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be9618de | 1 | /* vms.c -- Write out a VAX/VMS object file |
a9918088 | 2 | Copyright (C) 1987, 1988, 1992, 1994 Free Software Foundation, Inc. |
be9618de KR |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Written by David L. Kashtan */ | |
21 | /* Modified by Eric Youngdale to write VMS debug records for program | |
22 | variables */ | |
23 | #include "as.h" | |
db4e0f90 | 24 | #include "config.h" |
be9618de KR |
25 | #include "subsegs.h" |
26 | #include "obstack.h" | |
27 | ||
28 | /* What we do if there is a goof. */ | |
29 | #define error as_fatal | |
30 | ||
b9419dd2 | 31 | #ifdef VMS /* These are of no use if we are cross assembling. */ |
be9618de KR |
32 | #include <fab.h> /* Define File Access Block */ |
33 | #include <nam.h> /* Define NAM Block */ | |
34 | #include <xab.h> /* Define XAB - all different types*/ | |
35 | #endif | |
36 | /* | |
37 | * Version string of the compiler that produced the code we are | |
38 | * assembling. (And this assembler, if we do not have compiler info.) | |
39 | */ | |
be9618de KR |
40 | char *compiler_version_string; |
41 | ||
def66e24 DM |
42 | extern int flag_hash_long_names; /* -+ */ |
43 | extern int flag_one; /* -1 */ | |
44 | extern int flag_show_after_trunc; /* -H */ | |
45 | extern int flag_no_hash_mixed_case; /* -h NUM */ | |
46 | ||
be9618de KR |
47 | /* Flag that determines how we map names. This takes several values, and |
48 | * is set with the -h switch. A value of zero implies names should be | |
49 | * upper case, and the presence of the -h switch inhibits the case hack. | |
50 | * No -h switch at all sets vms_name_mapping to 0, and allows case hacking. | |
51 | * A value of 2 (set with -h2) implies names should be | |
52 | * all lower case, with no case hack. A value of 3 (set with -h3) implies | |
53 | * that case should be preserved. */ | |
54 | ||
55 | /* If the -+ switch is given, then the hash is appended to any name that is | |
56 | * longer than 31 characters, irregardless of the setting of the -h switch. | |
57 | */ | |
58 | ||
59 | char vms_name_mapping = 0; | |
60 | ||
be9618de KR |
61 | extern char *myname; |
62 | static symbolS *Entry_Point_Symbol = 0; /* Pointer to "_main" */ | |
63 | ||
64 | /* | |
65 | * We augment the "gas" symbol structure with this | |
66 | */ | |
67 | struct VMS_Symbol | |
68 | { | |
69 | struct VMS_Symbol *Next; | |
70 | struct symbol *Symbol; | |
71 | int Size; | |
72 | int Psect_Index; | |
73 | int Psect_Offset; | |
74 | }; | |
75 | struct VMS_Symbol *VMS_Symbols = 0; | |
76 | ||
77 | /* We need this to keep track of the various input files, so that we can | |
78 | * give the debugger the correct source line. | |
79 | */ | |
80 | ||
81 | struct input_file | |
82 | { | |
83 | struct input_file *next; | |
84 | struct input_file *same_file_fpnt; | |
85 | int file_number; | |
86 | int max_line; | |
87 | int min_line; | |
88 | int offset; | |
89 | char flag; | |
90 | char *name; | |
91 | symbolS *spnt; | |
92 | }; | |
93 | ||
94 | static struct input_file *file_root = (struct input_file *) NULL; | |
95 | ||
96 | ||
1f624b21 | 97 | static struct input_file *find_file PARAMS ((symbolS *)); |
be9618de KR |
98 | |
99 | /* | |
100 | * This enum is used to keep track of the various types of variables that | |
101 | * may be present. | |
102 | */ | |
103 | ||
104 | enum advanced_type | |
105 | { | |
494a6c05 | 106 | BASIC, POINTER, ARRAY, ENUM, STRUCT, UNION, FUNCTION, VOID, ALIAS, UNKNOWN |
be9618de KR |
107 | }; |
108 | ||
109 | /* | |
110 | * This structure contains the information from the stabs directives, and the | |
111 | * information is filled in by VMS_typedef_parse. Everything that is needed | |
112 | * to generate the debugging record for a given symbol is present here. | |
113 | * This could be done more efficiently, using nested struct/unions, but for now | |
114 | * I am happy that it works. | |
115 | */ | |
116 | struct VMS_DBG_Symbol | |
117 | { | |
118 | struct VMS_DBG_Symbol *next; | |
54f10da0 KR |
119 | /* description of what this is */ |
120 | enum advanced_type advanced; | |
121 | /* this record is for this type */ | |
122 | int dbx_type; | |
123 | /* For advanced types this is the type referred to. I.e., the type | |
124 | a pointer points to, or the type of object that makes up an | |
125 | array. */ | |
126 | int type2; | |
127 | /* Use this type when generating a variable def */ | |
128 | int VMS_type; | |
129 | /* used for arrays - this will be present for all */ | |
130 | int index_min; | |
131 | /* entries, but will be meaningless for non-arrays */ | |
132 | int index_max; | |
133 | /* Size in bytes of the data type. For an array, this is the size | |
134 | of one element in the array */ | |
135 | int data_size; | |
136 | /* Number of the structure/union/enum - used for ref */ | |
137 | int struc_numb; | |
be9618de KR |
138 | }; |
139 | ||
54f10da0 | 140 | struct VMS_DBG_Symbol *VMS_Symbol_type_list; |
be9618de KR |
141 | |
142 | /* | |
143 | * We need this structure to keep track of forward references to | |
144 | * struct/union/enum that have not been defined yet. When they are ultimately | |
145 | * defined, then we can go back and generate the TIR commands to make a back | |
146 | * reference. | |
147 | */ | |
148 | ||
149 | struct forward_ref | |
150 | { | |
151 | struct forward_ref *next; | |
152 | int dbx_type; | |
153 | int struc_numb; | |
154 | char resolved; | |
155 | }; | |
156 | ||
157 | struct forward_ref *f_ref_root = | |
158 | {(struct forward_ref *) NULL}; | |
159 | ||
160 | /* | |
161 | * This routine is used to compare the names of certain types to various | |
162 | * fixed types that are known by the debugger. | |
163 | */ | |
164 | #define type_check(x) !strcmp( symbol_name , x ) | |
165 | ||
166 | /* | |
167 | * This variable is used to keep track of the name of the symbol we are | |
168 | * working on while we are parsing the stabs directives. | |
169 | */ | |
170 | static char *symbol_name; | |
171 | ||
172 | /* We use this counter to assign numbers to all of the structures, unions | |
173 | * and enums that we define. When we actually declare a variable to the | |
174 | * debugger, we can simply do it by number, rather than describing the | |
175 | * whole thing each time. | |
176 | */ | |
177 | ||
178 | static structure_count = 0; | |
179 | ||
494a6c05 KR |
180 | /* This variable is used to indicate that we are making the last attempt to |
181 | parse the stabs, and that we should define as much as we can, and ignore | |
182 | the rest */ | |
183 | ||
184 | static int final_pass; | |
185 | ||
be9618de KR |
186 | /* This variable is used to keep track of the current structure number |
187 | * for a given variable. If this is < 0, that means that the structure | |
188 | * has not yet been defined to the debugger. This is still cool, since | |
189 | * the VMS object language has ways of fixing things up after the fact, | |
190 | * so we just make a note of this, and generate fixups at the end. | |
191 | */ | |
192 | static int struct_number; | |
193 | ||
a9918088 KR |
194 | /* This is used to distinguish between D_float and G_float for telling |
195 | the debugger about doubles. gcc outputs the same .stabs regardless | |
196 | of whether -mg is used to select alternate doubles. */ | |
197 | ||
198 | static int vax_g_doubles = 0; | |
199 | ||
be9618de KR |
200 | |
201 | /* | |
202 | * Variable descriptors are used tell the debugger the data types of certain | |
203 | * more complicated variables (basically anything involving a structure, | |
204 | * union, enum, array or pointer). Some non-pointer variables of the | |
205 | * basic types that the debugger knows about do not require a variable | |
206 | * descriptor. | |
207 | * | |
208 | * Since it is impossible to have a variable descriptor longer than 128 | |
209 | * bytes by virtue of the way that the VMS object language is set up, | |
210 | * it makes not sense to make the arrays any longer than this, or worrying | |
211 | * about dynamic sizing of the array. | |
212 | * | |
213 | * These are the arrays and counters that we use to build a variable | |
214 | * descriptor. | |
215 | */ | |
216 | ||
217 | #define MAX_DEBUG_RECORD 128 | |
218 | static char Local[MAX_DEBUG_RECORD]; /* buffer for variable descriptor */ | |
219 | static char Asuffix[MAX_DEBUG_RECORD]; /* buffer for array descriptor */ | |
220 | static int Lpnt; /* index into Local */ | |
221 | static int Apoint; /* index into Asuffix */ | |
222 | static char overflow; /* flag to indicate we have written too much*/ | |
223 | static int total_len; /* used to calculate the total length of variable | |
224 | descriptor plus array descriptor - used for len byte*/ | |
225 | ||
226 | /* Flag if we have told user about finding global constants in the text | |
227 | section. */ | |
228 | static gave_compiler_message = 0; | |
229 | ||
230 | /* A pointer to the current routine that we are working on. */ | |
231 | ||
232 | static symbolS *Current_Routine; | |
233 | ||
234 | /* The psect number for $code a.k.a. the text section. */ | |
235 | ||
236 | static int Text_Psect; | |
237 | ||
238 | ||
239 | /* | |
240 | * Global data (Object records limited to 512 bytes by VAX-11 "C" runtime) | |
241 | */ | |
242 | static int VMS_Object_File_FD; /* File Descriptor for object file */ | |
243 | static char Object_Record_Buffer[512]; /* Buffer for object file records */ | |
244 | static int Object_Record_Offset;/* Offset to end of data */ | |
245 | static int Current_Object_Record_Type; /* Type of record in above */ | |
246 | ||
494a6c05 KR |
247 | /* |
248 | * Macros for moving data around. Must work on big-endian systems. | |
249 | */ | |
b9419dd2 | 250 | #ifdef VMS /* These are more efficient for VMS->VMS systems */ |
494a6c05 KR |
251 | #define COPY_LONG(dest,val) {*(long *) dest = val; } |
252 | #define COPY_SHORT(dest,val) {*(short *) dest = val; } | |
253 | #else | |
254 | #define COPY_LONG(dest,val) { md_number_to_chars(dest, val, 4); } | |
255 | #define COPY_SHORT(dest,val) { md_number_to_chars(dest, val, 2); } | |
256 | #endif | |
be9618de KR |
257 | /* |
258 | * Macros for placing data into the object record buffer | |
259 | */ | |
260 | ||
261 | #define PUT_LONG(val) \ | |
262 | { md_number_to_chars(Object_Record_Buffer + \ | |
263 | Object_Record_Offset, val, 4); \ | |
264 | Object_Record_Offset += 4; } | |
265 | ||
266 | #define PUT_SHORT(val) \ | |
267 | { md_number_to_chars(Object_Record_Buffer + \ | |
268 | Object_Record_Offset, val, 2); \ | |
269 | Object_Record_Offset += 2; } | |
270 | ||
271 | #define PUT_CHAR(val) Object_Record_Buffer[Object_Record_Offset++] = val | |
272 | ||
273 | #define PUT_COUNTED_STRING(cp) {\ | |
274 | register char *p = cp; \ | |
275 | PUT_CHAR(strlen(p)); \ | |
276 | while (*p) PUT_CHAR(*p++);} | |
277 | ||
278 | /* | |
279 | * Macro for determining if a Name has psect attributes attached | |
280 | * to it. | |
281 | */ | |
282 | #define PSECT_ATTRIBUTES_STRING "$$PsectAttributes_" | |
283 | #define PSECT_ATTRIBUTES_STRING_LENGTH 18 | |
284 | ||
285 | #define HAS_PSECT_ATTRIBUTES(Name) \ | |
286 | (strncmp((Name[0] == '_' ? Name + 1 : Name), \ | |
287 | PSECT_ATTRIBUTES_STRING, \ | |
288 | PSECT_ATTRIBUTES_STRING_LENGTH) == 0) | |
289 | \f | |
290 | ||
291 | /* in: segT out: N_TYPE bits */ | |
292 | const short seg_N_TYPE[] = | |
293 | { | |
294 | N_ABS, | |
295 | N_TEXT, | |
296 | N_DATA, | |
297 | N_BSS, | |
298 | N_UNDF, /* unknown */ | |
be9618de | 299 | N_UNDF, /* error */ |
5ac34ac3 | 300 | N_UNDF, /* expression */ |
be9618de KR |
301 | N_UNDF, /* debug */ |
302 | N_UNDF, /* ntv */ | |
303 | N_UNDF, /* ptv */ | |
304 | N_REGISTER, /* register */ | |
305 | }; | |
306 | ||
307 | const segT N_TYPE_seg[N_TYPE + 2] = | |
308 | { /* N_TYPE == 0x1E = 32-2 */ | |
309 | SEG_UNKNOWN, /* N_UNDF == 0 */ | |
310 | SEG_GOOF, | |
311 | SEG_ABSOLUTE, /* N_ABS == 2 */ | |
312 | SEG_GOOF, | |
313 | SEG_TEXT, /* N_TEXT == 4 */ | |
314 | SEG_GOOF, | |
315 | SEG_DATA, /* N_DATA == 6 */ | |
316 | SEG_GOOF, | |
317 | SEG_BSS, /* N_BSS == 8 */ | |
318 | SEG_GOOF, | |
319 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
320 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
321 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
322 | SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ | |
323 | SEG_GOOF, | |
324 | }; | |
325 | \f | |
326 | ||
327 | /* The following code defines the special types of pseudo-ops that we | |
328 | * use with VMS. | |
329 | */ | |
330 | ||
a9918088 | 331 | char const_flag = IN_DEFAULT_SECTION; |
be9618de KR |
332 | |
333 | void | |
334 | s_const () | |
335 | { | |
336 | register int temp; | |
337 | ||
338 | temp = get_absolute_expression (); | |
604633ae | 339 | subseg_set (SEG_DATA, (subsegT) temp); |
be9618de KR |
340 | const_flag = 1; |
341 | demand_empty_rest_of_line (); | |
342 | } | |
343 | ||
be9618de KR |
344 | const pseudo_typeS obj_pseudo_table[] = |
345 | { | |
be9618de KR |
346 | {"const", s_const, 0}, |
347 | {0, 0, 0}, | |
be9618de KR |
348 | }; /* obj_pseudo_table */ |
349 | ||
db4e0f90 KR |
350 | int |
351 | vms_resolve_symbol_redef (sym) | |
352 | symbolS *sym; | |
353 | { | |
354 | /* | |
355 | * If the new symbol is .comm AND it has a size of zero, | |
356 | * we ignore it (i.e. the old symbol overrides it) | |
357 | */ | |
358 | if ((SEGMENT_TO_SYMBOL_TYPE ((int) now_seg) == (N_UNDF | N_EXT)) && | |
359 | ((obstack_next_free (&frags) - frag_now->fr_literal) == 0)) | |
360 | { | |
361 | as_warn ("compiler emitted zero-size common symbol `%s' already defined", | |
362 | S_GET_NAME (sym)); | |
363 | return 1; | |
364 | } | |
365 | /* | |
366 | * If the old symbol is .comm and it has a size of zero, | |
367 | * we override it with the new symbol value. | |
368 | */ | |
369 | if (S_IS_EXTERNAL(sym) && S_IS_DEFINED(sym) | |
370 | && (S_GET_VALUE(sym) == 0)) | |
371 | { | |
372 | as_warn ("compiler redefined zero-size common symbol `%s'", | |
373 | S_GET_NAME (sym)); | |
374 | sym->sy_frag = frag_now; | |
a9918088 | 375 | S_SET_OTHER(sym, const_flag); |
db4e0f90 KR |
376 | S_SET_VALUE(sym, obstack_next_free(& frags) - frag_now->fr_literal); |
377 | /* Keep N_EXT bit. */ | |
378 | sym->sy_symbol.n_type |= SEGMENT_TO_SYMBOL_TYPE((int) now_seg); | |
379 | return 1; | |
380 | } | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
a9918088 KR |
385 | /* `tc_frob_label' handler for colon(symbols.c), used to examine the |
386 | dummy label(s) gcc inserts at the beginning of each file it generates. | |
387 | gcc 1.x put "gcc_compiled."; gcc 2.x (as of 2.6) puts "gcc2_compiled." | |
388 | and "__gnu_language_<name>" and possibly "__vax_<type>_doubles". */ | |
389 | ||
390 | void | |
391 | vms_check_for_special_label (symbolP) | |
392 | symbolS *symbolP; | |
393 | { | |
394 | /* Special labels only occur prior to explicit section directives. */ | |
395 | if ((const_flag & IN_DEFAULT_SECTION) != 0) | |
396 | { | |
397 | char *sym_name = S_GET_NAME(symbolP); | |
398 | ||
399 | if (*sym_name == '_') | |
400 | ++sym_name; | |
401 | ||
402 | if (!strcmp (sym_name, "__vax_g_doubles")) | |
403 | vax_g_doubles = 1; | |
404 | #if 0 /* not necessary */ | |
405 | else if (!strcmp (sym_name, "__vax_d_doubles")) | |
406 | vax_g_doubles = 0; | |
407 | #endif | |
408 | #if 0 /* these are potential alternatives to tc-vax.c's md_parse_options() */ | |
409 | else if (!strcmp (sym_name, "gcc_compiled.")) | |
410 | flag_one = 1; | |
411 | else if (!strcmp (sym_name, "__gnu_language_cplusplus")) | |
412 | flag_hash_long_names = 1; | |
413 | #endif | |
414 | } | |
415 | return; | |
416 | } | |
db4e0f90 | 417 | |
be9618de KR |
418 | void |
419 | obj_read_begin_hook () | |
420 | { | |
c999fd9f | 421 | } |
be9618de KR |
422 | |
423 | void | |
424 | obj_crawl_symbol_chain (headers) | |
425 | object_headers *headers; | |
426 | { | |
427 | symbolS *symbolP; | |
428 | symbolS **symbolPP; | |
429 | int symbol_number = 0; | |
430 | ||
be9618de KR |
431 | { /* crawl symbol table */ |
432 | register int symbol_number = 0; | |
433 | ||
434 | { | |
435 | symbolPP = &symbol_rootP; /* -> last symbol chain link. */ | |
436 | while ((symbolP = *symbolPP) != NULL) | |
437 | { | |
5868b1fe | 438 | resolve_symbol_value (symbolP); |
be9618de KR |
439 | |
440 | /* OK, here is how we decide which symbols go out into the | |
441 | brave new symtab. Symbols that do are: | |
442 | ||
443 | * symbols with no name (stabd's?) | |
444 | * symbols with debug info in their N_TYPE | |
445 | ||
446 | Symbols that don't are: | |
447 | * symbols that are registers | |
448 | * symbols with \1 as their 3rd character (numeric labels) | |
449 | * "local labels" as defined by S_LOCAL_NAME(name) | |
450 | if the -L switch was passed to gas. | |
451 | ||
452 | All other symbols are output. We complain if a deleted | |
453 | symbol was marked external. */ | |
454 | ||
455 | ||
456 | if (!S_IS_REGISTER (symbolP)) | |
457 | { | |
458 | symbolP->sy_name_offset = 0; | |
459 | symbolPP = &(symbol_next (symbolP)); | |
460 | } | |
461 | else | |
462 | { | |
463 | if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) | |
464 | { | |
465 | as_bad ("Local symbol %s never defined", S_GET_NAME (symbolP)); | |
466 | } /* oops. */ | |
467 | ||
468 | } /* if this symbol should be in the output */ | |
469 | } /* for each symbol */ | |
470 | } | |
471 | H_SET_STRING_SIZE (headers, string_byte_count); | |
472 | H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); | |
473 | } /* crawl symbol table */ | |
474 | ||
475 | } /* obj_crawl_symbol_chain() */ | |
476 | \f | |
477 | ||
478 | /****** VMS OBJECT FILE HACKING ROUTINES *******/ | |
479 | ||
480 | ||
481 | /* | |
482 | * Create the VMS object file | |
483 | */ | |
484 | static | |
485 | Create_VMS_Object_File () | |
486 | { | |
b9419dd2 | 487 | #if defined(eunice) || !defined(VMS) |
be9618de KR |
488 | VMS_Object_File_FD = creat (out_file_name, 0777, "var"); |
489 | #else /* eunice */ | |
490 | VMS_Object_File_FD = creat (out_file_name, 0, "rfm=var", | |
491 | "mbc=16", "deq=64", "fop=tef", "shr=nil"); | |
492 | #endif /* eunice */ | |
493 | /* | |
494 | * Deal with errors | |
495 | */ | |
496 | if (VMS_Object_File_FD < 0) | |
497 | { | |
498 | char Error_Line[256]; | |
499 | ||
500 | sprintf (Error_Line, "Couldn't create VMS object file \"%s\"", | |
501 | out_file_name); | |
502 | error (Error_Line); | |
503 | } | |
504 | /* | |
505 | * Initialize object file hacking variables | |
506 | */ | |
507 | Object_Record_Offset = 0; | |
508 | Current_Object_Record_Type = -1; | |
509 | } | |
510 | \f | |
511 | ||
512 | /* | |
513 | * Flush the object record buffer to the object file | |
514 | */ | |
515 | static | |
516 | Flush_VMS_Object_Record_Buffer () | |
517 | { | |
518 | int i; | |
519 | short int zero; | |
494a6c05 | 520 | int RecLen; |
be9618de KR |
521 | /* |
522 | * If the buffer is empty, we are done | |
523 | */ | |
524 | if (Object_Record_Offset == 0) | |
525 | return; | |
526 | /* | |
527 | * Write the data to the file | |
528 | */ | |
b9419dd2 | 529 | #ifndef VMS /* For cross-assembly purposes. */ |
494a6c05 KR |
530 | md_number_to_chars((char *) &RecLen, Object_Record_Offset, 2); |
531 | i = write (VMS_Object_File_FD, &RecLen, 2); | |
b9419dd2 | 532 | #endif /* not VMS */ |
be9618de KR |
533 | i = write (VMS_Object_File_FD, |
534 | Object_Record_Buffer, | |
535 | Object_Record_Offset); | |
536 | if (i != Object_Record_Offset) | |
537 | error ("I/O error writing VMS object file"); | |
b9419dd2 | 538 | #ifndef VMS /* When cross-assembling, we need to pad the record to an even |
be9618de KR |
539 | number of bytes. */ |
540 | /* pad it if needed */ | |
541 | zero = 0; | |
542 | if (Object_Record_Offset & 1 != 0) | |
543 | write (VMS_Object_File_FD, &zero, 1); | |
b9419dd2 | 544 | #endif /* not VMS */ |
be9618de KR |
545 | /* |
546 | * The buffer is now empty | |
547 | */ | |
548 | Object_Record_Offset = 0; | |
549 | } | |
550 | \f | |
551 | ||
552 | /* | |
553 | * Declare a particular type of object file record | |
554 | */ | |
555 | static | |
556 | Set_VMS_Object_File_Record (Type) | |
557 | int Type; | |
558 | { | |
559 | /* | |
560 | * If the type matches, we are done | |
561 | */ | |
562 | if (Type == Current_Object_Record_Type) | |
563 | return; | |
564 | /* | |
565 | * Otherwise: flush the buffer | |
566 | */ | |
567 | Flush_VMS_Object_Record_Buffer (); | |
568 | /* | |
569 | * Set the new type | |
570 | */ | |
571 | Current_Object_Record_Type = Type; | |
572 | } | |
573 | \f | |
574 | ||
575 | ||
576 | /* | |
577 | * Close the VMS Object file | |
578 | */ | |
579 | static | |
580 | Close_VMS_Object_File () | |
581 | { | |
582 | short int m_one = -1; | |
c17f4666 KR |
583 | /* @@ This should not be here!! The same would presumably be needed |
584 | if we were writing vax-bsd a.out files on a vms system. Put it | |
585 | someplace else! */ | |
b9419dd2 | 586 | #ifndef VMS /* For cross-assembly purposes. */ |
be9618de KR |
587 | /* Write a 0xffff into the file, which means "End of File" */ |
588 | write (VMS_Object_File_FD, &m_one, 2); | |
b9419dd2 | 589 | #endif /* not VMS */ |
be9618de KR |
590 | close (VMS_Object_File_FD); |
591 | } | |
592 | \f | |
593 | ||
594 | /* | |
595 | * Store immediate data in current Psect | |
596 | */ | |
597 | static | |
598 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type) | |
1f624b21 | 599 | CONST char *Pointer; |
be9618de KR |
600 | int Size; |
601 | int Record_Type; | |
602 | { | |
603 | register int i; | |
604 | ||
605 | /* | |
606 | * We are writing a "Record_Type" record | |
607 | */ | |
608 | Set_VMS_Object_File_Record (Record_Type); | |
609 | /* | |
610 | * We can only store 128 bytes at a time | |
611 | */ | |
612 | while (Size > 0) | |
613 | { | |
614 | /* | |
615 | * Store a maximum of 128 bytes | |
616 | */ | |
617 | i = (Size > 128) ? 128 : Size; | |
618 | Size -= i; | |
619 | /* | |
620 | * If we cannot accommodate this record, flush the | |
621 | * buffer. | |
622 | */ | |
623 | if ((Object_Record_Offset + i + 1) >= | |
624 | sizeof (Object_Record_Buffer)) | |
625 | Flush_VMS_Object_Record_Buffer (); | |
626 | /* | |
627 | * If the buffer is empty we must insert record type | |
628 | */ | |
629 | if (Object_Record_Offset == 0) | |
630 | PUT_CHAR (Record_Type); | |
631 | /* | |
632 | * Store the count | |
633 | */ | |
634 | PUT_CHAR (-i & 0xff); | |
635 | /* | |
636 | * Store the data | |
637 | */ | |
638 | while (--i >= 0) | |
639 | PUT_CHAR (*Pointer++); | |
640 | /* | |
641 | * Flush the buffer if it is more than 75% full | |
642 | */ | |
643 | if (Object_Record_Offset > | |
644 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
645 | Flush_VMS_Object_Record_Buffer (); | |
646 | } | |
647 | } | |
648 | ||
649 | /* | |
650 | * Make a data reference | |
651 | */ | |
652 | static | |
653 | VMS_Set_Data (Psect_Index, Offset, Record_Type, Force) | |
654 | int Psect_Index; | |
655 | int Offset; | |
656 | int Record_Type; | |
657 | int Force; | |
658 | { | |
659 | /* | |
660 | * We are writing a "Record_Type" record | |
661 | */ | |
662 | Set_VMS_Object_File_Record (Record_Type); | |
663 | /* | |
664 | * If the buffer is empty we must insert the record type | |
665 | */ | |
666 | if (Object_Record_Offset == 0) | |
667 | PUT_CHAR (Record_Type); | |
668 | /* | |
669 | * Stack the Psect base + Longword Offset | |
670 | */ | |
671 | if (Force == 1) | |
672 | { | |
673 | if (Psect_Index > 127) | |
674 | { | |
675 | PUT_CHAR (TIR_S_C_STA_WPL); | |
676 | PUT_SHORT (Psect_Index); | |
677 | PUT_LONG (Offset); | |
678 | } | |
679 | else | |
680 | { | |
681 | PUT_CHAR (TIR_S_C_STA_PL); | |
682 | PUT_CHAR (Psect_Index); | |
683 | PUT_LONG (Offset); | |
684 | } | |
685 | } | |
686 | else | |
687 | { | |
688 | if (Offset > 32767) | |
689 | { | |
690 | PUT_CHAR (TIR_S_C_STA_WPL); | |
691 | PUT_SHORT (Psect_Index); | |
692 | PUT_LONG (Offset); | |
693 | } | |
694 | else if (Offset > 127) | |
695 | { | |
696 | PUT_CHAR (TIR_S_C_STA_WPW); | |
697 | PUT_SHORT (Psect_Index); | |
698 | PUT_SHORT (Offset); | |
699 | } | |
700 | else | |
701 | { | |
702 | PUT_CHAR (TIR_S_C_STA_WPB); | |
703 | PUT_SHORT (Psect_Index); | |
704 | PUT_CHAR (Offset); | |
c06e55d9 KR |
705 | } |
706 | } | |
be9618de KR |
707 | /* |
708 | * Set relocation base | |
709 | */ | |
710 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
711 | /* | |
712 | * Flush the buffer if it is more than 75% full | |
713 | */ | |
714 | if (Object_Record_Offset > | |
715 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
716 | Flush_VMS_Object_Record_Buffer (); | |
717 | } | |
718 | ||
719 | /* | |
720 | * Make a debugger reference to a struct, union or enum. | |
721 | */ | |
722 | static | |
db4e0f90 KR |
723 | VMS_Store_Struct (Struct_Index) |
724 | int Struct_Index; | |
be9618de KR |
725 | { |
726 | /* | |
727 | * We are writing a "OBJ_S_C_DBG" record | |
728 | */ | |
729 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
730 | /* | |
731 | * If the buffer is empty we must insert the record type | |
732 | */ | |
733 | if (Object_Record_Offset == 0) | |
734 | PUT_CHAR (OBJ_S_C_DBG); | |
735 | PUT_CHAR (TIR_S_C_STA_UW); | |
736 | PUT_SHORT (Struct_Index); | |
737 | PUT_CHAR (TIR_S_C_CTL_STKDL); | |
738 | PUT_CHAR (TIR_S_C_STO_L); | |
739 | /* | |
740 | * Flush the buffer if it is more than 75% full | |
741 | */ | |
742 | if (Object_Record_Offset > | |
743 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
744 | Flush_VMS_Object_Record_Buffer (); | |
745 | } | |
746 | ||
747 | /* | |
748 | * Make a debugger reference to partially define a struct, union or enum. | |
749 | */ | |
750 | static | |
db4e0f90 KR |
751 | VMS_Def_Struct (Struct_Index) |
752 | int Struct_Index; | |
be9618de KR |
753 | { |
754 | /* | |
755 | * We are writing a "OBJ_S_C_DBG" record | |
756 | */ | |
757 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
758 | /* | |
759 | * If the buffer is empty we must insert the record type | |
760 | */ | |
761 | if (Object_Record_Offset == 0) | |
762 | PUT_CHAR (OBJ_S_C_DBG); | |
763 | PUT_CHAR (TIR_S_C_STA_UW); | |
764 | PUT_SHORT (Struct_Index); | |
765 | PUT_CHAR (TIR_S_C_CTL_DFLOC); | |
766 | /* | |
767 | * Flush the buffer if it is more than 75% full | |
768 | */ | |
769 | if (Object_Record_Offset > | |
770 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
771 | Flush_VMS_Object_Record_Buffer (); | |
772 | } | |
773 | ||
774 | static | |
db4e0f90 KR |
775 | VMS_Set_Struct (Struct_Index) |
776 | int Struct_Index; | |
be9618de KR |
777 | { /* see previous functions for comments */ |
778 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
779 | if (Object_Record_Offset == 0) | |
780 | PUT_CHAR (OBJ_S_C_DBG); | |
781 | PUT_CHAR (TIR_S_C_STA_UW); | |
782 | PUT_SHORT (Struct_Index); | |
783 | PUT_CHAR (TIR_S_C_CTL_STLOC); | |
784 | if (Object_Record_Offset > | |
785 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
786 | Flush_VMS_Object_Record_Buffer (); | |
787 | } | |
788 | \f | |
789 | /* | |
790 | * Write the Traceback Module Begin record | |
791 | */ | |
792 | static | |
793 | VMS_TBT_Module_Begin () | |
794 | { | |
795 | register char *cp, *cp1; | |
796 | int Size; | |
797 | char Module_Name[256]; | |
798 | char Local[256]; | |
799 | ||
800 | /* | |
801 | * Get module name (the FILENAME part of the object file) | |
802 | */ | |
803 | cp = out_file_name; | |
804 | cp1 = Module_Name; | |
805 | while (*cp) | |
806 | { | |
807 | if ((*cp == ']') || (*cp == '>') || | |
808 | (*cp == ':') || (*cp == '/')) | |
809 | { | |
810 | cp1 = Module_Name; | |
811 | cp++; | |
812 | continue; | |
813 | } | |
814 | *cp1++ = islower (*cp) ? toupper (*cp++) : *cp++; | |
815 | } | |
816 | *cp1 = 0; | |
817 | /* | |
818 | * Limit it to 31 characters | |
819 | */ | |
820 | while (--cp1 >= Module_Name) | |
821 | if (*cp1 == '.') | |
822 | *cp1 = 0; | |
823 | if (strlen (Module_Name) > 31) | |
824 | { | |
def66e24 | 825 | if (flag_hash_long_names) |
be9618de KR |
826 | printf ("%s: Module name truncated: %s\n", myname, Module_Name); |
827 | Module_Name[31] = 0; | |
828 | } | |
829 | /* | |
830 | * Arrange to store the data locally (leave room for size byte) | |
831 | */ | |
832 | cp = Local + 1; | |
833 | /* | |
834 | * Begin module | |
835 | */ | |
836 | *cp++ = DST_S_C_MODBEG; | |
837 | /* | |
838 | * Unused | |
839 | */ | |
840 | *cp++ = 0; | |
841 | /* | |
842 | * Language type == "C" | |
843 | */ | |
494a6c05 | 844 | COPY_LONG (cp, DST_S_C_C); |
be9618de KR |
845 | cp += sizeof (long); |
846 | /* | |
847 | * Store the module name | |
848 | */ | |
849 | *cp++ = strlen (Module_Name); | |
850 | cp1 = Module_Name; | |
851 | while (*cp1) | |
852 | *cp++ = *cp1++; | |
853 | /* | |
854 | * Now we can store the record size | |
855 | */ | |
856 | Size = (cp - Local); | |
857 | Local[0] = Size - 1; | |
858 | /* | |
859 | * Put it into the object record | |
860 | */ | |
861 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
862 | } | |
863 | \f | |
864 | ||
865 | /* | |
866 | * Write the Traceback Module End record | |
867 | */ | |
868 | static | |
869 | VMS_TBT_Module_End () | |
870 | { | |
871 | char Local[2]; | |
872 | ||
873 | /* | |
874 | * End module | |
875 | */ | |
876 | Local[0] = 1; | |
877 | Local[1] = DST_S_C_MODEND; | |
878 | /* | |
879 | * Put it into the object record | |
880 | */ | |
881 | VMS_Store_Immediate_Data (Local, 2, OBJ_S_C_TBT); | |
882 | } | |
883 | \f | |
884 | ||
885 | /* | |
886 | * Write the Traceback Routine Begin record | |
887 | */ | |
888 | static | |
889 | VMS_TBT_Routine_Begin (symbolP, Psect) | |
890 | struct symbol *symbolP; | |
891 | int Psect; | |
892 | { | |
893 | register char *cp, *cp1; | |
894 | char *Name; | |
895 | int Offset; | |
896 | int Size; | |
897 | char Local[512]; | |
898 | ||
899 | /* | |
900 | * Strip the leading "_" from the name | |
901 | */ | |
902 | Name = S_GET_NAME (symbolP); | |
903 | if (*Name == '_') | |
904 | Name++; | |
905 | /* | |
906 | * Get the text psect offset | |
907 | */ | |
908 | Offset = S_GET_VALUE (symbolP); | |
909 | /* | |
910 | * Calculate the record size | |
911 | */ | |
912 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
913 | /* | |
914 | * Record Size | |
915 | */ | |
916 | Local[0] = Size; | |
917 | /* | |
918 | * Begin Routine | |
919 | */ | |
920 | Local[1] = DST_S_C_RTNBEG; | |
921 | /* | |
922 | * Uses CallS/CallG | |
923 | */ | |
924 | Local[2] = 0; | |
925 | /* | |
926 | * Store the data so far | |
927 | */ | |
928 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
929 | /* | |
930 | * Make sure we are still generating a OBJ_S_C_TBT record | |
931 | */ | |
932 | if (Object_Record_Offset == 0) | |
933 | PUT_CHAR (OBJ_S_C_TBT); | |
934 | /* | |
935 | * Now get the symbol address | |
936 | */ | |
937 | PUT_CHAR (TIR_S_C_STA_WPL); | |
938 | PUT_SHORT (Psect); | |
939 | PUT_LONG (Offset); | |
940 | /* | |
941 | * Store the data reference | |
942 | */ | |
943 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
944 | /* | |
945 | * Store the counted string as data | |
946 | */ | |
947 | cp = Local; | |
948 | cp1 = Name; | |
949 | Size = strlen (cp1) + 1; | |
950 | *cp++ = Size - 1; | |
951 | while (*cp1) | |
952 | *cp++ = *cp1++; | |
953 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
954 | } | |
955 | \f | |
956 | ||
957 | /* | |
958 | * Write the Traceback Routine End record | |
959 | * We *must* search the symbol table to find the next routine, since | |
960 | * the assember has a way of reassembling the symbol table OUT OF ORDER | |
961 | * Thus the next routine in the symbol list is not necessarily the | |
962 | * next one in memory. For debugging to work correctly we must know the | |
963 | * size of the routine. | |
964 | */ | |
965 | static | |
966 | VMS_TBT_Routine_End (Max_Size, sp) | |
967 | int Max_Size; | |
968 | symbolS *sp; | |
969 | { | |
970 | symbolS *symbolP; | |
971 | int Size = 0x7fffffff; | |
972 | char Local[16]; | |
a9918088 | 973 | valueT sym_value, sp_value = S_GET_VALUE (sp); |
be9618de KR |
974 | |
975 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
976 | { | |
977 | if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) | |
978 | { | |
979 | if (*S_GET_NAME (symbolP) == 'L') | |
980 | continue; | |
a9918088 KR |
981 | sym_value = S_GET_VALUE (symbolP); |
982 | if (sym_value > sp_value && sym_value < Size) | |
983 | Size = sym_value; | |
984 | ||
985 | /* | |
986 | * Dummy labels like "gcc_compiled." should no longer reach here. | |
987 | */ | |
988 | #if 0 | |
989 | else | |
be9618de | 990 | /* check if gcc_compiled. has size of zero */ |
a9918088 | 991 | if (sym_value == sp_value && |
be9618de KR |
992 | sp != symbolP && |
993 | (!strcmp (S_GET_NAME (sp), "gcc_compiled.") || | |
994 | !strcmp (S_GET_NAME (sp), "gcc2_compiled."))) | |
a9918088 KR |
995 | Size = sym_value; |
996 | #endif | |
c06e55d9 KR |
997 | } |
998 | } | |
be9618de KR |
999 | if (Size == 0x7fffffff) |
1000 | Size = Max_Size; | |
a9918088 | 1001 | Size -= sp_value; /* and get the size of the routine */ |
be9618de KR |
1002 | /* |
1003 | * Record Size | |
1004 | */ | |
1005 | Local[0] = 6; | |
1006 | /* | |
1007 | * End of Routine | |
1008 | */ | |
1009 | Local[1] = DST_S_C_RTNEND; | |
1010 | /* | |
1011 | * Unused | |
1012 | */ | |
1013 | Local[2] = 0; | |
1014 | /* | |
1015 | * Size of routine | |
1016 | */ | |
494a6c05 | 1017 | COPY_LONG (&Local[3], Size); |
be9618de KR |
1018 | /* |
1019 | * Store the record | |
1020 | */ | |
1021 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); | |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * Write the Traceback Block End record | |
1026 | */ | |
1027 | static | |
1028 | VMS_TBT_Block_Begin (symbolP, Psect, Name) | |
1029 | struct symbol *symbolP; | |
1030 | int Psect; | |
1031 | char *Name; | |
1032 | { | |
1033 | register char *cp, *cp1; | |
1034 | int Offset; | |
1035 | int Size; | |
1036 | char Local[512]; | |
1037 | /* | |
1038 | * Begin block | |
1039 | */ | |
1040 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
1041 | /* | |
1042 | * Record Size | |
1043 | */ | |
1044 | Local[0] = Size; | |
1045 | /* | |
1046 | * Begin Block - We simulate with a phony routine | |
1047 | */ | |
1048 | Local[1] = DST_S_C_BLKBEG; | |
1049 | /* | |
1050 | * Uses CallS/CallG | |
1051 | */ | |
1052 | Local[2] = 0; | |
1053 | /* | |
1054 | * Store the data so far | |
1055 | */ | |
1056 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_DBG); | |
1057 | /* | |
1058 | * Make sure we are still generating a OBJ_S_C_DBG record | |
1059 | */ | |
1060 | if (Object_Record_Offset == 0) | |
1061 | PUT_CHAR (OBJ_S_C_DBG); | |
1062 | /* | |
1063 | * Now get the symbol address | |
1064 | */ | |
1065 | PUT_CHAR (TIR_S_C_STA_WPL); | |
1066 | PUT_SHORT (Psect); | |
1067 | /* | |
1068 | * Get the text psect offset | |
1069 | */ | |
1070 | Offset = S_GET_VALUE (symbolP); | |
1071 | PUT_LONG (Offset); | |
1072 | /* | |
1073 | * Store the data reference | |
1074 | */ | |
1075 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1076 | /* | |
1077 | * Store the counted string as data | |
1078 | */ | |
1079 | cp = Local; | |
1080 | cp1 = Name; | |
1081 | Size = strlen (cp1) + 1; | |
1082 | *cp++ = Size - 1; | |
1083 | while (*cp1) | |
1084 | *cp++ = *cp1++; | |
1085 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_DBG); | |
1086 | } | |
1087 | \f | |
1088 | ||
1089 | /* | |
1090 | * Write the Traceback Block End record | |
1091 | */ | |
1092 | static | |
db4e0f90 KR |
1093 | VMS_TBT_Block_End (Size) |
1094 | int Size; | |
be9618de KR |
1095 | { |
1096 | char Local[16]; | |
1097 | ||
1098 | /* | |
1099 | * End block - simulate with a phony end routine | |
1100 | */ | |
1101 | Local[0] = 6; | |
1102 | Local[1] = DST_S_C_BLKEND; | |
494a6c05 | 1103 | COPY_LONG (&Local[3], Size); |
be9618de KR |
1104 | /* |
1105 | * Unused | |
1106 | */ | |
1107 | Local[2] = 0; | |
1108 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_DBG); | |
1109 | } | |
1110 | \f | |
1111 | ||
1112 | ||
1113 | /* | |
1114 | * Write a Line number / PC correlation record | |
1115 | */ | |
1116 | static | |
1117 | VMS_TBT_Line_PC_Correlation (Line_Number, Offset, Psect, Do_Delta) | |
1118 | int Line_Number; | |
1119 | int Offset; | |
1120 | int Psect; | |
1121 | int Do_Delta; | |
1122 | { | |
1123 | register char *cp; | |
1124 | char Local[64]; | |
1125 | ||
1126 | /* | |
1127 | * If not delta, set our PC/Line number correlation | |
1128 | */ | |
1129 | if (Do_Delta == 0) | |
1130 | { | |
1131 | /* | |
1132 | * Size | |
1133 | */ | |
1134 | Local[0] = 1 + 1 + 2 + 1 + 4; | |
1135 | /* | |
1136 | * Line Number/PC correlation | |
1137 | */ | |
1138 | Local[1] = DST_S_C_LINE_NUM; | |
1139 | /* | |
1140 | * Set Line number | |
1141 | */ | |
1142 | Local[2] = DST_S_C_SET_LINE_NUM; | |
494a6c05 | 1143 | COPY_SHORT (&Local[3], Line_Number - 1); |
be9618de KR |
1144 | /* |
1145 | * Set PC | |
1146 | */ | |
1147 | Local[5] = DST_S_C_SET_ABS_PC; | |
1148 | VMS_Store_Immediate_Data (Local, 6, OBJ_S_C_TBT); | |
1149 | /* | |
1150 | * Make sure we are still generating a OBJ_S_C_TBT record | |
1151 | */ | |
1152 | if (Object_Record_Offset == 0) | |
1153 | PUT_CHAR (OBJ_S_C_TBT); | |
1154 | if (Psect < 255) | |
1155 | { | |
1156 | PUT_CHAR (TIR_S_C_STA_PL); | |
1157 | PUT_CHAR (Psect); | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | PUT_CHAR (TIR_S_C_STA_WPL); | |
1162 | PUT_SHORT (Psect); | |
1163 | } | |
1164 | PUT_LONG (Offset); | |
1165 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1166 | /* | |
1167 | * Do a PC offset of 0 to register the line number | |
1168 | */ | |
1169 | Local[0] = 2; | |
1170 | Local[1] = DST_S_C_LINE_NUM; | |
1171 | Local[2] = 0; /* Increment PC by 0 and register line # */ | |
1172 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
1173 | } | |
1174 | else | |
1175 | { | |
1176 | /* | |
1177 | * If Delta is negative, terminate the line numbers | |
1178 | */ | |
1179 | if (Do_Delta < 0) | |
1180 | { | |
1181 | Local[0] = 1 + 1 + 4; | |
1182 | Local[1] = DST_S_C_LINE_NUM; | |
1183 | Local[2] = DST_S_C_TERM_L; | |
494a6c05 | 1184 | COPY_LONG (&Local[3], Offset); |
be9618de KR |
1185 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); |
1186 | /* | |
1187 | * Done | |
1188 | */ | |
1189 | return; | |
1190 | } | |
1191 | /* | |
1192 | * Do a PC/Line delta | |
1193 | */ | |
1194 | cp = Local + 1; | |
1195 | *cp++ = DST_S_C_LINE_NUM; | |
1196 | if (Line_Number > 1) | |
1197 | { | |
1198 | /* | |
1199 | * We need to increment the line number | |
1200 | */ | |
1201 | if (Line_Number - 1 <= 255) | |
1202 | { | |
1203 | *cp++ = DST_S_C_INCR_LINUM; | |
1204 | *cp++ = Line_Number - 1; | |
1205 | } | |
1206 | else | |
1207 | { | |
1208 | *cp++ = DST_S_C_INCR_LINUM_W; | |
494a6c05 | 1209 | COPY_SHORT (cp, Line_Number - 1); |
be9618de KR |
1210 | cp += sizeof (short); |
1211 | } | |
1212 | } | |
1213 | /* | |
1214 | * Increment the PC | |
1215 | */ | |
1216 | if (Offset <= 128) | |
1217 | { | |
1218 | *cp++ = -Offset; | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | if (Offset < 0x10000) | |
1223 | { | |
1224 | *cp++ = DST_S_C_DELTA_PC_W; | |
494a6c05 | 1225 | COPY_SHORT (cp, Offset); |
be9618de KR |
1226 | cp += sizeof (short); |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | *cp++ = DST_S_C_DELTA_PC_L; | |
494a6c05 | 1231 | COPY_LONG (cp, Offset); |
be9618de KR |
1232 | cp += sizeof (long); |
1233 | } | |
1234 | } | |
1235 | Local[0] = cp - (Local + 1); | |
1236 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1237 | } | |
1238 | } | |
1239 | \f | |
1240 | ||
1241 | /* | |
1242 | * Describe a source file to the debugger | |
1243 | */ | |
1244 | static | |
1245 | VMS_TBT_Source_File (Filename, ID_Number) | |
1246 | char *Filename; | |
1247 | int ID_Number; | |
1248 | { | |
1249 | register char *cp, *cp1; | |
1250 | int Status, i; | |
1251 | char Local[512]; | |
b9419dd2 | 1252 | #ifndef VMS /* Used for cross-assembly */ |
be9618de | 1253 | i = strlen (Filename); |
b9419dd2 | 1254 | #else /* VMS */ |
be9618de KR |
1255 | static struct FAB Fab; |
1256 | static struct NAM Nam; | |
1257 | static struct XABDAT Date_Xab; | |
1258 | static struct XABFHC File_Header_Xab; | |
1259 | char Es_String[255], Rs_String[255]; | |
1260 | ||
1261 | /* | |
1262 | * Setup the Fab | |
1263 | */ | |
1264 | Fab.fab$b_bid = FAB$C_BID; | |
1265 | Fab.fab$b_bln = sizeof (Fab); | |
1266 | Fab.fab$l_nam = (&Nam); | |
1267 | Fab.fab$l_xab = (char *) &Date_Xab; | |
1268 | /* | |
1269 | * Setup the Nam block so we can find out the FULL name | |
1270 | * of the source file. | |
1271 | */ | |
1272 | Nam.nam$b_bid = NAM$C_BID; | |
1273 | Nam.nam$b_bln = sizeof (Nam); | |
1274 | Nam.nam$l_rsa = Rs_String; | |
1275 | Nam.nam$b_rss = sizeof (Rs_String); | |
1276 | Nam.nam$l_esa = Es_String; | |
1277 | Nam.nam$b_ess = sizeof (Es_String); | |
1278 | /* | |
1279 | * Setup the Date and File Header Xabs | |
1280 | */ | |
1281 | Date_Xab.xab$b_cod = XAB$C_DAT; | |
1282 | Date_Xab.xab$b_bln = sizeof (Date_Xab); | |
1283 | Date_Xab.xab$l_nxt = (char *) &File_Header_Xab; | |
1284 | File_Header_Xab.xab$b_cod = XAB$C_FHC; | |
1285 | File_Header_Xab.xab$b_bln = sizeof (File_Header_Xab); | |
1286 | /* | |
1287 | * Get the file information | |
1288 | */ | |
1289 | Fab.fab$l_fna = Filename; | |
1290 | Fab.fab$b_fns = strlen (Filename); | |
1291 | Status = sys$open (&Fab); | |
1292 | if (!(Status & 1)) | |
1293 | { | |
a9918088 | 1294 | printf ("gas: Couldn't find source file \"%s\", status=%%X%x\n", |
be9618de KR |
1295 | Filename, Status); |
1296 | return (0); | |
1297 | } | |
1298 | sys$close (&Fab); | |
1299 | /* | |
1300 | * Calculate the size of the resultant string | |
1301 | */ | |
1302 | i = Nam.nam$b_rsl; | |
b9419dd2 | 1303 | #endif /* VMS */ |
be9618de KR |
1304 | /* |
1305 | * Size of record | |
1306 | */ | |
1307 | Local[0] = 1 + 1 + 1 + 1 + 1 + 2 + 8 + 4 + 2 + 1 + 1 + i + 1; | |
1308 | /* | |
1309 | * Source declaration | |
1310 | */ | |
1311 | Local[1] = DST_S_C_SOURCE; | |
1312 | /* | |
1313 | * Make formfeeds count as source records | |
1314 | */ | |
1315 | Local[2] = DST_S_C_SRC_FORMFEED; | |
1316 | /* | |
1317 | * Declare source file | |
1318 | */ | |
1319 | Local[3] = DST_S_C_SRC_DECLFILE; | |
1320 | Local[4] = 1 + 2 + 8 + 4 + 2 + 1 + 1 + i + 1; | |
1321 | cp = Local + 5; | |
1322 | /* | |
1323 | * Flags | |
1324 | */ | |
1325 | *cp++ = 0; | |
1326 | /* | |
1327 | * File ID | |
1328 | */ | |
494a6c05 | 1329 | COPY_SHORT (cp, ID_Number); |
be9618de | 1330 | cp += sizeof (short); |
b9419dd2 | 1331 | #ifndef VMS |
be9618de KR |
1332 | /* |
1333 | * Creation Date. Unknown, so we fill with zeroes. | |
1334 | */ | |
1335 | *(long *) cp = 0; | |
1336 | cp += sizeof (long); | |
1337 | *(long *) cp = 0; | |
1338 | cp += sizeof (long); | |
1339 | /* | |
1340 | * End of file block | |
1341 | */ | |
1342 | *(long *) cp = 0; | |
1343 | cp += sizeof (long); | |
1344 | /* | |
1345 | * First free byte | |
1346 | */ | |
1347 | *(short *) cp = 0; | |
1348 | cp += sizeof (short); | |
1349 | /* | |
1350 | * Record format | |
1351 | */ | |
1352 | *cp++ = 0; | |
1353 | /* | |
1354 | * Filename | |
1355 | */ | |
1356 | *cp++ = i; | |
1357 | cp1 = Filename; | |
1358 | #else /* Use this code when assembling for VMS on a VMS system */ | |
1359 | /* | |
1360 | * Creation Date | |
1361 | */ | |
1362 | *(long *) cp = ((long *) &Date_Xab.xab$q_cdt)[0]; | |
1363 | cp += sizeof (long); | |
1364 | *(long *) cp = ((long *) &Date_Xab.xab$q_cdt)[1]; | |
1365 | cp += sizeof (long); | |
1366 | /* | |
1367 | * End of file block | |
1368 | */ | |
1369 | *(long *) cp = File_Header_Xab.xab$l_ebk; | |
1370 | cp += sizeof (long); | |
1371 | /* | |
1372 | * First free byte | |
1373 | */ | |
1374 | *(short *) cp = File_Header_Xab.xab$w_ffb; | |
1375 | cp += sizeof (short); | |
1376 | /* | |
1377 | * Record format | |
1378 | */ | |
1379 | *cp++ = File_Header_Xab.xab$b_rfo; | |
1380 | /* | |
1381 | * Filename | |
1382 | */ | |
1383 | *cp++ = i; | |
1384 | cp1 = Rs_String; | |
b9419dd2 | 1385 | #endif /* VMS */ |
be9618de KR |
1386 | while (--i >= 0) |
1387 | *cp++ = *cp1++; | |
1388 | /* | |
1389 | * Library module name (none) | |
1390 | */ | |
1391 | *cp++ = 0; | |
1392 | /* | |
1393 | * Done | |
1394 | */ | |
1395 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1396 | return 1; | |
1397 | } | |
1398 | \f | |
1399 | ||
1400 | /* | |
1401 | * Give the number of source lines to the debugger | |
1402 | */ | |
1403 | static | |
1404 | VMS_TBT_Source_Lines (ID_Number, Starting_Line_Number, Number_Of_Lines) | |
1405 | int ID_Number; | |
1406 | int Starting_Line_Number; | |
1407 | int Number_Of_Lines; | |
1408 | { | |
1409 | char *cp, *cp1; | |
1410 | char Local[16]; | |
1411 | ||
1412 | /* | |
1413 | * Size of record | |
1414 | */ | |
1415 | Local[0] = 1 + 1 + 2 + 1 + 4 + 1 + 2; | |
1416 | /* | |
1417 | * Source declaration | |
1418 | */ | |
1419 | Local[1] = DST_S_C_SOURCE; | |
1420 | /* | |
1421 | * Set Source File | |
1422 | */ | |
1423 | cp = Local + 2; | |
1424 | *cp++ = DST_S_C_SRC_SETFILE; | |
1425 | /* | |
1426 | * File ID Number | |
1427 | */ | |
494a6c05 | 1428 | COPY_SHORT (cp, ID_Number); |
be9618de KR |
1429 | cp += sizeof (short); |
1430 | /* | |
1431 | * Set record number | |
1432 | */ | |
1433 | *cp++ = DST_S_C_SRC_SETREC_L; | |
494a6c05 | 1434 | COPY_LONG (cp, Starting_Line_Number); |
be9618de KR |
1435 | cp += sizeof (long); |
1436 | /* | |
1437 | * Define lines | |
1438 | */ | |
1439 | *cp++ = DST_S_C_SRC_DEFLINES_W; | |
494a6c05 | 1440 | COPY_SHORT (cp, Number_Of_Lines); |
be9618de KR |
1441 | cp += sizeof (short); |
1442 | /* | |
1443 | * Done | |
1444 | */ | |
1445 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1446 | } | |
1447 | \f | |
1448 | ||
1449 | ||
1450 | ||
1451 | /* This routine locates a file in the list of files. If an entry does not | |
1452 | * exist, one is created. For include files, a new entry is always created | |
1453 | * such that inline functions can be properly debugged. */ | |
1454 | static struct input_file * | |
1455 | find_file (sp) | |
1456 | symbolS *sp; | |
1457 | { | |
1458 | struct input_file *same_file; | |
1459 | struct input_file *fpnt; | |
1460 | same_file = (struct input_file *) NULL; | |
1461 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) | |
1462 | { | |
1463 | if (fpnt == (struct input_file *) NULL) | |
1464 | break; | |
1465 | if (fpnt->spnt == sp) | |
1466 | return fpnt; | |
c06e55d9 | 1467 | } |
be9618de KR |
1468 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) |
1469 | { | |
1470 | if (fpnt == (struct input_file *) NULL) | |
1471 | break; | |
1472 | if (strcmp (S_GET_NAME (sp), fpnt->name) == 0) | |
1473 | { | |
1474 | if (fpnt->flag == 1) | |
1475 | return fpnt; | |
1476 | same_file = fpnt; | |
1477 | break; | |
c06e55d9 KR |
1478 | } |
1479 | } | |
1480 | fpnt = (struct input_file *) xmalloc (sizeof (struct input_file)); | |
be9618de KR |
1481 | if (file_root == (struct input_file *) NULL) |
1482 | file_root = fpnt; | |
1483 | else | |
1484 | { | |
1485 | struct input_file *fpnt1; | |
1486 | for (fpnt1 = file_root; fpnt1->next; fpnt1 = fpnt1->next) ; | |
1487 | fpnt1->next = fpnt; | |
c06e55d9 | 1488 | } |
be9618de KR |
1489 | fpnt->next = (struct input_file *) NULL; |
1490 | fpnt->name = S_GET_NAME (sp); | |
1491 | fpnt->min_line = 0x7fffffff; | |
1492 | fpnt->max_line = 0; | |
1493 | fpnt->offset = 0; | |
1494 | fpnt->flag = 0; | |
1495 | fpnt->file_number = 0; | |
1496 | fpnt->spnt = sp; | |
1497 | fpnt->same_file_fpnt = same_file; | |
1498 | return fpnt; | |
1499 | } | |
1500 | \f | |
1501 | /* | |
1502 | * The following functions and definitions are used to generate object records | |
1503 | * that will describe program variables to the VMS debugger. | |
1504 | * | |
1505 | * This file contains many of the routines needed to output debugging info into | |
1506 | * the object file that the VMS debugger needs to understand symbols. These | |
1507 | * routines are called very late in the assembly process, and thus we can be | |
1508 | * fairly lax about changing things, since the GSD and the TIR sections have | |
1509 | * already been output. | |
1510 | */ | |
1511 | ||
1512 | ||
1513 | /* This routine converts a number string into an integer, and stops when it | |
a9918088 | 1514 | * sees an invalid character. The return value is the address of the character |
be9618de KR |
1515 | * just past the last character read. No error is generated. |
1516 | */ | |
1517 | static char * | |
1518 | cvt_integer (str, rtn) | |
1519 | char *str; | |
1520 | int *rtn; | |
1521 | { | |
1522 | int ival, neg; | |
1523 | neg = *str == '-' ? ++str, -1 : 1; | |
a9918088 | 1524 | ival = 0; |
be9618de KR |
1525 | while ((*str <= '9') && (*str >= '0')) |
1526 | ival = 10 * ival + *str++ - '0'; | |
1527 | *rtn = neg * ival; | |
1528 | return str; | |
1529 | } | |
1530 | ||
1531 | /* this routine fixes the names that are generated by C++, ".this" is a good | |
1532 | * example. The period does not work for the debugger, since it looks like | |
1533 | * the syntax for a structure element, and thus it gets mightily confused | |
1534 | * | |
1535 | * We also use this to strip the PsectAttribute hack from the name before we | |
1536 | * write a debugger record */ | |
1537 | ||
1538 | static char * | |
1539 | fix_name (pnt) | |
1540 | char *pnt; | |
1541 | { | |
1542 | char *pnt1; | |
1543 | /* | |
1544 | * Kill any leading "_" | |
1545 | */ | |
1546 | if (*pnt == '_') | |
1547 | pnt++; | |
1548 | /* | |
1549 | * Is there a Psect Attribute to skip?? | |
1550 | */ | |
1551 | if (HAS_PSECT_ATTRIBUTES (pnt)) | |
1552 | { | |
1553 | /* | |
1554 | * Yes: Skip it | |
1555 | */ | |
1556 | pnt += PSECT_ATTRIBUTES_STRING_LENGTH; | |
1557 | while (*pnt) | |
1558 | { | |
1559 | if ((pnt[0] == '$') && (pnt[1] == '$')) | |
1560 | { | |
1561 | pnt += 2; | |
1562 | break; | |
1563 | } | |
1564 | pnt++; | |
1565 | } | |
1566 | } | |
1567 | /* Here we fix the .this -> $this conversion */ | |
1568 | for (pnt1 = pnt; *pnt1 != 0; pnt1++) | |
1569 | { | |
1570 | if (*pnt1 == '.') | |
1571 | *pnt1 = '$'; | |
c06e55d9 | 1572 | } |
be9618de KR |
1573 | return pnt; |
1574 | } | |
1575 | ||
1576 | /* When defining a structure, this routine is called to find the name of | |
1577 | * the actual structure. It is assumed that str points to the equal sign | |
1578 | * in the definition, and it moves backward until it finds the start of the | |
1579 | * name. If it finds a 0, then it knows that this structure def is in the | |
1580 | * outermost level, and thus symbol_name points to the symbol name. | |
1581 | */ | |
1582 | static char * | |
1583 | get_struct_name (str) | |
1584 | char *str; | |
1585 | { | |
1586 | char *pnt; | |
1587 | pnt = str; | |
1588 | while ((*pnt != ':') && (*pnt != '\0')) | |
1589 | pnt--; | |
1590 | if (*pnt == '\0') | |
1591 | return symbol_name; | |
1592 | *pnt-- = '\0'; | |
1593 | while ((*pnt != ';') && (*pnt != '=')) | |
1594 | pnt--; | |
1595 | if (*pnt == ';') | |
1596 | return pnt + 1; | |
1597 | while ((*pnt < '0') || (*pnt > '9')) | |
1598 | pnt++; | |
1599 | while ((*pnt >= '0') && (*pnt <= '9')) | |
1600 | pnt++; | |
1601 | return pnt; | |
1602 | } | |
1603 | ||
1604 | /* search symbol list for type number dbx_type. Return a pointer to struct */ | |
1605 | static struct VMS_DBG_Symbol * | |
1606 | find_symbol (dbx_type) | |
1607 | int dbx_type; | |
1608 | { | |
1609 | struct VMS_DBG_Symbol *spnt; | |
1610 | spnt = VMS_Symbol_type_list; | |
1611 | while (spnt != (struct VMS_DBG_Symbol *) NULL) | |
1612 | { | |
1613 | if (spnt->dbx_type == dbx_type) | |
1614 | break; | |
1615 | spnt = spnt->next; | |
c06e55d9 | 1616 | } |
be9618de KR |
1617 | if (spnt == (struct VMS_DBG_Symbol *) NULL) |
1618 | return 0; /*Dunno what this is*/ | |
494a6c05 KR |
1619 | if(spnt->advanced == ALIAS) |
1620 | return find_symbol(spnt->type2); | |
be9618de KR |
1621 | return spnt; |
1622 | } | |
1623 | ||
1624 | ||
1625 | /* this routine puts info into either Local or Asuffix, depending on the sign | |
1626 | * of size. The reason is that it is easier to build the variable descriptor | |
1627 | * backwards, while the array descriptor is best built forwards. In the end | |
1628 | * they get put together, if there is not a struct/union/enum along the way | |
1629 | */ | |
1630 | static | |
1631 | push (value, size) | |
1632 | int value, size; | |
1633 | { | |
be9618de KR |
1634 | int i; |
1635 | int size1; | |
be9618de KR |
1636 | size1 = size; |
1637 | if (size < 0) | |
1638 | { | |
1639 | size1 = -size; | |
494a6c05 KR |
1640 | if (Lpnt < size1) |
1641 | { | |
1642 | overflow = 1; | |
1643 | Lpnt = 1; | |
1644 | return; | |
c06e55d9 | 1645 | } |
494a6c05 KR |
1646 | Lpnt -= size1; |
1647 | md_number_to_chars (&Local[Lpnt + 1], value, size1); | |
1648 | } | |
be9618de | 1649 | else |
494a6c05 KR |
1650 | { |
1651 | if (Apoint + size1 >= MAX_DEBUG_RECORD) | |
1652 | { | |
1653 | overflow = 1; | |
1654 | Apoint = MAX_DEBUG_RECORD - 1; | |
1655 | return; | |
c06e55d9 | 1656 | } |
494a6c05 KR |
1657 | md_number_to_chars (&Asuffix[Apoint], value, size1); |
1658 | Apoint += size1; | |
c06e55d9 | 1659 | } |
be9618de KR |
1660 | } |
1661 | ||
1662 | /* this routine generates the array descriptor for a given array */ | |
1663 | static | |
1664 | array_suffix (spnt2) | |
1665 | struct VMS_DBG_Symbol *spnt2; | |
1666 | { | |
1667 | struct VMS_DBG_Symbol *spnt; | |
1668 | struct VMS_DBG_Symbol *spnt1; | |
1669 | int rank; | |
1670 | int total_size; | |
1671 | int i; | |
1672 | rank = 0; | |
1673 | spnt = spnt2; | |
1674 | while (spnt->advanced != ARRAY) | |
1675 | { | |
1676 | spnt = find_symbol (spnt->type2); | |
1677 | if (spnt == (struct VMS_DBG_Symbol *) NULL) | |
1678 | return; | |
c06e55d9 | 1679 | } |
be9618de KR |
1680 | spnt1 = spnt; |
1681 | spnt1 = spnt; | |
1682 | total_size = 1; | |
1683 | while (spnt1->advanced == ARRAY) | |
1684 | { | |
1685 | rank++; | |
1686 | total_size *= (spnt1->index_max - spnt1->index_min + 1); | |
1687 | spnt1 = find_symbol (spnt1->type2); | |
c06e55d9 | 1688 | } |
be9618de | 1689 | total_size = total_size * spnt1->data_size; |
a9918088 | 1690 | push (spnt1->data_size, 2); /* element size */ |
c06e55d9 | 1691 | if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) |
be9618de KR |
1692 | push (0, 1); |
1693 | else | |
a9918088 KR |
1694 | push (spnt1->VMS_type, 1); /* element type */ |
1695 | push (DSC_K_CLASS_A, 1); /* descriptor class */ | |
1696 | push (0, 4); /* base address */ | |
1697 | push (0, 1); /* scale factor -- not applicable */ | |
1698 | push (0, 1); /* digit count -- not applicable */ | |
1699 | push (0xc0, 1); /* flags: multiplier block & bounds present */ | |
1700 | push (rank, 1); /* number of dimensions */ | |
be9618de | 1701 | push (total_size, 4); |
a9918088 | 1702 | push (0, 4); /* pointer to element [0][0]...[0] */ |
be9618de KR |
1703 | spnt1 = spnt; |
1704 | while (spnt1->advanced == ARRAY) | |
1705 | { | |
1706 | push (spnt1->index_max - spnt1->index_min + 1, 4); | |
1707 | spnt1 = find_symbol (spnt1->type2); | |
c06e55d9 | 1708 | } |
be9618de KR |
1709 | spnt1 = spnt; |
1710 | while (spnt1->advanced == ARRAY) | |
1711 | { | |
1712 | push (spnt1->index_min, 4); | |
1713 | push (spnt1->index_max, 4); | |
1714 | spnt1 = find_symbol (spnt1->type2); | |
c06e55d9 | 1715 | } |
be9618de KR |
1716 | } |
1717 | ||
1718 | /* this routine generates the start of a variable descriptor based upon | |
1719 | * a struct/union/enum that has yet to be defined. We define this spot as | |
1720 | * a new location, and save four bytes for the address. When the struct is | |
a9918088 | 1721 | * finally defined, then we can go back and plug in the correct address. |
be9618de KR |
1722 | */ |
1723 | static | |
1724 | new_forward_ref (dbx_type) | |
1725 | int dbx_type; | |
1726 | { | |
1727 | struct forward_ref *fpnt; | |
c06e55d9 | 1728 | fpnt = (struct forward_ref *) xmalloc (sizeof (struct forward_ref)); |
be9618de KR |
1729 | fpnt->next = f_ref_root; |
1730 | f_ref_root = fpnt; | |
1731 | fpnt->dbx_type = dbx_type; | |
1732 | fpnt->struc_numb = ++structure_count; | |
1733 | fpnt->resolved = 'N'; | |
a9918088 | 1734 | push (DST_K_TS_IND, -1); /* indirect type specification */ |
be9618de KR |
1735 | total_len = 5; |
1736 | push (total_len, -2); | |
1737 | struct_number = -fpnt->struc_numb; | |
1738 | } | |
1739 | ||
1740 | /* this routine generates the variable descriptor used to describe non-basic | |
1741 | * variables. It calls itself recursively until it gets to the bottom of it | |
1742 | * all, and then builds the descriptor backwards. It is easiest to do it this | |
1743 | *way since we must periodically write length bytes, and it is easiest if we know | |
1744 | *the value when it is time to write it. | |
1745 | */ | |
1746 | static int | |
1747 | gen1 (spnt, array_suffix_len) | |
1748 | struct VMS_DBG_Symbol *spnt; | |
1749 | int array_suffix_len; | |
1750 | { | |
1751 | struct VMS_DBG_Symbol *spnt1; | |
1752 | int i; | |
1753 | switch (spnt->advanced) | |
1754 | { | |
1755 | case VOID: | |
1756 | push (DBG_S_C_VOID, -1); | |
1757 | total_len += 1; | |
1758 | push (total_len, -2); | |
1759 | return 0; | |
1760 | case BASIC: | |
1761 | case FUNCTION: | |
1762 | if (array_suffix_len == 0) | |
1763 | { | |
1764 | push (spnt->VMS_type, -1); | |
1765 | push (DBG_S_C_BASIC, -1); | |
1766 | total_len = 2; | |
1767 | push (total_len, -2); | |
1768 | return 1; | |
c06e55d9 | 1769 | } |
be9618de | 1770 | push (0, -4); |
a9918088 KR |
1771 | push (DST_K_VFLAGS_DSC, -1); |
1772 | push (DST_K_TS_DSC, -1); /* descriptor type specification */ | |
be9618de KR |
1773 | total_len = -2; |
1774 | return 1; | |
1775 | case STRUCT: | |
1776 | case UNION: | |
1777 | case ENUM: | |
1778 | struct_number = spnt->struc_numb; | |
1779 | if (struct_number < 0) | |
1780 | { | |
1781 | new_forward_ref (spnt->dbx_type); | |
1782 | return 1; | |
1783 | } | |
1784 | push (DBG_S_C_STRUCT, -1); | |
1785 | total_len = 5; | |
1786 | push (total_len, -2); | |
1787 | return 1; | |
1788 | case POINTER: | |
1789 | spnt1 = find_symbol (spnt->type2); | |
1790 | i = 1; | |
a9918088 | 1791 | if (!spnt1) |
be9618de KR |
1792 | new_forward_ref (spnt->type2); |
1793 | else | |
1794 | i = gen1 (spnt1, 0); | |
1795 | if (i) | |
1796 | { /* (*void) is a special case, do not put pointer suffix*/ | |
1797 | push (DBG_S_C_POINTER, -1); | |
1798 | total_len += 3; | |
1799 | push (total_len, -2); | |
c06e55d9 | 1800 | } |
be9618de KR |
1801 | return 1; |
1802 | case ARRAY: | |
1803 | spnt1 = spnt; | |
1804 | while (spnt1->advanced == ARRAY) | |
1805 | { | |
1806 | spnt1 = find_symbol (spnt1->type2); | |
a9918088 | 1807 | if (!spnt1) |
be9618de KR |
1808 | { |
1809 | printf ("gcc-as warning(debugger output):"); | |
1810 | printf ("Forward reference error, dbx type %d\n", | |
1811 | spnt->type2); | |
1812 | return; | |
1813 | } | |
c06e55d9 | 1814 | } |
be9618de KR |
1815 | /* It is too late to generate forward references, so the user gets a message. |
1816 | * This should only happen on a compiler error */ | |
1817 | i = gen1 (spnt1, 1); | |
1818 | i = Apoint; | |
1819 | array_suffix (spnt); | |
1820 | array_suffix_len = Apoint - i; | |
1821 | switch (spnt1->advanced) | |
1822 | { | |
1823 | case BASIC: | |
1824 | case FUNCTION: | |
1825 | break; | |
1826 | default: | |
1827 | push (0, -2); | |
1828 | total_len += 2; | |
1829 | push (total_len, -2); | |
a9918088 KR |
1830 | push (DST_K_VFLAGS_DSC, -1); |
1831 | push (1, -1); /* flags: element value spec included */ | |
1832 | push (1, -1); /* one dimension */ | |
be9618de | 1833 | push (DBG_S_C_COMPLEX_ARRAY, -1); |
c06e55d9 | 1834 | } |
be9618de KR |
1835 | total_len += array_suffix_len + 8; |
1836 | push (total_len, -2); | |
c06e55d9 | 1837 | } |
be9618de KR |
1838 | } |
1839 | ||
1840 | /* This generates a suffix for a variable. If it is not a defined type yet, | |
1841 | * then dbx_type contains the type we are expecting so we can generate a | |
1842 | * forward reference. This calls gen1 to build most of the descriptor, and | |
1843 | * then it puts the icing on at the end. It then dumps whatever is needed | |
1844 | * to get a complete descriptor (i.e. struct reference, array suffix ). | |
1845 | */ | |
1846 | static | |
1847 | generate_suffix (spnt, dbx_type) | |
1848 | struct VMS_DBG_Symbol *spnt; | |
1849 | int dbx_type; | |
1850 | { | |
a9918088 KR |
1851 | static CONST char pvoid[6] = { |
1852 | 5, /* record.length == 5 */ | |
1853 | DST_K_TYPSPEC, /* record.type == 1 (type specification) */ | |
1854 | 0, /* name.length == 0, no name follows */ | |
1855 | 1, 0, /* type.length == 1 {2 bytes, little endian} */ | |
1856 | DBG_S_C_VOID /* type.type == 5 (pointer to unspecified) */ | |
1857 | }; | |
be9618de KR |
1858 | int ilen; |
1859 | int i; | |
be9618de KR |
1860 | struct VMS_DBG_Symbol *spnt1; |
1861 | Apoint = 0; | |
1862 | Lpnt = MAX_DEBUG_RECORD - 1; | |
1863 | total_len = 0; | |
1864 | struct_number = 0; | |
1865 | overflow = 0; | |
a9918088 | 1866 | if (!spnt) |
be9618de KR |
1867 | new_forward_ref (dbx_type); |
1868 | else | |
1869 | { | |
c06e55d9 | 1870 | if (spnt->VMS_type != DBG_S_C_ADVANCED_TYPE) |
be9618de KR |
1871 | return 0; /* no suffix needed */ |
1872 | gen1 (spnt, 0); | |
c06e55d9 | 1873 | } |
a9918088 KR |
1874 | push (0, -1); /* no name (len==0) */ |
1875 | push (DST_K_TYPSPEC, -1); | |
be9618de KR |
1876 | total_len += 4; |
1877 | push (total_len, -1); | |
1878 | /* if the variable descriptor overflows the record, output a descriptor for | |
1879 | * a pointer to void. | |
1880 | */ | |
1881 | if ((total_len >= MAX_DEBUG_RECORD) || overflow) | |
1882 | { | |
1883 | printf (" Variable descriptor %d too complicated. Defined as *void ", spnt->dbx_type); | |
1884 | VMS_Store_Immediate_Data (pvoid, 6, OBJ_S_C_DBG); | |
1885 | return; | |
c06e55d9 | 1886 | } |
be9618de KR |
1887 | i = 0; |
1888 | while (Lpnt < MAX_DEBUG_RECORD - 1) | |
1889 | Local[i++] = Local[++Lpnt]; | |
1890 | Lpnt = i; | |
1891 | /* we use this for a reference to a structure that has already been defined */ | |
1892 | if (struct_number > 0) | |
1893 | { | |
1894 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1895 | Lpnt = 0; | |
1896 | VMS_Store_Struct (struct_number); | |
c06e55d9 | 1897 | } |
be9618de KR |
1898 | /* we use this for a forward reference to a structure that has yet to be |
1899 | *defined. We store four bytes of zero to make room for the actual address once | |
1900 | * it is known | |
1901 | */ | |
1902 | if (struct_number < 0) | |
1903 | { | |
1904 | struct_number = -struct_number; | |
1905 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1906 | Lpnt = 0; | |
1907 | VMS_Def_Struct (struct_number); | |
a9918088 KR |
1908 | COPY_LONG(&Local[Lpnt], 0L); |
1909 | Lpnt += 4; | |
be9618de KR |
1910 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); |
1911 | Lpnt = 0; | |
c06e55d9 | 1912 | } |
be9618de KR |
1913 | i = 0; |
1914 | while (i < Apoint) | |
1915 | Local[Lpnt++] = Asuffix[i++]; | |
1916 | if (Lpnt != 0) | |
1917 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1918 | Lpnt = 0; | |
1919 | } | |
1920 | ||
a9918088 KR |
1921 | /* "novel length" type doesn't work for simple atomic types */ |
1922 | #define USE_BITSTRING_DESCRIPTOR(t) ((t)->advanced == BASIC) | |
1923 | #undef SETUP_BASIC_TYPES | |
1924 | ||
1925 | static void | |
1926 | bitfield_suffix (spnt, width) | |
1927 | struct VMS_DBG_Symbol *spnt; | |
1928 | int width; | |
1929 | { | |
1930 | Local[Lpnt++] = 13; /* rec.len==13 */ | |
1931 | Local[Lpnt++] = DST_K_TYPSPEC; /* a type specification record */ | |
1932 | Local[Lpnt++] = 0; /* not named */ | |
1933 | COPY_SHORT(&Local[Lpnt], 9); /* typ.len==9 */ | |
1934 | Lpnt += 2; | |
1935 | Local[Lpnt++] = DST_K_TS_NOV_LENG; /* This type is a "novel length" | |
1936 | incarnation of some other type. */ | |
1937 | COPY_LONG(&Local[Lpnt], width); /* size in bits == novel length */ | |
1938 | Lpnt += 4; | |
1939 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1940 | Lpnt = 0; | |
1941 | /* assert( spnt->struc_numb > 0 ); */ | |
1942 | VMS_Store_Struct (spnt->struc_numb); /* output 4 more bytes */ | |
1943 | } | |
1944 | ||
1945 | /* Formally define a builtin type, so that it can serve as the target of | |
1946 | an indirect reference. It makes bitfield_suffix() easier by avoiding | |
1947 | the need to use a forward reference for the first occurrence of each | |
1948 | type used in a bitfield. */ | |
1949 | static void | |
1950 | setup_basic_type (spnt) | |
1951 | struct VMS_DBG_Symbol *spnt; | |
1952 | { | |
1953 | #ifdef SETUP_BASIC_TYPES | |
1954 | /* This would be very useful if "novel length" fields actually worked | |
1955 | with basic types like they do with enumerated types. However, | |
1956 | they do not, so this isn't worth doing just so that you can use | |
1957 | EXAMINE/TYPE=(__long_long_int) instead of EXAMINE/QUAD. */ | |
1958 | char *p; | |
1959 | #ifndef SETUP_SYNONYM_TYPES | |
1960 | /* This determines whether compatible things like `int' and `long int' | |
1961 | ought to have distinct type records rather than sharing one. */ | |
1962 | struct VMS_DBG_Symbol *spnt2; | |
1963 | ||
1964 | /* first check whether this type has already been seen by another name */ | |
1965 | for (spnt2 = VMS_Symbol_type_list; spnt2; spnt2 = spnt2->next) | |
1966 | if (spnt2 != spnt && spnt2->VMS_type == spnt->VMS_type) | |
1967 | { | |
1968 | spnt->struc_numb = spnt2->struc_numb; | |
1969 | return; | |
1970 | } | |
1971 | #endif | |
1972 | ||
1973 | /* `structure number' doesn't really mean `structure'; it means an index | |
1974 | into a linker maintained set of saved locations which can be referenced | |
1975 | again later. */ | |
1976 | spnt->struc_numb = ++structure_count; | |
1977 | VMS_Def_Struct (spnt->struc_numb); /* remember where this type lives */ | |
1978 | /* define the simple scalar type */ | |
1979 | Local[Lpnt++] = 6 + strlen (symbol_name) + 2; /* rec.len */ | |
1980 | Local[Lpnt++] = DST_K_TYPSPEC; /* rec.typ==type specification */ | |
1981 | Local[Lpnt++] = strlen (symbol_name) + 2; | |
1982 | Local[Lpnt++] = '_'; /* prefix name with "__" */ | |
1983 | Local[Lpnt++] = '_'; | |
1984 | for (p = symbol_name; *p; p++) | |
1985 | Local[Lpnt++] = *p == ' ' ? '_' : *p; | |
1986 | COPY_SHORT(&Local[Lpnt], 2); /* typ.len==2 */ | |
1987 | Lpnt += 2; | |
1988 | Local[Lpnt++] = DST_K_TS_ATOM; /* typ.kind is simple type */ | |
1989 | Local[Lpnt++] = spnt->VMS_type; /* typ.type */ | |
1990 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1991 | Lpnt = 0; | |
1992 | #endif /* SETUP_BASIC_TYPES */ | |
1993 | } | |
1994 | ||
1995 | /* This routine generates a symbol definition for a C symbol for the debugger. | |
1996 | * It takes a psect and offset for global symbols; if psect < 0, then this is | |
be9618de KR |
1997 | * a local variable and the offset is relative to FP. In this case it can |
1998 | * be either a variable (Offset < 0) or a parameter (Offset > 0). | |
1999 | */ | |
2000 | static | |
2001 | VMS_DBG_record (spnt, Psect, Offset, Name) | |
2002 | struct VMS_DBG_Symbol *spnt; | |
2003 | int Psect; | |
2004 | int Offset; | |
2005 | char *Name; | |
2006 | { | |
2007 | char *pnt; | |
2008 | char *Name_pnt; | |
2009 | int j; | |
a9918088 | 2010 | int len; |
be9618de | 2011 | int i = 0; |
a9918088 | 2012 | |
be9618de | 2013 | Name_pnt = fix_name (Name); /* if there are bad characters in name, convert them */ |
a9918088 | 2014 | len = strlen(Name_pnt); |
be9618de KR |
2015 | if (Psect < 0) |
2016 | { /* this is a local variable, referenced to SP */ | |
a9918088 | 2017 | Local[i++] = 7 + len; |
be9618de | 2018 | Local[i++] = spnt->VMS_type; |
a9918088 | 2019 | Local[i++] = (Offset > 0) ? DBG_C_FUNCTION_PARAM : DBG_C_LOCAL_SYM; |
494a6c05 KR |
2020 | COPY_LONG (&Local[i], Offset); |
2021 | i += 4; | |
be9618de KR |
2022 | } |
2023 | else | |
2024 | { | |
a9918088 | 2025 | Local[i++] = 7 + len; |
be9618de | 2026 | Local[i++] = spnt->VMS_type; |
a9918088 | 2027 | Local[i++] = DST_K_VALKIND_ADDR; |
be9618de KR |
2028 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2029 | i = 0; | |
2030 | VMS_Set_Data (Psect, Offset, OBJ_S_C_DBG, 0); | |
2031 | } | |
a9918088 | 2032 | Local[i++] = len; |
be9618de KR |
2033 | while (*Name_pnt != '\0') |
2034 | Local[i++] = *Name_pnt++; | |
2035 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2036 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2037 | generate_suffix (spnt, 0); | |
2038 | } | |
2039 | ||
2040 | ||
2041 | /* This routine parses the stabs entries in order to make the definition | |
2042 | * for the debugger of local symbols and function parameters | |
2043 | */ | |
2044 | static int | |
2045 | VMS_local_stab_Parse (sp) | |
2046 | symbolS *sp; | |
2047 | { | |
2048 | char *pnt; | |
2049 | char *pnt1; | |
2050 | char *str; | |
2051 | struct VMS_DBG_Symbol *spnt; | |
2052 | struct VMS_Symbol *vsp; | |
2053 | int dbx_type; | |
be9618de KR |
2054 | dbx_type = 0; |
2055 | str = S_GET_NAME (sp); | |
2056 | pnt = (char *) strchr (str, ':'); | |
2057 | if (pnt == (char *) NULL) | |
2058 | return; /* no colon present */ | |
2059 | pnt1 = pnt++; /* save this for later, and skip colon */ | |
2060 | if (*pnt == 'c') | |
2061 | return 0; /* ignore static constants */ | |
2062 | /* there is one little catch that we must be aware of. Sometimes function | |
2063 | * parameters are optimized into registers, and the compiler, in its infiite | |
2064 | * wisdom outputs stabs records for *both*. In general we want to use the | |
2065 | * register if it is present, so we must search the rest of the symbols for | |
2066 | * this function to see if this parameter is assigned to a register. | |
2067 | */ | |
2068 | { | |
2069 | char *str1; | |
2070 | char *pnt2; | |
2071 | symbolS *sp1; | |
2072 | if (*pnt == 'p') | |
2073 | { | |
2074 | for (sp1 = symbol_next (sp); sp1; sp1 = symbol_next (sp1)) | |
2075 | { | |
2076 | if (!S_IS_DEBUG (sp1)) | |
2077 | continue; | |
2078 | if (S_GET_RAW_TYPE (sp1) == N_FUN) | |
2079 | { | |
2080 | char * pnt3=(char*) strchr (S_GET_NAME (sp1), ':') + 1; | |
2081 | if (*pnt3 == 'F' || *pnt3 == 'f') break; | |
c06e55d9 | 2082 | } |
be9618de KR |
2083 | if (S_GET_RAW_TYPE (sp1) != N_RSYM) |
2084 | continue; | |
2085 | str1 = S_GET_NAME (sp1); /* and get the name */ | |
2086 | pnt2 = str; | |
2087 | while (*pnt2 != ':') | |
2088 | { | |
2089 | if (*pnt2 != *str1) | |
2090 | break; | |
2091 | pnt2++; | |
2092 | str1++; | |
c06e55d9 | 2093 | } |
be9618de KR |
2094 | if ((*str1 != ':') || (*pnt2 != ':')) |
2095 | continue; | |
2096 | return; /* they are the same! lets skip this one */ | |
c06e55d9 | 2097 | } /* for */ |
be9618de KR |
2098 | /* first find the dbx symbol type from list, and then find VMS type */ |
2099 | pnt++; /* skip p in case no register */ | |
c06e55d9 KR |
2100 | } /* if */ |
2101 | } /* p block */ | |
be9618de KR |
2102 | pnt = cvt_integer (pnt, &dbx_type); |
2103 | spnt = find_symbol (dbx_type); | |
a9918088 | 2104 | if (!spnt) |
be9618de KR |
2105 | return 0; /*Dunno what this is*/ |
2106 | *pnt1 = '\0'; | |
2107 | VMS_DBG_record (spnt, -1, S_GET_VALUE (sp), str); | |
2108 | *pnt1 = ':'; /* and restore the string */ | |
2109 | return 1; | |
2110 | } | |
2111 | ||
2112 | /* This routine parses a stabs entry to find the information required to define | |
2113 | * a variable. It is used for global and static variables. | |
2114 | * Basically we need to know the address of the symbol. With older versions | |
2115 | * of the compiler, const symbols are | |
2116 | * treated differently, in that if they are global they are written into the | |
2117 | * text psect. The global symbol entry for such a const is actually written | |
2118 | * as a program entry point (Yuk!!), so if we cannot find a symbol in the list | |
2119 | * of psects, we must search the entry points as well. static consts are even | |
2120 | * harder, since they are never assigned a memory address. The compiler passes | |
2121 | * a stab to tell us the value, but I am not sure what to do with it. | |
2122 | */ | |
2123 | ||
2124 | static | |
2125 | VMS_stab_parse (sp, expected_type, type1, type2, Text_Psect) | |
2126 | symbolS *sp; | |
2127 | char expected_type; | |
2128 | int type1, type2, Text_Psect; | |
2129 | { | |
2130 | char *pnt; | |
2131 | char *pnt1; | |
2132 | char *str; | |
2133 | symbolS *sp1; | |
2134 | struct VMS_DBG_Symbol *spnt; | |
2135 | struct VMS_Symbol *vsp; | |
2136 | int dbx_type; | |
be9618de KR |
2137 | dbx_type = 0; |
2138 | str = S_GET_NAME (sp); | |
2139 | pnt = (char *) strchr (str, ':'); | |
2140 | if (pnt == (char *) NULL) | |
2141 | return; /* no colon present */ | |
2142 | pnt1 = pnt; /* save this for later*/ | |
2143 | pnt++; | |
2144 | if (*pnt == expected_type) | |
2145 | { | |
2146 | pnt = cvt_integer (pnt + 1, &dbx_type); | |
2147 | spnt = find_symbol (dbx_type); | |
2148 | if (spnt == (struct VMS_DBG_Symbol *) NULL) | |
2149 | return 0; /*Dunno what this is*/ | |
2150 | /* now we need to search the symbol table to find the psect and offset for | |
2151 | * this variable. | |
2152 | */ | |
2153 | *pnt1 = '\0'; | |
2154 | vsp = VMS_Symbols; | |
2155 | while (vsp != (struct VMS_Symbol *) NULL) | |
2156 | { | |
2157 | pnt = S_GET_NAME (vsp->Symbol); | |
2158 | if (pnt != (char *) NULL) | |
2159 | if (*pnt++ == '_') | |
2160 | /* make sure name is the same, and make sure correct symbol type */ | |
2161 | if ((strlen (pnt) == strlen (str)) && (strcmp (pnt, str) == 0) | |
2162 | && ((S_GET_RAW_TYPE (vsp->Symbol) == type1) || | |
2163 | (S_GET_RAW_TYPE (vsp->Symbol) == type2))) | |
2164 | break; | |
2165 | vsp = vsp->Next; | |
c06e55d9 | 2166 | } |
be9618de KR |
2167 | if (vsp != (struct VMS_Symbol *) NULL) |
2168 | { | |
2169 | VMS_DBG_record (spnt, vsp->Psect_Index, vsp->Psect_Offset, str); | |
2170 | *pnt1 = ':'; /* and restore the string */ | |
2171 | return 1; | |
c06e55d9 | 2172 | } |
be9618de KR |
2173 | /* the symbol was not in the symbol list, but it may be an "entry point" |
2174 | if it was a constant */ | |
2175 | for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) | |
2176 | { | |
2177 | /* | |
2178 | * Dispatch on STAB type | |
2179 | */ | |
2180 | if (S_IS_DEBUG (sp1) || (S_GET_TYPE (sp1) != N_TEXT)) | |
2181 | continue; | |
2182 | pnt = S_GET_NAME (sp1); | |
2183 | if (*pnt == '_') | |
2184 | pnt++; | |
2185 | if (strcmp (pnt, str) == 0) | |
2186 | { | |
2187 | if (!gave_compiler_message && expected_type == 'G') | |
2188 | { | |
2189 | printf ("***Warning - the assembly code generated by the compiler has placed\n"); | |
2190 | printf ("global constant(s) in the text psect. These will not be available to\n"); | |
2191 | printf ("other modules, since this is not the correct way to handle this. You\n"); | |
2192 | printf ("have two options: 1) get a patched compiler that does not put global\n"); | |
2193 | printf ("constants in the text psect, or 2) remove the 'const' keyword from\n"); | |
2194 | printf ("definitions of global variables in your source module(s). Don't say\n"); | |
2195 | printf ("I didn't warn you!"); | |
2196 | gave_compiler_message = 1; | |
c06e55d9 | 2197 | } |
be9618de KR |
2198 | VMS_DBG_record (spnt, |
2199 | Text_Psect, | |
2200 | S_GET_VALUE (sp1), | |
2201 | str); | |
2202 | *pnt1 = ':'; | |
2203 | *S_GET_NAME (sp1) = 'L'; | |
2204 | /* fool assembler to not output this | |
2205 | * as a routine in the TBT */ | |
2206 | return 1; | |
c06e55d9 KR |
2207 | } |
2208 | } | |
2209 | } | |
be9618de KR |
2210 | *pnt1 = ':'; /* and restore the string */ |
2211 | return 0; | |
2212 | } | |
2213 | ||
2214 | static | |
2215 | VMS_GSYM_Parse (sp, Text_Psect) | |
2216 | symbolS *sp; | |
2217 | int Text_Psect; | |
2218 | { /* Global variables */ | |
2219 | VMS_stab_parse (sp, 'G', (N_UNDF | N_EXT), (N_DATA | N_EXT), Text_Psect); | |
2220 | } | |
2221 | ||
2222 | ||
2223 | static | |
2224 | VMS_LCSYM_Parse (sp, Text_Psect) | |
2225 | symbolS *sp; | |
2226 | int Text_Psect; | |
2227 | { /* Static symbols - uninitialized */ | |
2228 | VMS_stab_parse (sp, 'S', N_BSS, -1, Text_Psect); | |
2229 | } | |
2230 | ||
2231 | static | |
2232 | VMS_STSYM_Parse (sp, Text_Psect) | |
2233 | symbolS *sp; | |
2234 | int Text_Psect; | |
2235 | { /* Static symbols - initialized */ | |
2236 | VMS_stab_parse (sp, 'S', N_DATA, -1, Text_Psect); | |
2237 | } | |
2238 | ||
2239 | ||
2240 | /* for register symbols, we must figure out what range of addresses within the | |
2241 | * psect are valid. We will use the brackets in the stab directives to give us | |
2242 | * guidance as to the PC range that this variable is in scope. I am still not | |
2243 | * completely comfortable with this but as I learn more, I seem to get a better | |
2244 | * handle on what is going on. | |
2245 | * Caveat Emptor. | |
2246 | */ | |
2247 | static | |
2248 | VMS_RSYM_Parse (sp, Current_Routine, Text_Psect) | |
2249 | symbolS *sp, *Current_Routine; | |
2250 | int Text_Psect; | |
2251 | { | |
2252 | char *pnt; | |
2253 | char *pnt1; | |
2254 | char *str; | |
2255 | int dbx_type; | |
2256 | struct VMS_DBG_Symbol *spnt; | |
2257 | int j; | |
a9918088 | 2258 | int len; |
be9618de KR |
2259 | int i = 0; |
2260 | int bcnt = 0; | |
2261 | int Min_Offset = -1; /* min PC of validity */ | |
2262 | int Max_Offset = 0; /* max PC of validity */ | |
2263 | symbolS *symbolP; | |
a9918088 | 2264 | |
be9618de KR |
2265 | for (symbolP = sp; symbolP; symbolP = symbol_next (symbolP)) |
2266 | { | |
2267 | /* | |
2268 | * Dispatch on STAB type | |
2269 | */ | |
2270 | switch (S_GET_RAW_TYPE (symbolP)) | |
2271 | { | |
2272 | case N_LBRAC: | |
2273 | if (bcnt++ == 0) | |
2274 | Min_Offset = S_GET_VALUE (symbolP); | |
2275 | break; | |
2276 | case N_RBRAC: | |
2277 | if (--bcnt == 0) | |
2278 | Max_Offset = | |
2279 | S_GET_VALUE (symbolP) - 1; | |
2280 | break; | |
2281 | } | |
2282 | if ((Min_Offset != -1) && (bcnt == 0)) | |
2283 | break; | |
2284 | if (S_GET_RAW_TYPE (symbolP) == N_FUN) | |
2285 | { | |
2286 | pnt=(char*) strchr (S_GET_NAME (symbolP), ':') + 1; | |
2287 | if (*pnt == 'F' || *pnt == 'f') break; | |
c06e55d9 | 2288 | } |
be9618de KR |
2289 | } |
2290 | /* check to see that the addresses were defined. If not, then there were no | |
2291 | * brackets in the function, and we must try to search for the next function | |
2292 | * Since functions can be in any order, we should search all of the symbol list | |
2293 | * to find the correct ending address. */ | |
2294 | if (Min_Offset == -1) | |
2295 | { | |
2296 | int Max_Source_Offset; | |
2297 | int This_Offset; | |
2298 | Min_Offset = S_GET_VALUE (sp); | |
2299 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
2300 | { | |
2301 | /* | |
2302 | * Dispatch on STAB type | |
2303 | */ | |
2304 | This_Offset = S_GET_VALUE (symbolP); | |
2305 | switch (S_GET_RAW_TYPE (symbolP)) | |
2306 | { | |
2307 | case N_TEXT | N_EXT: | |
2308 | if ((This_Offset > Min_Offset) && (This_Offset < Max_Offset)) | |
2309 | Max_Offset = This_Offset; | |
2310 | break; | |
2311 | case N_SLINE: | |
2312 | if (This_Offset > Max_Source_Offset) | |
2313 | Max_Source_Offset = This_Offset; | |
2314 | } | |
2315 | } | |
2316 | /* if this is the last routine, then we use the PC of the last source line | |
2317 | * as a marker of the max PC for which this reg is valid */ | |
2318 | if (Max_Offset == 0x7fffffff) | |
2319 | Max_Offset = Max_Source_Offset; | |
c06e55d9 | 2320 | } |
be9618de KR |
2321 | dbx_type = 0; |
2322 | str = S_GET_NAME (sp); | |
2323 | pnt = (char *) strchr (str, ':'); | |
2324 | if (pnt == (char *) NULL) | |
2325 | return; /* no colon present */ | |
2326 | pnt1 = pnt; /* save this for later*/ | |
2327 | pnt++; | |
2328 | if (*pnt != 'r') | |
2329 | return 0; | |
2330 | pnt = cvt_integer (pnt + 1, &dbx_type); | |
2331 | spnt = find_symbol (dbx_type); | |
a9918088 | 2332 | if (!spnt) |
be9618de KR |
2333 | return 0; /*Dunno what this is yet*/ |
2334 | *pnt1 = '\0'; | |
2335 | pnt = fix_name (S_GET_NAME (sp)); /* if there are bad characters in name, convert them */ | |
a9918088 KR |
2336 | len = strlen(pnt); |
2337 | Local[i++] = 25 + len; | |
be9618de | 2338 | Local[i++] = spnt->VMS_type; |
a9918088 KR |
2339 | Local[i++] = DST_K_VFLAGS_TVS; /* trailing value specified */ |
2340 | COPY_LONG(&Local[i], 1 + len); /* relative offset, beyond name */ | |
2341 | i += 4; | |
2342 | Local[i++] = len; /* name length (ascic prefix) */ | |
be9618de KR |
2343 | while (*pnt != '\0') |
2344 | Local[i++] = *pnt++; | |
a9918088 KR |
2345 | Local[i++] = DST_K_VS_FOLLOWS; /* value specification follows */ |
2346 | COPY_SHORT(&Local[i], 15); /* length of rest of record */ | |
2347 | i += 2; | |
2348 | Local[i++] = DST_K_VS_ALLOC_SPLIT; /* split lifetime */ | |
2349 | Local[i++] = 1; /* one binding follows */ | |
be9618de KR |
2350 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2351 | i = 0; | |
2352 | VMS_Set_Data (Text_Psect, Min_Offset, OBJ_S_C_DBG, 1); | |
2353 | VMS_Set_Data (Text_Psect, Max_Offset, OBJ_S_C_DBG, 1); | |
a9918088 KR |
2354 | Local[i++] = DST_K_VALKIND_REG; /* nested value spec */ |
2355 | COPY_LONG(&Local[i], S_GET_VALUE (sp)); | |
2356 | i += 4; | |
be9618de KR |
2357 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2358 | *pnt1 = ':'; | |
2359 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2360 | generate_suffix (spnt, 0); | |
2361 | } | |
2362 | ||
2363 | /* this function examines a structure definition, checking all of the elements | |
2364 | * to make sure that all of them are fully defined. The only thing that we | |
2365 | * kick out are arrays of undefined structs, since we do not know how big | |
2366 | * they are. All others we can handle with a normal forward reference. | |
2367 | */ | |
2368 | static int | |
2369 | forward_reference (pnt) | |
2370 | char *pnt; | |
2371 | { | |
2372 | int i; | |
2373 | struct VMS_DBG_Symbol *spnt; | |
2374 | struct VMS_DBG_Symbol *spnt1; | |
2375 | pnt = cvt_integer (pnt + 1, &i); | |
2376 | if (*pnt == ';') | |
2377 | return 0; /* no forward references */ | |
2378 | do | |
2379 | { | |
2380 | pnt = (char *) strchr (pnt, ':'); | |
2381 | pnt = cvt_integer (pnt + 1, &i); | |
2382 | spnt = find_symbol (i); | |
494a6c05 KR |
2383 | if(spnt != (struct VMS_DBG_Symbol*) NULL) { |
2384 | while((spnt->advanced == POINTER) || (spnt->advanced == ARRAY)) | |
be9618de KR |
2385 | { |
2386 | i = spnt->type2; | |
2387 | spnt1 = find_symbol (spnt->type2); | |
2388 | if ((spnt->advanced == ARRAY) && | |
2389 | (spnt1 == (struct VMS_DBG_Symbol *) NULL)) | |
2390 | return 1; | |
2391 | if (spnt1 == (struct VMS_DBG_Symbol *) NULL) | |
2392 | break; | |
2393 | spnt = spnt1; | |
c06e55d9 KR |
2394 | } |
2395 | } | |
be9618de KR |
2396 | pnt = cvt_integer (pnt + 1, &i); |
2397 | pnt = cvt_integer (pnt + 1, &i); | |
2398 | } while (*++pnt != ';'); | |
2399 | return 0; /* no forward refences found */ | |
2400 | } | |
2401 | ||
494a6c05 KR |
2402 | /* Used to check a single element of a structure on the final pass*/ |
2403 | ||
2404 | static int | |
2405 | final_forward_reference (spnt) | |
a9918088 | 2406 | struct VMS_DBG_Symbol *spnt; |
494a6c05 | 2407 | { |
a9918088 KR |
2408 | struct VMS_DBG_Symbol *spnt1; |
2409 | ||
2410 | while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) | |
2411 | { | |
2412 | spnt1 = find_symbol(spnt->type2); | |
2413 | if (spnt->advanced == ARRAY && !spnt1) return 1; | |
2414 | spnt = spnt1; | |
2415 | } | |
2416 | return 0; /* no forward refences found */ | |
494a6c05 KR |
2417 | } |
2418 | ||
be9618de KR |
2419 | /* This routine parses the stabs directives to find any definitions of dbx type |
2420 | * numbers. It makes a note of all of them, creating a structure element | |
2421 | * of VMS_DBG_Symbol that describes it. This also generates the info for the | |
2422 | * debugger that describes the struct/union/enum, so that further references | |
2423 | * to these data types will be by number | |
2424 | * We have to process pointers right away, since there can be references | |
2425 | * to them later in the same stabs directive. We cannot have forward | |
2426 | * references to pointers, (but we can have a forward reference to a pointer to | |
2427 | * a structure/enum/union) and this is why we process them immediately. | |
2428 | * After we process the pointer, then we search for defs that are nested even | |
2429 | * deeper. | |
494a6c05 KR |
2430 | * 8/15/92: We have to process arrays right away too, because there can |
2431 | * be multiple references to identical array types in one structure | |
2432 | * definition, and only the first one has the definition. (We tend to | |
2433 | * parse from the back going forward. | |
be9618de KR |
2434 | */ |
2435 | static int | |
2436 | VMS_typedef_parse (str) | |
2437 | char *str; | |
2438 | { | |
2439 | char *pnt; | |
2440 | char *pnt1; | |
2441 | char *pnt2; | |
2442 | int i; | |
2443 | int dtype; | |
2444 | struct forward_ref *fpnt; | |
a9918088 | 2445 | int i1, i2, i3, len; |
be9618de KR |
2446 | int convert_integer; |
2447 | struct VMS_DBG_Symbol *spnt; | |
2448 | struct VMS_DBG_Symbol *spnt1; | |
a9918088 | 2449 | |
be9618de KR |
2450 | /* check for any nested def's */ |
2451 | pnt = (char *) strchr (str + 1, '='); | |
494a6c05 KR |
2452 | if ((pnt != (char *) NULL) && (*(str + 1) != '*') |
2453 | && (str[1] != 'a' || str[2] != 'r')) | |
be9618de KR |
2454 | if (VMS_typedef_parse (pnt) == 1) |
2455 | return 1; | |
2456 | /* now find dbx_type of entry */ | |
2457 | pnt = str - 1; | |
2458 | if (*pnt == 'c') | |
2459 | { /* check for static constants */ | |
2460 | *str = '\0'; /* for now we ignore them */ | |
2461 | return 0; | |
c06e55d9 | 2462 | } |
be9618de KR |
2463 | while ((*pnt <= '9') && (*pnt >= '0')) |
2464 | pnt--; | |
2465 | pnt++; /* and get back to the number */ | |
2466 | cvt_integer (pnt, &i1); | |
2467 | spnt = find_symbol (i1); | |
2468 | /* first we see if this has been defined already, due to a forward reference*/ | |
a9918088 | 2469 | if (!spnt) |
be9618de | 2470 | { |
c06e55d9 KR |
2471 | spnt = (struct VMS_DBG_Symbol *) xmalloc (sizeof (struct VMS_DBG_Symbol)); |
2472 | spnt->next = VMS_Symbol_type_list; | |
2473 | VMS_Symbol_type_list = spnt; | |
be9618de | 2474 | spnt->dbx_type = i1; /* and save the type */ |
a9918088 KR |
2475 | spnt->type2 = spnt->VMS_type = spnt->data_size = 0; |
2476 | spnt->index_min = spnt->index_max = spnt->struc_numb = 0; | |
c06e55d9 | 2477 | } |
be9618de KR |
2478 | /* for structs and unions, do a partial parse, otherwise we sometimes get |
2479 | * circular definitions that are impossible to resolve. We read enough info | |
2480 | * so that any reference to this type has enough info to be resolved | |
2481 | */ | |
2482 | pnt = str + 1; /* point to character past equal sign */ | |
2483 | if ((*pnt == 'u') || (*pnt == 's')) | |
2484 | { | |
c06e55d9 | 2485 | } |
be9618de KR |
2486 | if ((*pnt <= '9') && (*pnt >= '0')) |
2487 | { | |
2488 | if (type_check ("void")) | |
2489 | { /* this is the void symbol */ | |
2490 | *str = '\0'; | |
2491 | spnt->advanced = VOID; | |
2492 | return 0; | |
c06e55d9 | 2493 | } |
be9618de | 2494 | if (type_check ("unknown type")) |
a9918088 | 2495 | { |
be9618de KR |
2496 | *str = '\0'; |
2497 | spnt->advanced = UNKNOWN; | |
2498 | return 0; | |
c06e55d9 | 2499 | } |
494a6c05 KR |
2500 | pnt1 = cvt_integer(pnt,&i1); |
2501 | if(i1 != spnt->dbx_type) | |
2502 | { | |
2503 | spnt->advanced = ALIAS; | |
2504 | spnt->type2 = i1; | |
2505 | strcpy(str, pnt1); | |
2506 | return 0; | |
2507 | } | |
be9618de KR |
2508 | printf ("gcc-as warning(debugger output):"); |
2509 | printf (" %d is an unknown untyped variable.\n", spnt->dbx_type); | |
2510 | return 1; /* do not know what this is */ | |
c06e55d9 | 2511 | } |
be9618de KR |
2512 | /* now define this module*/ |
2513 | pnt = str + 1; /* point to character past equal sign */ | |
2514 | switch (*pnt) | |
2515 | { | |
2516 | case 'r': | |
2517 | spnt->advanced = BASIC; | |
2518 | if (type_check ("int")) | |
2519 | { | |
2520 | spnt->VMS_type = DBG_S_C_SLINT; | |
2521 | spnt->data_size = 4; | |
2522 | } | |
2523 | else if (type_check ("long int")) | |
2524 | { | |
2525 | spnt->VMS_type = DBG_S_C_SLINT; | |
2526 | spnt->data_size = 4; | |
2527 | } | |
2528 | else if (type_check ("unsigned int")) | |
2529 | { | |
2530 | spnt->VMS_type = DBG_S_C_ULINT; | |
2531 | spnt->data_size = 4; | |
2532 | } | |
2533 | else if (type_check ("long unsigned int")) | |
2534 | { | |
2535 | spnt->VMS_type = DBG_S_C_ULINT; | |
2536 | spnt->data_size = 4; | |
2537 | } | |
2538 | else if (type_check ("short int")) | |
2539 | { | |
2540 | spnt->VMS_type = DBG_S_C_SSINT; | |
2541 | spnt->data_size = 2; | |
2542 | } | |
2543 | else if (type_check ("short unsigned int")) | |
2544 | { | |
2545 | spnt->VMS_type = DBG_S_C_USINT; | |
2546 | spnt->data_size = 2; | |
2547 | } | |
2548 | else if (type_check ("char")) | |
2549 | { | |
2550 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2551 | spnt->data_size = 1; | |
2552 | } | |
2553 | else if (type_check ("signed char")) | |
2554 | { | |
2555 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2556 | spnt->data_size = 1; | |
2557 | } | |
2558 | else if (type_check ("unsigned char")) | |
2559 | { | |
2560 | spnt->VMS_type = DBG_S_C_UCHAR; | |
2561 | spnt->data_size = 1; | |
2562 | } | |
2563 | else if (type_check ("float")) | |
2564 | { | |
2565 | spnt->VMS_type = DBG_S_C_REAL4; | |
2566 | spnt->data_size = 4; | |
2567 | } | |
2568 | else if (type_check ("double")) | |
2569 | { | |
a9918088 | 2570 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; |
be9618de KR |
2571 | spnt->data_size = 8; |
2572 | } | |
c06e55d9 KR |
2573 | else if (type_check ("long double")) |
2574 | { | |
2575 | /* same as double, at least for now */ | |
a9918088 | 2576 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; |
c06e55d9 KR |
2577 | spnt->data_size = 8; |
2578 | } | |
2579 | else if (type_check ("long long int")) | |
2580 | { | |
2581 | spnt->VMS_type = DBG_S_C_SQUAD; /* signed quadword */ | |
2582 | spnt->data_size = 8; | |
2583 | } | |
2584 | else if (type_check ("long long unsigned int")) | |
2585 | { | |
2586 | spnt->VMS_type = DBG_S_C_UQUAD; /* unsigned quadword */ | |
2587 | spnt->data_size = 8; | |
2588 | } | |
675ad6dc KR |
2589 | else if (type_check ("complex float")) |
2590 | { | |
2591 | spnt->VMS_type = DBG_S_C_COMPLX4; | |
2592 | spnt->data_size = 2 * 4; | |
2593 | } | |
2594 | else if (type_check ("complex double")) | |
2595 | { | |
a9918088 | 2596 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; |
675ad6dc KR |
2597 | spnt->data_size = 2 * 8; |
2598 | } | |
2599 | else if (type_check ("complex long double")) | |
2600 | { | |
2601 | /* same as complex double, at least for now */ | |
a9918088 | 2602 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; |
675ad6dc KR |
2603 | spnt->data_size = 2 * 8; |
2604 | } | |
c06e55d9 KR |
2605 | else |
2606 | { | |
675ad6dc KR |
2607 | /* [pr] |
2608 | * Shouldn't get here, but if we do, something | |
2609 | * more substantial ought to be done... | |
2610 | */ | |
c06e55d9 KR |
2611 | spnt->VMS_type = 0; |
2612 | spnt->data_size = 0; | |
2613 | } | |
a9918088 KR |
2614 | if (spnt->VMS_type != 0) |
2615 | setup_basic_type(spnt); | |
be9618de KR |
2616 | pnt1 = (char *) strchr (str, ';') + 1; |
2617 | break; | |
2618 | case 's': | |
2619 | case 'u': | |
a9918088 | 2620 | spnt->advanced = (*pnt == 's') ? STRUCT : UNION; |
be9618de KR |
2621 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; |
2622 | pnt1 = cvt_integer (pnt + 1, &spnt->data_size); | |
494a6c05 | 2623 | if (!final_pass && forward_reference(pnt)) |
be9618de KR |
2624 | { |
2625 | spnt->struc_numb = -1; | |
2626 | return 1; | |
2627 | } | |
2628 | spnt->struc_numb = ++structure_count; | |
2629 | pnt1--; | |
2630 | pnt = get_struct_name (str); | |
2631 | VMS_Def_Struct (spnt->struc_numb); | |
a9918088 KR |
2632 | i = 0; |
2633 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) | |
2634 | if (fpnt->dbx_type == spnt->dbx_type) | |
2635 | { | |
2636 | fpnt->resolved = 'Y'; | |
2637 | VMS_Set_Struct (fpnt->struc_numb); | |
2638 | VMS_Store_Struct (spnt->struc_numb); | |
2639 | i++; | |
2640 | } | |
2641 | if (i > 0) | |
2642 | VMS_Set_Struct (spnt->struc_numb); | |
be9618de KR |
2643 | i = 0; |
2644 | Local[i++] = 11 + strlen (pnt); | |
2645 | Local[i++] = DBG_S_C_STRUCT_START; | |
a9918088 KR |
2646 | Local[i++] = DST_K_VFLAGS_NOVAL; /* structure definition only */ |
2647 | COPY_LONG(&Local[i], 0L); /* hence value is unused */ | |
2648 | i += 4; | |
be9618de KR |
2649 | Local[i++] = strlen (pnt); |
2650 | pnt2 = pnt; | |
2651 | while (*pnt2 != '\0') | |
2652 | Local[i++] = *pnt2++; | |
2653 | i2 = spnt->data_size * 8; /* number of bits */ | |
494a6c05 KR |
2654 | COPY_LONG(&Local[i], i2); |
2655 | i += 4; | |
be9618de KR |
2656 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2657 | i = 0; | |
2658 | if (pnt != symbol_name) | |
2659 | { | |
2660 | pnt += strlen (pnt); | |
2661 | *pnt = ':'; | |
c06e55d9 | 2662 | } /* replace colon for later */ |
be9618de KR |
2663 | while (*++pnt1 != ';') |
2664 | { | |
2665 | pnt = (char *) strchr (pnt1, ':'); | |
2666 | *pnt = '\0'; | |
2667 | pnt2 = pnt1; | |
2668 | pnt1 = cvt_integer (pnt + 1, &dtype); | |
2669 | pnt1 = cvt_integer (pnt1 + 1, &i2); | |
2670 | pnt1 = cvt_integer (pnt1 + 1, &i3); | |
a9918088 KR |
2671 | spnt1 = find_symbol (dtype); |
2672 | len = strlen (pnt2); | |
2673 | if (spnt1 && (spnt1->advanced == BASIC || spnt1->advanced == ENUM) | |
2674 | && ((i3 != spnt1->data_size * 8) || (i2 % 8 != 0))) | |
be9618de | 2675 | { /* bitfield */ |
a9918088 KR |
2676 | if (USE_BITSTRING_DESCRIPTOR (spnt1)) |
2677 | { | |
2678 | /* This uses a type descriptor, which doesn't work if | |
2679 | the enclosing structure has been placed in a register. | |
2680 | Also, enum bitfields degenerate to simple integers. */ | |
2681 | int unsigned_type = (spnt1->VMS_type == DBG_S_C_ULINT | |
2682 | || spnt1->VMS_type == DBG_S_C_USINT | |
2683 | || spnt1->VMS_type == DBG_S_C_UCHAR | |
2684 | || spnt1->VMS_type == DBG_S_C_UQUAD | |
2685 | || spnt1->advanced == ENUM); /* (approximate) */ | |
2686 | Apoint = 0; | |
2687 | push (19 + len, 1); | |
2688 | push (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); | |
2689 | push (DST_K_VFLAGS_DSC, 1); /* specified by descriptor */ | |
2690 | push (1 + len, 4); /* relative offset to descriptor */ | |
2691 | push (len, 1); /* length byte (ascic prefix) */ | |
2692 | while (*pnt2 != '\0') /* name bytes */ | |
2693 | push (*pnt2++, 1); | |
2694 | push (i3, 2); /* dsc length == size of bitfield */ | |
2695 | /* dsc type == un?signed bitfield */ | |
2696 | push (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); | |
2697 | push (DSC_K_CLASS_UBS, 1); /* dsc class == unaligned bitstring */ | |
2698 | push (0x00, 4); /* dsc pointer == zeroes */ | |
2699 | push (i2, 4); /* start position */ | |
2700 | VMS_Store_Immediate_Data (Asuffix, Apoint, OBJ_S_C_DBG); | |
2701 | Apoint = 0; | |
2702 | } | |
2703 | else | |
2704 | { | |
2705 | /* Use a "novel length" type specification, which works | |
2706 | right for register structures and for enum bitfields | |
2707 | but results in larger object modules. */ | |
2708 | Local[i++] = 7 + len; | |
2709 | Local[i++] = DBG_S_C_ADVANCED_TYPE; /* type spec follows */ | |
2710 | Local[i++] = DBG_S_C_STRUCT_ITEM; /* value is a bit offset */ | |
2711 | COPY_LONG (&Local[i], i2); /* bit offset */ | |
2712 | i += 4; | |
2713 | Local[i++] = strlen (pnt2); | |
2714 | while (*pnt2 != '\0') | |
2715 | Local[i++] = *pnt2++; | |
2716 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2717 | i = 0; | |
2718 | bitfield_suffix (spnt1, i3); | |
2719 | } | |
be9618de KR |
2720 | } |
2721 | else | |
a9918088 | 2722 | { /* not a bitfield */ |
be9618de | 2723 | /* check if this is a forward reference */ |
494a6c05 KR |
2724 | if(final_pass && final_forward_reference(spnt1)) |
2725 | { | |
2726 | printf("gcc-as warning(debugger output):"); | |
a9918088 | 2727 | printf("structure element `%s' has undefined type\n",pnt2); |
494a6c05 KR |
2728 | continue; |
2729 | } | |
a9918088 KR |
2730 | Local[i++] = 7 + len; |
2731 | Local[i++] = spnt1 ? spnt1->VMS_type : DBG_S_C_ADVANCED_TYPE; | |
be9618de | 2732 | Local[i++] = DBG_S_C_STRUCT_ITEM; |
a9918088 | 2733 | COPY_LONG (&Local[i], i2); /* bit offset */ |
494a6c05 | 2734 | i += 4; |
be9618de KR |
2735 | Local[i++] = strlen (pnt2); |
2736 | while (*pnt2 != '\0') | |
2737 | Local[i++] = *pnt2++; | |
2738 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2739 | i = 0; | |
a9918088 | 2740 | if (!spnt1) |
be9618de KR |
2741 | generate_suffix (spnt1, dtype); |
2742 | else if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2743 | generate_suffix (spnt1, 0); | |
c06e55d9 KR |
2744 | } |
2745 | } | |
be9618de KR |
2746 | pnt1++; |
2747 | Local[i++] = 0x01; /* length byte */ | |
2748 | Local[i++] = DBG_S_C_STRUCT_END; | |
2749 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2750 | i = 0; | |
2751 | break; | |
2752 | case 'e': | |
2753 | spnt->advanced = ENUM; | |
2754 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2755 | spnt->struc_numb = ++structure_count; | |
2756 | spnt->data_size = 4; | |
2757 | VMS_Def_Struct (spnt->struc_numb); | |
be9618de | 2758 | i = 0; |
a9918088 KR |
2759 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) |
2760 | if (fpnt->dbx_type == spnt->dbx_type) | |
2761 | { | |
2762 | fpnt->resolved = 'Y'; | |
2763 | VMS_Set_Struct (fpnt->struc_numb); | |
2764 | VMS_Store_Struct (spnt->struc_numb); | |
2765 | i++; | |
2766 | } | |
2767 | if (i > 0) | |
2768 | VMS_Set_Struct (spnt->struc_numb); | |
2769 | i = 0; | |
2770 | len = strlen (symbol_name); | |
2771 | Local[i++] = 3 + len; | |
be9618de | 2772 | Local[i++] = DBG_S_C_ENUM_START; |
a9918088 KR |
2773 | Local[i++] = 4 * 8; /* enum values are 32 bits */ |
2774 | Local[i++] = len; | |
be9618de KR |
2775 | pnt2 = symbol_name; |
2776 | while (*pnt2 != '\0') | |
2777 | Local[i++] = *pnt2++; | |
2778 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2779 | i = 0; | |
2780 | while (*++pnt != ';') | |
2781 | { | |
2782 | pnt1 = (char *) strchr (pnt, ':'); | |
2783 | *pnt1++ = '\0'; | |
2784 | pnt1 = cvt_integer (pnt1, &i1); | |
a9918088 KR |
2785 | len = strlen (pnt); |
2786 | Local[i++] = 7 + len; | |
be9618de | 2787 | Local[i++] = DBG_S_C_ENUM_ITEM; |
a9918088 | 2788 | Local[i++] = DST_K_VALKIND_LITERAL; |
494a6c05 KR |
2789 | COPY_LONG (&Local[i], i1); |
2790 | i += 4; | |
a9918088 | 2791 | Local[i++] = len; |
be9618de KR |
2792 | pnt2 = pnt; |
2793 | while (*pnt != '\0') | |
2794 | Local[i++] = *pnt++; | |
2795 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2796 | i = 0; | |
2797 | pnt = pnt1; /* Skip final semicolon */ | |
c06e55d9 | 2798 | } |
be9618de KR |
2799 | Local[i++] = 0x01; /* len byte */ |
2800 | Local[i++] = DBG_S_C_ENUM_END; | |
2801 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2802 | i = 0; | |
2803 | pnt1 = pnt + 1; | |
2804 | break; | |
2805 | case 'a': | |
2806 | spnt->advanced = ARRAY; | |
2807 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2808 | pnt = (char *) strchr (pnt, ';'); | |
2809 | if (pnt == (char *) NULL) | |
2810 | return 1; | |
2811 | pnt1 = cvt_integer (pnt + 1, &spnt->index_min); | |
2812 | pnt1 = cvt_integer (pnt1 + 1, &spnt->index_max); | |
2813 | pnt1 = cvt_integer (pnt1 + 1, &spnt->type2); | |
494a6c05 KR |
2814 | pnt=(char*)strchr(str+1,'='); |
2815 | if((pnt != (char*) NULL)) | |
2816 | if(VMS_typedef_parse(pnt) == 1 ) return 1; | |
be9618de KR |
2817 | break; |
2818 | case 'f': | |
2819 | spnt->advanced = FUNCTION; | |
2820 | spnt->VMS_type = DBG_S_C_FUNCTION_ADDR; | |
2821 | /* this masquerades as a basic type*/ | |
2822 | spnt->data_size = 4; | |
2823 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2824 | break; | |
2825 | case '*': | |
2826 | spnt->advanced = POINTER; | |
2827 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2828 | spnt->data_size = 4; | |
2829 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2830 | pnt = (char *) strchr (str + 1, '='); | |
2831 | if ((pnt != (char *) NULL)) | |
2832 | if (VMS_typedef_parse (pnt) == 1) | |
2833 | return 1; | |
2834 | break; | |
2835 | default: | |
2836 | spnt->advanced = UNKNOWN; | |
2837 | spnt->VMS_type = 0; | |
2838 | printf ("gcc-as warning(debugger output):"); | |
2839 | printf (" %d is an unknown type of variable.\n", spnt->dbx_type); | |
2840 | return 1; /* unable to decipher */ | |
c06e55d9 | 2841 | } |
be9618de KR |
2842 | /* this removes the evidence of the definition so that the outer levels of |
2843 | parsing do not have to worry about it */ | |
2844 | pnt = str; | |
2845 | while (*pnt1 != '\0') | |
2846 | *pnt++ = *pnt1++; | |
2847 | *pnt = '\0'; | |
2848 | return 0; | |
2849 | } | |
2850 | ||
2851 | ||
2852 | /* | |
2853 | * This is the root routine that parses the stabs entries for definitions. | |
2854 | * it calls VMS_typedef_parse, which can in turn call itself. | |
2855 | * We need to be careful, since sometimes there are forward references to | |
2856 | * other symbol types, and these cannot be resolved until we have completed | |
2857 | * the parse. | |
494a6c05 KR |
2858 | * |
2859 | * Also check and see if we are using continuation stabs, if we are, then | |
2860 | * paste together the entire contents of the stab before we pass it to | |
2861 | * VMS_typedef_parse. | |
be9618de KR |
2862 | */ |
2863 | static int | |
2864 | VMS_LSYM_Parse () | |
2865 | { | |
2866 | char *pnt; | |
2867 | char *pnt1; | |
2868 | char *pnt2; | |
2869 | char *str; | |
494a6c05 | 2870 | char *parse_buffer = 0; |
be9618de KR |
2871 | char fixit[10]; |
2872 | int incomplete, i, pass, incom1; | |
2873 | struct VMS_DBG_Symbol *spnt; | |
2874 | struct VMS_Symbol *vsp; | |
2875 | struct forward_ref *fpnt; | |
2876 | symbolS *sp; | |
2877 | pass = 0; | |
494a6c05 | 2878 | final_pass = 0; |
be9618de KR |
2879 | incomplete = 0; |
2880 | do | |
2881 | { | |
2882 | incom1 = incomplete; | |
2883 | incomplete = 0; | |
2884 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
2885 | { | |
2886 | /* | |
2887 | * Deal with STAB symbols | |
2888 | */ | |
2889 | if (S_IS_DEBUG (sp)) | |
2890 | { | |
2891 | /* | |
2892 | * Dispatch on STAB type | |
2893 | */ | |
2894 | switch (S_GET_RAW_TYPE (sp)) | |
2895 | { | |
2896 | case N_GSYM: | |
2897 | case N_LCSYM: | |
2898 | case N_STSYM: | |
2899 | case N_PSYM: | |
2900 | case N_RSYM: | |
2901 | case N_LSYM: | |
2902 | case N_FUN: /*sometimes these contain typedefs*/ | |
2903 | str = S_GET_NAME (sp); | |
2904 | symbol_name = str; | |
494a6c05 KR |
2905 | pnt = str + strlen(str) -1; |
2906 | if (*pnt == '?') /* Continuation stab. */ | |
2907 | { | |
2908 | symbolS *spnext; | |
2909 | int tlen = 0; | |
2910 | spnext = sp; | |
2911 | do { | |
2912 | tlen += strlen(str) - 1; | |
2913 | spnext = symbol_next (spnext); | |
2914 | str = S_GET_NAME (spnext); | |
2915 | pnt = str + strlen(str) - 1; | |
2916 | } while (*pnt == '?'); | |
2917 | tlen += strlen(str); | |
c06e55d9 | 2918 | parse_buffer = (char *) xmalloc (tlen + 1); |
494a6c05 KR |
2919 | strcpy(parse_buffer, S_GET_NAME (sp)); |
2920 | pnt2 = parse_buffer + strlen(S_GET_NAME (sp)) - 1; | |
2921 | *pnt2 = '\0'; | |
2922 | spnext = sp; | |
2923 | do { | |
2924 | spnext = symbol_next (spnext); | |
2925 | str = S_GET_NAME (spnext); | |
2926 | strcat (pnt2, S_GET_NAME (spnext)); | |
2927 | pnt2 += strlen(str) - 1; | |
2928 | *str = '\0'; /* Erase this string */ | |
2929 | if (*pnt2 != '?') break; | |
2930 | *pnt2 = '\0'; | |
2931 | } while (1 == 1); | |
2932 | str = parse_buffer; | |
2933 | symbol_name = str; | |
c06e55d9 | 2934 | } |
be9618de | 2935 | pnt = (char *) strchr (str, ':'); |
494a6c05 | 2936 | if (pnt != (char *) NULL) |
be9618de | 2937 | { |
494a6c05 KR |
2938 | *pnt = '\0'; |
2939 | pnt1 = pnt + 1; | |
2940 | pnt2 = (char *) strchr (pnt1, '='); | |
2941 | if (pnt2 != (char *) NULL) | |
2942 | incomplete += VMS_typedef_parse (pnt2); | |
2943 | if (parse_buffer){ | |
2944 | /* At this point the parse buffer should just contain name:nn. | |
2945 | If it does not, then we are in real trouble. Anyway, | |
2946 | this is always shorter than the original line. */ | |
2947 | strcpy(S_GET_NAME (sp), parse_buffer); | |
2948 | free (parse_buffer); | |
2949 | parse_buffer = 0; | |
c06e55d9 | 2950 | } |
494a6c05 | 2951 | *pnt = ':'; /* put back colon so variable def code finds dbx_type*/ |
c06e55d9 | 2952 | } |
be9618de KR |
2953 | break; |
2954 | } /*switch*/ | |
2955 | } /* if */ | |
2956 | } /*for*/ | |
2957 | pass++; | |
494a6c05 KR |
2958 | /* Make one last pass, if needed, and define whatever we can that is left */ |
2959 | if(final_pass == 0 && incomplete == incom1) | |
2960 | { | |
2961 | final_pass = 1; | |
2962 | incom1 ++; /* Force one last pass through */ | |
c06e55d9 | 2963 | } |
be9618de KR |
2964 | } while ((incomplete != 0) && (incomplete != incom1)); |
2965 | /* repeat until all refs resolved if possible */ | |
2966 | /* if (pass > 1) printf(" Required %d passes\n",pass);*/ | |
2967 | if (incomplete != 0) | |
2968 | { | |
2969 | printf ("gcc-as warning(debugger output):"); | |
2970 | printf ("Unable to resolve %d circular references.\n", incomplete); | |
c06e55d9 | 2971 | } |
be9618de KR |
2972 | fpnt = f_ref_root; |
2973 | symbol_name = "\0"; | |
2974 | while (fpnt != (struct forward_ref *) NULL) | |
2975 | { | |
2976 | if (fpnt->resolved != 'Y') | |
2977 | { | |
2978 | if (find_symbol (fpnt->dbx_type) != | |
2979 | (struct VMS_DBG_Symbol *) NULL) | |
2980 | { | |
2981 | printf ("gcc-as warning(debugger output):"); | |
2982 | printf ("Forward reference error, dbx type %d\n", | |
2983 | fpnt->dbx_type); | |
2984 | break; | |
c06e55d9 | 2985 | } |
be9618de KR |
2986 | fixit[0] = 0; |
2987 | sprintf (&fixit[1], "%d=s4;", fpnt->dbx_type); | |
2988 | pnt2 = (char *) strchr (&fixit[1], '='); | |
2989 | VMS_typedef_parse (pnt2); | |
c06e55d9 | 2990 | } |
be9618de | 2991 | fpnt = fpnt->next; |
c06e55d9 | 2992 | } |
be9618de KR |
2993 | } |
2994 | ||
2995 | static | |
2996 | Define_Local_Symbols (s1, s2) | |
2997 | symbolS *s1, *s2; | |
2998 | { | |
2999 | symbolS *symbolP1; | |
3000 | for (symbolP1 = symbol_next (s1); symbolP1 != s2; symbolP1 = symbol_next (symbolP1)) | |
3001 | { | |
3002 | if (symbolP1 == (symbolS *) NULL) | |
3003 | return; | |
3004 | if (S_GET_RAW_TYPE (symbolP1) == N_FUN) | |
3005 | { | |
3006 | char * pnt=(char*) strchr (S_GET_NAME (symbolP1), ':') + 1; | |
3007 | if (*pnt == 'F' || *pnt == 'f') break; | |
c06e55d9 | 3008 | } |
be9618de KR |
3009 | /* |
3010 | * Deal with STAB symbols | |
3011 | */ | |
3012 | if (S_IS_DEBUG (symbolP1)) | |
3013 | { | |
3014 | /* | |
3015 | * Dispatch on STAB type | |
3016 | */ | |
3017 | switch (S_GET_RAW_TYPE (symbolP1)) | |
3018 | { | |
3019 | case N_LSYM: | |
3020 | case N_PSYM: | |
3021 | VMS_local_stab_Parse (symbolP1); | |
3022 | break; | |
3023 | case N_RSYM: | |
3024 | VMS_RSYM_Parse (symbolP1, Current_Routine, Text_Psect); | |
3025 | break; | |
3026 | } /*switch*/ | |
3027 | } /* if */ | |
3028 | } /* for */ | |
3029 | } | |
3030 | ||
3031 | \f | |
3032 | /* This function crawls the symbol chain searching for local symbols that need | |
3033 | * to be described to the debugger. When we enter a new scope with a "{", it | |
3034 | * creates a new "block", which helps the debugger keep track of which scope | |
3035 | * we are currently in. | |
3036 | */ | |
3037 | ||
3038 | static symbolS * | |
3039 | Define_Routine (symbolP, Level) | |
3040 | symbolS *symbolP; | |
3041 | int Level; | |
3042 | { | |
3043 | symbolS *sstart; | |
3044 | symbolS *symbolP1; | |
3045 | char str[10]; | |
3046 | int rcount = 0; | |
3047 | int Offset; | |
3048 | sstart = symbolP; | |
3049 | for (symbolP1 = symbol_next (symbolP); symbolP1; symbolP1 = symbol_next (symbolP1)) | |
3050 | { | |
3051 | if (S_GET_RAW_TYPE (symbolP1) == N_FUN) | |
3052 | { | |
3053 | char * pnt=(char*) strchr (S_GET_NAME (symbolP1), ':') + 1; | |
3054 | if (*pnt == 'F' || *pnt == 'f') break; | |
c06e55d9 | 3055 | } |
be9618de KR |
3056 | /* |
3057 | * Deal with STAB symbols | |
3058 | */ | |
3059 | if (S_IS_DEBUG (symbolP1)) | |
3060 | { | |
3061 | /* | |
3062 | * Dispatch on STAB type | |
3063 | */ | |
3064 | switch (S_GET_RAW_TYPE (symbolP1)) | |
3065 | { | |
3066 | case N_LBRAC: | |
3067 | if (Level != 0) | |
3068 | { | |
3069 | sprintf (str, "$%d", rcount++); | |
3070 | VMS_TBT_Block_Begin (symbolP1, Text_Psect, str); | |
c06e55d9 | 3071 | } |
be9618de KR |
3072 | Offset = S_GET_VALUE (symbolP1); |
3073 | Define_Local_Symbols (sstart, symbolP1); | |
3074 | symbolP1 = | |
3075 | Define_Routine (symbolP1, Level + 1); | |
3076 | if (Level != 0) | |
3077 | VMS_TBT_Block_End (S_GET_VALUE (symbolP1) - | |
3078 | Offset); | |
3079 | sstart = symbolP1; | |
3080 | break; | |
3081 | case N_RBRAC: | |
3082 | return symbolP1; | |
3083 | } /*switch*/ | |
3084 | } /* if */ | |
3085 | } /* for */ | |
3086 | /* we end up here if there were no brackets in this function. Define | |
3087 | everything */ | |
3088 | Define_Local_Symbols (sstart, (symbolS *) 0); | |
3089 | return symbolP1; | |
3090 | } | |
3091 | \f | |
3092 | ||
3093 | static | |
3094 | VMS_DBG_Define_Routine (symbolP, Curr_Routine, Txt_Psect) | |
3095 | symbolS *symbolP; | |
3096 | symbolS *Curr_Routine; | |
3097 | int Txt_Psect; | |
3098 | { | |
3099 | Current_Routine = Curr_Routine; | |
3100 | Text_Psect = Txt_Psect; | |
3101 | Define_Routine (symbolP, 0); | |
3102 | } | |
3103 | \f | |
3104 | ||
3105 | ||
3106 | ||
b9419dd2 | 3107 | #ifndef VMS |
be9618de KR |
3108 | #include <sys/types.h> |
3109 | #include <time.h> | |
3110 | ||
3111 | /* Manufacure a VMS like time on a unix based system. */ | |
db4e0f90 KR |
3112 | get_VMS_time_on_unix (Now) |
3113 | char *Now; | |
be9618de KR |
3114 | { |
3115 | char *pnt; | |
3116 | time_t timeb; | |
3117 | time (&timeb); | |
3118 | pnt = ctime (&timeb); | |
3119 | pnt[3] = 0; | |
3120 | pnt[7] = 0; | |
3121 | pnt[10] = 0; | |
3122 | pnt[16] = 0; | |
3123 | pnt[24] = 0; | |
3124 | sprintf (Now, "%2s-%3s-%s %s", pnt + 8, pnt + 4, pnt + 20, pnt + 11); | |
3125 | } | |
3126 | ||
b9419dd2 | 3127 | #endif /* not VMS */ |
be9618de KR |
3128 | /* |
3129 | * Write the MHD (Module Header) records | |
3130 | */ | |
3131 | static | |
3132 | Write_VMS_MHD_Records () | |
3133 | { | |
3134 | register char *cp, *cp1; | |
3135 | register int i; | |
3136 | struct | |
3137 | { | |
3138 | int Size; | |
3139 | char *Ptr; | |
3140 | } Descriptor; | |
3141 | char Module_Name[256]; | |
3142 | char Now[18]; | |
3143 | ||
3144 | /* | |
3145 | * We are writing a module header record | |
3146 | */ | |
3147 | Set_VMS_Object_File_Record (OBJ_S_C_HDR); | |
3148 | /* | |
3149 | * *************************** | |
3150 | * *MAIN MODULE HEADER RECORD* | |
3151 | * *************************** | |
3152 | * | |
3153 | * Store record type and header type | |
3154 | */ | |
3155 | PUT_CHAR (OBJ_S_C_HDR); | |
3156 | PUT_CHAR (MHD_S_C_MHD); | |
3157 | /* | |
3158 | * Structure level is 0 | |
3159 | */ | |
3160 | PUT_CHAR (OBJ_S_C_STRLVL); | |
3161 | /* | |
3162 | * Maximum record size is size of the object record buffer | |
3163 | */ | |
3164 | PUT_SHORT (sizeof (Object_Record_Buffer)); | |
3165 | /* | |
3166 | * Get module name (the FILENAME part of the object file) | |
3167 | */ | |
3168 | cp = out_file_name; | |
3169 | cp1 = Module_Name; | |
3170 | while (*cp) | |
3171 | { | |
3172 | if ((*cp == ']') || (*cp == '>') || | |
3173 | (*cp == ':') || (*cp == '/')) | |
3174 | { | |
3175 | cp1 = Module_Name; | |
3176 | cp++; | |
3177 | continue; | |
3178 | } | |
3179 | *cp1++ = islower (*cp) ? toupper (*cp++) : *cp++; | |
3180 | } | |
3181 | *cp1 = 0; | |
3182 | /* | |
3183 | * Limit it to 31 characters and store in the object record | |
3184 | */ | |
3185 | while (--cp1 >= Module_Name) | |
3186 | if (*cp1 == '.') | |
3187 | *cp1 = 0; | |
3188 | if (strlen (Module_Name) > 31) | |
3189 | { | |
def66e24 | 3190 | if (flag_hash_long_names) |
be9618de KR |
3191 | printf ("%s: Module name truncated: %s\n", myname, Module_Name); |
3192 | Module_Name[31] = 0; | |
3193 | } | |
3194 | PUT_COUNTED_STRING (Module_Name); | |
3195 | /* | |
3196 | * Module Version is "V1.0" | |
3197 | */ | |
3198 | PUT_COUNTED_STRING ("V1.0"); | |
3199 | /* | |
3200 | * Creation time is "now" (17 chars of time string) | |
3201 | */ | |
b9419dd2 | 3202 | #ifndef VMS |
be9618de | 3203 | get_VMS_time_on_unix (&Now[0]); |
b9419dd2 | 3204 | #else /* VMS */ |
be9618de KR |
3205 | Descriptor.Size = 17; |
3206 | Descriptor.Ptr = Now; | |
3207 | sys$asctim (0, &Descriptor, 0, 0); | |
b9419dd2 | 3208 | #endif /* VMS */ |
be9618de KR |
3209 | for (i = 0; i < 17; i++) |
3210 | PUT_CHAR (Now[i]); | |
3211 | /* | |
3212 | * Patch time is "never" (17 zeros) | |
3213 | */ | |
3214 | for (i = 0; i < 17; i++) | |
3215 | PUT_CHAR (0); | |
3216 | /* | |
3217 | * Flush the record | |
3218 | */ | |
3219 | Flush_VMS_Object_Record_Buffer (); | |
3220 | /* | |
3221 | * ************************* | |
3222 | * *LANGUAGE PROCESSOR NAME* | |
3223 | * ************************* | |
3224 | * | |
3225 | * Store record type and header type | |
3226 | */ | |
3227 | PUT_CHAR (OBJ_S_C_HDR); | |
3228 | PUT_CHAR (MHD_S_C_LNM); | |
3229 | /* | |
3230 | * Store language processor name and version | |
3231 | * (not a counted string!) | |
c06e55d9 KR |
3232 | * |
3233 | * This is normally supplied by the gcc driver for the command line | |
3234 | * which invokes gas. If absent, we fall back to gas's version. | |
be9618de KR |
3235 | */ |
3236 | cp = compiler_version_string; | |
3237 | if (cp == 0) | |
3238 | { | |
3239 | cp = "GNU AS V"; | |
3240 | while (*cp) | |
3241 | PUT_CHAR (*cp++); | |
c06e55d9 KR |
3242 | cp = GAS_VERSION; |
3243 | } | |
3244 | while (*cp >= ' ') | |
be9618de KR |
3245 | PUT_CHAR (*cp++); |
3246 | /* | |
3247 | * Flush the record | |
3248 | */ | |
3249 | Flush_VMS_Object_Record_Buffer (); | |
3250 | } | |
3251 | \f | |
3252 | ||
3253 | /* | |
3254 | * Write the EOM (End Of Module) record | |
3255 | */ | |
3256 | static | |
3257 | Write_VMS_EOM_Record (Psect, Offset) | |
3258 | int Psect; | |
3259 | int Offset; | |
3260 | { | |
3261 | /* | |
3262 | * We are writing an end-of-module record | |
3263 | */ | |
3264 | Set_VMS_Object_File_Record (OBJ_S_C_EOM); | |
3265 | /* | |
3266 | * Store record Type | |
3267 | */ | |
3268 | PUT_CHAR (OBJ_S_C_EOM); | |
3269 | /* | |
3270 | * Store the error severity (0) | |
3271 | */ | |
3272 | PUT_CHAR (0); | |
3273 | /* | |
3274 | * Store the entry point, if it exists | |
3275 | */ | |
3276 | if (Psect >= 0) | |
3277 | { | |
3278 | /* | |
3279 | * Store the entry point Psect | |
3280 | */ | |
3281 | PUT_CHAR (Psect); | |
3282 | /* | |
3283 | * Store the entry point Psect offset | |
3284 | */ | |
3285 | PUT_LONG (Offset); | |
3286 | } | |
3287 | /* | |
3288 | * Flush the record | |
3289 | */ | |
3290 | Flush_VMS_Object_Record_Buffer (); | |
3291 | } | |
3292 | \f | |
3293 | ||
3294 | /* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ | |
3295 | ||
3296 | static int | |
3297 | hash_string (ptr) | |
3298 | unsigned char *ptr; | |
3299 | { | |
3300 | register unsigned char *p = ptr; | |
3301 | register unsigned char *end = p + strlen (ptr); | |
3302 | register unsigned char c; | |
3303 | register int hash = 0; | |
3304 | ||
3305 | while (p != end) | |
3306 | { | |
3307 | c = *p++; | |
3308 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); | |
3309 | } | |
3310 | return hash; | |
3311 | } | |
3312 | ||
3313 | /* | |
3314 | * Generate a Case-Hacked VMS symbol name (limited to 31 chars) | |
3315 | */ | |
3316 | static | |
3317 | VMS_Case_Hack_Symbol (In, Out) | |
3318 | register char *In; | |
3319 | register char *Out; | |
3320 | { | |
3321 | long int init = 0; | |
3322 | long int result; | |
3323 | char *pnt; | |
3324 | char *new_name; | |
3325 | char *old_name; | |
3326 | register int i; | |
3327 | int destructor = 0; /*hack to allow for case sens in a destructor*/ | |
3328 | int truncate = 0; | |
3329 | int Case_Hack_Bits = 0; | |
3330 | int Saw_Dollar = 0; | |
3331 | static char Hex_Table[16] = | |
3332 | {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; | |
3333 | ||
3334 | /* | |
3335 | * Kill any leading "_" | |
3336 | */ | |
3337 | if ((In[0] == '_') && ((In[1] > '9') || (In[1] < '0'))) | |
3338 | In++; | |
3339 | ||
3340 | new_name = Out; /* save this for later*/ | |
3341 | ||
3342 | #if barfoo /* Dead code */ | |
3343 | if ((In[0] == '_') && (In[1] == '$') && (In[2] == '_')) | |
3344 | destructor = 1; | |
3345 | #endif | |
3346 | ||
3347 | /* We may need to truncate the symbol, save the hash for later*/ | |
3348 | if (strlen (In) > 23) | |
3349 | result = hash_string (In); | |
3350 | /* | |
3351 | * Is there a Psect Attribute to skip?? | |
3352 | */ | |
3353 | if (HAS_PSECT_ATTRIBUTES (In)) | |
3354 | { | |
3355 | /* | |
3356 | * Yes: Skip it | |
3357 | */ | |
3358 | In += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3359 | while (*In) | |
3360 | { | |
3361 | if ((In[0] == '$') && (In[1] == '$')) | |
3362 | { | |
3363 | In += 2; | |
3364 | break; | |
3365 | } | |
3366 | In++; | |
3367 | } | |
3368 | } | |
3369 | ||
3370 | old_name = In; | |
def66e24 | 3371 | /* if (strlen(In) > 31 && flag_hash_long_names) |
be9618de KR |
3372 | printf("%s: Symbol name truncated: %s\n",myname,In);*/ |
3373 | /* | |
3374 | * Do the case conversion | |
3375 | */ | |
3376 | i = 23; /* Maximum of 23 chars */ | |
3377 | while (*In && (--i >= 0)) | |
3378 | { | |
3379 | Case_Hack_Bits <<= 1; | |
3380 | if (*In == '$') | |
3381 | Saw_Dollar = 1; | |
3382 | if ((destructor == 1) && (i == 21)) | |
3383 | Saw_Dollar = 0; | |
3384 | switch (vms_name_mapping) | |
3385 | { | |
3386 | case 0: | |
3387 | if (isupper(*In)) { | |
3388 | *Out++ = *In++; | |
3389 | Case_Hack_Bits |= 1; | |
3390 | } else { | |
3391 | *Out++ = islower(*In) ? toupper(*In++) : *In++; | |
3392 | } | |
3393 | break; | |
3394 | case 3: *Out++ = *In++; | |
3395 | break; | |
3396 | case 2: | |
3397 | if (islower(*In)) { | |
3398 | *Out++ = *In++; | |
3399 | } else { | |
3400 | *Out++ = isupper(*In) ? tolower(*In++) : *In++; | |
3401 | } | |
3402 | break; | |
c06e55d9 | 3403 | } |
be9618de KR |
3404 | } |
3405 | /* | |
3406 | * If we saw a dollar sign, we don't do case hacking | |
3407 | */ | |
def66e24 | 3408 | if (flag_no_hash_mixed_case || Saw_Dollar) |
be9618de KR |
3409 | Case_Hack_Bits = 0; |
3410 | ||
3411 | /* | |
3412 | * If we have more than 23 characters and everything is lowercase | |
3413 | * we can insert the full 31 characters | |
3414 | */ | |
3415 | if (*In) | |
3416 | { | |
3417 | /* | |
3418 | * We have more than 23 characters | |
3419 | * If we must add the case hack, then we have truncated the str | |
3420 | */ | |
3421 | pnt = Out; | |
3422 | truncate = 1; | |
3423 | if (Case_Hack_Bits == 0) | |
3424 | { | |
3425 | /* | |
3426 | * And so far they are all lower case: | |
3427 | * Check up to 8 more characters | |
3428 | * and ensure that they are lowercase | |
3429 | */ | |
3430 | for (i = 0; (In[i] != 0) && (i < 8); i++) | |
def66e24 | 3431 | if (isupper(In[i]) && !Saw_Dollar && !flag_no_hash_mixed_case) |
be9618de KR |
3432 | break; |
3433 | ||
3434 | if (In[i] == 0) | |
3435 | truncate = 0; | |
3436 | ||
3437 | if ((i == 8) || (In[i] == 0)) | |
3438 | { | |
3439 | /* | |
3440 | * They are: Copy up to 31 characters | |
3441 | * to the output string | |
3442 | */ | |
3443 | i = 8; | |
3444 | while ((--i >= 0) && (*In)) | |
3445 | switch (vms_name_mapping){ | |
3446 | case 0: *Out++ = islower(*In) ? | |
3447 | toupper (*In++) : | |
3448 | *In++; | |
3449 | break; | |
3450 | case 3: *Out++ = *In++; | |
3451 | break; | |
3452 | case 2: *Out++ = isupper(*In) ? | |
3453 | tolower(*In++) : | |
3454 | *In++; | |
3455 | break; | |
c06e55d9 | 3456 | } |
be9618de KR |
3457 | } |
3458 | } | |
3459 | } | |
3460 | /* | |
3461 | * If there were any uppercase characters in the name we | |
3462 | * take on the case hacking string | |
3463 | */ | |
3464 | ||
3465 | /* Old behavior for regular GNU-C compiler */ | |
def66e24 | 3466 | if (!flag_hash_long_names) |
be9618de KR |
3467 | truncate = 0; |
3468 | if ((Case_Hack_Bits != 0) || (truncate == 1)) | |
3469 | { | |
3470 | if (truncate == 0) | |
3471 | { | |
3472 | *Out++ = '_'; | |
3473 | for (i = 0; i < 6; i++) | |
3474 | { | |
3475 | *Out++ = Hex_Table[Case_Hack_Bits & 0xf]; | |
3476 | Case_Hack_Bits >>= 4; | |
3477 | } | |
3478 | *Out++ = 'X'; | |
3479 | } | |
3480 | else | |
3481 | { | |
3482 | Out = pnt; /*Cut back to 23 characters maximum */ | |
3483 | *Out++ = '_'; | |
3484 | for (i = 0; i < 7; i++) | |
3485 | { | |
3486 | init = result & 0x01f; | |
3487 | if (init < 10) | |
3488 | *Out++ = '0' + init; | |
3489 | else | |
3490 | *Out++ = 'A' + init - 10; | |
3491 | result = result >> 5; | |
3492 | } | |
3493 | } | |
3494 | } /*Case Hack */ | |
3495 | /* | |
3496 | * Done | |
3497 | */ | |
3498 | *Out = 0; | |
def66e24 | 3499 | if (truncate == 1 && flag_hash_long_names && flag_show_after_trunc) |
be9618de KR |
3500 | printf ("%s: Symbol %s replaced by %s\n", myname, old_name, new_name); |
3501 | } | |
3502 | \f | |
3503 | ||
3504 | /* | |
3505 | * Scan a symbol name for a psect attribute specification | |
3506 | */ | |
3507 | #define GLOBALSYMBOL_BIT 0x10000 | |
3508 | #define GLOBALVALUE_BIT 0x20000 | |
3509 | ||
3510 | ||
3511 | static | |
3512 | VMS_Modify_Psect_Attributes (Name, Attribute_Pointer) | |
3513 | char *Name; | |
3514 | int *Attribute_Pointer; | |
3515 | { | |
3516 | register int i; | |
3517 | register char *cp; | |
3518 | int Negate; | |
3519 | static struct | |
3520 | { | |
3521 | char *Name; | |
3522 | int Value; | |
3523 | } Attributes[] = | |
3524 | { | |
3525 | {"PIC", GPS_S_M_PIC}, | |
3526 | {"LIB", GPS_S_M_LIB}, | |
3527 | {"OVR", GPS_S_M_OVR}, | |
3528 | {"REL", GPS_S_M_REL}, | |
3529 | {"GBL", GPS_S_M_GBL}, | |
3530 | {"SHR", GPS_S_M_SHR}, | |
3531 | {"EXE", GPS_S_M_EXE}, | |
3532 | {"RD", GPS_S_M_RD}, | |
3533 | {"WRT", GPS_S_M_WRT}, | |
3534 | {"VEC", GPS_S_M_VEC}, | |
3535 | {"GLOBALSYMBOL", GLOBALSYMBOL_BIT}, | |
3536 | {"GLOBALVALUE", GLOBALVALUE_BIT}, | |
3537 | {0, 0} | |
3538 | }; | |
3539 | ||
3540 | /* | |
3541 | * Kill leading "_" | |
3542 | */ | |
3543 | if (*Name == '_') | |
3544 | Name++; | |
3545 | /* | |
3546 | * Check for a PSECT attribute list | |
3547 | */ | |
3548 | if (!HAS_PSECT_ATTRIBUTES (Name)) | |
3549 | return; /* If not, return */ | |
3550 | /* | |
3551 | * Skip the attribute list indicator | |
3552 | */ | |
3553 | Name += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3554 | /* | |
3555 | * Process the attributes ("_" separated, "$" terminated) | |
3556 | */ | |
3557 | while (*Name != '$') | |
3558 | { | |
3559 | /* | |
3560 | * Assume not negating | |
3561 | */ | |
3562 | Negate = 0; | |
3563 | /* | |
3564 | * Check for "NO" | |
3565 | */ | |
3566 | if ((Name[0] == 'N') && (Name[1] == 'O')) | |
3567 | { | |
3568 | /* | |
3569 | * We are negating (and skip the NO) | |
3570 | */ | |
3571 | Negate = 1; | |
3572 | Name += 2; | |
3573 | } | |
3574 | /* | |
3575 | * Find the token delimiter | |
3576 | */ | |
3577 | cp = Name; | |
3578 | while (*cp && (*cp != '_') && (*cp != '$')) | |
3579 | cp++; | |
3580 | /* | |
3581 | * Look for the token in the attribute list | |
3582 | */ | |
3583 | for (i = 0; Attributes[i].Name; i++) | |
3584 | { | |
3585 | /* | |
3586 | * If the strings match, set/clear the attr. | |
3587 | */ | |
3588 | if (strncmp (Name, Attributes[i].Name, cp - Name) == 0) | |
3589 | { | |
3590 | /* | |
3591 | * Set or clear | |
3592 | */ | |
3593 | if (Negate) | |
3594 | *Attribute_Pointer &= | |
3595 | ~Attributes[i].Value; | |
3596 | else | |
3597 | *Attribute_Pointer |= | |
3598 | Attributes[i].Value; | |
3599 | /* | |
3600 | * Done | |
3601 | */ | |
3602 | break; | |
3603 | } | |
3604 | } | |
3605 | /* | |
3606 | * Now skip the attribute | |
3607 | */ | |
3608 | Name = cp; | |
3609 | if (*Name == '_') | |
3610 | Name++; | |
3611 | } | |
be9618de KR |
3612 | } |
3613 | \f | |
3614 | ||
3615 | /* | |
3616 | * Define a global symbol | |
3617 | */ | |
3618 | static | |
3619 | VMS_Global_Symbol_Spec (Name, Psect_Number, Psect_Offset, Defined) | |
3620 | char *Name; | |
3621 | int Psect_Number; | |
3622 | int Psect_Offset; | |
3623 | { | |
3624 | char Local[32]; | |
3625 | ||
3626 | /* | |
3627 | * We are writing a GSD record | |
3628 | */ | |
3629 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3630 | /* | |
3631 | * If the buffer is empty we must insert the GSD record type | |
3632 | */ | |
3633 | if (Object_Record_Offset == 0) | |
3634 | PUT_CHAR (OBJ_S_C_GSD); | |
3635 | /* | |
3636 | * We are writing a Global symbol definition subrecord | |
3637 | */ | |
3638 | if (Psect_Number <= 255) | |
3639 | { | |
3640 | PUT_CHAR (GSD_S_C_SYM); | |
3641 | } | |
3642 | else | |
3643 | { | |
3644 | PUT_CHAR (GSD_S_C_SYMW); | |
3645 | } | |
3646 | /* | |
3647 | * Data type is undefined | |
3648 | */ | |
3649 | PUT_CHAR (0); | |
3650 | /* | |
3651 | * Switch on Definition/Reference | |
3652 | */ | |
3653 | if ((Defined & 1) != 0) | |
3654 | { | |
3655 | /* | |
3656 | * Definition: | |
3657 | * Flags = "RELOCATABLE" and "DEFINED" for regular symbol | |
3658 | * = "DEFINED" for globalvalue (Defined & 2 == 1) | |
3659 | */ | |
3660 | if ((Defined & 2) == 0) | |
3661 | { | |
3662 | PUT_SHORT (GSY_S_M_DEF | GSY_S_M_REL); | |
3663 | } | |
3664 | else | |
3665 | { | |
3666 | PUT_SHORT (GSY_S_M_DEF); | |
c06e55d9 | 3667 | } |
be9618de KR |
3668 | /* |
3669 | * Psect Number | |
3670 | */ | |
3671 | if (Psect_Number <= 255) | |
3672 | { | |
3673 | PUT_CHAR (Psect_Number); | |
3674 | } | |
3675 | else | |
3676 | { | |
3677 | PUT_SHORT (Psect_Number); | |
3678 | } | |
3679 | /* | |
3680 | * Offset | |
3681 | */ | |
3682 | PUT_LONG (Psect_Offset); | |
3683 | } | |
3684 | else | |
3685 | { | |
3686 | /* | |
3687 | * Reference: | |
3688 | * Flags = "RELOCATABLE" for regular symbol, | |
3689 | * = "" for globalvalue (Defined & 2 == 1) | |
3690 | */ | |
3691 | if ((Defined & 2) == 0) | |
3692 | { | |
3693 | PUT_SHORT (GSY_S_M_REL); | |
3694 | } | |
3695 | else | |
3696 | { | |
3697 | PUT_SHORT (0); | |
c06e55d9 | 3698 | } |
be9618de KR |
3699 | } |
3700 | /* | |
3701 | * Finally, the global symbol name | |
3702 | */ | |
3703 | VMS_Case_Hack_Symbol (Name, Local); | |
3704 | PUT_COUNTED_STRING (Local); | |
3705 | /* | |
3706 | * Flush the buffer if it is more than 75% full | |
3707 | */ | |
3708 | if (Object_Record_Offset > | |
3709 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3710 | Flush_VMS_Object_Record_Buffer (); | |
3711 | } | |
3712 | \f | |
3713 | ||
3714 | /* | |
3715 | * Define a psect | |
3716 | */ | |
3717 | static int | |
3718 | VMS_Psect_Spec (Name, Size, Type, vsp) | |
3719 | char *Name; | |
3720 | int Size; | |
3721 | char *Type; | |
3722 | struct VMS_Symbol *vsp; | |
3723 | { | |
3724 | char Local[32]; | |
3725 | int Psect_Attributes; | |
3726 | ||
3727 | /* | |
3728 | * Generate the appropriate PSECT flags given the PSECT type | |
3729 | */ | |
3730 | if (strcmp (Type, "COMMON") == 0) | |
3731 | { | |
3732 | /* | |
3733 | * Common block psects are: PIC,OVR,REL,GBL,SHR,RD,WRT | |
3734 | */ | |
3735 | Psect_Attributes = (GPS_S_M_PIC | GPS_S_M_OVR | GPS_S_M_REL | GPS_S_M_GBL | | |
3736 | GPS_S_M_SHR | GPS_S_M_RD | GPS_S_M_WRT); | |
3737 | } | |
3738 | else if (strcmp (Type, "CONST") == 0) | |
3739 | { | |
3740 | /* | |
3741 | * Common block psects are: PIC,OVR,REL,GBL,SHR,RD | |
3742 | */ | |
3743 | Psect_Attributes = (GPS_S_M_PIC | GPS_S_M_OVR | GPS_S_M_REL | GPS_S_M_GBL | | |
3744 | GPS_S_M_SHR | GPS_S_M_RD); | |
3745 | } | |
3746 | else if (strcmp (Type, "DATA") == 0) | |
3747 | { | |
3748 | /* | |
3749 | * The Data psects are PIC,REL,RD,WRT | |
3750 | */ | |
3751 | Psect_Attributes = | |
3752 | (GPS_S_M_PIC | GPS_S_M_REL | GPS_S_M_RD | GPS_S_M_WRT); | |
3753 | } | |
3754 | else if (strcmp (Type, "TEXT") == 0) | |
3755 | { | |
3756 | /* | |
3757 | * The Text psects are PIC,REL,SHR,EXE,RD | |
3758 | */ | |
3759 | Psect_Attributes = | |
3760 | (GPS_S_M_PIC | GPS_S_M_REL | GPS_S_M_SHR | | |
3761 | GPS_S_M_EXE | GPS_S_M_RD); | |
3762 | } | |
3763 | else | |
3764 | { | |
3765 | /* | |
3766 | * Error: Unknown psect type | |
3767 | */ | |
3768 | error ("Unknown VMS psect type"); | |
3769 | } | |
3770 | /* | |
3771 | * Modify the psect attributes according to any attribute string | |
3772 | */ | |
3773 | if (HAS_PSECT_ATTRIBUTES (Name)) | |
3774 | VMS_Modify_Psect_Attributes (Name, &Psect_Attributes); | |
3775 | /* | |
3776 | * Check for globalref/def/val. | |
3777 | */ | |
3778 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) | |
3779 | { | |
3780 | /* | |
3781 | * globalvalue symbols were generated before. This code | |
3782 | * prevents unsightly psect buildup, and makes sure that | |
3783 | * fixup references are emitted correctly. | |
3784 | */ | |
3785 | vsp->Psect_Index = -1; /* to catch errors */ | |
3786 | S_GET_RAW_TYPE (vsp->Symbol) = N_UNDF; /* make refs work */ | |
3787 | return 1; /* decrement psect counter */ | |
c06e55d9 | 3788 | } |
be9618de KR |
3789 | |
3790 | if ((Psect_Attributes & GLOBALSYMBOL_BIT) != 0) | |
3791 | { | |
3792 | switch (S_GET_RAW_TYPE (vsp->Symbol)) | |
3793 | { | |
3794 | case N_UNDF | N_EXT: | |
3795 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
3796 | vsp->Psect_Offset, 0); | |
3797 | vsp->Psect_Index = -1; | |
3798 | S_GET_RAW_TYPE (vsp->Symbol) = N_UNDF; | |
3799 | return 1; /* return and indicate no psect */ | |
3800 | case N_DATA | N_EXT: | |
3801 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
3802 | vsp->Psect_Offset, 1); | |
3803 | /* In this case we still generate the psect */ | |
3804 | break; | |
3805 | default: | |
3806 | { | |
3807 | char Error_Line[256]; | |
db4e0f90 KR |
3808 | sprintf (Error_Line, |
3809 | "Globalsymbol attribute for symbol %s was unexpected.\n", | |
3810 | Name); | |
be9618de KR |
3811 | error (Error_Line); |
3812 | break; | |
c06e55d9 KR |
3813 | } |
3814 | } /* switch */ | |
3815 | } | |
be9618de KR |
3816 | |
3817 | Psect_Attributes &= 0xffff; /* clear out the globalref/def stuff */ | |
3818 | /* | |
3819 | * We are writing a GSD record | |
3820 | */ | |
3821 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3822 | /* | |
3823 | * If the buffer is empty we must insert the GSD record type | |
3824 | */ | |
3825 | if (Object_Record_Offset == 0) | |
3826 | PUT_CHAR (OBJ_S_C_GSD); | |
3827 | /* | |
3828 | * We are writing a PSECT definition subrecord | |
3829 | */ | |
3830 | PUT_CHAR (GSD_S_C_PSC); | |
3831 | /* | |
3832 | * Psects are always LONGWORD aligned | |
3833 | */ | |
3834 | PUT_CHAR (2); | |
3835 | /* | |
3836 | * Specify the psect attributes | |
3837 | */ | |
3838 | PUT_SHORT (Psect_Attributes); | |
3839 | /* | |
3840 | * Specify the allocation | |
3841 | */ | |
3842 | PUT_LONG (Size); | |
3843 | /* | |
3844 | * Finally, the psect name | |
3845 | */ | |
3846 | VMS_Case_Hack_Symbol (Name, Local); | |
3847 | PUT_COUNTED_STRING (Local); | |
3848 | /* | |
3849 | * Flush the buffer if it is more than 75% full | |
3850 | */ | |
3851 | if (Object_Record_Offset > | |
3852 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3853 | Flush_VMS_Object_Record_Buffer (); | |
3854 | return 0; | |
3855 | } | |
3856 | \f | |
3857 | ||
3858 | /* | |
3859 | * Given the pointer to a symbol we calculate how big the data at the | |
3860 | * symbol is. We do this by looking for the next symbol (local or | |
3861 | * global) which will indicate the start of another datum. | |
3862 | */ | |
3863 | static int | |
3864 | VMS_Initialized_Data_Size (sp, End_Of_Data) | |
3865 | register struct symbol *sp; | |
3866 | int End_Of_Data; | |
3867 | { | |
abf434d8 KR |
3868 | struct symbol *sp1, *Next_Symbol; |
3869 | /* Cache values to avoid extra lookups. */ | |
3870 | valueT sp_val = S_GET_VALUE (sp), sp1_val, next_val; | |
be9618de KR |
3871 | |
3872 | /* | |
3873 | * Find the next symbol | |
3874 | * it delimits this datum | |
3875 | */ | |
3876 | Next_Symbol = 0; | |
3877 | for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) | |
3878 | { | |
3879 | /* | |
3880 | * The data type must match | |
3881 | */ | |
3882 | if (S_GET_TYPE (sp1) != N_DATA) | |
3883 | continue; | |
abf434d8 KR |
3884 | |
3885 | sp1_val = S_GET_VALUE (sp1); | |
3886 | ||
be9618de KR |
3887 | /* |
3888 | * The symbol must be AFTER this symbol | |
3889 | */ | |
abf434d8 | 3890 | if (sp1_val <= sp_val) |
be9618de KR |
3891 | continue; |
3892 | /* | |
3893 | * We ignore THIS symbol | |
3894 | */ | |
3895 | if (sp1 == sp) | |
3896 | continue; | |
3897 | /* | |
3898 | * If there is already a candidate selected for the | |
3899 | * next symbol, see if we are a better candidate | |
3900 | */ | |
3901 | if (Next_Symbol) | |
3902 | { | |
3903 | /* | |
3904 | * We are a better candidate if we are "closer" | |
3905 | * to the symbol | |
3906 | */ | |
abf434d8 | 3907 | if (sp1_val > next_val) |
be9618de | 3908 | continue; |
be9618de | 3909 | } |
abf434d8 KR |
3910 | /* |
3911 | * Make this the candidate | |
3912 | */ | |
3913 | Next_Symbol = sp1; | |
3914 | next_val = sp1_val; | |
be9618de KR |
3915 | } |
3916 | /* | |
3917 | * Calculate its size | |
3918 | */ | |
abf434d8 | 3919 | return Next_Symbol ? (next_val - sp_val) : (End_Of_Data - sp_val); |
be9618de KR |
3920 | } |
3921 | \f | |
3922 | /* | |
3923 | * Check symbol names for the Psect hack with a globalvalue, and then | |
3924 | * generate globalvalues for those that have it. | |
3925 | */ | |
3926 | static | |
3927 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment) | |
3928 | unsigned text_siz; | |
3929 | unsigned data_siz; | |
3930 | char *Data_Segment; | |
3931 | { | |
3932 | register symbolS *sp; | |
3933 | char *stripped_name, *Name; | |
3934 | int Size; | |
3935 | int Psect_Attributes; | |
3936 | int globalvalue; | |
3937 | ||
3938 | /* | |
3939 | * Scan the symbol table for globalvalues, and emit def/ref when | |
3940 | * required. These will be caught again later and converted to | |
3941 | * N_UNDF | |
3942 | */ | |
3943 | for (sp = symbol_rootP; sp; sp = sp->sy_next) | |
3944 | { | |
3945 | /* | |
3946 | * See if this is something we want to look at. | |
3947 | */ | |
3948 | if ((S_GET_RAW_TYPE (sp) != (N_DATA | N_EXT)) && | |
3949 | (S_GET_RAW_TYPE (sp) != (N_UNDF | N_EXT))) | |
3950 | continue; | |
3951 | /* | |
3952 | * See if this has globalvalue specification. | |
3953 | */ | |
3954 | Name = S_GET_NAME (sp); | |
3955 | ||
3956 | if (!HAS_PSECT_ATTRIBUTES (Name)) | |
3957 | continue; | |
3958 | ||
c06e55d9 | 3959 | stripped_name = (char *) xmalloc (strlen (Name) + 1); |
be9618de KR |
3960 | strcpy (stripped_name, Name); |
3961 | Psect_Attributes = 0; | |
3962 | VMS_Modify_Psect_Attributes (stripped_name, &Psect_Attributes); | |
3963 | ||
3964 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) | |
3965 | { | |
3966 | switch (S_GET_RAW_TYPE (sp)) | |
3967 | { | |
3968 | case N_UNDF | N_EXT: | |
3969 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, 2); | |
3970 | break; | |
3971 | case N_DATA | N_EXT: | |
3972 | Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
3973 | if (Size > 4) | |
3974 | error ("Invalid data type for globalvalue"); | |
494a6c05 KR |
3975 | globalvalue = md_chars_to_number (Data_Segment + |
3976 | S_GET_VALUE (sp) - text_siz , Size); | |
be9618de KR |
3977 | /* Three times for good luck. The linker seems to get confused |
3978 | if there are fewer than three */ | |
3979 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, 2); | |
3980 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, 3); | |
3981 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, 3); | |
3982 | break; | |
3983 | default: | |
3984 | printf (" Invalid globalvalue of %s\n", stripped_name); | |
3985 | break; | |
c06e55d9 KR |
3986 | } /* switch */ |
3987 | } /* if */ | |
be9618de | 3988 | free (stripped_name); /* clean up */ |
c06e55d9 | 3989 | } /* for */ |
be9618de KR |
3990 | |
3991 | } | |
3992 | \f | |
3993 | ||
3994 | /* | |
3995 | * Define a procedure entry pt/mask | |
3996 | */ | |
3997 | static | |
3998 | VMS_Procedure_Entry_Pt (Name, Psect_Number, Psect_Offset, Entry_Mask) | |
3999 | char *Name; | |
4000 | int Psect_Number; | |
4001 | int Psect_Offset; | |
4002 | int Entry_Mask; | |
4003 | { | |
4004 | char Local[32]; | |
4005 | ||
4006 | /* | |
4007 | * We are writing a GSD record | |
4008 | */ | |
4009 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
4010 | /* | |
4011 | * If the buffer is empty we must insert the GSD record type | |
4012 | */ | |
4013 | if (Object_Record_Offset == 0) | |
4014 | PUT_CHAR (OBJ_S_C_GSD); | |
4015 | /* | |
4016 | * We are writing a Procedure Entry Pt/Mask subrecord | |
4017 | */ | |
4018 | if (Psect_Number <= 255) | |
4019 | { | |
4020 | PUT_CHAR (GSD_S_C_EPM); | |
4021 | } | |
4022 | else | |
4023 | { | |
4024 | PUT_CHAR (GSD_S_C_EPMW); | |
4025 | } | |
4026 | /* | |
4027 | * Data type is undefined | |
4028 | */ | |
4029 | PUT_CHAR (0); | |
4030 | /* | |
4031 | * Flags = "RELOCATABLE" and "DEFINED" | |
4032 | */ | |
4033 | PUT_SHORT (GSY_S_M_DEF | GSY_S_M_REL); | |
4034 | /* | |
4035 | * Psect Number | |
4036 | */ | |
4037 | if (Psect_Number <= 255) | |
4038 | { | |
4039 | PUT_CHAR (Psect_Number); | |
4040 | } | |
4041 | else | |
4042 | { | |
4043 | PUT_SHORT (Psect_Number); | |
4044 | } | |
4045 | /* | |
4046 | * Offset | |
4047 | */ | |
4048 | PUT_LONG (Psect_Offset); | |
4049 | /* | |
4050 | * Entry mask | |
4051 | */ | |
4052 | PUT_SHORT (Entry_Mask); | |
4053 | /* | |
4054 | * Finally, the global symbol name | |
4055 | */ | |
4056 | VMS_Case_Hack_Symbol (Name, Local); | |
4057 | PUT_COUNTED_STRING (Local); | |
4058 | /* | |
4059 | * Flush the buffer if it is more than 75% full | |
4060 | */ | |
4061 | if (Object_Record_Offset > | |
4062 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4063 | Flush_VMS_Object_Record_Buffer (); | |
4064 | } | |
4065 | \f | |
4066 | ||
4067 | /* | |
4068 | * Set the current location counter to a particular Psect and Offset | |
4069 | */ | |
4070 | static | |
4071 | VMS_Set_Psect (Psect_Index, Offset, Record_Type) | |
4072 | int Psect_Index; | |
4073 | int Offset; | |
4074 | int Record_Type; | |
4075 | { | |
4076 | /* | |
4077 | * We are writing a "Record_Type" record | |
4078 | */ | |
4079 | Set_VMS_Object_File_Record (Record_Type); | |
4080 | /* | |
4081 | * If the buffer is empty we must insert the record type | |
4082 | */ | |
4083 | if (Object_Record_Offset == 0) | |
4084 | PUT_CHAR (Record_Type); | |
4085 | /* | |
4086 | * Stack the Psect base + Longword Offset | |
4087 | */ | |
4088 | if (Psect_Index < 255) | |
4089 | { | |
4090 | PUT_CHAR (TIR_S_C_STA_PL); | |
4091 | PUT_CHAR (Psect_Index); | |
4092 | } | |
4093 | else | |
4094 | { | |
4095 | PUT_CHAR (TIR_S_C_STA_WPL); | |
4096 | PUT_SHORT (Psect_Index); | |
4097 | } | |
4098 | PUT_LONG (Offset); | |
4099 | /* | |
4100 | * Set relocation base | |
4101 | */ | |
4102 | PUT_CHAR (TIR_S_C_CTL_SETRB); | |
4103 | /* | |
4104 | * Flush the buffer if it is more than 75% full | |
4105 | */ | |
4106 | if (Object_Record_Offset > | |
4107 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4108 | Flush_VMS_Object_Record_Buffer (); | |
4109 | } | |
4110 | \f | |
4111 | ||
4112 | /* | |
4113 | * Store repeated immediate data in current Psect | |
4114 | */ | |
4115 | static | |
4116 | VMS_Store_Repeated_Data (Repeat_Count, Pointer, Size, Record_Type) | |
4117 | int Repeat_Count; | |
4118 | register char *Pointer; | |
4119 | int Size; | |
4120 | int Record_Type; | |
4121 | { | |
4122 | ||
4123 | /* | |
4124 | * Ignore zero bytes/words/longwords | |
4125 | */ | |
4126 | if ((Size == sizeof (char)) && (*Pointer == 0)) | |
4127 | return; | |
4128 | if ((Size == sizeof (short)) && (*(short *) Pointer == 0)) | |
4129 | return; | |
4130 | if ((Size == sizeof (long)) && (*(long *) Pointer == 0)) | |
4131 | return; | |
4132 | /* | |
4133 | * If the data is too big for a TIR_S_C_STO_RIVB sub-record | |
4134 | * then we do it manually | |
4135 | */ | |
4136 | if (Size > 255) | |
4137 | { | |
4138 | while (--Repeat_Count >= 0) | |
4139 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type); | |
4140 | return; | |
4141 | } | |
4142 | /* | |
4143 | * We are writing a "Record_Type" record | |
4144 | */ | |
4145 | Set_VMS_Object_File_Record (Record_Type); | |
4146 | /* | |
4147 | * If the buffer is empty we must insert record type | |
4148 | */ | |
4149 | if (Object_Record_Offset == 0) | |
4150 | PUT_CHAR (Record_Type); | |
4151 | /* | |
4152 | * Stack the repeat count | |
4153 | */ | |
4154 | PUT_CHAR (TIR_S_C_STA_LW); | |
4155 | PUT_LONG (Repeat_Count); | |
4156 | /* | |
4157 | * And now the command and its data | |
4158 | */ | |
4159 | PUT_CHAR (TIR_S_C_STO_RIVB); | |
4160 | PUT_CHAR (Size); | |
4161 | while (--Size >= 0) | |
4162 | PUT_CHAR (*Pointer++); | |
4163 | /* | |
4164 | * Flush the buffer if it is more than 75% full | |
4165 | */ | |
4166 | if (Object_Record_Offset > | |
4167 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4168 | Flush_VMS_Object_Record_Buffer (); | |
4169 | } | |
4170 | \f | |
4171 | ||
4172 | /* | |
4173 | * Store a Position Independent Reference | |
4174 | */ | |
4175 | static | |
4176 | VMS_Store_PIC_Symbol_Reference (Symbol, Offset, PC_Relative, | |
4177 | Psect, Psect_Offset, Record_Type) | |
4178 | struct symbol *Symbol; | |
4179 | int Offset; | |
4180 | int PC_Relative; | |
4181 | int Psect; | |
4182 | int Psect_Offset; | |
4183 | int Record_Type; | |
4184 | { | |
4185 | register struct VMS_Symbol *vsp = | |
4186 | (struct VMS_Symbol *) (Symbol->sy_number); | |
4187 | char Local[32]; | |
4188 | ||
4189 | /* | |
4190 | * We are writing a "Record_Type" record | |
4191 | */ | |
4192 | Set_VMS_Object_File_Record (Record_Type); | |
4193 | /* | |
4194 | * If the buffer is empty we must insert record type | |
4195 | */ | |
4196 | if (Object_Record_Offset == 0) | |
4197 | PUT_CHAR (Record_Type); | |
4198 | /* | |
4199 | * Set to the appropriate offset in the Psect | |
4200 | */ | |
4201 | if (PC_Relative) | |
4202 | { | |
4203 | /* | |
4204 | * For a Code reference we need to fix the operand | |
4205 | * specifier as well (so back up 1 byte) | |
4206 | */ | |
4207 | VMS_Set_Psect (Psect, Psect_Offset - 1, Record_Type); | |
4208 | } | |
4209 | else | |
4210 | { | |
4211 | /* | |
4212 | * For a Data reference we just store HERE | |
4213 | */ | |
4214 | VMS_Set_Psect (Psect, Psect_Offset, Record_Type); | |
4215 | } | |
4216 | /* | |
4217 | * Make sure we are still generating a "Record Type" record | |
4218 | */ | |
4219 | if (Object_Record_Offset == 0) | |
4220 | PUT_CHAR (Record_Type); | |
4221 | /* | |
4222 | * Dispatch on symbol type (so we can stack its value) | |
4223 | */ | |
4224 | switch (S_GET_RAW_TYPE (Symbol)) | |
4225 | { | |
4226 | /* | |
4227 | * Global symbol | |
4228 | */ | |
4229 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
4230 | case N_UNDF | N_EXT: | |
4231 | case N_DATA | N_EXT: | |
4232 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4233 | case N_UNDF: | |
4234 | case N_TEXT | N_EXT: | |
4235 | /* | |
4236 | * Get the symbol name (case hacked) | |
4237 | */ | |
4238 | VMS_Case_Hack_Symbol (S_GET_NAME (Symbol), Local); | |
4239 | /* | |
4240 | * Stack the global symbol value | |
4241 | */ | |
4242 | PUT_CHAR (TIR_S_C_STA_GBL); | |
4243 | PUT_COUNTED_STRING (Local); | |
4244 | if (Offset) | |
4245 | { | |
4246 | /* | |
4247 | * Stack the longword offset | |
4248 | */ | |
4249 | PUT_CHAR (TIR_S_C_STA_LW); | |
4250 | PUT_LONG (Offset); | |
4251 | /* | |
4252 | * Add the two, leaving the result on the stack | |
4253 | */ | |
4254 | PUT_CHAR (TIR_S_C_OPR_ADD); | |
4255 | } | |
4256 | break; | |
4257 | /* | |
4258 | * Uninitialized local data | |
4259 | */ | |
4260 | case N_BSS: | |
4261 | /* | |
4262 | * Stack the Psect (+offset) | |
4263 | */ | |
4264 | if (vsp->Psect_Index < 255) | |
4265 | { | |
4266 | PUT_CHAR (TIR_S_C_STA_PL); | |
4267 | PUT_CHAR (vsp->Psect_Index); | |
4268 | } | |
4269 | else | |
4270 | { | |
4271 | PUT_CHAR (TIR_S_C_STA_WPL); | |
4272 | PUT_SHORT (vsp->Psect_Index); | |
4273 | } | |
4274 | PUT_LONG (vsp->Psect_Offset + Offset); | |
4275 | break; | |
4276 | /* | |
4277 | * Local text | |
4278 | */ | |
4279 | case N_TEXT: | |
4280 | /* | |
4281 | * Stack the Psect (+offset) | |
4282 | */ | |
4283 | if (vsp->Psect_Index < 255) | |
4284 | { | |
4285 | PUT_CHAR (TIR_S_C_STA_PL); | |
4286 | PUT_CHAR (vsp->Psect_Index); | |
4287 | } | |
4288 | else | |
4289 | { | |
4290 | PUT_CHAR (TIR_S_C_STA_WPL); | |
4291 | PUT_SHORT (vsp->Psect_Index); | |
4292 | } | |
4293 | PUT_LONG (S_GET_VALUE (Symbol) + Offset); | |
4294 | break; | |
4295 | /* | |
4296 | * Initialized local or global data | |
4297 | */ | |
4298 | case N_DATA: | |
4299 | #ifndef NOT_VAX_11_C_COMPATIBLE | |
4300 | case N_UNDF | N_EXT: | |
4301 | case N_DATA | N_EXT: | |
4302 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4303 | /* | |
4304 | * Stack the Psect (+offset) | |
4305 | */ | |
4306 | if (vsp->Psect_Index < 255) | |
4307 | { | |
4308 | PUT_CHAR (TIR_S_C_STA_PL); | |
4309 | PUT_CHAR (vsp->Psect_Index); | |
4310 | } | |
4311 | else | |
4312 | { | |
4313 | PUT_CHAR (TIR_S_C_STA_WPL); | |
4314 | PUT_SHORT (vsp->Psect_Index); | |
4315 | } | |
4316 | PUT_LONG (vsp->Psect_Offset + Offset); | |
4317 | break; | |
4318 | } | |
4319 | /* | |
4320 | * Store either a code or data reference | |
4321 | */ | |
4322 | PUT_CHAR (PC_Relative ? TIR_S_C_STO_PICR : TIR_S_C_STO_PIDR); | |
4323 | /* | |
4324 | * Flush the buffer if it is more than 75% full | |
4325 | */ | |
4326 | if (Object_Record_Offset > | |
4327 | (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4328 | Flush_VMS_Object_Record_Buffer (); | |
4329 | } | |
4330 | \f | |
4331 | ||
4332 | /* | |
4333 | * Check in the text area for an indirect pc-relative reference | |
4334 | * and fix it up with addressing mode 0xff [PC indirect] | |
4335 | * | |
4336 | * THIS SHOULD BE REPLACED BY THE USE OF TIR_S_C_STO_PIRR IN THE | |
4337 | * PIC CODE GENERATING FIXUP ROUTINE. | |
4338 | */ | |
4339 | static | |
4340 | VMS_Fix_Indirect_Reference (Text_Psect, Offset, fragP, text_frag_root) | |
4341 | int Text_Psect; | |
4342 | int Offset; | |
4343 | register fragS *fragP; | |
4344 | struct frag *text_frag_root; | |
4345 | { | |
4346 | /* | |
4347 | * The addressing mode byte is 1 byte before the address | |
4348 | */ | |
4349 | Offset--; | |
4350 | /* | |
4351 | * Is it in THIS frag?? | |
4352 | */ | |
4353 | if ((Offset < fragP->fr_address) || | |
4354 | (Offset >= (fragP->fr_address + fragP->fr_fix))) | |
4355 | { | |
4356 | /* | |
4357 | * We need to search for the fragment containing this | |
4358 | * Offset | |
4359 | */ | |
4360 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
4361 | { | |
4362 | if ((Offset >= fragP->fr_address) && | |
4363 | (Offset < (fragP->fr_address + fragP->fr_fix))) | |
4364 | break; | |
4365 | } | |
4366 | /* | |
4367 | * If we couldn't find the frag, things are BAD!! | |
4368 | */ | |
4369 | if (fragP == 0) | |
4370 | error ("Couldn't find fixup fragment when checking for indirect reference"); | |
4371 | } | |
4372 | /* | |
4373 | * Check for indirect PC relative addressing mode | |
4374 | */ | |
4375 | if (fragP->fr_literal[Offset - fragP->fr_address] == (char) 0xff) | |
4376 | { | |
4377 | static char Address_Mode = 0xff; | |
4378 | ||
4379 | /* | |
4380 | * Yes: Store the indirect mode back into the image | |
4381 | * to fix up the damage done by STO_PICR | |
4382 | */ | |
4383 | VMS_Set_Psect (Text_Psect, Offset, OBJ_S_C_TIR); | |
4384 | VMS_Store_Immediate_Data (&Address_Mode, 1, OBJ_S_C_TIR); | |
4385 | } | |
4386 | } | |
4387 | \f | |
be9618de KR |
4388 | /* |
4389 | * If the procedure "main()" exists we have to add the instruction | |
4390 | * "jsb c$main_args" at the beginning to be compatible with VAX-11 "C". | |
4391 | */ | |
4392 | VMS_Check_For_Main () | |
4393 | { | |
4394 | register symbolS *symbolP; | |
4395 | #ifdef HACK_DEC_C_STARTUP /* JF */ | |
4396 | register struct frchain *frchainP; | |
4397 | register fragS *fragP; | |
4398 | register fragS **prev_fragPP; | |
4399 | register struct fix *fixP; | |
4400 | register fragS *New_Frag; | |
4401 | int i; | |
4402 | #endif /* HACK_DEC_C_STARTUP */ | |
4403 | ||
4404 | symbolP = (struct symbol *) symbol_find ("_main"); | |
4405 | if (symbolP && !S_IS_DEBUG (symbolP) && | |
4406 | S_IS_EXTERNAL (symbolP) && (S_GET_TYPE (symbolP) == N_TEXT)) | |
4407 | { | |
4408 | #ifdef HACK_DEC_C_STARTUP | |
def66e24 | 4409 | if (!flag_hash_long_names) |
be9618de KR |
4410 | { |
4411 | #endif | |
4412 | /* | |
4413 | * Remember the entry point symbol | |
4414 | */ | |
4415 | Entry_Point_Symbol = symbolP; | |
4416 | #ifdef HACK_DEC_C_STARTUP | |
4417 | } | |
4418 | else | |
4419 | { | |
4420 | /* | |
4421 | * Scan all the fragment chains for the one with "_main" | |
4422 | * (Actually we know the fragment from the symbol, but we need | |
4423 | * the previous fragment so we can change its pointer) | |
4424 | */ | |
4425 | frchainP = frchain_root; | |
4426 | while (frchainP) | |
4427 | { | |
4428 | /* | |
4429 | * Scan all the fragments in this chain, remembering | |
4430 | * the "previous fragment" | |
4431 | */ | |
4432 | prev_fragPP = &frchainP->frch_root; | |
4433 | fragP = frchainP->frch_root; | |
4434 | while (fragP && (fragP != frchainP->frch_last)) | |
4435 | { | |
4436 | /* | |
4437 | * Is this the fragment? | |
4438 | */ | |
4439 | if (fragP == symbolP->sy_frag) | |
4440 | { | |
4441 | /* | |
4442 | * Yes: Modify the fragment by replacing | |
4443 | * it with a new fragment. | |
4444 | */ | |
4445 | New_Frag = (fragS *) | |
4446 | xmalloc (sizeof (*New_Frag) + | |
4447 | fragP->fr_fix + | |
4448 | fragP->fr_var + | |
4449 | 5); | |
4450 | /* | |
4451 | * The fragments are the same except | |
4452 | * that the "fixed" area is larger | |
4453 | */ | |
4454 | *New_Frag = *fragP; | |
4455 | New_Frag->fr_fix += 6; | |
4456 | /* | |
4457 | * Copy the literal data opening a hole | |
4458 | * 2 bytes after "_main" (i.e. just after | |
4459 | * the entry mask). Into which we place | |
4460 | * the JSB instruction. | |
4461 | */ | |
4462 | New_Frag->fr_literal[0] = fragP->fr_literal[0]; | |
4463 | New_Frag->fr_literal[1] = fragP->fr_literal[1]; | |
4464 | New_Frag->fr_literal[2] = 0x16; /* Jsb */ | |
4465 | New_Frag->fr_literal[3] = 0xef; | |
4466 | New_Frag->fr_literal[4] = 0; | |
4467 | New_Frag->fr_literal[5] = 0; | |
4468 | New_Frag->fr_literal[6] = 0; | |
4469 | New_Frag->fr_literal[7] = 0; | |
4470 | for (i = 2; i < fragP->fr_fix + fragP->fr_var; i++) | |
4471 | New_Frag->fr_literal[i + 6] = | |
4472 | fragP->fr_literal[i]; | |
4473 | /* | |
4474 | * Now replace the old fragment with the | |
4475 | * newly generated one. | |
4476 | */ | |
4477 | *prev_fragPP = New_Frag; | |
4478 | /* | |
4479 | * Remember the entry point symbol | |
4480 | */ | |
4481 | Entry_Point_Symbol = symbolP; | |
4482 | /* | |
4483 | * Scan the text area fixup structures | |
4484 | * as offsets in the fragment may have | |
4485 | * changed | |
4486 | */ | |
4487 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) | |
4488 | { | |
4489 | /* | |
4490 | * Look for references to this | |
4491 | * fragment. | |
4492 | */ | |
4493 | if (fixP->fx_frag == fragP) | |
4494 | { | |
4495 | /* | |
4496 | * Change the fragment | |
4497 | * pointer | |
4498 | */ | |
4499 | fixP->fx_frag = New_Frag; | |
4500 | /* | |
4501 | * If the offset is after | |
4502 | * the entry mask we need | |
4503 | * to account for the JSB | |
4504 | * instruction we just | |
4505 | * inserted. | |
4506 | */ | |
4507 | if (fixP->fx_where >= 2) | |
4508 | fixP->fx_where += 6; | |
4509 | } | |
4510 | } | |
4511 | /* | |
4512 | * Scan the symbols as offsets in the | |
4513 | * fragment may have changed | |
4514 | */ | |
4515 | for (symbolP = symbol_rootP; | |
4516 | symbolP; | |
4517 | symbolP = symbol_next (symbolP)) | |
4518 | { | |
4519 | /* | |
4520 | * Look for references to this | |
4521 | * fragment. | |
4522 | */ | |
4523 | if (symbolP->sy_frag == fragP) | |
4524 | { | |
4525 | /* | |
4526 | * Change the fragment | |
4527 | * pointer | |
4528 | */ | |
4529 | symbolP->sy_frag = New_Frag; | |
4530 | /* | |
4531 | * If the offset is after | |
4532 | * the entry mask we need | |
4533 | * to account for the JSB | |
4534 | * instruction we just | |
4535 | * inserted. | |
4536 | */ | |
4537 | if (S_GET_VALUE (symbolP) >= 2) | |
85051959 ILT |
4538 | S_SET_VALUE (symbolP, |
4539 | S_GET_VALUE (symbolP) + 6); | |
be9618de KR |
4540 | } |
4541 | } | |
4542 | /* | |
4543 | * Make a symbol reference to | |
4544 | * "_c$main_args" so we can get | |
4545 | * its address inserted into the | |
4546 | * JSB instruction. | |
4547 | */ | |
4548 | symbolP = (symbolS *) xmalloc (sizeof (*symbolP)); | |
a9918088 | 4549 | S_SET_NAME (symbolP, "_C$MAIN_ARGS"); |
be9618de | 4550 | S_SET_TYPE (symbolP, N_UNDF); |
a9918088 KR |
4551 | S_SET_OTHER (symbolP, 0); |
4552 | S_SET_DESC (symbolP, 0); | |
85051959 | 4553 | S_SET_VALUE (symbolP, 0); |
be9618de KR |
4554 | symbolP->sy_name_offset = 0; |
4555 | symbolP->sy_number = 0; | |
4556 | symbolP->sy_frag = New_Frag; | |
5868b1fe ILT |
4557 | symbolP->sy_resolved = 0; |
4558 | symbolP->sy_resolving = 0; | |
be9618de KR |
4559 | /* this actually inserts at the beginning of the list */ |
4560 | symbol_append (symbol_rootP, symbolP, &symbol_rootP, &symbol_lastP); | |
4561 | ||
4562 | symbol_rootP = symbolP; | |
4563 | /* | |
4564 | * Generate a text fixup structure | |
4565 | * to get "_c$main_args" stored into the | |
4566 | * JSB instruction. | |
4567 | */ | |
4568 | fixP = (struct fix *) xmalloc (sizeof (*fixP)); | |
4569 | fixP->fx_frag = New_Frag; | |
4570 | fixP->fx_where = 4; | |
4571 | fixP->fx_addsy = symbolP; | |
4572 | fixP->fx_subsy = 0; | |
4573 | fixP->fx_offset = 0; | |
4574 | fixP->fx_size = sizeof (long); | |
4575 | fixP->fx_pcrel = 1; | |
4576 | fixP->fx_next = text_fix_root; | |
4577 | text_fix_root = fixP; | |
4578 | /* | |
4579 | * Now make sure we exit from the loop | |
4580 | */ | |
4581 | frchainP = 0; | |
4582 | break; | |
4583 | } | |
4584 | /* | |
4585 | * Try the next fragment | |
4586 | */ | |
4587 | prev_fragPP = &fragP->fr_next; | |
4588 | fragP = fragP->fr_next; | |
4589 | } | |
4590 | /* | |
4591 | * Try the next fragment chain | |
4592 | */ | |
4593 | if (frchainP) | |
4594 | frchainP = frchainP->frch_next; | |
4595 | } | |
4596 | } | |
4597 | #endif /* HACK_DEC_C_STARTUP */ | |
4598 | } | |
4599 | } | |
4600 | \f | |
4601 | /* | |
4602 | * Write a VAX/VMS object file (everything else has been done!) | |
4603 | */ | |
9a75dc1f ILT |
4604 | VMS_write_object_file (text_siz, data_siz, bss_siz, text_frag_root, |
4605 | data_frag_root) | |
be9618de KR |
4606 | unsigned text_siz; |
4607 | unsigned data_siz; | |
9a75dc1f | 4608 | unsigned bss_siz; |
be9618de KR |
4609 | struct frag *text_frag_root; |
4610 | struct frag *data_frag_root; | |
4611 | { | |
4612 | register fragS *fragP; | |
4613 | register symbolS *symbolP; | |
4614 | register symbolS *sp; | |
4615 | register struct fix *fixP; | |
4616 | register struct VMS_Symbol *vsp; | |
4617 | char *Data_Segment; | |
4618 | int Local_Initialized_Data_Size = 0; | |
4619 | int Globalref; | |
4620 | int Psect_Number = 0; /* Psect Index Number */ | |
4621 | int Text_Psect = -1; /* Text Psect Index */ | |
4622 | int Data_Psect = -2; /* Data Psect Index JF: Was -1 */ | |
4623 | int Bss_Psect = -3; /* Bss Psect Index JF: Was -1 */ | |
4624 | ||
4625 | /* | |
4626 | * Create the VMS object file | |
4627 | */ | |
4628 | Create_VMS_Object_File (); | |
4629 | /* | |
4630 | * Write the module header records | |
4631 | */ | |
4632 | Write_VMS_MHD_Records (); | |
4633 | \f | |
4634 | /* | |
4635 | * Store the Data segment: | |
4636 | * | |
4637 | * Since this is REALLY hard to do any other way, | |
4638 | * we actually manufacture the data segment and | |
4639 | * the store the appropriate values out of it. | |
4640 | * We need to generate this early, so that globalvalues | |
4641 | * can be properly emitted. | |
4642 | */ | |
4643 | if (data_siz > 0) | |
4644 | { | |
4645 | /* | |
4646 | * Allocate the data segment | |
4647 | */ | |
4648 | Data_Segment = (char *) xmalloc (data_siz); | |
4649 | /* | |
4650 | * Run through the data fragments, filling in the segment | |
4651 | */ | |
4652 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
4653 | { | |
4654 | register long int count; | |
4655 | register char *fill_literal; | |
4656 | register long int fill_size; | |
4657 | int i; | |
4658 | ||
4659 | i = fragP->fr_address - text_siz; | |
4660 | if (fragP->fr_fix) | |
4661 | memcpy (Data_Segment + i, | |
4662 | fragP->fr_literal, | |
4663 | fragP->fr_fix); | |
4664 | i += fragP->fr_fix; | |
4665 | ||
4666 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
4667 | fill_size = fragP->fr_var; | |
4668 | for (count = fragP->fr_offset; count; count--) | |
4669 | { | |
4670 | if (fill_size) | |
4671 | memcpy (Data_Segment + i, fill_literal, fill_size); | |
4672 | i += fill_size; | |
4673 | } | |
4674 | } | |
4675 | } | |
4676 | ||
4677 | ||
4678 | /* | |
4679 | * Generate the VMS object file records | |
4680 | * 1st GSD then TIR records | |
4681 | */ | |
4682 | ||
4683 | /******* Global Symbol Dictionary *******/ | |
4684 | /* | |
4685 | * Emit globalvalues now. We must do this before the text psect | |
4686 | * is defined, or we will get linker warnings about multiply defined | |
4687 | * symbols. All of the globalvalues "reference" psect 0, although | |
4688 | * it really does not have anything to do with it. | |
4689 | */ | |
4690 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment); | |
4691 | /* | |
4692 | * Define the Text Psect | |
4693 | */ | |
4694 | Text_Psect = Psect_Number++; | |
4695 | VMS_Psect_Spec ("$code", text_siz, "TEXT", 0); | |
4696 | /* | |
4697 | * Define the BSS Psect | |
4698 | */ | |
9a75dc1f | 4699 | if (bss_siz > 0) |
be9618de KR |
4700 | { |
4701 | Bss_Psect = Psect_Number++; | |
9a75dc1f | 4702 | VMS_Psect_Spec ("$uninitialized_data", bss_siz, "DATA", 0); |
be9618de KR |
4703 | } |
4704 | #ifndef gxx_bug_fixed | |
4705 | /* | |
4706 | * The g++ compiler does not write out external references to vtables | |
4707 | * correctly. Check for this and holler if we see it happening. | |
4708 | * If that compiler bug is ever fixed we can remove this. | |
4709 | */ | |
4710 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
4711 | { | |
4712 | /* | |
4713 | * Dispatch on symbol type | |
4714 | */ | |
4715 | switch (S_GET_RAW_TYPE (sp)) { | |
4716 | /* | |
4717 | * Global Reference | |
4718 | */ | |
4719 | case N_UNDF: | |
4720 | /* | |
4721 | * Make a GSD global symbol reference | |
4722 | * record. | |
4723 | */ | |
4724 | if (strncmp (S_GET_NAME (sp),"__vt.",5) == 0) | |
4725 | { | |
4726 | S_GET_RAW_TYPE (sp) = N_UNDF | N_EXT; | |
a9918088 | 4727 | S_SET_OTHER (sp, 1); |
abf434d8 KR |
4728 | /* Is this warning still needed? It sounds like it describes |
4729 | a compiler bug. Does it? If not, let's dump it. */ | |
be9618de KR |
4730 | as_warn("g++ wrote an extern reference to %s as a routine.", |
4731 | S_GET_NAME (sp)); | |
4732 | as_warn("I will fix it, but I hope that it was not really a routine"); | |
c06e55d9 | 4733 | } |
be9618de KR |
4734 | break; |
4735 | default: | |
4736 | break; | |
4737 | } | |
4738 | } | |
4739 | #endif /* gxx_bug_fixed */ | |
4740 | /* | |
4741 | * Now scan the symbols and emit the appropriate GSD records | |
4742 | */ | |
4743 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
4744 | { | |
4745 | /* | |
4746 | * Dispatch on symbol type | |
4747 | */ | |
4748 | switch (S_GET_RAW_TYPE (sp)) | |
4749 | { | |
4750 | /* | |
4751 | * Global uninitialized data | |
4752 | */ | |
4753 | case N_UNDF | N_EXT: | |
4754 | /* | |
4755 | * Make a VMS data symbol entry | |
4756 | */ | |
4757 | vsp = (struct VMS_Symbol *) | |
4758 | xmalloc (sizeof (*vsp)); | |
4759 | vsp->Symbol = sp; | |
4760 | vsp->Size = S_GET_VALUE (sp); | |
4761 | vsp->Psect_Index = Psect_Number++; | |
4762 | vsp->Psect_Offset = 0; | |
4763 | vsp->Next = VMS_Symbols; | |
4764 | VMS_Symbols = vsp; | |
4765 | sp->sy_number = (int) vsp; | |
4766 | /* | |
4767 | * Make the psect for this data | |
4768 | */ | |
a9918088 KR |
4769 | Globalref = VMS_Psect_Spec ( |
4770 | S_GET_NAME (sp), | |
4771 | vsp->Size, | |
4772 | S_GET_OTHER (sp) ? "CONST" : "COMMON", | |
4773 | vsp); | |
be9618de KR |
4774 | if (Globalref) |
4775 | Psect_Number--; | |
494a6c05 KR |
4776 | |
4777 | /* See if this is an external vtable. We want to help the linker find | |
4778 | these things in libraries, so we make a symbol reference. This | |
4779 | is not compatible with VAX-C usage for variables, but since vtables are | |
4780 | only used internally by g++, we can get away with this hack. */ | |
4781 | ||
4782 | if(strncmp (S_GET_NAME (sp), "__vt.", 5) == 0) | |
4783 | VMS_Global_Symbol_Spec (S_GET_NAME(sp), | |
4784 | vsp->Psect_Index, | |
4785 | 0, | |
4786 | 0); | |
4787 | ||
be9618de KR |
4788 | #ifdef NOT_VAX_11_C_COMPATIBLE |
4789 | /* | |
4790 | * Place a global symbol at the | |
4791 | * beginning of the Psect | |
4792 | */ | |
4793 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
4794 | vsp->Psect_Index, | |
4795 | 0, | |
4796 | 1); | |
4797 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4798 | break; | |
4799 | /* | |
4800 | * Local uninitialized data | |
4801 | */ | |
4802 | case N_BSS: | |
4803 | /* | |
4804 | * Make a VMS data symbol entry | |
4805 | */ | |
4806 | vsp = (struct VMS_Symbol *) | |
4807 | xmalloc (sizeof (*vsp)); | |
4808 | vsp->Symbol = sp; | |
4809 | vsp->Size = 0; | |
4810 | vsp->Psect_Index = Bss_Psect; | |
4811 | vsp->Psect_Offset = | |
4812 | S_GET_VALUE (sp) - | |
4813 | bss_address_frag.fr_address; | |
4814 | vsp->Next = VMS_Symbols; | |
4815 | VMS_Symbols = vsp; | |
4816 | sp->sy_number = (int) vsp; | |
4817 | break; | |
4818 | /* | |
4819 | * Global initialized data | |
4820 | */ | |
4821 | case N_DATA | N_EXT: | |
4822 | /* | |
4823 | * Make a VMS data symbol entry | |
4824 | */ | |
4825 | vsp = (struct VMS_Symbol *) | |
4826 | xmalloc (sizeof (*vsp)); | |
4827 | vsp->Symbol = sp; | |
4828 | vsp->Size = VMS_Initialized_Data_Size (sp, | |
4829 | text_siz + data_siz); | |
4830 | vsp->Psect_Index = Psect_Number++; | |
4831 | vsp->Psect_Offset = 0; | |
4832 | vsp->Next = VMS_Symbols; | |
4833 | VMS_Symbols = vsp; | |
4834 | sp->sy_number = (int) vsp; | |
4835 | /* | |
4836 | * Make its psect | |
4837 | */ | |
a9918088 KR |
4838 | Globalref = VMS_Psect_Spec ( |
4839 | S_GET_NAME (sp), | |
4840 | vsp->Size, | |
4841 | S_GET_OTHER (sp) ? "CONST" : "COMMON", | |
4842 | vsp); | |
be9618de KR |
4843 | if (Globalref) |
4844 | Psect_Number--; | |
494a6c05 KR |
4845 | |
4846 | /* See if this is an external vtable. We want to help the linker find | |
4847 | these things in libraries, so we make a symbol definition. This | |
4848 | is not compatible with VAX-C usage for variables, but since vtables are | |
4849 | only used internally by g++, we can get away with this hack. */ | |
4850 | ||
4851 | if(strncmp (S_GET_NAME (sp), "__vt.", 5) == 0) | |
4852 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
4853 | vsp->Psect_Index, | |
4854 | 0, | |
4855 | 1); | |
4856 | ||
be9618de KR |
4857 | #ifdef NOT_VAX_11_C_COMPATIBLE |
4858 | /* | |
4859 | * Place a global symbol at the | |
4860 | * beginning of the Psect | |
4861 | */ | |
4862 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
4863 | vsp->Psect_Index, | |
4864 | 0, | |
4865 | 1); | |
4866 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4867 | break; | |
4868 | /* | |
4869 | * Local initialized data | |
4870 | */ | |
4871 | case N_DATA: | |
4872 | /* | |
4873 | * Make a VMS data symbol entry | |
4874 | */ | |
4875 | vsp = (struct VMS_Symbol *) | |
4876 | xmalloc (sizeof (*vsp)); | |
4877 | vsp->Symbol = sp; | |
4878 | vsp->Size = | |
4879 | VMS_Initialized_Data_Size (sp, | |
4880 | text_siz + data_siz); | |
4881 | vsp->Psect_Index = Data_Psect; | |
4882 | vsp->Psect_Offset = | |
4883 | Local_Initialized_Data_Size; | |
4884 | Local_Initialized_Data_Size += vsp->Size; | |
4885 | vsp->Next = VMS_Symbols; | |
4886 | VMS_Symbols = vsp; | |
4887 | sp->sy_number = (int) vsp; | |
4888 | break; | |
4889 | /* | |
4890 | * Global Text definition | |
4891 | */ | |
4892 | case N_TEXT | N_EXT: | |
4893 | { | |
4894 | unsigned short Entry_Mask; | |
4895 | ||
4896 | /* | |
4897 | * Get the entry mask | |
4898 | */ | |
4899 | fragP = sp->sy_frag; | |
abf434d8 KR |
4900 | |
4901 | /* If first frag doesn't contain the data, what do we do? | |
4902 | If it's possibly smaller than two bytes, that would | |
4903 | imply that the entry mask is not stored where we're | |
4904 | expecting it. | |
4905 | ||
4906 | If you can find a test case that triggers this, report | |
4907 | it (and tell me what the entry mask field ought to be), | |
4908 | and I'll try to fix it. KR */ | |
ad8019e8 KR |
4909 | /* First frag might be empty if we're generating listings. |
4910 | So skip empty rs_fill frags. */ | |
4911 | while (fragP && fragP->fr_type == rs_fill && fragP->fr_fix == 0) | |
4912 | fragP = fragP->fr_next; | |
4913 | ||
abf434d8 KR |
4914 | if (fragP->fr_fix < 2) |
4915 | abort (); | |
4916 | ||
be9618de KR |
4917 | Entry_Mask = (fragP->fr_literal[0] & 0xff) + |
4918 | ((fragP->fr_literal[1] & 0xff) | |
4919 | << 8); | |
4920 | /* | |
4921 | * Define the Procedure entry pt. | |
4922 | */ | |
4923 | VMS_Procedure_Entry_Pt (S_GET_NAME (sp), | |
4924 | Text_Psect, | |
4925 | S_GET_VALUE (sp), | |
4926 | Entry_Mask); | |
4927 | break; | |
4928 | } | |
4929 | /* | |
4930 | * Local Text definition | |
4931 | */ | |
4932 | case N_TEXT: | |
4933 | /* | |
4934 | * Make a VMS data symbol entry | |
4935 | */ | |
4936 | if (Text_Psect != -1) | |
4937 | { | |
4938 | vsp = (struct VMS_Symbol *) | |
4939 | xmalloc (sizeof (*vsp)); | |
4940 | vsp->Symbol = sp; | |
4941 | vsp->Size = 0; | |
4942 | vsp->Psect_Index = Text_Psect; | |
4943 | vsp->Psect_Offset = S_GET_VALUE (sp); | |
4944 | vsp->Next = VMS_Symbols; | |
4945 | VMS_Symbols = vsp; | |
4946 | sp->sy_number = (int) vsp; | |
4947 | } | |
4948 | break; | |
4949 | /* | |
4950 | * Global Reference | |
4951 | */ | |
4952 | case N_UNDF: | |
4953 | /* | |
4954 | * Make a GSD global symbol reference | |
4955 | * record. | |
4956 | */ | |
4957 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
4958 | 0, | |
4959 | 0, | |
4960 | 0); | |
4961 | break; | |
4962 | /* | |
4963 | * Anything else | |
4964 | */ | |
4965 | default: | |
4966 | /* | |
4967 | * Ignore STAB symbols | |
4968 | * Including .stabs emitted by g++ | |
4969 | */ | |
4970 | if (S_IS_DEBUG (sp) || (S_GET_TYPE (sp) == 22)) | |
4971 | break; | |
4972 | /* | |
4973 | * Error | |
4974 | */ | |
4975 | if (S_GET_TYPE (sp) != 22) | |
4976 | printf (" ERROR, unknown type (%d)\n", | |
4977 | S_GET_TYPE (sp)); | |
4978 | break; | |
4979 | } | |
4980 | } | |
4981 | /* | |
4982 | * Define the Data Psect | |
4983 | */ | |
4984 | if ((data_siz > 0) && (Local_Initialized_Data_Size > 0)) | |
4985 | { | |
4986 | /* | |
4987 | * Do it | |
4988 | */ | |
4989 | Data_Psect = Psect_Number++; | |
4990 | VMS_Psect_Spec ("$data", | |
4991 | Local_Initialized_Data_Size, | |
4992 | "DATA", 0); | |
4993 | /* | |
4994 | * Scan the VMS symbols and fill in the data psect | |
4995 | */ | |
4996 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
4997 | { | |
4998 | /* | |
4999 | * Only look for undefined psects | |
5000 | */ | |
5001 | if (vsp->Psect_Index < 0) | |
5002 | { | |
5003 | /* | |
5004 | * And only initialized data | |
5005 | */ | |
5006 | if ((S_GET_TYPE (vsp->Symbol) == N_DATA) && !S_IS_EXTERNAL (vsp->Symbol)) | |
5007 | vsp->Psect_Index = Data_Psect; | |
5008 | } | |
5009 | } | |
5010 | } | |
5011 | \f | |
5012 | /******* Text Information and Relocation Records *******/ | |
5013 | /* | |
5014 | * Write the text segment data | |
5015 | */ | |
5016 | if (text_siz > 0) | |
5017 | { | |
5018 | /* | |
5019 | * Scan the text fragments | |
5020 | */ | |
5021 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
5022 | { | |
5023 | /* | |
5024 | * Stop if we get to the data fragments | |
5025 | */ | |
5026 | if (fragP == data_frag_root) | |
5027 | break; | |
5028 | /* | |
5029 | * Ignore fragments with no data | |
5030 | */ | |
5031 | if ((fragP->fr_fix == 0) && (fragP->fr_var == 0)) | |
5032 | continue; | |
5033 | /* | |
5034 | * Go the the appropriate offset in the | |
5035 | * Text Psect. | |
5036 | */ | |
5037 | VMS_Set_Psect (Text_Psect, fragP->fr_address, OBJ_S_C_TIR); | |
5038 | /* | |
5039 | * Store the "fixed" part | |
5040 | */ | |
5041 | if (fragP->fr_fix) | |
5042 | VMS_Store_Immediate_Data (fragP->fr_literal, | |
5043 | fragP->fr_fix, | |
5044 | OBJ_S_C_TIR); | |
5045 | /* | |
5046 | * Store the "variable" part | |
5047 | */ | |
5048 | if (fragP->fr_var && fragP->fr_offset) | |
5049 | VMS_Store_Repeated_Data (fragP->fr_offset, | |
5050 | fragP->fr_literal + | |
5051 | fragP->fr_fix, | |
5052 | fragP->fr_var, | |
5053 | OBJ_S_C_TIR); | |
5054 | } | |
5055 | /* | |
5056 | * Now we go through the text segment fixups and | |
5057 | * generate TIR records to fix up addresses within | |
5058 | * the Text Psect | |
5059 | */ | |
5060 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) | |
5061 | { | |
5062 | /* | |
5063 | * We DO handle the case of "Symbol - Symbol" as | |
5064 | * long as it is in the same segment. | |
5065 | */ | |
5066 | if (fixP->fx_subsy && fixP->fx_addsy) | |
5067 | { | |
5068 | int i; | |
5069 | ||
5070 | /* | |
5071 | * They need to be in the same segment | |
5072 | */ | |
5073 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
5074 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
5075 | error ("Fixup data addsy and subsy didn't have the same type"); | |
5076 | /* | |
5077 | * And they need to be in one that we | |
5078 | * can check the psect on | |
5079 | */ | |
5080 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
5081 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
5082 | error ("Fixup data addsy and subsy didn't have an appropriate type"); | |
5083 | /* | |
5084 | * This had better not be PC relative! | |
5085 | */ | |
5086 | if (fixP->fx_pcrel) | |
5087 | error ("Fixup data was erroneously \"pcrel\""); | |
5088 | /* | |
5089 | * Subtract their values to get the | |
5090 | * difference. | |
5091 | */ | |
5092 | i = S_GET_VALUE (fixP->fx_addsy) - | |
5093 | S_GET_VALUE (fixP->fx_subsy); | |
5094 | /* | |
5095 | * Now generate the fixup object records | |
5096 | * Set the psect and store the data | |
5097 | */ | |
5098 | VMS_Set_Psect (Text_Psect, | |
5099 | fixP->fx_where + | |
5100 | fixP->fx_frag->fr_address, | |
5101 | OBJ_S_C_TIR); | |
5102 | VMS_Store_Immediate_Data (&i, | |
5103 | fixP->fx_size, | |
5104 | OBJ_S_C_TIR); | |
5105 | /* | |
5106 | * Done | |
5107 | */ | |
5108 | continue; | |
5109 | } | |
5110 | /* | |
5111 | * Size will HAVE to be "long" | |
5112 | */ | |
5113 | if (fixP->fx_size != sizeof (long)) | |
5114 | error ("Fixup datum was not a longword"); | |
5115 | /* | |
5116 | * Symbol must be "added" (if it is ever | |
5117 | * subtracted we can | |
5118 | * fix this assumption) | |
5119 | */ | |
5120 | if (fixP->fx_addsy == 0) | |
5121 | error ("Fixup datum was not \"fixP->fx_addsy\""); | |
5122 | /* | |
5123 | * Store the symbol value in a PIC fashion | |
5124 | */ | |
5125 | VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, | |
5126 | fixP->fx_offset, | |
5127 | fixP->fx_pcrel, | |
5128 | Text_Psect, | |
5129 | fixP->fx_where + | |
5130 | fixP->fx_frag->fr_address, | |
5131 | OBJ_S_C_TIR); | |
5132 | /* | |
5133 | * Check for indirect address reference, | |
5134 | * which has to be fixed up (as the linker | |
5135 | * will screw it up with TIR_S_C_STO_PICR). | |
5136 | */ | |
5137 | if (fixP->fx_pcrel) | |
5138 | VMS_Fix_Indirect_Reference (Text_Psect, | |
5139 | fixP->fx_where + | |
5140 | fixP->fx_frag->fr_address, | |
5141 | fixP->fx_frag, | |
5142 | text_frag_root); | |
5143 | } | |
5144 | } | |
5145 | /* | |
5146 | * Store the Data segment: | |
5147 | * | |
5148 | * Since this is REALLY hard to do any other way, | |
5149 | * we actually manufacture the data segment and | |
5150 | * the store the appropriate values out of it. | |
5151 | * The segment was manufactured before, now we just | |
5152 | * dump it into the appropriate psects. | |
5153 | */ | |
5154 | if (data_siz > 0) | |
5155 | { | |
5156 | ||
5157 | /* | |
5158 | * Now we can run through all the data symbols | |
5159 | * and store the data | |
5160 | */ | |
5161 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
5162 | { | |
5163 | /* | |
5164 | * Ignore anything other than data symbols | |
5165 | */ | |
5166 | if (S_GET_TYPE (vsp->Symbol) != N_DATA) | |
5167 | continue; | |
5168 | /* | |
5169 | * Set the Psect + Offset | |
5170 | */ | |
5171 | VMS_Set_Psect (vsp->Psect_Index, | |
5172 | vsp->Psect_Offset, | |
5173 | OBJ_S_C_TIR); | |
5174 | /* | |
5175 | * Store the data | |
5176 | */ | |
5177 | VMS_Store_Immediate_Data (Data_Segment + | |
5178 | S_GET_VALUE (vsp->Symbol) - | |
5179 | text_siz, | |
5180 | vsp->Size, | |
5181 | OBJ_S_C_TIR); | |
5182 | } | |
5183 | /* | |
5184 | * Now we go through the data segment fixups and | |
5185 | * generate TIR records to fix up addresses within | |
5186 | * the Data Psects | |
5187 | */ | |
5188 | for (fixP = data_fix_root; fixP; fixP = fixP->fx_next) | |
5189 | { | |
5190 | /* | |
5191 | * Find the symbol for the containing datum | |
5192 | */ | |
5193 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
5194 | { | |
5195 | /* | |
5196 | * Only bother with Data symbols | |
5197 | */ | |
5198 | sp = vsp->Symbol; | |
5199 | if (S_GET_TYPE (sp) != N_DATA) | |
5200 | continue; | |
5201 | /* | |
5202 | * Ignore symbol if After fixup | |
5203 | */ | |
5204 | if (S_GET_VALUE (sp) > | |
5205 | (fixP->fx_where + | |
5206 | fixP->fx_frag->fr_address)) | |
5207 | continue; | |
5208 | /* | |
5209 | * See if the datum is here | |
5210 | */ | |
5211 | if ((S_GET_VALUE (sp) + vsp->Size) <= | |
5212 | (fixP->fx_where + | |
5213 | fixP->fx_frag->fr_address)) | |
5214 | continue; | |
5215 | /* | |
5216 | * We DO handle the case of "Symbol - Symbol" as | |
5217 | * long as it is in the same segment. | |
5218 | */ | |
5219 | if (fixP->fx_subsy && fixP->fx_addsy) | |
5220 | { | |
5221 | int i; | |
5222 | ||
5223 | /* | |
5224 | * They need to be in the same segment | |
5225 | */ | |
5226 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
5227 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
5228 | error ("Fixup data addsy and subsy didn't have the same type"); | |
5229 | /* | |
5230 | * And they need to be in one that we | |
5231 | * can check the psect on | |
5232 | */ | |
5233 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
5234 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
5235 | error ("Fixup data addsy and subsy didn't have an appropriate type"); | |
5236 | /* | |
5237 | * This had better not be PC relative! | |
5238 | */ | |
5239 | if (fixP->fx_pcrel) | |
5240 | error ("Fixup data was erroneously \"pcrel\""); | |
5241 | /* | |
5242 | * Subtract their values to get the | |
5243 | * difference. | |
5244 | */ | |
5245 | i = S_GET_VALUE (fixP->fx_addsy) - | |
5246 | S_GET_VALUE (fixP->fx_subsy); | |
5247 | /* | |
5248 | * Now generate the fixup object records | |
5249 | * Set the psect and store the data | |
5250 | */ | |
5251 | VMS_Set_Psect (vsp->Psect_Index, | |
5252 | fixP->fx_frag->fr_address + | |
5253 | fixP->fx_where - | |
5254 | S_GET_VALUE (vsp->Symbol) + | |
5255 | vsp->Psect_Offset, | |
5256 | OBJ_S_C_TIR); | |
5257 | VMS_Store_Immediate_Data (&i, | |
5258 | fixP->fx_size, | |
5259 | OBJ_S_C_TIR); | |
5260 | /* | |
5261 | * Done | |
5262 | */ | |
5263 | break; | |
5264 | } | |
5265 | /* | |
5266 | * Size will HAVE to be "long" | |
5267 | */ | |
5268 | if (fixP->fx_size != sizeof (long)) | |
5269 | error ("Fixup datum was not a longword"); | |
5270 | /* | |
5271 | * Symbol must be "added" (if it is ever | |
5272 | * subtracted we can | |
5273 | * fix this assumption) | |
5274 | */ | |
5275 | if (fixP->fx_addsy == 0) | |
5276 | error ("Fixup datum was not \"fixP->fx_addsy\""); | |
5277 | /* | |
5278 | * Store the symbol value in a PIC fashion | |
5279 | */ | |
5280 | VMS_Store_PIC_Symbol_Reference ( | |
5281 | fixP->fx_addsy, | |
5282 | fixP->fx_offset, | |
5283 | fixP->fx_pcrel, | |
5284 | vsp->Psect_Index, | |
5285 | fixP->fx_frag->fr_address + | |
5286 | fixP->fx_where - | |
5287 | S_GET_VALUE (vsp->Symbol) + | |
5288 | vsp->Psect_Offset, | |
5289 | OBJ_S_C_TIR); | |
5290 | /* | |
5291 | * Done | |
5292 | */ | |
5293 | break; | |
5294 | } | |
5295 | ||
5296 | } | |
5297 | } | |
5298 | \f | |
5299 | /* | |
5300 | * Write the Traceback Begin Module record | |
5301 | */ | |
5302 | VMS_TBT_Module_Begin (); | |
5303 | /* | |
5304 | * Scan the symbols and write out the routines | |
5305 | * (this makes the assumption that symbols are in | |
5306 | * order of ascending text segment offset) | |
5307 | */ | |
5308 | { | |
5309 | struct symbol *Current_Routine = 0; | |
5310 | int Current_Line_Number = 0; | |
5311 | int Current_Offset = -1; | |
5312 | struct input_file *Current_File; | |
5313 | ||
5314 | /* Output debugging info for global variables and static variables that are not | |
5315 | * specific to one routine. We also need to examine all stabs directives, to | |
5316 | * find the definitions to all of the advanced data types, and this is done by | |
5317 | * VMS_LSYM_Parse. This needs to be done before any definitions are output to | |
5318 | * the object file, since there can be forward references in the stabs | |
5319 | * directives. When through with parsing, the text of the stabs directive | |
5320 | * is altered, with the definitions removed, so that later passes will see | |
5321 | * directives as they would be written if the type were already defined. | |
5322 | * | |
5323 | * We also look for files and include files, and make a list of them. We | |
5324 | * examine the source file numbers to establish the actual lines that code was | |
5325 | * generated from, and then generate offsets. | |
5326 | */ | |
5327 | VMS_LSYM_Parse (); | |
5328 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
5329 | { | |
5330 | /* | |
5331 | * Deal with STAB symbols | |
5332 | */ | |
5333 | if (S_IS_DEBUG (symbolP)) | |
5334 | { | |
5335 | /* | |
5336 | * Dispatch on STAB type | |
5337 | */ | |
5338 | switch ((unsigned char) S_GET_RAW_TYPE (symbolP)) | |
5339 | { | |
5340 | case N_SLINE: | |
5341 | if (S_GET_DESC (symbolP) > Current_File->max_line) | |
5342 | Current_File->max_line = S_GET_DESC (symbolP); | |
5343 | if (S_GET_DESC (symbolP) < Current_File->min_line) | |
5344 | Current_File->min_line = S_GET_DESC (symbolP); | |
5345 | break; | |
5346 | case N_SO: | |
5347 | Current_File = find_file (symbolP); | |
5348 | Current_File->flag = 1; | |
5349 | Current_File->min_line = 1; | |
5350 | break; | |
5351 | case N_SOL: | |
5352 | Current_File = find_file (symbolP); | |
5353 | break; | |
5354 | case N_GSYM: | |
5355 | VMS_GSYM_Parse (symbolP, Text_Psect); | |
5356 | break; | |
5357 | case N_LCSYM: | |
5358 | VMS_LCSYM_Parse (symbolP, Text_Psect); | |
5359 | break; | |
5360 | case N_FUN: /* For static constant symbols */ | |
5361 | case N_STSYM: | |
5362 | VMS_STSYM_Parse (symbolP, Text_Psect); | |
5363 | break; | |
5364 | } | |
5365 | } | |
5366 | } | |
5367 | ||
5368 | /* now we take a quick sweep through the files and assign offsets | |
5369 | to each one. This will essentially be the starting line number to the | |
5370 | debugger for each file. Output the info for the debugger to specify the | |
5371 | files, and then tell it how many lines to use */ | |
5372 | { | |
5373 | int File_Number = 0; | |
5374 | int Debugger_Offset = 0; | |
5375 | int file_available; | |
5376 | Current_File = file_root; | |
5377 | for (Current_File = file_root; Current_File; Current_File = Current_File->next) | |
5378 | { | |
5379 | if (Current_File == (struct input_file *) NULL) | |
5380 | break; | |
5381 | if (Current_File->max_line == 0) | |
5382 | continue; | |
5383 | if ((strncmp (Current_File->name, "GNU_GXX_INCLUDE:", 16) == 0) && | |
def66e24 | 5384 | !flag_debug) |
be9618de KR |
5385 | continue; |
5386 | if ((strncmp (Current_File->name, "GNU_CC_INCLUDE:", 15) == 0) && | |
def66e24 | 5387 | !flag_debug) |
be9618de KR |
5388 | continue; |
5389 | /* show a few extra lines at the start of the region selected */ | |
5390 | if (Current_File->min_line > 2) | |
5391 | Current_File->min_line -= 2; | |
5392 | Current_File->offset = Debugger_Offset - Current_File->min_line + 1; | |
5393 | Debugger_Offset += Current_File->max_line - Current_File->min_line + 1; | |
5394 | if (Current_File->same_file_fpnt != (struct input_file *) NULL) | |
5395 | Current_File->file_number = Current_File->same_file_fpnt->file_number; | |
5396 | else | |
5397 | { | |
5398 | Current_File->file_number = ++File_Number; | |
5399 | file_available = VMS_TBT_Source_File (Current_File->name, | |
5400 | Current_File->file_number); | |
5401 | if (!file_available) | |
5402 | { | |
5403 | Current_File->file_number = 0; | |
5404 | File_Number--; | |
5405 | continue; | |
c06e55d9 KR |
5406 | } |
5407 | } | |
be9618de KR |
5408 | VMS_TBT_Source_Lines (Current_File->file_number, |
5409 | Current_File->min_line, | |
5410 | Current_File->max_line - Current_File->min_line + 1); | |
c06e55d9 KR |
5411 | } /* for */ |
5412 | } /* scope */ | |
be9618de KR |
5413 | Current_File = (struct input_file *) NULL; |
5414 | ||
5415 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
5416 | { | |
5417 | /* | |
5418 | * Deal with text symbols | |
5419 | */ | |
5420 | if (!S_IS_DEBUG (symbolP) && (S_GET_TYPE (symbolP) == N_TEXT)) | |
5421 | { | |
5422 | /* | |
5423 | * Ignore symbols starting with "L", | |
5424 | * as they are local symbols | |
5425 | */ | |
5426 | if (*S_GET_NAME (symbolP) == 'L') | |
5427 | continue; | |
5428 | /* | |
5429 | * If there is a routine start defined, | |
5430 | * terminate it. | |
5431 | */ | |
5432 | if (Current_Routine) | |
5433 | { | |
5434 | /* | |
5435 | * End the routine | |
5436 | */ | |
5437 | VMS_TBT_Routine_End (text_siz, Current_Routine); | |
5438 | } | |
a9918088 KR |
5439 | /* |
5440 | * Check for & skip dummy labels like "gcc_compiled.". | |
5441 | * They're identified by the IN_DEFAULT_SECTION flag. | |
5442 | */ | |
5443 | if ((S_GET_OTHER (symbolP) & IN_DEFAULT_SECTION) != 0 && | |
5444 | (S_GET_VALUE (symbolP) == 0)) | |
5445 | continue; | |
be9618de KR |
5446 | /* |
5447 | * Store the routine begin traceback info | |
5448 | */ | |
5449 | if (Text_Psect != -1) | |
5450 | { | |
5451 | VMS_TBT_Routine_Begin (symbolP, Text_Psect); | |
5452 | Current_Routine = symbolP; | |
5453 | } | |
5454 | /* Output local symbols, i.e. all symbols that are associated with a specific | |
5455 | * routine. We output them now so the debugger recognizes them as local to | |
5456 | * this routine. | |
5457 | */ | |
5458 | { | |
5459 | symbolS *symbolP1; | |
5460 | char *pnt; | |
5461 | char *pnt1; | |
5462 | for (symbolP1 = Current_Routine; symbolP1; symbolP1 = symbol_next (symbolP1)) | |
5463 | { | |
5464 | if (!S_IS_DEBUG (symbolP1)) | |
5465 | continue; | |
5466 | if (S_GET_RAW_TYPE (symbolP1) != N_FUN) | |
5467 | continue; | |
5468 | pnt = S_GET_NAME (symbolP); | |
5469 | pnt1 = S_GET_NAME (symbolP1); | |
5470 | if (*pnt++ != '_') | |
5471 | continue; | |
5472 | while (*pnt++ == *pnt1++) | |
5473 | { | |
c06e55d9 | 5474 | } |
be9618de KR |
5475 | if (*pnt1 != 'F' && *pnt1 != 'f') continue; |
5476 | if ((*(--pnt) == '\0') && (*(--pnt1) == ':')) | |
5477 | break; | |
c06e55d9 | 5478 | } |
be9618de KR |
5479 | if (symbolP1 != (symbolS *) NULL) |
5480 | VMS_DBG_Define_Routine (symbolP1, Current_Routine, Text_Psect); | |
5481 | } /* local symbol block */ | |
5482 | /* | |
5483 | * Done | |
5484 | */ | |
5485 | continue; | |
5486 | } | |
5487 | /* | |
5488 | * Deal with STAB symbols | |
5489 | */ | |
5490 | if (S_IS_DEBUG (symbolP)) | |
5491 | { | |
5492 | /* | |
5493 | * Dispatch on STAB type | |
5494 | */ | |
5495 | switch ((unsigned char) S_GET_RAW_TYPE (symbolP)) | |
5496 | { | |
5497 | /* | |
5498 | * Line number | |
5499 | */ | |
5500 | case N_SLINE: | |
5501 | /* Offset the line into the correct portion | |
5502 | * of the file */ | |
5503 | if (Current_File->file_number == 0) | |
5504 | break; | |
5505 | /* Sometimes the same offset gets several source | |
5506 | * lines assigned to it. | |
5507 | * We should be selective about which lines | |
5508 | * we allow, we should prefer lines that are | |
5509 | * in the main source file when debugging | |
5510 | * inline functions. */ | |
5511 | if ((Current_File->file_number != 1) && | |
5512 | S_GET_VALUE (symbolP) == | |
5513 | Current_Offset) | |
5514 | break; | |
5515 | /* calculate actual debugger source line */ | |
5516 | S_GET_DESC (symbolP) | |
5517 | += Current_File->offset; | |
5518 | /* | |
5519 | * If this is the 1st N_SLINE, setup | |
5520 | * PC/Line correlation. Otherwise | |
5521 | * do the delta PC/Line. If the offset | |
5522 | * for the line number is not +ve we need | |
5523 | * to do another PC/Line correlation | |
5524 | * setup | |
5525 | */ | |
5526 | if (Current_Offset == -1) | |
5527 | { | |
5528 | VMS_TBT_Line_PC_Correlation ( | |
5529 | S_GET_DESC (symbolP), | |
5530 | S_GET_VALUE (symbolP), | |
5531 | Text_Psect, | |
5532 | 0); | |
5533 | } | |
5534 | else | |
5535 | { | |
5536 | if ((S_GET_DESC (symbolP) - | |
5537 | Current_Line_Number) <= 0) | |
5538 | { | |
5539 | /* | |
5540 | * Line delta is not +ve, we | |
5541 | * need to close the line and | |
5542 | * start a new PC/Line | |
5543 | * correlation. | |
5544 | */ | |
5545 | VMS_TBT_Line_PC_Correlation (0, | |
5546 | S_GET_VALUE (symbolP) - | |
5547 | Current_Offset, | |
5548 | 0, | |
5549 | -1); | |
5550 | VMS_TBT_Line_PC_Correlation ( | |
5551 | S_GET_DESC (symbolP), | |
5552 | S_GET_VALUE (symbolP), | |
5553 | Text_Psect, | |
5554 | 0); | |
5555 | } | |
5556 | else | |
5557 | { | |
5558 | /* | |
5559 | * Line delta is +ve, all is well | |
5560 | */ | |
5561 | VMS_TBT_Line_PC_Correlation ( | |
5562 | S_GET_DESC (symbolP) - | |
5563 | Current_Line_Number, | |
5564 | S_GET_VALUE (symbolP) - | |
5565 | Current_Offset, | |
5566 | 0, | |
5567 | 1); | |
5568 | } | |
5569 | } | |
5570 | /* | |
5571 | * Update the current line/PC | |
5572 | */ | |
5573 | Current_Line_Number = S_GET_DESC (symbolP); | |
5574 | Current_Offset = S_GET_VALUE (symbolP); | |
5575 | /* | |
5576 | * Done | |
5577 | */ | |
5578 | break; | |
5579 | /* | |
5580 | * Source file | |
5581 | */ | |
5582 | case N_SO: | |
5583 | /* | |
5584 | * Remember that we had a source file | |
5585 | * and emit the source file debugger | |
5586 | * record | |
5587 | */ | |
5588 | Current_File = | |
5589 | find_file (symbolP); | |
5590 | break; | |
5591 | /* We need to make sure that we are really in the actual source file when | |
5592 | * we compute the maximum line number. Otherwise the debugger gets really | |
5593 | * confused */ | |
5594 | case N_SOL: | |
5595 | Current_File = | |
5596 | find_file (symbolP); | |
5597 | break; | |
5598 | } | |
5599 | } | |
5600 | } | |
5601 | /* | |
5602 | * If there is a routine start defined, | |
5603 | * terminate it (and the line numbers) | |
5604 | */ | |
5605 | if (Current_Routine) | |
5606 | { | |
5607 | /* | |
5608 | * Terminate the line numbers | |
5609 | */ | |
5610 | VMS_TBT_Line_PC_Correlation (0, | |
5611 | text_siz - S_GET_VALUE (Current_Routine), | |
5612 | 0, | |
5613 | -1); | |
5614 | /* | |
5615 | * Terminate the routine | |
5616 | */ | |
5617 | VMS_TBT_Routine_End (text_siz, Current_Routine); | |
5618 | } | |
5619 | } | |
5620 | /* | |
5621 | * Write the Traceback End Module TBT record | |
5622 | */ | |
5623 | VMS_TBT_Module_End (); | |
5624 | \f | |
5625 | /* | |
5626 | * Write the End Of Module record | |
5627 | */ | |
5628 | if (Entry_Point_Symbol == 0) | |
5629 | Write_VMS_EOM_Record (-1, 0); | |
5630 | else | |
5631 | Write_VMS_EOM_Record (Text_Psect, | |
5632 | S_GET_VALUE (Entry_Point_Symbol)); | |
5633 | \f | |
5634 | /* | |
5635 | * All done, close the object file | |
5636 | */ | |
5637 | Close_VMS_Object_File (); | |
5638 | } | |
5639 | ||
5640 | /* end of obj-vms.c */ |