						SL_INDEX (objfile),
6047 					      dn_bufp->dclass_scope.address,
6048 						objfile, offset);
6049       valu = hpread_get_location (dn_bufp->dclass_scope.address, objfile);
6050       valu += offset;		/* Relocate for dynamic loading */
6051       desc = hpread_get_scope_start (dn_bufp->dclass_scope.address, objfile);
6052       /* We use the scope start DNTT index as the nesting depth identifier! */
6053       new = push_context (desc, valu);
6054 #endif
6055       break;
6056 
6057     case DNTT_TYPE_REFERENCE:
6058       /* Declares a C++ reference type. Should not be necessary to do anything
6059        * with the type at this level; these are processed
6060        * at the hpread_type_lookup() level.
6061        */
6062       break;
6063 
6064     case DNTT_TYPE_PTRMEM:
6065       /* Declares a C++ pointer-to-data-member type. This does not
6066        * need to be handled at this level; being a type description it
6067        * is instead handled at the hpread_type_lookup() level.
6068        */
6069       break;
6070 
6071     case DNTT_TYPE_PTRMEMFUNC:
6072       /* Declares a C++ pointer-to-function-member type. This does not
6073        * need to be handled at this level; being a type description it
6074        * is instead handled at the hpread_type_lookup() level.
6075        */
6076       break;
6077 
6078     case DNTT_TYPE_CLASS:
6079       /* Declares a class type.
6080        * Should not be necessary to do anything
6081        * with the type at this level; these are processed
6082        * at the hpread_type_lookup() level.
6083        */
6084       break;
6085 
6086     case DNTT_TYPE_GENFIELD:
6087       /* I believe this is used for class member functions */
6088       /* Ignored at this level, but hpread_read_struct_type() will take
6089        * care of walking the list of class members.
6090        */
6091       break;
6092 
6093     case DNTT_TYPE_VFUNC:
6094       /* Virtual function */
6095       /* This does not have to be handled at this level; handled in
6096        * the course of processing class symbols.
6097        */
6098       break;
6099 
6100     case DNTT_TYPE_MEMACCESS:
6101       /* DDE ignores this symbol table record.
6102        * It has something to do with "modified access" to class members.
6103        * I'll assume we can safely ignore it too.
6104        */
6105       break;
6106 
6107     case DNTT_TYPE_INHERITANCE:
6108       /* These don't have to be handled here, since they are handled
6109        * within hpread_read_struct_type() in the process of constructing
6110        * a class type.
6111        */
6112       break;
6113 
6114     case DNTT_TYPE_FRIEND_CLASS:
6115     case DNTT_TYPE_FRIEND_FUNC:
6116       /* These can safely be ignored, as GDB doesn't need this
6117        * info. DDE only uses it in "describe". We may later want
6118        * to extend GDB's "ptype" to give this info, but for now
6119        * it seems safe enough to ignore it.
6120        */
6121       break;
6122 
6123     case DNTT_TYPE_MODIFIER:
6124       /* Intended to supply "modified access" to a type */
6125       /* From the way DDE handles this, it looks like it always
6126        * modifies a type. Therefore it is safe to ignore it at this
6127        * level, and handle it in hpread_type_lookup().
6128        */
6129       break;
6130 
6131     case DNTT_TYPE_OBJECT_ID:
6132       /* Just ignore this - that's all DDE does */
6133       break;
6134 
6135     case DNTT_TYPE_MEMFUNC:
6136       /* Member function */
6137       /* This does not have to be handled at this level; handled in
6138        * the course of processing class symbols.
6139        */
6140       break;
6141 
6142     case DNTT_TYPE_DOC_MEMFUNC:
6143       /* Member function */
6144       /* This does not have to be handled at this level; handled in
6145        * the course of processing class symbols.
6146        */
6147       break;
6148 
6149     case DNTT_TYPE_TEMPLATE:
6150       /* Template - sort of the header for a template definition,
6151        * which like a class, points to a member list and also points
6152        * to a TEMPLATE_ARG list of type-arguments.
6153        * We do not need to process TEMPLATE records at this level though.
6154        */
6155       break;
6156 
6157     case DNTT_TYPE_TEMPLATE_ARG:
6158       /* The TEMPLATE record points to an argument list of
6159        * TEMPLATE_ARG records, each of which describes one
6160        * of the type-arguments.
6161        * We do not need to process TEMPLATE_ARG records at this level though.
6162        */
6163       break;
6164 
6165     case DNTT_TYPE_FUNC_TEMPLATE:
6166       /* This will get emitted for member functions of templates.
6167        * But we don't need to process this record at this level though,
6168        * we will process it in the course of processing a TEMPLATE
6169        * record.
6170        */
6171       break;
6172 
6173     case DNTT_TYPE_LINK:
6174       /* The LINK record is used to link up templates with instantiations. */
6175       /* It is not clear why this is needed, and furthermore aCC does
6176        * not appear to generate this, so I think we can safely ignore it. - RT
6177        */
6178       break;
6179 
6180       /* DNTT_TYPE_DYN_ARRAY_DESC is not handled by GDB */
6181       /* DNTT_TYPE_DESC_SUBRANGE is not handled by GDB */
6182       /* DNTT_TYPE_BEGIN_EXT is not handled by GDB */
6183       /* DNTT_TYPE_INLN is not handled by GDB */
6184       /* DNTT_TYPE_INLN_LIST is not handled by GDB */
6185       /* DNTT_TYPE_ALIAS is not handled by GDB */
6186 
6187     default:
6188       break;
6189     }
6190 }
6191 
6192 /* Get nesting depth for a DNTT entry.
6193  * DN_BUFP points to a DNTT entry.
6194  * OBJFILE is the object file.
6195  * REPORT_NESTED is a flag; if 0, real nesting depth is
6196  * reported, if it is 1, the function simply returns a
6197  * non-zero value if the nesting depth is anything > 0.
6198  *
6199  * Return value is an integer.  0 => not a local type / name
6200  * positive return => type or name is local to some
6201  * block or function.
6202  */
6203 
6204 
6205 /* elz: ATTENTION: FIXME: NOTE: WARNING!!!!
6206    this function now returns 0 right away. It was taking too much time
6207    at start up. Now, though, the local types are not handled correctly.
6208  */
6209 
6210 
6211 static int
hpread_get_scope_depth(union dnttentry * dn_bufp,struct objfile * objfile,int report_nested)6212 hpread_get_scope_depth (union dnttentry *dn_bufp, struct objfile *objfile,
6213 			int report_nested)
6214 {
6215   int index;
6216   union dnttentry *dn_tmp;
6217   short depth = 0;
6218 /****************************/
6219   return 0;
6220 /****************************/
6221 
6222   index = (((char *) dn_bufp) - LNTT (objfile)) / (sizeof (struct dntt_type_block));
6223 
6224   while (--index >= 0)
6225     {
6226       dn_tmp = hpread_get_lntt (index, objfile);
6227       switch (dn_tmp->dblock.kind)
6228 	{
6229 	case DNTT_TYPE_MODULE:
6230 	  return depth;
6231 	case DNTT_TYPE_END:
6232 	  /* index is signed int; dnttp.index is 29-bit unsigned int! */
6233 	  index = (int) dn_tmp->dend.beginscope.dnttp.index;
6234 	  break;
6235 	case DNTT_TYPE_BEGIN:
6236 	case DNTT_TYPE_FUNCTION:
6237 	case DNTT_TYPE_DOC_FUNCTION:
6238 	case DNTT_TYPE_WITH:
6239 	case DNTT_TYPE_COMMON:
6240 	case DNTT_TYPE_CLASS_SCOPE:
6241 	  depth++;
6242 	  if (report_nested)
6243 	    return 1;
6244 	  break;
6245 	default:
6246 	  break;
6247 	}
6248     }
6249   return depth;
6250 }
6251 
6252 /* Adjust the bitoffsets for all fields of an anonymous union of
6253    type TYPE by negative BITS.  This handles HP aCC's hideous habit
6254    of giving members of anonymous unions bit offsets relative to the
6255    enclosing structure instead of relative to the union itself. */
6256 
6257 static void
hpread_adjust_bitoffsets(struct type * type,int bits)6258 hpread_adjust_bitoffsets (struct type *type, int bits)
6259 {
6260   int i;
6261 
6262   /* This is done only for unions; caller had better check that
6263      it is an anonymous one. */
6264   if (TYPE_CODE (type) != TYPE_CODE_UNION)
6265     return;
6266 
6267   /* Adjust each field; since this is a union, there are no base
6268      classes. Also no static membes.  Also, no need for recursion as
6269      the members of this union if themeselves structs or unions, have
6270      the correct bitoffsets; if an anonymous union is a member of this
6271      anonymous union, the code in hpread_read_struct_type() will
6272      adjust for that. */
6273 
6274   for (i = 0; i < TYPE_NFIELDS (type); i++)
6275     TYPE_FIELD_BITPOS (type, i) -= bits;
6276 }
6277 
6278 /* Return the adjustment necessary to make for addresses on the stack
6279    as presented by hpread.c.
6280 
6281    This is necessary because of the stack direction on the PA and the
6282    bizarre way in which someone (?) decided they wanted to handle
6283    frame pointerless code in GDB.  */
6284 int
hpread_adjust_stack_address(CORE_ADDR func_addr)6285 hpread_adjust_stack_address (CORE_ADDR func_addr)
6286 {
6287   struct unwind_table_entry *u;
6288 
6289   u = find_unwind_entry (func_addr);
6290   if (!u)
6291     return 0;
6292   else
6293     return u->Total_frame_size << 3;
6294 }
6295 
6296 /* Because of quirks in HP compilers' treatment of anonymous unions inside
6297    classes, we have to chase through a chain of threaded FIELD entries.
6298    If we encounter an anonymous union in the chain, we must recursively skip over
6299    that too.
6300 
6301    This function does a "next" in the chain of FIELD entries, but transparently
6302    skips over anonymous unions' fields (recursively).
6303 
6304    Inputs are the number of times to do "next" at the top level, the dnttpointer
6305    (FIELD) and entry pointer (FIELDP) for the dntt record corresponding to it,
6306    and the ubiquitous objfile parameter. (Note: FIELDP is a **.)  Return value
6307    is a dnttpointer for the new field after all the skipped ones */
6308 
6309 static dnttpointer
hpread_get_next_skip_over_anon_unions(int skip_fields,dnttpointer field,union dnttentry ** fieldp,struct objfile * objfile)6310 hpread_get_next_skip_over_anon_unions (int skip_fields, dnttpointer field,
6311 				       union dnttentry **fieldp,
6312 				       struct objfile *objfile)
6313 {
6314   struct type *anon_type;
6315   int i;
6316   int bitoffset;
6317   char *name;
6318 
6319   for (i = 0; i < skip_fields; i++)
6320     {
6321       /* Get type of item we're looking at now; recursively processes the types
6322          of these intermediate items we skip over, so they aren't lost. */
6323       anon_type = hpread_type_lookup ((*fieldp)->dfield.type, objfile);
6324       anon_type = CHECK_TYPEDEF (anon_type);
6325       bitoffset = (*fieldp)->dfield.bitoffset;
6326       name = VT (objfile) + (*fieldp)->dfield.name;
6327       /* First skip over one item to avoid stack death on recursion */
6328       field = (*fieldp)->dfield.nextfield;
6329       *fieldp = hpread_get_lntt (field.dnttp.index, objfile);
6330       /* Do we have another anonymous union? If so, adjust the bitoffsets
6331          of its members and skip over its members. */
6332       if ((TYPE_CODE (anon_type) == TYPE_CODE_UNION) &&
6333 	  (!name || DEPRECATED_STREQ (name, "")))
6334 	{
6335 	  hpread_adjust_bitoffsets (anon_type, bitoffset);
6336 	  field = hpread_get_next_skip_over_anon_unions (TYPE_NFIELDS (anon_type), field, fieldp, objfile);
6337 	}
6338     }
6339   return field;
6340 }
6341